Anti-misoperation GIS equipment gas multi-parameter state monitoring device and control method thereof

Abstract

The invention discloses an anti-misoperation GIS equipment gas multi-parameter state monitoring device and a control method thereof. The anti-misoperation GIS equipment gas multi-parameter state monitoring device comprises a partition area, a backflow area, a heat insulation area and a detection area which are closed areas arranged in a shell; an electromagnetic valve is arranged in the partition area and is respectively communicated with the GIS equipment and a gas path of the backflow area; the backflow area is respectively communicated with the gas adjusting assembly of the heat insulation area, the micro-water transmitter of the detection area and the SF6 gas decomposer transmitter through gas paths; the anti-misoperation gas density relay is positioned on the outer side of the shell and is communicated with a gas path of the backflow area; the control assembly is electrically connected with the electromagnetic valve, the micro-water transmitter, the SF6 gas decomposer transmitter, a temperature sensor in the gas adjusting assembly and a GIS equipment control platform, and the density, the micro-water content value and the decomposer content value of the SF6 gas in the GIS equipment are detected in real time. The accuracy of on-line monitoring data is improved through real-time on-line detection of the density, the micro-water content and the decomposer content of the SF6 gas in the GIS equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of GIS equipment detection, and in particular to a gas multi-parameter state monitoring device for preventing malfunction of GIS equipment and a control method thereof. Background Art

[0002] In recent years, with the rapid economic development of my country, SF6 electrical equipment has been widely used in power departments and industrial and mining enterprises, promoting the rapid development of the power industry. As an insulating gas with good performance, SF6 gas is widely used in GIS equipment as an arc extinguishing and insulating medium. The arc extinguishing and insulation properties of SF6 gas are related to the density, trace water content and gas decomposition products of SF6 gas. The arc extinguishing and insulation properties of SF6 gas directly affect the safe operation of GIS equipment. It is extremely important to conduct online monitoring of the density, trace water content and gas decomposition products of SF6 gas in GIS equipment to detect problems in time and prevent accidents.

[0003] When the GIS equipment is operating normally, the fluctuation of the ambient temperature will cause the pressure fluctuation of the SF6 gas inside the GIS equipment, and at the same time, the temperature of the SF6 gas inside the GIS equipment will be unevenly distributed in space. The density value of the SF6 gas is calculated based on the pressure value and temperature value of the SF6 gas. When measuring the temperature of the SF6 gas on site, the temperature sensor (402) is generally installed on the outside of the GIS equipment, and does not directly measure the temperature of the SF6 gas inside the GIS equipment. Therefore, it cannot accurately reflect the actual temperature of the SF6 gas, and cannot accurately reflect the actual density of the SF6 gas inside the GIS equipment.

[0004] The water content in SF6 gas will change with the operation and use of GIS equipment. The reasons for these changes may be partial discharge inside GIS equipment, the decline of sealing performance of GIS equipment and its accessories, and the increase of water content in SF6 gas due to high humidity, which in turn leads to the decline of arc extinguishing and insulation performance of SF6 gas.

[0005] Partial discharge inside GIS equipment will also cause SF6 to produce gaseous decomposition products. HF gas, as one of the decomposition products of SF6 gas, is highly corrosive and will affect the insulation performance of GIS equipment. When SF6 gas decomposes during discharge, it will produce charged materials such as free radicals and ions that affect the arc extinguishing performance. In addition, when the concentration of harmful decomposition products such as HF gas increases, the gas is prone to breakdown, and even causes partial discharge and flashover, affecting the arc extinguishing effect. It also affects the service life of GIS equipment. Similarly, the micro-water content in SF6 gas is unevenly distributed in GIS equipment, resulting in the general micro-water online monitoring not being able to truly reflect the micro-water content.

[0006] SF6 gas density relay is one of the key components of SF6 electrical equipment. It is used to detect the change of SF6 gas density in the body of SF6 electrical equipment. Its performance directly affects the reliable and safe operation of SF6 electrical equipment. The density relay currently used in large quantities is a SF6 gas density relay with a micro switch as the contact. Although its contact has excellent electrical performance, due to its unreasonable internal structure and poor vibration resistance, it is easy to cause the contact to malfunction signal output during field application, and cannot guarantee the effective and reliable operation of the system. In particular, some SF6 circuit breakers often generate a large impact force during the opening / closing operation process. In particular, when the equipment pressure is close to the alarm pressure point or the locking pressure point, it cannot withstand the 50g, 11ms impact test, and the alarm or locking contact will malfunction. For example: for a density relay of 0.6 / 0.575 / 0.55, when the gas density drops to the alarm action point, a 50g, 11ms impact test is performed, and the locking contacts will malfunction, and then a locking command will be issued to the switchgear. This cannot meet the reclosing requirements of the SF6 switch, and its vibration resistance is not ideal, making it difficult to ensure reliable operation of the power grid system.

[0007] To overcome the problem that the SF6 gas online monitoring system cannot truly reflect the actual situation due to the uneven spatial distribution of micro-water and decomposition products in SF6 gas; at the same time, when the GSI equipment is operated by the electrical switch opening / closing in the field environment, the SF6 gas density relay is easily affected by it and causes the contact malfunction signal output. Summary of the invention

[0008] The purpose of the embodiment of the present invention is to provide a multi-parameter gas status monitoring device for GIS equipment with an anti-false operation function and a control method thereof, which can improve the accuracy of online monitoring data by detecting the density, trace water and decomposition product content of SF6 gas in the GIS equipment in real time online; at the same time, it can prevent the SF6 gas density relay contact from malfunctioning and outputting signals, thereby improving efficiency and ensuring safety.

[0009] In order to solve the above technical problems, a first aspect of an embodiment of the present invention provides a multi-parameter gas state monitoring device for GIS equipment with an anti-malfunction function, comprising: a housing, a partition area, a reflow area, a heat insulation area, a detection area, an anti-malfunction gas density relay and a control component;

[0010] The partition area, the reflow area, the heat insulation area and the detection area are closed areas arranged inside the housing;

[0011] The partition area is provided with a solenoid valve, and the solenoid valve is connected to the GIS equipment and the gas path of the recirculation area respectively;

[0012] The reflux zone is gas-circuit-connected with the gas regulating assembly in the heat-insulating zone, the micro-water transmitter in the detection zone, and the SF6 gas decomposition product transmitter;

[0013] The anti-malfunction gas density relay is located outside the housing and is connected to the reflux zone gas path;

[0014] The control component is electrically connected to the solenoid valve, the micro-water transmitter, the SF6 gas decomposition product transmitter, the temperature sensor in the gas regulating component and the GIS equipment control platform, respectively, to detect the density, micro-water content value and decomposition product content value of the SF6 gas in the GIS equipment in real time.

[0015] Furthermore, a gas supply joint is also provided on the side wall of the reflow zone.

[0016] Furthermore, a heat insulation board is provided between the heat insulation area and the detection area.

[0017] Further, the control component is located inside the control area;

[0018] An insulating plate is arranged between the control area and the detection area.

[0019] Further, the types of the micro-water transmitter include: capacitive, chilled mirror, infrared, conductive, microwave, sonic or optical;

[0020] Preferably, the type of the micro-water transmitter is capacitive.

[0021] Furthermore, the types of the SF6 gas decomposition product transmitter include: thermal conductivity, infrared, electrochemical, gas chromatography, mass spectrometry or photoacoustic;

[0022] Preferably, the SF6 gas decomposition product transmitter is of infrared type.

