CN218439958U - Fuel oil pressure stabilizing device of ground test bed of aircraft engine - Google Patents
Fuel oil pressure stabilizing device of ground test bed of aircraft engine Download PDFInfo
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- CN218439958U CN218439958U CN202221705335.XU CN202221705335U CN218439958U CN 218439958 U CN218439958 U CN 218439958U CN 202221705335 U CN202221705335 U CN 202221705335U CN 218439958 U CN218439958 U CN 218439958U
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- 230000000087 stabilizing effect Effects 0.000 title claims description 48
- 239000000295 fuel oil Substances 0.000 title claims description 12
- 239000000446 fuel Substances 0.000 claims abstract description 73
- 239000007789 gas Substances 0.000 claims abstract description 73
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 230000001105 regulatory effect Effects 0.000 claims abstract description 20
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 7
- 239000011521 glass Substances 0.000 claims abstract description 6
- 239000003381 stabilizer Substances 0.000 claims abstract description 5
- 239000003921 oil Substances 0.000 claims description 77
- 229910052757 nitrogen Inorganic materials 0.000 claims description 13
- 206010015856 Extrasystoles Diseases 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000007306 turnover Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
The utility model relates to an aeroengine ground test bed fuel pressure stabilizer. The technical problem that fuel supply pressure fluctuation is large in an existing fuel supply system of a ground test bed of an aero-engine is mainly solved. The utility model adopts the technical proposal that: the utility model provides an aeroengine ground test bed fuel pressure stabilizer, its includes steady voltage oil tank, pneumatic fuel regulating valve, the telescopic level gauge of hysteresis lag, manometer, glass pipe level gauge, liquid level stop valve, pneumatic trigeminy piece, gaseous overflow valve, first check valve, six discharge valves, pneumatic pressure balance valve, second check valve, nitrogen gas stop valve, gas filter, gas reducing valve, pressure sensor and fuel stop valve, the oil inlet of steady voltage oil tank is connected with the oil-out of pneumatic fuel regulating valve, the oil inlet of pneumatic fuel regulating valve and the exit linkage of first fuel stop valve. The utility model has the advantages of higher stability, security and reliability, the maintenance is simple, convenient operation, etc.
Description
Technical Field
The utility model belongs to the technical field of hydraulic control, concretely relates to aeroengine ground test bed fuel pressure stabilizer.
Background
The fuel supply system of the ground test bed of the aircraft engine has the primary task of ensuring the fuel requirements of the engine in various working states and providing fuel with stable pressure and flow by analyzing the fuel requirements of the engine under different working conditions, different rotating speeds and different load conditions. However, the existing oil supply system has no fuel oil pressure stabilizing device, so that the oil supply pressure fluctuation is large.
Disclosure of Invention
The utility model aims at solving the great technical problem of fuel feeding pressure fluctuation that current aeroengine ground test bed fuel supply system exists, providing an aeroengine ground test bed fuel pressure stabilizer.
In order to solve the technical problem, the utility model adopts the technical scheme that:
a fuel pressure stabilizing device of an aircraft engine ground test bed comprises a pressure stabilizing oil tank, a pneumatic fuel regulating valve, a hysteresis telescopic liquid level meter, a pressure gauge, a glass tube liquid level meter, a liquid level stop valve, a pneumatic triple piece, a gas overflow valve, a first check valve, six exhaust valves, a pneumatic pressure balance valve, a second check valve, a nitrogen stop valve, a gas filter, a gas pressure reducing valve, a pressure sensor and a fuel stop valve, wherein an oil inlet of the pressure stabilizing oil tank is connected with an oil outlet of the pneumatic fuel regulating valve, an oil inlet of the pneumatic fuel regulating valve is connected with an outlet of the first fuel stop valve, an inlet of the first fuel stop valve is connected with an outlet of an oil supply pipe, an oil outlet of the pressure stabilizing oil tank is connected with an inlet of the second fuel stop valve, an outlet of the second fuel stop valve is connected with an inlet of an oil outlet pipe, the both ends of glass pipe level gauge are connected with the side of steady voltage oil tank through two liquid level stop valves respectively, the telescopic level gauge of magnetic hysteresis is established in the steady voltage oil tank, the air inlet of pneumatic fuel governing valve is connected with the gas outlet of second pneumatic trigeminy piece, the air inlet of second pneumatic trigeminy piece and the exit linkage of third stop valve, the import and the second instrument air supply of third stop valve are connected, be equipped with first pressure sensor on the oil feed pipe, the signal of telecommunication feedback end and the pneumatic fuel governing valve of magnetic hysteresis telescopic level gauge hold and are connected, its air inlet is connected with the business turn over gas port that steady voltage oil tank top set up after six discharge valves connect in parallel, first check valve connects in parallel at the both ends of discharge valve, and its gas outlet is connected with the business turn over gas port that steady voltage oil tank top set up, the air inlet and the one end of pneumatic pressure balance valve of first check valve are connected, the other end of the pneumatic pressure balance valve is connected with a gas outlet of a second one-way valve, a gas inlet of the second one-way valve is connected with a gas outlet of a gas reducing valve, a gas inlet of the gas reducing valve is connected with an outlet of a nitrogen stop valve through a gas filter, an inlet of the nitrogen stop valve is connected with a nitrogen gas source, a third pressure sensor is arranged on a connecting pipeline of the second one-way valve and the gas reducing valve, a pressure balance control end of the pneumatic pressure balance valve is connected with a gas outlet of a first pneumatic triple piece, a gas inlet of the first pneumatic triple piece is connected with a first instrument gas source through a second stop valve, a gas overflow port arranged at the top of the pressure stabilizing oil tank is connected with an inlet of a gas overflow valve, an outlet of the gas overflow valve is connected with an exhaust pipe, the second pressure sensor is arranged at the top of the pressure stabilizing oil tank, the pressure gauge is arranged on one side of the top of the pressure stabilizing oil tank, and a drain outlet arranged at the bottom of the pressure stabilizing oil tank is connected with a drain pipe through the first stop valve.
