CN204985775U - Adjustable stop valve - Google Patents
Adjustable stop valve Download PDFInfo
- Publication number
- CN204985775U CN204985775U CN201520714087.9U CN201520714087U CN204985775U CN 204985775 U CN204985775 U CN 204985775U CN 201520714087 U CN201520714087 U CN 201520714087U CN 204985775 U CN204985775 U CN 204985775U
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- valve
- spool
- adjustable stop
- pod apertures
- medium
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Abstract
The utility model relates to a valve, especially, relate to an adjustable stop valve. This adjustable stop valve, which comprises the following components: a valve body, case and valve rod, be provided with and get into the valve pocket that end and outlet side are linked together inside the valve body, be provided with the disk seat in the valve pocket, be provided with oriented slant on the disk seat, be provided with the sealed inclined plane with oriented slant matched with on the case, the case links to each other with the valve rod is integrative, the case below is provided with decompression direction head, decompression direction head links to each other with the one end that the case is close to sealed inclined plane, decompression direction head is including spliced pole and decompression portion, the spliced pole links to each other with the case is integrative, decompression portion is the segment form, be provided with the decompression groove between decompression portion and the spliced pole, be provided with a plurality of water conservancy diversion hole on the disk seat, the one end in water conservancy diversion hole is located oriented slant, the other end is located the disk seat inside wall. The utility model discloses the regulated flow has effectively, slow down the valve of flowing through the medium vibration, avoid that the valve seal face receives flash distillation and cavitation erosion wash away, guarantee beneficial effect such as medium steady flow.
Description
Technical field
The utility model relates to a kind of valve, especially relates to a kind of adjustable stop valve.
Background technique
Current high temperature, normal temperature, height, middle pressure, small-bore stop valve be a sealing valve port face normally, and when small guide vane, sealing valve port face can be subject to washing away of serious flash distillation and cavitation erosion, reduces the working life of valve.Current small-bore stop valve is quick-opening structure mostly, utilize when opening valve fast to reduce valve small guide vane and the cavitation erosion of sealing surface is washed away, but this kind of valve does not have regulating action, and fixed valve seat is in the majority, even dismountable valve seat, dismounting is also inconvenient, needs by special tool.Conventional small-bore stop valve forging valve body needs forging mould, and the higher valve cost of production that causes of die cost is high.
Model utility content
The utility model mainly for the problems referred to above, provide a kind of can effectively adjust flux, slow down flow through valve vibration of media, avoid valve sealing face to be subject to the washing away of flash distillation and cavitation erosion, to ensure the stop valve that media stabilize flows.
The purpose of this utility model is mainly achieved by following proposal: a kind of adjustable stop valve, comprise valve body, spool and valve rod, described valve inner is provided with the valve pocket be connected with exhaust end with inlet end, valve seat is provided with in valve pocket, valve seat is provided with guiding surface, spool is provided with the sealing inclined-plane matched with guiding surface, spool is connected with valve-stem integrated, decompression guide head is provided with below spool, decompression guide head is connected near the one end sealing inclined-plane with spool, decompression guide head comprises attachment post and relief portion, attachment post is connected with spool one, relief portion is segment shape, decompressing groove is provided with between relief portion and attachment post, valve seat is provided with several pod apertures, one end of pod apertures is positioned on guiding surface, the other end is positioned at valve seat madial wall.Medium entered inlet end and entered in valve pocket, then by outside exhaust end discharge valve.When valve closes, rotary valve rod, valve rod band movable valve plug moves towards the valve seat direction in valve pocket, when the sealing inclined-plane on spool and the guiding surface on valve seat are fitted, can realize the sealing of valve pocket, and then realizes the closed of valve.When valve small guide vane, namely seal inclined-plane and guiding surface gap less time, the gap of medium between sealing inclined-plane and guiding surface, is reduced pressure by decompression guide head to medium, slows down vibrations, prevent medium from washing away sealing inclined sheet cavitation.MEDIA FLOW is through the gap between sealing inclined-plane and guiding surface, the decompressing groove between attachment post and relief portion is arrived through attachment post, decompressing groove to the medium buffering flowed through and can store, along with medium continues flowing, medium through decompressing groove is reduced pressure and guiding by the relief portion of segment shape, effectively can reduce vibration of media to wash away sealing inclined-plane, extend spool working life.When flowing through the gap between sealing inclined-plane and guiding surface, owing to valve seat being arranged several pod apertures, one end of pod apertures is positioned on guiding surface, and certain media enters pod apertures, is directly discharged by pod apertures, without the need to contacting with spool.Effectively by pod apertures to medium drainage, decompression, slow down medium washing away the sealing inclined-plane of spool further, reduce the sealing cavitation erosion on inclined-plane and wearing and tearing.
As preferably, the section of described pod apertures is class " L " shape, and pod apertures comprises conduction hole and pilot hole, and the axis of conduction hole and the axis angle of pilot hole are acute angle, and the elongation line of pilot hole axis is identical with the radius of relief portion.Pod apertures comprises conduction hole and pilot hole, conduction hole is communicated with the pod apertures that formation section is " L " shape with pilot hole, the axis of conduction hole and the axis angle of pilot hole are acute angle, the circulation path of further increase pod apertures, pod apertures can to medium drainage and guiding, reduce the amount of the medium contacted with spool, and then reduce medium washing away spool.The elongation line of pilot hole axis is identical with the radius of relief portion, namely pilot hole can to the medium guiding flowing through pilot hole, making medium flow out the acceleration direction of pilot hole is axial direction along pilot hole, when the pressure medium flowing through pod apertures is less, medium is subject to Action of Gravity Field after discharging pilot hole, avoids contacting with the relief portion of the guide head that reduces pressure.When the pressure medium flowing through pod apertures is larger, medium discharge pilot hole and along pilot hole axis discharge impact in relief portion, because the axis elongation line of pilot hole is identical with the radius of the relief portion of segment shape, then during spool small guide vane, impact reverse close to vertical relief portion of media impingement direction in relief portion, avoid medium and relief portion tangentially to wash away, reduce the wearing and tearing of relief portion.
The section of described pod apertures also can be in the shape of a spiral.Pod apertures can to the medium drainage flowing through pod apertures, and spiral helicine pod apertures can extend the path of pod apertures, plays certain memory action, increases the amount flowing through medium in pod apertures, and then reduces the amount of the medium contacted with spool.
As preferably, described valve pocket top is provided with the setting sleeve for locating valve rod, is provided with valve cage cover between setting sleeve and valve seat, and valve cage puts and is densely covered with slow pressure hole.Valve pocket top is provided with the setting sleeve for locating valve rod, and setting sleeve can be located valve rod, makes valve rod remain axial-movement, avoids valve rod axis to tilt.Valve cage cover is provided with between setting sleeve and valve seat, valve cage puts and is densely covered with slow pressure hole, the medium that inlet end enters enters in valve pocket, put densely covered slow pressure hole by valve cage again and enter valve cage cover inside, finally enter outside exhaust end discharge valve by valve pocket, valve cage cover can play the effect of slow pressure and voltage stabilizing to the medium poured in valve pocket, reduce vibration of media, and then the cavitation erosion of reduction medium to spool is washed away.
As preferably, described valve cage cover comprises flexible buffer cover and is positioned at the positioning ring that flexible buffer overlaps upper and lower two ends, positioning ring and valve seat and setting sleeve interference fit, slowly presses hole to be positioned at flexible buffer to put.Valve cage cover comprises flexible buffer cover and is positioned at the positioning ring that flexible buffer overlaps upper and lower two ends, positioning ring is used for being connected and fixed with valve seat and setting sleeve, and flexible buffer cover is positioned between upper and lower two positioning rings, MEDIA FLOW is when the slow pressure hole that flexible buffer puts, flexible buffer cover can be out of shape according to the pressure difference of medium diverse location, improves voltage regulation result further.
As preferably, described decompressing groove is U-type groove.Decompressing groove is U-type groove, and U-type groove to medium guiding, the gentle pressure of storage flowing through decompressing groove, and can avoid the medium reverse impact spool of exhaust end.
Described decompressing groove also can be the thread groove around valve rod axis.Screw-shaped decompressing groove can to the medium guiding flowing through decompressing groove, and screw-shaped decompressing groove path increases, and improves slow pressure and voltage regulation result.
As preferably, valve rod, spool and decompression guide head are one-body molded.Valve rod, spool and decompression guide head can adopt steel column turning, grinding shaping, and without the need to adopting mould, machining accuracy is high, and cost is low.
As preferably, valve body comprises valve and lower valve, and upper valve is connected with lower valve bolt, and valve pocket is positioned on lower valve, and lower valve is structure as a whole, and upper valve is structure as a whole.Valve body comprises valve and lower valve two parts, and upper valve is connected with lower valve bolt, and valve pocket is positioned on lower valve, directly can process valve pocket on lower valve, and without the need to adopting die casting, steel material can be adopted to process, and machining accuracy is high, cost is low.
As preferably, be connected with connection chamber below valve pocket, inlet end is connected with valve pocket by inlet passage, and exhaust end is connected with connection chamber by discharge route, and valve seat is positioned at the joint of valve pocket and connection chamber.
Therefore, adjustable stop valve of the present utility model possesses following advantage: when valve small guide vane, namely seal inclined-plane and guiding surface gap less time, the gap of medium between sealing inclined-plane and guiding surface, by decompression guide head, medium is reduced pressure, slows down vibrations, prevent medium from washing away sealing inclined sheet cavitation.MEDIA FLOW is through the gap between sealing inclined-plane and guiding surface, the decompressing groove between attachment post and relief portion is arrived through attachment post, decompressing groove to the medium buffering flowed through and can store, along with medium continues flowing, medium through decompressing groove is reduced pressure and guiding by the relief portion of segment shape, effectively can reduce vibration of media to wash away sealing inclined-plane, extend spool working life.When flowing through the gap between sealing inclined-plane and guiding surface, owing to valve seat being arranged several pod apertures, one end of pod apertures is positioned on guiding surface, and certain media enters pod apertures, is directly discharged by pod apertures, without the need to contacting with spool.Effectively by pod apertures to medium drainage, decompression, slow down medium washing away the sealing inclined-plane of spool further, reduce the sealing cavitation erosion on inclined-plane and wearing and tearing.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of structural representation of the present utility model;
Accompanying drawing 2 is the partial enlarged drawings at valve pocket place in the utility model;
Accompanying drawing 3 be in accompanying drawing 2 A place in embodiment 1 spool small guide vane time partial enlarged drawing;
Accompanying drawing 4 is plan views of valve seat in the utility model;
Accompanying drawing 5 be in accompanying drawing 2 A place in example 2 spool small guide vane time partial enlarged drawing.
Illustrate: 01-valve body, the upper valve of 011-, valve under 012-, 0121-valve pocket, 013-inlet passage, 014-connection chamber, 015-discharge route, 02-valve rod, 03-spool, 031-seals inclined-plane, 04-reduces pressure guide head, 041-attachment post, 042-relief portion, 043-decompressing groove, 05-valve seat, 051-guiding surface, 06-setting sleeve, 07-valve cage cover, 071-slow pressure hole, 072-flexible buffer cover, 073-positioning ring, 08-pod apertures, 081-conduction hole, 082-pilot hole, 09-inlet end, 10-exhaust end.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1: as shown in Fig. 1,2,4, a kind of adjustable stop valve, comprise valve body 01, spool 03 and valve rod 02, valve inner is provided with the valve pocket 0121 be connected with exhaust end 10 with inlet end 09, is provided with valve seat, valve seat is provided with guiding surface 051 in valve pocket, spool is provided with the sealing inclined-plane 031 matched with guiding surface, spool is connected with valve-stem integrated, is provided with decompression guide head 04 below spool, and decompression guide head is connected near the one end sealing inclined-plane with spool.Decompression guide head comprises attachment post 041 and relief portion 042, attachment post is connected with spool one, relief portion is segment shape, decompressing groove 043 is provided with between relief portion and attachment post, decompressing groove is U-type groove, valve seat 05 is provided with several pod apertures, one end of pod apertures is positioned on guiding surface, the other end is positioned at valve seat madial wall.The section of pod apertures is class " L " shape, and pod apertures 08 comprises conduction hole 081 and pilot hole 082, and the axis of conduction hole and the axis angle of pilot hole are acute angle, and the elongation line of pilot hole axis is identical with the radius of relief portion.Valve pocket top is provided with the setting sleeve 06 for locating valve rod, is provided with valve cage cover between setting sleeve and valve seat, and valve cage puts and is densely covered with slow pressure hole 071.Valve cage cover 07 comprises flexible buffer cover 072 and be positioned at the positioning ring 073 that flexible buffer overlaps upper and lower two ends, positioning ring and valve seat and setting sleeve interference fit, slowly presses hole to be positioned at flexible buffer to put.Valve rod, spool and decompression guide head are one-body molded.Valve body comprises valve 011 and lower valve 012, and upper valve is connected with lower valve bolt, and valve pocket is positioned on lower valve, and lower valve is structure as a whole, and upper valve is structure as a whole.Be connected with connection chamber 014 below valve pocket, inlet end is connected with valve pocket by inlet passage 013, and exhaust end is connected with connection chamber by discharge route 015, and valve seat is positioned at the joint of valve pocket and connection chamber.
