CN113803475A - Bidirectional isobaric ultra-low temperature pure metal sealing butterfly valve - Google Patents

Bidirectional isobaric ultra-low temperature pure metal sealing butterfly valve Download PDF

Info

Publication number
CN113803475A
CN113803475A CN202111083348.8A CN202111083348A CN113803475A CN 113803475 A CN113803475 A CN 113803475A CN 202111083348 A CN202111083348 A CN 202111083348A CN 113803475 A CN113803475 A CN 113803475A
Authority
CN
China
Prior art keywords
valve
isobaric
ultra
elastic
low temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111083348.8A
Other languages
Chinese (zh)
Inventor
洪瑞都
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beifa Group Beijing Valve Co ltd
Original Assignee
Beifa Group Beijing Valve Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beifa Group Beijing Valve Co ltd filed Critical Beifa Group Beijing Valve Co ltd
Priority to CN202111083348.8A priority Critical patent/CN113803475A/en
Publication of CN113803475A publication Critical patent/CN113803475A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • F16K1/16—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 with pivoted closure-members
    • F16K1/18—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 with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • 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
    • F16K1/16—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 with pivoted closure-members
    • F16K1/18—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 with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • 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
    • F16K1/46—Attachment of sealing rings
    • 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
    • F16K1/48—Attaching valve members to screw-spindles

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

The application discloses a bidirectional isobaric ultra-low temperature pure metal sealing butterfly valve, which comprises a valve body, a valve seat, an energy storage type sealing ring, a four-open ring, a compression spring and the like, wherein the valve body and the valve seat are in split design, so that the valve seat is provided with a piston for following compensation sealing, the replacement is convenient, and the maintenance cost is reduced; meanwhile, an energy storage type sealing ring combined sealing structure is arranged between the valve body and the valve seat, the sealing material group, namely a high-temperature resistant material, is replaced, and therefore the ultra-low-temperature butterfly valve is converted into a high-temperature resistant two-way pressure butterfly valve. Because the butterfly valve has the characteristics of small volume and light weight, and the bidirectional isobaric design, the butterfly valve replaces other valve types, reduces the cost and saves the energy.

Description

Bidirectional isobaric ultra-low temperature pure metal sealing butterfly valve
Technical Field
The utility model relates to the technical field of valves, especially, relate to a two-way isobaric ultra-low temperature pure metal seal butterfly valve.
Background
A butterfly valve, also called a flap valve, is a regulating valve with a simple structure, and can be used for on-off control of pipeline media, namely a valve with a closing part (a valve clack or a butterfly plate) which is a disc and rotates around a valve shaft to open and close, and the valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.
The butterfly valve is simple in structure, small in size, light in weight, low in material consumption, small in installation size, small in driving torque, simple and convenient to operate and rapid, and can also have a good flow regulation function and a sealing closing characteristic.
In view of this, the present application is specifically made.
Disclosure of Invention
The present application is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the purpose of this application is to provide a two-way isobaric ultra-low temperature pure metal seal butterfly valve, includes:
the valve comprises a valve body, wherein a first limiting part and a first annular groove are arranged on the valve body at intervals in the thickness direction of the valve body, and four open rings are arranged in the first annular groove;
the valve seat is positioned in the valve body and positioned between the first limiting part and the first annular groove, the first limiting part is used for limiting the valve seat to move towards a first direction, the four-open ring is used for limiting the valve seat to move towards a direction opposite to the first direction, an annular step is arranged on the outer wall of the valve seat, and a first cavity is formed between the annular step and the valve body;
a composite seal structure located in the first chamber, the composite seal structure comprising: first seal structure and second seal structure, first seal structure is located and is close to one side of first spacing portion, second seal structure is located and is close to one side of four ring-opening, first seal structure be used for restricting the medium by first spacing portion one side orientation four ring-opening one side is flowed, second seal structure be used for restricting the medium by four ring-opening one side orientation first spacing portion removes.
Optionally or preferably, the first structure comprises: the first pressing part is connected with the first elastic part, one side of the first pressing part, which is far away from the first elastic part, faces the first limiting part, and at least part of area on the first elastic part is positioned in the first elastic sealing part;
when the first extrusion part is extruded by a medium, the first extrusion part extrudes the first elastic part, and the first elastic sealing part expands under the action of the first elastic part, so that the medium is limited to flow from one side of the first limiting part to one side of the four open rings.
Optionally or preferably, the second structure comprises: the second pressing part is connected with the second elastic part, one side of the second pressing part, which is far away from the second elastic part, faces the four open rings, and at least part of area on the second elastic part is located in the second elastic sealing part;
when the second extrusion part is extruded by a medium, the second extrusion part extrudes the second elastic part, and the second elastic sealing part expands under the action of the second elastic part, so that the medium is limited to move from one side of the four open rings to the first limiting part.
Alternatively or preferably, the first structure and the second structure are fixedly connected.
Optionally or preferably, a first clamping ring is provided between the valve seat and the four-open ring.
Optionally or preferably, a plurality of first through holes are arranged on the four open rings, a first elastic piece and a first blocking piece are arranged in the first through holes, and the first elastic piece is located between the valve seat and the first blocking piece.
Optionally or preferably, the method further comprises:
the valve rod is positioned in the valve body and penetrates through the valve seat, and the valve rod extends from one end of the valve body to the other end of the valve body;
and the butterfly plate is fixedly arranged on the valve rod.
Optionally or preferably, an annular cutting edge is arranged at one end, close to the first limiting part, of the valve seat, and in contact with the butterfly plate.
Optionally or preferably, one end of the butterfly plate, which is in contact with the valve seat, is designed in an arc surface.
Optionally or preferably, the first limit stop is annular.
The bidirectional isobaric ultralow-temperature pure metal sealing butterfly valve comprises a valve body, a valve seat, an energy storage type sealing ring, a four-open ring, a compression spring and the like, wherein the valve body and the valve seat are in split design, so that the valve seat is provided with a piston for follow-up compensation sealing, the replacement is convenient, and the maintenance cost is reduced; meanwhile, an energy storage type sealing ring combined sealing structure is arranged between the valve body and the valve seat, the sealing material group, namely a high-temperature resistant material, is replaced, and therefore the ultra-low-temperature butterfly valve is converted into a high-temperature resistant two-way pressure butterfly valve. Because the butterfly valve has the characteristics of small volume and light weight, and the bidirectional isobaric design, the butterfly valve replaces other valve types, reduces the cost and saves the energy.
Drawings
FIG. 1 is a schematic structural diagram of a bidirectional isobaric ultra-low temperature pure metal sealing butterfly valve provided by an embodiment of the present application;
FIG. 2 is an enlarged schematic view at A shown in FIG. 1;
FIG. 3 is a schematic structural view of the composite seal structure shown in FIG. 2;
fig. 4 is a schematic diagram of the structure of the four-open loop shown in fig. 2.
Detailed Description
In order to better understand the scheme of the application, the following detailed description is provided for the application with the accompanying drawings and the detailed description.
