Gas leakage treatment device and method for GIS (Gas Insulated Switchgear) flange

Abstract

The invention relates to a GIS flange air leakage processing device which comprises a sleeve, the sleeve is located in a GIS flange, a micro-vibration sensor is installed on the GIS flange, a cable is arranged in the sleeve, the lower end of the cable is connected with a micro-change pressure sensor, a pressure gauge is installed in front of the upper end of the sleeve, and the pressure gauge is connected with the micro-change pressure sensor through the cable. A data wireless remote transmitter is mounted on the right side of the pressure gauge; the left side of the upper end of the sleeve is provided with a blocking active processing device, and the lower end of the blocking active processing device is connected with a multi-branch pipe. A mounting flange clamp is mounted outside the GIS flange; the device has the advantages of reasonable structure, convenience in use, active treatment of air leakage detection and guarantee of stable and reliable operation.

Description

Technical Field

[0001] The invention belongs to the technical field of electrical equipment, and in particular relates to a GIS flange air leakage treatment device and a treatment method. Background Art

[0002] GIS equipment, namely sulfur hexafluoride enclosed combined electrical equipment, is internationally known as "gas insulated switchgear". It integrates the primary equipment in a substation except the transformer, including circuit breakers, disconnectors, fast (grounding) switches, current transformers, voltage transformers, lightning arresters, busbars ( Three-phase or single-phase), connecting pipes, transition elements and cable terminals are all combined in a fully enclosed metal shell through optimized design. The medium used for insulation and arc extinguishing in the shell is 0.4-0.6MPa SF6 gas. During the actual operation and use of GIS, the gas-insulated metal-enclosed switchgear will leak SF6 insulating gas at the flange surface due to cracking of the basin insulator, rusting of the flange, failure of the sealing ring, etc. The monitoring of GIS gas leakage mainly depends on the gas pressure gauge of the gas chamber. However, the gas pressure gauge is not sensitive to slight gas changes. When the parameters of the gas pressure gauge change, the gas leakage is already serious. The current gas pressure gauge still relies on manual reading and abnormality detection, which has poor real-time performance and low efficiency. In addition, the number of gas-insulated metal-enclosed switchgear used in substations is huge, which greatly increases the work pressure of maintenance personnel. Therefore, it is very necessary to provide a GIS flange leakage treatment device and treatment method with reasonable structure, convenient use, active leakage detection and guarantee of stable and reliable operation. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a GIS flange leakage treatment device and treatment method which has a reasonable structure, is easy to use, actively handles leakage detection, and ensures stable and reliable operation.

[0004] The objective of the present invention is achieved as follows: a GIS flange leakage processing device comprises a sleeve, the sleeve is located inside the GIS flange, a micro-vibration sensor is installed on the GIS flange, a cable is arranged inside the sleeve, a micro-change pressure sensor is connected to the lower end of the cable, a pressure gauge is installed in front of the upper end of the sleeve, the pressure gauge is connected to the micro-change pressure sensor through a cable, and a data wireless transmitter is installed on the right side of the pressure gauge; an active plugging processing device is arranged on the left side of the upper end of the sleeve, and a multi-branch pipe with multiple branch pipes is connected to the lower end of the active plugging processing device; a flange mounting fixture is installed on the outside of the GIS flange.

[0005] The active plugging processing equipment includes a "U"-shaped mounting plate fixedly connected to the upper end of the casing, a plugging agent propulsion device is arranged above the mounting plate, an air valve is arranged in front of the plugging agent propulsion device, a spray gun connected to the plugging agent propulsion device is arranged below the mounting plate, and the spray gun is connected to the multi-branch pipes through the muzzle at the lower end; a controller is arranged on the left side of the mounting plate.

[0006] A shielding ring is arranged inside the mounting flange fixture, a sealing ring is arranged inside the shielding ring, the sealing ring is located outside the GIS flange and the sealing ring is in contact with the GIS flange.

[0007] The sealing ring includes a sealing sleeve, a plurality of through holes are evenly arranged on the inner circumference of the sealing sleeve, and a sealing tube is arranged inside the through hole. One end of the sealing tube inside the sealing ring is flush with the through hole opening, and the other end outside the sealing ring protrudes out of the through hole opening. The sealing tube is fixed inside the through hole opening by fixing bolts, and the end of the sealing tube protruding from the through hole opening is connected to the shielding ring.

