CN113090768A - Pipe explosion shutoff valve - Google Patents
Pipe explosion shutoff valve Download PDFInfo
- Publication number
- CN113090768A CN113090768A CN202110469688.8A CN202110469688A CN113090768A CN 113090768 A CN113090768 A CN 113090768A CN 202110469688 A CN202110469688 A CN 202110469688A CN 113090768 A CN113090768 A CN 113090768A
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- Prior art keywords
- valve
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- piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—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
- F16K1/221—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 specially adapted operating means therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—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
- F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
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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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
- F16K37/0016—Mechanical means having a graduated scale
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention provides a pipe explosion shutoff valve, which comprises a valve body, a valve cavity, a water inlet, a water outlet and a control assembly, wherein the valve body is provided with a valve rod in a penetrating way, the valve rod penetrates through the valve cavity and is fixedly provided with a butterfly plate, the butterfly plate can close the water inlet and the water outlet, two ends of the valve rod are rotatably connected with the valve body, a piston is arranged in the control assembly, a first control cavity and a second control cavity are arranged at two sides of the piston, one end of the valve rod penetrates through the valve body and is vertically and movably connected with one end of a transmission assembly, the other end of the transmission assembly is fixedly connected with a transmission rod, when pipe explosion occurs, the pressure of a second cavity reaches the pressure and the pressure relief port is opened, the butterfly plate performs valve closing action, the valve rod rotates to drive a power transmission assembly and the transmission rod to enable the piston to move rightwards, one end of the, the invention has simple structure and higher sensing precision, avoids the false operation of the valve and has simple and visual operation.
Description
Technical Field
The invention belongs to the technical field of valves, relates to a shut-off valve, and particularly relates to a pipe burst shut-off valve.
Background
When a water pipeline, particularly a large pipeline, is accidentally burst, serious secondary disasters are caused, an upstream pipeline needs to be cut off quickly at the moment, damage is stopped in time, and if the pipeline is closed on site by depending on human complaints, serious consequences are caused, so that a valve needs to be developed, the pipeline is automatically and quickly cut off once burst occurs, and in the automatic cut-off process, the valve cannot be closed too quickly, so that a secondary valve closing water hammer is caused. In the prior art, a pipe burst cutting valve is adopted, a conventional butterfly valve is adopted, a hydraulic device is utilized, the flow velocity of a medium is sensed by an induction device, and when pipe burst is found, the hydraulic device drives the valve to close; the flow velocity sensed by the medium flow velocity sensing device is local flow velocity, the flow velocity is amplified by the mechanical device and then used as a control unit of the hydraulic system, the structure is very complex, the precision is not high after multiple times of amplification, and meanwhile, the maintenance of the hydraulic device is troublesome, so that the invention provides a structure for sensing and controlling the flow velocity by using the valve plate body to realize pipe burst shutoff
Disclosure of Invention
The invention provides a pipe explosion shutoff valve which adopts a swash plate type butterfly valve, and uses eccentric torque caused by the eccentricity of a butterfly plate as flow velocity induction, thereby avoiding the false operation of the valve, having lower failure rate and simpler and more intuitive operation.
In order to solve the technical problems, the invention adopts the technical scheme that: a pipe burst shutoff valve comprises a valve body, a valve cavity, a water inlet, a water outlet and a control assembly, wherein the valve body is provided with a valve rod in a penetrating way, the valve rod penetrates through the valve cavity and is fixedly provided with a butterfly plate, the butterfly plate can close the water inlet and the water outlet, two ends of the valve rod are rotatably connected with the valve body, a piston is arranged in the control assembly, a first control cavity and a second control cavity are arranged on two sides of the piston, one end of the valve rod penetrates through the valve body and is vertically and movably connected with one end of the transmission component, the other end of the transmission component is fixedly connected with the transmission rod, when the pipe explosion happens, when the pressure of the second cavity reaches the pressure and the pressure relief port is opened, the butterfly plate executes the valve closing action, the valve rod rotates to drive the power transmission assembly and the transmission rod to enable the piston to move rightwards, and a gas supply assembly is arranged at one end of the second control cavity, which is far away from the first control cavity, and the first control cavity is communicated with the second control cavity through a pressure release valve.
Further, at the initial stage of the control assembly, a preset valve opening pressure and a preset valve closing pressure are connected through a hand pump, and the preset valve closing pressure is greater than 50% of a normal working pressure value.
Further, the valve rod is arranged on the upper center of the valve cavity, and the butterfly plate is a swash plate type butterfly plate.
