A gas protection device for a transformer

Abstract

This utility model relates to the field of relay technology and discloses a gas protection device for a transformer, including a sealing assembly comprising a sealing element, a first connecting pipe, a second connecting pipe, a sealing ring, and a compression ring. The second connecting pipe is located on one side of the first connecting pipe, the sealing ring is fixed to the inner wall of the first connecting pipe, and the compression ring is disposed on one side of the second connecting pipe. A fixing assembly is disposed on the first connecting pipe and includes a fixing element comprising a limiting plate, a limiting block, and a support plate. The beneficial effects of this utility model are: it allows for the rapid installation of a gas relay between the transformer oil tank and the oil conservator, and maintains a tight seal after installation. During the installation, commissioning, or maintenance of the transformer, it can significantly shorten the installation time of the gas relay and prevent external air, moisture, and impurities from entering the transformer, thus maintaining the quality and insulation performance of the transformer oil.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, and in particular to a gas protection device for a transformer. Background Technology

[0002] When a fault occurs inside a transformer, such as localized overheating or discharge, the transformer oil decomposes to produce gas. A gas protection device can sensitively detect this gas production, thus indicating a potential fault within the transformer. It can issue an alarm in the early stages of a fault, buying time for timely troubleshooting. This is achieved by using a gas relay installed on the connecting pipe between the transformer tank and the conservator. When a fault occurs inside the transformer, such as localized overheating or discharge, the transformer oil decomposes to produce gas. This gas enters the gas relay, triggering its operation. The connection between the gas relay and the transformer tank and conservator is typically via a flange. Flange connections are relatively complex to install, requiring assurance of flange flatness and sealing performance. Improper installation may result in a poor seal, leading to gas leakage and affecting the normal operation of the gas relay. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] In view of the problems existing in the above and / or existing gas protection devices for transformers, this utility model is proposed.

[0005] Therefore, the problem to be solved by this utility model is that the connection between the gas relay and the transformer oil tank and oil conservator is usually a flange connection, and the flange connection installation is relatively complicated.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a gas protection device for a transformer, comprising a sealing assembly, including a sealing element, including a first connecting pipe, a second connecting pipe, a sealing ring, and a compression ring, wherein the second connecting pipe is located on one side of the first connecting pipe, the sealing ring is fixed to the inner wall of the first connecting pipe, and the compression ring is disposed on one side of the second connecting pipe; A fixing component is disposed on the first connecting pipe and includes a fixing member, including a limiting plate, a limiting block and a support plate. The limiting plate is disposed above the first connecting pipe, the limiting block is located above the second connecting pipe, and the support plate is hinged to one end of the limiting block.

[0007] In a preferred embodiment of the gas protection device for the transformer described in this utility model, the sealing assembly further includes a support member disposed on the compression ring, and a support sleeve is fixed on one side of the compression ring.

[0008] In a preferred embodiment of the gas protection device for the transformer described in this utility model, a positioning rod is inserted into the support sleeve, the positioning rod and the support sleeve are movably connected, and a first positioning plate is fixed at one end of the positioning rod.

[0009] In a preferred embodiment of the gas protection device for the transformer described in this utility model, a first filter screen is sleeved on the outer side of the first positioning plate, and the first filter screen is fixed to the inner wall of the first connecting pipe.

[0010] In a preferred embodiment of the gas protection device for the transformer described in this utility model, a movable sleeve is fixed on one side of the support sleeve, a second positioning plate is fixed on one end of the movable sleeve, a second filter screen is sleeved on the outer side of the second positioning plate, and the second filter screen is fixed to the inner wall of the second connecting pipe.

[0011] In a preferred embodiment of the gas protection device for the transformer described in this utility model, the fixing component further includes a movable part disposed on the limiting block, a movable strip fixed on one side of the limiting block, and a pressing disc fixed at one end of the movable strip.

[0012] In a preferred embodiment of the gas protection device for the transformer described in this utility model, a spring is fixed to one side of the extrusion plate, a base plate is fixed to the bottom of the support plate, and the base plate is fixed to the top of the second connecting pipe.

[0013] In a preferred embodiment of the gas protection device for the transformer described in this utility model, a support shaft is inserted into the top of the support plate, a limiting block is sleeved on the outside of the support shaft, and the limiting block is rotatably connected to the support shaft via a rotating shaft.

