CN115718053B - Particle discharge experiment platform foreign matter release device and GIL test system - Google Patents

Abstract

The invention provides a particle discharge experimental platform foreign matter release device and a GIL test system, including a GIL device, an opening and closing device and an electromagnetic part, the opening and closing device is arranged on the inner top of the GIL device, and the electromagnetic part is arranged on the outer top of the GIL device , and the electromagnetic part is located above the opening and closing device, so that the opening and closing device releases metal particles through the electromagnetic part, the external power supply of the electromagnetic part is electrically connected, and the electromagnetic part is connected with the signal of the remote control device. The rotating plate and the rotating shaft are rotationally connected between the first rotating plate and the second rotating plate, wherein the first rotating plate is connected to the top of the inner wall of the pressure-resistant cylindrical cavity, and the metal particles are used to place the The second rotating plate solves the problem that when the existing GIL device is working, it is difficult to see the running state of the particles near the pot and post insulators, which in turn causes the problem of reduced insulation performance and safety and stability of the GIL system.

Description

A particle discharge experimental platform foreign matter release device and GIL test system

technical field

The invention belongs to the technical field of high-voltage transmission lines and insulation, and in particular relates to a particle discharge experimental platform foreign matter release device and a GIL test system.

Background technique

Gas-insulated metal-enclosed transmission line is a high-voltage, high-current, long-distance power transmission equipment with a coaxial arrangement of the shell and the conductor. The cavity often uses high-pressure SF6, CF4, N2 or mixed clean gas as the insulating medium. It can be used as a supplement for overhead power transmission and cable power transmission. It is widely used because of its advantages of large transmission capacity, low loss, no electromagnetic interference, and high reliability.

In the current practical application of GIL, there are still some problems that need to be solved urgently. Among them, the reduction of GIL dielectric strength caused by particulate foreign matter is the main factor affecting the safe and stable operation of the system. During the production, transportation, assembly and operation of GIL, particulate foreign matter will inevitably be generated due to imperfect cleaning equipment, extrusion or friction of equipment; at the same time, spark discharge that may exist during long-term operation will further ablate GIL components may also produce some particulate foreign matter. According to relevant information, it is known that these metal particle materials are mainly aluminum, iron and stainless steel, mostly in the shape of linear, spherical and powder, and the size is generally small, mostly millimeter-scale.

At present, in the GIL, the high voltage applied by the external device will cause the particles to be charged and move under the action of the electric field, thus affecting the safe and stable operation of the system. When the existing GIL device is working, the metal particles are placed in one position, which not only makes it difficult to see the operating state of the particles near the pot and post insulators, but also affects the research on the insulation performance and safety and stability of the GIL system.

Contents of the invention

Therefore, the technical problem to be solved by the present invention is to provide a foreign matter release device and a GIL test system for a particle discharge experiment platform, which can solve the problem that when the existing GIL device is working, the metal particles are placed in one position, which is not only difficult to see To the operating state of particles near the pot and post insulators, and affect the research on the insulation performance and safety and stability of the GIL system.

In order to solve the above problems, the present invention provides a particle discharge experimental platform foreign body release device, including GIL device, opening and closing device and electromagnetic parts;

The opening and closing device is arranged on the inner top of the GIL device, and the electromagnetic part is arranged on the outer top of the GIL device, and the electromagnetic part is located above the opening and closing device, so that the opening and closing device releases metal particles through the electromagnetic part, and the external power supply of the electromagnetic part is electrically connected , the electromagnetic part is connected with the remote control device signal.

Optionally, the opening and closing device includes a first rotating plate, a second rotating plate and a rotating shaft, and the first rotating plate and the second rotating plate are rotationally connected through the rotating shaft, wherein the first rotating plate is connected to the The top of the inner wall of the cavity is connected, and the metal particles are used to be placed on the second rotating plate.

