A GIS device gas pressure compensation system

Abstract

The application discloses a GIS device air pressure compensation system, which comprises a GIS device, a temperature monitoring device, a control device and a pressure adjusting device. The GIS device comprises a device body, the device body comprises a first GIS air chamber, a second GIS air chamber and a bellows, the bellows comprises opposite first and second ends, the first end of the bellows is communicated with the first GIS air chamber, and the second end of the bellows is communicated with the second GIS air chamber. The temperature monitoring device is used for monitoring the external environment temperature of the device body. The input end of the control device is electrically connected with the temperature monitoring device, and the control device is used for outputting an adjusting signal based on the temperature difference between the external environment temperature and a preset standard temperature. The pressure adjusting device is used for controlling the compression or relaxation of the bellows based on the adjusting signal. Through the above scheme, the problem of how to ensure that the actual gas pressure of the GIS device can be maintained within the rated range when the environmental temperature changes sharply and suddenly is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of GIS equipment, and particularly to a GIS equipment gas pressure compensation system. BACKGROUND

[0002] The GIS equipment refers to a gas insulated switchgear, which is composed of a circuit breaker, a disconnector, a grounding switch, a mutual inductor, a surge arrester, a bus, a connecting piece and a terminal, etc. All of these devices or components are enclosed in a metal grounded shell, and a certain pressure of SF6 insulating gas is filled in the shell. The GIS equipment has a high safety factor and is widely used in power systems.

[0003] According to Bernoulli equation, the gas pressure in a closed space is related to the temperature thereof. When other conditions remain unchanged, the pressure is positively related to the temperature. The GIS equipment is filled with SF6 gas with good insulation, and the outer shell is made of steel, which has good heat conduction performance. Therefore, it can be considered that the temperature of the gas in the GIS equipment is consistent with the temperature of the external environment.

[0004] At present, the GIS equipment is divided into indoor and outdoor types. For the outdoor GIS equipment, the temperature of the SF6 gas in the equipment changes in real time with the change of the external environment. When the external environment temperature suddenly rises or suddenly drops, the SF6 gas pressure in the equipment will also greatly rise or drop. The SF6 gas pressure that is too large or too small may reduce the insulation and arc extinguishing performance of the GIS equipment, cause the locking of the internal device, and seriously affect the safe and stable operation of the equipment.

[0005] Therefore, it is necessary to solve the problem of how to ensure that the actual gas pressure of the GIS equipment can be maintained within the rated range when the temperature of the external environment changes dramatically and suddenly. SUMMARY

[0006] The present application provides a GIS equipment gas pressure compensation system to solve the problem of how to ensure that the actual gas pressure of the GIS equipment can be maintained within the rated range when the temperature of the external environment changes dramatically and suddenly.

[0007] According to an aspect of the present application, a GIS equipment gas pressure compensation system is provided, which comprises a GIS equipment, a temperature monitoring device, a control device and a pressure adjusting device.

[0008] The GIS equipment comprises an equipment body, which comprises a first GIS gas chamber, a second GIS gas chamber and a bellows. The bellows comprises opposite first and second ends. The first end of the bellows is in communication with the first GIS gas chamber, and the second end of the bellows is in communication with the second GIS gas chamber.

[0009] The temperature monitoring device is used for monitoring an external environment temperature of the device body;

[0010] An input end of the control device is electrically connected with the temperature monitoring device, and is used for outputting an adjustment signal based on a temperature difference between the external environment temperature and a preset standard temperature;

[0011] An input end of the pressure adjusting device is electrically connected with an output end of the control device, and is used for controlling the bellows to contract or expand based on the adjustment signal.

[0012] In an optional embodiment of the present application, the control device is specifically used for:

[0013] outputting a first adjustment signal when the temperature difference is greater than zero;

[0014] outputting a second adjustment signal when the temperature difference is less than zero;

[0015] the pressure adjusting device is used for controlling the bellows to expand based on the first adjustment signal, and is used for controlling the bellows to contract based on the second adjustment signal.

