Heat exchange system for air compressor

Abstract

The invention provides a heat exchange system for an air compressor, and relates to the technical field of heat exchange. Comprising an air compressor and a heat exchanger used for being connected with the air compressor, exchanging heat and recovering heat energy, the heat exchanger is provided with a heat exchange pipeline distributed in a U-shaped structure and used for improving heat exchange efficiency and reducing airflow resistance, a first group of windward side fins of the heat exchanger are red copper fins, the thickness of the red copper fins is not smaller than 0.1 mm, the other fins are aluminum fins, and the thickness of the aluminum fins is not smaller than 0.1 mm. According to the heat exchanger, the arrangement of the heat exchanger is optimized, the heat exchange pipeline distributed in a U-shaped structure is adopted, the heat exchange efficiency is improved, airflow resistance is reduced, heat energy recovery is more efficient, meanwhile, the first group of windward side fins are red copper fins, the other fins are aluminum fins, and the heat exchange efficiency is improved. The corrosion resistance and the heat-conducting property are improved, and the cost benefit is optimized.

Description

Technical Field

[0001] The present application relates to the field of heat exchange technology, and in particular to a heat exchange system for an air compressor. Background Art

[0002] Centrifugal air compressors are currently widely used in mining, petrochemical, refrigeration and other industries. Centrifugal air compressors mainly use air cooling to reduce the temperature of major components. Centrifugal air compressors consume a lot of electricity, but according to statistics, more than 70% of the electricity is converted into heat energy and dissipated by the air compressor. Therefore, if a heat recovery heat exchange system (also called a heat exchanger) can be developed for centrifugal air compressors to recover the heat energy dissipated by the air compressor, a lot of energy will be saved.

[0003] Current 25600Nm 3 / h air compressor, the first-stage cooler core resistance reaches 23Kpa, the second-stage cooler core resistance reaches 27Kpa, the pressure difference resistance of the gas before and after the heat exchanger is high, the third-stage inlet temperature is high, deviating from the compressor operating conditions, causing major hidden dangers to the operation of the air compressor, and threatening the operation of the entire air separation equipment, with the risk of shutdown.

[0004] In view of this, the present application aims to provide a heat exchange system for an air compressor to better solve the above technical problems. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a heat exchange system for an air compressor, which can solve the technical problems of heat exchange recovery of heat energy dissipated by the air compressor, reduce the energy consumption of the air compressor, and increase the service life of the compressor.

[0006] An embodiment of the present application provides a heat exchange system for an air compressor, including an air compressor and a heat exchanger connected to the air compressor for heat exchange and heat recovery. The heat exchanger is provided with a heat exchange pipeline distributed in a U-shaped structure to improve heat exchange efficiency and reduce airflow resistance. The first group of windward fins of the heat exchanger adopts copper fins with a thickness of not less than 0.1 mm, and the remaining fins are set to aluminum fins with a thickness of not less than 0.15 mm to improve corrosion resistance and thermal conductivity.

[0007] Furthermore, the heat exchange area of ​​the heat exchanger has a margin of not less than 10% to ensure stable operation and efficient heat exchange under different working conditions.

[0008] Furthermore, a mist collector mesh is provided at the core group outlet of the heat exchanger to remove moisture and tiny particles in the airflow and improve the water removal effect.

[0009] Furthermore, the cooling tube of the heat exchanger is made of TP2-V2 copper tube to enhance its corrosion resistance and heat conduction efficiency.

[0010] Furthermore, the heat exchanger is provided with a silicone rubber Y-shaped sealing strip to ensure tight sealing between the components of the heat exchanger to prevent leakage.

[0011] Furthermore, the sealing surface channel steel of the heat exchanger is made of 304 stainless steel material to improve the corrosion resistance and strength of the overall structure.

[0012] Furthermore, it also includes an intelligent monitoring system for real-time monitoring of the operating parameters of the heat exchanger, and automatically alarming or adjusting the working state under abnormal circumstances to ensure the safe operation of the equipment.

[0013] Furthermore, the operating parameters of the heat exchanger include temperature, pressure and flow rate.

[0014] Furthermore, the core group of the heat exchanger is configured as a detachable structure, and the fins of the heat exchanger are configured in a gap-type manner.

[0015] Beneficial effects of the present invention:

[0016] The heat exchange system for an air compressor provided by the present invention comprises an air compressor and a heat exchanger for connecting to the air compressor to perform heat exchange and recover heat energy. The heat exchanger is provided with a heat exchange pipeline with a U-shaped structure distribution, which is used to improve the heat exchange efficiency and reduce the airflow resistance. The first group of windward fins of the heat exchanger adopts copper fins with a thickness of not less than 0.1 mm, and the remaining fins are set as aluminum fins with a thickness of not less than 0.15 mm to improve the corrosion resistance and thermal conductivity. The present invention optimizes the setting of the heat exchanger and adopts a heat exchange pipeline with a U-shaped structure distribution, thereby improving the heat exchange efficiency and reducing the airflow resistance, making the heat energy recovery more efficient. At the same time, the first group of windward fins adopts copper fins, and the remaining fins are set as aluminum fins, which not only improves the corrosion resistance and thermal conductivity, but also optimizes the cost-effectiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 is a schematic structural diagram of a heat exchanger in some embodiments of the present invention;

[0019] Figure 2 for Figure 1 A schematic diagram of the internal section at one position;

[0020] Figure 3 for Figure 1 Schematic diagram of the interior section at another location.

[0021] The reference numerals are:

[0022] Heat exchanger 1, heat exchange pipeline 2, fin 3. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] See also Figure 1-Figure 3 As shown, this embodiment provides a heat exchange system for an air compressor, including an air compressor and a heat exchanger 1 for connecting to the air compressor to perform heat exchange and recover heat energy. The heat exchanger 1 is provided with a heat exchange pipeline 2 distributed in a U-shaped structure to improve heat exchange efficiency and reduce airflow resistance. The first group of windward fins 3 of the heat exchanger 1 adopts copper fins 3 with a thickness of not less than 0.1 mm, and the remaining fins 3 are set to aluminum fins 3 with a thickness of not less than 0.15 mm to improve corrosion resistance and thermal conductivity.

[0030] This embodiment optimizes the setting of the heat exchanger 1 and adopts a U-shaped structure distribution of the heat exchange pipeline 2, thereby improving the heat exchange efficiency and reducing the airflow resistance, making heat energy recovery more efficient. At the same time, the first group of windward fins 3 are made of copper fins 3, and the remaining fins 3 are set to aluminum fins 3, which not only improves the corrosion resistance and thermal conductivity, but also optimizes the cost-effectiveness.

[0031] The heat exchange area of ​​the heat exchanger 1 has a margin of not less than 10% to ensure stable operation and efficient heat exchange under different working conditions.

[0032] Wherein, a mist collector mesh is provided at the core group outlet of the heat exchanger 1 to remove moisture and tiny particles in the airflow and improve the dehydration effect.

[0033] The cooling tube of the heat exchanger 1 is made of TP2-V2 copper tube to enhance its corrosion resistance and heat conduction efficiency, thereby improving the heat exchange performance.

[0034] The heat exchanger 1 is provided with a silicone rubber Y-shaped sealing strip, which is used to ensure a tight seal between the components of the heat exchanger 1 to prevent leakage, thereby improving the safety and stability of the system.

[0035] The sealing surface channel steel of the heat exchanger 1 is made of 304 stainless steel material to improve the corrosion resistance and strength of the overall structure, so that the heat exchanger 1 can maintain stable performance even in harsh environments.

[0036] It also includes an intelligent monitoring system for real-time monitoring of the operating parameters of the heat exchanger 1, and automatically alarming or adjusting the working state under abnormal conditions to ensure the safe operation of the equipment, improve the safety and intelligence level of the system, and reduce operation and maintenance costs.

[0037] The operating parameters of the heat exchanger 1 include temperature, pressure and flow. By monitoring key operating parameters such as temperature, pressure and flow, the working status of the heat exchanger 1 can be fully reflected, providing strong support for fault warning and performance optimization.

