A transformer oil level thermometer seat leak detection device

Abstract

The present invention provides a transformer oil level thermometer seat leakage detection device, comprising a box body, wherein a first inner cavity and a second inner cavity are respectively opened inside the two ends of the box body, a first pressure gauge and a second pressure gauge are respectively fixedly installed on one side of the first inner cavity and the second inner cavity, a fixing sleeve is fixedly arranged at the top center position of the box body, a flow channel is opened between the first inner cavity and the second inner cavity, the bottom end of the flow channel is connected with the first inner cavity, and a thermometer seat is screwed inside the flow channel through an external thread. The pressure inside the first inner cavity and the second inner cavity can be detected simultaneously by the first pressure gauge and the second pressure gauge, and an alarm is sounded by the first alarm and the second alarm, so as to avoid the occurrence of a large deviation in the detection result caused by leakage, thereby improving the detection accuracy of the device.

Description

Technical Field

[0001] The invention relates to the technical field of transformer manufacturing, in particular to a transformer oil level thermometer socket leakage detection device. Background Art

[0002] During the transformer manufacturing process, an oil level thermometer will be installed on the transformer to detect the oil temperature in the transformer tank.

[0003] The Chinese utility model patent with publication number CN216247061U discloses a transformer oil level thermometer seat leak test fixture, the main body of the fixture is a container with an opening on the top, the top opening is closed by a cover plate and a sealing ring, the cover plate is provided with an inflation nozzle mounting hole, a pressure gauge mounting hole and an oil level thermometer seat mounting hole, the inflation nozzle is welded on the inflation nozzle mounting hole, and the inflation nozzle is connected to a high-pressure gas source; a pressure gauge is installed on the pressure gauge mounting hole, and an oil level thermometer seat to be tested is installed on the oil level thermometer seat mounting hole; when in use, the fixture is closed by the cover plate and the sealing ring, and dry air is filled into the interior of the fixture through the inflation nozzle, and the qualification of the oil level thermometer seat is judged by whether the pressure inside the fixture is reduced. However, when the fixture leaks, it is inaccurate to judge the qualification of the oil level thermometer seat by this method, resulting in a large deviation in the detection result of the oil level thermometer seat.

[0004] To this end, the present invention provides a transformer oil level thermometer socket leakage detection device. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a transformer oil level thermometer seat leakage detection device to solve the problems raised in the above-mentioned background technology. The present invention can simultaneously detect the pressure inside the first inner cavity and the second inner cavity through a first pressure gauge and a second pressure gauge, and alarm through a first alarm and a second alarm, thereby avoiding large deviations in the detection results caused by leakage, thereby improving the detection accuracy of the device.

[0006] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a transformer oil level thermometer seat leakage detection device, comprising a box body, a first inner cavity and a second inner cavity are respectively opened inside the two ends of the box body, a first pressure gauge and a second pressure gauge are respectively fixedly installed on one side of the first inner cavity and the second inner cavity, a fixing sleeve is fixedly arranged at the top center position of the box body, a flow channel is opened between the first inner cavity and the second inner cavity, the bottom end of the flow channel is connected with the first inner cavity, a thermometer seat is screwed with an external thread inside the flow channel, limiting mechanisms are arranged on both sides of the thermometer seat, a thermometer probe is screwed with an internal thread inside the thermometer seat, a sealing cover is movably installed on the thermometer probe, the sealing cover is fixedly installed on the top of the box body through the fixing sleeve, and a through hole is opened on the top of the second inner cavity corresponding to the inner side of the fixing sleeve.

[0007] Furthermore, the external thread is provided on the outer wall of the thermometer seat, and a fixing nut is fixedly provided on the outer side of the top end of the thermometer seat.

[0008] Furthermore, a first sealing rubber ring is fixedly provided on the inner wall of the bottom end of the flow channel, and the first sealing rubber ring is sleeved on the outer side of the bottom end of the thermometer seat.

[0009] Furthermore, a second sealing rubber ring is fixedly arranged between the fixing nut and the top end of the flow channel, and the fixing nut is in a regular hexagonal shape.

[0010] Furthermore, the limiting mechanism includes a limiting rod, the limiting rod is in an "L" shape, a clamping groove is provided inside the top end of the limiting rod, and the clamping groove is clamped on both sides of the fixing nut.

