CN111853299A - Built-in valve - Google Patents

Built-in valve Download PDF

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Publication number
CN111853299A
CN111853299A CN202010769623.0A CN202010769623A CN111853299A CN 111853299 A CN111853299 A CN 111853299A CN 202010769623 A CN202010769623 A CN 202010769623A CN 111853299 A CN111853299 A CN 111853299A
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CN
China
Prior art keywords
valve
valve core
core pipe
wall
annular
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Pending
Application number
CN202010769623.0A
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Chinese (zh)
Inventor
卢星霖
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Individual
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Individual
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Priority to CN202010769623.0A priority Critical patent/CN111853299A/en
Publication of CN111853299A publication Critical patent/CN111853299A/en
Pending legal-status Critical Current

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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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0446—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with an obturating member having at least a component of their opening and closing motion not perpendicular to the closing faces
    • F16K17/046—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with an obturating member having at least a component of their opening and closing motion not perpendicular to the closing faces the valve being of the gate valve type or the sliding valve type
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/048—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded combined with other safety valves, or with pressure control devices
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0486—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with mechanical actuating means
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/168—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety valve
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/40—Safety valves; Equalising valves, e.g. pressure relief valves with a fracturing member, e.g. fracturing diaphragm, glass, fusible joint
    • F16K17/403—Safety valves; Equalising valves, e.g. pressure relief valves with a fracturing member, e.g. fracturing diaphragm, glass, fusible joint with a fracturing valve member

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The built-in valve is a pioneering invention, belonging to the field of valves and relating to a supplementary pressure increasing valve, a safety valve, a pressure opening and closing valve, a check valve and the like; the outer end of the valve core pipe is fixedly connected with the bottom of the container wall, the inner end of the valve core pipe extends into the container, a radial necking or bottom is arranged at the inner end of the valve core pipe, and at least two radial flow holes are formed in the annular wall of the valve core pipe; the opening and closing piece is embedded into the inner cavity of the valve core tube and axially slides in the inner cavity of the valve core tube, and the outer end of the valve core tube is also connected with a valve cover or a pipe joint; the annular sealing end surface of the opening and closing piece and the corresponding valve seat A and/or valve seat B form a sealing pair, the valve seat A is tightly attached to the annular table of the inner wall of the valve core pipe and is tightly connected with the annular inner wall of the valve core pipe, and the valve seat B is the end head of the inner end of the pipe joint; if the valve is applied to the liquefied gas tank wagon tank, double-layer sealing is realized in the transportation process, and the valve cover cannot be impacted even if the vehicle is turned over, so that the safety of the valve is ensured; the heat insulation material is applied to LNG ship tanks and storage tanks of liquefied gas stations, is not easy to be impacted and is convenient to preserve heat; the cost performance is high, and reliability, security are strong, and zero leaks, long-life, the maintenance of being convenient for.

Description

Built-in valve
Technical Field
The built-in valve is designed according to the existing problems and belongs to the development of the field of valves; the main body of the built-in valve extends into the container and is connected with the wall of the container, and the inner cavity of the container is the inner cavity of the valve body and forms a whole with the container; the vessel may be a tanker tank, a train tank, an LNG ship tank, a liquefied gas station storage tank, an oil tank, a compressor station storage tank, a boiler tank, a rocket liquid fuel tank, a power plant oil tank, a water tower, a water tank, any media transport pipe network, or the like; the built-in valve relates to a supplementary pressure increasing valve, a safety valve, a pressure opening and closing valve, a check valve and the like.
The built-in valve is used as a supplementary pressure increasing valve, is placed at the lower part or the bottom of the container and is used as a medium input valve, when the end surfaces of the two ends of the opening and closing piece are subjected to the consistent medium input pressure and the pressure of the inner cavity of the container, the valve is automatically closed under the action of the elastic force of the spring, and the harm caused by excessive input is avoided; the pipeline and the valve are prevented from being arranged on the upper part of the existing container, meanwhile, a ball float valve is avoided, and a plurality of inconveniences and potential safety hazards caused by the fact that the valve is arranged on the top of the tank are avoided; the automatic input-prevention valve is applied to a liquefied gas tank truck, excessive input can be automatically prevented in the input process in three stages of input, transportation and output, a valve cover is additionally arranged in the transportation process, namely double-layer sealing is realized, namely a sealing pair and the valve cover are sealed, and the valve cover cannot be impacted even if a truck is turned over, so that the safety of the valve is ensured; it is applied to LNG ship tank, liquefied gas station holding vessel, can not bumped, also is convenient for keep warm.
The built-in valve is used as a safety valve, is applied to a liquefied gas tank truck tank and is hidden in the tank, so that the safety valve cannot be impacted even if the tank truck is turned over, the safety valve is ensured not to be leaked, and meanwhile, an overpressure medium can be discharged under the overpressure condition, so that accidents are avoided.
The built-in valve is convenient to maintain, and can be maintained, repaired or replaced for sealing, and adjusted or replaced for springs outside the container.
Background
So far, no valve is installed in the inner cavity of the container, and the application is blank.
The leakage and explosion of chemical media caused by the turnover of the tank car and the impact of a valve are very alarming every year. 20 people die and 24 people seriously hurt and 172 people are hospitalized due to the explosion accident of 13 Zhejiang greenling tank cars in 6 months in 2020, and meanwhile, houses, vehicles and facilities adjacent to roads are damaged; the primary understanding is that the speed is too high when an accident vehicle enters a ramp, the vehicle is out of control, a valve box is seriously impacted by side, liquefied gas is leaked, and the accident vehicle is ignited and exploded. By 2018, the total number of the Chinese tank cars reaches 37.3 thousands, the number of the employees is 160 thousands, the safety conditions of the tank cars need to be thoroughly changed, and the life and property safety of people needs to be guaranteed. Safety issues in tanker tanks, train tanks, LNG ship tanks, liquefied gas station storage tanks, oil tanks in oil field oil depots, compressor station storage tanks, boilers, etc. all need to be addressed. The present invention seeks to alter this situation and enhance security.
Disclosure of Invention
The invention aims to provide a built-in valve, which enhances safety and sealing performance.
The built-in valve is technically characterized in that: the upper end of the valve core tube, which is vertical to the ground and radially expanded, is fixedly connected with the top of the container wall or a reinforcing plate connected with the top of the container wall, and the lower end of the valve core tube extends into the container; the upper bottom of the cup-shaped opening and closing piece is provided with a radially expanded platform, the annular lower end surface of the radially expanded platform is a sealing end surface, the shoulder part of the valve core pipe is a valve seat, and the sealing end surface and the corresponding valve seat form a sealing pair; the lower half part of the opening and closing piece penetrates through the valve core pipe and extends into the container, and the annular wall of the opening and closing piece is provided with at least two radial circulation holes; a ring platform is sleeved on the outer wall of the tail end of the opening and closing piece crossing the bottom end of the valve core pipe, and a compression spring wrapping the outer wall of the opening and closing piece is arranged between the ring platform and the corresponding bottom end of the valve core pipe; the inner cavity of the opening and closing piece is a flow passage, and overpressure medium is discharged to the atmosphere environment or a special pipeline from the flow hole.
The technical characteristics of the built-in valve can also be as follows: the lower end of the valve core pipe, which is vertical to the ground and radially expanded, is fixedly connected with the bottom of the container wall, and the upper end of the valve core pipe extends into the container; the weight type opening and closing piece is embedded into the inner cavity of the valve core pipe and axially slides in the inner cavity of the valve core pipe, and the lower end of the valve core pipe is connected with a valve cover or a pipe joint; the annular sealing end surface of the opening and closing piece and the corresponding valve seat A and/or valve seat B form a sealing pair, the valve seat A is tightly attached to the step of the inner wall of the valve core pipe and is tightly connected with the annular inner wall of the valve core pipe, and the valve seat B is the end head of the upper end of the pipe joint; the inner cavity of the pipe joint is a flow passage, and the medium enters and exits the container from the flow hole.
The technical characteristics of the built-in valve can also be as follows: the outer end of the valve core pipe which is radially expanded is fixedly connected with the container wall, the inner end of the valve core pipe extends into the container, the inner end of the valve core pipe is provided with a radial necking or bottom, the annular wall of the valve core pipe is provided with at least two radial circulation holes, and the outer end of the valve core pipe is connected with a valve cover or a pipe joint; the annular sealing end surface of the cup-shaped opening and closing piece and the corresponding valve seat A and/or valve seat B form a sealing pair, the valve seat A is tightly attached to the step of the inner wall of the valve core pipe and is tightly connected with the annular inner wall of the valve core pipe, and the valve seat B is the end head of the inner end of the pipe joint; the opening and closing part is buckled with the inner cavity of the valve core pipe to form a cabin or is connected with the valve core pipe by a bellows sealing piece to form a closed cabin, and a compression spring is axially arranged in the cabin or dry compressed air is injected into the cabin; the inner cavity of the pipe joint is a flow passage, and the medium enters and exits the container from the flow hole.
The difference from the technical characteristics is that the pipe joint is of an angle type, a downward flow channel and the axial lead of the valve core pipe form an angle of 90 degrees, the middle part of the opening and closing part is fixedly connected with the inner end of the valve rod, the outer end of the valve rod axially penetrates through the corrugated pipe sealing part and the end part of the pipe joint from inside to outside, and one end of the corrugated pipe sealing part is connected with the valve rod while the other end is connected with the end part of the pipe joint.
Similarly, the difference from the technical characteristics is that the pipe joint is of an angle type, a downward flow channel and the axial lead of the valve core pipe form an angle of 90 degrees, the middle part of the opening and closing part is fixedly connected with the inner end of the valve rod, the outer end of the valve rod axially penetrates through the corrugated pipe sealing part, the end part of the pipe joint, the compression spring and the ring platform, the middle part of the ring platform is fixedly connected with the tail end of the valve rod, and one end of the corrugated pipe sealing part is connected with the valve rod while the other.
The technical characteristics of the built-in valve can also be as follows: the outer end of the valve core pipe which is radially expanded is fixedly connected with the container wall, the inner end of the valve core pipe extends into the container, the inner end of the valve core pipe is provided with a radial necking or bottom, the annular wall of the valve core pipe is provided with at least two radial circulation holes, and the outer end of the valve core pipe is connected with a valve cover or a pipe joint; the cup-shaped opening and closing piece is coaxially embedded into the inner cavity of the valve core pipe, the middle part of the opening and closing piece is fixedly connected with one end of the valve rod, the other end of the valve rod axially penetrates through the valve seat disc and the tail end of the compression spring to be fixedly connected with the annular table, the valve seat disc is tightly attached to the step on the inner wall of the valve core pipe and is tightly connected with the inner wall of the valve core pipe, and the annular sealing end surface of the opening and closing piece and the corresponding valve seat; the inner cavity of the pipe joint is a flow passage, and the medium enters and exits the container from the flow hole.
The technical characteristics of the built-in valve can also be as follows: the outer end of the valve core pipe which is radially expanded is fixedly connected with the container wall, the inner end of the valve core pipe extends into the container, the inner end of the valve core pipe is provided with a radial necking or bottom, the annular wall of the valve core pipe is provided with at least two radial circulation holes, and the outer end of the valve core pipe is connected with a valve cover or a pipe joint; the cup-shaped opening and closing piece is buckled with the inner cavity of the valve core pipe or is embedded into the inner cavity of the valve core pipe in the same axial direction, the annular sealing end surface of the opening and closing piece and the corresponding valve seat A and/or valve seat B form a sealing pair, the valve seat A is tightly attached to the step of the inner wall of the valve core pipe and is tightly connected with the annular inner wall of the valve core pipe, and the valve seat B is the end head at the inner end of; a cross beam is radially embedded in the inner wall of the pipe joint or the inner wall of the valve seat A, and an extension spring is axially arranged between the cross beam and the opening and closing piece; the inner cavity of the pipe joint is a flow passage, and the medium enters and exits the container from the flow hole.
And a through hole and a check valve or a technical screw and a rupture disk are axially arranged at the end part of the opening and closing piece or the valve cover.
The inner wall of the pipe joint is provided with an axial or radial propelling arm.
The connection of the outer end of the valve core pipe and the ring platform or the valve cover of the pipe joint can adopt an open ring key welding structure: the annular platform or the valve cover of the pipe joint is axially embedded into the valve core pipe, the inner wall of the axially protruding part of the valve core pipe is provided with a radial annular key groove, the half edge of an opening annular key matched with the width is embedded into the annular key groove, and the radially protruding part of the annular key is welded with the annular adjacent edge of the valve core pipe and simultaneously welded with the annular adjacent edge of the annular platform or the valve cover of the pipe joint.
In conclusion, the built-in valve has the positive effects that:
1. the intensive and modularized accurate manufacturing is facilitated;
2. the multifunctional electric heating cooker is multifunctional, high in cost performance, long in service life and convenient to maintain;
3. zero leakage, high reliability and high safety.
Drawings
FIG. 1 is a schematic longitudinal sectional view of a first embodiment of the present invention.
Fig. 2 is a schematic longitudinal sectional view of a second embodiment of the present invention.
Fig. 3 is a schematic longitudinal sectional view of a third embodiment of the present invention.
Fig. 4 is a schematic longitudinal sectional view of a fourth embodiment of the present invention.
Fig. 5 and 6 are two schematic longitudinal sectional structures of a fifth embodiment of the present invention.
Fig. 7 is a schematic longitudinal sectional view of a sixth embodiment of the present invention.
FIG. 8 is a schematic longitudinal sectional view of a seventh embodiment of the present invention.
Fig. 9 and 10 are two schematic longitudinal sectional structures of an eighth embodiment of the present invention.
Fig. 11, 12 and 13 are schematic diagrams of three associated longitudinal cross-sectional structures of a ninth embodiment of the invention.
Fig. 14, 15 and 16 are schematic views of three associated longitudinal cross-sectional structures of a tenth embodiment of the present invention.
Fig. 17 is a schematic longitudinal sectional view of an eleventh embodiment of the present invention.
Fig. 18 and 19 are two schematic longitudinal sectional structures of a twelfth embodiment of the invention.
Fig. 20 and 21 are schematic diagrams showing two longitudinal cross-sectional structures of a thirteenth embodiment of the present invention.
Fig. 22 and 23 are two schematic longitudinal sectional structures of a fourteenth embodiment of the invention.
Fig. 24 and 25 are two schematic longitudinal sectional structures of a fifteenth embodiment of the present invention.
In the figure, 1-valve core pipe, 100-step, 101-annular table, 102-check valve, 2-valve cover, 200-pipe joint, 201-pushing arm, 3-open-close piece, 3 ' -sealing end face, 300-valve stem, 301-dry compressed air, 302-compression spring, 302 ' -tension spring, 303-loose joint bolt, 304-cross beam, 4-valve seat A, 4 ' -valve seat B, 400-valve seat disk, 401-sealing piece, 402-bellows sealing piece, 5-container wall, 500-reinforcing plate, 6-open annular key, 7-flow channel, 700-flow hole, 701-flow hole, 8-process screw hole and 800-rupture disk.
Detailed description of the preferred embodiments
Example one
Referring to fig. 1, the safety device is applied to safety, is arranged at the top of a container, is particularly suitable for the safety of a tank car, and is arranged at the top of the tank car; the upper end of the valve core pipe 1 is in bolted connection with the reinforcing plate 500, a sealing element 401 is arranged between the upper end of the valve core pipe 1 and the reinforcing plate 500, the reinforcing plate 500 is welded with the container wall 5, and the lower end of the valve core pipe 1 extends into the container; the lower half part of the cup-shaped opening and closing piece 3 axially penetrates through the inner cavity of the valve core tube 1 and extends into the container, and the annular wall of the opening and closing piece 3 is provided with four radial through holes 700; the annular lower end surface of the radial expansion platform at the upper bottom of the opening and closing piece 3 is a sealing end surface 3 'of an embedded soft material, the concave shoulder part of the valve core pipe 1 is a valve seat A4, and the sealing end surface 3' and a corresponding valve seat A4 form a sealing pair; a ring platform 101 is sleeved on the outer wall of the tail end of the opening and closing piece 3 which crosses the valve core tube 1, a compression spring 302 wrapping the outer wall of the opening and closing piece 3 is arranged between the ring platform 101 and the lower end of the valve core tube 1, and a gap is reserved between the inner ring of the compression spring 302 and the outer wall of the opening and closing piece 3; the inner cavity of the opening and closing element 3 is a flow passage 7, and overpressure medium is discharged from a flow hole 700.
Fig. 1 shows the closed state.
Example two
Referring to fig. 2, like the first embodiment, the difference of fig. 2 is that the upper end of the valve core tube 1 is welded with the reinforcement plate 500, the annular lower end surface of the radially expanding platform at the upper bottom of the shutter 3 is a sealing end surface 3 ', and the recessed shoulder of the valve core tube 1 is an embedded sealing end surface 3' of the valve seat a4 and forms a sealing pair with the corresponding valve seat a 4.
Fig. 2 shows the open state, in which the medium pressure in the container is very high and the valve is opened to release the medium with overpressure.
EXAMPLE III
Referring to the attached figure 3, the device is applied to non-return, pressure opening and closing and supplementary pressurization and is arranged at the bottom of a container; the lower end of the valve core pipe 1 is vertical to the ground, the bottom of the container wall 5 is welded, the upper end of the valve core pipe 1 extends into the container, the upper end of the valve core pipe 1 is provided with a radial necking, the annular wall of the valve core pipe 1 is provided with six radial circulation holes 700, and the heavy hammer type opening and closing piece 3 is embedded into and slides in the inner cavity of the valve core pipe 1; a sealing element 401 is arranged between the bolt connecting pipe joint 200 at the lower end of the valve core pipe 1; the lower end face of the ring of the opening and closing piece 3 is a sealing end face 3 ' and forms a sealing pair with a corresponding valve seat B4 ', and the valve seat B4 ' is the upper end head of the pipe joint 200; the middle part of the upper end of the opening and closing piece 3 is provided with a loose joint bolt 303, the loose joint bolt 303 can be connected with a rope or a rod to penetrate through the upper part of the container, and the opening and closing of the opening and closing piece 3 are controlled by manual, electric, pneumatic and hydraulic; the lumen of the adapter 200 is the flow channel 7, and the media enters and exits the flow port 700.
Fig. 3 shows the closed state.
Example four
Referring to fig. 4, the difference from the third embodiment is that the loose joint bolt 303 is omitted, the valve seat a4 is added, when the pipe joint 200 needs to be repaired or replaced and the part is removed, the sealing end face 3 ' is tightly attached to the valve seat a4, and in the normal closed state, the sealing end face 3 ' is tightly attached to the valve seat B4 '; the upper end of the valve core tube 1 is provided with a bottom, the annular lower end surface of the opening and closing piece 3 is a sealing end surface 3 ', and the sealing end surface 3 ' and the corresponding valve seat A4 and the valve seat B4 ' respectively form a sealing pair, and the valve seat A4 is tightly attached to the step 100 on the inner wall of the valve core tube 1 and is welded with the inner wall of the valve core tube 1.
Fig. 4 shows the open position.
EXAMPLE five
Referring to fig. 5 and 6, the device for supplementing pressure is arranged at the lower part or bottom of the container; if the highest set pressure of the medium in the container is 5MP and the input pressure is 4.5MP, the pressure of the medium in the container is close to or reaches 4.5MP, the pressure on the two end faces of the opening and closing part 3 is equal, the medium is automatically stopped to be conveyed into the container by the aid of the elastic force of the compression spring 302, and the valve is closed to guarantee the safety of the container; the outer end of the valve core pipe 1 is welded with the container wall 5, the inner end of the valve core pipe extends into the container, six radial circulation holes 700 are formed in the annular wall of the valve core pipe 1, and a radial necking is formed in the inner end of the valve core pipe 1; the cup-shaped opening and closing piece 3 is buckled in the inner cavity of the valve core tube 1, and a compression spring 302 is axially arranged between the valve core tube 1 and the opening and closing piece 3; the annular platform 101 of the pipe joint 200 is axially embedded into the valve core pipe 1, the inner wall of the axially protruding part of the valve core pipe 1 is provided with a radial annular key groove, the half edge of an opening annular key 6 with the matched width is embedded into the annular key groove, the radial protruding part of the annular key is welded with the annular adjacent edge of the valve core pipe 1, and meanwhile, the annular adjacent edge of the annular platform 101 is welded, so that the medium pressure in a container can be resisted, and the welding seam can not crack; during maintenance, the special tool can be used for conveniently removing the opening annular key 6 without damaging the main body, unloading the pipe joint 200 and the opening and closing piece 3, repairing the seal, and replacing and adjusting the compression spring 302; the outer end of the pipe joint 200 is a flange, the inner end of the pipe joint 200 is a valve seat B4 ', and the annular sealing end surface 3 ' of the opening and closing piece 3 and the corresponding valve seat B4 ' form a sealing pair; the lumen of the adapter 200 is the flow path 7 for the media to pass into and out of the container through the flow port 700.
Fig. 5 shows the medium input state.
Fig. 6 shows the auto-close state.
EXAMPLE six
Referring to fig. 7, the pressure opening and closing device is applied to pressure opening and closing and is arranged at the lower part or the bottom of the container; the outer end of the cup-shaped valve core pipe 1 is welded with the container wall 5, and the inner end of the cup-shaped valve core pipe extends into the container; the cup-shaped opening and closing piece 3 is buckled in the inner cavity of the valve core pipe 1 and is connected with the inner cavity of the valve core pipe by a corrugated pipe sealing piece 402 to form a closed chamber, and a compression spring 302 is axially arranged in the chamber; six radial flow holes 700 are formed in the annular wall of the valve core pipe 1; the outer end of the valve core pipe 1 is connected with a pipe joint 200 by a bolt; the annular sealing end face 3 ' of the opening and closing piece 3 and a corresponding valve seat B4 ' form a sealing pair, and the valve seat B4 ' is the inner end head of the pipe joint 200; a sealing element 401 is arranged between the shoulder of the pipe joint 200 and the shoulder of the valve core pipe 1; the lumen of the adapter 200 is the flow path 7 for the media to pass into and out of the container through the flow port 700.
Fig. 7 shows the closed position.
EXAMPLE seven
Referring to fig. 8, it can be applied to a pressure opening input, and also to an insertion opening input and output, installed at an upper or lower portion of the container; the outer end of the cup-shaped valve core pipe 1 is welded with the container wall 5, and the inner end of the cup-shaped valve core pipe extends into the container; the cup-shaped opening and closing piece 3 is buckled in the inner cavity of the valve core tube 1 to form a cabin, and a compression spring 302 is axially arranged in the cabin; eight radial flow holes 700 are formed in the annular wall of the valve core pipe 1; the inner end of the pipe joint 200 is inserted into the inner cavity of the valve core pipe 1; the annular sealing end face 3' of the opening and closing piece 3 and the corresponding valve seat A4 form a sealing pair, and the valve seat A4 is tightly attached to the step 100 of the inner wall of the valve core pipe 1 and is welded with the inner wall of the valve core pipe 1; a sealing element 401 is arranged between the notch of the inner end of the pipe joint 200 and the valve seat A4, and meanwhile, the sealing element 401 is also arranged between the pipe joint 200 and the annular inner wall of the valve core pipe 1; the method can be divided into three stages: firstly, pressure input, the pipe joint 200 does not have the pushing arm 201, secondly, the valve cover is closed, thirdly, insertion and output are carried out, and the pipe joint 200 has the pushing arm 201.
Fig. 8 shows the medium output state.
Example eight
Referring to fig. 9 and 10, the pressure opening and closing device is applied to pressure opening and closing and is arranged at the lower part or the bottom of the container; the outer end of the cup-shaped valve core pipe 1 is welded with the container wall 5, and the inner end of the cup-shaped valve core pipe extends into the container; the cup-shaped opening and closing piece 3 is buckled in the inner cavity of the valve core pipe 1 and is connected with the inner cavity of the valve core pipe by a corrugated pipe sealing piece 402 to form a closed cabin, and dry compressed air 301 is injected into the cabin to form an air spring; six radial flow holes 700 are formed in the annular wall of the valve core pipe 1; the pipe joint 200 is connected with the outer end of the valve core pipe 1 by bolts, the end head of the inner end of the pipe joint 200 is a valve seat B4 ', and meanwhile, the valve seat B4' is blocked by the step 100, and the annular sealing end surface 3 'of the opening and closing piece 3 and the corresponding valve seat B4' form a sealing pair; a sealing element 401 is arranged between the pipe joint 200 and the shoulder of the valve core pipe 1; the lumen of the adapter 200 is the flow path 7 for the media to pass into and out of the container through the flow port 700.
Fig. 9 shows the medium input state, the pressure of the injected medium is greater than the elastic force of the dry compressed air 301, and the valve is opened.
Fig. 10 shows the closed position.
Example nine
Reference is made to figures 11, 12 and 13, which are associated with three states of application, with part differences from each other, all three figures being numbered; the tank is mainly applied to the tanks of automobiles, trains and LNG ships and is arranged at the lower part or the bottom of the tank; the outer end of the cup-shaped valve core pipe 1 is welded with the container wall 5, and the inner end of the cup-shaped valve core pipe extends into the container, and six radial circulation holes 700 are formed in the annular wall of the valve core pipe 1; fig. 11 shows that the outer end of the valve core pipe 1 is connected with a pipe joint 200 in the input process; FIG. 12 shows that the outer end of the valve core tube 1 is connected with the valve cover 2 in the transportation and closing process; FIG. 13 shows that the outer end of the valve core tube 1 is connected with the pipe joint 200 in the output process by bolts; a sealing element 401 is arranged between the pipe joint 200 and the shoulder of the valve core pipe 1, wherein the sealing element 401 is arranged between the outer ring wall of the pipe joint 200 and the inner wall of the valve core pipe 1 in the output process; the cup-shaped opening and closing piece 3 is buckled in the inner cavity of the valve core tube 1, a bellows seal 402 is axially arranged between the valve core tube 1 and the opening and closing piece 3 to form a closed cabin, and a compression spring 302 is axially arranged in the cabin; the annular sealing end surface 3' of the opening and closing piece 3 and the corresponding valve seat A4 tightly attached to the step 100 on the inner wall of the valve core tube 1 form a sealing pair; the inner cavity of the pipe joint 200 is a flow passage 7, and media enters and exits the container from the flow hole 700; the three figures represent three states, namely a medium input state, a transport closed state and an output state; wherein, the input state belongs to pressure opening and closing, the input is stopped, and the valve is closed immediately; the outer surfaces of the valve covers 2 in a transportation closed state are lower than the container wall 5, so that collision can be effectively prevented, and meanwhile, the double-layer sealing ensures transportation safety; in the output state, the inner wall of the pipe joint 200 is provided with a pushing arm 201, the bolt is gradually screwed in, and the pushing arm 201 pushes the opening and closing piece 3 to move axially and open the valve.
Fig. 11 shows the medium input state.
Fig. 12 shows the transport closed position.
Fig. 13 shows the medium output state.
Example ten
Referring to figures 14, 15 and 16, there are three associated states of use, differing in part from one another, all three figures being numbered; the tank is mainly applied to the tanks of automobiles, trains and LNG ships and is arranged at the lower part or the bottom of the tank; the outer end of the cup-shaped valve core pipe 1 is welded with the container wall 5, and the inner end of the cup-shaped valve core pipe extends into the container, and six radial circulation holes 700 are formed in the annular wall of the valve core pipe 1; fig. 14 shows that the outer end of the valve core pipe 1 is connected with the pipe joint 200 in the input process; FIG. 15 shows that the outer end of the valve core tube 1 is connected with the valve cover 2 in the transportation and closing process, and the valve cover 2 is provided with an axial technical screw opening 8 and a rupture disk 800; fig. 16 shows that the outer end of the valve core tube 1 is connected with the pipe joint 200 in the output process by bolts, the inner wall of the pipe joint 200 is provided with a pushing arm 201, the bolts are screwed in step by step, and the pushing arm 201 pushes the opening and closing member 3 to move axially and open the valve; a sealing element 401 is arranged between the pipe joint 200 and the shoulder of the valve core pipe 1, wherein the sealing element 401 is arranged between the outer ring wall of the pipe joint 200 and the inner wall of the valve core pipe 1 in the output process; the cup-shaped opening and closing piece 3 is coaxially embedded into the inner cavity of the valve core tube 1, one end of the valve rod 300 is welded with the middle part of the opening and closing piece 3, the other end axially penetrates through the valve seat disc 400 and the tail end of the compression spring 302 to be in threaded connection with the annular table 101, and the valve seat disc 400 is tightly attached to the step 100 on the inner wall of the valve core tube 1 and is welded with the inner wall of the valve core tube 1; the central hole of the valve seat disk 400 is connected with the valve rod 300 in a sliding way, the periphery of the valve seat disk is a valve seat A4, and the ring waist of the valve seat disk is provided with four to six axial overflowing holes 701; the annular sealing end surface 3' of the opening and closing piece 3 and the corresponding valve seat A4 form a sealing pair; the inner cavity of the pipe joint 200 is a flow passage 7, and media enters and exits the container from the flow hole 700; the input state belongs to the opening of a supplementary pressurization mode, the input is automatically stopped when the pressure reaches the set pressure, and the valve is immediately closed; the outer surfaces of the valve covers 2 in a transportation closed state are lower than the container wall 5, so that collision can be effectively prevented, and meanwhile, the double-layer sealing ensures transportation safety; the technical screw 8 and the rupture disk 800 of the valve cover 2 shown in fig. 15 can prevent the inner cavity of the valve core tube 1 from releasing sudden medium gasification explosive force under special conditions, and then the technical screw 8 can be blocked by a bolt.
Fig. 14 shows the medium input state.
Fig. 15 shows the transport closed position.
Fig. 16 shows the medium output state.
EXAMPLE eleven
Referring to fig. 17, for supplemental pressurization, mounted in the lower or bottom portion of the vessel; the outer end of the cup-shaped valve core pipe 1 is welded with the container wall 5, and the inner end of the cup-shaped valve core pipe extends into the annular wall of the container valve core pipe 1 and is provided with six radial flow holes 700; the outer end of the valve core pipe 1 is connected with a pipe joint 200 through a screw rod, and a sealing element 401 is arranged between the pipe joint 200 and the shoulder of the valve core pipe 1; the cup-shaped opening and closing piece 3 is buckled in the inner cavity of the valve core tube 1, and a compression spring 302 is axially arranged between the valve core tube 1 and the opening and closing piece 3; the annular sealing end face 3' of the opening and closing piece 3 and the corresponding valve seat A4 tightly attached to the step 100 on the inner wall of the valve core tube 1 form a sealing pair.
Fig. 17 shows the medium input state.
Example twelve
Referring to fig. 18 and 19, in which the step 100 and the valve seat a4 are added in fig. 19, when the pipe joint 200 needs to be repaired and removed, the sealing end face 3 ' is tightly attached to the valve seat a4, and in a normal closed state, the sealing end face 3 ' is tightly attached to the valve seat B4 '; there are differences in the components between each other, both figures having reference numerals; the device is applied to supplementary pressurization, is arranged at the lower part or the bottom of the container, and can automatically stop inputting when the pressure of a medium in the container approaches or reaches the required pressure; the outer end of the valve core tube 1 is welded with the container wall 5, the inner end of the valve core tube extends into the container, the inner end of the valve core tube 1 is provided with a radial necking, the annular wall of the valve core tube 1 is provided with six radial through holes 700, and the cup-shaped opening and closing piece 3 is buckled in the inner cavity of the valve core tube 1; a beam 304 is radially arranged on the inner wall of the pipe joint 200, an extension spring 302' is axially arranged between the beam 304 and the opening and closing piece 3, and the outer end of the pipe joint 200 is provided with a flange; the annular sealing end face 3 ' of the opening and closing piece 3 and the corresponding valve seat A4 and/or valve seat B4 ' form a sealing pair, the valve seat A4 is tightly attached to the step 100 of the inner wall of the valve core tube 1 and is welded with the inner wall of the valve core tube 1, and the valve seat B4 ' is the end head of the inner end of the pipe joint 200; the annular platform 101 of the pipe joint 200 is axially embedded into the valve core pipe 1, the inner wall of the axially protruding part of the valve core pipe 1 is provided with a radial annular key groove, the half edge of an opening annular key 6 with the matched width is embedded into the annular key groove, the radial protruding part of the annular key is welded with the annular adjacent edge of the valve core pipe 1, and meanwhile, the annular adjacent edge of the annular platform 101 is welded, so that the medium pressure in a container can be resisted, and the welding seam can not crack; during maintenance, the special tool can be used for conveniently removing the opening ring-shaped key 6 without damaging the main body, unloading the pipe joint 200 and the opening and closing piece 3, repairing the seal, and replacing and adjusting the extension spring 302'.
Fig. 18 shows the medium input state.
Fig. 19 shows the auto-close state.
EXAMPLE thirteen
Referring to fig. 20 and 21, in fig. 20, the inner end of the valve core tube 1 is provided with a radial necking for opening and closing, stopping and supplementing pressurization of reserved pressure of a pipe network; FIG. 21 shows that the inner end of the valve core tube 1 is provided with a bottom and is applied to a reserved buffer check of a pipe network; the outer end of the valve core pipe 1 is welded with the container wall 5, the inner end of the valve core pipe extends into the container, six radial through holes 700 are formed in the annular wall of the valve core pipe 1, and the cup-shaped opening and closing piece 3 is coaxially embedded into the inner cavity of the valve core pipe 1; the inner wall of the axial protruding part of the valve core pipe 1 is provided with a radial annular key groove, the half edge of an opening annular key 6 with the matched width is embedded into the annular key groove, and the radial protruding part of the annular key groove is welded with the annular adjacent edge of the valve core pipe 1 and the annular adjacent edge of the valve cover 2; the inner wall of the valve core pipe 1 is provided with a step 100 which is a valve seat A4, the valve seat A4 is welded with the inner wall of the valve core pipe 1, and the annular sealing end surface 3' of the opening and closing piece 3 and the corresponding valve seat A4 form a sealing pair; the inner wall of the valve seat a4 has a beam 304, and an extension spring 302' is axially arranged between the beam 304 and the opening and closing member 3.
Fig. 20 and 21 show the occlusion closed state.
