Sealing test device for gas relay

Abstract

The utility model relates to the technical field of relay detection, in particular to a sealing test device for a gas relay. Comprising a test box, a first test groove and a second test groove are formed in the test box, a partition plate is installed in the test box, and the partition plate is located between the first test groove and the second test groove. According to the utility model, through the arrangement of the sealing assembly, when the gas relay is tested, the gas relay is placed in the sealing box, the two groups of connectors are connected with the two ends of the gas relay in a sealing manner, and then air is conveyed into the gas relay through the air inlet pipe; the liquid in the second test groove is observed in the conveying process, so that whether the sealing performance of the gas relay is good or not is tested, the sealing device can conduct a sealing test on the gas relay in the process that a sensor is not used, meanwhile, regular maintenance and calibration of the sensor are not needed, and the testing efficiency is improved. Therefore, the test cost of the gas relay is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of relay detection, and particularly relates to a sealing test device for a gas relay. Background Art

[0002] The gas relay is an important safety protection device on the oil-immersed transformer. It is installed on the connecting pipe between the transformer cover and the oil storage cabinet. Under the action of the gas or oil flow generated by the internal fault of the transformer, the signal or trip circuit is connected, so that the relevant device sends out an alarm signal or cuts off the transformer from the power grid, thereby protecting the transformer.

[0003] After searching, in the prior art, Chinese patent application number: CN202210499094.6 discloses a gas relay sealing performance test device, including a relay body and a sealed chamber No. 1, an oxygen concentration detector is installed on the outer side of the No. 1 sealed chamber, a rotating motor is fixedly connected to one side of the inner wall of the No. 1 sealed chamber, a limiting component is fixedly connected to the outer side of the rotating motor, and one side of the limiting component is tightly fitted with the outside of the relay body, and a sealing component is connected to one end of the outside of the relay body. By comparing the changes in oxygen concentration inside the No. 1 sealed chamber and the No. 2 sealed chamber before and after the test, it can be seen whether they are within the normal error variation range, and whether the sealing performance of the relay body is good is judged, so that the device can well achieve the purpose of testing the sealing performance of the relay body, and at the same time, the limiting component facilitates the rapid disassembly and assembly of the relay body inside the No. 1 sealed chamber.

[0004] But the device still has the following defects:

[0005] The device needs to use advanced sensors when in use, and its manufacturing cost is relatively high. In addition, the high-precision sensors require regular maintenance and calibration, which increases the test cost of the test device. At the same time, the long-term use of the device will inevitably reduce the sealing of the No. 1 sealed chamber, causing flow between the No. 1 sealed chamber and the outside air, so that the oxygen concentration detector cannot effectively detect the No. 1 sealed chamber, thereby affecting the test results of the gas relay and causing errors in the test results. Utility Model Content

[0006] The purpose of the utility model is to provide a sealing test device for a gas relay. By setting a seal, the sealing device can perform a sealing test on the gas relay when the sensor is not in use. At the same time, there is no need to perform regular maintenance and calibration on the sensor, thereby reducing the test cost of the gas relay to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sealing test device for a gas relay, comprising a test box, the test box is provided with a first test slot and a second test slot, a partition is installed in the test box, the partition is located between the first test slot and the second test slot, an introduction tube is installed on the partition, one end of the introduction tube extends to the bottom of the second test slot, a test assembly for performing a sealing test on a gas relay is installed in the first test slot, and a lifting assembly for driving the test assembly to move vertically is installed in the first test slot;

[0008] The test assembly includes a sealed box, a sealing cover is sealed on the sealed box, a second bellows is installed on one side outer wall of the sealed box, an end of the second bellows away from the sealed box is installed on a partition, and the second bellows is connected to the introduction pipe.

[0009] Furthermore, connecting pipes are installed on the inner walls of both ends of the sealing box, a third corrugated pipe is installed at one end of the two groups of connecting pipes, and a connector is installed at one end of the two groups of third corrugated pipes away from the connecting pipes.

[0010] Furthermore, an air inlet pipe and an exhaust pipe are respectively installed on the outer walls of both sides of the test box, and a first corrugated pipe is installed on the inner walls of both sides of the first test slot, and one end of two groups of the first corrugated pipes are respectively connected to the air inlet pipe and the exhaust pipe.

[0011] Furthermore, the other ends of the two groups of the first corrugated pipes are respectively mounted on the outer walls at both ends of the sealing box, and the other ends of the two groups of the first corrugated pipes are respectively connected to the two groups of connecting pipes.

[0012] Furthermore, the lifting assembly includes a threaded rod, and three groups of movable grooves are opened on the inner wall of the test box on the side away from the partition, one group of the movable grooves is rotatably connected with a threaded rod, and the other two groups of the movable grooves are installed with guide rods, and the two groups of guide rods are symmetrically arranged with the threaded rod as the center.

[0013] Furthermore, a motor is installed on the top of the test box, the output end of the motor penetrates into one of the groups of movable grooves, and the output end of the motor is transmission-connected to one end of the threaded rod.

