CN203442149U - Supercritical high-pressure bypass valve - Google Patents
Supercritical high-pressure bypass valve Download PDFInfo
- Publication number
- CN203442149U CN203442149U CN201320470569.5U CN201320470569U CN203442149U CN 203442149 U CN203442149 U CN 203442149U CN 201320470569 U CN201320470569 U CN 201320470569U CN 203442149 U CN203442149 U CN 203442149U
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- valve
- valve body
- clack
- valve rod
- rod
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Abstract
The utility model discloses a supercritical high-pressure bypass valve. The supercritical high-pressure bypass valve comprises a valve body, a support connected with the valve body, a valve rod and a driving device arranged on the valve body; one end of the valve rod is mounted on the driving device and is controlled by the same; the other end of the valve rod is provided with a balanced guide type starting mechanism; the balanced guide type starting mechanism comprises a main valve clack, a secondary valve clack, a pre-starting sleeve and a spring; the main valve clack is mounted on the valve rod and is positioned between the valve rod and the inner cavity of the valve body; the secondary valve clack is rigidly connected with the valve rod and is positioned in the inner cavity of the main valve clack; the spring is mounted between the valve rod and the main valve clack; one end of the spring is positioned at a ring table arranged on the valve rod while the other end is abutted against the pre-starting sleeve. The main valve clack is contacted with a valve holder surface in the valve body; multiple sleeves are arranged at the output pipeline of the valve body and are positioned at the lower end of a valve holder. The obtained supercritical high-pressure bypass valve is laborsaving in opening due to the balanced guide type starting mechanism; the multifunctional pressure-reducing denoising sleeves are adopted, so the supercritical high-pressure bypass valve is anti-erosion and anti-cavitation, and the thermal stress impact is effectively eliminated by the reasonable water spraying structure.
Description
Technical field
The utility model relates to a kind of high side valve, particularly overcritical high side valve.
Background technique
Overcritical high side valve operating conditions is severe: High Temperature High Pressure is poor: operating pressure differential 27.0MPA left and right, operating temperature t=610 ℃ of left and right; Sealing grade high: ANSI Class V level and more than; Work often in throttle, the phenomenon of cavitation easily occurs, washing away; Temperature varying stress alternately changes large; Noise is large.
Under this operating mode, move valve and very easily damage, how to design and manufacture resistance to cavitation, antiscour, sealing grade is high, and warm sex change can be good, and the high pressure bypass valve of the low energy-conserving and environment-protective of noise is time topics that this valve need to solve.Therefore, hp by-pass system is widely used in, in the heat power equipment or system of the industries such as electric power, oil, chemical industry, having increased the flexibility of Unit Commitment, has reduced loss of steam and water, meets the policy of current energy-saving and emission-reduction; Eliminate the noise producing because of air-out tube, also met the requirement of environmental protection.
Model utility content
The purpose of this utility model is that the overcritical high side valve of a kind of labor-saving opening, protection against erosion and anti-cavitation is provided in order to solve above-mentioned the deficiencies in the prior art.
To achieve these goals, the overcritical high side valve that the utility model is designed, comprise valve body, the support that connects valve body, be placed in the valve rod in valve body and be arranged on the drive unit on valve body, it is characterized in that: one end of valve rod is arranged on drive unit and by its control, the other end is provided with balance leading type starting mechanism, described balance leading type starting mechanism comprises main valve clack, secondary flap, open in advance cover and spring, main valve clack is arranged on valve rod, and between valve rod and the inner chamber of valve body, secondary flap and valve rod are rigidly connected, secondary flap is arranged in main valve clack inner chamber, spring fitting is between valve rod and main valve clack, spring one end is positioned on the ring platform that valve rod is provided with, the other end with open in advance cover and conflict, main valve clack contacts with the valve seat surface in valve body, the outlet conduit of valve body is provided with multi-stage sleeve, multi-stage sleeve is positioned at valve seat lower end.
Preferably, between described support and valve body, blind flange is installed.
Preferably, blank nitriding precision processing in described stem surface warp.
Preferably, steam spray dish is installed under described multi-stage sleeve, steam spray dish lower end is provided with water spraying structure.
The overcritical high side valve that the utility model obtains, balance leading type starting mechanism, labor-saving opening, seals good; Adopt multifunctional decompression noise-reducing sleeve, there is protection against erosion, anti-cavitation function, the valve body shape of optimization and reasonably water spraying structure are effectively except Thermal Stress.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the partial enlarged drawing of valve closing in Fig. 1;
Fig. 3 is the partial enlarged drawing of valve opening in Fig. 1.
