CN102424352B - Self-sealing variable-frequency oil gun and control method thereof - Google Patents
Self-sealing variable-frequency oil gun and control method thereof Download PDFInfo
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- CN102424352B CN102424352B CN 201110235540 CN201110235540A CN102424352B CN 102424352 B CN102424352 B CN 102424352B CN 201110235540 CN201110235540 CN 201110235540 CN 201110235540 A CN201110235540 A CN 201110235540A CN 102424352 B CN102424352 B CN 102424352B
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- 238000007789 sealing Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000012528 membrane Substances 0.000 claims abstract description 20
- 239000000446 fuel Substances 0.000 claims description 31
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005086 pumping Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 230000008859 change Effects 0.000 description 5
- 230000009191 jumping Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 210000005239 tubule Anatomy 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Abstract
The invention discloses a self-sealing variable-frequency oil gun, which comprises an oil inlet and a self-sealing structure, wherein the self-sealing structure comprises a gating membrane; a self-sealing top cover is arranged above the self-sealing structure; a volume pump in an oiling machine hydraulic system is connected with the oil inlet of the oil gun; and an oiling machine variable-frequency control device in the oiling machine hydraulic system, a frequency converter, an oil pumping motor and the volume pump are connected in sequence. The self-sealing variable-frequency oil gun is characterized in that: the oil gun is provided with a control signal input device; the control signal input device is electrically connected with the oiling machine variable-frequency control device; a limiting switch is arranged from the self-sealing top cover to the inside of the oil gun; the top of the limiting switch is positioned on the self-sealing top cover; the bottom of the limiting switch is pressed against the top of the gating membrane; and the limiting switch is electrically connected with the variable-frequency control device. A control method of the oil gun comprises the following steps of: controlling the magnitude of the oil output of the oil gun through an input signal; and judging whether the self-sealing structure is in self-sealing state to control whether to stop the oil pumping motor. The oil gun has a good energy-saving effect and high safety performance.
Description
Technical field
The present invention relates to a kind of nozzle and control method thereof, more particularly, relate to a kind of self-sealing frequency conversion nozzle and control method thereof.
Background technology
The used conventional nozzle of common fuel charger mainly is the nozzle of self-sealing, and its keystone configuration is made up of main valve, secondary valve and self-styled structure.Mainly be made up of switch membrane, self-styled bar, automatic control bar, steel ball etc. from seal structure, the switch membrane top is provided with self-styled top cover.The top of automatic control bar has three steel balls that the position of automatic control bar is locked, must not arbitrarily move.There is the self-styled bar of a taper centre of three steel balls, and during non-refuelling, self-styled bar struts three steel balls and makes the locked automatic control bar of steel ball.Captive joint with switch membrane in the top of self-styled bar, the switch membrane below is communicated with atmosphere by the oil gun outlet.The circular clearance communicated around the switch membrane superjacent air space had pipeline and valve core of auxiliary valve, and this circular clearance is connected with the small pipeline that leads to the oil gun outlet, be positioned at the oil gun oil outlet pipe again, communicates with atmosphere.And the principle of work of self-sealing nozzle is such: when mentioning the nozzle switch handle, main valve is opened under the push rod effect, high-voltage oil liquid is from the oil inlet main valve of flowing through, enter the cavity below the main valve, push secondary valve then open, flow out beginning to being subjected to the oil vessel fuel feeding from oil outlet, and place, the circular clearance around valve core of auxiliary valve forms negative pressure.Because open to atmosphere tubule communicates in this circular clearance and the gun barrel, can suck air with the maintenance bar pressure, and then make switch membrane upper and lower equilibrium of pressure, oiling can normally be carried out.After fluid liquid level in being subjected to oil vessel floods gun barrel exit end and the interior tubule mouth of pipe thereof, because air can't enter circular clearance and switch membrane top, so that the pressure at two places reduces rapidly, and switch membrane below pressure is higher than top pressure, switch membrane can't keep balance and on move.Drive on the self-styled bar when moving on the switch membrane and move, make three steel balls at self-styled bar cone position progressively to central motion so that lose locking effect to the automatic control bar.The automatic control bar ejects under action of the spring, and this moment, the switch handle fulcrum moved down, the switch handle tripping, and main valve is along with closing, and oiling stops, and oil gun is realized self-styled.
By the principle of work of self-sealing nozzle as can be known, the self-sealing nozzle mainly contains two functions, and the one, by regulating the control that the main valve aperture realizes the flow size; The 2nd, the form of turn-offing with machinery realizes the self-styled of oil gun.The function of self-sealing nozzle is comparative maturity for common fuel charger, but the drawback of conventional self-sealing oil gun appeared to come out under the background of energy scarcity day by day, is mainly reflected in:
1, conventional self-sealing nozzle is controlled the oiling flow by regulating the main valve aperture, when required flow is greatly then transferred big main valve aperture, required flow is little then correspondingly turns the main valve aperture down, and motor remains full speed running, and this drive manner must cause the waste of energy.
2, oil gun self-styled after, the motor of fuel charger still is in the state of full speed running, the flow that comes in pumping this moment all flows back to oil tank by by pass valve, not only caused the lot of energy waste, also make internal system pressure very big, all extremely unfavorable to stability and the safety of whole hydraulic efficiency pressure system.
In order to reach the purpose of energy efficient, the inventor takes the lead in having proposed a kind of frequency conversion oiling pattern, adopting the variable frequency control pattern in oiling machine hydraulic system, mainly is to utilize fuel charger frequency-converting control device and frequency converter that the oily motor of the pump of nozzle is carried out variable frequency control.But this pattern is applied on the existing self-sealing nozzle, also must carry out multinomial improvement and could utilize existing mature technology better and reach purpose energy-conservation, the raising safety.
Summary of the invention
The object of the present invention is to provide a kind of self-sealing frequency conversion nozzle and control method thereof.This nozzle can be regulated the oiling flow by the direct control pump oil of the input media on oil gun motor speed, thereby has reduced the resistance of oil gun pipeline, has reduced energy consumption; This nozzle also realizes that from seal structure motor turn-offs in conjunction with oil gun simultaneously, and is energy-conservation and improve the safety performance of hydraulic efficiency pressure system.
In order to achieve the above object, the present invention is achieved by following technical proposals: a kind of self-sealing frequency conversion nozzle comprises oil inlet and from seal structure; Describedly comprise switch membrane from seal structure, self-styled superstructure is provided with self-styled top cover; Positive displacement pump in the oiling machine hydraulic system is connected with the oil inlet of nozzle, and the fuel charger frequency-converting control device in the oiling machine hydraulic system, frequency converter, pump oil motor are connected successively with positive displacement pump; It is characterized in that: described nozzle is provided with the control signal input media; Described control signal input media is electrically connected with the fuel charger frequency-converting control device; The inner limit switch of installing from described self-styled top cover to nozzle, the top of described limit switch is positioned on the self-styled top cover, and the bottom of described limit switch and the top of switch membrane offset; Described limit switch is electrically connected with the fuel charger frequency-converting control device.
More particularly, described control signal input media refers to big gear switch, middle gear switch, little gear switch and four button switches of halt switch; Described big gear switch, middle gear switch, little gear switch and halt switch are electrically connected with the fuel charger frequency-converting control device respectively.
Preferred version is that described control signal input media is arranged on the pikestaff of nozzle.So neither influence is refueled, and is convenient to the oiling personnel again and controls.
The control method of above-mentioned self-sealing frequency conversion nozzle is characterized in that: thus come the operating frequency of control pump oil motor to control the size of nozzle oil pump capacity by incoming signal; Simultaneously by judging that whether being in self-styled state from seal structure comes control pump oil motor whether out of service.
More particularly, describedly come the operating frequency of control pump oil motor by incoming signal, may further comprise the steps:
The first step is selected corresponding key switch in the control signal input media according to required oiling flow, and the button switch output signal is sent to the fuel charger frequency-converting control device;
In second step, the fuel charger frequency-converting control device produces control signal according to the signal of button switch input, and the control frequency converter drives pump oil motor by the frequency run of described button switch correspondence.
The frequency of described button switch correspondence refers to that the frequency of the pump oil motor of big gear switch correspondence is that the frequency of the pump oil motor of the frequency 30Hz of the pump oil motor of 40Hz, middle gear switch correspondence, little gear switch correspondence is 20Hz.
Described by judging that whether being in self-styled state from seal structure comes whether out of service referring to of control pump oil motor, when when seal structure is in self-styled state, control pump oil motor is out of service.
On the basis of frequency conversion fuel charger, the present invention is work like this: when mentioning oil gun, the pump oil motor that refuels does not change.When beginning to refuel, open the nozzle switch handle, open main valve by push rod, different is to need much flows regardless of oil gun this moment, and main valve is all opened fully, and does not need to regulate the main valve aperture according to flow.After the main valve open, press corresponding key switch on the nozzle according to required flow, be big shelves flow (such as 38L/min) as required flow, then press big gear switch, signal of fuel charger frequency-converting control device output is given frequency converter, allow that set in advance, corresponding with big gear switch frequency (as 40Hz) of frequency converter output go driving pump oil motor to rotate, thereby pump out required oiling flow.Need to change the oiling flow midway if refuel, then equally according to required flow, press corresponding button switch, make pump oil motor with corresponding frequency run, remove to drive oil pump and pump out required flow.Refuel and be divided into two kinds of situations when finishing: 1) under the quantitative refueling situation, refuel when finishing, the control mainboard in the fuel charger hydraulic control system sends shutdown signal and gives frequency-variable controller, and this moment, pump oil motor stopped operating, so need not to press any switch key.2) under the non-quantitation oiling situation, refuel when finishing, the self-styled jumping rifle of nozzle, the limit switch of installing at nozzle has just worked: during oiling, the oil gun switch handle is raised, and limit switch remains under the normally open; When jumping rifle, because switch handle unclamps and gets back to original position, limit switch be closure state under the effect of push rod, and it is self-styled to be judged to be oil gun, and limit switch sends signal to fuel charger frequency-converting control device and frequency converter, allows the Frequency Converter Control motor stop operating.
Compared with prior art, the present invention has following advantage and beneficial effect:
1, thereby self-sealing frequency conversion oil gun of the present invention comes control pump oil motor speed to regulate the oiling flow by incoming signal, makes flow regulating no longer rely on the aperture of main valve to control.Design makes when refueling no matter need great flow like this, and main valve can all be opened, thereby has significantly reduced the resistance of oil gun pipeline, has reduced energy consumption.The more important thing is and realized the real-time control of nozzle to pump oil motor speed, pump oil motor speed and required flow are complementary, improved the pumping efficiency of fuel charger greatly.
2, self-sealing frequency conversion oil gun utilizes limit switch to realize that from seal structure pump oil motor turn-offs in conjunction with nozzle, has significantly reduced non-quantitation like this and has refueled fluid impulse force when finishing, prevents from refueling the leaking of unnecessary fluid when finishing, and has guaranteed the oiling precision.Under this structure, can reduce the intensity of main spool spring, reduce difficulty of processing and the performance requriements thereof of main spool spring simultaneously, and also reduced the resistance of main valve open, reduced pressure drag in the oil gun, reduced energy consumption.Humanized is because the main valve open resistance reduces, namely mention the needed power of oil gun switch handle and also reduced, then oiling person when refueling with more convenient comfortable.In addition, because nozzle is closed, do not refuel, this moment, in time disable motor also can reduce unnecessary energy waste.
Description of drawings
Fig. 1 is the structural representation of self-sealing frequency conversion nozzle of the present invention;
Fig. 2 is the A portion enlarged drawing of Fig. 1;
Fig. 3 is the connection diagram of self-sealing frequency conversion nozzle of the present invention and oiling machine hydraulic system;
Wherein, the 1st, pikestaff, the 2nd, push rod, the 3rd, oil inlet, the 4th, self-styled top cover, the 5th, steel ball, the 6th, limit switch, the 7th, control signal input media, the 8th, oil outlet, the 9th, switch membrane.
The specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing and the specific embodiment.
