CN204083283U - A kind of high-pressure differential valve of angie type valve body - Google Patents
A kind of high-pressure differential valve of angie type valve body Download PDFInfo
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- CN204083283U CN204083283U CN201420502890.1U CN201420502890U CN204083283U CN 204083283 U CN204083283 U CN 204083283U CN 201420502890 U CN201420502890 U CN 201420502890U CN 204083283 U CN204083283 U CN 204083283U
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Abstract
The utility model discloses a kind of high-pressure differential valve of angie type valve body, its main technical schemes is: valve seat is positioned in the middle of the upper and lower chamber of valve body, multistage throttle assembly is positioned at below valve seat, and spool or mangetic core assembly lower end are provided with throttle sleeve, it has multiple through-flow window; Media outlet end is arranged on valve body lower end, direction down, from the toroidal cavity outside multistage throttle assembly to the annular exit passage being outside equipped with two balanced configurations, article two, annular exit passage is from cavity extraction rear to lower turn and be communicated with media outlet end after lower end is converged gradually, is provided with downward protrusion, shunting flange along the taper extended with the direction of annular exit passage place plane orthogonal on the upside of the body cavity of concourse.Beneficial effect is: contribute to the sealing reliability of guarantee valve and washing away and cavitation erosion of sealing surface during reduction small guide vane, can meet the supporting and installation needs of unit and system better.
Description
Technical field
The utility model relates to a kind of valve mechanism, is specifically related to a kind of valve body structure of high-pressure differential valve.
Background technique
High-pressure differential valve is important valve in the unit of the industry such as power station, petrochemical industry and system and critical valves, as the minimum flow valve (feed water pump recycle valve) of installation supporting in the water supply system of thermal power plant, when extra-supercritical unit uses, the Maximum differential pressure of its entrance end can reach nearly 40MPa, and need when valve closing to guarantee to reach zero leakage, working condition requirement is extremely harsh.In addition, class valve is regulated in the industry such as petrochemical industry, Coal Chemical Industry also supporting some High Pressure Difference with harsh usage requirement that are provided with.The High Pressure Difference of this kind of harsh operating mode that current domestic unit and equipment are installed and used regulates class valve substantially to go back dependence on import.Compared with the product of domestic manufacturer, the high-pressure differential valve of import has more reliable and stable usability and relatively long working life, but due to the restriction of product structure design aspect, also there are some shortcomings in use in imported product, as minimum flow valve, current domestic main imported product is the product of CCI company of the U.S. and Copes-Vulcan company, the labyrinth minimum flow valve (Fig. 1) of CCI company have employed the design of stream pass type in order to the sealability improving valve, namely medium is by the outer side inflow of labyrinth throttling core bag, through sealing surface of seat, place flows out downwards, because medium during small guide vane can form vapour after reducing pressure by regulating flow, liquid two-phase flows, because of volumetric expansion, flow velocity is significantly accelerated at the outlet port medium of labyrinth throttling, cause valve sealing surface when small guide vane runs can be subject to more serious washing away, thus CCI product has to want quick closedown when the service condition of valve is set to arrival 10% aperture, and the minimum flow valve product of Copes-Vulcan company, in order to overcome this defect, MEDIA FLOW is to the design adopting contrary stream open form, although product can run at small guide vane, but because valve pressure is high, the upper top power of medium to spool is large, when therefore closing, the design of stream open form is unfavorable for the sealing of valve very much.
High Pressure Difference regulates the basic position relationship between the valve seat of class valve products, spool, throttling element (sleeve assembly) three to be both at home and abroad at present: spool and throttling element (sleeve assembly) are positioned at the top of valve seat.When valve is the design of stream pass type and upper entering and lower leaving, medium is from throttling element (sleeve assembly) lateral intermediate flow, during valve closing, pressure medium acts on the sealability that spool can improve greatly valve, but valve is when small guide vane runs, if it is gas that medium can form vapour, liquid two-phase flowing or medium at decompression back segment, because the highest and medium volumetric expansion flow velocity after decompression of now pressure reduction enlarges markedly, the sealing surface of valve seat and spool can be subject to more serious washing away and even cavitation erosion; And when valve adopts the design of stream open form and bottom in and top out, medium for flowing laterally in the middle of throttling element (sleeve assembly), when small guide vane runs, the sealing surface of valve seat and spool washes away by medium and is less than aforesaid stream pass type structure with the possibility of cavitation erosion, but high-pressure medium acts on below spool during valve closing, the upper top power of medium to spool can be unfavorable for that valve realizes sealing reliably very much.The combination form of the valve seat namely regulating class valve to take for existing High Pressure Difference, spool, throttling element (sleeve assembly), no matter flow to and how to select, when ensureing the sealing reliability of valve and reduce small guide vane, the cavitation erosion that washes away of sealing surface is all conflict, can not be taken into account both simultaneously, the two can only get one, and both is all very important concerning the usability of valve.In order to address this problem, the utility model claimant on January 23rd, 2014 to propose and in the Chinese utility model patent ZL201420044593.7 " structure of high-differential-pressure regulating valve " obtained the authorization on July 9th, 2014, disclose a kind of based on valve seat, spool, the High Pressure Difference of the new integrated mode of throttling element (sleeve assembly) regulates the structural type (as shown in Figure 2) of class valve, this structure moves to the downside of valve seat (2) multistage throttle assembly (4), in the lower end of spool or mangetic core assembly (3), the throttle sleeve (3-1) being with water conservancy diversion window is set, medium enters valve seat (2) top from the entry end of valve body (1), water conservancy diversion window through throttle sleeve (3-1) enters into throttle sleeve (3-1) lower end, the cavity (5) of the annular in multistage throttle assembly (4) outside is flowed out to again after multistage throttle assembly (4) throttle, the outlet end of valve body (1) is flow to again from cavity (5).Because MEDIA FLOW is to being stream pass type and medium flows through sealing surface place before throttling, when thus enabling the sealing reliability of guarantee valve and reduce small guide vane, the performance requirement washing away these two products of cavitation erosion of sealing surface is met simultaneously.
The valve body structure pattern of the embodiment exemplified in above-mentioned ZL201420044593.7 utility model patent is straight-through type, apply more a kind of valve body pattern, but product in actual applications, need the product also needing angie type valve body supporting for installing due to Pipe net disposition, as thermal power plant's minimum flow valve, except having the product of straight-through type valve body, the unit of many power plant is also provided with the product of angie type valve body.Therefore, High Pressure Difference disclosed in above-mentioned ZL201420044593.7 patent is regulated to the structural type of class valve, beyond straight-through type valve body structure, also need the structure proposing angie type valve body, enable the product formed by this patented technology meet the supporting needs of unit and system better.The High Pressure Difference of existing structure regulates the angie type structure of class valve, and medium channel is from valve seat orifice directly to lower formation vertical passage, and with in 90 ° crossing with the horizontal channel that valve body epicoele connects, the setting of angie type structure is comparatively simple, and for above-mentioned ZL201420044593.7 patent structure, situation about facing is then different, medium from throttle sleeve (3-1) lower end flow out after level of answering be folded to multistage throttle assembly (4) direction enter after multistage throttle assembly (4) throttling reduction of speed multistage throttle assembly (4) outside cavity (5) and flow to valve export from cavity (5), and can not directly from throttle sleeve (3-1) directly to lower outflow, therefore, need to build one and the structure that outlet passage downward with valve body for cavity (5) is communicated with is formed the technological scheme instructing the High Pressure Difference of angie type valve body to regulate class valve products structural design.
Summary of the invention
In order to solve the above problems, the utility model provides a kind of the washing away and cavitation erosion, the high-pressure differential valve structure that can meet the angie type valve body of unit and system support needs better of valve sealing face when contributing to ensureing the sealing reliability of valve and reduce small guide vane.
To achieve these goals, the utility model is by the following technical solutions:
A kind of high-pressure differential valve of angie type valve body, its main technical schemes is: the high-pressure differential valve of described angie type valve body is respectively arranged with sealing surface and matches when valve closing on spool or mangetic core assembly and valve seat, in the middle of the epicoele that valve seat is positioned at valve body and cavity of resorption, the below of valve seat is multistage throttle assembly, down be extended with the throttle sleeve of the cylindrical shape of the inner hole of the middle endoporus, cylindrical and the multistage throttle assembly that insert multistage throttle assembly from sealing surface lower end at spool or mangetic core assembly, the upper end of throttle sleeve has multiple through-flow window; The epicoele of valve body is communicated with the medium inlet end of the valve of horizontal arrangement, and have the cavity of the annular flowed out in orifice union for medium in the outside of multistage throttle assembly, media outlet end is arranged on valve body lower end, direction down, in 90 ° crossing with medium inlet end; From being positioned at the cavity of annular of valve body cavity of resorption to the annular exit passage being outside equipped with two balanced configurations, annular exit passage is from cavity extraction rear to lower turn and turn to the passage at media outlet end place gradually, article two, annular exit passage is communicated with media outlet end after lower end is converged, and the runner center line of two annular exit passages is positioned at medium inlet end and media outlet end place plane orthogonal and in plane by valve body vertical center line.
In order to improve using effect, in the upside of the body cavity of the concourse of two annular exit passages, be provided with downward protrusion, shunting flange along the taper extended with the direction of the runner center line place plane orthogonal of annular exit passage.
The beneficial effects of the utility model are: the high-pressure differential valve structure of the angie type valve body adopting the utility model to propose, contribute to the sealing reliability of guarantee valve and washing away and cavitation erosion of sealing surface during reduction small guide vane, the supporting and installation needs of unit and system can be met better.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the labyrinth minimum flow valve of existing structure-CCI company of U.S. angie type valve body structure.
Fig. 2 is the structural representation of the High Pressure Difference adjustment class valve disclosed in ZL201420044593.7 patent.
Fig. 3 is the structural representation of the high-pressure differential valve of the angie type valve body that the utility model proposes.
Fig. 4 is the left view of the high-pressure differential valve structure of the angie type valve body shown in Fig. 3.
Fig. 5 is the outline drawing of high-pressure differential valve structure when the non-cutting in orientation shown in Fig. 4 of angie type valve body of the present utility model.
In figure, 1, valve body; 1-1, medium inlet end; 1-2, media outlet end; 1-3, annular exit passage; 1-4, shunting flange; 2, valve seat; 3, spool or mangetic core assembly; 3-1, throttle sleeve; 4, multistage throttle assembly; 5, cavity.
Embodiment
Below in conjunction with drawings and Examples, the technical solution of the utility model is further elaborated.
As shown in Fig. 3 ~ Fig. 5, it is the schematic diagram of a specific embodiment of the high-pressure differential valve structure of the angie type valve body that the utility model proposes, the high-pressure differential valve structure of this angie type valve body has the cobalt-based sealing surface through built-up welding and processing respectively on spool or mangetic core assembly (3) and valve seat (2), both sealing surfaces match when valve closing, in the middle of the epicoele that valve seat (2) is positioned at valve body (1) and cavity of resorption, the below of valve seat (2) is multistage throttle assembly (4); The main body of spool or mangetic core assembly (3) and the sealing surface on it are positioned at the top of valve seat (2), down be extended with the throttle sleeve (3-1) of the cylindrical shape of the inner hole of the middle endoporus, cylindrical and the multistage throttle assembly (4) that insert multistage throttle assembly (4) from sealing surface lower end at spool or mangetic core assembly (3), the upper end of throttle sleeve (3-1) has multiple through-flow window, throttle sleeve (3-1) can move up and down in the endoporus of multistage throttle assembly (4) change medium outflow area with adjust flux.The epicoele of valve body (1) is communicated with the medium inlet end (1-1) of the valve of horizontal arrangement, has the cavity (5) of the annular flowed out in orifice union for medium in the outside of multistage throttle assembly (4), media outlet end (1-2) is arranged on valve body (1) lower end, direction down, in 90 ° crossing with medium inlet end (1-1), from being positioned at the cavity (5) of annular of valve body (1) cavity of resorption to the annular exit passage (1-3) being outside equipped with two balanced configurations, annular exit passage (1-3) is from cavity (5) extraction rear to lower turn and turn to the passage at media outlet end (1-2) place gradually, article two, annular exit passage (1-3) is communicated with media outlet end (1-2) after lower end is converged, article two, the runner center line of annular exit passage (1-3) is positioned at medium inlet end (1-1) and media outlet end (1-2) place plane orthogonal and passes through in the plane of valve body vertical center line.
In the upside of the body cavity of the concourse of two annular exit passages (1-3), be provided with downward protrusion, shunting flange (1-4) along the taper extended with the direction of the runner center line place plane orthogonal of annular exit passage (1-3).
Above-mentioned multistage throttle assembly (4) refers to usual the adopted porous restriction sleeve of high-differential-pressure regulating valve or multistage porous restriction sleeve, labyrinth throttling disc group, multi-layer porous throttling disc group and other the throttle structure with decompression reduction of speed ability preferably; The High Pressure Difference multistage throttle assembly (4) that falls of the present embodiment adopts labyrinth throttling disc group, has excellent step-down reduction of speed performance.Spool or mangetic core assembly (3) both can be single spools, also can be formed by by realizing certain functional requirement such as leading type spool, multi-sealed etc. and some parts arranged.
When valve runs, spool or mangetic core assembly (3) are opened, medium enters the epicoele of valve body (1) by medium inlet end (1-1), through-flow window on the throttle sleeve (3-1) of spool or mangetic core assembly (3) lower end and the endoporus of throttle sleeve (3-1) are circulated to the inner chamber of multistage throttle assembly (4), moved up and down by the driving mechanism band movable valve plug of valve or the throttle sleeve (3-1) of mangetic core assembly (3) lower end and regulate, making a certain amount of medium from multistage throttle assembly (4)--the inner chamber of labyrinth throttling disc group flows out to the cavity (5) of the annular between valve body (1) and multistage throttle assembly (4) through labyrinth channel, branch to the annular exit passage (1-3) of both sides from cavity (5) again and be circulated to media outlet end (1-2) through annular exit passage (1-3) is roundabout.
Because two annular exit passages (1-3) can form strong disturbance at the medium concourse of lower end, vortex can be formed in the upside of middle concourse body cavity, thus stronger vibration and noise can be brought, therefore on the upside of the body cavity of the concourse of annular exit passage (1-3), the shunting flange (1-4) of the taper protruded downwards is set, shunting flange (1-4) is along extending with the direction of the runner center line place plane orthogonal of annular exit passage (1-3), shunting flange (1-4) is made to traverse on a left side, between right annular exit passage (1-3), the surface of shunting flange (1-4) and water passage surface rounding off.The setting of shunting flange (1-4) changes the molded line of runner and the streamline of medium, makes two bursts of MEDIA FLOW more gently turn to, intersect, converge, thus effectively can reduce vibration and the noise of valve.
Below done to illustrate to the technical solution of the utility model in conjunction with the accompanying drawings and embodiments, but these accompanying drawings and explanation can not be understood to limit scope of the present utility model.Those skilled in the art should know; the utility model is not subject to the restriction of above-described embodiment and accompanying drawing; its protection domain defined by appending claims; any in the technological scheme not exceeding the various changes in the scope that the utility model claims define, modification is formed; all do not depart from spirit of the present utility model and technical spirit, still can belong within right of the present utility model.
Claims (2)
1. the high-pressure differential valve of an angie type valve body, described valve on spool or mangetic core assembly (3) and valve seat (2), have sealing surface respectively and at valve closing time match, in the middle of the epicoele that valve seat (2) is positioned at valve body (1) and cavity of resorption, the below of valve seat (2) is multistage throttle assembly (4), the middle endoporus inserting multistage throttle assembly (4) is down extended with from sealing surface lower end at spool or mangetic core assembly (3), upper end has the throttle sleeve (3-1) of the cylindrical shape of multiple through-flow window, the epicoele of valve body (1) is communicated with the medium inlet end (1-1) of the valve of horizontal arrangement, the cavity (5) of the annular flowed out in orifice union for medium is had in the outside of multistage throttle assembly (4), media outlet end (1-2) is arranged on valve body (1) lower end, direction down, in 90 ° crossing with medium inlet end (1-1), it is characterized in that: from being positioned at the cavity (5) of annular of valve body (1) cavity of resorption to the annular exit passage (1-3) being outside equipped with two balanced configurations, annular exit passage (1-3) is from cavity (5) extraction rear to lower turn and turn to the passage at media outlet end (1-2) place gradually, article two, annular exit passage (1-3) is communicated with media outlet end (1-2) after lower end is converged, article two, the runner center line of annular exit passage (1-3) is positioned at medium inlet end (1-1) and media outlet end (1-2) place plane orthogonal and passes through in the plane of valve body vertical center line.
2. the high-pressure differential valve of angie type valve body according to claim 1, it is characterized in that: in the upside of the body cavity of the concourse of two annular exit passages (1-3), be provided with downward protrusion, shunting flange (1-4) along the taper extended with the direction of the runner center line place plane orthogonal of annular exit passage (1-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420502890.1U CN204083283U (en) | 2014-09-02 | 2014-09-02 | A kind of high-pressure differential valve of angie type valve body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420502890.1U CN204083283U (en) | 2014-09-02 | 2014-09-02 | A kind of high-pressure differential valve of angie type valve body |
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| Publication Number | Publication Date |
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| CN204083283U true CN204083283U (en) | 2015-01-07 |
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| CN201420502890.1U Expired - Fee Related CN204083283U (en) | 2014-09-02 | 2014-09-02 | A kind of high-pressure differential valve of angie type valve body |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096960A (en) * | 2020-09-24 | 2020-12-18 | 华中科技大学 | Novel throttle is to towards formula decompression accuse fast governing valve |
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2014
- 2014-09-02 CN CN201420502890.1U patent/CN204083283U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096960A (en) * | 2020-09-24 | 2020-12-18 | 华中科技大学 | Novel throttle is to towards formula decompression accuse fast governing valve |
| CN112096960B (en) * | 2020-09-24 | 2021-06-29 | 华中科技大学 | Novel throttle is to towards formula decompression accuse fast governing valve |
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| DD01 | Delivery of document by public notice |
Addressee: Zhang Hua Document name: Notification to Pay the Fees |
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| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20180902 |
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| CF01 | Termination of patent right due to non-payment of annual fee |