CN105042141A - Piston self-operated regulating valve - Google Patents
Piston self-operated regulating valve Download PDFInfo
- Publication number
- CN105042141A CN105042141A CN201510499539.0A CN201510499539A CN105042141A CN 105042141 A CN105042141 A CN 105042141A CN 201510499539 A CN201510499539 A CN 201510499539A CN 105042141 A CN105042141 A CN 105042141A
- Authority
- CN
- China
- Prior art keywords
- piston
- valve
- cavity
- valve body
- pressing plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1223—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being acted upon by the circulating fluid
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention belongs to the technical field of regulating valves, and relates to a piston self-operated regulating valve. The piston self-operated regulating valve sequentially comprises three parts including a feedback mechanism, an actuating mechanism and a valve body from top to bottom. A valve element is arranged on a valve port of the valve body in a matched manner. The valve element is driven by a valve rod to open and close the valve port. The actuating mechanism comprises an upper cover and a lower cover. The upper cover and the lower cover are oppositely combined to form an installation cavity. The installation cavity is internally provided with a pressing plate and an actuating rod connected with the pressing plate. The actuating rod is fixedly connected with the valve rod through a sleeve. Return springs are arranged between the pressing plate and the lower cover. The feedback mechanism comprises a control pipeline and a piston cavity. The piston cavity is divided into an upper cavity body and a lower cavity body through a piston. The lower end of the control pipeline is communicated with a water inlet cavity in the valve body, and the upper end of the control pipeline is connected with the upper cavity body. The bottom of the piston is fixedly provided with a connecting piece in an interference manner. The connecting piece is fixedly connected with the actuating rod. Compared with a traditional membrane deformed within the short stroke, through the cooperation between the piston and the piston cavity, the piston stroke is determined by the length of the piston cavity, the stroke is longer, larger pressure can be borne, and the flow can be automatically adjusted when the pressure of a medium inside the valve body is higher.
Description
Technical field
The invention belongs to modulating valve technical field.
Background technique
Self-operated valve relies on the pressure itself flowing through interior medium as driven by energy valve automatic operation, does not need ABAP Adapter and secondary meter.Direct-operated regulator all utilizes the feedback signal of valve output terminal (pressure, pressure reduction, temperature) to be delivered to actuator by signal tube and drives flap to change the aperture of valve, reach the object regulating pressure, flow, temperature.
Valve body is comprised from existing direct-operated regulator structure, spool, adjustable lever, actuator, feedback mechanism, control pipeline, wherein have valve road in valve body, spool is arranged in the valve port in valve road, make valve port open during the moving up and down of spool or close, the movement of spool is controlled by adjustable lever, adjustable lever is connected with actuator, control water-inlet cavity and the feedback mechanism in pipeline connecting valve road, the output terminal of feedback mechanism is connected with execution architecture, its principle is arrogant enters control valve line with the water in water-inlet cavity after throttling, when the hydraulic pressure of water-inlet cavity is larger, control hydraulic pressure in pipeline by signal feed back to feedback mechanism, the execution architecture be attached thereto is made to drive adjustable lever to move down, valve port turns down by spool, otherwise, when the hydraulic pressure of water-inlet cavity is less, valve port turns down by spool.The shortcoming of such scheme is: shell inner cavity is divided into upper chamber and lower chambers by the diaphragm that existing feedback mechanism comprises in shell, shell, bottom chamber is sliding combined with the shifting board be connected with execution architecture, return spring is provided with between diaphragm and shifting board, upper chamber communicates with control pipeline, the variation in water pressure of upper chamber makes diaphragm deformation, overcome the elastic force of spring and promote shifting board slip, but in actual application, the deformation quantity of diaphragm is limited, the hydraulic pressure of upper chamber is excessive, can diaphragm be destroyed, cause the Flow-rate adjustment of direct-operated regulator to lose efficacy.
Summary of the invention
The invention is intended to provide a kind of when pressure medium is higher in valve body, the piston direct-operated regulator of flow automatic regulation.
Piston direct-operated regulator in this programme, be divided into feedback mechanism, actuator, valve body three part from top to bottom successively, the valve port of valve body is combined with spool, spool is driven by valve rod thus closure or openness valve port, described actuator comprises upper cover, lower cover, and upper cover and lower cover are combined to form installation cavity, the execution bar having pressing plate in installation cavity and be connected with pressing plate, this execution bar is fixedly connected with by sleeve with valve rod, is furnished with return spring between pressing plate and lower cover; Described feedback mechanism comprises control pipeline and piston cavity, piston cavity is divided into upper chamber, lower chambers by piston, and control the lower end of pipeline and be communicated with the water-inlet cavity in valve body, its upper end is connected with upper chamber, piston base interference is fixed with link, and this link is fixedly connected with execution bar.
Beneficial effect: the present invention adopts piston to substitute original diaphragm, control when hydraulic pressure is too high in pipeline, to enter promotion piston in upper chamber to move down, pressure is passed to successively link, performs bar, valve rod, thus the distance between spool and valve seat reduces, valve port flow diminishes, compare the diaphragm deformation that traditional stroke is shorter, the present invention adopts the cooperation of piston and piston cavity, piston stroke is determined by piston cavity length, stroke is longer, larger pressure can be born, when in valve body, pressure medium is higher, flow automatic regulation.
Further, this sleeve described comprises screw thread inner chamber, performs bar lower end and from top to bottom to screw in screw thread inner chamber and to pass through nut check, valve rod upper end to screw in from the bottom to top in screw thread inner chamber and passes through nut check, connect more firm, and execution bar and valve rod not easily misplace, power transmission efficiency is higher.
Further, the number of described return spring is two groups, and symmetrical to perform line centered by bar, and restoring force is larger, and speed of replying is fast.
Further, described spool is taper valve core, and with O-ring seals on this poppet valve core side face, sealing effect is better.
Further, the position of described valve rod and valve body contact is equipped with gland packing box, and prevent medium to be brought in valve body along with the movement of valve rod, sealing effect is better.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention piston direct-operated regulator.
Embodiment
Below by embodiment, the present invention is further detailed explanation:
Reference character in Figure of description comprises: piston cavity 1, piston 2, link 3, control pipeline 4, upper cover 5, lower cover 6, pressing plate 7, return spring 8, execution bar 9, sleeve 10, valve rod 11, gland packing box 12, valve body 13, spool 14, valve seat 15, water-inlet cavity 16, water chamber 17.
Embodiment's piston direct-operated regulator is substantially as shown in Figure 1:
Piston direct-operated regulator, is divided into feedback mechanism, actuator, valve body 13 three parts from top to bottom successively.
Have water-inlet cavity 16, water chamber 17 in valve body 13, water-inlet cavity 16 is communicated with by valve port with water chamber 17, and current flow to water chamber 17 from water-purifying cavity.Valve port place is equipped with valve seat, this valve seat has the valve opening of taper.Valve rod 11 is vertically applied in valve body 13, and the lower end of valve rod 11 is the shape spool 14 of the taper of mating with valve opening, and with O-ring seals on spool 14 side face, the position that valve rod 11 contacts with valve body 13 is equipped with gland packing box 12.
Actuator comprises upper cover 5, lower cover 6, and upper cover 5 and lower cover 6 are bolted formation installation cavity, comprise pressing plate 7 in this installation cavity, and pressing plate 7 neutral position has been bolted to connection and has performed bar 9.Perform bar 9 to run through at the bottom of installation cavity chamber and be fixedly connected with by sleeve 10 with the upper end of valve rod 11, concrete Placement is: this sleeve 10 comprises screw thread inner chamber, perform bar 9 lower end from top to bottom to screw in screw thread inner chamber and by nut check, valve rod 11 upper end to screw in from the bottom to top in screw thread inner chamber and passes through nut check.Be furnished with the return spring 8 of two groups between pressing plate 7 and lower cover 6, these two groups of return springs 8 line centered by performing bar 9 is symmetrical.
Feedback mechanism comprises control pipeline 4 and piston cavity 1, be furnished with in piston cavity 1 and have piston 2, the side face of piston 2 is provided with O-ring seals, piston cavity 1 is divided into upper chamber, lower chambers by piston 2, the bottom interference fit of piston 2 has link 3, upper cover 5, the pressing plate 7 of actuator are run through in this link 3 lower end, and the tapped hole prefabricated with performing bar 9 upper end is connected.Control pipeline 4 lower end to be connected with water-inlet cavity 16, control pipeline 4 upper end and be communicated with upper chamber.
Above-described is only embodiments of the invention, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from structure of the present invention, some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.The protection domain that this application claims should be as the criterion with the content of its claim, and the embodiment in specification etc. record the content that may be used for explaining claim.
Claims (5)
1. piston direct-operated regulator, be divided into feedback mechanism, actuator, valve body three part from top to bottom successively, the valve port of valve body is combined with spool, spool is driven by valve rod thus closure or openness valve port, it is characterized in that, described actuator comprises upper cover, lower cover, upper cover and lower cover are combined to form installation cavity, the execution bar having pressing plate in installation cavity and be connected with pressing plate, this execution bar is fixedly connected with by sleeve with valve rod, is furnished with return spring between pressing plate and lower cover; Described feedback mechanism comprises control pipeline and piston cavity, piston cavity is divided into upper chamber, lower chambers by piston, and control the lower end of pipeline and be communicated with the water-inlet cavity in valve body, its upper end is connected with upper chamber, piston base interference is fixed with link, and this link is fixedly connected with execution bar.
2. piston direct-operated regulator according to claim 1, it is characterized in that: this sleeve described comprises screw thread inner chamber, perform bar lower end from top to bottom to screw in screw thread inner chamber and by nut check, valve rod upper end to screw in from the bottom to top in screw thread inner chamber and passes through nut check.
3. piston direct-operated regulator according to claim 2, is characterized in that: the number of described return spring is two groups, and line is symmetrical centered by performing bar.
4. piston direct-operated regulator according to claim 3, is characterized in that: described spool is taper valve core, with O-ring seals on this poppet valve core side face.
5. piston direct-operated regulator according to claim 4, is characterized in that: the position of described valve rod and valve body contact is equipped with gland packing box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510499539.0A CN105042141A (en) | 2015-08-15 | 2015-08-15 | Piston self-operated regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510499539.0A CN105042141A (en) | 2015-08-15 | 2015-08-15 | Piston self-operated regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105042141A true CN105042141A (en) | 2015-11-11 |
Family
ID=54448946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510499539.0A Pending CN105042141A (en) | 2015-08-15 | 2015-08-15 | Piston self-operated regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105042141A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956001A (en) * | 2018-09-03 | 2018-12-07 | 中国石油天然气股份有限公司 | Pressure acquisition system |
| CN109854791A (en) * | 2019-03-16 | 2019-06-07 | 杭州道盈信息科技有限公司 | It is a kind of to be equipped with the self-contained pressure regulator and its working method for improving seat fixing structure |
| CN110345285A (en) * | 2019-08-01 | 2019-10-18 | 浙江汇正自控阀门有限公司 | A kind of pilot-operated type pressure-regulating valve |
| CN110388492A (en) * | 2019-08-09 | 2019-10-29 | 成都百分之三科技有限公司 | From the safety auto-controlled valve of fluid and from the safety auto-controlled valve protection system of fluid |
| CN112032335A (en) * | 2020-08-29 | 2020-12-04 | 陈翠华 | Gas-liquid flow type speed control device |
| EP4282671A1 (en) * | 2022-05-25 | 2023-11-29 | Volvo Truck Corporation | Valve assembly, fluid management system and a vehicle |
-
2015
- 2015-08-15 CN CN201510499539.0A patent/CN105042141A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956001A (en) * | 2018-09-03 | 2018-12-07 | 中国石油天然气股份有限公司 | Pressure acquisition system |
| CN108956001B (en) * | 2018-09-03 | 2024-04-30 | 中国石油天然气股份有限公司 | Pressure acquisition system |
| CN109854791A (en) * | 2019-03-16 | 2019-06-07 | 杭州道盈信息科技有限公司 | It is a kind of to be equipped with the self-contained pressure regulator and its working method for improving seat fixing structure |
| CN110345285A (en) * | 2019-08-01 | 2019-10-18 | 浙江汇正自控阀门有限公司 | A kind of pilot-operated type pressure-regulating valve |
| CN110388492A (en) * | 2019-08-09 | 2019-10-29 | 成都百分之三科技有限公司 | From the safety auto-controlled valve of fluid and from the safety auto-controlled valve protection system of fluid |
| CN112032335A (en) * | 2020-08-29 | 2020-12-04 | 陈翠华 | Gas-liquid flow type speed control device |
| EP4282671A1 (en) * | 2022-05-25 | 2023-11-29 | Volvo Truck Corporation | Valve assembly, fluid management system and a vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105042141A (en) | Piston self-operated regulating valve | |
| CN105042093B (en) | The valve of adjustable opening and closing frequency | |
| CN105042167A (en) | Lever type self-actuated regulator | |
| CN108105435A (en) | Pilot operated safety valve | |
| CN204942673U (en) | Time delay direct-operated regulator | |
| CN203500632U (en) | Hydraulic remote control ball float valve | |
| CN204942674U (en) | Piston direct-operated regulator | |
| CN208845827U (en) | Pressure self-tipping type high-pressure ball valve | |
| CN203927018U (en) | A kind of electric remote control float valve | |
| CN105042140A (en) | Time-delay self-actuated regulator | |
| CN204942718U (en) | Lever type is from force regulating valve | |
| CN204187038U (en) | Multi-functional pilot-operated diaphragm valve | |
| CN204553956U (en) | Diaphragm type safety valve | |
| CN111306333B (en) | Safety valve | |
| CN211737617U (en) | Direct-acting pressure positive feedback two-way proportional pressure reducing valve | |
| CN103267162B (en) | Ultra-supercritical rapidly-closed butterfly valve hydraulic control device | |
| CN204283510U (en) | A kind of steam turbine electro-control converter | |
| CN203098883U (en) | Diaphragm pilot valve with contact type valve element linear displacement detection device | |
| CN202926741U (en) | High-flow hydraulic feedback plug-in mounting electric proportional throttle valve | |
| CN101749788B (en) | Variable flow pressure control device | |
| CN204942553U (en) | The valve of adjustable opening and closing frequency | |
| CN202176808U (en) | Zero-pressure opening remote control float valve | |
| CN206221725U (en) | A kind of pressure regulator valve | |
| CN104763830A (en) | Piston type hydraulic control valve | |
| CN205559907U (en) | Automatic controller that reduces pressure of unsteady flow volume |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151111 |