And the two pressure release valves are sequentially arranged at different positions in the front and the back of the second control cavity along the movement direction of the piston when the valve closing action is performed, and are provided with induction elastic parts.
Further, a control valve is arranged between the first control cavity and the pressure release valve, the control valve (10) is a needle valve, and the control valve is preset in opening degree.
Furthermore, the other end of the transmission rod penetrates through the first control cavity and is perpendicular to the bottom surface of the control assembly, the transmission rod (8) is fixedly connected with the piston, and the piston slides forwards and backwards in the control assembly and is in clearance fit with the control assembly.
Furthermore, all be equipped with the valve post on first relief valve and the second relief valve, be equipped with the scale that shows valve aperture size on the valve post.
Furthermore, the control assembly comprises a transmission assembly, a transmission rod, a control assembly cavity and a piston, the control assembly is fixedly connected to the outer side of the valve body, and two ends of the valve rod are connected with the valve body through bearings.
Furthermore, a sealing ring is arranged on the butterfly plate, and a limiting blocking piece is arranged on the valve body.
Furthermore, a convex block is arranged at the joint of the valve rod and the transmission assembly, and the convex block is arranged on the valve rod.
Compared with the prior art, the invention has the following advantages and positive effects.
1. A pipe explosion shutoff valve comprises a valve body, a valve cavity, a water inlet, a water outlet and a control assembly, wherein the valve body is provided with a valve rod in a penetrating manner, the valve rod penetrates through the valve cavity and is fixedly provided with a butterfly plate, the butterfly plate can close the water inlet and the water outlet, two ends of the valve rod are rotatably connected with the valve body through bearings to reduce friction resistance, a piston is arranged in the control assembly, two sides of the piston are provided with a first control cavity and a second control cavity, one end of the valve rod penetrates out of the valve body and is vertically and movably connected with one end of a transmission assembly, the other end of the transmission assembly is fixedly connected with a transmission rod, one end of the second control cavity, far away from the first control cavity, is provided with a gas supply assembly, the first control cavity is communicated with the second control cavity through a pressure relief valve, when pipe explosion occurs, the pressure of the second cavity reaches the pressure, and the valve closing action is executed, the valve plate body of the inclined plate type butterfly valve senses the flow velocity, the sensing precision is higher, and the misoperation of the valve is avoided.
2. Different from a conventional pipe explosion shut-off valve, the control device of the scheme only has one piston cylinder, the failure rate is lower, the set pressure and the valve closing speed are adjusted simply and visually, the two-stage pressure relief of the piston cylinder is adopted, the two-stage closing of the valve is realized, and the valve closing speed is accelerated.
3. The valve can be directly reset through the hand pump, the scale on the valve column can be accurately reset, the valve does not need to be overhauled externally, and the operation is simpler.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a squib shutoff valve of the present invention;
FIG. 2 is a schematic view of a valve plate structure of a burst pipe shut-off valve of the present invention;
FIG. 3 is a schematic diagram of a control assembly of a squib shutoff valve according to the present invention;
FIG. 4 is an enlarged view of the structure of part A of FIG. 3 of a control assembly of a squib shutoff valve according to the present invention
Reference numerals:
1. a valve body; 2. a valve stem; 3. a water inlet; 4. a water outlet; 5. a butterfly plate; 6. a piston; 7. a control component; 701. a first control chamber; 702. a second control chamber; 8. a transmission rod; 9. a pressure relief valve; 901. an elastic member; 902. a spool; 10. a control valve; 11. a gas supply assembly; 12. a transmission assembly; 13. bearing, 14, pipeline; 15. and (4) a bump.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The following detailed description of specific embodiments of the invention refers to the accompanying drawings.
As shown in fig. 1 to 4, a pipe burst shutoff valve comprises a valve body 1, a valve cavity, a water inlet 3, a water outlet 4, a control assembly 7, a valve rod 2 is arranged in the valve body 1 in a penetrating manner, a butterfly plate 5 is fixedly arranged in the valve rod 2 penetrating through the valve cavity, the butterfly plate 5 can close the water inlet 3 and the water outlet 4, two ends of the valve rod 2 are rotatably connected with the valve body 1, a piston 6 is arranged in the control assembly 7, a first control cavity 701 and a second control cavity 702 are arranged at two sides of the piston 6, one end of the valve rod 2 penetrates through the valve body 1 and is vertically movably connected with one end of a transmission assembly 12, the other end of the transmission assembly 12 is fixedly connected with a transmission rod 8, when pipe burst occurs, when the pressure of the second cavity 702 reaches the pressure to release opening, the butterfly plate 5 performs valve closing action, the valve rod rotates to drive the power transmission assembly 12 and the transmission rod 8 to enable the piston 6 to, the air supply assembly 11 can be connected to a hand pressure pump or an air pump, but is not limited to these two modes, and the valve resetting can be realized in various modes, and the first control chamber 701 is communicated with the second control chamber 702 through the pressure relief valve 9.