[0023] Furthermore, the types of the solenoid valve include: an electric ball valve, an electric butterfly valve, an electric regulating valve, an electric gate valve or an electric stop valve.

[0024] Further, the types of the gas regulating components include: heat tracing regulation, piston regulation, bellows regulation or air bag regulation;

[0025] Preferably, the gas regulating component is of the type of heat tracing regulation.

[0026] Furthermore, the anti-malfunction gas density relay comprises: a closed housing and a pressure detection component and an anti-malfunction component arranged inside the closed housing;

[0027] When the GIS device is opened / closed or subjected to vibration, the anti-misoperation component switches the anti-misoperation microswitch state through the different movement tendencies of counterweights of different weights when subjected to vibration, disconnects the signal transmission path between the pressure detection component and the GIS device control platform, and prevents the pressure detection component from sending false alarm signals and / or locking signals to the GIS device control platform.

[0028] Further, the anti-misoperation component comprises: a first anti-misoperation unit and a second anti-misoperation unit;

[0029] The first anti-misoperation unit is electrically connected to the signal alarm unit of the pressure detection component and the GIS equipment control platform respectively. When the GIS equipment is opened / closed or vibrated, the anti-misoperation micro switch state is switched by the different movement trends of the counterweight blocks of different weights when vibrated, thereby disconnecting the alarm signal transmission path between the pressure detection component and the GIS equipment control platform;

[0030] The second anti-false operation unit is electrically connected to the locking signal unit of the pressure detection component and the GIS equipment control platform respectively. When the GIS equipment is opened / closed or subjected to vibration, the anti-false operation micro switch state is switched by the different movement trends of the counterweight blocks of different weights when subjected to vibration, thereby disconnecting the locking signal transmission path between the pressure detection component and the GIS equipment control platform.

[0031] Furthermore, the anti-misoperation component also includes: a third splint, a fourth splint, a fifth splint, an intermediate connecting shaft and a limiting shaft, and the intermediate connecting shaft and the limiting shaft respectively pass through the third splint, the first anti-misoperation unit, the fourth splint, the second anti-misoperation unit and the fifth splint in sequence.

[0032] Further, the first anti-misoperation unit includes: a first counterweight, a first connecting rod, a first anti-misoperation microswitch, a first anti-misoperation swing piece and a first counterweight screw, the first connecting rod is arranged between the third clamping plate and the fourth clamping plate through the intermediate connecting shaft, the first counterweight is arranged above one end of the first connecting rod, the first counterweight screw is fixed to the other end of the first connecting rod, the first counterweight screw is flexibly connected to the first anti-misoperation swing piece, the weight of the first counterweight is greater than that of the first counterweight screw, and the first anti-misoperation microswitch is connected in series with the first microswitch of the pressure detection assembly;

[0033] The second anti-misoperation unit comprises: a second counterweight, a second connecting rod, a second anti-misoperation microswitch, a second anti-misoperation swing piece and a second counterweight screw, the second connecting rod is arranged between the fourth clamping plate and the fifth clamping plate through the intermediate connecting shaft, the second counterweight is arranged above one end of the second connecting rod, the second counterweight screw is fixed to the other end of the second connecting rod, the second counterweight screw is flexibly connected to the second anti-misoperation swing piece, the weight of the second counterweight is greater than that of the second counterweight screw, and the second anti-misoperation microswitch is connected in series with the second microswitch of the pressure detection assembly;

[0034] When the GIS device is operating normally, the first anti-malfunction swing piece is respectively in contact with the first counterweight screw and the limit shaft, and the first anti-malfunction microswitch is in the on state. When the GIS device is opened / closed or subjected to vibration, the first counterweight moves downward, and the first counterweight screw and the first anti-malfunction swing piece are driven to rise in sequence through the first connecting rod. The first anti-malfunction swing piece is disengaged from the limit shaft and the switch contact of the first anti-malfunction microswitch, so that the first anti-malfunction microswitch is switched to the off state.

[0035] When the GIS equipment is operating normally, the second anti-misoperation pendulum piece is respectively in contact with the second counterweight screw and the limit shaft, so that the second anti-misoperation microswitch is in the on state; when the GIS equipment is opened / closed or subjected to vibration, the second counterweight block moves downward, and the second counterweight screw and the second anti-misoperation pendulum piece are driven to rise in turn through the second connecting rod; the second anti-misoperation pendulum piece is disengaged from the limit shaft and the switch contacts of the second anti-misoperation microswitch, so that the second anti-misoperation microswitch is switched to the off state.

[0036] Furthermore, the first anti-malfunction assembly further includes: a first return spring, a first upper base plate and a first lower base plate, two ends of the first counterweight block are respectively connected to the first upper base plate and the first lower base plate, the first return spring is sleeved on the first counterweight block, and two ends of the first return spring are respectively connected to the first upper base plate and the first lower base plate;

[0037] The second anti-misoperation component also includes: a second return spring, a second upper base plate and a second lower base plate, the two ends of the second counterweight block are respectively connected to the second upper base plate and the second lower base plate, the second return spring is sleeved on the second counterweight block, and the two ends of the second return spring are respectively connected to the second upper base plate and the second lower base plate.

[0038] Furthermore, the first anti-malfunction assembly further comprises: a first acceleration steel rope, through which the first counterweight screw and the first anti-malfunction swing piece are connected;

[0039] The second anti-malfunction component also includes: a second acceleration steel rope, and the second counterweight screw and the second anti-malfunction swing piece are connected through the second acceleration steel rope.

[0040] Accordingly, a second aspect of an embodiment of the present invention provides a control method for a GIS equipment gas multi-parameter state monitoring device for preventing malfunction, comprising the following steps:

[0041] Obtaining the gas pressure value, gas temperature value and gas humidity value detected by the micro-water transmitter, obtaining the gas decomposition product content value detected by the SF6 gas decomposition product transmitter, and calculating the micro-water content value of the SF6 gas in the GIS device based on the gas pressure value, the gas temperature value and the gas humidity value;

[0042] Close the solenoid valve, control the gas regulating component to heat the gas, and when the real-time temperature value detected by the temperature sensor rises to a first preset temperature threshold, close the gas regulating component;

[0043] Detecting the real-time temperature value of the temperature sensor, and when the real-time temperature value drops to a second temperature threshold, obtaining again the micro-water content value of the SF6 gas in the GIS equipment and the gas decomposition product content value detected by the SF6 gas decomposition product transmitter;

[0044] Compare the trace water content value and the gas decomposition product content value obtained twice before and after. If they are consistent, it is confirmed that the trace water content value and the gas decomposition product content value detected by the anti-malfunction GIS equipment gas multi-parameter status monitoring device are true values.

[0045] The above technical solution of the embodiment of the present invention has the following beneficial technical effects:

[0046] 1. Improve the accuracy of online monitoring data by real-time online detection of the density, trace water and decomposition content of SF6 gas in GIS equipment;

[0047] 2. By connecting the anti-false operation micro switch of the anti-false operation component of the airtight relay and the micro switch of the pressure detection component in series in the circuit, the counterweight on the anti-false operation component is forced to move down to the anti-false operation position, cutting off the alarm contact signal or the locking contact signal, thereby improving the accuracy and reliability of online monitoring and ensuring the safety of the power supply system. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1It is a schematic diagram of the structure of a multi-parameter gas state monitoring device for preventing malfunction of GIS equipment provided by an embodiment of the present invention;

[0049] Figure 2 It is a schematic diagram of the structure of a gas density relay for preventing malfunction provided by an embodiment of the present invention;

[0050] Figure 3 is a schematic diagram of the structure of an anti-malfunction component provided by an embodiment of the present invention;

[0051] Figure 4 is a schematic diagram of the structure of a pressure detection component provided by an embodiment of the present invention;

[0052] Figure 5 The figure is a block diagram of the electrical principle of the control circuit board provided by the embodiment of the present invention.

