CN114183538A - Multi-section pressure reduction single-seat regulating valve adopting throttling guide sleeve - Google Patents
Multi-section pressure reduction single-seat regulating valve adopting throttling guide sleeve Download PDFInfo
- Publication number
- CN114183538A CN114183538A CN202111515670.3A CN202111515670A CN114183538A CN 114183538 A CN114183538 A CN 114183538A CN 202111515670 A CN202111515670 A CN 202111515670A CN 114183538 A CN114183538 A CN 114183538A
- Authority
- CN
- China
- Prior art keywords
- throttling
- guide sleeve
- valve
- pressure
- seat
- 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.)
- Granted
Links
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 66
- 230000009467 reduction Effects 0.000 title claims abstract description 25
- 210000004907 gland Anatomy 0.000 claims abstract description 41
- 230000006837 decompression Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 abstract description 2
- 230000003116 impacting effect Effects 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
-
- 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
- F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The invention relates to a multi-section pressure reduction single-seat regulating valve adopting a throttling guide sleeve, which comprises a valve body, wherein a guide sleeve gland and a valve seat which are mutually sealed are sequentially arranged in the valve body from top to bottom; the lower part of the valve body is provided with a medium inflow channel and a medium outflow channel, the medium inflow channel is communicated with the valve seat, and the medium outflow channel is communicated with the upper part of the guide sleeve gland; and a throttling guide sleeve is arranged in the valve seat and the guide sleeve gland and is communicated with the first pressure-adjustable channel and the second pressure-adjustable channel. The invention has simple structure and small occupied space; the effect of reducing the fluid velocity of flow after every grade step decompression prevents that the velocity of flow from impacting the case at the excessive speed and causing unfavorable condition such as vibrations, also has supplementary step-down function.
Description
Technical Field
The invention belongs to the technical field of valves, and relates to a multi-section pressure-reducing single-seat regulating valve adopting a throttling guide sleeve.
Background
At present, ordinary desuperheating water return circuit governing valve adopts single seat structure valve internals mostly, because the decompression effect is not obvious, cause the washing away of valve internals easily, the impaired back of valve internals regulating part adjusts the precision and reduces, single seat valve structure disk seat is threaded connection generally and fixes on the valve body, under the high pressure operating mode, cause the screw thread not hard up easily, these all can lead to its accommodation performance, sealed effect and life-span all can reduce by a wide margin, and be difficult for changing the accessory, can lead to the valve body screw thread to damage together after the disk seat screw thread damages, it needs the supporting change of valve body and disk seat to change, it is uneconomic. In the process of temperature reduction, if the temperature reduction water quantity is not controlled well, superheated steam is easy to generate wet saturated steam to increase the water quantity in the pipeline, the temperature regulation is influenced, even a water hammer site appears in the pipeline, and the safety of the pipeline on the site is influenced, which are common problems of temperature reduction water loop regulating valves.
Labyrinth sleeve step-down governing valve has good step-down effect, and the shortcoming blocks up the labyrinth runner easily, can only use in clean medium, and the pressure relief device operating mode that subtracts temperature is complicated, has slight impurity to block up in the sleeve labyrinth through the accumulation in the temperature-reducing water medium, causes the regulation flow not enough, can't lower the temperature to the superheated steam in the pipeline in real time, causes the incident. Therefore, the temperature reduction water loop regulating valve in the temperature reduction and pressure reduction device does not generally adopt a labyrinth type sleeve pressure reduction regulating valve.
Disclosure of Invention
The invention aims to provide a multi-section pressure-reducing single-seat regulating valve adopting a throttling guide sleeve, which can solve the problems.
According to the technical scheme provided by the invention: a multi-section pressure reduction single-seat regulating valve adopting a throttling guide sleeve comprises a valve body, wherein a guide sleeve gland and a valve seat which are mutually sealed are sequentially arranged in the valve body from top to bottom, a throttling valve core is arranged in the guide sleeve gland and the valve seat in a sliding manner, a first pressure-adjustable channel is arranged between the valve seat and the throttling valve core, and a second pressure-adjustable channel and a third pressure-adjustable channel are arranged between the middle part of the guide sleeve gland and the throttling valve core; the lower part of the valve body is provided with a medium inflow channel and a medium outflow channel, the medium inflow channel is communicated with the valve seat, and the medium outflow channel is communicated with the upper part of the guide sleeve gland; and a throttling guide sleeve is arranged in the valve seat and the guide sleeve gland and is communicated with the first pressure-adjustable channel and the second pressure-adjustable channel.
As a further improvement of the invention, a guide sleeve gland cavity and a valve seat cavity are sequentially arranged in the valve body from top to bottom, and a medium inflow channel is communicated below the valve seat cavity.
As a further improvement of the invention, a first valve core sliding cavity is arranged in the valve seat, a first pressure regulating hole is communicated with the lower part of the first valve core sliding cavity, and the first pressure regulating hole is communicated with the medium inflow channel.
As a further improvement of the invention, the upper part of the valve seat is provided with a valve seat positioning boss, and the bottom of the guide sleeve pressure cover is provided with a pressure cover lower positioning boss.
As a further improvement of the invention, the first pressure regulating hole adopts a fillet structure.
As a further improvement of the invention, a second valve core sliding cavity is formed in the guide sleeve gland, the lower part of the second valve core sliding cavity is communicated with the first valve core sliding cavity, a second pressure regulating hole and a third pressure regulating hole are sequentially arranged in the second valve core sliding cavity from bottom to top, the side surface of the second valve core sliding cavity is communicated with a medium outflow channel of the guide sleeve gland, and the medium outflow channel of the guide sleeve gland is communicated with a medium outflow channel.
As a further improvement of the invention, the throttle valve core is sequentially provided with a first throttle shaft section, a second throttle shaft section and a third throttle shaft section from bottom to top, the first throttle shaft section, the second throttle shaft section and the third throttle shaft section are respectively positioned in a first pressure regulating hole, a second pressure regulating hole and a third pressure regulating hole, and gaps among the first throttle shaft section, the second throttle shaft section and the third throttle shaft section, the first pressure regulating hole, the second pressure regulating hole and the third pressure regulating hole respectively form a first pressure regulating channel, a second pressure regulating channel and a third pressure regulating channel.
As a further improvement of the invention, the first throttling shaft section, the second throttling shaft section and the third throttling shaft section are of structures which are gradually contracted from top to bottom.
As a further improvement of the invention, the lower ends of the second throttling shaft section and the third throttling shaft section are provided with a speed reduction groove.
As a further improvement of the invention, a valve core positioning hole is formed in the throttling guide sleeve, and a plurality of pressure reducing grooves are vertically and uniformly distributed on the inner periphery of the valve core positioning hole; the throttle valve core is provided with a positioning flange which is positioned between the first throttle shaft section and the second throttle shaft section.
The positive progress effect of this application lies in:
1. the invention has simple structure, convenient processing and high interchangeability, the decompression effect is randomly controlled according to the width of the decompression groove, the cost is low, and the replacement is facilitated.
2. The invention adopts a throttling cascade valve core and has the function of pressure reduction regulation. 2, 3, 4 or more sections can be designed according to the pressure difference, the flow capacity of the first section of throttle valve core is 1/4 integrated with the flow capacity of the following sections, the sealing performance and the adjusting performance of the first section of throttle valve core are not affected on the following sections of throttle valve cores when the pressure difference is large, and the flow capacities of the following sections of throttle valve cores are required to be designed to be the same; therefore, the total pressure drop borne by the throttle valve cores at the rear sections is 16 times that borne by the throttle valve core at the first section, and the stability and the reliability of the throttle valve core at the first section are ensured.
3. The throttling guide sleeve is fixedly arranged between the valve seat and the throttling guide sleeve pressing cover, can be freely disassembled and replaced, stabilizes the valve core, prevents the valve core from vibrating, and is the premise of stable adjustment.
4. The invention realizes multi-stage pressure reduction by replacing a labyrinth sleeve regulating valve with the pressure reduction groove and the throttling cascade valve core of the throttling guide sleeve, and improves the unfavorable conditions of flow passage blockage, inconvenient maintenance and the like
5. The inner hole of the throttling guide sleeve pressure cover is provided with an annular groove, the flow velocity of fluid is reduced after each stage of pressure reduction, the unfavorable conditions of vibration and the like caused by too high flow velocity impact on the valve core are prevented, and the throttling guide sleeve pressure cover also has an auxiliary pressure reduction function, and accounts for 10% -15% of the total pressure reduction.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic representation of the flow of the media of the present invention.