[0011] Furthermore, limiting slide grooves are provided on the inner sides of the fixing sleeves corresponding to the top sides of the box body, the bottom end of the limiting rod is slidably installed inside the limiting slide groove, and a spring is fixedly arranged between the bottom end of the limiting rod and the inner wall of the limiting slide groove.

[0012] Furthermore, the internal thread is formed on the inner wall of the top end of the thermometer seat, and the upper limit rotation of the thermometer probe is provided with a rotating nut, and the rotating nut is screwed to the inside of the top end of the thermometer seat through the internal thread.

[0013] Furthermore, a third sealing rubber ring is fixedly provided on the inner wall of the rotating nut, the third sealing rubber ring is sleeved on the outer side of the thermometer probe, and the bottom end of the thermometer probe is arranged inside the flow channel.

[0014] Furthermore, a sealing ring is provided between the sealing cover and the thermometer probe, the sealing cover is threadedly mounted on the outside of the fixing sleeve, and a sealing gasket is provided between the inside of the sealing cover and the top of the fixing sleeve.

[0015] Furthermore, an inflation port is fixedly provided on one side of the top of the first inner cavity corresponding to the outer side of the sealing cover, and an electromagnetic valve is fixedly provided on the inflation port. A first alarm and a second alarm are fixedly installed on both sides of the front end of the box body.

[0016] Beneficial effects of the invention: A transformer oil level thermometer seat leakage detection device of the invention comprises a box body, an inflation port, a first inner cavity, a second inner cavity, a first pressure gauge, a second pressure gauge, a first alarm, a second alarm, a sealing cover, a thermometer probe, a thermometer seat, a flow channel, a first sealing rubber ring, a limit rod, a fixing sleeve, a second sealing rubber ring, a fixing nut, a rotating nut, a third sealing rubber ring, an external thread, a slot, and a through hole.

[0017] 1. The transformer oil level thermometer seat leakage detection device is provided with a first inner cavity and a second inner cavity inside a box body, and the pressures in the first inner cavity and the second inner cavity are detected respectively by a first pressure gauge and a second pressure gauge, and the pressure changes before and after the first pressure gauge and the second pressure gauge are compared, and then the first alarm and the second alarm are used to alarm the changes in the pressures in the first inner cavity and the second inner cavity, so as to judge whether there is a gas leakage in the device, and eliminate the deviation of the detection result caused by the gas leakage, so as to improve the accuracy of the detection result of the device.

[0018] 2. The transformer oil level thermometer seat leakage detection device can seal the thermometer seat and the flow channel through the first sealing rubber ring and the second sealing rubber ring to prevent air leakage between the thermometer seat and the flow channel; the fixing sleeve and the sealing cover can be sealed through the sealing gasket, and the thermometer probe and the sealing cover can be sealed through the sealing ring, so that the gas leaked between the thermometer seat and the thermometer probe will enter the interior of the second inner cavity through the through hole, thereby causing changes in the first pressure gauge and the second pressure gauge, which is convenient for leak detection of the thermometer seat.

[0019] 3. The transformer oil level thermometer seat leakage detection device is provided with limit rods on both sides of the thermometer seat through the limit slide groove and the spring, and the limit rods are clamped on both sides of the fixing nut under the action of the spring, so that the fixing nut and the thermometer seat can be limited through the clamping groove, the stability of the thermometer seat can be improved, and the thermometer probe can be conveniently installed inside the thermometer seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of a transformer oil level thermometer seat leakage detection device of the present invention;

[0021] Figure 2 It is a front cross-sectional view of a transformer oil level thermometer seat leakage detection device of the present invention;

[0022] Figure 3 A transformer oil level thermometer seat leakage detection device according to the present invention Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a box structure diagram of a transformer oil level thermometer seat leakage detection device of the present invention;

[0024] Figure 5 It is a structural diagram of a thermometer seat of a transformer oil level thermometer seat leakage detection device of the present invention;

[0025] Figure 6 This is a structural diagram of a limit rod of a transformer oil level thermometer seat leakage detection device of the present invention;