[0016] In an optional embodiment of the present application, the pressure adjusting device comprises a driving mechanism, the driving mechanism is used for driving the distance between the first end and the second end of the bellows to decrease to make the bellows contract, and is used for driving the distance between the first end and the second end of the bellows to increase to make the bellows expand.

[0017] In an optional embodiment of the present application, the driving mechanism comprises a power member and a driving rod, one end of the driving rod is connected with the power member, and the other end of the driving rod is fixedly connected with the first end and / or the second end of the bellows, the power member is used for driving the driving rod to move in a first direction and a second direction to make the distance between the first end and the second end decrease or increase;

[0018] The first direction is a direction in which the first end faces the second end, and the second direction is a direction in which the second end faces the first end.

[0019] In an optional embodiment of the present application, the power member comprises an electric machine, the electric machine is arranged on an outer wall of the device body, the driving mechanism further comprises a transmission assembly, the transmission assembly is connected between the electric machine and the driving rod, and the transmission assembly is used for converting a rotating torque of the electric machine into a linear motion of the driving rod.

[0020] In an optional embodiment of the present application, the transmission assembly comprises a turbine and a worm, the output shaft of the motor is fixedly connected with the worm, the worm is engaged with the turbine, and the driving rod is provided with tooth marks, the tooth marks on the driving rod being engaged with the turbine.

[0021] In an optional embodiment of the present application, the number of the driving mechanisms is two, the driving rod of one of the driving mechanisms is fixedly connected with the first end of the bellows, and the driving rod of the other of the driving mechanisms is fixedly connected with the second end of the bellows.

[0022] And / or, the first adjusting signal is a forward rotation signal, the motor is used for forward rotation based on the forward rotation signal, the driving rod is used for driving the first end and / or the second end to move in a direction of approaching each other to compress the bellows when the motor is forward rotated, the second adjusting signal is a reverse rotation signal, the motor is used for reverse rotation based on the reverse rotation signal, and the driving rod is used for driving the first end and / or the second end to move in a direction of moving away from each other to relax the bellows when the motor is reverse rotated.

[0023] In an optional embodiment of the present application, the temperature monitoring device comprises a temperature detecting member and a temperature control module.

[0024] The temperature detecting member is arranged on the outer wall of the device body to monitor the external environment temperature of the device body.

[0025] The input end of the temperature control module is electrically connected with the temperature detecting member, and the output end of the temperature control module is electrically connected with the control device, which is used for determining a temperature difference value between the external environment temperature and a preset standard temperature based on the external environment temperature and the preset standard temperature, and sending the temperature difference value to the control device.

[0026] In an optional embodiment of the present application, the temperature detecting member comprises a temperature sensor.

[0027] In an optional embodiment of the present application, the GIS device gas pressure compensation system further comprises at least one of the following:

[0028] A pressure detecting member is arranged to detect the internal gas pressure of the GIS device.

[0029] An adjusting scale is arranged to detect the adjusting change amount of the bellows.

[0030] The technical scheme of the embodiment of the present application can monitor the external environment temperature of the device body through the temperature monitoring device, then the control device outputs an adjusting signal based on the temperature difference between the external environment temperature and the preset standard temperature, and finally the pressure adjusting device controls the compression or relaxation of the bellows based on the adjusting signal. The gas pressure inside the GIS device can be adjusted according to the external environment temperature, so that in the case of a sharp and sudden change in the external environment temperature, the gas pressure inside the GIS device can be adjusted to be within the rated range through the compression or relaxation of the bellows, preventing the security of the GIS device from being damaged. The problem of how to ensure that the actual gas pressure of the GIS device can be maintained within the rated range in the case of a sharp and sudden change in the environment temperature is solved.

[0031] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained from these drawings by those skilled in the art without creative labor.

