Double-floating-ball gas relay

Abstract

The utility model relates to the technical field of gas relays, in particular to a double-floating-ball gas relay, which comprises a relay main body, connecting parts are fixedly arranged on two sides of the relay main body, an observation window is arranged on the relay main body, a connecting piece is arranged on the relay main body, and a protective plate is fixedly arranged on the connecting piece. A protective cover is fixedly arranged at the lower end of the protective plate, and an observation opening matched with the observation window is further formed in the protective cover. The protective plate is provided with an observation opening, a blocking cover is movably connected to the observation opening in an inserted mode, the blocking cover is fixedly connected with the protective plate through a connecting mechanism, an extending plate is fixedly arranged on the observation opening, a baffle matched with the extending plate is fixedly arranged on the blocking cover, and through the arrangement of the protective plate, the protective cover is matched with the blocking cover; the main body, the connecting part and the observation window of the gas relay are shielded and protected and are separated from the external environment, so that the gas relay is prevented from being eroded by wind and sand, and the observation window is also prevented from being pasted by silt, bird droppings and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of gas relays, in particular to a double-float gas relay. Background Art

[0002] A gas relay (also known as a gas relay) is a protective device used in transformers. It is installed in the pipeline between the transformer's oil conservator and oil tank. When an internal fault in the transformer causes oil decomposition to produce gas or causes oil flow surge, the gas relay contacts will operate, connecting the specified control circuit and promptly issuing a signal alarm (for light gas) or activating the protection element to automatically cut off the transformer (for heavy gas). The double-float gas relay is a type of gas relay and is also an indispensable protective device in substations. It is located in the pipeline between the transformer's oil conservator and oil tank. It responds to faults such as gas generated by equipment failure, insulation oil loss, and accelerated flow caused by sudden expansion of insulating oil, and initiates emergency measures.

[0003] Existing double-float gas relays typically have an observation window to facilitate observation of changes in the internal oil level, and a junction box is also typically provided for easier wiring. For example, Chinese Patent Publication No. CN114050087A discloses a "new double-float gas relay device." This device replaces the traditional horizontal top junction box with a vertical junction box on the side of the device, avoiding serious hidden dangers such as false fault signal alarms and even circuit breaker tripping caused by moisture and condensation inside the junction box. Using a prismatic reflective concave lens, and leveraging the different refractive indices of air, organic glass, and transformer oil, optical principles are employed to improve oil level visibility, solving the problem of difficulty in determining whether the gas relay is fully filled or insufficiently filled due to the transparent and colorless transformer oil.

[0004] However, in actual use, many transformers are open-air structures, and the double-float gas relay installed on the transformer is also exposed to the environment and is exposed to wind, sun, wind and sand erosion, and is inevitably damaged. It will also be covered with mud, sand and bird droppings, affecting the observation of oil level. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art double-float gas relay, such as being damaged by wind and sun, erosion by wind and sand, and being clogged by mud, sand and bird droppings, which affects the observation of the oil amount, and to propose a double-float gas relay.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A double-float gas relay is designed, comprising a relay body, connecting portions fixedly provided on both sides of the relay body, an observation window provided on the relay body, a connecting piece provided on the relay body, a protective plate fixedly provided on the connecting piece, a protective cover fixedly provided on the lower end of the protective plate, a connecting groove provided on the protective cover to cooperate with the connecting portion, and an observation port provided on the protective cover to cooperate with the observation window;

[0008] A shield is movably connected to the observation port, and the shield is fastened to the protective plate through a connecting mechanism. An extension plate is fixedly provided on the observation port, and a baffle matched with the extension plate is fixedly provided on the shield.

[0009] Furthermore, a plurality of through slots are formed on the extension plate, elastic clips are fixedly provided in the through slots, and the elastic clips are in contact with the baffle.

[0010] Furthermore, the elastic clamp includes an elastic plate and a limiting portion fixedly arranged on the elastic plate, and the baffle is provided with a limiting hole corresponding to the limiting portion.

[0011] Furthermore, the connecting mechanism includes a guide rail fixedly provided on the protective plate, a positioning frame movably connected to the guide rail is fixedly provided on the shield, and a limiting plate cooperating with the shield is fixedly provided on the protective plate.

[0012] Furthermore, a threaded hole is provided on the limiting plate, a hand-tightened bolt threadably connected to the threaded hole is rotatably provided on the shield, and a pulling handle is fixedly provided on the shield.

[0013] Furthermore, the connecting member is a U-shaped bolt, both ends of which pass through the protective plate and are fixedly connected with ball nuts.

[0014] Furthermore, a support plate is fixedly provided on the connecting member, and the upper end of the support plate is in contact with the inner wall of the protective plate.

[0015] The double-float gas relay proposed in this utility model has the following beneficial effects:

[0016] In the present invention, by arranging a protective plate, a protective cover and a blocking cover, the main body, the connection part and the observation window of the gas relay are shielded and protected, separated from the external environment to avoid erosion by wind and sand, and at the same time, the observation window is prevented from being blocked by mud, sand, bird droppings, etc.

[0017] Secondly, in the present invention, the protective cover is connected to the shield by cooperating with the baffle through the extension plate, and the shield is fixed by setting an elastic clip to prevent the shield from falling off. In some extreme environments such as deserts where there is strong wind and sand, the shield is fixed by a connecting mechanism to make it firmly connected to the protective plate to prevent it from being blown off by the wind and sand. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a double-float gas relay proposed in the utility model;

[0019] Figure 2 This is a structural diagram of the observation window of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the guide rail of the utility model;

[0021] Figure 4 This is a structural diagram of the positioning frame of the utility model.

[0022] In the figure: 1. Relay body; 2. Connecting part; 3. Observation window; 4. Connecting piece; 41. Ball nut; 42. Support plate; 5. Protective plate; 6. Protective cover; 61. Connecting groove; 62. Observation port; 63. Extension plate; 64. Baffle; 65. Elastic clip; 651. Elastic plate; 652. Limiting part; 7. Baffle; 8. Connecting mechanism; 81. Guide rail; 82. Positioning frame; 83. Limiting plate; 84. Thumb bolt. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Reference Figure 1-4 A double-float gas relay includes a relay body 1, a connecting portion 2 is fixedly provided on both sides of the relay body 1, an observation window 3 is provided on the relay body 1, a connecting member 4 is provided on the relay body 1, a protective plate 5 is fixedly provided on the connecting member 4, a protective cover 6 is fixedly provided at the lower end of the protective plate 5, a connecting groove 61 is provided on the protective cover 6 to cooperate with the connecting portion 2, and an observation port 62 is also provided on the protective cover 6 to cooperate with the observation window 3;

[0025] A shield 7 is movably connected to the observation port 62 , and the shield 7 is fastened to the protective plate 5 via a connecting mechanism 8 . An extension plate 63 is fixedly provided on the observation port 62 , and a baffle 64 that matches the extension plate 63 is fixedly provided on the shield 7 .

[0026] In the present invention, the protective plate 5, the protective cover 6 and the blocking cover 7 cooperate to shield and protect the relay body 1, the connecting part 2 and the observation window 3 from the external environment to avoid erosion by wind, sand and bird droppings. At the same time, it also prevents the observation window 3 from being blocked by mud, sand and bird droppings. When observing the oil amount in the relay, the blocking cover 7 is removed, and the oil amount in the relay body 1 is observed and recorded through the observation port 62 and the observation window 3.

[0027] Furthermore, in this embodiment, a plurality of through slots are provided on the extension plate 63, and elastic clips 65 are fixedly provided in the through slots. The elastic clips 65 abut against the baffle 64 to increase the friction with the baffle 64, fix the baffle 64 and the baffle cover 7, and prevent the baffle cover 7 from falling off.

[0028] Furthermore, in this embodiment, the elastic clip 65 includes an elastic plate 651 and a limiting portion 652 fixed on the elastic plate 651. A limiting hole corresponding to the limiting portion 652 is opened on the baffle 64. The limiting portion 652 is plugged into the limiting hole to increase the resistance of the baffle 7 and prevent the baffle 7 from falling. When taking out the baffle 7, force is applied to the baffle 7 to cause the elastic plate 651 to undergo elastic deformation, so that the limiting portion 652 can be separated from the limiting hole and the baffle 7 can be taken out.

[0029] It should be noted that, in this embodiment, the connecting mechanism 8 includes a guide rail 81 fixedly provided on the protective plate 5, a positioning frame 82 movably connected to the guide rail 81 is fixedly provided on the baffle 7, and a limiting plate 83 cooperating with the baffle 7 is fixedly provided on the protective plate 5. When the baffle 7 is installed, the position of the baffle 7 is limited by cooperating with the positioning frame 82 and the guide rail 81 to prevent the position of the limiting hole from not corresponding to the position of the limiting portion 652 during installation.

[0030] In addition, in this embodiment, a threaded hole is provided on the limit plate 83, and a hand-tightened bolt 84 threadedly connected to the threaded hole is rotatably provided on the shield 7. A pulling handle is fixedly provided on the shield 7, and the hand-tightened bolt 84 is threadedly connected to the threaded hole to fix the shield 7 to prevent the shield 7 from being blown off in harsh environments such as deserts.

[0031] In detail, in this embodiment, the connecting member 4 is a U-shaped bolt, both ends of which pass through the protective plate 5 and are fixedly connected with a ball nut 41. The ball nut 41 fixes the protective plate 5 to prevent the protective plate 5 from falling off.

[0032] In more detail, in this embodiment, a support plate 42 is fixedly provided on the connecting member 4, and the upper end of the support plate 42 contacts the inner wall of the protective plate 5. The protective plate 5 is clamped and fixed by providing the support plate 42 and the ball nut 41 to prevent the support plate 42 from being blown up and down and causing damage to the relay.

[0033] Working mode: When working, the protective plate 5, the protective cover 6 and the shield 7 cooperate to shield and protect the relay body 1, the connecting part 2 and the observation window 3. The limiting part 652 is plugged into the limiting hole to increase the resistance of the shield 7 to prevent the shield 7 from falling. The positioning frame 82 cooperates with the guide rail 81 to limit the position of the shield 7 to prevent the limiting hole and the limiting part 652 from not corresponding to each other during installation. The hand-tightening bolt 84 is threadedly connected to the threaded hole to fix the shield 7 to prevent the shield 7 from being blown off in harsh environments such as deserts.

[0034] When observing the oil level in the relay, the hand screw 84 is turned to remove it, and force is applied to the shield 7 to remove it. The oil level in the relay body 1 can be observed and recorded through the observation port 62 and the observation window 3 .

[0035] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A double-float gas relay, comprising a relay body (1), characterized in that: Connecting portions (2) are fixedly provided on both sides of the relay body (1), an observation window (3) is provided on the relay body (1), a connecting piece (4) is provided on the relay body (1), a protective plate (5) is fixedly provided on the connecting piece (4), a protective cover (6) is fixedly provided at the lower end of the protective plate (5), a connecting groove (61) is provided on the protective cover (6) and is matched with the connecting portion (2), and an observation port (62) is also provided on the protective cover (6) and is matched with the observation window (3); A shield (7) is movably connected to the observation port (62), and the shield (7) is fastened to the protective plate (5) via a connecting mechanism (8). An extension plate (63) is fixedly provided on the observation port (62), and a baffle (64) that matches the extension plate (63) is fixedly provided on the shield (7).

2. A double-float gas relay according to claim 1, characterized in that: The extension plate (63) is provided with a plurality of through slots, wherein elastic clamps (65) are fixedly arranged in the through slots, and the elastic clamps (65) abut against the baffle (64).

3. A double-float gas relay according to claim 2, characterized in that: The elastic clamp (65) comprises an elastic plate (651) and a limiting portion (652) fixedly arranged on the elastic plate (651), and a limiting hole corresponding to the limiting portion (652) is provided on the baffle (64).

4. The double-float gas relay according to claim 1, characterized in that: The connecting mechanism (8) comprises a guide rail (81) fixedly arranged on the protective plate (5), a positioning frame (82) movably plugged into the guide rail (81) is fixedly arranged on the shield (7), and a limiting plate (83) matched with the shield (7) is fixedly arranged on the protective plate (5).

5. The double-float gas relay according to claim 4, characterized in that: A threaded hole is provided on the limiting plate (83), a hand-tightened bolt (84) threadedly connected to the threaded hole is rotatably provided on the blocking cover (7), and a pulling handle is fixedly provided on the blocking cover (7).

6. The double-float gas relay according to claim 1, characterized in that: The connecting member (4) is a U-shaped bolt, and both ends of the U-shaped bolt pass through the protective plate (5) and are fixedly connected with a ball nut (41).

7. The double-float gas relay according to claim 6, characterized in that: A support plate (42) is fixedly provided on the connecting member (4), and the upper end of the support plate (42) is in contact with the inner wall of the protective plate (5).

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