CN117307735A - Emergency cut-off valve for high-purity hydrogen chloride - Google Patents
Emergency cut-off valve for high-purity hydrogen chloride Download PDFInfo
- Publication number
- CN117307735A CN117307735A CN202311263337.7A CN202311263337A CN117307735A CN 117307735 A CN117307735 A CN 117307735A CN 202311263337 A CN202311263337 A CN 202311263337A CN 117307735 A CN117307735 A CN 117307735A
- Authority
- CN
- China
- Prior art keywords
- valve
- sealing
- cylinder
- air inlet
- hydrogen chloride
- 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
Links
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910000041 hydrogen chloride Inorganic materials 0.000 title claims abstract description 24
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 103
- 210000004907 gland Anatomy 0.000 claims abstract description 13
- 238000001125 extrusion Methods 0.000 claims description 39
- 229910000743 fusible alloy Inorganic materials 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 206010000369 Accident Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
- F16K17/383—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature the valve comprising fusible, softening or meltable elements, e.g. used as link, blocking element, seal, closure plug
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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
- F16K17/40—Safety valves; Equalising valves, e.g. pressure relief valves with a fracturing member, e.g. fracturing diaphragm, glass, fusible joint
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses an emergency cut-off valve for high-purity hydrogen chloride, which comprises a valve body, wherein the left end of the valve body is provided with an air inlet section, the right end of the valve body is provided with an air outlet section, a valve cavity communicated with the air inlet section and the air outlet section is arranged in the valve body, a valve cover is locked at the top end of the valve body by matching with a gland assembly screw, a cylinder body and a cylinder cover which is in threaded connection with the cylinder body are in threaded connection with the valve cover, and the emergency cut-off valve is connected with an emergency cut-off device through an air inlet on the valve cover. The cylinder body is internally provided with a cylinder assembly, the top of the cylinder assembly is provided with a cylinder rod through a piston, the piston is sleeved with a spring which is in butt joint with the top of the cylinder cover through a guide sleeve, one end of the cylinder rod, which is far away from the piston, freely penetrates through the cylinder assembly and penetrates through a valve cover to be connected with a corrugated pipe valve rod in a valve cavity through a connecting sleeve, the bottom end of the corrugated pipe valve rod is in sealing fit with the air inlet end of the valve cavity through a sealing assembly, the situation that local stress concentration between a valve clack sealing piece and a valve clack screw causes damage or sealing failure can be avoided, and the valve body can be cut off in an emergency in a fire disaster.
Description
Technical Field
The invention relates to the technical field of valves, in particular to an emergency cut-off valve for high-purity hydrogen chloride.
Background
Valves typically include a valve body and a flap disposed within the valve body that moves relative to the valve body to effect opening and closing of the valve. In order to ensure that the valve is able to effectively shut off the fluid path, the flap is typically provided with a seal which is in sufficient contact with the valve seat on the valve body to ensure sealing and thereby shut off the fluid line on either side of the valve seat.
The existing sealing element is arranged at the bottom of the corrugated pipe valve rod through a screw, in order to prevent a gas medium from passing through a gap between a sealing gasket and a valve clack screw, so that leakage is caused, the sealing element is required to be compressed and deformed at a position contacted with the valve clack screw, and the tightness of the valve clack is guaranteed. And is easily broken due to excessive deformation or excessive stress when the seal is pressed. In addition, in a fire accident, the power supply is suddenly cut off, or the control circuit fails, so that the valve power fails, and the valve cannot be opened or closed in an emergency, namely, the fluid medium in the valve body cannot be connected or cut off, and the accident cannot be controlled timely and effectively.
Disclosure of Invention
The invention aims to provide an emergency cut-off valve for high-purity hydrogen chloride, which can avoid the condition that local stress concentration between a valve clack sealing element and a valve clack screw causes damage or sealing failure, and can cut off a valve body in emergency in fire.
The technical scheme of the invention is realized as follows:
the utility model provides a high-purity emergency cut-off valve for hydrogen chloride, includes the valve body, the valve body left end is equipped with the section of admitting air, and the right-hand member is equipped with the section of giving vent to anger, be equipped with the valve pocket that is linked together with the section of admitting air and the section of giving vent to anger in the valve body, valve body top cooperation gland subassembly screw lock has the valve gap, threaded connection has cylinder block and the cylinder head of threaded connection on the cylinder block on the valve gap, set up the air inlet with cylinder block bottom intercommunication on the valve gap to connect emergency cut-off device through the air inlet.
The cylinder body is internally provided with a cylinder assembly, the top of the cylinder assembly is provided with a cylinder rod through a piston, the piston is sleeved with a spring which is abutted against the top of the cylinder cover through a guide sleeve, one end of the cylinder rod, which is far away from the piston, freely penetrates through the cylinder assembly and penetrates through a valve cover to be connected with a corrugated pipe valve rod in the valve cavity through a connecting sleeve, and the bottom end of the corrugated pipe valve rod is in sealing fit with the air inlet end of the valve cavity through a sealing assembly.
As a further description of the above technical solution:
the sealing assembly comprises a valve clack sealing element and a valve clack screw;
the valve clack sealing piece is embedded in a sealing groove formed in the bottom end of the corrugated pipe valve rod and is fixed to the bottom of the corrugated pipe valve rod through a valve clack screw, and the valve clack sealing piece can seal the air inlet end of the valve cavity.
As a further description of the above technical solution:
the valve clack screw is provided with a first extrusion surface and a second extrusion surface which are continuous;
the first extrusion surface is a horizontal plane, and an included angle a is formed between the second extrusion surface and the normal line of the plane where the valve clack screw is located.
As a further description of the above technical solution:
an extrusion groove which is in sealing fit with the first extrusion surface in the horizontal direction is formed in the axial direction of the valve clack sealing element; and
and the through hole is used for allowing the valve clack screw to pass through and is communicated with the extrusion groove.
As a further description of the above technical solution:
the valve clack sealing element is compressively deformed under the extrusion action of the first extrusion surface and the second extrusion surface.
As a further description of the above technical solution:
the inner wall of the sealing groove is provided with a plurality of caulking grooves along the height direction, and the valve clack sealing piece can be compressed and deformed into the caulking grooves during extrusion.
As a further description of the above technical solution:
the emergency cut-off device comprises an over-temperature pressure relief valve;
the air outlet of the over-temperature pressure relief valve is communicated with a hydrogen chloride air inlet through an air outlet pipe, and the air inlet of the over-temperature pressure relief valve is connected with a driving air source through an air inlet pipe;
the electromagnetic valve is arranged on the air inlet pipe and connected with the PLC; and
and the sensor is arranged on the cap and is used for monitoring the position change of the cylinder rod.
As a further description of the above technical solution:
the automatic sealing device is characterized in that a sealing valve plate is supported in the over-temperature pressure relief valve through a fusible alloy ring, a self-closing spring which is abutted to the top of the over-temperature pressure relief valve is arranged on the sealing valve plate, and a relief opening is formed in the top of the over-temperature pressure relief valve.
As a further description of the above technical solution:
the gland assembly comprises a gland in sealing fit with the bottom of the valve cover and a sealing ring in extrusion fit with a first sealing groove at the bottom of the gland.
As a further description of the above technical solution:
the top of the sealing ring is provided with a curved surface which is in extrusion sealing with the inner wall of the first sealing groove, and the bottom of the sealing ring is provided with a concave surface which is in extrusion sealing with the annular contour of the top of the valve body.
The beneficial effects of the invention are as follows:
(1) Be equipped with continuous first extrusion face and second extrusion face on the screw of valve clack, first extrusion face is the horizontal plane, and second extrusion face is formed with contained angle a with the planar normal of valve clack screw place, can increase the area of contact between valve clack sealing member and the valve clack screw through continuous first extrusion face and second extrusion face to reduce the problem that local stress concentrated between valve clack sealing member and the valve clack screw, thereby reduce when assembling or the gaseous circumstances that the valve clack sealing member leads to destroying seal failure because of local stress is too big in high pressure environment.
(2) A plurality of caulking grooves are formed in the inner wall of the sealing groove along the height direction of the sealing groove, so that the valve clack sealing piece can be compressed and deformed into the caulking grooves during extrusion. When the valve clack sealing element is assembled with the valve clack screw, the extruded valve clack sealing element can be extruded and deformed into the caulking groove, so that the sealing performance of the valve clack sealing element and the sealing groove is improved, and the sealing effect of the valve clack sealing element and the sealing groove can be improved in a high-pressure environment.
(3) When a fire disaster occurs, the fusible alloy ring in the over-temperature relief valve can be melted and falls to the bottom of the over-temperature relief valve, and the sealing valve plate drives the sealing valve plate to move downwards under the action of the self-closing spring to block the air outlet of the over-temperature relief valve. The cylinder assembly contracts to drive the piston to move downwards, the piston drives the cylinder rod and the corrugated pipe valve rod to move downwards synchronously, and the valve body can be closed under emergency through sealing fit between the sealing assembly at the bottom end of the corrugated pipe valve rod and the air inlet end of the valve cavity.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an emergency shut-off valve for high purity hydrogen chloride;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a schematic view of the structure of a valve stem;
fig. 4 is a schematic view of a flap screw.
FIG. 5 is a schematic view of a flap seal;
FIG. 6 is an enlarged view at B in FIG. 1;
FIG. 7 is a schematic view of a seal ring;
fig. 8 is a schematic view of a gland.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1-8, the emergency cut-off valve for high-purity hydrogen chloride according to the embodiment of the invention comprises a valve body 1, wherein an air inlet section 2 is arranged at the left end of the valve body 1, an air outlet section 3 is arranged at the right end of the valve body, a valve cavity 4 communicated with the air inlet section 2 and the air outlet section 3 is arranged in the valve body 1, a valve cover 6 is assembled at the top end of the valve body 1, a cylinder body 7 and a cylinder cover 8 which is in threaded connection with the cylinder body 7 are in threaded connection with the valve cover 6, and an air inlet 9 communicated with the bottom of the cylinder body 7 is arranged on the valve cover 6.
The cylinder body 7 is internally provided with a cylinder assembly 11, the top of the cylinder assembly 11 is provided with a cylinder rod 13 through a piston 12, the piston 12 is sleeved with a spring 15 which is abutted against the top of the cylinder cover 8 through a guide sleeve 14, one end of the cylinder rod 13, which is far away from the piston 12, freely penetrates through the cylinder assembly 11 and penetrates through a valve cover 6 to be connected with a corrugated pipe valve rod 17 in the valve cavity 4 through a connecting sleeve 16, and the bottom end of the corrugated pipe valve rod 17 is in sealing fit with the air inlet end of the valve cavity 4 through a sealing assembly 18.
When the device works, the air inlet 9 is externally connected with a driving air source, the air source is conveyed to the bottom of the cylinder body 7 through the air inlet 9, the piston 12 is driven to move upwards through the air cylinder assembly 11, the air cylinder rod 13 and the bellows valve rod 17 connected with the air cylinder rod 13 can be driven to move upwards synchronously when the piston 12 moves upwards, the air inlet end of the valve cavity 4 is opened, and the circulation of the hydrogen chloride gas from the air inlet section 2 to the air outlet section 3 through the valve cavity 4 is realized. When the driving air source is closed, the air cylinder assembly 11 drives the piston 12 to move downwards, the piston 12 can drive the air cylinder rod 13 and the bellows valve rod 17 connected with the air cylinder rod 13 to move downwards synchronously, and the sealing assembly 18 at the bottom end of the bellows valve rod 17 is in sealing fit with the air inlet end of the valve cavity 4, so that the valve body 1 is closed.
In one embodiment of the present invention, referring to FIGS. 2 and 3, the seal assembly 18 includes a flap seal 18-1 and a flap screw 18-2; the valve clack sealing element 18-1 is embedded in a sealing groove 19 formed in the bottom end of the corrugated pipe valve rod 17 and is fixed to the bottom of the corrugated pipe valve rod 17 through a valve clack screw 18-2, and the valve clack sealing element 18-1 can seal the air inlet end of the valve cavity 4.
To prevent the hydrogen chloride gas medium from leaking through the gap between the flap seal 18-1 and the flap screw 18-2. Referring to fig. 4, the valve flap screw 18-2 is provided with a continuous first pressing surface 18a and a continuous second pressing surface 18b; the first extrusion surface 18a is a horizontal plane, an included angle a is formed between the second extrusion surface 18b and the normal line of the plane where the valve clack screw 18-2 is located, the contact area between the valve clack seal 18-1 and the valve clack screw 18-2 can be increased through the continuous first extrusion surface 18a and the continuous second extrusion surface 18b, and the local stress concentration between the valve clack seal 18-1 and the valve clack screw 18-2 is reduced, so that the situation that the valve clack seal 18-1 is damaged and fails due to overlarge local stress in assembly or in a high-pressure environment is reduced.
In the scheme of the invention, referring to fig. 2 and 5, a pressing groove 18c which is in sealing fit with the first pressing surface 18a in the horizontal direction is formed in the axial direction of the valve clack sealing member 18-1; and a through hole 18d through which the flap screw 18-2 passes. The first extrusion surface 18a can be extruded and deformed in the axial direction of the valve clack seal 18-1 through the extrusion groove 18c, so that the valve clack seal 18-1 can be uniformly contacted with the inner wall of the sealing groove 19 and extruded and sealed, and leakage caused by uneven sealing or stress of the valve clack seal 18-1 during assembly or in a high-pressure environment is reduced.
In one embodiment of the invention, and with reference to FIG. 3, the valve flap seal 18-1 is further protected from damage failure due to local overstresses during assembly by excessive forces or by hydrogen chloride gas under high pressure conditions. A plurality of caulking grooves 20 are formed in the inner wall of the seal groove 19 in the height direction thereof, so that the flap seal 18-1 can be compressively deformed into the caulking grooves 20 upon pressing. When the valve clack sealing element 18-1 is assembled with the valve clack screw 18-2, the extruded valve clack sealing element 18-1 can be extruded and deformed into the caulking groove 20, so that the sealing performance of the valve clack sealing element 18-1 and the sealing groove 19 is further improved, and the damage and failure condition of the valve clack sealing element 18-1 caused by overlarge local stress during assembly or in a high-pressure environment is reduced.
The caulking groove 20 is opened along the depth direction of the sealing groove 19, so that the valve clack seal 18-1 can form a plurality of sealing surfaces and contact areas in the caulking groove 20 by extrusion, thereby improving the sealing effect.
In order to prevent the failure of the driving gas source of the valve body 1 in case of fire, the valve body 1 cannot be opened or closed in an emergency, which causes leakage of hydrogen chloride gas, an emergency shut-off device 10 is provided between the gas inlet 9 and the driving gas source.
Specifically, referring to fig. 1, the emergency cut-off device 10 includes an over-temperature relief valve 10a, wherein an air outlet of the over-temperature relief valve 10a is communicated with an air inlet 9 through an air outlet pipe, the air inlet of the over-temperature relief valve 10a is communicated with a driving air source through an air inlet pipe, an electromagnetic valve 10c is mounted on the air inlet pipe, and the electromagnetic valve 10c is connected with a PLC; and a sensor 10d, the sensor 10d being mounted on a cap 21, the cap 21 being fixedly mounted on the cylinder head 8 for monitoring the positional change of the cylinder rod 13 in real time.
The inside of the over-temperature relief valve 10a is supported with a sealing valve plate 10f through a fusible alloy ring 10e, the sealing valve plate 10f is provided with a self-closing spring 10g which is abutted with the top of the over-temperature relief valve 10a, and the top of the over-temperature relief valve 10a is provided with a relief port. When a fire disaster occurs, the fusible alloy ring 10e in the over-temperature relief valve 10a can be melted and falls to the bottom of the over-temperature relief valve 10a, the sealing valve plate 10f drives the sealing valve plate 10f to move downwards under the action of the self-closing spring 10g, and the air outlet of the over-temperature relief valve 10a is blocked. The piston 12 is driven to move downwards by contraction of the cylinder assembly 11, the cylinder rod 13 and the bellows valve rod 17 are driven to move downwards simultaneously by the piston 12, and the valve body 1 is closed by sealing fit between the sealing assembly 18 at the bottom end of the bellows valve rod 17 and the air inlet end of the valve cavity 4.
When the piston 12 moves downward and simultaneously drives the cylinder rod 13 and the bellows valve rod 17 to move downward synchronously, the sensor 10d can monitor the position change of the cylinder rod 13 and feed back signals to the PLC. The PLC closes the electromagnetic valve 10c and closes the driving air source, so that the situation that the driving air source power of the valve body 1 fails and the valve body 1 cannot be closed urgently is avoided.
In one embodiment of the present invention, referring to fig. 6 to 8, in order to be able to secure the tightness during the assembly of the valve body 1 with the valve cover 6 and the tightness of the valve chamber 4. The screw lock of the top end of the valve body 1 matched with the gland assembly 5 is provided with a valve cover 6, and the gland assembly 5 comprises a gland 5a in sealing fit with the bottom of the valve cover 6 and a sealing ring 5c in extrusion fit with a first sealing groove 5b at the bottom of the gland 5 a.
The top of the sealing ring 5c is provided with a curved surface m which is in extrusion sealing with the inner wall of the first sealing groove 5b, and the bottom of the sealing ring 5c is provided with a concave surface n which is in extrusion sealing with the annular contour of the top of the valve body 1. When the valve body 1 and the valve cover 6 are assembled through screws, an annular contour at the top end of the valve body 1 and the inner side surface of the concave surface n at the bottom of the sealing ring 5c form extrusion sealing points, and meanwhile, a sealing surface matched with the first sealing groove 5b is formed on the curved surface m at the top of the sealing ring 5c, so that the sealing effect between the valve body 1 and the valve cover 6 is improved, and hydrogen chloride gas leakage in the valve cavity 4 after the valve body 1 is closed is avoided.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (10)
1. The emergency cut-off valve for the high-purity hydrogen chloride comprises a valve body, wherein an air inlet section is arranged at the left end of the valve body, an air outlet section is arranged at the right end of the valve body, and a valve cavity communicated with the air inlet section and the air outlet section is arranged in the valve body;
the cylinder body is internally provided with a cylinder assembly, the top of the cylinder assembly is provided with a cylinder rod through a piston, the piston is sleeved with a spring which is abutted against the top of the cylinder cover through a guide sleeve, one end of the cylinder rod, which is far away from the piston, freely penetrates through the cylinder assembly and penetrates through a valve cover to be connected with a corrugated pipe valve rod in the valve cavity through a connecting sleeve, and the bottom end of the corrugated pipe valve rod is in sealing fit with the air inlet end of the valve cavity through a sealing assembly.
2. The emergency shut-off valve for high purity hydrogen chloride according to claim 1, wherein the seal assembly comprises a flap seal and a flap screw;
the valve clack sealing piece is embedded in a sealing groove formed in the bottom end of the corrugated pipe valve rod and is fixed to the bottom of the corrugated pipe valve rod through a valve clack screw, and the valve clack sealing piece can seal the air inlet end of the valve cavity.
3. The emergency cut-off valve for high purity hydrogen chloride according to claim 2, wherein the valve clack screw is provided with a continuous first extrusion surface and a continuous second extrusion surface;
the first extrusion surface is a horizontal plane, and an included angle a is formed between the second extrusion surface and the normal line of the plane where the valve clack screw is located.
4. The emergency shut-off valve for high purity hydrogen chloride according to claim 3, wherein the valve flap seal is axially provided with an extrusion groove in sealing engagement with the first extrusion surface in a horizontal direction; and
and the through hole is used for allowing the valve clack screw to pass through and is communicated with the extrusion groove.
5. The emergency shut-off valve for high purity hydrogen chloride according to claim 4, wherein said flap seal is compressively deformed by the pressing action of said first pressing surface and said second pressing surface.
6. The emergency shut-off valve for high purity hydrogen chloride according to claim 2, wherein the inner wall of the seal groove is provided with a plurality of caulking grooves along the height direction thereof, and the valve flap seal is compressively deformed into the caulking grooves when being pressed.
7. An emergency shut-off valve for high purity hydrogen chloride according to any of claims 1-6, wherein said emergency shut-off means comprises an over-temperature relief valve;
the air outlet of the over-temperature pressure relief valve is communicated with the air inlet through an air outlet pipe, and the air inlet of the over-temperature pressure relief valve is connected with a driving air source through an air inlet pipe;
the electromagnetic valve is arranged on the air inlet pipe and connected with the PLC; and
and the sensor is arranged on the cap and is used for monitoring the position change of the cylinder rod.
8. The emergency cut-off valve for high-purity hydrogen chloride according to claim 7, wherein a sealing valve plate is supported in the over-temperature pressure relief valve through a fusible alloy ring;
the self-closing spring is arranged on the sealing valve plate and is abutted to the top of the over-temperature pressure relief valve, and a relief port is formed in the top of the over-temperature pressure relief valve.
9. The emergency shut-off valve for high purity hydrogen chloride according to claim 1, wherein the gland assembly comprises a gland in sealing engagement with the bottom of the valve cap and a seal ring in pressing engagement with a first seal groove in the bottom of the gland.
10. The emergency shut-off valve for high purity hydrogen chloride according to claim 9, wherein the top of the sealing ring has a curved surface which is extrusion-sealed with the inner wall of the first sealing groove, and the bottom of the sealing ring has a concave surface which is extrusion-sealed with the annular contour of the top of the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311263337.7A CN117307735A (en) | 2023-09-27 | 2023-09-27 | Emergency cut-off valve for high-purity hydrogen chloride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311263337.7A CN117307735A (en) | 2023-09-27 | 2023-09-27 | Emergency cut-off valve for high-purity hydrogen chloride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117307735A true CN117307735A (en) | 2023-12-29 |
Family
ID=89280604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311263337.7A Pending CN117307735A (en) | 2023-09-27 | 2023-09-27 | Emergency cut-off valve for high-purity hydrogen chloride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117307735A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118009093A (en) * | 2024-04-07 | 2024-05-10 | 江苏金晟元特种阀门股份有限公司 | Special pneumatic bellows governing valve of chlorine |
-
2023
- 2023-09-27 CN CN202311263337.7A patent/CN117307735A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118009093A (en) * | 2024-04-07 | 2024-05-10 | 江苏金晟元特种阀门股份有限公司 | Special pneumatic bellows governing valve of chlorine |
| CN118009093B (en) * | 2024-04-07 | 2024-06-11 | 江苏金晟元特种阀门股份有限公司 | Special pneumatic bellows governing valve of chlorine |
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