Capsule inflating device for oil conservator of transformer

Abstract

The utility model relates to a transformer conservator capsule inflating device which comprises an inflating pipeline, a flange plate used for being connected with a transformer conservator capsule is arranged at one end of the inflating pipeline, and the other end of the inflating pipeline is connected to a gas cylinder. A first branch pipe is arranged on the side wall of the inflation pipeline, and an air pressure sensor for collecting internal air pressure and an inductive switch module which is started when the internal air pressure reaches a preset threshold value are arranged in the first branch pipe; the air pressure sensor is connected with the inductive switch module. When the gas cylinder is utilized to inflate the transformer expansion tank capsule, the gas pressure sensor automatically collects the inflation gas pressure, when the inflation gas pressure reaches the preset threshold value, the induction switch module in the first branch pipe is automatically opened, the gas in the gas cylinder is not inflated into the transformer expansion tank capsule any more, and therefore the effect of accurately controlling the inflation gas pressure is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer maintenance, in particular to a transformer oil pillow capsule inflation device. Background Art

[0002] In the current power system, there are more and more transformers that have been in operation for more than 10 years. With the aging of equipment components, after maintenance, due to the difference in maintenance process, the oil pillow capsule of the oil-immersed transformer in operation has poor breathing effect and cannot normally reflect the actual oil level. For this reason, it is necessary to inflate the transformer oil pillow breather during operation.

[0003] The traditional way of inflation is to connect the oil pillow breather flange with a leather hose and inflate the breather directly with a gas cylinder during transformer maintenance. The process is simple and crude, and it is impossible to accurately inflate the breather. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a transformer oil pillow capsule inflation device to solve the problems in the prior art.

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

[0006] The utility model provides a transformer oil pillow capsule inflation device, comprising an inflation pipe, one end of which is provided with a flange for connecting the transformer oil pillow capsule, and the other end of which is connected to a gas cylinder;

[0007] A first branch pipe is provided on the side wall of the inflation pipe, and an air pressure sensor for collecting internal air pressure and an induction switch module that is turned on when the internal air pressure reaches a preset threshold are provided in the first branch pipe; the air pressure sensor is connected to the induction switch module.

[0008] In one embodiment of the present application, the inductive switch module includes a controller for generating a control signal when the internal air pressure reaches a preset threshold, a signal amplifier for amplifying the control signal, and an electrically controlled valve for performing a closing action based on the amplified control signal;

[0009] The air pressure sensor is connected to the controller, the controller is connected to the input end of the signal amplifier, and the output end of the signal amplifier is connected to the electric-controlled valve.

[0010] In one embodiment of the present application, the inflation pipe is further provided with a second branch pipe located between the flange and the first branch pipe, and a pressure gauge for displaying the air pressure value is provided at the end of the second branch pipe.

[0011] In one embodiment of the present application, a gas nozzle is provided at the other end of the inflation pipe, and the other end of the inflation pipe is connected to the gas cylinder through the gas nozzle.

[0012] In one embodiment of the present application, the inflation pipe is further provided with a one-way valve located between the first branch pipe and the flange and a butterfly valve located between the first branch pipe and the gas cylinder.

[0013] The beneficial effects of the utility model are as follows: the utility model is a transformer oil pillow capsule inflation device, comprising an inflation pipe, one end of which is provided with a flange for connecting the transformer oil pillow capsule, and the other end of the inflation pipe is connected to a gas cylinder; a first branch pipe is provided on the side wall of the inflation pipe, and an air pressure sensor for collecting internal air pressure and an inductive switch module that is turned on when the internal air pressure reaches a preset threshold are provided in the first branch pipe; the air pressure sensor is connected to the inductive switch module. When the gas cylinder is used to inflate the transformer oil pillow capsule, the air pressure sensor automatically collects the inflation pressure, and when the inflation pressure reaches the preset threshold, the inductive switch module in the first branch pipe automatically opens, and the gas in the gas cylinder is no longer filled into the transformer oil pillow capsule, thereby achieving the effect of accurately controlling the inflation pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0015] Figure 1 It is a structural schematic diagram of a transformer oil pillow capsule inflation device of the utility model;

[0016] 1- inflation pipe, 2- flange, 3- first branch pipe, 4- check valve, 5- butterfly valve, 6- electric control valve, 7- second branch pipe, 8- pressure gauge, 9- air nozzle. DETAILED DESCRIPTION

[0017] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0018] It should be noted that the illustrations provided in the following embodiments are only used to schematically illustrate the basic concept of the present invention. Therefore, the drawings only show the layers related to the present invention rather than being drawn according to the number, shape and size of the layers in actual implementation. In actual implementation, the type, quantity and proportion of each layer may be changed arbitrarily, and the layer layout may also be more complicated.

[0019] In the following description, numerous details are discussed to provide a more thorough explanation of the embodiments of the present invention; however, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without these specific details.

[0020] like Figure 1 As shown, the present application includes an air filling pipe 1, one end of which is provided with a flange 2 for connecting to a transformer oil pillow capsule, and the other end of the air filling pipe 1 is connected to a gas cylinder;

[0021] A first branch pipe 3 is provided on the side wall of the inflation pipe 1, and an air pressure sensor for collecting internal air pressure and an induction switch module that is turned on when the internal air pressure reaches a preset threshold are provided in the first branch pipe 3; the air pressure sensor is connected to the induction switch module.

[0022] The inductive switch module includes a controller for generating a control signal when the internal air pressure reaches a preset threshold, a signal amplifier for amplifying the control signal, and an electrically controlled valve 6 for performing a closing action based on the amplified control signal;

[0023] The air pressure sensor is connected to the controller, the controller is connected to the input end of the signal amplifier, and the output end of the signal amplifier is connected to the electric control valve 6. The signal amplifier can be a current signal amplifier, a voltage signal amplifier, etc. The electric control valve 6 can be a solenoid valve.

[0024] The inflation pipe 1 is also provided with a second branch pipe 7 between the flange 2 and the first branch pipe 3, and a pressure gauge 8 for displaying the air pressure value is provided at the end of the second branch pipe 7. The pressure gauge 8 is used to intuitively display the inflation pressure and verify the closing action of the induction switch module.

[0025] The other end of the inflation pipe 1 is provided with a gas nozzle 9, and the other end of the inflation pipe 1 is connected to the gas cylinder through the gas nozzle 9. The gas nozzle 9 can ensure good sealing between the gas cylinder and the inflation pipe 1.

[0026] The inflation pipe 1 is also provided with a one-way valve 4 between the first branch pipe 3 and the flange 2 and a butterfly valve 5 between the first branch pipe 3 and the gas cylinder. The butterfly valve 5 is used to control the inflation flow of the gas cylinder.

[0027] The specific operation process of this application includes:

[0028] 1. Determine the working area and provide stable support for the aerial work vehicle;

[0029] 2. Check the safe distance from live equipment;

[0030] 3. Observe and measure the transformer oil and oil level curve plate to see if they are normal, and the oil level indication is the real oil level;

[0031] 4. Remove the transformer oil pillow breather;

[0032] 5. The connecting valve between the upper part of the oil storage cabinet and the main body should be kept closed;

[0033] 6. Fill dry nitrogen through the device in this application, and adjust the inflation speed through the butterfly valve. When you hear the exhaust sound from the second branch pipe, it means that the inflation pressure has reached the preset threshold, and then close the butterfly valve. Because the transformer in operation is inflated, the inflation pressure is less than 0.02Mpa during the inflation process to prevent excessive pressure from causing the pressure relief valve to operate;

[0034] 7. Restore the scene and observe whether the respirator is normal.

[0035] In this application, the inflation pressure can be observed during the inflation process, and the inflation pressure is automatically closed when the preset threshold is reached, which is convenient to use. The inflation threshold is adjustable and a variety of transformers are used. The size of the inflation pressure can be controlled in real time through a butterfly valve; the inflation device is simple and convenient, easy to install, and relatively intuitive.

[0036] In the above embodiments, although the utility model has been described in conjunction with the specific embodiments of the utility model, many replacements, modifications and variations of these embodiments will be apparent to those of ordinary skill in the art based on the foregoing description. The embodiments of the utility model are intended to cover all such replacements, modifications and variations that fall within the broad scope of the appended claims.

[0037] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A transformer oil pillow capsule inflation device, characterized in that: It comprises an air filling pipe (1), one end of which is provided with a flange (2) for connecting to a transformer oil pillow capsule, and the other end of which is connected to a gas cylinder; A first branch pipe (3) is provided on the side wall of the inflation pipe (1), and an air pressure sensor for collecting internal air pressure and an induction switch module that is turned on when the internal air pressure reaches a preset threshold are provided in the first branch pipe (3); the air pressure sensor is connected to the induction switch module.

2. A transformer oil pillow capsule inflation device according to claim 1, characterized in that: The inductive switch module comprises a controller for generating a control signal when the internal air pressure reaches a preset threshold, a signal amplifier for amplifying the control signal, and an electrically controlled valve (6) for performing a closing action based on the amplified control signal; The air pressure sensor is connected to the controller, the controller is connected to the input end of the signal amplifier, and the output end of the signal amplifier is connected to the electrically controlled valve (6).

3. A transformer oil pillow capsule inflation device according to claim 1, characterized in that: The inflation pipe (1) is also provided with a second branch pipe (7) located between the flange (2) and the first branch pipe (3), and a pressure gauge (8) for displaying the air pressure value is provided at the end of the second branch pipe (7).

4. A transformer oil pillow capsule inflation device according to claim 1, characterized in that: The other end of the inflation pipe (1) is provided with a gas nozzle (9), and the other end of the inflation pipe (1) is connected to the gas cylinder via the gas nozzle (9).

5. The transformer oil pillow capsule inflation device according to claim 1, characterized in that: The inflation pipe (1) is also provided with a one-way valve (4) located between the first branch pipe (3) and the flange (2), and a butterfly valve (5) located between the first branch pipe (3) and the gas cylinder.

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