Multi-model transformer oil safety production system

Abstract

The multi-model transformer oil safety production system comprises a reaction tank and a gas tank, a mixing mechanism is arranged in a tank body of the reaction tank, a self-checking breather valve and a pressure release valve are further arranged at the top end of the tank body, and inert gas is arranged in the gas tank; the self-checking breather valve comprises a butterfly valve arranged between a breather valve body and the tank body, and the breather valve body is further connected with an air injection pipe in an inserted mode and connected with a barometer. The reaction tank is connected with the gas tank through an inner pipe; the butterfly valve is connected with a driving mechanism and an angle encoder; the device further comprises a main control module, the input end of the main control module is connected with a barometer and an angle encoder, and the input end of the main control module is connected with an electromagnetic valve, an air injection pipe and a driving mechanism. And the electromagnetic valve can be triggered after the barometer exceeds a threshold value. Different from a conventional self-checking mode, the breather valve is independently subjected to self-checking testing, so that the needed time is short, and the oil gas concentration can be rapidly reduced in a mode of externally arranging the gas tank for oil gas replacement.

Description

Technical Field

[0001] The invention relates to the technical field of transformer oil production systems, in particular to a multi-model transformer oil safety production system. Background Art

[0002] For different application environments, mineral oil needs to be refined to different degrees. During the production process of transformer oil, the refining operation needs to be completed in the reaction tank. During the operation, the reaction tank needs to perform safety self-inspection. First, it is necessary to ensure that the breathing valve can be used normally to reduce the concentration of oil and gas in the reaction tank. In addition, various explosion-proof mechanisms need to be set up to reduce the damage caused by accidents in the event of accidents. The self-inspection of conventional production systems takes a long time and the effect of reducing the oil and gas concentration is relatively poor. Summary of the Invention

[0003] In order to solve the above-mentioned problems that the self-inspection process of the transformer oil reaction tank is slow and the oil and gas concentration is difficult to reduce, the present invention provides a multi-model transformer oil safety production system.

[0004] The technical solutions of the present invention are as follows: A multi-model transformer oil safety production system includes a reaction tank and a gas tank connected to the reaction tank; The reaction tank is provided with a mixing mechanism in the tank body, and a self-test breathing valve and a pressure relief valve are also provided on the top of the tank body, and the gas tank is provided with inert gas; The self-checking breathing valve includes a butterfly valve arranged between the breathing valve body and the tank body, and the breathing valve body is also plugged with an air injection pipe and connected to a barometer; The reaction tank is connected to an inner tube, and the inner tube is inserted into the tank body. The inner tube includes a hose body, and a float is provided at the end of the hose body extending into the tank body, and a positioning ring is provided at the other end to fix the position; The hose body is provided with an air outlet at a position close to the float; The reaction tank and the tank body are connected by a connecting pipe, and the connecting pipe is provided with a one-way valve and a solenoid valve; The butterfly valve is connected to a driving mechanism and an angle encoder; It also includes a main control module, the input end of which is connected to a barometer and an angle encoder, and the input end of which is connected to a solenoid valve, an air injection pipe and a driving mechanism; The solenoid valve can be triggered after the air pressure gauge exceeds a threshold value.

[0005] Different from the conventional self-test method, the breathing valve is tested separately, so the time required is shorter and the replacement of oil and gas is achieved through an external gas tank, which can quickly and efficiently reduce the concentration of oil and gas in the reaction tank.

[0006] To facilitate testing, an indicator light is also connected to the output end of the main control module, which can be triggered when the pressure gauge exceeds the threshold and the butterfly valve is closed.

[0007] In order to avoid affecting the operation, the length of the hose body is set so that the float and the mixing mechanism never come into contact.

[0008] In order to better reduce the oil and gas concentration, the pressure of the gas tank is greater than the pressure inside the tank.

[0009] The replacement gas of the gas tank is nitrogen or other inert gas that does not react with transformer oil.

[0010] As a preferred solution, the pressure of the gas tank is lower than the triggering pressure of the pressure relief valve and higher than the triggering pressure of the breathing valve body.

[0011] In order to conveniently control the gas replacement speed, the opening size of the solenoid valve can be controlled, and the flow direction of the one-way valve can only be from the gas tank to the reaction tank.