[0014] Furthermore, the lifting assembly also includes three groups of moving blocks, which are all installed on the outer wall of the sealing box away from the second corrugated pipe. One group of moving blocks is threadedly connected to the threaded rod, and the other two groups of moving blocks are slidably connected to the two groups of guide rods.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model sets a sealing component. When testing a gas relay, the gas relay is placed in a sealing box, two sets of connectors are sealed and connected to both ends of the gas relay, and air is transported into the gas relay through an air inlet pipe. During the transporting process, the liquid in the second test tank is observed, so as to test whether the sealing of the gas relay is good. The sealing device can perform a sealing test on the gas relay when the sensor is not used. At the same time, there is no need to perform regular maintenance and calibration on the sensor, thereby reducing the test cost of the gas relay.

[0017] 2. The utility model adopts the arrangement of a test box, a sealing box and a lifting assembly. When a gas relay is subjected to a sealing test, the lifting assembly drives the sealing box to move in the first test slot, so that the sealing box moves below the liquid level in the first test slot, and the liquid in the first test slot is observed to detect whether the sealing box leaks, thereby preventing the sealing box from flowing with the outside air, avoiding the outside air from affecting the test result of the gas relay, making it less likely for the test result of the gas relay to have errors, and improving the accuracy of the sealing test of the gas relay.

[0018] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure according to an embodiment of the utility model is shown;

[0021] Figure 2 A schematic diagram of the internal structure of a test box according to an embodiment of the utility model is shown;

[0022] Figure 3 A schematic diagram of the internal structure of a sealed box according to an embodiment of the utility model is shown.

[0023] In the figure: 110, test box; 120, first test slot; 130, partition; 140, second test slot; 150, introduction pipe; 160, intake pipe; 170, exhaust pipe; 180, first bellows; 210, sealing box; 220, sealing cover; 230, second bellows; 240, connecting pipe; 250, third bellows; 260, connecting head; 310, moving slot; 320, threaded rod; 330, guide rod; 340, motor; 350, moving block. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-3 The utility model provides a technical solution: a sealing test device for a gas relay. It includes a test box 110, on which a first test slot 120 and a second test slot 140 are provided, a partition 130 is installed in the test box 110, the partition 130 is located between the first test slot 120 and the second test slot 140, an introduction tube 150 is installed on the partition 130, one end of the introduction tube 150 extends to the bottom of the second test slot 140, a test assembly for performing a sealing test on a gas relay is installed in the first test slot 120, and a lifting assembly for driving the test assembly to move vertically is installed in the first test slot 120;

[0026] The test assembly includes a sealed box 210, a sealed cover 220 is sealedly mounted on the sealed box 210, a second bellows 230 is mounted on one outer wall of the sealed box 210, one end of the second bellows 230 away from the sealed box 210 is mounted on the partition 130, and the second bellows 230 is connected to the introduction pipe 150. Connecting pipes 240 are mounted on the inner walls of both ends of the sealed box 210, one end of two groups of the connecting pipes 240 are mounted with a third bellows 250, and one end of two groups of the third bellows 250 away from the connecting pipes 240 are mounted with a connector 260.

[0027] When in use, the gas relay is placed in the sealing box 210, and the two sets of connectors 260 are sealed and connected to the two ends of the gas relay, so that the gas relay is connected to the inlet pipe 160 and the exhaust pipe 170, and then the sealing cover 220 is sealed and installed on the sealing box 210 to seal the sealing box 210, and the threaded rod 320 is driven by the motor 340 to rotate, so that the threaded rod 320 drives the moving block 350 to move vertically, so that the moving block 350 moves below the liquid level in the first test slot 120, and the liquid in the first test slot 120 is pumped into the first test slot 120. The gas is then transported into the gas relay through the air inlet pipe 160, and then the liquid level in the second test tank 140 is checked; when the gas relay leaks, the gas in the gas relay will flow into the sealing box 210, and be transmitted to the liquid in the second test tank 140 through the second bellows 230 and the inlet pipe 150, so that gas will come out of the liquid in the second test tank 140, thereby realizing the sealing test of the gas relay; when the gas relay does not leak, no gas will come out of the liquid in the second test tank 140.

[0028] An air inlet pipe 160 and an exhaust pipe 170 are respectively installed on the outer walls of both sides of the test box 110, and a first bellows 180 are installed on the inner walls of both sides of the first test slot 120. One end of two groups of the first bellows 180 are respectively connected to the air inlet pipe 160 and the exhaust pipe 170. The external gas is transmitted to the gas relay through the air inlet pipe 160 and passes through the exhaust pipe 170. When the gas passes through the gas relay, a sealing test is performed on the gas relay, thereby testing whether the sealing of the gas relay is good.