Optionally, the GIL device includes a casing, a conductive structure and a gas device, the conductive structure is arranged in the casing, and one end of the conductive structure protrudes from the outside of the casing for connecting a voltage, and the gas device is arranged at the outer upper end of the casing for setting The air pressure inside the enclosure.

Optionally, the housing includes a pressure-resistant cylindrical cavity and an insulating cover plate. Both ends of the pressure-resistant cylindrical cavity are provided with insulating cover plates. The conductive structure is arranged in the inner cavity of the pressure-resistant cylindrical cavity, and the conductive structure One end protrudes from the outer side of one side of the insulating cover for connecting voltage.

Optionally, the conductive structure includes a conductive rod structure and an insulating structure, the conductive rod structure is arranged in the inner cavity of the pressure-resistant cylindrical cavity, and one end of the conductive rod structure extends out of the inner cavity of the pressure-resistant cylindrical cavity, and the conductive structure One end located outside the pressure-resistant cylindrical cavity is connected to the insulating structure.

Optionally, the conductive rod structure includes a guide rod body and a guide rod head, the insulating structure includes an epoxy sleeve and an acrylic sleeve, and the guide rod body includes a first section and a second section, wherein the second section of the guide rod main body is set In the pressure-resistant cylindrical cavity, the first section of the guide rod body passes through the insulating cover plate, and the first section is arranged outside the pressure-resistant cylindrical cavity. One end of the first section is connected to the guide rod head, and the guide rod body An epoxy sleeve is provided on the first section of the epoxy sleeve, and an acrylic sleeve is provided on the outer surface of the epoxy sleeve, wherein the epoxy sleeve is connected with the insulating cover plate through which the main body of the guide rod passes.

Optionally, the inner cavity of the pressure-resistant cylindrical cavity is provided with a conductive film.

Optionally, the gas device includes an inflation valve and an air pressure gauge, the inflation valve is connected to the pressure-resistant cylindrical cavity, and the inflation valve is connected to the inner cavity of the pressure-resistant cylindrical cavity, and the air pressure gauge is arranged on the inflation valve .

Optionally, the release device further includes an insulator, the insulator is located in the inner cavity of the pressure-resistant cylindrical cavity, the insulator is sleeved on the outer surface of the main body of the guide rod, and the insulator is connected to the inner wall of the pressure-resistant cylindrical cavity.

Another aspect of the present invention provides a GIL test system, including the above-mentioned particle discharge test platform foreign matter release device.

Beneficial effect

In the embodiment of the present invention, a particle discharge experiment platform foreign matter release device and a GIL test system are provided. The entire test process is carried out in a closed pressure-resistant cylindrical cavity, and the electrodes are coaxial cylindrical electrodes. , in the pressure-resistant cylindrical cavity, the main body of the guide rod is supported by insulation and on the inner wall of the pressure-resistant cylindrical cavity, and the metal cover plate at the other end (right end) is connected to the pressure-resistant cylindrical cavity as a ground electrode, and then Simulate the conductive characteristics of the metal shell of GIL and GIS busbars. Due to the current research on the movement of metal particles and foreign objects, the discharge of particles inside the pressure-resistant cylindrical cavity is to fix the particles to a certain position or pre-place the particles, and then the main body of the guide rod Pressurization is applied to study the movement of metallic particulate foreign bodies. But the actual situation is under voltage operating conditions, some random factors such as vibration, etc., make the release device produce foreign objects at certain positions under operating conditions, and then the foreign objects start to move. This release device can withstand a certain degree of high air pressure while ensuring good airtightness of the experimental pressure-resistant cylindrical cavity. One end of the metal electromagnetic opening and closing device is fixed on the pressure-resistant cylindrical cavity, and the particles are placed In the metal electromagnetic opening and closing device, a small electromagnet is used to attract the other end of the metal electromagnetic opening and closing device, and the opening and closing are controlled by an external remote control device, so that the other end of the metal electromagnetic opening and closing device is opened, and the metal foreign object is opened instantly. The particles will fall naturally, and then simulate the moment when GIL or GIS equipment produces particles and foreign objects. It is convenient for experimenters to better observe the impact of particles and foreign matter on GIL or GIS equipment. When the existing GIL device is working, the metal particles are placed in one position, and it is not easy to see the particles in the pot and post insulators. Nearby operating conditions, and affect the research on the insulation performance and safety and stability performance of the GIL system.

