Supersonic engine test bench thrust measurement exhaust device and use method thereof

Abstract

A supersonic engine test bench thrust measurement exhaust device includes an engine thrust measurement bench, an exhaust system, an exhaust gas treatment system, and a high-altitude simulation cabin; the high-altitude simulation cabin is a sealed shell structure, the engine thrust measurement bench is fixedly installed in the high-altitude simulation cabin, and the test engine is installed on the engine thrust measurement bench; one end of the exhaust system passes through the shell surface of the high-altitude simulation cabin and is fixedly installed inside the high-altitude simulation cabin, and the other end is fixedly connected to the exhaust gas treatment system. The supersonic engine test bench thrust measurement exhaust device of the present invention has an engine thrust measurement bench that realizes the measurement of engine thrust and has a simple structure. At the same time, it realizes the treatment of the engine test bench exhaust gas, so that the gas discharged from the outlet of the alkaline spray tower meets the national pollutant emission standards. By setting up a silencer, the exhaust of the exhaust system is silenced and noise-reduced, thereby avoiding noise pollution.

Description

Technical Field

[0001] The present invention relates to the technical field of engine testing, in particular to a supersonic engine test bench thrust measurement exhaust device and a use method thereof. Background Art

[0002] Engine testing and measurement technology is a crucial component of solid propulsion technology, and thrust measurement is a key parameter that must be measured during engine testing and measurement. Studying engine thrust requires numerous repeated tests, which are impossible to perform during flight testing. The main reasons are that flight testing is costly, time-consuming, yields little information, is risky, and requires significant manpower. This necessitates engine ground tests. Ground testing involves statically testing a system on the ground under specific conditions and environmental requirements to obtain information describing the system's various performance indicators, thereby addressing key issues in the engine thrust testing process. However, existing technology lacks mature technology for engine thrust testing equipment.

[0003] Secondly, the main components of the exhaust gas from engine test benches for aerospace engines such as turbofan engines and solid ramjet engines are carbon dioxide and hydrogen sulfide, and they also contain a certain amount of particulate matter, mainly boron trioxide and magnesium oxide. If the exhaust gas from the test bench is directly discharged into the atmosphere, it will greatly pollute the atmosphere and cause acid rain. At the same time, the emitted particulate matter will form pollutants such as PM10 and PM2.5 to pollute the atmosphere, which is extremely environmentally unfriendly. In the existing technology, there is no mature and effective method for exhaust gas treatment from engine test benches for aerospace engines such as turbofan engines and solid ramjet engines.

[0004] Furthermore, the primary source of noise pollution in engine test benches and their surroundings comes from aerodynamic noise. This noise source, present only during test bench testing, is generated by high-pressure, high-speed, high-temperature compressed air and fuel gas flowing through metal or other enclosures or being released into the atmosphere, generating noise levels exceeding 130 dB(A). Noise is unwanted sound. The human ear can hear sounds with frequencies between 20 Hz and 20,000 Hz, which are directly perceptible to humans. Noise outside this frequency range is a silent killer and is therefore a target for noise control. Currently, different countries regulate noise control within different sound pressure levels based on their specific environments. According to China's Environmental Protection Law, the permitted noise pressure level for newly built enterprises operating eight hours per day is 85 dB(A), and for one hour per day, it is 94 dB(A). For engine test benches, where the sound power exceeds 130 dB(A), the duration of the noise is short, and the worksite is located far from urban areas or residential areas, the primary goal of noise control is to ensure that noise levels in the test bench workplace meet regulatory standards and minimize noise impact on the environment outside the test bench.

[0005] There is no mature and effective technical means in the prior art for the method of silencing and reducing the noise generated by the test bench. The applicant previously applied for CN203910262U, proposing a muffler, which has a certain effect on the silencing and noise reduction of the test bench. However, the staggered arrangement of the thick sheet components and thin sheet components of the muffler requires a large floor space. On the one hand, when the exhaust flow of the engine test bench is small, in order to ensure the quality of noise reduction, it is still necessary to establish multiple thick sheet components and thin sheet components (each layer of silencer sheet components requires at least 2 thick sheet components of silencers and 2 thin sheet components of silencers, plus a thick sheet component of a half-sheet muffler and a thin sheet component of a half-sheet muffler), which leads to a significant increase in cost. On the other hand, when the floor area of ​​the engine test bench where the silencer equipment can be installed is small and does not allow the staggered arrangement of thick sheet components and thin sheet components of the muffler as described in the patent application on each layer, removing any silencer sheet will lead to a decrease in the silencer ability. Summary of the Invention

[0006] The technical problem solved by the present invention is to overcome the deficiencies of the prior art and provide a supersonic engine test bench thrust measurement exhaust device and a method for using the same.

[0007] The technical solution of the present invention is: a supersonic engine test bench thrust measurement exhaust device, including an engine thrust measurement bench, an exhaust system, an exhaust gas treatment system and a high-altitude simulation cabin; the high-altitude simulation cabin is a sealed shell structure, the engine thrust measurement bench is fixedly installed in the high-altitude simulation cabin, and the test engine is installed on the engine thrust measurement bench; one end of the exhaust system passes through the shell surface of the high-altitude simulation cabin and is fixedly installed inside the high-altitude simulation cabin, and the other end is fixedly connected to the exhaust gas treatment system.

[0008] The advantages of the present invention compared with the prior art are:

[0009] 1. The supersonic engine test bench thrust measurement exhaust device of the present invention and the use method thereof, wherein the engine thrust measurement bench realizes the measurement of engine thrust and has a simple structure.

[0010] 2. The supersonic engine test bench thrust measurement exhaust device of the present invention and its use method, wherein the engine thrust measurement bench cleverly suspends the moving frame on the fixed frame through spring sheets and uses a force sensor to measure the engine thrust, is simple and easy to use.

[0011] 3. The supersonic engine test bench thrust measurement exhaust device and its use method of the present invention are provided with a measurement section bracket in the engine thrust measurement bench to ensure that the measurement section used to measure the intake parameters of the test engine is coaxial with the engine, which not only ensures the accuracy of the engine intake simulation, but also improves the accuracy of the engine intake parameter measurement.

[0012] 4. The thrust measurement exhaust device for a supersonic engine test bench of the present invention and its method of use have a relatively large overall rigidity of the dynamic frame of the engine thrust measurement bench. To ensure the dynamic performance of the test bench, the design includes a reasonable distribution of force-bearing elements, an application of the principle of equal structural strength, and an optimized design by removing the non-stressed parts of the material to reduce the mass of the dynamic frame.

[0013] 5. The supersonic engine test bench thrust measurement exhaust device and its use method of the present invention has a horizontal base provided on its fixed frame in the engine thrust measurement bench to improve the bearing capacity of the entire fixed frame.

[0014] 6. The supersonic engine test bench thrust measurement exhaust device and its use method of the present invention have a locking state set in the engine thrust measurement bench, so that when the engine is not tested or when the engine is installed before testing, the movable frame and the fixed frame remain in a fixed state, thereby extending the service life of the engine thrust measurement bench. At the same time, it avoids the application of irreversible external force to the spring leaf or even damage to the spring leaf when the engine and its related test pieces are installed in the movable frame in its own state (not in the locking state), thereby ensuring the accuracy of the engine thrust measurement bench.

[0015] 7. The supersonic engine test bench thrust measurement exhaust device and its use method of the present invention adopt a gantry-type engine mounting frame in the engine thrust measurement bench to suspend the engine, thereby improving the measurement accuracy of the engine thrust. The front and rear joints are adjustable, which greatly expands the application range of the engine mounting frame and solves the problem of setting up one engine mounting frame for each engine in the past.

[0016] 8. The supersonic engine test bench thrust measurement exhaust device and its use method of the present invention employs a standard force sensor in its engine thrust measurement bench to determine the error of the working force sensor and statically calibrate it, thereby generating a set of high-precision known "simulated thrusts" to calibrate the force measurement system. Because it replicates the deformation and force conditions of the test state, it eliminates most system errors caused by deformation, installation, temperature, constraints, etc. during the test, thereby reducing thrust measurement uncertainty.

[0017] 9. The supersonic engine test bench thrust measurement exhaust device and its use method of the present invention, in which the engine thrust measurement bench is calibrated and plotted with characteristic curves of the standard force sensor and the working force sensor, the force value output by the working force sensor is accurately determined by the characteristic curve, thereby avoiding the calibration of the working force sensor for each test, with low cost and high efficiency.

[0018] 10. The supersonic engine test bench thrust measurement exhaust device and its use method of the present invention realize the treatment of the engine test bench exhaust gas by providing a closed circulating water pool and two sets of alkaline spray stations, so that the gas discharged from the outlet of the alkaline spray tower meets the national pollutant emission standards. The two sets of parallel alkaline spray stations are provided to divide the engine test bench exhaust gas into two paths for alkaline spraying, thereby reducing the flow rate of the engine test bench exhaust gas through the alkaline spray tower, making the alkaline spray process more sufficient, and at the same time reducing the workload of each alkaline spray tower, further fully performing the alkaline spraying. At the same time, by providing a silencer tower, the exhaust of the exhaust system is silenced and noise reduced, avoiding noise pollution.

[0019] 11. The supersonic engine test bench thrust measurement exhaust device of the present invention and the method of using the same, in the process of silencing, creatively proposes a thin and thick combination silencer flat sheet, and realizes that thin silencer sheets and thick silencer sheets are respectively set on two sides of an air flow channel. Under the premise of ensuring the silencer capability, the number of silencer sheets used is reduced (according to the prior art, each layer of silencer sheet assembly requires at least 2 thick sheet assemblies of silencers and 2 thin sheet assemblies of silencers, plus a thick sheet assembly of half a silencer and a thin sheet assembly of half a silencer. The silencer sheet assembly proposed by the present invention is equivalent to only 1 thick sheet assembly of silencer and 1 thin sheet assembly of silencer, plus a thick sheet assembly of half a silencer and a thin sheet assembly of half a silencer). It occupies a small area (applicable to large-flow test benches as well as small-flow engine test benches), has a wide range of applications, and also greatly reduces costs.

[0020] 12. The supersonic engine test bench thrust measurement exhaust device of the present invention and its use method, during the silencing process, provides a guide plate on the silencing plate to guide the gas entering the air flow channel, making the gas flow uniform, further improving the silencing effect.

[0021] 13. The supersonic engine test bench thrust measurement exhaust device and its use method of the present invention, and its engine test bench exhaust gas treatment system, creatively set up a two-layer spray system in each alkaline spray tower to make the spraying more thorough.

[0022] 14. The supersonic engine test bench thrust measurement exhaust device and its use method of the present invention, in which the engine test bench exhaust treatment system is provided with a filler layer filled with ceramic material in each layer of the spray system, greatly improving the treatment capacity of the alkaline spray tower.

[0023] 15. The supersonic engine test bench thrust measurement exhaust device and its use method of the present invention, in which the engine test bench exhaust gas treatment system is provided with a circulating water pool, wastewater treatment equipment and a closed cooling tower, realizes the reuse of alkaline circulating water, and greatly reduces the test cost.

[0024] 16. The supersonic engine test bench thrust measurement exhaust device and its use method of the present invention add a spray system in the silencer tower to further degrade the exhaust gas, thereby further improving the exhaust gas treatment capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of the thrust measurement exhaust device of the supersonic engine test bench of the present invention.

[0026] Figure 2 This is a structural front view of the engine thrust measurement bench in the supersonic engine test bench thrust measurement exhaust device of the present invention.

[0027] Figure 3 for Figure 2 Magnified view of part A in the middle.

[0028] Figure 4 for Figure 2 Magnified view of part B in the middle.

[0029] Figure 5 This is a top view of the engine thrust measurement bench structure in the supersonic engine test bench thrust measurement exhaust device of the present invention.

[0030] Figure 6 for Figure 5 Magnified view of middle C.

[0031] Figure 7 The present invention is a schematic structural diagram of a measuring section bracket of an engine thrust measurement bench in a supersonic engine test bench thrust measurement exhaust device.

[0032] Figure 8 for Figure 7 Magnified view of section D in the middle.

[0033] Figure 9 for Figure 7 Magnified view of middle E.

[0034] Figure 10 This is a structural front view of the engine mounting frame of the engine thrust measurement bench in the supersonic engine test bench thrust measurement exhaust device of the present invention.

[0035] Figure 11 The present invention provides a structural side view of an engine mounting frame of an engine thrust measurement bench in a supersonic engine test bench thrust measurement exhaust device.

[0036] Figure 12 The present invention is a schematic structural diagram of an engine mounting top frame of an engine thrust measurement bench in a supersonic engine test bench thrust measurement exhaust device.

[0037] Figure 13 The diagram is a schematic diagram of the principle of calibrating the force sensor of the engine thrust measurement bench in the supersonic engine test bench thrust measurement exhaust device of the present invention.

[0038] Figure 14 The present invention is a schematic structural diagram of an alkali solution spray tower of an engine test bench tail gas treatment system in a supersonic engine test bench thrust measurement exhaust device.

[0039] Figure 15 This is a schematic structural diagram of a three-layer silencer assembly of an engine test bench exhaust treatment system in a supersonic engine test bench thrust measurement exhaust device of the present invention.

[0040] Figure 16 This is a structural schematic diagram of a single-layer silencer assembly of an engine test bench exhaust treatment system in a supersonic engine test bench thrust measurement exhaust device of the present invention.

[0041] Figure 17 This is a schematic structural diagram of a semi-thin silencer sheet of an engine test bench exhaust gas treatment system in a supersonic engine test bench thrust measurement exhaust device of the present invention.

[0042] Figure 18 This is a schematic structural diagram of a half-thickness silencer plate of an engine test bench exhaust treatment system in a supersonic engine test bench thrust measurement exhaust device of the present invention.

[0043] Figure 19 This is a schematic structural diagram of a thin-and-thick combined silencer sheet in an engine test bench exhaust treatment system in a supersonic engine test bench thrust measurement exhaust device of the present invention. DETAILED DESCRIPTION

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0045] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "abutted" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0046] A supersonic engine, in particular a test bench thrust measurement exhaust device for an aerospace engine such as a turbofan engine and a solid ramjet engine, includes an engine thrust measurement bench, an exhaust system 700, an exhaust gas treatment system and a high-altitude simulation cabin 900; the high-altitude simulation cabin 900 is a sealed shell structure, and its appearance is not limited and can be a rectangular parallelepiped, an ellipsoid, etc.; the engine thrust measurement bench is fixedly installed in the high-altitude simulation cabin 900, and the test engine 1 is installed on the engine thrust measurement bench; one end of the exhaust system 700 passes through the shell surface of the high-altitude simulation cabin 900 and is fixedly installed inside the high-altitude simulation cabin 900, and the other end is fixedly connected to the exhaust gas treatment system.

[0047] The engine thrust measurement test bench includes a fixed frame 100, a movable frame 200 and a loading measurement device; the loading measurement device includes a spring sheet, a loading mechanism 330 and a working force sensor 350; the movable frame 200 is suspended on the fixed frame 100 by the spring sheet, the loading mechanism 330 is fixedly mounted on the fixed frame 100, and the two ends of the working force sensor 350 are respectively connected to the fixed frame 100 and the movable frame 200.

[0048] The fixed frame includes a base 110, a front mounting seat 120, a loading mechanism mounting seat 130, a first fixed frame spring piece mounting seat 140, a fixed frame working force sensor mounting seat 150, a rear mounting seat 160 and a second fixed frame spring piece mounting seat 170; the base 110 is a rectangular parallelepiped structure, along the length direction of the base 110, the front mounting seat 120 and the rear mounting seat 160 are fixedly mounted on the front and rear ends of the base 110 respectively, and the rear mounting seat 160 includes a horizontal plate and a vertical plate, and the horizontal plate and the vertical plate form an "L" shape; the loading mechanism mounting seat 130 is fixedly mounted on the front mounting seat 120, the first fixed frame spring piece mounting seat 140 includes a first right fixed frame spring piece mounting seat 141 and a first left fixed frame spring piece mounting seat 142, the first right fixed frame spring piece mounting seat 141 and the first left fixed frame spring piece mounting seat 142 are fixedly mounted on the front end of the base 110 and are respectively located on both sides of the front mounting seat 120; the fixed frame working force sensor mounting seat 150 Fixedly mounted on the base 110 and located on the center line along the length direction of the base 110; the second fixed frame spring piece mounting seat 170 includes a second right fixed frame spring piece mounting seat 171 and a second left fixed frame spring piece mounting seat 172, and the second right fixed frame spring piece mounting seat 171 and the second left fixed frame spring piece mounting seat 172 are fixedly mounted on the rear end of the base 110 and are respectively located on both sides of the rear mounting seat 160.

[0049] The movable frame 200 includes a movable frame body 210, a first movable frame spring sheet mounting seat 220, a movable frame working force sensor mounting seat 230, a second movable frame spring sheet mounting seat 240 and a movable frame standard force sensor mounting seat 250. The movable frame body 210 includes a right movable frame body 211, a left movable frame body 212 and a movable frame connecting plate 260. The right movable frame body 211 and the left movable frame body 212 have the same structure, are both rectangular structures and are parallel to the base 110. The center lines of the right movable frame body 211 and the left movable frame body 212 along the length direction are parallel to the center line of the base 110 along the length direction. The movable frame connecting plates 260 are symmetrically arranged relative to the center line of the base 110 along the length direction, and the plurality of movable frame connecting plates 260 fix the right movable frame body 211 and the left movable frame body 212 to each other; along the length direction of the movable frame body 210, the movable frame standard force sensor mounting seat 250 is fixedly mounted on the front bottom surface of the movable frame body 210; the first movable frame spring leaf mounting seat 220 includes a first right movable frame spring leaf mounting seat and a first left movable frame spring leaf mounting seat, and the first right movable frame spring leaf mounting seat and the first left movable frame spring leaf mounting seat are respectively fixedly mounted on the right movable frame body 2 11 and the front end bottom surface of the left movable frame body 212 and are respectively located on both sides of the movable frame standard force sensor mounting seat 250; the movable frame working force sensor mounting seat 230 is fixedly installed on the bottom of a movable frame connecting plate 260 of the movable frame body 210 and is located on the center line along the length direction of the movable frame body 210; the second movable frame spring leaf mounting seat 240 includes a second right movable frame spring leaf mounting seat and a second left movable frame spring leaf mounting seat, and the second right movable frame spring leaf mounting seat and the second left movable frame spring leaf mounting seat are respectively fixedly mounted on the rear end bottom surfaces of the right movable frame body 211 and the left movable frame body 212.

[0050] The loading and measuring device includes a first spring piece 310, a second spring piece 320, a loading mechanism 330, a standard force sensor 340 and a working force sensor 350; the first spring piece 310 includes a first right spring piece 311 and a first left spring piece 312, the two ends of the first right spring piece 311 are respectively fixedly connected to the first right fixed frame spring piece mounting seat 141 and the first right movable frame spring piece mounting seat, the first left spring piece 312 The two ends are respectively fixedly connected to the first left fixed frame spring piece mounting seat 142 and the first left movable frame spring piece mounting seat; the second spring piece 320 includes a second right spring piece 321 and a second left spring piece 322, the two ends of the second right spring piece 321 are respectively fixedly connected to the second right fixed frame spring piece mounting seat 171 and the second right movable frame spring piece mounting seat, and the two ends of the second left spring piece 322 are respectively fixedly connected to the second left fixed frame spring piece mounting seat 172 and the second left movable frame spring piece mounting seat; the loading mechanism 330 is fixedly mounted on the horizontal plate of the front mounting seat 120, and the standard force sensor 340 is fixedly mounted on the movable frame body 210 On the front baffle, the loading mechanism 330 and the standard force sensor 340 are coaxially arranged and parallel to the center line of the base 110 along the length direction; the two ends of the working force sensor 350 are respectively fixedly connected to the fixed frame working force sensor mounting seat 150 and the movable frame working force sensor mounting seat 230, and the working force sensor 350 is coaxially arranged with the loading mechanism 330 and the standard force sensor 340; the loading mechanism 330 includes a servo motor, a motor power supply, a hydraulic loading device, and a calibration cylinder. The motor power supply is electrically connected to the servo motor, and the servo motor is connected to the hydraulic loading device and the calibration cylinder in turn, and the piston of the calibration cylinder is connected to the standard force sensor.

[0051] The engine thrust measurement rig includes a measuring section bracket for supporting the measuring section, the measuring section bracket includes a first measuring section bracket 410 and a second measuring section bracket 420 arranged coaxially, the first measuring section bracket 410 and the second measuring section bracket 420 have the same structure and are both fixedly mounted on the top surface of the dynamic frame body 210; the measuring section bracket includes a measuring section bracket bracket 411, a measuring section bracket lower ring 412, a measuring section bracket upper ring 413, a measuring section bracket positioning mechanism 41 4 and locking device 415; the bottom surface of the measuring section bracket bracket 411 is fixedly connected to the top surface of the dynamic frame body 210, the measuring section bracket lower ring 412 and the measuring section bracket upper ring 413 are both semicircular structures, and the measuring section bracket lower ring 412 and the measuring section bracket upper ring 413 are connected to form a circle; the measuring section bracket lower ring 412 and the measuring section bracket bracket 411 are integrally formed; the measuring section bracket positioning mechanism 414 is 3, and has the same structure, which is used to position the measurement subject The measuring section of the intake parameters of the engine 1, the three measuring section bracket positioning mechanisms 414 are evenly distributed in the radial direction of the circle formed after being connected along the measuring section bracket lower ring 412 and the measuring section bracket upper ring 413, wherein one measuring section bracket positioning mechanism 414 is set on the top of the measuring section bracket upper ring 413, and the remaining two measuring section bracket positioning mechanisms 414 are set on the measuring section bracket lower ring 412; the measuring section bracket positioning mechanism 414 includes a positioning mechanism nut 4141, a positioning mechanism locking nut The nut 4142 and the positioning mechanism screw 4143, the positioning mechanism screw 4143 passes through the measuring section bracket lower ring 412 or the measuring section bracket upper ring 413, the positioning mechanism locking nut 4142 is sleeved on the positioning mechanism screw 4143 and placed on the outside of the measuring section bracket lower ring 412 or the measuring section bracket upper ring 413 to abut against the measuring section bracket lower ring 412 or the measuring section bracket upper ring 413, for locking the positioning mechanism screw 4143, the positioning mechanism nut 4141 is sleeved on the positioning mechanism screw 4143 and abuts against the positioning mechanism locking nut 4142;There are two locking devices 415 with the same structure, which are used to fix the lower ring 412 of the measuring section bracket and the upper ring 413 of the measuring section bracket. The two locking devices 415 are set at the connecting ends of the lower ring 412 of the measuring section bracket and the upper ring 413 of the measuring section bracket. The locking devices 415 include an upper locking plate 4151, a lower locking plate 4152, a locking bolt 4153 and a locking nut 4154. The upper locking plate 4151 is fixedly connected to the front end surface of the upper ring 413 of the measuring section bracket. The lower surface of the upper locking plate 4151 overlaps with the lower surface of the measuring section bracket upper ring 413. The lower locking plate 4152 is fixedly connected to the front end surface of the measuring section bracket lower ring 412. The upper surface of the lower locking plate 4152 overlaps with the upper surface of the measuring section bracket lower ring 412. The locking bolt 4153 passes through the lower locking plate 4152 and the upper locking plate 4151 in sequence. The locking nut 4154 cooperates with the locking bolt 4153 and abuts against the upper locking plate 4151.

[0052] The engine thrust measurement test bench includes a locking device, which includes a tightening screw 510, a tightening baffle 520 and a tightening nut 530. The tightening screw 510 passes through the rear end baffle of the dynamic frame body 210, the tightening baffle 520, the vertical plate of the rear mounting seat 160 and the tightening nut 530 in sequence. The tightening nut 530 cooperates with the tightening screw 510, and the tightening baffle 520 and the tightening nut 530 both abut against the vertical plate of the rear mounting seat 160.

[0053] The engine thrust measurement rig includes an engine mounting frame 600, which includes an engine mounting top frame 610, a left column 620 and a right column 630 of the same structure, a front joint 640, a rear joint 650 and a lifting lug 660; the bottom surfaces of the left column 620 and the right column 630 are aligned with the bottom surface of the movable frame 200. Detachable connection; the engine mounting bracket 610 is fixedly connected to the top surfaces of the left column 620 and the right column 630 to form a gantry type, the front joint 640 and the rear joint 650 are detachably mounted on the engine mounting bracket 610, and the lifting lug 660 is fixedly connected to the engine mounting bracket 610; the engine mounting bracket 610 includes a front beam 611, a rear beam 612 and a longitudinal beam 613, the front beam 611 and the rear beam 612 are arranged in parallel and are both fixedly connected to the longitudinal beam 613, the rear beam 612 is fixedly connected to one end of the longitudinal beam 613, the front beam 611, the rear beam 612 and the longitudinal beam 613 form a "earth" shape; the longitudinal beam 613 is provided with a mounting hole 614 for mounting the front joint 640 and the rear joint 650; the left column 620 It includes a front column 621 , a rear column 622 and column connecting rods 623 . The front column 621 and the rear column 622 are arranged in parallel and fixedly connected by a plurality of column connecting rods 623 .

[0054] The engine thrust measurement bench includes a force sensor calibration device, which includes an industrial computer, a display, a standard force sensor data acquisition device and a working force sensor data acquisition device; the industrial computer is electrically connected to the display and the servo motor respectively, the standard force sensor data acquisition device is electrically connected to the standard force sensor and the industrial computer respectively, and the working force sensor data acquisition device is electrically connected to the working force sensor and the industrial computer respectively.

[0055] The exhaust system 700 is a prior art, specifically refer to the Chinese invention patent ZL201610786167.4 obtained by the applicant, wherein a portion of the tail chamber section 710 of the exhaust system 700 passes through the high-altitude simulation cabin 900 and is located inside the high-altitude simulation cabin 900; a replaceable small tail chamber is fixedly installed in the tail chamber section 710; the outlet of the exhaust system 700 is connected to the exhaust gas treatment system input pipeline 850 of the exhaust gas treatment system, and the exhaust gas treatment system input pipeline 850 is respectively connected to the spray tower air inlet 802 of the first alkali liquid spray tower 810 and the second alkali liquid spray tower 820 of the exhaust gas treatment system.

[0056] The tail gas treatment system includes a first alkali solution spray tower 810, a second alkali solution spray tower 820, an alkaline solution supply tank 830, a muffler 840, and a tail gas treatment system input pipeline 850. The alkaline solution supply tank 830 is a closed reinforced concrete structure filled with alkaline liquid.

[0057] The first alkali solution spray tower 810 and the second alkali solution spray tower 820 have the same structure. The first alkali solution spray tower 810 includes a spray tower body 801, a spray tower air inlet 802, a spray tower air outlet 803, a spray tower alkali solution input port 804, a spray tower first packing layer 805, a spray tower first spray system 806, a spray tower second packing layer 807, a spray tower second spray system 808, a spray tower level gauge 809, a spray tower circulation pump 811, a spray tower overflow port 812, a spray tower sewage outlet 813 and a spray tower maintenance port 814; the spray tower The tower body 801 is a hollow cylindrical structure. The spray tower air inlet 802, the spray tower alkali liquid input port 804, the spray tower overflow port 812, the spray tower sewage outlet 813 and the spray tower maintenance port 814 are all arranged on the side of the spray tower body 801, and the spray tower air outlet 803 is arranged on the top of the spray tower body 801; the spray tower air inlet 802 of the first alkali liquid spray tower 810 and the second alkali liquid spray tower 820 are both connected to the exhaust gas treatment system input pipeline 850, and the spray tower air outlet 803 is connected to the muffler tower 840 through a pipeline. One end of the delivery pipeline for delivering alkaline liquid to the spray system is connected to the alkaline liquid supply pool 830, and the other end passes through the spray tower alkaline liquid input port 804 and is respectively connected to the first spray system 806 and the second spray system 808 of the spray tower. The spray tower circulation pump 811 is arranged outside the spray tower body 801 and is used to pump the alkaline liquid in the alkaline liquid supply pool 830 out through the delivery pipe for delivering alkaline liquid to the spray system. The alkaline liquid is transported to the first spray system 806 and the second spray system 808 of the spray tower through a pipeline. Preferably, the pipeline for transporting alkaline liquid to the spray system is sealed at the spray tower alkali liquid inlet 804. The spray tower overflow port 812 is located higher than the spray tower air inlet 802, the spray tower alkali liquid inlet 804, and the spray tower sewage outlet 813. The spray tower sewage outlet 813 is connected to the external wastewater treatment equipment 850 via a pipeline. Along the axis of the spray tower body 801, the first spray tower packing layer 805, the first spray tower system 806, the second spray tower packing layer 807, and the second spray tower system 808 are fixedly installed in sequence within the spray tower body 801 from bottom to top. Preferably, the packing in the first packing layer 805 and the second packing layer 807 of the spray tower is ceramic packing. The spray tower liquid level meter is arranged on the side of the spray tower body 801 and located below the first packing layer 805 of the spray tower, and is used to monitor the water level of the wastewater at the bottom of the spray tower body 801.

[0058] The silencer tower 840 is a reinforced concrete structure, which includes an inlet silencer installation cavity 841 and an outlet silencer installation cavity 842 connected at the bottom. The inlet silencer installation cavity 841 is fixedly installed with an inlet silencer assembly 843, and the outlet silencer installation cavity 842 is fixedly installed with an outlet silencer assembly 844. The spray tower outlets 803 of the first alkali solution spray tower 810 and the second alkali solution spray tower 820 are both connected to the inlet silencer installation cavity 841 of the silencer tower 840 through pipelines, and the outlet of the outlet silencer installation cavity 842 is connected to the atmosphere; in the outlet silencer installation cavity 842, below the outlet silencer assembly 844, from bottom to top, a lower layer spray system 845, a middle layer spray system 846 are fixedly installed in sequence. The upper spray system 847, the lower spray system 845, the middle spray system 846, and the upper spray system 847 are connected to the alkaline liquid supply tank 830 via pipelines. A pump is provided outside the muffler tower 840 for pumping the alkaline liquid in the alkaline liquid supply tank 830 out of the alkaline liquid supply tank 830 and transporting it to the lower spray system 845, the middle spray system 846, and the upper spray system 847. The inlet and outlet muffler assembly 843 and 844 have the same structure.

[0059] Among them, the inlet silencer assembly 843 includes a lower silencer assembly 888431, a middle silencer assembly 888432 and an upper silencer assembly 888433 arranged in sequence from bottom to top; each layer of silencer assembly includes a semi-thin silencer 8431, a semi-thick silencer 8432, and a thin-thick combination silencer 8433 arranged at intervals. In each layer of silencer assembly, the semi-thin silencer 8431 and the semi-thick silencer 8432 are arranged at both ends and fixedly connected to the two end surfaces of the inlet silencer installation cavity 841 of the silencer tower 840. A number of thin-thick combination silencers 8433 are arranged between the semi-thin silencer 8431 and the semi-thick silencer 8432, and the adjacent silencers form an airflow channel; the installation method of each layer of silencer assembly and the connection method with the tower body are existing technologies, and the specific method is basically consistent with the applicant's prior application (CN201482057351.1).

[0060] On the same end side, the types of silencers of two adjacent layers are different, so that the air flow channels formed by adjacent silencer assembly are staggered, thereby improving the silencer ability of the silencer device. In a preferred embodiment of the present application, along the horizontal direction of the silencer tower, in the lower silencer assembly 888431, the silencers are arranged in the form of semi-thin silencer 8431, thin-thick combination silencer 8433, thin-thick combination silencer 8433, and semi-thick silencer 8432, wherein the thick silencer parts of the thin-thick combination silencer 8433 are all facing the semi-thin silencer 8431; the middle silencer assembly 88843 2, the arrangement of the sound-absorbing sheets is a half-thick sound-absorbing sheet 8432, a thin-thick combination sound-absorbing sheet 8433, a thin-thick combination sound-absorbing sheet 8433, and a half-thick sound-absorbing sheet 8431, wherein the thick sound-absorbing sheet portions in the thin-thick combination sound-absorbing sheet 8433 are all oriented toward the half-thin sound-absorbing sheet 8431; in the upper sound-absorbing sheet assembly 888433, the arrangement of the sound-absorbing sheets is a half-thin sound-absorbing sheet 8431, a thin-thick combination sound-absorbing sheet 8433, a thin-thick combination sound-absorbing sheet 8433, and a half-thick sound-absorbing sheet 8432, wherein the thick sound-absorbing sheet portions in the thin-thick combination sound-absorbing sheet 8433 are all oriented toward the half-thin sound-absorbing sheet 8431.

[0061] The semi-thin silencer 8431 includes a semi-thin silencer flat sheet 884311 and two semi-thin silencer guide cones 884312, the two semi-thin silencer guide cones 884312 are fixedly connected to the two ends of the semi-thin silencer flat sheet 884311, preferably, the two semi-thin silencer guide cones 884312 are integrally formed with the semi-thin silencer flat sheet 884311; the surfaces of the semi-thin silencer flat sheet 884311 and the semi-thin silencer guide cone 884312 are both provided with a plurality of silencer micropores 8434, the plurality of silencer micropores 8434 They are all through holes that penetrate the surfaces of the semi-thin silencer flat sheet 884311 and the semi-thin silencer guide cone sheet 884312. Among them, the structure of the semi-thin silencer 8431 is the existing technology, which is the half-sheet structure of the sheet assembly in the applicant's prior application (application number: CN201482056663.0, invention name: sheet assembly for silencer). By setting the semi-thin silencer guide cone sheet 884312, the gas entering the air flow channel is guided, so that the gas flow is uniform, and the silencer effect is further improved.

[0062] The semi-thick silencer 8432 includes a semi-thick silencer flat sheet 884321 and two semi-thick silencer guide cones 884322. The two semi-thick silencer guide cones 884322 are fixedly connected to both ends of the semi-thick silencer flat sheet 884321. Preferably, the two semi-thick silencer guide cones 884322 are integrally formed with the semi-thick silencer flat sheet 884321. The surfaces of the semi-thick silencer flat sheet 884321 and the semi-thick silencer guide cone 884322 are both provided with a plurality of silencer micropores 8434. The plurality of silencer micropores 8434 are They are all through holes that penetrate the surfaces of the semi-thick silencer flat sheet 884321 and the semi-thick silencer guide cone 884322; among them, the structure of the semi-thick silencer 8432 is the existing technology, which is the half-sheet structure of the thin sheet assembly in the applicant's prior application (application number: CN201482056662.6, invention name: thick sheet assembly for silencer); by setting the semi-thick silencer guide cone 884322, the gas entering the air flow channel is guided, so that the gas flow is uniform, and the silencer effect is further improved.

[0063] The thin-thick combination sound-absorbing sheet 8433 is a combination sheet formed by fixing the semi-thin sound-absorbing sheet 8431 and the semi-thick sound-absorbing sheet 8432 in a horizontal plane. In the combined thin-thick combination sound-absorbing sheet 8433, the semi-thin sound-absorbing sheet flat sheet 884311 and the semi-thick sound-absorbing sheet flat sheet 884321 are arranged in parallel to constitute the thin-thick combination sound-absorbing sheet flat sheet 884331 of the thin-thick combination sound-absorbing sheet 8433, and the two semi-thin sound-absorbing sheet guide cones 884312 and the two semi-thick sound-absorbing sheet guide cones 884322 constitute the two thin-thick combination sound-absorbing sheet guide cones 884332 of the thin-thick combination sound-absorbing sheet 8433. By arranging the thin-thick combination sound-absorbing sheet guide cones 884332, the gas entering the airflow channel can be guided, so that the gas flows evenly, thereby further improving the sound-absorbing effect.

[0064] The thickness of the semi-thin sound-absorbing sheet 8431 is L1, the thickness of the semi-thick sound-absorbing sheet 8432 is L2, and the thickness of the thin-thick combined sound-absorbing sheet 8433 is L3, wherein L1<L2<L3, and L3=L1+L2.

[0065] Preferably, the diameter of the micropores 8434 of the sound-absorbing plate is 0.6 mm to 1 mm, and further preferably, the diameter of the micropores 8434 of the sound-absorbing plate is 0.8 mm.

[0066] Preferably, the horizontal cross-section of the inlet silencer installation cavity 841 and the outlet silencer installation cavity 842 is a square channel, and the wall thickness of the tower body 811 is 0.5m. Further preferably, the horizontal cross-section of the tower body 811 is a square channel of 0.5m×0.5m.

[0067] Preferably, the thickness L1 of the semi-thin sound-absorbing sheet 8431 is 80 mm-85 mm, and further preferably, the thickness L1 of the semi-thin sound-absorbing sheet 8431 is 82 mm.

[0068] Preferably, the thickness L2 of the semi-thickness sound-absorbing sheet 8432 is 195 mm-205 mm, and further preferably, the thickness L2 of the semi-thickness sound-absorbing sheet 8432 is 820 mm.

[0069] Preferably, the alkaline liquid supply tank 830 is provided with a water inlet for injecting municipal tap water.

[0070] Preferably, the alkaline liquid supply tank 830 is provided with a detector for detecting the pH value of the alkaline liquid in the alkaline liquid supply tank 830 and a level meter for displaying the water level of the alkaline liquid in the alkaline liquid supply tank 830 .

[0071] Preferably, the alkaline liquid supply tank 830 is provided with a feeding port for feeding alkaline material to ensure that the pH value of the alkaline liquid in the alkaline liquid supply tank 830 reaches a predetermined value.

[0072] The method for measuring supersonic engine thrust and performing tail gas treatment and emission using the supersonic engine test bench thrust measurement and exhaust device comprises the following steps:

[0073] S100), install the test engine 1 and the measurement section

[0074] S110), passing the measuring section for measuring engine intake parameters through the first measuring section bracket 410 and the second measuring section bracket 420 in sequence, and placing the measuring section in the first measuring section bracket 410 and the second measuring section bracket 420;

[0075] S120), installing the front joint 640 and the rear joint 650 on the longitudinal beam 613 according to the suspension position of the test engine 1;

[0076] S130), after the engine mounting frame 600 is mounted on the dynamic frame body 210, the test engine 1 is mounted on the front joint 640 and the rear joint 650;

[0077] S140) Adjust the measuring section, connect one end of the measuring section to the air intake of the test engine 1, adjust the positioning mechanism screw 4143 in the measuring section bracket positioning mechanism 414, make the measuring section coaxial with the engine air intake, and then rotate the positioning mechanism locking nut 4142 and the positioning mechanism nut 4141 in the measuring section bracket positioning mechanism 414 in sequence.

[0078] S200) Disassemble the locking device

[0079] Loosen the fixing nut 530 , pull out the fixing screw 510 from the vertical plate of the rear mounting seat 160 , the fixing baffle 520 , and the baffle at the rear end of the movable frame body 210 in sequence, and then take out the fixing baffle 520 .

[0080] S300), determining the working force sensor error

[0081] S310), the industrial computer controls the servo motor to start and drive the hydraulic loading device to work, the hydraulic loading device drives the calibration cylinder to work, the piston of the calibration cylinder drives the standard force sensor 340 to move, and then drives the movable frame body 210 to move, and during the displacement of the movable frame body 210, force is applied to the working force sensor 350;

[0082] S320), the hydraulic loading device drives the calibration cylinder to continue applying the loading force to the standard force sensor 340 to a predetermined value and then unloading the loading force to zero; the standard force sensor data acquisition device and the working force sensor data acquisition device respectively collect the force values ​​output by the standard force sensor 340 and the working force sensor 350 during the process of applying the loading force and unloading the loading force and feed them back to the industrial computer, and the display shows the force values ​​output by the standard force sensor 340 and the working force sensor 350 during the process of applying the loading force and unloading the loading force collected by the standard force sensor data acquisition device and the working force sensor data acquisition device;

[0083] S330), draw a characteristic curve diagram of the standard force sensor 340 and the working force sensor 350 according to the force values ​​output by the standard force sensor 340 and the working force sensor 350 during the process of applying the loading force and unloading the loading force, which are collected by the standard force sensor data acquisition device and the working force sensor data acquisition device and displayed on the display; under the same loading force, the difference between the force value output by the working force sensor 350 collected by the working force sensor data acquisition device and the force value output by the standard force sensor 340 collected by the standard force sensor data acquisition device is the working force sensor error.

[0084] S400) Start the spray system

[0085] S410) respectively start the spray tower circulation pump 811 and the pump for pumping the alkaline liquid in the alkaline liquid supply pool 830 out and transporting it to the lower spray system 845, the middle spray system 846 and the upper spray system 847, and pump the alkaline liquid in the alkaline liquid supply pool 830 out and transport it to the first spray tower 806 and the second spray tower 808 of the first alkali liquid spray tower 810 and the second alkali liquid spray tower 820, as well as the lower spray system 845, the middle spray system 846 and the upper spray system 847.

[0086] S420), respectively start the first spray system 806 and the second spray system 808 of the first alkali solution spray tower 810 and the second alkali solution spray tower 820, as well as the lower spray system 845, the middle spray system 846 and the upper spray system 847, and the alkaline liquid begins to spray. Keep the first spray system 806 and the second spray system 808 of the first alkali solution spray tower 810 and the second alkali solution spray tower 820, as well as the lower spray system 845, the middle spray system 846 and the upper spray system 847 working.

[0087] S500), simulate the engine high altitude flight environment pressure

[0088] activating the ejector in the exhaust system 700 to extract the gas in the high-altitude simulation cabin 900 so that the pressure in the high-altitude simulation cabin 900 is the same as the ambient pressure at the altitude at which the engine is flying at high altitude;

[0089] S600) Measure the thrust of the engine under test

[0090] The engine is ignited, and after the measuring section detects that the intake parameters of the test engine 1 have reached the working condition, the display shows the force value output by the working force sensor 350 collected by the working force sensor data acquisition device.

[0091] S700), exhaust gas treatment

[0092] S710), engine test, the exhaust gas of the engine test bench is discharged from the exhaust system (the exhaust system can be an exhaust pipe, an ejector, etc.), and enters the first alkali solution spray tower 810 and the second alkali solution spray tower 820 of the spray tower air inlet 802 through the exhaust gas treatment system input pipeline 850 respectively.

[0093] S720), the exhaust gas of the engine test bench entering the air inlet 802 of the spray tower passes through the first packing layer 805 and the second packing layer 807 of the spray tower in sequence, and is discharged from the air outlet 803 of the spray tower through the pipeline and enters the inlet silencer installation cavity 841 at the top of the silencer tower 840. When the exhaust gas of the engine test bench passes through the first packing layer 805 and the second packing layer 807 of the spray tower, the alkaline liquid and the exhaust gas of the engine test bench are degraded.

[0094] S730) The gas entering the inlet silencer installation cavity 841 is silenced and noise-reduced by the staggered air flow channel composed of three layers of silencer assembly, and then enters the outlet silencer installation cavity 842 for secondary spraying.

[0095] S740) After the second spraying, the gas passes through the staggered air flow channel composed of three layers of silencer assembly to reduce noise and then is discharged into the atmosphere from the top of the outlet silencer installation cavity 842 of the silencer tower 840.

[0096] S800), turn off the sprinkler system

[0097] After the engine test is completed, wait until the predetermined time is reached, preferably 2-4 hours after the test is completed, and more preferably 3 hours after the test is completed, turn off the spray tower circulation pump 811, the first spray system 806 and the second spray system 808 of the spray tower, and then close the valve at the alkaline circulating water delivery port for delivering alkaline circulating water located below the alkaline circulating water level in the circulating water pool 830.

[0098] After the engine test is completed, wait until the predetermined time is reached, preferably 2-4 hours after the test is completed, and more preferably 3 hours after the test is completed, and turn off the spray tower circulation pump 811, which is used to pump the alkaline liquid in the alkaline liquid supply tank 830 out and transport it to the lower spray system 845, the middle spray system 846 and the upper spray system 847, the first spray system 806, the spray tower second spray system 808, the lower spray system 845, the middle spray system 846 and the upper spray system 847.

[0099] Preferably, after each engine test, tap water is injected through the water inlet for injecting municipal tap water provided in the alkaline liquid supply tank 830, and alkaline material is added through the feeding port for adding alkaline material provided in the alkaline liquid supply tank 830, so that the pH of the alkaline liquid in the alkaline liquid supply tank 830 reaches a predetermined value.

[0100] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0101] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A supersonic engine test bench thrust measurement exhaust device, characterized in that: It includes an engine thrust measurement bench, an exhaust system, an exhaust gas treatment system, and a high-altitude simulation cabin. The high-altitude simulation cabin is a sealed shell structure. The engine thrust measurement bench is fixedly installed in the high-altitude simulation cabin, and the test engine is installed on the engine thrust measurement bench. One end of the exhaust system passes through the shell surface of the high-altitude simulation cabin and is fixedly installed inside the high-altitude simulation cabin. The other end is fixedly connected to the exhaust gas treatment system. The engine thrust measurement bench includes a fixed frame, a dynamic frame, and a loading measurement device; the loading measurement device includes a spring sheet, a loading mechanism, and a working force sensor; the dynamic frame is suspended on the fixed frame by the spring sheet, the loading mechanism is fixedly mounted on the fixed frame, and the two ends of the working force sensor are respectively connected to the fixed frame and the dynamic frame; The movable frame includes a movable frame body, a first movable frame spring sheet mounting seat, a movable frame working force sensor mounting seat, a second movable frame spring sheet mounting seat and a movable frame standard force sensor mounting seat; along the length direction of the movable frame body, the movable frame standard force sensor mounting seat is fixedly mounted on the front end bottom surface of the movable frame body; the first movable frame spring sheet mounting seat includes two fixedly mounted on the front end bottom surface of the movable frame body and respectively located on both sides of the movable frame standard force sensor mounting seat; the movable frame working force sensor mounting seat is fixedly mounted on the bottom of the movable frame body and located on the center line along the length direction of the movable frame body; the second movable frame spring sheet mounting seat includes two respectively fixedly mounted on the rear end bottom surface of the movable frame body; The fixed frame includes a base, a front mounting seat, a loading mechanism mounting seat, a first fixed frame spring piece mounting seat, a fixed frame working force sensor mounting seat, a rear mounting seat, and a second fixed frame spring piece mounting seat; the base is a rectangular parallelepiped structure, and along the length direction of the base, the front mounting seat and the rear mounting seat are fixedly mounted at the front and rear ends of the base respectively, and the rear mounting seat includes a horizontal plate and a vertical plate, and the horizontal plate and the vertical plate form an "L" shape; the loading mechanism mounting seat is fixedly mounted on the front mounting seat, and the first fixed frame spring piece mounting seat includes two, which are fixedly mounted on the front end of the base and are respectively located on both sides of the front mounting seat; the fixed frame working force sensor mounting seat is fixedly mounted on the base and is located on the center line along the length direction of the base; the second fixed frame spring piece mounting seat includes two, which are fixedly mounted on the rear end of the base and are respectively located on both sides of the rear mounting seat; The tail gas treatment system includes a first alkali liquid spray tower, a second alkali liquid spray tower, an alkaline liquid supply tank, a silencer and an exhaust gas treatment system input pipeline; the spray tower air inlets of the first alkali liquid spray tower and the second alkali liquid spray tower are both connected to the exhaust gas treatment system input pipeline, and the spray tower air outlets are both connected to the silencer through pipelines; one end of the delivery pipeline for delivering alkaline liquid to the spray system is connected to the alkaline liquid supply tank, and the other end passes through the alkali liquid input port of the spray tower and is respectively connected to the first spray system of the spray tower and the second spray system of the spray tower; the lower spray system, the middle spray system and the upper spray system are fixedly installed in the silencer from bottom to top, and the lower spray system, the middle spray system and the upper spray system are connected to the alkaline liquid supply tank through pipelines; The first alkali solution spray tower and the second alkali solution spray tower have the same structure. The first alkali solution spray tower includes a spray tower body, a spray tower air inlet, a spray tower air outlet, a spray tower alkali solution input port, a spray tower first packing layer, a spray tower first spray system, a spray tower second packing layer, a spray tower second spray system, a spray tower level gauge, a spray tower circulation pump, a spray tower overflow port, a spray tower sewage outlet and a spray tower maintenance port; the spray tower body is a hollow cylindrical structure, the spray tower air inlet, the spray tower alkali solution input port, the spray tower overflow port, the spray tower sewage outlet and the spray tower maintenance port are all arranged on the side of the spray tower body, and the spray tower air outlet is arranged on the top of the spray tower body; the spray tower circulation pump is arranged outside the spray tower body for The alkaline liquid in the alkaline liquid supply tank is pumped out and transported to the first spray system and the second spray system of the spray tower through a delivery pipeline for delivering alkaline liquid to the spray system; the overflow port of the spray tower is arranged at a position higher than the air inlet of the spray tower, the alkali liquid inlet of the spray tower, and the sewage outlet of the spray tower, and the sewage outlet of the spray tower is connected to the external wastewater treatment equipment through a pipeline; along the axis of the spray tower body, from bottom to top, the first packing layer of the spray tower, the first spray system of the spray tower, the second packing layer of the spray tower, and the second spray system of the spray tower are fixedly installed in sequence inside the spray tower body; a spray tower liquid level gauge is arranged on the side of the spray tower body, below the first packing layer of the spray tower, and is used to monitor the water level of the wastewater at the bottom of the spray tower body; The silencer tower includes an inlet silencer installation cavity and an outlet silencer installation cavity which are connected at the bottom, an inlet silencer assembly is fixedly installed at the inlet silencer installation cavity, and an outlet silencer assembly is fixedly installed at the outlet silencer installation cavity, the spray tower outlets of the first alkali solution spray tower and the second alkali solution spray tower are both connected with the inlet silencer installation cavity of the silencer tower through pipelines, and the outlet of the outlet silencer installation cavity is connected with the atmosphere; in the outlet silencer installation cavity, below the outlet silencer assembly, from bottom to top, a lower spray system, a middle spray system and an upper spray system are fixedly installed in sequence, the lower spray system, the middle spray system and the upper spray system are connected with the alkaline liquid supply tank through pipelines, and a pump for pumping the alkaline liquid in the alkaline liquid supply tank out to the lower spray system, the middle spray system and the upper spray system is provided outside the silencer tower; The inlet silencer assembly and the outlet silencer assembly have the same structure. The inlet silencer assembly includes a lower silencer assembly, a middle silencer assembly, and an upper silencer assembly arranged in sequence from bottom to top. Each silencer assembly includes a semi-thin silencer, a semi-thick silencer, and a thin-thick combination silencer. In each silencer assembly, the semi-thin silencer and the semi-thick silencer are arranged at both ends and fixedly connected to the two end surfaces of the inlet silencer installation cavity of the silencer tower. A plurality of thin-thick combination silencers are arranged between the semi-thin silencer and the semi-thick silencer. The adjacent silencers form an airflow channel. Along the horizontal direction of the silencer tower, in the lower layer silencer plate assembly, the silencer plates are arranged in the following manner: semi-thin silencer plates, thin-thick combination silencer plates, thin-thick combination silencer plates, and semi-thick silencer plates, wherein the thick silencer plate portions in the thin-thick combination silencer plates are all oriented toward the semi-thin silencer plates; in the middle layer silencer plate assembly, the silencer plates are arranged in the following manner: semi-thick silencer plates, thin-thick combination silencer plates, thin-thick combination silencer plates, and semi-thin silencer plates, wherein the thick silencer plate portions in the thin-thick combination silencer plates are all oriented toward the semi-thin silencer plates; in the upper layer silencer plate assembly, the silencer plates are arranged in the following manner: semi-thin silencer plates, thin-thick combination silencer plates, thin-thick combination silencer plates, and semi-thick silencer plates, wherein the thick silencer plate portions in the thin-thick combination silencer plates are all oriented toward the semi-thin silencer plates; The thin-thick combination silencer is a combination piece formed by a half-thin silencer and a half-thick silencer fixedly connected in the horizontal plane. In the combined thin-thick combination silencer, the half-thin silencer flat piece and the half-thick silencer flat piece are arranged in parallel to form a thin-thick combination silencer flat piece of the thin-thick combination silencer, and two half-thin silencer guide cones and two half-thick silencer guide cones constitute two thin-thick combination silencer guide cones of the thin-thick combination silencer.

2. The supersonic engine test bench thrust measurement exhaust device according to claim 1, characterized in that: The loading and measuring device includes a first spring sheet, a second spring sheet, a loading mechanism, a standard force sensor and a working force sensor; the first spring sheet includes two, each first spring sheet is fixedly connected to a first fixed frame spring sheet mounting seat and a first movable frame spring sheet mounting seat, and the second spring sheet includes two, each second spring sheet is fixedly connected at both ends to a second fixed frame spring sheet mounting seat and a second movable frame spring sheet mounting seat; the loading mechanism is fixedly mounted on the transverse plate of the front mounting seat, the standard force sensor is fixedly mounted on the baffle at the front end of the movable frame body, the loading mechanism and the standard force sensor are coaxially arranged and parallel to the center line of the base along the length direction; the two ends of the working force sensor are fixedly connected to the fixed frame working force sensor mounting seat and the movable frame working force sensor mounting seat, and the working force sensor is coaxially arranged with the loading mechanism and the standard force sensor.

3. A method for measuring supersonic engine thrust and performing exhaust gas treatment and emission using the supersonic engine test bench thrust measurement and exhaust device according to any one of claims 1 to 2, characterized in that: The steps include: S100) Install the test engine and measurement section S110), passing the measuring section for measuring engine intake parameters through the first measuring section bracket and the second measuring section bracket in sequence, and placing the measuring section in the first measuring section bracket and the second measuring section bracket; S120), installing the front joint and the rear joint on the engine mounting top frame according to the suspension position of the test engine; S130), after the engine mounting frame is mounted on the dynamic frame body, the test engine is mounted on the front joint and the rear joint; S140), adjusting the measuring section, connecting one end of the measuring section to the air inlet of the engine under test, adjusting the measuring section bracket to make the measuring section coaxial with the engine air inlet, and then positioning the measuring section; S200) Remove the locking device Loosen the locking nut, pull out the locking screw from the vertical plate of the rear mounting seat, the locking baffle, and the baffle at the rear end of the movable frame in sequence, and then remove the locking baffle; S300) Determine the error of the working force sensor S310), the industrial computer controls the servo motor to start and drive the hydraulic loading device to work, the hydraulic loading device drives the calibration cylinder to work, the piston of the calibration cylinder drives the standard force sensor to move, and then drives the dynamic frame to move, and during the displacement of the dynamic frame, force is applied to the working force sensor; S320), the hydraulic loading device drives the calibration cylinder to continue applying a loading force to the standard force sensor to a predetermined value and then unloads the loading force to zero; The standard force sensor data acquisition device and the working force sensor data acquisition device respectively acquire the force values ​​output by the standard force sensor and the working force sensor during the process of applying the loading force and unloading the loading force, and feed them back to the industrial computer. The display shows the force values ​​output by the standard force sensor and the working force sensor during the process of applying the loading force and unloading the loading force, which are acquired by the standard force sensor data acquisition device and the working force sensor data acquisition device. S330), plotting characteristic curves of the standard force sensor and the working force sensor based on the force values ​​output by the standard force sensor and the working force sensor during the process of applying and unloading the loading force, as collected by the standard force sensor data collection device and the working force sensor data collection device and displayed on the display; under the same loading force, the difference between the force value output by the working force sensor collected by the working force sensor data collection device and the force value output by the standard force sensor collected by the standard force sensor data collection device is the working force sensor error; S400), start the spray system S410), respectively starting the spray tower circulation pump and the pump for pumping the alkaline liquid in the alkaline liquid supply pool out and delivering it to the lower spray system, the middle spray system and the upper spray system, and pumping the alkaline liquid in the alkaline liquid supply pool out and delivering it to the first spray system of the first alkali liquid spray tower and the second spray system of the spray tower, as well as the lower spray system, the middle spray system and the upper spray system of the second alkali liquid spray tower; S420), respectively starting the first spray system and the second spray system of the spray tower, as well as the lower spray system, the middle spray system, and the upper spray system of the first alkali solution spray tower and the second alkali solution spray tower, and starting the alkaline liquid spraying. Keep the first spray system and the second spray system of the spray tower, as well as the lower spray system, the middle spray system, and the upper spray system of the first alkali solution spray tower and the second alkali solution spray tower working; S500), simulate the engine high altitude flight environment pressure activating an ejector in the exhaust system to extract gas from the high-altitude simulation cabin so that the pressure in the high-altitude simulation cabin is the same as the ambient pressure at the altitude at which the engine is flying at high altitude; S600), measuring the thrust of the test engine The engine is ignited, and after the measuring section detects that the intake parameters of the test engine have reached the working condition, the display shows the force value output by the working force sensor collected by the working force sensor data acquisition device; S700), exhaust gas treatment S710) Engine test: exhaust gas from the engine test bench is discharged from the exhaust system and enters the first alkali solution spray tower and the second alkali solution spray tower through the exhaust gas treatment system input pipeline respectively; S720), the exhaust gas of the engine test bench entering the air inlet of the spray tower passes through the first packing layer and the second packing layer of the spray tower in sequence, and then is discharged from the air outlet of the spray tower through the pipeline and enters the inlet silencer installation cavity from the top of the silencer tower. When the exhaust gas of the engine test bench passes through the first packing layer and the second packing layer of the spray tower, the alkaline liquid and the exhaust gas of the engine test bench are degraded; S730), the gas entering the inlet silencer installation cavity passes through the staggered airflow channel formed by the three layers of silencer assembly to reduce noise, and then enters the outlet silencer installation cavity for secondary spraying; S740), the gas after the secondary spraying passes through the staggered air flow channel formed by the three silencer plate assemblies to reduce noise and then is discharged into the atmosphere from the top of the silencer plate installation cavity at the outlet of the silencer tower; S800), turn off the sprinkler system After the engine test is completed, when the time reaches the predetermined time, the spray tower circulation pump is turned off, and then the first spray system and the second spray system of the spray tower are closed, and then the valve at the alkaline circulating water delivery port for delivering alkaline circulating water located below the alkaline circulating water level in the circulating water pool is closed.

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