Remote control and turbulence intensity direction controllable visual test constant volume bomb

Abstract

The invention discloses a remote control and turbulence intensity direction controllable visual test constant volume bomb, and belongs to the field of volume bombs, the constant volume bomb comprises a constant volume bomb body, the constant volume bomb body is connected with an air outlet of a compressor through a turbulence generation device, and the direction of a nozzle can be freely adjusted through rotation of the turbulence generation device; the temperature control system is used for controlling the temperature of the constant volume bomb body; the gas inlet and waste gas treatment system is used for vacuumizing and treating exhausted waste gas; the integrated remote control system is used for realizing remote control monitoring; the detachable window mechanism is used for observing the combustion state in the constant volume bomb body and monitoring ignition and ion current fluctuation; the image system is used for recording the turbulent flow state of the mixed gas in the constant volume bomb body. The vortex compressor and the turbulent flow generation device are used for generating a turbulent flow environment with controllable intensity and direction, and the independent disc electrode acquisition system is designed for dynamically monitoring the flame ion current waveform and better monitoring the turbulent flow flame combustion state.

Description

Technical Field

[0001] The present invention relates to the technical field of volume bombs, and in particular to a visual test constant volume bomb with remote control and controllable turbulence intensity and direction. Background Art

[0002] The constant volume bomb, also known as the constant volume combustion bomb (referred to as the volume bomb), mainly simulates the combustion in the combustion chamber when the piston is near the top dead center. It is characterized by a simple structure and the ability to easily change the thermodynamic parameters (including air-fuel ratio, residual exhaust gas coefficient, pressure and temperature), turbulence parameters and ignition parameters (spark plug position, electrode gap and ignition energy). It studies the impact of changes in multiple parameters on the combustion process, and thus becomes an important tool and test platform in the basic research of internal combustion engine combustion theory.

[0003] The existing constant volume bombs that can generate turbulence mainly use orifice plates and fans to generate turbulence. There is a longitudinal displacement between the orifice plate connecting rod and the constant volume combustion bomb of the orifice plate type turbulence generating device, which is difficult to seal, and the turbulence intensity in the device decays over time; the fan type turbulence generating device has a more complex structure, and there is a rotational motion between the connecting shaft between the motor and the fan and the constant volume combustion bomb, which has a sealing problem. The control accuracy of the ignition timing is required to be high. Summary of the invention

[0004] In order to solve the problems in the above-mentioned background technology, the purpose of the present invention is to provide a remote-controlled and visually test constant-volume bomb with controllable turbulence intensity and direction. By using a vortex compressor and a turbulence generating device, a turbulence environment with controllable intensity and direction is generated to achieve different turbulence environments, including isotropic and anisotropic turbulence. A passive fan is used at the end of the turbulence generating device to occupy a small space; the mixture ratio under different working conditions is achieved through a precise automatic gas distribution system; the ignition system adjusts the ignition energy according to the experimental working conditions; the imaging system can realize the visualization of the experimental process in the bomb and the dynamic data recording and preservation of the flame combustion state; the experimental data acquisition system includes an ion current acquisition device, a pressure acquisition device, a combustion temperature acquisition and a bomb body temperature control system; the bomb exhaust pipe is equipped with an exhaust gas treatment system to detect oxygen concentration, an exhaust gas analysis system and a three-way catalytic converter to reduce harmful gas emissions while monitoring the combustion conditions.

[0005] To achieve the above object, the present invention provides a remotely controlled and turbulence intensity direction controllable visual test constant volume bomb, comprising The constant volume bomb body is connected to the air outlet of the compressor through a turbulence generating device, and the turbulence generating device is used to form a turbulence environment with controllable intensity and direction of various isotropic and anisotropic properties inside the constant volume bomb body; Temperature control system, which realizes temperature control of the constant volume bomb body through electric heating and external circulation heat dissipation; The air intake and exhaust gas treatment system is used to evacuate the interior of the constant volume bomb and detect and treat the exhaust gas; Integrated remote control system, used to remotely control the internal experiments of the constant volume bomb and monitor the experimental process of the constant volume bomb; The detachable window mechanism is used for observing the experimental process inside the constant volume bomb body and for dynamic monitoring of the turbulent combustion state and the flame ion current during the combustion process; The imaging system is used to record the turbulent combustion process of the mixture inside the constant volume bomb body.

