Small mobile recovery device

Abstract

A small-sized mobile recovery device comprises a box body, a gas storage tank, a gas recovery module and a refrigeration module, a gas storage tank, a gas recovery module for recovering gas in the switch into the gas storage tank, and a refrigeration module for cooling the gas in the gas storage tank are loaded in the box body; the gas recycling module comprises a gas inlet, a high-pressure pump, a one-way valve and a gas outlet which are sequentially connected through gas pipelines, a pressure gauge is arranged on an outlet pipeline of the one-way valve, the gas inlet is connected with a small switch to be recycled through a gas guiding pipeline, and the gas outlet is connected with a gas inlet and outlet of a gas storage tank through a connecting pipeline; the box body is provided with a telescopic pull rod, and the bottom is provided with trundles. The gas recovery device is small in size, light in weight, portable, capable of moving, and suitable for gas recovery in small switches with complex roads and working environments.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the gas recovery technical field in switch belongs to the switch protection gas SF6's recovery device. BACKGROUND

[0002] The old SF6 gas in the switch needs to be recovered when the switch equipment is overhauled or new gas is replaced.

[0003] In the power equipment, the small-sized sulfur hexafluoride switch of 1-2kg gas, the middle and large recovery vehicles are not suitable for use because the recovery power is too large, and the switch applied in the railway and subway is difficult for the middle and large recovery vehicles or recovery devices to enter the scene operation because of the road and operation environment. Therefore, developing a small-sized portable recovery device of mobile operation can effectively solve the problem of high-efficiency recovery of the SF6 gas in the small-sized switch. SUMMARY

[0004] In order to solve the problem of recovering the old SF6 gas in the switch when the small-sized switch equipment is overhauled or new gas is replaced, and the problem that the middle and large recovery vehicles are difficult to reach the scene operation because of the road in the scene application of the switch equipment of the railway and subway, the utility model provides a small-sized mobile recovery device with small volume and mobile operation.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme,

[0006] A small-sized mobile recovery device, comprising a box body, a gas storage tank, a gas recovery module and a refrigeration module.

[0007] The box body is loaded with the gas storage tank, the gas recovery module for recovering the gas in the switch to the gas storage tank and the refrigeration module for cooling the gas in the gas storage tank.

[0008] The gas recovery module comprises an air inlet, a high-pressure pump, a one-way valve and an air outlet which are sequentially connected through a gas pipeline, and a pressure gauge is arranged on the outlet pipeline of the one-way valve, the air inlet is connected to the small-sized switch to be recovered through a gas pipeline, and the air outlet is connected to the air inlet and outlet of the gas storage tank through a connecting pipeline.

[0009] The box body is provided with an extension pull rod and a plurality of wheels at the bottom for moving the box body.

[0010] Further, a heat dissipation fan for dissipating heat in the box is arranged on the box.

[0011] Further, a clamp for quickly disassembling and assembling the gas storage tank is arranged on the box.

[0012] Further, the refrigeration module comprises a refrigeration compressor and a cylindrical refrigeration tank with an open upper end, and a refrigeration circuit is formed between the refrigeration compressor and the refrigeration tank through a copper pipe, the refrigeration circuit is filled with refrigerant, and a movable storage tank is arranged in a seat cylinder of the refrigeration tank.

[0013] Further, the refrigerant is an environmentally friendly refrigerant.

[0014] The working principle of the gas recovery module is that a small switch to be recovered is connected to an air inlet through an air guide pipeline, the air inlet is connected to a high-pressure pump, SF6 high-pressure gas is formed after being pressurized by the high-pressure pump, the high-pressure gas is prevented from returning through a one-way valve, is led out of the box through an air outlet, a manual valve of an inlet and an outlet of the storage tank is opened, and finally, the SF6 high-pressure gas is pressurized into the storage tank through a connecting pipeline. A pressure gauge at the outlet of the one-way valve monitors the pressure in the storage tank in real time, and serves as a guide for the empty / full state of the storage space of the storage tank.

[0015] Refrigeration liquefaction. The storage tank is filled with SF6 high-pressure gas, the SF6 high-pressure gas in the storage tank is refrigerated by the refrigeration module, becomes low-temperature gas, and is then liquefied under high-pressure and low-temperature conditions. When the reading of the pressure gauge reaches a set upper limit value, the storage tank is considered to be full, then, the manual valve of the inlet and outlet of the storage tank is closed, the connecting pipeline is removed, the knob of the clamp is unscrewed, and the storage tank is removed. New empty storage tanks can be used for continuous operation.

[0016] The box is provided with telescopic pull rods on the side and a plurality of casters at the bottom, so that portable and mobile operation is realized.

[0017] The refrigeration tank is refrigerated by the refrigeration compressor, and the low temperature of the refrigeration tank is conducted to the storage tank. The refrigeration tank is cylindrical and has an open upper end, and the storage tank is arranged in a seat cylinder of the refrigeration tank. The low temperature of the refrigeration tank is conducted to the storage tank. The storage tank is fixed firmly by a clamp. The refrigerant of the refrigeration module is an environmentally friendly refrigerant, such as R-410A, R-290, R-600A, etc.

[0018] The integrated gas recovery module and refrigeration module on the portable box realize recovery of switch gas, and through refrigeration, the recovered gas is liquefied and stored by using the characteristics of SF6 high-pressure and low-temperature liquefaction, so that more switch protection gas SF6 can be recovered and stored in the limited storage space. In the design of the storage tank, the integrated design of the box and the tank is abandoned, and a split quick disassembly and fixation mode is selected, so that the storage tank can be replaced at any time without the need for frequent secondary recovery and cleaning of the gas in the storage tank, which is convenient for users to use multiple times and improves the recovery efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic diagram of the utility model;

[0020] Figure 2It is the principle diagram of the utility model.

[0021] Figures 1-2 Among them, 1 - box, 2 - pull rod, 3 - clamp, 4 - gas tank, 5 - gas outlet, 6 - gas inlet, 7 - pressure gauge, 8 - caster, 9 - cooling fan. DETAILED DESCRIPTION

[0022] In order to make the person in the technical field better understand the technical scheme in the embodiment of the present application, and make the above-mentioned purpose, characteristics and advantages of the present application can be more obvious and easy to understand, the specific embodiments of the present application are further described below with reference to the drawings.

[0023] It should be noted that the description of these embodiments is used to help understand the present application, but does not constitute a limitation on the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0024] A small mobile recycling device, comprising a box 1, a gas tank 4, a gas recovery module, a refrigeration module;

[0025] The box 1 is loaded with a gas tank 4, a gas recovery module for recovering gas in the switch to the gas tank 4, and a refrigeration module for cooling the gas in the gas tank 4;

[0026] The gas recovery module comprises an air inlet 6, a high-pressure pump, a one-way valve and an air outlet 5 connected in sequence by a gas pipeline, a pressure gauge 7 is arranged on the outlet pipeline of the one-way valve, the air inlet 6 is connected to the small switch to be recycled through the gas pipeline, and the air outlet 5 is connected to the air inlet and outlet of the gas tank 4 through the connecting pipeline;

[0027] The box 1 is provided with an extension pull rod 2 on the side, and a plurality of casters 8 for moving the box are arranged on the bottom, so that portable and mobile operation is realized.

[0028] Further, the box 1 is provided with a cooling fan 9 for cooling the space in the box. The cooled SF6 gas will release heat, and it is feasible to install a cooling component on the box. The cooling fan is one of the common ways.

[0029] Further, the box 1 is provided with a clamp 3 for quickly dismounting and mounting the gas tank 4. In order to facilitate operation, the gas tank 4 needs to be fixed, and the replacement of the full gas tank 4 is also considered.

[0030] The refrigeration module has many implementation modes, and the refrigeration surface can be wrapped around the gas tank 4. Figure 1 And Figure 2In the shown embodiment, the refrigeration module comprises a refrigeration compressor and a cylindrical refrigeration tank with an open upper end, and a refrigeration circuit is formed between the two through copper pipes, the refrigeration circuit is filled with refrigerant, and a gas storage tank 4 is arranged in the cylinder of the refrigeration tank. The refrigerant uses an environmentally friendly refrigerant. The refrigeration tank is refrigerated by the refrigeration compressor, the refrigeration tank has a cylindrical upper part which is open, and the gas storage tank 4 is seated in the seat cylinder of the refrigeration tank, so that the low temperature of the refrigeration tank is conducted to the gas storage tank 4. The refrigerant of the refrigeration module uses an environmentally friendly refrigerant, such as R-410A, R-290, R-600A, etc., to avoid adverse effects on the environment.

[0031] Working principle. The small switch to be recycled is connected to the gas inlet 6 through the gas inlet pipeline, the gas inlet 6 is connected to the high-pressure pump, and the SF6 high-pressure gas is formed after being pressurized by the high-pressure pump. The high-pressure gas is prevented from returning through the one-way valve, is led out of the box 1 through the gas outlet 5, and the inlet and outlet manual valves of the gas storage tank 4 are opened. Through the connecting pipeline, the gas is finally pressed into the gas storage tank 4. The pressure gauge 7 at the outlet of the one-way valve monitors the pressure in the gas storage tank 4 in real time, and serves as a guide for the empty and full states of the storage space of the gas storage tank 4. Figure 1 The arrow between the refrigeration module and the gas storage tank is the refrigeration circuit, and the arrow between the high-pressure pump and the gas storage tank 4 is the flow direction of the gas.

[0032] The gas storage tank 4 is filled with SF6 high-pressure gas, and the SF6 high-pressure gas in the gas storage tank 4 is refrigerated by the refrigeration module to become low-temperature gas, and then is liquefied under high-pressure and low-temperature conditions. When the reading of the pressure gauge 7 reaches the set upper limit value, it is considered that the gas storage tank 4 is full. At this time, the manual valve of the gas inlet and outlet of the gas storage tank 4 is closed, the connecting pipeline is removed, the knob of the clamp 3 is unscrewed, and the gas storage tank 4 is removed. New empty gas storage tank can continue to work.

[0033] In order to facilitate operation, the start and stop of the key components high-pressure pump and refrigeration compressor are controlled through a simple button switch, and the above-mentioned button switch is arranged on the surface of the box 1, which is easy to operate by the operator. Similarly, the gas inlet 6 and the gas outlet 5 of the gas recovery module are arranged on the surface of the box 1, which is easy to operate by the operator, and other components are arranged in the box. The method of arranging the inside of the box is commonly used and feasible.

[0034] The utility model integrates the gas recovery module and the refrigeration module on the portable case, realizes the recovery of switch gas, and refrigerates the switch gas. By using the characteristics of SF6 high-pressure and low-temperature liquefaction, the recovered gas can be liquefied and stored, and the limited storage space can store more switch protection gas SF6. In the design of the gas storage tank, a split quick disassembly and assembly fixing mode is selected, which facilitates the replacement of the gas storage tank, facilitates the repeated use of the user, and improves the recovery efficiency.

[0035] Generally, the volume of the middle and large recycling equipment is about 3000mm*1500mm*1500mm, and the weight reaches about 600-800kg, the utility model has few components, the product volume is about 400mm*300mm*300mm, and the weight is 25kg, and the telescopic pull rod and the trundle are provided, and one person can work alone.

[0036] Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. In addition, it should be understood that, although the present application is described in the form of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A compact mobile recycling device, characterized by: It comprises a box (1), a gas storage tank (4), a gas recovery module and a refrigeration module. The box (1) is loaded with a gas storage tank (4), a switch gas recycling device (2) for recycling the gas in the switch to the gas storage tank (4) The gas recovery module , and a refrigeration module for cooling the gas in the gas storage tank (4). The gas recovery module comprises an air inlet (6), a high-pressure pump, a one-way valve and an air outlet (5) connected in sequence through gas pipelines, a pressure gauge (7) is arranged on the outlet pipeline of the one-way valve, the air inlet (6) is connected with a small switch to be recovered through an air guide pipeline, and the air outlet (5) is connected with the air inlet and outlet of the gas storage tank (4) through a connecting pipeline. The box (1) is provided with telescopic pull rods (2) and a plurality of casters (8) for moving the box.

2. A compact mobile recycling device according to claim 1, characterized in that: A heat dissipation fan (9) for dissipating heat in the box is arranged on the box (1).

3. A small mobile recycling device according to claim 1 or 2, characterised in that: A clamp (3) for quickly disassembling and fixing the gas storage tank (4) is arranged on the box (1).

4. A compact mobile recycling device according to claim 1, wherein: The refrigeration module comprises a refrigeration compressor and a cylindrical refrigeration tank with an open upper end, a refrigeration circuit is formed between the two through a copper pipe, the refrigeration circuit is filled with refrigerant, and the gas storage tank (4) is movably arranged in the seat cylinder of the refrigeration tank.

5. The small mobile recovery device according to claim 4, characterized in that: The refrigerant is an environmentally friendly refrigerant.

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