[0014] As a preferred embodiment of the gas protection device for the transformer described in this utility model, it further includes a main component disposed on one side of the first connecting pipe, including a gas relay and a sensor, wherein the gas relay is fixed to one side of the first connecting pipe and the sensor is fixed to the top of the gas relay.

[0015] In a preferred embodiment of the gas protection device for the transformer described in this utility model, an observation window is fixed on one side of the gas relay.

[0016] The beneficial effects of this utility model are: it can quickly install the gas relay between the transformer oil tank and the oil conservator, and can maintain the seal after installation. During the installation, commissioning or maintenance of the transformer, it can greatly shorten the installation time of the gas relay, and can prevent external air, moisture and impurities from entering the transformer, thus maintaining the quality and insulation performance of the transformer oil. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is an overall structural diagram of the gas protection device for a transformer.

[0018] Figure 2 This is a structural diagram of the first connecting pipe of the gas protection device for a transformer.

[0019] Figure 3 Gas protection device for transformers Figure 2 Enlarged view of the structure at point A in the middle.

[0020] Figure 4 This is a cross-sectional view of the first connecting pipe of the gas protection device for a transformer.

[0021] Figure 5 This is a structural diagram of the second filter screen of the gas protection device for a transformer. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0025] Example 1 Reference Figures 2-5 This is the first embodiment of the present invention. This embodiment provides a gas protection device for a transformer. The gas protection device for a transformer includes a sealing component 200, a fixing component 300, and a main component 100. The three components work together to quickly install a gas relay between the transformer oil tank and the oil conservator, and can maintain the seal after installation.

[0026] The sealing assembly 200 includes a sealing element 201, which includes a first connecting pipe 201a, a second connecting pipe 201b, a sealing ring 201c, and a compression ring 201d. The second connecting pipe is located on one side of the first connecting pipe 201a, the sealing ring 201c is fixed to the inner wall of the first connecting pipe 201a, and the compression ring 201d is disposed on one side of the second connecting pipe 201b.

[0027] When it is necessary to connect the gas relay 101 to the transformer tank or oil conservator, the second connecting pipe 201b is inserted into the first connecting pipe 201a. At this time, the compression ring 201d will compress the sealing ring 201c to achieve a sealing effect. Then, the gas relay 101 can be connected to the transformer tank or oil conservator by connecting the first connecting pipe 201a and the second connecting pipe 201b. The second connecting pipe 201b is provided on one side of the transformer tank and the oil conservator, and the first connecting pipe 201a is provided on both sides of the gas relay 101 to facilitate connection.

[0028] The fixing component 300 is disposed on the first connecting pipe 201a and includes a fixing member 301, including a limiting plate 301a, a limiting block 301b and a support plate 301c. The limiting plate 301a is disposed above the first connecting pipe 201a, the limiting block 301b is located above the second connecting pipe 201b, and the support plate 301c is hinged to one end of the limiting block 301b.

[0029] A limiting groove corresponding to the limiting block 301b is provided on the limiting plate 301a. The limiting plate 301a is fixed to the top of the first connecting pipe 201a. After the first connecting pipe 201a and the second connecting pipe 201b are connected, the limiting block 301b will move on the limiting plate 301a. At this time, the limiting plate 301a limits the limiting block 301b, thereby preventing the first connecting pipe 201a and the second connecting pipe 201b from falling off. The support plate 301c is used to support the limiting block 301b to prevent the limiting block 301b from shifting. There are two limiting blocks 301b, both of which are provided on the support plate 301c.

[0030] Example 2 Reference Figures 2-5 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0031] Specifically, the sealing assembly 200 also includes a support member 202 disposed on the compression ring 201d, and a support sleeve 202a is fixed on one side of the compression ring 201d.

[0032] The support sleeve 202a is used to support the extrusion ring 201d and prevent the extrusion ring 201d from shifting. A connecting strip is used at the connection between the support sleeve 202a and the extrusion ring 201d to create a gap and ensure the flow of gas.

[0033] Specifically, a positioning rod 202b is inserted into the support sleeve 202a, and the positioning rod 202b and the support sleeve 202a are movably connected. A first positioning disc 202c is fixed to one end of the positioning rod 202b.

[0034] When the first connecting pipe 201a and the second connecting pipe 201b are connected, the support sleeve 202a will move on the positioning rod 202b. The positioning rod 202b can support the support sleeve 202a and prevent the support sleeve 202a from shifting. The first positioning plate 202c is used to support the positioning rod 202b.

[0035] Specifically, a first filter screen 202d is sleeved on the outer side of the first positioning disk 202c, and the first filter screen 202d is fixed to the inner wall of the first connecting pipe 201a.

[0036] The first filter 202d can fix the first positioning plate 202c, preventing it from shifting. When gas or liquid flows rapidly after the first connecting pipe 201a and the second connecting pipe 201b are connected, impacts and fluctuations may occur. The first filter 202d can play a certain buffering role, allowing the air or liquid to flow more smoothly through the connecting pipe into the gas relay 101. This helps to reduce the impact on the internal components of the gas relay 101 and extend its service life.

[0037] Specifically, a movable sleeve 202e is fixed on one side of the support sleeve 202a, a second positioning disk 202f is fixed on one end of the movable sleeve 202e, a second filter screen 202g is sleeved on the outside of the second positioning disk 202f, and the second filter screen 202g is fixed to the inner wall of the second connecting pipe 201b.

[0038] When the support sleeve 202a moves on the positioning rod 202b, it causes the movable sleeve 202e to move on the positioning rod 202b, thereby supporting the second connecting pipe 201b and preventing the second connecting pipe 201b from shifting during connection. The second positioning disk 202f is used to support the movable sleeve 202e. The second filter screen 202g can support the second positioning disk 202f, and the second filter screen 202g is the same left and right as the first filter screen 202d.

[0039] Specifically, the fixed component 300 also includes a movable component 302, which is disposed on the limiting block 301b. A movable strip 302a is fixed on one side of the limiting block 301b, and a pressing plate 302b is fixed on one end of the movable strip 302a.

[0040] There are two moving strips 302a, both fixed to one side of the limiting block 301b. There are also two extrusion discs 302b, both fixed to one end of the moving strips 302a. When it is necessary to separate the first connecting pipe 201a and the second connecting pipe 201b, the extrusion discs 302b are extruded, which causes the moving strips 302a to move. The movement of the moving strips 302a causes the limiting block 301b to separate from the limiting plate 301a. At this time, the limiting of the second connecting pipe 201b can be released, thereby separating the second connecting pipe 201b from the first connecting pipe 201a.

[0041] Specifically, a spring 302c is fixed to one side of the extrusion plate 302b, and a base plate 302d is fixed to the bottom of the support plate 301c. The base plate 302d is fixed to the top of the second connecting pipe 201b.

[0042] The two ends of the spring 302c are fixed to one side of the two extrusion discs 302b respectively. When the extrusion discs 302b are extruded, the spring 302c can be applied with a compressive force. When the extrusion discs 302b are released, the spring 302c can return the extrusion discs 302b to their original position. The base plate 302d is used to support the support plate 301c.

[0043] Example 3 Reference Figures 1-5 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0044] Specifically, a support shaft 302e is inserted into the top of the support plate 301c, and a limiting block 301b is sleeved on the outside of the support shaft 302e. The limiting block 301b and the support shaft 302e are rotatably connected through a rotating shaft.

[0045] There are two support shafts 302e, both of which are inserted into the top of the support plate 301c. The support shafts 302e can support the limit block 301b and prevent the limit block 301b from shifting when it moves.

[0046] Specifically, it also includes a main component 100, which is disposed on one side of the first connecting pipe 201a, including a gas relay 101 and a sensor 102. The gas relay 101 is fixed to one side of the first connecting pipe 201a, and the sensor 102 is fixed to the top of the gas relay 101.

[0047] By using a gas relay 101 installed on the connecting pipe between the transformer oil tank and the oil conservator, when a fault occurs inside the transformer, such as local overheating or discharge, the transformer oil will decompose and produce gas. This gas enters the gas relay 101, triggering its operation, thereby indicating a possible fault inside the transformer. When a fault occurs inside the transformer, such as local overheating or discharge, the transformer oil will decompose and produce gas. The sensor 102 can sensitively detect the accumulation of this gas inside the gas relay 101. The sensor 102 can quickly respond to the generation of gas and promptly send a signal to remind the staff that there may be a fault in the transformer.

[0048] Specifically, an observation window 103 is fixed on one side of the gas relay 101.

[0049] Whether there is gas accumulation inside the gas relay 101 can be directly observed through the observation window 103. When a fault occurs inside the transformer and gas is generated, the gas enters the gas relay 101, and the presence of the gas can be seen at the observation window 103.

