CN116337340B - Waterproof performance detection device of transformer - Google Patents
Waterproof performance detection device of transformer Download PDFInfo
- Publication number
- CN116337340B CN116337340B CN202310395041.4A CN202310395041A CN116337340B CN 116337340 B CN116337340 B CN 116337340B CN 202310395041 A CN202310395041 A CN 202310395041A CN 116337340 B CN116337340 B CN 116337340B
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- transformer
- installation cavity
- water
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- 238000001514 detection method Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 82
- 238000005507 spraying Methods 0.000 claims abstract description 36
- 238000009434 installation Methods 0.000 claims abstract description 32
- 230000001502 supplementing effect Effects 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 9
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000007921 spray Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 244000309464 bull Species 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention relates to the technical field of transformers, in particular to a waterproof performance detection device for a transformer, which comprises a rack for placing the transformer, wherein a first installation cavity and a second installation cavity are formed in the rack, water flows back to a water storage cavity through a through hole, so that waste of water resources is reduced, potential safety hazards caused by water flowing to the ground to operators can be avoided, personal safety of the operators can be guaranteed, the first driven gear is driven to reciprocate through intermittent connection of the first driven gear, a first incomplete gear and a second incomplete gear, the first driven gear drives a driving gear to rotate through a first rotating shaft, the driving gear drives a second rotating shaft to rotate through a second driven gear, the first spraying piece and the second spraying piece can reciprocate to spray front and rear ends of the transformer, the spraying range of the first spraying piece and the second spraying piece is improved, and the waterproof performance detection effect of the transformer is improved.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a waterproof performance detection device for a transformer.
Background
The transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, and the main components are a primary coil, a secondary coil and an iron core, and the transformer has the main functions of: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization, etc., the transformer can be divided into: oil immersed transformers, single-phase transformers, electric furnace transformers, corner transformers, high-current transformers, exciting transformers, etc.
The transformer waterproof property detection device that is proposed by chinese publication No. CN112393846a, including detecting platform and motor, the motor output runs through detecting platform lateral wall and fixedly connected with bull stick, the bull stick is kept away from motor one end and is connected with detecting platform lateral wall rotation, the cover is equipped with two first gears on the bull stick, detecting platform upside uses detecting platform midpoint to be axisymmetric fixedly connected with fixed shell, install the screw rod in the fixed shell, screw rod one end is connected with fixed shell top wall rotation, screw rod is kept away from fixed shell top wall one end fixedly connected with second gear, second gear and first gear engagement, the cover is equipped with the nut on the screw rod, nut one side and fixed shell lateral wall sliding connection, the spout that runs through the fixed shell lateral wall is seted up to the opposite one side of fixed shell, the nut is close to the rotation and is connected with the shower nozzle on the lateral wall of spout one side. According to the invention, the transformer can be subjected to waterproof detection from different angles, so that the detection result is more accurate and reasonable.
According to the technical scheme, when the spray head sprays water, the water can directly flow to the ground due to the fact that the spray head is not provided with the mechanism for collecting the water, if the transformer is in electric leakage, the current on the transformer can cause damage to a human body along with the water, the technical scheme adopts the spring to avoid collision between the nut and the limiting plate, but the technical scheme does not limit the movement track of the spring, and the spring is unstable, so that the spring is extremely easy to break after multiple telescopic movements, and the spray head cannot deflect in position.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, a mechanism for collecting water bodies is not arranged, so that the device can cause negative influence on operators when in use, and in addition, the prior art does not limit the movement track of a spring, so that the spring is extremely easy to break after carrying out unstable telescopic movement for many times, and the nozzle cannot deflect in position.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the waterproof performance detection device for the transformer comprises a rack for placing the transformer, wherein a first installation cavity and a second installation cavity are formed in the rack, a first rotating shaft extending into the second installation cavity is rotatably installed on the rack through a bearing, a first spraying piece is fixedly installed on the first rotating shaft, a second rotating shaft is rotatably installed on the rack through the bearing, and a second spraying piece is fixedly installed on the second rotating shaft;
a water storage cavity for filling water is formed in the frame, a water pump is fixedly arranged in the water storage cavity, the water storage cavity is fixedly connected with a water outlet pipe through the water pump, and a telescopic hose connected with the first spraying piece and the second spraying piece is fixedly connected to the water outlet pipe;
the frame is provided with a driving mechanism for driving the first rotating shaft and the second rotating shaft to reciprocally rotate.
