CN215521210U

CN215521210U - SF6 gas recovery and purification system

Info

Publication number: CN215521210U
Application number: CN202121768438.6U
Authority: CN
Inventors: 薛超
Original assignee: Changzhou Youda Electronic Technology Co ltd
Current assignee: Changzhou Youda Electronic Technology Co ltd
Priority date: 2021-07-31
Filing date: 2021-07-31
Publication date: 2022-01-14
Anticipated expiration: 2031-07-31

Abstract

The utility model discloses an SF6 gas recovery and purification system, which belongs to the technical field of SF6 gas recovery, and comprises a shell, wherein a gas storage tank is fixedly arranged in the shell, an exhaust mechanism is arranged on the right side of the gas storage tank, the output end of the exhaust mechanism is communicated with the outside of the shell, a connecting mechanism is arranged on the left side of the shell, a buffer box is arranged at the bottom of the connecting mechanism, and a two-way joint is fixedly connected in the right side of the buffer box. The utility model discloses a support the device through the casing to make things convenient for the device to remove, be connected buffer tank and casing through coupling mechanism earlier, then use two-way joint and first pipeline and second pipeline to be connected, thereby realized that the device possesses and to continue to use after can retrieving the filtration to the gas after using, resources are saved and cost, and can cushion air velocity when dashing and releasing gas, avoid haring the advantage of inside electrical element.

Description

SF6 gas recovery and purification system

Technical Field

The utility model relates to the technical field of SF6 gas recovery, in particular to an SF6 gas recovery and purification system.

Background

SF6 (sulfur hexafluoride) gas is a non-toxic, colorless, tasteless, odorless and non-combustible synthetic gas, has insulation property and arc extinguishing capability which are incomparable with common electrolytes, and is widely applied to various SF6 electrical equipment, but SF6 gas is expensive and can be decomposed to generate toxic components under the action of electric arc, electric spark and corona discharge, so that when SF6 electrical equipment is used, a special device is required to charge, discharge and recover SF6 gas.

However, most of the existing gas recovery devices can only recover used SF6 gas, and then new SF6 gas is flushed to replace the gas, which causes waste of resources, and when charging and discharging electrical equipment, because the difference between the internal and external air pressure values is too large, the internal of the device can be damaged due to the incapability of buffering the air flow, so that an SF6 gas recovery and purification system is provided to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an SF6 gas recovery and purification system, aiming at solving the problems that resources are wasted and the inside of the device is easily damaged due to the fact that the air flow cannot be buffered due to the fact that the difference between the internal pressure and the external pressure is too large when electrical equipment is inflated and deflated.

In order to solve the above problems, the present invention adopts the following technical solutions.

An SF6 gas recovery and purification system comprises a shell, wherein a gas storage tank is fixedly arranged in the shell, a gas exhaust mechanism is arranged on the right side of the gas storage tank, the output end of the gas exhaust mechanism is communicated with the outside of the shell, a connecting mechanism is arranged on the left side of the shell, a buffer tank is arranged at the bottom of the connecting mechanism, a two-way joint is fixedly connected in the right side of the buffer tank, a first pipeline and a second pipeline are movably connected on the right side of the two-way joint, a first compressor is fixedly connected in the shell, the input end of the first compressor is fixedly connected to the bottom end of the first pipeline, the top end of the first pipeline is fixedly connected to the outer side of the gas storage tank, a three-way pipe is fixedly connected at the output end of the first compressor, the top end of the three-way pipe is fixedly connected to the bottom end of the first pipeline, and a filter device is arranged between the other two ends of the three-way pipe, the filter device comprises a filter device and is characterized in that an output end of the filter device is fixedly connected with a first electromagnetic valve, the other end of the first electromagnetic valve is fixedly connected with the left side of a gas storage tank through a pipeline, the outer side of a two-way joint is fixedly connected with a second electromagnetic valve, the outer side of the first pipeline is fixedly connected with a third electromagnetic valve, and the outer side of the second pipeline is fixedly connected with a fourth electromagnetic valve.

