CN202729797U

CN202729797U - Sulfur hexafluoride gas purification refinement curing tank

Info

Publication number: CN202729797U
Application number: CN 201220395652
Authority: CN
Inventors: 郑元华
Original assignee: JIANG HNP ELECTRIC TECHNOLOGY Co Ltd
Current assignee: JIANG HNP ELECTRIC TECHNOLOGY Co Ltd
Priority date: 2012-08-10
Filing date: 2012-08-10
Publication date: 2013-02-13
Anticipated expiration: 2022-08-10

Abstract

The utility model relates to a sulfur hexafluoride gas purification refinement curing tank which comprises a tank body (15). An insulating layer (9) is arranged inside the tank body (15). A heater (10) is arranged inside the insulating layer (9). The top of the tank body (15) is provided with an air inlet (3) and an inlet valve (4). A liquid nitrogen refrigerating coil (14) is installed inside the tank body (15) and is respectively provided with a liquid nitrogen gas inlet (7) and a liquid nitrogen gas outlet (8) to be communicated with the outside of the tank, the bottom of the tank body is provided with a liquid outlet (12) and a liquid outlet valve (13), and the tank body (15) is positioned on a weighing mechanism (11). The sulfur hexafluoride gas purification refinement curing tank has the advantages of being high in treatment efficiency, high in gas purity after gas is processed, pollution-free in offgas and the like.

Description

A kind of sulfur hexafluoride gas purification is purified and is solidified tank

Technical field

The utility model belongs to the sulfur hexafluoride gas processing technology field, especially the sulfur hexafluoride gas purification equipment for purifying.

Background technology

Purification mainly contains pressure-variable adsorption, membrane sepn, liquefaction or their combination to sulfur hexafluoride gas in the existing market, mainly for be directly the sulfur hexafluoride in the high-voltage switch gear to be carried out purification, these methods in the existing market, exist unavoidably processing speed lower, treatment capacity is little, the problems such as complex process, and mainly be imported product, price is high.

In the liquefaction processing method of for example commonly using at present, after the gas-liquid separation, the sulfur hexafluoride in the mixed gas is saturation steam, and sulfur hexafluoride content is higher, not entering atmosphere before processing, also can cause environmental pollution otherwise not only waste gas.

Summary of the invention

The utility model aims to provide the sulfur hexafluoride purification device that a kind of processing efficiency is high, process the advantages such as rear gas purity is high, tail gas is pollution-free.

Sulfur hexafluoride gas purification of the present utility model is purified and is solidified tank, comprise tank body 15, the tank body 15 interior thermal insulation layers 9 that arrange, the thermal insulation layer 9 interior well heaters 10 that arrange, tank body 15 tops are provided with inlet mouth 3 and air intake valve 4, liquid nitrogen refrigerating coil pipe 14 in tank body 15 liquid nitrogen inlet mouth 7 is set respectively also and liquid nitrogen air outlet 8 is communicated with outside the filling, and tank base arranges liquid outlet 12 and fluid valve 13, and described tank body 15 is arranged on the Weighing mechanism 11.

Also be provided with temperature sensor 1 and pressure unit 2 on the tank body 15.

Pressure release valve 5 is established at tank body 15 tops.

Tank body 15 tops also are provided with guard circle 6.

Curing tank of the present utility model, can utilize liquid nitrogen (the liquid nitrogen temperature is-196 ℃) that temperature in the tank body is reduced, after temperature in the tank body is significantly less than the zero pour of sulfur hexafluoride (sulfur hexafluoride zero pour-63 ℃), sulfur hexafluoride will be solidified into solid fully, the gas solubleness therein such as process of setting Air and carbonic acid gas constantly descend and finally fully therefrom separate out, the content of sulfur hexafluoride gas is few in the mixed gas at this moment, by vacuumizing solid-state sulfur hexafluoride and the air of gaseous state, the gas delivery such as carbonic acid gas, therefore sulfur hexafluoride content is few in the expellant gas, reduced the unnecessary waste of sulfur hexafluoride, and the Exhaust Gas environmental pollution is less.As using liquefaction to separate, isolated gas is the mixed gas of a large amount of sulfur hexafluoride saturated gases and the gases such as air, carbonic acid gas, is difficult to separate, and can not directly discharge, and also needs other tank body to process, and can not separate in same tank.Therefore curing jar structure of the present utility model is simple and reliable, and processing efficiency is high, and gas purity is high after processing, and tail gas is pollution-free, is beneficial to popularization.

Description of drawings

Fig. 1 is that sulfur hexafluoride purification of the present invention solidifies the tank synoptic diagram.

Among the figure: 1, temperature sensor; 2, pressure unit; 3, inlet mouth; 4, air intake valve; 5, pressure release valve; 6, guard circle; 7, liquid nitrogen inlet mouth; 8, liquid nitrogen air outlet; 9, thermal insulation layer; 10, well heater; 11, Weighing mechanism; 12, liquid outlet; 13, fluid valve; 14, liquid nitrogen refrigerating coil pipe; 15, tank body.

Embodiment

Sulfur hexafluoride gas purification of the present utility model is purified and is solidified tank, structure as shown in Figure 1, the tank body 15 of double-layer stainless steel, the tank body 15 interior thermal insulation layers 9 that arrange, the thermal insulation layer 9 interior well heaters 10 that arrange, tank body 15 tops are provided with inlet mouth 3 and air intake valve 4, and liquid nitrogen refrigerating coil pipe 14 in tank body 15 liquid nitrogen inlet mouth 7 is set respectively also and liquid nitrogen air outlet 8 is communicated with outside the filling, tank base arranges liquid outlet 12 and fluid valve 13, and described tank body 15 is arranged on the Weighing mechanism 11.

Also be provided with temperature sensor 1 and pressure unit 2 on the tank body 15, the top arranges pressure release valve 5, and tank body 15 tops also are provided with guard circle 6.

Adopt sulfur hexafluoride gas purification of the present utility model to purify and solidify the using method of tank, comprise the steps:

Step 1, pending sulfur hexafluoride gas is introduced in the utility model structures curing tank as shown in Figure 1 by inlet mouth 3, this moment, air intake valve 4 was opened, and fluid valve 13 is closed; Pass into liquid nitrogen to the liquid nitrogen inlet mouth 7 of the liquid nitrogen refrigerating coil pipe 14 that solidifies tank and reduce that temperature to sulfur hexafluoride gas liquefies in the tank;

Step 2, continue to be filled with pending sulfur hexafluoride gas, Weighing mechanism 11 is weighed to tank body simultaneously, after the upper limit that reaches preset value, closes air intake valve 4, continues to pass into liquid nitrogen cooling to the sulfur hexafluoride of liquefaction at liquid nitrogen inlet mouth 7 and is frozen into solid-state;

Step 3, to the tank sulfur hexafluoride be frozen into solid-state after, the foreign gases such as air and carbonic acid gas still are gas at this moment, open air intake valve 4, to solidify in the tank residual gas by inlet mouth 3 is drawn in the neutralization tank and reclaims, the obnoxious flavour of remnants is dissolved and adsorb, finally can not damage environment;

Step 4, after surplus air is taken out to the greatest extent, close air intake valve 4, the solid-state sulfur hexafluoride in the tank that is heating and curing becomes liquid state to it, open fluid valve 13, liquid sulfur hexafluoride is extracted out by the liquid outlet 12 that the bottom arranges, can be obtained pure sulfur hexafluoride, recharge or can to steel cylinder.

Claims

1. a sulfur hexafluoride gas purification is purified and is solidified tank, it is characterized in that: comprise tank body (15), thermal insulation layer (9) is set in the tank body (15), well heater (10) is set in the thermal insulation layer (9), tank body (15) top is provided with inlet mouth (3) and air intake valve (4), liquid nitrogen refrigerating coil pipe (14) also arranges respectively liquid nitrogen inlet mouth (7) and liquid nitrogen air outlet (8) and is communicated with outside the filling in tank body (15), tank base arranges liquid outlet (12) and fluid valve (13), and described tank body (15) is arranged on the Weighing mechanism (11).

2. sulfur hexafluoride gas purification according to claim 1 is purified and is solidified tank, it is characterized in that: also be provided with temperature sensor (1) and pressure unit (2) on the tank body (15).

3. sulfur hexafluoride gas purification according to claim 1 is purified and is solidified tank, and it is characterized in that: pressure release valve (5) is established at tank body (15) top.

4. sulfur hexafluoride gas purification according to claim 1 is purified and is solidified tank, and it is characterized in that: tank body (15) top also is provided with guard circle (6).