Medium entered inlet end and entered in valve pocket, then by outside exhaust end discharge valve.When valve closes, rotary valve rod, valve rod band movable valve plug moves towards the valve seat direction in valve pocket, when the sealing inclined-plane on spool and the guiding surface on valve seat are fitted, can realize the sealing of valve pocket, and then realizes the closed of valve.When valve small guide vane, as shown in Figure 3, namely seal inclined-plane and guiding surface gap less time, the gap of medium between sealing inclined-plane and guiding surface, is reduced pressure by decompression guide head to medium, slows down vibrations, prevent medium from washing away sealing inclined sheet cavitation.MEDIA FLOW is through the gap between sealing inclined-plane and guiding surface, the decompressing groove between attachment post and relief portion is arrived through attachment post, decompressing groove to the medium buffering flowed through and can store, along with medium continues flowing, medium through decompressing groove is reduced pressure and guiding by the relief portion of segment shape, effectively can reduce vibration of media to wash away sealing inclined-plane, extend spool working life.When flowing through the gap between sealing inclined-plane and guiding surface, owing to valve seat being arranged several pod apertures, one end of pod apertures is positioned on guiding surface, and certain media enters pod apertures, is directly discharged by pod apertures, without the need to contacting with spool.Effectively by pod apertures to medium drainage, decompression, slow down medium washing away the sealing inclined-plane of spool further, reduce the sealing cavitation erosion on inclined-plane and wearing and tearing.Pod apertures comprises conduction hole and pilot hole, conduction hole is communicated with the pod apertures that formation section is " L " shape with pilot hole, the axis of conduction hole and the axis angle of pilot hole are acute angle, the circulation path of further increase pod apertures, pod apertures can to medium drainage and guiding, reduce the amount of the medium contacted with spool, and then reduce medium washing away spool.The elongation line of pilot hole axis is identical with the radius of relief portion, namely pilot hole can to the medium guiding flowing through pilot hole, making medium flow out the acceleration direction of pilot hole is axial direction along pilot hole, when the pressure medium flowing through pod apertures is less, medium is subject to Action of Gravity Field after discharging pilot hole, avoids contacting with the relief portion of the guide head that reduces pressure.When the pressure medium flowing through pod apertures is larger, medium discharge pilot hole and along pilot hole axis discharge impact in relief portion, because the axis elongation line of pilot hole is identical with the radius of the relief portion of segment shape, then during spool small guide vane, impact reverse close to vertical relief portion of media impingement direction in relief portion, avoid medium and relief portion tangentially to wash away, reduce the wearing and tearing of relief portion.Valve pocket top is provided with the setting sleeve for locating valve rod, and setting sleeve can be located valve rod, makes valve rod remain axial-movement, avoids valve rod axis to tilt.Valve cage cover is provided with between setting sleeve and valve seat, valve cage puts and is densely covered with slow pressure hole, the medium that inlet end enters enters in valve pocket, put densely covered slow pressure hole by valve cage again and enter valve cage cover inside, finally enter outside exhaust end discharge valve by valve pocket, valve cage cover can play the effect of slow pressure and voltage stabilizing to the medium poured in valve pocket, reduce vibration of media, and then the cavitation erosion of reduction medium to spool is washed away.Valve cage cover comprises flexible buffer cover and is positioned at the positioning ring that flexible buffer overlaps upper and lower two ends, positioning ring is used for being connected and fixed with valve seat and setting sleeve, and flexible buffer cover is positioned between upper and lower two positioning rings, MEDIA FLOW is when the slow pressure hole that flexible buffer puts, flexible buffer cover can be out of shape according to the pressure difference of medium diverse location, improves voltage regulation result further.Decompressing groove is U-type groove, and U-type groove to medium guiding, the gentle pressure of storage flowing through decompressing groove, and can avoid the medium reverse impact spool of exhaust end.Valve rod, spool and decompression guide head can adopt steel column turning, grinding shaping, and without the need to adopting mould, machining accuracy is high, and cost is low.Valve body comprises valve and lower valve two parts, and upper valve is connected with lower valve bolt, and valve pocket is positioned on lower valve, directly can process valve pocket on lower valve, and without the need to adopting die casting, steel material can be adopted to process, and machining accuracy is high, cost is low.
Embodiment 2: the present embodiment is substantially identical with the structure of embodiment 1, difference is, as shown in Figure 5, the section of pod apertures in the shape of a spiral, pod apertures can to the medium drainage flowing through pod apertures, and spiral helicine pod apertures can extend the path of pod apertures, plays certain memory action, increase the amount flowing through medium in pod apertures, and then reduce the amount of the medium contacted with spool.
Should be understood that this embodiment is only not used in restriction scope of the present utility model for illustration of the utility model.In addition should be understood that those skilled in the art can make various changes or modifications the utility model, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the utility model instruction.
Claims (8)
1. an adjustable stop valve, comprise valve body, spool and valve rod, it is characterized in that, described valve inner is provided with the valve pocket be connected with exhaust end with inlet end, valve seat is provided with in valve pocket, valve seat is provided with guiding surface, spool is provided with the sealing inclined-plane matched with guiding surface, spool is connected with valve-stem integrated, decompression guide head is provided with below spool, decompression guide head is connected near the one end sealing inclined-plane with spool, decompression guide head comprises attachment post and relief portion, attachment post is connected with spool one, relief portion is segment shape, valve seat is provided with several pod apertures, one end of pod apertures is positioned on guiding surface, the other end is positioned at valve seat madial wall.
2. adjustable stop valve according to claim 1, it is characterized in that, the section of described pod apertures is class " L " shape, and pod apertures comprises conduction hole and pilot hole, the axis of conduction hole and the axis angle of pilot hole are acute angle, and the elongation line of pilot hole axis is identical with the radius of relief portion.
3. adjustable stop valve according to claim 1, is characterized in that, the section of described pod apertures in the shape of a spiral.
4. the adjustable stop valve according to claim 1 or 2 or 3, is characterized in that, described valve pocket top is provided with the setting sleeve for locating valve rod, is provided with valve cage cover between setting sleeve and valve seat, and valve cage puts and is densely covered with slow pressure hole.
5. adjustable stop valve according to claim 4, is characterized in that, described valve cage cover comprises flexible buffer cover and is positioned at the positioning ring that flexible buffer overlaps upper and lower two ends, positioning ring and valve seat and setting sleeve interference fit, slowly presses hole to be positioned at flexible buffer to put.
6. the adjustable stop valve according to claim 1 or 2 or 3, is characterized in that, valve rod, spool and decompression guide head are one-body molded.
7. the adjustable stop valve according to claim 1 or 2 or 3, is characterized in that, valve body comprises valve and lower valve, and upper valve is connected with lower valve bolt, and valve pocket is positioned on lower valve, and lower valve is structure as a whole, and upper valve is structure as a whole.
8. the adjustable stop valve according to claim 1 or 2 or 3, it is characterized in that, be connected with connection chamber below valve pocket, inlet end is connected with valve pocket by inlet passage, exhaust end is connected with connection chamber by discharge route, and valve seat is positioned at the joint of valve pocket and connection chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520714087.9U CN204985775U (en) | 2015-09-16 | 2015-09-16 | Adjustable stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520714087.9U CN204985775U (en) | 2015-09-16 | 2015-09-16 | Adjustable stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204985775U true CN204985775U (en) | 2016-01-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520714087.9U Active CN204985775U (en) | 2015-09-16 | 2015-09-16 | Adjustable stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204985775U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379862A (en) * | 2018-12-28 | 2020-07-07 | 三菱重工业株式会社 | Steam valve and power generation system |
-
2015
- 2015-09-16 CN CN201520714087.9U patent/CN204985775U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379862A (en) * | 2018-12-28 | 2020-07-07 | 三菱重工业株式会社 | Steam valve and power generation system |
| CN111379862B (en) * | 2018-12-28 | 2022-04-05 | 三菱重工业株式会社 | Steam valve and power generation system |
| US11306607B2 (en) | 2018-12-28 | 2022-04-19 | Mitsubishi Heavy Industries, Ltd. | Steam valve, and power generation system |
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