CN212273074U - Pneumatic high-temperature pressure relief needle valve - Google Patents
Pneumatic high-temperature pressure relief needle valve Download PDFInfo
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- CN212273074U CN212273074U CN202021517278.3U CN202021517278U CN212273074U CN 212273074 U CN212273074 U CN 212273074U CN 202021517278 U CN202021517278 U CN 202021517278U CN 212273074 U CN212273074 U CN 212273074U
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Abstract
The utility model discloses a pneumatic high-temperature pressure-relief needle valve, which comprises a shell, a valve seat, a cylinder supporting seat, a cylinder, a connecting sleeve, a valve shaft and a protective gas sealing device; one end of the shell is fixedly connected with the valve seat, the other end of the shell is fixedly connected with the air cylinder supporting seat, the air cylinder is installed at one end, far away from the shell, of the air cylinder supporting seat, one end of the connecting sleeve is connected with the air cylinder, the other end of the connecting sleeve extends into the air cylinder supporting seat and is connected with the valve shaft, and the other end of the valve shaft penetrates through the shell and the valve seat; the protective gas sealing device is sleeved outside the valve shaft and is arranged on the cylinder supporting seat. The utility model discloses mainly be in titanium sponge, zirconium, hafnium production process solve the control problem of reaction vessel internal pressure under the high temperature environment.
Description
Technical Field
The utility model belongs to the technical field of the industrial valve, especially, relate to a pneumatic high temperature pressure release needle valve.
Background
Titanium, zirconium and hafnium are important strategic materials, and the titanium alloy has the characteristics of low density, high specific strength, good corrosion resistance, low thermal conductivity, no toxicity, no magnetism, weldability, good biocompatibility, strong surface decoration property and the like, and is widely applied to the fields of aviation, aerospace, chemical industry, petroleum, electric power, medical treatment, buildings, sports goods and the like. The zirconium hafnium material is a core material in nuclear energy industry, is mainly used as a sheath material of nuclear fuel and a speed reduction and control material of a nuclear reactor, has increasing demand and considerable development prospect.
Current relief valve is mostly self-operated relief valve, and the effect through the diaphragm promotes the case through the rising of pipeline anterior segment pressure to play the effect of pressure release, close the case through compressing tightly of outside spring after pipeline anterior segment pressure reduces, in order to reach the purpose of pressure release.
From the foregoing, it can be seen that the prior needle valve suffers from several significant drawbacks:
1. the temperature resistance is low, and the working environment temperature is generally-20 to +55 ℃;
2. the valve is not provided with a heating device, and high-temperature reactants are easy to condense to block a reaction channel when passing through the valve.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art not enough, provide a pneumatic high temperature pressure release needle valve of the control problem of reaction vessel internal pressure under the solution high temperature environment.
In order to solve the technical problem, the technical scheme of the utility model is that: a pneumatic high-temperature pressure-relief needle valve comprises a shell, a valve seat, a cylinder supporting seat, a cylinder, a connecting sleeve, a valve shaft and a protective gas sealing device;
one end of the shell is fixedly connected with the valve seat, the other end of the shell is fixedly connected with the air cylinder supporting seat, the air cylinder is installed at one end, far away from the shell, of the air cylinder supporting seat, one end of the connecting sleeve is connected with the air cylinder, the other end of the connecting sleeve extends into the air cylinder supporting seat and is connected with the valve shaft, and the other end of the valve shaft penetrates through the shell and the valve seat;
the protective gas sealing device is sleeved outside the valve shaft and is arranged on the cylinder supporting seat.
Preferably, the protective gas sealing device comprises a gas inlet pipe and a sealing chamber, and the sealing chamber is sleeved on the valve shaft and is in sealing connection with the inner wall of the cylinder supporting seat.
Preferably, the cylinder support seat further comprises a connecting bolt, and the connecting bolt connects the cylinder and the cylinder support seat into a whole.
Preferably, the electric heating device further comprises a resistance heater mounted on the housing.
Preferably, the valve shaft is threadedly coupled to the valve seat.
Preferably, the shell is provided with a collecting branch pipe.
Preferably, the gas inlet pipe is externally connected with protective gas.
Preferably, the pneumatic high-temperature pressure relief needle valve is made of heat-resistant steel.
Compared with the prior art, the utility model has the advantages of:
(1) the utility model adopts the starting and stopping cylinder to drive the valve shaft to move, so that the valve shaft is contacted and separated with the position relation of the valve seat, and the reaction gas in the container enters the condenser, thereby realizing the function of controlling the internal pressure of the container, the equipment always keeps 500 ℃ high temperature in the self-heating and reactor heating environment, the contact metal seal between the valve shaft and the valve seat is adopted to realize the switch function, and the problem that the common valve can not realize the pressure relief adjusting function under the high-temperature working condition is solved;
(2) the utility model is provided with the protective gas sealing device, and prevents the reaction atmosphere from overflowing the workshop environment to cause pollution by flowing small flow of protective gas all the time;
(3) the utility model discloses set up resistance heater, make valve temperature guarantee above technology reaction temperature, prevent that the material condensation from blockking up the pressure release passageway.
Drawings
FIG. 1 is a schematic structural view of a pneumatic high-temperature pressure-relief needle valve of the present invention;
description of reference numerals:
1. a housing;
2. a valve seat;
3. a cylinder supporting seat;
4. a cylinder;
5. connecting sleeves;
6. a valve shaft;
7. a protective gas sealing device 7-1, an air inlet pipe 7-2 and a sealing chamber;
8. a connecting bolt;
9. collecting branch pipes;
10. a furnace cover.
Detailed Description
The following description of the embodiments of the present invention is provided in connection with the following embodiments:
it should be noted that the structures, ratios, sizes, etc. illustrated in the present specification are only used to cooperate with the contents disclosed in the specification for the understanding and reading of the people skilled in the art, and are not used to limit the limit conditions that the present invention can be implemented, and any modifications of the structures, changes of the ratio relationships or adjustments of the sizes should still fall within the scope that the technical contents disclosed in the present invention can cover without affecting the functions and the achievable purposes of the present invention.
Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
As shown in fig. 1, a pneumatic high-temperature pressure-relief needle valve comprises a housing 1, a valve seat 2, a cylinder support seat 3, a cylinder 4, a connecting sleeve 5, a valve shaft 6 and a protective gas sealing device 7;
one end of the shell 1 is fixedly connected with the valve seat 2, the other end of the shell is fixedly connected with the cylinder supporting seat 3, the cylinder 4 is installed at one end, far away from the shell 1, of the cylinder supporting seat 3, one end of the connecting sleeve 5 is connected with the cylinder 4, the other end of the connecting sleeve extends into the cylinder supporting seat 3 and is connected with the valve shaft 6, and the other end of the valve shaft 6 penetrates through the shell 1 and the valve seat 2; the valve seat 2 is welded on the furnace cover 10, and the cylinder 4 is started to drive the valve shaft 6 to lift, thereby changing the contact relation between the valve shaft 6 and the valve seat 2 and further controlling the internal pressure of the container.
The protective gas sealing device 7 is sleeved outside the valve shaft 6 and is arranged on the cylinder supporting seat 3.
Specifically, the protective gas sealing device 7 comprises a gas inlet pipe 7-1 and a sealing chamber 7-2, wherein the sealing chamber 7-2 is sleeved on the valve shaft 6 and is connected with the inner wall of the cylinder supporting seat 3 in a sealing mode.
Specifically, the cylinder support device further comprises a connecting bolt 8, and the connecting bolt 8 is used for connecting the cylinder 4 and the cylinder support seat 3 into a whole.
Specifically, a resistance heater mounted on the housing 1 is also included. The valve shell is provided with a resistance heater, so that the temperature of the valve is ensured to be higher than the process reaction temperature, and the material is prevented from being condensed to block a reaction channel.
Specifically, the valve shaft 6 is screwed with the valve seat 2.
In particular, the housing 1 is provided with a collecting branch 9.
Specifically, the gas inlet pipe 7-1 is externally connected with protective gas.
Specifically, the pneumatic high-temperature pressure relief needle valve is made of heat-resistant steel. The whole needle valve is made of heat-resistant steel and has no other rubber sealing device, and the maximum use temperature can reach 800 ℃.
Firstly, sealing and welding a shell 1 and a valve seat 2, then sealing and welding a cylinder supporting seat 3 and the shell 1, then installing a protective gas sealing device 7 at the bottom of the cylinder supporting seat 3, then connecting a valve shaft 6 and a cylinder 4 into a whole through a connecting sleeve 5, and then connecting and installing the assembled cylinder valve shaft 6 to the cylinder supporting seat 3 through a connecting bolt 8 to complete the integral installation; finally, the assembled pneumatic needle valve is welded on the interface of the reaction vessel, and the needle valve shell comprises a resistance heater, so that the valve keeps a certain process temperature in the use process, and the condensation of reaction materials is prevented. The protective gas sealing device 7 is always filled with small-flow protective gas, so that the reaction atmosphere is prevented from overflowing from the workshop environment to cause pollution.
The working principle is as follows:
the needle valve has the main action relationship that the starting and stopping cylinder 4 drives the valve shaft 6 to move, and the valve shaft 6 is contacted and separated with the valve seat 2 after descending or lifting, so that whether reaction gas in the container enters the condenser or not is controlled, and the function of controlling the internal pressure of the container is further realized.
In conclusion, the needle valve provides a problem that the pressure in the reactor can be conveniently and rapidly controlled by high-temperature reactants in a high-temperature environment through the valve.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, and that the scope of the invention is defined by the appended claims.
Claims (8)
1. The utility model provides a pneumatic high temperature pressure release needle valve which characterized in that: comprises a shell, a valve seat, a cylinder supporting seat, a cylinder, a connecting sleeve, a valve shaft and a protective gas sealing device;
one end of the shell is fixedly connected with the valve seat, the other end of the shell is fixedly connected with the air cylinder supporting seat, the air cylinder is installed at one end, far away from the shell, of the air cylinder supporting seat, one end of the connecting sleeve is connected with the air cylinder, the other end of the connecting sleeve extends into the air cylinder supporting seat and is connected with the valve shaft, and the other end of the valve shaft penetrates through the shell and the valve seat;
the protective gas sealing device is sleeved outside the valve shaft and is arranged on the cylinder supporting seat.
2. A pneumatic high temperature pressure relief needle valve as defined in claim 1, wherein: the protective gas sealing device comprises a gas inlet pipe and a sealing chamber, wherein the sealing chamber is sleeved on the valve shaft and is connected with the inner wall of the cylinder supporting seat in a sealing mode.
3. A pneumatic high temperature pressure relief needle valve as defined in claim 2, wherein: the cylinder is connected with the cylinder supporting seat into a whole through the connecting bolt.
4. A pneumatic high temperature pressure relief needle valve as defined in claim 3 wherein: also included is a resistive heater mounted on the housing.
5. A pneumatic high temperature pressure relief needle valve as defined in claim 1, wherein: the center of the valve seat is provided with an opening, and one end of the valve shaft, which is far away from the connecting sleeve, extends into the opening to be connected with the valve seat in a sliding manner.
6. A pneumatic high temperature pressure relief needle valve as defined in claim 1, wherein: and a collecting branch pipe is arranged on the shell.
7. The pneumatic high-temperature pressure relief needle valve according to claim 2, wherein the gas inlet pipe is externally connected with a protective gas.
8. A pneumatic high temperature pressure relief needle valve as claimed in any one of claims 1 to 7, wherein the material used for the pneumatic high temperature pressure relief needle valve is heat resistant steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021517278.3U CN212273074U (en) | 2020-07-28 | 2020-07-28 | Pneumatic high-temperature pressure relief needle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021517278.3U CN212273074U (en) | 2020-07-28 | 2020-07-28 | Pneumatic high-temperature pressure relief needle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212273074U true CN212273074U (en) | 2021-01-01 |
Family
ID=73899161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021517278.3U Active CN212273074U (en) | 2020-07-28 | 2020-07-28 | Pneumatic high-temperature pressure relief needle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212273074U (en) |
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2020
- 2020-07-28 CN CN202021517278.3U patent/CN212273074U/en active Active
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