Air source humidity measuring tool for aircraft environment control system simulation test
By designing an air source humidity measurement tool including bypass duct, cooling component and measurement component, the problem of direct measurement of air source humidity in the simulation test of the aircraft environmental control system is solved, and the accuracy of high temperature and high flow velocity conditions is achieved Humidity measurement.
Patent Information
- Application Number
- CN202421140858.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2024-04-09
- Filing Date
- 2024-05-23
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-23
AI Technical Summary
In the simulation test of the aircraft environmental control system, it is difficult to directly measure the humidity at the air source because the high temperature and high flow rate air flow exceeds the operating temperature range of the temperature and humidity sensor, and the high flow rate affects the accuracy of humidity measurement.
A gas source humidity measurement tool including a bypass duct, a cooling assembly and a measurement assembly is designed. The cooling assembly uses a cylindrical outer cylinder and coil to reduce the airflow temperature; the measuring assembly uses a temperature and humidity sensor to measure humidity at appropriate temperatures and flow rates.
It realizes accurate measurement of air source humidity under high temperature and high flow velocity conditions, avoids the problems of sensor overload and inaccurate measurement, and is simple in structure, reliable in function, and easy to manufacture and place.
Smart Images
Figure CN222496656U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of simulation test of aircraft environment control system, and more specifically is an air source humidity measurement tool for simulation test of aircraft environment control system. Background Art
[0002] The simulation test of the aircraft environmental control system involves the simulation of wet working conditions. Due to the requirements of the working conditions, the airflow supplied by the air source is often in a state of high temperature and high flow rate. If the humidity at the air source is measured directly, the temperature here will far exceed the operating temperature range of the temperature and humidity sensor probe, and the higher flow rate will affect the accuracy of the humidity measurement.
[0003] Therefore, it is necessary to study an air source humidity measurement tool with simple structure, reliable function, easy manufacturing and flexible placement. Summary of the invention
[0004] The purpose of the utility model is to overcome the shortcomings of the above-mentioned background technology and to provide an air source humidity measurement tool for a simulation test of an aircraft environmental control system.
[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: an air source humidity measurement tool for aircraft environmental control system simulation test, characterized in that: it includes a bypass air duct, a cooling component and a measurement component;
[0006] The cooling assembly comprises at least one cylindrical outer tube and a coil located inside the cylindrical outer tube; the left end of the coil is provided with a first external threaded joint extending out of the left side of the cylindrical outer tube, and the right end is provided with a second external threaded joint extending out of the right side of the cylindrical outer tube;
[0007] The measuring assembly includes a thin-walled cylinder of a cavity structure, a third external threaded joint arranged on the left side of the thin-walled cylinder, a butt-welded flange arranged on the right side of the thin-walled cylinder, and a sensor joint arranged on the top of the thin-walled cylinder, wherein a temperature and humidity sensor is installed at the sensor joint;
[0008] When the number of the cylindrical outer cylinder is one, the first external thread joint of the cylindrical outer cylinder is communicated with the bypass air duct, and the second external thread joint of the cylindrical outer cylinder is communicated with the third external thread joint;
[0009] When the number of cylindrical outer cylinders is greater than one, the cylindrical outer cylinders are connected in series through the first external thread joint and the second external thread joint, the first cylindrical outer cylinder is connected to the bypass air duct through the first external thread joint, and the last cylindrical outer cylinder is connected to the third external thread joint through the second external thread joint.
[0010] In the above technical solution, concave flanges are provided at both ends of the bypass air duct, and a threaded joint is provided in the middle of the bypass air duct body, and the threaded joint is connected to the first external threaded joint.
[0011] In the above technical solution, the coil is in a spiral shape.
[0012] In the above technical solution, a plurality of supporting angle steels are arranged at the bottom of the thin-walled cylinder.
[0013] In the above technical solution, a straight pipe joint is provided at the top of the thin-walled cylinder.
[0014] In the above technical solution, thin-walled steel pipes are arranged on both sides of the thin-walled cylinder, the third external threaded joint is connected to the thin-walled steel pipe on the left side, and the butt-welded flange is connected to the thin-walled steel pipe on the right side.
[0015] In the above technical solution, the threaded joint and the first external threaded joint, and the second external threaded joint and the third external threaded joint are connected via a metal braided hose.
[0016] Compared with the prior art, the utility model has the following advantages.
[0017] 1) The utility model has a simple structure, reliable functions, is easy to manufacture, and can be placed flexibly.
[0018] 2) The utility model has a simple principle and accurate measurement value.
[0019] 3) The utility model is modular in design and can meet the humidity measurement requirements of most working conditions. The relevant dimensions or the number of cooling components and measuring components can be adjusted according to the requirements.
[0020] 4) The utility model uses coils to reduce the overall volume. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic diagram of the structure of the bypass air duct.
[0022] Figure 2 It is a schematic diagram of the structure of the cooling component.
[0023] Figure 3 Schematic diagram of the measurement component.
[0024] Among them, 1-bypass air duct, 11-concave flange, 12-threaded joint, 2-cooling component, 21-cylindrical outer cylinder, 22-coil, 23-first external threaded joint, 24-second external threaded joint, 3-measuring component, 31-thin-walled cylinder, 32-third external threaded joint, 33-butt welding flange, 34-sensor joint, 35-support angle steel, 36-straight pipe joint, 37-thin-walled steel pipe. DETAILED DESCRIPTION
[0025] The following is a detailed description of the implementation of the utility model in conjunction with the accompanying drawings, but they do not constitute a limitation of the utility model and are only used as examples. At the same time, the advantages of the utility model will become clearer and easier to understand through the description.
[0026] Referring to the attached drawings, it can be seen that: an air source humidity measurement tool for a simulated test of an aircraft environmental control system is characterized in that: it comprises a bypass air duct 1, a cooling component 2 and a measuring component 3;
[0027] The cooling assembly 2 includes at least one cylindrical outer cylinder 21 and a coil 22 located inside the cylindrical outer cylinder 21; the coil 22 is provided with a first external thread joint 23 extending from the left side of the cylindrical outer cylinder 21 at the left end, and a second external thread joint 24 extending from the right side of the cylindrical outer cylinder 21 at the right end;
[0028] The measuring assembly 3 includes a thin-walled cylinder 31 of a cavity structure, a third external threaded joint 32 arranged on the left side of the thin-walled cylinder 31, a butt-welded flange 33 arranged on the right side of the thin-walled cylinder 31, and a sensor joint 34 arranged on the top of the thin-walled cylinder 31, and a temperature and humidity sensor is installed at the sensor joint 34;
[0029] When the number of the cylindrical outer tube 21 is one, the first external thread joint 23 of the cylindrical outer tube 21 is communicated with the bypass air duct 1, and the second external thread joint 24 of the cylindrical outer tube 21 is communicated with the third external thread joint 32;
[0030] When the number of cylindrical outer cylinders 21 is greater than one, the cylindrical outer cylinders 21 are connected in series via the first external threaded joint 23 and the second external threaded joint 24. The first cylindrical outer cylinder 21 is connected to the bypass air duct 1 via the first external threaded joint 23, and the last cylindrical outer cylinder 21 is connected to the third external threaded joint 32 via the second external threaded joint 24.
[0031] The left and right ends of the bypass air duct 1 are both provided with concave flanges 11 , and the middle position of the bypass air duct 1 is provided with a threaded joint 12 , which is connected to the first external threaded joint 23 .
[0032] The coil 22 is in a spiral shape.
[0033] A plurality of supporting angle steels 35 are disposed at the bottom of the thin-walled cylinder 31 .
[0034] A straight pipe joint 36 is provided at the top of the thin-walled cylinder 31 .
[0035] Thin-walled steel pipes 37 are provided on both sides of the thin-walled cylinder 31 , the third external threaded joint 32 is connected to the thin-walled steel pipe 37 on the left side, and the butt-welding flange 33 is connected to the thin-walled steel pipe 37 on the right side.
[0036] The threaded joint 12 and the first external threaded joint 23 , and the second external threaded joint 24 and the third external threaded joint 32 are connected via metal braided hoses.
[0037] In actual use, the bypass air duct 1 is a seamless steel pipe, and the threaded joint 12 is welded to the corresponding hole position after drilling a hole in the middle of the bypass air duct 1.
[0038] The cylindrical outer tube 21 is formed by welding of stainless steel, and meets the airtightness and pressure resistance requirements after welding; the coil 22 is made of seamless steel pipe, the pipe thickness meets the pressure resistance requirements, and the two ends are welded with external threaded joints processed as required.
[0039] The thin-walled cylinder 31 is formed by welding of stainless steel, and meets the requirements of airtightness and pressure resistance after welding; there are 4 support angles 35 and 2 straight pipe joints 36; the support angles 35 are evenly distributed at the bottom of the thin-walled cylinder 31 to support the thin-walled cylinder 31 so that it is off the ground; the sensor joint 34 and the straight pipe joint 36 are welded to the corresponding holes on the body of the thin-walled cylinder 31; the third external threaded joint 32 is welded to one end of the thin-walled cylinder 31, and the other end of the thin-walled cylinder 31 is welded to the butt-weld flange 33.
[0040] Before the test, use a suitable metal braided hose to connect the pipelines in the order of bypass air duct 1 → cooling component 2 → measuring component 3, and install a temperature and humidity sensor at the sensor joint 34; after the air source air is fully mixed with water vapor, when it flows through the bypass air duct 1, part of the airflow enters the cooling component 2 through the inner hole of the threaded joint 12, and when the airflow flows through the coil 22 of the cooling component 2, it exchanges heat with the air in the cylindrical outer cylinder 21, and the air in the cylindrical outer cylinder 21 exchanges heat with the atmosphere, and the airflow temperature in the coil 22 decreases. The airflow enters the measuring component 3 through the braided hose, and the flow rate decreases when the airflow enters the thin-walled cylinder 31. The temperature and flow rate of the airflow reach the required range of the temperature and humidity sensor, and the temperature and humidity sensor can measure a relatively accurate humidity value.
[0041] Other parts not described belong to the prior art.
Claims
1. An air source humidity measurement tool for aircraft environmental control system simulation test, characterized in that: It comprises a bypass air duct (1), a cooling component (2) and a measuring component (3); The cooling assembly (2) comprises at least one cylindrical outer cylinder (21) and a coil (22) located inside the cylindrical outer cylinder (21); the coil (22) is provided with a first external thread joint (23) extending out of the left side of the cylindrical outer cylinder (21) at the left end, and a second external thread joint (24) extending out of the right side of the cylindrical outer cylinder (21) at the right end; The measuring assembly (3) comprises a thin-walled cylinder (31) of a cavity structure, a third external threaded joint (32) arranged on the left side of the thin-walled cylinder (31), a butt-welded flange (33) arranged on the right side of the thin-walled cylinder (31), and a sensor joint (34) arranged on the top of the thin-walled cylinder (31), wherein a temperature and humidity sensor is installed at the sensor joint (34); When the number of the cylindrical outer tube (21) is one, the first external thread joint (23) of the cylindrical outer tube (21) is in communication with the bypass air duct (1), and the second external thread joint (24) of the cylindrical outer tube (21) is in communication with the third external thread joint (32); When the number of the cylindrical outer cylinders (21) is greater than one, the cylindrical outer cylinders (21) are connected in series via a first external thread joint (23) and a second external thread joint (24); the first cylindrical outer cylinder (21) is connected to the bypass air duct (1) via the first external thread joint (23), and the last cylindrical outer cylinder (21) is connected to the third external thread joint (32) via the second external thread joint (24).
2. The air source humidity measurement tool for aircraft environmental control system simulation test according to claim 1, characterized in that: The left and right ends of the bypass air duct (1) are both provided with concave flanges (11), and the middle position of the bypass air duct (1) is provided with a threaded joint (12), and the threaded joint (12) is connected to the first external threaded joint (23).
3. The air source humidity measurement tool for aircraft environmental control system simulation test according to claim 1, characterized in that: The coil (22) is in a spiral shape.
4. The air source humidity measurement tool for aircraft environmental control system simulation test according to claim 1, characterized in that: A plurality of supporting angle steels (35) are arranged at the bottom of the thin-walled cylinder (31).
5. The air source humidity measurement tool for aircraft environmental control system simulation test according to claim 1, characterized in that: A straight pipe joint (36) is provided at the top of the thin-walled cylinder (31).
6. The air source humidity measurement tool for aircraft environmental control system simulation test according to claim 1, characterized in that: Thin-walled steel pipes (37) are provided on both sides of the thin-walled cylinder (31), the third external threaded joint (32) is connected to the thin-walled steel pipe (37) on the left side, and the butt-welding flange (33) is connected to the thin-walled steel pipe (37) on the right side.
7. The air source humidity measurement tool for aircraft environmental control system simulation test according to claim 2, characterized in that: The threaded joint (12) and the first external threaded joint (23), and the second external threaded joint (24) and the third external threaded joint (32) are connected via metal braided hoses.