[0008] The shielding ring includes a shielding sleeve which is sleeved on the outside of the sealing ring. A shielding head is installed at one end of the shielding sleeve. The shielding head is connected to the shielding sleeve through a plurality of supporting frames. A plurality of flow holes penetrating the shielding sleeve are arranged inside the shielding head. The flow holes are respectively connected one by one with a plurality of branch pipes of the multi-branch pipes.

[0009] Each of the flow holes is tightly connected to a plurality of blocking tubes, and the spaces formed between the blocking tubes and the inner wall of the shielding sleeve are filled with fillers, so that the blocking ring is tightly combined with the shielding ring.

[0010] The mounting flange fixture comprises an upper jaw and a lower jaw of an arc-shaped structure, one end of each of the upper jaw and the lower jaw is provided with a hinged portion, the hinged portion is movably connected via a pin shaft, and the other ends of the upper jaw and the lower jaw are respectively provided with a limiting portion and a pin seat portion.

[0011] A square nut is provided on the inner side of the pin seat portion, and the bottom of the square nut is movably connected to the pin seat portion through a pin shaft. An arc buckle is provided above the upper jaw, and a handle is installed on the arc buckle. The handle is fixed to the arc buckle by screws, and a pull rod is provided on the inner side of one end of the arc buckle close to the limiting portion. The pull rod is connected to the square nut, and the pull rod and the square nut are both in the inner space between the limiting portion and the pin seat portion.

[0012] A method for treating a GIS flange gas leakage treatment device, using the GIS flange gas leakage treatment device as described above, to implement GIS equipment gas detection and GIS flange gas leakage detection and treatment operations, comprising the following steps: Step 1: Put the shielding ring and the blocking ring on the outside of the GIS flange, set a cover on the outside of the GIS flange to form a closed cavity, and then use the flange fixture to tightly connect the shielding ring and the blocking ring to the GIS flange; Step 2: Install the micro-vibration sensor on the GIS flange, and pass the casing, cable and micro-change pressure sensor through the GIS flange, so that the micro-change pressure sensor enters the air chamber of the GIS equipment to monitor the internal gas pressure changes in real time; Step 3: The micro-change pressure sensor is connected to the pressure gauge to monitor the pressure data of the internal gas. The micro-vibration sensor is connected to the controller to monitor the vibration data of the GIS flange. The data information is sent to the cloud server through the data wireless transmitter. The cloud server sends the analysis results to the controller to facilitate real-time monitoring of the leakage of the GIS flange and active, accurate and rapid sealing of the leaking GIS flange to avoid unnecessary losses.

[0013] Beneficial effects of the present invention: The present invention is a GIS flange leakage treatment device and treatment method. During use, a shielding ring and a sealing ring are mounted on the outside of the GIS flange, and a closed cavity is formed on the outer side of the GIS flange position. Then, the shielding ring and the sealing ring are tightly connected to the GIS flange by installing a flange clamp. The shielding ring isolates and protects the outer side of the GIS flange that is prone to leakage to avoid air pollution when gas leaks, and at the same time avoids the SF6 gas from contacting with moisture in the air when the gas just leaks and generating corrosive gas that causes secondary damage to the flange; the sealing ring quickly seals the leaking GIS flange to avoid continuous leakage of the GIS flange; the micro-vibration sensor is installed on the GIS flange, and the casing, cable and micro-change pressure sensor are installed. The micro-variation pressure sensor passes through the GIS flange and enters the air chamber of the GIS equipment to monitor the internal gas pressure changes in real time; the micro-variation pressure sensor is connected to the pressure gauge to monitor the pressure data of the internal gas; the micro-vibration sensor is connected to the controller to monitor the vibration data of the GIS flange; the data information is sent to the cloud server through the data wireless transmitter, and the cloud server sends the analysis result to the controller, so as to realize the real-time monitoring of the leakage of the GIS flange, and actively control the plugging active processing equipment through the controller to actively, accurately and quickly plug the leaking GIS flange to avoid unnecessary losses; the present invention has the advantages of reasonable structure, easy use, active leakage detection and processing, and stable and reliable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the present invention.

