CN102563097A - Novel instrument diaphragm valve - Google Patents
Novel instrument diaphragm valve Download PDFInfo
- Publication number
- CN102563097A CN102563097A CN2012100527059A CN201210052705A CN102563097A CN 102563097 A CN102563097 A CN 102563097A CN 2012100527059 A CN2012100527059 A CN 2012100527059A CN 201210052705 A CN201210052705 A CN 201210052705A CN 102563097 A CN102563097 A CN 102563097A
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- valve rod
- valve
- steel ball
- lower valve
- packing
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Abstract
The invention relates to a novel instrument diaphragm valve for an industrial automation control pipeline system, which is mainly used for opening, closing and controlling liquid or gas in instrument pipelines with radioactive or poisonous, flammable and explosive media and the like of various flow rates, differential pressures, pressures, liquid levels and the like in a nuclear island of a nuclear power station. The novel instrument diaphragm valve comprises a valve body, a valve bonnet, valve rods and a valve spool, and is characterized in that a metal diaphragm is arranged at a connected position of an upper opening of the valve body and the valve bonnet, the upper valve rod and the lower valve rod are arranged above the diaphragm and are in rolling connection by the aid of a steel ball, packing seal structures are arranged on the lower valve rod and the upper valve rod respectively, a conical back seal structure is arranged between the lower valve rod and the valve cover, and the lower valve rod pushes the diaphragm and the valve spool to open and close without rotating and rolling. Shielding seal, opening back seal, upper packing seal and lower packing seal of the metal diaphragm are realized as a whole after the valve is closed and opened, so that the valve is safe, reliable, long in service life, easy in opening and closing, applicable to high temperature and high pressure, and wide in use range.
Description
Technical field
The present invention relates to the design and the manufacturing of valve; Be widely used in the industrial pipeline, particularly automatically in the instrumentation pipelines such as all kinds of flows in the control, differential pressure, pressure, liquid level poisonous, radioactivity and inflammable and explosive liquid or the keying of gas and the valve of control arranged.
Background technique
In the conventional valves structure; All adopt filler to prevent the sealing of external leakage; Owing between filler and valve rod, the valve gap inevitable kinetic friction factor is arranged; So structurally still exist the possibility of external leakage, and some occasion as: poisonous, inflammable, explosive, radioactivity etc. is arranged to safety, environment and healthy can working the mischief, be not allow external leakage to take place.China is at present general to adopt nonmetal membrane valve such as rubber, and it is simple in structure, seals singlely, only be suitable for the lower occasion of pressure and temperature, and working life is shorter, at HTHP and have under the situation of harsh conditions, can only rely on from foreign import.
Summary of the invention
Technical problem to be solved by this invention: be to provide a kind of valve rod and spool branch are arranged, combine, be applicable to the novel instrument membrane valve of pressure, temperature, medium wider range with metal diaphragm and filler.
Technological scheme of the present invention is:
A kind of lower valve rod does not rotate the novel instrument membrane valve of four sealing configurations; Form by valve body, valve gap, lower valve rod, upper valve rod, time filler, last filler, screw thread guide pin bushing, spool etc.; It is characterized in that: the position that joins at the suitable for reading and valve gap of valve body is provided with a metal diaphragm; The top of metal diaphragm is a lower valve rod, and the below of metal diaphragm is a spool; One end of lower valve rod is provided with the end face that is sphere shape, and it is provided with circular cone in the other direction and the valve gap inner sealing surface is complementary, and the other end is the hole, and the bottom in hole is the plane, is uniformly distributed with 3～6 apertures on the relevant position of its circumference; The lower end surface of upper valve rod is a circular arc, is inserted in the hole of lower valve rod, and the circular arc end face is contacted with the base plane in hole, has both helped active force and has evenly distributed at the center of lower valve rod, helps the power of reducing friction again; All pack in each aperture steel ball of same size; Steel ball places in the arc groove of upper valve rod bottom simultaneously; Screw in upper valve rod simultaneously in the screw thread guide pin bushing together with lower valve rod and the steel ball that is contained in the aperture; Lower valve rod is coupled together through steel ball and upper valve rod actively, form the active linkage structure of steel ball; The two ends of following filler have following Packing seat to place valve gap inner respectively; Upper valve rod that installs and lower valve rod are passed valve gap and following filler and following Packing seat to appropriate location; Locknut is threaded to the thread root of screw thread guide pin bushing; Screw in the screw thread guide pin bushing in upper valve rod and the valve gap, make its end face compress down Packing seat and following filler; Form sealing by seal washer with metal diaphragm is fastening between valve gap and the valve body; Screw and regulate the screw thread guide pin bushing, make it promote down Packing seat and be pressed on filler down between lower valve rod and the valve gap, form packing seal structure down, the locknut locking of screwing; Be provided with packing seal structure in the upper end of screw thread guide pin bushing; To go up Packing seat, last filler and packing press ring places the screw thread guide pin bushing inner respectively in order; Screw and regulate the active force of gland nut, make on it and seal sealing configuration in the formation between the filler and upper valve rod and screw thread guide pin bushing; At the top of upper valve rod handle installation or handwheel, rotatable handle or handwheel drive the upper valve rod spiral lifting, under the effect of the active linkage structure of steel ball, make lower valve rod not rotate straight line motion up and down, promote the open and close that metal diaphragm and spool are carried out valve; The outside of spool is provided with spring and impels spool to go up and down to reset.
Advantage of the present invention and beneficial effect are:
1, combined type valve gap design makes valve in various abominable applied environments, can both keep highly complete sealability and operating characteristics.
2, lower valve rod rotary lifting movement not in following filler, frictional force and fricting movement amount minimum, the sealability of valve is better, and the life-span is longer.
3, go up and to adopt the active linkage structure of steel ball between the lower valve rod, and steel ball rolls in the upper valve rod arc groove, improved motion antifriction degree, drop to the spin friction active force minimum, make the operation of valve free and relaxed.
4, because following packing seal in lower valve rod and valve inner position, completely cuts off with medium, help the lubricated influence that does not receive medium of all motive position such as screw thread and the active linkage structure of steel ball.
5, the worn-out sealing of screen of metal diaphragm and the back seal at twice packing seal structure and lower valve rod and valve gap position are up and down arranged, formed the quadruple sealing, quadruple is insured, sealability is more safe and reliable.
6, because the lower valve rod spherical end surface does not rotate, static promote the elevating movement of metal diaphragm spool, effectively protected metal diaphragm not rolled and wear and tear.
7, because last packing seal effect makes it with outside isolated, do not receive external environment influence.
8, prevent to become flexible behind the valve closing, be particularly suitable for being applied in the occasion of vibrations.
Description of drawings
Figure one is novel instrument membrane valve structural drawing.
Figure two is the active linkage structure cross-section profile of steel ball.
Figure three is the active linkage structure profile diagram of steel ball.
Among the figure: 1, handle or handwheel 2, gland nut 3, packing press ring 4, go up filler 5, go up Packing seat 6, screw thread guide pin bushing 7, locknut 8, upper valve rod 9, steel ball 10, Packing seat 11, filler 12, sealing surface 13, metal diaphragm 14, valve gap 15, spring 16, spool 17, valve body 18, seal washer 19, circular cone 20, lower valve rod 21, the end face 22 of sphere shape, the arc groove of upper valve rod bottom down down
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
A kind of lower valve rod does not rotate the novel instrument membrane valve of four sealing configurations; Form by valve body (17), valve gap (14), lower valve rod (20), upper valve rod (8), time filler (11), last filler (4), screw thread guide pin bushing (6), spool (16) etc.; It is characterized in that: the position that joins at the suitable for reading and valve gap (14) of valve body (17) is provided with a metal diaphragm (13); The top of metal diaphragm (13) is seal washer (18) and lower valve rod (20); The below of metal diaphragm (13) is spool (16), and the outside of spool (16) is spring (15); One end of lower valve rod (20) is provided with the end face (21) that is sphere shape, and it is provided with circular cone (19) in the other direction and valve gap (14) inner sealing surface (12) is complementary, and the other end is the hole, and the bottom in hole is the plane, is uniformly distributed with 3～6 apertures on the relevant position of its circumference; The lower end surface of upper valve rod (8) is a circular arc, is inserted in the hole of lower valve rod (20), and the circular arc end face is contacted with the base plane in hole, has both helped active force and has evenly distributed at the center of lower valve rod (20), helps the power of reducing friction again; All pack in each aperture steel ball (9) of same size; Steel ball (9) places in the arc groove (22) of upper valve rod (8) bottom simultaneously; Screw in upper valve rod (8) simultaneously in the screw thread guide pin bushing (6) together with lower valve rod (20) and the steel ball (9) that is contained in the aperture; Lower valve rod (20) is coupled together through steel ball (9) and upper valve rod (8) actively, form the active linkage structure of steel ball; The two ends of following filler (11) have following Packing seat (10) to place valve gap (14) inside respectively; Upper valve rod that installs (8) and lower valve rod (20) are passed valve gap (14) and following filler (11) and following Packing seat (10) to the appropriate location; Locknut (7) is threaded to the thread root of screw thread guide pin bushing (6); Screw in screw thread guide pin bushing (6) in upper valve rod (8) and the valve gap (14), make its end face compress down Packing seat (10) and following filler (11); Form sealing by seal washer (18) with metal diaphragm (13) is fastening between valve gap (14) and the valve body (17); Screw and regulate screw thread guide pin bushing (6), make it promote down Packing seat (10) and be pressed on filler (11) down between lower valve rod (20) and the valve gap (14), packing seal structure under forming is locknut (7) locking of screwing; Upper end at screw thread guide pin bushing (6) is provided with packing seal structure; To go up Packing seat (5), last filler (4) and packing press ring (3) and place screw thread guide pin bushing (6) inside respectively in order; Screw and regulate the active force of gland nut (2); Make sealing between filler on it (4) and upper valve rod (8) and the screw thread guide pin bushing (6), sealing configuration in the formation; Top handle installation or handwheel (1) at upper valve rod (8); Rotatable handle or handwheel (1); Drive upper valve rod (8) spiral lifting; Under the effect of the active linkage structure of steel ball (9), make lower valve rod (20) not rotate straight line motion up and down, promote the open and close that metal diaphragm (13) and spool (16) are carried out valve; The outside of spool (16) is provided with spring (15) and impels spool (16) to go up and down to reset.
Claims (2)
1. novel instrument membrane valve; This valve comprises valve body (17), valve gap (14), upper valve rod (8), lower valve rod (20) and spool (16); It is characterized in that: the position that joins at the suitable for reading and valve gap (14) of valve body (17) is provided with metal diaphragm (13); Metal diaphragm (13) top adopts steel ball (9) to realize that rolling is connected between lower valve rod (20) and the upper valve rod (8); Compress down packing seal structure under Packing seat (10) and following filler (11) realization by following filler (11) through screw thread guide pin bushing (6) between lower valve rod (20) and the valve gap (14); Compress Packing seat (5) and packing press ring (3) and go up packing seal structure in filler (4) realization through gland nut (2) between upper valve rod (8) and the screw thread guide pin bushing (6), rotation upper valve rod (8) drive lower valve rod (20) does not rotate promotion metal diaphragm (13) and spool (16) straight line moves up and down, and realizes opening and closing.
2. adopt steel ball to realize the connection of rolling according to the said lower valve rod of going up of claim 1, it is characterized in that: an end of lower valve rod (20) is spherical end surface (21), and it is provided with circular cone (19) in the other direction; The other end is the hole; The bottom in hole is the plane, is uniformly distributed with 3～6 apertures on the relevant position of its circumference, and the lower end surface of upper valve rod (8) is a circular arc; Be inserted in the hole of lower valve rod (20); The circular arc end face is contacted with the base plane in hole, the steel ball (9) of the same size of in each aperture, all packing into, steel ball (9) places in the arc groove (22) of upper valve rod (8) bottom simultaneously; Screw in upper valve rod (8) simultaneously in the screw thread guide pin bushing (6) together with lower valve rod (20) and the steel ball (9) that is contained in the aperture, lower valve rod (20) is coupled together through steel ball (9) and upper valve rod (8) actively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100527059A CN102563097A (en) | 2012-03-02 | 2012-03-02 | Novel instrument diaphragm valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100527059A CN102563097A (en) | 2012-03-02 | 2012-03-02 | Novel instrument diaphragm valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102563097A true CN102563097A (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100527059A Pending CN102563097A (en) | 2012-03-02 | 2012-03-02 | Novel instrument diaphragm valve |
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| Country | Link |
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| CN (1) | CN102563097A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5351936A (en) * | 1991-02-26 | 1994-10-04 | Fujikin Incorporated | Fluid controller |
| US20060060813A1 (en) * | 2004-09-22 | 2006-03-23 | Toshiaki Iwabuchi | Diaphragm valve |
| CN201071939Y (en) * | 2007-07-05 | 2008-06-11 | 江苏星河集团有限公司 | Instrument block valve with up and down double-thrust ball bearing structure |
| CN201443649U (en) * | 2008-10-13 | 2010-04-28 | 江苏星河集团有限公司 | Instrument block valve of dual seal structure with non-rotary lower valve stem |
| CN201651536U (en) * | 2010-03-25 | 2010-11-24 | 江苏星河集团有限公司 | Meter diaphragm stop valve |
| CN202501022U (en) * | 2012-03-02 | 2012-10-24 | 江苏星河集团有限公司 | Novel meter diaphragm valve |
-
2012
- 2012-03-02 CN CN2012100527059A patent/CN102563097A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5351936A (en) * | 1991-02-26 | 1994-10-04 | Fujikin Incorporated | Fluid controller |
| US20060060813A1 (en) * | 2004-09-22 | 2006-03-23 | Toshiaki Iwabuchi | Diaphragm valve |
| CN201071939Y (en) * | 2007-07-05 | 2008-06-11 | 江苏星河集团有限公司 | Instrument block valve with up and down double-thrust ball bearing structure |
| CN201443649U (en) * | 2008-10-13 | 2010-04-28 | 江苏星河集团有限公司 | Instrument block valve of dual seal structure with non-rotary lower valve stem |
| CN201651536U (en) * | 2010-03-25 | 2010-11-24 | 江苏星河集团有限公司 | Meter diaphragm stop valve |
| CN202501022U (en) * | 2012-03-02 | 2012-10-24 | 江苏星河集团有限公司 | Novel meter diaphragm valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Application publication date: 20120711 |