Energy-saving pressurizing and heating integrated system suitable for high-altitude area

Abstract

The invention discloses an energy-saving pressurizing and heating integrated system suitable for a high-altitude area, and relates to the technical field of plateau environment safeguard, and the energy-saving pressurizing and heating integrated system comprises a distributed compressor unit which is formed by connecting a plurality of independent low-power air compressors in parallel and is used for jointly providing pressurized air for a closed cabin; the integrated heat exchange pipeline network comprises a main air supply pipe and a wall-embedded heat exchange coil pipe, and the main air supply pipe is connected with an air outlet of the distributed compressor unit and the closed cabin; the wall-embedded heat exchange coil pipe is laid inside or on the surface of an enclosure structure of the closed cabin, an inlet of the wall-embedded heat exchange coil pipe is communicated with the main air supply pipe, and an outlet of the wall-embedded heat exchange coil pipe is led to the inner space of the closed cabin. The coil pipes laid in the wall body and the floor are directly used for increasing the surface temperature of the cabin body, radiant heating is achieved, and heat originally needing to be dissipated through additional energy consumption is effectively utilized.

Description

Technical Field

[0001] This invention relates to the field of plateau environmental protection technology, specifically to an energy-saving pressurized heating integrated system suitable for high-altitude areas. Background Technology

[0002] In high-altitude areas, due to low atmospheric pressure and low oxygen content, it is often necessary to mechanically pressurize and supply compressed air into sealed cabins to increase the indoor air pressure and oxygen partial pressure; this process is called "pressurization." Simultaneously, the region experiences harsh winters, necessitating heating to maintain a suitable temperature within the cabins. Therefore, "pressurized heating" refers to a comprehensive technology that simultaneously creates and maintains a suitable air pressure and temperature environment for such cabins.

[0003] Currently, the conventional approach to pressurized heating is to set up two independent systems: a high-power air compressor system for pressurization and a heating system, such as an electric heater or an oil-fired boiler, for heating. This separate architecture has significant drawbacks: First, the pressurization system is usually configured based on maximum demand with a backup, resulting in the system operating at high power for most of the time when only pressure maintenance is required, leading to huge energy consumption and a "powered engine for a small load" phenomenon. Second, the air compressor generates a large amount of heat during operation, which is usually considered waste heat in conventional pressurization systems and directly discharged to the outside through the aftercooler, failing to be effectively utilized. However, the independent heating system requires additional energy to generate heat, resulting in repeated energy consumption and waste.

[0004] To address the aforementioned issues, an energy-saving pressurized heating integrated system suitable for high-altitude areas was designed. This system aims to resolve the problems of low energy efficiency and severe energy waste in pressurized systems under partial load conditions, the contradiction between the failure to recover and utilize the waste heat generated during compression and the need for additional energy consumption for heating, and the technical issues of high initial equipment investment and non-compact system structure resulting from separating the pressurization and heating systems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an energy-saving pressurized heating integrated system suitable for high-altitude areas, solving the technical problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an energy-saving pressurized heating integrated system suitable for high-altitude areas, comprising: a distributed compressor unit, consisting of multiple independent low-power air compressors connected in parallel, used to jointly provide pressurized air to a sealed chamber; an integrated heat exchange pipeline network, including a main air supply duct and wall-mounted heat exchange coils, wherein the main air supply duct connects the air outlet of the distributed compressor unit to the sealed chamber; the wall-mounted heat exchange coils are laid inside or on the surface of the enclosure structure of the sealed chamber, with their inlet connected to the main air supply duct and their outlet leading to the interior space of the sealed chamber; the sealed chamber is an airtight structure, with at least a portion of its enclosure structure made of metal; and a control system, communicatively connected to each low-power air compressor in the distributed compressor unit, used to monitor environmental parameters within the sealed chamber and dynamically control the number of low-power air compressors starting and stopping based on the environmental parameters.

[0007] In this embodiment, the rated power of a single low-power air compressor is less than 50% of the total power required by the system, preferably less than 20%, and more preferably less than 10%.

[0008] In this embodiment, the wall-mounted heat exchange coil is laid tightly against the inner side of the wall, floor, and / or ceiling of the sealed compartment, so that when compressed air flows through the wall-mounted heat exchange coil, its heat can be directly transferred to the enclosure structure through heat conduction.

[0009] In this embodiment, the enclosure structure of the sealed chamber is mainly composed of metal plates, which serve as the terminal heat dissipation surface of the integrated heat exchange pipeline network.

