A GIS micro-water online monitoring device based on probe protection

Abstract

The present invention belongs to the technical field of online trace water monitoring, and specifically relates to a GIS online trace water monitoring device based on probe protection, which includes an online trace water monitor and GIS equipment. The online trace water monitor includes an electric dial, a connecting pipe, and a monitoring pipe, and the electric dial is connected to the monitoring pipe via the connecting pipe. Two connecting holes are provided below the monitoring pipe, and the monitoring pipe is connected to the internal pipeline of the GIS equipment through the connecting holes. An SF6 density trace water online monitoring sensor is fixed above the inner wall of the monitoring pipe, and a ventilation plate, two guide blocks, two arc blocks, a threaded rod, and an air pressure plate are provided below the SF6 density trace water online monitoring sensor. The ventilation plate is fixedly mounted on the inner wall of the monitoring pipe. The device solves the problem that current online trace water monitoring cannot protect the sensor and probe while ensuring monitoring accuracy, resulting in a significant reduction in the service life of the sensor due to the influence of air pressure and trace water.

Description

Technical Field

[0001] The invention belongs to the technical field of micro-water online monitoring, and in particular relates to a GIS micro-water online monitoring device based on probe protection. Background Art

[0002] GIS equipment includes both large and small devices. Large GIS equipment primarily consists of the following components: hardware systems, software systems, geospatial data, high-voltage components, and a gas system. The gas system of a GIS device is divided into several chambers, each filled with SF6 gas at a certain pressure. During the manufacturing process of GIS equipment, residual moisture may remain inside. After the equipment is filled with sulfur hexafluoride gas, this moisture comes into contact with the gas, forming trace water. Currently, during trace water content monitoring and SF6 gas pressure monitoring, sensors are corroded by trace water and subjected to pressure shock, significantly reducing their service life and affecting monitoring accuracy. This phenomenon has become a pressing issue for researchers in this field. Summary of the Invention

[0003] The purpose of the present invention is to provide a GIS micro-water online monitoring device based on probe protection to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a GIS micro-water online monitoring device based on probe protection, including a micro-water online monitoring instrument and a GIS device, wherein the micro-water online monitoring instrument includes an electric dial, a connecting pipe and a monitoring pipe, and the electric dial is connected to the monitoring pipe through the connecting pipe, and two connecting holes are provided below the monitoring pipe, and are connected to the internal pipeline of the GIS device through the connecting holes; an SF6 density micro-water online monitoring sensor is fixed on the upper part of the inner wall of the monitoring pipe, and a ventilation plate, two guide blocks, Two arc blocks, a threaded rod and an air pressure plate, the ventilation plate is fixedly installed on the inner wall of the monitoring tube, the two guide blocks are respectively fixedly installed on the left and right sides of the inner wall of the monitoring tube, and a limit block is provided at the bottom end, the left and right sides of the air pressure plate are provided with guide grooves, and are slidably connected to the guide blocks through the guide grooves, and the air pressure plate is located above the limit block, a through hole is provided in the middle of the air pressure plate, and the threaded rod is provided in the through hole, a limiting disk is fixed to the upper end of the threaded rod, and a spring is provided between the bottom of the limiting disk and the top of the air pressure plate, and two air holes are provided on the surface of the ventilation plate and the surface of the limiting disk.

[0005] The present invention further describes that a threaded hole is provided at the bottom of the monitoring tube, and the threaded rod is threadedly connected to the threaded hole.

[0006] The present invention further describes that arc grooves are provided on the left and right sides of the inner wall of the monitoring tube and the upper ends of the two guide blocks. The two arc blocks are respectively embedded in the arc grooves. The bottom surfaces of the two arc blocks are in contact with the upper and lower parts of the guide blocks, and the width dimensions of the two are the same; the inner sides of the two arc blocks are inclined from bottom to top and outward to form an inclined surface. After the air pressure plate moves upward, it is slidably connected to the arc block through the guide groove.

[0007] The present invention further describes that threaded holes are also opened on the left and right sides of the monitoring tube, and two bolts are threadedly connected to the threaded holes; the inner ends of the two bolts are respectively fitted with the outer sides of the two arc-shaped blocks.

[0008] The present invention further states that after the arc-shaped block moves, the inner side thereof contacts the outer side of the limiting disk.

[0009] The present invention further describes that the bolt and the threaded rod rotate in cooperation with each other.

[0010] The present invention further states that the interior of the arc block is in the shape of a central hole and the inner side is elastic; after the limiting disk moves downward, it contacts the arc block, and the inner side of the arc block generates elastic deformation.

[0011] The present invention further describes that the edge of the limiting disk is arc-shaped.

[0012] Compared with the existing technology, the present invention has the following beneficial effects: by pre-setting the air pressure, the present invention can prevent the SF6 density and trace water online monitoring sensor from being continuously subjected to high-intensity air pressure and trace water erosion, which would result in a reduction in the service life of the SF6 density and trace water online monitoring sensor. When the air pressure is low, the internal condition of the GIS equipment is good and no monitoring is required. Monitoring is not performed until the air pressure increases, thereby protecting the probe. In addition, the pressure monitoring limit can be adjusted quickly and conveniently without affecting the monitoring process.

[0013] The inclined arc block can reduce the gas flow rate, so that the air pressure above the air pressure plate gradually increases, maintaining the stability of the air pressure growth, avoiding the SF6 density and trace water online monitoring sensor from being suddenly subjected to air pressure shock, which may lead to inaccurate monitoring data, and can further protect the SF6 density and trace water online monitoring sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2It is a schematic diagram of the internal structure of the monitoring tube of the present invention;

[0017] Figure 3 is a cross-sectional view of the internal structure of the monitoring tube of the present invention;

[0018] Figure 4 This is an exploded view of the internal structure of the monitoring tube of the present invention;

[0019] Figure 5 is a plan view of the present invention;

[0020] Figure 6 It is a structural schematic diagram of the arc block of the present invention;

[0021] Figure 7 Schematic diagram of the gas flow direction after the air pressure plate of the present invention moves;

[0022] Figure 8 is a schematic diagram of embodiment 1 of the present invention;

[0023] Figure 9 is a schematic diagram of embodiment 2 of the present invention;

[0024] Figure 10 Schematic diagrams of Embodiments 3 and 5 of the present invention;

[0025] In the figure: 1. Electric dial; 2. Connecting pipe; 3. Monitoring pipe; 32. Ventilation plate; 33. Guide block; 34. Arc block; 35. Threaded rod; 36. Air pressure plate; 37. Limiting plate; 38. Spring; 39. Bolt. DETAILED DESCRIPTION

[0026] The following is a non-limiting detailed description of the technical solutions of the present invention in conjunction with preferred embodiments and their accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0027] See also Figures 1-10 The present invention provides a technical solution: a GIS micro-water online monitoring device based on probe protection, comprising a micro-water online monitoring instrument and GIS equipment. The micro-water online monitoring instrument comprises an electric dial 1, a connecting pipe 2, and a monitoring pipe 3. The electric dial 1 is connected to the monitoring pipe 3 through the connecting pipe 2. The monitoring pipe 3 has two connecting holes provided below it, and is connected to the internal pipe of the GIS equipment through the connecting holes.

[0028] An SF6 density micro-water online monitoring sensor is fixed above the inner wall of the monitoring tube 3. A ventilation plate 32, two guide blocks 33, two arc blocks 34, a threaded rod 35 and an air pressure plate 36 are arranged below the SF6 density micro-water online monitoring sensor. The ventilation plate 32 is fixedly mounted on the inner wall of the monitoring tube 3. The two guide blocks 33 are respectively fixedly mounted on the left and right sides of the inner wall of the monitoring tube 3, and a limit block is provided at the bottom. Guide grooves are provided on the left and right sides of the air pressure plate 36, and are slidably connected to the guide blocks 33 through the guide grooves. The air pressure plate 36 is located above the limit block. A through hole is provided in the middle of the air pressure plate 36, and the threaded rod 35 is provided in the through hole. A limiting disk 37 is fixed to the upper end of the threaded rod 35. A spring 38 is provided between the bottom of the limiting disk 37 and the top of the air pressure plate 36. Two air holes are provided on the surface of the ventilation plate 32 and the surface of the limiting disk 37.

[0029] During GIS equipment operation, moisture may remain as gas passes through the pipeline. After the equipment is filled with SF6 gas, this moisture will come into contact with the gas, forming micro-water. At this time, the pressure of micro-water is monitored using the GIS micro-water online monitor. The sensing unit inside the SF6 density micro-water online monitoring sensor uses high-precision quartz crystal microbalance technology to measure the micro-water content. A silicon piezoresistive sensor is also installed inside to monitor the SF6 gas density and pressure in real time. The test data is fed back to the electric dial 1, which displays the value on the dial according to the monitoring data.

[0030] like Figure 7 As shown, during the test, in order to protect the SF6 density and trace water online monitoring sensor, that is, the monitoring probe, SF6 gas enters the connecting hole through the pipeline and then enters the monitoring tube 3 through the connecting hole. The gas pressure exerts a force on the air pressure plate 36. The air pressure plate 36 is forced to slide upward on the guide block 33 through the guide groove, and the spring 38 is deformed under the force. When the air pressure increases, the air pressure plate 36 slides until it is out of contact with the guide block 33. The gas enters the top of the air pressure plate 36 through the guide groove and then applies pressure to the SF6 density and trace water online monitoring sensor through the air holes of the limiting disk 37 and the air holes of the vent plate 32. By setting the air pressure in advance, the SF6 density and trace water online monitoring sensor can be prevented from being continuously subjected to high-intensity air pressure and trace water erosion, which leads to a reduction in the service life of the SF6 density and trace water online monitoring sensor. When the air pressure is low, the internal condition of the GIS equipment is good and no monitoring is required. Monitoring is not performed until the air pressure increases, thereby protecting the probe.

[0031] The bottom of the monitoring tube 3 is provided with a threaded hole, and the threaded rod 35 is threadedly connected to the threaded hole;

[0032] Example 1: Figure 8As shown, the operator can rotate the threaded rod 35 to make it move upward or downward while rotating through the threaded hole. The threaded rod 35 drives the limiting plate 37 to rotate and move upward or downward synchronously. If the pressure monitoring limit needs to be increased, the limiting plate 37 is moved downward, thereby applying a force to the spring 38. At this time, the air pressure plate 36 is subjected to the force of the spring 38, thereby increasing the resistance. Only when the pressure of the SF6 gas increases further will the air pressure plate 36 be disengaged from the guide block 33, thereby allowing the gas to circulate, further protecting the SF6 density micro-water online monitoring sensor, and increasing the pressure monitoring limit. Conversely, if the pressure monitoring limit needs to be lowered, the threaded rod 35 is rotated in the opposite direction, the limiting plate 37 moves upward, the force applied to the spring 38 is reduced, and the pressure monitoring limit is reduced. The adjustment is convenient and quick, and the monitoring is not affected during the process.

[0033] Arc grooves are provided on the left and right sides of the inner wall of the monitoring tube 3 and the upper ends of the two guide blocks 33. The two arc blocks 34 are respectively embedded in the arc grooves. The bottom surfaces of the two arc blocks 34 fit in with the upper and lower surfaces of the guide blocks 33, and the width dimensions of the two are the same.

[0034] The inner sides of the two arc-shaped blocks 34 are inclined from bottom to top and outward to form an inclined surface. After the air pressure plate 36 moves upward, it is slidably connected to the arc-shaped block 34 through the guide groove;

[0035] like Figure 7 As shown, after the air pressure plate 36 slides along the guide block 33 and breaks away from the guide block 33, it slides between the arc block 34. At this time, the gas flows through the guide groove and the inclined arc block 34, which can reduce the gas flow rate, so that the air pressure above the air pressure plate 36 gradually increases, maintaining the stability of the air pressure growth, avoiding the SF6 density and trace water online monitoring sensor from being suddenly subjected to air pressure shock, thereby causing inaccurate monitoring data, and can further protect the SF6 density and trace water online monitoring sensor.

[0036] Threaded holes are also provided on the left and right sides of the monitoring tube 3, and two bolts 39 are threadedly connected in the threaded holes;

[0037] The inner ends of the two bolts 39 are respectively fitted with the outer sides of the two arc-shaped blocks 34;

[0038] Example 2: Figure 9 and Figure 10As shown, the operator rotates the bolt 39 so that it moves while rotating through the threaded hole, and its inner end supports the arc block 34 and pushes the arc block 34 inward, so that the arc block 34 slides in the arc groove. At this time, the inclined surface of the arc block 34 increases, and the gas flow rate increases relatively, which can speed up the monitoring efficiency and accurately control the gas flow rate to ensure the stability and accuracy of the monitoring. After the gas flow rate is increased, the arc block 34 moves inward, so that the gas flow direction changes, and the gas flows concentratedly to the limiting disk 37, and is relatively blocked by the limiting disk 37, thereby reducing the damage of the gas pressure to the SF6 density micro-water online monitoring sensor.

[0039] After the arc block 34 moves, its inner side contacts the outer side of the limiting plate 37;

[0040] Example 3: Figure 10 As shown, when the arc block 34 moves to completely contact with the limiting disk 37, the gas flows through the guide groove and then flows from the air holes of the limiting disk 37. The gas flow is more concentrated, which can relatively improve the accuracy of air pressure monitoring. Moreover, through the force exerted by the limiting disk 37 on the arc block 34, the moving distance of the arc block 34 can be accurately controlled to avoid the arc block 34 moving significantly and causing the air flow to increase instantly, thereby protecting the SF6 density micro-water online monitoring sensor to the greatest extent and ensuring the monitoring accuracy.

[0041] The bolt 39 and the threaded rod 35 rotate in cooperation;

[0042] Embodiment 4: After the limiting disk 37 contacts the arc block 34, the pressure limit continues to increase, and the threaded rod 35 causes the limiting disk 37 to continue to move downward. Since the arc block 34 blocks the limiting disk 37, at this time, the operator can synchronously rotate the bolt 39 to move it outward. The limiting disk 37 pushes the arc block 34 outward, thereby increasing the moving distance of the limiting disk 37, increasing the pressure limit, and increasing the stroke. It also facilitates the resetting of the arc block 34, so as to facilitate the subsequent high-precision control of the gas flow.

[0043] The interior of the arc block 34 is in the shape of a central hole, and the inner side is elastic;

[0044] After the limiting plate 37 moves downward, it contacts the arc-shaped block 34 , and the inner side of the arc-shaped block 34 is elastically deformed.

[0045] The edge of the limiting disk 37 is arc-shaped;

[0046] Example 5: Figure 10As shown, in the fourth embodiment, after the arc block 34 is reset, the arc block 34 contacts the limiting disk 37, and at this time the limiting disk 37 can continue to move downward to further increase the air pressure monitoring limit. At the same time, the arc block 34 is squeezed by the limiting disk 37, and the elastic part on its inner side is deformed, making its inner side arc-shaped. The gap between the arc block 34 and the guide groove is relatively increased, thereby increasing the gas flow rate and making the monitoring response more timely, avoiding the impact of untimely monitoring on the subsequent shutdown of the equipment when the gas pressure is too high, and playing a role in protecting the GIS equipment.

[0047] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0048] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the aforementioned embodiments, or that some of the technical features may be replaced with equivalents. Such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A GIS micro-water online monitoring device based on probe protection, comprising a micro-water online monitoring instrument and GIS equipment, characterized in that: The micro-water online monitor comprises an electric dial (1), a connecting pipe (2), and a monitoring pipe (3), wherein the electric dial (1) is connected to the monitoring pipe (3) via the connecting pipe (2), and two connecting holes are provided below the monitoring pipe (3), and the monitoring pipe (3) is connected to the internal pipe of the GIS equipment via the connecting holes; An SF6 density micro-water online monitoring sensor is fixed above the inner wall of the monitoring tube (3), and a ventilation plate (32), two guide blocks (33), two arc blocks (34), a threaded rod (35) and an air pressure plate (36) are provided below the SF6 density micro-water online monitoring sensor. The ventilation plate (32) is fixedly mounted on the inner wall of the monitoring tube (3), and the two guide blocks (33) are respectively fixedly mounted on the left and right sides of the inner wall of the monitoring tube (3), and a limit block is provided at the bottom end. The left and right sides of the air pressure plate (36) are provided with a guide groove, and the air pressure plate (36) is slidably connected to the guide block (33) through the guide groove, and the air pressure plate (36) is located above the limit block. A through hole is provided in the middle of the air pressure plate (36), and A threaded rod (35) is arranged in the through hole, a limiting plate (37) is fixed to the upper end of the threaded rod (35), a spring (38) is arranged between the lower part of the limiting plate (37) and the upper part of the air pressure plate (36), two air holes are arranged on the surface of the vent plate (32) and the surface of the limiting plate (37), a threaded hole is arranged at the bottom of the monitoring tube (3), and the threaded rod (35) is threadedly connected to the threaded hole, and arc grooves are arranged on the left and right sides of the inner wall of the monitoring tube (3) and the upper ends of the two guide blocks (33), and the two arc blocks (34) are respectively embedded in the arc grooves, and the bottom surfaces of the two arc blocks (34) and the upper and lower sides of the guide blocks (33) are in contact with each other, and the width dimensions of the two are the same; The inner sides of the two arc-shaped blocks (34) are inclined from bottom to top and outward to form an inclined surface. After the air pressure plate (36) moves upward, it is slidably connected to the arc-shaped block (34) through the guide groove. The left and right sides of the monitoring tube (3) are also provided with threaded holes, and two bolts (39) are threadedly connected in the threaded holes. The inner ends of the two bolts (39) are respectively fitted with the outer sides of the two arc-shaped blocks (34).

2. The GIS micro-water online monitoring device based on probe protection according to claim 1 is characterized by: After the arc-shaped block (34) moves, its inner side contacts the outer side of the limiting disk (37).

3. The GIS micro-water online monitoring device based on probe protection according to claim 2 is characterized by: The bolt (39) and the threaded rod (35) rotate in cooperation with each other.

4. The GIS micro-water online monitoring device based on probe protection according to claim 3 is characterized by: The interior of the arc-shaped block (34) is in a central hole shape, and the inner side is elastic; After the limiting disk (37) moves downward, it contacts the arc block (34), and the inner side of the arc block (34) undergoes elastic deformation.

5. The GIS micro-water online monitoring device based on probe protection according to claim 4 is characterized in that: The edge of the limiting disk (37) is arc-shaped.

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