CN112648538A - Oil supply pressure adjusting device - Google Patents
Oil supply pressure adjusting device Download PDFInfo
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- CN112648538A CN112648538A CN202011445948.XA CN202011445948A CN112648538A CN 112648538 A CN112648538 A CN 112648538A CN 202011445948 A CN202011445948 A CN 202011445948A CN 112648538 A CN112648538 A CN 112648538A
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- 238000012545 processing Methods 0.000 claims abstract description 29
- 239000003990 capacitor Substances 0.000 claims description 77
- 239000000446 fuel Substances 0.000 claims description 60
- 239000007788 liquid Substances 0.000 claims description 42
- 238000012544 monitoring process Methods 0.000 claims description 29
- 238000000605 extraction Methods 0.000 claims description 13
- 230000008054 signal transmission Effects 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000002828 fuel tank Substances 0.000 claims 4
- 238000000034 method Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/14—Conveying liquids or viscous products by pumping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- Water Supply & Treatment (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention provides an oil supply pressure adjusting device, which comprises an oil conveying tank, oil to be conveyed, an oil conveying valve, an oil conveying pipeline, an oil supply pump, a change-over valve, an oil inlet valve, an air pressure adjusting device, an air conveying valve, an air exhaust valve, oil way terminal equipment, an oil pressure sensor, a signal processing circuit, a remote display unit and a comprehensive control unit And the adjustment is quick.
Description
Technical Field
The invention relates to the field of oil supply pressure testing, in particular to an oil supply pressure adjusting device.
Background
The oil supply system has a different structural composition depending on the application, but the main components are basically the same, and generally, the oil supply system is composed of a branch oil supply system, an oil pump, an auxiliary device, a pressure regulator, and the like.
The oil supply pressure of the oil supply system can greatly influence the use of equipment, and if the oil supply pressure is not within a preset range, the oil equipment can break down, so that the system where the equipment is located breaks down integrally, and therefore the regulation of the oil supply pressure in the oil supply system is very important.
However, in the prior art, when the oil supply pressure is adjusted, a mechanical structure is generally adopted to adjust the oil supply pressure, such an adjustment method cannot effectively adjust the oil supply pressure when oil equipment is not used, and the accuracy of adjusting the oil supply pressure cannot be ensured only by the design of the mechanical structure.
Disclosure of Invention
Therefore, in order to overcome the above problems, the present invention provides a fuel supply pressure adjusting apparatus, which includes a fuel delivery tank, a fuel to be delivered, a fuel delivery valve, a fuel delivery pipe, a fuel supply pump, a change-over valve, a fuel inlet valve, a gas pressure adjusting device, a fuel delivery valve, a gas extraction valve, a fuel line terminal device, a fuel pressure sensor, a signal processing circuit, a remote display unit, and a comprehensive control unit.
The oil delivery system comprises an oil delivery tank, an oil delivery pump, an air pressure adjusting device, an oil delivery valve, an oil delivery pump, an oil supply pump, an oil delivery valve, an oil delivery pump, an oil extraction valve, an oil delivery pump, an oil extraction valve, an oil delivery pump, an oil extraction valve, an oil supply pump and an air pressure adjusting device, wherein the oil delivery pump is arranged in the oil delivery tank; the oil pressure sensor is connected with the signal processing circuit, the signal processing circuit is connected with the comprehensive control unit, the remote display unit is connected with the comprehensive control unit, the air pressure adjusting device is connected with the comprehensive control unit, the comprehensive control unit is connected with the oil delivery valve, the change-over valve, the oil inlet valve, the air delivery valve and the air exhaust valve, and the change-over valve can only open an oil delivery passage at one end at a time.
When the oil supply pressure adjusting device works, the comprehensive control unit controls the oil delivery valve to be opened, the oil to be transported is transported to the oil supply pump through the oil pipeline, the oil supply pump outputs the oil to be transported, the oil pressure sensor is used for monitoring an oil pressure signal of the oil supply pump, the oil pressure sensor transmits the collected oil pressure signal to the signal processing circuit for signal processing, the signal processing circuit processes the received oil pressure signal and transmits the processed oil pressure signal to the comprehensive control unit, the comprehensive control unit converts the received oil pressure signal into an oil pressure value, a preset oil pressure value range is stored in the comprehensive control unit, if the oil pressure signal received by the comprehensive control unit is in the preset oil pressure value range, the comprehensive control unit controls the change-over valve to open the oil delivery passage of the oil supply pump and the oil path terminal equipment; if the oil pressure signal received by the integrated control unit is larger than the upper limit value of the preset oil pressure value range, the integrated control unit controls the switching valve to open the oil delivery path of the oil supply pump and the oil delivery tank, the integrated control unit controls the oil inlet valve to be opened so that the oil to be transported flows back into the oil transporting tank, meanwhile, the comprehensive control unit controls the air extraction valve to be opened, the comprehensive control unit controls the air pressure adjusting device to extract the gas in the oil transportation tank until the oil pressure value of the oil supply pump is within the preset oil pressure value range, at the moment, the comprehensive control unit controls the air pressure adjusting device to stop working, the comprehensive control unit controls the air extraction valve to be closed, the comprehensive control unit controls the conversion valve to open an oil delivery passage of the oil supply pump and the oil way terminal equipment; if the oil pressure signal received by the integrated control unit is smaller than the lower limit value of the preset oil pressure value range, the integrated control unit controls the switching valve to open the oil delivery path of the oil supply pump and the oil delivery tank, the integrated control unit controls the oil inlet valve to be opened so that the oil to be transported flows back into the oil transporting tank, meanwhile, the comprehensive control unit controls the gas transmission valve to be opened, the comprehensive control unit controls the air pressure adjusting device to inject gas into the oil transmission tank until the oil pressure value of the oil supply pump is within the preset oil pressure value range, at the moment, the comprehensive control unit controls the air pressure adjusting device to stop working, the comprehensive control unit controls the air extraction valve to be closed, the comprehensive control unit controls the conversion valve to open an oil delivery passage of the oil supply pump and the oil way terminal equipment; and the comprehensive control unit transmits the received oil pressure signal to the remote display unit for display.
Specifically, when the oil supply pressure adjusting device works, the oil supply pump runs at a preset power, and the preset power is matched with the preset oil pressure value range.
Specifically, fuel feeding pressure adjusting device still includes a liquid level monitoring unit, liquid level monitoring unit set up in the inside top of fuel delivery tank, liquid level monitoring unit is used for the monitoring in the fuel delivery tank treat the liquid level height signal of fuel delivery liquid, liquid level monitoring unit will gather liquid level height signal transmission extremely the integrated control unit, the integrated control unit converts received liquid level height signal into liquid level height value, still the storage has warning liquid level height value in the integrated control unit, if liquid level height value is less than or equal to warning liquid level height value, then the integrated control unit with alarm signal transmission extremely remote display unit.
Specifically, the oil delivery valve, the change-over valve, the oil inlet valve, the air delivery valve and the air extraction valve are all electromagnetic valves.
Specifically, fuel feeding pressure adjusting device still includes a temperature monitoring unit, the temperature monitoring unit set up in inside the fuel delivery tank, the temperature monitoring unit is used for the monitoring temperature signal in the fuel delivery tank, the temperature signal transmission that the temperature monitoring unit will gather extremely the integrated control unit, the integrated control unit converts received temperature signal into the temperature value, still the storage has the temperature threshold value in the integrated control unit, if the temperature value is greater than or equal to the temperature threshold value, then the integrated control unit with alarm signal transmission extremely the remote display unit.
Specifically, the integrated control unit is connected with the remote display unit in a wireless communication mode.
Specifically, the signal processing circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, a first diode, a second diode and an operational amplifier.
Wherein, the output end of the oil pressure sensor is connected with one end of the first capacitor, one end of the third resistor is grounded, the other end of the first capacitor is connected with the other end of the third resistor, the other end of the first capacitor is connected with the non-inverting input end of the operational amplifier, one end of the second capacitor is grounded, the other end of the second capacitor is connected with one end of the second resistor, the other end of the second resistor is connected with the inverting input end of the operational amplifier, the other end of the second resistor is connected with one end of the first resistor, one end of the sixth capacitor is grounded, the other end of the sixth capacitor is connected with the anode of the second diode, one end of the fourth capacitor is grounded, the other end of the fourth capacitor is connected with the anode of the second diode, and the cathode of the second diode is connected with the other end of the first resistor, the other end of the first resistor is connected with the output end of the operational amplifier, the positive power supply end of the operational amplifier is connected with a power supply + Vs, the negative power supply end of the operational amplifier is connected with a power supply-Vs, one end of the fifth capacitor is grounded, the other end of the fifth capacitor is connected with a power supply + Vs, one end of the third capacitor is grounded, the other end of the third capacitor is connected with a power supply + Vs, the cathode of the first diode is connected with the power supply + Vs, the anode of the first diode is connected with the output end of the operational amplifier, one end of the seventh capacitor is grounded, the other end of the seventh capacitor is connected with one end of the fourth resistor, the other end of the fourth resistor is connected with the output end of the operational amplifier, and the output end of the operational amplifier is connected with the input end of the comprehensive control unit.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides an oil supply pressure adjusting device which comprises an oil supply tank, oil to be delivered, an oil delivery valve, an oil delivery pipeline, an oil supply pump, a conversion valve, an oil inlet valve, an air pressure adjusting device, an air delivery valve, an air exhaust valve, oil way terminal equipment, an oil pressure sensor, a signal processing circuit, a remote display unit and a comprehensive control unit And (4) the method is quick.
