CN-121994983-A - Transformer and reactor oil chromatograph on-line monitoring device

CN121994983ACN 121994983 ACN121994983 ACN 121994983ACN-121994983-A

Abstract

The invention relates to the technical field of transformer and reactor monitoring, and discloses an online monitoring device for transformer and reactor oil chromatography, which comprises a cabinet body, wherein the inner wall of the cabinet body is provided with a box body, the top of the box body is provided with a sealing cover, sample gas and carrier gas are mixed and conveyed to a conical separation cylinder I through a conveying pipe, the mixed gas is driven to transversely enter along the inner wall to flow, centrifugal force is generated in the process, the mixed gas is screened according to molecular mass, macromolecular gas is thrown to the inner wall and small molecular gas is left in the center, and is conveyed through a conveying pipe II and a conveying pipe III respectively, so that gas group mixing is avoided, the follow-up separation accuracy is ensured, meanwhile, the macromolecular gas firstly enters a quartz tube for constant temperature adsorption, is separated according to the polarity intensity order, small molecular gas synchronously enters for rapid separation, the airflow is tidied into smooth laminar flow by using a rectifying plate, the fine separation of gas components is realized, the monitoring efficiency is further improved, and the follow-up monitoring accuracy and stability are improved.

Inventors

LI LINSHENG
XU FENG
GUO YUCHUN
YAN QIANG
LI JIANKUI
Cui Zhanhao
Shang Dengfeng
CHEN JIAYUN
LI ZIMU
Jia Chuangchuang
CHEN SHENG

Assignees

云南华电金沙江中游水电开发有限公司梨园发电分公司
江苏向上电气科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260319

Claims (10)