Preferably, the first rotating shaft is horizontally arranged at the front end position of the transformer, and the second rotating shaft is horizontally arranged at the rear end position of the transformer.
Preferably, the water storage cavity is located at a position above the first installation cavity, and a through hole communicated with the water storage cavity is formed in the rack.
Preferably, the water storage cavity is fixedly connected with a water supplementing pipe, and the water supplementing pipe is fixedly provided with an electromagnetic valve for controlling the water supplementing pipe to be opened and closed.
Preferably, the driving mechanism comprises a motor fixedly arranged in a first mounting cavity, the output end of the motor is fixedly connected with a third rotating shaft, the first mounting cavity is rotatably provided with a fourth rotating shaft penetrating through the second mounting cavity through a bearing, a first bevel gear is fixedly sleeved on the third rotating shaft, and a second bevel gear in meshed connection with the first bevel gear is fixedly sleeved on the fourth rotating shaft;
the inner wall of the second installation cavity is integrally connected with a bracket, a fifth rotating shaft and a sixth rotating shaft which penetrate through the bracket are rotatably installed in the second installation cavity through bearings, a third bevel gear is fixedly sleeved on the fourth rotating shaft, and a fourth bevel gear which is in meshed connection with the third bevel gear is fixedly sleeved on the fifth rotating shaft;
a synchronous belt is connected between the fifth rotating shaft and the sixth rotating shaft, a first incomplete gear is fixedly sleeved on the fifth rotating shaft, a second incomplete gear is fixedly sleeved on the sixth rotating shaft, and a first driven gear which is in intermittent meshing connection with the first incomplete gear and the second incomplete gear is fixedly sleeved at one end of the first rotating shaft in the second mounting cavity;
one end of the first rotating shaft extending out of the second mounting cavity is fixedly sleeved with a driving gear, and the second rotating shaft is fixedly sleeved with a second driven gear which is in meshed connection with the driving gear.
Preferably, the third rotating shaft is horizontally arranged at the two sides of the motor, and the fourth rotating shaft is longitudinally arranged at the position above the outer end of the third rotating shaft.
Preferably, the third bevel gear and the fourth bevel gear are arranged at the outer end position of the second installation cavity, and the first incomplete gear, the second incomplete gear and the first driven gear are arranged at the inner end position of the second installation cavity.
Preferably, the fifth rotating shaft and the sixth rotating shaft are horizontally arranged at the upper side and the lower side of the first rotating shaft, and the fourth rotating shaft is arranged at the lower position of the fifth rotating shaft.
Compared with the prior art, the invention has the following advantages:
1. according to the invention, the water storage cavity can be periodically replenished with water through the cooperation of the electromagnetic valve and the water replenishing pipe, so that the water storage cavity is guaranteed to always have water, and when the device is used for spraying, water can flow back into the water storage cavity through the through holes, so that the waste of water resources is reduced, potential safety hazards caused by water flowing to the ground to operators can be avoided, and the personal safety of the operators is guaranteed.
2. According to the invention, the third rotating shaft drives the fourth rotating shaft to rotate through the meshing connection of the first bevel gear and the second bevel gear, the fourth rotating shaft drives the fifth rotating shaft to rotate through the meshing connection of the third bevel gear and the fourth bevel gear, the fifth rotating shaft drives the sixth rotating shaft to rotate through the synchronous belt, the fifth rotating shaft and the sixth rotating shaft drive the first driven gear to rotate in a reciprocating manner through the intermittent connection of the first driven gear, the first incomplete gear and the second incomplete gear, the first driven gear drives the driving gear to rotate through the first rotating shaft, the driving gear drives the second rotating shaft to rotate through the second driven gear, so that the first spraying piece and the second spraying piece can rotate in a reciprocating manner to spray the front end and the rear end of the transformer, the spraying range of the first spraying piece and the second spraying piece is improved, and the detection effect of waterproof performance of the transformer is improved.
Drawings
Fig. 1 is a schematic structural diagram of a waterproof performance detecting device for a transformer according to the present invention;
fig. 2 is an enlarged schematic diagram of a partial a structure of a waterproof performance detection device of a transformer according to the present invention;
fig. 3 is a schematic diagram of a partial enlarged structure of a waterproof performance detection device B of a transformer according to the present invention;
fig. 4 is a schematic diagram of a connection structure of a first rotating shaft, a second rotating shaft, a first driven gear and a driving gear of the waterproof performance detection device of a transformer according to the present invention;
fig. 5 is a schematic diagram illustrating a connection structure of a first rotating shaft, a fifth rotating shaft, a sixth rotating shaft, a first incomplete gear, a second incomplete gear and a driving gear of the waterproof performance detection device for a transformer according to the present invention.
In the figure: 1. a frame; 2. a first rotating shaft; 3. a first spray member; 4. a second rotating shaft; 5. a second spray member; 6. a water storage chamber; 7. a water pump; 8. a water outlet pipe; 9. a flexible hose; 10. a first mounting cavity; 11. a second mounting cavity; 12. a motor; 13. a third rotating shaft; 14. a fourth rotating shaft; 15. a first bevel gear; 16. a second bevel gear; 17. a bracket; 18. a fifth rotating shaft; 19. a sixth rotating shaft; 20. a third bevel gear; 21. a fourth bevel gear; 22. a synchronous belt; 23. a first incomplete gear; 24. a second incomplete gear; 25. a first driven gear; 26. a drive gear; 27. a second driven gear; 28. a transformer.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1-5, a waterproof performance detection device for a transformer comprises a frame 1 for placing a transformer 28, wherein a first installation cavity 10 and a second installation cavity 11 are formed in the frame 1, a first rotating shaft 2 extending into the second installation cavity 11 is rotatably installed on the frame 1 through a bearing, the first rotating shaft 2 is horizontally arranged at the front end position of the transformer 28, a first spraying piece 3 is fixedly installed on the first rotating shaft 2, a second rotating shaft 4 is rotatably installed on the frame 1 through a bearing, the second rotating shaft 4 is horizontally arranged at the rear end position of the transformer 28, a second spraying piece 5 is fixedly installed on the second rotating shaft 4, and the waterproof performance detection effect for the transformer 28 is improved by arranging the first spraying piece 3 and the second spraying piece 5 at the front end position and the rear end position of the transformer 28;
the water storage cavity 6 for filling the water body is formed in the frame 1, the water storage cavity 6 is positioned above the first mounting cavity 10, a through hole communicated with the water storage cavity 6 is formed in the frame 1, a water supplementing pipe is fixedly connected to the water storage cavity 6, an electromagnetic valve for controlling the water storage cavity to be opened and closed is fixedly arranged on the water supplementing pipe, the water storage cavity 6 can be regularly supplemented with water through the cooperation of the water supplementing pipe and the electromagnetic valve, the water body can flow back into the water storage cavity 6 through the through hole, so that the waste of water resources is reduced, the environmental protection of the detection device is improved, the negative influence of the large-area water body flowing to the ground on the personal safety of an operator can be avoided, and the service life of the detection device is prolonged;
the water storage cavity 6 IS fixedly provided with a water pump 7, the model of the water pump 7 IS IS150-125-315, the water storage cavity 6 IS fixedly connected with a water outlet pipe 8 through the water pump 7, the water outlet pipe 8 IS fixedly connected with a telescopic hose 9 connected with the first spraying piece 3 and the second spraying piece 5, and the first spraying piece 3 and the second spraying piece 5 cannot be interfered by movement due to the ductility of the telescopic hose 9;
the frame 1 is internally provided with a driving mechanism for driving the first rotating shaft 2 and the second rotating shaft 4 to reciprocally rotate, and the driving mechanism can drive the first spraying piece 3 and the second spraying piece 5 to reciprocally rotate through the first rotating shaft 2 and the second rotating shaft 4, so that the spraying range of the first spraying piece 3 and the second spraying piece 5 is improved, the water body can more comprehensively spray the transformer 28, and the waterproof detection effect of the transformer 28 is improved;
further description: the driving mechanism comprises a motor 12 fixedly arranged in a first installation cavity 10, the model of the motor 12 is B5685M, the output end of the motor 12 is fixedly connected with a third rotating shaft 13, the third rotating shaft 13 is horizontally arranged at two sides of the motor 12, the first installation cavity 10 is rotatably provided with a fourth rotating shaft 14 penetrating through a second installation cavity 11 through a bearing, the fourth rotating shaft 14 is longitudinally arranged at the position above the outer end of the third rotating shaft 13, a first bevel gear 15 is fixedly sleeved on the third rotating shaft 13, a second bevel gear 16 in meshed connection with the first bevel gear 15 is fixedly sleeved on the fourth rotating shaft 14, and the third rotating shaft 13 can drive the fourth rotating shaft 14 to rotate through the meshed connection of the first bevel gear 15 and the second bevel gear 16;
the inner wall of the second installation cavity 11 is integrally connected with a bracket 17, a fifth rotating shaft 18 and a sixth rotating shaft 19 which penetrate through the bracket 17 are rotatably installed in the second installation cavity 11 through bearings, the fifth rotating shaft 18 and the sixth rotating shaft 19 are horizontally arranged at the upper side and the lower side of the first rotating shaft 2, the fourth rotating shaft 14 is arranged at the lower side of the fifth rotating shaft 18, a third bevel gear 20 is fixedly sleeved on the fourth rotating shaft 14, a fourth bevel gear 21 which is in meshed connection with the third bevel gear 20 is fixedly sleeved on the fifth rotating shaft 18, the third bevel gear 20 and the fourth bevel gear 21 are arranged at the outer end position of the second installation cavity 11, and the fourth rotating shaft 14 can drive the fifth rotating shaft 18 to rotate through the meshed connection of the third bevel gear 20 and the fourth bevel gear 21;
a synchronous belt 22 is connected between the fifth rotating shaft 18 and the sixth rotating shaft 19, a first incomplete gear 23 is fixedly sleeved on the fifth rotating shaft 18, a second incomplete gear 24 is fixedly sleeved on the sixth rotating shaft 19, a first driven gear 25 which is in intermittent meshing connection with the first incomplete gear 23 and the second incomplete gear 24 is fixedly sleeved at one end of the first rotating shaft 2 in the second installation cavity 11, the first incomplete gear 23, the second incomplete gear 24 and the first driven gear 25 are arranged at the inner end position of the second installation cavity 11, and the first incomplete gear 23 and the second incomplete gear 24 can drive the first driven gear 25 to rotate in a reciprocating manner through the intermittent meshing connection of the incomplete gear and the gear;
one end of the first rotating shaft 2 extending to the outside of the second mounting cavity 11 is fixedly sleeved with a driving gear 26, the second rotating shaft 4 is fixedly sleeved with a second driven gear 27 in meshed connection with the driving gear 26, and the first rotating shaft 2 and the second rotating shaft 4 can synchronously rotate through the meshed connection of the driving gear 26 and the second driven gear 27.
The invention can explain its functional principle by the following modes of operation:
opening an electromagnetic valve, enabling water to enter the water storage cavity 6 through the water supplementing pipe, starting the water pump 7, enabling the water to enter the telescopic hose 9 through the water outlet pipe 8, enabling the water to enter the first spraying piece 3 and the second spraying piece 5 through the telescopic hose 9, enabling the water to be sprayed onto the transformer 28, and enabling the water to flow back into the water storage cavity 6 through the through hole;
the motor 12 is started to drive the third rotating shaft 13 to rotate, the third rotating shaft 13 drives the first bevel gear 15 to rotate, the first bevel gear 15 drives the second bevel gear 16 to rotate, the second bevel gear 16 drives the fourth rotating shaft 14 to rotate, the fourth rotating shaft 14 drives the third bevel gear 20 to rotate, and the third bevel gear 20 drives the fourth bevel gear 21 to rotate;
the fourth bevel gear 21 drives the fifth rotating shaft 18 to rotate, the fifth rotating shaft 18 drives the sixth rotating shaft 19 to rotate through the synchronous belt 22, the fifth rotating shaft 18 drives the first incomplete gear 23 to rotate, the sixth rotating shaft 19 drives the second incomplete gear 24 to rotate, and the first driven gear 25 is in reciprocating rotation through intermittent connection with the first incomplete gear 23 and the second incomplete gear 24;
the first driven gear 25 drives the first rotating shaft 2 to rotate, the first rotating shaft 2 drives the driving gear 26 to rotate, the driving gear 26 drives the second driven gear 27 to rotate, the second driven gear 27 drives the second rotating shaft 4 to rotate, the first rotating shaft 2 drives the first spraying piece 3 to reciprocate, the second rotating shaft 4 drives the second spraying piece 5 to reciprocate, so that the front face and the back face of the transformer 28 are sprayed, and waterproof detection operation of the transformer 28 is completed.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (8)
1. The waterproof performance detection device for the transformer comprises a frame (1) for placing a transformer (28), and is characterized in that a first installation cavity (10) and a second installation cavity (11) are formed in the frame (1), a first rotating shaft (2) extending into the second installation cavity (11) is rotatably installed on the frame (1) through a bearing, a first spraying piece (3) is fixedly installed on the first rotating shaft (2), a second rotating shaft (4) is rotatably installed on the frame (1) through a bearing, and a second spraying piece (5) is fixedly installed on the second rotating shaft (4);
a water storage cavity (6) for filling water is formed in the frame (1), a water pump (7) is fixedly installed in the water storage cavity (6), a water outlet pipe (8) is fixedly connected to the water storage cavity (6) through the water pump (7), and a telescopic hose (9) connected with the first spraying piece (3) and the second spraying piece (5) is fixedly connected to the water outlet pipe (8);
the frame (1) is internally provided with a driving mechanism for driving the first rotating shaft (2) and the second rotating shaft (4) to reciprocally rotate.
2. The waterproof performance detection device for the transformer according to claim 1, wherein the first rotating shaft (2) is horizontally arranged at the front end position of the transformer (28), and the second rotating shaft (4) is horizontally arranged at the rear end position of the transformer (28).
3. The waterproof performance detection device of the transformer according to claim 1, wherein the water storage cavity (6) is located above the first installation cavity (10), and a through hole communicated with the water storage cavity (6) is formed in the frame (1).
4. A transformer waterproof property detection device according to claim 3, wherein the water storage cavity (6) is fixedly connected with a water supplementing pipe, and the water supplementing pipe is fixedly provided with an electromagnetic valve for controlling the opening and closing of the water supplementing pipe.