Drawings
Fig. 1 is a structural view of an oil supply pressure adjusting apparatus of the present invention;
fig. 2 is a schematic view of an oil supply pressure adjusting apparatus of the present invention;
fig. 3 is a circuit diagram of a signal processing circuit according to the present invention.
Reference numerals: 1-oil conveying tank, 2-oil to be conveyed, 3-oil conveying valve, 4-oil conveying pipeline, 5-oil supply pump, 6-change-over valve, 7-oil inlet valve, 8-air pressure regulating device, 9-air conveying valve, 10-air extracting valve and 11-oil way terminal equipment.
Detailed Description
The oil supply pressure adjusting apparatus according to the present invention will be described in detail with reference to the accompanying drawings and embodiments.
As shown in fig. 1-2, the oil supply pressure adjusting device provided by the invention comprises an oil conveying tank (1), oil to be conveyed (2), an oil conveying valve (3), an oil conveying pipeline (4), an oil supply pump (5), a change-over valve (6), an oil inlet valve (7), an air pressure adjusting device (8), an air conveying valve (9), an air suction valve (10), an oil way terminal device (11), an oil pressure sensor, a signal processing circuit, a remote display unit and a comprehensive control unit.
The oil delivery system is characterized in that oil to be delivered (2) is placed in the oil delivery tank (1), the volume of the oil to be delivered (2) is less than two thirds of that of the oil delivery tank (1), the bottom of the oil delivery tank (1) is connected with the oil delivery pipeline (4) through the oil delivery valve (3), the oil delivery pipeline (4) is connected with the input end of the oil supply pump (5), the output end of the oil supply pump (5) is connected with the oil way terminal equipment (11) through the change-over valve (6), the output end of the oil supply pump (5) is further connected with the upper part of the oil delivery tank (1) through the oil inlet valve (7), and the air pressure adjusting device (8) is connected with the upper part of the oil delivery tank (1) through the air delivery valve (9) and the air extraction valve (10); the oil pressure sensor with signal processing circuit connects, signal processing circuit with the integrated control unit connects, the remote display unit with the integrated control unit connects, atmospheric pressure adjusting device (8) with the integrated control unit connects, the integrated control unit with oil delivery valve (3) change-over valve (6) advance oil valve (7) air delivery valve (9) and bleeder valve (10) are connected, one end oil delivery passageway only can be opened in change-over valve (6) once.
When fuel feeding pressure adjusting device operation, the integrated control unit control fuel delivery valve (3) are opened, treat that fuel delivery liquid (2) pass through oil pipeline (4) transmit extremely fuel feed pump (5), fuel feed pump (5) will treat fuel delivery liquid (2) output, oil pressure sensor is used for the monitoring the oil pressure signal of fuel feed pump (5), oil pressure signal transmission that oil pressure sensor will gather extremely signal processing circuit carries out signal processing, signal processing circuit carries out signal processing to received oil pressure signal and then transmits extremely integrated control unit, integrated control unit converts received oil pressure signal into the oil pressure value, the storage has a preset oil pressure value scope in the integrated control unit, if the received oil pressure signal of integrated control unit is in preset oil pressure value scope, then integrated control unit control change-over valve (6) are opened oil feed pump (5) with oil feed pump (5) oil value scope An oil delivery passage of a road terminal device (11); if the oil pressure signal received by the comprehensive control unit is greater than the upper limit value of the preset oil pressure value range, the comprehensive control unit controls the change-over valve (6) to open the oil supply pump (5) and the oil transportation passage of the oil transportation tank (1), the comprehensive control unit controls the oil inlet valve (7) to be opened, so that the oil transportation liquid (2) flows back to the oil transportation tank (1), meanwhile, the comprehensive control unit controls the air suction valve (10) to be opened, the comprehensive control unit controls the air pressure adjusting device (8) to extract gas in the oil transportation tank (1) until the oil pressure value of the oil supply pump (5) is in the preset oil pressure value range, at the moment, the comprehensive control unit controls the air pressure adjusting device (8) to stop working, the comprehensive control unit controls the air suction valve (10) to be closed, the comprehensive control unit controls the change-over valve (6) to be opened, the oil supply pump (5) and the oil circuit to be finished An oil delivery passage of the end device (11); if the oil pressure signal that the integrated control unit received is less than predetermine the lower limit value of oil pressure value scope, then the integrated control unit control change-over valve (6) are opened fuel feeding pump (5) with the oil transportation route of oil transportation case (1), the integrated control unit control advance oil valve (7) are opened for wait oil transportation liquid (2) to flow back extremely in oil transportation case (1), simultaneously, the integrated control unit control gas delivery valve (9) are opened, the integrated control unit control atmospheric pressure adjusting device (8) to inject gas in oil transportation case (1), until the oil pressure value of fuel feeding pump (5) is in predetermine the oil pressure value scope, at this moment, the integrated control unit control atmospheric pressure adjusting device (8) stop the operation, the integrated control unit control bleeder valve (10) are closed, the integrated control unit control change-over valve (6) are opened fuel feeding pump (5) with the oil circuit An oil delivery path of the terminal device (11); and the comprehensive control unit transmits the received oil pressure signal to the remote display unit for display.
In the above embodiment, the fuel supply pressure adjusting device provided by the present invention comprises a fuel delivery tank (1), a to-be-delivered fluid (2), a fuel delivery valve (3), a fuel delivery pipeline (4), a fuel supply pump (5), a switching valve (6), a fuel inlet valve (7), a pressure adjusting device (8), a fuel delivery valve (9), an air extraction valve (10), a fuel line terminal device (11), an oil pressure sensor, a signal processing circuit, a remote display unit, and a comprehensive control unit, wherein when the fuel supply pressure adjusting device operates, the comprehensive control unit controls the fuel supply pump (5) to operate under a preset power, and the oil pressure sensor is used to monitor an oil pressure value, if the oil pressure value is not within a preset oil pressure range, the to-be-delivered fluid (2) output from the fuel delivery tank is returned to the fuel delivery tank (1) through the switching valve (6), and the pressure adjusting device (8) is used to adjust the gas content in the fuel delivery tank (1) so as, the method is operated intelligently, the working mode of the oil supply pump (5) does not need to be changed, and compared with the prior art, the method is more convenient and quicker for the oil supply pressure adjusting device.
Further, when the oil supply pressure adjusting device works, the oil supply pump (5) runs at a preset power, and the preset power is matched with the preset oil pressure value range.
Further, fuel feeding pressure adjusting device still includes a liquid level monitoring unit, liquid level monitoring unit set up in the inside top of fuel delivery tank (1), liquid level monitoring unit is used for the monitoring in fuel delivery tank (1) treat the liquid level height signal of fluid delivery liquid (2), liquid level monitoring unit with the liquid level height signal transmission who gathers extremely comprehensive control unit, comprehensive control unit converts received liquid level height signal into liquid level height value, still store warning liquid level height value in the comprehensive control unit, if liquid level height value is less than or equal to warning liquid level height value, then comprehensive control unit with alarm signal transmission extremely remote display unit.
Furthermore, the oil delivery valve (3), the change-over valve (6), the oil inlet valve (7), the air delivery valve (9) and the air extraction valve (10) are all electromagnetic valves.
Further, fuel feeding pressure adjusting device still includes a temperature monitoring unit, the temperature monitoring unit set up in inside fuel delivery tank (1), the temperature monitoring unit is used for monitoring the temperature signal in fuel delivery tank (1), the temperature signal transmission that the temperature monitoring unit will gather extremely the integrated control unit, the integrated control unit converts received temperature signal into the temperature value, still the storage has the temperature threshold value in the integrated control unit, if the temperature value is greater than or equal to the temperature threshold value, then the integrated control unit with alarm signal transmission extremely remote display unit.
Furthermore, the integrated control unit is connected with the remote display unit in a wireless communication mode.
As shown in fig. 3, the signal processing circuit includes a first resistor (R1), a second resistor (R2), a third resistor (R3), a fourth resistor (R4), a first capacitor (C1), a second capacitor (C2), a third capacitor (C3), a fourth capacitor (C4), a fifth capacitor (C5), a sixth capacitor (C6), a seventh capacitor (C7), a first diode (D1), a second diode (D2), and an operational amplifier (a 1);
wherein an output end of the oil pressure sensor is connected to one end of the first capacitor (C1), one end of the third resistor (R3) is grounded, the other end of the first capacitor (C1) is connected to the other end of the third resistor (R3), the other end of the first capacitor (C1) is connected to a non-inverting input end of the operational amplifier (a 1), one end of the second capacitor (C2) is grounded, the other end of the second capacitor (C2) is connected to one end of the second resistor (R2), the other end of the second resistor (R2) is connected to an inverting input end of the operational amplifier (a 1), the other end of the second resistor (R2) is connected to one end of the first resistor (R1), one end of the sixth capacitor (C6) is grounded, and the other end of the sixth capacitor (C6) is connected to a positive electrode of the second diode (D2), one end of the fourth capacitor (C4) is grounded, the other end of the fourth capacitor (C4) is connected with the anode of the second diode (D2), the cathode of the second diode (D2) is connected with the other end of the first resistor (R1), the other end of the first resistor (R1) is connected with the output end of the operational amplifier (A1), the anode power end of the operational amplifier (A1) is connected with a power supply + Vs, the cathode power end of the operational amplifier (A1) is connected with a power supply-Vs, one end of the fifth capacitor (C5) is grounded, the other end of the fifth capacitor (C5) is connected with the power supply + Vs, one end of the third capacitor (C3) is grounded, the other end of the third capacitor (C3) is connected with the power supply + Vs, the cathode of the first diode (D1) is connected with the power supply + Vs, the anode of the first diode (D1) is connected with the output end of the operational amplifier (A1), one end of the seventh capacitor (C7) is grounded, the other end of the seventh capacitor (C7) is connected with one end of the fourth resistor (R4), the other end of the fourth resistor (R4) is connected with the output end of the operational amplifier (a 1), and the output end of the operational amplifier (a 1) is connected with the input end of the comprehensive control unit.
In the above embodiment, the resistance value of the first resistor (R1) is 22K Ω, the resistance value of the second resistor (R2) is 680 Ω, the resistance value of the third resistor (R3) is 22K Ω, the resistance value of the fourth resistor (R4) is 1K Ω, the capacitance value of the first capacitor (C1) is 1 μ F, the capacitance value of the second capacitor (C2) is 22 μ F, the capacitance value of the third capacitor (C3) is 10nF, the capacitance value of the fourth capacitor (C4) is 100nF, the capacitance value of the fifth capacitor (C5) is 22 μ F, the capacitance value of the sixth capacitor (C6) is 100 μ F, and the capacitance value of the seventh capacitor (C7) is 220 nF.
Further, the signal processing circuit may be an amplifier manufactured by using the operational amplifier a1, and the maximum power of the output is 18W.
Furthermore, the signal processing circuit is a deep negative feedback circuit, the amplification factor of the output voltage is about Av = R1/R2, wherein the fourth resistor (R4) is a high-power resistor, because the current flowing through the fourth resistor (R4) is too large during idle.
Further, the operational amplifier (a 1) has 5 pins, which are: 1. the power supply comprises a positive phase input end, a negative power supply end, an output end and a positive power supply end, wherein the positive phase input end is 2, the negative phase input end is 3, the negative power supply end is 4, and the output end is. When a signal is input from the positive phase input terminal, the amplified signal at the output terminal has the same phase as that of the positive phase input terminal, and when a signal is input from the negative phase input terminal, the amplified signal at the output terminal has the opposite phase to that of the negative phase input terminal. The 5 pins and the 3 pins are respectively connected with the anode and the cathode of a power supply to provide energy for the operational amplifier.
Further, the magnitude of the signal V1 can be adjusted by a voltage divider circuit, then the signal V1 is input from the positive input terminal of pin 1, and after the input from the last pin 1, immediately after the signal V1 passes through the first capacitor (C1), the first capacitor (C1) functions to cut off the dc voltage at the positive input terminal and input only the ac component, the signal V1 passes through the first capacitor (C1) and reaches the positive input terminal of the operational amplifier (a 1), when the signal is input from the positive input terminal, the amplified signal at the output terminal has the same phase as that at the positive input terminal, and after the action of the operational amplifier (a 1), the signal V2 is output from pin 4, and the output signal is amplified and output after passing through the second capacitor (C2).
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. The oil supply pressure adjusting device is characterized by comprising an oil conveying tank (1), oil to be conveyed (2), an oil conveying valve (3), an oil conveying pipeline (4), an oil supply pump (5), a change-over valve (6), an oil inlet valve (7), an air pressure adjusting device (8), an air conveying valve (9), an air suction valve (10), oil way terminal equipment (11), an oil pressure sensor, a signal processing circuit, a remote display unit and a comprehensive control unit;
the oil delivery system is characterized in that oil to be delivered (2) is placed in the oil delivery tank (1), the volume of the oil to be delivered (2) is less than two thirds of that of the oil delivery tank (1), the bottom of the oil delivery tank (1) is connected with the oil delivery pipeline (4) through the oil delivery valve (3), the oil delivery pipeline (4) is connected with the input end of the oil supply pump (5), the output end of the oil supply pump (5) is connected with the oil way terminal equipment (11) through the change-over valve (6), the output end of the oil supply pump (5) is further connected with the upper part of the oil delivery tank (1) through the oil inlet valve (7), and the air pressure adjusting device (8) is connected with the upper part of the oil delivery tank (1) through the air delivery valve (9) and the air extraction valve (10); the oil pressure sensor is connected with the signal processing circuit, the signal processing circuit is connected with the comprehensive control unit, the remote display unit is connected with the comprehensive control unit, the air pressure adjusting device (8) is connected with the comprehensive control unit, the comprehensive control unit is connected with the oil delivery valve (3), the change-over valve (6), the oil inlet valve (7), the air delivery valve (9) and the air extraction valve (10), and the change-over valve (6) can only open an oil delivery passage at one end at a time;
when fuel feeding pressure adjusting device operation, the integrated control unit control fuel delivery valve (3) are opened, treat that fuel delivery liquid (2) pass through oil pipeline (4) transmit extremely fuel feed pump (5), fuel feed pump (5) will treat fuel delivery liquid (2) output, oil pressure sensor is used for the monitoring the oil pressure signal of fuel feed pump (5), oil pressure signal transmission that oil pressure sensor will gather extremely signal processing circuit carries out signal processing, signal processing circuit carries out signal processing to received oil pressure signal and then transmits extremely integrated control unit, integrated control unit converts received oil pressure signal into the oil pressure value, the storage has a preset oil pressure value scope in the integrated control unit, if the received oil pressure signal of integrated control unit is in preset oil pressure value scope, then integrated control unit control change-over valve (6) are opened oil feed pump (5) with oil feed pump (5) oil value scope An oil delivery passage of a road terminal device (11); if the oil pressure signal received by the comprehensive control unit is greater than the upper limit value of the preset oil pressure value range, the comprehensive control unit controls the change-over valve (6) to open the oil supply pump (5) and the oil transportation passage of the oil transportation tank (1), the comprehensive control unit controls the oil inlet valve (7) to be opened, so that the oil transportation liquid (2) flows back to the oil transportation tank (1), meanwhile, the comprehensive control unit controls the air suction valve (10) to be opened, the comprehensive control unit controls the air pressure adjusting device (8) to extract gas in the oil transportation tank (1) until the oil pressure value of the oil supply pump (5) is in the preset oil pressure value range, at the moment, the comprehensive control unit controls the air pressure adjusting device (8) to stop working, the comprehensive control unit controls the air suction valve (10) to be closed, the comprehensive control unit controls the change-over valve (6) to be opened, the oil supply pump (5) and the oil circuit to be finished An oil delivery passage of the end device (11); if the oil pressure signal that the integrated control unit received is less than predetermine the lower limit value of oil pressure value scope, then the integrated control unit control change-over valve (6) are opened fuel feeding pump (5) with the oil transportation route of oil transportation case (1), the integrated control unit control advance oil valve (7) are opened for wait oil transportation liquid (2) to flow back extremely in oil transportation case (1), simultaneously, the integrated control unit control gas delivery valve (9) are opened, the integrated control unit control atmospheric pressure adjusting device (8) to inject gas in oil transportation case (1), until the oil pressure value of fuel feeding pump (5) is in predetermine the oil pressure value scope, at this moment, the integrated control unit control atmospheric pressure adjusting device (8) stop the operation, the integrated control unit control bleeder valve (10) are closed, the integrated control unit control change-over valve (6) are opened fuel feeding pump (5) with the oil circuit An oil delivery path of the terminal device (11); and the comprehensive control unit transmits the received oil pressure signal to the remote display unit for display.
2. The supply-pressure regulating device according to claim 1, characterized in that the supply pump (5) is operated at a preset power that matches the preset oil pressure value range when the supply-pressure regulating device is in operation.
3. The fuel supply pressure adjusting apparatus according to claim 1, further comprising a liquid level monitoring unit disposed at a top portion of the fuel tank (1), the liquid level monitoring unit being configured to monitor a liquid level signal of the fuel to be delivered (2) in the fuel tank (1), the liquid level monitoring unit transmitting the collected liquid level signal to the integrated control unit, the integrated control unit converting the received liquid level signal into a liquid level height value, the integrated control unit further storing a warning liquid level height value therein, and if the liquid level height value is less than or equal to the warning liquid level height value, the integrated control unit transmitting a warning signal to the remote display unit.
4. The supply pressure adjusting apparatus according to claim 1, wherein the delivery valve (3), the change-over valve (6), the supply valve (7), the delivery valve (9), and the suction valve (10) are all solenoid valves.
5. The fuel supply pressure adjusting device according to claim 1, further comprising a temperature monitoring unit disposed inside the fuel tank (1), the temperature monitoring unit being configured to monitor a temperature signal inside the fuel tank (1), the temperature monitoring unit transmitting the collected temperature signal to the integrated control unit, the integrated control unit converting the received temperature signal into a temperature value, the integrated control unit further storing a temperature threshold, and if the temperature value is greater than or equal to the temperature threshold, the integrated control unit transmitting an alarm signal to the remote display unit.
6. The fuel supply pressure adjusting apparatus according to claim 1, wherein the integrated control unit is connected with the remote display unit in a wireless communication manner.
7. The oil supply pressure adjusting apparatus according to claim 1, wherein the signal processing circuit includes a first resistor (R1), a second resistor (R2), a third resistor (R3), a fourth resistor (R4), a first capacitor (C1), a second capacitor (C2), a third capacitor (C3), a fourth capacitor (C4), a fifth capacitor (C5), a sixth capacitor (C6), a seventh capacitor (C7), a first diode (D1), a second diode (D2), and an operational amplifier (a 1);
wherein an output end of the oil pressure sensor is connected to one end of the first capacitor (C1), one end of the third resistor (R3) is grounded, the other end of the first capacitor (C1) is connected to the other end of the third resistor (R3), the other end of the first capacitor (C1) is connected to a non-inverting input end of the operational amplifier (a 1), one end of the second capacitor (C2) is grounded, the other end of the second capacitor (C2) is connected to one end of the second resistor (R2), the other end of the second resistor (R2) is connected to an inverting input end of the operational amplifier (a 1), the other end of the second resistor (R2) is connected to one end of the first resistor (R1), one end of the sixth capacitor (C6) is grounded, and the other end of the sixth capacitor (C6) is connected to a positive electrode of the second diode (D2), one end of the fourth capacitor (C4) is grounded, the other end of the fourth capacitor (C4) is connected with the anode of the second diode (D2), the cathode of the second diode (D2) is connected with the other end of the first resistor (R1), the other end of the first resistor (R1) is connected with the output end of the operational amplifier (A1), the anode power end of the operational amplifier (A1) is connected with a power supply + Vs, the cathode power end of the operational amplifier (A1) is connected with a power supply-Vs, one end of the fifth capacitor (C5) is grounded, the other end of the fifth capacitor (C5) is connected with the power supply + Vs, one end of the third capacitor (C3) is grounded, the other end of the third capacitor (C3) is connected with the power supply + Vs, the cathode of the first diode (D1) is connected with the power supply + Vs, the anode of the first diode (D1) is connected with the output end of the operational amplifier (A1), one end of the seventh capacitor (C7) is grounded, the other end of the seventh capacitor (C7) is connected with one end of the fourth resistor (R4), the other end of the fourth resistor (R4) is connected with the output end of the operational amplifier (a 1), and the output end of the operational amplifier (a 1) is connected with the input end of the comprehensive control unit.
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