CN112081973A - Lever type pressure reducing valve and regulating and controlling method thereof - Google Patents
Lever type pressure reducing valve and regulating and controlling method thereof Download PDFInfo
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- CN112081973A CN112081973A CN202011057334.4A CN202011057334A CN112081973A CN 112081973 A CN112081973 A CN 112081973A CN 202011057334 A CN202011057334 A CN 202011057334A CN 112081973 A CN112081973 A CN 112081973A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
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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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
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Abstract
The invention provides a lever type pressure reducing valve and a regulating and controlling method thereof, wherein the pressure reducing valve comprises: the device comprises a shell, a high-pressure cavity and a low-pressure cavity are arranged in the shell, and a high-pressure gas inlet and a low-pressure gas outlet which are respectively communicated with the high-pressure cavity and the low-pressure cavity are arranged on the surface of the shell; a main valve core; one end of the passive valve core is provided with a movable sealing piece, and the movable sealing piece is used for adjusting the communication degree of the high-pressure cavity and the low-pressure cavity; the spherical hinge connecting rod is connected with the active valve core and the passive valve core; the pressure sensing device is used for detecting the air pressure in the low-pressure cavity; and the driving device is connected with the active valve element and is used for controlling the active valve element to move according to the air pressure in the low-pressure cavity detected by the pressure sensing device, so that the passive valve element drives the movable sealing element to move, and the air pressure in the low-pressure cavity is changed. The pressure reducing valve does not need a spring, can avoid the problem of slow rise caused by the change of the rigidity of the spring along with the lapse of time, and can eliminate the influence of pressure fluctuation, so that the pressure reducing effect of the pressure reducing valve is better.
Description
Technical Field
The invention relates to the technical field of high-pressure hydrogen storage, in particular to a lever type pressure reducing valve and a regulating and controlling method thereof.
Background
On one hand, conventional coal, petroleum and natural gas fuels produce a large amount of harmful gases such as carbon dioxide and carbon monoxide during combustion, and on the other hand, these conventional energy sources are gradually exhausted. Hydrogen is taken as an ideal clean energy source, has zero pollution in the using process, is rich in reserves and is renewable, so that the hydrogen is regarded as one of the ultimate energy sources which hopefully replace the traditional fuel. However, the utilization of hydrogen as energy source has difficulties in storage, transportation and use, because the specific gravity of hydrogen is very small and the volume occupied by a small amount of hydrogen is very large, the hydrogen storage methods in research and application at present mainly include various hydrogen storage technologies such as high-pressure gaseous hydrogen storage, cryogenic liquefied hydrogen storage, organic liquid hydrogen storage, and physical solid hydrogen storage such as porous materials and metal alloys. The hydrogen energy storage and transportation mode which accords with the vehicle specification level is the most feasible high-pressure gaseous hydrogen storage technology at present. At present, 35MPa high-pressure gaseous hydrogen storage is mature in technology and related laws and regulations, 70MPa gaseous hydrogen storage technology is also realized and falls to the ground and starts to be popularized and used, the large-scale application of the high-pressure gaseous hydrogen storage puts high requirements on the safe use of hydrogen, the hydrogen pressure required by a vehicle-mounted fuel cell system is generally within 0.5MPa, a pressure reducing device is used as a core component of the hydrogen system, an indispensable bridge function is played between hydrogen storage and hydrogen use, and the reliability and the safety of the hydrogen fuel cell system are directly influenced by the response time and the pressure adjusting precision of the pressure reducing valve.
The pressure reducing valve adopts the opening degree of an opening and closing piece in a control valve body to adjust the flow rate of a medium so as to reduce the pressure of the medium, and simultaneously adjusts the opening degree of the opening and closing piece by means of the action of the pressure difference between the front and the back of the valve so as to keep the pressure behind the valve within a certain range. The traditional high-pressure reducing valve is a mechanical reducing valve and can be divided into a spring film type, a piston type and a bellows type according to the structural form, and can be divided into a direct-acting type and a pilot type according to the action form. The traditional pressure reducing valve has the working characteristics that pressure is regulated based on a pressure regulating spring, parameters such as spring stiffness, compression amount and the like need to be set in advance aiming at given rear end pressure, and if outlet pressure needs to be changed, the pressure reducing valve needs to be manually re-calibrated. In the working process of the pressure reducing valve, upstream pressure fluctuation can cause great influence on downstream pressure, the problem of slow rise of the pressure reducing valve is not well solved along with the use time due to the change of the rigidity of a spring and the like, the outlet pressure of the pressure reducing valve can slowly rise and exceed the original set value, the pressure fluctuation problem and the slow rise problem cause the practical application of the conventional pressure reducing valve on a vehicle to be complicated, in order to solve the problems, in the traditional scheme, firstly, the internal components such as the spring, a valve core and the like are selected, the stability and the durability are required to be very good, generally, the components are imported, the cost is high, the maintenance is inconvenient, secondly, the pressure fluctuation of the rear end of the pressure reducing valve is large, the rear end of the pressure reducing valve cannot be directly supplied to a fuel cell system for working, functional components such as a hydrogen injector or a proportional valve, increasing the complexity of the system and the risk of leaks.