[0033] Figure 1 is a structural schematic diagram of a GIS device gas pressure compensation system provided by the embodiment of the present application;

[0034] Figure 2 is a structural schematic diagram of a driving mechanism provided by the embodiment of the present application;

[0035] Figure 3 is a circuit schematic diagram of a motor forward rotation provided by the embodiment of the present application;

[0036] Figure 4 is a circuit schematic diagram of a motor reverse rotation provided by the embodiment of the present application;

[0037] Figure 5 is a structural schematic diagram of another GIS device gas pressure compensation system provided by the embodiment of the present application.

[0038] Wherein: 1, GIS device; 11, device body; 111, first GIS gas chamber; 112, second GIS gas chamber; 113, bellows; 1131, first end; 1132, second end; 2, temperature monitoring device; 21, temperature detection piece; 22, temperature control module; 3, control device; 4, driving mechanism; 41, power piece; 411, motor; 42, driving rod; 43, transmission assembly; 431, turbine; 432, worm; 5, tooth mark; 6, pressure detection piece; 7, adjustment scale; 81, positive sequence three-phase alternating current; 91, forward rotation control relay normally open node; 82, negative sequence three-phase alternating current; 92, reverse rotation control relay normally open node. DETAILED DESCRIPTION

[0039] In order to make the personnel in the technical field better understand the present application scheme, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0040] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0041] Figure 1 A structural schematic diagram of a GIS device air pressure compensation system provided by the embodiments of the present application, the present embodiment can be applied to the case that the external environment temperature of the GIS device 1 changes more sharply. As shown in the figure, the GIS device air pressure compensation system includes the GIS device 1, the temperature monitoring device 2, the control device 3 and the pressure adjusting device. Figure 1

[0042] ​The GIS device 1 comprises a device body 11, the device body 11 comprising a first GIS gas chamber 111, a second GIS gas chamber 112 and a bellows 113, the bellows 113 comprising opposite first and second ends 1131 and 1132, the first end 1131 of the bellows 113 being in communication with the first GIS gas chamber 111, and the second end 1132 of the bellows 113 being in communication with the second GIS gas chamber 112. Wherein, the device body 11 refers to the main part of the GIS device 1, the first and second GIS gas chambers 111 and 112 refer to the SF6 gas-filled bearing containers inside the GIS device 1, and the bellows 113 refers to a tubular elastic sensitive element connected by foldable corrugated sheets along the folding and telescoping direction, which is a pipeline connecting the first and second GIS gas chambers 111 and 112. The SF6 gas inside the GIS device 1 is located inside the first and second GIS gas chambers 111 and 112 and the bellows 113.

[0043] The temperature monitoring device 2 is used to monitor the external environment temperature of the device body 11. Wherein, the temperature monitoring device 2 refers to a device capable of monitoring temperature, which can be arranged on the outer wall of the device body 11, so as to conveniently detect the external environment temperature of the device body 11. Specifically, the temperature monitoring device 2 can be arranged on the outer wall of the first or second GIS gas chamber 111 or 112.

[0044] The input end of the control device 3 is electrically connected with the temperature monitoring device 2, for outputting an adjustment signal based on the temperature difference between the external environment temperature and a preset standard temperature. Wherein, the preset standard temperature refers to the standard temperature preset in advance for the operation of the GIS device 1, and the temperature difference between the external environment temperature and the preset standard temperature refers to the value of the external environment temperature minus the preset standard temperature, which reflects the difference between the external environment temperature and the preset standard temperature, and reflects the change of the external environment temperature.

[0045] The input end of the pressure adjusting device is electrically connected with the output end of the control device 3, for controlling the compression or relaxation of the bellows 113 based on the adjusting signal. The pressure adjusting device refers to a device capable of adjusting the pressure inside the GIS device 1. When the bellows 113 is compressed, the volume of the first GIS chamber 111 and the second GIS chamber 112 inside does not change, and at this time, the overall volume of the GIS device 1 becomes smaller. When the bellows 113 is relaxed, the volume of the first GIS chamber 111 and the second GIS chamber 112 inside does not change, and at this time, the overall volume of the GIS device 1 becomes larger. The bellows 113 is made of a steel material with good elasticity, has good elasticity, and can be easily compressed and relaxed, and the volume change is simple. According to Bernoulli equation: PV = nRT (P: gas pressure; V: volume; n: amount of substance; R: constant; T: temperature). For the GIS device 1, when the external environment temperature T rises, the gas pressure P becomes larger. At this time, if the volume V inside the GIS device 1 is made larger, the gas pressure P can become smaller to return to the initial value. When the external environment temperature T drops, the gas pressure P becomes smaller. At this time, if the volume V inside the GIS device 1 is made smaller, the gas pressure P can become larger to return to the initial value. Therefore, the compression and relaxation of the bellows 113 is controlled according to the external environment temperature, and the gas pressure inside the GIS device 1 can be adjusted.

