CN201348134Y

CN201348134Y - SF6 liquid storage device with cooling function

Info

Publication number: CN201348134Y
Application number: CNU2008201581806U
Authority: CN
Inventors: 秦锋; 丁益良; 宋新颖
Original assignee: SHANGHAI RAYGE INSTRUMENTS CO Ltd
Current assignee: SHANGHAI RAYGE INSTRUMENTS CO Ltd
Priority date: 2008-12-30
Filing date: 2008-12-30
Publication date: 2009-11-18
Anticipated expiration: 2018-12-30

Abstract

An SF6 liquid storage device with a cooling function comprises a tank body which is used to store SF6 gas. The SF6 liquid storage device is characterized in that a cooling coil is arranged inside the tank body, and coolant medium is filled in the hollow cooling coil which is a spiral cooling coil. The sidewall of the tank body is provided with an opening through which the cooling coil is put into the tank body and which is provided with an end cover, and both ends of the cooling coil pass through the end cover and are connected with a coolant medium compressor. A connecting seat which corresponds to the end cover is fixed on the opening, and the end cover is hermetically connected with the connecting seat through bolts. During use, the coolant medium is filled in the cooling coil, the SF6 gas in the tank body is cooled into liquid, for the cooling coil is extended into the tank body, and thereby more SF6 gas can be contained in the tank body.

Description

A kind of SF that has refrigerating function 6Device for storing liquid

Technical field

The utility model relates to a kind of gas concentration unit, particularly electric power system SF ₆Gas concentration unit relates in particular to SF ₆Gas recycling can in the gas concentration unit.

Background technique

In the electric power system industry, sulphur hexafluoride (SF ₆) as a kind of important arc extinguishing insulating medium, be widely used in circuit breaker, GIS, transformer, mutual inductor, linear accelerator, concentric cable, waveguide, X-ray equipment and the capacitor, under the electrion state, SF6 can decomposite HF, F+, SO ₂Etc. multiple charged polar component.These become branch to weaken the insulating properties of insulating gas, and therefore, this insulating gas must regularly be changed.And in the Kyoto Protocol in 1997 just with SF ₆Classify greenhouse gases as, a SF ₆Molecule is a CO to the influence of greenhouse effect ₂25000 times of molecule enter the SF of atmosphere ₆The gas life-span is grown (about 3200) especially, and SF ₆Decompose and to produce SO ₂, HF, H ₂S, SOF ₂, SO ₂F ₂: wait toxic gas, therefore do not allow the SF in the high-tension switch gear ₆Gas directly discharges in atmosphere.

Yet above-mentioned high-tension switch gear may run into SF ₆In case the leakage problem of gas is the SF that high-tension switch gear leaks ₆Gas reaches the protection upper-bound limit, and great serious accident will take place, and the result causes heavy economic losses and negative social influence.Switch trip takes place suddenly in high-voltage switch gear when normal operation, perhaps leak at normal air chamber in service, and perhaps periodic maintenance need be to SF in this type of high-tension switch gear ₆Gas reclaims.

Conventional SF ₆Gas concentration unit, liquid container are important components, liquid container storing liquid SF ₆Gas.But when ambient temperature raises, the liquid SF of liquid container inside ₆Gas is gasification rapidly under the situation that temperature raises, and makes the interior saturated vapour pressure of liquid container rise, the normal operation of restriction whole recovery device, and when serious, safety valve reaches cracking pressure, discharges a large amount of SF ₆Gas, the compressive strength of liquid container is subjected to one-shot simultaneously.

The model utility content

Technical problem to be solved in the utility model is, overcomes problems of the prior art, and a kind of SF that has refrigerating function is provided ₆Device for storing liquid is optimized SF ₆Gas concentration unit.

In order to address the above problem the technical solution of the utility model is such:

Cooling unit in the past is an externally-arranged type, promptly by after the jar external refrigeration, and SF ₆In the liquid input jar, shortcoming waste cold energy, rate of cooling is slow, is a kind of SF that has refrigerating function now ₆Device for storing liquid comprises that is used to store a SF ₆The tank body of gas has the refrigerant medium in the cooling coil, described cooling coil is special screw type cooling coil.SF ₆Gas is rapid refrigeration cooling at the jar center, promptly directly cools back the SF that takes in in the jar in jar inside ₆Gas, advantage is, saves cold energy, and rate of cooling improves, and the recovery rate increases, and measure is to be provided with a cooling coil in tank interior.

Described tank wall is provided with a mount inlet, and described cooling coil is put into tank body by this mount inlet, and described mount inlet is provided with end cap, and the import and export of described cooling coil are passed end cap and linked to each other with refrigerant medium compressor.

Be set with the connecting base corresponding with end cap on the described mount inlet, described end cap is connected by bolt seal with connecting base.

During use, be connected with the refrigerant medium in the cooling coil, because coil pipe stretches into tank interior, can be with the SF of tank interior ₆It is liquid that gas cooling becomes, thereby make tank body hold more SF ₆Gas.SF ₆Fluid density compares SF ₆The high hundred times of gas density.

Beneficial effect, the utility model is simple in structure, and is easy to assembly, adopts cooling coil to tank interior SF ₆Gas cools off fast, and a jar interior temperature can descend and cause-20 ℃, can effectively reduce the temperature of tank interior, stops SF ₆Gasification makes a jar interior SF ₆Be liquid condition, so that tank body stores more SF ₆Gas.Simultaneously, can make SF ₆Compressor Discharge Pressure reduces, and improves Security and working life, reduces product cost (high pressure SF ₆Compressor price height) is higher than 30 ℃ when ambient temperature, manifests the advantage of the utility model technology gradually.

Description of drawings

Describe the utility model in detail below in conjunction with the drawings and specific embodiments;

Fig. 1 is a kind of SF that has cooling unit described in the utility model ₆The structural representation of gas recycling can;

Fig. 2 overlooks result schematic diagram for end cap described in the utility model;

Fig. 3 is cooling coil described in the utility model and tank body separated state structural representation.

Embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.

Referring to Fig. 1

A kind of SF that has refrigerating function ₆Device for storing liquid comprises that is used to store a SF ₆The tank body 1 of gas, tank body 1 is the sealing load jar, and tank body 1 is circular, and last bottom surface is a spherical.Wherein descend the ground arranged outside that a base 2 is arranged, base 2 is fixedlyed connected with tank body 1, and base 2 is used to support tank body 1.Has SF on the tank body 1 ₆The suction port 11 of gas and air outlet 12.SF ₆Gas enters tank body 1 inside from

suction port

11, and 12 discharge tank body 1 from the air outlet.

Referring to Fig. 2 and Fig. 3

In order to cool off the SF of tank body 1 inside ₆Gas is provided with a cooling coil 3 in tank body 1 inside.Cooling coil 3 is the screw type cooling coil, and cooling coil 3 is arranged on the medium position of tank body 1, can carry out fully effectively cooling to tank body 1.Coil pipe 3 is set to the heat exchange area that screw type can increase cooling coil 3 in addition, increases heat exchange efficiency.Cooling coil 3 can also be coiler, can reach the effect that increases heat exchange area, increases heat exchange efficiency equally.Cooling coil 3 inner hollow, and be connected with the refrigerant medium, the two ends of cooling coil 3 connect refrigerant medium compressor respectively, behind the refrigerant medium compressor start, the refrigerant medium circulates in cooling coil 3, and carries out heat exchange in tank body 1 inside, makes the SF of tank body 1 inside ₆Gas cooling is to liquid.

For cooling coil 3 being assemblied in tank body 1 inside, the sidewall of tank body 1 is provided with an opening 13, and cooling coil 3 is put into tank body 1 inside by opening 13.In order to keep the sealing of tank body 1, opening 13 is provided with end cap 31, in order to make end cap 31 cover opening 13 preferably, opening 13 is provided with connecting base 14, connecting base 14 is fixed on the opening, the two ends of cooling coil 3 are passed end cap 31 and are connected with refrigerant medium compressor, to cover on connecting base 14 be opening sealing to described end cap 31 during assembling, end cap 31 is fixedlyed connected by six bolts 32 with connecting base 14, also be provided with the rubber washer that seals between end cap 31 and the connecting base 14, when clamping bolt 32, end cap 31 covers connecting base 14, makes the opening sealing.

Compared with prior art, the utility model is simple in structure, and is easy to assembly, adopts 3 pairs of tank body 1 inside of cooling coil to cool off, and can effectively reduce the temperature of tank interior, prevents SF ₆Gasification makes SF ₆Be in liquid condition as much as possible, so that tank body stores more SF ₆Gas.That certain tank body described in the utility model also can be stored other and SF ₆The gas that the gas physical property is similar.

More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1, a kind of SF that has refrigerating function ₆Device for storing liquid comprises that is used to store a SF ₆The tank body of gas is characterized in that, described tank interior is provided with a cooling coil, and the cooling coil inner hollow also is connected with the refrigerant medium, and described cooling coil is the screw type cooling coil.

2, a kind of SF that has refrigerating function according to claim 1 ₆Device for storing liquid is characterized in that, described tank wall is provided with an opening, and described cooling coil is put into tank body by this opening, and described opening is provided with end cap, and the two ends of described cooling coil are passed end cap and linked to each other with refrigerant medium compressor.

3, a kind of SF that has refrigerating function according to claim 2 ₆Device for storing liquid is characterized in that, is set with the connecting base corresponding with end cap on the described opening, and described end cap is connected by bolt seal with connecting base.