CN1172100C

CN1172100C - Nested valve for high-pressure pipeline and container

Info

Publication number: CN1172100C
Application number: CNB021334951A
Authority: CN
Inventors: 剑张; 张剑
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-20
Filing date: 2002-07-20
Publication date: 2004-10-20
Anticipated expiration: 2022-07-20
Also published as: CN1391047A

Abstract

The present invention relates to a nested valve for high-pressure pipelines and high-pressure containers. The technology is characterized in that a valve body is a nested structure; an outer-layer control rod can move in a valve base; an inner-layer control rod is arranged in the outer-layer control rod; the inner-layer control rod can move in the outer-layer control rod; gas in the pipelines or the containers can flow out from the inner-layer control rod; a main return spring is arranged between the outer-layer control rod and the valve base; a spring base is arranged under the outer-layer control rod; an auxiliary spring base is arranged between the inner-layer control rod and the spring base; the inner-layer control rod is driven to move by a push rod; a block is arranged on the inner-layer control rod. The valve of the present invention presents threads from being connected with the liquid and gas so that the corrosive liquid and gas can not erode the threads, and thus, prevents the valve from being screwed forever. In addition, the inner-layer control rod is partially opened under the condition that small air pressure acts on the inner-layer control rod so that the gas flows out; the difference existing between both ends of the valve body is reduced; thus, the outer-layer control rod is easily opened; the high-pressure valve is easily opened.

Description

A kind of nested valve that is applicable in high pressure pipe line and the high-pressure bottle

Technical field

The present invention relates to a kind of nested valve that is applicable in high pressure pipe line and the high-pressure bottle.

Background technique

In chemical industry and other industry, exist many high pressure pipe lines and high-pressure bottle, in these pipelines and container, all be provided with valve, the valve of present stage generally all is gate valve or ball valve, these valves have the following disadvantages in actual applications: the one, and the screw thread of liquid, gas channel and valve body links to each other, and corrosive liquid, gas can corrode screw thread, make valve to operate, form dead valve, stay potential safety hazard; The 2nd, when the pressure in pipeline and the container is higher, can increase the dynamics of valve opening, when reality was used, this dynamics had often surpassed the scope of manpower, and has to use special tool, and this has just caused inconvenience.

Summary of the invention

The purpose of this invention is to provide a kind of nested valve that is applicable in high pressure pipe line and the high-pressure bottle, the control screw thread discord liquid of this valve, gas contact, the formation of fundamentally having stopped dead valve; And unlatching that can be light.

The object of the present invention is achieved like this: a kind of nested valve that is applicable in high pressure pipe line and the high-pressure bottle, comprise operating device and valve body, the operating device center is a catch bar, catch bar is threadedly connected to spiral cover outward, catch bar can move up and down under the effect of the rotation screw thread of spiral cover, it is characterized in that: valve body is a nested structure, and outer controlling rod can move in valve seat, thereby reaches the function of sealing and conducting; In the outer controlling rod internal layer controlling rod is arranged, the internal layer controlling rod can move in outer controlling rod, and the gas in pipeline or the container can be overflowed in the internal layer controlling rod; There is the plug that seals internal layer controlling rod and outer controlling rod rear end; Between outer controlling rod and the valve seat master reset spring is arranged; Under the outer controlling rod spring seat is arranged, secondary Returnning spring is arranged between internal layer controlling rod and the spring seat; The internal layer controlling rod moves under the driving of catch bar, on the internal layer controlling rod block is arranged, and after the internal layer controlling rod moved to certain position, block can be put forth effort on outer controlling rod.

Described a kind of nested valve that is applicable in high pressure pipe line and the high-pressure bottle is characterized in that: when the moving direction of catch bar was consistent with controlling rod moving direction, catch bar directly acted on the internal layer controlling rod; When the moving direction of catch bar was vertical with controlling rod moving direction, catch bar acted on the internal layer controlling rod by the angle voussoir.

The beneficial effect of valve provided by the invention is: control screw thread discord liquid, gas contact, and corrosive liquid, gas can not corrode screw thread, thus to have avoided be the generation of dead valve; And, gas is overflowed because the internal layer controlling rod is opened in the situation bottom that is subjected to less air pressure, and the draught head at valve body two ends is reduced, thereby can easier open outer controlling rod, reach the purpose of complete opening valve.

Below in conjunction with accompanying drawing, the present invention is further described by embodiment:

Description of drawings

Fig. 1 is the structural representation of the embodiment of the invention 1;

Fig. 2 is the A-A view of Fig. 1;

Fig. 3 is the B-B view of Fig. 1;

Fig. 4 is the structural representation of the embodiment of the invention 2;

Fig. 5 is the C-C view of Fig. 4.

Embodiment

Embodiment 1:

A kind of nested valve that is applicable in high pressure pipe line and the high-pressure bottle, comprise operating device 1 and valve body 2, operating device 1 center is a catch bar 3, the catch bar 3 outer spiral covers 4 that are threadedly connected to, catch bar 3 can move up and down under the effect of the rotation screw thread of spiral cover 4, valve body 2 is a nested structure, and outer controlling rod 5 can move in valve seat 6, thereby reaches the function of sealing and conducting; In the outer controlling rod 5 internal layer controlling rod 7 is arranged, internal layer controlling rod 7 can move in outer controlling rod 5, and the gas in pipeline or the container can be overflowed in internal layer controlling rod 7; There is the plug 13 that seals internal layer controlling rod and outer controlling rod rear end; Between outer controlling rod 5 and the valve seat 6 master reset spring 8 is arranged; Outer controlling rod has spring seat 95 times, and secondary Returnning spring 10 is arranged between internal layer controlling rod 7 and the spring seat 9; Internal layer controlling rod 7 moves under the driving of catch bar 3, and block 11 is arranged on the internal layer controlling rod 7, and after internal layer controlling rod 7 moved to certain position, block 11 can be put forth effort on outer controlling rod 5.

At ordinary times, pipeline and container are normally off, when needs are opened, rotation spiral cover 4, the screw thread of spiral cover 4 moves down catch bar 3, catch bar 3 is made power in internal layer controlling rod 7, so can overcoming secondary Returnning spring 10, internal layer controlling rod 7 moves down, in moving process, and the seal failure of internal layer controlling rod 7 lower ends, gas escapes into the valve body upper end by the passage 12 of internal layer controlling rod 7, and the draught head at valve body two ends is reduced.

Because block 11 and internal layer controlling rod 7 are synchronized with the movement, when internal layer controlling rod 7 is moved down into to a certain degree, block 11 can be made power in outer controlling rod 5, outer controlling rod 5 can overcome master reset spring 8 and move down, though the area under the outer controlling rod 5 is bigger, institute's gas pressure that bears is also bigger, because draught head reduces, so it is also lighter that outer controlling rod 5 moves, this also is a purpose of the present invention.After outer controlling rod 5 moves, the seal failure of lower end, a large amount of gases are overflowed, and this has just finished the working procedure of Open valve.

When the needs throttle down, counterrotating spiral cover 4, catch bar 3 moves up under threaded function, and outer controlling rod 5 and internal layer controlling rod 7 move under the effect of master reset spring 8 and secondary Returnning spring 10, make sealing come into force, and have just reached the purpose of closing.

Embodiment 2:

Because the mounting point of valve will be limited by actual conditions, sometimes need be on straight-run of pipe mounted valve, the moving direction of catch bar 3 is just no longer consistent with the moving direction of controlling rod so, but vertical relation, so the transmission that must exert all one's strength changes direction, in the present embodiment, is provided with angle voussoir 14 in catch bar 3 lower ends, the front end of internal layer controlling rod 7 is stuck in the angle, and moving up and down and move left and right along with voussoir 14.

Other function modes of present embodiment are all identical with embodiment 1.

Claims

1, a kind of nested valve that is applicable in high pressure pipe line and the high-pressure bottle, comprise operating device and valve body, the operating device center is a catch bar, catch bar is threadedly connected to spiral cover outward, catch bar can move up and down under the effect of the rotation screw thread of spiral cover, it is characterized in that: valve body is a nested structure, and outer controlling rod can move in valve seat, thereby reaches the function of sealing and conducting; In the outer controlling rod internal layer controlling rod is arranged, the internal layer controlling rod can move in outer controlling rod, and the gas in pipeline or the container can be overflowed from the passage of internal layer controlling rod; There is the plug that seals internal layer controlling rod and outer controlling rod rear end; Between outer controlling rod and the valve seat master reset spring is arranged; Under the outer controlling rod spring seat is arranged, secondary Returnning spring is arranged between internal layer controlling rod and the spring seat; The internal layer controlling rod moves under the driving of catch bar, on the internal layer controlling rod block is arranged, and after the internal layer controlling rod moved to certain position, block can be put forth effort on outer controlling rod.

2, a kind of nested valve that is applicable in high pressure pipe line and the high-pressure bottle as claimed in claim 1 is characterized in that: when the moving direction of catch bar was consistent with controlling rod moving direction, catch bar directly acted on the internal layer controlling rod; Be provided with the angle voussoir in the catch bar lower end, the front end of internal layer controlling rod is stuck in the angle, and when the moving direction of catch bar was vertical with controlling rod moving direction, catch bar acted on the internal layer controlling rod by the angle voussoir.