Advantages of the present invention:

1. The foreign body release device is equipped with a small electromagnetic opening and closing device, which has a simple structure and is easy to install. It can be applied to GIL models of different scales, and through the opening and closing device, metal particles can be released at different positions to improve the protection against Research on insulation and safety and stability of GIL system.

2. The electromagnetic opening and closing device simulates the state process of metal particles falling from the cavity, corresponding to the important process of the generation and fall of metal particles when the GIL is running, so that the device simulates the metal particles from production to the end of the final movement The whole process is convenient to observe the release at different positions, reducing the difficulty of research on the GIL system.

3. The electromagnetic opening and closing device can change the installation position at will, and can simulate the different motion states and motion results of metal particles at different distances from the insulator and different heights from the bottom of the cavity. It is not only convenient to observe the release at different positions, but also easy to use. Simple structure.

Description of drawings

Fig. 1 is a schematic cross-sectional structural schematic diagram of the front view of the foreign matter release device of the particle discharge experimental platform according to the embodiment of the present invention;

Fig. 2 is a schematic structural view of the open state of the opening and closing device according to the embodiment of the present invention;

3 is a schematic structural view of the closed state of the opening and closing device according to the embodiment of the present invention;

Fig. 4 is the flowchart of the working method of the embodiment of the present invention;

Fig. 5 is a schematic top view of the foreign matter release device of the particle discharge experimental platform according to the embodiment of the present invention.

The reference signs are indicated as:

1. Pressure-resistant cylindrical cavity; 2. Insulation cover plate; 3. Guide rod body; 4. Guide rod head; 5. Epoxy sleeve; 6. Acrylic sleeve; 7. Gas device; 70. Inflatable valve ; 71, barometer; 8, opening and closing device; 80, first rotating plate; 81, second rotating plate; 82, rotating shaft; 9, electromagnetic part; 10, insulator.

Detailed ways

Referring to Fig. 1 to Fig. 5, according to an embodiment of the present invention, a particle discharge experimental platform foreign matter release device, please refer to Fig. 1, the release device includes a GIL device, an opening and closing device 8 and an electromagnetic part 9, The GIL device includes a shell, a conductive structure, a gas device 7, and an insulator 10. The shell includes a pressure-resistant cylindrical cavity 1 and an insulating cover plate 2. The conductive rod structure includes a guide rod body 3 and a guide rod head 4. The insulating structure includes epoxy Sleeve 5 acrylic sleeve 6, gas device 7 includes inflation valve 70 and air pressure gauge 71, both ends of pressure-resistant cylindrical cavity 1 are provided with insulating cover plate 2, guide rod body 3 includes first section and second section section, wherein the second section of the guide rod body 3 is set in the pressure-resistant cylindrical cavity 1, the first section of the guide rod body 3 passes through the insulating cover plate 2, and the first section is set in the pressure-resistant cylindrical cavity On the outer side of the body 1, one end of the first section is connected to the guide rod head 4, and the first section of the guide rod main body 3 is provided with an epoxy sleeve 5, and an acrylic sleeve 6 is provided on the outer surface of the epoxy sleeve 5, wherein the ring The oxygen sleeve 5 is connected to the insulating cover plate 2 through which the guide rod main body 3 passes, the gas device 7 is arranged on the pressure-resistant cylindrical cavity 1, and the opening and closing device 8 is arranged inside the pressure-resistant cylindrical cavity 1 At the top of the wall, the electromagnetic part 9 is arranged on the outer top of the pressure-resistant cylindrical cavity 1, and the electromagnetic part 9 is located above the opening and closing device 8, so that the opening and closing device 8 releases metal particles through the energization and de-energization of the electromagnetic part 9, The electromagnet 9 is electrically connected with an external power source and powered independently. The guide rod head 4 is electrically connected with an external adjustable high-voltage power supply, and the electromagnetic part 9 is connected with the signal of the remote control device. In the present invention, the guide rod main body 3 provided in the inner cavity of the pressure-resistant cylindrical cavity 1 forms the wire characteristics of the GIL, by placing metal particles on the opening and closing device 8, and connecting the adjustable voltage power supply through the guide rod head 4, and then The main body of the guide rod 3 is connected, the electromagnetic part 9 is energized, and then the metal particles are adsorbed. When the electromagnetic part 9 is powered off, the falling of the metal particles is controlled to simulate the instantaneous movement of the metal particles generated by the GIL, which is not only convenient for observing the impact of the metal particles on the GIL equipment. At the same time, metal particles can be released at different positions, thereby reducing the difficulty of research on the GIL system, avoiding the movement of metal particles causing weak insulation of the insulator, effectively inhibiting the operation of metal particles, and improving the safe and stable operation of GIL performance.

