Auxiliary device for replacing oil valve gasket of transformer

Abstract

The utility model relates to the technical field of transformer maintenance, in particular to an auxiliary device for replacing a gasket of an oil valve of a transformer, which comprises a buckle, an adjusting rod and a top core assembly, the buckle is of a split structure and is installed on the fixed valve body. The ejector core assembly comprises a supporting rod and an ejector rod, the supporting rod is located on one side of the movable valve body, the two ends of the supporting rod are connected with buckles through adjusting rods, a gasket to be installed is connected to the ejector rod in a sleeved mode, and the adjusting rods can enable the buckles to be connected to the inner side of a flange of the fixed valve body in a clamped mode and enable the ejector rod to abut against the valve element. According to the utility model, the problems of tedious gasket replacement process and oil leakage under normal production conditions are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer maintenance, in particular to an auxiliary device for replacing a transformer oil valve gasket. Background Art

[0002] Nowadays, transformers are essential devices in power plants, substations and other power industries. After years of erosion and long-term use, the gaskets at the connection of the ball valve of the transformer oil outlet valve will age. Replacing the gaskets can effectively prevent the valve from leaking oil or even oil.

[0003] At present, when replacing transformer oil valve gaskets, they are usually replaced in the absence of oil, or a special air bag is pumped into the ball valve with an air pump to inflate and block it. For example, a transformer valve replacement device is disclosed in the utility model patent with publication number CN 217061696U. The absence of oil affects the production process, and the use of air bags is cumbersome to operate and has a certain risk of oil leakage, and it is impossible to completely block the oil tank from leaking. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the embodiments of the utility model is to provide an auxiliary device for replacing transformer oil valve gaskets, so as to solve the problems of cumbersome gasket replacement process and oil leakage under normal production conditions.

[0005] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:

[0006] An auxiliary device for replacing a transformer oil valve gasket comprises: a buckle, an adjusting rod and a top core assembly; the buckle is a split structure, and the buckle is installed on a fixed valve body; the top core assembly comprises a support rod and a push rod, the support rod is located on one side of the movable valve body, the two ends of the support rod are connected to the buckle through the adjusting rod, the gasket to be installed is sleeved on the push rod, and the adjusting rod can clamp the buckle to the inner side of the flange of the fixed valve body and push the push rod onto the valve core.

[0007] Optionally, the buckle is a plate-like structure with a clamping hole at the center of the buckle. The buckle is divided into two pieces from the middle, and the two buckles are respectively installed on both sides of the fixed valve body.

[0008] Optionally, the support rod is a square tube structure, through holes for installing the adjustment rod are opened at both ends of the support rod, and the push rod is connected to the middle of the support rod and is located on the side of the support rod facing the buckle.

[0009] Optionally, a tray is provided at one end of the push rod facing the buckle, the tray abuts against the valve core, and the diameter of the tray is greater than the diameter of the push rod.

[0010] Optionally, a spherical surface is provided on one end of the tray facing the buckle, and the spherical surface of the tray matches the spherical surface of the valve core.

[0011] Optionally, there are at least two adjusting rods, wherein at least one adjusting rod connects a buckle and one end of the support rod, and at least one adjusting rod connects another buckle and the other end of the support rod.

[0012] Optionally, the adjusting rod is a threaded rod, and both ends of the threaded rod are locked by nuts.

[0013] The embodiment of the utility model also provides an auxiliary device for replacing a transformer oil valve gasket, comprising: a clip, a connecting rod and a top core assembly; the clip is a split structure, and the clip is installed on a fixed valve body; the top core assembly comprises a support rod and a telescopic rod, the support rod is located on one side of the movable valve body, and the two ends of the support rod are connected to the clip through a connecting rod, the gasket to be installed is sleeved on the telescopic rod, the telescopic rod is pressed on the valve core, and the clip is clipped to the inner side of the flange of the fixed valve body.

[0014] The embodiment of the utility model also provides an auxiliary device for replacing the gasket of a transformer oil valve, comprising: a clip, a driving mechanism and a top core assembly; the clip is a split structure, and the clip is installed on a fixed valve body; the top core assembly comprises a support rod and a push rod, the support rod is located on one side of the movable valve body, the two ends of the support rod are connected to the clip through an adjusting rod, the gasket to be installed is sleeved on the push rod, the driving mechanism is installed on the support rod, the driving mechanism is connected to the clip through the driving rod, and the driving rod can clip the clip to the inner side of the flange of the fixed valve body and push the push rod onto the valve core.

