CN116221468A - Self-operated multistage rotary pressure reducing valve - Google Patents
Self-operated multistage rotary pressure reducing valve Download PDFInfo
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- CN116221468A CN116221468A CN202310219159.1A CN202310219159A CN116221468A CN 116221468 A CN116221468 A CN 116221468A CN 202310219159 A CN202310219159 A CN 202310219159A CN 116221468 A CN116221468 A CN 116221468A
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- valve
- rotary pressure
- pressure reducing
- self
- cover
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Classifications
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- 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
- F16K17/32—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting on a servo-mechanism or on a catch-releasing mechanism
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- 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
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- 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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a self-operated multistage rotary pressure reducing valve, which comprises a valve body, an upper valve cover, a lower valve cover, a valve seat and a gland, wherein the upper valve cover, the lower valve cover and the valve seat are arranged on the valve body; the valve is characterized in that a bellows type executing mechanism is arranged between the valve body and the upper valve cover; the two ends of the bellows type actuating mechanism are respectively provided with a pressure regulating mechanism and a multistage rotary pressure reducing valve core; the multistage rotary pressure reducing valve core is provided with a pressure balance hole; the valve seat and the multistage rotary pressure reducing valve core are processed by hard alloy materials. The invention adopts the bellows as the detection element by utilizing the bellows type execution mechanism, is suitable for occasions with severe working conditions such as high temperature, low temperature and corrosiveness and oil forbidden caused by the controlled medium on the rubber part, not only plays the role of the execution mechanism, but also plays the role of sealing, realizes the non-packing design of the whole valve, reduces the return difference and improves the regulation performance of the whole valve.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a self-operated multistage rotary pressure reducing valve.
Background
In recent years, the domestic valve industry rapidly develops, the product structure types of all valve manufacturers are endless, but when the domestic conventional self-operated pressure regulating valve is automatically controlled under the working conditions of large upstream pressure fluctuation range and large pressure difference, the valve core is greatly influenced by the pressure fluctuation before the valve, the sensitivity of the valve core is not high easily, and the pressure reducing and stabilizing effect is further reduced; the pressure difference between the inlet and the outlet of the valve is large, so that the pressure difference between the two ends of the valve core is also large, the flow velocity passing through the valve core is fast, and the noise is further increased; meanwhile, because the pressure difference at the two ends of the valve core is large, fluid is easy to generate blocking flow and cavitation occurs, so that the valve seat of the valve core is eroded and abraded, and the service life is reduced. For this purpose, a self-operated multistage rotary pressure reducing valve is proposed.
Disclosure of Invention
The invention aims to solve the problems and provides a self-operated multistage rotary pressure reducing valve.
In order to achieve the above purpose, the present invention provides the following technical solutions: a self-operated multistage rotary pressure reducing valve comprises a valve body, an upper valve cover, a lower valve cover and a valve seat which are arranged on the valve body, and a gland which is arranged on the valve body and used for fixing the upper valve cover; the valve is characterized in that a bellows type executing mechanism is arranged between the valve body and the upper valve cover; the two ends of the bellows type actuating mechanism are respectively provided with a pressure regulating mechanism and a multistage rotary pressure reducing valve core; the multistage rotary pressure reducing valve core is provided with a pressure balance hole; the valve seat and the multistage rotary pressure reducing valve core are processed by hard alloy materials.
Preferably, the valve seat comprises a first valve seat, a second valve seat, a third valve seat and a fourth valve seat which are sequentially arranged in the valve body; a sleeve is arranged between the fourth valve seat and the lower valve cover; and a push rod base is also arranged between the multistage rotary pressure reducing valve core and the bellows type actuator.
Preferably, a pre-tightening spring is arranged between the multistage rotary pressure reducing valve core and the sleeve; the sleeve is also provided with a guide through hole matched with the multistage rotary pressure reducing valve core.
Preferably, the multistage rotary pressure reducing valve core comprises a push rod and a plurality of pressure reducing bosses arranged on the push rod.
