CN110715074A - Online maintenance low temperature ball valve and frock thereof - Google Patents
Online maintenance low temperature ball valve and frock thereof Download PDFInfo
- Publication number
- CN110715074A CN110715074A CN201910969798.3A CN201910969798A CN110715074A CN 110715074 A CN110715074 A CN 110715074A CN 201910969798 A CN201910969798 A CN 201910969798A CN 110715074 A CN110715074 A CN 110715074A
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- valve
- seat
- axial
- valve seat
- sealing
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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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/12—Covers for housings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
- F16K41/023—Spindle sealings with stuffing-box ; Sealing rings for spindles which only rotate, i.e. non-rising spindles
- F16K41/026—Spindle sealings with stuffing-box ; Sealing rings for spindles which only rotate, i.e. non-rising spindles for rotating 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention relates to the technical field of valves, in particular to an online maintenance low-temperature ball valve, which comprises: the valve comprises a valve body, a valve core, a valve seat assembly and a valve cover; the valve body comprises an axial channel for medium circulation and a radial channel perpendicular to the axial channel; the valve seat assembly is symmetrically arranged in the axial channel and comprises an elastic assembly and an axial sealing assembly, the axial sealing assembly comprises a valve seat supporting ring, the valve seat supporting ring is in contact with the spherical surface of the valve core, the contact surface of the valve seat supporting ring and the valve core is an arc-shaped surface, a sealing groove for fixing a sealing ring is formed in the arc-shaped surface, the valve seat supporting ring is movably arranged along the axial channel, the end part of the valve seat supporting ring protrudes out of one side wall of the radial channel, and a groove is formed in the protruding part. According to the invention, the valve seat supporting ring in the axial sealing assembly protrudes out of the radial channel, so that the valve seat supporting ring can be conveniently pulled away in two axial directions of the pipeline respectively by the tool to take out the valve core, and the normal conveying of a medium is not influenced.
Description
Technical Field
The invention relates to the technical field of valves, in particular to an online maintenance low-temperature ball valve and a tool thereof.
Background
The low-temperature ball valve is a valve suitable for low-temperature working conditions, is mainly used in low-temperature environments, is defined according to the design temperature of a transmission medium in the petrochemical industry, is generally called as a low-temperature valve when being applied to a medium temperature below-40 ℃, and is called as an ultralow-temperature valve when being applied to an ultralow-temperature working condition, the medium temperature is very low, a metal material can generate a low-temperature cold brittleness phenomenon, the strength and the hardness are greatly improved, and the plasticity and the toughness are reduced, so that the performance and the safety of the valve can be directly influenced.
In the prior art, in order to improve the performance of ultralow temperature ball valve, adopt sealed compensation structure to compensate the sealing performance of ball valve more, if the chinese utility model that bulletin number is CN206072405 discloses an ultralow temperature ball valve exclusively for 2017 4 months 5 days, adopts the spring to improve the elastic compensation ability of disk seat, makes the spheroid can reach sealed requirement. However, due to the extrusion force of the elastic material, when a problem occurs in the ball valve, the valve core is extruded by the sealing element pushed by the spring, the valve core cannot be taken out, and the ball valve can only be detached from the pipeline for maintenance.
In view of the above problems, the present inventors have made extensive research and innovation based on practical experience and professional knowledge in engineering application of such products for many years, and together with the application of theory, to create an on-line maintenance low-temperature ball valve and a tool thereof, so as to make the ball valve more practical.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the online maintenance of the low-temperature ball valve is realized.
In order to achieve the purpose, the technical scheme adopted by the invention on one hand is as follows: an online service cryogenic ball valve comprising: the valve comprises a valve body, a valve core, a valve seat assembly and a valve cover;
the valve body comprises an axial channel for medium circulation and a radial channel perpendicular to the axial channel, and the valve core is installed in the axial channel through the radial channel;
the valve seat component symmetry sets up in the axial passage, including elastic component and axial seal subassembly, elastic component does axial seal subassembly provides thrust, axial seal subassembly further includes the valve seat lock ring, the valve seat lock ring with the sphere contact of case, the valve seat lock ring with the face of case contact is the arcwall face, be provided with the seal groove that is used for the stationary seal circle on the arcwall face, the valve seat lock ring is followed axial passage is portable to be set up, just the tip protrusion of valve seat lock ring in a lateral wall of radial passage sets up, and is provided with the recess on the convex part.
Preferably, the axial seal assembly further comprises an axial channel seal seat, the axial channel seal seat is sleeved on the valve seat supporting ring, threads corresponding to the axial channel are arranged on the axial channel seal seat, and a graphite sealing gasket is arranged between the end part of the axial channel seal seat and the axial channel.
Preferably, the axial sealing assembly further comprises a corrugated pipe, the corrugated pipe is sleeved on the valve seat supporting ring, one end of the corrugated pipe is connected with the channel sealing seat, and the other end of the corrugated pipe is connected with the inner side end of the valve seat supporting ring.
Preferably, the valve seat support ring, the corrugated pipe and the axial channel sealing seat are welded into a whole, and a fixing auxiliary hole is formed in the end face of the axial channel sealing seat, so that the valve seat support ring, the corrugated pipe and the axial channel sealing seat can be conveniently and integrally screwed into the axial channel.
Preferably, elastic component includes spring support seat and disk seat spring, the both ends one end embedding of spring support seat extremely in the axial passageway, the other end embedding extremely in the axial seal subassembly, the spring support seat middle part is provided with the spring fixed part, there is the fixed chamber of spring along the circumference equipartition on the spring fixed part, disk seat spring one end embedding extremely in the fixed intracavity of spring, the other end with the inner wall connection of axial passageway.
Preferably, the valve cover and the radial channel are sealed by adopting a tongue-and-groove structure, and a graphite sealing gasket is arranged in the tongue-and-groove structure.
Preferably, the valve cover is lengthened to protect the packing and the actuating mechanism of the valve rod.
The invention provides a tool for maintaining a low-temperature ball valve on line, which comprises a supporting seat, a pull rod and a pull plate, wherein the supporting seat is fixed on a flange of a valve body for fixing a valve cover, the pull rod axially penetrates through the supporting seat along the valve body, one end of the pull rod is connected with the pull plate, and the pull plate extends into the valve body and is embedded into a groove of a valve seat supporting ring.
The invention has the beneficial effects that: according to the invention, through the arrangement of the elastic component and the valve seat component in the valve body, the sealing performance of the low-temperature ball valve under the low-temperature working condition is ensured, and meanwhile, through the arrangement of the valve seat supporting ring in the axial sealing component protruding out of the radial channel, the valve seat supporting ring can be conveniently pulled open towards two axial directions of the pipeline respectively through the tool, the valve seat component can be taken out for maintenance after the valve body is taken out, the normal conveying of a medium is not influenced, and the online maintenance of the ball valve is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of an on-line maintenance cryogenic ball valve according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1A according to an embodiment of the present invention;
FIG. 3 is a perspective view of a valve seat assembly and valve body according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of FIG. 3 in an embodiment of the present invention;
FIG. 5 is a perspective view of an alternative perspective of the valve seat assembly and valve body of an embodiment of the present invention;
FIG. 6 is a cross-sectional view of an embodiment of the present invention with an on-line service tool installed;
FIG. 7 is a top view of the embodiment of FIG. 6;
fig. 8 is a side view of the embodiment of fig. 6.
Reference numerals: 10-valve body, 11-axial channel, 12-radial channel, 20-valve core, 30-valve seat component, 31-elastic component, 32-axial sealing component, 40-valve cover, 51-supporting seat, 52-pull rod, 53-pull plate, 311-spring supporting seat, 312-valve seat spring, 321-valve seat supporting ring, 322-channel sealing seat, 323-corrugated pipe and 3211-groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the following paragraphs, different aspects of the embodiments are defined in more detail. Aspects so defined may be combined with any other aspect or aspects unless clearly indicated to the contrary. In particular, any feature considered to be preferred or advantageous may be combined with one or more other features considered to be preferred or advantageous.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", "inner" and "outer" and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the scope of the present invention.
The on-line service cryogenic ball valve as shown in fig. 1 and 2 comprises: the valve body 10, the valve core 20, the valve seat assembly 30 and the valve cover 40;
the valve body 10 comprises an axial channel 11 for medium circulation and a radial channel 12 perpendicular to the axial channel 11, and the valve core 20 is installed in the axial channel 11 through the radial channel 12;
the valve seat assembly 30 is symmetrically arranged in the axial channel 11 and comprises an elastic assembly 31 and an axial sealing assembly 32, the elastic assembly 31 provides thrust for the axial sealing assembly 32, the axial sealing assembly 32 further comprises a valve seat support ring 321, the valve seat support ring 321 is in spherical contact with the valve core 20, the contact surface of the valve seat support ring 321 and the valve core 20 is an arc surface, a sealing groove for fixing a sealing ring is arranged on the arc surface, the valve seat support ring 321 is movably arranged along the axial channel 11, the end of the valve seat support ring 321 protrudes out of one side wall of the radial channel 12, and a groove 3211 is formed in the protruding part. In the above embodiment, the valve core 20 keeps the sealing pressure by the thrust of the elastic component 31 to the axial sealing component 32, so that the sealing performance can be ensured under the low temperature environment, the axial movable arrangement of the valve seat support ring 321 and the arrangement of the groove 3211 enable the valve seat support ring 321 to pull the axial sealing component 32 to the two axial directions of the pipeline under the action of the tool, so that the valve core 20 is taken out from the valve body 10, after the valve core 20 is taken out, the valve seat component 30 can be taken out, the medium can be continuously circulated after the valve cover 40 is covered, the normal transportation of the medium is not affected, after the medium is repaired, the valve seat component 30 is installed in the axial channel 11, then the tool is used to install the valve core 20 in the two axial sealing components 32, the valve can recover the reliable sealing, and compared with the prior art, the sealing performance of the low temperature ball valve can be ensured, and the on-line maintenance of the low-temperature ball valve is realized, and the circulation of the medium is not influenced in the maintenance process, so that the service life of the ball valve is prolonged, and the continuity of medium conveying is improved.
Further, as shown in fig. 3 and 4, the axial sealing assembly 32 further includes an axial channel sealing seat 322, the axial channel sealing seat 322 is sleeved on the valve seat support ring 321, a thread corresponding to the axial channel is disposed on the axial channel sealing seat 322, and a graphite sealing gasket is disposed between an end of the axial channel sealing seat 322 and the axial channel 11. The axial channel sealing seat 322 is used to ensure that the medium in the axial channel flows through the valve seat support ring 321, so as to improve the sealing performance of the ball valve.
In the prior art, a lip-shaped sealing ring is mostly adopted for sealing a valve body, the lip-shaped sealing ring is also called a spring energy storage sealing ring, the cross section of the lip-shaped sealing ring is of an open structure, a spring is arranged in the lip-shaped sealing ring, the outer wall of the lip-shaped sealing ring is supported and pressed on a valve core through spring force at ordinary times, when pressure rises, the pressure in an inner groove of the lip-shaped sealing ring rises gradually, the lip-shaped sealing ring is better attached to the outer wall of a part, and finally the pressure and the pressure in a ventilation. However, the lip-shaped sealing ring is mostly made of non-metal materials, so that the non-metal materials cannot be continuously sealed after being melted at high temperature when a fire disaster occurs, and particularly, for flammable and explosive media, the safety performance of the lip-shaped sealing ring needs to be enhanced in a high-temperature environment. In order to solve the above problem, as shown in fig. 4, the axial sealing assembly 32 further includes a bellows 323, the bellows 323 is sleeved on the valve seat support ring 321, one end of the bellows 323 is connected to the channel seal seat 322, and the other end of the bellows 323 is connected to the inner end of the valve seat support ring 321. The bellows has the property of high temperature burning resistance, high pressure resistance can be realized through the multi-layer arrangement, in addition, the movement of the valve seat support ring 321 is limited through the arrangement of the bellows 323, the axial movement range of the bellows 323 is the axial movement range of the valve seat support ring 321 because one end of the bellows 323 is connected with the valve seat support ring 321 and the other end is connected with the channel seal seat 322, and the reliability of the axial seal assembly 32 is improved through the limitation of the bellows 323.
Further, as shown in fig. 3, the valve seat support ring 321, the bellows 323 and the axial passage seal seat 322 are welded into a whole, and a fixing auxiliary hole is formed in an end surface of the axial passage seal seat 322 to facilitate the whole to be screwed into the axial passage 11. The axial seal assembly 32 is integrally welded to facilitate the integral installation and removal of the axial seal assembly, and the maintenance steps are simplified. Through the arrangement of the corrugated pipe 323, compared with a lip-shaped sealing ring in the prior art, the high temperature resistance and high pressure resistance of the ball valve are improved, meanwhile, the corrugated pipe 323, the valve seat supporting ring 321 and the axial channel sealing seat 322 are welded into a whole, and the valve seat supporting ring 321 is allowed to move in the axial direction under the condition of being connected into a whole, so that the sealing of the ball valve main body is more reliable, and the online maintenance function of the ball valve is also realized.
As a preferred example of the above embodiment, as shown in fig. 5, the elastic component 31 includes a spring support 311 and a valve seat spring 312, one end of the two ends of the spring support 311 is embedded into the axial channel 11, the other end is embedded into the axial sealing component 32, a spring fixing portion is disposed in the middle of the spring support 311, spring fixing cavities are uniformly distributed on the spring fixing portion along the circumference, one end of the valve seat spring 312 is embedded into the spring fixing cavities, and the other end is connected to the inner wall of the axial channel 11. The valve seat spring 312 is circumferentially distributed, so that the stress of the whole axial sealing assembly 32 is uniform, and the axial sealing assembly 32 is integrally pushed through the spring support seat 311, so that the sealing effect of the ball valve is better.
