A GIS expansion joint deformation on-line monitoring device

Abstract

The application discloses a GIS telescopic joint deformation on-line monitoring device and relates to the technical field of telescopic joint deformation monitoring.The device comprises two ring sheet plates, two of which are provided with notches on top surfaces, two short columns are arranged on the right side of the left ring sheet plate, two long rods are respectively hinged to the right sides of the two short columns, and the two long rods penetrate and are slidingly installed on the left side of the right ring sheet plate; a strip shell is fixed to the inner wall of the notch of the right ring sheet plate, a pressure sensor is fixed to the right inner wall of the strip shell, and a spring two is fixed to the right side of the pressure sensor. The GIS telescopic joint body is pressed against the surface of the ring air bag, the air pressure sensor outputs the air pressure data in the ring air bag to a computer terminal, and thus the problem that the on-line monitoring device is difficult to monitor the bending amplitude of the GIS telescopic joint and the on-line monitoring device has poor monitoring effect on the deformation of the GIS telescopic joint is avoided.

Description

Technical Field

[0001] This invention relates to the field of expansion joint deformation monitoring technology, specifically to an online GIS expansion joint deformation monitoring device. Background Technology

[0002] GIS expansion joints are flexible connection structures installed on both sides of a metal bellows to balance the expansion and contraction forces of the metal bellows during thermal expansion and contraction, reducing the impact inside the metal bellows. The GIS expansion joint deformation online monitoring device monitors the displacement of the metal bellows expansion joint in real time to ensure the safe and stable operation of the metal bellows.

[0003] Patent CN221302304U discloses a wireless GIS busbar expansion joint deformation monitoring device, including an expansion joint deformation monitoring host installed between the first and second expansion joint flanges on the GIS busbar body. One end of the expansion joint deformation monitoring host is connected to a displacement sensor, which is connected to a universal joint via a top rod. The universal joint is connected to a first clamp, which is fixed to the first expansion joint flange. The other end of the expansion joint deformation monitoring host housing is fixed to the second expansion joint flange via a second clamp. When the expansion joint deforms, the entire expansion joint deformation monitoring host between the first and second expansion joint flanges operates in tandem. The displacement sensor monitors the deformation of the expansion joint, which, compared to manual inspection, allows for timely and effective monitoring of the expansion joint deformation status, eliminates human reading errors, improves reliability, and increases the work efficiency of maintenance personnel while reducing manpower and material maintenance costs.

[0004] The above-mentioned device also has the following problems: gas flows in the GIS expansion joint. When the gas temperature is high, the GIS expansion joint expands and when the gas temperature is low, the GIS expansion joint contracts. The online monitoring device monitors the expansion and contraction status of the GIS expansion joint in real time. However, the GIS expansion joint will deform and bend during the expansion and contraction process. The online monitoring device is not easy to monitor the bending range of the GIS expansion joint, which leads to bending damage of the GIS expansion joint and causes the online monitoring device to be ineffective in monitoring the deformation of the GIS expansion joint. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an online monitoring device for the deformation of GIS expansion joints, solving the problem that online monitoring devices are not easy to monitor the bending amplitude of GIS expansion joints, resulting in poor monitoring performance of GIS expansion joint deformation.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an online monitoring device for deformation of GIS expansion joints, comprising:

[0007] Two ring plates are provided, with notches on their top surfaces. Two short columns are provided on the right side of the left ring plate, and a long rod is hinged to the right side of each of the two short columns. The two long rods pass through and slide on the left side of the right ring plate. The left side of the GIS expansion joint body drives the left ring plate to move to the left, the left ring plate drives the short columns to move to the left, the short columns drive the long rods to move to the left, and the long rods slide to the left in the right ring plate.

[0008] A strip shell is fixed to the inner wall of the recess of the right annular plate. A pressure sensor is fixed to the right side of the inner wall of the strip shell. A second spring is fixed to the right side of the pressure sensor. A strip plate is fixed to the right end of the second spring. The outer wall of the strip plate is slidably connected to the inner wall of the strip shell. The left end of the strip plate is hinged to the inner wall of the recess of the left annular plate. The left annular plate drives the strip plate to move to the left. The strip plate slides to the left in the strip shell. The strip plate drives the second spring to move to the left. The second spring contracts and deforms. The second spring transmits pressure to the surface of the pressure sensor.

[0009] A short frame is fixed to the bottom surface of a strip plate. A ring plate is fixed to the bottom surface of the short frame. An annular airbag is fixed in the middle of the inner wall of the ring plate. An air outlet is provided on the bottom surface of the annular airbag. The air outlet passes through and is fixed to the bottom of the inner side of the ring plate. A pressure sensor is fixedly installed on the front of the air outlet. The pressure sensor is used to monitor the gas pressure inside the annular airbag in real time. The expansion joint of the GIS expansion joint body will contact the surface of the annular airbag. The expansion joint of the GIS expansion joint body deforms and squeezes the surface of the annular airbag.

[0010] The outer wall of the long rod is equipped with a swing head monitoring device, which is used to monitor the swing status of the left side of the GIS expansion joint.

[0011] According to the above technical solution, the two ring plates are fixed on both sides of the outer wall of the GIS expansion joint body, the expansion joint is provided in the middle of the GIS expansion joint body, and the connecting flanges are respectively provided on the left and right sides of the GIS expansion joint body.

[0012] According to the above technical solution, a circular plate is fixed to the right side of each of the two long rods, and a spring is fixed to the left side of each of the two circular plates. The left ends of the two springs are fixedly connected to the right side of the right annular plate. The two springs are respectively sleeved on the outside of the two long rods. Connecting blocks are fixed to the front and back of the annular plate, and the inner walls of the two connecting blocks are fixedly connected to the outer walls of the two long rods.

[0013] According to the above technical solution, the strip plate is located inside the lower part of the strip shell, the top surface of the strip plate has a notch, the ring plate is sleeved on the outside of the GIS expansion joint body, and the air pressure sensor is located below the ring plate.

[0014] According to the above technical solution, a telescopic deceleration device is provided on the right side of the strip plate. The telescopic deceleration device is located inside the strip shell and is used to slow down the telescopic speed of the GIS expansion joint.

[0015] According to the above technical solution, the head-swing monitoring device includes:

[0016] An arc plate, which is fixed to the left side of the outer wall of the two long rods;

[0017] A long shell, which penetrates and is fixed to the left side of the arc plate, has a tension sensing component fixed to the right side of the inner wall of the long shell, and a spring three fixed to the left side of the tension sensing component;

[0018] The long frame is slidably installed on the inner wall of the long shell. The right side of the long frame is fixedly connected to the left end of the spring three. A U-shaped frame is hinged to the left end of the long frame. The left side of the U-shaped frame is fixedly connected to the right side of the left ring plate. When the U-shaped frame rotates up or down, it pulls the long frame to move to the left. The long frame moves to the left within the long shell, and the long frame pulls the spring three to move to the left.

[0019] According to the above technical solution, the arc plate is located below the main body of the GIS expansion joint, the long shell is located in the middle of the right side of the arc plate, and the U-shaped frame is located below the main body of the GIS expansion joint.

[0020] According to the above technical solution, a U-shaped frame is fixed to the outer wall of the long frame, an L-shaped plate is fixed to the bottom surface of the U-shaped frame, a groove plate is fixed to the bottom surface of the long shell, a through-hole is opened on the left side of the groove plate, the inner wall of the through-hole of the groove plate slides in contact with the outer wall of the L-shaped plate, the U-shaped frame drives the L-shaped plate to move to the left, and the L-shaped plate slides to the left in the through-hole of the groove plate.

[0021] According to the above technical solution, the telescopic deceleration device includes:

[0022] A circular shell, which is fixed to the right side of the strip, and a threaded rod is rotatably installed on the inner wall of the circular shell;

[0023] A square hole block, which penetrates and is fixed to the left side of the inner wall of the strip shell, and the inner wall of the square hole block is threadedly connected to the outer wall of the threaded rod;

[0024] A rubber pad is fixed to the right end of a threaded rod. The threaded rod rotates in a circular shell, and the threaded groove of the threaded rod slides to the left in a square hole block. The threaded rod drives the rubber pad to rotate and move to the left.

[0025] According to the above technical solution, an I-shaped ring is fixed to the outer wall of the threaded rod, and a concave transverse plate is fixed to the top of the inside of the strip shell. The outer wall of the concave transverse plate is in sliding contact with the inner wall of the strip plate recess. A straight plate with a hole is slidably installed on the inner wall of the concave transverse plate. A circular hole is opened on the left side of the straight plate. The inner wall of the circular hole of the straight plate is rotatably connected to the inner wall of the I-shaped ring. The I-shaped ring drives the straight plate with the hole to move to the left, and the straight plate with the hole slides to the left in the concave transverse plate.

[0026] This invention provides an online monitoring device for the deformation of GIS expansion joints. It has the following beneficial effects:

[0027] (1) In this invention, the long rod slides to the left in the right ring plate, and the long rod drives the circular plate to move to the left. The long rod limits the deformation range of the expansion joint of the GIS expansion joint body. The strip plate slides to the left in the strip shell. The second spring transmits pressure to the surface of the pressure sensor. The pressure sensor sends data to the computer terminal and reports the expansion and contraction status of the expansion joint of the GIS expansion joint body in real time.

[0028] The connecting block moves synchronously to the left along with the long rod. The connecting block restricts the direction of the ring plate to the left. The deformation of the GIS expansion joint body compresses the surface of the ring airbag, and the gas inside the ring airbag is forced into the air outlet. The air pressure sensor outputs the air pressure data inside the ring airbag to the computer terminal, and reports the degree of bending of the GIS expansion joint body in real time. This prevents the online monitoring device from being unable to monitor the bending amplitude of the GIS expansion joint, which would result in poor monitoring effect of the online monitoring device on the deformation of the GIS expansion joint.

[0029] (2) When the left side of the GIS expansion joint body of the present invention is stretched and bent, the U-shaped frame is rotated upward or downward to pull the long frame to move to the left. The long frame pulls the spring three to move to the left. The tension of the spring three is transmitted to the tension sensing component, so that the operator can understand the deformation state of the GIS expansion joint body at the first time and prevent the monitoring of the GIS expansion joint body from being invisible when it is raised or lowered, which would cause the online monitoring device to be inaccurate. The L-shaped plate slides to the left in the through hole of the slot plate so that the L-shaped plate is supported below when the long frame moves to the left, avoiding deformation caused by the lack of support below when the long frame moves.

[0030] (3) The thread groove of the threaded rod of the present invention slides to the left in the square hole block. The rubber pad limits the distance the threaded rod moves to the left. The friction between the thread groove of the threaded rod and the square hole block reduces the extension speed of the GIS expansion joint body and prevents the GIS expansion joint body from being damaged by impact due to excessive extension speed. The I-shaped ring drives the hole straight plate to move to the left. The hole straight plate slides to the left in the concave horizontal plate, so that the hole straight plate cooperates with the I-shaped ring to support the threaded rod and avoid the threaded rod from bending and being damaged. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the entire invention;

[0032] Figure 2 This is a schematic diagram of the internal components of the present invention;

[0033] Figure 3 This is a schematic diagram of the long rod section of the present invention;

[0034] Figure 4 For the present invention Figure 3 Enlarged view of a portion of point A in the middle;

[0035] Figure 5 This is a schematic diagram of the ring plate of the present invention.

[0036] Figure 6 This is a schematic diagram of the head-swinging monitoring device of the present invention;

[0037] Figure 7 For the present invention Figure 6 A magnified view of a portion of point B in the middle;

[0038] Figure 8 This is a schematic diagram of the telescopic deceleration device of the present invention.

[0039] In the diagram: 1. GIS expansion joint body; 2. Ring plate; 3. Short column; 4. Long rod; 5. Round plate; 6. Spring 1; 7. Strip shell; 8. Pressure sensor; 9. Spring 2; 10. Strip plate; 11. Short frame; 12. Ring plate; 13. Ring airbag; 14. Air outlet; 15. Air pressure sensor; 16. Connecting block; 17. Swing head monitoring device; 171. Arc plate; 172. Long shell; 173. Tension sensing component; 174. Spring 3; 175. Long frame; 176. U-shaped frame; 177. U-shaped frame; 178. L-shaped plate; 179. Groove plate; 18. Telescopic deceleration device; 181. Round shell; 182. Threaded rod; 183. Square hole block; 184. Rubber pad; 185. I-shaped ring; 186. Hole straight plate; 187. Concave transverse plate. Detailed Implementation

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0041] Please see Figures 1-8 One embodiment of the present invention is: an online monitoring device for deformation of GIS expansion joints, comprising:

[0042] Two ring plates 2, with notches on the top surface of the two ring plates 2, and two short columns 3 on the right side of the left ring plate 2, with a long rod 4 hinged to the right side of each of the two short columns 3, and the two long rods 4 passing through and slidingly installed on the left side of the right ring plate 2;

[0043] Strip shell 7 is fixed to the inner wall of the recess of the right annular plate 2. Pressure sensor 8 is fixed to the right side of the inner wall of strip shell 7. Spring 2 9 is fixed to the right side of pressure sensor 8. Strip plate 10 is fixed to the right end of spring 2 9. The outer wall of strip plate 10 is slidably connected to the inner wall of strip shell 7. The left end of strip plate 10 is hinged to the inner wall of the recess of the left annular plate 2.

[0044] A short frame 11 is fixed to the bottom surface of the strip 10. A ring plate 12 is fixed to the bottom surface of the short frame 11. An annular airbag 13 is fixed in the middle of the inner wall of the ring plate 12. An air outlet 14 is provided on the bottom surface of the annular airbag 13. The air outlet 14 passes through and is fixed to the bottom of the inner side of the ring plate 12. A pressure sensor 15 is fixedly installed on the front side of the air outlet 14. The pressure sensor 15 is used to monitor the gas pressure inside the annular airbag 13 in real time.

[0045] Two ring plates 2 are fixed on both sides of the outer wall of the GIS expansion joint body 1. The expansion joint is set in the middle of the GIS expansion joint body 1. Connecting flanges are set on the left and right sides of the GIS expansion joint body 1 respectively. A circular plate 5 is fixed on the right side of each of the two long rods 4. A spring 6 is fixed on the left side of each of the two circular plates 5. The left ends of the two springs 6 are fixedly connected to the right side of the right ring plate 2. The two springs 6 are respectively sleeved on the outside of the two long rods 4. Connecting blocks 16 are fixed on the front and back of the ring plate 12. The inner walls of the two connecting blocks 16 are fixedly connected to the outer walls of the two long rods 4. The strip plate 10 is located inside the lower part of the strip shell 7. A notch is opened on the top surface of the strip plate 10. The ring plate 12 is sleeved on the outside of the GIS expansion joint body 1. The air pressure sensor 15 is located below the ring plate 12.

[0046] When high-temperature gas flows through the GIS expansion joint body 1, the expansion joint of the GIS expansion joint body 1 begins to extend. The left side of the GIS expansion joint body 1 drives the left annular plate 2 to move to the left, the left annular plate 2 drives the short column 3 to move to the left, the short column 3 drives the long rod 4 to move to the left, the long rod 4 slides to the left in the right annular plate 2, the long rod 4 drives the circular plate 5 to move to the left, the circular plate 5 drives the spring 6 to move to the left, the spring 6 begins to contract and store energy, the long rod 4 limits the deformation range of the expansion joint of the GIS expansion joint body 1. At the same time, the left annular plate 2 drives the strip plate 10 to move to the left, the strip plate 10 slides to the left in the strip shell 7, the strip plate 10 drives the spring 9 to move to the left, the spring 9 contracts and deforms, the spring 9 transmits energy... Pressure is applied to the surface of pressure sensor 8, and pressure sensor 8 sends data to the computer terminal to report the expansion and contraction status of the GIS expansion joint body 1 in real time. When the GIS expansion joint body 1 contracts due to cold, spring 6 releases its elastic force, and the expansion and contraction of the GIS expansion joint body 1 returns to its original position. When the GIS expansion joint body 1 bends to the left, the GIS expansion joint body 1 drives the left ring plate 2 to rotate upward or downward. The left ring plate 2 rotates upward or downward on the rotating shaft of the strip plate 10. The left ring plate 2 drives the short column 3 to rotate upward or downward. The short column 3 rotates upward or downward on the long rod 4, so that when the GIS expansion joint body 1 bends to the left, it will not affect the pressure data collected by pressure sensor 8.

[0047] As the strip 10 slides to the left within the shell 7, it causes the short frame 11 to move to the left. The short frame 11 then causes the ring plate 12 to move to the left, which in turn causes the connecting block 16 to move to the left. The connecting block 16 moves to the left in sync with the long rod 4. The connecting block 16 restricts the leftward movement of the ring plate 12, preventing it from touching the surface of the GIS expansion joint body 1 during displacement. The ring plate 12 causes the ring airbag 13 to move to the left, which in turn causes the air outlet 14 to move to the left. The air outlet 14 then causes the air pressure sensor 15 to move to the left. When the expansion joint of the GIS expansion joint body 1 deforms during expansion and contraction, the GIS... The expansion joint of the GIS expansion joint body 1 will contact the surface of the annular airbag 13. The deformation of the expansion joint of the GIS expansion joint body 1 will compress the surface of the annular airbag 13, and the gas inside the annular airbag 13 will be forced into the air outlet 14. The air pressure sensor 15 will come into contact with the compressed gas and output the air pressure data inside the annular airbag 13 to the computer terminal, which will report the degree of bending of the expansion joint of the GIS expansion joint body 1 in real time. This avoids the problem that the online monitoring device is not easy to monitor the bending amplitude of the GIS expansion joint during the monitoring of the GIS expansion joint status, resulting in poor monitoring effect of the online monitoring device on the deformation of the GIS expansion joint.

[0048] Please see Figures 1-8Based on the above embodiments, in another embodiment of the present invention, a swing head monitoring device 17 is provided on the outer wall of the long rod 4, which is used to monitor the swing status of the left side of the GIS expansion joint; a telescopic deceleration device 18 is provided on the right side of the strip plate 10, which is located inside the strip shell 7 and is used to slow down the telescopic speed of the GIS expansion joint.

[0049] The head-swing monitoring device 17 includes:

[0050] Arc plate 171 is fixed to the left side of the outer wall of the two long rods 4;

[0051] A long shell 172 is inserted and fixed to the left side of the arc plate 171. A tension sensing component 173 is fixed to the right side of the inner wall of the long shell 172, and a spring 174 is fixed to the left side of the tension sensing component 173.

[0052] The long frame 175 is slidably installed on the inner wall of the long shell 172. The right side of the long frame 175 is fixedly connected to the left end of the spring 174. A U-shaped frame 176 is hinged to the left end of the long frame 175. The left side of the U-shaped frame 176 is fixedly connected to the right side of the left annular plate 2. The arc plate 171 is located below the GIS expansion joint body 1. The long shell 172 is located in the middle of the right side of the arc plate 171. The U-shaped frame 176 is located below the GIS expansion joint body 1.

[0053] As the long rod 4 moves the circular plate 5 to the left, it also moves the arc plate 171 to the left. The arc plate 171 then moves the long shell 172 to the left, which in turn moves the long frame 175 to the left. The long frame 175 then moves the U-shaped frame 176 to the left. When the left side of the GIS expansion joint body 1 extends and bends, the left side of the GIS expansion joint body 1 causes the left annular plate 2 to rotate upwards or downwards. The left annular plate 2 then causes the U-shaped frame 176 to rotate upwards or downwards. When the U-shaped frame 176 rotates upwards or downwards, it pulls the long frame 175 to the left. The long frame 175 moves to the left within the long shell 172, pulling the spring 174 to the left. The tension of the spring 174 is transmitted to the tension sensing component 173, which monitors the GIS expansion joint body 1 in real time whether it is tilted up or down. This allows the operator to understand the deformation state of the GIS expansion joint body 1 immediately, thus avoiding the problem of inaccurate monitoring caused by the inability to detect the tilted up or down state of the GIS expansion joint body 1 during the online monitoring process.

[0054] A herringbone frame 177 is fixed to the outer wall of the long frame 175, an L-shaped plate 178 is fixed to the bottom surface of the herringbone frame 177, a groove plate 179 is fixed to the bottom surface of the long shell 172, a through opening is provided on the left side of the groove plate 179, and the inner wall of the through opening of the groove plate 179 slides in contact with the outer wall of the L-shaped plate 178.

[0055] As the long frame 175 pulls the spring 174 to move to the left, the long frame 175 also moves the loop frame 177 to the left. The loop frame 177 then moves the L-shaped plate 178 to the left. The L-shaped plate 178 slides to the left through the slot of the groove plate 179, so that the L-shaped plate 178 is supported below when the long frame 175 moves to the left, thus preventing deformation caused by the lack of support below when the long frame 175 moves.

[0056] Telescopic deceleration device 18 includes:

[0057] A circular shell 181 is fixed to the right side of the strip 10, and a threaded rod 182 is rotatably installed on the inner wall of the circular shell 181.

[0058] Square hole block 183, which penetrates and is fixed to the left side of the inner wall of the strip shell 7, and the inner wall of square hole block 183 is threadedly connected to the outer wall of threaded rod 182.

[0059] Rubber pad 184 is fixed to the right end of threaded rod 182;

[0060] While the strip 10 drives the short frame 11 to move to the left, the strip 10 also drives the round shell 181 to move to the left. The round shell 181 drives the threaded rod 182 to move to the left. Under the restriction of the square hole block 183, the threaded rod 182 rotates in the round shell 181. The thread groove of the threaded rod 182 slides to the left in the square hole block 183. The threaded rod 182 drives the rubber pad 184 to rotate and move to the left. The rubber pad 184 limits the distance the threaded rod 182 moves to the left. The friction between the thread groove of the threaded rod 182 and the square hole block 183 reduces the extension and retraction speed of the GIS expansion joint body 1, thereby avoiding the problem of the GIS expansion joint body 1 being damaged by impact due to excessive extension and retraction speed during the online monitoring of the GIS expansion joint status.

[0061] An I-shaped ring 185 is fixed to the outer wall of the threaded rod 182, and a concave transverse plate 187 is fixed to the top of the inside of the strip shell 7. The outer wall of the concave transverse plate 187 slides in contact with the inner wall of the notch of the strip plate 10. A hole straight plate 186 is slidably installed on the inner wall of the concave transverse plate 187. A round hole is opened on the left side of the hole straight plate 186, and the inner wall of the round hole of the hole straight plate 186 is rotatably connected to the inner wall of the I-shaped ring 185.

[0062] As the threaded rod 182 rotates and moves to the left, it drives the I-shaped ring 185 to turn to the left. The I-shaped ring 185 drives the hole straight plate 186 to move to the left. The hole straight plate 186 slides to the left in the concave transverse plate 187, so that the hole straight plate 186 cooperates with the I-shaped ring 185 to support the threaded rod 182 and avoid the problem of bending and damage to the threaded rod 182.

[0063] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An online monitoring device for deformation of GIS expansion joints, characterized in that, include: Two ring plates (2), the top surfaces of the two ring plates (2) are provided with notches, and two short columns (3) are provided on the right side of the left ring plate (2). A long rod (4) is hinged to the right side of each of the two short columns (3). The two long rods (4) pass through and slide on the left side of the right ring plate (2). A strip shell (7) is fixed to the inner wall of the recess of the right annular plate (2). A pressure sensor (8) is fixed to the right side of the inner wall of the strip shell (7). A spring (9) is fixed to the right side of the pressure sensor (8). A strip plate (10) is fixed to the right end of the spring (9). The outer wall of the strip plate (10) is slidably connected to the inner wall of the strip shell (7). The left end of the strip plate (10) is hinged to the inner wall of the recess of the left annular plate (2). A short frame (11) is fixed to the bottom surface of a strip plate (10). A ring plate (12) is fixed to the bottom surface of the short frame (11). An annular airbag (13) is fixed in the middle of the inner wall of the ring plate (12). An air outlet (14) is provided on the bottom surface of the annular airbag (13). The air outlet (14) penetrates and is fixed to the bottom of the inner side of the ring plate (12). A pressure sensor (15) is fixedly installed on the front side of the air outlet (14). The pressure sensor (15) is used to monitor the gas pressure inside the annular airbag (13) in real time. The outer wall of the long rod (4) is provided with a swing head monitoring device (17), which is used to monitor the swing status of the left side of the GIS expansion joint.

2. The GIS expansion joint deformation online monitoring device according to claim 1, characterized in that: The two ring plates (2) are fixed on both sides of the outer wall of the GIS expansion joint body (1). The expansion joint is provided in the middle of the GIS expansion joint body (1). The connecting flanges are provided on the left and right sides of the GIS expansion joint body (1).

3. The GIS expansion joint deformation online monitoring device according to claim 2, characterized in that: A circular plate (5) is fixed to the right side of each of the two long rods (4), and a spring (6) is fixed to the left side of each of the two circular plates (5). The left ends of the two springs (6) are fixedly connected to the right side of the right ring plate (2). The two springs (6) are respectively sleeved on the outside of the two long rods (4). Connecting blocks (16) are fixed to the front and back of the ring plate (12). The inner walls of the two connecting blocks (16) are fixedly connected to the outer walls of the two long rods (4).

4. The GIS expansion joint deformation online monitoring device according to claim 3, characterized in that: The strip (10) is located inside the lower part of the strip shell (7). The top surface of the strip (10) has a notch. The ring plate (12) is fitted outside the GIS expansion joint body (1). The air pressure sensor (15) is located below the ring plate (12).

5. The GIS expansion joint deformation online monitoring device according to claim 4, characterized in that: A telescopic deceleration device (18) is provided on the right side of the strip (10). The telescopic deceleration device (18) is located inside the strip shell (7). The telescopic deceleration device (18) is used to slow down the telescopic speed of the GIS expansion joint.

6. The GIS expansion joint deformation online monitoring device according to claim 5, characterized in that: The head-swing monitoring device (17) includes: Arc plate (171), said arc plate (171) is fixed to the left side of the outer wall of the two long rods (4); A long shell (172) is inserted through and fixed to the left side of the arc plate (171). A tension sensing component (173) is fixed to the right side of the inner wall of the long shell (172), and a spring three (174) is fixed to the left side of the tension sensing component (173). The long frame (175) is slidably installed on the inner wall of the long shell (172). The right side of the long frame (175) is fixedly connected to the left end of the spring three (174). The left end of the long frame (175) is hinged with a U-shaped frame (176). The left side of the U-shaped frame (176) is fixedly connected to the right side of the left ring plate (2).

7. The GIS expansion joint deformation online monitoring device according to claim 6, characterized in that: The arc plate (171) is located below the GIS expansion joint body (1), the long shell (172) is located in the middle of the right side of the arc plate (171), and the U-shaped frame (176) is located below the GIS expansion joint body (1).

8. The GIS expansion joint deformation online monitoring device according to claim 7, characterized in that: The outer wall of the long frame (175) is fixed with a spiral frame (177), the bottom surface of the spiral frame (177) is fixed with an L-shaped plate (178), the bottom surface of the long shell (172) is fixed with a groove plate (179), the groove plate (179) has a through opening on the left side, and the inner wall of the through opening of the groove plate (179) slides in contact with the outer wall of the L-shaped plate (178).

9. The GIS expansion joint deformation online monitoring device according to claim 8, characterized in that: The telescopic deceleration device (18) includes: A circular shell (181) is fixed to the right side of the strip (10), and a threaded rod (182) is rotatably installed on the inner wall of the circular shell (181). A square hole block (183) is inserted through and fixed on the left side of the inner wall of the strip shell (7). The inner wall of the square hole block (183) is threadedly connected to the outer wall of the threaded rod (182). A rubber pad (184) is fixed to the right end of the threaded rod (182).

10. The GIS expansion joint deformation online monitoring device according to claim 9, characterized in that: The outer wall of the threaded rod (182) is fixed with an I-shaped ring (185), and the top of the inside of the strip shell (7) is fixed with a concave horizontal plate (187). The outer wall of the concave horizontal plate (187) is in sliding contact with the inner wall of the groove of the strip plate (10). A hole straight plate (186) is slidably installed on the inner wall of the concave horizontal plate (187). A round hole is opened on the left side of the hole straight plate (186), and the inner wall of the round hole of the hole straight plate (186) is rotatably connected to the inner wall of the I-shaped ring (185).

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