Therefore, there is a need for a pressure relief valve that does not require a spring, avoids the problems of slow rise and changes in spring stiffness over time, and eliminates the effects of pressure fluctuations.
Disclosure of Invention
The invention aims to provide a lever type pressure reducing valve and a regulating and controlling method thereof.
The technical scheme provided by the invention is as follows:
the invention provides a lever type pressure reducing valve, comprising:
the gas-liquid separator comprises a shell, a gas-liquid separator and a gas-liquid separator, wherein a high-pressure cavity and a low-pressure cavity are arranged inside the shell and are communicated with each other, and a high-pressure gas inlet and a low-pressure gas outlet which are respectively communicated with the high-pressure cavity and the low-pressure cavity are formed in the surface of the shell;
a main valve core;
one end of the passive valve core is provided with a movable sealing element, and the movable sealing element is used for adjusting the communication degree of the high-pressure cavity and the low-pressure cavity;
one end of the spherical hinge connecting rod is connected with one end of the active valve core through a first spherical hinge, and the other end of the spherical hinge connecting rod is fixedly connected with the other end of the passive valve core;
the pressure sensing device is arranged at the low-pressure gas outlet and used for detecting the gas pressure in the low-pressure cavity;
the driving device is arranged on the shell and penetrates through the shell to be connected with the other end of the active valve core, and the driving device is used for controlling the active valve core to move according to the air pressure in the low-pressure cavity detected by the pressure sensing device, so that the passive valve core drives the movable sealing element to move, and the air pressure in the low-pressure cavity is changed.
By arranging the active valve core and the passive valve core which are connected through the spherical hinge connecting rod, the active valve core is connected with the driving device, the passive valve core is connected with the movable sealing piece for adjusting the communication degree of the high-pressure cavity and the low-pressure cavity, so that when the air pressure in the low-pressure cavity does not meet the preset standard, the active valve core can be controlled by the driving device to move and drive the passive valve core and the movable sealing piece to adjust, thereby changing the communication degree of the high-pressure cavity and the low-pressure cavity, and adjusting the air pressure in the low-pressure cavity along with the air pressure to achieve the control effect of the pressure reducing valve. The pressure reducing effect of the pressure reducing valve is better.
Furthermore, a guide sleeve communicated with the high-pressure cavity is arranged on the shell, the active valve core moves along the guide sleeve,
the driving device is arranged outside the guide sleeve.
Through setting up the uide bushing, can make the initiative case remove along the uide bushing to the removal of initiative case is led, avoids the initiative case side to move, makes the control deviation appear.
Further, the outside of the guide sleeve is closed,
the driving device is an electromagnetic driving device and drives the driving valve core to move along the guide sleeve.
The outer portion of the guide sleeve is arranged to be closed, and the driving device is arranged to be the electromagnetic driving device, so that the driving valve core can be driven to move through electromagnetism generated by the electromagnetic driving device, sealing of the device is achieved, and gas leakage is avoided.
Furthermore, the active valve core and the passive valve core are both vertically arranged, and the spherical hinge connecting rod is obliquely and downwards arranged.
Through with the vertical setting of active valve core and passive case, the slope of ball pivot connecting rod sets up downwards, can be convenient for carry out active valve core adjustment process according to the length, the position etc. of active valve core, passive case, ball pivot connecting rod and calculate.
Further, the ball joint connecting rod comprises a first arm and a second arm, the first ball joint is arranged at the top end of the first arm, the passive valve core is connected at the joint of the first arm and the second arm,
the side of the high-pressure cavity is provided with a sliding pair, and the bottom end of the second arm is movably connected with the sliding pair through a second spherical hinge.
Through including first arm and second arm with the ball pivot connecting rod setting, first ball pivot sets up the top at first arm, the junction at first arm and second arm is connected to passive case, the side in high pressure chamber is provided with the slip pair, the bottom of second arm is through second ball pivot and slip pair swing joint, when making the initiative case reciprocate, the bottom of second arm can slide in the slip pair, and drive passive case removal, thereby make the movable sealing member of passive case bottom change the intercommunication degree in high pressure chamber and low pressure chamber.
Further, the length of the first arm is greater than the length of the second arm.
The length of the first arm is set to be larger than that of the second arm and is far larger than that of the second arm, so that large displacement fluctuation on the active valve core can be converted into small displacement fluctuation and large axial force of the passive valve core, and accurate regulation and control of pressure and flow under the condition of large differential pressure at the front end and the rear end of the pressure reducing valve are achieved.
Further, a pressure relief valve is provided on a surface of the housing in communication with the low pressure chamber.
Through setting up the relief valve, can carry out quick adjustment to the atmospheric pressure in the low pressure chamber, the adjustment of atmospheric pressure in the low pressure chamber of recombination initiative case, passive case can make the atmospheric pressure adjustment of relief valve more nimble convenient.
Further, the movable sealing element is spherical, and a groove matched with the spherical movable sealing element is arranged at the joint of the high-pressure cavity and the low-pressure cavity.
Through setting up movable sealing member into spherical, and the junction in high pressure chamber and low pressure chamber be provided with be the recess of spherical movable sealing member matching for the adjustment to the intercommunication degree in high pressure chamber and low pressure chamber is more steady, accurate, avoids the adjustment range too big.
In addition, the invention also provides a regulation and control method for the lever type pressure reducing valve, which comprises the following steps:
acquiring the current air pressure in the low-pressure cavity through a pressure sensing device;
comparing the current air pressure with a preset air pressure through a controller;
calculating the process that the active valve element needs to move when the current air pressure reaches the preset air pressure according to the position relation of the active valve element, the passive valve element and the spherical hinge connecting rod;
and controlling the active valve core to move according to the process through a driving device.
The current air pressure in the low-pressure cavity can be obtained in real time through the pressure sensing device, the current air pressure is compared with the actually required preset air pressure, the process that the active valve element needs to move when the current air pressure reaches the preset air pressure can be calculated according to the position relation of the active valve element, the passive valve element and the spherical hinge connecting rod, and finally the air pressure in the low-pressure cavity can reach the preset requirement by controlling the active valve element to move according to the calculated process through the driving device. Through the regulation and control method of this scheme, owing to need not use the spring, but use the lever connecting piece that connects the rigidity better, consequently can not appear passing along with time, the spring rigidity changes, leads to the condition that rises slowly to appear, and because the connecting piece rigidity of lever is better, control is more accurate, can eliminate the influence of pressure oscillation for the decompression effect of relief pressure valve is better.
Further, after the active valve core is controlled by the driving device to move according to the process, the method further comprises the following steps:
feeding back a change result of the current air pressure after the active valve core moves;
and adjusting the driving of the driving device according to the change result.
When the active valve element is controlled to move according to the calculated process, the change condition of the air pressure in the low-pressure cavity can be monitored in real time, and the change condition is fed back to the driving device, so that the driving device can be adjusted according to the actual condition, and the pressure reduction control of the device is more accurate.
According to the lever type pressure reducing valve and the regulation and control method thereof provided by the invention, the active valve core and the passive valve core are arranged and are connected through the spherical hinge connecting rod, the active valve core is connected with the driving device, the passive valve core is connected with the movable sealing piece for regulating the communication degree of the high-pressure cavity and the low-pressure cavity, so that when the air pressure in the low-pressure cavity does not meet the preset standard, the active valve core can be controlled to move through the driving device, and the passive valve core and the movable sealing piece are driven to regulate, thereby the communication degree of the high-pressure cavity and the low-pressure cavity is changed, the air pressure in the low-pressure cavity is regulated along with the regulation, and the control effect of the pressure reducing valve is achieved Control is more accurate, can eliminate the influence of pressure fluctuation for the decompression effect of relief pressure valve is better.
Drawings
The foregoing features, technical features, advantages and embodiments of the present invention will be further explained in the following detailed description of the preferred embodiments, which is to be read in connection with the accompanying drawings.
