CN201215218Y - High-temperature high-pressure bellows instrument block valve - Google Patents
High-temperature high-pressure bellows instrument block valve Download PDFInfo
- Publication number
- CN201215218Y CN201215218Y CNU2008200397571U CN200820039757U CN201215218Y CN 201215218 Y CN201215218 Y CN 201215218Y CN U2008200397571 U CNU2008200397571 U CN U2008200397571U CN 200820039757 U CN200820039757 U CN 200820039757U CN 201215218 Y CN201215218 Y CN 201215218Y
- Authority
- CN
- China
- Prior art keywords
- valve
- flange
- valve stem
- valve rod
- lower valve
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model provides a high-temperature and high-pressure corrugated pipe instrument stop valve which mainly utilizes a special metal corrugated pipe to seal, and is widely applied to pipelines of all types of instruments. The corrugated pipe instrument stop valve is characterized in that the special metal corrugated pipe is sleeved on a lower valve stem, one end of the special metal corrugated pipe is in welding sealing with a boss and a valve spool at the lower portion of the lower valve stem, the other end is in welding sealing with a flange to form a corrugated pipe valve spool component which is disposed in a valve body, metal washers are respectively arranged on and below the flange, a packing box and another metal washer are mounted above the flange, a lower valve cover is in thread engagement with the valve body via fastening, the lower valve stem is directly inserted inside the packing box, two packing pads are placed between the inside of the packing box and the lower valve stem respectively from the upper end and the lower end of a packing, the lower valve stem is connected with an upper valve stem through a connecting nut which is provided with a single steel ball center thrust rolling bearing structure, an open type upper valve cover is in threaded engagement and is fastened with the lower valve cover, a supporting seat is screwed in the upper valve stem and is engaged and fastened with the upper valve cover, a handle is mounted on the top portion of the upper valve stem, and the rotating handle drives the upper valve stem to open and close the valve.
Description
Technical field
The utility model relates to industrial automation control system, the liquid in all kinds of instrument (flow, differential pressure, pressure, the liquid level etc.) pipeline or the keying and the control gear of gas.
Background technique
The structure of the instrument block valve of extensive use is all carried out the external leakage sealing by last filler, because inevitable kinetic friction factor between filler and valve rod and the valve gap, so exist the possibility of leakage on the structure, and some medium (as: high temperature, high pressure, poisonous, inflammable, explosive, radioactivity etc. is arranged to safety, environment and healthy working the mischief) does not allow and leaks outside.
The bellows stop valve of the present larger caliber of China is many, but small-bore bellows instrument block valve structure is single, suitable pressure is lower, also have in some essential projects and adopt membrane valve, but can only be applied under the not high working condition of low pressure or temperature, and working life is short, particularly can not be applicable under the high-temperature and high-pressure conditions.
Summary of the invention
It is a kind of with the spacious sealing of the peripheral pressurized metal screen of special-purpose metal bellows that the purpose of this utility model is to provide; lower valve rod directly inserts in the stuffing box; carry out the incorporate filler secondary seal protection of lower valve rod; rotation inhibiting between flange and the valve rod; single steel ball center thrust ball bearing transmission, the high temperature high pressure bellows instrument block valve of open type bonnet radiating structure.
The technical solution of the utility model is:
1, a kind of special-purpose metal bellows, by four layers of seamless steel pipe to six layers, every layer wall thickness 0.1mm to 0.25mm, determine the different number of plies and wall thickness respectively according to the height of valve pressure and temperature, 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; The special-purpose metal bellows is enclosed within on the lower valve rod, the lower boss of its end and lower valve rod, the other end and flange welded seal, and spool and lower valve rod welding constitute the Bellows valves core assembly; Be placed in the valve body, its flange has metal washer up and down respectively, stuffing box and another metal washer are equipped with in the top, the bottom flange screw thread cooperate with valve body and fastening after, below metal washer valve body and flange, middle metal washer flange and stuffing box, above metal washer between stuffing box and bottom flange, form firmly respectively and seal, become the spacious sealing configuration of the peripheral pressurized metal screen of bellows, thereby guaranteed that valve can not produce external leakage; Locknut prevents from valve body and bottom flange locking from becoming flexible.
2, lower valve rod directly inserts the inside of stuffing box, and two Packing seats lay respectively at filler two ends up and down, places in the stuffing box and between the lower valve rod, screws in and adjusts the torque force of Gland with special spanner, compresses filler and makes its sealing; The locknut locking and positioning, form lower valve rod in stuffing box, can only move up and down and can not rotate, incorporate second time seal protection.
3, the bonnet of open type screws in bottom flange and fastening with it, and supporting base is threaded into upper valve rod and cooperates fastening with bonnet.
Advantage of the present utility model and beneficial effect are:
1, the utility model adopts spacious sealing of the peripheral pressurized metal screen of special-purpose metal bellows and metal washer hard sealing structure; high temperature high voltage resistant sealability excellence, reliable; the protection of high temperature high voltage resistant filler secondary seal is arranged again; preventing to have realized double-sealing, dual fail-safe aspect the external leakage, be specially adapted to high temperature, high pressure and aspects such as health, safety, environment had the medium and the occasion of harm.
2, bonnet of the present utility model is an open type, very helps heat radiation, greatly reduces the temperature of handle, helps operation, the also convenient simultaneously moment of torsion of adjusting Gland.
3, since special-purpose metal bellows and last packing seal all concentrate on the lower valve rod one, lower valve rod can only move up and down in stuffing box and special-purpose metal bellows and can not rotate during operated valve, greatly filler of Jian Shaoing and the friction between the lower valve rod improved the working life and the operating characteristics of valve greatly.
Description of drawings
Fig. 1 is the sectional structure chart of high temperature high pressure bellows instrument block valve.
Fig. 2 is the special-purpose metal bellows component sectional structure chart among Fig. 1.
Fig. 3 is that the lower valve rod among Fig. 2 cooperates sectional drawing with the flat endoporus of flange symmetry.
Fig. 4 is the single steel ball center thrust ball bearing structural drawing among Fig. 1.
Fig. 5 is the bonnet part sectioned view among Fig. 1.
Fig. 6 is the bonnet side view among Fig. 5.
Among the figure: 1, valve body 2, spool 3, lower valve rod 4, special-purpose metal bellows 5, locknut 6, bottom flange 7, flange 8, metal washer 9, filler 10, stuffing box 11, Packing seat 12, locknut 13, Gland 14, bonnet 15, locknut 16, the attaching nut 17, bearing support 18, big steel ball 19, small ball 20, swivel nut 21, upper valve rod 22, supporting base 23, handle 24, plunger tip 25, interior hexagonal Cock screw
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
In Fig. 1, spool (2) and lower valve rod (3) welding, special-purpose metal bellows (4) is enclosed within lower valve rod (3) and an end and its welded seal, and the other end and flange (7) welded seal constitutes Bellows valves core assembly (as shown in Figure 2); Be placed in the valve body (1), the both sides up and down of flange (7) have a metal washer (8) respectively, stuffing box (10) and another metal washer (8) are equipped with in the top, after bottom flange (6) and valve body (1) screw-thread fit are also fastening, following metal washer (8) is at valve body (1) and flange (7), middle metal washer (8) is at flange (7) and stuffing box (10), top metal washer (8) forms hard sealing respectively between stuffing box (10) and bottom flange (6), become the spacious sealing configuration of the peripheral pressurized metal screen of bellows, locknut (5) prevents from valve body (1) and bottom flange (6) locking from becoming flexible; The relevant position of lower valve rod (3) is designed to symmetrical pancake, and cooperates (as shown in Figure 3) with the corresponding symmetrical flat endoporus of flange (7), lower valve rod (3) can only be moved up and down in flange (7) and can not rotate; Stuffing box (10) is directly inserted in the relevant position of lower valve rod (3), two Packing seats (11) are respectively at the two ends of filler (9), place between the inside and lower valve rod (3) of stuffing box (10), screw in and adjust the torque force of Gland (13) with special spanner, compress filler (9) and make its sealing, locknut (12) locking and positioning, form lower valve rod (3) and in stuffing box (10), can only move up and down and can not rotate incorporate second time of seal protection; Lower valve rod (3) is connected with upper valve rod (21) by attaching nut (16), attaching nut (16) is single steel ball center thrust ball bearing structure (as shown in Figure 4), a big steel ball (18) places in the center hole of upper valve rod (21) end, having a bearing support that hardens (17) to be installed in the attaching nut (16) bottom the steel ball supports, the diameter of the uniform some in step top of upper valve rod (21) is small ball (19), and swivel nut (20) screws in attaching nut (16) and fastening; Lower valve rod (3) screw top and attaching nut (16) can adjust the gap of single steel ball center thrust ball bearing (as shown in Figure 4) when being connected, after adjust in the gap with locknut (15) locking and positioning; Open type bonnet (14) as shown in Figure 5 and Figure 6, with bottom flange (6) screw-thread fit and fastening with it, supporting base (22) is threaded into upper valve rod (21) and cooperates fastening with bonnet (14); Load onto handle (23) on the top of upper valve rod (21), the plunger tip (24) of in handle (23), packing into, firm being fixed on the upper valve rod (21) of hexagonal Cock screw (25) handle (23) in screwing; Rotatable handle drives upper valve rod and carries out open and close.
Claims (3)
1, a kind of high temperature high pressure bellows instrument block valve, adopt special-purpose metal sylphon seal structure, it is characterized in that: spool (2) and lower valve rod (3) welding, special-purpose metal bellows (4) is enclosed within on the lower valve rod (3), one end and its welded seal, the other end and flange (7) welded seal, constitute the Bellows valves core assembly, be placed in the valve body (1), the both sides up and down of flange (7) have a metal washer (8) respectively, stuffing box (10) and another metal washer (8) are equipped with in the top, and after bottom flange (6) and valve body screw-thread fit were also fastening, locknut (5) was locked valve body (1) and bottom flange (6).
2, according to the described high temperature high pressure bellows instrument block valve of claim 1, it is characterized in that: the inside of stuffing box (10) is directly inserted in the relevant position of lower valve rod (3), two Packing seats (11) are respectively at the two ends of filler (9), place between the inside and lower valve rod (3) of stuffing box (10), screw in and adjust the torque force of Gland (13), compress filler (9), locknut (12) locking and positioning.
3, according to the described high temperature high pressure bellows instrument block valve of claim 1, it is characterized in that: open bonnet (14) and bottom flange (6) screw-thread fit and fastening with it, supporting base (22) are threaded into upper valve rod (21) and cooperate also fastening with bonnet (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200397571U CN201215218Y (en) | 2008-07-11 | 2008-07-11 | High-temperature high-pressure bellows instrument block valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200397571U CN201215218Y (en) | 2008-07-11 | 2008-07-11 | High-temperature high-pressure bellows instrument block valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201215218Y true CN201215218Y (en) | 2009-04-01 |
Family
ID=40520423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200397571U Expired - Fee Related CN201215218Y (en) | 2008-07-11 | 2008-07-11 | High-temperature high-pressure bellows instrument block valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201215218Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089035A (en) * | 2014-07-21 | 2014-10-08 | 江苏星河阀门有限公司 | Valve rod irrotational structure of corrugated pipe check valve |
| CN106907505A (en) * | 2017-04-10 | 2017-06-30 | 浙江大学 | The high-pressure pneumatic proportional pressure-reducing valve of sylphon seal |
-
2008
- 2008-07-11 CN CNU2008200397571U patent/CN201215218Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089035A (en) * | 2014-07-21 | 2014-10-08 | 江苏星河阀门有限公司 | Valve rod irrotational structure of corrugated pipe check valve |
| CN106907505A (en) * | 2017-04-10 | 2017-06-30 | 浙江大学 | The high-pressure pneumatic proportional pressure-reducing valve of sylphon seal |
| CN106907505B (en) * | 2017-04-10 | 2018-10-12 | 浙江大学 | The high-pressure pneumatic proportional pressure-reducing valve of sylphon seal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101334116A (en) | Stop valve of bellows instrument | |
| CN201723769U (en) | Valve seat two-way sealing ball valve | |
| CN103244696A (en) | External-pressure type bellows globe valve with non-rotating valve rod | |
| CN203442144U (en) | External-pressure type bellows stop valve with non-rotating valve rod | |
| CN101319736A (en) | High temperature high pressure bellows instrument block valve | |
| CN201215218Y (en) | High-temperature high-pressure bellows instrument block valve | |
| CN201215219Y (en) | High-temperature high-pressure bellows instrument block valve with radiation fin structure | |
| CN203594838U (en) | Double-valve set of corrugated pipe instrument | |
| CN103591337A (en) | Three-valve group of corrugated pipe instrument | |
| CN202274116U (en) | Quick-change low-temperature single-seat control valve | |
| CN105003655A (en) | High-pressure connecting rod type bellows globe valve | |
| CN201215217Y (en) | Bellows instrument block valve | |
| CN203442159U (en) | Instrument stop valve with non-rotating valve rod | |
| CN106523729A (en) | Low-temperature top-assembling type fixed ball valve | |
| CN205479452U (en) | All -welded ball valve | |
| CN203560517U (en) | Corrugated pipe instrument five-valve set | |
| CN212056077U (en) | Y-shaped stop valve with false touch prevention mechanism | |
| CN205639687U (en) | A rack and pinion formula corrugated pipe sealing device for ball valve | |
| CN114857281A (en) | Bevel gear transmission light torque middle cavity non-pressure type adjusting type shaft flow valve | |
| CN103591336A (en) | Two-valve group of corrugated pipe instrument | |
| CN103244695A (en) | Internal pressure type bellows globe valve with non-rotary valve rod | |
| CN203718045U (en) | Three-valve set of corrugated pipe instrument | |
| CN203023507U (en) | Separating angle shutoff/throttling valve | |
| CN216618614U (en) | Three-piece forged steel soft sealing fixed ball valve | |
| CN207178723U (en) | A kind of floating type hard sealing structure in metal valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090401 |