Preferably, the control unit 7 is initially switched in by the hand pump to a preset valve opening pressure and a valve closing pressure, the preset valve closing pressure being greater than 50% of the normal working pressure.
Preferably, the valve rod 2 is arranged at the upper center of the valve cavity, the butterfly plate 5 is a swash plate type butterfly plate 5, the induction precision is high, and the misoperation of the valve is avoided.
Preferably, the two pressure relief valves 9 are sequentially arranged at different positions in front of and behind the second control chamber 702 along the movement direction of the piston 6 when a valve closing action occurs, and sensing elastic parts are arranged on the two pressure relief valves 9.
Preferably, a control valve 10 is arranged between the first control chamber 702 and the pressure relief valve, the control valve 10 is a needle valve, and the control valve 10 has a preset opening degree.
Preferably, the other end of the transmission rod 8 penetrates through the first control cavity 701 and is arranged perpendicular to the bottom surface of the control assembly 7, the transmission rod 8 is fixedly connected with the piston 6, and the piston 6 slides back and forth in the control assembly 7 and is in clearance fit with the control assembly 7.
Preferably, all be equipped with the valve stem 902 on first relief valve 9 and the second relief valve 9, be equipped with the scale that shows valve aperture size on the valve stem 902, make things convenient for the valve to reset and observe.
Preferably, control assembly 7 comprises drive assembly 12, transfer line 6 control assembly cavity and piston 6, and control assembly 7 sets up in valve body outside fixed connection, and valve rod 2 both ends are connected through the bearing with valve body 2, reduce frictional resistance when the valve rod rotates, and control assembly peripheral hardware makes things convenient for the maintenance to detect.
Preferably, the butterfly plate 5 is provided with a sealing ring, the inner wall of the valve body 1 is provided with a limit stop piece, the valve is closed at a fixed position,
preferably, the connection between the valve stem 2 and the transmission assembly 12 is provided with a projection 16, which is arranged on the valve stem 2.
In the initial setting stage of the system, a piston is driven by a hand pump, a butterfly plate is lifted to the angle shown in the figure, a valve is in an open state, the water pressure of a piston cylinder props against a valve plate at the moment, when the hand pump is connected, a first-stage pressure relief opening and a second-stage pressure relief opening are locked, an induction spring of the pressure relief opening fails, the pressure relief opening is prevented from being relieved in advance, after the valve is fully opened, the pressure relief opening is unlocked, and the pressure relief opening is closed by the spring;
when the medium flows, the thrust of the flow velocity of the medium on the swash plate butterfly plate acts on the piston to squeeze water in the cylinder, the water pressure rises, and the water pressure is set to be the valve opening pressure of the first-stage pressure relief opening and the second-stage pressure relief opening;
when the pipeline is exploded, the flow velocity of the medium rises, the thrust of the medium to the butterfly plate rises, when the rising value reaches the pressure of the first-stage pressure relief opening and the second-stage pressure relief opening, the valve is closed when the first-stage pressure relief opening and the second-stage pressure relief opening are opened, the piston moves left, and the valve is closed; the first-stage closing speed of the valve can be controlled by adjusting the first-stage pressure relief port needle valve; when the valve is closed to 5% of opening, the piston moves to the first pressure relief opening, the first pressure relief opening is closed, only the second pressure relief opening discharges water at the moment, the valve is slowly closed, and the closing speed of the second stage of the valve can be controlled by adjusting a needle valve of the second stage pressure relief opening; when the valve is completely closed, the medium is cut off;
when the system is overhauled, the hand pump is connected again, the hand pump jacks the valve to the initial position, the valve resets, the pressure relief opening needs to be locked at the same time, and after the valve resets, the spring of the pressure relief opening is readjusted to the set position (scale).
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a pipe explosion shutoff valve which characterized in that: comprises a valve body (1), a valve cavity, a water inlet (3), a water outlet (4) and a control component (7), wherein the valve body (1) is provided with a valve rod (2) in a penetrating way, the valve rod (2) penetrates through the valve cavity and is fixedly provided with a butterfly plate (5), the butterfly plate (5) can close the water inlet (3) and the water outlet (4), two ends of the valve rod (2) are rotatably connected with the valve body (1),
a piston (6) is arranged in the control component (7), a first control cavity (701) and a second control cavity (702) are arranged on two sides of the piston (6),
one end of the valve rod (2) penetrates through the valve body (1) to be connected with one end of a transmission component (12), the other end of the transmission component (12) is connected with a transmission rod (8),
when pipe explosion occurs, when the pressure of the second cavity (702) reaches the pressure and the pressure relief port is opened, the butterfly plate (5) performs valve closing action, the valve rod rotates to drive the power transmission assembly (12) and the transmission rod (8) to enable the piston (6) to move rightwards,
the end of the second control cavity (702) far away from the first control cavity (701) is provided with a gas supply assembly (11),
the first control cavity (701) is communicated with the second control cavity (702) through a pressure relief valve (9).
2. A squib shutoff valve according to claim 1, wherein: and in the initial stage of the control component (7), a preset valve opening pressure and a preset valve closing pressure are connected through a hand pump, and the preset valve closing pressure is greater than 50% of the pressure value of normal work.
3. A squib shutoff valve according to claim 1, wherein: the valve rod (2) is arranged at the upper center of the valve cavity, and the butterfly plate (5) is a swash plate type butterfly plate (5).
4. A squib shutoff valve according to claim 1, wherein: the two pressure release valves (9) are arranged in the front and back different positions of the second control cavity (702) in sequence, and induction elastic parts are arranged on the two pressure release valves (9) along the movement direction of the piston (6) when the valve closing action occurs.
5. A squib shutoff valve according to claim 1, wherein: be equipped with control valve (10) between first control chamber (702) and the relief valve, control valve (10) are the needle valve, control valve (10) preset aperture.
6. A squib shutoff valve according to claim 1, wherein: the other end of the transmission rod (8) penetrates through the first control cavity (701) and is perpendicular to the bottom surface of the control assembly (7), the transmission rod (8) is fixedly connected with the piston (6), and the piston (6) slides forwards and backwards in the control assembly (7) and is in clearance fit with the control assembly and the piston.
7. A squib shutoff valve according to claim 1, wherein: all be equipped with valve post (902) on first relief valve (9) and second relief valve (9), be equipped with the scale that shows valve aperture size on valve post (902).
8. A squib shutoff valve according to claim 1, wherein: the control assembly (7) comprises a transmission assembly (12), a transmission rod (8), a control assembly cavity and a piston (6), the control assembly (7) is fixedly connected to the outer side of the valve body, and the two ends of the valve rod (2) are connected with the valve body (1) through bearings.
9. A squib shutoff valve according to claim 1, wherein: the butterfly plate (5) is provided with a sealing ring, and the inner wall of the valve body (1) is provided with a limiting blocking piece.
10. A squib shutoff valve according to claim 1, wherein: the connecting part of the valve rod (2) and the transmission component (12) is provided with a convex block (16), and the convex block is arranged on the valve rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110469688.8A CN113090768B (en) | 2021-04-28 | 2021-04-28 | Pipe explosion shutoff valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110469688.8A CN113090768B (en) | 2021-04-28 | 2021-04-28 | Pipe explosion shutoff valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113090768A true CN113090768A (en) | 2021-07-09 |
| CN113090768B CN113090768B (en) | 2022-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110469688.8A Active CN113090768B (en) | 2021-04-28 | 2021-04-28 | Pipe explosion shutoff valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113090768B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2457407Y (en) * | 2000-12-21 | 2001-10-31 | 启东阀门厂 | Intelligent emergency fast cut-off valve |
| CN105508717A (en) * | 2016-01-18 | 2016-04-20 | 株洲南方阀门股份有限公司 | Tube-burst emergency cut-off valve |
| CN205315784U (en) * | 2016-01-15 | 2016-06-15 | 合肥通用机械研究院 | Waterproof hammer butterfly check valve of mechanical type |
| CN112228780A (en) * | 2020-11-04 | 2021-01-15 | 博纳斯威阀门股份有限公司 | Tube explosion protection safety device |
-
2021
- 2021-04-28 CN CN202110469688.8A patent/CN113090768B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2457407Y (en) * | 2000-12-21 | 2001-10-31 | 启东阀门厂 | Intelligent emergency fast cut-off valve |
| CN205315784U (en) * | 2016-01-15 | 2016-06-15 | 合肥通用机械研究院 | Waterproof hammer butterfly check valve of mechanical type |
| CN105508717A (en) * | 2016-01-18 | 2016-04-20 | 株洲南方阀门股份有限公司 | Tube-burst emergency cut-off valve |
| CN112228780A (en) * | 2020-11-04 | 2021-01-15 | 博纳斯威阀门股份有限公司 | Tube explosion protection safety device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113090768B (en) | 2022-06-17 |
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