CN103591337A - Three-valve group of corrugated pipe instrument - Google Patents
Three-valve group of corrugated pipe instrument Download PDFInfo
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- CN103591337A CN103591337A CN201310602018.4A CN201310602018A CN103591337A CN 103591337 A CN103591337 A CN 103591337A CN 201310602018 A CN201310602018 A CN 201310602018A CN 103591337 A CN103591337 A CN 103591337A
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- valve
- valve rod
- internal thread
- rod
- hole
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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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
- F16K11/22—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members with an actuating member for each valve, e.g. interconnected to form multiple-way 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
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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
- F16K41/10—Spindle sealings with diaphragm, e.g. shaped as bellows or tube
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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 a three-valve group of a corrugated pipe instrument. The three-valve group of the corrugated pipe instrument comprises a valve body, a valve element, a lower valve rod, a metal washer, a metal corrugated pipe, a valve seat, a valve cover, fillings, a filling cushion, a steel ball, an upper valve rod, a sealing gasket, a filling ring, a sealing press pad, a press nut and the like. The valve body is a carrier of which three valves are integrated and formed by machining a cuboid. Three inner thread valve cavities matched with the valve seat are distributed at the two ends and the middle position of the valve body respectively. The valve element is directly welded to the metal corrugated pipe together with the lower valve rod and a flange and arranged among the valve body, the valve seat and the valve cover. The upper valve rod and the lower valve rod are movably connected through the steel ball. A multiple-insurance structure according to which the metal corrugated pipe of the valve group is sealed in a screen opening mode, the lower valve rod is filled with the fillings and sealed and the upper valve rod is filled with the fillings again and sealed is adopted and the three-valve group of the corrugated pipe instrument is a high-temperature high-pressure corrugated pipe valve group with the highly reliable sealing performance and the high safety performance.
Description
Technical field
The present invention relates to design and the manufacture of valve, be widely used in liquid in the instrumentation pipeline such as all kinds of flows, differential pressure, pressure of industrial automation control system or keying and the control gear of gas.
Background technique
At present, the instrument three valve groups of extensive use all realize sealing by filler, owing to there being motion between filler and valve rod, produce inevitable friction and wear factor, thereby structurally exist the possibility of leakage, and some medium (as: high temperature, high pressure, poisonous, inflammable, explosive, have radioactivity etc. to work the mischief to safety, environment and biological health) has not allowed to leak outside.The current bellows stop valve structure of China is single, can only be applied under the working condition of low pressure, low temperature and security medium, and working life is short, is not suitable for high temperature, high pressure and occasion dangerous or that may damage environment, life.
Summary of the invention
The object of the present invention is to provide a kind of bellows instrument three valve groups with the spacious sealing of the peripheral pressurized screen of metal bellows, spool is together with lower valve rod and flange is direct and metal bellows welds and is placed between valve body, valve seat and valve gap, upper valve rod and lower valve rod adopt that steel ball is active to be connected, the wavy metal tube panel of carrying out valve group opens sealing, lower valve rod packing seal and upper valve rod gland sealed multiple security structure again, is a kind of High Temperature High Pressure Bellows valves group with highly reliable sealing and high safety performance.
Technological scheme of the present invention is:
1, a kind of bellows instrument three valve groups, by valve body, spool, lower valve rod, metal washer, metal bellows, valve seat, valve gap, filler, Packing seat, steel ball, upper valve rod, sealing gasket, insertion ring, sealed pressure pad, the compositions such as gland nut, it is characterized in that: valve body is three integrated carriers of valve being processed into by a cuboid, three internal thread valve pocket B that coordinate with valve seat are distributed in two ends and the medium position of valve body, the perpendicular both sides end face of internal thread valve pocket B at valve body two ends have respectively into, outlet screw thread, import thread bottom hole A communicates with internal thread valve pocket B lower hole E, outlet thread bottom hole C communicates with internal thread valve pocket B, two ends internal thread valve pocket B base apertures F, one end communicates with middle part internal thread valve pocket B lower hole D, and the other end communicates with middle part internal thread valve pocket B, there is respectively a symmetrical mounting hole G internal thread valve pocket B both sides, middle part.
2, metal bellows is made by one deck to the equal thin metallic tubd of multilayer wall thickness, according to the height of valve pressure and temperature, determine respectively the different number of plies and wall thickness, its length, the pitch of waves, wave number and inner and outer diameter design according to technical parameters such as the flow of valve, latus rectum, switching paths; One end of lower valve rod coordinates with spool, and the other end is hole, and the bottom in hole is plane, uniform a plurality of apertures on the relevant position of its circumference, and the lower end surface of upper valve rod is circular arc, has arc-shaped groove on excircle; Metal bellows is enclosed within on lower valve rod, one end and lower valve rod bottom, the other end and flange welding sealing, spool and lower valve rod welding, upper valve rod is inserted in the hole of lower valve rod, circular arc end face is contacted with the base plane in hole, the steel ball that packs same size in each aperture into, simultaneously steel ball is placed in the arc-shaped groove of upper valve rod bottom, make upper valve rod and lower valve rod by steel ball active couple together; Be placed in valve seat, after flange has respectively packing ring and valve gap to closely cooperate up and down, lower locknut locking, filler and Packing seat are housed in valve gap, screw adjusting element its promotion Packing seat is pressed on filler between lower valve rod and valve gap, upper locknut is screwed to locking, form packing seal; On adjusting element top, pack sealing gasket, insertion ring, sealing clamping ring into, regulate and screw gland nut, form insertion ring and seal again; Load onto handle or handwheel, form valve group top assembly.
3, the valve seat of top assembly is loaded onto to metal washer and screw in respectively three internal thread valve pocket B of valve body fastening, between the internal thread valve pocket B oral area of valve seat, metal washer and valve body, seal; Rotatable handle or handwheel, upper valve rod spiral lifting, under the effect of the active linkage structure of steel ball, makes lower valve rod and spool not rotate upper and lower straight line motion, carries out and opens and closes.
4, three integrated each architectonicals of valve, communicate with both sides valve while opening middle valve, and while closing middle valve and both sides valve cuts off.
Advantage of the present invention and beneficial effect are:
1, the present invention adopts the spacious sealing of the peripheral pressurized metal screen of metal bellows and metal washer hard sealing structure; high temperature high voltage resistant sealability is excellent, reliable; there is again the protection of high temperature high voltage resistant filler secondary seal; preventing having realized double-sealing, dual fail-safe aspect external leakage, be specially adapted to high temperature, high pressure and the aspects such as health, safety, environment had to medium and the occasion of harm.
2, because metal bellows and lower packing seal all concentrate in lower valve rod one, during operated valve, lower valve rod does not rotate and moves up and down in filler and metal bellows, the filler greatly reducing and the friction between lower valve rod, improved working life and the operating characteristics of valve greatly.
3, between upper and lower valve rod, adopt the active linkage structure of steel ball, spin friction active force is dropped to minimum, make the operation of valve free and relaxed.
4, due to the seal action of upper insertion ring, make it with outside isolated, be not subject to external environment influence.
5, prevent that valve group from opening or closing loosening, be applicable to being applied in the occasion of vibrations.
Accompanying drawing explanation
Fig. 1 is bellows instrument three valve block structure sectional drawings;
Fig. 2 is that sectional structure chart is looked on the right side of Fig. 1.
In figure: 1, valve body 2, spool 3, lower valve rod 4, metal washer 5, metal bellows 6, valve seat 7, lower locknut 8, valve gap 9, packing ring 10, flange 11, packing ring 12, Packing seat 13, filler 14, steel ball 15, adjusting element 16, upper locknut 17, sealing gasket 18, insertion ring 19, sealing clamping ring 20, gland nut 21, upper valve rod 22, handle or handwheel 23, socket head screw A, import thread bottom hole B, internal thread valve pocket C, outlet thread bottom hole D, middle part internal thread valve pocket lower hole E, internal thread valve pocket lower hole F, internal thread valve pocket base apertures G, mounting hole.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
1, a kind of bellows instrument three valve groups, by valve body (1), spool (2), lower valve rod (3), metal washer (4), metal bellows (5), valve seat (6), valve gap (8), filler (13), Packing seat (12), steel ball (14), upper valve rod (21), sealing gasket (17), insertion ring (18), sealed pressure pad (19), the compositions such as gland nut (20), it is characterized in that: valve body (1) is three integrated carriers of valve being processed into by a cuboid, three internal thread valve pockets (B) that coordinate with valve seat (6) are distributed in two ends and the medium position of valve body (1), the perpendicular both sides end face of internal thread valve pocket (B) at valve body (1) two ends have respectively into, outlet screw thread, import thread bottom hole (A) communicates with internal thread valve pocket lower hole (E), outlet thread bottom hole (C) communicates with internal thread valve pocket (B), two ends internal thread valve pocket base apertures (F), one end communicates with middle part internal thread valve pocket lower hole (D), and the other end communicates with middle part internal thread valve pocket (B), there is respectively a symmetrical mounting hole (G) internal thread valve pocket (B) both sides, middle part.
2, metal bellows (5) is made by one deck to the equal thin metallic tubd of multilayer wall thickness, according to the height of valve pressure and temperature, determine respectively the different number of plies and wall thickness, its length, the pitch of waves, wave number and inner and outer diameter design according to technical parameters such as the flow of valve, latus rectum, switching paths; One end of lower valve rod (3) coordinates with spool (2), and the other end is hole, and the bottom in hole is plane, uniform a plurality of apertures on the relevant position of its circumference, and the lower end surface of upper valve rod (21) is circular arc, has arc-shaped groove on excircle; Metal bellows (5) is enclosed within on lower valve rod (3), one end and lower valve rod (3) bottom, the other end and flange (10) welded seal, spool (2) and lower valve rod (3) welding, upper valve rod (21) is inserted in the hole of lower valve rod (3), circular arc end face is contacted with the base plane in hole, the steel ball (14) that packs same size in each aperture into, simultaneously steel ball (14) is placed in the arc-shaped groove of upper valve rod (21) bottom, make upper valve rod (21) and lower valve rod (3) by steel ball (14) active couple together; Be placed in valve seat (6), flange (10) after having respectively up and down packing ring (9) (11) and valve gap (8) to closely cooperate locks lower locknut (7), filler (13) and Packing seat (12) are housed in valve gap (8), screwing adjusting element (15) makes its promotion Packing seat (12) that filler (13) is pressed between lower valve rod (3) and valve gap (8), upper locknut (16) is screwed to locking, form filler (13) sealing; On adjusting element (15) top, pack sealing gasket (17), insertion ring (18), sealing clamping ring (19) into, regulate and screw gland nut (20), form insertion ring (18) and seal again; Load onto handle or handwheel (22), form valve group top assembly.
3, the valve seat of top assembly (6) is loaded onto to metal washer (4) and screw in respectively three internal thread valve pockets (B) of valve body (1) fastening, between the internal thread valve pocket B oral area of valve seat (6), metal washer (4) and valve body (1), seal; Rotatable handle or handwheel (22), upper valve rod (21) spiral lifting, under the effect of the active linkage structure of steel ball (14), makes lower valve rod (3) and spool (2) not rotate upper and lower straight line motion, carries out and opens and closes.
4, three integrated each architectonicals of valve, communicate with both sides valve while opening middle valve, and while closing middle valve and both sides valve cuts off.
Claims (4)
1. bellows instrument three valve groups, by valve body (1), spool (2), lower valve rod (3), metal washer (4), metal bellows (5), valve seat (6), valve gap (8), filler (13), Packing seat (12), steel ball (14), upper valve rod (21), sealing gasket (17), insertion ring (18), sealed pressure pad (19), the compositions such as gland nut (20), it is characterized in that: valve body (1) is three integrated carriers of valve being processed into by a cuboid, three internal thread valve pockets (B) that coordinate with valve seat (6) are distributed in two ends and the medium position of valve body (1), the perpendicular both sides end face of internal thread valve pocket (B) at valve body (1) two ends have respectively into, outlet screw thread, import thread bottom hole (A) communicates with internal thread valve pocket lower hole (E), outlet thread bottom hole (C) communicates with internal thread valve pocket (B), two ends internal thread valve pocket base apertures (F), one end communicates with middle part internal thread valve pocket lower hole (D), and the other end communicates with middle part internal thread valve pocket (B), there is respectively a symmetrical mounting hole (G) internal thread valve pocket (B) both sides, middle part.
2. according to a kind of bellows instrument three valve groups described in claim 1, it is characterized in that: metal bellows (5) is made by one deck to the equal thin metallic tubd of multilayer wall thickness, one end of lower valve rod (3) coordinates with spool (2), the other end is hole, the bottom in hole is plane, uniform a plurality of apertures on the relevant position of its circumference, the lower end surface of upper valve rod (21) is circular arc, has arc-shaped groove on excircle; Metal bellows (5) is enclosed within on lower valve rod (3), one end and lower valve rod (3) bottom, the other end and flange (10) welded seal, spool (2) and lower valve rod (3) welding, upper valve rod (21) is inserted in the hole of lower valve rod (3), circular arc end face is contacted with the base plane in hole, the steel ball (14) that packs same size in each aperture into, simultaneously steel ball (14) is placed in the arc-shaped groove of upper valve rod (21) bottom, make upper valve rod (21) and lower valve rod (3) by steel ball (14) active couple together; Be placed in valve seat (6), flange (10) after having respectively up and down packing ring (9) (11) and valve gap (8) to closely cooperate locks lower locknut (7), filler (13) and Packing seat (12) are housed in valve gap (8), screwing adjusting element (15) makes its promotion Packing seat (12) that filler (13) is pressed between lower valve rod (3) and valve gap (8), upper locknut (16) is screwed to locking, form filler (13) sealing; On adjusting element (15) top, pack sealing gasket (17), insertion ring (18), sealing clamping ring (19) into, regulate and screw gland nut (20), form insertion ring (18) and seal again; Load onto handle or handwheel (22), form valve group top assembly.
3. according to a kind of bellows instrument three valve groups described in claim 1, it is characterized in that: the valve seat of top assembly (6) is loaded onto to metal washer (4) and screw in respectively three internal thread valve pockets (B) of valve body (1) fastening, between the internal thread valve pocket B oral area of valve seat (6), metal washer (4) and valve body (1), seal; Rotatable handle or handwheel (22), upper valve rod (21) spiral lifting, under the effect of the active linkage structure of steel ball (14), makes lower valve rod (3) and spool (2) not rotate upper and lower straight line motion, carries out and opens and closes.
4. according to a kind of bellows instrument three valve groups described in claim 1, it is characterized in that: three integrated each architectonicals of valve, while opening middle valve, communicate with both sides valve, while closing middle valve and both sides valve cuts off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310602018.4A CN103591337A (en) | 2013-11-25 | 2013-11-25 | Three-valve group of corrugated pipe instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310602018.4A CN103591337A (en) | 2013-11-25 | 2013-11-25 | Three-valve group of corrugated pipe instrument |
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| Publication Number | Publication Date |
|---|---|
| CN103591337A true CN103591337A (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310602018.4A Pending CN103591337A (en) | 2013-11-25 | 2013-11-25 | Three-valve group of corrugated pipe instrument |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315194A (en) * | 2014-09-25 | 2015-01-28 | 江苏华太电力仪表有限公司 | Special low-temperature liquid level valve bank |
| CN105782558A (en) * | 2016-05-06 | 2016-07-20 | 上海沪航阀门有限公司 | Multiple and double-layer sealing packing gland device and using method |
| CN107044564A (en) * | 2017-03-28 | 2017-08-15 | 江苏星河阀门有限公司 | The valve group of HTHP bellows five |
| CN109442066A (en) * | 2018-12-30 | 2019-03-08 | 徐州阿卡控制阀门有限公司 | Combined multi-channel control valve |
| CN113864666A (en) * | 2021-10-18 | 2021-12-31 | 深圳市凯豪达氢能源有限公司 | Cut off stop valve fast |
| CN115013564A (en) * | 2022-05-13 | 2022-09-06 | 中国石油化工股份有限公司 | An industrial pipeline orifice plate pressure taking integrated valve group |
| CN115013564B (en) * | 2022-05-13 | 2025-02-11 | 中国石油化工股份有限公司 | An integrated valve group for taking pressure from orifice plate of industrial pipeline |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86104560A (en) * | 1986-07-07 | 1988-01-27 | 浙江省嵊县温控设备厂 | Four-way check valve |
| EP0984216A2 (en) * | 1998-09-03 | 2000-03-08 | Präzisionsarmaturen Ostfalenpark Barleben GmbH | Pipe closure device |
| CN2470616Y (en) * | 2001-02-26 | 2002-01-09 | 郑西华 | Single-valve of meter |
| CN101363556A (en) * | 2008-10-13 | 2009-02-11 | 江苏星河集团有限公司 | Instrument block valve of double sealing structure with lower valve spindle not rotating |
| CN102937466A (en) * | 2012-11-23 | 2013-02-20 | 项家从 | Method for eliminating measurement additional error of three-valve manifold and expanded three-valve manifold |
| CN103244696A (en) * | 2013-05-17 | 2013-08-14 | 江苏星河阀门有限公司 | External-pressure type bellows globe valve with non-rotating valve rod |
-
2013
- 2013-11-25 CN CN201310602018.4A patent/CN103591337A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86104560A (en) * | 1986-07-07 | 1988-01-27 | 浙江省嵊县温控设备厂 | Four-way check valve |
| EP0984216A2 (en) * | 1998-09-03 | 2000-03-08 | Präzisionsarmaturen Ostfalenpark Barleben GmbH | Pipe closure device |
| CN2470616Y (en) * | 2001-02-26 | 2002-01-09 | 郑西华 | Single-valve of meter |
| CN101363556A (en) * | 2008-10-13 | 2009-02-11 | 江苏星河集团有限公司 | Instrument block valve of double sealing structure with lower valve spindle not rotating |
| CN102937466A (en) * | 2012-11-23 | 2013-02-20 | 项家从 | Method for eliminating measurement additional error of three-valve manifold and expanded three-valve manifold |
| CN103244696A (en) * | 2013-05-17 | 2013-08-14 | 江苏星河阀门有限公司 | External-pressure type bellows globe valve with non-rotating valve rod |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315194A (en) * | 2014-09-25 | 2015-01-28 | 江苏华太电力仪表有限公司 | Special low-temperature liquid level valve bank |
| CN105782558A (en) * | 2016-05-06 | 2016-07-20 | 上海沪航阀门有限公司 | Multiple and double-layer sealing packing gland device and using method |
| CN107044564A (en) * | 2017-03-28 | 2017-08-15 | 江苏星河阀门有限公司 | The valve group of HTHP bellows five |
| CN109442066A (en) * | 2018-12-30 | 2019-03-08 | 徐州阿卡控制阀门有限公司 | Combined multi-channel control valve |
| CN109442066B (en) * | 2018-12-30 | 2024-03-19 | 徐州阿卡控制阀门有限公司 | Combined multi-channel control valve |
| CN113864666A (en) * | 2021-10-18 | 2021-12-31 | 深圳市凯豪达氢能源有限公司 | Cut off stop valve fast |
| CN113864666B (en) * | 2021-10-18 | 2023-11-28 | 深圳市凯豪达氢能源有限公司 | Quick cut-off stop valve |
| CN115013564A (en) * | 2022-05-13 | 2022-09-06 | 中国石油化工股份有限公司 | An industrial pipeline orifice plate pressure taking integrated valve group |
| CN115013564B (en) * | 2022-05-13 | 2025-02-11 | 中国石油化工股份有限公司 | An integrated valve group for taking pressure from orifice plate of industrial pipeline |
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Application publication date: 20140219 |