[0053] Reference numerals:

[0054] 1. Anti-misoperation gas density relay, 10. Anti-misoperation assembly, 101. First anti-misoperation unit, 1010. First counterweight, 1011. First reset spring, 1012. First upper base plate, 1013. First lower base plate, 1014. First connecting rod, 1015. First anti-misoperation micro switch, 1016. First anti-misoperation swing piece, 1017. First counterweight screw, 1018. First acceleration rope, 102. Second anti-misoperation unit, 1020. Second counterweight, 1021. Second reset spring, 1022. Second upper base plate, 1023. Second lower base plate, 1024. Second connecting rod, 1025. Second anti-misoperation micro switch, 1026. Second Anti-misoperation swing piece, 1027, second counterweight screw, 1028, second acceleration steel rope, 103, limit shaft, 104, intermediate connecting shaft, 105, third splint, 106, fourth splint, 107, fifth splint, 11, pressure detection component, 1100, mechanical watch case, 1101, joint, 1102, pipe sleeve, 1103, tightening screw plug, 1104, base, 1105, C-type tube, 1106, end seat, 1107, temperature compensation sheet, 1108, connecting nut, 1109, operating arm, 1110, first adjusting screw, 1111, second adjusting screw, 1112, contact circuit board, 1113, first insulating column, 1114, insulating pad, 1115, bracket , 1116, first micro switch, 1117, second micro switch, 1118, first splint, 1119, second splint, 1120, first pendulum, 1121, second pendulum, 1122, pull rod, 1123, movement, 1124, pointer, 1125, dial, 2, partition area, 20, air inlet connector, 21, first flange connector, 22, first capillary, 23, solenoid valve, 24, second capillary, 25, second flange connector, 3, reflux area, 30, reflux air inlet interface, 31, anti-malfunction gas density relay interface, 32, micro-water transmitter interface, 33, SF6 gas decomposition transmitter interface, 34, gas regulation component interface, 35, air supply interface, 36 , gas supply joint, 4, insulation area, 40, gas regulating component, 401, heater, 402, temperature sensor, 41, insulation board, 42, electrical connection plug, 5, detection area, 50, micro-water transmitter, 51, SF6 gas decomposition product transmitter, 6, control area, 60, control circuit board, 601, solenoid valve electrical interface, 602, micro-water transmitter electrical interface, 603, SF6 gas decomposition product transmitter electrical interface, 604, gas regulating component electrical interface, 605, temperature sensor electrical interface, 606, intelligent microprocessor, 607, communication module, 61, insulation board, 62, background electrical interface, 7, first connecting pipe, 8, GIS equipment, 80, main body gas circuit interface. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0056] Please refer to Figure 1 The first aspect of the embodiment of the present invention provides a multi-parameter gas state monitoring device for GIS equipment with an anti-malfunction, comprising: a shell, a partition area 2, a reflux area 3, an insulation area 4, a detection area 5, an anti-malfunction gas density relay 1 and a control component; the partition area 2, the reflux area 3, the insulation area 4 and the detection area 5 are closed areas arranged inside the shell; the partition area 2 is provided with a solenoid valve 23, and the solenoid valve 23 is respectively connected to the GIS equipment and the reflux area 3 by gas circuits; the reflux area 3 is respectively connected to the gas regulating component 40 of the insulation area 4, the micro-water transmitter 50 of the detection area 5 and the SF6 gas decomposition product transmitter 51 by gas circuits; the anti-malfunction gas density relay 1 is located outside the shell and is connected to the reflux area 3 by gas circuits; the control component is respectively electrically connected to the solenoid valve 23, the micro-water transmitter 50, the SF6 gas decomposition product transmitter 51, the temperature sensor 402 in the gas regulating component 40 and the GIS equipment control platform to detect the density, micro-water content value and decomposition product content value of SF6 gas in the GIS equipment in real time.

[0057] The above-mentioned anti-false operation GIS equipment gas multi-parameter state monitoring device is used in the ubiquitous power Internet of Things SF6 gas density monitoring system, which solves the problem that the SF6 gas online monitoring system cannot truly reflect the actual situation due to the uneven spatial distribution of micro-water and decomposition products in SF6 gas. It realizes that the real-time online monitoring system can truly reflect the density, micro-water and decomposition content of SF6 gas in GIS equipment in real time, and improves the accuracy of online monitoring data; at the same time, it can prevent the SF6 gas density relay from malfunctioning and outputting signals, improve efficiency and ensure safety. At the same time, when the GSI equipment is in the field environment, the electrical switch is opened / closed, and the SF6 gas density relay is easily affected by it, causing the contact to malfunction and output signals, affecting the technical problem of reliable operation of SF6 high-voltage electrical equipment.

[0058] Specifically, the side wall of the reflux zone 3 is also provided with an air supply joint 36. A heat insulation board 41 is provided between the heat insulation zone 4 and the detection zone 5. The control assembly is located inside the control zone 6; an insulating board 61 is provided between the control zone 6 and the detection zone 5. The types of the micro-water transmitter 50 include: capacitive, cold mirror, infrared, conductive, microwave, sonic or optical; preferably, the type of the micro-water transmitter 50 is capacitive.

[0059] Furthermore, the types of the SF6 gas decomposition product transmitter 51 include: thermal conductivity type, infrared type, electrochemical type, gas chromatography type, mass spectrometry type or photoacoustic type; preferably, the type of the SF6 gas decomposition product transmitter 51 is infrared type.

[0060] Furthermore, types of the solenoid valve 23 include: an electric ball valve, an electric butterfly valve, an electric regulating valve, an electric gate valve or an electric stop valve.

[0061] Furthermore, the types of the gas regulating assembly 40 include: heat tracing regulation, piston regulation, bellows regulation or air bag regulation; preferably, the type of the gas regulating assembly 40 is heat tracing regulation.

[0062] For further information, please refer to Figure 2 , Figure 3 and Figure 4 The anti-false operation gas density relay 1 includes: a closed housing and a pressure detection component 11 and an anti-false operation component 10 arranged inside the closed housing; when the GIS equipment is opened / closed or vibrated, the anti-false operation component 10 switches the anti-false operation micro switch state through the different movement trends of counterweights with different weights when vibrated, disconnects the signal transmission path between the pressure detection component 11 and the GIS equipment control platform, and prevents the pressure detection component 11 from sending a false alarm signal and / or a locking signal to the GIS equipment control platform.

[0063] Furthermore, the anti-false operation component 10 includes: a first anti-false operation unit 101 and a second anti-false operation unit 102. The first anti-false operation unit 101 is electrically connected to the signal alarm unit of the pressure detection component 11 and the GIS equipment control platform, respectively. When the GIS equipment is opened / closed or subjected to vibration, the anti-false operation micro switch state is switched by the different movement trends of the counterweight blocks with different weights when subjected to vibration, and the alarm signal transmission path between the pressure detection component 11 and the GIS equipment control platform is disconnected. The second anti-false operation unit 102 is electrically connected to the locking signal unit of the pressure detection component 11 and the GIS equipment control platform, respectively. When the GIS equipment is opened / closed or subjected to vibration, the anti-false operation micro switch state is switched by the different movement trends of the counterweight blocks with different weights when subjected to vibration, and the locking signal transmission path between the pressure detection component 11 and the GIS equipment control platform is disconnected.