Further, the pressure-resistant cylindrical cavity 1 is a hermetic pressure-resistant cavity, wherein the two ends are sealed by the insulating cover plate 2, and the insulating cover plate 2 is provided with a groove, and a sealing strip is arranged in the groove, The tightness between the insulating cover plate 2 and the pressure-resistant cylindrical cavity 1 is increased.

Further, the insulating cover plate 2 and the pressure-resistant cylindrical cavity 1 are connected by screws, which is convenient for connection and disassembly.

Further, the first section of the guide rod body 3 is located outside the pressure-resistant cylindrical cavity 1, and the end of the first section away from the insulating cover 2 is threaded to the guide rod head 4, and the guide rod head 4 is adjustable The high-voltage power supply provides voltage for the main body 3 of the guide rod. Among them, the epoxy sleeve 5 is threaded on the first section, and the outer surface of the epoxy sleeve 5 is threaded to connect the acrylic sleeve 6. The function of the epoxy sleeve 5 is to ensure that the guide rod main body 3 will not move toward the insulating cover at the left end. Creepage on board 2 to ensure safety.

Further, the insulator 10 is located in the inner cavity of the pressure-resistant cylindrical cavity 1, the insulator 10 is sleeved on the outer surface of the guide rod body 3, and the insulator 10 is connected to the inner side wall of the pressure-resistant cylindrical cavity 1, the insulator 10 It is a basin-type insulator 10 , that is, it is sleeved on the main body 3 of the guide rod to support the main body 3 of the guide rod.

Further, a conductive film is attached to the pressure-resistant cylindrical cavity 1, so that the inside of the pressure-resistant cylindrical cavity 1 is an actual GIL cavity, which improves the accuracy of the test.

Further, the guide rod body 3 is a high-voltage guide rod body, the guide rod head 4 is a high-voltage guide rod head, and the guide rod head 4 is connected to an adjustable high-voltage power supply. Among them, the voltage types that can be passed are: DC, AC, and impulse voltage. The adjustable voltage power supply controls the size of the voltage.

Further, the opening and closing device 8 is fixed in the inner cavity of the pressure-resistant cylindrical cavity 1, and the electromagnetic element 9 is fixed on the outside of the pressure-resistant cylindrical cavity 1, and is located above the opening and closing device 8. Part 9 controls the opening and closing of the opening and closing device 8. When the electromagnetic part 9 is energized, that is, when it is magnetic, that is, the opening and closing device 8 is in a closed state. When the electromagnetic part 9 is powered off, it is demagnetized, that is, the opening and closing device 8 It is an open state, that is, the metal particles on the opening and closing device 8 fall freely, so that the movement state of the metal particles can be observed, and it is convenient to study the influence of the metal particles on the GIL.