The utility model has the advantages that:
the utility model discloses be connected to in the engine fuel pipeline. When the fuel pump presses fuel into the pressure stabilizing oil tank, the volume of nitrogen at the upper part of the pressure stabilizing oil tank is reduced along with the increase of pressure, and the fuel is gradually stored. If the test bed fuel supply system needs to increase fuel during working, the pressure stabilizing oil tank discharges the fuel, so that the energy of the system is supplemented. When constant static pressure is needed for a long time, the pressure stabilizing oil tank can greatly improve the accuracy of oil supply pressure and balance pressure fluctuation possibly generated in the circulating operation process. Because the gas is very elastic and compressible, the volume change of the fuel under the action of pressure is very small (under the condition of constant temperature). In the event of a volumetric change in fuel demand, the gas can still maintain a relatively high pressure without the volume of fuel in the container becoming smaller due to the change in fuel demand, resulting in a rapid loss of pressure in the fuel. The technical problem that the fuel supply pressure fluctuation of the existing fuel supply system of the ground test bed of the aero-engine is large is solved. Therefore, compared with the prior art, the utility model has the advantages of higher stability, security and reliability, the maintenance is simple, convenient operation, technology maturity and energy-conserving low consumption.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the fuel pressure stabilizing device for the ground test bed of the aircraft engine in the embodiment includes a pressure stabilizing oil tank 1, a pneumatic fuel regulating valve 2, a hysteresis telescopic level meter 3, a pressure gauge 4, a glass tube level meter 5, two liquid level stop valves 6.1, 6.2, three stop valves 7.1-7.3, two pneumatic triple parts 8.1, 8.2, a gas overflow valve 9, a first check valve 10, six exhaust valves 11.1-11.6, two pneumatic pressure balance valves 12.1, 12.2, a second check valve 13, a nitrogen stop valve 14, a gas filter 15, a gas pressure reducing valve 16, three pressure sensors 17.1-17.3 and two fuel stop valves 18.1, 18.2, wherein an oil inlet of the pressure stabilizing oil tank 1 is connected with an oil outlet of the pneumatic fuel regulating valve 2, an oil inlet of the pneumatic fuel regulating valve 2 is connected with an outlet of the first fuel stop valve 18.1, an inlet of the first fuel stop valve 18.1 is connected with an outlet of an oil supply pipe P1, an oil outlet of the pressure stabilizing oil tank 1 is connected with an inlet of a second fuel stop valve 18.2, an outlet of the second fuel stop valve 18.2 is connected with an inlet of an oil outlet pipe P2, two ends of a glass tube liquid level meter 5 are respectively connected with the side surface of the pressure stabilizing oil tank 1 through two liquid level stop valves 6.1 and 6.2, a magnetic hysteresis telescopic liquid level meter 3 is arranged in the pressure stabilizing oil tank 1, an air inlet of a pneumatic fuel regulating valve 2 is connected with an air outlet of a second pneumatic triple piece 8.2, an air inlet of the second pneumatic triple piece 8.2 is connected with an outlet of a third stop valve 7.3, an inlet of the third stop valve 7.3 is connected with a second instrument air source P4.2, a first pressure sensor 17.1 is arranged on the oil supply pipe, an electric signal feedback end of the magnetic hysteresis telescopic liquid level meter 3 is connected with an opening degree adjusting end of the pneumatic fuel regulating valve 2, air inlets of six exhaust valves 11.1-11.6 are connected in parallel and then are connected with an air inlet and outlet arranged at the top of the pressure stabilizing oil tank 1, the utility model discloses a pressure stabilizing oil tank, including first check valve 10, two pneumatic pressure balance valves 12.1, 12.2, the gas outlet of first check valve 10 is connected at the both ends of discharge valve in parallel, and