Transformer oil, gas integration treatment system and treatment method

Abstract

A transformer oil and gas integrated treatment system and treatment method, comprising a first valve, a second valve, a third valve and a fourth valve on the transformer, the first valve is an oil injection valve, the second valve is a vacuum extraction valve, the third valve is an oil pillow top communication valve, and the fourth valve is a process valve, the first valve is connected with an oil filter through a pipeline, the oil filter is connected with an insulating oil tank through a pipeline, the second valve is connected with a dry air generator through a pipeline, and the third valve and the fourth valve are connected with a vacuum pump through a pipeline. The oil treatment process and the gas treatment process of the transformer overhaul whole process can be realized only by valve control, the air pipe and the oil pipe switching process is reduced, and the operation efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of transformer oil and gas treatment technology, and specifically relates to an integrated transformer oil and gas treatment system and method. Background Technology

[0002] During transformer overhaul, the insulating oil (also known as transformer oil) needs to be treated, the main transformer needs to be evacuated and filled with dry air to restore the insulating properties of the transformer oil and effectively prevent the transformer from getting damp. At present, the urgent problem to be solved is that transformer overhaul oil treatment and gas system treatment are basically single-type work. Each work needs to be completed by switching oil pipes and gas pipes, which is time-consuming and labor-intensive. There is a lack of a system that can simplify the process. Summary of the Invention

[0003] In view of the technical problems existing in the background art, the transformer oil and gas integrated treatment system and treatment method provided by the present invention can realize the oil treatment process and gas treatment process of the entire transformer overhaul process by simply controlling the valve, reducing the gas pipe and oil pipe switching process and improving the operation efficiency.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A transformer oil and gas integrated treatment system includes a first valve, a second valve, a third valve and a fourth valve on the transformer. The first valve is an oil injection / drainage valve located at the bottom of the transformer. The second valve is a vacuum valve located at the top of the transformer. The third valve is a connecting valve at the top of the oil conservator located at the top of the oil conservator. The fourth valve is a process valve located at the top of the transformer. The first valve is connected to the oil filter via a pipeline, and the oil filter is connected to the insulating oil tank via a pipeline. The second valve is connected to the dry air generator via a pipe; The third and fourth valves are connected to the vacuum pump via pipes.

[0005] Preferably, it also includes a multi-way valve, wherein the multi-way valve includes an eighth valve, a ninth valve, a tenth valve, an eleventh valve, and a twelfth valve; The second multi-way valve includes valves nineteen, twentieth, twenty-first, and twenty-second; The third multi-way valve includes valves 25, 26, 27, and 28; The fourth multi-way valve includes the fifth, sixth, and seventh valves; The oil filter is equipped with a twenty-third valve and a twenty-fourth valve; The first valve is connected to the twenty-sixth valve via a pipe, the twenty-fifth valve is connected to the twenty-third valve via a pipe, the twenty-fourth valve is connected to the nineteenth valve via a pipe, the twenty-second valve is connected to the tenth valve via a pipe, and the twentieth or twenty-first valve is used to connect to the insulating oil tank. The second valve is connected to the sixth valve via a pipe, and the seventh valve is connected to the dry air generator via a pipe; The third valve is connected to the ninth valve via a pipe; The fourth valve is connected to the eighth valve via a pipe; the twelfth valve is connected to the fifth valve via a pipe; and the eleventh valve is connected to the vacuum pump via a pipe.

[0006] Preferably, the insulating oil tank includes a No. 1 insulating oil tank and a No. 2 insulating oil tank. The No. 1 insulating oil tank is provided with a sixteenth valve and a seventeenth valve at its top and bottom, respectively. The No. 2 insulating oil tank is provided with a fifteenth valve and an eighteenth valve at its top and bottom, respectively. The twentieth valve is connected to the eighteenth valve through a pipe, the twenty-first valve is connected to the seventeenth valve through a pipe, the sixteenth valve is connected to the twenty-seventh valve through a pipe, and the fifteenth valve is connected to the twenty-eighth valve through a pipe.