[0064] Furthermore, the anti-misoperation component 10 also includes: a third clamping plate 105, a fourth clamping plate 106, a fifth clamping plate 107, an intermediate connecting shaft 104 and a limiting shaft 103, and the intermediate connecting shaft 104 and the limiting shaft 103 respectively pass through the third clamping plate 105, the first anti-misoperation unit 101, the fourth clamping plate 106, the second anti-misoperation unit 102 and the fifth clamping plate 107 in sequence.

[0065] The first anti-misoperation unit 101 includes: a first counterweight 1010, a first connecting rod 1014, a first anti-misoperation microswitch 1015, a first anti-misoperation swing piece 1016 and a first counterweight screw 1017. The first connecting rod 1014 is connected to the intermediate connecting shaft 104 through a hole shaft. The first connecting rod 1014 is arranged between the third clamping plate 105 and the fourth clamping plate 106 through the intermediate connecting shaft 104. The first counterweight 1010 is arranged above one end of the first connecting rod 1014. The first counterweight screw 1017 is fixed to the other end of the first connecting rod 1014. The first counterweight screw 1017 is flexibly connected to the first anti-misoperation swing piece 1016. The weight of the first counterweight 1010 is greater than that of the first counterweight screw 1017. The first anti-misoperation microswitch 1015 is connected in series with the first microswitch of the pressure detection component 11.

[0066] The second anti-misoperation unit 102 includes: a second counterweight 1020, a second connecting rod 1024, a second anti-misoperation microswitch 1025, a second anti-misoperation pendulum 1026 and a second counterweight screw 1027. The second connecting rod 1024 is arranged between the fourth clamping plate 106 and the fifth clamping plate 107 through the intermediate connecting shaft 104. The second counterweight 1020 is arranged above one end of the second connecting rod 1024. The second counterweight screw 1027 is fixed to the other end of the second connecting rod 1024. The second counterweight screw 1027 is flexibly connected to the second anti-misoperation pendulum 1026. The weight of the second counterweight 1020 is greater than that of the second counterweight screw 1027. The second anti-misoperation microswitch 1025 is connected in series with the second microswitch of the pressure detection component 11.

[0067] When the GIS equipment is operating normally, the first anti-misoperation pendulum 1016 is respectively in contact with the first counterweight screw 1017 and the limit shaft 103, and the first anti-misoperation microswitch 1015 is in the on state. When the GIS equipment is opened / closed or subjected to vibration, the first counterweight block 1010 moves downward, and drives the first counterweight screw 1017 and the first anti-misoperation pendulum 1016 to rise in turn through the first connecting rod 1014. The first anti-misoperation pendulum 1016 is disengaged from the limit shaft 103 and the switch contacts of the first anti-misoperation microswitch 1015, so that the first anti-misoperation microswitch 1015 is switched to the off state.

[0068] When the GIS equipment is operating normally, the second anti-misoperation pendulum 1026 is respectively in contact with the second counterweight screw 1027 and the limit shaft 103, so that the second anti-misoperation microswitch 1025 is in the on state. When the GIS equipment is opened / closed or subjected to vibration, the second counterweight block 1020 moves downward, and drives the second counterweight screw 1027 and the second anti-misoperation pendulum 1026 to rise in turn through the second connecting rod 1024. The second anti-misoperation pendulum 1026 is disengaged from the limit shaft 103 and the switch contacts of the second anti-misoperation microswitch 1025, so that the second anti-misoperation microswitch 1025 is switched to the off state.

[0069] Further, the first anti-malfunction assembly 10 also includes: a first return spring 1011, a first upper base plate 1012 and a first lower base plate 1013, two ends of the first counterweight 1010 are respectively connected to the first upper base plate 1012 and the first lower base plate 1013, the first return spring 1011 is sleeved on the first counterweight 1010, and two ends of the first return spring 1011 are respectively connected to the first upper base plate 1012 and the first lower base plate 1013. The first return spring 1011 is sleeved on the first counterweight 1010 to ensure that the first counterweight 1010 has no contact with the first connecting rod 1014 during normal use (no vibration). The position of the first lower base plate 1013 is fixed, and the position of the first upper base plate 1012 is variable; when subjected to vibration, the first counterweight block 1010 and the first upper base plate 1012 will move downward, the first counterweight block 1010 will abut against the first connecting rod 1014, and drive the first connecting rod 1014 to rotate.

[0070] The second anti-malfunction assembly 10 also includes: a second return spring 1021, a second upper base plate 1022 and a second lower base plate 1023. The two ends of the second counterweight 1020 are respectively connected to the second upper base plate 1022 and the second lower base plate 1023. The second return spring 1021 is sleeved on the second counterweight 1020, and the two ends of the second return spring 1021 are respectively connected to the second upper base plate 1022 and the second lower base plate 1023. The second return spring 1021 is sleeved on the second counterweight 1020 to ensure that the second counterweight 1020 has no contact with the second connecting rod 1024 during normal use (no vibration). The position of the second lower base plate 1023 is fixed, and the position of the second upper base plate 1022 is variable; when subjected to vibration, the second counterweight 1020 and the second upper base plate 1022 will move downward, and the second counterweight 1020 will abut against the second connecting rod 1024, and drive the second connecting rod 1024 to rotate.

[0071] Furthermore, the first anti-misoperation component 10 also includes: a first acceleration steel rope 1018, and the first counterweight screw 1017 is connected to the first anti-misoperation swing piece 1016 through the first acceleration steel rope 1018; the second anti-misoperation component 10 also includes: a second acceleration steel rope 1028, and the second counterweight screw 1027 is connected to the second anti-misoperation swing piece 1026 through the second acceleration steel rope 1028.

[0072] The monitoring device described above is described in detail below with reference to a specific implementation of an embodiment of the present invention:

[0073] The above-mentioned GIS equipment gas multi-parameter state monitoring device for preventing malfunction includes: an anti-malfunction gas density relay 1, a partition area 2, a reflux area 3, an insulation area 4, a detection area 5, a control area 6, a first connecting pipe 7 and a GIS device 8.

[0074] Specifically, the partition area 2 includes: an air inlet joint 20, a first flange joint 21, a first capillary 22, a solenoid valve 23, a second capillary 24 and a second flange joint 25; the reflux area 3 includes: a reflux air inlet interface 30, an anti-false operation gas density relay interface 31, a micro-water transmitter interface 32, an SF6 gas decomposition product transmitter interface 33, a gas regulating component interface 34, a gas supply interface 35 and a gas supply joint 36; the heat insulation area 4 includes: a gas regulating structure 40, a heat insulation board 41 and an electrical connection plug 42; the detection area 5 includes: a micro-water transmitter 50 and a SF6 gas decomposition product transmitter 51; the control area 6 includes: a control circuit board 60, an insulating board 61 and a background electrical interface 62.

[0075] The main body gas circuit interface 80 of the GIS equipment 8 is connected to the air inlet joint 20 through the first connecting pipe 7 to achieve gas circuit sealing connection, and the air inlet joint 20 is connected to the first flange joint 21 to achieve gas circuit sealing connection; the first flange joint 21 is connected to one end of the solenoid valve 23 through the first capillary 22 to achieve gas circuit sealing connection, and the other end of the solenoid valve 23 is connected to the second flange joint 25 through the second capillary 24 to achieve gas circuit sealing connection; the second flange joint 25 is connected to the reflux air inlet interface 30 to achieve gas circuit sealing connection between the solenoid valve 23 and the reflux zone 3.

[0076] The anti-malfunction gas density relay 1 is sealed and connected to the reflux zone 3 through the anti-malfunction gas density relay interface 31; the micro-water transmitter 50 is sealed and connected to the reflux zone 3 through the micro-water transmitter interface 32; the SF6 gas decomposition product transmitter 51 is sealed and connected to the reflux zone 3 through the SF6 gas decomposition product transmitter interface 33; the gas regulating component 40 is sealed and connected to the reflux zone 3 through the gas regulating component interface 34; the gas supply joint 36 is sealed and connected to the reflux zone 3 through the gas supply interface 35.

[0077] Furthermore, the control cable of the solenoid valve 23 is electrically connected to the solenoid valve electrical interface 601 of the control circuit board 60, the control cable of the micro-water transmitter 50 is electrically connected to the micro-water transmitter electrical interface 602 of the control circuit board 60, the control cable of the SF6 gas decomposition product transmitter 51 is electrically connected to the SF6 gas decomposition product transmitter electrical interface 603 of the control circuit board 60, the control cable of the gas regulating component 40 and the cable of the temperature sensor 402 are electrically connected to the gas regulating component electrical interface 604 and the temperature sensor electrical interface 605 of the control circuit board 60 respectively through the electrical connection plug 42, and the anti-malfunction GIS equipment gas multi-parameter state monitoring device is electrically connected to the background control system through the background electrical interface 62. In addition, a communication module 607 is also provided on the control circuit board 60.

[0078] In addition, the micro-water transmitter 50 and / or the SF6 gas decomposition product transmitter 51 in the present invention can also be replaced by an SF6 density transmitter, a pressure and temperature transmitter, or an SF6 / N2 mixed gas transmitter.

[0079] Specifically, the micro-water transmitter 50 is capacitive, including a pressure sensor, a temperature sensor, and a capacitive humidity sensor. The pressure sensor and the temperature sensor can be used to calculate the density value of SF6 gas, and can also be used to calculate and correct the micro-water content value calculated by the capacitive humidity sensor.

[0080] Furthermore, the SF6 gas decomposition product transmitter 51 can be thermal conductivity, infrared, electrochemical, gas chromatography, mass spectrometry, photoacoustic, etc. according to its measurement principle, and can measure the decomposition products of SF6 gas such as hydrofluoric acid (HF), sulfur dioxide (SO2), sulfuryl fluoride (SO2F2), sulfur difluoride (SF2), carbon monoxide (CO), etc. As a preferred embodiment, the measurement principle of the SF6 gas decomposition product transmitter 51 is infrared measurement.

[0081] Furthermore, the anti-false operation gas density relay 1 is used to display the density of SF6 gas in the GIS equipment 8 on site, and can also output dry contact switch signals such as alarm and lockout to the controller of the GIS equipment 8 when the SF6 gas density decreases and triggers a warning.

[0082] The heat insulation board 41 is used to isolate the heat generated by the heater 401 of the gas regulating assembly 40 when it is working, reducing the influence of the heat on the control circuit board 60 through heat radiation and / or heat convection; the electrical connection plug 42 is fixed on the heat insulation board 41; the temperature sensor 402 is used to detect the gas temperature inside the gas regulating assembly 40. The insulation board 61 is used to insulate and fix the control circuit board 60.

[0083] Specifically, the anti-malfunction gas density relay 1 includes: a pressure detection component 11 and an anti-malfunction component 10 .

[0084] The first anti-misoperation microswitch 1015 of the anti-misoperation component 10 is connected in series with the first microswitch 1116 of the pressure detection component 11 in the circuit, and the second anti-misoperation microswitch 1025 of the anti-misoperation component 10 is connected in series with the second microswitch 1117 of the pressure detection component 11 in the circuit.

[0085] The pressure detection component 11 deforms a fixed amount according to the change of gas pressure in the electrical equipment to reflect the change of the density of the gas to be measured; the anti-false operation component 10 prevents the pressure detection component 11 from false alarm / locking caused by the opening and closing of the electrical equipment or vibration during operation.

[0086] More specifically, the pressure detection assembly 11 includes a mechanical case 1100, and a joint 1101, a sleeve 1102, a compression screw 1103, a base 1104, a C-type tube 1105, an end seat 1106, a temperature compensation plate 1107, a connecting nut 1108, an operating arm 1109, a first adjusting screw 1110, a second adjusting screw 1111, a contact circuit board 1112, a first insulating column 1113, an insulating pad 1114, a bracket 1115, a first micro switch 1116, a second micro switch 1117, a first splint 1118, a second splint 1119, a first pendulum 1120, a second pendulum 1121, a pull rod 1122, a movement 1123, a pointer 1124, and a dial 1125.

[0087] The pipe sleeve 1102 is connected to the joint 1101 through a capillary tube, and the pipe sleeve 1102 is fixedly connected to the base 1104 through a compression screw plug 1103. A sealing gasket and an O-ring are fixedly arranged between the pipe sleeve 1102 and the base 1104 to achieve sealing.

[0088] One end of the C-type tube 1105 is fixedly connected to the base 1104, and the other end of the C-type tube 1105 is fixedly connected to one end of the temperature compensation plate 1107 through the end seat 1106; the other end of the temperature compensation plate 1107 is fixedly connected to one end of the operating arm 1109; one end of the pull rod 1122 is fixedly connected to one end of the operating arm 1109 through the connecting nut 1108, and the other end of the pull rod 1122 is connected to the movement 1123; the movement 1123 is fixedly connected to the base 1104, and the dial 1125 and the pointer 1124 are arranged on the movement 1123 in sequence; the other end of the operating arm 1109 is provided with a first adjusting screw 1110 and a second adjusting screw 1111 in sequence. Based on the gas pressure, the operating arm 1109 drives the first adjusting screw 1110 to contact or disengage with the first pendulum piece 1120 on the first micro switch 1116; and / or drives the second adjusting screw 1111 to contact or disengage with the second pendulum piece 1121 on the second micro switch 1117.

[0089] Specifically, the anti-malfunction assembly 10 includes a first anti-malfunction unit 101, a second anti-malfunction unit 102, a limit shaft 103, an intermediate connecting shaft 104, a third clamping plate 105, a fourth clamping plate 106 and a fifth clamping plate 107. The first anti-malfunction unit 101 is arranged between the third clamping plate 105 and the fourth clamping plate 106; the second anti-action assembly 102 is arranged between the fourth clamping plate 106 and the fifth clamping plate 107. The third clamping plate 105, the fourth clamping plate 106 and the fifth clamping plate 107 are connected and fixed in sequence through the intermediate connecting shaft 104. The first clamping plate 1118, the second clamping plate 1119, the third clamping plate 105, the fourth clamping plate 106 and the fifth clamping plate 107 are connected and fixed in sequence through the limit shaft 103.

[0090] The first anti-malfunction unit 101 includes: a first counterweight 1010, a first return spring 1011, a first upper base plate 1012, a first lower base plate 1013, a first connecting rod 1014, a first anti-malfunction micro switch 1015, a first anti-malfunction swing piece 1016, a first counterweight screw 1017 and a first acceleration steel rope 1018. The second anti-malfunction unit 102 includes a second counterweight 1020, a second return spring 1021, a second upper base plate 1022, a second lower base plate 1023, a second connecting rod 1024, a second anti-malfunction micro switch 1025, a second anti-malfunction swing piece 1026, a second counterweight screw 1027 and a second acceleration steel rope 1028.