its gas outlet is connected with the business turn over gas port that 1 top set up of pressure stabilizing oil tank, the air inlet and the one end of two pneumatic pressure balance valves 12.1, 12.2 of first check valve 10 are connected, the other end of two pneumatic pressure balance valves 12.1, 12.2 is connected with the gas outlet of second check valve 13, the air inlet and the gas outlet of gas relief valve 16 of second check valve 13 are connected, the air inlet and the exit linkage of gas filter 15 with nitrogen gas stop valve 14 of gas relief valve 16, the import and the nitrogen gas source P3 of nitrogen gas stop valve 14 are connected, be equipped with third pressure sensor 17.3 on the connecting tube of second check valve 13 and gas relief valve 16, the pressure balance control end of two pneumatic pressure balance valves 12.1, 12.2 is connected with the gas outlet of first pneumatic triple 8.1, the air inlet of first pneumatic triple 8.1 is connected with first instrument gas source P4.1 through second pressure stabilizing oil tank P4.2, the gas outlet of pressure stabilizing oil tank is connected through the blow-off valve Y of pressure relief valve 9 of pressure relief valve 1, and the blow-off valve 9 of the top is connected on one side of the drain outlet of the drain pipe 1 of pressure relief valve 1 is connected with the drain pipe.
The utility model discloses a working process does:
in the working process, fuel enters the pressure-stabilizing oil tank 1 through the fuel supply pipe, and the pneumatic fuel regulating valve 2 regulates the opening degree according to the liquid level fed back by the hysteresis telescopic liquid level meter 3 to regulate the flow of the fuel entering the pressure-stabilizing oil tank 1. The pneumatic fuel regulating valve 2 is controlled by the air supply pressure of the second instrument air supply P4.2. The fuel oil in the pressure stabilizing oil tank 1 is supplied to the engine through the second fuel oil stop valve 18.2 and the oil outlet pipeline, and the oil supply pressure is fed back to the upper computer PLC through the first pressure sensor 17.1.
The upper part of the pressure stabilizing oil tank 1 is nitrogen. A nitrogen gas source P3 enters the pressure stabilizing oil tank 1 through a pipeline via a nitrogen stop valve 14, a gas filter 15, a gas reducing valve 16, a second check valve 13, two pneumatic pressure balancing valves 12.1 and 12.2 and a first check valve 10, and the gas pressure in the pressure stabilizing oil tank 1 is fed back to the PLC (programmable logic controller) of an upper computer through a second pressure sensor 17.2. The two pneumatic pressure compensation valves 12.1, 12.2 are controlled by a first instrument gas source P4.1. Six exhaust valves 11.1-11.6 are arranged in parallel, can instantly discharge nitrogen at the upper part of the pressure stabilizing oil tank 1, and can adjust the pressure of the supplied and exhausted air in real time, thereby controlling the nitrogen pressure of the pressure stabilizing oil tank 1.
When the fuel pump presses fuel into the pressure stabilizing oil tank 1, the volume of nitrogen at the upper part of the pressure stabilizing oil tank 1 is reduced along with the increase of pressure, and the fuel is gradually stored. If the test bed fuel supply system needs to increase fuel during operation, the pressure stabilizing oil tank 1 discharges the fuel, so that the energy of the system is supplemented. When a constant static pressure is required for a long time, the pressure stabilizing oil tank 1 can greatly improve the accuracy of oil supply pressure and balance pressure fluctuation which may be generated in the circulating operation process. Because the gas is very elastic and compressible, the volume change of the fuel under the action of pressure is very small (under the condition of constant temperature). In the event of a volumetric change in fuel demand, the gas can still maintain a relatively high pressure without the volume of fuel in the container becoming smaller due to the change in fuel demand, resulting in a rapid loss of pressure of the fuel.
Claims (1)
1. The utility model provides an aeroengine ground test bed fuel pressure stabilizer which characterized in that: the oil-saving control system comprises a pressure stabilizing oil tank (1), a pneumatic fuel oil regulating valve (2), a hysteresis telescopic liquid level meter (3), a pressure gauge (4), a glass tube liquid level meter (5), liquid level stop valves (6.1 and 6.2), stop valves (7.1-7.3), pneumatic triple parts (8.1 and 8.2), a gas overflow valve (9), a first check valve (10), six exhaust valves (11.1-11.6), pneumatic pressure balance valves (12.1 and 12.2), a second check valve (13), a nitrogen stop valve (14), a gas filter (15), a gas pressure reducing valve (16), pressure sensors (17.1-17.3) and fuel stop valves (18.1 and 18.2), wherein an oil inlet of the pressure stabilizing oil tank (1) is connected with an oil outlet of the pneumatic fuel oil regulating valve (2), an oil inlet of the pneumatic fuel oil regulating valve (2) is connected with an outlet of the first fuel oil stop valve (18.1), an inlet of the first fuel oil tank (18.1) is connected with an outlet of the oil supply oil tank, an oil inlet of the pressure stabilizing oil tank (1) is connected with an oil outlet of the second fuel oil regulating valve (2), and an inlet of the second fuel oil stabilizing oil tank (6) is connected with an outlet of the hysteresis telescopic liquid level stop valve (1), and an inlet of the hysteresis telescopic liquid level meter (6) through the two ends of the two hysteresis telescopic liquid level stop valves (6) are respectively connected with the two hysteresis telescopic liquid level stop valves (6) and the pressure stabilizing oil tank (6) and the two ends of the pressure stabilizing oil tank (1), the pneumatic fuel regulating valve (2) is connected with the gas outlet of a second pneumatic triple piece (8.2), the gas inlet of the second pneumatic triple piece (8.2) is connected with the outlet of a third cut-off valve (7.3), the inlet of the third cut-off valve (7.3) is connected with a second instrument gas source, a first pressure sensor (17.1) is arranged on the oil supply pipe, the electric signal feedback end of the magnetic hysteresis telescopic liquid level meter (3) is connected with the opening degree regulating end of the pneumatic fuel regulating valve (2), the gas inlets of six exhaust valves (11.1-11.6) are connected with the gas inlet and outlet port arranged at the top of the pressure stabilizing oil tank (1) after being connected in parallel, and the first one-way valve (10) is connected at the two ends of the exhaust valves in parallel, the gas outlet of the gas inlet is connected with the gas inlet and the gas outlet arranged at the top of the pressure stabilizing oil tank (1), the gas inlet of the first one-way valve (10) is connected with one end of a pneumatic pressure balancing valve (12.1, 12.2), the other end of the pneumatic pressure balancing valve (12.1, 12.2) is connected with the gas outlet of the second one-way valve (13), the gas inlet of the second one-way valve (13) is connected with the gas outlet of a gas reducing valve (16), the gas inlet of the gas reducing valve (16) is connected with the outlet of a nitrogen stop valve (14) through a gas filter (15), the inlet of the nitrogen stop valve (14) is connected with a nitrogen gas source, and a third pressure sensor (17.3) is arranged on the connecting pipeline of the second one-way valve (13) and the gas reducing valve (16), the pressure balance control end of the pneumatic pressure balance valve (12.1, 12.2) is connected with the gas outlet of the first pneumatic triple piece (8.1), the gas inlet of the first pneumatic triple piece (8.1) is connected with a first instrument gas source through the second stop valve (7.2), a gas overflow port arranged at the top of the pressure stabilizing oil tank (1) is connected with the inlet of the gas overflow valve (9), the outlet of the gas overflow valve (9) is connected with the exhaust pipe, the second pressure sensor (17.2) is arranged at the top of the pressure stabilizing oil tank (1), the pressure gauge (4) is arranged on one side of the top of the pressure stabilizing oil tank (1), and a drain outlet arranged at the bottom of the pressure stabilizing oil tank (1) is connected with a drain pipe through the first stop valve (7.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221705335.XU CN218439958U (en) | 2022-07-04 | 2022-07-04 | Fuel oil pressure stabilizing device of ground test bed of aircraft engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221705335.XU CN218439958U (en) | 2022-07-04 | 2022-07-04 | Fuel oil pressure stabilizing device of ground test bed of aircraft engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218439958U true CN218439958U (en) | 2023-02-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221705335.XU Active CN218439958U (en) | 2022-07-04 | 2022-07-04 | Fuel oil pressure stabilizing device of ground test bed of aircraft engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218439958U (en) |
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2022
- 2022-07-04 CN CN202221705335.XU patent/CN218439958U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231008 Address after: 102206 No.2, Gaoxin 3rd Street, Huilongguan town, Changping District, Beijing Patentee after: AVIC APC INTEGRATION EQUIPMENT Co.,Ltd. Address before: 030006 Nangu Section of Taizhong Industrial Park, Yuci District, Jinzhong City, Shanxi Province Patentee before: TAIZHONG HEAVY MACHINERY GROUP YUCI HYDRAULIC INDUSTRY CO.,LTD. |
|
| TR01 | Transfer of patent right |