[0046] The above scheme, by setting the temperature monitoring device 2 to monitor the external environment temperature of the device body 11, then the control device 3 outputs the adjusting signal based on the temperature difference between the external environment temperature and the preset standard temperature, and finally the pressure adjusting device controls the compression or relaxation of the bellows 113 based on the adjusting signal. The gas pressure inside the GIS device 1 can be adjusted according to the external environment temperature, so in the case of a sudden change in the external environment temperature, the gas pressure inside the GIS device 1 can be adjusted to be within the rated range by the compression or relaxation of the bellows 113, preventing the safety of the GIS device 1 from being damaged. The problem of how to ensure that the actual gas pressure of the GIS device 1 is within the rated range when the environmental temperature changes dramatically is solved.

[0047] In an optional embodiment of the present application, the control device 3 is specifically used for outputting a first adjusting signal when the temperature difference is greater than zero, and outputting a second adjusting signal when the temperature difference is less than zero. The pressure adjusting device is used for controlling the relaxation of the bellows 113 based on the first adjusting signal, and the pressure adjusting device is used for controlling the compression of the bellows 113 based on the second adjusting signal.

[0048] The first adjusting signal and the second adjusting signal are electrical signals, when the temperature difference is greater than zero, it indicates that the external environment temperature is rising, at this time, the gas pressure is increased, the bellows 113 is controlled to relax, so that the gas pressure of the GIS device 1 is reduced to the initial value. When the temperature difference is less than zero, it indicates that the external environment temperature is falling, at this time, the gas pressure is reduced, the bellows 113 is controlled to compress, so that the gas pressure of the GIS device 1 is increased to the initial value.

[0049] In the optional embodiment of the present application, the pressure adjusting device comprises a driving mechanism 4, the driving mechanism 4 is used to drive the distance between the first end 1131 and the second end 1132 of the bellows 113 to be reduced to compress the bellows 113, and the driving mechanism 4 is used to drive the distance between the first end 1131 and the second end 1132 of the bellows 113 to be increased to relax the bellows 113.

[0050] The first end 1131 and the second end 1132 of the bellows 113 are opposite, when the distance between the first end 1131 and the second end 1132 of the bellows 113 is reduced, it indicates that the first end 1131 and the second end 1132 of the bellows 113 are close, so that the length of the bellows 113 as a whole is reduced, at this time, the bellows 113 is compressed, and the volume inside the bellows 113 is reduced. When the distance between the first end 1131 and the second end 1132 of the bellows 113 is increased, it indicates that the first end 1131 and the second end 1132 of the bellows 113 are far away, so that the length of the bellows 113 as a whole is increased, it indicates that the bellows 113 is stretched, at this time, the bellows 113 is relaxed, and the volume inside the bellows 113 is increased. Therefore, by driving the distance between the first end 1131 and the second end 1132 of the bellows 113 to change, the compression degree and the relaxation degree of the bellows 113 can be conveniently controlled.

[0051] On the basis of the above-mentioned embodiment, the driving mechanism 4 comprises a power member 41 and a driving rod 42, one end of the driving rod 42 is connected with the power member 41, the other end of the driving rod 42 is fixedly connected with the first end 1131 and / or the second end 1132 of the bellows 113, the power member 41 is used to drive the driving rod 42 to move along a first direction and a second direction, so that the distance between the first end 1131 and the second end 1132 is reduced or increased; the first direction is a direction in which the first end 1131 faces the second end 1132, and the second direction is a direction in which the second end 1132 faces the first end 1131.