[0015] Figure 2 It is a schematic structural diagram of the active plugging treatment device of the present invention.

[0016] Figure 3 It is a top view of the mounting flange fixture of the present invention and its internal structure.

[0017] Figure 4 It is a three-dimensional diagram of the mounting flange clamp of the present invention.

[0018] Figure 5 It is an exploded view of the mounting flange clamp of the present invention.

[0019] Figure 6 A schematic diagram of the structure of the shielding ring of the present invention Figure 1 .

[0020] Figure 7 A schematic diagram of the structure of the shielding ring of the present invention Figure 2 .

[0021] Figure 8 It is a schematic structural diagram of the blocking ring of the present invention.

[0022] In the figure: 1, sleeve 20, micro-vibration sensor 2, cable 3, micro-change pressure sensor 4, pressure gauge 5, data wireless remote transmitter 6, active plugging processing equipment 61, mounting plate 62, plugging agent propulsion device 63, air valve 64, spray gun 65, muzzle 66, controller 7, multi-branch pipe 8, mounting flange clamp 81, upper jaw 82, lower jaw 83, hinged part 84, square nut 85, pull rod 86, arc buckle 87, handle 88, pin shaft 89, screw 801, limit part 802, pin seat part 9, shielding ring 91, shielding sleeve 92, shielding head 93, support frame 94, flow hole 10, plugging ring 101, plugging sleeve 102, through hole 103, plugging pipe 104, fixing bolt 11, filler. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings. Example 1

[0024] like Figure 1-8 As shown, a GIS flange leakage processing device comprises a sleeve 1, wherein the sleeve 1 is located inside the GIS flange, and a micro-vibration sensor 20 is installed on the GIS flange, a cable 2 is arranged inside the sleeve 1, and a micro-change pressure sensor 3 is connected to the lower end of the cable 2, a pressure gauge 4 is installed in front of the upper end of the sleeve 1, and the pressure gauge 4 is connected to the micro-change pressure sensor 3 through the cable 2, and a data wireless transmitter 5 is installed on the right side of the pressure gauge 4; a plugging active processing device 6 is arranged on the left side of the upper end of the sleeve 1, and a multi-branch pipe 7 with multiple branch pipes is connected to the lower end of the plugging active processing device 6; a mounting flange fixture 8 is installed on the outside of the GIS flange.

[0025] The active plugging processing equipment 6 includes a "U"-shaped mounting plate 61 fixedly connected to the upper end of the casing 1, a plugging agent propulsion device 62 is arranged above the mounting plate 61, an air valve 63 is arranged in front of the plugging agent propulsion device 62, a spray gun 64 connected to the plugging agent propulsion device 62 is arranged below the mounting plate 61, and the spray gun 64 is connected to the multi-branch pipe 7 through the muzzle 65 at the lower end; a controller 66 is arranged on the left side of the mounting plate 61.

[0026] A shielding ring 9 is arranged inside the mounting flange fixture 8 , and a sealing ring 10 is arranged inside the shielding ring 9 . The sealing ring 10 is located outside the GIS flange and the sealing ring 10 is in contact with the GIS flange.

[0027] The blocking ring 10 includes a blocking sleeve 101, and a plurality of through holes 102 are evenly arranged on the inner circumference of the blocking sleeve 101. A blocking tube 103 is arranged inside the through hole 102. One end of the blocking tube 103 inside the blocking ring 10 is flush with the through hole 102, and the other end outside the blocking ring 10 extends out of the through hole 102. The blocking tube 103 is fixed inside the through hole 102 by a fixing bolt 104, and the end of the blocking tube 103 extending out of the through hole 102 is connected to the shielding ring 9.

[0028] The shielding ring 9 includes a shielding sleeve 91 which is sleeved on the outside of the sealing ring 10, and a shielding head 92 is installed at one end of the shielding sleeve 91. The shielding head 92 is connected to the shielding sleeve 91 through a plurality of supporting frames 93. The shielding head 92 is provided with a plurality of flow holes 94 which penetrate the shielding sleeve 91. The flow holes 94 are respectively connected one by one with a plurality of branch pipes of the multi-branch pipe 7.

[0029] Each of the flow holes 94 is tightly connected to a plurality of blocking tubes 103 , and the spaces formed between the blocking tubes 103 and the inner wall of the shielding sleeve 91 are filled with fillers 11 , so that the blocking ring 10 is tightly combined with the shielding ring 9 .

[0030] In this embodiment, the micro-variation pressure sensor is connected to the pressure gauge to monitor the pressure data of the internal gas in real time, and the micro-vibration sensor is connected to the controller to monitor the vibration data of the GIS flange in real time, collect vibration signals for analysis and judgment of whether the GIS equipment is leaking, and the data information is sent to the cloud server through the data wireless remote transmitter, and the cloud server sends the analysis results to the controller, so as to realize the real-time monitoring of the leakage of the GIS flange. If the data monitored by the micro-variation pressure sensor and / or the micro-vibration sensor is abnormal, the data wireless remote transmitter sends the abnormal data information to the cloud server, and the cloud server sends it to the monitoring terminal to ensure that the monitoring personnel find the abnormality at the first time, so as to formulate corresponding countermeasures in time and realize accurate judgment of whether the GIS equipment is leaking; at the same time, the controller actively controls the active plugging processing device to actively, accurately and quickly plug the leaking GIS flange to avoid unnecessary losses. Since the active plugging processing device is connected to multiple flow holes through multiple branch pipes, and each flow hole is connected to multiple plugging pipes respectively, rapid glue filling and plugging can be realized. On the one hand, it can realize uniform circumferential plugging of the flange to prevent the problem of poor plugging effect caused by uneven filling of sealant, and on the other hand, multi-channel simultaneous plugging can also greatly improve the plugging speed and efficiency.

[0031] The mounting flange fixture 8 comprises an upper jaw 81 and a lower jaw 82 of an arc-shaped structure, one end of each of the upper jaw 81 and the lower jaw 82 is provided with a hinged portion 83, the hinged portion 83 is movably connected via a pin shaft 88, and the other ends of the upper jaw 81 and the lower jaw 82 are respectively provided with a limiting portion 801 and a pin seat portion 802.

[0032] A square nut 84 is provided on the inner side of the pin seat portion 802, and the bottom of the square nut 84 is movably connected to the pin seat portion 802 through a pin shaft 88. An arc buckle 86 is provided above the upper jaw 81, and a handle 87 is installed on the arc buckle 86. The handle 87 is fixed on the arc buckle 86 by a screw 89. A pull rod 85 is provided on the inner side of one end of the arc buckle 86 close to the limiting portion 801. The pull rod 85 is connected to the square nut 84, and the pull rod 85 and the square nut 84 are both in the inner space between the limiting portion 801 and the pin seat portion 802.

[0033] The present invention discloses a GIS flange leakage treatment device and treatment method. During use, a shielding ring 9 and a sealing ring 10 are mounted on the outside of the GIS flange, and a closed cavity is formed on the outside of the GIS flange. Then, the shielding ring 9 and the sealing ring 10 are tightly connected to the GIS flange by installing a flange clamp 8. The shielding ring 9 isolates and protects the outside of the GIS flange that is prone to leakage to avoid air pollution when gas leaks, and at the same time avoids secondary damage to the flange caused by corrosive gas generated by the contact of SF6 gas with moisture in the air when the gas just leaks; the sealing ring 10 quickly seals the GIS flange that has leakage to avoid continuous leakage of the GIS flange; the micro-vibration sensor 20 is installed on the GIS flange, and the casing 1, the cable 2 and the micro-change pressure sensor 3 are passed through the GIS The flange allows the micro-change pressure sensor 3 to enter the air chamber of the GIS equipment to monitor the internal gas pressure changes in real time; the micro-change pressure sensor 3 is connected to the pressure gauge 4, and the micro-change pressure sensor 3 monitors the pressure data of the internal gas; the micro-vibration sensor 20 is connected to the controller 66, and the micro-vibration sensor 20 monitors the vibration data of the GIS flange. The data information is sent to the cloud server through the data wireless remote transmitter 5, and the cloud server sends the analysis result to the controller 66, which is convenient for realizing real-time monitoring of the leakage of the GIS flange, and actively controlling the plugging active processing device 6 through the controller 66 to actively, accurately and quickly plug the leaking GIS flange to avoid unnecessary losses; the present invention has the advantages of reasonable structure, easy use, active leakage detection and processing, and stable and reliable operation. Example 2