[0091] The first counterweight 1010 is fixedly connected to the first lower base plate 1013 and the first upper base plate 1012 in sequence by fixing screws. The second counterweight 1020 is fixedly connected to the second lower base plate 1023 and the second upper base plate 1022 in sequence by fixing screws. The first return spring 1011 is sleeved on the first counterweight 1010, the upper end of the first return spring 1011 is connected to the first upper base plate 1012, and the lower end of the first return spring 1011 is connected to the first lower base plate 1023. The second return spring 1021 is sleeved on the second counterweight 1020, the upper end of the second return spring 1021 is connected to the second upper base plate 1022, and the lower end of the second return spring 1021 is connected to the second lower base plate 1023. The first lower bottom plate 1013 is fixed between the third clamping plate 105 and the fourth clamping plate 106, and the second lower bottom plate 1023 is fixed between the fourth clamping plate 106 and the fifth clamping plate 107; the third clamping plate 105, the first lower bottom plate 1013, the fourth clamping plate 106, the second lower bottom plate 1023 and the fifth clamping plate 107 are fixedly connected by fixing bolts. The first connecting rod 1014 is fixed between the third clamping plate 105 and the fourth clamping plate 106 through the intermediate connecting shaft 104. A first counterweight screw 1017 is fixed at one end of the first connecting rod 1014, and a first counterweight block 1010 is fixed above the other end of the first connecting rod 1014. The second connecting rod 1024 is fixed between the fourth clamping plate 106 and the fifth clamping plate 107 through the intermediate connecting shaft 104; a second counterweight screw 1027 is fixed at one end of the second connecting rod 1024, and a second counterweight block 1020 is fixed above the other end of the second connecting rod 1024. A first acceleration steel rope 1018 is provided between the first counterweight screw 1017 and the first anti-misoperation swing piece 1016. A second acceleration steel rope 1028 is provided between the second counterweight screw 1027 and the second anti-misoperation swing piece 1026. The first micro switch 1116, the second micro switch 1117, the first anti-misoperation micro switch 1015 and the second anti-misoperation micro switch 1025 are fixed on the contact circuit board 1112, and the contact circuit board 1112 is insulated and fixed to one end of the bracket 1115 through the first insulating column 1113 and the insulating pad 1114; the other end of the bracket 1115 is fixedly connected to the base 1104.

[0092] When the electrical equipment is working normally or without vibration, the first counterweight screw 1017 contacts the first anti-misoperation pendulum 1016 and causes it to move downward and contact the limit shaft 103, at which time the circuit of the first anti-misoperation microswitch 1015 is turned on; the second counterweight screw 1027 contacts the second anti-misoperation pendulum 1026 and causes it to move downward and contact the limit shaft 103, at which time the circuit of the second anti-misoperation microswitch 1025 is turned on.

[0093] When the electrical device is working normally or without vibration, the first adjusting screw 1110 on the operating arm 1109 is disengaged from the first pendulum piece 1120, and the first pendulum piece 1120 is disengaged from the limit shaft 103, and the circuit of the first micro switch 1116 is disconnected. The second adjusting screw 1111 on the operating arm 1109 is disengaged from the second pendulum piece 1121, and the second pendulum piece 1121 is disengaged from the limit shaft 103, and the circuit of the second micro switch 1117 is disconnected.

[0094] When the electrical equipment is working normally or without vibration, the circuit of the first anti-maloperation microswitch 1015 is connected, the circuit of the first microswitch 1116 is disconnected, and the alarm contact signal is in the disconnected state; the circuit of the second anti-maloperation microswitch 1025 is connected, the circuit of the second microswitch 1117 is disconnected, and the locking contact signal is in the disconnected state.

[0095] The counterweight of the first counterweight block 1010 is greater than the first counterweight screw 1017. During the opening / closing or vibration of the electrical switch device, the first counterweight screw 1017 tends to move downward due to the vibration, and the limit shaft 103 can limit the downward movement of the first counterweight screw 1017 to ensure that the first anti-misoperation microswitch 1015 is not crushed; the tendency of the first counterweight block 1010 to move downward due to the vibration is greater than the tendency of the first counterweight screw 1017 to move downward due to the vibration. Finally, the first counterweight block 1010 is forced to move downward to the anti-misoperation position and contact the first connecting rod 1014, and the first counterweight screw 1017 is disengaged from the first anti-misoperation pendulum 1016. The first counterweight screw 1017 disengages the first anti-misoperation pendulum 1016 from the limit shaft 103 through the first acceleration steel rope 1018. At this time, the circuit of the first anti-misoperation microswitch 1015 is disconnected.

[0096] The counterweight of the second counterweight block 1020 is greater than that of the second counterweight screw 1027. During the opening / closing or vibration of the electrical switch device, the second counterweight screw 1027 tends to move downward due to the vibration, and the limit shaft 103 can limit the downward movement of the second counterweight screw 1027 to ensure that the second anti-misoperation microswitch 1025 is not crushed; the tendency of the second counterweight block 1020 to move downward due to the vibration is greater than the tendency of the second counterweight screw 1027 to move downward due to the vibration. Finally, the second counterweight block 1020 is forced to move downward to the anti-misoperation position and contact the second connecting rod 1024, and the second counterweight screw 1027 is disengaged from the second anti-misoperation pendulum 1026. The second counterweight screw 1027 disengages the second anti-misoperation pendulum 1026 from the limit shaft 103 through the second acceleration steel rope 1028. At this time, the circuit of the second anti-misoperation microswitch 1025 is disconnected.

[0097] When the electrical equipment is opened or closed or vibrates, the first adjusting screw 1110 on the operating arm 1109 contacts the first pendulum 1120 and causes it to move downward and contact the limit shaft 103, at which time the circuit of the first microswitch 1116 is turned on; the second adjusting screw 1111 on the operating arm 1109 contacts the second pendulum 1121 and causes it to move downward and contact the limit shaft 103, at which time the circuit of the second microswitch 1117 is turned on.

[0098] When the electrical equipment is opened or closed or vibrates, the circuit of the first anti-malfunction microswitch 1015 is disconnected, the circuit of the first microswitch 1116 is closed, and the alarm contact signal is in the disconnected state; the circuit of the second anti-malfunction microswitch 1025 is disconnected, the circuit of the second microswitch 1117 is closed, and the locking contact signal is in the disconnected state.

[0099] The distance that the first counterweight block 1010 moves downward to the anti-misoperation position is greater than the distance that the first adjusting screw 1110 on the operating arm 1109 contacts the first pendulum 1120 and moves it downward to contact the limit shaft 103, thereby ensuring that the anti-misoperation component 10 plays a corresponding effect during the entire vibration process, that is, the first microswitch 1116 outputs no misoperation signal when the electrical equipment is opened and closed or vibrates.

[0100] The distance that the second counterweight block 1020 moves downward to the anti-misoperation position is greater than the distance that the second adjusting screw 1111 on the operating arm 1109 contacts the second pendulum 1121 and moves it downward to contact the limit shaft 103, thereby ensuring that the anti-misoperation component 10 plays a corresponding effect during the entire vibration process, that is, the second microswitch 1117 outputs no misoperation signal when the electrical equipment is opened and closed or vibrates.

