CN202182222U - Piston type balanced self-reliance pressure-regulating valve - Google Patents
Piston type balanced self-reliance pressure-regulating valve Download PDFInfo
- Publication number
- CN202182222U CN202182222U CN2011202700819U CN201120270081U CN202182222U CN 202182222 U CN202182222 U CN 202182222U CN 2011202700819 U CN2011202700819 U CN 2011202700819U CN 201120270081 U CN201120270081 U CN 201120270081U CN 202182222 U CN202182222 U CN 202182222U
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- China
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- valve
- piston
- regulating
- pressure
- piston type
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Abstract
A piston type balanced self-reliance pressure-regulating valve relates to the technical field of regulating valves and comprises a valve body, a valve seat, a valve plug, a valve cover, a regulating disc, a piston type actuating mechanism and a valve rod. The valve plug and the valve rod are inserted in the valve cover, the regulating disc is arranged on the outside of the valve cover in connected mode, regulating disc is elastically connected and fixed on a spring seat on the valve rod, the lower end of the valve plug and the valve seat are arranged in matched mode, piston type actuating mechanism is arranged at the upper end of the valve rod in matched mode, a piston is arranged at the lower end of the valve plug in a sleeved mode, the piston is in sliding fit with a piston guide sleeve arranged in the valve body or the lower end of the valve cover, a balance long hole is arranged in the middle of the lower end of the valve plug, and the balance long hole is is communicated with a valve cover cavity. The piston type balanced self-reliance pressure-regulating valve is simple in structure and reasonable in design, the regulating valves adopting the structure remove unbalanced force produced by medium pressure under high differential pressure, and enable regulating performance of the whole valve to be free of influences of medium pressure oscillation, and improve regulating accuracy.
Description
Technical field
The utility model belongs to the modulating valve technical field, is specifically related to a kind of piston type balance type self-contained pressure regulator.
Background technique
Self-contained pressure regulator need not external energy (need not additional power source or source of the gas), utilizes and is transferred the medium self-energy as power source; Introduce the actuating mechanism controls valve element position; Change circulation area, change the pressure reduction at two ends, thereby make downstream pressure be stabilized in setting value.Have and be active in one's movements, good airproof performance, characteristics such as pressure surge is little, and return difference is little are widely used in the various industry equipments the automatic control occasion to gas, liquid decompression voltage stabilizing.In recent years, the develop rapidly of domestic valve industry, the product structure type of each valve producer emerges in an endless stream, and existing self-contained pressure regulator is conventional non-equilibrium structure and bellows balance type structure mostly.Adopt the modulating valve of said structure to receive the influence of pressure medium fluctuation bigger, reduced precision.
The model utility content
Problem to the existing technology existence; The purpose of the utility model is to provide a kind of technological scheme of piston type balance type self-contained pressure regulator; This valve with piston as balancing component; Can be under the High Pressure Difference operating mode pressure balance before and after the valve, when the upstream pressure fluctuation was big, downstream pressure stability height and leakage rate were little.
Described a kind of piston type balance type self-contained pressure regulator; Comprise valve body, valve seat, spool, valve gap, adjustment disk, piston actuator and valve rod; Described spool and valve rod are interspersed to be arranged in the valve gap, and outer connection of valve gap is provided with adjustment disk, and adjustment disk elasticity is fastened on the spring seat on the valve rod; The lower end and the valve seat of described spool are equipped with; Described valve rod upper end is equipped with piston actuator, it is characterized in that the lower end socket of described spool is provided with piston, and piston is slidingly matched with the piston guide bush or the valve gap lower end that are fixedly installed in the valve body.
Described a kind of piston type balance type self-contained pressure regulator is characterized in that described piston is spirally connected or welds the lower end that is arranged on spool.
Described a kind of piston type balance type self-contained pressure regulator is characterized in that being equipped with between described piston and the piston guide bush O RunddichtringO.
Described a kind of piston type balance type self-contained pressure regulator is characterized in that described piston and valve gap lower end are equipped with the O RunddichtringO.
Above-mentioned a kind of piston type balance type self-contained pressure regulator; Simple in structure; Reasonable in design, piston is set on spool, piston guide bush is set on valve body or with valve gap as piston guide bush; Center spool is made a call to a balance slotted hole, and valve seat, spool, piston, piston guide bush constitute pressure self balancing structure together.Adopt the modulating valve of above-mentioned structure, under the High Pressure Difference operating mode, eliminated the unbalanced force that pressure medium produces, make the adjusting function of putting in order valve not receive the influence of pressure medium fluctuation basically, improved degree of regulation.
Description of drawings
Fig. 1 is the overall structure schematic representation of the utility model;
Fig. 2 is a spool lower end structure schematic representation in the utility model.
Among the figure: the 1-valve body; The 2-valve seat; The 3-spool; The 4-piston; The 5-valve gap; The 6-adjustment disk; The 7-spring; The 8-filler; The 9-piston actuator; The 10-spring seat; The 11-valve rod; The 12-piston guide bush; The 13-O RunddichtringO; 14-balance slotted hole.
Embodiment
Further specify the utility model below in conjunction with Figure of description.
As shown in the figure, a kind of piston type balance type self-contained pressure regulator comprises valve body 1, valve seat 2, spool 3, valve gap 5, adjustment disk 6, piston actuator 9 and valve rod 11.Valve seat 2 is arranged in the valve body 1, and valve gap 5 is arranged on the upper end of valve body 1.Spool 3 is fixed together with valve rod 11 and interts and is arranged in the valve gap 5, and is filled with filler 8 between the upper end of valve rod 11 and valve gap 5.5 outer connections of valve gap are provided with adjustment disk 6, and adjustment disk 6 is fastened on the spring seat 10 on the valve rod 3 through spring 7 elasticity that are provided with.The lower end of spool 3 and valve seat 2 are equipped with, and valve rod 11 upper ends are equipped with piston actuator 9.Piston actuator 9 is common actuator in the existing modulating valve.
In order to make whole valve adjusting function when regulating not receive the influence of pressure medium fluctuation, improve whole valve regulation precision, in spool 3 lower ends pressure self balancing structure is set.This structure has comprised through being threaded or being welded on the piston 4 of spool 3 lower ends; Piston 4 is slidingly matched with the piston guide bush 12 or valve gap 5 lower ends that are fixedly installed in the valve body 1; At middle part, spool 3 lower ends balance slotted hole 14 is set simultaneously, balance slotted hole 14 communicates with valve gap 5 inner chambers.In order to reach better sealing effect, between piston 4 and piston guide bush 12 or valve gap 5 lower ends, be provided with O RunddichtringO 13.
When medium by the flow through inlet passage of valve body 1 of the direction of arrow; Free area between spool 3 and the valve seat 2 has determined rate-of flow; Controlled downstream pressure P2 (from the valve outlet passage) is sent on the working masks of actuator 9, and converts detent force at this.According to spring 7 pretightening forces size, detent force adjustment spool 3 positions.Adjust the size of spring 7 pretightening forces through adjustment disk 6.As balancing component, downstream pressure P2 acts on piston 4 belows with piston 4, and the balance slotted hole 14 of upstream pressure P1 through spool 3 acts on piston 4 tops, like this with act on P1 and the mutual balance of P2 pressure on the spool 3.When downstream pressure during greater than adjusted set point, pressure spring 7 drives spool 3, and valve is closed according to pressure variety in proportion.Be lower than set point when downstream pressure drops to, then, valve opening degree scaled up according to the pressure amount, thereby reach decompression, voltage stabilizing purpose because the reaction force that spring 7 is produced drives spool 3.
Shown in the above and the figure only is the preferred implementation of the utility model.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model principle, can also make some modification and improvement, these also should be regarded as belonging to the protection domain of the utility model.
Claims (4)
1. piston type balance type self-contained pressure regulator; Comprise valve body (1), valve seat (2), spool (3), valve gap (5), adjustment disk (6), piston actuator (9) and valve rod (11); Described spool (3) and valve rod (11) are interspersed to be arranged in the valve gap (5); The outer connection of valve gap (5) is provided with adjustment disk (6); Adjustment disk (6) elasticity is fastened on the spring seat (10) on the valve rod (3), and the lower end of described spool (3) and valve seat (2) are equipped with, and described valve rod (11) upper end is equipped with piston actuator (9); It is characterized in that described spool (3) lower end socket is provided with piston (4); Piston (4) is slidingly matched with the piston guide bush (12) or valve gap (5) lower end that are fixedly installed in the valve body (1), and middle part, described spool (3) lower end is provided with balance slotted hole (14), and balance slotted hole (14) communicates with valve gap (5) inner chamber.
2. a kind of piston type balance type self-contained pressure regulator as claimed in claim 1 is characterized in that described piston (4) is spirally connected or welds the lower end that is arranged on spool (3).
3. a kind of piston type balance type self-contained pressure regulator as claimed in claim 1 is characterized in that being equipped with O RunddichtringO (13) between described piston (4) and the piston guide bush (12).
4. a kind of piston type balance type self-contained pressure regulator as claimed in claim 1 is characterized in that described piston (4) and valve gap (5) lower end are equipped with O RunddichtringO (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202700819U CN202182222U (en) | 2011-07-28 | 2011-07-28 | Piston type balanced self-reliance pressure-regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202700819U CN202182222U (en) | 2011-07-28 | 2011-07-28 | Piston type balanced self-reliance pressure-regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202182222U true CN202182222U (en) | 2012-04-04 |
Family
ID=46175259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202700819U Expired - Lifetime CN202182222U (en) | 2011-07-28 | 2011-07-28 | Piston type balanced self-reliance pressure-regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202182222U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108700215A (en) * | 2016-03-11 | 2018-10-23 | 株式会社鹭宫制作所 | Motor-driven valve |
| CN109027309A (en) * | 2018-10-15 | 2018-12-18 | 成都华科阀门制造有限公司 | A kind of motor three-way flow distributing valve |
| CN116085524A (en) * | 2023-02-10 | 2023-05-09 | 北京星河动力装备科技有限公司 | Pneumatic valve and carrier rocket |
-
2011
- 2011-07-28 CN CN2011202700819U patent/CN202182222U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108700215A (en) * | 2016-03-11 | 2018-10-23 | 株式会社鹭宫制作所 | Motor-driven valve |
| CN109027309A (en) * | 2018-10-15 | 2018-12-18 | 成都华科阀门制造有限公司 | A kind of motor three-way flow distributing valve |
| CN109027309B (en) * | 2018-10-15 | 2023-09-12 | 成都华科阀门制造有限公司 | Three-way flow distribution valve |
| CN116085524A (en) * | 2023-02-10 | 2023-05-09 | 北京星河动力装备科技有限公司 | Pneumatic valve and carrier rocket |
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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: 20120404 |
|
| CX01 | Expiry of patent term |