[0052] The power element 41 refers to a component capable of providing movement power. The driving rod 42 is capable of moving in the first direction and the second direction under the action of the power element 41. When the driving rod 42 is fixedly connected with the first end 1131 of the bellows 113, if the driving rod 42 moves in the first direction, at this time, the first end 1131 is close to the second end 1132, and the distance between the first end 1131 and the second end 1132 is reduced. If the driving rod 42 moves in the second direction, at this time, the first end 1131 is away from the second end 1132, and the distance between the first end 1131 and the second end 1132 is increased. When the driving rod 42 is fixedly connected with the second end 1132 of the bellows 113, if the driving rod 42 moves in the first direction, at this time, the second end 1132 is away from the first end 1131, and the distance between the first end 1131 and the second end 1132 is increased. If the driving rod 42 moves in the second direction, the second end 1132 is close to the first end 1131, and the distance between the first end 1131 and the second end 1132 is reduced. If the number of the driving rods 42 is two, one driving rod 42 is fixedly connected with the first end 1131, and the other driving rod 42 is fixedly connected with the second end 1132. When one driving rod 42 drives the first end 1131 to move in the first direction and the other driving rod 42 drives the second end 1132 to move in the second direction, at this time, the distance between the first end 1131 and the second end 1132 is reduced. When one driving rod 42 drives the first end 1131 to move in the second direction and the other driving rod 42 drives the second end 1132 to move in the first direction, at this time, the distance between the first end 1131 and the second end 1132 is increased. Therefore, according to the different connection relationship between the driving rod 42, the first end 1131 and the second end 1132, the distance between the first end 1131 and the second end 1132 can be changed when the driving rod 42 moves in different directions. The connection relationship between the driving rod 42, the first end 1131 and the second end 1132 can be set according to the user's demand, which is not limited here.

[0053] As shown in the example, Figure 2 The power element 41 includes a motor 411, which is arranged on the outer wall of the device body 11. The driving mechanism 4 further includes a transmission assembly 43 connected between the motor 411 and the driving rod 42. The transmission assembly 43 is used to convert the rotating torque of the motor 411 into the linear motion of the driving rod 42.

[0054] The transmission assembly 43 refers to an assembly capable of converting rotating torque into linear motion. By arranging the transmission assembly 43 between the motor 411 and the driving rod 42, the rotating torque of the motor 411 can be converted into the linear motion of the driving rod 42. Therefore, when the motor 411 operates, it can output rotating torque, and at this time, the driving rod 42 can move linearly to adjust the distance between the first end 1131 and the second end 1132.

[0055] In an optional embodiment of the present application, the first adjustment signal is a forward rotation signal, the motor 411 is configured to rotate forward based on the forward rotation signal, and the driving rod 42 is configured to move the first end 1131 and / or the second end 1132 towards each other when the motor 411 rotates forward, so as to compress the bellows 113; the second adjustment signal is a reverse rotation signal, the motor 411 is configured to rotate reverse based on the reverse rotation signal, and the driving rod 42 is configured to move the first end 1131 and / or the second end 1132 away from each other when the motor 411 rotates reverse, so as to decompress the bellows 113.

[0056] Since the motor 411 can rotate forward and reverse, the rotating torque directions output by the forward rotation and the reverse rotation are different, and thus the movement directions of the driving rod 42 are also different. Specifically, as shown in Figure 3 and Figure 4 The power supply circuit of the motor 411 is divided into a forward rotation motor 411 circuit and a reverse rotation motor 411 circuit. The forward rotation motor 411 circuit is composed of the positive sequence three-phase alternating current 81, the forward rotation control relay normally open node 91 and the motor 411. When the forward rotation control relay is excited, the forward rotation control relay normally open node 91 is turned on, the motor 411 inputs the positive sequence three-phase alternating current 81, and the forward rotation can be realized. The reverse rotation motor 411 circuit is composed of the negative sequence three-phase alternating current 82, the reverse rotation control relay normally open node 92 and the motor 411. When the reverse rotation control relay is excited, the reverse rotation control relay normally open node 92 is turned on, the motor 411 inputs the negative sequence three-phase alternating current 82, and the reverse rotation can be realized. Similarly, when the relevant relays are not excited, the motor 411 circuit is cut off, and the motor 411 stops running.

[0057] The above scheme can make the motor 411 rotate forward and reverse by letting the first adjustment signal and the second adjustment signal be different signals, and thus can make the driving rod 42 move in different directions, so that the first end 1131 and the second end 1132 of the bellows 113 can move towards or away from each other, so that the bellows 113 can be compressed or decompressed, and the gas pressure inside the GIS device 1 can be adjusted.

[0058] The specific structure of the transmission assembly 43 will be described below with reference to a specific embodiment. As shown in Figure 2 The transmission assembly 43 includes a turbine 431 and a worm 432. The output shaft of the motor 411 is fixedly connected with the worm 432, the worm 432 is engaged with the turbine 431, and the driving rod 42 is provided with a tooth trace 5. The tooth trace 5 on the driving rod 42 is engaged with the turbine 431.

[0059] Wherein, since the output shaft of the motor 411 is fixedly connected with the worm 432, when the output shaft of the motor 411 rotates, the worm 432 also rotates, at this time, the worm wheel 431 engaged with the worm 432 rotates, and the driving rod 42 is driven to move linearly under the driving of the worm wheel 431. Specifically, the GIS device 1 is provided with a limiting piece for limiting the linear movement of the driving rod 42, for example, the limiting piece has a limiting groove, the length direction of the limiting groove is the direction from the first end 1131 to the second end 1132, and the driving rod 42 is arranged in the limiting groove, so that when the worm wheel 431 rotates, since the tooth trace 5 on the driving rod 42 is engaged with the worm wheel 431, the driving rod 42 will move along the length direction of the limiting groove, and when the rotation direction of the output shaft of the motor 411 is different, the driving rod 42 will move in different directions.

[0060] In an optional embodiment of the present application, as shown in Figure 5 The power piece 41 can also include an electric push rod, the end of the electric push rod is fixedly connected with the driving rod 42, so that when the electric push rod is started, the driving rod 42 can be driven to move, so that the distance between the first end 1131 and the second end 1132 of the bellows 113 changes.

[0061] In an optional embodiment of the present application, as shown in Figure 1 The number of the driving mechanisms 4 is two, the driving rod 42 of one driving mechanism 4 is fixedly connected with the first end 1131 of the bellows 113, and the driving rod 42 of the other driving mechanism 4 is fixedly connected with the second end 1132 of the bellows 113.

[0062] Wherein, when one driving rod 42 drives the first end 1131 to move in the first direction and the other driving rod 42 drives the second end 1132 to move in the second direction, at this time, the distance between the first end 1131 and the second end 1132 decreases, and when one driving rod 42 drives the first end 1131 to move in the second direction and the other driving rod 42 drives the second end 1132 to move in the first direction, at this time, the distance between the first end 1131 and the second end 1132 increases. Therefore, according to the different connection relationship between the driving rod 42, the first end 1131 and the second end 1132, when the driving rod 42 moves in different directions, the distance between the first end 1131 and the second end 1132 can be changed. By arranging two driving mechanisms 4, the first end 1131 and the second end 1132 of the bellows 113 can be simultaneously moved to compress or expand the bellows 113, and the gas pressure of the GIS device 1 can be quickly restored to the initial state.

[0063] In an optional embodiment of the present application, the temperature monitoring device 2 comprises a temperature detecting member 21 and a temperature control module 22; the temperature detecting member 21 is arranged on the outer wall of the device body 11 to monitor the external environment temperature of the device body 11; the input end of the temperature control module 22 is electrically connected with the temperature detecting member 21, and the output end of the temperature control module 22 is electrically connected with the control device 3, for determining the temperature difference between the external environment temperature and the preset standard temperature based on the external environment temperature and the preset standard temperature, and sending the temperature difference to the control device 3.

[0064] In an optional embodiment of the present application, the temperature monitoring device 2 comprises a temperature detecting member 21 and a temperature control module 22; the temperature detecting member 21 is arranged on the outer wall of the device body 11 to monitor the external environment temperature of the device body 11; the input end of the temperature control module 22 is electrically connected with the temperature detecting member 21, and the output end of the temperature control module 22 is electrically connected with the control device 3, for determining the temperature difference between the external environment temperature and the preset standard temperature based on the external environment temperature and the preset standard temperature, and sending the temperature difference to the control device 3.

[0065] The temperature control module 22 is a module capable of logical calculation control, which can calculate the temperature difference between the external environment temperature and the preset standard temperature and send it to the control device 3. Specifically, it can be composed of a microprocessor.

[0066] Through the above scheme, the external environment temperature can be conveniently detected, and the temperature difference between the external environment temperature and the preset standard temperature can be obtained and sent to the control device 3.

[0067] In an optional embodiment of the present application, the GIS device gas pressure compensation system further comprises a pressure detecting member 6 for detecting the internal gas pressure of the GIS device 1. The pressure detecting member 6 is a component capable of detecting the pressure value. The pressure detecting member 6 can be arranged at the gas inlet of the GIS device 1, so that the gas pressure in the GIS device 1 can be monitored in real time. For example, in the present embodiment, the gas inlet is communicated with the first GIS gas chamber 111, and the pressure detecting member 6 is arranged at the gas inlet, so that the gas pressure in the GIS device 1 can be conveniently detected. In a specific embodiment, the pressure detecting member 6 is a pressure gauge, which is an instrument with an elastic element as a sensitive element to measure and indicate the pressure higher than the ambient pressure, and is widely used in almost all industrial processes and scientific research fields.

[0068] In the optional embodiment of the present application, the GIS device air pressure compensation system further comprises an adjusting scale 7 for detecting the adjusting change amount of the bellows 113. The adjusting scale 7 is a length standard of optical measuring instrument, which is widely used in instruments for measuring length. The distance between the first end 1131 and the second end 1132 of the bellows 113 can be measured through the adjusting scale 7, and the visibility is increased.

[0069] For example, in a specific embodiment, the preset standard temperature is 25°C. At the preset standard temperature of 25°C, the relevant GIS device 1 air chamber is filled with air, and the driving mechanism 4 is loosened, so that the bellows 113 is self- relaxed and contracted. When the relevant GIS device 1 air chamber is filled with air to the standard air pressure (observed by the pressure gauge), the pointer of the adjusting scale 7 is aligned with the zero scale at this time, which is the initial zero scale of the standard bellows 113 adjusting amount. The subsequent changes of the bellows 113 can be conveniently read by the scale.

[0070] It should be understood that various forms of flow shown above can be used to reorder, add or delete steps. For example, each step described in the present application can be executed in parallel, sequentially or in different order, as long as the desired results of the technical solutions of the present application can be achieved, which is not limited herein.

[0071] The above specific embodiments do not constitute a limitation on the protection scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A gas pressure compensation system for a GIS device, characterized by, The GIS device (1), the temperature monitoring device (2), the control device (3) and the pressure adjusting device are included. The GIS device (1) comprises a device body (11), the device body (11) comprises a first GIS gas chamber (111), a second GIS gas chamber (112) and a bellows (113), the bellows (113) comprises opposite first and second ends (1131) and (1132), the first end (1131) of the bellows (113) is in communication with the first GIS gas chamber (111), and the second end (1132) of the bellows (113) is in communication with the second GIS gas chamber (112). The temperature monitoring device (2) is used for monitoring the external environment temperature of the device body (11). The input end of the control device (3) is electrically connected with the temperature monitoring device (2), and is used for outputting an adjusting signal based on the temperature difference between the external environment temperature and a preset standard temperature. The input end of the pressure adjusting device is electrically connected with the output end of the control device (3), and is used for controlling the bellows (113) to contract or dilate based on the adjusting signal. The control device (3) is specifically used for: outputting a first adjusting signal when the temperature difference is greater than zero; outputting a second adjusting signal when the temperature difference is less than zero. The pressure adjusting device is used for controlling the bellows (113) to dilate based on the first adjusting signal, and is used for controlling the bellows (113) to contract based on the second adjusting signal. The pressure adjusting device comprises a driving mechanism (4), the driving mechanism (4) is used for driving the distance between the first end (1131) and the second end (1132) of the bellows (113) to decrease to make the bellows (113) contract, and is used for driving the distance between the first end (1131) and the second end (1132) of the bellows (113) to increase to make the bellows (113) dilate.