[0006] Preferably, the compressor is a vortex compressor, and the compressor and the turbulence generating device are both provided with a plurality of turbulence generating devices, the turbulence generating device comprises a front section shaft body, one end of the front section shaft body is connected to the air outlet of the compressor, the other end of the front section shaft body is connected to one end of the middle section shaft body through a vertical bearing, the other end of the middle section shaft body is an inclined surface, the inclined surface is connected to one end of the last section shaft body through an inclined surface bearing, and a passive fan is provided at the outlet of the other end of the last section shaft body; A circular partition is arranged inside one end of the front shaft body connected to the compressor, and the circular partition is used to open and close the internal channel of the front shaft body; Sealing rubber rings are provided at the connection between the front shaft and the compressor, and at the connection between the rear shaft and the constant volume bomb body.

[0007] Preferably, the temperature control system includes a heat dissipation water tank and several electric heating rods, which are inserted into the constant volume bomb body. One end of the heat dissipation water tank is connected to one end of a water inlet pipe through a water pump, and the other end of the water inlet pipe is connected to a liquid pipeline laid inside the constant volume bomb body. The other end of the heat dissipation water tank is connected to one end of a drain pipe, and the other end of the drain pipe is connected to the liquid pipeline laid inside the constant volume bomb body.

[0008] Preferably, the intake and exhaust gas treatment system includes an intake control mechanism, which includes an intake ratio controller 1, an intake electronic valve and an intake ratio controller 2. The intake ratio controller 1, the intake electronic valve and the intake ratio controller 2 are all connected to one end of the intake pipe, and the other end of the intake pipe is connected to the interior of the constant volume bomb body. The constant volume bomb body is connected to an exhaust pipe, and a vacuum pump and an exhaust gas treatment system are arranged in parallel on the exhaust pipe. The exhaust gas treatment system includes an oxygen sensor and a three-way catalytic converter arranged on the exhaust pipe.

[0009] Preferably, the detachable window mechanism comprises a detachable window, and the detachable window is installed in six directions of the constant volume bomb body, namely, front, back, left, right, up, and down.

[0010] Preferably, the center position of the detachable window is transparent explosion-proof glass or metal. When the center position of the detachable window is metal, the detachable window is reserved with two sensor installation holes symmetrically arranged up and down and two sensor installation holes symmetrically arranged left and right.

[0011] Preferably, an ignition electrode with an adjustable gap function is installed on the sensor mounting holes which are symmetrically arranged up and down.

[0012] Preferably, a flame ion current collection device is installed on the sensor installation holes that are symmetrically arranged on the left and right.

[0013] Preferably, the imaging system includes a light source, and after the light source is scattered by a convex mirror, the light spot is directed through the transparent explosion-proof glass of the detachable window by the main reflector and falls on the secondary reflector, and then the light spot is projected into the lens of the high-speed camera through a concave mirror and a knife edge.

[0014] Preferably, the integrated remote control system includes a computer, and an intake flow sensor, a temperature sensor, and a cylinder pressure sensor are installed in the constant volume bomb body. The constant volume bomb body, the temperature control system, the imaging system, the detachable window mechanism, the intake and exhaust gas treatment system, and the dynamic data processing system are connected to the computer.

[0015] Therefore, the present invention adopts the above-mentioned remotely controlled and turbulence intensity direction controllable visual test constant volume bomb, which has the following beneficial effects: (1) The present invention adopts a projectile integrated design, a highly integrated projectile, which makes the overall experimental platform smaller, provides more experimental space, and is easier to install; (2) The turbulent environment of the present invention adopts a vortex compressor and a separately designed turbulent generating device to create an isotropic, anisotropic, and intensity- and direction-controllable turbulent environment, thereby achieving a variable vector turbulent environment inside the bomb container, which occupies a small space and does not require the use of an active fan, thereby reducing the heat generated by the active fan motor; the turbulent generating device adopts a double-bearing superposition design, using a bearing installed on a vertical and an inclined surface, which can change the turbulent outlet within a large range and realize the change of direction of the turbulent vector outlet; (3) The temperature control system adopted in the present invention is composed of a heat dissipation mechanism and a heating mechanism, which ensures that the temperature of the experimental process and the temperature of the bomb body are controllable, and can also monitor the temperature of the experimental process and control the temperature of the bomb body.

[0016] (4) The present invention adopts a detachable window. When the window is replaced with transparent glass, the imaging system is designed as a whole. Through the combination of light source and mirror, the high-speed camera can better complete the visualization of the experimental process and the dynamic data recording and preservation of the flame combustion state. When the window is replaced with metal, two symmetrical sensor mounting holes are reserved at the center position. Ignition electrodes, flame ion current acquisition devices or other sensors can be installed on the mounting holes, which has a wider range of applications.

[0017] (5) The present invention realizes precise mixing ratio of the mixed gas and control of the intake electronic valve through the intake and exhaust gas treatment systems. A vacuum pump and an exhaust gas treatment system are arranged in parallel on the exhaust pipe to realize analysis and treatment of the exhaust gas through an oxygen sensor, a three-way catalytic converter, and an exhaust gas analysis system.

[0018] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the front structure of a constant volume bomb according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the connection between the compressor and the turbulence generating device according to an embodiment of the present invention; Figure 4 A diagram showing an optical path of an imaging system according to an embodiment of the present invention; Figure 5 is a schematic diagram of the structure of an imaging system according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the air intake structure connection of an embodiment of the present invention; Figure 7 This is a structural diagram of a double-axis rotating nozzle at the end of a turbulence generating device according to an embodiment of the present invention; Figure 8 A schematic diagram of the bearing rotation according to an embodiment of the present invention; Fig. 9 A semi-perspective schematic diagram of a liquid pipeline according to an embodiment of the present invention; Fig.10 This is a schematic diagram of a flame ion current acquisition device according to an embodiment of the present invention; Fig.11 Schematic diagram of the central sensor mounting hole of the detachable end cover of an embodiment of the present invention.

[0020] Reference numerals 1. Compressor; 2. Water inlet pipe; 3. Water pump; 4. Radiator tank; 5. Drain pipe; 6. Electric heating rod; 7. Support rod; 8. Air inlet; 9. Ignition coil; 10. Front shaft; 11. Ignition electrode; 12. Bare electrode; 13. Ion current transmission end; 14. Motor; 15. Rotor; 16. Main reflector; 17. Secondary reflector; 18. Light source; 19. Convex mirror; 20. Concave mirror; 21. Knife edge; 22. High-speed camera; 23. Vertical bearing; 24. Bevel bearing; 25. End shaft; 26. Intake ratio controller 1; 27. Intake electronic valve; 28. Intake ratio controller 2; 29. ​​Intake pipe; 30. Constant volume bomb body; 31. Exhaust pipe; 32. Vacuum pump; 33. Oxygen sensor; 34. Three-way catalytic converter; 35. Middle shaft. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages disclosed in the embodiments of the present invention clearer, the embodiments of the present invention are further described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the embodiments of the present invention and are not intended to limit the embodiments of the present invention. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions.

[0022] It should be noted that the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or server that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products or devices.

[0023] Like reference numerals and letters denote similar items in the following drawings, and thus, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when used. 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Example like Figure 1 , Figure 2As shown, a remotely controlled and turbulence intensity direction controllable visual test constant volume bomb described in the present invention includes a constant volume bomb body 30, a turbulence generating device, a temperature control system, an intake and exhaust gas treatment system, a detachable window mechanism, an imaging system, and an integrated remote control system. The integrated remote control system includes a computer, and an intake flow sensor, a temperature sensor, and a cylinder pressure sensor are installed in the constant volume bomb body 30. The constant volume bomb body 30, the temperature control system, the imaging system, the detachable window mechanism, the intake and exhaust gas treatment system and the computer are connected to communicate using an existing structure. The computer realizes the functional coordination of each part, as well as the overall configuration of the experimental part, and performs real-time monitoring of the mixture combustion experiment process and dynamic data collection and analysis through the built-in existing dynamic data processing system.