[0015] The embodiment of the utility model also provides an auxiliary device for replacing a transformer oil valve gasket, comprising: a buckle, a driving mechanism and a top core assembly; the buckle is a split structure, and the buckle is installed on a fixed valve body; the top core assembly comprises a support rod and a push rod, the support rod is located on one side of the movable valve body, the two ends of the support rod are connected to the buckle through an adjusting rod, the gasket to be installed is sleeved on the push rod, the driving mechanism is installed on the buckle, the driving mechanism is connected to the support rod through the driving rod, and the driving rod can clamp the buckle to the inner side of the flange of the fixed valve body and push the push rod onto the valve core.

[0016] One or more technical solutions provided in the embodiments of the present utility model have at least the following technical effects or advantages:

[0017] The utility model can replace the gasket when there is oil in the transformer oil tank, without affecting normal production. The valve core of the ball valve is supported by the push rod, and the ball valve gasket to be replaced is inserted into the push rod in advance, and then the movable valve body is loosened and replaced with a new gasket. Compared with the traditional method, a large amount of transformer oil leakage is avoided, and the work of workers during the replacement process is convenient, thereby improving work efficiency and work quality.

[0018] Additional advantages of the present invention will be given in the following description, and some will become apparent from the following description or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0020] Figure 1 It is a three-dimensional diagram of the auxiliary device provided in Example 1 of the utility model;

[0021] Figure 2 It is a right side view of the auxiliary device provided in Example 1 of the utility model;

[0022] Figure 3 It is a top view of the auxiliary device provided in Example 1 of the utility model;

[0023] Figure 4 It is a front view provided by Embodiment 1 of the present utility model;

[0024] In the figure: 1. Buckle; 2. Adjustment rod; 3. Support rod; 4. Push rod; 5. Tray;

[0025] In order to show the positions of various parts, the distances or sizes between them are exaggerated and the schematic diagram is for reference only. DETAILED DESCRIPTION

[0026] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0027] Nowadays, transformers are essential and important devices in the power industry, such as power plants and substations. The oil outlet valve (i.e., oil valve) of the transformer includes a fixed valve body, a movable valve body, and a valve core. The valve core is spherical and is located between the fixed valve body and the movable valve body. The ends of the fixed valve body and the movable valve body are both provided with flanges for connection. The movable valve body is connected to the fixed valve body by bolts, and the valve core and the valve body are sealed by a gasket. The gasket is an annular gasket that can be bent and deformed to a certain extent. The work of replacing the ball valve gasket is indispensable. When replacing the gasket, removing the valve body of the oil outlet valve will cause the transformer oil in the oil tank to leak out, and a way is needed to prevent the ball valve from leaking oil. Utility model patent CN 217061696 U mainly uses the airbag and connecting rod inflation combination to play a role in blocking the leakage of transformer oil. This method is cumbersome to operate and is accompanied by a certain risk of oil leakage. It is impossible to completely block the oil tank from leaking oil. In order to solve the above technical problems, the utility model proposes an auxiliary device for replacing the transformer oil valve gasket.

[0028] Example 1

[0029] like Figure 1 As shown, in one embodiment of the utility model, an auxiliary device for replacing a transformer oil valve gasket is proposed, the auxiliary device comprising: a buckle 1, an adjusting rod 2 and a top core assembly; the buckle 1 is a split structure, and the buckle 1 is installed on a fixed valve body; the top core assembly comprises a support rod 3 and a push rod 4, the support rod 3 is located on one side of the movable valve body, and both ends of the support rod 3 are connected to the buckle 1 through the adjusting rod 2, the gasket to be installed (new gasket) is sleeved on the push rod 4, and the adjusting rod 2 can clamp the buckle 1 on the inner side of the flange of the fixed valve body and push the push rod 4 on the valve core.

[0030] When replacing the gasket of the auxiliary device of the utility model, firstly, a new gasket is put on the middle push rod 4, the buckle 1 is clamped on the inner side of the flange of the fixed valve body through the adjusting rod 2, and the push rod 4 is pushed on the valve core. At this time, the ball valve core will be firmly fixed by the auxiliary device, and the valve core will be in a closed state. At this time, when the flange of the movable valve body is loosened, the valve core will be fixed on the inner side of the valve and in a closed state. The new gasket replaces the old gasket to complete the replacement of the gasket.

[0031] The utility model can replace the gasket when there is oil in the transformer oil tank without affecting normal production. The valve core of the ball valve is supported by the push rod 4, and the ball valve gasket to be replaced is inserted into the push rod 4 in advance, and then the movable valve body is loosened and replaced with a new gasket. Compared with the traditional method, a large amount of transformer oil leakage is avoided, and the work of workers during the replacement process is convenient, thereby improving work efficiency and work quality.

[0032] like Figure 1 , Figure 2As shown, the buckle 1 is a plate-like structure, with a clamping hole in the center of the buckle 1. The buckle 1 is divided into two pieces from the middle, and the two pieces of the buckle 1 are respectively installed on both sides of the fixed valve body. The buckle 1 is made of rigid material and plays the role of clamping the entire auxiliary device on the oil outlet pipeline valve.

[0033] like Figure 3 , Figure 4 As shown, the support rod 3 is a square tube structure, and through holes for installing the adjusting rod 2 are opened at both ends of the support rod 3. The push rod 4 is connected to the middle of the support rod 3 and is located on the side of the support rod 3 facing the buckle 1. The support rod 3 is used to install the push rod 4 and provide support force for the push rod 4 to tighten the valve core.

[0034] like Figure 3 , Figure 4 As shown, a tray 5 is provided at one end of the push rod 4 facing the buckle 1, and the tray 5 abuts against the valve core, and the diameter of the tray 5 is larger than the diameter of the push rod 4. By providing a tray 5 with a larger diameter at the left end of the push rod 4, the contact area with the valve core is increased, so that the cooperation with the valve core is more stable. Further, a spherical surface is provided at one end of the tray 5 facing the buckle 1, and the spherical surface of the tray 5 matches the spherical surface of the valve core. The "matching" includes at least one of the following two situations: the diameter of the spherical surface of the tray 5 is equal to the diameter of the spherical surface of the valve core. Alternatively, the diameter of the spherical surface of the tray 5 is slightly larger than the diameter of the spherical surface of the valve core. The push rod 4 is used to support the spherical valve core to prevent oil leakage. Compared with the traditional method, the anti-leakage effect is better and the operation is more convenient. Moreover, by providing a spherical surface on the tray 5, damage to the valve core is avoided while ensuring tight and stable support.

[0035] There are at least two adjusting rods 2, at least one of which connects one buckle 1 and one end of the support rod 3, and at least one of which connects another buckle 1 and the other end of the support rod 3. The adjusting rod 2 is a threaded rod, and both ends of the threaded rod are locked by nuts. The threaded rod is composed of conventional bolts, and the nuts and bolts cooperate to play an adjusting role.

[0036] The buckle 1 and the support rod 3 are connected by an adjusting bolt, and can be firmly fixed on the transformer valve when in use. The push rod 4 just supports the valve core of the ball valve, and firmly supports the valve body under the reaction of the support rod 3. The push rod 4 is designed to be a spherical groove type, which can be embedded with the valve core. The adjusting bolt can be adjusted with a wrench to adapt to different types of ball valves.

[0037] How to use the above auxiliary devices:

[0038] First, insert the new gasket into the middle push rod 4, use the buckles 1 on both sides to install the auxiliary device on the fixed valve body, and use the bolts on both sides to fix the auxiliary device. At this time, the valve core of the ball valve will be firmly fixed by the push rod 4, and the valve core will always be in a closed state. At this time, loosen the flange of the movable valve body, and the valve core will always be fixed inside the valve and in a closed state. Take out the gasket that was previously inserted into the middle push rod 4 from the flange mouth and replace the gasket.

[0039] The utility model uses the middle push rod 4 to fix the valve core of the transformer ball valve to the pipeline, so that when the valve is disassembled, the valve core is always fixed on the inside of the valve. The gasket to be replaced is placed in the push rod 4 in advance, and the valve gasket can be easily replaced. Even if the outside of the ball valve is removed, the valve can be guaranteed not to leak oil. Compared with the existing device, this device is more convenient and simple, and the working principle is simpler and firmer than that of the airbag filling. It solves the working procedure of replacing the ball valve gasket of the transformer in the current substation and various power distribution projects, so that the work effect of replacing the gasket can be completed more effectively under the action of the device during the operation. It has the advantages of reuse, high safety, and improved construction efficiency.

[0040] Example 2

[0041] The difference between this embodiment and embodiment 1 is that the tightening method is different. In embodiment 1, tightening is performed by adjusting rod 2 (i.e., bolt), which has the advantages of simple structure and low cost. In this embodiment, a telescopic rod is used for tightening. Specifically, the auxiliary device includes: a buckle 1, a connecting rod and a top core assembly; the buckle 1 is a split structure, and the buckle 1 is installed on the fixed valve body; the top core assembly includes a support rod 3 and a telescopic rod, and the support rod 3 is located on one side of the movable valve body, and the two ends of the support rod 3 are connected to the buckle 1 through a connecting rod, and the gasket to be installed is sleeved on the telescopic rod, and the telescopic rod is pressed on the valve core, and the buckle 1 is clamped on the inner side of the flange of the fixed valve body.

[0042] The connecting rod only serves to connect the buckle 1 and the support rod 3 and is not adjusted. The telescopic rod can be a piston rod of an oil cylinder or a piston rod of an air cylinder, that is, a small oil cylinder or a small air cylinder is installed on the support rod 3, and the auxiliary device is installed on the valve and the valve core is tightened by the drive of the oil cylinder or the air cylinder.

[0043] Example 3

[0044] The difference between this embodiment and embodiment 1 is that the tightening method is different. In embodiment 1, tightening is performed by adjusting rod 2 (i.e. bolt), which has the advantages of simple structure and low cost. In this embodiment, a driving mechanism installed on support rod 3 is used for tightening. Specifically, the auxiliary device includes: buckle 1, driving mechanism and top core assembly; the buckle 1 is a split structure, and the buckle 1 is installed on the fixed valve body; the top core assembly includes support rod 3 and top rod 4, the support rod 3 is located on one side of the movable valve body, and the two ends of the support rod 3 are connected to the buckle 1 through the adjusting rod 2, the gasket to be installed is sleeved on the top rod 4, the driving mechanism is installed on the support rod 3, and the driving mechanism is connected to the buckle 1 through the driving rod, and the driving rod can clamp the buckle 1 to the inner side of the flange of the fixed valve body and push the top rod 4 on the valve core.

[0045] In this embodiment, a small oil cylinder or air cylinder is installed at both ends of the support rod 3, and the end of the driving rod (i.e., the piston rod) of the oil cylinder or air cylinder is connected to the buckle 1. Under the drive of the oil cylinder or air cylinder, the buckle 1 moves toward the support rod 3, thereby installing the auxiliary device on the valve and tightening the valve core at the same time.

[0046] Example 4

[0047] The difference between this embodiment and embodiment 3 is that the installation position of the driving mechanism is different. Specifically, the auxiliary device includes: a buckle 1, a driving mechanism and a top core assembly; the buckle 1 is a split structure, and the buckle 1 is installed on the fixed valve body; the top core assembly includes a support rod 3 and a top rod 4, the support rod 3 is located on one side of the movable valve body, and the two ends of the support rod 3 are connected to the buckle 1 through the adjustment rod 2, the gasket to be installed is sleeved on the top rod 4, the driving mechanism is installed on the buckle 1, and the driving mechanism is connected to the support rod 3 through the driving rod, and the driving rod can clamp the buckle 1 on the inner side of the flange of the fixed valve body and push the top rod 4 on the valve core.

[0048] In this embodiment, an oil cylinder or an air cylinder is respectively installed on the buckles 1 on both sides, and the ends of the driving rods (i.e., piston rods) of the oil cylinder or the air cylinder are connected to the two ends of the support rod 3. Under the drive of the oil cylinder or the air cylinder, the support rod 3 moves toward the buckle 1, thereby installing the auxiliary device on the valve and tightening the valve core at the same time.