[0050] When using the gas relay 101, to connect it to the transformer tank or oil conservator, the second connecting pipe 201b is inserted into the first connecting pipe 201a. At this time, the compression ring 201d will compress the sealing ring 201c, causing the sealing ring 201c to expand, thereby achieving a sealing effect. When connecting the first connecting pipe 201a and the second connecting pipe 201b, the limiting block 301b will move on the limiting plate 301a. At this time, the limiting plate 301a limits the limiting block 301b, thereby preventing the first connecting pipe 201a and the second connecting pipe 201b from falling off, thus completing the connection between the two.

[0051] When it is necessary to separate the first connecting pipe 201a and the second connecting pipe 201b, the extrusion disc 302b is squeezed. When the extrusion disc 302b is squeezed, a squeezing force is applied to the spring 302c. The extrusion disc 302b will drive the moving bar 302a to move. The movement of the moving bar 302a will drive the limiting block 301b to separate from the limiting plate 301a. At this time, the limiting of the second connecting pipe 201b can be released, thereby separating the second connecting pipe 201b from the first connecting pipe 201a. Then, the extrusion disc 302b is released, and the spring force of the spring 302c will make the extrusion disc 302b return to its original position for the next use.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A gas protection device for a transformer, characterized in that: include, A sealing assembly (200) includes a sealing element (201), comprising a first connecting tube (201a), a second connecting tube (201b), a sealing ring (201c), and a compression ring (201d). The second connecting tube is located on one side of the first connecting tube (201a), the sealing ring (201c) is fixed to the inner wall of the first connecting tube (201a), and the compression ring (201d) is disposed on one side of the second connecting tube (201b). A fixing component (300) is disposed on the first connecting pipe (201a) and includes a fixing member (301), including a limiting plate (301a), a limiting block (301b) and a support plate (301c). The limiting plate (301a) is disposed above the first connecting pipe (201a), the limiting block (301b) is located above the second connecting pipe (201b), and the support plate (301c) is hinged to one end of the limiting block (301b).

2. The gas protection device for a transformer as described in claim 1, characterized in that: The sealing assembly (200) also includes a support member (202) disposed on the compression ring (201d), and a support sleeve (202a) is fixed on one side of the compression ring (201d).

3. The gas protection device for a transformer as described in claim 2, characterized in that: A positioning rod (202b) is inserted into the support sleeve (202a). The positioning rod (202b) and the support sleeve (202a) are movably connected. A first positioning disc (202c) is fixed at one end of the positioning rod (202b).

4. The gas protection device for a transformer as described in claim 3, characterized in that: A first filter screen (202d) is sleeved on the outside of the first positioning plate (202c), and the first filter screen (202d) is fixed to the inner wall of the first connecting pipe (201a).

5. The gas protection device for a transformer as described in claim 3 or 4, characterized in that: A movable sleeve (202e) is fixed on one side of the support sleeve (202a), and a second positioning plate (202f) is fixed on one end of the movable sleeve (202e). A second filter screen (202g) is sleeved on the outside of the second positioning plate (202f), and the second filter screen (202g) is fixed to the inner wall of the second connecting pipe (201b).

6. The gas protection device for a transformer as described in claim 5, characterized in that: The fixing component (300) also includes a movable part (302) disposed on the limiting block (301b). A movable strip (302a) is fixed on one side of the limiting block (301b), and a pressing disc (302b) is fixed on one end of the movable strip (302a).

7. The gas protection device for a transformer as described in claim 6, characterized in that: A spring (302c) is fixed to one side of the extrusion plate (302b), and a base plate (302d) is fixed to the bottom of the support plate (301c). The base plate (302d) is fixed to the top of the second connecting pipe (201b).

8. The gas protection device for a transformer as described in claim 6 or 7, characterized in that: A support shaft (302e) is inserted into the top of the support plate (301c), and a limiting block (301b) is sleeved on the outside of the support shaft (302e). The limiting block (301b) and the support shaft (302e) are rotatably connected by a rotating shaft.

9. The gas protection device for a transformer as described in claim 8, characterized in that: It also includes a main body component (100) disposed on one side of the first connecting pipe (201a), including a gas relay (101) and a sensor (102), wherein the gas relay (101) is fixed to one side of the first connecting pipe (201a) and the sensor (102) is fixed to the top of the gas relay (101).

10. The gas protection device for a transformer as described in claim 9, characterized in that: An observation window (103) is fixed on one side of the gas relay (101).

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