CN109958804B - Proportional pressure stabilizing valve - Google Patents
Proportional pressure stabilizing valve Download PDFInfo
- Publication number
- CN109958804B CN109958804B CN201711436187.XA CN201711436187A CN109958804B CN 109958804 B CN109958804 B CN 109958804B CN 201711436187 A CN201711436187 A CN 201711436187A CN 109958804 B CN109958804 B CN 109958804B
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- China
- Prior art keywords
- valve
- cavity
- communicated
- plug
- chamber
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Links
- 230000000087 stabilizing effect Effects 0.000 title abstract description 18
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 230000005389 magnetism Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 4
- 239000000696 magnetic material Substances 0.000 claims description 3
- 238000010992 reflux Methods 0.000 abstract description 8
- 239000007789 gas Substances 0.000 description 24
- 239000002737 fuel gas Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 125000006850 spacer group Chemical group 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
-
- 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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
-
- 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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/124—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston servo actuated
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/14—Control of fluid pressure with auxiliary non-electric power
- G05D16/16—Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid
- G05D16/166—Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid using pistons within the main valve
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention relates to a proportional pressure stabilizing valve, comprising: the valve body is internally provided with an air inlet cavity communicated with the air inlet, an air outlet cavity communicated with the air outlet and a valve cavity; the valve rod is movably arranged in the valve cavity; the valve plug is connected with the first end of the valve rod, and the valve cavity and the air outlet cavity are opened and closed through movement of the valve plug; a first elastic assembly drivingly connected to the second end of the valve stem; characterized by further comprising: the driving device is in driving connection with the second end of the valve rod and is used for driving the valve rod to move; a second elastic component drivingly connected with the valve plug for providing a driving force for resetting the valve plug; a return passage arranged on the wall of the valve body, wherein an inlet of the return passage is communicated with the air outlet cavity; a return chamber disposed within the valve body, at least a portion of the valve plug being received within the return chamber, and the valve plug being movable relative to the return chamber; and the outlet of the reflux channel is communicated with the reflux cavity.
Description
Technical Field
The invention relates to a proportional pressure stabilizing valve.
Background
At present, for the use safety of a gas water heater, a pressure stabilizing valve is generally arranged on the gas water heater, a pressure stabilizing tube is arranged between a gas pipeline and a gas inlet of the gas water heater and used for reducing and stabilizing the gas pressure entering the gas water heater, but a plurality of gas pressure stabilizing valves used at present are poor in pressure stabilizing performance and large in pressure fluctuation, the fire power of the gas water heater is not easy to control, and the risk of gas leakage exists.
CN205978678U discloses a double-stop gas pressure-stabilizing valve, which comprises a valve body, the valve body has the inlet section that vertically sets up and the section of giving vent to anger of transversely setting, inlet section tip integrated into one piece has the inlet joint, be equipped with connecting screw on the inlet joint outer wall, inlet joint upper end is equipped with the connecting plate, outlet section tip integrated into one piece has the joint of giving vent to anger, be equipped with the engaging lug on the outlet joint outlet end outer wall, be equipped with the inlet chamber in the inlet section, be equipped with the transition chamber in proper order from being connected with inlet section link to the other end in the section of giving vent to anger, the steady voltage chamber, the air-out chamber, install the preceding stage stop valve subassembly that is used for break-make inlet chamber and transition chamber on the valve body, the spacer ring is equipped with the spacer ring in the steady voltage chamber, the spacer ring separates the steady voltage chamber into steady voltage outer chamber and steady voltage inner chamber, steady voltage outer chamber and air outlet chamber intercommunication, steady voltage inner chamber and transition chamber intercommunication, steady voltage inner chamber in-steady voltage inner connection has steady voltage valve subassembly, steady voltage valve subassembly includes steady voltage involucra, the involucra, valve core, valve clack, the apron, valve core one end is connected on the steady voltage involucra, the valve seat is connected on the valve clack, the valve seat is connected on the end, the valve seat is connected on the valve clack, the valve seat is connected at the end, the valve seat is connected at the valve core, the valve seat is connected at the valve, the valve seat is close to the die, the die is connected at the valve seat, can be installed at the valve seat, valve seat edge is close at the valve top, and can be connected at the valve seat, valve top edge, and spring opening edge is closed at the top, and spring.
