阅读说明：本技术 一种循环式双调模拟热流系统 (Circulating type double-regulation simulation heat flow system ) 是由 姜春林 孙冰岩 于 2020-07-13 设计创作，主要内容包括：本发明公开一种双调模拟热流系统,包括：热流成分调节腔,具有进水口、进气口、热流循环出口和热流循环入口；进水口连接进水管路,进气口连接进气管路；换热器,包括换热体,换热体内形成有换热腔,换热腔内设置有所述换热管道,所述换热管道的进口与所述热流成分调节腔的热流循环出口连接,所述换热管道的出口及热流成分调节腔的热流循环入口均连接试验舱。用于解决现有技术中无法实现大流量、大热流条件下多模态、多工况的进气道流量捕获、压气机气动载荷、金属着火与燃烧试验等问题,实现对试验件真实工作条件的模拟。(The invention discloses a double-regulation simulation heat flow system, which comprises: a heat flow component adjustment cavity having a water inlet, an air inlet, a heat flow circulation outlet and a heat flow circulation inlet; the water inlet is connected with a water inlet pipeline, and the air inlet is connected with an air inlet pipeline; the heat exchanger comprises a heat exchange body, wherein a heat exchange cavity is formed in the heat exchange body, the heat exchange cavity is internally provided with the heat exchange pipeline, the inlet of the heat exchange pipeline is connected with the heat flow circulation outlet of the heat flow component adjusting cavity, and the outlet of the heat exchange pipeline and the heat flow circulation inlet of the heat flow component adjusting cavity are both connected with the test chamber. The device is used for solving the problems that multi-mode and multi-working-condition air inlet channel flow capture, pneumatic load of a gas compressor, metal ignition and combustion tests and the like can not be realized under the conditions of large flow and large heat flow in the prior art, and the simulation of the real working conditions of a test piece is realized.)

1. A bi-tonal simulated heat flow system, comprising:

a heat flow component adjustment cavity having a water inlet, an air inlet, a heat flow circulation outlet and a heat flow circulation inlet; the water inlet is connected with a water inlet pipeline, and the air inlet is connected with an air inlet pipeline;

the heat exchanger comprises a heat exchange body, wherein a heat exchange cavity is formed in the heat exchange body, the heat exchange cavity is internally provided with the heat exchange pipeline, the inlet of the heat exchange pipeline is connected with the heat flow circulation outlet of the heat flow component adjusting cavity, and the outlet of the heat exchange pipeline and the heat flow circulation inlet of the heat flow component adjusting cavity are both connected with the test chamber.

2. The bi-tuned simulated heat flow system of claim 1 wherein a heating circuit is connected between the heat flow circulation inlet of the heat flow component tuning chamber and the test chamber;

the heat exchange cavity of the heat exchanger is provided with an inlet and an outlet, the inlet of the heat exchange cavity is connected with a fuel gas supply pipeline, and the outlet of the heat exchange cavity is connected with a heating pipeline to heat test heat flow discharged by the test chamber and flowing to the heat flow circulation inlet.

3. The bi-regulated simulated heat flow system of claim 2 wherein said heating circuit comprises a first manifold connecting said heat flow component regulation chamber heat flow circulation inlet to said test chamber;

an outlet valve is arranged on the first branch pipe close to the heat flow circulation inlet, an inlet valve is arranged on the first branch pipe close to the test chamber, and a heat flow pump is arranged on the first branch pipe between the outlet valve and the inlet valve to adjust the flow rate of heat flow;

the outer wall of the first branch pipe is coated with a heating sleeve, and the heating sleeve is connected with an outlet of the heat exchange cavity.

4. The dual tone simulated heat flow system of claim 3, wherein said gas supply line comprises a combustion chamber; the combustion chamber is provided with an inlet, a fuel gas outlet and a heat flow circulating inlet;

the inlet of the combustion chamber is connected with an air inlet device, the gas outlet of the combustion chamber is connected with the inlet of the heat exchange cavity, the heat flow circulation inlet of the combustion chamber is connected with a circulation gas supply pipeline, and the circulation supply pipeline is respectively connected with the heating sleeve and the heat exchange cavity.

5. The bi-regulated simulated heat flow system of claim 4 wherein the air intake means comprises a fuel means and an air means; the fuel device comprises a main fuel pipe and an auxiliary fuel pipe which are respectively connected with the combustion chamber; the air device comprises a main air pipe and an auxiliary air pipe which are respectively connected with the combustion chamber; and control valves are arranged on the main fuel pipe, the auxiliary fuel pipe, the main air pipe and the auxiliary air pipe.

6. The bi-regulated simulated heat flow system of claim 4 wherein said recycle supply line comprises a main pipe, a second branch pipe, a third branch pipe, a fourth branch pipe; the main pipe is connected with a combustion chamber heat flow circulation inlet and a tail gas treatment device; the second branch pipe is connected with the main pipe and the heat exchange cavity; the third branch pipe is connected with the main pipe and the test cabin, and the fourth branch pipe is connected with the main pipe and the heating sleeve.

7. The bi-regulated simulated heat flow system of claim 6 wherein the outlet of the heat exchange tube of said heat exchanger is connected to the test chamber by a fifth manifold; the third branch pipe is connected with the test chamber through the fifth branch pipe;

the main pipe is provided with a pump at a position close to a hot flow circulation inlet of the combustion chamber, and the main pipe is provided with control valves between the pump and the second branch pipe, between the fourth branch pipe and the tail gas treatment device, and on the third branch pipe, the fourth branch pipe and the fifth branch pipe.

8. The dual modulation simulated heat flow system of claim 1 wherein said inlet line comprises a gas canister and a flow valve connected in sequence by piping, the gas canister having a fill/drain valve, a pressure gauge and a safety valve mounted thereon, the piping between the gas canister and the flow valve and between the flow valve and the heat flux composition regulating chamber having control valves mounted thereon, respectively.

9. The dual modulation simulated heat flow system of claim 1 wherein said water inlet line comprises a tank, a flow valve, a pump sequentially connected by pipes, the tank having a fill/drain valve and a level gauge mounted thereon, the pipes between the tank and the flow valve and between the pump and the heat flow composition regulating chamber having control valves mounted thereon, respectively.

10. The binary simulated heat flow system of claim 9, wherein said control valve comprises a shut-off valve and said pump comprises a water pump or a heat flow pump.

Technical Field

The invention relates to the technical fields of air inlet channel flow capture, pneumatic load of an air compressor, metal ignition and the like, in particular to a circulating type double-regulation simulated heat flow system.

Background

In the experimental research of air inlet channel flow capture, air compressor pneumatic load, metal ignition and the like, the simulated incoming flow at the inlet needs to meet the requirements of incoming flow parameters such as temperature, pressure, flow and the like. In the large-flow and large-heat-flow conditions such as an aircraft engine compressor test, the flow of the simulated incoming flow reaches 3-80 kg/s, the temperature reaches 500-800 ℃, and the requirements of an air source and a heat source are large, so that the occupied area of an air supply system and a heating system is large, the investment is high, the preparation time of a single test is long, and the test cost is high. The invention adopts the air circulation utilization of the simulated incoming flow, thereby reducing the equipment pressure of the air supply system; the method of partial circulation of the gas of the heater and preheating/heat preservation of the rest part is adopted, so that the heat flow utilization rate is improved, and the load requirement of the heater is reduced.

Disclosure of Invention

The invention provides a circulating type double-regulation simulation heat flow system which is used for overcoming the defects of large occupied area of equipment, high test cost and the like under the conditions of high flow and large heat flow test in the prior art. The requirement on equipment of the gas supply system is reduced by recycling the simulated incoming flow; the device requirement on the heater is reduced by recycling the fuel gas heat flow of the heater. The requirement on equipment of the gas supply system is reduced by recycling the simulated incoming flow; the device requirement on the heater is reduced by recycling the fuel gas heat flow of the heater.

To achieve the above object, the present invention provides a dual-modulation analog heat flow system, comprising:

a heat flow component adjustment cavity having a water inlet, an air inlet, a heat flow circulation outlet and a heat flow circulation inlet; the water inlet is connected with a water inlet pipeline, and the air inlet is connected with an air inlet pipeline;

the heat exchanger comprises a heat exchange body, wherein a heat exchange cavity is formed in the heat exchange body, the heat exchange cavity is internally provided with the heat exchange pipeline, the inlet of the heat exchange pipeline is connected with the heat flow circulation outlet of the heat flow component adjusting cavity, and the outlet of the heat exchange pipeline and the heat flow circulation inlet of the heat flow component adjusting cavity are both connected with the test chamber.

According to the double-regulation simulated heat flow system provided by the invention, air and moisture are respectively injected into the heat flow component regulating cavity through the water inlet pipeline and the air inlet pipeline, the air humidity in the test chamber can be flexibly regulated according to the weather conditions, the simulated incoming flow in the heat flow component regulating cavity enters the test chamber through the heat exchange channel of the heat exchanger through the heat flow circulation outlet so as to simulate the incoming flow component, part of high-temperature fuel gas of the heater returns to the mixing cavity of the heater for cyclic utilization through the heat flow pump after flowing through the heat exchanger, and the rest part of the high-temperature fuel gas flows through the preheating/heat-insulating sleeve to realize.

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 the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic diagram of a bi-modulation simulated heat flow system according to an embodiment of the present invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes 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, for example two,

three, etc., unless explicitly specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; the connection can be mechanical connection, electrical connection, physical connection or wireless communication connection; 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.