[0029] The other ends of the two groups of the first bellows 180 are respectively mounted on the outer walls of both ends of the sealing box 210, and the other ends of the two groups of the first bellows 180 are respectively connected to the two groups of connecting pipes 240. Through the first bellows 180, the sealing box 210 is moved without affecting the connection between the air inlet pipe 160, the exhaust pipe 170 and the gas relay, thereby ensuring the stability of the gas relay sealing test.

[0030] The lifting assembly includes a threaded rod 320. Three groups of moving grooves 310 are provided on the inner wall of the test box 110 away from the partition 130. The threaded rod 320 is rotatably connected in one group of the moving grooves 310. Guide rods 330 are installed in the other two groups of the moving grooves 310. The two groups of guide rods 330 are symmetrically arranged with the threaded rod 320 as the center. A motor 340 is installed on the top of the test box 110. The output end of the motor 340 passes through one group of the moving grooves 310, and the output end of the motor 340 is transmission-connected to one end of the threaded rod 320. The lifting assembly also includes three groups of moving blocks 350. The three groups of moving blocks 350 are all installed on the outer wall of the sealing box 210 away from the second bellows 230. One group of the moving blocks 350 is threadedly connected to the threaded rod 320, and the other two groups of the moving blocks 350 are slidably connected to the two groups of guide rods 330. The sealing box 210 is moved to below the liquid level in the first test slot 120 by the motor 340, and the liquid in the first test slot 120 is observed to detect whether the sealing box 210 is leaking, thereby preventing the sealing box 210 from flowing with the outside air, avoiding the outside air from affecting the test result of the gas relay, making the test result of the gas relay less prone to errors, and improving the accuracy of the gas relay sealing test.

[0031] Specifically, the internal electrical connection structure of the motor 340 is well known to those skilled in the art and will not be described in detail herein. The electrical components in this application are all connected to an external power source when in use.

[0032] The circuits, electrical components and modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by this utility model does not involve improvements to the software.

[0033] The control method of the present application document is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field, which is common knowledge in this field. In addition, the present application document is mainly used to protect mechanical devices, so the present application document will no longer explain the control method and circuit connection in detail.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sealing test device for a gas relay, characterized in that: The test box (110) comprises a test box (110), wherein a first test slot (120) and a second test slot (140) are provided on the test box (110), wherein a partition (130) is installed in the test box (110), wherein the partition (130) is located between the first test slot (120) and the second test slot (140), wherein an introduction pipe (150) is installed on the partition (130), wherein one end of the introduction pipe (150) extends to the bottom of the second test slot (140), wherein a test assembly for performing a sealing test on a gas relay is installed in the first test slot (120), and wherein a lifting assembly for driving the test assembly to move vertically is installed in the first test slot (120); The test assembly comprises a sealed box (210), a sealed cover (220) is sealedly mounted on the sealed box (210), a second bellows (230) is mounted on an outer wall of one side of the sealed box (210), an end of the second bellows (230) away from the sealed box (210) is mounted on a partition (130), and the second bellows (230) is connected to an inlet pipe (150).

2. A sealing test device for a gas relay according to claim 1, characterized in that: Connecting pipes (240) are installed on the inner walls at both ends of the sealing box (210), third bellows (250) are installed on one end of the two groups of connecting pipes (240), and connectors (260) are installed on one end of the two groups of third bellows (250) away from the connecting pipes (240).

3. A sealing test device for a gas relay according to claim 2, characterized in that: An air intake pipe (160) and an exhaust pipe (170) are respectively installed on the outer walls on both sides of the test box (110), and a first corrugated pipe (180) is installed on the inner walls on both sides of the first test slot (120), and one end of two groups of the first corrugated pipes (180) are respectively connected to the air intake pipe (160) and the exhaust pipe (170).

4. A sealing test device for a gas relay according to claim 3, characterized in that: The other ends of the two groups of the first bellows (180) are respectively mounted on the outer walls at both ends of the sealing box (210), and the other ends of the two groups of the first bellows (180) are respectively connected to the two groups of connecting pipes (240).

5. A sealing test device for a gas relay according to claim 4, characterized in that: The lifting assembly comprises a threaded rod (320); three groups of movable grooves (310) are provided on an inner wall of a side of the test box (110) away from the partition (130); a threaded rod (320) is rotatably connected in one group of the movable grooves (310); guide rods (330) are installed in the other two groups of the movable grooves (310); and the two groups of guide rods (330) are symmetrically arranged with the threaded rod (320) as the center.

6. A sealing test device for a gas relay according to claim 5, characterized in that: A motor (340) is installed on the top of the test box (110), the output end of the motor (340) penetrates into one of the groups of movable grooves (310), and the output end of the motor (340) is transmission-connected to one end of the threaded rod (320).

7. A sealing test device for a gas relay according to claim 6, characterized in that: The lifting assembly further comprises three groups of moving blocks (350), all of which are mounted on the outer wall of the sealing box (210) on a side away from the second bellows (230), one group of the moving blocks (350) being threadedly connected to the threaded rod (320), and the other two groups of the moving blocks (350) being slidably connected to the two groups of guide rods (330).

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