The pressure stabilizing valve is arranged at the position of the gas inlet in a feedback way, the fluctuation of the gas inlet pressure is adapted through the elasticity of the spring, the real-time outlet pressure of the outlet cavity cannot be known, and the control precision of the outlet pressure is low.
Disclosure of Invention
The invention aims to solve the technical problem of providing the proportional pressure stabilizing valve with the feedback type outlet pressure aiming at the current state of the art, so that the outlet pressure is controlled more accurately.
The technical scheme adopted for solving the technical problems is as follows: the proportional pressure regulating valve includes:
the valve body is internally provided with an air inlet cavity communicated with an air inlet on the valve body, an air outlet cavity communicated with an air outlet on the valve body and a valve cavity arranged between the air inlet cavity and the air outlet cavity;
the valve rod is movably arranged in the valve cavity;
the valve plug is connected with the first end of the valve rod, and the valve cavity and the air outlet cavity are opened and closed through movement of the valve plug;
a first elastic assembly drivingly connected to the second end of the valve stem;
characterized by further comprising:
the driving device is in driving connection with the second end of the valve rod and is used for driving the valve rod to move;
a second elastic component drivingly connected with the valve plug for providing a driving force for resetting the valve plug;
the backflow channel is arranged on the wall of the valve body, and an inlet of the backflow channel is communicated with the air outlet cavity;
a return chamber disposed within the valve body, at least a portion of the valve plug being received within the return chamber, and the valve plug being movable relative to the return chamber; and the outlet of the reflux channel is communicated with the reflux cavity.
Preferably, a groove may be formed in the valve plug, the second elastic component is accommodated in the groove, and an inlet of the groove is communicated with the backflow cavity and then is communicated with the backflow channel. The recess on the one hand provides the accommodation chamber of elastic component, has still reduced the weight of valve plug simultaneously, has further improved the sensitivity that the valve plug removed.
Preferably, the groove 31 has an inverted "U" shape, which facilitates pushing the valve plug.
Preferably, the second elastic assembly may include a spring seat and a spring provided on an inner wall of the valve body;
the spring is sleeved on the spring seat, and two ends of the spring respectively abut against the bottom surface of the spring seat and the bottom surface of the groove;
the first end of the valve rod is in driving connection with the bottom wall of the groove.
Further, the valve plug may be disposed at a first port of the valve cavity and at an inlet location of the outlet cavity;
the first elastic component is a flexible valve clack, the flexible valve clack is connected with a second port of the valve cavity in a sealing mode, and the flexible valve clack is connected with the valve rod. The use of the flexible valve clack further ensures the air tightness of the valve and prevents the leakage of fuel gas.
The end face area of the first port of the valve cavity is equal to the end face area of the second port of the valve cavity.
The driving device in the above embodiments may have various structures, and preferably, the driving device may include a housing and a coil disposed in the housing and capable of moving relative to the housing, where the coil is drivingly connected to the second end of the valve rod;
the shell is made of magnetic materials; the magnetism generated by the coil when energized is repulsive to the magnetism of the housing.
The housing can be internally provided with a containing cavity for containing the coil, and the housing is provided with an exhaust hole communicated with the containing cavity so as to facilitate exhaust and improve the motion sensitivity of the valve rod.
Compared with the prior art, the proportional pressure stabilizing valve provided by the invention has the advantages that the pressure feedback is arranged at the gas outlet, the real outlet pressure is used for closed-loop feedback, the outlet pressure control is more accurate, the pressure stabilizing performance is obviously improved, and the pressure stabilizing effect is better.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a longitudinal cross-sectional view of FIG. 1;
fig. 3 is a view of the air flow direction marked on the basis of fig. 2.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 to 3, the proportional pressure regulating valve includes:
the valve body 1 is internally provided with an air inlet cavity 12 communicated with an air inlet 11 on the valve body 1, an air outlet cavity 14 communicated with an air outlet 13 on the valve body 1 and a valve cavity 15 positioned between the air inlet cavity 12 and the air outlet cavity 14.
The valve body 1 is also provided with a return channel 16 and a return cavity 17 for accommodating the valve plug 3, and the return channel 16 is communicated with the air outlet cavity 14 and the return cavity 17.
The air inlet 11 and the air outlet 13 in this embodiment are provided on opposite side walls of the valve chamber 15.
The valve rod 2 is movably disposed in the valve chamber 15.
The valve plug 3 is connected with the first end of the valve rod 2, and the valve cavity 15 and the air outlet cavity 14 are opened and closed through the movement of the valve plug 3.