1. The transformer oil chromatograph on-line monitoring device comprises a cabinet body (1), and is characterized in that a box body (4) is installed on the inner wall of the cabinet body (1), a sealing cover (5) is installed at the top of the box body (4), a first partition plate (6) is fixedly installed on the inner wall of the cabinet body (1), a gas separation detection component (7) is arranged at the top of the first partition plate (6), an oil mist separation component (8) is arranged in an inner cavity of the sealing cover (5), a recoil component (9) is arranged at the top of the sealing cover (5), an oil-gas separation component (10) is arranged in an inner cavity of the box body (4), an A plate (21) is connected with an inner wall screw of the cabinet body (1), a PLC control main body (22) and a data processing system main body (23) are respectively installed on the outer wall of the A plate (21), a temperature controller (24), a time relay (25) and a main power supply (26) are respectively installed on the inner wall of the cabinet body (1), a temperature control box (27) is installed at the top of the first partition plate (6), a solenoid valve (16) is arranged at the top of the sealing cover (5), a second pipeline (19) is installed on the outer wall of the box (19), the top of the first partition plate (6) is provided with a first pipeline (15).
2. The transformer oil chromatograph on-line monitoring device of claim 1, wherein the top of the sealing cover (5) is provided with a diaphragm air pump (14) and a quantitative chamber (17) respectively, the oil-gas separation component (10) comprises an acoustic wave driving power supply (101), a second partition plate (102) and an oil cylinder (107) respectively, the top of the second partition plate (102) is provided with a transducer (103), the outer wall of the oil cylinder (107) is provided with a heating element (106), the bottom of the oil cylinder (107) is fixedly provided with a conducting seat (104), the top of the second partition plate (102) is provided with a matching inductor (105), the inner wall of the box body (4) is provided with a temperature sensor (11), the inner wall of the sealing cover (5) is provided with an air concentration sensor (12) and an air pressure sensor (13) respectively, the side wall of the box body (1) is provided with an oil taking pipe (2) and an oil return pipe (3) respectively, the terminal of the temperature control box (27) is electrically connected with the control end of the temperature controller (24), one end of the pipeline (15) is fixedly provided with a conducting seat (104), the top of the second partition plate (102) is provided with a matching inductor (105), the inner wall of the box (4) is provided with a gas concentration sensor (12) and the gas concentration sensor (12) is provided with a gas concentration sensor (12) respectively, and two solenoid valves I (16) are installed respectively in the outer wall of pipeline I (15) and pipeline II (19), every solenoid valve I (16) respectively with PLC control main part (22) electric connection, flow valve (18) and PLC control main part (22) electric connection, the one end of pipeline II (19) is connected with the end of giving vent to anger of carrier gas case (20), and the other end of pipeline II (19) is connected with the inlet end of ration room (17).
3. The transformer oil chromatography on-line monitoring device according to claim 1, wherein the gas separation detection assembly (7) comprises a first separation cylinder (72), a quartz tube (74), a quartz hollow column (79) and a TCD detector (711), wherein a first conveying pipe (71) is arranged on the outer wall of the first separation cylinder (72), a second conveying pipe (73) is arranged on the top of the first separation cylinder (72), a third conveying pipe (75) is arranged at the bottom of the first separation cylinder (72), a grating plate (76) is arranged on the inner wall of the quartz tube (74), a first connecting pipe (77) is arranged on the outer wall of the quartz tube (74), a rectifying fin (78) is arranged on the inner wall of the first connecting pipe (77), a second connecting pipe (710) is arranged on the outer wall of the quartz hollow column (79), a first exhaust pipe (712) is arranged on the outer wall of the TCD detector (711), and a second electromagnetic valve (713) is arranged on the outer wall of the first exhaust pipe (79).
4. The device for on-line monitoring transformer oil chromatography according to claim 3, wherein the first separation tube (72) and the TCD detector (711) are respectively installed at the top of the first separation tube (6), the quartz tube (74) and the quartz hollow column (79) are respectively installed in the inner cavity of the temperature control box (27), one end of the first transport tube (71) is connected with the air outlet end of the dosing chamber (17), the other end of the first transport tube (71) penetrates through the inner wall of the first separation tube (6) to be connected with the air inlet end of the first separation tube (72), one end of the third transport tube (75) is connected with the air outlet of one end of the first separation tube (72) with small opening diameter, the other end of the third transport tube (75) penetrates through the inner wall of the temperature control box (27) to be connected with the air inlet end of the quartz tube (74), the other end of the second transport tube (73) penetrates through the inner wall of the first separation tube (72) to be connected with the air inlet end of the dosing chamber (17), the two ends of the quartz tube (76) are respectively filled with the inner cavities of the grid plates (76) which are arranged at the two sides of the grid plates (76), the two grid plates (76) are arranged at the two sides of the inner cavity (76) of the grid plates (76) are respectively, one