Connecting pipe fixing structure

Abstract

The utility model belongs to the technical field of transformers, and discloses a fixing structure of a connecting pipe. The connecting pipe fixing structure comprises a support, a connecting pipe and a reinforcing piece. A branch pipe is arranged at one end of the connecting pipe, and the branch pipe is connected with the moisture absorber and the support; the reinforcing piece is fixed to the support and connected with the branch pipe, and the reinforcing piece is used for supporting the branch pipe. According to the utility model, the gravity of the moisture absorbers is transferred to the fixed bracket through the reinforcers, so that the deformation resistance of the connecting pipe is enhanced, the joint at the top of the connecting pipe is prevented from being deformed due to the gravity action of a plurality of groups of moisture absorbers, the influence on the sealing property of the connecting pipe is avoided, and the normal operation of the transformer is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a fixing structure of a connecting pipe. Background Art

[0002] In the power system, oil-immersed transformers are mainly used to increase or decrease voltage to meet the needs of transmitting and distributing electric energy. In large factories, oil-immersed transformers are often used to provide a stable power supply to ensure the normal operation of the production process. In addition, oil-immersed transformers are also commonly used in transformer groups in substations. As supporting auxiliary equipment of the power system, oil-immersed transformer groups can better ensure the safety and reliability of the oil-immersed transformer group, which can improve the stability and reliability of the power grid.

[0003] The oil conservator of an oil-immersed transformer is an important protective component that regulates the thermal expansion and contraction of the transformer oil, reduces and prevents the transformer oil from oxidation and moisture, and plays a vital role in the operation of the transformer. The insulating oil in the transformer oil conservator is connected to the atmosphere through a desiccant, and the adsorbent inside the desiccant absorbs moisture and impurities in the air to maintain the good performance of the insulating oil.

[0004] In recent years, as the power level of power transformers continues to increase, the capacity continues to increase, the oil storage cabinets continue to increase, and the number of matching desiccant is also increasing. For large-capacity and high-voltage oil-immersed transformers, it may be necessary to match multiple large-capacity desiccant, which are connected by coupling pipes. Since the large-capacity desiccant itself has a certain weight, the coupling pipe is affected by the gravity of the desiccant, and its coupling pipe connection is prone to deformation, thereby affecting the sealing of the coupling pipe, and ultimately affecting the normal operation of the transformer. Utility Model Content

[0005] The utility model aims to provide a fixing structure of a connecting pipe, which is used to solve the problem that the connecting pipe is affected by the gravity of the desiccant, and its connecting pipe connection is easily deformed, thereby causing sealing problems at the connecting pipe connection, thereby ensuring stable operation of the transformer.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The fixing structure of the connecting pipe includes:

[0008] Bracket;

[0009] A connecting pipe, one end of which is provided with a branch pipe, the branch pipe is connected to the desiccant, and the branch pipe is connected to the bracket;

[0010] A reinforcement member is fixed on the bracket and connected to the branch pipe, and the reinforcement member is used to support the branch pipe.

[0011] As an optional solution for the fixing structure of a connecting pipe, the branch pipe includes a first branch pipe and multiple second branch pipes, one end of each of the second branch pipes is connected to the first branch pipe, the other end of each of the second branch pipes is connected to the desiccant, the second branch pipes are connected to the bracket, and the reinforcement is arranged between the bracket and the first branch pipe and abuts against the first branch pipe.

[0012] As an optional solution for the fixing structure of a connecting pipe, the reinforcing member includes a cushion block, the cushion block is fixed on the bracket, and the first branch pipe is pressed against the cushion block.

[0013] As an optional solution for the fixed structure of a connecting pipe, the branch pipe includes a first branch pipe and multiple second branch pipes, one end of each of the second branch pipes is connected to the first branch pipe, the other end of each of the second branch pipes is connected to the desiccant, the second branch pipes are connected to the bracket, and the reinforcement is fixedly connected to the second branch pipes.

[0014] As an optional solution for the fixing structure of a connecting pipe, the reinforcement member includes a reinforcement plate, one end of which is fixed to the bracket, and the other end is provided with a limiting groove adapted to the shape of the second branch pipe, and the second branch pipe is fixed in the limiting groove.

[0015] As an optional solution for the fixing structure of a connecting pipe, the reinforcing plate is a quadrilateral, the limiting groove is a semicircular, and the radius of the limiting groove is equal to the radius of the second branch pipe.

[0016] As an optional solution for the fixing structure of a connecting pipe, a limiting ring is provided on the bracket, and the limiting ring is a U-shaped structure. Two straight arms of the limiting ring are passed through the positioning holes of the bracket and are interference fit with the positioning holes. The limiting ring is sleeved on the branch pipe.

[0017] As an optional solution for the fixing structure of a connecting pipe, the bracket includes a first plate and a second plate connected at an angle, the first plate is used to connect the reinforcement, and the second plate is connected to the branch pipe.

[0018] As an optional solution for the fixed structure of a connecting pipe, the connecting pipe also includes multiple sections of main pipes connected in sequence, one end of one section of the main pipe is connected to the branch pipe, and adjacent main pipes are connected by a flange or a first butterfly valve.

[0019] As an optional solution for the fixing structure of a connecting pipe, the connecting pipe also includes an exhaust pipe arranged in parallel with the main pipe, the exhaust pipe is fixedly connected to the bracket, and the exhaust pipe is connected to a section of the main pipe through a second butterfly valve.

[0020] Beneficial effects:

[0021] In the utility model, a reinforcement is provided on the bracket, one end of the reinforcement is connected to the bracket, and the reinforcement is used to provide support for the branch pipe, so that the gravity of the desiccant itself is transferred to the fixed bracket through the reinforcement, thereby enhancing the deformation resistance of the connecting pipe and preventing the joint at the top of the connecting pipe from being deformed due to the gravity of multiple groups of desiccant. This can avoid affecting the sealing of the connecting pipe and ensure the normal operation of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a fixing structure of a reinforced plate-type connecting pipe provided in an embodiment of the utility model;

[0023] Figure 2 It is a top view of the fixing structure of the reinforced plate type connecting pipe provided in an embodiment of the utility model;

[0024] Figure 3 It is a structural schematic diagram of a reinforcement plate provided in an embodiment of the utility model;

[0025] Figure 4 It is a structural schematic diagram of a fixing structure of a cushion block type coupling pipe provided in an embodiment of the utility model;

[0026] Figure 5 It is a schematic diagram of the structure of the bracket provided in the embodiment of the utility model.

[0027] In the figure:

[0028] 1. bracket; 11. limiting ring; 12. first plate; 13. second plate; 131. through hole;

[0029] 2. Union pipe; 21. Branch pipe; 211. First branch pipe; 212. Second branch pipe; 22. Main pipe; 23. Flange; 24. First butterfly valve; 25. Exhaust pipe; 26. Second butterfly valve; 27. Oil injection and discharge pipe; 28. Intermediate pipe;

[0030] 3. Dehumidifier; 31. Ball valve;

[0031] 41. Pad block; 42. Reinforcement plate; 421. Limiting groove. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, 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 cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0036] Please refer to the attached Figure 1 and attached Figure 2 This embodiment relates to a fixing structure of a connecting pipe (hereinafter referred to as "fixing structure"), which includes a bracket 1, a connecting pipe 2 and a reinforcing member. A branch pipe 21 is provided at one end of the connecting pipe 2, and the branch pipe 21 is connected to the desiccant 3, and the branch pipe 21 is connected to the bracket 1; the reinforcing member is fixed on the bracket 1 and connected to the branch pipe 21, and the reinforcing member is used to support the branch pipe 21.

