CN114483987A - Flow regulating valve - Google Patents
Flow regulating valve Download PDFInfo
- Publication number
- CN114483987A CN114483987A CN202111502591.9A CN202111502591A CN114483987A CN 114483987 A CN114483987 A CN 114483987A CN 202111502591 A CN202111502591 A CN 202111502591A CN 114483987 A CN114483987 A CN 114483987A
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- Prior art keywords
- shell
- filter
- flow
- valve
- support frame
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- 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.)
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 3
- 238000010894 electron beam technology Methods 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 210000003739 neck Anatomy 0.000 claims 5
- 239000000945 filler Substances 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 11
- 238000011900 installation process Methods 0.000 abstract description 3
- 238000003860 storage Methods 0.000 description 12
- 239000007788 liquid Substances 0.000 description 11
- 239000003380 propellant Substances 0.000 description 11
- 238000013461 design Methods 0.000 description 6
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000011160 research Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 235000015842 Hesperis Nutrition 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/04—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members
- F16K3/06—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages
- F16K3/08—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular plates rotatable around their centres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
- B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
- B01D35/046—Plug, tap, or cock filters filtering elements mounted in or on a faucet the filtering element being mounted in the faucet plug
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/34—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a flow regulating valve, wherein a shell A is in threaded connection with a shell B, a filter assembly is arranged in the shell A, the head of the shell A is connected with a ball head by adopting a 60-degree pipe connecting pipe, the neck of the shell A is provided with a thread groove for mounting the filter assembly, the interior of the shell A is in a step shape and is used for limiting and fixing a wheel disc supporting frame, the wheel disc supporting frame is provided with three hole sites with different diameters, the circumferential included angle of the three hole sites is 120 degrees, the three hole sites are conical surfaces, three groups of valve cores with different diameters are arranged into conical surfaces and are matched with the three hole sites to form a sealing surface, a supporting spring is connected with a valve core seat, and a supporting baffle is pressed on the supporting spring. The problem of adapting to the flow by repeatedly debugging in the test debugging process is solved, and the flow control is realized by continuously changing the sectional area. The working efficiency and the stability of the product installation process are improved, so that rapidness and accuracy are achieved.
Description
Technical Field
The invention relates to the technical field of flow regulation of liquid rocket systems, in particular to a flow regulating valve.
Background
The liquid rocket system needs to match the flow resistance of a single machine of each system and the flow resistance of pipelines in the design process, and because the actual pipeline configuration has differences, the flow resistance test needs to be carried out on the pipelines of the whole set of system to obtain the flow resistance of each section of pipeline, and according to the flow resistance test, a pore plate can be added in the pipeline to provide proper flow to be conveyed to a rocket engine. In the existing work, all the pipelines are connected to an engine outlet from an inlet according to the design requirements of the system, and because the working conditions of the engine in the system are different and the flow rate is different, the same branch needs to be subjected to data acquisition under different flow rates in order to obtain accurate pipeline flow resistance. On site, two workers are needed to cooperate with the hand valve to enable the output pressure under the specified flow to reach more than 1 MPa. In the actual regulating project, the outlet pressure often cannot meet the requirement when the flow rate meets the requirement. The adjustment is required to be repeated, which is time-consuming and labor-consuming. In actual work, a specific orifice plate can be machined according to actual needs, and the output pressure value under the flow is adjusted to be a required value. The specific orifice plate needs to be replaced continuously during the test, but the tightening needs to be replaced frequently during the replacement.