2 and 3, the opening and closing device 8 includes a first rotating plate 80, a second rotating plate 81 and a rotating shaft 82, the first rotating plate 80 and the second rotating plate 81 are rotationally connected by the rotating shaft 82, wherein , the first rotating plate 80 is connected to the top of the inner wall of the pressure-resistant cylindrical cavity 1, the metal particles are placed on the second rotating plate 81, and the electromagnet 9 is located above the first rotating plate 80 and the rotating shaft 80, the second A rotating plate 80 is fixed, and the second rotating plate 81 rotates along the rotating shaft 82 to realize the release of metal particles. The structure is simple and easy to operate. It is controlled by the electromagnetic part 9 and is convenient for releasing at different positions. That is, the opening and closing device 8 is fixedly connected to the pressure-resistant cylindrical cavity 1 according to a preset position, and the electromagnetic part 9 is placed at a position corresponding to the opening and closing device 8 .

Further, the electromagnetic part 9 is connected with the remote control device signal, and the power switch of the electromagnetic part 9 is controlled by the remote control device, which can remotely control whether the electromagnetic part 9 is energized. When the power is turned on, the electromagnetic will be generated, and the electromagnetic will disappear when the power is turned off, thereby controlling the opening and closing device 8 The opening and closing of the test device avoids the danger of close contact with the test device.

Further, the specific shape of the first rotating plate 80 and the second rotating plate 81 is a square rotating plate, and the first rotating plate 80 and the second rotating plate 81 are flexibly connected, that is, connected by a rotating shaft 82, please refer to FIG. 2 , the second rotating plate 81 moves relative to the first rotating plate 80 along the rotating shaft 82, when the electromagnetic part 9 is powered off, that is, the electromagnetic part 9 disappears electromagnetically, and the second rotating plate 81 rotates downward along the rotating shaft 82 by gravity , that is, to release the metal particles placed on the second rotating plate 81 .

Further, the first rotating plate 80 is connected to the inner side wall of the pressure-resistant cylindrical cavity 1 by screws, which is not only convenient for disassembly and installation, but also can change the release position according to the requirements of the test conditions, so that observation can be carried out in different positions. release, reducing the difficulty of research on the GIL system.

Further, the release position where the first rotating plate 80 is located, that is, the electromagnet 9 is also located at the releasing position of the first rotating plate 80, because when the electromagnet 9 is magnetic, please refer to FIG. 3 , the first rotating plate 80 and the second rotating plate The two rotating plates 81 are attracted together. It is convenient to simulate the situation when the metal particle foreign matter is generated, and the metal particle foreign matter can be placed in multiples or in different positions according to the experimental requirements.

Furthermore, the metal fine particles are non-magnetic metal fine particles.

As another embodiment, the opening and closing device 8 also includes a first rotating plate 80, a second rotating plate 81, a first fixing member, a second fixing member and an elastic member, and the first fixing member is fixedly installed on the first rotating plate 80. Above, the second fixing piece is fixedly installed on the second rotating plate 81, and one end of the elastic piece is connected to the first fixing piece, and the other end of the elastic piece is connected to the second fixing piece, that is, the second rotating plate 81 is under the action of the elastic piece That is to realize the opening and closing, and at the same time, the second rotating plate 81 and the first rotating plate 80 are attracted to each other through the electrification of the electromagnet 9 .

Further, the elastic member is a spring.

The gas device 7 includes an inflation valve 70 and a barometer 71, the inflation valve 70 is connected with the pressure-resistant cylindrical cavity 1, and the inflation valve 70 is communicated with the inner chamber of the pressure-resistant cylindrical cavity 1, and the barometer 71 is set On the inflation valve 70. Through the inflation valve 70, it is not only convenient to discharge the air inside the pressure-resistant cylindrical cavity 1, but also to fill the interior of the pressure-resistant cylindrical cavity 1 with insulating gas. When the inflation valve 70 is opened and connected to the insulating gas tank, the The inside of the pressure-resistant cylindrical cavity 1 is filled with insulating gas, and when the charging valve 70 is opened, the internal air is discharged to the outside through the charging valve 70, which is convenient for use and operation.

Further, the models of the inflation valve 70 and the air pressure gauge 71 are selected according to actual use. The inflation valve 70 and the air gauge 71 are connected through threads, and the inflation valve 70 communicates with the pressure-resistant cylindrical cavity 1 through threads. Through the gas filling valve 70, an external device can be connected to vacuumize and charge and discharge insulating gas according to the needs of the experiment. Wherein, the indication of air pressure can be observed in real time through the barometer 71 .

The entire test process of the present invention is carried out in a closed pressure-resistant cylindrical cavity 1. In the pressure-resistant cylindrical cavity 1, the guide rod main body 3 is supported by an insulator 10 and is on the inner wall of the pressure-resistant cylindrical cavity 1. , the guide rod head 4 is used as an electrode, and the pressure-resistant cylindrical cavity 1 is connected as the ground electrode, and then the conductive characteristics of the metal shell of the GIL and GIS bus are simulated. Due to the current research on the movement of metal particles and foreign objects, the pressure-resistant cylindrical cavity 1 The internal particle discharge is to fix the particles to a certain position or put the particles in advance, and then pressurize the main body 3 of the guide rod, so as to study the movement of the metal particles and foreign objects. But the actual situation is under voltage operating conditions, some random factors such as vibration, etc., make the release device produce foreign objects at certain positions under operating conditions, and then the foreign objects start to move. This release device can withstand a certain degree of high air pressure while ensuring the good airtightness of the experimental pressure-resistant cylindrical cavity 1. One end of the metal electromagnetic opening and closing device 8 is fixed on the pressure-resistant cylindrical cavity 1. Particles are placed in the metal electromagnetic opening and closing device 8, and the other end of the metal electromagnetic opening and closing device 8 is sucked up by a small electromagnetic part 9, and the opening and closing of the metal electromagnetic opening and closing device 8 are controlled by an external remote control device, so that the metal electromagnetic opening and closing device 8 is another One end is opened, and the metal foreign matter particles will fall naturally at the moment of opening, thereby simulating the moment when GIL or GIS equipment produces particles and foreign matter. It is convenient for experimenters to better observe the impact of particles and foreign matter on GIL or GIS equipment, and solve the problem that when the existing GIL device is working, it is difficult to see the operating state of particles near the basin and post insulators, which will cause GIL system insulation Issues with degraded performance and security stability.

Another aspect of the present invention provides a GIL test system, including the above-mentioned foreign matter release device of the particle discharge test platform.

A kind of working method of the foreign matter release device of the particle discharge experimental platform, please refer to Fig. 4, the working method of the release device includes the following steps:

1. Check whether the parts of the release device and the opening and closing device 8 are in good condition, assemble the release device, after assembly, check whether the airtightness and electrical conductivity of the pressure-resistant cylindrical cavity 1 meet the experimental conditions, and install the opening and closing device 8 is fixed to the inner cavity of the pressure-resistant cylindrical cavity 1, and is located at the position required by the test conditions;

Further, check whether each component in the release device is intact and available, and test the opening and closing device 8 to see if it can release metal particles sensitively. At the same time, the pressure-resistant cylindrical cavity 1 is assembled, and the first One section passes through one of the metal cover plates 2, and then the metal cover plate 2 is connected to one end of the pressure-resistant cylindrical cavity 1, and the epoxy sleeve 5 is placed on the first section, and the epoxy sleeve 5 is fixedly connected to the outer side wall of the metal cover 2, and the outer end of the epoxy sleeve 5 is sleeved with an acrylic sleeve 6, and the end of the first section away from the metal cover 2 is screwed to the guide rod head 4. Put the insulator on the second section, and fixedly connect the insulator to the side wall of the pressure-resistant cylindrical cavity 1, install the opening and closing device that is easy to use in the test on the upper end of the inner side wall of the pressure-resistant cylindrical cavity 1, and at the same time The electromagnetic part 9 is installed on the outer wall of the pressure-resistant cylindrical cavity 1 and is located at the upper end of the opening and closing device 8 , and the other metal cover plate 2 is connected with the other end of the pressure-resistant cylindrical cavity 1 for sealing.

