SF6 leakage alarm monitoring device convenient to install

Abstract

The utility model belongs to the technical field of power equipment monitoring, and particularly relates to an SF6 leakage alarm monitoring device convenient to install, which comprises an SF6 gas detection sensor, a control processing host, an alarm and an installation support. The SF6 gas detection sensor is fixedly connected to the mounting support, the mounting support comprises a C-shaped support, the SF6 gas detection sensor is fixedly connected to the C-shaped support, screw connecting mechanisms are fixedly connected to the two ends of the C-shaped support, the C-shaped support comprises a rectangular shell and two L-shaped sliding rods, one ends of the two L-shaped sliding rods are slidably connected to the interior of the rectangular shell, and the other ends of the two L-shaped sliding rods are slidably connected to the interior of the rectangular shell. The other end of the L-shaped sliding rod is fixedly connected with the screw connecting mechanism, and a locking piece is fixedly connected to the rectangular shell. According to the utility model, the locking nut can be simply installed on the flange connection structure, and SF6 leakage at the flange connection structure can be monitored.

Description

Technical Field

[0001] This utility model belongs to the field of power equipment monitoring technology, specifically relating to an SF6 leakage alarm monitoring device that is easy to install. Background Technology

[0002] In power systems, SF6 gas is widely used in flange connection structures of high-voltage switchgear, GIS switchgear, and other equipment due to its excellent insulation and arc-quenching properties. However, sealing failure at the flange interface is one of the main risk points for SF6 leakage. Unfortunately, some older equipment lacks SF6 leakage alarm and monitoring devices at its flange interfaces, necessitating retrofitting and installation.

[0003] However, most existing monitoring devices adopt a fixed installation structure, which requires drilling and bolting to fix them to the equipment surface, making it difficult to install SF6 leakage alarm monitoring devices. Utility Model Content

[0004] The purpose of this invention is to provide an easy-to-install SF6 leakage alarm and monitoring device that can simply install a locking nut on the flange connection structure to monitor SF6 leakage at the flange connection structure.

[0005] The specific technical solution adopted by this utility model is as follows:

[0006] An easy-to-install SF6 leak alarm monitoring device includes an SF6 gas detection sensor, a control processing host, an alarm, and a mounting bracket. The alarm and the SF6 gas detection sensor are electrically connected to the control processing host via wires. The SF6 gas detection sensor is fixedly connected to the mounting bracket, which includes a C-shaped bracket. The SF6 gas detection sensor is fixedly connected to the C-shaped bracket, and both ends of the C-shaped bracket are fixedly connected with screw connection mechanisms.

[0007] Furthermore, the C-shaped bracket includes a rectangular shell and two L-shaped slide rods. One end of the two L-shaped slide rods is slidably connected inside the rectangular shell, and the other end of the L-shaped slide rods is fixedly connected to a screw connection mechanism. A locking element is fixedly connected to the rectangular shell.

[0008] Furthermore, the locking element includes an outer ring fixedly connected to the end of the rectangular shell, and a locking screw is threaded onto the outer ring.

[0009] Furthermore, a return spring that abuts against the L-shaped slide rod is fixedly connected inside the rectangular shell.

[0010] Furthermore, two spring adjustment plates that can move along the axis of the rectangular shell are installed inside the rectangular shell. The two spring adjustment plates are respectively fixedly connected to the ends of two return springs. A moving part that is pulsatingly connected to the spring adjustment plates is fixedly connected to the rectangular shell.

[0011] Furthermore, the movable component includes a rotating rod rotatably connected to the rectangular shell, with two threaded rods fixedly connected to the outer side of the rotating rod, and the two spring adjusting plates respectively threadedly connected to the two threaded rods.

[0012] Furthermore, the screw connection mechanism is a V-shaped block, which is fixedly connected to the end of the L-shaped slide rod.

