CN203516886U - Pilot-operated balance valve element of adjusting-type valve - Google Patents
Pilot-operated balance valve element of adjusting-type valve Download PDFInfo
- Publication number
- CN203516886U CN203516886U CN201320631829.2U CN201320631829U CN203516886U CN 203516886 U CN203516886 U CN 203516886U CN 201320631829 U CN201320631829 U CN 201320631829U CN 203516886 U CN203516886 U CN 203516886U
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- valve
- main valve
- valve plug
- valve element
- cage
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- 238000007789 sealing Methods 0.000 claims abstract description 29
- 210000004907 gland Anatomy 0.000 claims description 26
- 239000000956 alloy Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 238000005530 etching Methods 0.000 abstract 1
- 230000003628 erosive effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
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Abstract
The utility model discloses a pilot-operated balance valve element of an adjusting-type valve. The valve element comprises a valve body, a valve cover, a valve base, a main valve element body and a valve rod. The valve cover is fixed to the upper end portion of the valve body, the valve base is installed in the valve body, the upper portion of the valve base is provided with a cage-type outer sleeve and a cage-type inner sleeve, the lower end of the cage-type inner sleeve and the cage-type outer sleeve are respectively provided with a plurality of throttling holes, the main valve element body is installed in the cage-type inner sleeve in a sliding mode, the upper end portion of the main valve element body is provided with a main valve element pressing cover, the valve rod is inserted into the axis of the main valve element pressing cover and the axis of the main valve element body, the bottom end of the valve rod is connected with a pilot-operated valve element body, the inside of the main valve element body is provided with a pilot-operated hole which is matched with a sealing face of the pilot-operated valve element body in a sealed mode, the sealing face at the bottom end of the main valve element body is matched with the sealing face of the valve base in a sealed mode, the portion, extending out of the main valve element pressing cover, of the valve rod is provided with a boss, and a disc spring is arranged between the boss and the upper surface of the main valve element pressing cover. The valve element has the advantages of low leakage and gas etching resistance and can be provided with an actuator with low output force when used.
Description
Technical field
The utility model relates to valve field, particularly a kind of leading type balance valve core that regulates class valve.
Background technique
Leading type balanced seal structure is for big caliber electromagnetic valve technology comparative maturity, and industry is applied to regulate the also more rare of class valve by this structure composition at present, and under some particular medium operating modes, really need a kind of requirement not only had without leak or low leakage ability simultaneously but also have a valve of the performances such as anti-cavitation erosion, and this valve also needs to adopt the final controlling element of less ouput force to replace the final controlling element of high-power or high thrust, to meet demand for control.
Model utility content
For solving the problems of the technologies described above, the purpose of this utility model is to provide a kind of low leakage, anti-cavitation erosion, can configure the leading type balance valve core of adjusting class valve of the final controlling element of less ouput force.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the utility model is achieved through the following technical solutions: a kind of leading type balance valve core that regulates class valve, comprise valve body, valve gap, valve seat, main valve plug and valve rod, valve gap is fixed on the upper end portion of valve body, valve seat is installed in described valve body, described valve seat top is provided with cage outer sleeve and cage inner sleeve, on the lower end of cage inner sleeve and cage outer sleeve, be equipped with some throttle orifices, described main valve plug is slidably installed in described cage inner sleeve, the upper end portion of described main valve plug is provided with main valve plug gland, valve rod is inserted in the axle center of main valve plug gland and place, the axle center of main valve plug, the bottom of described valve rod is connected with guide's spool, the inside of described main valve plug is provided with pilot hole, between the sealing surface of described pilot hole and guide's spool, be sealed and matched, between the sealing surface of described main valve plug bottom and the sealing surface of valve seat, be sealed and matched, the part that described valve rod stretches out main valve plug gland is provided with boss, between the upper surface of described boss and main valve plug gland, be provided with dish spring.
Further, the lower end that connects the valve rod of guide's spool is provided with groove, in groove, coordinate divided ring is installed, main valve plug gland is encapsulated in guide's spool and the valve stem part that divided ring is housed the inside cavity of main valve plug, between described divided ring top and main valve plug gland, is provided with space.
Further, described main valve plug gland is provided with through hole.
Further, between described boss and the upper end of dish spring, be provided with disc spring pad, between the upper surface of described main valve plug gland and the lower end of dish spring, be also provided with disc spring pad.
Further, between the outer wall of described main valve plug and the internal surface of cage inner sleeve, be provided with balanced seal circle.
Further, between described pilot hole and the sealing surface of guide's spool, heap is welded with hard alloy layer.
Further, between the sealing surface of described main valve plug bottom and the sealing surface of valve seat, heap is welded with hard alloy layer.
The beneficial effects of the utility model are: the spool of this structure adopts leading type balance double sealing structure, and utilize dish spring that the sealing surface between main valve plug and valve rod is separated, by the combination of valve rod, dish spring, main valve plug and guide's spool, can reach the function of leading type balance, compare with existing modulating valve, the leakage rate of valve reduces greatly, can reach zero leakage, the in the situation that of equal pressure bore, can configure less final controlling element, the cavitation erosion that also can effectively avoid High Pressure Difference to produce.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structure for amplifying schematic diagram of A part in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that, protection domain of the present utility model is made to more explicit defining.
As depicted in figs. 1 and 2, a kind of leading type balance valve core that regulates class valve, comprise valve body 1, valve gap 2, valve seat 3, main valve plug 4 and valve rod 5, valve gap 2 is fixed on the upper end portion of valve body 1, valve seat 3 is installed in described valve body 1, described valve seat 3 tops are provided with cage outer sleeve 6 and cage inner sleeve 7, on the lower end of cage inner sleeve 7 and cage outer sleeve 6, be equipped with some throttle orifices, described main valve plug 4 is slidably installed in described cage inner sleeve 7, the upper end portion of described main valve plug 4 is provided with main valve plug gland 8, valve rod 5 is inserted in the axle center of main valve plug gland 8 and place, the axle center of main valve plug 4, the bottom of described valve rod 5 is connected with guide's spool 9, the inside of described main valve plug 4 is provided with pilot hole 10, between described pilot hole 10 and the sealing surface of guide's spool 9, be sealed and matched, between the sealing surface of described main valve plug 4 bottoms and the sealing surface of valve seat 3, be sealed and matched, described valve rod 5 is provided with boss 11 in the part of stretching out main valve plug gland 8, between described boss 11 and the upper surface of main valve plug gland 8, be provided with dish spring 12.
The lower end that connects the valve rod 5 of guide's spool 9 is provided with groove, in groove, coordinate divided ring 13 is installed, main valve plug gland 8 is encapsulated in guide's spool 9 and the valve stem part that divided ring 13 is housed the inside cavity of main valve plug 4, between described divided ring 13 tops and main valve plug gland 8, is provided with space.
In the utility model, main valve plug gland 8 is provided with through hole 14.In addition, between boss 11 and the upper end of dish spring 12, be provided with disc spring pad 15, between the upper surface of main valve plug gland 8 and the lower end of dish spring 12, be also provided with disc spring pad 15.
Between the internal surface of the outer wall of main valve plug 4 and cage inner sleeve 7, be provided with high performance balanced seal circle 16.This balanced seal circle 16 has superior elasticity self-adapting seal performance and sealability, can guarantee the sealing between main valve plug 4 and cage inner sleeve 7, guarantees that the medium on main valve plug top can not leak during valve closing.
Between described pilot hole 10 and the sealing surface of guide's spool 9, heap is welded with hard alloy layer, between the sealing surface of described main valve plug 4 bottoms and the sealing surface of valve seat 3, also heap is welded with hard alloy layer, the sealability that improves valve, reaches zero leakage, improves the life-span of sealing surface.
Valve body 1 is provided with media flow passage.When valve opening, main valve plug gland 8 is subject to the elastic force of dish spring 12, valve rod 5 is first opened guide's spool 9, first open pilot hole 10, main valve plug 4 tops by the pressure in the cavity forming between cage inner sleeve 7 and valve gap 2 first by pilot hole 10 pressure releases, unbalanced force suffered on main valve plug 4 is reduced rapidly, reach epicoele and the cavity of resorption pressure balance of main valve plug 4, it is the aperture of adjustable gate that final controlling element only needs a less power.
Between valve rod 5 and main valve plug gland 8, adopt disk spring compressing structure, when valve closing, main valve plug 4 first contacts with valve seat 3, the now epicoele of main valve plug 4 and cavity of resorption pressure balance, the equilibrant of the pressure-acting of medium on main valve plug 4 replaces main valve plug 4 and the needed sealing load of valve seat 3, only need less thrust on valve rod 5, just can make main valve plug 4 and valve seat 3 sealing surfaces be adjacent to, then less power of final controlling element output, by valve rod 5 toward pressing down, can seal guide's spool 9 and pilot hole 10.After valve closing, guide's spool 9 and pilot hole 10 sealings, main valve plug 4 and valve seat 3 sealings, main valve plug 4 tops are full of medium, medium masterpiece is for main valve plug 4, and the unbalanced force of medium can be so that do not need External Force Acting to get final product good seal between main valve plug 4 and valve seat 3.
Leading type balanced design of the present utility model is applied to the modulating valve of heavy caliber or high pressure, can adopt the final controlling element of a less ouput force to replace the final controlling element of high-power or high thrust, just can meet demand for control, can reduce energy consumption, reduce product cost, and reduce the volume of valve, and save installing space, facilitate customer care.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (7)
1. a leading type balance valve core that regulates class valve, comprise valve body, valve gap, valve seat, main valve plug and valve rod, valve gap is fixed on the upper end portion of valve body, valve seat is installed in described valve body, it is characterized in that: described valve seat top is provided with cage outer sleeve and cage inner sleeve, on the lower end of cage inner sleeve and cage outer sleeve, be equipped with some throttle orifices, described main valve plug is slidably installed in described cage inner sleeve, the upper end portion of described main valve plug is provided with main valve plug gland, valve rod is inserted in the axle center of main valve plug gland and place, the axle center of main valve plug, the bottom of described valve rod is connected with guide's spool, the inside of described main valve plug is provided with pilot hole, between the sealing surface of described pilot hole and guide's spool, be sealed and matched, between the sealing surface of described main valve plug bottom and the sealing surface of valve seat, be sealed and matched, the part that described valve rod stretches out main valve plug gland is provided with boss, between the upper surface of described boss and main valve plug gland, be provided with dish spring.
2. the leading type balance valve core of adjusting class valve according to claim 1, it is characterized in that: the lower end that connects the valve rod of guide's spool is provided with groove, in groove, coordinate divided ring is installed, main valve plug gland is encapsulated in guide's spool and the valve stem part that divided ring is housed the inside cavity of main valve plug, between described divided ring top and main valve plug gland, is provided with space.
3. the leading type balance valve core of adjusting class valve according to claim 1, is characterized in that: described main valve plug gland is provided with through hole.
4. the leading type balance valve core of adjusting class valve according to claim 1, is characterized in that: between described boss and the upper end of dish spring, be provided with disc spring pad, between the upper surface of described main valve plug gland and the lower end of dish spring, be also provided with disc spring pad.
5. the leading type balance valve core of adjusting class valve according to claim 1, is characterized in that: between the outer wall of described main valve plug and the internal surface of cage inner sleeve, be provided with balanced seal circle.
6. the leading type balance valve core of adjusting class valve according to claim 1, is characterized in that: between described pilot hole and the sealing surface of guide's spool, heap is welded with hard alloy layer.
7. the leading type balance valve core of adjusting class valve according to claim 1, is characterized in that: between the sealing surface of described main valve plug bottom and the sealing surface of valve seat, heap is welded with hard alloy layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320631829.2U CN203516886U (en) | 2013-10-14 | 2013-10-14 | Pilot-operated balance valve element of adjusting-type valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320631829.2U CN203516886U (en) | 2013-10-14 | 2013-10-14 | Pilot-operated balance valve element of adjusting-type valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516886U true CN203516886U (en) | 2014-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320631829.2U Expired - Lifetime CN203516886U (en) | 2013-10-14 | 2013-10-14 | Pilot-operated balance valve element of adjusting-type valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516886U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925378A (en) * | 2014-04-29 | 2014-07-16 | 昆山维萨阀门有限公司 | Multi-purpose adjusting type stop valve |
| CN104315211A (en) * | 2014-09-30 | 2015-01-28 | 中国石油天然气股份有限公司 | Variable-throat-diameter safety valve |
| CN104315210A (en) * | 2014-09-30 | 2015-01-28 | 中国石油天然气股份有限公司 | Variable-throat-diameter safety valve |
| CN104976363A (en) * | 2015-06-25 | 2015-10-14 | 北京奥盛兰石油技术服务有限公司 | High-pressure valve |
| CN107387864A (en) * | 2017-08-29 | 2017-11-24 | 广东粤电靖海发电有限公司 | A kind of balanced high pressure differential regulating valve with accumulation of energy storage laminated structure |
| CN108506541A (en) * | 2018-05-29 | 2018-09-07 | 艾坦姆流体控制技术（北京）有限公司 | Pilot-operated type adjusting valve |
-
2013
- 2013-10-14 CN CN201320631829.2U patent/CN203516886U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925378A (en) * | 2014-04-29 | 2014-07-16 | 昆山维萨阀门有限公司 | Multi-purpose adjusting type stop valve |
| CN104315211A (en) * | 2014-09-30 | 2015-01-28 | 中国石油天然气股份有限公司 | Variable-throat-diameter safety valve |
| CN104315210A (en) * | 2014-09-30 | 2015-01-28 | 中国石油天然气股份有限公司 | Variable-throat-diameter safety valve |
| CN104315210B (en) * | 2014-09-30 | 2017-08-04 | 中国石油天然气股份有限公司 | The safety valve in variable larynx footpath |
| CN104976363A (en) * | 2015-06-25 | 2015-10-14 | 北京奥盛兰石油技术服务有限公司 | High-pressure valve |
| CN107387864A (en) * | 2017-08-29 | 2017-11-24 | 广东粤电靖海发电有限公司 | A kind of balanced high pressure differential regulating valve with accumulation of energy storage laminated structure |
| CN108506541A (en) * | 2018-05-29 | 2018-09-07 | 艾坦姆流体控制技术（北京）有限公司 | Pilot-operated type adjusting 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 |
Granted publication date: 20140402 |
|
| CX01 | Expiry of patent term |