[0049] Although the above describes the specific implementation methods of the utility model in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. An auxiliary device for replacing a transformer oil valve gasket, the oil valve comprising a fixed valve body, a movable valve body and a valve core, the ends of the fixed valve body and the movable valve body both having flanges for connection, characterized in that: The auxiliary device includes: a buckle, an adjustment rod and a top core assembly; The buckle is a split structure, and the buckle is installed on the fixed valve body; the top core assembly includes a support rod and a push rod, the support rod is located on one side of the movable valve body, the two ends of the support rod are connected to the buckle through an adjusting rod, the gasket to be installed is sleeved on the push rod, and the adjusting rod can clamp the buckle to the inner side of the flange of the fixed valve body and push the push rod onto the valve core.

2. The auxiliary device for replacing a transformer oil valve gasket according to claim 1, characterized in that: The buckle is a plate-like structure with a clamping hole at the center of the buckle. The buckle is divided into two pieces from the middle, and the two buckles are respectively installed on both sides of the fixed valve body.

3. The auxiliary device for replacing transformer oil valve gasket according to claim 1, characterized in that: The support rod is a square tube structure, and through holes for installing the adjustment rod are opened at both ends of the support rod. The push rod is connected to the middle of the support rod and is located on the side of the support rod facing the buckle.

4. The auxiliary device for replacing a transformer oil valve gasket as claimed in claim 3, characterized in that: A tray is arranged at one end of the push rod facing the buckle, the tray abuts against the valve core, and the diameter of the tray is greater than the diameter of the push rod.

5. The auxiliary device for replacing transformer oil valve gasket according to claim 4, characterized in that: A spherical surface is provided at one end of the tray facing the buckle, and the spherical surface of the tray matches the spherical surface of the valve core.

6. The auxiliary device for replacing transformer oil valve gasket according to claim 2, characterized in that: There are at least two adjusting rods, wherein at least one adjusting rod connects a buckle and one end of the support rod, and at least one adjusting rod connects another buckle and the other end of the support rod.

7. The auxiliary device for replacing a transformer oil valve gasket according to claim 6, characterized in that: The adjusting rod is a threaded rod, and both ends of the threaded rod are locked by nuts.

8. An auxiliary device for replacing a gasket of a transformer oil valve, the oil valve comprising a fixed valve body, a movable valve body and a valve core, the ends of the fixed valve body and the movable valve body both having flanges for connection, characterized in that: The auxiliary device includes: a buckle, a connecting rod and a top core assembly; The buckle is a split structure, and the buckle is installed on the fixed valve body; the top core assembly includes a support rod and a telescopic rod, the support rod is located on one side of the movable valve body, the two ends of the support rod are connected to the buckle through a connecting rod, the gasket to be installed is sleeved on the telescopic rod, the telescopic rod is pushed on the valve core, and the buckle is clamped on the inner side of the flange of the fixed valve body.

9. An auxiliary device for replacing a gasket of a transformer oil valve, the oil valve comprising a fixed valve body, a movable valve body and a valve core, the ends of the fixed valve body and the movable valve body both having flanges for connection, characterized in that: The auxiliary device includes: a buckle, a driving mechanism and a top core assembly; The buckle is a split structure, and the buckle is installed on the fixed valve body; the top core assembly includes a support rod and a push rod, the support rod is located on one side of the movable valve body, both ends of the support rod are connected to the buckle through an adjusting rod, the gasket to be installed is sleeved on the push rod, the driving mechanism is installed on the support rod, the driving mechanism is connected to the buckle through the driving rod, and the driving rod can clamp the buckle to the inner side of the flange of the fixed valve body and push the push rod onto the valve core.

10. An auxiliary device for replacing a transformer oil valve gasket, the oil valve comprising a fixed valve body, a movable valve body and a valve core, the ends of the fixed valve body and the movable valve body both having flanges for connection, characterized in that: The auxiliary device includes: a buckle, a driving mechanism and a top core assembly; The buckle is a split structure, and the buckle is installed on the fixed valve body; the top core assembly includes a support rod and a push rod, the support rod is located on one side of the movable valve body, both ends of the support rod are connected to the buckle through an adjusting rod, the gasket to be installed is sleeved on the push rod, the driving mechanism is installed on the buckle, the driving mechanism is connected to the support rod through the driving rod, and the driving rod can clamp the buckle to the inner side of the flange of the fixed valve body and push the push rod onto the valve core.

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