2. Based on meeting the experimental conditions, the vacuum pump will be connected with the inflation valve 70, and the air in the pressure-resistant cylindrical cavity 1 of the vacuum pump release device will be drawn out, and the air pressure gauge 71 will be observed. When the gauge pressure of the air pressure gauge 71 is -0.1MPa , close the inflation valve 70, and stop pumping, connect the pipe of the insulating gas tank to the inflation valve 70, fill the insulating gas into the pressure-resistant cylindrical cavity 1, and close the inflation valve 70 after reaching the required pressure for the test. , stand still, so that the insulating gas is evenly distributed in the pressure-resistant cylindrical cavity 1;

Further, after the assembly based on the first step, the opening and closing device 8 is placed in a position satisfying the experimental conditions, communicated with the inflation valve 70 through an external vacuum pump, and the air in the pressure-resistant cylindrical cavity 1 is drawn out, and then released to the inside Rush into the insulating gas to provide a test environment for the test.

3. Turn off the power supply of the electromagnetic part 9 through the remote control device. When the electromagnetic part 9 is demagnetized, the second rotating plate 81 in the opening and closing device 8 takes the rotating shaft 82 as the center of rotation, and the second rotating plate 81 is opened to release the metal particles to the test chamber. Location;

Further, the experimental location is selected and placed according to the experimental requirements, and is selected according to the actual situation.

4. Connect the adjustable high-voltage power supply to the guide rod head 4, slowly increase the voltage, observe the test state of the metal particles, and record the test data.

Further, when the voltage is slowly increased, observe whether the metal particles take off, the state of motion after the take-off, and the position of attachment, and record the take-off voltage.

5. Reduce the power supply voltage until it is 0, and then discharge the release device to complete the test.

Further, discharge is performed to improve safety and avoid danger.

The whole working method can ensure the good operation of the test device, and completely simulate the production process, movement and process of metal particles during the experiment. The working method is simple and convenient to achieve the desired results of the test, and can guarantee the maximum Safety of test personnel.

1. The foreign body release device is equipped with a small electromagnetic opening and closing device, which has a simple structure and is easy to install. It can be applied to GIL models of different scales, and through the opening and closing device, metal particles can be released at different positions to improve the protection against Research on insulation and safety and stability of GIL system.

2. The electromagnetic opening and closing device simulates the state process of metal particles falling from the cavity, corresponding to the important process of the generation and fall of metal particles when the GIL is running, so that the device simulates the metal particles from production to the end of the final movement The whole process is convenient to observe the release at different positions, reducing the difficulty of research on the GIL system.

3. The electromagnetic opening and closing device can change the installation position at will, and can simulate the different motion states and motion results of metal particles at different distances from the insulator and different heights from the bottom of the cavity. It is not only convenient to observe the release at different positions, but also easy to use. Simple structure.

4. An epoxy sleeve with a thickness of 5mm is set between the main body of the guide rod and the left cover plate, which can effectively prevent the high-voltage guide rod from creeping upward along the cover plate.

5. The main body of the guide rod and the head of the guide rod are connected by thread. When wiring, the wire is screwed on the thread and clamped by the main body of the guide rod and the head of the guide rod. Compared with other methods, this connection method is more compact and safe.

Those skilled in the art can easily understand that, on the premise of no conflict, the above-mentioned advantageous modes can be freely combined and superimposed.