[0101] Accordingly, a second aspect of an embodiment of the present invention provides a control method for a GIS equipment gas multi-parameter state monitoring device for preventing malfunction, comprising the following steps:

[0102] In the non-working state, when the SF6 gas reflux mode is not started, 23 is in the passage state, and the heater 401 of the gas regulating assembly 40 is in the non-working state. The gas density relay 1, the micro-water transmitter 50 and the SF6 gas decomposition product transmitter 51 for preventing malfunction are connected to the GIS equipment 8 gas circuit.

[0103] Step S100, obtain the gas pressure value, gas temperature value and gas humidity value detected by the micro-water transmitter 50, obtain the gas decomposition product content value detected by the SF6 gas decomposition product transmitter 51, and calculate the micro-water content value of the SF6 gas in the GIS equipment based on the gas pressure value, gas temperature value and gas humidity value.

[0104] Please refer to Figure 5, the intelligent microprocessor 606 of the control circuit board 60 issues a closing command to the solenoid valve 2323, at which time the gas between the GIS equipment gas multi-parameter state monitoring device for preventing malfunction and the GIS equipment 8 is disconnected. The intelligent microprocessor 606 of the control circuit board 60 issues an opening command to the heater 401 of the gas regulating component 40. The gas in the gas regulating component 40 will enter the reflow zone as the temperature rises. When the temperature sensor 402 detects that the gas temperature in the gas regulating component 40 rises to a preset value, the intelligent microprocessor 606 of the control circuit board 60 issues a closing command to the heater 401 of the gas regulating component 40.

[0105] Step S200, close the solenoid valve 23, control the gas regulating component 40 to heat the gas, and when the real-time temperature value detected by the temperature sensor 402 rises to a first preset temperature threshold, close the gas regulating component 40.

[0106] Step S300, detecting the real-time temperature value of the temperature sensor 402, when the real-time temperature value drops to the second temperature threshold, obtaining again the trace water content value of the SF6 gas in the GIS equipment and the gas decomposition product content value detected by the SF6 gas decomposition product transmitter 51.

[0107] Step S400, comparing the trace water content values ​​and gas decomposition product content values ​​obtained twice before and after, if they are consistent, confirming that the trace water content value and gas decomposition product content value detected by the anti-malfunction GIS equipment gas multi-parameter state monitoring device are true values.

[0108] In the next detection cycle, the above steps are repeated to detect and compare the micro-water content value and gas decomposition product content value of SF6 gas in the GIS equipment to determine whether the detection result is accurate.

[0109] The embodiment of the present invention aims to protect a multi-parameter gas status monitoring device for GIS equipment to prevent misoperation and its control method, the monitoring device includes: a shell, a partition area, a recirculation area, a heat insulation area, a detection area, a gas density relay to prevent misoperation and a control component; the partition area, the recirculation area, the heat insulation area and the detection area are closed areas arranged inside the shell; the partition area is provided with a solenoid valve, which is connected to the GIS equipment and the recirculation area gas path respectively; the recirculation area is connected to the gas regulating component of the heat insulation area, the micro-water transmitter of the detection area and the SF6 gas decomposition product transmitter gas path respectively; the gas density relay to prevent misoperation is located outside the shell and is connected to the recirculation area gas path; the control component is electrically connected to the solenoid valve, the micro-water transmitter, the SF6 gas decomposition product transmitter, the temperature sensor in the gas regulating component and the GIS equipment control platform respectively, to detect the density, micro-water content value and decomposition product content value of SF6 gas in the GIS equipment in real time. The above technical scheme has the following effects:

[0110] 1. Improve the accuracy of online monitoring data by real-time online detection of the density, trace water and decomposition content of SF6 gas in GIS equipment;

[0111] 2. By connecting the anti-false operation micro switch of the anti-false operation component of the airtight relay and the micro switch of the pressure detection component in series in the circuit, the counterweight on the anti-false operation component is forced to move down to the anti-false operation position, cutting off the alarm contact signal or the locking contact signal, thereby improving the accuracy and reliability of online monitoring and ensuring the safety of the power supply system.

[0112] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A multi-parameter gas status monitoring device for GIS equipment to prevent malfunction, characterized in that: include: A housing, a partition area (2), a reflow area (3), a heat insulation area (4), a detection area (5), an anti-false operation gas density relay (1), and a control component; The partition area (2), the reflow area (3), the heat insulation area (4) and the detection area (5) are closed areas arranged inside the shell; The isolation zone (2) is provided with a solenoid valve (23), and the solenoid valve (23) is respectively connected to the GIS equipment and the gas path of the reflow zone (3); The reflux zone (3) is gas-circuit-connected with the gas regulating assembly (40) of the heat-insulating zone (4), the micro-water transmitter (50) of the detection zone (5), and the SF6 gas decomposition product transmitter (51); The anti-malfunction gas density relay (1) is located outside the housing and is in gas communication with the recirculation zone (3); The control component is electrically connected to the solenoid valve (23), the micro-water transmitter (50), the SF6 gas decomposition product transmitter (51), the temperature sensor (402) in the gas regulating component (40) and the GIS equipment control platform, respectively, to detect the density, micro-water content value and decomposition product content value of the SF6 gas in the GIS equipment in real time.

2. The gas multi-parameter state monitoring device for GIS equipment to prevent malfunction according to claim 1 is characterized in that: The side wall of the reflow zone (3) is also provided with a gas supply joint (36).

3. The gas multi-parameter state monitoring device for GIS equipment to prevent malfunction according to claim 1 is characterized in that: A heat insulation board (41) is provided between the heat insulation area (4) and the detection area (5).

4. The gas multi-parameter state monitoring device for preventing malfunction of GIS equipment according to claim 1 is characterized in that: Also includes: Control area (6); The control component is located inside the control area (6); An insulating plate (61) is provided between the control area (6) and the detection area (5).

5. The gas multi-parameter state monitoring device for GIS equipment to prevent malfunction according to claim 1 is characterized in that: The types of the micro-water transmitter (50) include: capacitive type, cold mirror type, infrared type, conductive type, microwave type, sonic type or optical type; Preferably, the type of the micro-water transmitter (50) is capacitive.

6. The gas multi-parameter state monitoring device for GIS equipment to prevent malfunction according to claim 1 is characterized in that: The types of the SF6 gas decomposition product transmitter (51) include: thermal conductivity type, infrared type, electrochemical type, gas chromatography type, mass spectrometry type or photoacoustic type; Preferably, the SF6 gas decomposition product transmitter (51) is of infrared type.

7. The gas multi-parameter state monitoring device for GIS equipment to prevent malfunction according to claim 1 is characterized in that: The types of the solenoid valve (23) include: an electric ball valve, an electric butterfly valve, an electric regulating valve, an electric gate valve or an electric stop valve.

8. The gas multi-parameter state monitoring device for GIS equipment to prevent malfunction according to claim 1 is characterized in that: The types of the gas regulating assembly (40) include: heat tracing regulation, piston regulation, bellows regulation or air bag regulation; Preferably, the gas regulating component (40) is of the type of heat tracing regulation.

9. The gas multi-parameter state monitoring device for GIS equipment to prevent malfunction according to any one of claims 1 to 8, characterized in that: The anti-malfunction gas density relay (1) comprises: a closed housing, and a pressure detection component (11) and an anti-malfunction component (10) arranged inside the closed housing; When the GIS device is opened / closed or subjected to vibration, the anti-malfunction component (10) switches the anti-malfunction microswitch state by means of the different movement trends of the counterweights of different weights when subjected to vibration, thereby disconnecting the signal transmission path between the pressure detection component (11) and the GIS device control platform, thereby preventing the pressure detection component (11) from sending a false alarm signal and / or a locking signal to the GIS device control platform.