5. The waterproof performance detection device of the transformer according to claim 1, wherein the driving mechanism comprises a motor (12) fixedly installed in a first installation cavity (10), the output end of the motor (12) is fixedly connected with a third rotating shaft (13), the first installation cavity (10) is rotatably provided with a fourth rotating shaft (14) penetrating through a second installation cavity (11) through a bearing, the third rotating shaft (13) is fixedly sleeved with a first bevel gear (15), and the fourth rotating shaft (14) is fixedly sleeved with a second bevel gear (16) in meshed connection with the first bevel gear (15);
a bracket (17) is integrally connected to the inner wall of the second installation cavity (11), a fifth rotating shaft (18) and a sixth rotating shaft (19) which penetrate through the bracket (17) are rotatably installed in the second installation cavity (11) through bearings, a third bevel gear (20) is fixedly sleeved on the fourth rotating shaft (14), and a fourth bevel gear (21) which is in meshed connection with the third bevel gear (20) is fixedly sleeved on the fifth rotating shaft (18);
a synchronous belt (22) is connected between the fifth rotating shaft (18) and the sixth rotating shaft (19), a first incomplete gear (23) is fixedly sleeved on the fifth rotating shaft (18), a second incomplete gear (24) is fixedly sleeved on the sixth rotating shaft (19), and a first driven gear (25) which is in intermittent meshing connection with the first incomplete gear (23) and the second incomplete gear (24) is fixedly sleeved at one end of the first rotating shaft (2) in the second mounting cavity (11);
one end of the first rotating shaft (2) extending to the outside of the second mounting cavity (11) is fixedly sleeved with a driving gear (26), and the second rotating shaft (4) is fixedly sleeved with a second driven gear (27) which is meshed with the driving gear (26).
6. The waterproof performance detection device for the transformer according to claim 5, wherein the third rotating shaft (13) is horizontally arranged at two sides of the motor (12), and the fourth rotating shaft (14) is longitudinally arranged at a position above the outer end of the third rotating shaft (13).
7. The waterproof performance detection device for the transformer according to claim 5, wherein the third bevel gear (20) and the fourth bevel gear (21) are arranged at the outer end position of the second installation cavity (11), and the first incomplete gear (23), the second incomplete gear (24) and the first driven gear (25) are arranged at the inner end position of the second installation cavity (11).
8. The waterproof performance detection device for the transformer according to claim 6, wherein the fifth rotating shaft (18) and the sixth rotating shaft (19) are horizontally arranged at the upper side and the lower side of the first rotating shaft (2), and the fourth rotating shaft (14) is arranged at the lower side of the fifth rotating shaft (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310395041.4A CN116337340B (en) | 2023-04-14 | 2023-04-14 | Waterproof performance detection device of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310395041.4A CN116337340B (en) | 2023-04-14 | 2023-04-14 | Waterproof performance detection device of transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116337340A CN116337340A (en) | 2023-06-27 |
| CN116337340B true CN116337340B (en) | 2023-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310395041.4A Active CN116337340B (en) | 2023-04-14 | 2023-04-14 | Waterproof performance detection device of transformer |
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| Country | Link |
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| CN (1) | CN116337340B (en) |
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| CN217442776U (en) * | 2022-03-14 | 2022-09-16 | 江苏勇易机械制造有限公司 | Tightness detection device for machine tool protective cover |
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- 2023-04-14 CN CN202310395041.4A patent/CN116337340B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855805A (en) * | 2019-03-25 | 2019-06-07 | 昆山正信检测有限公司 | A kind of closed guard gate's air tightness detection apparatus |
| CN212539530U (en) * | 2020-07-30 | 2021-02-12 | 天津市鸿锦电气有限公司 | Waterproof performance testing device for distribution board |
| WO2022068096A1 (en) * | 2020-09-29 | 2022-04-07 | 淄博创立机电科技有限公司 | Wastewater treatment apparatus |
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| CN215573578U (en) * | 2021-08-23 | 2022-01-18 | 安徽福达包装材料有限公司 | Sealing performance detection structure for preparing plastic sucking disc |
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| Publication number | Publication date |
|---|---|
| CN116337340A (en) | 2023-06-27 |
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