[0038] Among them, the core group of the heat exchanger 1 is set as a detachable structure, and the fins 3 of the heat exchanger 1 are arranged in a gap-type manner. By setting the core group as a detachable structure, it is easy to maintain and replace, thereby reducing the maintenance cost; the gap-type arrangement of the fins 3 is conducive to optimizing the airflow distribution and improving the heat exchange efficiency.

[0039] The heat exchange system provided in this embodiment is applied to an air compressor. The model of the air compressor is GT109, the calculated shaft power / KW is 12155.3, the motor power / KW is 13253, and the flow rate is Nm 3 / h is 147820, atmospheric pressure / kPa (A) is 93.9, relative humidity is 78.0%, and the operating efficiency of the air compressor is shown in the following table:

[0040]

[0041]

[0042] In addition, the heat exchange process of the heat exchanger applied to the above heat exchange system was tested, and the test structure is shown in the following table.

[0043]

[0044] Referring to the above test results, it can be seen that by applying the heat exchange system optimized by the present application, the core resistance of the first and second stage heat exchangers of the GT109 air compressor is ≤10Kpa, which can save about 718.3kW of energy consumption, and the approach temperature of the first and second stage heat exchangers is ≤5°C, which can save about 2.7kW of energy consumption, effectively reducing resistance, saving energy consumption, and increasing the service life of the heat exchanger. At the same time, it reduces the equipment failure rate and improves production stability. It has significant energy saving and consumption reduction, and increases the economic benefits of the enterprise.

[0045] In summary, the present invention optimizes the setting of the heat exchanger and adopts a U-shaped structure to distribute the heat exchange pipeline, thereby improving the heat exchange efficiency and reducing the airflow resistance, making heat energy recovery more efficient. At the same time, the first group of windward fins use copper fins, and the remaining fins are set as aluminum fins, which not only improves the corrosion resistance and thermal conductivity, but also optimizes the cost-effectiveness.

[0046] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A heat exchange system for an air compressor, characterized in that: It includes an air compressor and a heat exchanger connected to the air compressor for heat exchange and heat recovery. The heat exchanger is provided with a heat exchange pipeline with a U-shaped structure to improve heat exchange efficiency and reduce airflow resistance. The first group of windward fins of the heat exchanger adopts copper fins with a thickness of not less than 0.1mm, and the remaining fins are set as aluminum fins with a thickness of not less than 0.15mm to improve corrosion resistance and thermal conductivity.

2. The heat exchange system for an air compressor according to claim 1, characterized in that: The heat exchange area of ​​the heat exchanger has a margin of not less than 10% to ensure stable operation and efficient heat exchange under different working conditions.

3. The heat exchange system for an air compressor according to claim 1, characterized in that: The core group outlet of the heat exchanger is provided with a mist collector mesh for removing moisture and tiny particles in the airflow to improve the water removal effect.

4. The heat exchange system for an air compressor according to claim 1, characterized in that: The cooling tube of the heat exchanger is made of TP2-V2 copper tube to enhance its corrosion resistance and heat conduction efficiency.

5. The heat exchange system for an air compressor according to claim 1, characterized in that: The heat exchanger is provided with a silicone rubber Y-shaped sealing strip to ensure tight sealing between the components of the heat exchanger to prevent leakage.

6. The heat exchange system for an air compressor according to claim 1, characterized in that: The sealing surface channel steel of the heat exchanger is made of 304 stainless steel material to improve the corrosion resistance and strength of the overall structure.

7. The heat exchange system for an air compressor according to claim 1, characterized in that: It also includes an intelligent monitoring system for real-time monitoring of the operating parameters of the heat exchanger, and automatically alarming or adjusting the working state under abnormal conditions to ensure safe operation of the equipment.

8. The heat exchange system for an air compressor according to claim 7, characterized in that: The operating parameters of the heat exchanger include temperature, pressure and flow rate.

9. The heat exchange system for an air compressor according to claim 1, characterized in that: The core group of the heat exchanger is set as a detachable structure, and the fins of the heat exchanger are arranged in a gap-type manner.

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