10. The gas multi-parameter state monitoring device for GIS equipment to prevent malfunction according to claim 9, characterized in that: The anti-misoperation component (10) comprises: a first anti-misoperation unit (101) and a second anti-misoperation unit (102); The first anti-misoperation unit (101) is electrically connected to the signal alarm unit of the pressure detection component (11) and the GIS equipment control platform respectively. When the GIS equipment is opened / closed or subjected to vibration, the anti-misoperation micro switch state is switched by the different movement trends of the counterweight blocks of different weights when subjected to vibration, thereby disconnecting the alarm signal transmission path between the pressure detection component (11) and the GIS equipment control platform; The second anti-malfunction unit (102) is electrically connected to the locking signal unit of the pressure detection component (11) and the GIS equipment control platform respectively. When the GIS equipment is opened / closed or subjected to vibration, the anti-malfunction micro switch state is switched by the different movement trends of the counterweight blocks of different weights when subjected to vibration, thereby disconnecting the locking signal transmission path between the pressure detection component (11) and the GIS equipment control platform.

11. The gas multi-parameter state monitoring device for GIS equipment to prevent malfunction according to claim 10, characterized in that: The anti-misoperation component (10) further comprises: a third clamping plate (105), a fourth clamping plate (106), a fifth clamping plate (107), an intermediate connecting shaft (104) and a limiting shaft (103); the intermediate connecting shaft (104) and the limiting shaft (103) respectively pass through the third clamping plate (105), the first anti-misoperation unit (101), the fourth clamping plate (106), the second anti-misoperation unit (102) and the fifth clamping plate (107) in sequence.

12. The gas multi-parameter state monitoring device for GIS equipment to prevent malfunction according to claim 11, characterized in that: The first anti-misoperation unit (101) comprises: a first counterweight (1010), a first connecting rod (1014), a first anti-misoperation microswitch (1015), a first anti-misoperation swing piece (1016) and a first counterweight screw (1017); the first connecting rod (1014) is arranged between the third clamping plate (105) and the fourth clamping plate (106) through the intermediate connecting shaft (104); the first counterweight (1010) is arranged above one end of the first connecting rod (1014); the first counterweight screw (1017) is fixed to the other end of the first connecting rod (1014); the first counterweight screw (1017) is flexibly connected to the first anti-misoperation swing piece (1016); the weight of the first counterweight (1010) is greater than that of the first counterweight screw (1017); and the first anti-misoperation microswitch (1015) is connected in series with the first microswitch of the pressure detection component (11); The second anti-misoperation unit (102) comprises: a second counterweight (1020), a second connecting rod (1024), a second anti-misoperation microswitch (1025), a second anti-misoperation swing piece (1026) and a second counterweight screw (1027); the second connecting rod (1024) is arranged between the fourth clamping plate (106) and the fifth clamping plate (107) through the intermediate connecting shaft (104); the second counterweight (1020) is arranged above one end of the second connecting rod (1024); the second counterweight screw (1027) is fixed to the other end of the second connecting rod (1024); the second counterweight screw (1027) is flexibly connected to the second anti-misoperation swing piece (1026); the weight of the second counterweight (1020) is greater than that of the second counterweight screw (1027); and the second anti-misoperation microswitch (1025) is connected in series with the second microswitch of the pressure detection component (11); When the GIS device is operating normally, the first anti-misoperation swing piece (1016) is respectively in contact with the first counterweight screw (1017) and the limit shaft (103), and the first anti-misoperation microswitch (1015) is in an on state. When the GIS device is opened / closed or subjected to vibration, the first counterweight block (1010) moves downward, and the first counterweight screw (1017) and the first anti-misoperation swing piece (1016) are driven to rise in sequence through the first connecting rod (1014). The first anti-misoperation swing piece (1016) is disconnected from the limit shaft (103) and the switch contact of the first anti-misoperation microswitch (1015), so that the first anti-misoperation microswitch (1015) is switched to an off state. When the GIS device is operating normally, the second anti-misoperation swing piece (1026) is respectively in contact with the second counterweight screw (1027) and the limit shaft (103), so that the second anti-misoperation microswitch (1025) is in an on state. When the GIS device is opened / closed or subjected to vibration, the second counterweight block (1020) moves downward, and drives the second counterweight screw (1027) and the second anti-misoperation swing piece (1026) to rise in turn through the second connecting rod (1024). The second anti-misoperation swing piece (1026) is disengaged from the limit shaft (103) and the switch contact of the second anti-misoperation microswitch (1025), so that the second anti-misoperation microswitch (1025) is switched to an off state.

13. The gas multi-parameter state monitoring device for GIS equipment to prevent malfunction according to claim 12, characterized in that: The first anti-misoperation assembly (10) further comprises: a first return spring (1011), a first upper base plate (1012) and a first lower base plate (1013); two ends of the first counterweight block (1010) are respectively connected to the first upper base plate (1012) and the first lower base plate (1013); the first return spring (1011) is sleeved on the first counterweight block (1010); two ends of the first return spring (1011) are respectively connected to the first upper base plate (1012) and the first lower base plate (1013); The second anti-misoperation component (10) further comprises: a second return spring (1021), a second upper base plate (1022) and a second lower base plate (1023); two ends of the second counterweight block (1020) are respectively connected to the second upper base plate (1022) and the second lower base plate (1023); the second return spring (1021) is sleeved on the second counterweight block (1020); and two ends of the second return spring (1021) are respectively connected to the second upper base plate (1022) and the second lower base plate (1023).

14. The gas multi-parameter state monitoring device for GIS equipment to prevent malfunction according to claim 12 or 13, characterized in that: The first anti-malfunction assembly (10) further comprises: a first acceleration steel rope (1018), the first counterweight screw (1017) and the first anti-malfunction swing piece (1016) being connected via the first acceleration steel rope (1018); The second anti-misoperation component (10) further comprises: a second acceleration steel rope (1028), and the second counterweight screw (1027) and the second anti-misoperation swing piece (1026) are connected via the second acceleration steel rope (1028).

15. A control method for a multi-parameter gas status monitoring device for GIS equipment to prevent malfunction, characterized in that: The steps include: Obtaining a gas pressure value, a gas temperature value and a gas humidity value detected by a micro-water transmitter (50), obtaining a gas decomposition product content value detected by an SF6 gas decomposition product transmitter (51), and calculating a micro-water content value of the SF6 gas in the GIS device based on the gas pressure value, the gas temperature value and the gas humidity value; The solenoid valve (23) is closed, and the gas regulating component (40) is controlled to heat the gas, and when the real-time temperature value detected by the temperature sensor (402) rises to a first preset temperature threshold, the gas regulating component (40) is closed; detecting a real-time temperature value of the temperature sensor (402), and when the real-time temperature value drops to a second temperature threshold, obtaining again a value of the micro-water content of the SF6 gas in the GIS equipment and a value of the gas decomposition product content detected by the SF6 gas decomposition product transmitter (51); Compare the trace water content value and the gas decomposition product content value obtained twice before and after. If they are consistent, it is confirmed that the trace water content value and the gas decomposition product content value detected by the anti-malfunction GIS equipment gas multi-parameter status monitoring device are true values.

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