[0010] In this embodiment, the integrated heat exchange pipeline network further includes an insulation layer disposed on the main air supply duct.

[0011] In this embodiment, the environmental parameters are further configured to include at least one of the internal air pressure and internal temperature of the sealed chamber.

[0012] In this embodiment, the control system is further configured to: increase the number of low-power air compressors started when the internal air pressure is lower than a first preset threshold; and decrease the number of low-power air compressors running when the internal air pressure is higher than a second preset threshold; wherein the first preset threshold is greater than or equal to the second preset threshold.

[0013] In this embodiment, the control system is further configured to adjust the start-stop strategy of the low-power air compressor according to the difference between the internal temperature and the target temperature. Specifically, when the internal air pressure demand is the same, if the internal temperature is lower than the target temperature, more of the low-power air compressors are preferentially started to increase heat output.

[0014] In this embodiment, the integrated heat exchange pipeline network further includes a bypass pipeline. One end of the bypass pipeline is connected to the inlet end of the main air supply pipe, and the other end is connected to the internal space of the sealed chamber. A control valve is provided on the bypass pipeline. The control system is connected to the control valve and is used to open the control valve when the internal temperature of the sealed chamber is too high, so that some or all of the compressed air bypasses the wall-mounted heat exchange coil and directly enters the sealed chamber.

[0015] This embodiment is further configured to include the following steps: monitoring the internal air pressure and internal temperature of the sealed chamber through the control system; calculating the required pressurization power based on the internal air pressure, and accordingly controlling the start of a corresponding number of small-power air compressors in the distributed compressor unit to generate high-temperature compressed air; guiding the high-temperature compressed air to the wall-mounted heat exchange coil of the integrated heat exchange pipeline network, so that its heat is conducted to the enclosure structure of the sealed chamber for radiant heating of the room; and finally releasing the compressed air after heat exchange and cooling into the sealed chamber to complete the pressurization and air replenishment.

[0016] Beneficial effects This invention provides an energy-saving integrated pressurized heating system suitable for high-altitude areas. By combining distributed compressor units with heat exchange pipelines integrated into the building envelope, this invention achieves the following beneficial effects: First, the system can precisely adjust the number of operating compressors according to the actual pressure requirements inside the cabin, changing the traditional "all-on or all-off" operating mode of high-power compressors, thereby significantly reducing energy consumption while maintaining operating conditions. Second, the system directly uses the heat of compression generated during air compression to raise the surface temperature of the cabin through coils laid in the walls and floors, achieving radiant heating. This effectively utilizes the heat that would otherwise require additional energy to dissipate, reducing or even replacing independent heating equipment. Ultimately, this system collaboratively solves the two core needs of pressurization and heating in high-altitude environments within a compact unit, improving the overall energy utilization efficiency and simplifying equipment configuration. Attached Figure Description

[0017] Figure 1 This is a flowchart of the structure of an energy-saving pressurized heating integrated system suitable for high-altitude areas, as described in this invention.

[0018] Figure 2This is a schematic diagram of the structure of an energy-saving pressurized heating integrated system suitable for high-altitude areas, as described in this invention. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-2 This invention provides a technical solution: an energy-saving pressurized heating integrated system suitable for high-altitude areas, comprising: a distributed compressor unit 1, consisting of multiple independent low-power air compressors 101 connected in parallel, used to jointly provide pressurized air to a sealed chamber 4; an integrated heat exchange pipeline network, including a main air supply duct 2 and a wall-mounted heat exchange coil 3, wherein the main air supply duct 2 connects the air outlet of the distributed compressor unit 1 to the sealed chamber 4; the wall-mounted heat exchange coil 3 is laid inside or on the surface of the enclosure structure of the sealed chamber 4, its inlet is connected to the main air supply duct 2, and its outlet leads to the internal space of the sealed chamber 4; the sealed chamber 4 is a structure with good airtightness, and at least part of its enclosure structure is made of metal; and a control system 5, communicatively connected to each low-power air compressor 101 in the distributed compressor unit 1, used to monitor environmental parameters inside the sealed chamber 4, and dynamically control the number of low-power air compressors 101 that start and stop according to the environmental parameters.

[0021] In this embodiment, the rated power of a single small-power air compressor 101 is less than 50% of the total power required by the system, preferably less than 20%, and more preferably less than 10%.

[0022] In this embodiment, the wall-mounted heat exchange coil 3 is laid tightly against the inner side of the wall 401, floor and / or ceiling of the sealed chamber 4, so that when compressed air flows through the wall-mounted heat exchange coil 3, its heat can be directly transferred to the enclosure structure through heat conduction.

[0023] In this embodiment, the enclosure structure of the sealed chamber 4 is mainly composed of metal plates, which serve as the terminal heat dissipation surface of the integrated heat exchange pipeline network.

[0024] In this embodiment, the integrated heat exchange pipeline network further includes an insulation layer disposed on the main air supply duct 2.

[0025] In this embodiment, the environmental parameters are further configured to include at least one of the internal air pressure and internal temperature of the sealed chamber 4.

[0026] In this embodiment, the control system 5 is further configured to: increase the number of low-power air compressors 101 started when the internal air pressure is lower than a first preset threshold; and decrease the number of low-power air compressors 101 running when the internal air pressure is higher than a second preset threshold; wherein the first preset threshold is greater than or equal to the second preset threshold.

[0027] In this embodiment, the control system 5 is further configured to adjust the start-stop strategy of the low-power air compressor 101 according to the difference between the internal temperature and the target temperature. Specifically, when the internal air pressure demand is the same, if the internal temperature is lower than the target temperature, more of the low-power air compressors 101 are preferentially started to increase heat output.

[0028] In this embodiment, the integrated heat exchange pipeline network further includes a bypass pipeline. One end of the bypass pipeline is connected to the inlet end of the main air supply pipe 2, and the other end is connected to the internal space of the sealed chamber 4. A control valve is provided on the bypass pipeline. The control system 5 is connected to the control valve and is used to open the control valve when the internal temperature of the sealed chamber 4 is too high, so that some or all of the compressed air bypasses the wall-mounted heat exchange coil 3 and directly enters the sealed chamber 4.

[0029] This embodiment is further configured to include the following steps: monitoring the internal air pressure and internal temperature of the sealed chamber 4 through the control system 5; calculating the required pressurization power based on the internal air pressure, and accordingly controlling the start of a corresponding number of small-power air compressors 101 in the distributed compressor unit 1 to generate high-temperature compressed air; guiding the high-temperature compressed air to the wall-mounted heat exchange coil 3 of the integrated heat exchange pipeline network, so that its heat is conducted to the enclosure structure of the sealed chamber 4 for radiant heating of the room; and finally releasing the compressed air into the sealed chamber 4 after heat exchange and cooling, thus completing the pressurization and air replenishment.

[0030] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0031] Example: The sealed compartment is a standard modular cabin welded from steel plates, with an internal space of approximately 20 cubic meters. The distributed compressor unit consists of ten 1-kilowatt reciprocating air compressors connected in parallel, with its total outlet connected to the main air supply duct via a collection pipe. The integrated heat exchange pipeline network includes the main air supply duct wrapped with a rubber-plastic insulation layer, and a large number of wall-mounted heat exchange coils made of bent copper tubing. During the construction of the modular cabin, these coils are tightly laid at approximately 15-centimeter intervals and mechanically fixed to the inner surface of the steel inner wall panel to ensure good thermal contact. The control system uses a programmable logic controller (PLC). Its input is connected to pressure and temperature sensors installed inside the cabin, and its output is connected to each of the ten compressors via a relay module, and also connected to a solenoid valve on a bypass pipeline between the main air supply duct and the cabin space.

[0032] During operation, the control system sets the target pressure inside the cabin to atmospheric pressure equivalent to an altitude of 2500 meters, and the target temperature to 18 degrees Celsius. When the cabin door opens, causing a pressure drop, the controller activates the corresponding number of compressors based on the pressure deviation; for example, three compressors can be activated simultaneously to quickly restore pressure. The resulting high-temperature compressed air (approximately 55 degrees Celsius) is first introduced into coils within the walls and floor. Heat is conducted through the copper pipe walls and fixed structure to the steel plates, causing the cabin surface temperature to rise evenly, achieving radiant heating of the room. Subsequently, air cooled to approximately 35 degrees Celsius is released into the cabin, completing pressurization. When only pressure maintenance is required, the controller operates only one compressor, significantly reducing system power consumption. If the indoor temperature approaches its upper limit due to human activity or sunlight exposure, the controller can open a bypass valve, allowing some high-temperature air to enter the cabin directly without passing through the coils, reducing heat input while maintaining pressure. Through this method, the system achieves integrated pressurization and heating functions with on-demand control.

[0033] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. An energy-saving integrated pressurized heating system suitable for high altitude areas, characterized in that, The application relates to a distributed air compression system, comprising: a distributed compressor group (1) composed of multiple independent small-power air compressors (101) connected in parallel, which is used for providing pressurized air to a closed cabin (4) together; an integrated heat exchange pipeline network, which comprises a main air supply pipe (2) and a wall-embedded heat exchange coil (3), the main air supply pipe (2) is connected to the air outlet of the distributed compressor group (1) and the closed cabin (4); the wall-embedded heat exchange coil (3) is laid on the inner side of the enclosure structure of the closed cabin (4), the inlet of the wall-embedded heat exchange coil (3) is communicated with the main air supply pipe (2), and the outlet of the wall-embedded heat exchange coil (3) is communicated with the internal space of the closed cabin (4); the closed cabin (4) is a structure with good air tightness, and at least part of the enclosure structure is made of metal material; and a control system (5) which is in communication connection with each small-power air compressor (101) in the distributed compressor group (1), is used for monitoring the environmental parameters in the closed cabin (4), and dynamically controls the start-stop number of the small-power air compressors (101) according to the environmental parameters. The single rated power of the small-power air compressor (101) is less than 50% of the total system demand power, preferably less than 20%, and more preferably less than 10%.

2. The energy-saving pressurized heating integrated system suitable for high altitude areas according to claim 1, characterized in that The wall-embedded heat exchange coil (3) is closely laid on the inner side of the wall (401), floor and / or ceiling of the closed cabin (4), so that when the compressed air flows through the wall-embedded heat exchange coil (3), the heat of the compressed air can be directly transmitted to the enclosure structure through heat conduction.

3. The energy-saving pressurized heating integrated system suitable for high altitude areas according to claim 1, characterized in that The enclosure structure of the closed cabin (4) is mainly composed of metal plates, and the metal plates serve as the terminal heat dissipation surface of the integrated heat exchange pipeline network.

4. The energy-saving pressurized heating integrated system suitable for high altitude areas according to claim 1, characterized in that The integrated heat exchange pipeline network further comprises an insulation layer arranged on the main air supply pipe (2).

5. The energy-saving integrated pressurized heating system suitable for high altitude areas according to claim 1, characterized in that The environmental parameters include at least one of the internal air pressure and the internal temperature of the closed cabin (4).

6. The energy-saving integrated pressurized heating system suitable for high altitude areas according to claim 1, characterized in that The control system (5) is configured to increase the number of the small-power air compressors (101) started when the internal air pressure is lower than a first preset threshold, and to reduce the number of the small-power air compressors (101) running when the internal air pressure is higher than a second preset threshold, wherein the first preset threshold is greater than or equal to the second preset threshold.

7. The energy-saving pressurized heating integrated system suitable for high altitude areas according to claim 6, characterized in that The control system (5) is further configured to adjust the start-stop strategy of the small-power air compressors (101) according to the difference between the internal temperature and a target temperature, wherein when the internal temperature is lower than the target temperature under the condition that the internal air pressure demand is the same, more small-power air compressors (101) are started to increase the heat output.

8. The energy-saving integrated pressurized heating system suitable for high altitude areas according to claim 7, characterized in that ​ 9. The integrated energy-saving pressurized heating system suitable for high altitude areas according to claim 7, characterized in that The integrated heat exchange pipeline network further comprises a bypass pipeline, one end of the bypass pipeline is connected to the inlet end of the main air supply pipeline (2), the other end is connected to the internal space of the closed cabin (4), and a control valve is arranged on the bypass pipeline; the control system (5) is connected with the control valve, and is used for opening the control valve to make part or all of the compressed air bypass the wall-embedded heat exchange coil (3) and directly enter the closed cabin (4) when the internal temperature of the closed cabin (4) is too high.

10. The method of claim 1, wherein the integrated pressurized heating system is suitable for high altitude areas. The method comprises the following steps: The internal air pressure and the internal temperature of the closed cabin (4) are monitored through the control system (5); according to the internal air pressure, the required pressurization power is calculated, and the corresponding number of small-power air compressors (101) in the distributed compressor set (1) is controlled to start to generate high-temperature compressed air according to the pressurization power; the high-temperature compressed air is guided into the wall-embedded heat exchange coil (3) of the integrated heat exchange pipeline network, so that the heat is conducted to the enclosure structure of the closed cabin (4) to radiate and heat the room; and the compressed air after heat exchange and cooling is finally released into the closed cabin (4) to complete the pressurization and air supplement.

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