Claims (9)

1. A foreign matter release device for a particle discharge experimental platform, characterized in that it includes a GIL device, an opening and closing device (8) and an electromagnetic part (9); The opening and closing device (8) is arranged on the inner top of the GIL device, the electromagnetic part (9) is arranged on the outer top of the GIL device, and the electromagnetic part (9) is located above the opening and closing device (8), so that the opening and closing device (8 ) Release the metal particles through the electromagnetic part (9), the electromagnetic part (9) is electrically connected to the external power supply, and the electromagnetic part (9) is connected to the signal of the remote control device; The opening and closing device (8) includes a first rotating plate (80), a second rotating plate (81) and a rotating shaft (82), and the rotating shaft ( 82) Rotational connection, wherein the first rotating plate (80) is connected to the top of the inner wall of the pressure-resistant cylindrical cavity (1) by screws, and the release position can be replaced, and the metal particles are used to be placed on the second rotating plate (81) on. 2. The particle discharge experimental platform foreign matter release device according to claim 1, characterized in that the GIL device includes a casing, a conductive structure and a gas device (7), the conductive structure is arranged in the casing, and one end of the conductive structure protrudes The outer side of the shell is used for connecting the voltage, and the gas device (7) is arranged on the upper end of the outer side of the shell, and is used for setting the air pressure of the inner cavity of the shell. 3. The foreign matter release device of the particle discharge experiment platform according to claim 2, characterized in that the housing includes a pressure-resistant cylindrical cavity (1) and an insulating cover plate (2), and the pressure-resistant cylindrical cavity ( Both ends of 1) are provided with insulating cover plates (2), the conductive structure is set in the inner cavity of the pressure-resistant cylindrical cavity (1), and one end of the conductive structure protrudes from the outer side of the insulating cover plate (2). on the connection voltage. 4. The foreign matter release device of the particle discharge experiment platform according to claim 3, characterized in that the conductive structure includes a conductive rod structure and an insulating structure, and the conductive rod structure is arranged in the inner cavity of the pressure-resistant cylindrical cavity (1) , and one end of the conductive rod structure extends out of the inner cavity of the pressure-resistant cylindrical cavity (1), and one end of the conductive rod structure located outside the pressure-resistant cylindrical cavity (1) is connected to the insulating structure. 5. The particle discharge experimental platform foreign matter release device according to claim 4, characterized in that the conductive rod structure includes a guide rod body (3) and a guide rod head (4), and the insulating structure includes an epoxy sleeve (5) and an acrylic sleeve (6), the guide rod body (3) includes a first section and a second section, wherein the second section of the guide rod body (3) is set in a pressure-resistant cylindrical cavity (1), and the guide rod body (3) The first section of the rod body (3) passes through the insulating cover (2), the first section is set outside the pressure-resistant cylindrical cavity (1), one end of the first section is connected to the guide rod head (4), and the guide An epoxy sleeve (5) is provided on the first section of the rod body (3), and an acrylic sleeve (6) is provided on the outer surface of the epoxy sleeve (5), wherein the epoxy sleeve (5) and the guide rod The insulating cover plate (2) through which the main body (3) passes is connected. 6. The foreign matter release device of the particle discharge experiment platform according to claim 3, characterized in that, The inner cavity of the pressure-resistant cylindrical cavity (1) is provided with a conductive film. 7. The foreign matter release device of the particle discharge experiment platform according to claim 2, characterized in that the gas device (7) includes an inflation valve (70) and a barometer (71), the inflation valve (70) and a pressure-resistant cylinder shaped cavity (1), and the inflation valve (70) communicates with the inner cavity of the pressure-resistant cylindrical cavity (1), and the air pressure gauge (71) is arranged on the inflation valve (70). 8. The foreign matter release device of the particle discharge experiment platform according to claim 1, characterized in that the release device also includes an insulator (10), the insulator (10) is located in the inner cavity of the pressure-resistant cylindrical cavity (1), and the insulator (10) is sleeved on the outer surface of the guide rod main body (3), and the insulator (10) is connected to the inner side wall of the pressure-resistant cylindrical cavity (1). 9. A GIL test system, characterized in that it comprises the particle discharge test platform foreign matter release device according to any one of claims 1-8.

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