CN-121977767-A - Liquid check valve sealing performance detection device

Abstract

The invention relates to the technical field of valve body detection and discloses a liquid check valve sealing performance detection device which comprises a support base, a detection bin, a first driving piece, a detection mechanism and a hydraulic pressure sensor, wherein the detection bin is arranged at the top end of the support base in a sliding mode, a positioning groove is formed in the detection bin, the first driving piece is arranged at one side of the detection bin and can drive the detection bin to move along the detection bin so that the detection bin is close to a detection position, a first elastic piece is arranged between the output end of the first driving piece and the detection bin, the detection mechanism is arranged at the top end of the detection bin and comprises a sealing positioning head, the sealing positioning head is arranged in a conical mode to adjust the position of the detection bin through an inner side liquid check valve, and the hydraulic pressure sensor is arranged at one side of the detection mechanism and is used for detecting the sealing performance of the liquid check valve based on the pressure of detection liquid in the liquid check valve. This liquid check valve sealing performance detection device can solve among the prior art effectively, is difficult to carry out accurate alignment with the detecting tube, leads to the comparatively loaded down with trivial details problem of installation process of liquid check valve.

Inventors

• LI GUANGYAO
• SUN XIAOYU

Assignees

• 龙口市动力油管有限公司

Dates

Publication Date

20260505

Application Date

20260309

Claims (10)

1. 1. Liquid check valve sealing performance detection device, its characterized in that includes: A support base for supporting the components and mechanisms; the detection bin is arranged at the top end of the supporting base in a sliding manner, a positioning groove is formed in the detection bin, and the liquid one-way valve to be detected is placed in the positioning groove in a detection state; the first driving piece is arranged on one side of the detection bin and can drive the detection bin to longitudinally move along the support base so that the detection bin is close to the detection position, and a first elastic piece is arranged between the output end of the first driving piece and the detection bin; the detection mechanism is configured at the top end of the detection bin and comprises a sealing positioning head, wherein the sealing positioning head is arranged in a conical shape so as to adjust the position of the detection bin through an inner liquid one-way valve; and the hydraulic pressure sensor is arranged on one side of the detection mechanism and detects the tightness of the liquid check valve based on the pressure of the detection liquid in the liquid check valve.
2. 2. The device for detecting the sealing performance of the liquid check valve according to claim 1, wherein a positioning light source is arranged on one side of the sealing positioning head, and the position of the detection chamber is primarily adjusted by the first driving member based on the projection of the positioning light source in the detection chamber and a predetermined alignment position.
3. 3. The liquid check valve sealing performance detection device according to claim 1, wherein the detection mechanism further comprises: the fixed end of the second driving piece is connected with the supporting base; The guide connecting piece is connected to the output end of the second driving piece through the first connecting rod, and the sealing positioning head is connected to one end, far away from the second driving piece, of the guide connecting piece, and the guide connecting piece can be communicated with the liquid one-way valve through the sealing positioning head.
4. 4. The liquid check valve sealing performance detection apparatus according to claim 3, wherein the detection mechanism further comprises: The detection liquid storage and supply cylinder is detachably arranged at the top end of the diversion connecting piece and is communicated with the diversion connecting piece, and one side of the detection liquid storage and supply cylinder is communicated with a liquid inlet pipe; The liquid way pressurizing plug body is arranged in the detection liquid storage and supply cylinder in a sliding mode, the liquid way pressurizing plug body is connected to the output end of the third driving piece, and the third driving piece is connected to one side of the first connecting rod through the second connecting rod.
5. 5. The device for detecting the sealing performance of the liquid one-way valve according to claim 4, wherein a liquid inlet channel and a liquid outlet channel are formed in the inner side of the diversion connecting piece, the liquid inlet channel is communicated with the detection liquid storage and supply cylinder and the sealing positioning head, and the liquid outlet channel is arranged on one side of the sealing positioning head; One side of the liquid outlet channel is provided with a three-way valve, a first pipeline of the three-way valve is communicated with the liquid outlet channel, one side of the three-way valve, which is far away from the first pipeline, is provided with a second pipeline, and the hydraulic pressure sensor is configured at a third pipeline of the three-way valve.
6. 6. The device for detecting the sealing performance of the liquid one-way valve according to claim 5, wherein a positioning plate is slidably arranged on the inner side of the detection bin, one side of the positioning plate is connected with a limit guide rod, and the limit guide rod penetrates out of the detection bin to be arranged; And a third elastic piece is arranged between the positioning plate and the detection bin wall at the outer side of the limit guide rod.
7. 7. The device for detecting the sealing performance of a liquid check valve according to claim 6, wherein the positioning plate is a heating plate, a sealing assembly is provided at the top of the detecting chamber, and the sealing assembly comprises: the guide connecting piece is arranged through the sealing cover body in a sliding manner; the second elastic piece is arranged on the outer side of the flow guiding connecting piece, one end, far away from the sealing cover body, of the flow guiding connecting piece is connected with the connecting plate, and the second elastic piece is located between the sealing cover body and the connecting plate.
8. 8. The device for detecting the sealing performance of the liquid check valve according to claim 7, wherein a side bearing plate is arranged on one side of the sealing cover body, a plurality of supporting cam bodies are rotatably arranged on one side of the side bearing plate, and rollers are rotatably arranged at the bottoms of the supporting cam bodies; the side wall of the detection bin is provided with a support bar corresponding to the roller; the outside of several gyro wheel rotates jointly and is provided with the link, the link is driven to move towards the one side that keeps away from the detection storehouse.
9. 9. The device for detecting the sealing performance of a liquid check valve according to claim 8, wherein the top end of the connecting frame is connected with a driving mechanism, and the driving mechanism comprises: The second threaded sleeve is rotatably arranged on one side of the fixed plate, and the fixed plate is connected to the top end of the sealing cover body; The second rotating piece is arranged at the top end of the second threaded sleeve in a threaded manner, and the second rotating piece can drive the second threaded sleeve to vertically move when rotating; The second sliding pin is connected to the bottom end of the second threaded sleeve, a third sliding groove is formed in the top of the connecting frame, and the second sliding pin is arranged in the third sliding groove in a sliding mode.
10. 10. The device for detecting the sealing performance of the liquid one-way valve according to claim 9, wherein an adjusting handle is rotatably arranged on the outer side of the three-way valve and used for controlling the on-off of the second pipeline/the third pipeline and the first pipeline; One side of the adjusting handle is rotatably provided with a first rotating piece, and the outer side of the first rotating piece is provided with a first threaded sleeve in a threaded manner; a first sliding pin is fixedly arranged on one side of the first threaded sleeve, a second sliding groove is formed in the inner side of the adjusting handle, and the first sliding pin is arranged at the second sliding groove in a sliding mode; The bottom of first rotating member is connected with the square pole, the sliding tray with square pole assorted is seted up at the top of second rotating member, square pole slides and sets up in the sliding tray inboard.

Description

Liquid check valve sealing performance detection device Technical Field The invention relates to the technical field of valve body detection, in particular to a device for detecting sealing performance of a liquid one-way valve. Background The liquid one-way valve is an important element for controlling the one-way flow of liquid in a pipeline system, and is widely applied to industries such as petrochemical industry, electric power, metallurgy, ships, aerospace and the like. The sealing performance directly affects the safe operation of the pipeline system, the service life of equipment and the environmental protection. At present, the check valve sealing performance is mainly detected by adopting a first direct observation method for visually checking whether the valve leaks or not, a second pressure attenuation method for judging the sealing performance by monitoring the pressure change at two ends of the valve, and a third gas detection method for detecting the sealing performance by using a gas leakage detector. In the related art, in order to be convenient for carry out fixed mounting to liquid check valve when detecting, for example, the patent of prior art publication No. CN222013414U provides a check valve tightness detection device, the device is to be tested the check valve and is placed on placing the platform, then start electric push rod, electric push rod output can make and place the platform and remove, place the platform and remove and can make the axle center of check valve aim at two detecting tubes, and then be convenient for detect the check valve of equidimension not, after aiming at, rotate the knob, the knob rotates and can make positive and negative tooth lead screw rotate, positive and negative tooth lead screw rotates and can make the movable block remove, and then carry out the centre gripping to the check valve, after the centre gripping to the check valve is fixed, can make positive and negative tooth lead screw unable reverse rotation under the effect of ratchet and pawl, thereby make two movable blocks and the stable laminating of check valve lateral part, convenient to use. According to the prior art scheme, although the effect of fixed installation and detection of the check valves with different sizes is achieved through the arrangement of the height-adjustable placing table, the interfaces at the two ends of the liquid check valve are difficult to align with the detection pipe accurately (if repeated adjustment and trial are needed) in the height-adjusting process, so that the installation process of the liquid check valve is complicated (particularly when the check valves with different specifications are frequently replaced), and the working efficiency of the tightness detection of the liquid check valve is affected. Disclosure of Invention Aiming at the defects existing in the prior art, the invention provides the liquid one-way valve sealing performance detection device, which can effectively solve the problem that in the prior art, accurate alignment is difficult to be carried out with a detection tube, so that the installation process of the liquid one-way valve is complicated. In order to achieve the above purpose, the invention is realized by the following technical scheme: the invention provides a liquid check valve sealing performance detection device, comprising: A support base for supporting the components and mechanisms; the detection bin is arranged at the top end of the supporting base in a sliding manner, a positioning groove is formed in the detection bin, and the liquid one-way valve to be detected is placed in the positioning groove in a detection state; the first driving piece is arranged on one side of the detection bin and can drive the detection bin to longitudinally move along the support base so that the detection bin is close to the detection position, and a first elastic piece is arranged between the output end of the first driving piece and the detection bin; the detection mechanism is configured at the top end of the detection bin and comprises a sealing positioning head, wherein the sealing positioning head is arranged in a conical shape so as to adjust the position of the detection bin through an inner liquid one-way valve; and the hydraulic pressure sensor is arranged on one side of the detection mechanism and detects the tightness of the liquid check valve based on the pressure of the detection liquid in the liquid check valve. Further, a positioning light source is configured on one side of the sealing positioning head, and the position of the detection bin is initially adjusted through the first driving piece based on projection of the positioning light source in the detection bin and a preset alignment position. Further, the detection mechanism further includes: the fixed end of the second driving piece is connected with the supporting base; The guide connecting piece is connected to the output end of the second driving piece through t