[0034] like Figure 1-8 As shown, a method for treating a GIS flange gas leakage treatment device adopts the GIS flange gas leakage treatment device as described above to realize GIS equipment gas detection and GIS flange gas leakage detection and treatment operations, including the following steps: Step 1: Put the shielding ring and the blocking ring on the outside of the GIS flange, set a cover on the outside of the GIS flange to form a closed cavity, and then use the flange fixture to tightly connect the shielding ring and the blocking ring to the GIS flange; Step 2: Install the micro-vibration sensor on the GIS flange, and pass the casing, cable and micro-change pressure sensor through the GIS flange, so that the micro-change pressure sensor enters the air chamber of the GIS equipment to monitor the internal gas pressure changes in real time; Step 3: The micro-change pressure sensor is connected to the pressure gauge to monitor the pressure data of the internal gas. The micro-vibration sensor is connected to the controller to monitor the vibration data of the GIS flange. The data information is sent to the cloud server through the data wireless transmitter. The cloud server sends the analysis results to the controller to facilitate real-time monitoring of the leakage of the GIS flange and active, accurate and rapid sealing of the leaking GIS flange to avoid unnecessary losses.

[0035] The present invention discloses a GIS flange leakage treatment device and treatment method. During use, a shielding ring 9 and a sealing ring 10 are mounted on the outside of the GIS flange, and a closed cavity is formed on the outside of the GIS flange. Then, the shielding ring 9 and the sealing ring 10 are tightly connected to the GIS flange by installing a flange clamp 8. The shielding ring 9 isolates and protects the outside of the GIS flange that is prone to leakage to avoid air pollution when gas leaks, and at the same time avoids secondary damage to the flange caused by corrosive gas generated by the contact of SF6 gas with moisture in the air when the gas just leaks; the sealing ring 10 quickly seals the GIS flange that has leakage to avoid continuous leakage of the GIS flange; the micro-vibration sensor 20 is installed on the GIS flange, and the casing 1, the cable 2 and the micro-change pressure sensor 3 are passed through the GIS The flange allows the micro-change pressure sensor 3 to enter the air chamber of the GIS equipment to monitor the internal gas pressure changes in real time; the micro-change pressure sensor 3 is connected to the pressure gauge 4, and the micro-change pressure sensor 3 monitors the pressure data of the internal gas; the micro-vibration sensor 20 is connected to the controller 66, and the micro-vibration sensor 20 monitors the vibration data of the GIS flange. The data information is sent to the cloud server through the data wireless remote transmitter 5, and the cloud server sends the analysis result to the controller 66, which is convenient for realizing real-time monitoring of the leakage of the GIS flange, and actively controlling the plugging active processing device 6 through the controller 66 to actively, accurately and quickly plug the leaking GIS flange to avoid unnecessary losses; the present invention has the advantages of reasonable structure, easy use, active leakage detection and processing, and stable and reliable operation.

Claims

1. A GIS flange leakage treatment device, comprising a sleeve, the sleeve is located inside the GIS flange, and a micro-vibration sensor is installed on the GIS flange, characterized in that: A cable is arranged inside the casing, a micro-variation pressure sensor is connected to the lower end of the cable, a pressure gauge is installed in front of the upper end of the casing, the pressure gauge is connected to the micro-variation pressure sensor through the cable, and a data wireless transmitter is installed on the right side of the pressure gauge; an active plugging processing device is arranged on the left side of the upper end of the casing, and a multi-branch pipe with multiple branch pipes is connected to the lower end of the active plugging processing device; a mounting flange clamp is installed on the outside of the GIS flange.

2. A GIS flange air leakage treatment device as claimed in claim 1, characterized in that: The active plugging processing equipment includes a "U"-shaped mounting plate fixedly connected to the upper end of the casing, a plugging agent propulsion device is arranged above the mounting plate, an air valve is arranged in front of the plugging agent propulsion device, a spray gun connected to the plugging agent propulsion device is arranged below the mounting plate, and the spray gun is connected to the multi-branch pipes through the muzzle at the lower end; a controller is arranged on the left side of the mounting plate.

3. A GIS flange air leakage treatment device as claimed in claim 2, characterized in that: A shielding ring is arranged inside the mounting flange fixture, a sealing ring is arranged inside the shielding ring, the sealing ring is located outside the GIS flange and the sealing ring is in contact with the GIS flange.

4. A GIS flange air leakage treatment device as claimed in claim 3, characterized in that: The sealing ring includes a sealing sleeve, a plurality of through holes are evenly arranged on the inner circumference of the sealing sleeve, and a sealing tube is arranged inside the through hole. One end of the sealing tube inside the sealing ring is flush with the through hole opening, and the other end outside the sealing ring protrudes out of the through hole opening. The sealing tube is fixed inside the through hole opening by fixing bolts, and the end of the sealing tube protruding from the through hole opening is connected to the shielding ring.

5. A GIS flange air leakage treatment device as claimed in claim 4, characterized in that: The shielding ring includes a shielding sleeve which is sleeved on the outside of the sealing ring. A shielding head is installed at one end of the shielding sleeve. The shielding head is connected to the shielding sleeve through a plurality of supporting frames. A plurality of flow holes penetrating the shielding sleeve are arranged inside the shielding head. The flow holes are respectively connected one by one with a plurality of branch pipes of the multi-branch pipes.

6. A GIS flange air leakage treatment device as claimed in claim 5, characterized in that: Each of the flow holes is tightly connected to a plurality of blocking tubes, and the spaces formed between the blocking tubes and the inner wall of the shielding sleeve are filled with fillers, so that the blocking ring is tightly combined with the shielding ring.

7. A GIS flange air leakage treatment device as claimed in claim 5, characterized in that: The mounting flange fixture comprises an upper jaw and a lower jaw of an arc-shaped structure, one end of each of the upper jaw and the lower jaw is provided with a hinged portion, the hinged portion is movably connected via a pin shaft, and the other ends of the upper jaw and the lower jaw are respectively provided with a limiting portion and a pin seat portion.

8. A GIS flange air leakage treatment device as claimed in claim 7, characterized in that: A square nut is provided on the inner side of the pin seat portion, and the bottom of the square nut is movably connected to the pin seat portion through a pin shaft. An arc buckle is provided above the upper jaw, and a handle is installed on the arc buckle. The handle is fixed to the arc buckle by screws, and a pull rod is provided on the inner side of one end of the arc buckle close to the limiting portion. The pull rod is connected to the square nut, and the pull rod and the square nut are both in the inner space between the limiting portion and the pin seat portion.

9. A method for treating a GIS flange gas leakage treatment device, using the GIS flange gas leakage treatment device as described in any one of claims 1 to 8 to realize GIS equipment gas detection and GIS flange gas leakage detection and treatment operations, characterized in that: The following steps are involved: Step 1: Put the shielding ring and the blocking ring on the outside of the GIS flange, set a cover on the outside of the GIS flange to form a closed cavity, and then use the flange fixture to tightly connect the shielding ring and the blocking ring to the GIS flange; Step 2: Install the micro-vibration sensor on the GIS flange, and pass the casing, cable and micro-change pressure sensor through the GIS flange, so that the micro-change pressure sensor enters the air chamber of the GIS equipment to monitor the internal gas pressure changes in real time; Step 3: The micro-change pressure sensor is connected to the pressure gauge to monitor the pressure data of the internal gas. The micro-vibration sensor is connected to the controller to monitor the vibration data of the GIS flange. The data information is sent to the cloud server through the data wireless transmitter. The cloud server sends the analysis results to the controller to facilitate real-time monitoring of the leakage of the GIS flange and active, accurate and rapid sealing of the leaking GIS flange to avoid unnecessary losses.

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