[0037] At present, with the continuous improvement of the grade of oil storage transformers and the continuous increase in capacity, the volume of the oil storage cabinet is also increasing, and at the same time, the number of matching desiccant 3 is also increasing. The desiccant 3 can be used to adsorb moisture and impurities inside the oil storage cabinet, thereby ensuring the good performance of the insulating oil. A plurality of branch pipes 21 are provided on the connecting pipe 2, wherein a desiccant 3 is connected to the end of each branch pipe 21, and the desiccant 3 is connected to the branch pipe 21 through a ball valve 31. This embodiment takes the "one-to-three" connecting pipe 2 as an example, and three branch pipes 21 are provided at the end of the connecting pipe 2, and each branch pipe 21 is connected to the corresponding desiccant 3. Usually, the branch pipe 21 supplies oil in the vertical direction, and the desiccant 3 stores adsorbent inside. Under the action of the desiccant 3's own gravity, the branch pipe 21 will be dragged in the vertical downward direction, thereby causing the connection at the top of the connecting pipe 2. The head is subjected to a large drag force. With a long period of dragging, the joint sealing structure at the top of the connecting pipe 2 is deformed, thereby reducing the overall sealing performance of the connecting pipe 2. Furthermore, in this embodiment, a reinforcement is arranged on the bracket 1. The reinforcement can be directly fixedly connected to the branch pipe 21 or directly abutted against the branch pipe 21, thereby providing support for the branch pipe 21 and transferring the force to the fixed bracket 1, thereby effectively avoiding the dragging effect of the joint at the top of the connecting pipe 2 due to the self-weight of multiple desiccant devices 3, thereby improving the service life of the entire oil storage cabinet.

[0038] Please continue to refer to the attached Figure 1 and attached Figure 2 Optionally, the branch pipe 21 includes a first branch pipe 211 and multiple second branch pipes 212, one end of each second branch pipe 212 is connected to the first branch pipe 211, the other end of each second branch pipe 212 is connected to the desiccant 3, the second branch pipe 212 is connected to the bracket 1, and the reinforcement is fixedly connected to the second branch pipe 212.

[0039] In this embodiment, the first branch pipe 211 is arranged along the horizontal direction, and the multiple second branch pipes 212 are arranged along the vertical direction. The first branch pipe 211 is connected to the multiple second branch pipes 212, and one end of the reinforcement is welded to the bracket 1, and the other end is welded and fixed to the second branch pipe 212.

[0040] Please refer to the attached Figure 1 -Attached Figure 3 Further, the reinforcement member includes a reinforcement plate 42 , one end of which is fixed on the bracket 1 , and the other end of which is provided with a limiting groove 421 that matches the shape of the second branch pipe 212 , and the second branch pipe 212 is fixed in the limiting groove 421 .

[0041] In this embodiment, for each second branch pipe 212, a reinforcing plate 42 is correspondingly provided on the bracket 1. At the same time, in order to adapt to the cylindrical second branch pipe 212, a limiting groove 421 matching the second branch pipe 212 is provided on the reinforcing plate 42, so that the second branch pipe 212 is placed in the limiting groove 421, and the limiting groove 421 can ensure the rapid positioning and installation of the branch pipe 21. At the same time, the second branch pipe 212 is welded to the inner wall of the limiting groove 421 to ensure that the second branch pipe 212 is stably connected to the reinforcing plate 42.

[0042] The reinforcing plate 42 and the bracket 1 are both made of metal materials, and stainless steel can be conventionally used. The reinforcing plate 42 can be connected to the bracket 1 by welding methods such as brazing or spot welding. Of course, in other embodiments, the two can also be connected by detachable methods such as screwing; the inner wall of the limit groove 421 at the other end of the reinforcing plate 42 can be directly welded to the branch pipe 21. The welding method can not only ensure the overall strength of the connection structure, but also reduce the use of redundant connecting parts and improve the assembly performance.

[0043] Furthermore, the reinforcing plate 42 is a quadrilateral, the limiting groove 421 is a semicircular, and the radius of the limiting groove 421 is equal to the radius of the second branch pipe 212 .

[0044] The reinforcing plate 42 is a quadrilateral plate, which can be a square plate. Usually, the branch pipe 21 is a cylindrical structure with a standard radius value. In order to adapt to the welding requirements and the shape of the branch pipe 21, the limiting groove 421 is semicircular, and its radius is the same as the radius of the branch pipe 21, which can ensure that the welding state along the semicircle is the same, thereby reducing the difficulty of welding.

[0045] Please refer to the attached Figure 4 In this embodiment, in addition to being implemented in the form of a reinforcing plate 42, the reinforcing member can also be implemented in the form of a supporting block.

[0046] Optionally, the branch pipe 21 includes a first branch pipe 211 and a plurality of second branch pipes 212, one end of each second branch pipe 212 is connected to the first branch pipe 211, the other end of each second branch pipe 212 is connected to the desiccant 3, the second branch pipe 212 is connected to the bracket 1, and the reinforcement is disposed between the bracket 1 and the first branch pipe 211 and abuts against the first branch pipe 211. The reinforcement includes a cushion block 41, the cushion block 41 is fixed on the bracket 1, and the first branch pipe 211 is pressed against the cushion block 41.