[0013] The technical effects achieved by this utility model are as follows:

[0014] This utility model provides an easy-to-install SF6 leakage alarm and monitoring device. By fixing two screw connection mechanisms to the outside of two connecting screws, the locking nut can be easily installed on the flange connection structure to monitor SF6 leakage at the flange connection structure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model when it is installed on a flange connection structure;

[0016] Figure 2 This is a schematic diagram of the structure of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 4 This is a utility model Figure 1 A magnified view of a portion of point A in the middle.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Pipe flange; 2. Connecting screw; 3. Locking nut; 4. SF6 gas detection sensor; 5. Rectangular shell; 6. L-shaped slide bar; 7. V-block; 8. Outer ring; 9. Locking screw; 10. Return spring; 11. Spring adjusting plate; 12. Rotating rod; 13. Threaded rod; 14. Reinforcing nut. Detailed Implementation

[0021] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0022] like Figures 1-4 As shown, an easy-to-install SF6 leak alarm monitoring device includes an SF6 gas detection sensor 4, a control processing host, an alarm, and a mounting bracket.

[0023] Both the alarm and the SF6 gas detection sensor 4 are electrically connected to the control processing host via wires. The SF6 gas detection sensor 4 monitors whether there is an SF6 gas leak. If there is a leak, the control processing host controls the alarm to issue an audible and visual alarm.

[0024] Here, the control and processing host can be a microcontroller.

[0025] Here, the SF6 gas detection sensor 4 can be an infrared absorption sensor, a thermal conductivity sensor, or an ultrasonic sensor.

[0026] Among them, such as Figures 1-4 As shown, the SF6 gas detection sensor 4 is fixedly connected to the mounting bracket, which is used to fix the SF6 gas detection sensor 4 to the connecting screw 2 that connects the two pipe flanges 1.

[0027] Specifically, each of the two adjacent pipe flanges 1 has multiple opposing circular holes, and a connecting screw 2 is inserted into the two opposing circular holes. A locking nut 3 is threaded onto the outside of the connecting screw 2. The pipe flange 1, the connecting screw 2 and the locking nut 3 form a flange connection structure.

[0028] like Figures 1-2 As shown, the mounting bracket includes a C-shaped bracket. The SF6 gas detection sensor 4 is fixedly connected to the C-shaped bracket. Both ends of the C-shaped bracket are fixedly connected with screw connection mechanisms. At this time, the two screw connection mechanisms can be fixedly connected to the outside of the two connecting screws 2, and the locking nut 3 can be easily installed on the flange connection structure to monitor the SF6 leakage at the flange connection structure.

[0029] The C-shaped bracket can be a fixed bracket or an adjustable bracket; in this technical solution, an adjustable bracket is preferred. Figures 2-3 As shown, the C-shaped bracket includes a rectangular shell 5 and two L-shaped slide rods 6. One end of the two L-shaped slide rods 6 is slidably connected inside the rectangular shell 5, and the other end of the L-shaped slide rods 6 is fixedly connected to the screw connection mechanism. At this time, the distance between the two screw connection mechanisms can be adjusted by sliding the two rectangular shells 5 to match the distance between the two connecting screws 2.

[0030] A locking component for positioning the L-shaped slide rod 6 is fixedly connected to the rectangular shell 5. The locking component includes an outer ring 8 fixedly connected to the end of the rectangular shell 5. A locking screw 9 is threaded onto the outer ring 8. The locking screw 9 can abut against the L-shaped slide rod 6 to lock the L-shaped slide rod 6.

[0031] At the same time, such as Figure 3 As shown, a return spring 10 that abuts against the L-shaped slide rod 6 can be fixedly connected inside the rectangular shell 5. At this time, the L-shaped slide rod 6 is elastically extended and retracted by the two return springs 10. The elastic force of the return springs 10 can be used to make the rectangular shell 5 automatically positioned between the two L-shaped slide rods 6, thereby automatically positioning the SF6 gas detection sensor 4 between the two screw connection mechanisms.

[0032] Meanwhile, two spring adjustment plates 11 that can move along the axis of the rectangular shell 5 are installed inside the rectangular shell 5. The two spring adjustment plates 11 are fixedly connected to the ends of the two return springs 10 respectively. By moving the spring adjustment plates 11, the tension of the return springs 10 can be adjusted, thereby adjusting the elastic thrust applied by the return springs 10 to the L-shaped slide rod 6.

