SF6 gas recovery device for SF6 electrical equipment

Abstract

The utility model discloses an SF6 gas recovery device of SF6 electrical equipment, which relates to the technical field of gas recovery and comprises a support, a driving device and a storage device are respectively arranged in the support, the driving device comprises a vacuum pump and a compressor, and the storage device comprises a first tank body and a second tank body. And the output ends of the vacuum pump and the compressor are communicated with the main pipeline through connecting pipelines. According to the SF6 gas recovery device for the SF6 electrical equipment, the driving device is arranged in the bracket and comprises the vacuum pump and the compressor, so that equipment to be filled can be vacuumized by using the vacuum pump before filling, then filling is performed through the compressor, and recovery can be performed through the compressor during recovery; through the arrangement of the first tank body and the second tank body, new SF6 gas and recycled SF6 gas can be stored respectively, and the situation that impurities are mixed in the recycled SF6 gas, and the purity of the new SF6 gas is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of gas recovery, in particular to a SF6 gas recovery device for SF6 electrical equipment. Background Art

[0002] Publication number: CN210663571U, name: SF6 gas recovery device, which discloses: comprising: a recovery intake pipe, in which a compressor for compressing SF6 gas and a condensing device for condensing the compressed SF6 gas into liquid SF6 are sequentially connected in series along the flow direction of SF6 gas therein; a liquid storage tank, which is connected to the outlet of the recovery intake pipe to store liquid SF6. In order to further filter SF6, the SF6 gas recovery device further includes: at least one impurity filter connected in series in the recovery air intake pipe and used to filter impurities in SF6 gas or liquid SF6; and / or at least one oil-gas separation filter connected in series in the portion of the recovery air intake pipe located between the compressor and the liquid storage tank and used to filter compressor oil mixed in SF6 gas or liquid SF6; the inlet of the recovery air intake pipe is connected to the electrical equipment filled with SF6 gas, the compressor sucks in low-temperature and low-pressure SF6 gas in the electrical equipment, and after compression, discharges high-temperature and high-pressure SF6 gas into the condensing device, and the condensing device condenses the SF6 gas entering therein so that the SF6 gas is condensed into liquid SF6;

[0003] Although the above-mentioned public content realizes the convenient recovery of SF6 gas, two sets of equipment are currently used for the filling and recovery of SF6 gas, namely a recovery device is used for recovery and a filling machine is used for filling. In addition, a vacuum equipment is required to vacuum the filling equipment before filling, which requires more equipment and takes up too much effective space. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an SF6 gas recovery device for SF6 electrical equipment, which solves the problem that although the above-mentioned public content realizes the convenient recovery of SF6 gas, two sets of equipment are currently used for the filling and recovery of SF6 gas, namely, a recovery device is used for recovery and a filling machine is used for filling. In addition, before filling, a vacuum equipment is required to vacuum the equipment to be filled, which results in a large number of equipment being required and takes up too much effective space.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: an SF6 gas recovery device for SF6 electrical equipment, comprising a bracket, in which a driving device and a storage device are respectively arranged, the driving device comprises a vacuum pump and a compressor, the storage device comprises a first tank body and a second tank body, the first tank body and the second tank body are interconnected through a main pipeline, the output ends of the vacuum pump and the compressor are both connected to the main pipeline through a connecting pipeline, an exhaust pipeline is fixedly connected to the peripheral side of the main pipeline and located between the two connecting pipelines, stop valves are fixedly installed at both ends of the main pipeline, the exhaust pipeline and the peripheral side of the connecting pipeline, and a winding device is arranged at the top of the bracket.

[0006] Preferably, the bottom of the first tank body and the bottom of the second tank body are both provided with a weighing device fixedly connected to the bracket, and a buffer assembly is provided between the weighing device and the first tank body and the second tank body.

[0007] Preferably, a plurality of T-shaped blocks are slidably provided on the upper surface of the weighing device, the buffer assembly comprises a support rod whose two ends are rotatably connected to the first tank body, the second tank body and the T-shaped blocks respectively, a T-shaped groove matching the T-shaped block is provided on the upper surface of the weighing device, and a spring is provided in the T-shaped groove to drive the plurality of T-shaped blocks to approach each other.

[0008] Preferably, a perfusion pipe is fixedly connected to the peripheral side of the main pipe and located between the two connecting pipes, and the reeling device includes a reeling frame, and the perfusion pipe is wound around the peripheral side of the reeling frame.

[0009] Preferably, the reel-up frame is an annular tubular structure as a whole, a T-shaped ring block is fixedly connected to the bottom end of the reel-up frame, and a T-shaped ring groove matching the T-shaped ring block is formed at the top end of the bracket.

[0010] Preferably, a limit assembly for limiting the position of the perfusion tube is provided at the top of the reeling frame, and the limit assembly includes a limit rod, and the limit rod is a U-shaped structure as a whole. A boss is fixedly connected to the top of the reeling frame, one end of the limit rod is rotatably connected to the boss through a rotating shaft, and a knob is rotatably connected to the side of the boss, and the end of the knob passes through the boss and contacts the limit rod.

[0011] Beneficial Effects

[0012] The utility model provides a SF6 gas recovery device for SF6 electrical equipment. Compared with the prior art, it has the following beneficial effects:

[0013] (1) The SF6 gas recovery device for SF6 electrical equipment has a driving device arranged in a bracket. The driving device includes a vacuum pump and a compressor, so that the vacuum pump can be used to evacuate the equipment to be filled before filling, and then the filling is carried out through the compressor. The compressor can also be used to recover the gas during recovery. The first tank body and the second tank body can be used to store new SF6 gas and recovered SF6 gas separately, so as to avoid impurities in the recovered SF6 gas, which may affect the purity of the new SF6 gas.

[0014] (2) The SF6 gas recovery device of the SF6 electrical equipment is provided with a reeling device on the bracket, and the reeling device can wind up and store the perfusion pipe to avoid the perfusion pipe being too long and unable to be placed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure of the bracket and the retracting device of the utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure of the drive device and the storage device of the utility model;

[0018] Figure 4 It is an exploded schematic diagram of the connection structure of the storage device and the weighing device of the utility model;

[0019] Figure 5 This is an exploded schematic diagram of the connection structure of the support and the retracting device of the utility model;

[0020] Figure 6 It is an exploded schematic diagram of the connection structure of the limit assembly of the retracting device of the utility model.

[0021] In the figure: 1. bracket; 11. T-ring groove; 2. driving device; 21. vacuum pump; 22. compressor; 23. connecting pipe; 3. storage device; 31. first tank body; 32. second tank body; 33. main pipe; 34. exhaust pipe; 35. filling pipe; 36. stop valve; 4. winding device; 41. winding frame; 411. T-ring block; 412. boss; 42. limit assembly; 421. limit rod; 43. knob; 5. weighing device; 51. T-slot; 6. buffer assembly; 61. support rod; 62. T-block; 63. spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-6 The utility model provides a technical solution: a SF6 gas recovery device for SF6 electrical equipment, comprising a bracket 1, wherein a driving device 2 and a storage device 3 are respectively arranged in the bracket 1, wherein the driving device 2 comprises a vacuum pump 21 and a compressor 22, wherein the storage device 3 comprises a first tank body 31 and a second tank body 32, wherein the first tank body 31 and the second tank body 32 are interconnected via a main pipeline 33, wherein the output ends of the vacuum pump 21 and the compressor 22 are both connected to the main pipeline 33 via a connecting pipeline 23, wherein an exhaust pipeline 34 is fixedly connected to the peripheral side of the main pipeline 33 and is located between the two connecting pipelines 23, wherein stop valves 36 are fixedly installed at both ends of the main pipeline 33, the exhaust pipeline 34 and the peripheral side of the connecting pipeline 23, and a reeling device 4 is arranged at the top of the bracket 1.

[0024] Specifically, the driving device 2 and the storage device 3 are both installed in the bracket 1. The driving device 2 fills, recycles and vacuums the equipment. The first tank body 31 and the second tank body 32 store SF6 gas separately, wherein pure new SF6 and recycled SF6 are stored respectively. The vacuum pump 21 vacuums the equipment for filling, and the compressor 22 fills the equipment and extracts the SF6 in the equipment.

[0025] A weighing device 5 fixedly connected to the bracket 1 is disposed at the bottom of the first tank body 31 and the second tank body 32 , and a buffer assembly 6 is disposed between the weighing device 5 and the first tank body 31 and the second tank body 32 .

[0026] Specifically, the weighing device 5 can weigh the first tank body 31 and the second tank body 32, wherein the weighing device 5 is a prior art, so that the weight of recovery and infusion can be weighed, and the buffer assembly 6 buffers the first tank body 31 and the second tank body 32 to prevent the vibration generated when the vacuum pump 21 and the compressor 22 are started from causing a large collision between the first tank body 31 and the second tank body 32 and the weighing device 5, thereby causing damage to the weighing device 5.

[0027] A plurality of T-shaped blocks 62 are slidably provided on the upper surface of the weighing device 5. The buffer assembly 6 includes a support rod 61 whose two ends are rotatably connected to the first tank body 31, the second tank body 32 and the T-shaped block 62 respectively. A T-shaped groove 51 matching the T-shaped block 62 is provided on the upper surface of the weighing device 5. A spring 63 is provided in the T-shaped groove 51 for driving the plurality of T-shaped blocks 62 to approach each other.

[0028] Specifically, the spring 63 is compressed to buffer the force generated by the vibration. During the buffering, the T-shaped block 62 slides in the T-shaped groove 51, thereby compressing the spring 63, thereby achieving buffering of the vibration force.

[0029] A perfusion pipe 35 is fixedly connected to the circumference of the main pipe 33 and between the two connecting pipes 23 . The reeling device 4 includes a reeling frame 41 . The perfusion pipe 35 is wound around the circumference of the reeling frame 41 .

[0030] Specifically, in order to facilitate the filling and recovery of the equipment and avoid the filling tube 35 being insufficient in length, the filling tube 35 will be as long as possible when rotating. After the filling and recovery are completed, the filling tube 35 does not have a special storage device, which will cause the filling tube 35 to be placed in a scattered manner, thereby creating certain safety hazards.

[0031] The reel-up frame 41 is an annular tubular structure as a whole. A T-shaped ring block 411 is fixedly connected to the bottom end of the reel-up frame 41 . A T-shaped ring groove 11 matching the T-shaped ring block 411 is formed at the top end of the bracket 1 .

[0032] Specifically, the perfusion tube 35 is wound on the reel-up frame 41 so that the perfusion tube 35 can be retracted, and the T-ring block 411 is rotatably connected to the bracket 1 through the T-ring groove 11, so that the perfusion tube 35 can be easily released.

[0033] A limit assembly 42 for limiting the position of the perfusion tube 35 is provided at the top of the winding frame 41, and the limit assembly 42 includes a limit rod 421. The limit rod 421 is a U-shaped structure as a whole. A boss 412 is fixedly connected to the top of the winding frame 41, and one end of the limit rod 421 is rotatably connected to the boss 412 through a rotating shaft. A knob 43 is rotatably connected to the side of the boss 412, and an end of the knob 43 passes through the boss 412 and contacts the limit rod 421.

[0034] Specifically, the limiting assembly 42 limits the position of the perfusion tube 35 to prevent the perfusion tube 35 from loosening when being entangled.

[0035] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0036] During operation, the vacuum pump 21 evacuates the equipment, and then the compressor 22 fills the equipment. During recovery, the compressor 22 can recover the SF6 in the equipment. After use, the filling tube 35 is wound around the reeling device 4, and then the limiting assembly 42 is rotated to limit the filling tube 35 to prevent it from loosening.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A SF6 gas recovery device for SF6 electrical equipment, characterized in that: It comprises a support (1), wherein a driving device (2) and a storage device (3) are respectively arranged in the support (1); The driving device (2) comprises a vacuum pump (21) and a compressor (22); the storage device (3) comprises a first tank body (31) and a second tank body (32); the first tank body (31) and the second tank body (32) are connected to each other via a main pipeline (33); and the output ends of the vacuum pump (21) and the compressor (22) are connected to the main pipeline (33) via a connecting pipeline (23); An exhaust pipe (34) is fixedly connected to the peripheral side of the main pipe (33) and located between the two connecting pipes (23); both ends of the main pipe (33), the exhaust pipe (34) and the peripheral side of the connecting pipe (23) are fixedly installed with stop valves (36); A reeling device (4) is provided at the top end of the bracket (1).

2. The SF6 gas recovery device for SF6 electrical equipment according to claim 1, characterized in that: The bottom of each of the first tank body (31) and the second tank body (32) is provided with a weighing device (5) fixedly connected to the bracket (1), and a buffer assembly (6) is provided between the weighing device (5) and the first tank body (31) and the second tank body (32).

3. The SF6 gas recovery device for SF6 electrical equipment according to claim 2, characterized in that: A plurality of T-shaped blocks (62) are slidably arranged on the upper surface of the weighing device (5); the buffer assembly (6) comprises a support rod (61) whose two ends are rotatably connected to the first tank body (31), the second tank body (32) and the T-shaped block (62), respectively; a T-shaped groove (51) matching the T-shaped block (62) is provided on the upper surface of the weighing device (5); a spring (63) is arranged in the T-shaped groove (51) for driving the plurality of T-shaped blocks (62) to approach each other.

4. The SF6 gas recovery device for SF6 electrical equipment according to claim 1, characterized in that: A perfusion pipe (35) is fixedly connected to the peripheral side of the main pipe (33) and located between the two connecting pipes (23). The reeling device (4) comprises a reeling frame (41), and the perfusion pipe (35) is wound around the peripheral side of the reeling frame (41).

5. The SF6 gas recovery device for SF6 electrical equipment according to claim 4, characterized in that: The reeling frame (41) is an annular tubular structure as a whole. The bottom end of the reeling frame (41) is fixedly connected to a T-shaped ring block (411). The top end of the bracket (1) is provided with a T-shaped ring groove (11) matching the T-shaped ring block (411).

6. The SF6 gas recovery device for SF6 electrical equipment according to claim 4, characterized in that: A limiting assembly (42) for limiting the position of the perfusion tube (35) is arranged at the top end of the reeling frame (41), and the limiting assembly (42) includes a limiting rod (421), and the limiting rod (421) is a U-shaped structure as a whole. A boss (412) is fixedly connected to the top end of the reeling frame (41), and one end of the limiting rod (421) is rotatably connected to the boss (412) through a rotating shaft, and a knob (43) is rotatably connected to the side of the boss (412), and an end of the knob (43) passes through the boss (412) and contacts the limiting rod (421).

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