Preferably, the bellows type actuating mechanism comprises a lower base arranged in the valve body, an upper base arranged between the valve body and the upper valve cover and a bellows arranged between the upper base and the lower base; the lower base is also provided with a connecting push rod; the pressure regulating mechanism is connected with the connecting push rod.
Preferably, the pressure regulating mechanism comprises a spring base arranged on the connecting push rod, a spring gland arranged in the upper valve cover and a regulating spring arranged between the spring base and the spring gland.
Preferably, an adjusting rod is arranged on the upper valve cover; one end of the adjusting rod is fixedly connected with the spring gland, and the other end of the adjusting rod is provided with a thin nut.
Preferably, a top cover is also arranged on the upper valve cover; the top cover is arranged outside the adjusting rod.
Preferably, a choke plug is further installed on the side edge of the upper valve cover.
Preferably, the valve body is also provided with a medium inlet and a medium outlet.
The invention has the beneficial effects that: the bellows type actuating mechanism adopts the bellows as a detection element, is suitable for occasions with severe working conditions such as corrosion and oil forbidden caused by high-temperature and low-temperature controlled media on rubber parts, not only plays a role of the actuating mechanism, but also plays a role of sealing, realizes the non-packing design of the valve, reduces return difference and improves the adjustment performance of the valve;
the multistage rotary pressure reducing valve core is utilized to enable the medium flow direction to continuously rotate, the medium flow resistance is increased, the fluid flow speed is further controlled, cavitation damage is prevented, the multistage throttling is carried out, the pressure of the medium is gradually reduced, and therefore erosion and abrasion of the medium to the valve core and the valve seat are reduced;
the pressure balance holes on the multistage rotary pressure reducing valve core are utilized, so that a medium is conveniently led to the lower part of the multistage rotary pressure reducing valve core, self-balancing of the multistage rotary pressure reducing valve core is realized, the stress condition of the multistage rotary pressure reducing valve core is not influenced by pressure changes of an inlet and an outlet, the response speed of the valve is greatly increased, and the regulation precision of the valve is improved;
the valve seat and the multistage rotary pressure reducing valve core are processed by hard alloy materials, so that the anti-scouring effect is improved, and the service life is long.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an enlarged partial schematic view of the present invention at a in fig. 1.
Legend description: 1, a valve body; 101 medium inlet; 102 medium outlet; 2, a valve cover is arranged; 201 choke plug; 3, a lower valve cover; 4, valve seat; 401 a first valve seat; 402 a second valve seat; 403 a third valve seat; 404 a fourth valve seat; 405 a sleeve; 406 a guide through hole; 5, capping; 6, a bellows type executing mechanism; 601 a lower base; 602 an upper base; 603 bellows; 604 is connected with a push rod; 7, a pressure regulating mechanism; 701 spring base; 702 spring gland; 703 an adjusting spring; 704 adjusting the rod; 705 thin nut; 706 top cover; 8 a multi-stage rotary pressure reducing valve core; 801 pressure balancing holes; 802 pre-tensioning the spring; 803 push rod; 804 a pressure relief boss; 9 push rod base.
Detailed Description
The invention relates to a self-operated multistage rotary pressure reducing valve, which is further described below with reference to the accompanying drawings.
Referring to fig. 1-2, a self-operated multistage rotary pressure reducing valve in this embodiment includes a valve body 1, an upper valve cover 2, a lower valve cover 3 and a valve seat 4 mounted on the valve body 1, and a gland 5 mounted on the valve body 1 for fixing the upper valve cover 2; the valve is characterized in that a bellows type actuating mechanism 6 is arranged between the valve body 1 and the upper valve cover 2; the two ends of the bellows type actuating mechanism 6 are respectively provided with a pressure regulating mechanism 7 and a multistage rotary pressure reducing valve core 8; the multistage rotary pressure reducing valve core 8 is provided with a pressure balance hole 801; the valve seat 4 and the multistage rotary pressure reducing valve core 8 are processed by hard alloy materials; by using the bellows 603 as a detection element of the bellows type actuating mechanism 6, the valve is suitable for occasions with severe working conditions such as high temperature, low temperature and corrosiveness and oil forbidden caused by controlled media on rubber parts, not only plays a role of the actuating mechanism, but also plays a role of sealing, realizes the non-packing design of the valve, reduces return difference and improves the adjustment performance of the valve; the multistage rotary pressure reducing valve core 8 is utilized to continuously rotate the medium flow direction, so that the medium flow resistance is increased, the medium flow speed is further controlled, cavitation damage is prevented, the multistage throttling is realized, the pressure of the medium is gradually reduced, and the scouring abrasion of the medium to the multistage rotary pressure reducing valve core 8 and the valve seat 4 is reduced; by utilizing the pressure balance hole 801 on the multistage rotary pressure reducing valve core 8, the medium is conveniently led to the lower part of the multistage rotary pressure reducing valve core 8, the self-balancing of the multistage rotary pressure reducing valve core 8 is realized, the stress condition of the multistage rotary pressure reducing valve core 8 is not influenced by the pressure change of an inlet and an outlet, the response speed of the valve is greatly accelerated, and the regulation precision of the valve is improved; the valve seat 4 and the multistage rotary pressure reducing valve core 8 are made of hard alloy materials, so that the anti-scouring effect is improved, and the service life is long.
Referring to fig. 1-2, the valve seat 4 includes a first valve seat 401, a second valve seat 402, a third valve seat 403, and a fourth valve seat 404, which are sequentially installed in the valve body 1; a sleeve 405 is installed between the fourth valve seat 404 and the lower valve cover 3; a push rod base 9 is also arranged between the multistage rotary pressure reducing valve core 8 and the bellows type actuator 6; a pre-tightening spring 802 is arranged between the multi-stage rotary pressure reducing valve core 8 and the sleeve 405; the sleeve 405 is also provided with a guide through hole 406 which is matched with the multistage rotary pressure reducing valve core 8; the multistage rotary pressure reducing valve core 8 comprises a push rod 803 and a plurality of pressure reducing bosses 804 arranged on the push rod 803; the multistage rotary pressure reducing valve core 8 is formed by arranging the plurality of pressure reducing bosses 804 on the push rod 803, so that the medium flow direction is continuously rotated, the medium flow resistance is increased, the medium flow speed is further controlled, cavitation damage is prevented, the multistage throttling is realized, the pressure of the medium is gradually reduced, and the scouring abrasion of the medium to the multistage rotary pressure reducing valve core 8 and the valve seat 4 is reduced.
Referring to fig. 1-2, the bellows type actuator 6 includes a lower base 601 installed in the valve body 1, an upper base 602 installed between the valve body 1 and the upper bonnet 2, and a bellows 603 installed between the upper base 602 and the lower base 601; the lower base 601 is also provided with a connecting push rod 604; the pressure regulating mechanism 7 is connected with the connecting push rod 604; by using the corrugated pipe 603 arranged between the upper base 602 and the lower base 601, the sealing effect is achieved on the valve body 1, the non-packing design of the valve is realized, the return difference is reduced, and the regulation performance of the valve is improved.
Referring to fig. 1-2, the pressure regulating mechanism 7 includes a spring base 701 mounted on the connecting rod 604, a spring gland 702 mounted in the upper bonnet 2, and a regulating spring 703 mounted between the spring base 701 and the spring gland 702; an adjusting rod 704 is arranged on the upper valve cover 2; one end of the adjusting rod 704 is fixedly connected with the spring gland 702, and the other end of the adjusting rod is provided with a thin nut 705; a top cover 706 is also mounted on the upper valve cover 2; the top cover 706 is arranged outside the adjusting rod 704; a choke plug 201 is also arranged on the side edge of the upper valve cover 2; the valve body 1 is also provided with a medium inlet 101 and a medium outlet 102.