Preferably, the valve cover 40 and the radial passage 12 are sealed by a tongue-and-groove structure, and a graphite gasket is arranged in the tongue-and-groove structure. Through calculating appropriate compression capacity for the graphite sealing gasket is difficult to the fracture in the tongue-and-groove loose, can assemble repeatedly and do not reveal, and the setting of tongue-and-groove structure has also improved the high temperature resistance and the low temperature resistance of valve body.
Preferably, the valve cover 40 is lengthened to protect the packing and actuator of the valve stem. The design of the lengthened valve cover ensures that the service temperature of the valve rod packing is far away from high-temperature and low-temperature environments, the actuating mechanism is protected under the conditions of high temperature and low temperature, the service life of the packing is prolonged, and the safe use of the actuator is ensured.
The tool for online maintenance of the low-temperature ball valve shown in fig. 6 to 8 includes a supporting seat 51, a pull rod 52 and a pull plate 53, the supporting seat 51 is fixed on a flange of the valve body for fixing the valve cover, the pull rod 52 axially penetrates through the supporting seat along the valve body, one end of the pull rod 52 is connected with the pull plate 53, and the pull plate 53 extends into the valve body and is embedded into the groove 3211 of the valve seat supporting ring 321. In the above embodiment, the supporting seat 51 is fixed by a fastener, and is detachably disposed, and the supporting seat 51 is fixed by using the original threaded hole on the valve body 10, so that the fixing is convenient and fast. The bottom of the pulling plate 53 is embedded into the groove 3211, the pulling rod 52 is a threaded column, penetrates through the supporting seat 51 and then is connected with the pulling plate 53 through a through hole, when the supporting seat 51 is fixed, the bottom of the pulling plate 53 is clamped in the groove 3211, and then the pulling plate 53 moves away from the valve core 20 by fastening the pulling rod 52 on the other side of the supporting seat 51 by using a nut; in this embodiment, the frock symmetry of online maintenance low temperature ball valve is provided with two sets ofly, and under the pulling of arm-tie 53, disk seat subassembly 30 separates with case 20 to take out case 20 from valve body 10 easily, then can take off online maintenance frock, take out disk seat subassembly 30 is rotatory again, cover the circulation that medium still can be guaranteed to the low temperature ball valve after valve gap 40, need not to dismantle the pipeline and can accomplish the maintenance to the ball valve.
The ball valve provided by the embodiment of the invention has the advantages that the bellows seal can resist high-temperature burning, the multilayer structure can resist high pressure at the same time, certain axial displacement can be realized while sealing, the main seal of the ball body is more reliable, the ultralow temperature resistance, the ultrahigh temperature resistance and the online maintenance can be realized, compared with the prior art, the ball valve has remarkable progress, and is worthy of popularization and application.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. An online service cryogenic ball valve, comprising: the valve comprises a valve body (10), a valve core (20), a valve seat assembly (30) and a valve cover (40);
the valve body (10) comprises an axial channel (11) for medium circulation and a radial channel (12) perpendicular to the axial channel (11), and the valve core (20) is installed in the axial channel (11) through the radial channel (12);
the valve seat assembly (30) is symmetrically arranged in the axial channel (11) and comprises an elastic assembly (31) and an axial sealing assembly (32), the elastic assembly (31) provides thrust for the axial sealing assembly (32), the axial sealing assembly (32) further comprises a valve seat supporting ring (321), the valve seat supporting ring (321) is in spherical contact with the valve core (20), the surface of the valve seat supporting ring (321) in contact with the valve core (20) is an arc surface, a sealing groove for fixing a sealing ring is formed in the arc surface, the valve seat supporting ring (321) is movably arranged along the axial channel (11), the end of the valve seat supporting ring (321) protrudes out of one side wall of the radial channel (12), and a groove (3211) is formed in the protruding part.
2. The on-line maintenance cryogenic ball valve of claim 1, wherein the axial sealing assembly (32) further comprises an axial channel sealing seat (322), the axial channel sealing seat (322) is sleeved on the valve seat support ring (321), a thread corresponding to the axial channel (11) is arranged on the axial channel sealing seat (322), and a graphite sealing gasket is arranged between the end of the axial channel sealing seat (322) and the axial channel (11).