[0012] The inner tube can be disassembled and replaced in the following manner: the connecting tube is connected to the reaction tank via a flange structure, and a groove is provided at the flange structure of the reaction tank, and the positioning ring can be positioned by the groove.

[0013] As a preferred solution, the inner tube can be pulled out from the flange structure.

[0014] In order to facilitate disassembly and assembly, the one-way valve is arranged at one end close to the gas tank.

[0015] The beneficial effects of the present invention are: the present invention is a multi-model transformer oil safety production system, which adds a self-inspection breathing valve on the basis of the existing reaction tank, and can quickly complete the self-inspection of the breathing valve by setting a butterfly valve blocking method. Afterwards, through the setting of the gas tank, inactive gas can be introduced into the reaction tank and the oil and gas can be discharged from the breathing valve to reduce the oil and gas concentration and avoid accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By reading the detailed description of the preferred embodiment below, the solutions and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only for illustrating the preferred embodiment and are not to be considered as limiting the present invention.

[0017] In the attached figure: Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the local structure of the present invention; Figure 3 This is a schematic diagram of the inner tube structure of the present invention; The components represented by the reference numerals in the figure are: 1. Reactor; 11. Tank body; 12. Mixing mechanism; 13. Pressure relief valve; 14. Self-test breathing valve; 141. Butterfly valve; 142. Breathing valve body; 143. Air pipe; 144. Barometer; 2. Gas tank; 3. Connecting pipe; 4. Inner pipe; 41. Positioning ring; 42. Hose body; 43. Air powder bag; 44. Float. DETAILED DESCRIPTION

[0018] Example 1 like Figure 1 A multi-model transformer oil safety production system is shown, comprising a reaction tank 1 and a gas tank 2 connected to the reaction tank 1, wherein the reaction tank 1 needs to be refined, while the gas tank 2 is only used to solve the problem of high oil and gas concentration.

[0019] In order to facilitate refining, a mixing mechanism 12 is provided in the tank body 11 of the reaction tank 1, and a self-checking breathing valve 14 and a pressure relief valve 13 are also provided on the top of the tank body 11. It can be seen that the self-checking breathing valve 14 of the device is different from the conventional breathing valve and has a self-checking function. Figure 2 As shown, the specific structure is that the self-test breathing valve 14 includes a butterfly valve 141 arranged between the breathing valve body 142 and the tank body 11, and the breathing valve body 142 is also connected to the gas injection pipe 143 and is connected to the barometer 144. The breathing valve body 142 can be blocked from the tank body 11 by opening and closing the butterfly valve 141. Therefore, it is only necessary to close the above-mentioned butterfly valve 141 and inject gas through the gas injection pipe 143 to directly drive the above-mentioned breathing valve body 142 to react, and in this process, according to the reading of the barometer 144, it can be judged whether the above-mentioned breathing valve body 142 can function normally.

[0020] Afterwards, an inert gas is set in the gas tank 2; and the replacement gas of the above-mentioned gas tank 2 is nitrogen or other inert gas that does not react with the transformer oil. First of all, the replacement gas cannot react with the transformer oil, and it cannot cause explosion, so it is necessary to select the above-mentioned gas for replacement.

[0021] The specific method is that the reaction tank 1 is connected to the inner tube 4, and the inner tube 4 is inserted into the tank body 11. It should be noted that the inner tube 4 includes a hose body 42, and the end of the hose body 42 extending into the tank body 11 is provided with a float 44, and the other end is provided with a positioning ring 41 and the position is fixed. Since the liquid level is not fixed during the refining process of transformer oil, the liquid level height can be adapted and the gas outlet position can be located by providing the float 44. That is to say, the hose body 42 is provided with an outlet near the float 44. In this way, the outlet of the above-mentioned gas tank 2 can be made slightly higher than the liquid level of the reaction tank 1. When gas replacement is performed, the concentration of oil and gas can be reduced to a lower range as much as possible.

[0022] Preferably, the length of the hose body 42 is set so that the float 44 and the mixing mechanism 12 do not contact each other, thereby avoiding collision or friction between the float 44 and the mixing mechanism 12 .

[0023] Moreover, in order to better reduce the oil and gas concentration, the pressure of the gas tank 2 is greater than the pressure in the tank body 11 to ensure that the inactive gas can enter the tank body 11 more smoothly.