[0007] Preferably, the treatment method of the transformer oil and gas integrated treatment system includes the following steps: Step 1: Open valves 13, 7, 5, 9, and 12; keep all other valves closed. Perform a pre-maintenance sealing test. Step two: Open valves one, nineteen, twentieth, twenty-first, twenty-third, twenty-fourth, twenty-fifth, and twenty-six; keep the other valves closed; drain the transformer oil. Step 3: Open valves 13, 2, 6, and 7; keep the other valves closed; turn on the dry air generator to charge the transformer with dry air. Step 4: Open valves 16, 17, 19, 21, 23, 24, and 25; keep the other valves closed; begin circulating the oil in the No. 1 insulating oil tank. Step 5: Open valves 23, 24, 25, 18, 19, 20, and 15; keep the other valves closed; begin circulating the oil in the No. 2 insulating oil tank. Step six: Open valves three, four, eight, nine, eleven, and fourteen; keep the other valves closed; turn on the vacuum pump to evacuate the transformer. Step 7: Open valves 17, 18, 20, 21, 22, 23, 24, 25, 26, 1, 3, 4, 8, 9, 11, and 14; keep all other valves closed; add oil to the transformer. When the oil level is close to the height of the fourth valve during transformer oil filling, close the fourth and eighth valves.

[0008] Step 8: Open valves 13, 7, 5, 12, and 9; keep the other valves closed; break the vacuum in the transformer capsule.

[0009] Step nine: Open valves one, four, eight, ten, nineteen, twenty-two, twenty-three, twenty-four, twenty-five, and twenty-six; keep the other valves closed; and begin transformer hot oil circulation.

[0010] The present invention can achieve the following beneficial effects: This invention employs three six-way valves, one four-way valve, and some oil and gas pipes for corresponding connections. During use, the oil and gas treatment processes for the entire transformer overhaul can be achieved simply by controlling the valves, reducing the need for switching between oil and gas pipes and improving operational efficiency. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a system structure diagram of the present invention.

[0012] In the diagram: Valve 1, Valve 2, Valve 3, Valve 4, Valve 5, Valve 6, Valve 7, Valve 8, Valve 9, Valve 10, Valve 11, Valve 12, Valve 13, Valve 14, Valve 15, Valve 16, Valve 17, Valve 18, Valve 19, Valve 20, Valve 21, Valve 22, Valve 23, Valve 24, Valve 25, Valve 26, Valve 27, Valve 28, Transformer 29, Vacuum Oil Filter 30, Vacuum Pump 31, Dry Air Generator 32, Insulating Oil Tank No. 1 33, Insulating Oil Tank No. 2 34, Pressure Gauge 35. Detailed Implementation

[0013] Example 1: Preferred solutions include Figure 1As shown, a transformer oil and gas integrated treatment system and method includes a first valve 1, a second valve 2, a third valve 3, and a fourth valve 4 on the transformer. The first valve 1 is an oil injection / drainage valve, the second valve 2 is a vacuum valve, the third valve 3 is a connecting valve at the top of the oil conservator, and the fourth valve 4 is a process valve. The first valve 1 is connected to an oil filter via a pipeline, and the oil filter is connected to an insulating oil tank via a pipeline. The second valve 2 is connected to a dry air generator via a pipeline. The third valve 3 and the fourth valve 4 are connected to a vacuum pump via pipelines. The vacuum pump outlet is equipped with a fourteenth valve 14, and the dry air generator outlet is equipped with a thirteenth valve 13. In this embodiment, the valves are manual valves, electric valves, or solenoid valves. A pressure gauge 35 is installed on the pipeline connected to the third valve 3 for detecting the medium pressure.

[0014] Furthermore, the multi-way valves in this system are six-way valves and four-way valves, specifically including three six-way valves and one four-way valve, one of which includes valve 8 (eighth valve), valve 9 (ninth valve), valve 10 (tenth valve), valve 11 (eleventh valve), and valve 12 (twelfth valve); The second six-way valve includes the nineteenth valve 19, the twentieth valve 20, the twenty-first valve 21, and the twenty-second valve 22; The third six-way valve includes valve 25 (twenty-fifth), valve 26 (twenty-sixth), valve 27 (twenty-seventh), and valve 28 (twenty-eighth). The four-way valve includes valve 5 (fifth valve), valve 6 (sixth valve), and valve 7 (seventh valve); The oil filter is equipped with a twenty-third valve 23 and a twenty-fourth valve 24; the oil filter is a vacuum oil filter.

[0015] The first valve 1 is connected to the twenty-sixth valve 26 via a pipe, the twenty-fifth valve 25 is connected to the twenty-third valve 23 via a pipe, the twenty-fourth valve 24 is connected to the nineteenth valve 19 via a pipe, the twenty-second valve 22 is connected to the tenth valve 10 via a pipe, and the twentieth valve 20 or the twenty-first valve 21 is used to connect to the insulating oil tank. The second valve 2 is connected to the sixth valve 6 via a pipe, and the seventh valve 7 is connected to the dry air generator via a pipe; The third valve 3 is connected to the ninth valve 9 via a pipeline; The fourth valve 4 is connected to the eighth valve 8 via a pipe; the twelfth valve 12 is connected to the fifth valve 5 via a pipe; and the eleventh valve 11 is connected to the vacuum pump via a pipe.

[0016] Furthermore, the insulating oil tank includes a No. 1 insulating oil tank and a No. 2 insulating oil tank. The No. 1 insulating oil tank is equipped with a sixteenth valve 16 and a seventeenth valve 17 at the top and bottom, respectively. The No. 2 insulating oil tank is equipped with a fifteenth valve 15 and an eighteenth valve 18 at the top and bottom, respectively. The twentieth valve 20 is connected to the eighteenth valve 18 through a pipe, the twenty-first valve 21 is connected to the seventeenth valve 17 through a pipe, the sixteenth valve 16 is connected to the twenty-seventh valve 27 through a pipe, and the fifteenth valve 15 is connected to the twenty-eighth valve 28 through a pipe.

[0017] Appendix Figure 1 In this invention, the valve is installed at the junction of the pipeline and the equipment.

[0018] Preferably, the treatment method of the transformer oil and gas integrated treatment system includes the following steps: Step 1: Open valves 13 (13th), 7 (7th), 5 (5th), 9 (9th), and 12 (12th), while keeping all other valves closed; conduct a pre-maintenance sealing test. Step 2: Open valves 1-16, 19-19, 20-20, 21-21, 23-23, 24-24, 25-25, and 26-26; keep the other valves closed; drain the transformer oil. Step 3: Open valve 13 (13th valve), valve 2 (2nd valve), valve 6 (6th valve), and valve 7 (7th valve); keep the other valves closed; turn on the dry air generator to charge the transformer with dry air. Step 4: Open valves 16, 17, 19, 21, 23, 24, and 25; keep the other valves closed; begin circulating the oil in the No. 1 insulating oil tank. Step 5: Open valves 23, 24, 25, 18, 19, 20, and 15; keep the other valves closed; begin circulating the oil in the No. 2 insulating oil tank. Step 6: Open valves 3, 4, 8, 9, 11, and 14; keep the other valves closed; turn on the vacuum pump to evacuate the transformer. Step 7: Open valves 17, 18, 20, 21, 22, 23, 24, 25, 26, 1, 3, 4, 8, 9, 11, and 14; keep all other valves closed; add oil to the transformer. When the transformer is being filled with oil, and the oil level is almost at the height of the fourth valve 4, close the fourth valve 4 and the eighth valve 8.

[0019] Step 8: Open valves 13 (13), 7 (7), 5 (5), 12 (12), and 9 (9); keep the other valves closed; break the vacuum in the transformer bladder. Breaking the vacuum in the transformer bladder is a general term; it can also be called releasing the bladder vacuum.

[0020] Step nine: Open valves 1, 4, 8, 10, 19, 22, 23, 24, 25, and 26; keep the other valves closed; and begin transformer hot oil circulation.

[0021] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A transformer oil and gas integrated treatment system, comprising a first valve (1), a second valve (2), a third valve (3), and a fourth valve (4) on the transformer, wherein the first valve (1) is an oil injection / discharge valve located at the bottom of the transformer, the second valve (2) is a vacuum valve located at the top of the transformer, the third valve (3) is a connecting valve at the top of the oil conservator located at the top of the oil conservator, and the fourth valve (4) is a process valve located at the upper part of the transformer, characterized in that: The first valve (1) is connected to the oil filter through a pipeline, and the oil filter is connected to the insulating oil tank through a pipeline; The second valve (2) is connected to the dry air generator via a pipeline; The third valve (3) and the fourth valve (4) are connected to the vacuum pump via pipes; It also includes multi-way valves, one of which includes an eighth valve (8), a ninth valve (9), a tenth valve (10), an eleventh valve (11) and a twelfth valve (12). The second multi-way valve includes the nineteenth valve (19), the twentieth valve (20), the twenty-first valve (21), and the twenty-second valve (22); The third multi-way valve includes valve number 25 (25), valve number 26 (26), valve number 27 (27), and valve number 28 (28); The fourth multi-way valve includes the fifth valve (5), the sixth valve (6), and the seventh valve (7); The oil filter is equipped with a twenty-third valve (23) and a twenty-fourth valve (24); The first valve (1) is connected to the twenty-sixth valve (26) via a pipe, the twenty-fifth valve (25) is connected to the twenty-third valve (23) via a pipe, the twenty-fourth valve (24) is connected to the nineteenth valve (19) via a pipe, the twenty-second valve (22) is connected to the tenth valve (10) via a pipe, and the twentieth valve (20) or the twenty-first valve (21) is used to connect to the insulating oil tank; The second valve (2) is connected to the sixth valve (6) via a pipe, and the seventh valve (7) is connected to the dry air generator via a pipe; The third valve (3) is connected to the ninth valve (9) via a pipe; The fourth valve (4) is connected to the eighth valve (8) via a pipe; the twelfth valve (12) is connected to the fifth valve (5) via a pipe; and the eleventh valve (11) is connected to the vacuum pump via a pipe.

2. The transformer oil and gas integrated treatment system according to claim 1, characterized in that: The insulating oil tank includes No. 1 insulating oil tank and No. 2 insulating oil tank. The top and bottom of No. 1 insulating oil tank are respectively equipped with the sixteenth valve (16) and the seventeenth valve (17). The top and bottom of No. 2 insulating oil tank are respectively equipped with the fifteenth valve (15) and the eighteenth valve (18). The twentieth valve (20) is connected to the eighteenth valve (18) through a pipe. The twenty-first valve (21) is connected to the seventeenth valve (17) through a pipe. The sixteenth valve (16) is connected to the twenty-seventh valve (27) through a pipe. The fifteenth valve (15) is connected to the twenty-eighth valve (28) through a pipe.

3. The processing method of the transformer oil and gas integrated treatment system according to claim 1 or 2, characterized in that... Includes the following steps: Step 1: Open valves 13 (13), 7 (7), 5 (5), 9 (9), and 12 (12), while keeping the other valves closed; conduct a pre-maintenance sealing test. Step 2: Open valves 1 (1), 19 (19), 20 (20), 21 (21), 23 (23), 24 (24), 25 (25), and 26 (26); keep the other valves closed; drain the transformer oil. Step 3: Open valve 13, valve 2, valve 6, and valve 7; keep the other valves closed; turn on the dry air generator to charge the transformer with dry air. Step 4: Open valves 16 (16), 17 (17), 19 (19), 21 (21), 23 (23), 24 (24), and 25 (25); keep the other valves closed; circulate the oil in the No. 1 insulating oil tank. Step 5: Open valves 23 (23), 24 (24), 25 (25), 18 (18), 19 (19), 20 (20), and 15 (15); keep the other valves closed; circulate the oil in the No. 2 insulating oil tank. Step 6: Open valves 3 (3), 4 (4), 8 (8), 9 (9), 11 (11) and 14 (14); keep the other valves closed; turn on the vacuum pump to evacuate the transformer. Step 7: Open valves 17 (17), 18 (18), 20 (20), 21 (21), 22 (22), 23 (23), 24 (24), 25 (25), 26 (26), 1 (1), 3 (3), 4 (4), 8 (8), 9 (9), 11 (11), and 14 (14); keep the other valves closed; add oil to the transformer. Step 8: Open valves 13 (13), 7 (7), 5 (5), 12 (12), and 9 (9); keep the other valves closed; break the vacuum in the transformer capsule. Step 9: Open valves 1 (1), 4 (4), 8 (8), 10 (10), 19 (19), 22 (22), 23 (23), 24 (24), 25 (25), and 26 (26); keep the other valves closed; and circulate the transformer hot oil.

4. The processing method of the transformer oil and gas integrated treatment system according to claim 1, characterized in that: In step 7, when the oil level is about to reach the height of the fourth valve (4) during transformer oil filling, the fourth valve (4) and the eighth valve (8) are closed.

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