CN217496563U - Multi-runner adjustable air injection system - Google Patents
Multi-runner adjustable air injection system Download PDFInfo
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- CN217496563U CN217496563U CN202221276297.0U CN202221276297U CN217496563U CN 217496563 U CN217496563 U CN 217496563U CN 202221276297 U CN202221276297 U CN 202221276297U CN 217496563 U CN217496563 U CN 217496563U
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Abstract
The utility model provides an adjustable air injection system of multithread way relates to the experimental technical field of multithread way jet performance test, has solved the air supply and has undulant, the technical problem of parameter unstability and parameter intercoupling interference. The multi-channel adjustable air injection system comprises an air source, a model spray pipe, a plurality of air injection channels, an emptying channel, an air injection adjusting assembly, an emptying adjusting assembly, a temperature sensor and a pressure sensor, wherein the air injection channels are connected in parallel and are connected between the air source and the model spray pipe; the emptying flow channel is connected to the outlet side of the gas source and is arranged in parallel with all the jet flow channels; the air injection adjusting assembly is arranged on each air injection flow channel; the emptying adjusting assembly is arranged on the emptying flow channel; and the temperature sensor and the pressure sensor are arranged at the inlet of the model spray pipe. The utility model is used for jet-propelled simulation, the during operation carries out substep decoupling zero with same air supply pressure/flow and adjusts, eliminates mutual interference when guaranteeing air supply stability, reaches required multithread way jet-propelled state fast.
Description
Technical Field
The utility model belongs to the technical field of the experimental technique of multithread way jet-propelled capability test and specifically relates to an adjustable air injection system of multithread way is related to.
Background
The multi-channel air injection system is simulated air injection equipment for performing an airplane air injection performance test, the core part for generating multi-channel air injection conditions is an air injection generation and regulation device, the air injection generation and regulation device is generated by utilizing a temperature regulation and pressure regulation part arranged on an effective air source pipeline, the multi-channel air injection parameters are realized by utilizing the air injection generation and regulation device to regulate air supply pressure/flow and temperature, the multi-channel air injection system is mainly used for building various air injection testers, composite air injection test beds and other test facilities, and the relevant parameters of each flow path are accurately and effectively controlled to realize the simulation of various air injection conditions. The air supply pressure/flow rate adjusting aim of the multi-channel air injection system is to adjust a plurality of flow path temperature and pressure parameters to specified parameter values in a short time and to maintain a continuous and uninterrupted stable air injection state.
At present, the parameter adjusting method in the multi-runner air injection system at home and abroad mainly comprises the following steps:
1) a single independent air source is provided according to the respective set parameter states of the multi-channel air injection to ensure that the air supply of the air source is relatively stable. The flow/pressure parameter adjusting interval is single, and the cost of each flow channel equipped with an independent air source is difficult to effectively control; the method is suitable for large-scale air injection test beds with less flow passages and low air injection quantity change amplitude.
2) The single air supply pressure source is used for supplying air to the multi-channel air injection pipeline simultaneously, the multiple adjusting valves are connected into the air injection pipeline, different pressure adjustment is completed, parameter mutual coupling interference exists when all valves are adjusted simultaneously, the air source is mostly a screw air compressor unit, the air source has loading and unloading processes, the stability of the air source is influenced, meanwhile, the air source fluctuation can be further coupled with the adjusting valves to form interference, the adjusting time is long, the parameter deviation fluctuation is large, and the air injection test bench is suitable for medium-scale air injection test benches with few channels.
3) The multi-channel air injection experiment table has the advantages that a single air source is used for multi-channel air injection, the appropriate volume air storage tanks are added for pressure stabilization in each channel, air source fluctuation interference is reduced, multi-channel air injection is independently adjusted, the volume of the air storage tanks is increased along with the air injection quantity, the required area of a hardware field is large, and the multi-channel air injection experiment table is suitable for a multi-channel air injection experiment table with small flow.
The methods have the risk that the fluctuation of the air source influences the stability of the parameters, and when the cost-saving single air source is selected for air supply, the problem of mutual coupling interference of parameters of the regulating valve exists, so that how to solve the air source and the coupling interference becomes the key for the success of a multi-channel air injection test.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an adjustable air injection system of multithread way to solve the air supply fluctuation that exists among the prior art, the technical problem of parameter unstability and parameter mutual coupling interference.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a pair of adjustable air injection system of multithread way, including air supply, model spray tube, many gas injection flow ways, evacuation runner, jet-propelled adjusting part, evacuation adjusting part, temperature sensor and pressure sensor, wherein:
the jet flow channels are arranged in parallel and connected between the air source and the model jet pipe so as to form inner and outer ring jet simulation at the model jet pipe;
the emptying flow channel is connected to the outlet side of the gas source and is arranged in parallel with all the jet flow channels;
the jet adjusting assembly is arranged on each jet flow channel;
the emptying adjusting assembly is arranged on the emptying flow passage;
the temperature sensor and the pressure sensor are installed at the inlet of the model spray pipe.
As a further improvement of the utility model, the evacuation regulating assembly comprises a second control valve and a second self-operated pressure reducing valve which are arranged in sequence.
As a further improvement of the present invention, the evacuation regulating assembly further includes a second muffler connected to an outlet side of the second self-operated pressure reducing valve.
As a further improvement, the utility model also comprises a bypass flow channel, bypass flow channel one end is connected the second control valve entrance side, the other end is connected the second is from forcing type relief pressure valve outlet side, just be provided with the relief valve on the bypass flow channel.
As a further improvement, the jet-propelled adjusting part comprises a switch butterfly valve, a flowmeter, a first self-operated pressure reducing valve, a first control valve, a pipeline heater and a first silencer which are arranged in sequence.
As a further improvement of the utility model, the flowmeter is a medium flow meter.
As a further improvement of the utility model, the pipeline heater is an overheating type heater.
As a further improvement of the utility model, the second control valve is a pressure control valve.
As a further improvement of the present invention, the first control valve is a pressure and flow control valve.
As a further improvement, the air source is a centrifugal air compressor.
The utility model provides an adjustable air injection system's of multithread way regulation method, including following step:
step S1, presetting the adjustment logic information between the jet target value and the jet adjusting component and the emptying adjusting component in the control module part of the multi-channel adjustable jet system;
step S2, initial adjustment: opening an air source, forming partial pipe resistance load through a first self-operated reducing valve in the air injection adjusting assembly, and adjusting a first adjusting valve when the pipe resistance load initially approaches an air injection target value interval specified by each air injection flow channel so that an air injection parameter value meets a specified target value of a test requirement;
step S3, closed loop adjustment: after the step S2 is completed, when the test state needs to be changed to adjust the target value, the multi-channel adjustable air injection system performs closed-loop control type real-time adjustment according to the preset adjustment logic information in the step S1, so that the air injection parameter value in the air injection channel follows the target value in real time.
And step S4, when the multi-runner adjustable gas injection system is in low-load operation, exhausting redundant gas generated by the gas source through the exhaust runner.
Compared with the prior art, the utility model following beneficial effect has:
the utility model provides an adjustable air injection system of multithread way, the adjustable air injection system of multithread way that can eliminate air supply interference and solve simultaneously and adjust coupling interference, through setting up air discharge duct and evacuation adjusting part, and there is closed-loop control's relation in second control valve in the air discharge duct and air supply pressure, can keep working under centrifugal air compressor machine rated output pressure/flow all the time, there is not the loading because of centrifugal air compressor machine's theory of operation, the uninstallation process, and it is comparatively stable to export under rated operating condition, cooperate the first formula relief pressure valve in the air discharge duct, further play the effect of steady voltage, thereby need not be equipped with the gas holder and also can effectively solve the problem of air supply stability, realize multithread way air discharge pressure/flow, the temperature quick response, and this set of air injection system still has the constitution is simple, parameter adjustment is convenient, Stable and reliable operation, high automation degree and good safety.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a process schematic diagram of the multi-flow-channel adjustable air injection system of the present invention.
In the figure 1, a butterfly valve is switched on and off; 2. a flow meter; 3. a first self-operated pressure reducing valve; 4. a first control valve; 5. A pipe heater; 6. a first muffler; 7. a second control valve; 8. a second self-operated pressure reducing valve; 9. a safety valve; 10. a second muffler; 11. a model nozzle; 12. and (4) a gas source.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the utility model provides an adjustable gas injection system of multithread way, including air supply 12, model spray tube 11, many gas injection flow ways, evacuation runner, jet-propelled adjusting part, evacuation adjusting part, temperature sensor and pressure sensor, wherein:
the jet flow channels are arranged in parallel and connected between the air source 12 and the model jet pipe 11 so as to form inner and outer ring jet simulation at the model jet pipe 11;
the emptying flow channel is connected to the outlet side of the air source 12 and is arranged in parallel with all the jet flow channels;
the air injection adjusting assembly is arranged on each air injection flow channel;
the emptying adjusting assembly is arranged on the emptying flow channel;
a temperature sensor and a pressure sensor are installed at the inlet of the model nozzle 11.
The device is characterized by further comprising a control module, the control module is realized by programming products in the prior art, the control module can preset parameters, and preset the air injection target value and the adjusting parameters of the air injection adjusting assembly and the evacuation adjusting assembly which need to be controlled when different target values are reached, so that real-time parameter information transmitted by the temperature sensor and the pressure sensor can be compared with the adjusting parameters of the adjusting assemblies with the corresponding different target values and then timely adjusted when the device is in actual use, and the real-time air injection parameters of each flow channel and the corresponding sensors of the air injection outlet form a closed-loop control loop, so that a closed-loop adjusting function is realized.
It should be noted that, as shown in fig. 1, an embodiment is illustrated in which two air jet channels are provided, and the two air jet channels are respectively connected with an inner cavity and an outer cavity of the model air jet pipe 11, so that inner and outer ring air jets are formed at the model air jet pipe 11.
As an optional embodiment of the present invention, the evacuation regulating assembly includes a second control valve 7 and a second self-operated pressure reducing valve 8, which are sequentially disposed.
As an optional embodiment of the present invention, the evacuation regulating assembly further includes a second muffler 10 connected to an outlet side of the second self-operated pressure reducing valve 8.
The device also comprises a bypass flow channel, one end of the bypass flow channel is connected to the inlet side of the second control valve 7, the other end of the bypass flow channel is connected to the outlet side of the second self-operated reducing valve 8, and a safety valve 9 is arranged on the bypass flow channel.
Further, the jet regulating assembly comprises a switch butterfly valve 1, a flowmeter 2, a first self-operated reducing valve 3, a first control valve 4, a pipeline heater 5 and a first silencer 6 which are arranged in sequence.
The flow meter 2 is a medium flow meter 2.
The pipeline heater 5 is an overheating heater, can realize rapid heating, and has the heating speed of 3K/s.
The second control valve 7 is a pressure control valve.
The first control valve 4 is a pressure and flow control valve.
The air source 12 is a centrifugal air compressor.
It should be noted that, the control valve in the present invention is a regulating valve with adjustable parameters.
The utility model provides an adjustable air injection system of multithread way, the adjustable air injection system of multithread way that can eliminate air supply 12 and disturb and solve simultaneously and adjust coupling interference, through setting up air discharge duct and evacuation adjusting part, and there is closed-loop control's relation in second control valve 7 in the air discharge duct and air supply 12 pressure, can keep working under centrifugal air compressor machine rated output pressure/flow all the time, there is not loading because of centrifugal air compressor machine's theory of operation, the uninstallation process, and it is comparatively stable to export under rated operating condition, first formula relief pressure valve 3 in the cooperation gas discharge duct, further play the effect of steady voltage, thereby need not be equipped with the gas holder and also can effectively solve the problem of air supply 12 stability, realize multithread way pressure/flow, the temperature quick response, and this set of air injection system still has the constitution simply, the parameter is adjusted conveniently, Stable and reliable operation, high automation degree and good safety.
The utility model provides an adjustable air injection system's of multithread way adjusting method, including following step:
step S1, presetting the adjustment logic information between the jet target value and the jet adjusting component and the emptying adjusting component in the control module part of the multi-channel adjustable jet system;
step S2, initial adjustment: opening an air source 12, forming partial pipe resistance load through a first self-operated reducing valve 3 in the air injection adjusting assembly, and adjusting a first adjusting valve when the pipe resistance load initially approaches an air injection target value interval specified by each air injection flow channel so that an air injection parameter value meets a specified target value of a test requirement;
step S3, closed loop adjustment: after the step S2 is completed, when the test state needs to be changed to adjust the target value, the multi-channel adjustable air injection system performs closed-loop control type real-time adjustment according to the preset adjustment logic information in the step S1, so that the air injection parameter value in the air injection channel follows the target value in real time.
And step S4, when the multi-runner adjustable gas injection system is in low-load operation, emptying redundant gas generated by the gas source 12 through the exhaust runner.
Example 1:
in this embodiment, a multi-flow-channel adjustable air injection system is provided, which includes an air source 12, a first self-operated pressure reducing valve, a second self-operated pressure reducing valve, a first control valve, a second control valve, a flow meter, a safety valve, a temperature sensor, a pressure sensor, a pipeline heater, a first silencer, a second silencer, and related pipelines, wherein the air source 12 is formed by connecting a centrifugal air compressor with minimal fluctuation of rated working state as the air injection air source 12, so as to ensure the stability of the air source 12, the centrifugal air compressor is always kept in a rated output state with stable output by additionally arranging the second self-operated pressure reducing valve, the second control valve, the bypass pipeline, the safety valve, and the second silencer on an evacuation flow channel, the pressure regulating and interlocking pressure sensor on the evacuation flow channel forms a closed-loop control circuit, the second self-operated pressure reducing valve is connected after pressure regulation by the second control valve, an outlet of the second self-operated pressure reducing valve is connected with the second silencer on the pipeline, and the gas after being silenced by the second silencer is exhausted to the atmosphere, and the two-way flow channel system for the test is taken as an example to specifically describe that the gas source outlet pipeline is divided into three ways which are respectively connected to a first flow channel, a second flow channel and an exhausting flow channel, wherein the first flow channel and the second flow channel are firstly connected with a first self-operated reducing valve, the outlet of the first flow channel and the second flow channel is connected with a first control valve, then the first flow channel and the second flow channel enter a high-temperature section to be connected with a pipeline heater, the outlet of the pipeline heater is connected with a first silencer of a high-temperature-resistant pipeline, and then the first flow channel and the second flow channel are connected into a model spray pipe or a test piece corresponding to interfaces.
During the test, the switch butterfly valves 1 of all the flow channels are opened, after a medium passes through the mass flow meter 2, the medium is subjected to pressure stabilization and pressure reduction through the first self-operated pressure reducing valves 3, then closed-loop control and adjustment are performed through the first control valves 4 of the pressure/flow of all the flow channels, parameters are set to be target values, the temperature is adjusted to be target temperature through the pipeline heaters 5 arranged on all the flow channels, finally the gas flows through the first silencers 6 to reduce noise, and the gas meeting the requirements of the test parameters is connected into the model spray pipe 11/test piece to perform a multi-flow-channel gas injection test. The process realizes the multi-channel air injection temperature and pressure regulation task and completes the decoupling regulation of pressure/flow in the multi-channel. When the decoupling adjustment is completed, redundant gas is adjusted through a second control valve 7 in an emptying flow channel, then the second self-operated pressure reducing valve 8 is connected for pressure reduction, the air pressure of the gas to be emptied is slightly higher than the atmospheric pressure, the main effect is to reduce the noise pollution of a factory boundary, the air after pressure reduction is connected into a second silencer 10 for further noise reduction, and finally the air is emptied to the atmosphere, so that the test can be started immediately, the test state can be continuously kept stable, and the reliability of the test result is high.
The decoupling method of the multi-channel adjustable jet system comprises the steps that in the first step, a part of pipe resistance load is formed through a first self-operated pressure reducing valve in a multi-channel, the specified pressure/flow interval of each channel is approached preliminarily, then a pressure/flow regulating valve (namely a first control valve) is used for enabling the pressure/flow parameter value to meet the specified value of the test requirement, and at the moment, each channel parameter and a corresponding sensor of a jet outlet form a closed-loop control loop. Through the arrangement, under the condition that the pressure/flow of the air flow provided by the air source 12 is sufficient, the regulating valve with small adjustable ratio can be selected and matched under the action of the second self-operated reducing valve, and the regulating valve with small adjustable ratio has high regulating precision, so that the high precision of air injection parameters can be ensured, the cost is low, and meanwhile, when the test state (the action of the regulating valve) is changed, the regulating valve adopts a closed-loop control method to follow the target value in real time, thereby eliminating the system error to the maximum extent and ensuring the regulating effect, redundant air is discharged through the emptying flow channel, and the pressure/flow parameters of all the flow channels do not interfere with each other when the pressure/flow of the air source 12 is sufficient.
The flow channel regulating valves are respectively regulated in respective flow channels, the coupling interference phenomenon occurs at a high probability on the premise of adopting a single air source, however, because the first self-operated pressure reducing valve is arranged in front of each flow channel regulating valve, the pressure behind the valves can be set to approach a target value, and then the regulating valves accurately regulate the pressure, so that the upstream pressure change interval of the regulating valves is limited when the regulating valves act, the phenomenon that the pressure before the valves changes in a large range in a short time can not occur, the pressure before the pressure reducing valves is always continuously stable, and the phenomenon (coupling) that the pressure/flow of each flow channel continuously fluctuates is avoided.
When the flow channel pressure/flow control equipment works, the emptying flow channel is arranged, the second control valve in the emptying flow channel and the air source pressure sensor form a closed-loop control loop, when the flow channel pressure/flow control valve works, the air source pressure rises/falls to promote the opening degree of the second control valve in the emptying flow channel to change so as to stabilize the air source pressure, and the incoming flow pressure is always kept in a stable range, so that the fluctuation interference of the air source is eliminated, each flow channel pipeline is provided with an independent pipeline heater to meet the requirement of the respective air injection temperature and achieve the purpose of adjusting the medium temperature, an effective multi-flow-channel air injection state is formed after the system stably runs, the system works continuously and stably, and the test parameters are reliable;
the air injection system of the utility model has simple principle, no special parts, easy processing and small space occupation of the device implementation; the multi-channel jet equipment can realize the function of quick parameter response, further simplify the multi-channel jet test method and further expand the test range.
It should be noted that "inward" is a direction toward the center of the accommodating space, and "outward" is a direction away from the center of the accommodating space.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship indicated based on the orientation or positional relationship shown in fig. 1, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides an adjustable air injection system of multithread way, its characterized in that includes air supply, model spray tube, many spouting flow ways, evacuation runner, jet-propelled adjusting part, evacuation adjusting part, temperature sensor and pressure sensor, wherein:
the jet flow channels are arranged in parallel and connected between the air source and the model jet pipe so as to form inner and outer ring jet simulation at the model jet pipe;
the emptying flow channel is connected to the outlet side of the gas source and is arranged in parallel with all the jet flow channels;
the jet adjusting assembly is arranged on each jet flow channel;
the emptying adjusting assembly is arranged on the emptying flow channel;
the temperature sensor and the pressure sensor are installed at the inlet of the model spray pipe.
2. The multiple flow path tunable gas injection system of claim 1, wherein the evacuation regulator assembly comprises a second control valve and a second self-operated pressure relief valve arranged in series.
3. The multiple flow path tunable gas injection system of claim 2, wherein the evacuation regulation assembly further comprises a second muffler connected to an outlet side of the second self-operated pressure relief valve.
4. The multiple flow path adjustable gas injection system according to claim 2, further comprising a bypass flow path, wherein one end of the bypass flow path is connected to an inlet side of the second control valve, the other end of the bypass flow path is connected to an outlet side of the second self-operated pressure reducing valve, and a safety valve is disposed on the bypass flow path.
5. The multiple flow channel adjustable gas injection system of claim 1, wherein the gas injection adjustment assembly comprises a switch butterfly valve, a flow meter, a first self-operated pressure reducing valve, a first control valve, a pipe heater and a first silencer which are arranged in sequence.
6. The multiple flow path tunable gas injection system of claim 5, wherein the flow meter is a media flow meter.
7. The multiple flow path tunable gas injection system of claim 5, wherein the duct heater is a superheating heater.
8. The multiple flow path tunable gas injection system of claim 4, wherein the second control valve is a pressure control valve.
9. The multiple flow path tunable gas injection system of claim 5, wherein the first control valve is a pressure and flow control valve.
10. The multiple flow path adjustable gas injection system of claim 1, wherein the gas source is a centrifugal air compressor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221276297.0U CN217496563U (en) | 2022-05-24 | 2022-05-24 | Multi-runner adjustable air injection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221276297.0U CN217496563U (en) | 2022-05-24 | 2022-05-24 | Multi-runner adjustable air injection system |
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| CN217496563U true CN217496563U (en) | 2022-09-27 |
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