2. The GIS apparatus gas pressure compensation system of claim 1, wherein, The driving mechanism (4) comprises a power member (41) and a driving rod (42), one end of the driving rod (42) is connected with the power member (41), the other end of the driving rod (42) is fixedly connected with the first end (1131) and / or the second end (1132) of the bellows (113), and the power member (41) is used for driving the driving rod (42) to move in a first direction and a second direction, so that the distance between the first end (1131) and the second end (1132) decreases or increases. The first direction is a direction in which the first end (1131) faces the second end (1132), and the second direction is a direction in which the second end (1132) faces the first end (1131).

3. The GIS apparatus gas pressure compensation system of claim 2, wherein, The power element (41) comprises a motor (411), which is arranged on the outer wall of the device body (11), and the driving mechanism (4) further comprises a transmission assembly (43) connected between the motor (411) and the driving rod (42), which is used for converting the rotating torque of the motor (411) into the linear motion of the driving rod (42).

4. The GIS apparatus gas pressure compensation system of claim 3, wherein, The transmission assembly (43) comprises a turbine (431) and a worm (432), the output shaft of the motor (411) is fixedly connected with the worm (432), the worm (432) is engaged with the turbine (431), and the driving rod (42) is provided with a tooth trace (5), and the tooth trace (5) on the driving rod (42) is engaged with the turbine (431).

5. The GIS apparatus gas pressure compensation system of claim 3 or 4, wherein, The number of the driving mechanism (4) is two, the driving rod (42) of one driving mechanism (4) is fixedly connected with the first end (1131) of the bellows (113), and the driving rod (42) of the other driving mechanism (4) is fixedly connected with the second end (1132) of the bellows (113). And / or, the first adjusting signal is a forward rotation signal, the motor (411) is used for forward rotation based on the forward rotation signal, and the driving rod (42) is used for driving the first end (1131) and / or the second end (1132) to move in the direction of approaching each other when the motor (411) is forward rotated, so as to compress the bellows (113); the second adjusting signal is a reverse rotation signal, the motor (411) is used for reverse rotation based on the reverse rotation signal, and the driving rod (42) is used for driving the first end (1131) and / or the second end (1132) to move in the direction of moving away from each other when the motor (411) is reverse rotated, so as to relax the bellows (113).

6. The GIS apparatus gas pressure compensation system of any one of claims 1 to 4, wherein, The temperature monitoring device (2) comprises temperature detection elements (21) and a temperature control module (22); The temperature detection elements (21) are arranged on the outer wall of the device body (11) to monitor the external environment temperature of the device body (11); The input end of the temperature control module (22) is electrically connected with the temperature detection elements (21), the output end of the temperature control module (22) is electrically connected with the control device (3), which is used for determining the temperature difference between the external environment temperature and a preset standard temperature based on the external environment temperature and the preset standard temperature, and sending the temperature difference to the control device (3).

7. The GIS apparatus gas pressure compensation system of claim 6, wherein, The temperature detection elements (21) comprise temperature sensors.

8. The GIS apparatus gas pressure compensation system of any one of claims 1-4, wherein, The GIS device gas pressure compensation system further comprises at least one of the following: Pressure detection elements (6) are used for detecting the internal gas pressure of the GIS device (1); Adjustment scales (7) are used for detecting the adjustment change amount of the bellows (113).

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