FIG. 1 is a schematic view of an overall vertical cross-sectional structure of an embodiment of the present invention;
FIG. 2 is a schematic view of a ball-and-socket joint linkage according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a housing according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a pressure relief valve according to an embodiment of the invention;
FIG. 5 is a schematic structural diagram of a pressure sensing device according to an embodiment of the present invention;
FIG. 6 is a schematic view of the connection structure of the active valve core, the ball-and-socket joint and the passive valve core according to the embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a driving device according to an embodiment of the present invention;
FIG. 8 is a schematic overall flow diagram of an embodiment of the present invention;
FIG. 9 is a schematic flow chart of an embodiment of the present invention.
Reference numbers in the figures: 1-a shell; 11-a high pressure chamber; 12-a low pressure chamber; 13-high pressure gas inlet; 14-a low pressure gas outlet; 15-a guide sleeve; 16-a sliding pair; 17-a pressure relief valve; 2-a main valve core; 3-a passive valve core; 31-a movable seal; 4-a spherical hinge connecting rod; 41-a first spherical hinge; 42-a second spherical hinge; 5-a pressure sensing device; 6-driving device.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
Example 1
One embodiment of the present invention, as shown in fig. 1 and 2, provides a lever type pressure reducing valve, which includes a housing 1, an active valve core 2, a passive valve core 3, a ball-and-socket joint 4, a pressure sensing device 5 and a driving device 6.
The inside of casing 1 is provided with high pressure chamber 11 and low pressure chamber 12, and high pressure chamber 11 and low pressure chamber 12 intercommunication, and the surface of casing 1 is provided with high-pressure gas inlet 13 and low-pressure gas outlet 14 with high pressure chamber 11 and low pressure chamber 12 intercommunication respectively.
One end of the passive spool 3 is provided with a movable seal 31, and the movable seal 31 is used to adjust the degree of communication between the high pressure chamber 11 and the low pressure chamber 12.
In this embodiment, the volume of the high pressure chamber 11 is much larger than the volume of the low pressure chamber 12, the movable sealing member 31 is disposed at the joint of the high pressure chamber 11 and the low pressure chamber 12, and with the fine movement of the movable sealing member 31, the degree of communication between the high pressure chamber 11 and the low pressure chamber 12 changes, so that the air pressure in the low pressure chamber 12 changes, for example, the closer the joint between the movable sealing member 31 and the joint of the high pressure chamber 11 and the low pressure chamber 12 is, the smaller the air pressure in the low pressure chamber 12 is.
One end of the spherical hinge connecting rod 4 is connected with one end of the driving valve core 2 through a first spherical hinge 41, and the other end of the spherical hinge connecting rod 4 is fixedly connected with the other end of the driven valve core 3. Through setting up first ball pivot 41, can make active valve core 2 drive passive valve core 3 and remove, if active valve core 2 vertical movement, active valve core 2 can drive ball pivot connecting rod 4 swivelling movement to drive passive valve core 3 and remove.
As shown in fig. 1 and 5, the pressure sensing device 5 is disposed at the low-pressure gas outlet 14 for detecting the gas pressure in the low-pressure chamber 12, and in the present embodiment, the pressure sensing device 5 is a pressure sensor, and in other embodiments, may be another pressure measuring device.
As shown in fig. 1 and 7, the driving device 6 is disposed on the housing 1 and connected to the other end of the active valve element 2 through the housing 1, and the driving device 6 is configured to control the active valve element 2 to move according to the air pressure in the low pressure chamber 12 detected by the pressure sensing device 5, so that the passive valve element 3 drives the movable sealing member 31 to move, and the air pressure in the low pressure chamber 12 changes.
By arranging the active valve core 2 and the passive valve core 3, the active valve core 2 is connected with the passive valve core 3 through the spherical hinge connecting rod 4, the active valve core 2 is connected with the driving device 6, the passive valve core 3 is connected with the movable sealing part 31 for adjusting the communication degree of the high-pressure cavity 11 and the low-pressure cavity 12, so that when the air pressure in the low-pressure cavity 12 does not meet the preset standard, the active valve core 2 can be controlled to move through the driving device 6, the passive valve core 3 and the movable sealing part 31 are driven to adjust, the communication degree of the high-pressure cavity 11 and the low-pressure cavity 12 is changed, the air pressure in the low-pressure cavity 12 is adjusted accordingly, and the control effect of the pressure reducing valve is achieved Control is more accurate, can eliminate the influence of pressure fluctuation for the decompression effect of relief pressure valve is better.
Example 2
In an embodiment of the present invention, as shown in fig. 1 and 3, in addition to embodiment 1, a guide sleeve 15 communicating with the high pressure chamber 11 is provided on the housing 1, the active valve element 2 moves along the guide sleeve 15, and the driving device 6 is provided outside the guide sleeve 15.
Through setting up uide bushing 15, can make the initiative case 2 remove along uide bushing 15 to the removal of the initiative case 2 is led, avoids the initiative case 2 side to move, makes the control deviation appear.
Preferably, the guide sleeve 15 is closed on the outside, and the driving device 6 is an electromagnetic driving device and drives the active valve core 2 to move along the guide sleeve 15.
By arranging the guide sleeve 15 to be closed and arranging the driving device 6 to be an electromagnetic driving device, the driving valve core 2 can be driven to move by the electromagnetism generated by the electromagnetic driving device, so that the sealing of the device is realized, and the gas leakage is avoided.
Example 3
In one embodiment of the present invention, as shown in fig. 1, 2 and 6, on the basis of any of the above embodiments, the active valve core 2 and the passive valve core 3 are both vertically arranged, and the ball joint connecting rod 4 is obliquely arranged downwards.
Through with the vertical setting of active valve core 2 and passive valve core 3, the slope of ball pivot connecting rod 4 sets up downwards, can be convenient for carry out the calculation of active valve core 2 adjustment process according to the length, the position etc. of active valve core 2, passive valve core 3, ball pivot connecting rod 4.
Preferably, the ball joint connecting rod 4 comprises a first arm and a second arm, the first ball joint 41 is arranged at the top end of the first arm, the passive valve core 3 is connected at the joint of the first arm and the second arm, the sliding pair 16 is arranged on the side surface of the high pressure cavity 11, and the bottom end of the second arm is movably connected with the sliding pair 16 through a second ball joint 42.
The spherical hinge connecting rod 4 comprises a first arm and a second arm, a first spherical hinge 41 is arranged at the top end of the first arm, the driven valve core 3 is connected at the joint of the first arm and the second arm, a sliding pair 16 is arranged on the side surface of the high-pressure cavity 11, and the bottom end of the second arm is movably connected with the sliding pair 16 through a second spherical hinge 42, so that when the driving valve core 2 moves up and down, the second spherical hinge 42 can slide in the sliding pair 16 and drive the driven valve core 3 to move, and therefore the movable sealing part 31 at the bottom end of the driven valve core 3 changes the communication degree of the high-pressure cavity 11 and the low-pressure cavity 12.
Further preferably, the length of the first arm is greater than the length of the second arm.
The length of the first arm is set to be larger than that of the second arm and is far larger than that of the second arm, so that large displacement fluctuation on the active valve core 2 can be converted into small displacement fluctuation and large axial force of the passive valve core 3, and accurate regulation and control of pressure and flow under the condition of large pressure difference at the front end and the rear end of the pressure reducing valve are achieved.
Example 4
In one embodiment of the present invention, as shown in fig. 1 and 4, a relief valve 17 communicating with the low pressure chamber 12 is provided on a surface of the housing 1 in addition to any of the above embodiments.
Through setting up relief valve 17, can carry out quick adjustment to the atmospheric pressure in the low pressure chamber 12, the adjustment of the atmospheric pressure in the low pressure chamber 12 of the combination of active case 2, passive case 3 again can make the atmospheric pressure adjustment of relief valve more nimble convenient.
Preferably, the movable sealing member 31 has a spherical shape, and a groove matching the spherical movable sealing member 31 is provided at a junction of the high pressure chamber 11 and the low pressure chamber 12.
Through setting up movable sealing member 31 to spherical, and the junction of high pressure chamber 11 and low pressure chamber 12 be provided with be the recess that spherical movable sealing member 31 matches for the adjustment to the intercommunication degree of high pressure chamber 11 and low pressure chamber 12 is more steady, accurate, avoids the adjustment range too big.
Example 5
In an embodiment of the present invention, as shown in fig. 8, the present invention further provides a regulating method for the lever type pressure reducing valve, including the steps of:
and S1, acquiring the current air pressure in the low-pressure cavity through the pressure sensing device.
And S2, comparing the current air pressure with a preset air pressure through the controller.
And S3, calculating the process that the active valve element needs to move when the current air pressure reaches the preset air pressure according to the position relation of the active valve element, the passive valve element and the spherical hinge connecting rod.
And S4, controlling the active valve core to move according to the process through the driving device.
The current air pressure in the low-pressure cavity can be obtained in real time through the pressure sensing device, the current air pressure is compared with the actually required preset air pressure, the process that the active valve element needs to move when the current air pressure reaches the preset air pressure can be calculated according to the position relation of the active valve element, the passive valve element and the spherical hinge connecting rod, and finally the air pressure in the low-pressure cavity can reach the preset requirement by controlling the active valve element to move according to the calculated process through the driving device. Through the regulation and control method of this scheme, owing to need not use the spring, but use the lever connecting piece that connects the rigidity better, consequently can not appear passing along with time, the spring rigidity changes, leads to the condition that rises slowly to appear, and because the connecting piece rigidity of lever is better, control is more accurate, can eliminate the influence of pressure oscillation for the decompression effect of relief pressure valve is better.
Example 6
As shown in fig. 9, an embodiment of the present invention, on the basis of embodiment 5, after step S4, further includes the steps of:
and S5, feeding back the change result of the current air pressure after the active valve core moves.
And S6, adjusting the driving of the driving device according to the change result.
When the active valve element is controlled to move according to the calculated process, the change condition of the air pressure in the low-pressure cavity can be monitored in real time, and the change condition is fed back to the driving device, so that the driving device can be adjusted according to the actual condition, and the pressure reduction control of the device is more accurate.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A lever type pressure reducing valve, comprising:
the gas-liquid separator comprises a shell, a gas-liquid separator and a gas-liquid separator, wherein a high-pressure cavity and a low-pressure cavity are arranged inside the shell and are communicated with each other, and a high-pressure gas inlet and a low-pressure gas outlet which are respectively communicated with the high-pressure cavity and the low-pressure cavity are formed in the surface of the shell;
a main valve core;
one end of the passive valve core is provided with a movable sealing element, and the movable sealing element is used for adjusting the communication degree of the high-pressure cavity and the low-pressure cavity;
one end of the spherical hinge connecting rod is connected with one end of the active valve core through a first spherical hinge, and the other end of the spherical hinge connecting rod is fixedly connected with the other end of the passive valve core;
the pressure sensing device is arranged at the low-pressure gas outlet and used for detecting the gas pressure in the low-pressure cavity;
the driving device is arranged on the shell and penetrates through the shell to be connected with the other end of the active valve core, and the driving device is used for controlling the active valve core to move according to the air pressure in the low-pressure cavity detected by the pressure sensing device, so that the passive valve core drives the movable sealing element to move, and the air pressure in the low-pressure cavity is changed.
2. A lever type pressure reducing valve as claimed in claim 1, wherein: the shell is provided with a guide sleeve communicated with the high-pressure cavity, the active valve core moves along the guide sleeve,
the driving device is arranged outside the guide sleeve.
3. A lever type pressure reducing valve as claimed in claim 2, wherein: the outside of the guide sleeve is closed,
the driving device is an electromagnetic driving device and drives the driving valve core to move along the guide sleeve.
4. A lever type pressure reducing valve as claimed in claim 1, wherein: the active valve core and the passive valve core are both vertically arranged, and the spherical hinge connecting rod is obliquely and downwards arranged.
5. A lever type pressure reducing valve as claimed in claim 4, wherein: the ball joint connecting rod comprises a first arm and a second arm, the first ball joint is arranged at the top end of the first arm, the passive valve core is connected at the joint of the first arm and the second arm,
the side of the high-pressure cavity is provided with a sliding pair, and the bottom end of the second arm is movably connected with the sliding pair through a second spherical hinge.
6. A lever type pressure reducing valve as claimed in claim 5, wherein: the length of the first arm is greater than the length of the second arm.
7. A lever type pressure reducing valve as claimed in claim 1, wherein: and a pressure relief valve communicated with the low-pressure cavity is arranged on the surface of the shell.
8. A lever type pressure reducing valve as claimed in claim 1, wherein: the movable sealing element is spherical, and a groove matched with the spherical movable sealing element is arranged at the joint of the high-pressure cavity and the low-pressure cavity.
9. A method of regulating a lever type pressure reducing valve as claimed in any one of claims 1 to 8, comprising the steps of:
acquiring the current air pressure in the low-pressure cavity through a pressure sensing device;
comparing the current air pressure with a preset air pressure through a controller;
calculating the process that the active valve element needs to move when the current air pressure reaches the preset air pressure according to the position relation of the active valve element, the passive valve element and the spherical hinge connecting rod;
and controlling the active valve core to move according to the process through a driving device.
10. A method as claimed in claim 9, wherein the step of moving the active valve spool by the driving means in accordance with the progress further comprises the steps of:
feeding back a change result of the current air pressure after the active valve core moves;
and adjusting the driving of the driving device according to the change result.
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| CN202011057334.4A CN112081973B (en) | 2020-09-30 | 2020-09-30 | Lever type pressure reducing valve and regulating and controlling method thereof |
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| CN202011057334.4A CN112081973B (en) | 2020-09-30 | 2020-09-30 | Lever type pressure reducing valve and regulating and controlling method thereof |
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| CN112081973B CN112081973B (en) | 2022-06-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112635795A (en) * | 2020-12-21 | 2021-04-09 | 东风汽车集团有限公司 | Fuel cell air pressure adjusting device and system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1261807A (en) * | 1968-04-22 | 1972-01-26 | Gurtner Sa | Pressure reducing valve unit |
| CN1118852A (en) * | 1994-05-08 | 1996-03-20 | 杨玉思 | Proportional-controllable pressure reducing valve and fire hydrant |
| CN2777313Y (en) * | 2005-03-03 | 2006-05-03 | 麦广海 | Sealed special pressure-reducing valve for water heater |
| US20080257418A1 (en) * | 2007-04-20 | 2008-10-23 | Fisher Controls International Llc | Pressure Averaging Sense Tube For Gas Regulator |
| CN203571146U (en) * | 2013-11-27 | 2014-04-30 | 厦门市凯讯科技有限公司 | Gas pressure reducer |
| CN203656300U (en) * | 2013-11-29 | 2014-06-18 | 北汽福田汽车股份有限公司 | Pressure reducing valve |
| CN204099076U (en) * | 2014-08-27 | 2015-01-14 | 四川森洁燃气设备有限公司 | Multi-stage pressure reducers is pressed in straight spray |
| CN104595539A (en) * | 2015-01-23 | 2015-05-06 | 四川森洁燃气设备有限公司 | Fuel gas pressure reduction mechanism for vehicle |
| CN108343766A (en) * | 2018-01-22 | 2018-07-31 | 北京东方通捷燃气有限责任公司 | A kind of gas pressure-reducing valve |
-
2020
- 2020-09-30 CN CN202011057334.4A patent/CN112081973B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1261807A (en) * | 1968-04-22 | 1972-01-26 | Gurtner Sa | Pressure reducing valve unit |
| CN1118852A (en) * | 1994-05-08 | 1996-03-20 | 杨玉思 | Proportional-controllable pressure reducing valve and fire hydrant |
| CN2777313Y (en) * | 2005-03-03 | 2006-05-03 | 麦广海 | Sealed special pressure-reducing valve for water heater |
| US20080257418A1 (en) * | 2007-04-20 | 2008-10-23 | Fisher Controls International Llc | Pressure Averaging Sense Tube For Gas Regulator |
| CN203571146U (en) * | 2013-11-27 | 2014-04-30 | 厦门市凯讯科技有限公司 | Gas pressure reducer |
| CN203656300U (en) * | 2013-11-29 | 2014-06-18 | 北汽福田汽车股份有限公司 | Pressure reducing valve |
| CN204099076U (en) * | 2014-08-27 | 2015-01-14 | 四川森洁燃气设备有限公司 | Multi-stage pressure reducers is pressed in straight spray |
| CN104595539A (en) * | 2015-01-23 | 2015-05-06 | 四川森洁燃气设备有限公司 | Fuel gas pressure reduction mechanism for vehicle |
| CN108343766A (en) * | 2018-01-22 | 2018-07-31 | 北京东方通捷燃气有限责任公司 | A kind of gas pressure-reducing valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112635795A (en) * | 2020-12-21 | 2021-04-09 | 东风汽车集团有限公司 | Fuel cell air pressure adjusting device and system |
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| Publication number | Publication date |
|---|---|
| CN112081973B (en) | 2022-06-17 |
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