The liquid rocket system has complex test and heavy time and task, in order to improve the bearing capacity, the current spacecraft propulsion systems of large-scale stationary orbit satellites, spacecrafts, deep space probes, rockets and the like generally adopt a layout configuration with a plurality of parallel storage tanks, the storage tanks of the same type of propellant are connected in parallel to supply the propellant for one engine, and the phenomenon of unbalanced propellant consumption in different storage tanks exists in the working section of a main engine due to asymmetrical layout of branch conveying pipelines of the parallel storage tanks of the same type of propellant and different pipeline lengths and flow resistances in the working process of the spacecraft. There will be a difference in the quality of propellant consumption in two parallel tanks of the same component, which is referred to as the amount of parallel tank discharge imbalance. The phenomenon can cause larger mass center deviation in the flight process, so that the control force margin of the attitude control system of the spacecraft is reduced, the consumption of the attitude control propellant is increased, when the propellant of one storage tank is exhausted in advance, the conveying system cannot guarantee to provide pure liquid phase propellant for the engine, the propellants of other storage tanks cannot be used continuously, the propellant unavailability of the main power can be greatly increased, and the carrying capacity is greatly influenced. In order to ensure the consumption synchronism of the propellant in the parallel storage tanks in the flight process of the spacecraft, a flow balance valve needs to be introduced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the flow regulating valve and the flow balance valve, which can improve the working efficiency and the stability of the product installation process, thereby achieving the purposes of rapidness and precision, and realizing that the research process of liquid discharge debugging and test methods is not limited by factors such as personnel. .
The technical scheme includes that a shell A is in threaded connection with a shell B, a filter assembly is arranged in the shell A, the head of the shell A is connected with a ball head through a 60-degree pipe connecting nozzle, a thread groove used for mounting the filter assembly is formed in the neck of the shell A, the interior of the shell A is in a step shape and used for limiting and fixing a wheel disc supporting frame, three hole sites with different diameters are arranged on the wheel disc supporting frame, the circumferential included angle of the three hole sites is 120 degrees, the three hole sites are conical surfaces, three groups of valve cores with different diameters are arranged into conical surfaces and are matched with the three hole sites to form sealing surfaces, a supporting spring is connected with a valve core seat, and a supporting baffle is pressed on the supporting spring.
Preferably, the filter assembly comprises a filter shell, a filter screen and a filter press ring, the outer side of the filter shell is provided with a thread which can be arranged in a thread groove at the neck of the shell, the filter screen and the filter press ring are welded by resistance welding, and the filter shell is axially placed in the filter shell.
Preferably, the filter screen of the filter is made of stainless steel.
Preferably, the filter press ring is welded in the filter shell by laser electron beam welding.
Preferably, the shell A and the shell B are sealed through a sealing metal ring.
Preferably, the shell A, the shell B, the shell C and the wheel disc support frame are all made of aluminum alloy materials.
The utility model provides a flow balance valve, the centre of two sets of shell first installs shell third additional, shell third be three way structure, two sets of shell first and shell third threaded connection place in shell first in the filter unit, shell first head adopt 60 to connect the mouth to be connected with the bulb, shell first neck open and to have the thread groove that is used for installing filter unit, shell first inside be the notch cuttype for spacing fixed rim plate support frame, the rim plate support frame on set up the three hole site of diameter difference, three hole site circumference contained angle be 120, three hole site be the conical surface, the case of three different diameters sets up to the conical surface, with three hole site adaptations form sealed face, and supporting spring is connected with the case seat, and the supporting baffle is pressed on supporting spring.
Preferably, the filter assembly comprises a filter shell, a filter screen and a filter press ring, the outer side of the filter shell is provided with a thread which can be arranged in a thread groove at the neck of the shell, the filter screen and the filter press ring are welded by resistance welding, and the filter shell is axially placed in the filter shell.
Preferably, the shell A, the shell C and the wheel disc support frame are all made of aluminum alloy materials.
The invention has the beneficial effects that: the problem of adapting to the flow by repeatedly debugging in the test debugging process is solved, and the flow control is realized by continuously changing the sectional area. The working efficiency and the stability of the product installation process are improved, so that rapidness and accuracy are achieved, and the research process of liquid discharge debugging and test methods is not limited by factors such as personnel. The invention can also be used for gas flow regulation by replacing the rubber gasket. The valve core can be used for flow regulation by three different contact areas and springs. Other flow designs are made by calculating the replaceable spring. The whole structure adopts threaded connection, and the replacement, adjustment and use are convenient.
Drawings
FIG. 1 is a view of an external model of a flow control valve according to the present invention.
Fig. 2 is an axial sectional view of the flow control valve of the present invention.
Fig. 3 is an exploded view of the flow control valve of the present invention.
Fig. 4 is a structural view of a flow control valve housing A of the invention.
FIG. 5 is a block diagram of a flow control valve filter assembly according to the present invention.
Fig. 6 is a supporting structure view of the flow control valve disk of the present invention.
FIG. 7 is a view of an external model of the housing of the flow balance valve of the present invention.
FIG. 8 is a diagram of an external model of the flow balance valve of the present invention.
Fig. 9 is a cross-sectional axial view of the flow balance valve of the present invention.
FIG. 10 is a schematic view of a flow control valve according to the present invention applied to system piping.
FIG. 11 is a schematic view of the flow control valve of the present invention applied to a two-tank balance.
The labels in the figure are: 1. the filter comprises a shell A, a filter shell 2, a filter screen 3, a filter press ring 4, a wheel disc support frame 5, a valve core 6, a support spring 7, a support baffle 8, an orifice plate 9, a sealing metal ring 10 and a shell B11.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein can be arranged and designed in a wide variety of different configurations.
As shown in fig. 1 to 6, in the flow control valve, a housing a 1 and a housing b 11 of a cavity structure are in threaded connection, and the housing b 11 and the housing a 1 are made of aluminum alloy. And sealed through sealed metal ring 10, place in shell first 1 in the filter assembly, the filter assembly includes filter casing 2, filter screen 3 and filter clamping ring 4, shell first 1 head adopts 60 to connect the mouth, is connected with the bulb and guarantees sealedly, shell first 1 neck is opened there is the thread groove for install the filter assembly, shell first 1 is inside to be the notch cuttype, the spacing fixed rim plate support frame 5 of being convenient for, the filter casing 2 outside has the screw thread can install in shell first 1 neck thread groove. The filter screen 3 is made of stainless steel, the filter screen 3 and the filter press ring 4 are welded together in an electric resistance welding mode, the filter casing 2 is axially placed, and the filter press ring 4 is welded in the filter casing 2 through laser electron beam welding after the filter screen is fixed. Wheel disc support frame 5 is formed for aluminum alloy processing, sets up the three hole site of diameter difference on wheel disc support frame 5, and three hole site circumference contained angle is 120 case 6 for different diameters, and wheel disc support frame 5's hole site is the circular conical surface, and the case 6 conical surface contact with three group's different diameters forms sealed face, because case 6 is the conical surface design, has both solved the spacing effect that can reach certain sealed again of axial. Supporting spring 7 one end is laid in the case seat, and other end supporting baffle 8 presses on supporting spring 7, screws up the back when two parts casing spiral, and sealed metal ring 10 is laid at 11 screw threads front ends of shell second, and flow control valve is through installing shell third additional, integrates two parts through shell first 1 replacement shell second 11, becomes flow balance valve, and shell third is located two sets of shell first 1's intermediate position, and shell third is the aluminum alloy material. And adjusting the flow resistance to a value in a matching range to form the product flow balance valve. The product can be according to the removable orifice plate of different flow of demand and opening pressure and spring.
Example 1. regulating circuit, as shown in fig. 10.
In the process of pipeline liquid flow test, the back pressure (the pressure at the rear end, which is generally used for describing the pressure opposite to the flow direction received by the fluid discharged from the system at the outlet or the secondary side) during the flow conversion regulation is solved to meet the requirement of more than 1MPa (in order to avoid cavitation in the pipeline and influence the test pressure parameter). The design of the invention can be suitable for switching under three different flows to ensure that the back pressure is more than 1 MPa. And multiple flow regulation can be designed according to flow requirements subsequently, and the valve core part in the design is three independent valve cores which are opened in sequence according to different flows.
The system is connected to a system flow table according to a system pipeline, each pipeline, a hand valve, a pressure gauge, a flow meter and a flow regulating valve are connected (B, C, D, E, F can be screwed by a plug when the pipeline A is used), and the outlet end of the flow regulating valve is connected with a hose to be connected into a sewer well. Before the test, checking that each connection part of the pipeline has no leakage point, starting a system flow table, adjusting the flow according to the test requirement by an operator, adjusting a hand valve by observing the indication of a flowmeter by the operator, satisfying more than 1MPa by observing a pressure gauge A, and recording data after the indications of the flowmeter and the pressure gauge are stable; the next flow rate is then adjusted. And (4) testing the three flows of the pipeline A and then replacing the flow regulating valve with the next pipeline.
Example 2.
The characteristic of adjusting the flow by using the structure of the invention ensures that the output flows of the two storage tanks are consistent. The storage tank is used as a container for storing liquid in the liquid rocket, liquid in the liquid cavity is squeezed into a system pipeline through a gas squeezing metal diaphragm in the using process, and the residual quantity of the two storage tanks is different and the system is deflected due to the fact that the metal diaphragms of the storage tank have different thicknesses and different design deviation values and the turnover pressures on the two sides are different, and the residual quantity of the two storage tanks is easy to be different due to long-term discharge. The invention is introduced into a system pipeline, and the flow rate is regulated by regulating the opening of valve cores on two sides. The tank synchronous discharge test research is carried out, as shown in fig. 11, firstly, the upper limit and the lower limit of the discharge of the titanium alloy tank under different working conditions and the synchronous discharge capacity under the complex working conditions are simulated by a finite element method. To verify the synchronous discharge capacity of the tank. And (3) switching each working condition by opening and closing the corresponding electromagnetic valve in the test, and controlling the flow of each working condition through the throttle orifice behind the electromagnetic valve. Each orifice plate should be checked and adjusted on a liquid flow test bed to ensure that the flow meets the requirements under the corresponding working conditions. If the working condition branch is not enough, the orifice plate is allowed to be replaced. In each discharging process, the difference of the turnover pressure when the metal diaphragm turns over is simulated by the pressure difference delta P0 of the air pressure of the air cavity, and synchronous discharging tests are respectively carried out according to the conditions that delta P0 is 0.03MPa and delta P0 is 0.02 MPa. And recording the discharge time, the pipeline pressure and the data of each pressure sensor and each weighing sensor.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A flow control valve characterized in that: shell A and shell second threaded connection place in the shell first in the filter subassembly, shell first's head adopt 60 filler necks to be connected with the bulb, shell first neck open and to have the thread groove that is used for installing filter subassembly, shell first inside be the notch cuttype for spacing fixed wheel dish support frame, the wheel dish support frame on set up the different three hole sites of diameter, three hole site circumference contained angle be 120, three hole site be the conical surface, the case of three different diameters sets up into the conical surface, with three hole site adaptation forms sealed face, and supporting spring is connected with the case seat, and the supporting baffle presses on supporting spring.
2. A flow regulating valve as claimed in claim 1, wherein: the filter assembly comprises a filter shell, a filter screen and a filter press ring, the outer side of the filter shell can be installed in a thread groove of the first neck of the shell through threads, the filter screen and the filter press ring are welded in an electric resistance welding mode, and the filter shell is placed in the axial direction.
3. A flow control valve as claimed in claim 2, characterized in that: the filter screen of the filter is made of stainless steel.
4. A flow regulating valve as claimed in claim 2, wherein: the filter press ring is welded in the filter shell by laser electron beam welding.
5. A flow regulating valve as claimed in claim 1, wherein: the shell A and the shell B are sealed through a sealing metal ring.
6. A flow regulating valve as claimed in claim 1, wherein: the shell A, the shell B, the shell C and the wheel disc support frame are all made of aluminum alloy materials.
7. The utility model provides a flow balance valve, its characterized in that, two sets of shells first the centre install shell third additional, shell third be three way type structure, two sets of shells first and shell third threaded connection, place shell first in the filter assembly in, shell first's head adopt 60 to connect the mouth to be connected with the bulb, shell first neck open and to have the thread groove that is used for installing filter assembly, shell first inside be the notch cuttype for spacing fixed rim plate support frame, the rim plate support frame on set up the different three hole sites of diameter, three hole site circumference contained angle be 120, three hole site be the conical surface, the case of three different diameters sets up to the conical surface, with three hole site adaptation forms sealed face, supporting spring is connected with the case seat, and supporting baffle presses on supporting spring.
8. A flow balance valve as claimed in claim 7, wherein: the filter assembly comprises a filter shell, a filter screen and a filter press ring, the outer side of the filter shell can be installed in a thread groove of the first neck of the shell through threads, the filter screen and the filter press ring are welded in an electric resistance welding mode, and the filter shell is placed in the axial direction.
9. A flow balance valve as claimed in claim 7, wherein: the shell A, the shell C and the wheel disc support frame are all made of aluminum alloy materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111502591.9A CN114483987A (en) | 2021-12-09 | 2021-12-09 | Flow regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111502591.9A CN114483987A (en) | 2021-12-09 | 2021-12-09 | Flow regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114483987A true CN114483987A (en) | 2022-05-13 |
Family
ID=81492249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111502591.9A Pending CN114483987A (en) | 2021-12-09 | 2021-12-09 | Flow regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114483987A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168768A (en) * | 2011-04-20 | 2011-08-31 | 林文华 | Anti-blockage cutoff non-return regulating valve |
| US20110284104A1 (en) * | 2010-05-24 | 2011-11-24 | Riano Gutierrez Ismael Hernan | Automatic flow regulator valve |
| CN103775668A (en) * | 2013-04-27 | 2014-05-07 | 广州海鸥卫浴用品股份有限公司 | Jet flow valve element |
| CN206246746U (en) * | 2016-12-01 | 2017-06-13 | 中国人民解放军第五七二一工厂 | A kind of Pneumatic unidirectional controls valve |
| CN207486147U (en) * | 2017-11-22 | 2018-06-12 | 上海阳一阀门有限公司 | A kind of regulating valve with filter |
| JP2019045058A (en) * | 2017-08-31 | 2019-03-22 | 株式会社前川製作所 | Flow regulating valve |
| CN109990108A (en) * | 2019-04-04 | 2019-07-09 | 新乡航空工业(集团)有限公司 | More specification spool combined type exact flow rate regulating valves |
-
2021
- 2021-12-09 CN CN202111502591.9A patent/CN114483987A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110284104A1 (en) * | 2010-05-24 | 2011-11-24 | Riano Gutierrez Ismael Hernan | Automatic flow regulator valve |
| CN102168768A (en) * | 2011-04-20 | 2011-08-31 | 林文华 | Anti-blockage cutoff non-return regulating valve |
| CN103775668A (en) * | 2013-04-27 | 2014-05-07 | 广州海鸥卫浴用品股份有限公司 | Jet flow valve element |
| US20150240955A1 (en) * | 2013-04-27 | 2015-08-27 | Guangzhou Seagull Kitchen And Bath Products Co., Ltd. | A jet valve spool |
| CN206246746U (en) * | 2016-12-01 | 2017-06-13 | 中国人民解放军第五七二一工厂 | A kind of Pneumatic unidirectional controls valve |
| JP2019045058A (en) * | 2017-08-31 | 2019-03-22 | 株式会社前川製作所 | Flow regulating valve |
| CN207486147U (en) * | 2017-11-22 | 2018-06-12 | 上海阳一阀门有限公司 | A kind of regulating valve with filter |
| CN109990108A (en) * | 2019-04-04 | 2019-07-09 | 新乡航空工业(集团)有限公司 | More specification spool combined type exact flow rate regulating valves |
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