CN203131137U

CN203131137U - Safe gas discharging valve

Info

Publication number: CN203131137U
Application number: CN2012206744948U
Authority: CN
Inventors: 程杰; 赵鹏程; 谢自立; 文越华; 徐艳; 陆超
Original assignee: ZHANGJIAGANG SMARTGRID RENEWABLE ENERGY AND ENERGY STORAGE TECHNOLOGY INSTITUTE Co Ltd; 63971 Troops of PLA
Current assignee: ZHANGJIAGANG SMARTGRID RENEWABLE ENERGY AND ENERGY STORAGE TECHNOLOGY INSTITUTE Co Ltd; 63971 Troops of PLA
Priority date: 2012-12-10
Filing date: 2012-12-10
Publication date: 2013-08-14
Anticipated expiration: 2022-12-10

Abstract

The utility model provides a safe gas discharging valve, relates to a method and a device for gas pressure automatic control and safe discharging, and particularly relates to a method and device for safe discharging of gas in a closed system such as a flow cell. According to the safe gas discharging valve, balance between spring elasticity and pressure difference of gas on two sides of the valve is utilized to achieve automatic control of the opening and closing of the valve, and therefore gas pressure safety in the closed system is guaranteed. The safe gas discharging valve is composed of a valve body, a valve cover, a spring and a valve anvil, wherein the valve cover is connected with the valve anvil through the spring, after the connection, the valve cover, the valve anvil and the spring are all located in a cavity body in the upper portion of the valve body, an air discharging hole is formed in the valve cover, the valve cover and the valve body are fixed through threads, a sealing gasket is arranged at the bottom of the valve anvil, the valve anvil and the valve body are automatically closed or separated under the combined action of the elasticity of the spring and the gas pressure, and overpressure gas is automatically discharged. The safe gas discharging valve has the outstanding advantages of being simple in manufacturing process, automatic in pressure control, safe, reliable, low in cost and the like.

Description

A kind of gas safety dumping valve

Technical field

The utility model relates to a kind of gas safety dumping valve, belongs to chemical field.

Background technique

Flow battery is that a kind of new electric energy stores and efficient reforming unit, have characteristics such as scale is big, the life-span long, the low nontoxic environmental friendliness of cost, be suitable in occasions such as the non-wind-power electricity generation that is incorporated into the power networks, solar electrical energy generation, storing and efficient converting apparatus use as large-scale electric energy.

Different with common all-vanadium flow battery, Chinese invention patent (publication number CN101127393A) has proposed a kind of novel zinc-nickel single flow battery, it is anodal that this battery adopts sintrered nickel, deposition zinc is negative pole, the alkaline solution that contains zinc is single electrolytic solution, do not have barrier film between the electrode, have that manufacturing process is simple, cost is low, the cycle life advantages of higher.Zinc-nickel single flow battery system is made up of pile, liquid container, liquid pump and connecting tube usually, by liquid pump electrolytic solution is circulated between liquid container and pile.During operation, the entire cell system can not be opened wide, simultaneously again can not complete closed.If battery system opens wide, water evaporation causes electrolyte solution loss; If complete closed, then the battery system internal pressure will be higher than outside atmosphere body pressure, be in the superpressure state.A battery system internal pressure part is from the circulating pressure of liquid pump and the saturation vapour pressure of electrolytic solution, and this part gas pressure remains unchanged substantially; Another part gas pressure is from the micro-hydrogen of separating out in the charge and discharge process and the accumulation of oxygen, and there is potential safety hazard in this part gas pressure along with the long-time running meeting of battery constantly increases.

As seen, need an easy gas safety dumping valve on the battery system housing, this valve is in air-tight state at ordinary times, prevent the evaporation of electrolytic solution, and when inside battery because the accumulation of hydrogen and oxygen makes pressure exceed one when delimiting, valve is opened the discharging over-pressure gas automatically, then continues to keep air-tight state.

Summary of the invention

The purpose of this utility model provides a kind of simple in structure, automatic pressure-controlled, method and apparatus of ensureing gas pressure safety for enclosed systems such as zinc-nickel single flow battery housings.

Valve of the present utility model comprises valve body 1, valve gap 2, spring 3 and valve anvil 4; Valve gap 2 links to each other by spring 3 with valve anvil 4, and the three all is positioned at the cavity 5 on valve body 1 top; Valve body 1 comprises upper chamber 5 and bottom vent 7 two-part; Cavity 5 apertures are greater than vent 7 apertures, and there is screw thread cavity 5 inside, are used for fixing and adjusting valve gap 2 positions; Relieving stagnant Qi bubble groove 8 is arranged at vent 7 bottoms, prevents the generation of vent 7 place's bubbles, guarantees that gas circuit is unimpeded; There is the exhaust port of getting through up and down 9 valve gap 2 inside, are used for the discharging over-pressure gas; Be threaded around the valve gap 2, be fixed in the valve body 1 by screw thread; Valve gap 2 bottoms have projection to be used for fixing spring 3, and top has degree of tightness groove 10 to be convenient to screw-driver insertion adjusting valve gap 2 positions; Valve anvil 4 tops have projection to be used for fixing spring 3, and seal washer 6 is arranged at the bottom, with the sealing of cavity 5 bottoms, the vent 7 of valve body 1 bottom and cavity 5 are separated under spring 3 effects; Spring 3 tops link to each other with the bottom protrusion of valve gap 2, and the bottom links to each other with the top bump of valve anvil 4; Spring 3 is in compressive state usually, requires to select the spring 3 of different elastic force according to different safe exhaust pressure; Regulate the safety dumping pressure that the upper-lower position of valve gap 2 in cavity 5 also will change valve.

Valve body 1 of the present utility model is installed to the top of the flow battery housing that assembles in advance, uses funnel to be injected the electrolytic solution of standard volume by the cavity 5 in the valve body 1 and vent 7; The bottom protrusion of valve gap 2 is linked to each other with spring 3 tops, and the top bump of valve anvil 4 links to each other with spring 3 bottoms, puts into valve body 1 upper chamber 5 after connection is finished, and uses straight screwdriver to insert in the degree of tightness groove 10, the position of rotating regulation valve lid 2 in cavity 5; At this moment, under spring 3 effects, the seal washer 6 of valve anvil 4 bottoms and the sealing of cavity 5 bottoms are separated the vent 7 of valve body 1 bottom and cavity 5, and flow battery system integral body is in complete air-tight state; After the long-time running, hydrogen and the oxygen of separating out in the charge and discharge process constantly accumulate, the inside battery gas pressure constantly raises, to delimit be when gas pressure is greater than valve body 5 gas pressures and spring 3 elastic force sums in the vent 7 when internal gas pressure exceeds one, spring 3 is compressed, its bottom seal washer 6 separates with cavity 5 bottoms, vent 7 is communicated with gas in the cavity 5, valve is opened the discharging over-pressure gas automatically, then the inside battery gas pressure descends, and spring 3 elongations seal the seal washer 6 of valve anvil 4 bottoms and cavity 5 bottoms, the vent 7 of valve body 1 bottom is separated with cavity 5, made the flow battery system get back to complete air-tight state.

The utility model structure is very simple, can satisfy the seal request of enclosed system, automatic discharge function when having realized simultaneously gas superpressure in the system again, guarantee system gas inside pressure security has that manufacturing process is simple, automatic pressure-controlled, safe and reliable, low cost and other advantages.

Description of drawings

Fig. 1 is the structural representation of gas safety dumping valve

Among the figure: 1. valve body, 2. valve gap, 3. spring, 4. valve anvil, 5. cavity, 6. seal washer, 7. vent, 8. relieving stagnant Qi bubble groove, 9. exhaust port, 10. degree of tightness groove.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing:

The utility model is made up of valve body 1, valve gap 2, spring 3 and valve anvil 4 four parts; Valve body 1 comprises upper chamber 5 and bottom vent 7 two-part; Valve gap 2 links to each other by spring 3 with valve anvil 4, and the three all was positioned at the cavity 5 on valve body 1 top after connection was finished; Valve gap 2 and valve body 1 are fixed by screw thread; Seal washer 6 is arranged at valve anvil 4 bottoms, and the bottom with valve body 1 upper chamber 5 under the effect of spring 3 seals, and makes the vent 7 and cavity 5 interior gas partitions of valve body 1 bottom.

During concrete enforcement, select the spring 3 of suitable elastic force, after the utility model assembling is finished, attach it to the top of flow battery housing, valve body 1 carries out the glue envelope with battery container.At this moment, the elastic force of spring 3 is greater than the gas pressure difference inside and outside the battery container, and valve anvil 4 seals with the bottom of cavity 5, and flow battery system integral body is in complete air-tight state; After the long-time running, hydrogen and the oxygen of separating out in the charge and discharge process constantly accumulate, the inside battery gas pressure constantly raises, when the gas pressure difference inside and outside the battery container during greater than the elastic force of spring 3, spring 3 is compressed, and valve anvil 4 separates with the bottom of cavity 5, and vent 7 is communicated with gas in the cavity 5, gas enters in the cavity 5 in the battery container, passes through valve again Lid 2In exhaust port 9 discharge, then the inside battery gas pressure descends, spring 3 elongations, make the seal washer 6 and the sealing of cavity 5 bottoms of valve anvil 4 bottoms, the vent 7 of valve body 1 bottom is separated with cavity 5, make the flow battery system get back to complete air-tight state, thereby realized the automatic control of enclosed system internal gas pressures such as flow battery housing, ensure the gas pressure safety of enclosed system.

Claims

1. a gas safety dumping valve is characterized in that this valve comprises valve body (1), valve gap (2), spring (3) and valve anvil (4); Valve gap (2) links to each other by spring (3) with valve anvil (4), and the three all is positioned at the cavity (5) on valve body (1) top; Valve body (1) comprises upper chamber (5) and bottom vent (7) two-part; Cavity (5) aperture is greater than vent (7) aperture, and there is screw thread cavity (5) inside, is used for fixing and adjusting valve gap (2) position; Relieving stagnant Qi bubble groove (8) is arranged at vent (7) bottom, prevents that vent (7) from locating the generation of bubble, guarantees that gas circuit is unimpeded; There is the exhaust port of getting through up and down (9) valve gap (2) inside, is used for the discharging over-pressure gas; Valve gap (2) is threaded all around, is fixed in the valve body (1) by screw thread; Valve gap (2) bottom has projection to be used for fixing spring (3), and top has degree of tightness groove (10) to be convenient to screw-driver insertion adjusting valve gap (2) position; Valve anvil (4) top has projection to be used for fixing spring (3), and seal washer (6) is arranged at the bottom, with the sealing of cavity (5) bottom, the vent (7) of valve body (1) bottom and cavity (5) is separated under spring (3) effect; Spring (3) top links to each other with the bottom protrusion of valve gap (2), and the bottom links to each other with the top bump of valve anvil (4); Spring (3) is in compressive state usually, requires to select the spring (3) of different elastic force according to different safe exhaust pressure; Regulate the safety dumping pressure that the upper-lower position of valve gap (2) in cavity (5) also will change valve.