CN203868378U - Supercritical cascading anti-clamping valve for CO2 - Google Patents
Supercritical cascading anti-clamping valve for CO2 Download PDFInfo
- Publication number
- CN203868378U CN203868378U CN201420264210.7U CN201420264210U CN203868378U CN 203868378 U CN203868378 U CN 203868378U CN 201420264210 U CN201420264210 U CN 201420264210U CN 203868378 U CN203868378 U CN 203868378U
- Authority
- CN
- China
- Prior art keywords
- valve
- supercritical
- valve body
- cascading
- sticking
- 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
- 210000004907 gland Anatomy 0.000 claims abstract description 4
- 210000004722 stifle Anatomy 0.000 claims description 11
- 239000000945 filler Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 abstract description 2
- 238000012856 packing Methods 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 1
- 238000009991 scouring Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000007701 flash-distillation Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Sliding Valves (AREA)
Abstract
The utility model discloses a supercritical cascading anti-clamping valve for CO2 and belongs to the technical field of valves. The supercritical cascading anti-clamping valve for CO2 comprises a valve body, flanges arranged on the two sides of the valve body and a stifling cover arranged at the bottom of the valve body. A valve sleeve is arranged in the valve body in a matched mode. A valve element is arranged in the valve sleeve in a matched mode. The surface of the valve element is provided with one or more groups of recessed gaps. The valve element is connected with a valve rod. A guide sleeve is arranged between the valve rod and the valve body in a matched mode. The space between the valve rod and the valve body is sealed through a packing material, a packing gasket and a packing gland. The upper end of the valve rod is connected with an actuator. According to the supercritical cascading anti-clamping valve for CO2, a multi-gap cascading valve element structure is adopted, and granular media can be effectively stopped at the gaps, so that the granular media are driven to flow downwards along with upward opening of the valve element, and the media are prevented from generating crystalline particles and making the valve element get stuck in the supercritical state; the valve has high flow capacity and complete anti-cavitation capacity; the cascading valve element and the valve sleeve can form different throttling stages according to different differential pressure designs, so that scouring damage to the surface of the valve element by fluid is effectively reduced.
Description
Technical field
The utility model belongs to valve technology field, is specifically related to a kind of supercritical CO
2with tandem anti-sticking valve.
Background technique
In prior art, conventionally adopt multiple step plug or labyrinth structure pressure reduction with classification, with the infringement of avoiding flash distillation, cavitation, cavitation to cause valve pipe system.Both at home and abroad the telescopic or maze-type structure of common employing multilevel decompression modulating valve, can solve the problem of cavitation producing under High Pressure Difference operating mode, but its medium (CO
2) under supercritical state, produce particle pass through sleeve or labyrinth valve pocket time easily produce jam, be the serious consequence that valve invalidation causes whole operating mode.Therefore existing valvular shortcoming is: such valve can only, at the cleaner vapour-liquid state of medium, need to, in the situation that pressure reduction is larger, be used the start-stop performance of valve and the less demanding operating mode occasion of reaction velocity; Special in the situation that having particle media, cause valve damaged.
Model utility content
The problem existing for prior art, the purpose of this utility model is that design provides a kind of supercritical CO
2technological scheme with tandem anti-sticking valve.
Described a kind of supercritical CO
2with tandem anti-sticking valve, comprise valve body, be arranged on the flange and the stifle that is arranged on valve body bottom of valve body both sides, it is characterized in that being equipped with valve pocket in described valve body, in described valve pocket, be equipped with spool, described spool face arranges the breach of one group of above indent, described spool connects valve rod, between described valve rod and valve body, be equipped with guide sleeve, and between described valve rod and valve body, by filler, filler pad and the Gland arranging, seal, described valve rod upper end connects actuator.
Described a kind of supercritical CO
2with tandem anti-sticking valve, it is characterized in that described flange and valve body welded seal.
Described a kind of supercritical CO
2with tandem anti-sticking valve, it is characterized in that described stifle is connected rear welded seal with valve body screw thread.
Described a kind of supercritical CO
2with tandem anti-sticking valve, it is characterized in that described valve pocket rear surface is by the one group of outer convex rib and the valve body interference fit that arrange, between described valve pocket upper end and valve body, leave the runner hole entering for medium, this runner hole communicates with the medium inlet hole that is arranged on valve pocket top.
Described a kind of supercritical CO
2with tandem anti-sticking valve, it is characterized in that described valve pocket internal surface at least arranges one group of inner convex rib, described inner convex rib coordinates with spool face, forms medium buck channel between the breach of described spool and valve pocket.
Described a kind of supercritical CO
2with tandem anti-sticking valve, it is characterized in that described stifle is provided with cutoff hole.
Described a kind of supercritical CO
2with tandem anti-sticking valve, it is characterized in that described breach consists of indent inclined-plane and the inner groovy that is connected with indent inclined-plane.
Above-mentioned a kind of supercritical CO
2with tandem anti-sticking valve, simple in structure, reasonable in design, the utility model adopts the special construction of the Cascade valve core structure, particularly breach of many breach, can effectively particle media be trapped in to indentation, there, thereby along with upwardly opening of spool drives particle media, flow downward, prevent medium (CO
2) under supercritical state, produce crystalline particle spool is produced to jam, there is higher negotiability and complete anti-cavitation ability, Cascade spool can form different throttling progression from valve pocket according to different pressure reduction designs, effectively reduces the erosion damage of fluid to spool face.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of spool and valve rod in the utility model;
Fig. 3 is the side-looking structural representation of Fig. 2;
Fig. 4 is the structural representation of valve pocket in the utility model.
In figure: 1-stifle; 101-cutoff hole; 2-valve body; 3-valve pocket; 301-inner convex rib; 302-medium inlet hole; 303-outer convex rib; 4-spool; 401-breach; 4011-indent inclined-plane; 4012-inner groovy; 5-guide sleeve; 6-filler; 7-connecting plate; 8-round nut; 9-filler pad; 10-Gland; 11-flange; 12-valve rod; 13-enters medium channel; 14-goes out medium channel; 15-medium buck channel.
Embodiment
Below in conjunction with Figure of description, further illustrate the utility model.
As described in Figure 1, a kind of supercritical CO
2with tandem anti-sticking valve, comprise valve body 2, flange 11, stifle 1 and valve pocket 3.Flange 11 is connected with valve body 2 seal weldings, and wherein a side flange 11 communicates with the medium channel 13 that enters on valve body 2, and opposite side flange 11 communicates with the medium channel 14 that goes out on valve body 2.Valve pocket 3 is connected with the process seal of valve body 2 by interference fit (hot charging is joined or ultralow temperature assembling), and specifically valve pocket 3 rear surfaces are by the one group of outer convex rib 303 and valve body 2 interference fit that arrange.In addition, arranging of outer convex rib 303 reduced the impact of being expanded with heat and contract with cold between valve pocket 3 and valve body 2.Between valve pocket 3 upper ends and valve body 2, leave the runner hole entering for medium, this runner hole communicates with being arranged on the medium inlet hole 302 that valve pocket 3 tops are provided with, and this gap with enter medium channel 13 and communicate.Stifle 1 and valve body 2 welds and sealed after adopting and being threaded, and stifle 1 is provided with cutoff hole 101, cutoff hole 101 with go out medium channel 14 and communicate.
In valve pocket 3, be equipped with spool 4, spool 4 surfaces arrange the breach 401 of one group of above indent, and this breach 401 consists of indent inclined-plane 4011 and the inner groovy 4012 that is connected with indent inclined-plane 4011.Meanwhile, valve pocket 3 internal surfaces at least arrange one group of inner convex rib 301, this inner convex rib 301 and spool 4 surface engagement.Between the breach 401 of spool 4 and valve pocket 3, form medium buck channel 15.Spool 4 adopts after said structure with valve pocket 3, between spool 4 and valve pocket 3, forms tandem throttling and sealing.
On spool 4, be connected with valve rod 12, valve rod 12 connects actuator.Spool 4 and valve rod 12 structure that is formed in one, also can adopt Split connection structure.Between valve rod 12 and valve body 1, be equipped with guide sleeve 5,5 pairs of valve rods of guide sleeve 12 lead and carry out spacing to spool 4.Between valve rod 12 and valve body 1, by filler 6, filler pad 9 and the Gland 10 arranging, seal.On valve body 1, be also provided with by the fixing connecting plate 7 of round nut 8, connecting plate 7 connects for actuator.
During work, medium is entered gap and the medium inlet hole 302 of entering medium channel 13, valve pocket 3 and valve body 2 of valve body 2 successively through flange 11 by the direction of arrow, then enter spool 4 upper ends, when the valve rod 12 medium buck channel 15 that medium forms between by valve pocket 3 and spool 4 when being equipped with actuator and opening flows down stifle 1 place step by step, finally from the cutoff hole 101 of stifle 1, flow to out medium channel 14.
Shown in the above and figure is only preferred implementation of the present utility model.It should be pointed out that for the person of ordinary skill of the art, not departing under the prerequisite of the utility model principle, can also make some modification and improvement, these also should be considered as belonging to protection domain of the present utility model.
Claims (7)
1. a supercritical CO
2with tandem anti-sticking valve, comprise valve body (2), be arranged on the flange (11) of valve body (2) both sides and be arranged on the stifle (1) of valve body (2) bottom, it is characterized in that being equipped with valve pocket (3) in described valve body (2), in described valve pocket (3), be equipped with spool (4), described spool (4) surface arranges the breach (401) of one group of above indent, described spool (4) connects valve rod (12), between described valve rod (12) and valve body (1), be equipped with guide sleeve (5), and between described valve rod (12) and valve body (1), pass through the filler (6) arranging, filler pad (9) and Gland (10) sealing, described valve rod (12) upper end connects actuator.
2. a kind of supercritical CO as claimed in claim 1
2with tandem anti-sticking valve, it is characterized in that described flange (11) and valve body (2) welded seal.
3. a kind of supercritical CO as claimed in claim 1
2with tandem anti-sticking valve, welded seal after the stifle (1) described in it is characterized in that is threaded with valve body (2).
4. a kind of supercritical CO as claimed in claim 1
2with tandem anti-sticking valve, it is characterized in that described valve pocket (3) rear surface is by the one group of outer convex rib (303) and valve body (2) interference fit that arrange, between described valve pocket (3) upper end and valve body (2), leave the runner hole entering for medium, this runner hole communicates with the medium inlet hole (302) that is arranged on valve pocket (3) top.
5. a kind of supercritical CO as claimed in claim 1
2with tandem anti-sticking valve, it is characterized in that described valve pocket (3) internal surface at least arranges one group of inner convex rib (301), described inner convex rib (301) and spool (4) surface engagement, form medium buck channel (15) between the breach (401) of described spool (4) and valve pocket (3).
6. a kind of supercritical CO as claimed in claim 1
2with tandem anti-sticking valve, it is characterized in that described stifle (1) is provided with cutoff hole (101).
7. a kind of supercritical CO as claimed in claim 1
2with tandem anti-sticking valve, it is characterized in that described breach (401) is by indent inclined-plane (4011) and inner groovy (4012) formation that is connected with indent inclined-plane (4011).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264210.7U CN203868378U (en) | 2014-05-22 | 2014-05-22 | Supercritical cascading anti-clamping valve for CO2 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264210.7U CN203868378U (en) | 2014-05-22 | 2014-05-22 | Supercritical cascading anti-clamping valve for CO2 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203868378U true CN203868378U (en) | 2014-10-08 |
Family
ID=51649333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420264210.7U Expired - Fee Related CN203868378U (en) | 2014-05-22 | 2014-05-22 | Supercritical cascading anti-clamping valve for CO2 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203868378U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968100A (en) * | 2014-05-22 | 2014-08-06 | 杭州良工阀门有限公司 | Cascading anti-jamming valve used for supercritical CO2 |
-
2014
- 2014-05-22 CN CN201420264210.7U patent/CN203868378U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968100A (en) * | 2014-05-22 | 2014-08-06 | 杭州良工阀门有限公司 | Cascading anti-jamming valve used for supercritical CO2 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |