CN110816852A - Pressure difference sensing type condenser anti-freezing and anti-blocking device and method - Google Patents
Pressure difference sensing type condenser anti-freezing and anti-blocking device and method Download PDFInfo
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- CN110816852A CN110816852A CN201911182801.3A CN201911182801A CN110816852A CN 110816852 A CN110816852 A CN 110816852A CN 201911182801 A CN201911182801 A CN 201911182801A CN 110816852 A CN110816852 A CN 110816852A
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- pipeline
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- condenser
- heat source
- limit valve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft
- B64D13/06—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft the air being conditioned
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft
- B64D13/06—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft the air being conditioned
- B64D2013/0603—Environmental Control Systems
Abstract
The application belongs to the field of airplane environment control systems, and particularly relates to a pressure difference sensing type condenser anti-freezing and anti-blocking device and method. The device comprises: test pipeline, heat source pipeline and controller. One end of the test pipeline is connected with an inlet pipeline of the condenser, the other end of the test pipeline is connected with an outlet pipeline of the condenser, and a differential pressure annunciator is arranged on the test pipeline; one end of the heat source pipeline is connected with an inlet pipeline of the condenser, the other end of the heat source pipeline is connected with a heat source outlet pipeline of the heat source component, and the heat source pipeline is provided with a low-limit valve; the controller is respectively electrically connected with the differential pressure annunciator and the low limit valve and is used for controlling the low limit valve according to the test signal of the differential pressure annunciator. The air supply state is confirmed through the pressure difference value of condenser exit to this application, and the interfusion of the hot-air of control heat source pipeline realizes implementing the stifled function of preventing frostbite as required, reduces the compensation loss that the engine bleed brought, and environmental control system refrigeration performance when showing the promotion low-altitude flight.
Description
Technical Field
The application belongs to the field of airplane environment control systems, and particularly relates to a pressure difference sensing type condenser anti-freezing and anti-blocking device and method.
Background
In order to meet the comfort of the temperature of the aircraft cabin, the environment control system needs to utilize a refrigeration accessory to cool high-temperature air and ventilate the cabin according to the heat load and the flight environment conditions of the cabin, so that the temperature control of the cabin is realized. The main refrigeration accessory of the system is a turbine cooler, and because the specific enthalpy of water is very high, the water content in air has great influence on the efficiency of the turbine. In order to ensure the refrigeration performance and prevent the generation of water vapor in the cabin, the air circulation system generally adopts a high-pressure water removal mode with regenerative condensation to ventilate and remove water in the cabin. In a high-temperature and high-humidity marine environment, the air humidity is very high, most of moisture in the air of the environment control system can be removed through high-pressure water removal, but along with the reduction of the air temperature, the residual water in the air still enables the air to reach an oversaturated state to cause liquid water to be separated out, when the air temperature is lower than 0 ℃, the freezing occurs to cause the freezing and blocking of a condenser, the performance of the environment control system is influenced, even the environment control system cannot work, and the flight mission is invalid.
In order to avoid freezing and blocking of the condenser in a high-humidity environment, a temperature control method is generally adopted, hot air is added to an inlet of the condenser during medium and low altitude flight, and the inlet temperature is ensured to be above 0 ℃ (usually 5 ℃), which is effective, but has obvious defects: firstly, an environment control system needs to increase the air entraining quantity of an engine, so that the compensation loss is increased; in addition, in a high-temperature and high-humidity environment, the requirement for cabin refrigeration is high, the adoption of the method causes the air supply temperature to be increased, the refrigeration performance is greatly reduced, the cabin environment is worsened, and the operation efficiency of a pilot is seriously influenced.
Accordingly, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.
Disclosure of Invention
The application aims to provide a differential pressure sensing type condenser anti-freezing and anti-blocking device and method to solve at least one problem in the prior art.
The technical scheme of the application is as follows:
a first aspect of the present application provides a pressure-difference-sensing type condenser freeze-blockage preventing device, including:
the device comprises a testing pipeline, a pressure difference annunciator and a control circuit, wherein one end of the testing pipeline is connected with an inlet pipeline of a condenser, the other end of the testing pipeline is connected with an outlet pipeline of the condenser, and the testing pipeline is provided with the pressure difference annunciator;
one end of the heat source pipeline is connected with an inlet pipeline of the condenser, the other end of the heat source pipeline is connected with a heat source outlet pipeline of the heat source component, and a low-limit valve is arranged on the heat source pipeline;
and the controller is respectively electrically connected with the differential pressure annunciator and the low limit valve and is used for controlling the low limit valve according to the test signal of the differential pressure annunciator.
Optionally, a connection between the test pipeline and the inlet pipeline of the condenser is arranged outside a connection between the heat source pipeline and the inlet pipeline of the condenser.
Optionally, the heat source component is a compressor.
Optionally, the low limit shutter is configured with a 27V dc power supply.
Optionally, the low-limit valve is provided with an angular displacement sensor for measuring the opening degree of the low-limit valve, and the controller is further used for acquiring the opening degree of the low-limit valve.
A second aspect of the present application provides a pressure difference sensing type condenser anti-freezing and blocking method, based on the above mentioned pressure difference sensing type condenser anti-freezing and blocking device, including:
setting a test threshold value of the differential pressure annunciator through a controller;
and the controller acquires the test signal of the differential pressure annunciator in real time and controls the opening or closing of the low-limit valve according to the test threshold and the test signal of the differential pressure annunciator.
Optionally, the test threshold comprises a high threshold and a low threshold.
Optionally, the step of acquiring, by the controller, a test signal of the differential pressure annunciator in real time, and controlling the opening or closing of the low-limit valve according to the test threshold and the test signal of the differential pressure annunciator specifically includes:
the controller acquires a test signal of the differential pressure annunciator in real time and compares the test signal with a test threshold set by the controller;
when the test signal of the differential pressure annunciator reaches the high threshold value, the controller sends an opening instruction to the low-limit valve, and the low-limit valve is gradually opened;
when the test signal of the differential pressure annunciator reaches the low threshold value, the controller sends a closing instruction to the low-limit valve, and the low-limit valve is gradually closed.
The invention has at least the following beneficial technical effects:
the utility model provides a pressure differential sensing formula condenser prevents frostbite stifled device confirms the air feed state through the pressure difference value of condenser exit, controls the hot-air's of heat source pipeline the volume of mixing in, realizes implementing as required prevents frostbite stifled function, reduces the compensation loss that the engine bleed brought, is showing when promoting low-altitude flight environmental control system refrigeration performance.
Drawings
FIG. 1 is a schematic view of a differential pressure sensing condenser freeze block prevention device according to an embodiment of the present application;
fig. 2 is a schematic view of the working environment of the anti-freezing device of the pressure-difference sensing condenser according to an embodiment of the present application.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. 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 application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present application and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the present application.
The present application is described in further detail below with reference to fig. 1-2.
A first aspect of the present application provides a pressure-difference-sensing type condenser freeze-blockage preventing device, including: test pipeline, heat source pipeline and controller.
Specifically, one end of the test pipeline is connected with an inlet pipeline of the condenser, the other end of the test pipeline is connected with an outlet pipeline of the condenser, and a differential pressure annunciator is arranged on the test pipeline; one end of the heat source pipeline is connected with an inlet pipeline of the condenser, the other end of the heat source pipeline is connected with a heat source outlet pipeline of the heat source component, and the heat source pipeline is provided with a low-limit valve; the controller is respectively electrically connected with the differential pressure annunciator and the low limit valve and is used for controlling the low limit valve according to the test signal of the differential pressure annunciator.
In one embodiment of the present application, in order to prevent the test pipeline of the differential pressure annunciator from being blocked by icing, the connection between the test pipeline and the inlet pipeline of the condenser is preferably arranged outside the connection between the heat source pipeline and the inlet pipeline of the condenser, so as to ensure that the differential pressure signal is not distorted due to the influence of the working environment.
In one embodiment of the present application, the heat source component is a compressor.
In one embodiment of the application, the low limit valve is provided with a 27V direct current power supply, the low limit valve is further provided with an angular displacement sensor for measuring the opening degree of the low limit valve, and the controller is further used for acquiring the opening degree of the low limit valve.
According to the pressure difference sensing type condenser anti-freezing and blocking device, a pressure difference annunciator is additionally arranged on a typical condenser inlet and outlet pipeline with a heat recovery condensation high-pressure dewatering boosting type air circulation of an environment control system, a temperature sensor arranged at an inlet of a condenser in a conventional method is omitted, hot air at an outlet of a gas compressor is used as a heat source, and the connection between the heat source and the inlet pipeline of the condenser is realized through a low-limit valve.
A second aspect of the present application provides a pressure-difference-sensitive condenser anti-freezing-blocking method, including:
setting a test threshold of the differential pressure annunciator through a controller, wherein the test threshold comprises a high threshold and a low threshold;
the controller acquires the test signal of the differential pressure annunciator in real time, and controls the opening or closing of the low-limit valve according to the test threshold and the test signal of the differential pressure annunciator, specifically: the controller acquires a test signal of the differential pressure annunciator in real time and compares the test signal with a test threshold set by the controller; when the test signal of the differential pressure annunciator reaches a high threshold value, the controller sends an opening instruction to the low-limit valve, and the low-limit valve is gradually opened; when the test signal of the differential pressure annunciator reaches a low threshold value, the controller sends a closing instruction to the low-limit valve, and the low-limit valve is gradually closed.
According to the pressure difference sensing type condenser anti-freezing and blocking method, when the condenser is in a freezing and blocking trend, the flow resistance is increased due to the fact that the circulation capacity of the condenser is reduced, when the threshold value reaches the set value of a pressure difference annunciator, overrun information is reported to a control computer, the control computer sends an action instruction to a low-limit valve, the valve is gradually opened, the action is stopped after the overrun signal of the pressure difference annunciator disappears, when the pressure difference continues to be reduced and reaches the low-level set threshold value, the control computer sends an instruction to drive the low-limit valve to move in the closing direction until the low-limit valve is closed.
According to the differential pressure sensing type condenser anti-freezing and anti-blocking device and method, the anti-freezing and anti-blocking effects are guaranteed, meanwhile, the air entraining of an engine can be greatly reduced, and the reduction of airplane performance reduction and endurance time caused by the increase of environmentally controlled air entraining is avoided; in addition, the refrigeration capacity of the environment control system can be remarkably improved, and the serious technical problem that the flight is influenced due to high temperature of a low-altitude flight cabin in the traditional method is solved. The aircraft refrigeration accessory has the advantages of obvious weight and volume advantages and strong technical advantages on harsh requirements on weight and installation space of the aircraft through a comprehensive design of the existing refrigeration accessory.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (8)
1. The utility model provides a stifled device of pressure differential perception formula condenser prevents frostbite, its characterized in that includes:
the device comprises a testing pipeline, a pressure difference annunciator and a control circuit, wherein one end of the testing pipeline is connected with an inlet pipeline of a condenser, the other end of the testing pipeline is connected with an outlet pipeline of the condenser, and the testing pipeline is provided with the pressure difference annunciator;
one end of the heat source pipeline is connected with an inlet pipeline of the condenser, the other end of the heat source pipeline is connected with a heat source outlet pipeline of the heat source component, and a low-limit valve is arranged on the heat source pipeline;
and the controller is respectively electrically connected with the differential pressure annunciator and the low limit valve and is used for controlling the low limit valve according to the test signal of the differential pressure annunciator.
2. The pressure differential sensing condenser anti-freezing and blocking device as claimed in claim 1, wherein the connection of the test pipeline and the inlet pipeline of the condenser is arranged outside the connection of the heat source pipeline and the inlet pipeline of the condenser.
3. The pressure differential sensing condenser freeze blockage prevention device of claim 1, wherein the heat source member is a compressor.
4. The pressure differential sensing condenser anti-freezing and blocking device as recited in claim 1, wherein the low limit shutter is configured with a 27V dc power supply.
5. The pressure difference sensing type condenser anti-freezing and blocking device as claimed in claim 4, wherein the low-limit valve is provided with an angular displacement sensor for measuring the opening degree of the low-limit valve, and the controller is further used for acquiring the opening degree of the low-limit valve.
6. The pressure difference sensing type condenser anti-freezing blocking method is based on the pressure difference sensing type condenser anti-freezing blocking device as claimed in any one of the claims 1 to 5, and is characterized by comprising the following steps:
setting a test threshold value of the differential pressure annunciator through a controller;
and the controller acquires the test signal of the differential pressure annunciator in real time and controls the opening or closing of the low-limit valve according to the test threshold and the test signal of the differential pressure annunciator.
7. The pressure differential sensing condenser freeze plugging prevention method of claim 6 wherein the test threshold comprises a high threshold and a low threshold.
8. The pressure difference sensing type condenser anti-freezing and blocking method as claimed in claim 7, wherein the controller obtains the test signal of the pressure difference annunciator in real time, and controls the opening or closing of the low limit valve according to the test threshold and the test signal of the pressure difference annunciator specifically comprises:
the controller acquires a test signal of the differential pressure annunciator in real time and compares the test signal with a test threshold set by the controller;
when the test signal of the differential pressure annunciator reaches the high threshold value, the controller sends an opening instruction to the low-limit valve, and the low-limit valve is gradually opened;
when the test signal of the differential pressure annunciator reaches the low threshold value, the controller sends a closing instruction to the low-limit valve, and the low-limit valve is gradually closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911182801.3A CN110816852B (en) | 2019-11-27 | 2019-11-27 | Differential pressure sensing type condenser anti-freezing and anti-blocking device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911182801.3A CN110816852B (en) | 2019-11-27 | 2019-11-27 | Differential pressure sensing type condenser anti-freezing and anti-blocking device and method |
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| CN110816852A true CN110816852A (en) | 2020-02-21 |
| CN110816852B CN110816852B (en) | 2022-11-22 |
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| CN201911182801.3A Active CN110816852B (en) | 2019-11-27 | 2019-11-27 | Differential pressure sensing type condenser anti-freezing and anti-blocking device and method |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4352273A (en) * | 1979-05-22 | 1982-10-05 | The Garrett Corporation | Fluid conditioning apparatus and system |
| CN1060270A (en) * | 1990-08-17 | 1992-04-15 | 联合技术股份有限公司 | The environmental control system condensing circulation |
| US6050103A (en) * | 1996-12-31 | 2000-04-18 | Samsung Aerospace Industries, Ltd. | Air conditioning system |
| GB0016940D0 (en) * | 1999-07-30 | 2000-08-30 | Liebherr Aerospace Gmbh | Air-conditioning system for airplane cabins |
| US6295822B1 (en) * | 1999-08-04 | 2001-10-02 | Daimlerchrysler Aerospace Airbus Gmbh | Aircraft air-conditioning apparatus with water separators |
| US20050115249A1 (en) * | 2002-10-10 | 2005-06-02 | Joachim Haas | Condenser |
| US20140166812A1 (en) * | 2012-12-13 | 2014-06-19 | Hamilton Sundstrand Corporation | Condenser Ice Removal for Environmental Control System |
| CN104214980A (en) * | 2013-05-31 | 2014-12-17 | 哈米尔顿森德斯特兰德公司 | Aircraft refrigeration unit evaporator heater |
| CN107200136A (en) * | 2016-03-16 | 2017-09-26 | 哈米尔顿森德斯特兰德公司 | Half encapsulation architecture for environmental control system |
-
2019
- 2019-11-27 CN CN201911182801.3A patent/CN110816852B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4352273A (en) * | 1979-05-22 | 1982-10-05 | The Garrett Corporation | Fluid conditioning apparatus and system |
| CN1060270A (en) * | 1990-08-17 | 1992-04-15 | 联合技术股份有限公司 | The environmental control system condensing circulation |
| US6050103A (en) * | 1996-12-31 | 2000-04-18 | Samsung Aerospace Industries, Ltd. | Air conditioning system |
| GB0016940D0 (en) * | 1999-07-30 | 2000-08-30 | Liebherr Aerospace Gmbh | Air-conditioning system for airplane cabins |
| US6295822B1 (en) * | 1999-08-04 | 2001-10-02 | Daimlerchrysler Aerospace Airbus Gmbh | Aircraft air-conditioning apparatus with water separators |
| US20050115249A1 (en) * | 2002-10-10 | 2005-06-02 | Joachim Haas | Condenser |
| US20140166812A1 (en) * | 2012-12-13 | 2014-06-19 | Hamilton Sundstrand Corporation | Condenser Ice Removal for Environmental Control System |
| CN104214980A (en) * | 2013-05-31 | 2014-12-17 | 哈米尔顿森德斯特兰德公司 | Aircraft refrigeration unit evaporator heater |
| CN107200136A (en) * | 2016-03-16 | 2017-09-26 | 哈米尔顿森德斯特兰德公司 | Half encapsulation architecture for environmental control system |
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| CN110816852B (en) | 2022-11-22 |
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