Fuel nozzle high-pressure test fuel processing device and fuel nozzle high-pressure test platform

Abstract

The invention relates to the technical field of fuel nozzle test devices, and discloses a fuel nozzle high-pressure test fuel treatment device and a fuel nozzle high-pressure test platform. The fuel treatment device for the high-pressure test of the fuel nozzle comprises a high-pressure cabin, the interior of the high-pressure cabin is suitable for outputting high-pressure fuel after the test of the fuel nozzle, and the output end of the high-pressure cabin is communicated with an oil discharge pipeline; the pressure reducing one-way valve is mounted on the oil discharging pipeline, and a throttling stop valve is mounted on the oil discharging pipeline at the downstream of the pressure reducing one-way valve; and the oil return tank is mounted on the oil discharge pipeline at the downstream of the throttling stop valve and is used for temporarily storing the normal-pressure fuel oil. After the test, the fuel enters the pressure reduction one-way valve along the oil discharge pipeline, the liquid fluid is allowed to pass through the pressure reduction one-way valve in a one-way mode, high-pressure air and the fuel can be effectively prevented from flowing back, unnecessary potential safety hazards caused by the fact that the high-pressure air enters the sealed oil return tank along the oil discharge pipeline are eliminated, and the risk of fuel leakage is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel nozzle test devices, and particularly relates to a fuel treatment device for high-pressure tests of fuel nozzles and a high-pressure test platform for fuel nozzles. Background Art

[0002] The fuel nozzle test under high pressure aims to simulate the real working state of the fuel nozzle in the combustion chamber. For this purpose, a set of high-pressure test platforms is designed, in which the fuel discharge and recovery device in the high-pressure chamber is an important part of the platform and a key link for conducting fuel nozzle tests under high pressure. In the high-pressure nozzle test platform, the fuel discharge and recovery device is located at the end of the test chamber and is used to process the high-pressure fuel and air mixture after passing through the nozzle outlet test.

[0003] The existing fuel discharge device only installs a simple manual valve behind the high-pressure chamber and only has the functions of sealing and discharging. However, the fuel entering the drain tank from the nozzle outlet on the high-pressure nozzle test platform is accompanied by high-pressure air, with the air pressure reaching up to 2 MPa and the fuel pressure reaching up to 10 MPa, and it cannot be directly discharged. Since the volume inside the tank cannot be monitored in real time during the test, the fuel accumulates at the bottom of the high-pressure chamber. If not emptied in time, it may cause fuel backflow. Summary of the Invention

[0004] In view of this, the present invention provides a fuel treatment device for high-pressure tests of fuel nozzles and a high-pressure test platform for fuel nozzles to solve the problem of fuel backflow existing in the high-pressure test platform of fuel nozzles during the test process.

[0005] In a first aspect, the present invention provides a fuel treatment device for high-pressure tests of fuel nozzles, which is installed on a high-pressure test platform for fuel nozzles to discharge and recover the fuel after multi-fuel nozzle tests. The fuel treatment device includes:

[0006] A high-pressure chamber, the interior of which is adapted to output high-pressure fuel after fuel nozzle tests, and the output end of the high-pressure chamber is communicated with an oil discharge pipeline;

[0007] A pressure-reducing check valve is installed on the oil discharge pipeline, and a throttle stop valve is installed on the oil discharge pipeline downstream of the pressure-reducing check valve;

[0008] A return oil tank is installed on the oil discharge pipeline downstream of the throttle stop valve, and the return oil tank is used for temporarily storing normal-pressure fuel.

[0009] The fuel treatment device for high-pressure testing of fuel nozzles is used for fuel discharge and recovery after the high-pressure testing of fuel nozzles in a high-pressure environment. It is installed at the very end of the high-pressure testing platform for fuel nozzles in a high-pressure environment. After the test, the fuel flows along the oil discharge pipeline into the pressure-reducing check valve. Through the special effect that allows liquid fluid to pass through unidirectionally by the pressure-reducing check valve, it can effectively block the reverse flow of high-pressure air and fuel, thus eliminating the unnecessary safety hazards caused by high-pressure air entering the sealed return fuel tank along the oil discharge pipeline and avoiding the risk of fuel leakage. Moreover, during the test process, under the promotion of fuel with a certain pressure, the pressure-reducing check valve automatically operates under pressure to reduce the high-pressure fuel to normal pressure and stabilize it. The pressure-reducing check valve is a throttling element with variable local resistance, that is, by changing the throttling area, the flow velocity and the kinetic energy of the fluid are changed, resulting in different pressure losses, so as to achieve the purpose of pressure reduction. The fuel after being reduced in pressure by the pressure-reducing check valve is then effectively flow-regulated from a large flow rate to a small flow rate through the throttle stop valve, avoiding the impact of the large-flow fuel on the return fuel tank and alleviating the flow velocity of the fuel, so as to achieve the purpose of recovering the high-pressure fuel into the return fuel tank as normal-pressure small-flow fuel, and it can automatically operate under the promotion of high pressure without manual prompting, greatly improving the test efficiency and the test safety factor.

[0010] In an alternative embodiment, an exhaust pipeline is connected to the oil discharge pipeline between the pressure-reducing check valve and the high-pressure chamber, and the exhaust pipeline is used to discharge the pressurized gas in the high-pressure chamber.

[0011] In an alternative embodiment, an oil-gas separation device is installed on the exhaust pipeline. The gas-side outlet of the oil-gas separation device is connected to the downstream exhaust pipeline. By setting the oil-gas separation device, the fuel and the pressurized gas entering the exhaust pipeline are separated, and then only the gas is allowed to pass through the exhaust pipeline and be discharged, avoiding the fuel accumulating too much in the exhaust pipeline and entering the exhaust system, resulting in fuel accumulation in the exhaust tank and causing fuel leakage. The safety performance of the fuel treatment device for high-pressure testing of fuel nozzles is improved.

[0012] In an alternative embodiment, a silencing tower is installed on the exhaust pipeline, and an air release branch is connected to the exhaust pipeline upstream of the silencing tower. By setting the silencing tower to weaken the noise at the outlet end of the exhaust pipeline, when the air pressure in the exhaust pipeline is too high, the air release branch is opened to use the air release branch for emergency exhaust.

[0013] In an alternative embodiment, a control ball valve is installed on the air release branch.

[0014] In an alternative embodiment, the pressure-reducing check valve is a direct-acting pressure reducing valve. The direct-acting pressure reducing valve can effectively adjust the pressure within the pressure range, and the outlet pressure can be ensured to be in the normal pressure state.

[0015] In an alternative embodiment, an intermediate fuel tank is installed on the drain oil pipeline between the high-pressure chamber and the pressure-reducing check valve. The intermediate fuel tank serves to accumulate high-pressure fuel. Generally, during the test, the high-pressure fuel flowing through the nozzle accumulates in the intermediate fuel tank under the action of gravity and then enters the pressure-reducing check valve along the drain oil pipeline.

[0016] In an alternative embodiment, the intermediate fuel tank is arranged at the bottom of the high-pressure chamber, facilitating the accumulation of high-pressure fuel in the intermediate fuel tank under the action of gravity.

[0017] In an alternative embodiment, the volume of the intermediate fuel tank is smaller than that of the high-pressure chamber.

[0018] In a second aspect, the present invention also provides a high-pressure test platform for a fuel nozzle, which has the fuel nozzle high-pressure test fuel treatment device of the present invention. Since the high-pressure test platform for a fuel nozzle includes the fuel nozzle high-pressure test fuel treatment device and has the same effects as the fuel nozzle high-pressure test fuel treatment device, it will not be elaborated herein. Description of the Drawings

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of the fuel nozzle high-pressure test fuel treatment device provided by the embodiment of the present invention.

[0021] Figure 2 It is a schematic structural diagram of the drain oil pipeline provided by the embodiment of the present invention.

[0022] Description of the reference numerals: 1, high-pressure chamber; 2, intermediate fuel tank; 3, pressure-reducing check valve; 4, throttle stop valve; 5, return fuel tank; 6, oil-gas separation device; 7, control ball valve; 8, silencing tower. Detailed Embodiments

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0024] The following will describe embodiments of the present invention in conjunction with Figure 1 and Figure 2 .

[0025] According to an embodiment of the present invention, on the one hand, a fuel treatment device for high-pressure testing of fuel nozzles is provided, which is installed on a high-pressure test platform for fuel nozzles to discharge and recover the fuel after multi-fuel nozzle tests. The fuel treatment device includes a high-pressure chamber 1, a pressure-reducing check valve 3, and a fuel return tank 5.

[0026] The interior of the high-pressure chamber 1 is adapted to output high-pressure fuel after fuel nozzle tests. The output end of the high-pressure chamber 1 is connected to an oil discharge pipeline. An air source inlet pipeline is also provided on the high-pressure chamber 1, and gas is introduced into the high-pressure chamber 1 through the air source inlet pipeline to adjust the pressure inside the high-pressure chamber 1. The pressure-reducing check valve 3 is installed on the oil discharge pipeline, and a throttle stop valve 4 is installed on the oil discharge pipeline downstream of the pressure-reducing check valve 3. The fuel return tank 5 is installed on the oil discharge pipeline downstream of the throttle stop valve 4, and the fuel return tank 5 is used for temporarily storing atmospheric-pressure fuel.

[0027] The fuel treatment device for high-pressure testing of fuel nozzles is used for discharging and recovering the fuel after fuel nozzle tests in a high-pressure environment. It is installed at the very end of the high-pressure test platform for fuel nozzles in a high-pressure environment. The fuel after the test enters the pressure-reducing check valve 3 along the oil discharge pipeline. Through the special effect that the pressure-reducing check valve 3 allows liquid fluid to pass through unidirectionally, it can effectively block the reverse flow of high-pressure air and fuel, thus eliminating the unnecessary safety hazards caused by high-pressure air entering the sealed fuel return tank 5 along the oil discharge pipeline and avoiding the risk of fuel leakage. Moreover, during the test process, under the urging of the fuel with a certain pressure, the pressure-reducing check valve 3 automatically works under pressure to reduce the high-pressure fuel to atmospheric pressure and stabilize it. The pressure-reducing check valve 3 is a throttling element with a variable local resistance, that is, by changing the throttling area, the flow rate and the kinetic energy of the fluid are changed, resulting in different pressure losses, so as to achieve the purpose of pressure reduction. The fuel depressurized by the pressure-reducing check valve 3 is then effectively flow-regulated from a large flow rate to a small flow rate through the throttle stop valve 4 to avoid the impact of the large-flow fuel on the fuel return tank 5 and relieve the flow velocity of the fuel, so as to achieve the purpose of recovering the high-pressure fuel as atmospheric-pressure small-flow fuel into the fuel return tank 5, and it can work automatically under the urging of high pressure without manual urging, greatly improving the test efficiency and the test safety factor.

[0028] In one embodiment, an exhaust pipeline is connected to the oil discharge pipeline between the pressure-reducing check valve 3 and the high-pressure chamber 1, and the exhaust pipeline is used for discharging the pressurizing gas in the high-pressure chamber 1.

[0029] Specifically, an oil-gas separation device 6 is installed on the exhaust pipeline. The gas-side outlet of the oil-gas separation device 6 is communicated with the downstream exhaust pipeline. By setting the oil-gas separation device 6, the fuel and pressurized gas entering the exhaust pipeline are separated, and then only the gas is discharged through the exhaust pipeline, avoiding the exhaust system being entered due to excessive fuel accumulation in the exhaust pipeline, resulting in fuel accumulation in the exhaust tank and causing fuel leakage. The safety performance of the fuel nozzle high-pressure test fuel treatment device is improved.

[0030] Further, in order to reduce the exhaust noise, a silencing tower 8 is also installed on the exhaust pipeline. A bleed branch is communicated with the exhaust pipeline upstream of the silencing tower 8. By setting the silencing tower 8 to weaken the noise at the outlet end of the exhaust pipeline, when the air pressure in the exhaust pipeline is too high, the bleed branch is opened to perform emergency exhaust using the bleed branch. In order to facilitate the control of the opening and closing of the bleed branch, a control ball valve 7 is installed on the bleed branch.

[0031] In this embodiment, the pressure-reducing check valve 3 is a direct-acting pressure-reducing valve. The direct-acting pressure-reducing valve can effectively adjust the pressure within the pressure range, and the outlet pressure can be ensured to be at atmospheric pressure.

[0032] In one embodiment, an intermediate fuel tank 2 is installed on the oil drain pipeline between the high-pressure chamber 1 and the pressure-reducing check valve 3. The intermediate fuel tank 2 serves to accumulate high-pressure fuel. Generally, during the test, the high-pressure fuel flowing through the nozzle accumulates in the intermediate fuel tank 2 under the action of gravity, and then enters the pressure-reducing check valve 3 along the oil drain pipeline. In order to facilitate the accumulation of high-pressure fuel in the intermediate fuel tank 2 under the action of gravity, the intermediate fuel tank 2 is arranged at the bottom of the high-pressure chamber 1. Since the intermediate fuel tank 2 is only used for transfer, its volume does not need to be set too large. The volume of the intermediate fuel tank 2 is smaller than that of the high-pressure chamber 1, which can reduce the floor area.

[0033] The fuel discharge and recovery device after the high-pressure test of the fuel nozzle under high-pressure environment provided by this embodiment is arranged at the very end of the high-pressure test platform of the fuel nozzle. Among them, the intermediate fuel tank 2 has a small volume and serves to accumulate high-pressure fuel. Generally, during the test, the high-pressure fuel flowing through the nozzle accumulates in the intermediate fuel tank 2 under the urging of gravity, and then the fuel flows along the high-pressure pipeline to the pressure-reducing check valve 3. The direct-acting pressure-reducing valve selected for the pressure-reducing check valve 3 is equipped with a check valve that only allows liquid fluid to pass through, which can effectively block the reverse flow of high-pressure air and fuel, thus eliminating the unnecessary safety hazards caused by high-pressure air entering the sealed return fuel tank 5 along the pipeline. During the test process, under the urging of the fuel with a certain pressure, the pressure-reducing check valve 3 automatically operates under pressure to reduce the pressure of the high-pressure fuel to normal pressure and stabilize it. The pressure-reducing check valve 3 is a throttling element with variable local resistance, that is, by changing the throttling area, the flow velocity and the kinetic energy of the fluid are changed, resulting in different pressure losses, so as to achieve the purpose of pressure reduction. The direct-acting pressure-reducing valve can effectively adjust the pressure within the pressure range, and the outlet pressure can be ensured to be in the normal pressure state. The fuel after being depressurized by the pressure-reducing valve is then effectively adjusted to a small flow rate through the throttle stop valve 4 for the large-flow fuel, avoiding the impact of the large-flow fuel on the return fuel tank 5 and alleviating the flow velocity of the fuel, so as to achieve the purpose of recovering the high-pressure fuel into the return fuel tank 5 as normal-pressure small-flow fuel, and it can automatically operate under the urging of high pressure without manual urging, greatly improving the test efficiency and the test safety factor.

[0034] In the fuel nozzle high-pressure test fuel treatment device provided by this embodiment, the pressure-reducing check valve 3 is set to only allow fluid to pass through, blocking the inflow of high-pressure air and preventing the high-pressure air from impacting the sealed return fuel tank 5; and the check valve included in the valve is a flow-blocking structure, which can also prevent the fuel in the return fuel tank 5 and the pipeline from flowing back to the high-pressure chamber 1. After the fuel nozzle high-pressure test fuel treatment device provided by this embodiment is installed behind the high-pressure chamber 1 device, it can not only achieve the phenomenon that there is no external spraying of high-pressure fuel and air, save time and effort in automatic oil return, and be safe in operation, but also prevent the fuel in the return fuel tank 5 from flowing back to the intermediate fuel tank 2 or the high-pressure chamber 1, improving the test safety factor.

[0035] By installing a direct-acting pressure reducing valve as the pressure reducing check valve 3 on the drain pipeline, and selecting a model that only allows liquid media to pass through, the pressure reducing valve blocks the entry of high-pressure air into the return fuel tank 5 in case the fuel in the high-pressure chamber 1 and the intermediate fuel tank 2 is emptied during the test process, avoiding the impact of high-pressure air on the sealed return fuel tank 5 and improving the safety factor. Moreover, the direct-acting pressure reducing valve can also reduce the fuel pressure from the high-pressure chamber 1 flowing into the return fuel tank 5 to atmospheric pressure through the pressure reducing valve, enabling it to flow smoothly into the return fuel tank 5. And the valve is equipped with a check valve inside, which only allows liquid media to flow unidirectionally, preventing the fuel from backflow due to excessive pressure and ensuring that the fuel in the return fuel tank 5 does not flow back into the high-pressure chamber 1. By improving the manual valve at the output end of the high-pressure chamber 1 to an automatic valve, during the test process, the monitoring of the drain fuel tank capacity, manpower, and test time are reduced, greatly shortening the test time, improving the work efficiency, and avoiding the impact of high-pressure fuel and gas on people or the open environment when operating the manual valve, thus improving the test safety factor. By setting the throttle stop valve 4, through the automatic adjustment of the flow area inside the throttle stop valve 4, it can effectively control the large-flow fuel flowing from the high-pressure chamber 1 along the pipeline into the return fuel tank 5, reducing the large-flow fuel to small-flow fuel, enabling the fuel to flow slowly into the return fuel tank 5, avoiding large-flow impact, and eliminating potential test safety hazards. By setting the return fuel tank 5, compared with the original discharge device that only has a simple discharge function, it effectively saves energy, eliminates the work of energy waste, and improves the test efficiency.

[0036] In a second aspect, the present invention also provides a high-pressure test platform for fuel nozzles, which has the fuel nozzle test fuel treatment device of the present invention. Since the high-pressure test platform for fuel nozzles includes the fuel nozzle test fuel treatment device. After the main equipment of the fuel nozzle test fuel treatment device is installed behind the high-pressure chamber 1, it can not only achieve effective fuel discharge and recovery, with safe operation, automatic work, being fast and synchronous, but also prevent the fuel in the return fuel tank 5 from flowing back into the high-pressure chamber 1, ensuring the test safety and reducing the test energy cost.

[0037] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A high-pressure test fuel treatment device for a fuel nozzle, characterized in that, Installed on the high-pressure test platform of the fuel nozzle for discharging and recovering the fuel after multi-fuel nozzle tests, the fuel treatment device includes: A high-pressure chamber (1) whose interior is adapted to output high-pressure fuel after fuel nozzle tests, and an oil discharge pipeline is connected to the output end of the high-pressure chamber (1); A pressure-reducing check valve (3) installed on the oil discharge pipeline, and a throttle stop valve (4) is installed on the oil discharge pipeline downstream of the pressure-reducing check valve (3); A return oil tank (5) installed on the oil discharge pipeline downstream of the throttle stop valve (4), and the return oil tank (5) is used for temporarily storing normal-pressure fuel.

2. The high-pressure test fuel treatment device for a fuel nozzle according to claim 1, wherein An exhaust pipeline is connected to the oil discharge pipeline between the pressure-reducing check valve (3) and the high-pressure chamber (1).

3. The high-pressure test fuel treatment device for a fuel nozzle according to claim 2, characterized in that, An oil-gas separation device (6) is installed on the exhaust pipeline, and the gas-side outlet of the oil-gas separation device (6) is connected to the downstream exhaust pipeline.

4. The high-pressure test fuel treatment device for a fuel nozzle according to claim 2 or 3, characterized in that A silencing tower (8) is installed on the exhaust pipeline, and a venting branch is connected to the exhaust pipeline upstream of the silencing tower (8).

5. The high-pressure test fuel treatment device for a fuel nozzle according to claim 4, characterized in that A control ball valve (7) is installed on the venting branch.

6. The high-pressure test fuel treatment device for a fuel nozzle according to any one of claims 1 to 3, characterized in that, The pressure-reducing check valve (3) is a direct-acting pressure-reducing valve.

7. The high-pressure test fuel treatment device for a fuel nozzle according to any one of claims 1 to 3, characterized in that, An intermediate oil tank (2) is installed on the oil discharge pipeline between the high-pressure chamber (1) and the pressure-reducing check valve (3).

8. The fuel treatment device for high-pressure testing of a fuel nozzle according to claim 7, characterized in that, The intermediate oil tank (2) is provided at the bottom of the high-pressure chamber (1).

9. The fuel nozzle high-pressure test fuel treatment device according to claim 7, characterized in that, The volume of the intermediate oil tank (2) is smaller than the volume of the high-pressure chamber (1).

10. A high-pressure test platform for fuel nozzles, characterized in that, A fuel nozzle high-pressure test fuel treatment device according to any one of claims 1 to 9.

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