In this embodiment, the valve plug 3 is disposed at the first port 151 of the valve chamber 15 and at the inlet position of the outlet chamber 14; the upper end surface of the valve plug 3 may block or open the first port 151 of the valve chamber 15, and the sidewall of the valve plug may block or open the inlet of the outlet chamber 14.
The valve plug 3 is accommodated in the return chamber 17 and can be reciprocally moved with respect to the return chamber 17.
The valve plug 3 is provided with an inverted U-shaped groove 31, and the inlet of the groove 31 faces downwards to the inner wall of the valve body and is communicated with the reflux cavity 17 and then communicated with the reflux passage 16.
The driving device 4, which is connected to the valve body 1 in correspondence with the second port 152 of the valve chamber 15, comprises a housing 41 and a coil 42 arranged in the housing 41 and movable with respect to the housing 41, the coil 42 being drivingly connected to the second end of the valve stem 2.
The housing 41 is made of a magnetic material; the magnetism generated when the coil 42 is energized is repulsive to the magnetism of the case 41.
In this embodiment, a housing cavity 43 for housing the coil 42 is provided in the housing 41, and an exhaust hole 44 communicating with the housing cavity 43 is provided in the housing 41 for exhausting air in the housing cavity when the valve rod 2 is reset, so that the valve rod is more sensitive to movement.
In this embodiment, an electrical plug 45 is provided on the top of the housing, electrically connected to the coil 42, for connection to an external power source.
The first elastic component 5 is a flexible valve clack, the outer periphery of the flexible valve clack is arranged between the butt-jointed end surfaces of the shell 41 and the valve body 1, the valve clack not only plays a role of sealing the shell and the valve body, but also is in sealing connection with the second port 152 of the valve cavity 11, and the flexible valve clack is connected with the second end part of the valve rod 2.
In this embodiment, the valve rod passes through the middle part of the valve clack, the valve rod 2 is provided with a connecting seat 21, the nut 22 is screwed on the valve rod 2, and the periphery of the central hole of the valve clack is extruded between the nut 22 and the connecting seat 21, so that the second port 152 of the valve cavity 15 is sealed, and the second end part of the valve rod 2 is connected in a driving mode.
A second elastic assembly 6 for providing a driving force for resetting the valve plug 3; comprising a spring seat 61 and a spring 62 provided on the inner wall of the valve body 1 in correspondence with the valve plug 3; the spring 62 is sleeved on the spring seat 61 and is accommodated in the groove 31, and two ends of the spring 62 respectively abut against the bottom surface of the spring seat 61 and the bottom surface of the groove 31;
the first end of the valve stem 2 is drivingly connected to the bottom wall of the recess 31.
In this embodiment, the end surface area of the first port 151 of the valve cavity is equal to the port area of the second port 152 of the valve cavity.
The working principle of the proportional pressure stabilizing valve is described as follows:
when the gas inlet valve works, gas enters the valve cavity from the gas inlet through the gas inlet cavity; the coil is electrified to generate magnetism which is repulsed with the shell, the coil drives the valve rod to move downwards, the valve rod drives the valve plug to move downwards, and the spring is extruded; the valve plug moves downwards to open a first port of the valve cavity, and simultaneously opens an inlet of the air outlet cavity, so that the valve cavity is communicated with the air outlet cavity, and fuel gas enters the air outlet cavity and is discharged through the air outlet; the distance the valve plug moves down, i.e. the opening of the inlet of the air outlet chamber, is controlled by the current applied to the coil.
When the pressure of the fuel gas fluctuates, the pressure entering the air outlet cavity through the valve cavity is increased, the partial flow enters the reflux cavity through the reflux channel, then enters the groove of the valve plug, the groove is extruded upwards, and simultaneously under the auxiliary action of the spring force, the piston moves upwards, the opening of the air outlet cavity inlet is reduced, and therefore the constant air outlet pressure is achieved.
The method comprises the following steps:
when the gas inlet pressure P1 is stable, since the end surface areas of the first port and the second port of the valve chamber are equal, the effective pressure acting area A2 acting on the upper surface of the valve plug is the same as the effective acting area A1 acting on the valve flap, i.e., a1=a2, and the forces of the inlet pressure on the valve plug are offset on these two surfaces.