[0024] Moreover, the connection between the two tube bodies is achieved in that the reaction tank 1 and the tank body 11 are connected by a connecting pipe 3, and the connecting pipe 3 is provided with a one-way valve and a solenoid valve, and in order to facilitate the control of the gas replacement speed, the opening size of the solenoid valve can be controlled, and the flow direction of the one-way valve can only be from the gas tank 2 to the reaction tank 1. By setting it in this way, it can be avoided that when the reaction tank 1 explodes unexpectedly, the gas tank 2 is affected and caused to explode as well, and the adjustment ability of the solenoid valve can realize the injection of inactive gas according to demand.

[0025] Afterwards, in order to facilitate the loading and unloading of the above-mentioned inner tube 4, the method for disassembly, assembly and replacement of the inner tube 4 is as follows: the connecting pipe 3 is connected to the reaction tank 1 through a flange structure, and a groove is provided at the flange structure of the reaction tank 1, and the positioning ring 41 can be positioned by the groove, that is, by moving the positioning ring 41 in a direction away from the tank body 11, the above-mentioned inner tube 4 can be directly disassembled and replaced.

[0026] Finally, as a preferred embodiment, the pressure of the gas tank 2 is lower than the triggering pressure of the pressure relief valve 13 and higher than the triggering pressure of the breathing valve body 142, which can avoid the phenomenon of the pressure valve 13 of the reaction tank 1 being ruptured due to the gas injection of the gas tank 2, and ensure that when it injects gas, it can trigger and open the breathing valve body 12 to discharge the oil and gas.

[0027] Finally, in order to facilitate the acquisition of the status of the self-test breathing valve 14, the butterfly valve 141 is connected to a drive mechanism and an angle encoder; Then, for the above structure, in order to facilitate control, a main control module is further included, the input end of which is connected to the barometer 144 and the angle encoder, and the input end of which is connected to the solenoid valve, the gas injection pipe 143 and the driving mechanism; The solenoid valve can be triggered after the pressure gauge 144 exceeds a threshold value, and it is necessary to ensure that the butterfly valve 141 is in an open state. Whether the butterfly valve 141 is open can be determined by the reading of the angle encoder.

[0028] Moreover, to facilitate testing, the output end of the main control module is also connected to an indicator light, which can be triggered when the barometer 144 exceeds the threshold and the butterfly valve 141 is closed. In this way, the above-mentioned gas tank 2 can be prevented from triggering the gas injection state, thereby causing abnormal pressure in the reaction tank 1.

[0029] The above structure can be used to achieve this. Different from the conventional self-test method, the breathing valve is tested independently, so the time required is shorter and the replacement of oil and gas is achieved through the external gas tank 2. It can quickly and efficiently reduce the concentration of oil and gas in the reaction tank 1, and when replacing oil and gas, it can also be used to inject inactive gas at the lowest position according to the fluctuation of the liquid level.

[0030] Example 2 On the basis of Example 1, except for the same structure as above, Figure 3 As shown, the inner tube 4 is also provided with a plurality of air powder bags 43 arranged along the length direction at the position where it extends into the tank body 11, and the air powder bags 43 are filled with explosion suppressants. The material of the air powder bags 43 is different from that of the hose body 42, and the pressure bearing capacity of the air powder bags 43 is less than that of the hose body 42. The air powder bags 43 are configured to explode after exceeding a preset pressure threshold, and the above-mentioned preset pressure threshold is less than the trigger pressure of the pressure relief valve 13 and greater than the trigger pressure of the breathing valve body 12. During production, the filling amount of gas and explosion suppressants in the air powder bags 43 is controlled to ensure that the hose body 42 can float on the liquid in the tank body 11. The explosion suppressant can be a traditional inorganic salt, a composite dry powder or a special nano explosion suppressant powder. Powder explosion suppression is an existing method, but it usually requires a special electronic triggering system. In addition to being complex in structure, this type of system cannot eliminate safety hazards during use. This system places the explosion suppressant in the air powder bags 43, and can achieve good release and dispersion effects without the need for electronic triggering.

[0031] Example 3 A method for using a multi-model transformer oil safety production system comprises the following steps: S1. Breathing valve self-test: Control the butterfly valve 141 to close, then open the gas injection pipe 143 and obtain the real-time value of the barometer 144. If the pressure value of the barometer 144 falls within the preset standard pressure threshold range, proceed to the next step; if not, stop the machine for inspection; S2, breathing valve state switching: close the gas injection pipe 143, control the butterfly valve 141 to open, then open the solenoid valve, obtain the real-time value of the barometer 144, and wait for the value to fall within the preset replacement pressure threshold range for a period of time before proceeding to the next step; S3, transformer oil refining: Close the solenoid valve, open the mixing mechanism 12 to perform mixing and refining operations, and obtain the real-time value of the barometer 144. If the value falls within the preset standard pressure threshold range, directly proceed to step S5; if the value is higher than the preset standard pressure threshold range, proceed to the next step; S4, emergency explosion suppression: open the solenoid valve to the maximum and close the mixing mechanism 12; S5. Shut down.

[0032] After shutdown, if the refining operation is completed normally, the transformer oil is input into the storage oil pipe through the pre-buried pipeline. If the refining operation is not completed and step S4 is triggered, an alarm is issued.

Claims

1. A multi-type transformer oil safety production system, characterized in that: It comprises a reaction tank (1) and a gas tank (2) connected to the reaction tank (1); The tank body (11) of the reaction tank (1) is provided with a mixing mechanism (12), and the top of the tank body (11) is also provided with a self-test breathing valve (14) and a pressure relief valve (13), and the gas tank (2) is provided with an inert gas; The self-test breathing valve (14) includes a butterfly valve (141) arranged between the breathing valve body (142) and the tank body (11), and the breathing valve body (142) is also plugged with an air injection pipe (143) and connected to a pressure gauge (144); The reaction tank (1) is connected to an inner tube (4), and the inner tube (4) is inserted into the tank body (11). The inner tube (4) includes a hose body (42), and the end of the hose body (42) extending into the tank body (11) is provided with a float (44), and the other end is provided with a positioning ring (41) and the position is fixed; The hose body (42) is provided with an air outlet at a position close to the float (44); The reaction tank (1) and the tank body (11) are connected via a connecting pipe (3), and the connecting pipe (3) is provided with a one-way valve and a solenoid valve; The butterfly valve (141) is connected to a driving mechanism and an angle encoder; It also includes a main control module, the input end of the main control module is connected to the barometer (144) and the angle encoder, and the input end of the main control module is connected to the electromagnetic valve, the gas injection pipe (143) and the driving mechanism; The solenoid valve can be triggered after the air pressure gauge (144) exceeds a threshold value.

2. A multi-type transformer oil safety production system according to claim 1, characterized in that: The output end of the main control module is also connected to an indicator light, which can be triggered when the pressure gauge (144) exceeds the threshold and the butterfly valve (141) is closed.

3. A multi-type transformer oil safety production system according to claim 1, characterized in that: The length of the hose body (42) is set so that the float (44) and the mixing mechanism (12) do not contact each other.

4. A multi-type transformer oil safety production system according to claim 1, characterized in that: The pressure of the gas tank (2) is greater than the pressure in the tank body (11).

5. A multi-type transformer oil safety production system according to claim 1, characterized in that: Nitrogen or other inert gas that does not react with transformer oil is arranged in the gas tank (2).

6. A multi-type transformer oil safety production system according to claim 4, characterized in that: The pressure of the gas tank (2) is lower than the triggering pressure of the pressure relief valve (13) and higher than the triggering pressure of the breathing valve body (142).

7. A multi-type transformer oil safety production system according to claim 1, characterized in that: The opening size of the solenoid valve can be controlled, and the flow direction of the one-way valve can only be from the gas tank (2) to the reaction tank (1).

8. A multi-type transformer oil safety production system according to claim 1, characterized in that: The connecting pipe (3) is connected to the reaction tank (1) via a flange structure, and a groove is provided at the flange structure of the reaction tank (1), and the positioning ring (41) can be positioned by the groove.

9. A multi-type transformer oil safety production system according to claim 8, characterized in that: The inner tube (4) can be pulled out from the flange structure.

10. A multi-type transformer oil safety production system according to claim 8, characterized in that: The one-way valve is arranged at one end close to the gas tank (2).

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