Embodiment
The structure of self-sealing frequency conversion nozzle of the present invention comprises oil inlet 1 and as depicted in figs. 1 and 2 from seal structure; The same with the structure of existing self-sealing nozzle from seal structure, also to be formed by switch membrane, self-styled bar, automatic control bar, steel ball etc., the switch membrane top is provided with self-styled top cover 4; Fuel charger frequency-converting control device in the oiling machine hydraulic system, frequency converter, pump oil motor are connected successively with positive displacement pump; Positive displacement pump in the oiling machine hydraulic system is connected with the oil inlet of nozzle 3, is the nozzle fuel feeding.The pikestaff 1 of nozzle is provided with control signal input media 7; Control signal input media 7 comprises big gear switch, middle gear switch, little gear switch and four button switches of halt switch, and big gear switch, middle gear switch, little gear switch and halt switch are electrically connected with the fuel charger frequency-converting control device respectively.The inner limit switch 6 of installing from self-styled top cover 4 to nozzle, the top of limit switch 6 is positioned on the self-styled top cover 4, and the top of the bottom of limit switch 6 and switch membrane 9 offsets, and limit switch 6 is electrically connected with frequency-converting control device.
The control method of above-mentioned self-sealing frequency conversion nozzle is, thereby controls the size of the operating frequency control nozzle oil pump capacity of motor by incoming signal; Simultaneously by judging that whether being in self-styled state from seal structure comes control pump oil motor whether out of service.
As Fig. 3, come the operating frequency of control pump oil motor by incoming signal, concrete steps are:
The first step is selected corresponding key switch in the control signal input media according to required oiling flow, and the button switch output signal is sent to the fuel charger frequency-converting control device;
In second step, the fuel charger frequency-converting control device produces control signal according to the signal of button switch input, and the control frequency converter drives pump oil motor by the frequency run of described button switch correspondence.Wherein, the frequency of the pump of big gear switch correspondence oil motor is that the frequency of the pump oil motor of 40Hz, middle gear switch correspondence is that the frequency of the pump oil motor of 30Hz, little gear switch correspondence is 20Hz.
By judging that whether being in self-styled state from seal structure comes whether out of service referring to of control pump oil motor, when when seal structure is in self-styled state, control pump oil motor is out of service.
On the basis of frequency conversion fuel charger, the present invention is work like this: when mentioning oil gun, the pump oil motor that refuels does not change.When beginning to refuel, open the nozzle switch handle, open main valve by push rod, different is to need much flows regardless of oil gun this moment, and main valve is all opened fully, and does not need to regulate the main valve aperture according to flow.After the main valve open, press corresponding key switch on the nozzle according to required flow, be big shelves flow (such as 38L/min) as required flow, then press big gear switch, signal of fuel charger frequency-converting control device output is given frequency converter, allow that set in advance, corresponding with big gear switch frequency (as 40Hz) of frequency converter output go driving pump oil motor to rotate, thereby pump out required oiling flow.Need to change the oiling flow midway if refuel, then equally according to required flow, press corresponding button switch, make pump oil motor with corresponding frequency run, remove to drive oil pump and pump out required flow.Refuel and be divided into two kinds of situations when finishing: 1) under the quantitative refueling situation, refuel when finishing, the control mainboard in the fuel charger hydraulic control system sends shutdown signal and gives frequency-variable controller, and this moment, pump oil motor stopped operating, so need not to press any switch key.2) under the non-quantitation oiling situation, refuel when finishing, the self-styled jumping rifle of nozzle, the limit switch of installing at nozzle has just worked: during oiling, the oil gun switch handle is raised, and limit switch remains under the normally open; When jumping rifle, because switch handle unclamps and gets back to original position, limit switch be closure state under the effect of push rod, and it is self-styled to be judged to be oil gun, and limit switch sends signal to fuel charger frequency-converting control device and frequency converter, allows the Frequency Converter Control motor stop operating.
Above-described embodiment is preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spiritual essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (5)
1. self-sealing frequency conversion nozzle comprises oil inlet and from seal structure; Describedly comprise switch membrane from seal structure, self-styled superstructure is provided with self-styled top cover; Positive displacement pump in the oiling machine hydraulic system is connected with the oil inlet of nozzle, and the fuel charger frequency-converting control device in the oiling machine hydraulic system, frequency converter, pump oil motor are connected successively with positive displacement pump; It is characterized in that: described nozzle is provided with the control signal input media; Described control signal input media is electrically connected with the fuel charger frequency-converting control device; The inner limit switch of installing from described self-styled top cover to nozzle, the top of described limit switch is positioned on the self-styled top cover, and the bottom of described limit switch and the top of switch membrane offset; Described limit switch is electrically connected with the fuel charger frequency-converting control device; Thereby come the size of the operating frequency control nozzle oil pump capacity of control pump oil motor by incoming signal; Simultaneously by judging that whether being in self-styled state from seal structure comes control pump oil motor whether out of service; Described by judging that whether being in self-styled state from seal structure comes whether out of service referring to of control pump oil motor, when when seal structure is in self-styled state, control pump oil motor is out of service.
2. self-sealing frequency conversion nozzle according to claim 1, it is characterized in that: described control signal input media refers to big gear switch, middle gear switch, little gear switch and four button switches of halt switch; Described big gear switch, middle gear switch, little gear switch and halt switch are electrically connected with the fuel charger frequency-converting control device respectively.
3. self-sealing frequency conversion nozzle according to claim 1, it is characterized in that: described control signal input media is arranged on the pikestaff of nozzle.
4. according to the control method of each described self-sealing frequency conversion nozzle in the claim 1 to 3, it is characterized in that: describedly come the operating frequency of control pump oil motor by incoming signal, may further comprise the steps:
The first step is selected corresponding key switch in the control signal input media according to required oiling flow, and the button switch output signal is sent to the fuel charger frequency-converting control device;
In second step, the fuel charger frequency-converting control device produces control signal according to the signal of button switch input, and the control frequency converter drives pump oil motor by the frequency run of described button switch correspondence.
5. the control method of self-sealing frequency conversion nozzle according to claim 4 is characterized in that: the frequency of described button switch correspondence refers to that the frequency of the pump oil motor of big gear switch correspondence is that the frequency of the pump oil motor of 40Hz, middle gear switch correspondence is that the frequency of the pump oil motor of 30Hz, little gear switch correspondence is 20Hz.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110235540 CN102424352B (en) | 2011-08-17 | 2011-08-17 | Self-sealing variable-frequency oil gun and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110235540 CN102424352B (en) | 2011-08-17 | 2011-08-17 | Self-sealing variable-frequency oil gun and control method thereof |
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| CN102424352A CN102424352A (en) | 2012-04-25 |
| CN102424352B true CN102424352B (en) | 2013-07-03 |
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| CN 201110235540 Expired - Fee Related CN102424352B (en) | 2011-08-17 | 2011-08-17 | Self-sealing variable-frequency oil gun and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105858576A (en) * | 2016-05-11 | 2016-08-17 | 浙江朗庆智能科技有限公司 | Filling system for automotive urea solution and control method |
| CN110510566B (en) * | 2019-09-03 | 2020-11-20 | 河南英高能源科技有限公司 | Refuel flow control device |
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|---|---|---|---|---|
| CN201180660Y (en) * | 2008-03-10 | 2009-01-14 | 天津市绿的输油设备有限公司 | Frequency conversion oil-submersible pump |
| CN201358165Y (en) * | 2008-12-11 | 2009-12-09 | 托肯恒山科技（广州）有限公司 | Control device for hydraulic system of fuel oiling machine |
| CN201834759U (en) * | 2010-06-25 | 2011-05-18 | 托肯恒山科技（广州）有限公司 | Variable frequency hydraulic control system of fuel dispenser |
| CN202246030U (en) * | 2011-08-17 | 2012-05-30 | 华南理工大学 | Self-sealed variable-frequency oiling gun |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100387273B1 (en) * | 2000-10-30 | 2003-06-12 | 노종근 | Lubricator of lubricating oil |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201180660Y (en) * | 2008-03-10 | 2009-01-14 | 天津市绿的输油设备有限公司 | Frequency conversion oil-submersible pump |
| CN201358165Y (en) * | 2008-12-11 | 2009-12-09 | 托肯恒山科技（广州）有限公司 | Control device for hydraulic system of fuel oiling machine |
| CN201834759U (en) * | 2010-06-25 | 2011-05-18 | 托肯恒山科技（广州）有限公司 | Variable frequency hydraulic control system of fuel dispenser |
| CN202246030U (en) * | 2011-08-17 | 2012-05-30 | 华南理工大学 | Self-sealed variable-frequency oiling gun |
Non-Patent Citations (2)
| Title |
|---|
| 万勤波等.燃油加油机泵送***变频模式设计及节能测试.《液压与气动》.2010,(第1期),14-16. |
| 燃油加油机泵送***变频模式设计及节能测试;万勤波等;《液压与气动》;20100131(第1期);14-16 * |
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