When the pressure of the fuel gas entering the gas inlet cavity fluctuates and increases, the outlet pressure P2 in the gas outlet cavity is led into the groove of the valve plug through the pressure feedback hole, namely the backflow channel, and an upward acting force is formed on the valve plug, and the acting force tends to enable the valve port, namely the inlet of the gas outlet cavity to be closed. The forces acting on the valve element at this time are:
P1×A1＝P1×A2
P1×A1+k×x1+P2×A3＝P1×A2+f×I
finally, obtaining:
P2＝(f×I-k×x1)/A3
wherein: k-spring modulus; x 1-spring deflection; f-electromagnetic force coefficient; i-current.
As can be seen from the expression P2, the current is proportional to the outlet pressure, and the current and the outlet pressure are in one-to-one correspondence. The gas outlet pressure is proportional to the current flowing into the coil.
When the control current is unchanged and the gas inlet pressure is increased, the outlet pressure is increased. Causing the forces on the valve plug to become unbalanced and the valve plug to move upward, making the valve port smaller and thus the outlet pressure smaller. When the force on the spool reaches equilibrium again:
P1×A1+k×x2+P2×A3＝P1×A2+f×I
finally, obtaining: p2' = (f×i-k×x2)/A3
The outlet pressure changes before and after the comparison change were:
P2'＝(f×I-k×x2)/A3
the outlet pressure changes before and after the comparison change were:
△P＝P2-P2'＝k×(x1-x2)/A3
in this case, the displacement of the spring is smaller, and the spring coefficient of the spring is smaller, so that the change of the spring force can be ignored at this time, and the delta P expression shows that after the change of the spring force is ignored, the change of P2 caused by the change of P1 is close to zero, namely the outlet pressure returns to the original pressure again. Conversely, when the inlet pressure decreases, the above conclusion is also true. The outlet steady state pressure of the valve does not change with changes in the valve inlet pressure. Only a change in the proportional valve current will change the outlet pressure of the valve. Therefore, the proportional pressure stabilizing valve has the function of stabilizing the outlet pressure at the corresponding inlet pressure under the condition of a certain current. And the target value (namely the secondary pressure P2) is used for closed-loop feedback, so that the valve is more stable and reliable in pressure stabilizing performance than the conventional fuel gas proportional valve.
When the valve is required to be closed, the current of the coil is disconnected, the coil loses magnetism, the valve plug moves upwards under the action of the bottom reset spring, and the communication between the valve cavity and the air outlet cavity is cut off; thereby closing the valve.
Claims (8)
1. A proportional pressure regulating valve comprising:
the valve comprises a valve body (1), wherein an air inlet cavity (12) communicated with an air inlet (11) on the valve body (1), an air outlet cavity (14) communicated with an air outlet (13) on the valve body (1) and a valve cavity (15) arranged between the air inlet cavity (12) and the air outlet cavity (14) are arranged in the valve body;
a valve rod (2) movably arranged in the valve cavity (15);
a valve plug (3) connected with the first end of the valve rod (2), and the valve cavity (15) and the air outlet cavity (14) are opened and closed by the movement of the valve plug (3);
a first elastic assembly (5) drivingly connected to the second end of the valve stem (2);
characterized by further comprising:
the driving device (4) is in driving connection with the second end of the valve rod (2) and is used for driving the valve rod (2) to move;
a second elastic component (6) is in driving connection with the valve plug (3) and is used for providing driving force for resetting the valve plug (3);
a return passage (16) arranged on the wall of the valve body (1), wherein an inlet of the return passage (16) is communicated with the air outlet cavity (14);
-a return chamber (17) arranged in the valve body (1), at least part of the valve plug (3) being housed in the return chamber (17), and the valve plug (3) being movable with respect to the return chamber (17); the outlet of the return channel (16) is communicated with the return cavity (17).
2. The proportional pressure regulating valve of claim 1, wherein: the valve plug (3) is provided with a groove (31), the second elastic component (6) is accommodated in the groove (31), and an inlet of the groove (31) is communicated with the backflow cavity (17) and then is communicated with the backflow channel (16).
3. A proportional pressure regulating valve as claimed in claim 2, characterized in that the recess (31) is of inverted "U" shape.
4. The proportional pressure regulating valve of claim 2, wherein: the second elastic component (6) comprises a spring seat (61) and a spring (62) which are arranged on the inner wall of the valve body (1);
the spring (62) is sleeved on the spring seat (61), and two ends of the spring (62) are respectively abutted against the bottom surface of the spring seat (61) and the bottom surface of the groove (31);
the first end of the valve rod (2) is in driving connection with the bottom wall of the groove (31).
5. A proportional pressure regulating valve as claimed in any one of claims 1 to 4, characterized in that the valve plug (3) is arranged at the first port (151) of the valve chamber (15) and at the inlet position of the outlet chamber (14);
the first elastic component (5) is a flexible valve clack, the flexible valve clack is connected with a second port (152) of the valve cavity (15) in a sealing mode, and the flexible valve clack is connected with the valve rod (2).
6. The proportional pressure regulator valve of claim 5, wherein the end surface area of the first port (151) of the valve chamber is equal to the port area of the second port (152) of the valve chamber.
7. A proportional pressure regulating valve as claimed in any one of claims 1 to 4, wherein the drive means (4) comprises a housing (41) and a coil (42) disposed within the housing (41) and movable relative to the housing (41), the coil (42) being drivingly connected to the second end of the valve stem (2);
the shell (41) is made of magnetic materials; the magnetism generated when the coil (42) is energized is repulsive to the magnetism of the case (41).
8. The proportional pressure regulating valve according to claim 7, characterized in that a containing cavity (43) for containing the coil (42) is arranged in the shell (41), and an exhaust hole (44) communicated with the containing cavity (43) is arranged on the shell (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711436187.XA CN109958804B (en) | 2017-12-26 | 2017-12-26 | Proportional pressure stabilizing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711436187.XA CN109958804B (en) | 2017-12-26 | 2017-12-26 | Proportional pressure stabilizing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109958804A CN109958804A (en) | 2019-07-02 |
| CN109958804B true CN109958804B (en) | 2024-01-16 |
Family
ID=67022521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711436187.XA Active CN109958804B (en) | 2017-12-26 | 2017-12-26 | Proportional pressure stabilizing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109958804B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117469447B (en) * | 2023-12-28 | 2024-04-16 | 斯丹德汽车***（苏州）有限公司 | Pressure limiting valve and output stability control method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0769645A1 (en) * | 1995-10-17 | 1997-04-23 | Honeywell Inc. | Proportional valve |
| CN2697415Y (en) * | 2003-11-15 | 2005-05-04 | 宁波方太厨具有限公司 | Pressure stabilizing valve core for water quantity regulation valve of gas water-heater |
| CN201787136U (en) * | 2010-09-29 | 2011-04-06 | 黄依华 | Gas solenoid valve |
| CN102979935A (en) * | 2012-11-22 | 2013-03-20 | 广东新宝电器股份有限公司 | automatic pressure relief valve |
| CN103195735A (en) * | 2013-04-17 | 2013-07-10 | 江苏振华泵业制造有限公司 | Internal reflux valve for self-priming pump |
| CN106958666A (en) * | 2017-04-07 | 2017-07-18 | 宁波方太厨具有限公司 | Inner and outer ring flow gas regulating valve |
| CN207880141U (en) * | 2017-12-26 | 2018-09-18 | 宁波方太厨具有限公司 | A kind of ratio pressure maintaining valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8220774B2 (en) * | 2009-04-30 | 2012-07-17 | Automatic Switch Company | Proportional pilot acting valve |
-
2017
- 2017-12-26 CN CN201711436187.XA patent/CN109958804B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0769645A1 (en) * | 1995-10-17 | 1997-04-23 | Honeywell Inc. | Proportional valve |
| CN2697415Y (en) * | 2003-11-15 | 2005-05-04 | 宁波方太厨具有限公司 | Pressure stabilizing valve core for water quantity regulation valve of gas water-heater |
| CN201787136U (en) * | 2010-09-29 | 2011-04-06 | 黄依华 | Gas solenoid valve |
| CN102979935A (en) * | 2012-11-22 | 2013-03-20 | 广东新宝电器股份有限公司 | automatic pressure relief valve |
| CN103195735A (en) * | 2013-04-17 | 2013-07-10 | 江苏振华泵业制造有限公司 | Internal reflux valve for self-priming pump |
| CN106958666A (en) * | 2017-04-07 | 2017-07-18 | 宁波方太厨具有限公司 | Inner and outer ring flow gas regulating valve |
| CN207880141U (en) * | 2017-12-26 | 2018-09-18 | 宁波方太厨具有限公司 | A kind of ratio pressure maintaining valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109958804A (en) | 2019-07-02 |
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