In figure: valve body 1, support 2, drive unit 3, blind flange 4, multi-stage sleeve 5, steam spray dish 6, water spraying structure 7, spring 10, secondary flap 11, main valve clack 12, ring platform 13, open cover 14, valve seat 16 in advance.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Embodiment:
As Fig. 1, Fig. 2, shown in Fig. 3, the overcritical high side valve that the utility model provides, comprise valve body 1, the support 2 that connects valve body, be placed in the valve rod 8 in valve body and be arranged on the drive unit 3 on valve body, one end of valve rod 8 is arranged on drive unit 3 and by its control, the other end is provided with balance leading type starting mechanism, described balance leading type starting mechanism comprises main valve clack 12, secondary flap 11, open in advance cover 14 and spring 10, main valve clack 12 is arranged on valve rod 8, and between valve rod 8 and the inner chamber of valve body 1, secondary flap 11 is rigidly connected with valve rod 8, secondary flap 11 is arranged in main valve clack 12 inner chambers, spring 10 is arranged between valve rod 8 and main valve clack 12, spring 8 one end are positioned on the ring platform 13 that valve rod is provided with, the other end with open in advance cover 14 and conflict, main valve clack 12 contacts with 16 of valve seats in valve body, the outlet conduit of valve body 1 is provided with multi-stage sleeve 5, multi-stage sleeve 5 is positioned at valve seat 16 lower ends, adopt multi-stage sleeve structure, step pressure reducing, there is protection against erosion, the function of anti-cavitation, the aperture that distributes and differ in size according to fluid mechanics on sleeve, pressure energy evenly releases energy, the function of noise reduction for tool.
In order to dismantle and easy to maintenance, blind flange 4 is installed between described support and valve body, in described valve rod 8 surface warps, blank nitriding precision processing surface roughness is very low, improve hardness homogenization, effectively reduce valve friction torque, extend valve rod and gland sealed working life, simultaneously the corresponding motor output torque reducing and can select the electrical header of corresponding power.
Described multi-stage sleeve is provided with steam spray dish 6 for 5 times, and steam spray is coiled 6 lower ends water spraying structure 7 is installed, the employing wall thickness of Denging and Streamline Design, avoid the temperature inequality of being heated; Water spray adopts cage hood configuration, and hole for water spraying and steam spray dish calculate through a large amount of fluid mechanics, and cooling water and vapor stream are fully mixed, and reach and are heated evenly, and the feature that atomizing effect is good, avoids water entrained by steam.
As everyone knows, for adjustment type Denso, the relatively many revolution Densos of its driving force, all smaller, for overcritical high side valve, its pressure reduction reaches 27.0Mpa, and bore reaches 250, if adopt non-equilibrium structure, cannot open at all; If only adopt balance type structure, because the power acting on sealing surface is less, sealing effect is also undesirable; Based on this, we have adopted balanced type+leading type structure, have guaranteed labor-saving opening, have guaranteed that again valve utilizes import medium self pressure to help sealing after closing,
When valve closing, first main valve clack 12 contacts valve seat 16 as a balance flap, contacts sealing subsequently after secondary flap 11 Compress Spring 10 distortion with its auxiliary-seat.Now, balance chipware has originally become non-equilibrium chipware, and the pressure of epicoele has produced huge thrust to flap, impels valve closing to obtain tightly without leaking.When valve opening, final controlling element only needs open auxiliary flap.After open auxiliary flap, main valve clack becomes equilibrium structure by non-equilibrium structure at once.
Adopt multifunctional decompression noise-reducing sleeve, there is protection against erosion, anti-cavitation function.
Claims (4)
1. an overcritical high side valve, comprise valve body, the support that connects valve body, be placed in the valve rod in valve body and be arranged on the drive unit on valve body, it is characterized in that: one end of valve rod is arranged on drive unit and by its control, the other end is provided with balance leading type starting mechanism, described balance leading type starting mechanism comprises main valve clack, secondary flap, open in advance cover and spring, main valve clack is arranged on valve rod, and between valve rod and the inner chamber of valve body, secondary flap and valve rod are rigidly connected, secondary flap is arranged in main valve clack inner chamber, spring fitting is between valve rod and main valve clack, spring one end is positioned on the ring platform that valve rod is provided with, the other end with open in advance cover and conflict, main valve clack contacts with the valve seat surface in valve body, the outlet conduit of valve body is provided with multi-stage sleeve, multi-stage sleeve is positioned at valve seat lower end.
2. overcritical high side valve according to claim 1, is characterized in that: between described support and valve body, blind flange is installed.
3. overcritical high side valve according to claim 1, is characterized in that: blank nitriding precision processing in described stem surface warp.
4. overcritical high side valve according to claim 1, is characterized in that: steam spray dish is installed under described multi-stage sleeve, and steam spray dish lower end is provided with water spraying structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320470569.5U CN203442149U (en) | 2013-07-24 | 2013-07-24 | Supercritical high-pressure bypass valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320470569.5U CN203442149U (en) | 2013-07-24 | 2013-07-24 | Supercritical high-pressure bypass valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203442149U true CN203442149U (en) | 2014-02-19 |
Family
ID=50093206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320470569.5U Expired - Fee Related CN203442149U (en) | 2013-07-24 | 2013-07-24 | Supercritical high-pressure bypass valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203442149U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023275080A1 (en) * | 2021-06-28 | 2023-01-05 | Samson Aktiengesellschaft | Control valve |
-
2013
- 2013-07-24 CN CN201320470569.5U patent/CN203442149U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023275080A1 (en) * | 2021-06-28 | 2023-01-05 | Samson Aktiengesellschaft | Control valve |
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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: 20140219 Termination date: 20210724 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |