CN111720563A - Pneumatic high-temperature pressure relief needle valve - Google Patents
Pneumatic high-temperature pressure relief needle valve Download PDFInfo
- Publication number
- CN111720563A CN111720563A CN202010736588.2A CN202010736588A CN111720563A CN 111720563 A CN111720563 A CN 111720563A CN 202010736588 A CN202010736588 A CN 202010736588A CN 111720563 A CN111720563 A CN 111720563A
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- China
- Prior art keywords
- valve
- shell
- supporting seat
- temperature pressure
- seat
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/30—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
- F16K1/301—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers only shut-off valves, i.e. valves without additional means
- F16K1/303—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers only shut-off valves, i.e. valves without additional means with a valve member, e.g. stem or shaft, passing through the seat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K49/00—Means in or on valves for heating or cooling
- F16K49/002—Electric heating means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Housings (AREA)
Abstract
The invention 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, wherein the valve seat is arranged on the shell; 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 invention mainly solves the problem of controlling the pressure in the reaction vessel in a high-temperature environment in the production process of the titanium sponge, the zirconium sponge and the hafnium sponge.
Description
Technical Field
The invention belongs to the technical field of industrial valves, and particularly relates to a pneumatic high-temperature pressure relief 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.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a pneumatic high-temperature pressure relief needle valve for solving the problem of controlling the pressure in a reaction container in a high-temperature environment.
In order to solve the technical problem, the technical scheme of the invention is as follows: 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 invention has the advantages that:
(1) the starting and stopping cylinder is adopted to drive the valve shaft to move, so that the valve shaft is contacted and separated with the position relation of the valve seat, reaction gas in the container enters the condenser, the function of controlling the internal pressure of the container is realized, the equipment is always kept at a high temperature of 500 ℃ in self-heating and reactor heating environments, the switching function is realized by adopting contact metal sealing between the valve shaft and the valve seat, and the problem that a common valve cannot realize a pressure relief adjusting function under a high-temperature working condition is solved;
(2) the protective gas sealing device is arranged, and the reaction atmosphere is prevented from overflowing the workshop environment to cause pollution by always flowing in small-flow protective gas;
(3) the invention is provided with the 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 the pressure relief channel.
Drawings
FIG. 1 is a schematic structural view of a pneumatic high-temperature pressure-relief needle valve according to 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 describes embodiments of the present invention with reference to examples:
it should be noted that the structures, proportions, sizes, and other elements shown in the specification are included for the purpose of understanding and reading only, and are not intended to limit the scope of the invention, which is defined by the claims, and any modifications of the structures, changes in the proportions and adjustments of the sizes, without affecting the efficacy and attainment of the same.
In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a 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.
While 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, but only by the scope of 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 |
|---|---|---|---|
| CN202010736588.2A CN111720563A (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 |
|---|---|---|---|
| CN202010736588.2A CN111720563A (en) | 2020-07-28 | 2020-07-28 | Pneumatic high-temperature pressure relief needle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111720563A true CN111720563A (en) | 2020-09-29 |
Family
ID=72573757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010736588.2A Pending CN111720563A (en) | 2020-07-28 | 2020-07-28 | Pneumatic high-temperature pressure relief needle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111720563A (en) |
-
2020
- 2020-07-28 CN CN202010736588.2A patent/CN111720563A/en active Pending
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