Sensor rapid replacement structure of SF6 online monitoring system

Abstract

The utility model relates to a sensor rapid replacement structure of an SF6 on-line monitoring system, which comprises a high-voltage switch cabinet and an SF6 monitoring sensor, the lower end of the SF6 monitoring sensor extends into the high-voltage switch cabinet through a mounting port, a fixing device is arranged between the high-voltage switch cabinet and the SF6 monitoring sensor, and the SF6 monitoring sensor is arranged in the fixing device. The fixing device comprises a connecting rod, a vertical rod, an extrusion block, a fixing groove, a sliding block, a connecting shaft and an arc-shaped clamping block. According to the utility model, when the SF6 monitoring sensor extends into the high-voltage switch cabinet along the mounting port, the extrusion block extrudes the sliding block in the fixing groove, so that the sliding block moves towards the sensor, the arc-shaped clamping block clamps and fixes the sensor, and when the extrusion block completely enters the fixing groove, the arc-shaped clamping block cannot transversely move any more, so that the SF6 monitoring sensor is fixed. When the SF6 monitoring sensor is disassembled and replaced, only the sensor needs to be pulled out of the installation opening, a new sensor needs to be replaced, then the installation operation is repeated, the replacement steps are simple, the consumed time is short, and rapid replacement of the SF6 monitoring sensor is achieved.

Description

Technical Field

[0001] This utility model relates to the field of gas monitoring sensor technology, specifically a quick sensor replacement structure for an SF6 online monitoring system. Background Technology

[0002] SF6 gas, with its excellent insulation and arc-quenching properties, is widely used in high-voltage power switchgear. SF6 gas monitoring sensors can detect SF6 leaks into the environment, promptly identifying faults in high-voltage switchgear, and are crucial for ensuring the safe operation and proper maintenance of power equipment. Real-time monitoring of SF6 gas leaks allows for early detection of potential safety hazards, enabling timely intervention and improving system reliability.

[0003] However, existing SF6 gas monitoring sensors are usually fixed on high-voltage switchgear, and the installation and replacement procedures are cumbersome and time-consuming, which is not conducive to the rapid replacement of SF6 gas monitoring sensors. Utility Model Content

[0004] The purpose of this invention is to provide a quick sensor replacement structure for an SF6 online monitoring system to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick-change sensor structure for an SF6 online monitoring system, comprising a high-voltage switchgear and an SF6 monitoring sensor. The high-voltage switchgear is provided with an installation port for installing the SF6 monitoring sensor. The lower end of the SF6 monitoring sensor extends into the high-voltage switchgear through the installation port. Two sets of fixing devices are provided between the high-voltage switchgear and the SF6 monitoring sensor. The fixing devices include connecting rods on both sides of the SF6 monitoring sensor. A vertical rod is fixedly connected below the connecting rod. A pressing block is provided below the vertical rod. The pressing block is wider at the top and narrower at the bottom. Two sets of fixing grooves are provided at the top of the high-voltage switchgear. A slider is slidably disposed in the fixing groove. The slider is narrower at the top and wider at the bottom. The slider is adapted to the pressing block. The sum of the length of the pressing block and the length of the slider is equal to the length of the fixing groove. A connecting shaft is provided on the top surface of the slider. An arc-shaped clamping block is fixedly disposed above the connecting shaft.

[0006] As a preferred embodiment, a slide rail is provided at the bottom of the fixing groove, and the slider is slidably connected to the slide rail.

[0007] As a preferred embodiment, a sealing gasket is provided on the lower outer wall of the SF6 monitoring sensor.

[0008] As a preferred embodiment, two sets of locking devices are provided between the high-voltage switchgear and the SF6 monitoring sensor, and the two sets of locking devices are symmetrically distributed on both sides of the SF6 monitoring sensor.