As a further description of the above technical solution: exhaust mechanism includes second compressor, connecting pipe, fifth solenoid valve, blast pipe and check valve, the right side fixed connection of second compressor to the inside of casing, the input fixed connection of second compressor to the one end of connecting pipe, the other end fixed connection of connecting pipe to the left side of gas holder, the outside of fifth solenoid valve installation to connecting pipe, the output fixed connection of second compressor to the one end of blast pipe, the other end of blast pipe runs through and fixed connection to the outside of casing, the outside of check valve installation to blast pipe.

As a further description of the above technical solution: the filtering device comprises two communicating pipes, two filters and an output pipe, the left ends of the two communicating pipes are fixedly connected to the right two ends of the three-way pipe respectively, the other ends of the communicating pipes are fixedly connected to the input ends of the filters, the output ends of the two filters are fixedly connected to the left side of the first electromagnetic valve, and the back faces of the two filters are fixedly connected to the inside of the shell.

As a further description of the above technical solution: the outer side of the position where the first pipeline is communicated with the input end of the first compressor is provided with a first pressure gauge, and the outer side of the joint of the output end of the first compressor and the three-way pipe is provided with a second pressure gauge.

As a further description of the above technical solution: the connecting mechanism comprises an I-shaped frame, a connecting flange and a clamping block, one end of the I-shaped frame is fixedly connected to the top of the connecting flange, the bottom of the connecting flange is fixedly connected with the top of the buffer box through a bolt, the other end of the I-shaped frame is clamped to the inside of the clamping block, the clamping block is fixedly connected with the I-shaped frame through a bolt, and the right side of the clamping block is fixedly connected to the left side of the shell.

As a further description of the above technical solution: the left side fixedly connected with relief valve of baffle-box, the left side fixedly connected with of relief valve connects the dop.

Compared with the prior art, the utility model has the advantages that:

(1) the scheme supports the device through the shell and facilitates the movement of the device, the buffer tank is connected with the shell through the connecting mechanism, then the buffer tank is connected with the first pipeline and the second pipeline through the two-way joint, then the left side of the buffer tank is connected with the inside of the electrical equipment, the second electromagnetic valve is closed at the moment, the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve are opened, then the exhaust mechanism is started to exhaust air in the device, then the exhaust mechanism is closed, the first electromagnetic valve and the second electromagnetic valve are opened, the buffer tank is communicated with the inside of the electrical equipment, the third electromagnetic valve and the fourth electromagnetic valve are closed, gas in the electrical equipment is sucked into the buffer tank due to the difference between the internal pressure and the external pressure, then the first compressor is started to pump the gas out through the first pipeline and output the gas to the inside of the filtering device, the filtering device filters impurities in the gas and inputs the gas into the gas storage tank for temporary storage, when the gas in the electrical equipment is completely pumped out, the second electromagnetic valve is closed, then the third electromagnetic valve is opened, so that the gas circulates among the first pipeline, the first compressor, the filtering device and the gas storage tank for repeated filtering, the filtering effect is better, then the fourth electromagnetic valve is opened again, and the first electromagnetic valve is closed, so that the filtered gas is conveyed back to the interior of the electrical equipment again through the second pipeline for continuous use, thereby realizing that the device can be used after the used gas is recovered and filtered, saving resources and cost, and can buffer the air flow speed when charging and discharging air, avoiding damaging the internal electric elements, solving the waste of resources in the prior art, and when charging and discharging air to the electric equipment, the problem that the inside of the device is easily damaged because the air flow cannot be buffered due to the overlarge difference between the internal pressure and the external pressure.

(2) This scheme uses through the cooperation of second compressor, connecting pipe, fifth solenoid valve, blast pipe and check valve, starts the second compressor and takes the inside air of device out and discharge through the blast pipe through the connecting pipe, closes the fifth solenoid valve after the evacuation and can realize the better sealed effect of device to can avoid backward pouring into the device of air when exhausting through the check valve.

(3) This scheme uses through the cooperation of communicating pipe, two filters and output tube, and gas gets into two inside backs of filter respectively through two communicating pipes, and inside the output tube entered into the gas holder again for the filter effect of device is better, and efficiency is higher.

(4) This scheme can detect the pressure value change before the first compressor output and after the output simultaneously through first manometer and second manometer to judge whether normally effective work of first compressor, it is safe more practical.

(5) This scheme uses through the cooperation of I-shaped frame, flange and fixture block, can conveniently assemble and dismantle baffle-box and device, and it is more convenient to use the butt joint.

(6) The flow speed of air current can be controlled through the relief valve to this scheme to cooperation baffle-box can short-time storage a certain amount of gas, thereby the regulation is aerifyd and air current speed when gassing, with the purpose that reaches protection electrical component, and makes things convenient for the device to dock with electrical equipment through connecting the dop.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is an enlarged view of the part A of FIG. 1;

fig. 3 is a schematic front perspective view of the connection mechanism of the present invention.

The reference numbers in the figures illustrate:

1. a housing; 2. a gas storage tank; 3. an exhaust mechanism; 31. a second compressor; 32. a connecting pipe; 33. a fifth solenoid valve; 34. an exhaust pipe; 35. a one-way valve; 4. a connecting mechanism; 41. an I-shaped frame; 42. a connecting flange; 43. a clamping block; 5. a buffer tank; 51. a pressure relief valve; 52. connecting a chuck; 6. a two-way joint; 7. a first conduit; 8. a second conduit; 9. a first compressor; 10. a three-way pipe; 11. a filtration device; 111. a communicating pipe; 112. a filter; 113. an output pipe; 12. a first solenoid valve; 13. a second solenoid valve; 14. a third electromagnetic valve; 15. a fourth solenoid valve; 16. a first pressure gauge; 17. and a second pressure gauge.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention;

referring to fig. 1 to 3, in the present invention, an SF6 gas recovery and purification system comprises a housing 1, a gas storage tank 2 is fixedly installed inside the housing 1, an exhaust mechanism 3 is disposed on the right side of the gas storage tank 2, an output end of the exhaust mechanism 3 is communicated with the outside of the housing 1, a connection mechanism 4 is disposed on the left side of the housing 1, a buffer tank 5 is disposed at the bottom of the connection mechanism 4, a two-way joint 6 is fixedly connected inside the right side of the buffer tank 5, a first pipeline 7 and a second pipeline 8 are movably connected on the right side of the two-way joint 6, a first compressor 9 is fixedly connected inside the housing 1, an input end of the first compressor 9 is fixedly connected to the bottom end of the first pipeline 7, a top end of the first pipeline 7 is fixedly connected to the outside of the gas storage tank 2, an output end of the first compressor 9 is fixedly connected to a three-way pipe 10, a top end of the three-way pipe 10 is fixedly connected to the bottom end of the first pipeline 7, a filtering device 11 is arranged between the other two ends of the three-way pipe 10, the output end of the filtering device 11 is fixedly connected with a first electromagnetic valve 12, the other end of the first electromagnetic valve 12 is fixedly connected with the left side of the gas storage tank 2 through a pipeline, the outer side of the two-way joint 6 is fixedly connected with a second electromagnetic valve 13, the outer side of the first pipeline 7 is fixedly connected with a third electromagnetic valve 14, and the outer side of the second pipeline 8 is fixedly connected with a fourth electromagnetic valve 15.

In the utility model, the device is supported by the shell 1 and is convenient to move, the buffer box 5 is connected with the shell 1 through the connecting mechanism 4, then the buffer box is connected with the first pipeline 7 and the second pipeline 8 by using the two-way joint 6, then the left side of the buffer box 5 is connected with the inside of the electrical equipment, at the moment, the second electromagnetic valve 13 is closed, the second electromagnetic valve 13, the third electromagnetic valve 14 and the fourth electromagnetic valve 15 are opened, then the exhaust mechanism 3 is started to exhaust the air in the device, then the exhaust mechanism 3 is closed, then the first electromagnetic valve 12 and the second electromagnetic valve 13 are opened, the buffer box 5 is communicated with the inside of the electrical equipment, the third electromagnetic valve 14 and the fourth electromagnetic valve 15 are closed, the gas in the electrical equipment is sucked into the buffer box 5 due to the difference of internal and external pressures, then the first compressor 9 is started to pump the gas out through the first pipeline 7 and output the gas to the inside the filtering device 11, the filtering device 11 filters impurities in the gas and inputs the impurities into the gas storage tank 2 for temporary storage, when the gas in the electrical equipment is completely pumped out, the second electromagnetic valve 13 is closed, then the third electromagnetic valve 14 is opened, so that the gas circulates among the first pipeline 7, the first compressor 9, the filtering device 11 and the gas storage tank 2, repeated filtering is carried out, the filtering effect is better, then the fourth electromagnetic valve 15 is opened, the first electromagnetic valve 12 is closed, so that the filtered gas is conveyed back to the interior of the electrical equipment again through the second pipeline 8 for continuous use, thereby realizing that the device can recycle and filter the used gas for continuous use, saving resources and cost, buffering the gas flow speed when the gas is flushed and discharged, avoiding damaging the internal electrical elements, and solving the problem of resource waste in the prior art, and when the electrical equipment is inflated and deflated, the air flow can not be buffered due to the overlarge difference between the internal pressure and the external pressure, so that the internal part of the device is easily damaged.

Please refer to fig. 1, in which: the exhaust mechanism 3 includes a second compressor 31, a connection pipe 32, a fifth electromagnetic valve 33, an exhaust pipe 34 and a check valve 35, a right side of the second compressor 31 is fixedly connected to the inside of the casing 1, an input end of the second compressor 31 is fixedly connected to one end of the connection pipe 32, the other end of the connection pipe 32 is fixedly connected to the left side of the gas storage tank 2, the fifth electromagnetic valve 33 is installed to the outside of the connection pipe 32, an output end of the second compressor 31 is fixedly connected to one end of the exhaust pipe 34, the other end of the exhaust pipe 34 penetrates through and is fixedly connected to the outside of the casing 1, the check valve 35 is installed to the outside of the exhaust pipe 34, and the back surfaces of the two filters 112 are fixedly connected to the inside of the casing 1.

In the utility model, through the matching use of the second compressor 31, the connecting pipe 32, the fifth electromagnetic valve 33, the exhaust pipe 34 and the one-way valve 35, the second compressor 31 is started to pump out the air in the device through the connecting pipe 32 and exhaust the air through the exhaust pipe 34, the fifth electromagnetic valve 33 is closed after the air is exhausted, the better sealing effect of the device can be realized, and the air can be prevented from reversely flowing into the device through the one-way valve 35 during the exhaust.

Please refer to fig. 1 and fig. 2, wherein: the filtering device 11 includes two communicating pipes 111, two filters 112 and an output pipe 113, the left ends of the two communicating pipes 111 are respectively fixedly connected to the right two ends of the three-way pipe 10, the other end of the communicating pipe 111 is fixedly connected to the input end of the filter 112, and the output ends of the two filters 112 are both fixedly connected to the left side of the first electromagnetic valve 12.

In the utility model, through the matching use of the communicating pipe 111, the two filters 112 and the output pipe 113, the gas respectively enters the two filters 112 through the two communicating pipes 111 and then enters the gas storage tank 2 through the output pipe 113, so that the filtering effect of the device is better and the efficiency is higher.

Please refer to fig. 1, in which: a first pressure gauge 16 is arranged on the outer side of the position where the first pipeline 7 is communicated with the input end of the first compressor 9, and a second pressure gauge 17 is arranged on the outer side of the connecting position of the output end of the first compressor 9 and the three-way pipe 10.

In the utility model, the pressure value change before and after the output of the first compressor 9 can be detected simultaneously through the first pressure gauge 16 and the second pressure gauge 17 so as to judge whether the first compressor 9 works normally and effectively, so that the method is safer and more practical.

Please refer to fig. 1 and fig. 3, wherein: the connecting mechanism 4 comprises an i-shaped frame 41, a connecting flange 42 and a clamping block 43, one end of the i-shaped frame 41 is fixedly connected to the top of the connecting flange 42, the bottom of the connecting flange 42 is fixedly connected with the top of the buffer box 5 through a bolt, the other end of the i-shaped frame 41 is clamped into the clamping block 43, the clamping block 43 is fixedly connected with the i-shaped frame 41 through a bolt, and the right side of the clamping block 43 is fixedly connected to the left side of the shell 1.

In the utility model, the buffer box 5 and the device can be conveniently assembled and disassembled by matching the I-shaped frame 41, the connecting flange 42 and the clamping block 43, and the butt joint is more convenient.

Please refer to fig. 1, in which: a pressure release valve 51 is fixedly connected to the left side of the buffer tank 5, and a connection clamp 52 is fixedly connected to the left side of the pressure release valve 51.

In the utility model, the flow speed of the air flow can be controlled by the pressure relief valve 51, and a certain amount of air can be temporarily stored by matching with the buffer box 5, so that the air flow speed during inflation and deflation is adjusted, the purpose of protecting the electrical elements is achieved, and the device is convenient to be butted with electrical equipment by connecting the clamping head 52.

The working principle is as follows: when the air-purifying device is used, the buffer tank 5 is connected with the shell 1 through the connecting mechanism 4, then the two-way joint 6 is connected with the first pipeline 7 and the second pipeline 8, then the left side of the buffer tank 5 is connected with the interior of the electrical equipment, at the moment, the second electromagnetic valve 13 is closed, the second electromagnetic valve 13, the third electromagnetic valve 14 and the fourth electromagnetic valve 15 are opened, then the exhaust mechanism 3 is started to exhaust air in the device, then the exhaust mechanism 3 is closed, the first electromagnetic valve 12 and the second electromagnetic valve 13 are opened, the buffer tank 5 is communicated with the interior of the electrical equipment, the third electromagnetic valve 14 and the fourth electromagnetic valve 15 are closed, gas in the electrical equipment is sucked into the interior of the buffer tank 5 due to the difference between the internal pressure and the external pressure, the flow speed of air flow can be controlled through the pressure release valve 51, and a certain amount of gas can be temporarily stored by matching with the buffer tank 5, thereby adjusting the air flow speed during inflation and deflation, then starting the first compressor 9 to pump the air out through the first pipeline 7 into the two communicating pipes 111, then the air enters the two filters 112 respectively, then enters the air storage tank 2 through the output pipe 113, when the air in the electrical equipment is completely pumped out, closing the second electromagnetic valve 13, then opening the third electromagnetic valve 14 to circulate the air among the first pipeline 7, the first compressor 9, the filtering device 11 and the air storage tank 2 for repeated filtering, so that the filtering effect is better, then opening the fourth electromagnetic valve 15, and closing the first electromagnetic valve 12, so that the filtered air is conveyed back to the interior of the electrical equipment again through the second pipeline 8 for continuous use, thereby realizing that the device can recover and filter the used air for continuous use, resources are saved and cost are saved, air flow speed can be buffered when air is flushed and discharged, the advantage of damaging internal electrical elements is avoided, the problem that resources are wasted in the prior art is solved, and when the electrical equipment is inflated and discharged, the problem that air flow buffering is easy to damage the inside of the device due to the fact that the difference value of internal and external air pressures is too large can not be carried out.

The foregoing is only a preferred embodiment of the present invention; the scope of the utility model is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. An SF6 gas recovery and purification system, comprising a shell (1), characterized in that: the gas storage tank (2) is fixedly mounted inside the shell (1), the right side of the gas storage tank (2) is provided with an exhaust mechanism (3), the output end of the exhaust mechanism (3) is communicated with the outside of the shell (1), the left side of the shell (1) is provided with a connecting mechanism (4), the bottom of the connecting mechanism (4) is provided with a buffer tank (5), the right side of the buffer tank (5) is fixedly connected with a two-way joint (6), the right side of the two-way joint (6) is movably connected with a first pipeline (7) and a second pipeline (8), the inside of the shell (1) is fixedly connected with a first compressor (9), the input end of the first compressor (9) is fixedly connected to the bottom end of the first pipeline (7), the top end of the first pipeline (7) is fixedly connected to the outside of the gas storage tank (2), the output end of the first compressor (9) is fixedly connected with a three-way pipe (10), the top end of the three-way pipe (10) is fixedly connected to the bottom end of the first pipeline (7), a filtering device (11) is arranged between the other two ends of the three-way pipe (10), the output end of the filtering device (11) is fixedly connected with a first electromagnetic valve (12), the other end of the first electromagnetic valve (12) is fixedly connected with the left side of the gas storage tank (2) through a pipeline, the outer side of the two-way joint (6) is fixedly connected with a second electromagnetic valve (13), the outer side of the first pipeline (7) is fixedly connected with a third electromagnetic valve (14), and the outer side of the second pipeline (8) is fixedly connected with a fourth electromagnetic valve (15).

2. An SF6 gas recovery purification system according to claim 1, wherein: exhaust mechanism (3) include second compressor (31), connecting pipe (32), fifth solenoid valve (33), blast pipe (34) and check valve (35), the right side fixed connection of second compressor (31) is to the inside of casing (1), the input fixed connection of second compressor (31) is to the one end of connecting pipe (32), the other end fixed connection of connecting pipe (32) is to the left side of gas holder (2), the outside to connecting pipe (32) is installed to fifth solenoid valve (33), the output fixed connection of second compressor (31) is to the one end of blast pipe (34), the other end of blast pipe (34) runs through and fixed connection to the outside of casing (1), the outside to blast pipe (34) is installed to check valve (35).

3. An SF6 gas recovery purification system according to claim 1, wherein: the filtering device (11) comprises two communicating pipes (111), two filters (112) and an output pipe (113), the left ends of the two communicating pipes (111) are fixedly connected to the right two ends of the three-way pipe (10) respectively, the other end of the communicating pipe (111) is fixedly connected to the input end of the filter (112), the output ends of the two filters (112) are fixedly connected to the left side of the first electromagnetic valve (12), and the back faces of the two filters (112) are fixedly connected to the inside of the shell (1).

4. An SF6 gas recovery purification system according to claim 1, wherein: and a first pressure gauge (16) is arranged on the outer side of the position where the first pipeline (7) is communicated with the input end of the first compressor (9), and a second pressure gauge (17) is arranged on the outer side of the connecting position of the output end of the first compressor (9) and the three-way pipe (10).

5. An SF6 gas recovery purification system according to claim 1, wherein: coupling mechanism (4) include I-shaped frame (41), flange (42) and fixture block (43), the one end fixed connection of I-shaped frame (41) is to the top of flange (42), the top fixed connection of bolt and baffle-box (5) is passed through to the bottom of flange (42), the other end joint of I-shaped frame (41) is to the inside of fixture block (43), fixture block (43) are through bolt and I-shaped frame (41) fixed connection, the right side fixed connection of fixture block (43) is to the left side of casing (1).

6. An SF6 gas recovery purification system according to claim 1, wherein: the left side fixedly connected with relief valve (51) of baffle-box (5), the left side fixedly connected with of relief valve (51) connects dop (52).