[0027] like Figure 3 As shown, the constant volume bomb body 30 is connected to the air outlet at one end of the compressor 1 through a turbulence generating device, and the other end of the compressor 1 is an air inlet 8. The turbulence generating device is used to form a turbulent environment with isotropic and anisotropic properties and controllable direction and intensity inside the constant volume bomb body 30. The compressor 1 is a vortex compressor 1, and the compressor 1 and the turbulence generating device are both provided with 4. Figure 3 , Figure 8 As shown, the turbulence generating device includes a front section shaft body 10, one end of which is connected to the air outlet of the compressor 1. The other end of the front section shaft body 10 is connected to one end of the middle section shaft body 35 through a vertical bearing 23, the other end of the middle section shaft body 35 is an inclined surface, and the inclined surface is connected to one end of the final section shaft body 25 through an inclined surface bearing 24, and the final section shaft body 25 is connected to the constant volume bomb body 30. A passive fan is provided at the outlet of the other end of the final section shaft body 25 to send the airflow into the constant volume bomb body 30. A circular partition is provided in the end of the front section shaft body 10 connected to the compressor 1, and the circular partition is used for opening and closing the internal channel of the front section shaft body 10, and the circular partition is rotated by a motor. When the compressor 1 is started, the circular partition is rotated and opened under the drive of the motor output shaft, which does not affect the compressed airflow entering the turbulence generating device. After passing through the turbulence generating device, the airflow is changed direction. Sealing rubber rings are provided at the connection between the front shaft 10 and the compressor 1, and at the connection between the outlet of the rear shaft 25 and the constant volume bomb body 30. The vertical bearing 23 and the inclined bearing 24 are respectively provided with the motor 14 on the rotating part. Figure 7 and Figure 8As shown, the vertical bearing 23 is equipped with a motor 14, which is connected to the wheel 15 through the output shaft of the motor 14. When the wheel 15 rotates, it drives the middle section shaft 35 to rotate, so as to change the direction of the inclined surface of the middle section shaft 35; the inclined surface bearing 24 is a normal bearing installed on the inclined surface of the middle section shaft 35. The motor 14 can also be installed at the inclined surface bearing 24 to change the direction of the last section shaft 25. By controlling the positive and negative directions of the motor 14, the rotation of the middle section shaft 35 and the last section shaft 25 is driven. By rotating the two shafts to change the outlet wind direction of the passive fan at the outlet of the last section shaft 25, the outlet of the last section shaft 25 can produce a large pointless rotation through the superimposed rotation of the two shafts.

[0028] After the scroll compressor 1 inhales gas through the air inlet 8, it vortex-compresses the gas and then injects the airflow into the interior of the constant volume bomb body 30 through the turbulence generating device. The airflow drives the passive fan at the outlet of the turbulence generating device to rotate, and the generated airflow forms a turbulent environment inside the bomb. The turbulent environment inside the constant volume bomb body 30 is adjusted by adjusting the outlet direction of the turbulence generating device. When an isotropic turbulent environment is required, the opening of the turbulence generating device is adjusted to a symmetrical position. At this time, the wind blown out by the turbulence generating device forms an isotropic turbulent environment inside the constant volume bomb body 30; when it is necessary to create an anisotropic turbulent environment, the vertical bearing 23 and the bevel bearing 24 of the rotating turbulence generating device are used to make the airflow ejected from the airflow outlet reach different angles, thereby creating an anisotropic turbulent environment.

[0029] The strength of turbulent flow is expressed by dimensionless turbulence (I). In a turbulent field, the instantaneous velocity at a certain point is ( x,y represents the coordinates of this point), when all time velocities are averaged, that is, .

[0030] Instantaneous speed The average velocity components in two orthogonal directions (x, y) are: (1) (2) (3) Fluctuation velocity is an important parameter for describing turbulence characteristics, which is called the root mean square of the pulsation velocity. , To express the magnitude scale of turbulence intensity.

[0031] (4) (5) The single-point turbulence intensity is defined as .

[0032] (6) The dimensionless turbulence intensity is expressed as .

[0033] I= (7) By changing the power of compressor 1, the turbulent flow field can be changed. speed in order to control the turbulence intensity.

[0034] The temperature control system realizes the temperature control of the constant volume bomb body 30 through electric heating and external circulating heat dissipation. The temperature control system includes a heat dissipation water tank 4 and a plurality of electric heating rods 6, and the plurality of electric heating rods 6 are inserted inside the constant volume bomb body 30. One end of the heat dissipation water tank 4 is connected to one end of the water inlet pipe 2 through the water pump 3, and the other end of the water inlet pipe 2 is connected to the liquid pipeline laid inside the constant volume bomb body 30. The other end of the heat dissipation water tank 4 is connected to one end of the drain pipe 5, and the other end of the drain pipe 5 is connected to the liquid pipeline laid inside the constant volume bomb body 30. Fig. 9 As shown, the liquid pipeline is pre-buried inside the bomb body, and the cooling speed is mainly increased by the liquid flow rate. The liquid pipeline adopts a two-way connection. After entering from the water inlet pipe 2, it passes through the interior of the constant volume bomb body 30 from both ends of the constant volume bomb body 30, and converges at the pipe mouth of the drain pipe 5. After being gathered into a pipeline, it flows out from the drain pipe 5. The water pump 3 and the heat dissipation water tank 4 are both arranged in the box body, and the compressor 1 is connected to the top of the box body through the support rod 7, and the support rod 7 plays the role of supporting the compressor 1.

[0035] The temperature control system is started by setting the experimental environment temperature through a computer. When the temperature is lower than the set value, the water pump 3 is suspended, and the heating function is realized by controlling the electric heating rod 6. The temperature gradually rises. When the temperature setting value is reached, the electric heating rod 6 is turned off, the temperature is within the normal range, and the constant volume bomb body 30 is in a normal state. When the temperature is higher than the set value, the electric heating rod 6 is turned off, the water pump 3 is started, and the temperature is lowered by the flow of liquid in the liquid pipeline. This scheme ensures that the temperature is always within the set temperature range.

[0036] The detachable window mechanism is used to observe the combustion state inside the constant volume bomb body 30 as well as monitor the ignition and ion current fluctuations. The detachable window mechanism includes a plurality of detachable end covers, which are installed in the six directions of the front, back, left, right, up and down of the constant volume bomb body 30. The center position of the detachable end cover is a transparent explosion-proof glass or a metal plate, and a sensor installation hole is reserved in the center of the metal plate. When the center position of the detachable end cover is a transparent explosion-proof glass, the visualization of the experimental process inside the bomb and the recording and storage of the dynamic data of the flame combustion state can be realized through the imaging system. Figure 4 , Figure 5As shown, the imaging system is used to record the internal experimental process of the constant volume bomb body 30. The imaging system includes a light source 18. After the light source 18 is emitted and scattered by the convex mirror 19, the light spot is projected into the lens of the high-speed camera 22 through the main reflector 16 through the transparent glass and falls on the secondary reflector 17, and then the light spot is projected into the lens of the high-speed camera 22 through the concave mirror 20 and the knife edge 21. The light source 18 is emitted, and the light source 18 is scattered by the convex mirror 19 to reach a beam of light spots with a larger range and fall on the main reflector 16. The main reflector 16 is a plane mirror. The light spot is completely passed through the transparent glass of the constant volume bomb body 30 by the main reflector 16 and falls on the secondary reflector 17. At this time, the secondary reflector 17 projects the light spot to the concave mirror 20 after passing through the knife edge 21, and then projects the light spot into the lens of the high-speed camera 22, so that the internal experimental process of the bomb can be completely recorded.

[0037] The sensor mounting hole of the removable end cover symmetrically arranged up and down is installed with an ignition electrode 11 with an adjustable gap function, and the sensor mounting hole of the removable end cover symmetrically arranged left and right is installed with a flame ion current collection device. Fig.11 As shown, the ignition electrode 11 is connected with a nut through a thread, and the nut is fixed at the sensor mounting hole. The length of the ignition electrode 11 is changed by changing the screwing depth of the ignition electrode 11 and the nut to complete the adjustment of the gap between the two ignition electrodes 11. An ignition coil 9 is installed on the ignition electrode 11, and the energy of the ignition electrode 11 can be adjusted directly by setting the parameters of the ignition coil 9 on the ignition electrode 11 to achieve different degrees of ignition effect. The flame ion current acquisition device in the present invention is composed of three parts, including an ion current transmission end 13 installed on the sensor mounting hole, a bare electrode 12 extending from the ion current transmission end 13 to the inside of the constant volume bomb body 30, and a disc electrode installed at the end of the bare electrode 12. The present invention adopts a combination design of a bare electrode 12 and a disc electrode to increase the contact area with the combustion flame to achieve high acquisition accuracy of the flame ion current.

[0038] Fig.10 for Figure 2 Schematic diagram of the internal structure of the transparent glass in the middle. The flame ion current collection device inside the constant volume bomb body 30 uses a bare electrode 12 (left and right direction, ignition electrode 11 in the up and down direction) and adds a disk electrode to the bare electrode 12 to achieve a change in the electrode geometry, effectively increasing the measuring electrode area, where D is the diameter of the disk electrode. The bare electrode 12 is divided into a positive electrode and a negative electrode, and is also wrapped with an insulating layer.

[0039] The air intake and exhaust gas treatment system is used to evacuate the interior of the constant volume bomb body 30 and treat the combustion exhaust gas. The air intake and exhaust gas treatment system includes an air intake control mechanism and an exhaust gas treatment system, such as Figure 6As shown, the intake control mechanism includes an intake ratio controller 1 26, an intake electronic valve 27 and an intake ratio controller 2 28. The intake ratio controller 1 26, the intake electronic valve 27 and the intake ratio controller 2 28 are all connected to one end of the intake pipe 29, and the other end of the intake pipe 29 is connected to the inside of the constant volume bomb body 30. The constant volume bomb body 30 is connected to an exhaust pipe 31, and a vacuum pump 32 and an exhaust gas treatment system are arranged in parallel on the exhaust pipe 31. The exhaust gas treatment system includes an oxygen sensor 33 and a three-way catalytic converter 34 arranged on the exhaust pipe 31.

[0040] According to the set environment, the interior of the constant volume bomb body 30 is first evacuated. When the interior of the constant volume bomb body 30 is in a vacuum state, the air intake ratio controller 1 26, the air intake electronic valve 27, and the air intake ratio controller 2 28 complete the air distribution according to the experimental conditions, and all the electronic valves are closed.

[0041] The three-way catalytic converter 34 absorbs carbon oxides, nitrogen oxides, and incompletely burned fuel in the exhaust gas to ensure that the exhaust gas does not pollute the environment.

[0042] Therefore, the present invention discloses a remotely controlled and turbulence intensity and directionally controllable visual test constant volume bomb, comprising a constant volume bomb body 30, a turbulence generating device, a temperature control system, an intake and exhaust gas treatment system, a detachable window mechanism, an imaging system, and an integrated remote control system. The integrated remote control system comprises a computer, and an intake flow sensor, a temperature sensor, a cylinder pressure sensor, an oxygen sensor 33, a temperature control system, an ion current acquisition system, an intake and exhaust gas treatment system, and a dynamic data processing system are installed in the constant volume bomb body 30 to communicate with the computer. The computer realizes the functional coordination of each part, as well as the overall configuration of the experimental part, and performs real-time monitoring of the mixture combustion experimental process and dynamic data acquisition and analysis.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A remotely controlled and turbulence intensity and direction-controllable visual test constant volume bomb, Features: include The constant volume bomb body is connected to the air outlet of the compressor through a turbulence generating device, and the turbulence generating device is used to form a turbulence environment with controllable intensity and direction of various isotropic and anisotropic properties inside the constant volume bomb body; Temperature control system, which realizes temperature control of the constant volume bomb body through electric heating and external circulation heat dissipation; The air intake and exhaust gas treatment system is used to evacuate the interior of the constant volume bomb and detect and treat the exhaust gas; Integrated remote control system, used to remotely control the internal experiments of the constant volume bomb and monitor the experimental process of the constant volume bomb; The detachable window mechanism is used for observing the experimental process inside the constant volume bomb body and for dynamic monitoring of the turbulent combustion state and the flame ion current during the combustion process; The imaging system is used to record the turbulent combustion process of the mixture inside the constant volume bomb body.

2. According to claim 1, the remotely controlled and turbulence intensity direction-controllable visual test constant volume bomb, Features: The compressor is a vortex compressor, and the compressor and turbulence generating devices are both provided with a plurality of turbulence generating devices, the turbulence generating device comprises a front section shaft body, one end of the front section shaft body is connected to the air outlet of the compressor, the other end of the front section shaft body is connected to one end of the middle section shaft body through a vertical bearing, the other end of the middle section shaft body is an inclined surface, the inclined surface is connected to one end of the last section shaft body through an inclined surface bearing, and a passive fan is provided at the outlet of the other end of the last section shaft body; A circular partition is arranged inside one end of the front shaft body connected to the compressor, and the circular partition is used to open and close the internal channel of the front shaft body; Sealing rubber rings are provided at the connection between the front shaft and the compressor, and at the connection between the rear shaft and the constant volume bomb body.

3. The remotely controlled and turbulence intensity direction-controllable visual test constant volume bomb according to claim 1, Features: The temperature control system includes a heat dissipation water tank and several electric heating rods, which are inserted into the constant volume bomb body. One end of the heat dissipation water tank is connected to one end of a water inlet pipe through a water pump, and the other end of the water inlet pipe is connected to a liquid pipeline laid inside the constant volume bomb body. The other end of the heat dissipation water tank is connected to one end of a drain pipe, and the other end of the drain pipe is connected to the liquid pipeline laid inside the constant volume bomb body.

4. The remotely controlled and turbulence intensity direction-controllable visual test constant volume bomb according to claim 1, Features: The intake and exhaust gas treatment system includes an intake control mechanism, which includes an intake ratio controller 1, an intake electronic valve and an intake ratio controller 2. The intake ratio controller 1, the intake electronic valve and the intake ratio controller 2 are all connected to one end of the intake pipe, and the other end of the intake pipe is connected to the interior of the constant volume bomb body. The constant volume bomb body is connected to an exhaust pipe, and a vacuum pump and an exhaust gas treatment system are arranged in parallel on the exhaust pipe. The exhaust gas treatment system includes an oxygen sensor and a three-way catalytic converter arranged on the exhaust pipe.

5. The remotely controlled and turbulence intensity direction-controllable visual test constant volume bomb according to claim 1, Features: The detachable window mechanism comprises a plurality of detachable end covers, and the detachable end covers are installed in six directions of the constant volume bomb body, namely, front, back, left, right, up, down.

6. The remotely controlled and turbulence intensity direction-controllable visual test constant volume bomb according to claim 5, Features: The center position of the detachable end cover is a transparent explosion-proof glass or a metal plate, and a sensor installation hole is reserved in the center of the metal plate.

7. The remotely controlled and turbulence intensity direction-controllable visual test constant volume bomb according to claim 6, Features: An ignition electrode with an adjustable gap function is installed on the sensor installation hole of the removable end cover which is symmetrically arranged up and down.

8. The remotely controlled and turbulence intensity direction-controllable visual test constant volume bomb according to claim 7, Features: A flame ion current collection device is installed on the sensor installation hole of the detachable end cover which is symmetrically arranged on the left and right.

9. The remotely controlled and turbulence intensity direction-controllable visual test constant volume bomb according to claim 6, Features: The imaging system includes a light source. After being scattered by a convex mirror, the light spot is projected through the transparent explosion-proof glass of the detachable window by the main reflector and falls on the secondary reflector. The light spot is then projected into the lens of the high-speed camera through a concave mirror and a knife edge.

10. The remotely controlled and turbulence intensity direction-controllable visual test constant volume bomb according to claim 1, Features: The integrated remote control system includes a computer. An intake flow sensor, a temperature sensor, and a cylinder pressure sensor are installed in the constant volume bomb body. The constant volume bomb body, a temperature control system, an imaging system, a detachable window mechanism, and an intake and exhaust gas treatment system are connected to the computer.

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