Transformer gas deflation method and device

Abstract

The invention relates to the technical field of the power industry, in particular to a transformer gas deflation method and device. A threshold value of gas is set, and detected gas pressure is compared with the threshold value; gas in the transformer is absorbed by controlling the gas collecting box; and liquid and gas in the gas collection box are collected. According to the transformer gas deflation method and device, the gas collection box is remotely operated to absorb the gas in the transformer, so that operation and maintenance personnel are prevented from being directly exposed to a harmful gas environment, the safety risk in the operation process is remarkably reduced, and the life safety and body health of the operation and maintenance personnel are protected.

Description

Technical Field

[0001] The present invention relates to the technical field of the electric power industry, and in particular to a transformer gas venting method and device. Background Art

[0002] In the power industry, transformers are one of the core equipment of the power system, and their safe and stable operation is crucial to the reliability of the power grid. However, during the operation of the transformer, due to internal faults or gas intrusion, gases such as gas may be generated. The accumulation of these gases will not only affect the insulation performance of the transformer, but may also cause serious safety accidents.

[0003] Traditional gas emission and degassing operations usually rely on manual on-site operations, which consume a lot of human resources and transportation resources, increase operation and maintenance costs, and are difficult to meet the needs of modern power grids for rapid response and efficient operation and maintenance. To this end, the present invention provides a transformer gas degassing method and device. Summary of the invention

[0004] In view of the problems existing in the above-mentioned existing transformer gas venting methods and devices, the present invention is proposed.

[0005] Therefore, one of the objects of the present invention is to provide a transformer gas venting method and device, the purpose of which is to reduce the need for manual on-site operation.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a transformer gas venting method, comprising:

[0007] By monitoring the transformer gas pressure;

[0008] By setting a threshold value of gas, and comparing the detected gas pressure with the threshold value;

[0009] Absorbing gas from transformer by controlling gas collecting box; and,

[0010] By collecting the liquid and gas in the gas collecting box.

[0011] As a preferred solution of the transformer gas venting method of the present invention, a pressure sensor is provided on the gas collecting box to monitor the internal pressure of the gas collecting box.

[0012] As a preferred solution of the transformer gas venting method of the present invention, the gas and liquid in the gas collecting box are collected by a gas collector and an oil-water collector respectively.

[0013] As a preferred solution of the transformer gas venting method of the present invention, a pressure relief valve is provided in the gas collector.

[0014] As a preferred solution of the transformer gas venting method of the present invention, a solenoid valve is provided between the transformer and the gas collecting box, and a solenoid valve is provided between the gas collecting box and the gas collector and the oil-water collector.

[0015] As a preferred solution of the transformer gas venting method described in the present invention, in order to avoid failure of the solenoid valve control switch and large-scale oil leakage, an electronic valve is set, which is in a normally closed state, opened by electronic control, and closed when power is lost.

[0016] The beneficial effects of this method are as follows: by remotely operating the gas collecting box to absorb the gas in the transformer, the operation and maintenance personnel are prevented from being directly exposed to the harmful gas environment, which significantly reduces the safety risks in the operation process and protects the life safety and physical health of the operation and maintenance personnel.

[0017] Another object of the present invention is to provide a transformer gas venting method and device, the purpose of which is to reduce the need for manual on-site operation.

[0018] In order to solve the above technical problems, the present invention provides the following technical solutions: a transformer gas venting device, comprising:

[0019] A gas collecting box connected to the transformer;

[0020] a discharge unit, comprising a gas collector connected to the gas collecting box; and

[0021] A control unit includes a solenoid valve disposed between the gas collecting box and the transformer, and a solenoid valve disposed between the gas collecting box and the gas collector.

[0022] As a preferred solution of the transformer gas venting device of the present invention, the discharge unit further comprises an oil-water separator connected to the gas collecting box, and a solenoid valve is provided between the gas collecting box and the oil-water separator.

[0023] As a preferred solution of the transformer gas venting device of the present invention, the gas collector is connected to the oil-water separator, and the gas collector is also connected to a pressure relief valve.

[0024] As a preferred solution of the transformer gas venting device of the present invention, a pressure sensor is provided on the gas collecting box.

[0025] The beneficial effects of the present invention are as follows: the gas collecting box can be remotely operated through the solenoid valve to absorb the gas in the transformer, thus avoiding direct exposure of operation and maintenance personnel to a harmful gas environment, significantly reducing the safety risks during the operation process, and protecting the life safety and physical health of the operation and maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0027] Figure 1 The figure is a schematic diagram of the overall process of the transformer gas degassing method of the present invention.

[0028] Figure 2 The figure is a schematic diagram of the overall structure of the transformer gas venting device of the present invention.

[0029] Figure 3 The figure is a schematic diagram of the solenoid valve circuit structure of the transformer gas venting device of the present invention. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one 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 term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0033] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0034] Example 1, reference Figure 1 , which is the first embodiment of the present invention, provides a transformer gas venting method, the method comprising:

[0035] S1. By monitoring the gas pressure of the transformer;

[0036] By monitoring the gas pressure in the transformer in real time and paying close attention to the gas pressure in the transformer at all times, the internal pressure of the transformer can be monitored through sensors.

[0037] S2. By setting the gas threshold, and comparing the detected gas pressure with the threshold

[0038] Set the gas pressure threshold. When the gas pressure in the transformer increases to the threshold, the gas will be discharged in time to protect the safe operation of the transformer.

[0039] S3. By controlling the gas collecting box 100 to absorb gas in the transformer;

[0040] The gas collecting box 100 absorbs the gas in the transformer and stores it. At the same time, water vapor in the transformer will enter the gas collecting box 100 along with the gas in the transformer. A pressure sensor 101 is provided on the gas collecting box 100 to monitor the internal pressure of the gas collecting box 100 and pay real-time attention to the pressure in the gas collecting box 100 to ensure that the gas collecting box 100 can absorb the gas in the transformer at any time.

[0041] Furthermore, a solenoid valve 301 is provided between the transformer and the gas collecting box 100, and the solenoid valve 301 is used to remotely control the transformer to discharge gas into the gas collecting box 100, thereby realizing remote deflation of the transformer.

[0042] S4. By collecting the liquid and gas in the gas box 100;

[0043] The gas collecting box 100 is provided with a pressure sensor 101 for monitoring the internal pressure of the gas collecting box 100 . The gas collecting box 100 is also connected with a gas collector 201 and an oil-water collector, which are used to collect gas and liquid in the gas collecting box 100 respectively.

[0044] Furthermore, a solenoid valve 301 is provided between the gas collecting box 100 and the gas collector 201 and the oil-water collector. The solenoid valve 301 is remotely controlled to open the channel between the gas collecting box 100 and the gas collector 201 and the oil-water collector, so that the gas in the gas collecting box 100 is remotely collected, so that the pressure in the gas collecting box 100 is reduced, ensuring that the gas in the transformer can be collected at all times.

[0045] like Figure 1 As shown, the solenoid valve 301 between the transformer and the gas collecting box 100 is set to No. 1, the solenoid valve 301 between the oil-water collector and the gas collecting box 100 is set to No. 2, and the solenoid valve 301 between the gas collector 201 and the gas collecting box 100 is set to No. 3. During the deflation process, the following steps can be performed by remote control:

[0046] When the No. 1 electromagnetic valve 301 is opened, the gas and liquid in the transformer will enter the gas collecting box 100 , and the pressure sensor 101 can read the pressure value in the gas collecting box 100 .

[0047] Open the No. 3 electromagnetic valve 301, and the gas can enter the needle-tube gas collector 201. After a sufficient amount of gas is collected, close the No. 3 electromagnetic valve 301.

[0048] Open the No. 2 solenoid valve 301, and the liquid can enter the oil-water collector. After a sufficient amount of liquid is collected, close the No. 2 solenoid valve 301.

[0049] Furthermore, a pressure relief valve 203 is provided in the gas collector 201 , and the pressure relief valve 203 can be made of a stainless steel threaded adjustable pressure relief valve. During the execution of the above steps, if the pressure is too high, the excess pressure can be released through the pressure relief valve 203 .

[0050] Furthermore, in order to avoid the situation where the electromagnetic valve 301 control switch fails and a large amount of oil leakage occurs, an electronic valve is provided, which is in a normally closed state, is opened by electric control, and is closed when power is lost.

[0051] The application of this method significantly reduces the need for manual on-site operations, thereby reducing human resource costs, transportation costs, and possible equipment maintenance costs. At the same time, due to the significant improvement in operating efficiency, the power outage time caused by equipment failure or maintenance is reduced, further reducing economic losses.

[0052] Through automation and remote control technology, the device can complete gas deflation operations in a shorter time, improving overall operation and maintenance efficiency, and benefiting the stability and reliability of power supply.

[0053] Example 2, reference Figure 2 and Figure 3 , which is a second embodiment of the present invention, provides a transformer gas venting device, the device comprising:

[0054] The gas collecting box 100 is connected to the transformer and is used to receive the gas in the transformer to avoid the failure of the high-voltage outlet line inside the transformer;

[0055] a discharge unit 200, comprising a gas collector 201 connected to the gas collecting box 100; and

[0056] The control unit 300 includes a solenoid valve 301 disposed between the gas collecting box 100 and the transformer, and a solenoid valve 301 disposed between the gas collecting box 100 and the gas collector 201 .

[0057] The discharge unit 200 also includes an oil-water separator 202 connected to the gas collecting box 100, and a solenoid valve 301 is provided between the gas collecting box 100 and the oil-water separator 202. The oil-water separator 202 and the gas collector 201 are respectively used to receive the liquid and gas in the gas collecting box 100 to avoid excessive pressure in the gas collecting box 100 and ensure that it can receive the gas in the transformer at any time.

[0058] like Figure 2 As shown, the solenoid valve 301 between the transformer and the gas collecting box 100 is set to No. 1, the solenoid valve 301 between the oil-water collector and the gas collecting box 100 is set to No. 2, and the solenoid valve 301 between the gas collector 201 and the gas collecting box 100 is set to No. 3. During the deflation process, the following steps can be performed by remote control:

[0059] Exit the transformer heavy gas protection tripping outlet soft pressure plate through the Baoxin substation.

[0060] When the No. 1 electromagnetic valve 301 is opened, the gas and liquid in the transformer will enter the gas collecting box 100 , and the pressure sensor 101 can read the pressure value in the gas collecting box 100 .

[0061] Open the No. 3 electromagnetic valve 301, and the gas can enter the needle-tube gas collector 201. After a sufficient amount of gas is collected, close the No. 3 electromagnetic valve 301.

[0062] Open the No. 2 solenoid valve 301, and the liquid can enter the oil-water collector. After a sufficient amount of liquid is collected, close the No. 2 solenoid valve 301.

[0063] Furthermore, the gas collector 201 is connected to the oil-water separator 202, and the gas collector 201 is also connected to the pressure relief valve 203. When the No. 3 solenoid valve 301 is opened and the gas collector 201 collects the gas inside the gas collecting box 100, when the collected gas reaches a predetermined value, the remaining gas can be discharged through the pressure relief valve 203. After observing that all the gas in the gas collecting box 100 is released, the No. 3 solenoid valve 301 is closed.

[0064] Furthermore, a pressure sensor 101 is provided on the gas collecting box 100. The pressure value on the pressure sensor 101 is checked and compared with that before deflation. There is no significant change, and the calculated transformer oil level is equivalent to the actual value on the meter. The OCS light gas protection action model is reset. At this time, the No. 1 solenoid valve 301 is closed and the deflation process is completed.

[0065] According to the regulations, the transformer heavy gas protection tripping outlet soft pressure plate is put into operation through the Baoxin substation, and the gas collected in the gas cylinder is taken at the station.

[0066] In the circuit design, a relay is used to control the power supply or power off of the solenoid valve to control the opening or closing of the fluid pipeline. A total of three solenoid valves 301 are used, and the three control circuits are as follows. OUT1, OUT2, and OUT3 are connected to the single-chip microcomputer. When a remote control command is received, such as opening the No. 1 solenoid valve 301, the single-chip microcomputer pulls down OUT1, the optocoupler is turned on, the light-emitting diode LED1 is on, the relay coil is energized, and the contacts are closed. At this time, the No. 1 solenoid valve 301 is opened.

[0067] Among them, the gas collector 201 is a detachable transparent material accessory. On the one hand, it is convenient to send it directly to the professional team for analysis and testing; on the other hand, it can also serve as an extension of the functions of the full-function patrol and maintenance center, and cooperate with the remote patrol camera to check the color of the gas during the deflation process and preliminarily determine the composition.

[0068] The solenoid valve 301 in the system is controlled by remote control, without the need for personnel to be present. A normally closed solenoid valve 301 is selected. When the electromagnet is energized, an electromagnetic force is generated to attract the valve core, causing the valve core to move to open the fluid channel. When the power is off, the electromagnetic force disappears, and the valve core returns to its original position under the action of a spring or other reset mechanism. The solenoid valve 301 used in the project has a manual switch and a power supply voltage of 220V AC.

[0069] The present invention significantly reduces the operation and maintenance costs of the enterprise, greatly improves the operating efficiency through automation and remote control technology, and brings direct economic benefits to the enterprise. At the same time, the project also profoundly reflects the social benefits. By reducing the risk of personnel exposure to harmful gas environments, it improves operational safety performance, enhances emergency response capabilities, promotes environmental protection and sustainable development, and reduces environmental pollution and waste of resources.

[0070] The application of the present invention significantly reduces the need for manual on-site operation, thereby reducing human resource costs, transportation costs and possible equipment maintenance costs. At the same time, due to the significant improvement in operating efficiency, the power outage time caused by equipment failure or maintenance is reduced, further reducing economic losses.

[0071] Through automation and remote control technology, the device can complete gas deflation operations in a shorter time, improving overall operation and maintenance efficiency, and benefiting the stability and reliability of power supply.

[0072] The present invention can not only be applied to gas degassing operations in substations, but may also be expanded to other related fields, bringing new growth points to enterprises.

[0073] The present invention also has the following beneficial effects: the remote operation method avoids the operation and maintenance personnel from being directly exposed to the harmful gas environment, significantly reduces the safety risks during the operation process, and protects the life safety and physical health of the operation and maintenance personnel.

[0074] A complete emergency response mechanism can quickly launch emergency plans in emergency situations, ensure the safe and stable operation of the power grid, and reduce the impact of power outages caused by equipment failures on social production and life.

[0075] By reducing traffic emissions and the impact of human activities on the environment, the project demonstrates the company's environmental awareness and social responsibility, which will help promote the power industry to develop in a greener and lower-carbon direction.

[0076] The application of automation and intelligent technologies helps to optimize resource allocation and reduce unnecessary waste.

[0077] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A transformer gas venting method, characterized in that: include, By monitoring the transformer gas pressure; By setting a threshold value of gas, and comparing the detected gas pressure with the threshold value; By controlling the gas collecting box (100) to absorb gas in the transformer; and The liquid and gas in the gas collecting box (100) are collected.

2. The transformer gas venting method according to claim 1, characterized in that: The gas collecting box (100) is provided with a pressure sensor (101) for monitoring the internal pressure of the gas collecting box (100).

3. The transformer gas venting method according to claim 1, characterized in that: The gas and liquid in the gas collecting box (100) are collected respectively by the gas collector (201) and the oil-water collector.

4. The transformer gas venting method according to claim 3, characterized in that: The gas collector (201) is provided with a pressure relief valve (203).

5. The transformer gas venting method according to claim 3, characterized in that: A solenoid valve (301) is provided between the transformer and the gas collecting box (100), and a solenoid valve (301) is provided between the gas collecting box (100) and the gas collector (201) and the oil-water collector.

6. The transformer gas venting method according to claim 5, characterized in that: In order to avoid the situation that the electromagnetic valve (301) control switch fails and a large amount of oil leaks, an electronic valve is provided, which is in a normally closed state, is opened by electric control, and is closed when power is lost.

7. A transformer gas venting device, used to perform the transformer gas venting method according to claim 1, characterized in that: include; A gas collecting box (100) connected to the transformer; a discharge unit (200), comprising a gas collector (201) connected to the gas collecting box (100); and A control unit (300) comprises a solenoid valve (301) arranged between the gas collecting box (100) and the transformer, and a solenoid valve (301) between the gas collecting box (100) and the gas collector (201).

8. The transformer gas venting device according to claim 7, characterized in that: The discharge unit (200) further comprises an oil-water separator (202) connected to the gas collecting box (100), and a solenoid valve (301) is provided between the gas collecting box (100) and the oil-water separator (202).

9. The transformer gas venting device according to claim 8, characterized in that: The gas collector (201) is connected to the oil-water separator (202), and the gas collector (201) is also connected to a pressure relief valve (203).

10. The transformer gas venting device according to any one of claims 7 to 9, characterized in that: The gas collecting box (100) is provided with a pressure sensor (101).

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