[0033] A movable component is fixedly connected to the rectangular shell 5 and is driven by the spring adjusting plate 11. The movable component includes a rotating rod 12 rotatably connected to the rectangular shell 5. Two threaded rods 13 are fixedly connected to the outer side of the rotating rod 12. The threads of the two threaded rods 13 are arranged in opposite directions. The two spring adjusting plates 11 are threadedly connected to the two threaded rods 13 respectively. At this time, by rotating the rotating rod 12, the two spring adjusting plates 11 can be driven to move in opposite directions, thereby synchronously adjusting the tension of the two return springs 10.

[0034] Among them, such as Figures 1-2 As shown, the screw connection mechanism can be an annular piece that can be sleeved on the outside of the connecting screw 2, or it can be a V-shaped block 7. The V-shaped block 7 is fixedly connected to the end of the L-shaped slide bar 6. In this technical solution, the V-shaped block 7 is preferred, so that it can adapt to a variety of screw sizes.

[0035] Meanwhile, in order to ensure that the L-shaped slide bar 6 can be fixed more stably on the outside of the connecting screw 2, the mounting bracket also includes two reinforcing nuts 14 that are adapted to the V-shaped block 7. The reinforcing nuts 14 can be threaded onto the outside of the connecting screw 2, so that the V-shaped block 7 can be clamped and fixed by the locking nut 3 and the reinforcing nuts 14.

[0036] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A SF6 leakage alarm monitoring device convenient to install, comprising a SF6 gas detection sensor (4), a control processing host, an alarm and a mounting bracket, the alarm and the SF6 gas detection sensor (4) are both electrically connected with the control processing host through wires, and the SF6 gas detection sensor (4) is fixedly connected on the mounting bracket, characterized in that: The mounting bracket includes a C-shaped bracket, and the SF6 gas detection sensor (4) is fixedly connected to the C-shaped bracket. Both ends of the C-shaped bracket are fixedly connected with screw connection mechanisms. ​ 2. The SF6 leakage alarm monitoring device of claim 1, wherein: The C-shaped bracket includes a rectangular shell (5) and two L-shaped slide rods (6). One end of the two L-shaped slide rods (6) is slidably connected inside the rectangular shell (5), and the other end of the L-shaped slide rods (6) is fixedly connected to a screw connection mechanism. A locking element is fixedly connected to the rectangular shell (5).

3. The SF6 leakage alarm monitoring device of claim 2, wherein: The locking element includes an outer ring (8) fixedly connected to the end of the rectangular shell (5), and a locking screw (9) is threaded onto the outer ring (8).

4. The SF6 leakage alarm monitoring device of any one of claims 2-3, wherein: The rectangular shell (5) is internally fixedly connected to a return spring (10) that abuts against the L-shaped slide rod (6).

5. The SF6 leakage alarm monitoring device of claim 4, wherein: The rectangular shell (5) is equipped with two spring adjustment plates (11) that can move along the axis of the rectangular shell (5). The two spring adjustment plates (11) are fixedly connected to the ends of two return springs (10) respectively. The rectangular shell (5) is fixedly connected with a moving part that is connected to the spring adjustment plates (11) in a transmission.

6. The SF6 leakage alarm monitoring device of claim 5, wherein: The movable component includes a rotating rod (12) rotatably connected to a rectangular shell (5), and two threaded rods (13) are fixedly connected to the outside of the rotating rod (12). The two spring adjusting plates (11) are threadedly connected to the two threaded rods (13) respectively.

7. The SF6 leakage alarm monitoring device of claim 2, wherein: The screw connection mechanism is a V-block (7), which is fixedly connected to the end of the L-shaped slide bar (6).

8. The SF6 leakage alarm monitoring device of claim 7, wherein: The mounting bracket also includes two reinforcing nuts (14) that are adapted to the V-block (7).

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