[0026] In the figure: 1. box body; 2. inflation port; 3. first inner cavity; 4. second inner cavity; 5. first pressure gauge; 6. second pressure gauge; 7. first alarm; 8. second alarm; 9. sealing cover; 10. thermometer probe; 11. thermometer seat; 12. flow channel; 13. first sealing rubber ring; 14. limit rod; 15. fixing sleeve; 16. second sealing rubber ring; 17. fixing nut; 18. rotating nut; 19. third sealing rubber ring; 20. external thread; 21. slot; 22. through hole. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0028] See also Figures 1 to 6The present invention provides a technical solution: a transformer oil level thermometer seat leakage detection device, comprising a box body 1, wherein a first inner cavity 3 and a second inner cavity 4 are respectively provided at both ends of the box body 1, and a first pressure gauge 5 and a second pressure gauge 6 are respectively fixedly installed on one side of the first inner cavity 3 and the second inner cavity 4, and a fixing sleeve 15 is fixedly provided at the top center position of the box body 1, a flow channel 12 is provided between the first inner cavity 3 and the second inner cavity 4, and the bottom end of the flow channel 12 is communicated with the first inner cavity 3, and a thermometer seat 11 is screwed and installed inside the flow channel 12 through an external thread 20, and a limiting mechanism is provided on both sides of the thermometer seat 11, and the inner portion of the thermometer seat 11 is provided with a fixed sleeve 15, and a fixed sleeve 15 is fixedly provided at the top center position of the box body 1, and a flow channel 12 is provided between the first inner cavity 3 and the second inner cavity 4, and the bottom end of the flow channel 12 is communicated with the first inner cavity 3, and a thermometer seat 11 is screwed and installed inside the flow channel 12 through an external thread 20, and a limiting mechanism is provided on both sides of the thermometer seat 11, and the inner portion of the thermometer seat 11 is provided with a fixed sleeve 15 ... A thermometer probe 10 is screwed with an internal thread, a sealing cover 9 is movably installed on the thermometer probe 10, and the sealing cover 9 is fixedly installed on the top of the box body 1 through a fixing sleeve 15. A through hole 22 is opened on the top of the second inner cavity 4 corresponding to the inner side of the fixing sleeve 15. The internal pressures of the first inner cavity 3 and the second inner cavity 4 can be detected respectively by the first pressure gauge 5 and the second pressure gauge 6. The pressure changes before and after the first pressure gauge 5 and the second pressure gauge 6 are compared, so as to determine whether the device is leaking and whether there is leakage between the thermometer seat 11 and the thermometer probe 10, thereby facilitating the leak test of the thermometer seat and improving the accuracy of the detection result of the device.

[0029] In this embodiment, the external thread 20 is provided on the outer wall of the thermometer seat 11, and a fixing nut 17 is fixedly provided on the outer side of the top of the thermometer seat 11. A first sealing rubber ring 13 is fixedly provided on the inner wall of the bottom end of the flow channel 12. The first sealing rubber ring 13 is sleeved on the outer side of the bottom end of the thermometer seat 11, and a second sealing rubber ring 16 is fixedly provided between the fixing nut 17 and the top of the flow channel 12. The shape of the fixing nut 17 is a regular hexagon, and the limiting mechanism includes a limiting rod 14, and the shape of the limiting rod 14 is "L"-shaped. A card slot 21 is provided inside the top of the limiting rod 14, and the card slot 21 is clamped in the fixing nut On both sides of 17, limiting slide grooves are provided on the inner sides of the corresponding fixing sleeves 15 on both sides of the top of the box body 1, and the bottom end of the limiting rod 14 is slidingly installed inside the limiting slide groove. A spring is fixedly arranged between the bottom end of the limiting rod 14 and the inner wall of the limiting slide groove. The first sealing rubber ring 13 and the second sealing rubber ring 16 can increase the sealing between the thermometer seat 11 and the flow channel 12 to prevent air leakage between the flow channel 12 and the thermometer seat 11. The limiting rod 14 facilitates the limiting of the fixing nut 17 under the action of the spring and the limiting slide groove, so that the thermometer seat 11 can be limited, which is convenient for the subsequent installation of the thermometer probe 10 inside the thermometer seat 11.