In the working process of the invention, a medium enters the valve body 1 from a medium inlet 101 on the valve body 1 and enters the bottom of the multistage rotary pressure reducing valve core 8, then sequentially passes through each stage for reducing pressure, and is totally 4 stages, and then flows out from a medium outlet 102 of the valve body 1; meanwhile, the outlet pressure after the pressure reduction of the multistage rotary pressure reducing valve core 8 enters the lower part of the bellows type actuating mechanism 6 to generate upward force, and the upward force is balanced with the force generated by the regulating spring 703, and the outlet pressure of the valve is set at the moment; when the valve back pressure is lower than the set pressure, the force acting under the bellows type actuating mechanism 6 is reduced, the connecting push rod 604 is pushed to move downwards under the action of the regulating spring 703, the connecting push rod 604 pushes the lower base 601 to move downwards, the lower base 601 pushes the push rod base 9 to move downwards, the push rod base 9 pushes the multi-stage rotary pressure reducing valve core 8 to move downwards proportionally, the pre-tightening spring 802 is compressed, namely the opening of the multi-stage rotary pressure reducing valve core 8 is increased proportionally, the flow after flowing to the valve is increased, and the valve back pressure is increased, so that the valve back pressure is stabilized near the set pressure; when the valve rear is higher than the set pressure, the force acting under the bellows type actuating mechanism 6 is increased to push the lower base 601 to move upwards, the lower base 601 drives the push rod base 9 and the connecting push rod 604 to move upwards, the adjusting spring 703 is compressed, the push rod base 9 drives the multi-stage rotary pressure reducing valve core 8 to move upwards in proportion, the pre-tightening spring 802 is restored to the original state, namely the opening degree of the multi-stage rotary pressure reducing valve core 8 is reduced in proportion, so that the flow after flowing to the valve is reduced, the valve rear pressure is reduced, and the valve rear pressure is stabilized near the set pressure.
The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.
Claims (10)
1. A self-operated multistage rotary pressure reducing valve comprises a valve body (1), an upper valve cover (2), a lower valve cover (3) and a valve seat (4) which are arranged on the valve body (1), and a gland (5) which is arranged on the valve body (1) and used for fixing the upper valve cover (2); the valve is characterized in that a bellows type actuating mechanism (6) is arranged between the valve body (1) and the upper valve cover (2); the two ends of the bellows type actuating mechanism (6) are respectively provided with a pressure regulating mechanism (7) and a multistage rotary pressure reducing valve core (8); the multistage rotary pressure reducing valve core (8) is provided with a pressure balance hole (801); the valve seat (4) and the multistage rotary pressure reducing valve core (8) are formed by processing hard alloy materials.
2. A self-contained multi-stage rotary pressure relief valve as claimed in claim 1 wherein: the valve seat (4) comprises a first valve seat (401), a second valve seat (402), a third valve seat (403) and a fourth valve seat (404) which are sequentially arranged in the valve body (1); a sleeve (405) is arranged between the fourth valve seat (404) and the lower valve cover (3); a push rod base (9) is also arranged between the multistage rotary pressure reducing valve core (8) and the bellows type actuator (6).
3. A self-contained multi-stage rotary pressure relief valve as claimed in claim 2 wherein: a pre-tightening spring (802) is arranged between the multistage rotary pressure reducing valve core (8) and the sleeve (405); the sleeve (405) is also provided with a guide through hole (406) which is matched with the multistage rotary pressure reducing valve core (8).
4. A self-contained multi-stage rotary pressure relief valve as claimed in claim 3 wherein: the multistage rotary pressure reducing valve core (8) comprises a push rod (803) and a plurality of pressure reducing bosses (804) arranged on the push rod (803).
5. A self-contained multi-stage rotary pressure relief valve as claimed in claim 1 wherein: the bellows type actuating mechanism (6) comprises a lower base (601) arranged in the valve body (1), an upper base (602) arranged between the valve body (1) and the upper valve cover (2) and a bellows (603) arranged between the upper base (602) and the lower base (601); the lower base (601) is also provided with a connecting push rod (604); the pressure regulating mechanism (7) is connected with the connecting push rod (604).
6. A self-contained multi-stage rotary pressure relief valve as claimed in claim 5 wherein: the pressure regulating mechanism (7) comprises a spring base (701) arranged on the connecting push rod (604), a spring gland (702) arranged in the upper valve cover (2) and a regulating spring (703) arranged between the spring base (701) and the spring gland (702).
7. A self-contained multi-stage rotary pressure relief valve as claimed in claim 6 wherein: an adjusting rod (704) is arranged on the upper valve cover (2); one end of the adjusting rod (704) is fixedly connected with the spring gland (702), and the other end of the adjusting rod is provided with a thin nut (705).
8. A self-contained multi-stage rotary pressure relief valve as claimed in claim 7 wherein: a top cover (706) is also arranged on the upper valve cover (2); the top cover (706) is arranged outside the adjusting rod (704).
9. A self-contained multi-stage rotary pressure relief valve as claimed in claim 7 wherein: a choke plug (201) is also arranged on the side edge of the upper valve cover (2).
10. A self-contained multi-stage rotary pressure relief valve as claimed in claim 1 wherein: the valve body (1) is also provided with a medium inlet (101) and a medium outlet (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310219159.1A CN116221468A (en) | 2023-03-09 | 2023-03-09 | Self-operated multistage rotary pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310219159.1A CN116221468A (en) | 2023-03-09 | 2023-03-09 | Self-operated multistage rotary pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116221468A true CN116221468A (en) | 2023-06-06 |
Family
ID=86587098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310219159.1A Pending CN116221468A (en) | 2023-03-09 | 2023-03-09 | Self-operated multistage rotary pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116221468A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001027344A (en) * | 1999-07-12 | 2001-01-30 | Yoshitake Inc | Pressure regulating valve |
| CN201764032U (en) * | 2010-07-16 | 2011-03-16 | 宣达实业集团有限公司 | Automatic recirculating check valve |
| CN201902618U (en) * | 2010-11-01 | 2011-07-20 | 浙江科海仪表有限公司 | Novel self-operated pressure adjusting valve |
| CN202118331U (en) * | 2011-05-24 | 2012-01-18 | 浙江蒙德克流体控制有限公司 | Self-operated pressure regulating valve capable of utilizing inner pressure |
| CN104455469A (en) * | 2014-09-29 | 2015-03-25 | 北京航天动力研究所 | Throttling serial type multistage pressure reduction and adjustment valve |
| CN206329777U (en) * | 2016-12-23 | 2017-07-14 | 吴忠中创自控阀有限公司 | Pilot-operated type tandem Multi-level throttle valve |
-
2023
- 2023-03-09 CN CN202310219159.1A patent/CN116221468A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001027344A (en) * | 1999-07-12 | 2001-01-30 | Yoshitake Inc | Pressure regulating valve |
| CN201764032U (en) * | 2010-07-16 | 2011-03-16 | 宣达实业集团有限公司 | Automatic recirculating check valve |
| CN201902618U (en) * | 2010-11-01 | 2011-07-20 | 浙江科海仪表有限公司 | Novel self-operated pressure adjusting valve |
| CN202118331U (en) * | 2011-05-24 | 2012-01-18 | 浙江蒙德克流体控制有限公司 | Self-operated pressure regulating valve capable of utilizing inner pressure |
| CN104455469A (en) * | 2014-09-29 | 2015-03-25 | 北京航天动力研究所 | Throttling serial type multistage pressure reduction and adjustment valve |
| CN206329777U (en) * | 2016-12-23 | 2017-07-14 | 吴忠中创自控阀有限公司 | Pilot-operated type tandem Multi-level throttle valve |
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