end of the first connecting pipe (77) is connected with the air outlet end of the quartz tube (74), the other end of the first connecting pipe (77) is connected with the air inlet end of the quartz hollow column (79), the number of the rectifying sheets (78) is three, a plurality of micropores are formed in the outer wall of each rectifying sheet (78), nonpolar fixing liquid is coated on the inner wall of each quartz hollow column (79), one end of the second connecting pipe (710) is connected with the air outlet end of the quartz hollow column (79), the other end of the second connecting pipe (710) is connected with the air inlet detection end of the TCD detector (711), one end of the first exhaust pipe (712) far away from the electromagnetic valve (713) is connected with the detection air outlet end of the TCD detector (711), and the TCD detector (711) is electrically connected with the PLC control main body (22) and the data processing system main body (23) respectively.
5. The transformer oil chromatographic on-line monitoring device according to claim 1, wherein the oil mist separation assembly (8) comprises a centrifugal fan (81), a motor (82), a second separation cylinder (84), a collecting piece (87) and a fourth conveying pipe (88), the outer wall of the centrifugal fan (81) is provided with a main air pipe (83), the inner wall of the second separation cylinder (84) is provided with a guide groove (85), and the inner cavity of the second separation cylinder (84) is provided with a scraping piece (86); The scraping part (86) comprises a hollow rotating shaft (861), a motor I (866) and a diversion trench (869), wherein a spiral trench (862) is formed in the outer wall of the hollow rotating shaft (861), an annular block (863) is arranged at the bottom of the hollow rotating shaft (861), a separation sheet (864) is arranged at the top of the hollow rotating shaft (861), a scraping plate (865) is arranged on the outer wall of the annular block (863), a gear I (867) is fixedly sleeved on the outer edge of an output shaft of the motor I (866), and a gear II (868) is fixedly sleeved on the top of the hollow rotating shaft (861); the collecting piece (87) comprises a first spring (871), a first piston plate (872) and an oil drain pipe (873) respectively.
6. The device for on-line monitoring transformer oil chromatography according to claim 5, wherein the motor (82) is mounted at the top of the sealing cover (5), and the output shaft of the motor (82) penetrates through the inner wall of the sealing cover (5) and is connected with the power end of the centrifugal fan (81), the centrifugal fan (81) and the separation cylinder II (84) are respectively mounted at the inner wall of the sealing cover (5), one end of the main air pipe (83) is connected with the air outlet end of the centrifugal fan (81), the other end of the main air pipe (83) is connected with the air inlet end of the separation cylinder II (84), the outer edge of the first gear (867) is meshed with the outer edge of the second gear (868), one end of the fourth conveying pipe (88) penetrates through the inner wall of the sealing cover (5) and is connected with the air outlet end of the separation cylinder II (84), one end of the fourth conveying pipe (88) is connected with the air inlet end of the air pump (14), one end of the fourth conveying pipe (88) is close to the inner wall of the hollow rotating shaft (861), the fourth conveying pipe (88) is connected with the inner wall of the hollow rotating shaft (861) and is provided with the spiral guide groove (862) which is fitted with the outer wall (16) of the spiral groove (862) of the first spiral groove (14), the spiral groove (16) is fitted with the spiral groove (862) is fitted with the spiral groove (16), the diversion trench (869) is arranged on the inner wall of the box body (4), the top opening of the diversion trench (869) is connected with the bottom opening of the separation barrel II (84), the first spring (871) is positioned at the bottom of the first piston plate (872), one end of the first spring (871) is lapped with the bottom of the first piston plate (872), the other end of the first spring (871) is lapped with the inner wall of the diversion trench (869), one end of the oil drain pipe (873) is connected with the liquid outlet end of the diversion trench (869), the other end of the oil drain pipe (873) is connected with the liquid inlet end of the tank body (4), the number of the separation sheets (864) is a plurality of, the shapes of the separation sheets (864) are respectively wavy, each wavy slope of the separation sheets (864) is respectively arranged in a staggered manner, and the outer wall of the piston plate I (872) is attached to the inner wall of the diversion trench (869) in a sliding manner.
7. The transformer oil chromatographic on-line monitoring device according to claim 1, wherein the backflushing assembly (9) comprises a gas storage tank (91), a branch pipe (95), a backflushing piece (96), a driving piece (97) and a stirring piece (98) respectively, a connecting pipe III (92) is arranged on the outer wall of the gas storage tank (91), an electromagnetic valve III (93) is arranged on the outer wall of the connecting pipe III (92), and a conveying pipe V (94) is arranged at one end, far away from the connecting pipe III (92), of the gas storage tank (91); The recoil piece (96) comprises a one-way pipe (961), a skirt piece (963) and a motor II (966), wherein a conical nozzle (962) is arranged on the inner wall of the one-way pipe (961), a ball head (964) is rotatably connected to the inner wall of the skirt piece (963), a tooth slot (965) is formed in the outer wall of the ball head (964), and a gear III (967) is fixedly sleeved on the outer edge of an output shaft of the motor II (966); The driving piece (97) comprises a guide cylinder (971) and a pulley (976) respectively, a piston plate II (972) is slidably connected to the inner wall of the guide cylinder (971), a spring II (973) is arranged at the bottom of the piston plate II (972), an exhaust pipe II (974) is arranged on the outer wall of one end, far away from the piston plate II (972), of the guide cylinder (971), and a steel wire rope (975) is arranged at the bottom of the piston plate II (972); The stirring piece (98) comprises a fixed rod (981), a rotating shaft (982) is rotatably connected to the bottom of the fixed rod (981), a rope collecting sleeve (984) is fixedly sleeved on the outer wall of the rotating shaft (982), a stirring paddle (983) is mounted on the outer wall of the rotating shaft (982), and a torsion spring (985) is arranged on the outer wall of the rotating shaft (982).
8. The transformer oil chromatography on-line monitoring device of claim 7, wherein: the air storage tank (91) is arranged at the top of the sealing cover (5), one end of the connecting pipe III (92) is connected with the air outlet end of the quantifying chamber (17), the other end of the connecting pipe III (92) is connected with the air inlet end of the air storage tank (91), the number of the electromagnetic valves III (93) is three, the three electromagnetic valves III (93) are respectively and correspondingly arranged on the outer walls of the connecting pipe III (92), the branch pipe III (95) and the exhaust pipe II (974), each electromagnetic valve III (93) is electrically connected with the PLC control main body (22), one end of the branch pipe (95) is connected with the air outlet end of the pipeline II (19), the other end of the branch pipe (95) penetrates through the inner wall of the quantifying chamber (17) and is connected with the air inlet end of the one-way pipe (961), one end of the conveying pipe V (94) is connected with the air outlet end of the air storage tank (91), the other end of the conveying pipe V (94) is connected with the air inlet end of the guide cylinder (971), the one-way pipe (961) is fixedly arranged on the inner wall of the quantifying chamber (17), one end of the one-way pipe V (95) is connected with the air outlet end of the one-way pipe (961) corresponding to the opening (4) of the air outlet end (961) of the air outlet pipe (4) is smaller than the opening (4), the skirt piece (963) is arranged on the inner wall of the quantitative chamber (17), the edge of the skirt piece (963) far away from the ball head (964) is provided with an arc surface, the arc surface angle of the skirt piece (963) is one hundred and thirty-five degrees, the motor II (966) is arranged on the outer wall of the quantitative chamber (17), the outer edge of the gear III (967) is meshed with the inner wall of the tooth groove (965), the outer wall of the ball head (964) is provided with a through hole, the rotation angle of the ball head (964) is ninety degrees, the spring II (973) is positioned at the bottom of the piston plate II (972), one end of the spring II (973) is lapped with the bottom of the piston plate II (972), the other end of the spring II (973) is lapped with the inner wall of the guide cylinder (971), one end of the exhaust pipe II (974) far away from one electromagnetic valve III (93) is connected with the exhaust end of the guide cylinder (971), one electromagnetic valve III (93) is connected with the outer wall of the time relay (975), the rotating end of the electromagnetic valve (975) is connected with the outer wall of the steel wire rope (975) is in contact with the pulley box (976), one end of the steel wire rope (975) is wound on the end of the steel wire rope (976) is wound on the outer end of the steel wire rope (975) in a certain degree, and the steel wire rope (976) is wound on the end of the steel wire box (976) is wound on the end (976), the fixed rod (981) is arranged on the inner wall of the box body (4), the stirring piece (98) is positioned in the inner cavity of the box body (4), one end of the torsion spring (985) is clamped with the outer wall of the rope receiving sleeve (984), and the other end of the torsion spring (985) is clamped with the bottom of the fixed rod (981).
9. The transformer oil chromatograph on-line monitoring device according to claim 2, wherein the acoustic wave driving power supply (101) and the transducer (103) are electrically connected with the PLC control main body (22), one end of the matching inductor (105) is electrically connected with the output end of the acoustic wave driving power supply (101), the other end of the matching inductor (105) is electrically connected with the receiving end of the transducer (103), the vibration end of the transducer (103) is in contact with the bottom of the conducting seat (104), the receiving end of the heating element (106) is electrically connected with the control end of the temperature controller (24), the temperature sensor (11) is electrically connected with the temperature controller (24), the gas pressure sensor (13) and the gas concentration sensor (12) are electrically connected with the PLC control main body (22) respectively, the liquid outlet end of the oil extraction pipe (2) penetrates through the inner walls of the cabinet body (1) and the box body (4) to the liquid inlet end of the oil cylinder (107), the liquid inlet end of the oil return pipe (3) penetrates through the inner walls of the cabinet body (1) and the box body (4) to the inner wall of the oil cylinder (107) to be connected with the inner wall of the oil cylinder (107), and the gas concentration sensor (12) is connected with the two oil cylinders (107) respectively.
10. An online detection device for oil chromatography of a reactor is characterized in that the online detection device for oil chromatography of transformer oil according to any one of claims 1-9 can also be applied to oil detection of the reactor.

Description

Transformer and reactor oil chromatograph on-line monitoring device Technical Field The invention relates to the technical field of monitoring of transformers and reactors, in particular to an oil chromatograph on-line monitoring device for transformers and reactors. Background The transformer and the reactor are important links in the power grid system, once faults occur, major accident disasters of the whole power system can be caused, the running state of the transformer and the reactor can be detected in daily running of the transformer and the reactor, the faults of the transformer and the reactor can be early warned, potential faults can be generated in time, and the method is very important for safe and reliable running of the whole power system, time for fault repair and economic loss reduction. The existing transformer and reactor oil chromatography on-line monitoring device is insufficient in separation precision, low in efficiency and weak in anti-interference capability in the gas separation link, the existing device is characterized in that mixed gas directly enters a separation assembly, gas components with different molecular masses and different polarities are easy to mix with each other, accurate screening cannot be achieved, and therefore component overlapping and peak shape disorder during subsequent detection can be caused, and accuracy of detection results can be directly affected. Disclosure of Invention The invention provides an on-line monitoring device for oil chromatography of a transformer and a reactor, which solves the problems that in the prior device, mixed gas directly enters a separation assembly in a gas separation link, gas components with different molecular weights and different polarities are easy to mix with each other, accurate screening cannot be realized, and the separation precision is insufficient and the subsequent detection result is inaccurate. The technical scheme includes that the transformer oil chromatographic online monitoring device comprises a cabinet body, a box body is arranged on the inner wall of the cabinet body, a sealing cover is arranged at the top of the box body, a first partition plate is fixedly arranged on the inner wall of the cabinet body, a gas separation detection component is arranged at the top of the first partition plate, an oil mist separation component is arranged in an inner cavity of the sealing cover, a backflushing component is arranged at the top of the sealing cover, an oil-gas separation component is arranged in the inner cavity of the box body, an A plate is connected with the inner wall of the cabinet body through screws, a PLC control main body and a data processing system main body are respectively arranged on the outer wall of the A plate, a temperature controller, a time relay and a main power supply are respectively arranged on the inner wall of the cabinet body, a temperature control box is arranged at the top of the first partition plate, a first electromagnetic valve is arranged at the top of the sealing cover, a gas carrying box is arranged on the side wall of the box, a flow valve is arranged on the outer wall of the second pipeline, and a first pipeline is arranged at the top of the partition plate. According to the preferred technical scheme, a diaphragm air pump and a quantitative chamber are respectively arranged at the top of a sealing cover, the oil-gas separation assembly comprises an acoustic wave driving power supply, a second partition plate and an oil cylinder, a transducer is arranged at the top of the second partition plate, a heating element is arranged on the outer wall of the oil cylinder, a conducting seat is fixedly arranged at the bottom of the oil cylinder, a matching inductor is arranged at the top of the second partition plate, a temperature sensor is arranged on the inner wall of a box body, an air concentration sensor and an air pressure sensor are respectively arranged on the inner wall of the sealing cover, an oil taking pipe and an oil return pipe are respectively arranged on the side wall of the box body, a wiring end of the temperature control box is electrically connected with a control end of a temperature controller, one end of a pipeline I is connected with an air outlet end of the diaphragm air pump, the other end of the pipeline I is connected with an air inlet end of the quantitative chamber, the electromagnetic valves I are respectively arranged on the outer walls of the pipeline I and the pipeline II, each electromagnetic valve I is respectively electrically connected with a PLC control main body, the flow valve is electrically connected with the flow valve I, the other end of the pipeline II is electrically connected with the air outlet end of the air outlet chamber of the pipeline II, and the other end of the temperature control box is electrically connected with the air inlet end of the quantitative chamber. As a preferable technical scheme of the invention, the gas separa