A flare igniter test device and intake flow rate determination method

Abstract

The application discloses a torch igniter test device and an air inlet flow rate determination method, and relates to the field of igniter test equipment. The torch igniter test device comprises an adapter section, an air inlet system, an air outlet system, an adjusting assembly and a measurement and control system, and the adapter section is provided with a test cavity; the measurement and control system comprises a first pressure detection member and a second pressure detection member, the first pressure detection member is arranged at an inlet section of the test cavity, and the second pressure detection member is arranged at an outlet section of the test cavity, so as to detect pressure data of the inlet and outlet sections of the test cavity; when a pressure parameter deviates from a preset pressure range, the adjusting assembly is controlled by a controller to adjust the flow rate of air inlet of an air inlet flow path and the flow rate of air outlet of an air outlet flow path, so as to reduce pressure fluctuation of the test cavity in a test working condition and improve the stability of a test environment pressure state. The application can improve test state accuracy, is favorable for reducing energy consumption, has fast pressure state adjusting speed and high adjusting sensitivity.

Description

Technical Field

[0001] This invention relates to the field of igniter testing equipment, specifically to a torch igniter testing device and a method for determining the inlet flow rate. Background Technology

[0002] The most critical capability of an aero-engine is its ignition performance, generally employing two methods: direct ignition and indirect ignition. Direct ignition involves using an electric nozzle and a fuel injector, or a combination of both, to directly inject and ignite fuel within the aero-engine's combustion chamber. The electric nozzle directly provides ignition energy to the air-fuel mixture. A common indirect ignition method uses a flare igniter to provide a flame to the combustion chamber, igniting the air-fuel mixture and thus testing the combustion chamber's ignition. The flare igniter is a small, independent combustion chamber containing a nozzle, an electric nozzle, and a housing. The flame provided by the flare igniter has a significantly greater penetration distance and energy than that of the electric nozzle, enabling faster and more reliable ignition of the aero-engine under more severe conditions.

[0003] Existing flare ignition test equipment typically uses a common gas source or a high-power air compressor for gas supply, or employs an ejector for negative pressure suction to simulate the pressure conditions of a high-altitude environment. On the one hand, these methods suffer from high energy consumption; on the other hand, during actual testing, these methods experience large pressure fluctuations and poor pressure stability. Because the temperature, pressure, and other operating conditions of the test equipment are correlated, unstable pressure conditions easily lead to slow pressure adjustment speed and low adjustment sensitivity on the test bench. Summary of the Invention

[0004] To address the technical problems mentioned above, the present invention provides a torch igniter testing device, comprising:

[0005] The transition section has a test chamber;

[0006] The air intake system has at least two air intake paths;

[0007] The exhaust system has at least two exhaust flow paths;

[0008] An adjustment component is used to adjust the flow rate of air entering the test chamber through any air intake path per unit time, and to adjust the flow rate of air exiting the test chamber through any exhaust path per unit time.

[0009] The measurement and control system comprises a first pressure detection component and at least one second pressure detection component, the first pressure detection component is installed at the inlet section of the test cavity, the second pressure detection component is installed at the outlet section of the test cavity to detect the pressure data of the inlet and outlet sections of the test cavity; the measurement and control system further comprises a controller, the controller is used to acquire a pressure parameter, when the pressure parameter deviates from a preset pressure range, the controller controls the adjusting assembly to adjust the flow capacity of the inlet gas flow path and the flow capacity of the exhaust gas flow path.

[0010] As a preferred technical solution, the air inlet system comprises an air inlet driving component, an air inlet main flow path, a first air inlet flow path and a second air inlet flow path, the air inlet driving component is adapted to communicate with the external atmosphere, the air inlet driving component is installed at the air inlet side of the air inlet main flow path, the air inlet sides of the first air inlet flow path and the second air inlet flow path are connected in parallel to the air outlet side of the air inlet main flow path, and the air outlet sides of the first air inlet flow path and the second air inlet flow path are connected to the test cavity respectively.

[0011] The adjusting assembly comprises a first electric valve and a second electric valve, the first electric valve is installed on the air inlet main flow path, and the second electric valve is installed on the second air inlet flow path.

[0012] As a preferred technical solution, the torch igniter test device further comprises a fuel system, the fuel system comprises a gas guide flow path and an oil tank, the oil tank is installed on the gas guide flow path, one end of the gas guide flow path is connected to the air inlet main flow path, and the other end of the gas guide flow path is connected to the oil tank.

[0013] As a preferred technical solution, the adjusting assembly further comprises a first adjusting valve, a second adjusting valve and a third adjusting valve, the first adjusting valve and the second adjusting valve are installed on the air inlet main flow path, the second adjusting valve is arranged on the downstream side of the first adjusting valve, the third adjusting valve is installed on the gas guide flow path, and the air inlet side of the gas guide flow path is arranged between the first adjusting valve and the second adjusting valve.

[0014] As a preferred technical solution, the fuel system further comprises a fuel temperature controller and an oil inlet flow path, the fuel temperature controller is installed on the oil inlet flow path, one end of the oil inlet flow path is adapted to be connected to a fuel supply device, and the other end of the oil inlet flow path is connected to the oil tank.

[0015] As a preferred technical solution, the air inlet system further comprises a drying machine and a refrigerating machine, the drying machine and the refrigerating machine are arranged on the air inlet main flow path, the drying machine is arranged on the downstream side of the air inlet driving component, and the refrigerating machine is arranged on the downstream side of the drying machine.

[0016] As a preferred technical scheme, the exhaust system comprises an exhaust driving member, a first exhaust flow path and a second exhaust flow path, the exhaust driving member is installed on the first exhaust flow path, an intake side of the first exhaust flow path is communicated with the test cavity, an intake side of the second exhaust flow path is communicated on a path of the first exhaust flow path on an upstream side of the exhaust driving member, an exhaust side of the first exhaust flow path and an exhaust side of the second exhaust flow path are respectively communicated with the external atmosphere.

[0017] The adjusting assembly further comprises a third electric valve and a fourth electric valve, the third electric valve is installed on the first exhaust flow path, the third electric valve is located on the upstream side of the exhaust driving member, and the fourth electric valve is installed on the second exhaust flow path.

[0018] As a preferred technical scheme, the exhaust system further comprises a third exhaust flow path, an intake side of the third exhaust flow path is communicated with the first exhaust flow path, and the intake side of the third exhaust flow path is arranged on the upstream side of the third electric valve, and an exhaust side of the third exhaust flow path is adapted to be communicated with the external atmosphere.

[0019] The adjusting assembly further comprises a fifth electric valve, and the fifth electric valve is installed on the third exhaust flow path.

[0020] As a preferred technical scheme, the exhaust system further comprises an exhaust heat exchanger, an oil removal filter and a silencing device which are installed on the first exhaust flow path in sequence, the exhaust heat exchanger and the oil removal filter are arranged on the upstream side of the third electric valve, and the silencing device is arranged on the downstream side of the third electric valve.

[0021] As a preferred technical scheme, the torch igniter test device further comprises a pressure stabilizing assembly, the pressure stabilizing assembly comprises a first pressure stabilizing tank and a second pressure stabilizing tank, the first pressure stabilizing tank is arranged on the downstream side of the intake driving member, the first pressure stabilizing tank is arranged on the upstream side of the first electric valve, the second pressure stabilizing tank is arranged on the downstream side of the test cavity, and the second pressure stabilizing tank is arranged on the upstream side of the third electric valve.

[0022] The application further provides an intake flow rate determination method, comprising:

[0023] Obtaining the intake cross-sectional dimension of each intake flow path which is communicated with the test cavity in the switching section;

[0024] Determining the intake flow rate of each intake flow path according to the preset pressure range, the preset temperature range and the intake cross-sectional dimension of each intake flow path;

[0025] Determining the maximum intake flow rate of the switching section in the intake stage according to the intake flow rate of each intake flow path.

[0026] The technical scheme provided by the present application has the following advantages.

[0027] The torch igniter test device provided by the present application comprises an adapter section, an air inlet system, an air outlet system, an adjusting assembly and a measurement and control system, the adapter section has a test cavity; the air inlet system has at least two air inlet flow paths, the air outlet system has at least two air outlet flow paths; the adjusting assembly can adjust the flow rate of air inlet of any air inlet flow path to the test cavity per unit time and the flow rate of air outlet of the test cavity to any air outlet flow path per unit time; the measurement and control system comprises a first pressure detection element and a second pressure detection element, the first pressure detection element is installed at the inlet section of the test cavity, the second pressure detection element is installed at the outlet section of the test cavity, so as to detect the pressure parameters of the inlet and outlet sections of the test cavity; the measurement and control system further comprises a controller, the controller is used to acquire the pressure parameters, and when the pressure parameters deviate from a preset pressure range, the controller controls the adjusting assembly to adjust the flow rate of air inlet of the air inlet flow path and the flow rate of air outlet of the air outlet flow path.

[0028] The torch igniter test device has the following advantages: the first pressure detection element is installed at the inlet section of the test cavity, and the second pressure detection element is installed at the outlet section of the test cavity, so as to detect the pressure data of the inlet and outlet sections of the test cavity; when the pressure parameters deviate from a preset pressure range, the controller controls the adjusting assembly to adjust the flow rate of air inlet of the air inlet flow path and the flow rate of air outlet of the air outlet flow path, so as to reduce the pressure fluctuation of the test cavity in the test working condition, improve the stability of the pressure state of the test environment, improve the test state accuracy, and reduce the energy consumption, the pressure state adjusting speed is fast, and the adjusting sensitivity is high. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme in the specific embodiments or prior art of the present application, the drawings needed in the specific embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any inventive labor.

[0030] Figure 1 The structural schematic diagram of the torch igniter test device provided by the present application is shown in the figure.

[0031] Figure 2 The structural schematic diagram of the torch igniter test device provided by the present application is shown in the figure.

[0032] Figure 3 The structural schematic diagram of the torch igniter test device provided by the present application is shown in the figure.

[0033] Figure 4 The structural schematic diagram of the fuel system in the torch igniter test device provided by the present application is shown in the figure.

[0034] Figure 5 A structural schematic diagram of a flare igniter test device provided by the present application is shown in the figure;

[0035] Explanation of reference numerals:

[0036] 1-adapter section; A-first inlet; B-second inlet; C-igniter outlet;

[0037] 21-gas inlet driving member; 22-gas inlet main flow path; 23-first gas inlet flow path; 24-second gas inlet flow path; 25-dryer; 26-cooling machine;

[0038] 31-gas outlet driving member; 32-first gas outlet flow path; 33-second gas outlet flow path; 34-third gas outlet flow path; 35-gas outlet heat exchanger; 36-oil removal filter; 37-silencing device;

[0039] 41-first electric valve; 42-second electric valve; 43-third electric valve; 44-fourth electric valve; 45-fifth electric valve; 46-first regulating valve; 47-second regulating valve; 48-third regulating valve;

[0040] 51-first pressure detecting member; 52-second pressure detecting member;

[0041] 61-first pressure stabilizing tank; 62-second pressure stabilizing tank;

[0042] 71-gas guiding flow path; 72-oil tank; 73-fuel temperature controller; 74-oil inlet flow path. DETAILED DESCRIPTION

[0043] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0044] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer” and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms “first” and “second” are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0047] Embodiment

[0048] The present embodiment provides a torch igniter test device, referring to Figure 1 and Figure 2 , comprising a test piece adapter 1, an air inlet system, an air outlet system, an adjusting assembly and a measurement and control system, the adapter 1 has a test cavity; the adapter 1 is provided with an inlet section and an outlet section, the inlet section is provided with a first inlet A and a second inlet B to communicate with the air inlet system, and the adapter 1 is provided with a torch outlet C below, which is used to discharge the combustion flame.

[0049] In an exemplary embodiment, the air inlet system has two air inlet flow paths communicating with the test cavity, referring to Figures 1 to 3 , the air inlet system comprises an air inlet driving member 21, an air inlet main flow path 22, a first air inlet flow path 23 and a second air inlet flow path 24, the first air inlet flow path 23 and the second air inlet flow path 24 can respectively communicate with the test cavity; the air inlet driving member 21 is adapted to communicate with the external atmosphere, the air inlet driving member 21 is installed on the air inlet side of the air inlet main flow path 22, the air inlet sides of the first air inlet flow path 23 and the second air inlet flow path 24 are connected in parallel to the air outlet side of the air inlet main flow path 22, and the air outlet sides of the first air inlet flow path 23 and the second air inlet flow path 24 are respectively connected to the test cavity. The air outlet side of the first air inlet flow path 23 is connected to the first inlet A, and the air outlet side of the second air inlet flow path 24 is connected to the second inlet B.

[0050] In an exemplary embodiment, the air outlet system has two air outlet flow paths; referring to Figure 1The exhaust system comprises an exhaust driving member 31, a first exhaust flow path 32 and a second exhaust flow path 33. The exhaust driving member 31 is installed on the first exhaust flow path 32. The intake side of the first exhaust flow path 32 is communicated with the test cavity. The intake side of the second exhaust flow path 33 is communicated on the path of the first exhaust flow path 32 on the upstream side of the exhaust driving member 31. The exhaust side of the first exhaust flow path 32 and the exhaust side of the second exhaust flow path 33 are respectively communicated with the external atmosphere. The intake side of the first exhaust flow path 32 is connected with the outlet section. The exhaust system can reach the low pressure condition required by the test state by sucking the test cavity through the adapter section 1.

[0051] In the embodiment, referring to Figure 1 and Figure 5 , the adjusting assembly can adjust the flow capacity of any intake flow path towards the test cavity per unit time and the flow capacity of the test cavity towards any exhaust flow path per unit time. The adjusting assembly comprises a first electric valve 41 and a second electric valve 42. The first electric valve 41 is installed on the main intake flow path 22. The second electric valve 42 is installed on the second intake flow path 24. In the specific operation process, when the intake system and the exhaust system are in flow operation, only the first electric valve 41 is opened, the main intake flow path 22 and the second intake flow path 24 are communicated with the intake driving member 21 and the test cavity. The air flow is introduced towards the test cavity through the second intake flow path 24. The flow capacity of the intake air flow can be adjusted by adjusting the opening degree of the first electric valve 41. When the first electric valve 41 and the second electric valve 42 are opened, the main intake flow path 22, the first intake flow path 23 and the second intake flow path 24 are communicated with the intake driving member 21 and the test cavity. The air flow is introduced towards the test cavity through the parallel first intake flow path 23 and the second intake flow path 24. The flow capacity of the intake air flow can be adjusted by adjusting the opening degrees of the first electric valve 41 and the second electric valve 42. The electric valve adopts a valve body with valve position adjusting function. Of course, more intake flow paths and more electric valves can be arranged to adjust the intake operation of the intake system.

[0052] Referring to Figure 1The adjusting assembly further comprises a third electric valve 43 and a fourth electric valve 44, the third electric valve 43 is installed on the first exhaust flow path 32 and located on the upstream side of the exhaust driving member 31, and the fourth electric valve 44 is installed on the second exhaust flow path 33. In the specific operation process, when the intake system and the exhaust system are in circulation, the first exhaust flow path 32 is communicated with the test chamber by opening only the third electric valve 43, and the airflow in the test chamber is guided out by the first exhaust flow path 32; when the third electric valve 43 and the fourth electric valve 44 are opened, the first exhaust flow path 32 is communicated with the test chamber, the first exhaust flow path 32 is communicated with the second exhaust flow path 33, the second exhaust flow path 33 is used for communicating the first exhaust flow path 32 with the external atmosphere, the airflow in the test chamber is guided out by the first exhaust flow path 32, at the same time, with the exhaust of the first exhaust flow path 32, the airflow in the second exhaust flow path 33 can be attracted into the first exhaust flow path 32 and mixed with the airflow discharged from the test chamber, and the external atmosphere can enter the second exhaust flow path 33 to continuously participate in the airflow mixing.

[0053] In the embodiment, referring to Figure 1 and Figure 5 , the measurement and control system comprises a first pressure detection member 51 and a second pressure detection member 52, the first pressure detection member 51 is installed on the inlet section of the test chamber, and the second pressure detection member 52 is installed on the outlet section of the test chamber to detect the pressure data of the inlet and outlet sections of the test chamber; the measurement and control system further comprises a controller, the controller is used for acquiring the pressure parameter, and when the pressure parameter deviates from the preset pressure range, the controller controls the adjusting assembly to adjust the circulation quantity of the intake airflow and the circulation quantity of the exhaust airflow.

[0054] In some embodiments, referring to Figure 3 , the inlet section of the adapter section 1 is arranged with a total pressure measuring point Pt1 and a static pressure measuring point Ps1; the outlet section of the adapter section 1 is arranged with a total pressure measuring point Pt2 and a static pressure measuring point Ps2, and the specific measuring point positions are shown in Figure 3 . The test pressure working condition of the torch igniter test device provided in the embodiment is the inlet total pressure Pt1 to the maximum pressure value, and the expected pressure difference △P is required to be less than the maximum pressure value minus Pt1, wherein △P = Pt1-Pt2. During the test, the inlet section total pressure Pt1 and the static pressure Ps1 are monitored by the first pressure detection member 51, the outlet section total pressure Pt2 and the static pressure Ps2 are monitored by the second pressure detection member 52, and the controller acquires the two total pressures and the two static pressures. In the embodiment, the dynamic pressure of the inlet section of the inlet section is equal to the total pressure minus the static pressure, and the air flow velocity of the inlet section can be judged by the dynamic pressure parameter. In the specific embodiment, the first pressure detection member 51 is arranged at the first inlet A to monitor the pressure working condition of the first inlet A.

[0055] When the pressure parameter deviates from the preset pressure range, i.e., the desired pressure difference ΔP, the control adjustment assembly adjusts the flow capacity of the intake air flow path and the flow capacity of the exhaust air flow path; in a specific embodiment, the flow capacities of the intake and exhaust air are adjusted in combination with the following pressure state table.

[0056] Table 1 Pressure state table

[0057] State Pt1 △P = Pt1 - Pt2 CASE1 greater than target value less than target value CASE2 greater than target value greater than target value CASE3 less than target value less than target value CASE4 less than target value greater than target value

[0058] For the adjustment mode of the pressure state CASE1: when Pt1 is greater than the target value, the opening of the first electric valve 41 is reduced; at the same time, the opening of the second electric valve 42 is increased, which reduces the pressure at Pt1 and increases the pressure at Pt2, and the change amplitudes of Pt2 and Pt1 are different. When ΔP is less than the target value, i.e., the pressure at Pt2 is also relatively large at this time, the following measures can be taken: increasing the frequency of the exhaust driving member 31, increasing the suction capacity of the exhaust driving member 31 to reduce the pressure at Pt2, and making ΔP close to the target value; increasing the opening of the third electric valve 43 to reduce the pressure at Pt2, which can be used as a coarse adjustment valve; increasing the opening of the fourth electric valve 44 to reduce the pressure at Pt2, which can be used as a fine adjustment valve. Through the above methods, the pressure value at Pt1 can be reduced to the target value, and the pressure value at Pt2 can be reduced, so that ΔP reaches the target value.

[0059] For the adjustment mode of the pressure state CASE2: when Pt1 is greater than the target value, the opening of the first electric valve 41 is reduced; at the same time, the opening of the second electric valve 42 is increased, which reduces the pressure at Pt1 and increases the pressure at Pt2, and the change amplitudes of Pt2 and Pt1 are different. When ΔP is greater than the target value, i.e., the pressure at Pt2 is relatively small at this time, the following measures can be taken: reducing the frequency of the exhaust driving member 31, increasing the suction capacity of the exhaust driving member 31 to increase the pressure at Pt2, and making ΔP close to the target value; reducing the opening of the third electric valve 43 to increase the pressure at Pt2, which can be used as a coarse adjustment valve; reducing the opening of the fourth electric valve 44 to increase the pressure at Pt2, which can be used as a fine adjustment valve. Through the above methods, the pressure value at Pt1 can be reduced to the target value, and the pressure value at Pt2 can be increased, so that ΔP reaches the target value.

[0060] For the adjustment mode of pressure state CASE3: when Pt1 is less than the target value, then increase the opening of the first electric valve 41; at the same time, decrease the opening of the second electric valve 42, to increase the pressure at Pt1 and decrease the pressure at Pt2, and the change amplitude of Pt2 and Pt1 is different. When △P is less than the target value, i.e., the pressure at Pt2 is also large at this time, the following measures can be taken: increase the frequency of the exhaust driving member 31, the suction capacity of the exhaust driving member 31 increases, the pressure at Pt2 decreases, and △P approaches the target value; increase the opening of DF3 to decrease Pt2, which can be used as a coarse adjustment valve; increase the opening of DF4 to decrease Pt2, which can be used as a fine adjustment valve. Through the above mode, the pressure value at Pt1 can be increased to reach the target value, and the pressure value at Pt2 can be decreased, so that △P reaches the target value.

[0061] For the adjustment mode of pressure state CASE4: when Pt1 is less than the target value, then increase the opening of the first electric valve 41; at the same time, decrease the opening of the second electric valve 42, to increase the pressure at Pt1 and decrease the pressure at Pt2, and the change amplitude of Pt2 and Pt1 is different. When △P is less than the target value, i.e., the pressure at Pt2 is also large at this time, the following measures can be taken: increase the frequency of the exhaust driving member 31, the suction capacity of the exhaust driving member 31 increases, the pressure at Pt2 decreases, and △P approaches the target value; increase the opening of DF3 to decrease Pt2, which can be used as a coarse adjustment valve; increase the opening of DF4 to decrease Pt2, which can be used as a fine adjustment valve. Through the above mode, the pressure value at Pt1 can be increased to reach the target value, and the pressure value at Pt2 can be decreased, so that △P reaches the target value.

[0062] In some embodiments, Pt2 and Ps2 can be arranged far away from the jet of the test piece by increasing the length or volume of the torch igniter test adapter, so that the pressure measuring point is more stable and has smaller fluctuations; in addition, the second pressure stabilizing tank 62 upstream of the exhaust driving member 31 can also reduce the pressure fluctuation effect of the negative pressure pipeline.

[0063] In specific embodiments, for the pressure measuring points Pt1 and Pt2, single-point or multi-point total pressure probes can be used; preferably, Pt1 and Pt2 use multi-point total pressure probes.

[0064] In some embodiments, referring to Figure 1, the adjusting assembly further comprises a first adjusting valve 46 and a second adjusting valve 47, the first adjusting valve 46 and the second adjusting valve 47 are installed on the main air inlet flow path 22, and the second adjusting valve 47 is arranged on the downstream side of the first adjusting valve 46. The air flow is coarsely adjusted by the first electric valve 41 and the second electric valve 42; the air flow is finely adjusted by the first adjusting valve 46 and the second adjusting valve 47, and the design of multi-stage adjustment can make the pressure condition in the test state more accurate, so as to further reduce the pressure fluctuation of the test cavity in the test condition, improve the stability of the test environment pressure state, and then improve the test precision.

[0065] As a further embodiment, refer to Figure 1 and Figure 4 , the torch igniter test device further comprises a fuel system, the fuel system comprises a gas guide flow path 71, an oil tank 72, a fuel temperature controller 73 and an oil inlet flow path 74, the oil tank 72 is installed on the gas guide flow path 71, one end of the gas guide flow path 71 is communicated with the main air inlet flow path 22, and the other end of the gas guide flow path 71 is communicated with the oil tank 72; the fuel temperature controller 73 is installed on the oil inlet flow path 74, one end of the oil inlet flow path 74 is adapted to be communicated with the oil supply equipment, and the other end of the oil inlet flow path 74 is communicated with the oil tank 72. The air inlet system is communicated through the gas guide flow path 71, so that the air flow of the air inlet system enters the oil tank 72, drives the fuel in the oil tank 72 to enter the oil inlet flow path 74, and ensures the oil supply capacity of the fuel system.

[0066] In some embodiments, the fuel temperature controller 73 is provided with a heating / cooling mechanism to control the temperature of the oil supply from the oil tank 72 to the oil inlet flow path 74, so that the fuel temperature in the oil tank 72 meets the expected demand, and the air flow introduced by the gas guide flow path 71 can pressurize the fuel supply in the oil tank 72 to the test cavity.

[0067] Refer to Figure 1 and Figure 4 , the adjusting assembly further comprises a third adjusting valve 48, the third adjusting valve 48 is installed on the gas guide flow path 71, and the air inlet side of the gas guide flow path 71 is arranged between the first adjusting valve 46 and the second adjusting valve 47. The third adjusting valve 48 adjusts the air pressure to the required pressure value of the test fuel supply. After the third adjusting valve 48 is opened, part of the air flow driven by the air inlet driving member 21 in the main air inlet flow path 22 can enter the gas guide flow path 71, thereby pressurizing the fuel in the oil tank 72. It can reduce the oil pump for driving fuel supply and reduce cost. The pressure regulating process of the third adjusting valve 48 is more accurate and faster than the traditional oil pump regulation.

[0068] Of course, on the basis of the above, the oil inlet flow path 74 can be provided with an oil pump to drive the fuel in the oil tank 72 into the test piece as a combustible. The air flow through the oil pump and the gas guide flow path 71 pressurizes the fuel together to ensure sufficient fuel supply capacity.

[0069] In some embodiments, referring to Figure 1 The intake system further comprises a dryer 25 and a cold air machine 26, which are arranged on the intake main flow path 22. The dryer 25 is arranged on the downstream side of the intake driving member 21, and the cold air machine 26 is arranged on the downstream side of the dryer 25. The dryer 25 is used to dry the air flow of the intake air output by the intake driving member 21, and the cold air machine 26 is used to pre-cool the compressed air of the intake air to keep it at room temperature. In a specific embodiment, the cold air machine 26 can cool the compressed air of the intake air to -40℃ to meet the low-temperature working condition requirements of the test piece. The refrigeration part of the cold air machine 26 uses a refrigeration system heat exchanger for refrigeration, such as Freon compression refrigeration. The dried compressed air passes through the refrigeration system heat exchanger to quickly freeze the compressed air to the process temperature, and a cold air flow is generated through the nozzle. In a specific embodiment, the cold air machine 26 arranged on the intake main flow path 22 is arranged on the downstream side of the intake main flow path 22 communicated by the air guide flow path 71 to avoid the cooling air flow of the cold air machine 26 participating in the adjustment of the fuel temperature.

[0070] In the above description, the adjusting valve is arranged as a pressure reducing valve to reduce the pressure of the compressed air at the outlet of the intake driving member 21. On the one hand, it can provide a stable pressure for the oil tank 72 of the fuel system, and on the other hand, it can keep the air pressure at the inlet of the cold air machine 26 at a low state, which is convenient for adjusting the test working condition. The flow of air is adjusted by the electric valve to adjust the air pressure.

[0071] In an embodiment, the intake driving member 21 is arranged as an air compressor, and the exhaust driving member 31 is arranged as a vacuum pump. The compressed air is provided by the air compressor, and then cooled by the cold air machine 26. The vacuum pump forms a negative pressure torch igniter test device for the adapter section 1. The vacuum pump can adjust its suction capacity through a frequency converter. The torch igniter test device provided in this embodiment integrates all the equipment from air supply to air exhaust in the same test device, realizing the miniaturization and integration of the test device.

[0072] As a preferred technical solution, referring to Figure 1The exhaust system further comprises a third exhaust flow path 34, an intake side of the third exhaust flow path 34 is arranged in communication with the first exhaust flow path 32, the intake side of the third exhaust flow path 34 is arranged at the upstream side of the third electric valve 43, and an exhaust side of the third exhaust flow path 34 is adapted to communicate with the external atmosphere; the adjusting assembly further comprises a fifth electric valve 45, which is installed on the third exhaust flow path 34. The first exhaust flow path 32 serves as a main exhaust flow path, and in a specific embodiment, the exhaust driving member 31 is a vacuum pump with relatively small power. The third exhaust flow path 34 can be used to assist the first exhaust flow path 32 in exhaust. The exhaust driving member 31 can suck the airflow of the first exhaust flow path 32 to continuously discharge the gas in the test chamber. When the gas in the test chamber is excessively discharged, the fifth electric valve 45 is opened to make the first exhaust flow path 32 and the third exhaust flow path 34 jointly participate in the exhaust operation, better match the pressure working condition, and make the exhaust system meet the exhaust suction demand of the test chamber.

[0073] As a preferred technical solution, referring to Figure 1 The exhaust system further comprises an exhaust heat exchanger 35, an oil removal filter 36 and a silencing device 37 installed on the first exhaust flow path 32 in sequence. The exhaust heat exchanger 35 and the oil removal filter 36 are arranged at the upstream side of the third electric valve 43, and the silencing device 37 is arranged at the downstream side of the third electric valve 43. The exhaust heat exchanger 35 is used to cool the high-temperature exhaust gas of the exhaust gas, and can adopt a water cooling mode. The oil removal filter 36 is used to filter the oil-containing gas in the exhaust airflow, and remove the oil, impurities and the like therein to prevent damage to the downstream devices such as the exhaust driving member 31.

[0074] As a further embodiment, referring to Figure 1 The torch igniter test device further comprises a pressure stabilizing assembly, which comprises a first pressure stabilizing tank 61 and a second pressure stabilizing tank 62. The first pressure stabilizing tank 61 is arranged at the downstream side of the intake driving member 21, and the first pressure stabilizing tank 61 is arranged at the upstream side of the first electric valve 41. The second pressure stabilizing tank 62 is arranged at the downstream side of the test chamber, and the second pressure stabilizing tank 62 is arranged at the upstream side of the third electric valve 43. The first pressure stabilizing tank 61 stabilizes the intake process of the intake system, and the second pressure stabilizing tank 62 stabilizes the exhaust process of the exhaust system. The first pressure stabilizing tank 61 and the second pressure stabilizing tank 62 can stabilize the low-pressure working condition of the test state, and can meet the high-altitude and ground ignition test demand of the commonly used torch igniter. Of course, the pressure stabilizing tank can have the effect of cooling the airflow, which is beneficial to reduce the working temperature of the airflow in the flow. In a specific embodiment, the size of the adapter section is generally small, and the pressure stabilizing effect of the second pressure stabilizing tank before the exhaust driving member plays an important role. The second pressure stabilizing tank can effectively reduce the pressure fluctuation amplitude of Pt2 and Ps2 in the test adapter section during the test, thereby reducing the fluctuation of the pressure difference ΔP, which is beneficial to the adjustment and stabilization of the test state.

[0075] The torch igniter test device provided by the embodiment is installed at the inlet section of the test cavity through the first pressure detection member 51, and the second pressure detection member 52 is installed at the outlet section of the test cavity to detect the pressure data of the inlet and outlet sections of the test cavity; when the pressure parameter deviates from the preset pressure range, the controller controls the adjusting assembly to adjust the flow capacity of the inlet gas flow path and the flow capacity of the exhaust gas flow path, so as to reduce the pressure fluctuation of the test cavity in the test working condition, improve the stability of the pressure state of the test environment, improve the test state precision, and be beneficial to reducing the energy consumption; the torch igniter test device provided by the application has the advantages of fast pressure state adjusting speed and high adjusting sensitivity.

[0076] The existing test equipment using a vacuum suction system is matched and constructed according to the demand of high-altitude ignition of a single-head combustion chamber test piece / multi-head test piece, the air compressor power is usually 100kW-300kW, the power scale is large, the test energy consumption is high, and the construction cost is high.

[0077] The existing test equipment using an ejector has low ejecting efficiency, high construction cost and operation and maintenance cost, and a large amount of high-pressure compressed air is needed to suck the adapter section, so that the low pressure working condition required by the test is achieved. The required gas source flow is 1-1.5kg / s, the pressure is 0.8-1.0MPa, or higher, and the air compressor power of the gas source is usually more than 600kW, the power scale is large, the test energy consumption is high.

[0078] Compared with the above two test equipment, the test gas range of the torch ignition test piece can be accurately evaluated, a smaller power gas source equipment such as an air compressor and a suction equipment can be selected, the air compressor can have a power of 20-30kW, the suction equipment can use a vacuum pump, the power of the whole test equipment is 1 / 3-1 / 10 of the above two test equipment, the equipment power can be greatly reduced, the equipment size is also greatly reduced, so that the whole equipment size is smaller, the land occupation area is reduced, and further, the construction cost and operation and maintenance cost of the whole test equipment can be significantly reduced.

[0079] The torch igniter test device provided by the embodiment establishes a simulation test on the adapter section 1 of the test piece, the adjusting part adopts a combination of an electric valve and an adjusting valve, and the multi-stage adjusting realizes the fine adjustment of the key parameters such as the inlet pressure, temperature and inlet and outlet differential pressure of the adapter section 1 in the test piece, and the first pressure stabilizing tank 61 is added in the inlet gas system to stabilize the pressure, so that the test state is more accurate and stable.

[0080] The torch igniter test device provided by the embodiment has the following gas path working modes:

[0081] The compressed air generated by the air intake driving member is stabilized by the first pressure stabilizing tank, dehumidified by the dehumidifier, and preliminarily cooled by the cooler, and the air flow passing through the second regulating valve enters the cold air machine after being depressurized to form cooling air / low-temperature air, which can reach the low-temperature air flow temperature required by the igniter test and remain stable. The air flow and pressure of the intake air are accurately adjusted by the first electric valve and the second electric valve.

[0082] The first exhaust flow path is sucked by the exhaust driving member, and the required negative pressure for the test is adjusted. The air temperature after the adapter section is relatively high, and contains unburned fuel, particles and the like. The air is cooled by the heat exchanger and then filtered by the filter before entering the exhaust driving member to prevent the high-temperature impurity-containing air from damaging the exhaust driving member. The exhaust driving member achieves the effect of adjusting the negative pressure of the igniter test by sucking negative pressure. In the case of large or small suction flow, or high or low suction pressure, the third electric valve can be used for coarse adjustment, and the fourth electric valve can be used for fine adjustment of the suction pressure and flow.

[0083] Among them, the method for adjusting the pressure difference △P of the test piece: after the inlet negative pressure and temperature of the test piece are adjusted and stabilized, the required pressure difference design value is input. If the △P deviates from the required range of the design, the second electric valve can be adjusted to fine-tune the differential pressure.

[0084] In the ground working condition, the third electric valve is closed, and the air after the adapter section is directly discharged into the atmosphere through the pipeline where the fifth electric valve is located.

[0085] The torch igniter test device provided by the embodiment can solve the problems of poor stability of the torch igniter test pressure state, high energy consumption of the equipment, slow test state adjustment, and low automation degree.

[0086] The embodiment further provides an air intake flow determination method, comprising:

[0087] Obtaining the air intake cross-sectional size of each air intake flow path connected to the test cavity in the adapter section 1;

[0088] Determining the air intake flow rate of each air intake flow path according to the preset pressure range, the preset temperature range of the test cavity, and the air intake cross-sectional size of each air intake flow path;

[0089] Determining the maximum air intake flow of the adapter section 1 in the air intake stage according to the air intake flow rate of each air intake flow path.

[0090] In a specific embodiment, the cross-sectional dimension of the inlet section and the outlet section of the test piece air inlet flow path for the flow of air is obtained by measuring means, and for an exemplary embodiment, the sum of the air flow of the first inlet A and the second inlet B to the test cavity is the overall air inlet flow of the test piece, and the air inlet cross-sectional dimension of the first inlet A and the second inlet B is measured by measuring means; according to the working condition of the adapter section 1 in the test stage, the pressure range and the temperature range of the first inlet A and the second inlet B at the test cavity are set; and according to the air inlet cross-sectional dimension of the first inlet A and the second inlet B and the pressure range and the temperature range thereof, the flow velocity range of the first air inlet flow path 23 and the second air inlet flow path 24 is calculated by using Bernoulli equation; and according to the flow range of the first inlet A, the second inlet B and the fire exit C, the maximum gas flow of the three is approximately estimated by Bernoulli equation. The maximum gas flow of the three is used as a reference basis for the selection of the air inlet driving piece 21 and the exhaust driving piece 31.

[0091] In a specific embodiment, the flow velocity at the first inlet A is between 60-80 m / s, the second inlet B is set to be in the order of 10 m / s, and the flow velocity of the fire exit C is between 4-20 m / s.

[0092] In a specific embodiment, the air inlet driving piece 21 is set to be an air compressor, wherein the output of the air compressor is equal to the sum of 2 times the air inlet flow of the test piece, the air flow of the fuel pressurization and the air amount of the differential pressure regulation, the air flow of the fuel pressurization is set to be 15 g / s, and the air amount of the differential pressure regulation is set to be 5 g / s, which can be configured according to 1 times the flow of the first inlet A.

[0093] In a specific embodiment, the exhaust driving piece 31 is set to be a vacuum pump, and considering factors such as resistance loss in the flow path, the flow of the vacuum pump is selected according to the volume flow; and the air pumping amount of the vacuum pump is set to be 2-4 times the volume flow of the test piece.

[0094] The air inlet flow determination method provided in the embodiment determines the air flow of the flare igniter in the working condition range through numerical simulation and calculation, thereby providing reasonable reference basis for the selection of the equipment used by the device, such as the air compressor, the vacuum pump, the pipeline and its accessories, and fully meeting the requirements of the ignition performance test of the flare igniter test piece.

[0095] The embodiment starts from the similarity simulation of the flare igniter, calculates the flow parameter of the flare igniter test piece itself according to the working condition of the combustion chamber performance design, thereby providing support data for the selection of the main equipment of the flare igniter ignition performance test device, and the flow parameter is also the basis for the flow similarity of the flare igniter ignition performance test, and the data can effectively improve the reliability of the test results of the flare igniter ignition performance test device, so that the ignition boundary is closer to the ignition boundary of the whole machine test device.

[0096] Obviously, the above-mentioned embodiments are only examples for clearly illustrating the present application, and are not intended to limit the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, it is not necessary and also impossible to enumerate all the embodiments. The obvious changes or variations derived from the above description are still within the protection scope of the present application.

Claims

1. A flare igniter test apparatus, characterized by, The torch igniter test device comprises: a transition section (1) having a test cavity; an air intake system having at least two air intake flow paths; an air exhaust system having at least two air exhaust flow paths; an adjusting assembly for adjusting the flow rate of air intake of any air intake flow path into the test cavity per unit time and adjusting the flow rate of air exhaust of the test cavity into any air exhaust flow path per unit time; a measurement and control system comprising a first pressure detection member (51) and at least one second pressure detection member (52), the first pressure detection member (51) being installed at the inlet section of the test cavity, and the second pressure detection member (52) being installed at the outlet section of the test cavity to detect the pressure data of the inlet and outlet sections of the test cavity; the measurement and control system further comprises a controller for acquiring pressure parameters, and when the pressure parameters deviate from the preset pressure range, the controller controls the adjusting assembly to adjust the flow rate of air intake of the air intake flow path and the flow rate of air exhaust of the air exhaust flow path. The air intake system comprises an air intake driving member (21), an air intake main flow path (22), a first air intake flow path (23) and a second air intake flow path (24), the air intake driving member (21) being adapted to communicate with the external atmosphere, the air intake driving member (21) being installed at the air intake side of the air intake main flow path (22), the air intake sides of the first air intake flow path (23) and the second air intake flow path (24) being connected in parallel to the air exhaust side of the air intake main flow path (22), and the air exhaust sides of the first air intake flow path (23) and the second air intake flow path (24) being connected to the test cavity, respectively. The adjusting assembly comprises a first electrically operated valve (41) and a second electrically operated valve (42), the first electrically operated valve (41) being installed on the air intake main flow path (22), and the second electrically operated valve (42) being installed on the second air intake flow path (24).

2. The torch igniter test apparatus of claim 1, wherein The torch igniter test device further comprises a fuel system, the fuel system comprising a gas guide flow path (71) and a fuel tank (72), the fuel tank (72) being installed on the gas guide flow path (71), one end of the gas guide flow path (71) being connected to the air intake main flow path (22), and the other end of the gas guide flow path (71) being connected to the fuel tank (72).

3. The torch igniter test apparatus of claim 2, wherein The adjusting assembly further comprises a first adjusting valve (46), a second adjusting valve (47) and a third adjusting valve (48), the first adjusting valve (46) and the second adjusting valve (47) being installed on the air intake main flow path (22), the second adjusting valve (47) being arranged at the downstream side of the first adjusting valve (46), and the third adjusting valve (48) being installed on the gas guide flow path (71), the air intake side of the gas guide flow path (71) being arranged between the first adjusting valve (46) and the second adjusting valve (47).

4. The torch igniter test apparatus of claim 2, wherein The fuel system further comprises a fuel temperature controller (73) and an oil inlet flow path (74), the fuel temperature controller (73) being installed on the oil inlet flow path (74), one end of the oil inlet flow path (74) being adapted to be connected to a fuel supply device, and the other end of the oil inlet flow path (74) being connected to the fuel tank (72).

5. The torch igniter test apparatus of claim 1, wherein The intake system further comprises a dryer (25) and a cooler (26), the dryer (25) and the cooler (26) are arranged on the intake main flow path (22), the dryer (25) is arranged on the downstream side of the intake driving member (21), and the cooler (26) is arranged on the downstream side of the dryer (25).

6. The torch igniter test apparatus of claim 1, wherein The exhaust system comprises an exhaust driving member (31), a first exhaust flow path (32) and a second exhaust flow path (33), the exhaust driving member (31) is installed on the first exhaust flow path (32), the intake side of the first exhaust flow path (32) is communicated with the test cavity, the intake side of the second exhaust flow path (33) is communicated on the path of the first exhaust flow path (32) on the upstream side of the exhaust driving member (31), and the exhaust side of the first exhaust flow path (32) and the exhaust side of the second exhaust flow path (33) are respectively communicated with the external atmosphere. The adjusting assembly further comprises a third electric valve (43) and a fourth electric valve (44), the third electric valve (43) is installed on the first exhaust flow path (32), and the third electric valve (43) is located on the upstream side of the exhaust driving member (31), and the fourth electric valve (44) is installed on the second exhaust flow path (33).

7. The flare igniter test apparatus of claim 6, wherein, The exhaust system further comprises a third exhaust flow path (34), the intake side of the third exhaust flow path (34) is communicated with the first exhaust flow path (32), and the intake side of the third exhaust flow path (34) is arranged on the upstream side of the third electric valve (43); the exhaust side of the third exhaust flow path (34) is adapted to be communicated with the external atmosphere. The adjusting assembly further comprises a fifth electric valve (45), and the fifth electric valve (45) is installed on the third exhaust flow path (34).

8. The torch igniter test apparatus of claim 6, wherein, The exhaust system further comprises an exhaust heat exchanger (35), an oil removal filter (36) and a silencing device (37) installed on the first exhaust flow path (32) in sequence, the exhaust heat exchanger (35) and the oil removal filter (36) are arranged on the upstream side of the third electric valve (43), and the silencing device (37) is arranged on the downstream side of the third electric valve (43).

9. The torch igniter test apparatus of claim 6, wherein, The torch igniter test device further comprises a pressure stabilizing assembly, the pressure stabilizing assembly comprises a first pressure stabilizing tank (61) and a second pressure stabilizing tank (62), the first pressure stabilizing tank (61) is arranged on the downstream side of the intake driving member (21), the first pressure stabilizing tank (61) is arranged on the upstream side of the first electric valve (41), the second pressure stabilizing tank (62) is arranged on the downstream side of the test cavity, and the second pressure stabilizing tank (62) is arranged on the upstream side of the third electric valve (43).

10. A method of determining the flow rate of air into a flare igniter test apparatus as claimed in any one of claims 1 to 9, characterised by, It comprises: Obtaining the intake cross-sectional size of each intake flow path connected with the test cavity in the switching section (1); According to the preset pressure range, the preset temperature range and the intake cross-sectional size of each intake flow path, the intake flow rate of each intake flow path is determined; According to the intake flow rate of each intake flow path, the maximum intake flow rate of the switching section (1) in the intake stage is determined.

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