It should be understood that the terms "first," "second," "third," and the like, are used for limiting the components, are used for distinguishing the components, and have no special meaning if not stated otherwise, and therefore, should not be construed as limiting the scope of the present application. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Referring to fig. 1, the bidirectional isobaric ultra-low temperature pure metal sealing butterfly valve provided by the present embodiment includes: the valve comprises a valve body 1, a valve seat 2, a valve rod 3, a butterfly plate 4 and a combined sealing structure 5. The valve seat 2 is located in the valve body 1. The valve rod 3 is located in the valve body 1 and penetrates through the valve seat 2, and the valve rod 3 extends to the other end of the valve body 1 from one end of the valve body 1. The butterfly plate 4 is located in the valve seat 2 and is fixedly arranged on the valve rod 3. Illustratively, the butterfly plate 4 may be fixed to the valve stem 3 by a pin. When the valve rod 3 is rotated, the valve rod 3 can drive the butterfly plate 4 to move, and then the bidirectional isobaric ultra-low temperature pure metal sealing butterfly valve can be opened or closed. It can be understood that, in the embodiment of the present application, the valve rod 3 is designed in a shaft type, so that when the medium is prone to generate irregular wave energy (such as vibration, noise, etc.) at a high flow rate, the phenomenon that the valve rod 3 is not opened or closed in position due to the accumulated tolerance of multi-segment connection when the valve rod is designed in multiple segments can be avoided, and the vibration resistance, the torsion resistance, and the embrittlement resistance of the ultralow temperature material of the valve rod are improved.
A first limiting part 11 and a first annular groove 12 are arranged on the valve body 1 at intervals in the thickness direction of the valve body 1, and a four-open ring 13 is arranged in the first annular groove 12. Illustratively, the first stopper portion 11 has a ring shape. Illustratively, the first position-limiting portion 11 may be an annular boss.
The valve seat 2 is located between the first stopper portion 11 and the first annular groove 12. The first stopper 11 is configured to limit the valve seat 2 from moving in a first direction (i.e., a direction from the four-open ring 13 toward the first stopper 11). The four open rings 13 are used to restrict the valve seat 2 from moving in a direction opposite to the first direction (i.e., in a direction from the first stopper portion 11 toward the four open rings 13). An annular step 21 may be provided on the outer wall of the valve seat 2. A first chamber 22 is formed between the annular step 21 and the valve body 1.
The composite sealing structure 5 is located in the first chamber 22. Wherein, combination seal structure 5 includes: a first seal structure 51 and a second seal structure 52. The first seal structure 51 is located on the side close to the first stopper portion 11, and the second seal structure 52 is located on the side close to the four open rings 13. The first sealing structure 51 is used for limiting the medium from flowing from one side of the first limiting part 11 to one side of the four-open ring 13; the second seal structure 52 is for restricting the medium from moving from one side of the four-open ring 13 toward one side of the first stopper portion 11. Therefore, the sealing performance of resisting positive pressure and reaction force is realized, and the sealing performance of the bidirectional isobaric ultra-low temperature pure metal sealing butterfly valve is improved. In addition, the sealing material forming the combined sealing structure can be replaced by a high-temperature resistant material, so that the ultra-low-temperature butterfly valve is converted into a high-temperature resistant bidirectional pressure butterfly valve, the application range of the valve is greatly improved through the conversion of the combined sealing structure, and different main materials can be selected to meet the requirement of using under any working condition. Because the butterfly valve has the characteristics of small volume and light weight, and the bidirectional isobaric design, the butterfly valve replaces other valve types, reduces the cost and saves the energy. By way of example, the composite seal 5 may be referred to as an accumulator seal.
In one example, the first structure 51 may include: a first pressing part 511, a first elastic part 512, and a first elastic sealing part 513. The first pressing portion 511 is connected to the first elastic portion 512, one side of the first pressing portion 511, which is away from the first elastic portion 512, faces the first limiting portion 11, and at least a partial area of the first elastic portion 512 is located in the first elastic sealing portion 513. When the first pressing portion 511 is pressed by the medium, the first pressing portion 511 may press the first elastic portion 512, and the first elastic sealing portion 513 expands under the action of the first elastic portion 512, thereby restricting the medium from flowing from one side of the first stopper portion 11 toward one side of the four-open ring 13. It is understood that when the first elastic part 512 is pressed and expanded, the first elastic part 512 may press the first elastic sealing part 513, so that the first elastic sealing part 513 is in close contact with the valve body 1, thereby achieving a sealing effect.
For example, the first pressing portion 511 may be a ring spring having a T shape, and the ring spring may be fitted over the valve seat 2; the first elastic portion 512 may be a circular ring spring, and the ring spring may be sleeved on the valve seat 2; the first elastic sealing part 513 may be a sealing ring made of rubber, and one side of the sealing ring is open, and a space capable of accommodating the first elastic part 512 is provided in the opening.
In one example, the second structure 52 includes: the elastic sealing device comprises a second pressing part 521, a second elastic part 522 and a second elastic sealing part 523, wherein the second pressing part 521 is connected with the second elastic part 522, one side of the second pressing part 521, far away from the second elastic part 522, faces the four-open ring 13, and at least part of area of the second elastic part 522 is located in the second elastic sealing part 523. When the second pressing part 521 is pressed by the medium, the second pressing part 521 presses the second elastic part 522, and the second elastic sealing part 523 expands under the action of the second elastic part 522, so that the medium is limited from moving from one side of the four-open ring 13 to one side of the first limiting part 11. It can be understood that when the second elastic part 522 is pressed and expanded, the second elastic part 522 may press the second elastic sealing part 523, so that the second elastic sealing part 523 is in close contact with the valve body 1, thereby achieving a sealing effect.
For example, the second pressing portion 521 may be a ring spring having a T shape, and the ring spring may be sleeved on the valve seat 2; the second elastic portion 522 may be a circular ring spring, and the ring spring may be sleeved on the valve seat 2; the second elastic sealing part 523 may be a sealing ring made of rubber, and one side of the sealing ring is opened, and a space capable of accommodating the second elastic part 522 is provided in the opening.
In one example, the first structure 51 and the second structure 52 may be fixedly connected. Illustratively, the first elastic sealing portion 513 in the first structure 51 and the second elastic sealing portion 523 in the second structure 52 may be fixedly connected (e.g., bonded, etc.).
In one example, a first clamping ring 6 is disposed between the valve seat 2 and the quad-ring 13. Therefore, the sealing performance of the bidirectional isobaric ultra-low temperature pure metal sealing butterfly valve is further improved.
In one example, a plurality of first through holes 131 are provided in the four-open ring 13. A first elastic member 1311 and a first blocking member 1312 are disposed in the first through hole 131, and the first elastic member 1311 is located between the valve seat 2 and the first blocking member 1312. For example, the valve seat 2 may be attached to the first stopper 11 in a natural state of the first elastic member 1311. When the valve seat 2 receives an external force, the valve seat 2 may move toward the four open rings 13, and the first elastic member 1311 may be pressed; when the valve seat 2 is no longer subjected to an external force, the first elastic member 1311 may push the valve seat 2 to move toward the first stopper 11. Therefore, through the design of the pre-tightening force of the reaction spring, the valve seat 2 is pushed by the pressure of the pipeline, and meanwhile, the pre-tightening force of the spring is assisted to realize displacement synchronization, so that bidirectional equivalent pressure bearing is ensured, and leakage is avoided.
Illustratively, the first elastic member 1311 may be a spring. The first blocking member 1312 may be a bolt, and a thread engaged with the bolt may be provided in the first through hole 131.
In one example, the end of the valve seat 2 adjacent to the first stopper 11 and in contact with the butterfly plate 4 is provided with an annular cutting edge 23. In addition, the end of the butterfly plate 4 contacting the valve seat 2 may be designed as a cambered surface. Therefore, the design of the annular cutting edge of the sealing surface on the valve seat 2 is combined with the cambered surface of the sealing surface on the butterfly plate 4, so that the butterfly plate 4 has wiping performance during opening and closing movement, a cleaning effect is achieved between the metal sealing surface of the annular cutting edge-shaped notch and the sealing surface on the butterfly plate 4, and substances such as crystals, dirt, fibers and the like attached to the sealing surface on the valve seat 2 are effectively scraped.
It can be understood that, in this application embodiment, with the split type design of valve body 1 and disk seat 2 to adopt four ring-opening 13 fixed disk seats 2, realized being convenient for two-way isobaric ultra-low temperature pure metal seal butterfly valve assembly and dismantlement from this, also can improve after-sale service efficiency simultaneously, change sealing member in good time and prolong valve service life, reduce and use engineering cost. In addition, in this application embodiment, valve rod 3 is a shaft design, and the eccentricity of two-way isobaric ultra-low temperature pure metal seal butterfly valve during operation that reduces that can be effective reasonable for the great reduction of moment of torsion of two-way isobaric ultra-low temperature pure metal seal butterfly valve does not have vulnerable part, and the streamlined design of butterfly plate has intensity height, and the area of overflowing is big, and the flow resistance is little, the energy can be saved. Due to the eccentric effect, the sealing surface of the butterfly plate and the movable valve seat is completely separated or closed in the opening and closing processes of the bidirectional isobaric ultra-low temperature pure metal sealing butterfly valve, friction-free rotation is achieved, the torque is small, the automatic compensation function is achieved, the service life of the valve is greatly prolonged, and the operation is light and handy.
It should be noted that, in the embodiment of the present application, each component may be assembled in a general assembly manner in the current industry, and a connection manner between general components may also be connected in a general connection manner in the current industry, which is not described herein again.
In summary, the bidirectional isobaric ultra-low temperature pure metal sealing butterfly valve provided by the embodiment of the application comprises a valve body, a valve seat, an energy storage type sealing ring, a four-open ring, a compression spring and the like, wherein the valve body and the valve seat are in a split design, so that the valve seat has a piston following compensation seal, the replacement is convenient, and the maintenance cost is reduced; meanwhile, an energy storage type sealing ring combined sealing structure is arranged between the valve body and the valve seat, the sealing material group, namely a high-temperature resistant material, is replaced, and therefore the ultra-low-temperature butterfly valve is converted into a high-temperature resistant two-way pressure butterfly valve. Because the butterfly valve has the characteristics of small volume and light weight, and the bidirectional isobaric design, the butterfly valve replaces other valve types, reduces the cost and saves the energy.
The bidirectional isobaric ultra-low temperature pure metal sealing butterfly valve provided by the application is described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are merely set forth to aid in understanding the core concepts of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.