[0009] As a preferred embodiment, the locking device includes a threaded groove, a threaded rod, and a mounting groove. The threaded groove is disposed on the connecting rod, and the outer thread of the threaded rod is threadedly connected to the inner wall of the threaded groove. The mounting groove is disposed at the top of the high-voltage switchgear, and the mounting groove is adapted to the bottom end of the threaded rod. A locking bolt is disposed on the outer wall of the upper end of the threaded rod.

[0010] As a preferred embodiment, the high-voltage switchgear is provided with a cabinet door on the front, and one end of the cabinet door is hinged to the high-voltage switchgear.

[0011] As can be seen from the technical solution provided by this utility model above, the sensor quick-change structure for an SF6 online monitoring system provided by this utility model has the following beneficial effects:

[0012] In this invention, a fixing device is installed between the high-voltage switchgear and the SF6 monitoring sensor. When installing the SF6 monitoring sensor, as it is inserted into the high-voltage switchgear through the installation port, the pressing block (larger at the top and smaller at the bottom) and the slider (smaller at the top and larger at the bottom), which are mutually compatible, compress the slider in the fixing groove. This causes the slider to move towards the SF6 monitoring sensor, allowing the arc-shaped clamping block to hold and fix the SF6 monitoring sensor. Since the sum of the length of the pressing block and the length of the slider equals the length of the fixing groove, the arc-shaped clamping block can no longer move laterally when the pressing block is fully inserted into the fixing groove, thus achieving the effect of fixing the SF6 monitoring sensor. When disassembling and replacing, simply pull the SF6 monitoring sensor out of the installation port. The slider is no longer compressed by the pressing block, and the arc-shaped clamping block can move away from the SF6 monitoring sensor along with the slider. After replacing the SF6 monitoring sensor, the above installation operation can be repeated. The replacement steps are simple and time-saving, enabling rapid replacement of the SF6 monitoring sensor. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the sensor quick-change structure of an SF6 online monitoring system according to this utility model;

[0014] Figure 2 This is a schematic diagram of the connection of the SF6 monitoring sensor in the sensor quick-change structure of the SF6 online monitoring system of this utility model;

[0015] Figure 3 This is a partial cross-sectional view of the sensor quick-change structure of an SF6 online monitoring system according to this utility model.

[0016] In the diagram: 1. High-voltage switchgear; 2. SF6 monitoring sensor; 3. Fixing device; 4. Locking device; 5. Cabinet door; 11. Mounting port; 21. Sealing gasket; 31. Connecting rod; 32. Vertical rod; 33. Extrusion block; 34. Fixing groove; 35. Slide rail; 36. Slider; 37. Connecting shaft; 38. Arc-shaped clamp; 41. Threaded groove; 42. Threaded rod; 43. Mounting groove; 44. Locking bolt. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0019] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific embodiments.

[0022] like Figure 1-3As shown, this utility model embodiment provides a quick sensor replacement structure for an SF6 online monitoring system, including a high-voltage switchgear 1 and an SF6 monitoring sensor 2. The high-voltage switchgear 1 is provided with an installation port 11 for installing the SF6 monitoring sensor 2. The lower end of the SF6 monitoring sensor 2 extends into the high-voltage switchgear 1 through the installation port 11. Two sets of fixing devices 3 are provided between the high-voltage switchgear 1 and the SF6 monitoring sensor 2. The fixing device 3 includes connecting rods 31 provided on both sides of the SF6 monitoring sensor 2. A vertical rod 32 is fixedly connected below the connecting rod 31. A pressing block 33 is provided below the vertical rod 32. The pressing block 33 is wider at the top and narrower at the bottom. Two sets of fixing grooves 34 are provided at the top of the high-voltage switchgear 1. A slider 36 is slidably arranged in the fixing groove 34. The slider 36 is narrower at the top and wider at the bottom. The slider 36 is adapted to the pressing block 33. The sum of the length of the pressing block 33 and the length of the slider 36 is equal to the length of the fixing groove 34. A connecting shaft 37 is provided on the top surface of the slider 36. An arc-shaped clamping block 38 is fixedly arranged above the connecting shaft 37.

[0023] To quickly install the SF6 monitoring sensor 2 onto the mounting port 11 of the high-voltage switchgear 1, two sets of fixing devices 3 are used. These two sets of fixing devices 3 are symmetrically positioned around the SF6 monitoring sensor 2. When the SF6 monitoring sensor 2 is inserted into the high-voltage switchgear 1 through the mounting port 11, the pressing block 33 (larger at the top, smaller at the bottom) and the slider 36 (smaller at the top, larger at the bottom), and the pressing block 33 and slider 36 are mutually compatible, cause the pressing block 33 to move downwards and press against the slider 36 in the fixing groove 34. This causes the two sets of sliders 36 to move towards the SF6 monitoring sensor 2, and the two sets of arc-shaped clamping blocks 38 to hold the SF6 monitoring sensor 2. The SF6 monitoring sensor 2 is fixed in place because the sum of the length of the extrusion block and the length of the slider is equal to the length of the fixing groove. When the extrusion block 33 is fully inserted into the fixing groove 34, the slider 36 and the arc-shaped clamping block 38 can no longer move laterally, thus achieving the effect of fixing the SF6 monitoring sensor 2. When disassembling and replacing, simply pull the SF6 monitoring sensor 2 upward from the mounting port 11. The slider 36 will no longer be squeezed by the extrusion block 33, allowing the arc-shaped clamping block 38 to move away from the SF6 monitoring sensor 2 along with the slider 36. After replacing the new SF6 monitoring sensor 2, repeat the above installation operation. The replacement steps are simple and take less time, enabling the rapid replacement of the SF6 monitoring sensor 2.

[0024] The bottom end of the fixed groove 34 is provided with a slide rail 35, and the slider 36 is slidably connected to the slide rail 35.

[0025] In order to facilitate the left and right sliding of the slider 36 in the fixed groove 34, a slide rail 35 is provided, on which the slider 36 can slide left and right.

[0026] A sealing gasket 21 is provided on the lower outer wall of the SF6 monitoring sensor 2.

[0027] In order to reduce the leakage of SF6 gas in the high-voltage switchgear 1 and improve the monitoring accuracy, a sealing gasket 21 is set on the outer wall of the lower end of the F6 monitoring sensor 2 to seal the mounting port 11 to a certain extent, thereby reducing the leakage of SF6 gas.

[0028] Two sets of locking devices 4 are provided between the high-voltage switchgear 1 and the SF6 monitoring sensor 2, and the two sets of locking devices 4 are symmetrically distributed on both sides of the SF6 monitoring sensor 2.

[0029] Among them, by setting a locking device 4, the SF6 monitoring sensor 2 is further locked and fixed on the high-voltage switchgear 1 to prevent the SF6 monitoring sensor 2 from falling off the high-voltage switchgear 1 due to collisions or other situations.

[0030] The locking device 4 includes a threaded groove 41, a threaded rod 42, and a mounting groove 43. The threaded groove 41 is disposed on the connecting rod 31. The outer thread of the threaded rod 42 is threadedly connected to the inner wall of the threaded groove 41. The mounting groove 43 is disposed at the top of the high-voltage switchgear 1. The mounting groove 43 is adapted to the bottom end of the threaded rod 42. A locking bolt 44 is disposed on the outer wall of the upper end of the threaded rod 42.

[0031] When further securing the SF6 monitoring sensor 2 to the high-voltage switchgear 1, the threaded rod 42 is inserted through the threaded groove 41 into the mounting groove 43 on the high-voltage switchgear 1, and then the threaded rod 42 is secured with the locking bolt 44.

[0032] The high-voltage switchgear 1 is provided with a cabinet door 5 on the front, and one end of the cabinet door 5 is hinged to the high-voltage switchgear 1.

[0033] Cabinet door 5 is provided to facilitate viewing of the equipment inside the high-voltage switchgear 1.

[0034] The working principle of this embodiment is as follows: When installing the SF6 monitoring sensor 2, as the SF6 monitoring sensor 2 is inserted into the high-voltage switchgear 1 through the installation port 11, the squeezing block 33 squeezes the slider 36 in the fixing groove 34, causing the slider to move towards the SF6 monitoring sensor 2. This causes the arc-shaped clamping block 38 to clamp and fix the SF6 monitoring sensor 2. When disassembling and replacing the SF6 monitoring sensor 2, it is only necessary to pull the SF6 monitoring sensor 2 upward from the installation port 11. Since the slider 36 is no longer squeezed by the squeezing block 33, the arc-shaped clamping block 38 can move away from the SF6 monitoring sensor 2 along with the slider 36. After replacing the new SF6 monitoring sensor 2, the above installation operation can be repeated. The replacement steps are simple and take less time, realizing the rapid replacement of the SF6 monitoring sensor 2.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sensor quick replacement structure of an SF6 online monitoring system, comprising a high-voltage switch cabinet (1) and an SF6 monitoring sensor (2), characterized in that: The high-voltage switch cabinet (1) is provided with a mounting port (11) for mounting an SF6 monitoring sensor (2), the lower end of the SF6 monitoring sensor (2) extends into the high-voltage switch cabinet (1) through the mounting port (11), two sets of fixing devices (3) are arranged between the high-voltage switch cabinet (1) and the SF6 monitoring sensor (2), the fixing device (3) comprises a connecting rod (31) arranged on both sides of the SF6 monitoring sensor (2), a vertical rod (32) is fixedly connected below the connecting rod (31), an extrusion block (33) is arranged below the vertical rod (32), the extrusion block (33) is wide at the top and narrow at the bottom, the high-voltage switch cabinet (1) is provided with two sets of fixed grooves (34) at the top end, a sliding block (36) is slidably arranged in the fixed groove (34), the sliding block (36) is narrow at the top and wide at the bottom, the sliding block (36) is matched with the extrusion block (33), the sum of the length of the extrusion block (33) and the length of the sliding block (36) is equal to the length of the fixed groove (34), a connecting shaft (37) is arranged on the top surface of the sliding block (36), and an arc-shaped clamping block (38) is fixedly arranged above the connecting shaft (37).

2. The sensor quick replacement structure of an SF6 online monitoring system according to claim 1, characterized in that: The fixed groove (34) is provided with a sliding rail (35) at the bottom end, and the sliding block (36) is slidably connected to the sliding rail (35).

3. The sensor quick replacement structure of an SF6 online monitoring system according to claim 2, characterized in that: A sealing gasket (21) is arranged on the outer wall of the lower end of the SF6 monitoring sensor (2).

4. The sensor quick replacement structure of an SF6 online monitoring system according to claim 1, characterized in that: Two sets of locking devices (4) are arranged between the high-voltage switch cabinet (1) and the SF6 monitoring sensor (2), and the two sets of locking devices (4) are symmetrically distributed on both sides of the SF6 monitoring sensor (2).

5. The sensor quick replacement structure of an SF6 online monitoring system according to claim 4, characterized in that: The locking device (4) comprises a threaded groove (41), a threaded rod (42) and a mounting groove (43), the threaded groove (41) is arranged on the connecting rod (31), the outer thread of the threaded rod (42) is threadedly connected with the inner wall of the threaded groove (41), the mounting groove (43) is arranged at the top end of the high-voltage switch cabinet (1), the mounting groove (43) is matched with the bottom end of the threaded rod (42), and a locking bolt (44) is arranged on the outer wall of the upper end of the threaded rod (42).

6. The sensor quick replacement structure of an SF6 online monitoring system according to claim 1, characterized in that: The front of the high-voltage switch cabinet (1) is provided with a cabinet door (5), and one end of the cabinet door (5) is hingedly arranged on the high-voltage switch cabinet (1).

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