3. An on-line service cryogenic ball valve according to claim 2, wherein the axial sealing assembly (32) further comprises a bellows (323), the bellows (323) is sleeved on the valve seat support ring (321), one end of the bellows (323) is connected with the channel seal seat (322), and the other end of the bellows (323) is connected with the inner end of the valve seat support ring (321).
4. An on-line maintenance cryogenic ball valve according to claim 3, characterized in that the valve seat support ring (321), the bellows (323) and the axial passage seal seat (322) are welded into a whole, and the end face of the axial passage seal seat (322) is provided with a fixing auxiliary hole for facilitating the integral screwing into the axial passage (11).
5. The on-line maintenance cryogenic ball valve of claim 1, wherein the elastic component (31) comprises a spring support seat (311) and a valve seat spring (312), one end of the spring support seat (311) is embedded into the axial channel (11), the other end of the spring support seat is embedded into the axial seal component (32), a spring fixing portion is arranged in the middle of the spring support seat (311), spring fixing cavities are uniformly distributed on the spring fixing portion along the circumference, one end of the valve seat spring (312) is embedded into the spring fixing cavities, and the other end of the valve seat spring is connected with the inner wall of the axial channel (11).
6. An on-line service cryogenic ball valve according to claim 1, wherein the valve cover (40) and the radial channel (12) are sealed by a tongue and groove structure, and a graphite sealing gasket is arranged in the tongue and groove structure.
7. An on-line service cryogenic ball valve according to claim 1, wherein the bonnet (40) is lengthened to protect the packing and actuators of the valve stem.
8. A tool for maintaining the on-line maintenance low-temperature ball valve according to any one of claims 1 to 7, wherein the tool comprises a supporting seat (51), a pull rod (52) and a pull plate (53), the supporting seat (51) is fixed on a flange of a valve body for fixing a valve cover, the pull rod (52) axially penetrates through the supporting seat along the valve body, one end of the pull rod (52) is connected with the pull plate (53), and the pull plate (53) extends into the valve body and is embedded into a groove (3211) of the valve seat supporting ring (321).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910969798.3A CN110715074A (en) | 2019-10-12 | 2019-10-12 | Online maintenance low temperature ball valve and frock thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910969798.3A CN110715074A (en) | 2019-10-12 | 2019-10-12 | Online maintenance low temperature ball valve and frock thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110715074A true CN110715074A (en) | 2020-01-21 |
Family
ID=69211509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910969798.3A Pending CN110715074A (en) | 2019-10-12 | 2019-10-12 | Online maintenance low temperature ball valve and frock thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110715074A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024041598A1 (en) * | 2022-08-25 | 2024-02-29 | 浙江三花汽车零部件有限公司 | Fluid control assembly and manufacturing method therefor, and valve assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4110080A1 (en) * | 1991-03-27 | 1992-10-01 | Draxler Ernst Dipl Ing Fh | Ball-cock with two=part housing - has spring components preloading plug- and spindle seals in housing |
| CN101285534A (en) * | 2008-02-05 | 2008-10-15 | 朱晓丰 | Sealing face wear-proof hard seal ball valve |
| CN102364177A (en) * | 2011-10-31 | 2012-02-29 | 浙江超达阀门股份有限公司 | Ball valve of corrugated pipe |
| CN102705525A (en) * | 2012-06-19 | 2012-10-03 | 苏州纽威阀门股份有限公司 | Top-entry low-temperature fixed ball valve |
| CN204387384U (en) * | 2014-12-30 | 2015-06-10 | 北京市阀门总厂(集团)有限公司 | Frock formula ball valve base structure |
-
2019
- 2019-10-12 CN CN201910969798.3A patent/CN110715074A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4110080A1 (en) * | 1991-03-27 | 1992-10-01 | Draxler Ernst Dipl Ing Fh | Ball-cock with two=part housing - has spring components preloading plug- and spindle seals in housing |
| CN101285534A (en) * | 2008-02-05 | 2008-10-15 | 朱晓丰 | Sealing face wear-proof hard seal ball valve |
| CN102364177A (en) * | 2011-10-31 | 2012-02-29 | 浙江超达阀门股份有限公司 | Ball valve of corrugated pipe |
| CN102705525A (en) * | 2012-06-19 | 2012-10-03 | 苏州纽威阀门股份有限公司 | Top-entry low-temperature fixed ball valve |
| CN204387384U (en) * | 2014-12-30 | 2015-06-10 | 北京市阀门总厂(集团)有限公司 | Frock formula ball valve base structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024041598A1 (en) * | 2022-08-25 | 2024-02-29 | 浙江三花汽车零部件有限公司 | Fluid control assembly and manufacturing method therefor, and valve assembly |
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Application publication date: 20200121 |
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