Example fourteen
Referring to fig. 22 and 23, the pressure self-force input and control output device is arranged at the lower part of the container; the outer end of the cup-shaped valve core pipe 1 is welded with the container wall 5, the inner end of the cup-shaped valve core pipe extends into the container, six radial through holes 700 are formed in the annular wall of the valve core pipe 1, and an axial through hole and a check valve 102 are formed in the bottom of the inner end of the valve core pipe 1; the cup-shaped opening and closing piece 3 is buckled in the inner cavity of the valve core tube 1, and a compression spring 302 is axially arranged between the valve core tube 1 and the opening and closing piece 3; the pipe joint 200 is of an angle type, a downward flow channel 7 and the axial lead of the valve core pipe 1 form an angle of 90 degrees, the middle part of the opening and closing piece 3 is fixedly connected with the inner end of the valve rod 300, and the outer end of the valve rod 300 axially penetrates through the corrugated pipe sealing piece 402 and the end bottom of the pipe joint 200 from inside to outside; the annular platform 101 of the pipe joint 200 is axially embedded into the valve core pipe 1, the inner wall of the axially protruding part of the valve core pipe 1 is provided with a radial annular key groove, the half edge of an opening annular key 6 with the matched width is embedded into the annular key groove, and the radial protruding part of the annular key is welded with the annular adjacent edge of the valve core pipe 1 and is welded with the adjacent edge of the annular platform 101; the end head of the inner end of the pipe joint 200 is a valve seat B4 ', and the annular sealing end surface 3 ' of the opening and closing piece 3 and the corresponding valve seat B4 ' form a sealing pair; the lumen of the adapter 200 is the flow path 7 for the media to pass into and out of the container through the flow port 700.
Fig. 22 shows the medium input state.
FIG. 23 shows the valve automatically closed when the input line is stopped.
When output is required, the valve rod 300 is pushed, the valve is opened, and the medium flows out of the flow channel 7.
Example fifteen
Referring to fig. 24 and 25, the pressure self-force input and control output device is mounted at the lower part of the container; the outer end of the valve core pipe 1 is welded with the container wall 5, the inner end of the valve core pipe extends into the container, and the inner end of the valve core pipe 1 is provided with a radial necking; the plate-shaped opening and closing piece 3 slides in the inner cavity of the valve core tube 1, and the annular wall of the valve core tube 1 is provided with four radial through holes 700; the pipe joint 200 is of an angle type, a downward flow channel 7 and the axial lead of the valve core pipe 1 form an angle of 90 degrees, the middle part of the opening and closing part 3 is fixedly connected with the inner end of the valve rod 300, the outer end of the valve rod 300 axially penetrates through the corrugated pipe sealing element 402, the end bottom of the pipe joint 200, the compression spring 302 and the annular table 101 from inside to outside, and the middle part of the annular table 101 is fixedly connected with the tail end of the valve rod 300; the annular platform 101 of the pipe joint 200 is axially embedded into the valve core pipe 1, the inner wall of the axially protruding part of the valve core pipe 1 is provided with a radial annular key groove, an open annular key 6 with matched width is embedded into the annular key groove, and the radial protruding part of the annular key groove is welded with the annular adjacent edge of the valve core pipe 1 and the annular adjacent edge of the annular platform 101; the end head of the inner end of the pipe joint 200 is a valve seat B4 ', and the annular sealing end surface 3 ' of the opening and closing piece 3 and the corresponding valve seat B4 ' form a sealing pair; the lumen of the adapter 200 is the flow path 7 for the media to pass into and out of the container through the flow port 700.
Fig. 24 shows the input state.
Fig. 25 shows the closed position.
The input can be automatically input by self without pushing the valve rod 300; when the medium is output, the valve rod 300 is pushed, the valve is opened, and the medium flows out of the flow channel 7.

Claims (10)

1. The built-in valve is characterized in that the upper end of the valve core tube (1) which is vertical to the ground and radially expanded is fixedly connected with the top of the container wall (5) or a reinforcing plate (500) connected with the top of the container wall (5), and the lower end of the valve core tube (1) extends into the container; the upper bottom of the cup-shaped opening and closing piece (3) is provided with a radially expanded platform, the annular lower end surface of the radially expanded platform is a sealing end surface (3 '), the shoulder part at the upper end of the valve core pipe (1) is a valve seat A (4), and the sealing end surface (3') and the corresponding valve seat (4) form a sealing pair; the lower half part of the opening and closing piece (3) penetrates through the valve core pipe (1) and extends into the container, and the annular wall of the opening and closing piece (3) is provided with at least two radial flow holes (700); a ring platform (101) is sleeved on the outer wall of the tail end of the opening and closing piece (3) which crosses over the bottom end of the valve core pipe (1), and a compression spring (302) wrapping the outer wall of the opening and closing piece (3) is arranged between the ring platform (101) and the bottom end of the corresponding valve core pipe (1); the inner cavity of the opening and closing piece (3) is a flow passage (7), and overpressure medium is discharged to the atmosphere environment or a special pipeline from the flow hole (700).
2. The built-in valve is characterized in that the lower end of the valve core tube (1) which is vertical to the ground and radially expanded is fixedly connected with the bottom of the container wall (5), the upper end of the valve core tube (1) is fixedly connected with the bottom of the container, the upper end of the valve core tube (1) extends into the container, the upper end of the valve core tube (1) is provided with a radial necking or bottom, and the annular wall of the valve core tube (1) is provided with at; the weight type opening and closing piece (3) is embedded into and axially slides in the inner cavity of the valve core tube (1), and the lower end of the valve core tube (1) is connected with the valve cover (2) or the pipe joint (200); the annular lower end face of the opening and closing piece (3) is a sealing end face (3 ') and forms a sealing pair with a corresponding valve seat A (4) and/or a valve seat B (4 '), the valve seat A (4) is tightly attached to the step (100) of the inner wall of the valve core pipe (1) and is tightly connected with the annular inner wall of the valve core pipe (1), and the valve seat B (4 ') is the upper end head of the pipe joint (200); the inner cavity of the pipe joint (200) is a flow passage (7), and the medium enters and exits the container from the flow hole (700).
3. The built-in valve is characterized in that the radially expanded outer end of the valve core pipe (1) is fixedly connected with the container wall (5), the inner end of the valve core pipe extends into the container, the inner end of the valve core pipe (1) is provided with a radial necking or bottom, the annular wall of the valve core pipe (1) is provided with at least two radial through holes (700), and the outer end of the valve core pipe (1) is connected with the valve cover (2) or the pipe joint (200); the annular sealing end face (3 ') of the cup-shaped opening and closing piece (3) and the corresponding valve seat A (4) and/or valve seat B (4 ') form a sealing pair, wherein the valve seat A (4) is tightly attached to the step (100) of the inner wall of the valve core pipe (1) and is tightly connected with the annular inner wall of the valve core pipe (1), and the valve seat B (4 ') is the inner end of the pipe joint (200); the opening and closing piece (3) is buckled with the inner cavity of the valve core pipe (1) to form a cabin or is connected with the valve core pipe and the valve core pipe to form a closed cabin by adopting a corrugated pipe sealing piece (402), and a compression spring (302) is axially arranged in the cabin or dry compressed air (301) is injected into the cabin; the inner cavity of the pipe joint (200) is a flow passage (7), and the medium enters and exits the container from the flow hole (700).
4. The built-in valve is characterized in that the radially expanded outer end of the valve core pipe (1) is fixedly connected with the container wall (5), the inner end of the valve core pipe extends into the container, the inner end of the valve core pipe (1) is provided with a radial necking or bottom, the annular wall of the valve core pipe (1) is provided with at least two radial through holes (700), and the outer end of the valve core pipe (1) is connected with the valve cover (2) or the pipe joint (200); the cup-shaped opening and closing piece (3) is coaxially embedded into the inner cavity of the valve core pipe (1), the middle part of the opening and closing piece (3) is fixedly connected with one end of a valve rod (300), the other end of the valve rod (300) axially penetrates through a valve seat disc (400) and the tail end of a compression spring (302) to be fixedly connected with a ring platform (101), wherein the valve seat disc (400) is tightly attached to the step (100) of the inner wall of the valve core pipe (1) and is tightly connected with the inner wall of the valve core pipe (1), and the annular sealing end surface (3') of the opening and closing piece (3) and a corresponding valve seat A (4) form; the inner cavity of the pipe joint (200) is a flow passage (7), and the medium enters and exits the container from the flow hole (700).
5. The built-in valve is characterized in that the radially expanded outer end of the valve core pipe (1) is fixedly connected with the container wall (5), the inner end of the valve core pipe extends into the container, the inner end of the valve core pipe (1) is provided with a radial necking or bottom, the annular wall of the valve core pipe (1) is provided with at least two radial through holes (700), and the outer end of the valve core pipe (1) is connected with the valve cover (2) or the pipe joint (200); the cup-shaped opening and closing piece (3) is buckled in the inner cavity of the valve core pipe (1) or is embedded into the inner cavity of the valve core pipe (1) in the same axial direction, the annular sealing end surface (3 ') of the opening and closing piece (3) and the corresponding valve seat A (4) and/or valve seat B (4 ') form a sealing pair, wherein the valve seat A (4) is tightly attached to the step (100) of the inner wall of the valve core pipe (1) and is tightly connected with the annular inner wall of the valve core pipe (1), and the valve seat B (4 ') is the inner end of the pipe joint (200); a cross beam (304) is radially embedded in the inner wall of the pipe joint (200) or the inner wall of the valve seat A (4), and an extension spring (302') is axially arranged between the cross beam (304) and the opening and closing piece (3); the inner cavity of the pipe joint (200) is a flow passage (7), and the medium enters and exits the container from the flow hole (700).
6. A valve according to claim 3, wherein the coupling (200) is angled, the downward flow channel (7) is at 90 ° to the axial center line of the valve core tube (1), the middle part of the opening and closing member (3) is fixedly connected to the inner end of the valve stem (300), the outer end of the valve stem (300) axially passes through the bellows seal (402) and the end of the coupling (200), and the bellows seal (402) is connected to the valve stem (300) at one end and to the coupling (200) at the other end.
7. A built-in valve according to claim 3, characterized in that the pipe joint (200) is of an angle type, the downward flow channel (7) is at 90 degrees to the axial line of the valve core pipe (1), the middle part of the opening and closing member (3) is fixedly connected with the inner end of the valve rod (300), the outer end of the valve rod (300) axially passes through the bellows seal (402), the end part of the pipe joint (200), the compression spring (302) and the ring platform (101), the middle part of the ring platform (101) is fixedly connected with the tail end of the valve rod (300), one end of the bellows seal (402) is connected with the valve rod (300) and the other end is connected with the end part of the pipe joint (200.
8. A built-in valve according to any of claims 3 to 5, characterized in that the end of the opening and closing member (3) or the valve cover (2) is provided with a through hole and a check valve (102) or a technical screw (8) and a rupture disk (800) in the axial direction.
9. A built-in valve according to any of claims 3 to 5, characterized in that the inner wall of the pipe connection (200) is provided with axial or radial pushing arms (201).
10. A built-in valve according to any one of claims 2 to 5, characterized in that the connection between the outer end of the valve core tube (1) and the ring platform (101) of the pipe joint (200) or the valve cover (2) can adopt an open ring key (6) welding structure: the annular platform (101) or the valve cover (2) of the pipe joint (200) is axially embedded into the valve core pipe (1), the inner wall of the axially protruding part of the valve core pipe (1) is provided with a radial annular key groove, the half edge of an opening annular key (6) with the matched width is embedded into the annular key groove, and the radial protruding part of the annular key groove is welded with the annular adjacent edge of the valve core pipe (1) and is welded with the annular adjacent edge of the annular platform (101) or the valve cover (2).
CN202010769623.0A 2020-08-04 2020-08-04 Built-in valve Pending CN111853299A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010769623.0A CN111853299A (en) 2020-08-04 2020-08-04 Built-in valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010769623.0A CN111853299A (en) 2020-08-04 2020-08-04 Built-in valve

Publications (1)

Publication Number Publication Date
CN111853299A true CN111853299A (en) 2020-10-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010769623.0A Pending CN111853299A (en) 2020-08-04 2020-08-04 Built-in valve

Country Status (1)

Country Link
CN (1) CN111853299A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114833413A (en) * 2020-12-16 2022-08-02 中国航发常州兰翔机械有限责任公司 Clamp for welding screw base of radial diffuser and vacuum brazing process of clamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114833413A (en) * 2020-12-16 2022-08-02 中国航发常州兰翔机械有限责任公司 Clamp for welding screw base of radial diffuser and vacuum brazing process of clamp

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