[0030] In this embodiment, the internal thread is provided on the inner wall of the top end of the thermometer seat 11, and the upper limit rotation of the thermometer probe 10 is provided with a rotating nut 18, and the rotating nut 18 is screwed and installed inside the top end of the thermometer seat 11 through the internal thread, and a third sealing rubber ring 19 is fixedly provided on the inner wall of the rotating nut 18, and the third sealing rubber ring 19 is sleeved on the outer side of the thermometer probe 10, and the bottom end of the thermometer probe 10 is arranged inside the flow channel 12. The thermometer probe 10 is conveniently installed inside the thermometer seat 11 through the action of the internal thread and the rotating nut 18, and the thermometer probe 10 and the thermometer seat 11 are conveniently sealed through the third sealing rubber ring 19, so as to facilitate the subsequent detection of the coordination and oil leakage between the thermometer probe 10 and the thermometer seat 11.

[0031] In this embodiment, a sealing ring is arranged between the sealing cover 9 and the thermometer probe 10, the sealing cover 9 is screwed and installed on the outer side of the fixing sleeve 15, and a sealing gasket is arranged between the inner side of the sealing cover 9 and the top of the fixing sleeve 15, the sealing ring can be used to seal the thermometer probe 10 and the sealing cover 9, and the sealing gasket can be used to seal the fixing sleeve 15 and the sealing cover 9, so as to facilitate the sealing of the connection between the thermometer seat 11 and the thermometer probe 10, so that the leakage enters the interior of the second inner cavity 4 through the through hole 22, so that the degrees of the first pressure gauge 5 and the second pressure gauge 6 are changed, and it is convenient to perform a leak test on the thermometer seat 11.

[0032] In this embodiment, an inflation port 2 is fixedly provided on one side of the top of the first inner cavity 3 corresponding to the outer side of the sealing cover 9, and an electromagnetic valve is fixedly provided on the inflation port 2. The first alarm 7 and the second alarm 8 are fixedly installed on both sides of the front end of the box body 1, respectively. Dry air is conveniently filled into the interior of the first inner cavity 3 through the inflation port 2 to change the internal pressure thereof, and the inflation port 2 is closed by the electromagnetic valve to facilitate subsequent leak detection of the thermometer seat 11.

[0033] When using the transformer oil level thermometer seat leakage detection device, a controller is arranged on the outside of the box body 1, and the controller is electrically connected to the first pressure gauge 5, the second pressure gauge 6, the first alarm 7, and the second alarm 8 through electric wires for control, the sealing cover 9 is rotated and separated from the fixing sleeve 15, the sealing cover 9 is removed, and the thermometer seat 11 is screwed and installed inside the flow channel 12 through the external thread 20, the bottom end of the thermometer seat 11 is inserted into the inside of the first sealing rubber ring 13 and squeezed, and the limit rod 14 is moved to both sides, and the bottom end of the limit rod 14 slides in the limit position inside the limit slide groove, and presses The compression spring is used, and the temperature base 11 is rotated by the fixing nut 17 and the tool. The fixing nut 17 will squeeze the second sealing rubber ring 16, adjust the position of the fixing nut 17, loosen the limiting rod 14, and the limiting rod 14 moves in the opposite direction under the action of the limiting slide groove and the spring elastic force, so that the two ends of the fixing nut 17 are stuck in the inside of the card slot 21, which is convenient for limiting the fixing nut 17 by the limiting rod 14 and the card slot 21, so that the thermometer seat 11 can be fixed and limited, and the sealing cover 9 can be cut into two parts from the position of the central axis, and the two parts are fixed by screws. A rubber pad is provided between the two parts, so that the two parts of the sealing cover 9 can be disassembled, and the sealing cover 9 is conveniently installed on the thermometer probe 10 above the corresponding rotating nut 18, and the thermometer probe 10 installed with the sealing cover 9 is inserted into the interior of the thermometer seat 11, and the thermometer probe 10 is fixed by the action of the rotating nut 18 and the internal thread, and the sealing cover 9 is screwed and installed on the outside of the fixing sleeve 15, so that the interior of the sealing cover 9 is connected with the second inner cavity 4 through the through hole 22, and a certain pressure of dry air is inflated into the interior of the first inner cavity 3 through the inflation port 2, and the first pressure gauge 5 is recorded at this time. and the readings of the second pressure gauge 6, keep the device still, observe the changes in the readings of the first pressure gauge 5 and the second pressure gauge 6, and control the first alarm 7 and the second alarm 8 to sound an alarm after the changes occur. When only the first pressure gauge 5 changes, control the first alarm 7 to sound an alarm, and it can be determined that the device has a leak. When both the first pressure gauge 5 and the second pressure gauge 6 change, it can be determined that a leak occurs between the thermometer seat 11 and the thermometer probe 10, and the fit is poor, and the product is unqualified. When both the first pressure gauge 5 and the second pressure gauge 6 do not change, there is no leak and the product is qualified.

[0034] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A transformer oil level thermometer seat leakage detection device, comprising a box (1), characterized in that: A first inner cavity (3) and a second inner cavity (4) are respectively provided inside the two ends of the box body (1), a first pressure gauge (5) and a second pressure gauge (6) are respectively fixedly installed on one side of the first inner cavity (3) and the second inner cavity (4), a fixing sleeve (15) is fixedly provided at the center position of the top of the box body (1), a flow channel (12) is provided between the first inner cavity (3) and the second inner cavity (4), the bottom end of the flow channel (12) is communicated with the first inner cavity (3), and the interior of the flow channel (12) is connected to the first inner cavity (3). A thermometer seat (11) is screwed and installed via an external thread (20), and limit mechanisms are provided on both sides of the thermometer seat (11). A thermometer probe (10) is screwed and installed inside the thermometer seat (11) via an internal thread. A sealing cover (9) is movably installed on the thermometer probe (10), and the sealing cover (9) is fixedly installed on the top of the box body (1) via a fixing sleeve (15). A through hole (22) is opened at the top of the second inner cavity (4) corresponding to the inner side of the fixing sleeve (15). The external thread (2 0) is opened on the outer wall of the thermometer seat (11), a fixing nut (17) is fixedly provided on the outer side of the top end of the thermometer seat (11), a first sealing rubber ring (13) is fixedly provided on the inner wall of the bottom end of the flow channel (12), the first sealing rubber ring (13) is sleeved on the outer side of the bottom end of the thermometer seat (11), a second sealing rubber ring (16) is fixedly provided between the fixing nut (17) and the top end of the flow channel (12), the fixing nut (17) is in the shape of a regular hexagon, and the sealing cover A sealing ring is arranged between the thermometer probe (10) and the sealing cover (9), the sealing cover (9) is screwed and installed on the outside of the fixing sleeve (15), a sealing gasket is arranged between the inner side of the sealing cover (9) and the top of the fixing sleeve (15), an inflation port (2) is fixedly arranged on one side of the top of the first inner cavity (3) corresponding to the outer side of the sealing cover (9), an electromagnetic valve is fixedly arranged on the inflation port (2), and a first alarm (7) and a second alarm (8) are fixedly arranged on both sides of the front end of the box body (1), respectively.

2. A transformer oil level thermometer seat leakage detection device according to claim 1, characterized in that: The limiting mechanism comprises a limiting rod (14), the limiting rod (14) is in an "L" shape, a clamping groove (21) is provided inside the top end of the limiting rod (14), and the clamping groove (21) is clamped on both sides of the fixing nut (17).

3. A transformer oil level thermometer seat leakage detection device according to claim 2, characterized in that: Limiting slide grooves are provided on the inner sides of the fixing sleeves (15) corresponding to the top sides of the box body (1), the bottom end of the limiting rod (14) is slidably mounted inside the limiting slide groove, and a spring is fixedly arranged between the bottom end of the limiting rod (14) and the inner wall of the limiting slide groove.

4. A transformer oil level thermometer seat leakage detection device according to claim 1, characterized in that: The internal thread is formed on the inner wall of the top end of the thermometer seat (11); the thermometer probe (10) is rotatably mounted with a rotating nut (18); the rotating nut (18) is screwed to the inside of the top end of the thermometer seat (11) via the internal thread.

5. A transformer oil level thermometer seat leakage detection device according to claim 4, characterized in that: A third sealing rubber ring (19) is fixedly arranged on the inner wall of the rotating nut (18), and the third sealing rubber ring (19) is sleeved on the outside of the thermometer probe (10). The bottom end of the thermometer probe (10) is arranged inside the flow channel (12).

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