Claims (10)

1. The utility model provides a two-way isobaric ultra-low temperature pure metal seal butterfly valve which characterized in that includes:
the valve comprises a valve body, wherein a first limiting part and a first annular groove are arranged on the valve body at intervals in the thickness direction of the valve body, and four open rings are arranged in the first annular groove;
the valve seat is positioned in the valve body and positioned between the first limiting part and the first annular groove, the first limiting part is used for limiting the valve seat to move towards a first direction, the four-open ring is used for limiting the valve seat to move towards a direction opposite to the first direction, an annular step is arranged on the outer wall of the valve seat, and a first cavity is formed between the annular step and the valve body;
a composite seal structure located in the first chamber, the composite seal structure comprising: first seal structure and second seal structure, first seal structure is located and is close to one side of first spacing portion, second seal structure is located and is close to one side of four ring-opening, first seal structure be used for restricting the medium by first spacing portion one side orientation four ring-opening one side is flowed, second seal structure be used for restricting the medium by four ring-opening one side orientation first spacing portion removes.
2. The bi-directional isobaric ultra-low temperature pure metal seal butterfly valve of claim 1, wherein said first structure comprises: the first pressing part is connected with the first elastic part, one side of the first pressing part, which is far away from the first elastic part, faces the first limiting part, and at least part of area on the first elastic part is positioned in the first elastic sealing part;
when the first extrusion part is extruded by a medium, the first extrusion part extrudes the first elastic part, and the first elastic sealing part expands under the action of the first elastic part, so that the medium is limited to flow from one side of the first limiting part to one side of the four open rings.
3. The bi-directional isobaric ultra-low temperature pure metal seal butterfly valve according to claim 1 or 2, characterized in that said second structure comprises: the second pressing part is connected with the second elastic part, one side of the second pressing part, which is far away from the second elastic part, faces the four open rings, and at least part of area on the second elastic part is located in the second elastic sealing part;
when the second extrusion part is extruded by a medium, the second extrusion part extrudes the second elastic part, and the second elastic sealing part expands under the action of the second elastic part, so that the medium is limited to move from one side of the four open rings to the first limiting part.
4. The bi-directional isobaric ultra-low temperature pure metal seal butterfly valve according to claim 1 or 2, characterized in that said first structure and said second structure are fixedly connected.
5. The bi-directional isobaric ultra-low temperature pure metal seal butterfly valve according to claim 1 or 2, characterized in that a first clamping ring is provided between said valve seat and said four open rings.
6. The bi-directional isobaric ultra-low temperature pure metal seal butterfly valve according to claim 1 or 2, characterized in that a plurality of first through holes are provided on said four open rings, wherein a first elastic member and a first block member are provided in said first through holes, said first elastic member being located between said valve seat and said first block member.
7. The bi-directional isobaric ultra-low temperature pure metal seal butterfly valve according to claim 1 or 2, characterized in that it further comprises:
the valve rod is positioned in the valve body and penetrates through the valve seat, and the valve rod extends from one end of the valve body to the other end of the valve body;
and the butterfly plate is fixedly arranged on the valve rod.
8. The bi-directional isobaric ultra-low temperature pure metal seal butterfly valve according to claim 7, characterized in that the end of the valve seat close to the first limiting part and in contact with the butterfly plate is provided with an annular cutting edge.
9. The bi-directional isobaric ultra-low temperature pure metal seal butterfly valve of claim 8, characterized in that the end of the butterfly plate in contact with the valve seat is of cambered design.
10. The bi-directional isobaric ultra-low temperature pure metal seal butterfly valve according to claim 1 or 2, characterized in that said first limit part is ring-shaped.
CN202111083348.8A 2021-09-16 2021-09-16 Bidirectional isobaric ultra-low temperature pure metal sealing butterfly valve Pending CN113803475A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111083348.8A CN113803475A (en) 2021-09-16 2021-09-16 Bidirectional isobaric ultra-low temperature pure metal sealing butterfly valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111083348.8A CN113803475A (en) 2021-09-16 2021-09-16 Bidirectional isobaric ultra-low temperature pure metal sealing butterfly valve