FIG. 3 is a schematic view of a throttle valve cartridge of the present invention.
Fig. 4 is a schematic structural view of the throttling guide sleeve of the invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover such processes, methods, systems, articles, or apparatus that comprise a list of steps or elements, are not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such processes, methods, articles, or apparatus.
In the figures 1-4, the valve comprises a valve body 1, a medium inflow channel 1-1, a medium outflow channel 1-2, a valve cover 2, a valve seat 5, a throttling guide sleeve 6, a throttling valve core 7, a guide sleeve gland 8 and the like.
As shown in fig. 1, the invention is a multi-section pressure-reducing single-seat regulating valve adopting a throttling guide sleeve, which comprises a valve body 1, wherein a guide sleeve gland 8 and a valve seat 5 which are mutually sealed are sequentially arranged in the valve body 1 from top to bottom, a throttling valve core 7 is arranged in the guide sleeve gland 8 and the valve seat 5 in a sliding manner, a first pressure-adjustable channel is arranged between the valve seat 5 and the throttling valve core 7, and a second pressure-adjustable channel and a third pressure-adjustable channel are arranged between the middle part of the guide sleeve gland 8 and the throttling valve core 7; the lower part of the valve body 1 is provided with a medium inflow channel 1-1 and a medium outflow channel 1-2, the medium inflow channel 1-1 is communicated with a valve seat 5, and the medium outflow channel 1-2 is communicated with the upper part of a guide sleeve gland 8; the valve seat 5 and the guide sleeve gland 8 are internally provided with a throttling guide sleeve 6, the throttling guide sleeve 6 is sleeved on the periphery of the lower part of the throttling valve core 7, and the throttling guide sleeve 6 is communicated with the first pressure-adjustable channel and the second pressure-adjustable channel.
A guide sleeve gland cavity and a valve seat cavity are sequentially formed in the valve body 1 from top to bottom and are respectively used for mounting a guide sleeve gland 8 and a valve seat 5; the lower part of the valve seat cavity is communicated with a medium inflow channel 1-1.
A first valve core sliding cavity 5-1 is formed in the valve seat 5, a first pressure regulating hole 5-2 is communicated below the first valve core sliding cavity 5-1, and a valve seat positioning boss is arranged at the upper part of the valve seat 5. The first pressure regulating hole 5-2 communicates with the medium inflow passage 1-1. The first pressure regulating hole 5-2 adopts a fillet design, so that stress concentration is avoided. The first pressure regulating hole 5-2 is a medium opening and closing hole at the same time and is of a taper hole structure with a large upper part and a small lower part, when the throttling valve core 7 descends to a certain position, the first pressure regulating hole 5-2 is in contact with the periphery of the throttling valve core 7, the area of the first pressure regulating channel is 0, and the regulating valve is closed.
The guide sleeve gland 8 is provided with a second valve core sliding cavity 8-1, the lower part of the second valve core sliding cavity 8-1 is communicated with a first valve core sliding cavity 5-1, a second pressure regulating hole 8-2 and a third pressure regulating hole 8-3 are sequentially arranged in the second valve core sliding cavity 8-1 from bottom to top, the side surface of the second valve core sliding cavity 8-1 is communicated with a guide sleeve gland medium outflow channel 8-4, and the guide sleeve gland medium outflow channel 8-4 is communicated with a medium outflow channel 1-2. The bottom of the guide sleeve gland 8 is provided with a gland lower positioning boss.
The valve seat positioning boss is matched with the gland lower positioning boss and used for positioning the valve seat 5 and the guide sleeve gland 8.
As shown in FIG. 3, the throttle valve core 7 is sequentially provided with a first throttle shaft section 7-1, a second throttle shaft section 7-2 and a third throttle shaft section 7-3 from bottom to top, the first throttle shaft section 7-1, the second throttle shaft section 7-2 and the third throttle shaft section 7-3 are respectively positioned in a first pressure regulating hole 5-2, a second pressure regulating hole 8-2 and a third pressure regulating hole 8-3, and gaps among the first throttle shaft section 7-1, the second throttle shaft section 7-2, the third throttle shaft section 7-3, the first pressure regulating hole 5-2, the second pressure regulating hole 8-2 and the third pressure regulating hole 8-3 respectively form a first pressure regulating channel, a second pressure regulating channel and a third pressure regulating channel.
The first throttling shaft section 7-1, the second throttling shaft section 7-2 and the third throttling shaft section 7-3 are of structures gradually shrinking from top to bottom, and the lower ends of the second throttling shaft section 7-2 and the third throttling shaft section 7-3 are provided with speed reduction grooves 7-4, so that the instantaneous flow rate is reduced, the impact on the valve core is reduced, and the oscillation condition is prevented.
As shown in figure 4, a valve core positioning hole 6-1 is formed in the throttling guide sleeve 6, and a plurality of pressure reducing grooves 6-2 are vertically and uniformly distributed on the inner periphery of the valve core positioning hole 6-1. The throttle valve core 7 is provided with a positioning flange 7-5 which is positioned between the first throttle shaft section 7-1 and the second throttle shaft section 7-2. The positioning flange 7-5 is matched with the valve core positioning hole 6-1 to guide the medium into the decompression groove 6-2.
The upper part of the valve body 1 is provided with a valve cover 2, and the lower part of the valve cover 2 is propped against a guide sleeve gland 8. The opposite surfaces of the valve cover 2 and the guide sleeve gland 8 are provided with matched positioning bosses. A third valve core sliding cavity is formed in the valve cover 2.
The working process of the invention is as follows:
as shown in FIG. 2, the medium enters the valve seat 5 through the medium inflow passage 1-1, flows through the decompression groove 6-2 on the throttling guide sleeve 6, enters the guide sleeve gland 8 and is discharged from the medium outflow passage 1-2.
The first pressure-adjustable channel, the second pressure-adjustable channel and the third pressure-adjustable channel reduce the pressure of the medium, and when the pressure of the medium needs to be adjusted, the flow areas of the first pressure-adjustable channel, the second pressure-adjustable channel and the third pressure-adjustable channel are controlled by the up-and-down movement of the throttle valve core 7, so that the adjustment of the pressure of the medium is realized.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A multi-section pressure reduction single-seat regulating valve adopting a throttling guide sleeve is characterized by comprising a valve body (1), a guide sleeve gland (8) and a valve seat (5) which are mutually sealed are sequentially arranged in the valve body (1) from top to bottom, a throttling valve core (7) is arranged in the guide sleeve gland (8) and the valve seat (5) in a sliding manner, a first pressure-adjustable channel is arranged between the valve seat (5) and the throttling valve core (7), and a second pressure-adjustable channel and a third pressure-adjustable channel are arranged between the middle part of the guide sleeve gland (8) and the throttling valve core (7); the lower part of the valve body (1) is provided with a medium inflow channel (1-1) and a medium outflow channel (1-2), the medium inflow channel (1-1) is communicated with the valve seat (5), and the medium outflow channel (1-2) is communicated with the upper part of the guide sleeve gland (8); a throttling guide sleeve (6) is arranged in the valve seat (5) and the guide sleeve gland (8), and the throttling guide sleeve (6) is communicated with the first pressure-adjustable channel and the second pressure-adjustable channel.
2. The multi-stage pressure reducing single-seat regulating valve using the throttling guide sleeve as claimed in claim 1, wherein a guide sleeve gland chamber and a valve seat chamber are sequentially opened in the valve body (1) from top to bottom, and a medium inflow passage (1-1) is communicated below the valve seat chamber.
3. The multi-stage pressure reduction single-seat regulating valve adopting the throttling guide sleeve as claimed in claim 1, wherein a first valve core sliding cavity (5-1) is formed in the valve seat (5), a first pressure regulating hole (5-2) is communicated below the first valve core sliding cavity (5-1), and the first pressure regulating hole (5-2) is communicated with the medium inflow channel (1-1).
4. The multi-stage pressure reducing single-seat regulating valve adopting the throttling guide sleeve as claimed in claim 1, wherein a valve seat positioning boss is arranged at the upper part of the valve seat (5), and a gland lower positioning boss is arranged at the bottom of the guide sleeve gland (8).
5. The multi-stage pressure reducing single seat regulating valve using the throttling guide sleeve as claimed in claim 3, wherein the first pressure regulating hole (5-2) is of a round angle structure.
6. The multi-stage pressure reduction single-seat regulating valve adopting the throttling guide sleeve as claimed in claim 3, wherein the guide sleeve gland (8) is provided with a second valve core sliding cavity (8-1), the lower part of the second valve core sliding cavity (8-1) is communicated with a first valve core sliding cavity (5-1), a second pressure regulating hole (8-2) and a third pressure regulating hole (8-3) are sequentially arranged in the second valve core sliding cavity (8-1) from bottom to top, the side surface of the second valve core sliding cavity (8-1) is communicated with a guide sleeve gland medium outflow channel (8-4), and the guide sleeve gland medium outflow channel (8-4) is communicated with a medium outflow channel (1-2).
7. The multi-section pressure reduction single-seat regulating valve adopting the throttling guide sleeve as claimed in claim 6, wherein the throttling valve core (7) is sequentially provided with a first throttling shaft section (7-1), a second throttling shaft section (7-2) and a third throttling shaft section (7-3) from bottom to top, the first throttling shaft section (7-1), the second throttling shaft section (7-2) and the third throttling shaft section (7-3) are respectively positioned in the first pressure regulating hole (5-2), the second pressure regulating hole (8-2) and the third pressure regulating hole (8-3), and a first pressure regulating channel is respectively formed by the gaps between the first throttling shaft section (7-1), the second throttling shaft section (7-2), the third throttling shaft section (7-3), the first pressure regulating hole (5-2), the second pressure regulating hole (8-2) and the third pressure regulating hole (8-3), A second pressure-adjustable channel and a third pressure-adjustable channel.
8. The multi-stage pressure reducing single-seat regulating valve using the throttling guide sleeve as claimed in claim 1, wherein the first throttling shaft section (7-1), the second throttling shaft section (7-2) and the third throttling shaft section (7-3) are of a structure gradually contracted from top to bottom.
9. The multi-stage pressure reducing single-seat regulating valve using the throttling guide sleeve according to claim 8, wherein the lower ends of the second throttling shaft section (7-2) and the third throttling shaft section (7-3) are provided with a speed reducing groove (7-4).
10. The multi-stage pressure reduction single-seat regulating valve adopting the throttling guide sleeve as claimed in claim 1, wherein a valve core positioning hole (6-1) is formed in the throttling guide sleeve (6), and a plurality of pressure reduction grooves (6-2) are vertically and uniformly distributed on the inner periphery of the valve core positioning hole (6-1); the throttle valve core (7) is provided with a positioning flange (7-5) which is positioned between the first throttle shaft section (7-1) and the second throttle shaft section (7-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111515670.3A CN114183538B (en) | 2021-12-13 | 2021-12-13 | Multi-section decompression single-seat regulating valve adopting throttling guide sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111515670.3A CN114183538B (en) | 2021-12-13 | 2021-12-13 | Multi-section decompression single-seat regulating valve adopting throttling guide sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114183538A true CN114183538A (en) | 2022-03-15 |
| CN114183538B CN114183538B (en) | 2023-11-17 |
Family
ID=80543405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111515670.3A Active CN114183538B (en) | 2021-12-13 | 2021-12-13 | Multi-section decompression single-seat regulating valve adopting throttling guide sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114183538B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6578604B1 (en) * | 1999-08-03 | 2003-06-17 | Sidel | Ball valve with slot for continuous flow |
| US20080282717A1 (en) * | 2005-02-28 | 2008-11-20 | Daikin Industries Ltd. | Expansion Valve and Refrigeration Device |
| JP2012177470A (en) * | 2011-01-31 | 2012-09-13 | Saginomiya Seisakusho Inc | Throttle valve device |
| CN102705574A (en) * | 2012-05-31 | 2012-10-03 | 无锡宝牛阀业有限公司 | Pressure balancing type multi-section and multi-stage depressurization sleeve guiding regulating valve |
| CN102979923A (en) * | 2012-11-30 | 2013-03-20 | 无锡智能自控工程股份有限公司 | Reduced pressure regulating valve special for reflowing of liquid oxygen pump |
| CN105134984A (en) * | 2015-10-16 | 2015-12-09 | 吴忠仪表有限责任公司 | Low-flow-rate high-differential-pressure double-helix pressure reduction control valve |
| CN111779842A (en) * | 2020-07-13 | 2020-10-16 | 吴忠中创自控阀有限公司 | Regulating valve for hot-melt salt |
| JP2021055711A (en) * | 2019-09-27 | 2021-04-08 | 株式会社鷺宮製作所 | Motor-driven valve and refrigeration cycle system |
| CN213419894U (en) * | 2020-07-28 | 2021-06-11 | 北京航天石化技术装备工程有限公司 | Pressure reducing regulating valve |
-
2021
- 2021-12-13 CN CN202111515670.3A patent/CN114183538B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6578604B1 (en) * | 1999-08-03 | 2003-06-17 | Sidel | Ball valve with slot for continuous flow |
| US20080282717A1 (en) * | 2005-02-28 | 2008-11-20 | Daikin Industries Ltd. | Expansion Valve and Refrigeration Device |
| JP2012177470A (en) * | 2011-01-31 | 2012-09-13 | Saginomiya Seisakusho Inc | Throttle valve device |
| CN102705574A (en) * | 2012-05-31 | 2012-10-03 | 无锡宝牛阀业有限公司 | Pressure balancing type multi-section and multi-stage depressurization sleeve guiding regulating valve |
| CN102979923A (en) * | 2012-11-30 | 2013-03-20 | 无锡智能自控工程股份有限公司 | Reduced pressure regulating valve special for reflowing of liquid oxygen pump |
| CN105134984A (en) * | 2015-10-16 | 2015-12-09 | 吴忠仪表有限责任公司 | Low-flow-rate high-differential-pressure double-helix pressure reduction control valve |
| JP2021055711A (en) * | 2019-09-27 | 2021-04-08 | 株式会社鷺宮製作所 | Motor-driven valve and refrigeration cycle system |
| CN111779842A (en) * | 2020-07-13 | 2020-10-16 | 吴忠中创自控阀有限公司 | Regulating valve for hot-melt salt |
| CN213419894U (en) * | 2020-07-28 | 2021-06-11 | 北京航天石化技术装备工程有限公司 | Pressure reducing regulating valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114183538B (en) | 2023-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2105120C (en) | High differential pressure control valve | |
| CN206309972U (en) | A kind of Cascade Multistage decompression high-differential-pressure regulating valve | |
| KR20120108934A (en) | Steam valve device and steam turbine plant | |
| CN101737559A (en) | Labyrinth minimum flow control valve | |
| CN110657251A (en) | Series connection valve core double sealing surface multistage pressure reduction regulating valve | |
| CN210890160U (en) | Series connection valve core double sealing surface multistage pressure reduction regulating valve | |
| CN216344165U (en) | Pilot piston type air pressure reducing valve | |
| CN209398624U (en) | Vertical centrifugal pump axial force balance structure | |
| CN114183538A (en) | Multi-section pressure reduction single-seat regulating valve adopting throttling guide sleeve | |
| CN2789516Y (en) | Water supply regulating valve | |
| CN216715298U (en) | Flow pressure regulation control distribution valve | |
| CN105221756A (en) | Stable type stop valve | |
| CN114278396A (en) | Medium-pressure regulating valve for steam turbine with function of continuously regulating steam flow | |
| CN204985775U (en) | Adjustable stop valve | |
| CN208565114U (en) | Pressure regulator valve | |
| CN207178816U (en) | A kind of Novel sleeve regulating valve | |
| CN205896215U (en) | Improve linear labyrinth governing valve | |
| CN217271984U (en) | Double-sealing structure for valve core and valve seat | |
| CN217683433U (en) | High-precision self-operated fluorine-lined pressure reducing valve | |
| CN216240825U (en) | Medium-pressure regulating valve for steam turbine with function of continuously regulating steam flow | |
| CN205155183U (en) | Governing valve with sealed face of protection disk seat case | |
| CN116123303B (en) | Cage type regulating valve and flow regulating method | |
| CN218000551U (en) | Closestool surge damping valve | |
| CN217328477U (en) | Labyrinth regulating valve with throttling and pressure reducing orifice plate | |
| CN211371454U (en) | Water supply regulating valve throttling assembly structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |