CN-116818419-B - Main transformer pipeline oil extraction system and method

CN116818419BCN 116818419 BCN116818419 BCN 116818419BCN-116818419-B

Abstract

The invention relates to a main transformer pipeline oil extraction system and a method, which are used for extracting oil from a main transformer pipeline, comprises an oil way connecting pipe with one end communicated with a main transformer pipeline, an oil storage bin communicated with the other end of the oil way connecting pipe, a one-way check valve arranged on the oil way connecting pipe the oil pumping device is arranged on the oil storage bin and communicated with the bottom end of the oil storage bin, the exhaust device is arranged at the upper end of the oil storage bin, and the oil discharging device is arranged on the side wall of the oil storage bin. When the device is used, the upper adjusting handle and the lower adjusting handle are screwed, so that the upper rubber valve and the lower rubber valve are respectively clung to the middle layer plate of the two-way valve, the two-way check valve is closed, the exhaust valve and the oil discharge valve are closed, the one-way valve adjusting handle is screwed, the directional valve rubber valve is clung to the middle layer plate of the one-way valve, the one-way check valve is closed, and the initial state is set.

Inventors

WANG ZHIYUAN
ZHANG BAOQUAN
LI QIANG
HU WEITAO
LI JIANPENG
LIU CHANG
LI JIAYI

Assignees

国网河北省电力有限公司超高压分公司
国家电网有限公司

Dates

Publication Date: 20260505
Application Date: 20230601

Claims (6)

1. The main transformer pipeline oil extraction system is used for extracting oil from a main transformer pipeline (31) and is characterized by comprising an oil way connecting pipe (32) with one end communicated with the main transformer pipeline (31), an oil storage bin (33) with the other end communicated with the oil way connecting pipe (32), a one-way check valve (34) arranged on the oil way connecting pipe (32), an oil pumping device which is arranged on the oil storage bin (33) and is communicated with the bottom end of the oil storage bin (33), an exhaust device which is arranged at the upper end of the oil storage bin (33) and an oil discharging device which is arranged on the side wall of the oil storage bin (33); the oil pumping device comprises an oil pumping pipe (1) with one end communicated with the bottom end of the oil storage bin (33), a needle tube (51) arranged at the other end of the oil pumping pipe (1) and a bidirectional check valve (52) arranged on the oil pumping pipe (1); The bidirectional check valve (52) comprises a bidirectional valve middle layer plate (2) fixedly arranged on an oil pumping pipe (1), an upper adjusting device arranged above the bidirectional valve middle layer plate (2) and a lower adjusting device arranged below the bidirectional valve middle layer plate (2), wherein the bidirectional valve middle layer plate (2) is provided with eight bidirectional valve elliptical through holes (3) distributed around the center of the bidirectional valve middle layer plate (2), the middle position of the bidirectional valve middle layer plate (2) is penetrated with a bidirectional valve guide column (4), the bidirectional valve elliptical through holes (3) are distributed between the bidirectional valve guide column (4) and the edge of the bidirectional valve middle layer plate (2), the upper adjusting device and the lower adjusting device are arranged on the bidirectional valve guide column (4), the upper adjusting device comprises an upper guide barrel (5) with a downward opening, an upper layer plate (6) fixedly arranged at the lower end of the upper guide barrel (5) and positioned on the outer side wall of the upper guide barrel (5), eight upper layer plates (7) arranged on the upper layer plate (6), four upper layer plates (6) arranged between the upper layer plate (6) and the upper layer plate (2) and the upper layer plate (8) are fixedly connected with the upper layer plate adjusting device at one side of the upper layer plate (8), the upper layer plate through holes (7) are formed between the edges of the upper guide barrel (5) and the upper layer plate (6) and divide the upper layer plate (6) equally, the upper layer plate through holes (7) are arranged opposite to the bidirectional valve elliptical through holes (3), the upper layer rubber valves (8) are arranged at the positions where the upper layer plate through holes (7) are formed in a staggered mode, the upper position adjusting device comprises first adjusting teeth (9) formed in the side wall of the upper guide barrel (5), an upper adjusting shaft (10) formed in one side of the upper guide barrel (5) and second adjusting teeth (11) formed in the upper adjusting shaft (10) and meshed with the first adjusting teeth (9), the first adjusting teeth (9) are vertically distributed on the side wall of the upper guide barrel (5), the second adjusting teeth (11) are arranged on the outer surface of the upper adjusting shaft (10), one end of the upper adjusting shaft (10) is rotatably connected with the inner side wall of the oil pumping pipe (1), and the other end of the upper adjusting shaft penetrates through the side wall of the oil pumping pipe (1) to the outer side of the oil pumping pipe (1); The lower adjusting device comprises a lower guide barrel (14) with an upward opening, a lower layer plate (15) fixedly arranged at the upper end of the lower guide barrel (14) and positioned on the outer side wall of the lower guide barrel (14), eight lower layer plate through holes (16) arranged on the lower layer plate (15), four lower layer rubber valves (17) arranged between the lower layer plate (15) and the two-way valve middle layer plate (2) and fixedly connected with the lower layer plate (15) and a lower position adjusting device arranged on one side of the lower guide barrel (14), wherein the lower layer plate through holes (16) are arranged between the edges of the lower guide barrel (14) and the lower layer plate (15) and equally divide the lower layer plate (15), the lower layer plate through holes (16) are opposite to the two-way valve oval through holes (3), the lower layer rubber valves (17) are arranged at the positions of the lower layer plate through holes (16) in a staggered mode, and the lower layer rubber valves (17) and the upper layer rubber valves (8) are arranged in a staggered mode; The lower position adjusting device comprises a third adjusting tooth (18) arranged on the side wall of the lower guide barrel (14), a lower adjusting shaft (19) arranged on one side of the lower guide barrel (14), and a fourth adjusting tooth (20) arranged on the lower adjusting shaft (19) and meshed with the third adjusting tooth (18), wherein the third adjusting tooth (18) is vertically distributed under the side wall of the lower guide barrel (14), the fourth adjusting tooth (20) is arranged under the outer surface of the lower adjusting shaft (19), one end of the lower adjusting shaft (19) is rotationally connected with the inner side wall of the oil pumping pipe (1), and the other end of the lower adjusting shaft penetrates through the side wall of the oil pumping pipe (1) to the outer side of the oil pumping pipe (1); The oil pumping pipe is characterized in that a lower sealing ring (21) is arranged at the penetrating position of the lower adjusting shaft (19) and the oil pumping pipe (1), the lower adjusting shaft (19) is in interference fit with the lower sealing ring (21), and a lower adjusting handle (22) is arranged at one end of the lower adjusting shaft (19) located at the outer side of the oil pumping pipe (1).
2. The main transformer pipeline oil extraction system according to claim 1, wherein the one-way check valve (34) comprises a one-way valve middle layer plate (35) fixedly arranged on the inner side of the oil path connecting pipe (32), eight one-way valve elliptical through holes (36) which are arranged on the one-way valve middle layer plate (35) and are distributed around the circle center of the one-way valve middle layer plate (35), one-way valve guide posts (37) fixedly arranged on the one-way valve middle layer plate (35) and positioned on the right side of the one-way valve middle layer plate (35), and one-way adjusting devices arranged on the right side of the one-way valve middle layer plate (35), wherein the eight one-way valve elliptical through holes (36) are distributed between the one-way valve guide posts (37) and the edges of the one-way valve middle layer plate (35); The one-way regulating device comprises a one-way valve guide barrel (38) with a left opening, a one-way valve layer plate (39) fixedly arranged at the left end of the one-way valve guide barrel (38) and positioned on the outer side wall of the one-way valve guide barrel (38), eight one-way valve layer plate (39) through holes arranged on the one-way valve layer plate (39), a one-way valve rubber valve (40) arranged between the one-way valve layer plate (39) and the one-way valve middle layer plate (35) and fixedly connected with the one-way valve layer plate (39), and a one-way valve regulating device arranged at one side of the one-way valve guide barrel (38), wherein the one-way valve layer plate (39) through holes are arranged between the one-way valve guide barrel (38) and the edges of the one-way valve layer plate (39) and equally divide the one-way valve layer plate (39), the one-way valve layer plate (39) through holes are opposite to the one-way valve elliptical through holes (36), and the one-way valve rubber valve (40) covers the positions of the one-way valve layer plate (39) through holes. The one-way valve position adjusting device comprises a fifth adjusting tooth (41) arranged on the side wall of the one-way valve guide barrel (38), a one-way valve adjusting shaft (42) arranged on one side of the one-way valve guide barrel (38), and a sixth adjusting tooth (43) arranged on the one-way valve adjusting shaft (42) and meshed with the fifth adjusting tooth (41), wherein the fifth adjusting tooth (41) is transversely distributed on the side wall of the one-way valve guide barrel (38), the sixth adjusting tooth (43) is arranged on the outer surface of the one-way valve adjusting shaft (42), one end of the one-way valve adjusting shaft (42) is rotatably connected with the inner side wall of the oil way connecting pipe (32), and the other end of the one-way valve adjusting shaft (42) penetrates through the side wall of the oil way connecting pipe (32) to the outer side of the oil way connecting pipe (32); a check valve sealing ring (44) is arranged at the penetrating position of the check valve adjusting shaft (42) and the oil way connecting pipe (32), and the check valve adjusting shaft (42) is in interference fit with the check valve sealing ring (44); One end of the one-way valve adjusting shaft (42) positioned outside the oil way connecting pipe (32) is provided with a one-way valve adjusting handle (45).
3. A main transformer line oil extraction system according to claim 2, characterized in that the oil reservoir (33) is provided with a tip (46), the exhaust means being provided at the tip (46), the exhaust means comprising an exhaust pipe (47) provided at the tip (46) and communicating with the inside of the oil reservoir (33) and an exhaust valve (48) provided on the exhaust pipe (47); the oil discharging device comprises an oil discharging pipe (49) arranged on the side wall of the oil storage bin (33) and an oil discharging valve (50) arranged on the oil discharging pipe (49).
4. The main transformer pipeline oil extraction system as claimed in claim 3, wherein an upper sealing ring (12) is arranged at the penetrating position of the upper adjusting shaft (10) and the oil pumping pipe (1), and the upper adjusting shaft (10) is in interference fit with the upper sealing ring (12).
5. The main transformer pipeline oil extraction system of claim 4, wherein the upper adjusting shaft (10) is provided with an upper adjusting handle (13) at one end positioned outside the oil extraction pipe (1).
6. The main transformer pipeline oil extraction system as set forth in claim 5, comprising the steps of: Step S1, screwing an upper adjusting handle and a lower adjusting handle to enable an upper rubber valve and a lower rubber valve to be respectively clung to a bidirectional valve middle layer plate, enabling a bidirectional check valve (52) to be closed, closing an exhaust valve (48) and an oil discharge valve (50), screwing a one-way valve adjusting handle (45) to enable the one-way valve rubber valve to be clung to a one-way valve middle layer plate (35), enabling the one-way check valve (34) to be closed, and finishing initial state setting; S2, screwing a one-way valve adjusting handle (45), enabling a gap to be formed between a one-way valve rubber valve and a one-way valve middle layer plate (35), enabling a one-way check valve (34) to be opened, enabling insulating oil in a main transformer to enter an oil storage bin (33) through an oil way connecting pipe (32), screwing the one-way valve adjusting handle (45) after the oil storage bin (33) stores a certain amount, closing the one-way check valve (34), and opening an exhaust valve (48) to enable gas in the insulating oil to be discharged through an exhaust pipe (47) of a tip (46); s3, rotating a lower adjusting handle to enable a certain gap to be formed between the lower rubber valve and the elliptical through holes of the middle layer plate of the two-way valve, pulling a needle tube (51), enabling insulating oil to sequentially pass through the remaining four upper layer plate through holes of the upper layer plate, the four elliptical through holes of the middle layer plate of the two-way valve and the lower layer plate through holes, enabling a certain amount of insulating oil to be extracted from the needle tube (51), and blocking the four elliptical through holes capable of flowing through the middle layer plate of the two-way valve by the lower rubber valve if backflow occurs due to the characteristics of the lower rubber valve; S4, rotating a lower adjusting handle to enable a lower rubber valve to be clung to an elliptical through hole of a middle layer plate of the two-way valve, rotating an upper adjusting handle to enable an upper rubber valve to have a certain gap with the elliptical through hole of the middle layer plate of the two-way valve, pushing a needle tube (51), enabling insulating oil to sequentially pass through the remaining four lower layer plate through holes of the lower layer plate, the four elliptical through holes of the middle layer plate of the two-way valve and the upper layer plate through holes, enabling the insulating oil in the needle tube (51) to be discharged to the upper end position of the oil pumping pipe (1) together with gas, and discharging the gas through an exhaust pipe (47), wherein due to the characteristic of the upper rubber valve, if backflow occurs, the four elliptical through holes of the middle layer plate of the two-way valve, which can flow, can be blocked by the lower rubber valve; S5, repeating the steps S3 and S4 until the insulating oil with the gas removed is obtained in the needle tube (51); And S6, opening an oil discharge valve (50) and discharging the insulating oil in the oil storage bin (33) through an oil discharge pipe (49).

Description

Main transformer pipeline oil extraction system and method Technical Field The invention relates to a main transformer pipeline oil extraction system and a method. Background The existing main transformer oil extraction pipeline tool is not provided with an anti-reflux valve, especially when oil is extracted from a 35kV transformer, the condition of internal low pressure is easily caused by long-time operation equipment, in the routine oil sample extraction process, if a non-return function is not provided, air is sucked into the transformer in a reverse way due to higher risk, the internal insulation of the transformer is seriously reduced, and then a discharging accident occurs. The prior art CN202110327984.4 discloses a method for detecting the state of a countercurrent valve, which comprises the following steps of performing topological connection on hardware, additionally arranging an electromagnetic reset device on the countercurrent valve of a fan, respectively connecting BMC with the electromagnetic reset device, the fan and the countercurrent valve, detecting a rotating speed signal of the fan by the BMC, controlling the electromagnetic reset device, detecting the state of the countercurrent valve when the fan is powered by a server and the rotating speed signal is detected by the BMC, judging whether a first fault is generated according to the detection result, reporting the first fault to the server according to the judgment result, detecting the state of the countercurrent valve when a power supply in the server is powered off, judging whether a second fault is generated according to the detection result, reporting the second fault to the server according to the judgment result, and detecting the state of the countercurrent valve, so that whether the fault is generated according to the state of the countercurrent valve, judging the reason of the fault, and performing maintenance action as soon as possible, so that the server normally operates, and improving the stability of the server. The prior document CN201810248390.2, a venous blood sample collection anti-reflux valve device and a blood taking needle device, relates to the technical field of medical appliances, provides the blood taking needle device, the device comprises a vein blood taking needle, a tube plug puncture needle and a connecting part for connecting the vein blood taking needle and the tube plug puncture needle, wherein the connecting part is provided with a vein blood sample collection anti-reflux valve device; the countercurrent valve device comprises a first connecting seat, an elastic countercurrent valve and a second connecting seat, wherein a through hole is formed in the middle of the first connecting seat, the elastic countercurrent valve is arranged on the first connecting seat, the second connecting seat is matched with the first connecting seat to form a cavity for accommodating the elastic countercurrent valve, the second connecting seat is connected with the first connecting seat in a clamping mode, the through hole communicated with the outside is formed in the second connecting seat, and therefore collected blood can be effectively prevented from flowing back into a human body, and damage to the human body caused by the fact that contaminated blood enters the human body is avoided. In addition, the whole sterile treatment of the blood collection container can be omitted, and the cost is saved. By adopting the two modes, the gas in the needle tube cannot be removed, and the problem that gas bubbles in the needle tube affect experimental results cannot be solved. Disclosure of Invention The invention aims to provide a main transformer pipeline oil extraction system and a main transformer pipeline oil extraction method capable of removing gas in a needle tube. The invention adopts the following technical scheme: the invention is used for extracting oil from a main transformer pipeline, and comprises an oil way connecting pipe, an oil storage bin, a one-way check valve, an oil pumping device, an exhaust device and an oil discharging device, wherein one end of the oil way connecting pipe is communicated with the main transformer pipeline, the oil storage bin is communicated with the other end of the oil way connecting pipe, the one-way check valve is arranged on the oil way connecting pipe, the oil pumping device is arranged on the oil storage bin and is communicated with the bottom end of the oil storage bin, the exhaust device is arranged at the upper end of the oil storage bin, and the oil discharging device is arranged on the side wall of the oil storage bin. The one-way check valve comprises a one-way valve middle layer plate fixedly arranged at the inner side of an oil way connecting pipe, eight one-way valve elliptical through holes which are arranged on the one-way valve middle layer plate and distributed around the center of the one-way valve middle layer plate, a one-way valve guide post fixedly arranged on