[0047] In this embodiment, the first branch pipe 211 is arranged in the horizontal direction, and the multiple second branch pipes 212 are arranged in the vertical direction. The bracket 1 is an angle steel fixedly arranged in the horizontal direction. Therefore, the first branch pipe 211 and the bracket 1 remain in a parallel state, and the second branch pipe 212 and the bracket 1 remain in a vertical state. The cushion block 41 is first arranged on the top wall of the bracket 1 and fixed to the bracket 1 by welding or screwing. The cushion block 41 extends a certain distance toward the branch pipe 21 and makes the first branch pipe 211 press against the cushion block 41. Through the cushion block 41, the gravity of the multiple desiccant absorbers 3 can directly act on the cushion block 41. Furthermore, the cushion block 41 transmits the force to the bracket 1 in a fixed state, thereby ensuring that the top sealing joint of the connecting pipe 2 is not subject to drag force, and the cushion block 41 has a simple structure and is easy to install.

[0048] Furthermore, the cushion block 41 is a hollow block with a rectangular cross section.

[0049] In this embodiment, the cushion block 41 is a hollow structure, which can reduce the weight of the entire fixed structure, reduce the use of materials, and reduce costs. Optionally, a limiting ring 11 is provided on the bracket 1, and the limiting ring 11 is a U-shaped structure. The two straight arms of the limiting ring 11 are inserted into the positioning holes of the bracket 1 and have an interference fit with the positioning holes. The limiting ring 11 is sleeved on the branch pipe 21.

[0050] In this embodiment, the limit ring 11 can ensure the horizontal limitation of the branch pipe 21. The limit ring 11 is a metal part and has a U-shaped structure as a whole. The U-shaped groove is used to cooperate with the wall of the branch pipe 21 for limitation. In this embodiment, the limit ring 11 only has a limiting effect on the branch pipe 21, and there is no interaction between the two. Therefore, the limit ring 11 does not need to have too high strength.

[0051] Please refer to the attached Figure 5 Optionally, the bracket 1 includes a first plate 12 and a second plate 13 connected at an angle, the first plate 12 is used to connect the reinforcement, and the second plate 13 is connected to the branch pipe 21.

[0052] In this embodiment, the bracket 1 is an angle steel, the first plate 12 and the second plate 13 are arranged at right angles, the plane where the first plate 12 is located is parallel to the horizontal plane, and the plane where the second plate 13 is located is parallel to the vertical plane. The bracket 1 adopts the form of angle steel, which improves the level of standardized selection. Specifically, a through hole 131 is provided at a corresponding position of the second plate 13, and the two straight arms of the limit ring 11 are inserted into the through hole 131, and the connection between the limit ring 11 and the bracket 1 is achieved by interference fit.

[0053] Optionally, the connecting pipe 2 further includes a plurality of main pipes 22 connected in sequence, wherein one end of one main pipe 22 is connected to the branch pipe 21 , and adjacent main pipes 22 are connected via a flange 23 or a first butterfly valve 24 .

[0054] In this embodiment, the flange 23 can realize the communication and connection of the multi-section main pipe 22, and the first butterfly valve 24 can realize the communication, connection and communication state control of the main pipe 22, and the first butterfly valve 24 can be disassembled. Usually, the length of the main pipe 22 is relatively long. If the main pipe 22 adopts an integrated structure, it is not convenient to transport. The main pipe 22 of this embodiment adopts a split multi-section detachable structure, and the adjacent main pipes 22 are connected by the flange 23 or the first butterfly valve 24, which can be conveniently transported. Specifically, the installer can transport the multi-section main pipe 22 to the installation station and connect the multi-section main pipe 22 in sequence, thereby effectively reducing the difficulty of transportation.

[0055] Optionally, the connecting pipe 2 further includes an exhaust pipe 25 arranged in parallel with the main pipe 22 , the exhaust pipe 25 is arranged against the side wall of the bracket 1 , the exhaust pipe 25 is fixedly connected to the bracket 1 , and the exhaust pipe 25 is connected to a section of the main pipe 22 via a second butterfly valve 26 .

[0056] In this embodiment, the exhaust pipe 25 is mainly used to balance the internal and external air pressures. An intermediate pipe 28 is provided between the main pipe 22 and the exhaust pipe 25. A second butterfly valve 26 is provided on the intermediate pipe 28 to control the connectivity between the exhaust pipe 25 and the main pipe 22, so as to facilitate the operator to adjust the flow pressure and exhaust as required.

[0057] The connecting pipe 2 also includes an oil filling and discharging pipe 27 arranged in parallel with the main pipe 22. The oil filling and discharging pipe 27 is used to fill and discharge the insulating oil in the oil storage cabinet.

[0058] It is to be understood that the “equal” in the present application is not absolute equality and a certain engineering error is allowed.

[0059] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. The fixing structure of the connecting pipe is characterized in that: include: Bracket (1); A connecting pipe (2), one end of the connecting pipe (2) is provided with a branch pipe (21), the branch pipe (21) is connected to the desiccant (3), and the branch pipe (21) is connected to the bracket (1); A reinforcing member, wherein the reinforcing member is fixed on the bracket (1) and connected to the branch pipe (21), and the reinforcing member is used to support the branch pipe (21).

2. The fixing structure of the connecting pipe according to claim 1, characterized in that: The branch pipe (21) comprises a first branch pipe (211) and a plurality of second branch pipes (212); one end of each of the second branch pipes (212) is connected to the first branch pipe (211); the other end of each of the second branch pipes (212) is connected to the desiccant (3); the second branch pipe (212) is connected to the bracket (1); and the reinforcement is arranged between the bracket (1) and the first branch pipe (211), and is in contact with the first branch pipe (211).

3. The fixing structure of the connecting pipe according to claim 2, characterized in that: The reinforcement member comprises a cushion block (41), the cushion block (41) is fixed on the bracket (1), and the first branch pipe (211) is pressed against the cushion block (41).

4. The fixing structure of the connecting pipe according to claim 1, characterized in that: The branch pipe (21) comprises a first branch pipe (211) and a plurality of second branch pipes (212); one end of the second branch pipe (212) is connected to the first branch pipe (211); the other end of the second branch pipe (212) is connected to the desiccant (3); the second branch pipe (212) is connected to the bracket (1); and the reinforcement is fixedly connected to the second branch pipe (212).

5. The fixing structure of the connecting pipe according to claim 4, characterized in that: The reinforcing member comprises a reinforcing plate (42), one end of the reinforcing plate (42) is fixed to the bracket (1), and the other end is provided with a limiting groove (421) that matches the shape of the second branch pipe (212), and the second branch pipe (212) is fixed in the limiting groove (421).

6. The fixing structure of the connecting pipe according to claim 5, characterized in that: The reinforcing plate (42) is a quadrilateral, the limiting groove (421) is a semicircular shape, and the radius of the limiting groove (421) is equal to the radius of the second branch pipe (212).

7. The fixing structure of the connecting pipe according to claim 1, characterized in that: The bracket (1) is provided with a limiting ring (11), the limiting ring (11) is a U-shaped structure, two straight arms of the limiting ring (11) are inserted into the positioning holes of the bracket (1) and are interference fit with the positioning holes, and the limiting ring (11) is sleeved on the branch pipe (21).

8. The fixing structure of the connecting pipe according to claim 1, characterized in that: The bracket (1) comprises a first plate (12) and a second plate (13) connected at an angle, wherein the first plate (12) is used to connect the reinforcement member, and the second plate (13) is connected to the branch pipe (21).

9. The fixing structure of the connecting pipe according to any one of claims 1 to 8, characterized in that: The connecting pipe (2) further comprises a plurality of main pipes (22) connected in sequence, wherein one end of one main pipe (22) is connected to the branch pipe (21), and adjacent main pipes (22) are connected via a flange (23) or a first butterfly valve (24).

10. The fixing structure of the connecting pipe according to claim 9, characterized in that: The connecting pipe (2) further comprises an exhaust pipe (25) arranged in parallel with the main pipe (22); the exhaust pipe (25) is fixedly connected to the bracket (1); and the exhaust pipe (25) is connected to a section of the main pipe (22) via a second butterfly valve (26).

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