CN209668754U - A kind of liquid feed device - Google Patents
A kind of liquid feed device Download PDFInfo
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- CN209668754U CN209668754U CN201920258279.1U CN201920258279U CN209668754U CN 209668754 U CN209668754 U CN 209668754U CN 201920258279 U CN201920258279 U CN 201920258279U CN 209668754 U CN209668754 U CN 209668754U
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- storage tank
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Abstract
The utility model relates to a kind of liquid feed devices, comprising: storage tank, pressurizing device, first pressure meter and controller；The storage tank, for storing liquid, storage tank is equipped with air inlet, gas outlet and the liquid in-out mouth for liquid disengaging, gas outlet is connected to by the first valve with ambient atmosphere, air inlet is connected to by the second valve with pressurizing device, and liquid in-out mouth is connected to inlet tube, outlet tube respectively by third valve；First pressure meter is used to obtain the pressure value of the liquid in outlet tube exit, and is sent to controller；Controller regulates and controls the aperture of the second valve according to pressure value, and the pressure in outlet tube exit is made to maintain to stablize.The utility model has the following beneficial effects: reducing the waste of oil return control mode, mentioning high control precision, while oil return control and cooling required equipment are reduced, reduces the cost of device.
Description
Technical field
The utility model belongs to technical field of hydraulic, and in particular to a kind of liquid feed device.
Background technique
Currently, the systems such as fuel oil, high-pressure cooling water, hydraulic mostly use, circuit carries out flow and pressure is adjusted.Reference
Shown in Fig. 1, which must include variable frequency pump 107, oil return regulating valve 108, fuel control valve 1012, pressure gauge 1010, flow
Meter 1013, return oil cooling device 105, damping tank 1011 etc..
For general range of flow 1-1000kg/h, ± 0.5% will be reached by controlling precision.In 1,000 times of range of flows, one
As require at least configure 3-4 platform variable frequency pump 107.Because revolving speed and flow and pressure are at positive relationship, variable-frequency motor cannot work
Under lower-speed state.The working range of every pump must have 10 times or so, so before often thering is 90% flow to need to be recycled back to pump,
According to law of conservation of energy, this electrical power can be converted into heat, oil temperature is caused to increase.In order to protect oil pump and pipeline, it is necessary to
It is cooling to carry out oil return, this needs additional return oil cooling device 105, and further loss oil pressure, causes a large amount of energy dissipation.
For oil return and for the oil return regulating valve 108 and fuel control valve 1012 of vent line, adjustable range can be at 10 times
Left and right is relatively advanced at last, is nonetheless equally also required to the 2-3 in parallel adjustable ranges to cover hundred times.
When carrying out PID adjusting, it is also difficult to it realizes and quickly adjusts, the fluctuation that frequent overshoot causes pressure big.
Utility model content
In order to solve the problems, such as it is of the existing technology structure is complicated and low efficiency, the utility model provides a kind of feed flow
Device has the characteristics that structure is simple, control precision is high, cost is lower.
A kind of the purpose of the utility model is to provide control precision higher, the lower fueller of the simple cost of structure.
A kind of a kind of liquid feed device of liquid feed device of specific embodiment according to the present utility model, which is characterized in that packet
It includes: storage tank, pressurizing device, first pressure meter and controller；
The storage tank, for storing liquid, the storage tank be equipped with air inlet, gas outlet and for liquid disengaging into
Liquid outlet, the gas outlet are connected to by the first valve with ambient atmosphere, and the air inlet passes through the second valve and the pressurization
Device connection, the liquid in-out mouth are connected to inlet tube, outlet tube respectively by third valve；
The first pressure meter is used to obtain the pressure value of the liquid in the outlet tube exit, and is sent to the control
Device；
The controller regulates and controls the aperture of second valve according to the pressure value, makes the liquid in the outlet tube exit
Body pressure maintains to stablize.
Further, the liquid feed device further include: second pressure meter, the second pressure meter and the storage tank connect
It is logical, it is sent for obtaining the pressure inside the storage tank close to second valve, and to the controller；
The controller is also used to receive the pressure of second valve, and according to the pressure of second valve to described
The aperture of second valve is adjusted, and the pressure for supplying pressure in the storage tank and the pressurizing device is identical.
Further, the liquid feed device further include: check valve, the liquid that the inlet tube is arranged in the check valve connect
Enter end, prevents the liquid after opening the third valve from flowing backwards.
Further, the liquid feed device further include: the 4th valve, the 4th valve setting are exported in the outlet tube
Place, the inlet tube are connected to the outlet tube.
Further, the pressurizing device includes: force (forcing) pump and nitrogen gas tank, and the force (forcing) pump and the controller are electrically connected
It connects, the force (forcing) pump injects inside the storage tank after the nitrogen in the nitrogen gas tank pressurizes through second valve；
The controller is also used to control force (forcing) pump and is pressurized to setting value to the nitrogen in the nitrogen gas tank.
Further, the liquid feed device further include: the liquid access of the inlet tube is arranged in water pump, the water pump
End, the water pump and controller electrical connection；
The controller is also used to control water pump and pressurizes to the liquid for providing hydraulic fluid side access, infuses liquid smoothly
Enter in the storage tank.
Further, the liquid feed device further include: liquid-level switch, the liquid-level switch are arranged on the storage tank,
Liquid level inside the storage tank is monitored, and sends a signal to the controller, the controller controls the water pump
Start and stop.
Further, the liquid feed device further include: flowmeter, the flowmeter is for obtaining the outlet tube exit
Liquid flow magnitude, and the flow value that will acquire is sent to the controller, so that the controller controls second valve
Aperture the pressure in the storage tank is adjusted.
Further, first valve and the third valve use Rexroth-4WE6J solenoid valve；Second valve
Door uses Rexroth-2FRM6B36 flow control speed governing valve.
Further, the first pressure meter uses WikaA-10 pressure transmitter, and the check valve uses
RexrothMK-10 check valve.
The utility model has the following beneficial effects: pressure control is easier, the pressure of 10Mpa because of the compressibility of gas
Power can control within 1kpa, for the valve and nozzle of uniform section product, controls pressure and also just controls flow, can save
Go multiple regulating valves in circuit；Because need to only control intake valve, so that it may the adjusting of pressure is carried out, so being not in oil return adjustment
There are coupled oscillations caused by interactional valve cascade coupling in valve and delivery valve；Reduce the wave of oil return control mode
Take, mention high control precision, while reducing oil return control and cooling required equipment, reduces the cost of device.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of common flow control circuit in the prior art；
Fig. 2 is the structural schematic diagram of the liquid feed device provided according to an exemplary embodiment.
Appended drawing reference
101- fuel tank；102- temperature sensor；103- oily filter；104- pressure difference switch；105- return oil cooling device； 106-
Control switch valve；107- variable frequency pump；108- oil return regulating valve；109- check-valves；1010- pressure gauge；1011- damps tank；
1012- fuel control valve；1013- flowmeter；201- water pump；The first valve of 202-；203- storage tank；204- third valve；
The second valve of 205-；206- controller；207- second pressure meter；208- first pressure meter；The 4th valve of 209-；2010- is unidirectional
Valve.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below by the technology to the utility model
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
Referring to shown in Fig. 2, the embodiments of the present invention provide a kind of liquid feed device, comprising: storage tank 203, pressurization
Device (not shown), first pressure meter 208 and controller 206；
Storage tank 203 is equipped with air inlet, gas outlet and the disengaging for liquid disengaging for storing liquid, storage tank 203
Liquid mouth, gas outlet are connected to by the first valve 202 with ambient atmosphere, and air inlet is connected to by the second valve 205 with pressurizing device,
Liquid in-out mouth is connected to inlet tube, outlet tube respectively by third valve 204；
First pressure meter 208 is used to obtain the pressure value of the liquid in outlet tube exit, and is sent to controller 206；
Controller 206 regulates and controls the aperture of the second valve 205 according to pressure value, and the pressure in outlet tube exit is made to remain steady
It is fixed.
In a specific embodiment of the utility model, it is first turned on the first valve 202, closing the second valve 205 makes to deposit
After air pressure and external atmosphere pressure balance in storage tank 203, the first valve 202 is closed, third valve 204 is opened, makes extraneous feed flow
The liquid of device enters in storage tank 203, stops injection liquid after the liquid in storage tank 203 reaches a certain level, and close
Third valve 204 is closed, opening the second valve 205 is that pressurization in storage tank 203 (can be needed according to flowline in actual use
The pressure of liquid is pressurizeed), it is to be added be pressed onto setting value after, open third valve 204 and carry out fuel feeding, and to flowline exit
Pressure be monitored using first pressure meter 208, controller 206 is according to the pressure value of feedback to the aperture of the second valve 205
Control is carried out to make the pressure remained steady of liquid, such as increase by the second valve 205 when outlet pressure is lower than setting value
Aperture, aperture that is on the contrary then reducing the second valve 205.
Particularly with the liquid control model for needing small flow, it can effectively reduce the waste of oil return control mode, mention
In high precision, while oil return control and cooling required equipment are reduced, to reduce the cost of manufacture；Because gas is compressible
Property, pressure control is easier to realize, for the valve and nozzle of uniform section product, controls pressure and also just controls flow, just
The regulating valve in oil circuit can be saved；Only intake valve, which need to be controlled, can carry out the control of pressure so not appearing in oil return regulating valve
There are problems that interactional valve cascade coupling with fuel-displaced regulating valve.
It should be noted that inlet tube and outlet tube can be same pipeline, the other end is blocked when need to only work at one end, the
For the access of three valves 204 in the middle position of pipeline, same pipeline can be realized can also be used as outlet tube as inlet tube
It uses.
In a specific embodiment of the utility model, pressurizing device can be a kind of pressurization being commonly used in the prior art
Device, comprising: force (forcing) pump and nitrogen gas tank, force (forcing) pump and controller 206 are electrically connected, after force (forcing) pump pressurizes the nitrogen in nitrogen gas tank
Through pressurizeing inside the second valve 205 injection storage tank 203, it is being pressurized to specified value, controller 206 is controllable to be stopped adding
Pressure, realizes the automatic control of pressurization.
To advanced optimize the technical solution, it is arranged on storage tank the 203rd in a specific embodiment of the utility model
There is second pressure meter 207, second pressure meter 207 is connected to storage tank 203, for obtaining 203 inside of storage tank close to the second valve
The pressure of door 205.Controller 206 can control pressurizing device according to the pressure information in storage tank 203 and work in this way.
As a kind of feasible implementation, prestige card A-10 pressure is can be used in first pressure meter 208 and second pressure meter 207
The feedback of power transmitter progress pressure；Second pressure meter 207 can be used simple manometer ancillary staff and observe.
In some specific embodiments of the utility model, further includes: check valve 2010, check valve 2010 setting into
The liquid incoming end of liquid pipe prevents the liquid after opening third valve 204 from flowing backwards；4th valve 209, the setting of the 4th valve 209
In outlet tube exit, inlet tube is connected to outlet tube.
It is realized by check valve 2010 and the 4th valve 209 and carries out liquid for preventing at once after the opening of third valve 204
Liquid reflux.
In a specific embodiment of the utility model, further includes: the liquid of inlet tube is arranged in water pump 201, water pump 201
Incoming end, water pump 201 and controller 206 are electrically connected；Liquid-level switch (not shown), liquid-level switch are arranged in storage tank 203
On, the liquid level inside storage tank 203 is monitored, and send a signal to controller 206, controller 206 controls opening for water pump
Stop.
It is cooperated and is realized by water pump 201 and liquid-level switch, to the liquid supplying apparatus of not pressure, pass through water pump
201 realizations are pumped into inside storage tank 203, and are realized under the induction of liquid-level switch and be automatically stopped liquid supply.
In a specific embodiment of the utility model, further includes: flowmeter, flowmeter is for obtaining outlet tube exit
Liquid flow magnitude, and the flow value that will acquire is sent to controller 206.
It can be by the way that the flow value of the liquid of pipeline exit be fed back to the control that controller 206 carries out fluid flow.
In some specific embodiments of the utility model, the first valve 202 and third valve 204 be can be used
Rexroth-2FRM6B36 flow control speed governing valve can be used in Rexroth-4WE6J (Rexroth) valve, the second valve 205, the
Four valves 209 use common valve；Check valve 2010 uses Rexroth-MK-10 Rexroth check valve.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with the power
Subject to the protection scope that benefit requires.
Claims (10)
1. a kind of liquid feed device characterized by comprising storage tank, pressurizing device, first pressure meter and controller；
The storage tank, for storing liquid, the storage tank is equipped with air inlet, gas outlet and the liquid in-out for liquid disengaging
Mouthful, the gas outlet is connected to by the first valve with ambient atmosphere, and the air inlet passes through the second valve and the pressurizing device
Connection, the liquid in-out mouth are connected to inlet tube, outlet tube respectively by third valve；
The first pressure meter is used to obtain the pressure value of the liquid in the outlet tube exit, and is sent to the controller；
The controller regulates and controls the aperture of second valve according to the pressure value, makes the liquid pressure in the outlet tube exit
Power maintains to stablize.
2. the apparatus according to claim 1, which is characterized in that further include: second pressure meter, the second pressure meter and institute
Storage tank connection is stated, is sent for obtaining the pressure inside the storage tank close to second valve, and to the controller；
The controller is also used to receive the pressure of second valve, and according to the pressure of second valve to described second
The aperture of valve is adjusted, and the pressure for supplying pressure in the storage tank and the pressurizing device is identical.
3. the apparatus according to claim 1, which is characterized in that further include: check valve, check valve setting it is described into
The liquid incoming end of liquid pipe prevents the liquid after opening the third valve from flowing backwards.
4. device according to claim 3, which is characterized in that further include: the 4th valve, the 4th valve are arranged in institute
Outlet tube exit is stated, the inlet tube is connected to the outlet tube.
5. the apparatus of claim 2, which is characterized in that the pressurizing device includes: force (forcing) pump and nitrogen gas tank, described
Force (forcing) pump and controller electrical connection, the force (forcing) pump are infused after the nitrogen in the nitrogen gas tank pressurizes through second valve
Enter inside the storage tank；
The controller is also used to control force (forcing) pump and is pressurized to setting value to the nitrogen in the nitrogen gas tank.
6. device according to claim 3, which is characterized in that further include: water pump, the water pump are arranged in the inlet tube
Liquid incoming end, the water pump and the controller electrical connection；
The controller is also used to control water pump and pressurizes to the liquid for providing hydraulic fluid side access, liquid is made smoothly to inject institute
It states in storage tank.
7. device according to claim 6, which is characterized in that further include: liquid-level switch, the liquid-level switch are arranged in institute
It states on storage tank, the liquid level inside the storage tank is monitored, and send a signal to the controller, the controller control
Make the start and stop of the water pump.
8. device according to any one of claims 1 to 7, which is characterized in that further include: flowmeter, the flowmeter are used
In the liquid flow magnitude for obtaining the outlet tube exit, and the flow value that will acquire is sent to the controller, so as to described
The aperture that controller controls second valve is adjusted the pressure in the storage tank.
9. the apparatus according to claim 1, which is characterized in that first valve and the third valve use
Rexroth-4WE6J solenoid valve；Second valve uses Rexroth-2FRM6B36 flow control speed governing valve.
10. device according to claim 3, which is characterized in that the first pressure meter uses Wika A-10 pressure inverting
Device, the check valve use RexrothMK-10 check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920258279.1U CN209668754U (en) | 2019-02-28 | 2019-02-28 | A kind of liquid feed device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920258279.1U CN209668754U (en) | 2019-02-28 | 2019-02-28 | A kind of liquid feed device |
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| Publication Number | Publication Date |
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| CN209668754U true CN209668754U (en) | 2019-11-22 |
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| CN201920258279.1U Active CN209668754U (en) | 2019-02-28 | 2019-02-28 | A kind of liquid feed device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109748231A (en) * | 2019-02-28 | 2019-05-14 | 杨哲 | A kind of liquid feed device and method |
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2019
- 2019-02-28 CN CN201920258279.1U patent/CN209668754U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109748231A (en) * | 2019-02-28 | 2019-05-14 | 杨哲 | A kind of liquid feed device and method |
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