Publications (1)

Publication Number Publication Date
CN113803475A true CN113803475A (en) 2021-12-17

Family

ID=78895466

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111083348.8A Pending CN113803475A (en) 2021-09-16 2021-09-16 Bidirectional isobaric ultra-low temperature pure metal sealing butterfly valve

Country Status (1)

Country Link
CN (1) CN113803475A (en)

Similar Documents

Publication Publication Date Title
RU2368832C2 (en) Gas pulse creating valve
US4137933A (en) Control valve
US4251053A (en) Diaphragm device
CN104006183A (en) Valve seat used for floating ball valve
CN216519631U (en) Bidirectional isobaric ultra-low temperature pure metal sealing butterfly valve
CN102808972A (en) Multi-eccentric three-way half ball valve
CN113803475A (en) Bidirectional isobaric ultra-low temperature pure metal sealing butterfly valve
CN102563096A (en) Ultrahigh pressure differential tight cut-off regulating valve
WO2022127577A1 (en) Z-shaped liquid control valve without diaphragm, shaft, bushing, or spring
CN111946836A (en) Two-way sealing stop valve
CN210088010U (en) Novel axial-flow type stop valve
CN105757297A (en) Multifunctional self-operated check valve
CN210240601U (en) Durable type stop valve case
CN221683792U (en) Combined type noise elimination check valve
CN209385700U (en) A kind of high-performance two-way hard seal spiral valve
CN221569500U (en) Hard seal fixed ball valve
CN216768388U (en) Two-way hard seal ball valve plate that revolves
CN205715832U (en) Multi-functional self-operated type stop valve
US2046759A (en) Slow closing valve
CN221762652U (en) V-shaped wear-resistant ball valve capable of bearing pressure in double flow directions
CN111520499A (en) Ball valve
CN220416267U (en) Bidirectional sealing low-temperature butterfly valve
CN214743401U (en) Two eccentric elastic butterfly valve with new structure
CN219975393U (en) Sealing structure of butterfly valve
CN215950397U (en) Pneumatic fluorine-lined cutting-off regulating valve

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination