CN203404398U - Regulating valve for Texaco process - Google Patents
Regulating valve for Texaco process Download PDFInfo
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- CN203404398U CN203404398U CN201320464491.6U CN201320464491U CN203404398U CN 203404398 U CN203404398 U CN 203404398U CN 201320464491 U CN201320464491 U CN 201320464491U CN 203404398 U CN203404398 U CN 203404398U
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- valve
- sleeve
- seat
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Abstract
The utility model relates to a regulating valve for the Texaco process. The regulating valve comprises a valve body, the upper end of a valve main body of the valve body is connected with a stuffing box, a stuffing assembly is arranged between the stuffing box and a valve rod of the valve body, a stuffing pressing plate is arranged at the upper end of the stuffing assembly, a valve seat and a sleeve are arranged inside the valve main body of the valve body, the valve seat and the sleeve are of an integrated structure, a valve head of the valve body is located inside a sleeve cavity of the sleeve, and a valve head profile is arranged at the lower end of the valve head. As the valve seat and the sleeve which are integrally formed are adopted, leaking points do not exist between the valve seat and the sleeve, and the sealing performance is good; the valve head is located inside the sleeve cavity of the sleeve, the valve head is separated from the sleeve, it is guaranteed that motions of the valve body are smooth, and the service life of the valve body is prolonged; the aim of accurately controlling the pressure/flow is achieved through the matching effect of the valve head profile and the sealing face of the valve seat; throttling is respectively carried out on the matching positions of the sleeve and the valve seat, the two-grade pressure difference is formed, erosion of media on inner valve pieces is greatly reduced, and the service life of the valve body is prolonged.
Description
Technical field
The utility model relates to Coal Chemical Industry Texaco technology field, specifically refers to a kind of Texaco technique modulating valve.
Background technique
Texaco's technique is one of main flow technique of Coal Chemical Industry industry, and in this technique, valve is larger at specific station pressure reduction, and in medium, has 1%(mass fraction) left and right solid content, higher to the performance requirement of valve.What under this working condition, generally use at present is single seat Angle Throttle Valves, because larger pressure reduction easily makes liquid medium cavitation erosion, the large energy discharging in cavitation erosion process can damage trim, simultaneously, under High Pressure Difference, the flow velocity of medium is larger, the high flow rate medium that carries solid particle can cause larger washing away to trim, causes shorten the working life of trim.For above problem, more domestic producers mainly start with from strengthening internals hardness aspect, change the material that intensity is larger, hardness is higher, although adopt such processing method that extended the working life of valve to some extent, but and unresolved liquid cavitates and high flow rate medium washes away the problem that trim is damaged, do not tackle the problem at its root, and cause the maintenance cost of valve higher, Ye You producer attempts using conventional sleeve cartridge type valve, this kind of valve played comparatively significantly effect to control media flow velocity, but because needing valve head and sleeve, traditional telescoping valve fits, by the area of passage of the throttle orifice of discontinuous distribution on mobile valve head change sleeve, realize the control of pressure/flow, cause degree of regulation not accurate enough, and solid phase particles is easily clipped between valve head and sleeve, cause valve motion bite, scratch trim, affect valve working life, in addition, conventional sleeve valve cage and valve seat are separated from one another, on the two surface of contact, easily form leak source, sealing is poor.
Model utility content
Technical problem to be solved in the utility model is the present situation for prior art, provides that a kind of erosion resistance, degree of regulation are high, Texaco's technique modulating valve of long service life, good seal performance.
The utility model solves the problems of the technologies described above adopted technological scheme: a kind of Texaco technique modulating valve, comprise valve, the valve body upper end of described valve is connected with stuffing box, between described stuffing box and the valve rod of valve, be provided with filler assembly, this filler assembly upper end is provided with hold-down grid, in the valve body of described valve, be provided with valve seat and sleeve, it is characterized in that, described valve seat and sleeve are structure as a whole, the valve head of described valve is positioned at the cylinder chamber of described sleeve, and described valve head lower end is provided with valve head profile.
As preferably, described valve head lower end is also provided with valve head sealing surface, and described valve seat upper end is provided with sealing surface of seat.
Preferably, on described sleeve, be provided with a plurality of apertures.
Preferably, described valve head upper end is connected with described valve rod.
Preferably, between described valve body and described valve seat, be provided with valve seat wound gasket, described valve body is connected by valve seat Cock screw with described valve seat, and described valve body upper end is connected with middle flange by middle flange bolt nut, is provided with stuffing box wound gasket between described valve body and stuffing box.
Compared with prior art, the utility model has the advantage of: owing to having adopted valve seat and the sleeve of one, make not exist between valve seat and sleeve leak source, good seal performance; Valve head is positioned at the cylinder chamber of described sleeve, and valve head and sleeve are separated, and has had enough gaps between valve head and sleeve, guarantees not bite of valve event, has reduced the damage of friction to internals, is conducive to extend the working life of valve; Utilize the mating reaction of valve head profile and sealing surface of seat, orifice size is changed continuously, control without dead band, reach the object of accurate pilot pressure/flow; As the introducing of local resistance element sleeve, make sleeve and the throttling separately of valve seat cooperation place, form two-stage pressure reduction, greatly reduce the erosion of medium to trim, extended the working life of valve.
Accompanying drawing explanation
Fig. 1 is structural principle of the present utility model and media flow schematic diagram.
Fig. 2 is the structural representation of valve seat and sleeve in the utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in Figure 1, 2, a kind of Texaco technique modulating valve, comprise valve, valve body 1 upper end of described valve is connected with stuffing box 4, between described stuffing box 4 and the valve rod 7 of valve, be provided with filler assembly 8, these filler assembly 8 upper ends are provided with hold-down grid 9, tightening hold-down grid bolt and nut 11, power is passed on filler assembly 8 by hold-down grid 9, compressible filler assembly 8, filler assembly 8 is fitted tightly with the inwall 15 of valve rod 7, stuffing box 4 respectively, guarantee that medium can not leak from the gap location between above-mentioned three.
Above-mentioned valve rod 7 is connected with outside actuator, and power band ovable valve stem 7 and valve head 6 that actuator provides move up and down, by valve head 6, coordinate with valve seat 2 realize valve unlatching, close and regulate.
In the present embodiment, be provided with valve seat 2 and sleeve 3 in the valve body 1 of described valve, this valve seat 2 and sleeve 3 are structure as a whole, and such structure makes not have leak source, good seal performance between valve seat 2 and sleeve 3; The valve head 6 of described valve is positioned at the cylinder chamber of described sleeve 3, owing to having larger gap between valve head 6 and sleeve 3, so when medium flows into from valve bottom, not only guaranteed that bite does not occur valve head 6 in moving up and down process, avoid graininess medium scratch internals, extend the working life of valve, also can make valve head 6 all directions stressed evenly, the motion of valve head 6 is more steady.
Above-mentioned valve head 6 lower ends are connected with valve head profile 18, above-mentioned valve head 6 lower ends are provided with valve head sealing surface 16, described valve seat 2 upper ends are provided with sealing surface of seat 17, on above-mentioned sleeve 3, scattering device has a plurality of apertures 19, above-mentioned valve head 6 upper ends are connected with described valve rod 7, when valve head sealing surface 16 and sealing surface of seat 17 fit, and while reaching certain seal pressure, valve closing, when the power of actuator drives valve head 6 to move up, the different parts of valve head profile 18 and sealing surface of seat 17 form the restrictor ring differing in size, this restrictor ring can accurately be controlled orifice size, thereby change the flow resistance coefficient of valve so as to flow and the pressure of regulating valve, when medium flows into from valve bottom, after the restrictor ring that the valve head profile 18 of flowing through and sealing surface of seat 17 form, by the aperture 19 on sleeve 3, flow out valve again, above-mentioned restrictor ring and aperture 19 places all exist the sudden contraction sudden expansion of Flow area and MEDIA FLOW to change, the local resistance element that can regard two series connection as, two independent dividing potential drops of local resistance element form two-stage pressure drop, effectively prevent the generation of cavitation erosion, the relative increase of flow resistance coefficient reduces velocity of medium, avoids the friction erosion effect of high flow rate medium to trim.
Above-mentioned valve body 1 is connected by valve seat Cock screw 12 with above-mentioned valve seat 2, and is provided with valve seat wound gasket 14 between above-mentioned valve body 1 and above-mentioned valve seat 2, compresses this valve seat wound gasket 14, to guarantee that medium can not leak from the gap location of valve body 1 and valve seat 2.
Above-mentioned valve body 1 upper end is connected with middle flange 5 by middle flange bolt nut 10, between above-mentioned valve body 1 and stuffing box 4, be provided with stuffing box wound gasket 13, middle flange 5 is passed to stuffing box wound gasket 13 by stuffing box 4 by power in fastening, compress stuffing box wound gasket 13, to guarantee that medium can not leak from the gap of valve body 1 and stuffing box 4.
Claims (7)
1.Yi Zhong Texaco technique modulating valve, comprise valve, the valve body upper end of described valve is connected with stuffing box, between described stuffing box and the valve rod of valve, be provided with filler assembly, this filler assembly upper end is provided with hold-down grid, is provided with valve seat and sleeve in the valve body of described valve, it is characterized in that: described valve seat and sleeve are structure as a whole, the valve head of described valve is positioned at the cylinder chamber of described sleeve, and described valve head lower end is provided with valve head profile.
2. Texaco according to claim 1 technique modulating valve, is characterized in that: described valve head lower end is also provided with valve head sealing surface, and described valve seat upper end is provided with sealing surface of seat.
3. Texaco according to claim 1 and 2 technique modulating valve, is characterized in that: on described sleeve, scattering device has a plurality of apertures.
4. Texaco according to claim 1 and 2 technique modulating valve, is characterized in that: described valve head upper end is connected with described valve rod.
5. Texaco according to claim 2 technique modulating valve, is characterized in that: between described valve body and described valve seat, be provided with valve seat wound gasket, described valve body is connected by valve seat Cock screw with described valve seat.
6. Texaco according to claim 3 technique modulating valve, is characterized in that: described valve body upper end is connected with middle flange by middle flange bolt nut.
7. Texaco according to claim 4 technique modulating valve, is characterized in that: between described valve body and described stuffing box, be provided with stuffing box wound gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320464491.6U CN203404398U (en) | 2013-07-31 | 2013-07-31 | Regulating valve for Texaco process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320464491.6U CN203404398U (en) | 2013-07-31 | 2013-07-31 | Regulating valve for Texaco process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203404398U true CN203404398U (en) | 2014-01-22 |
Family
ID=49940335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320464491.6U Expired - Lifetime CN203404398U (en) | 2013-07-31 | 2013-07-31 | Regulating valve for Texaco process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203404398U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455469A (en) * | 2014-09-29 | 2015-03-25 | 北京航天动力研究所 | Throttling serial type multistage pressure reduction and adjustment valve |
| CN105402418A (en) * | 2014-09-16 | 2016-03-16 | 江苏神通阀门股份有限公司 | Angular regulating valve |
-
2013
- 2013-07-31 CN CN201320464491.6U patent/CN203404398U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402418A (en) * | 2014-09-16 | 2016-03-16 | 江苏神通阀门股份有限公司 | Angular regulating valve |
| CN104455469A (en) * | 2014-09-29 | 2015-03-25 | 北京航天动力研究所 | Throttling serial type multistage pressure reduction and adjustment valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140122 |