Modular absorption large temperature difference unit

Abstract

The utility model relates to the technical field of heat exchanger unit transportation especially is modular absorption type big temperature difference unit, it includes module one, module two, module three and shell, module one is fixedly connected in the top of module two, module three is fixedly connected in one side of module one, module two, the module one includes generator and condenser, module two includes evaporimeter and absorber, the outer surface of generator, condenser, evaporimeter and absorber all are fixedly connected in the inner wall of shell, the utility model has according to the miniaturized modularization of function and structure, can be combined arbitrarily according to the power size, and is suitable for multi-module combination superposition, is convenient for transportation and adapts to the installation operation of multiple sites, a small part of connecting pipe is fixed through field welding, completes the installation operation of entire modular absorption type big temperature difference unit, can be used for the effect of heat exchange station of site or narrow transportation condition, installation position dispersion.

Description

Technical Field

[0001] This utility model relates to the technical field of heat exchanger unit transportation, and in particular to modular absorption large temperature difference units. Background Technology

[0002] Currently, with the development of my country's economy and industry, the demand for housing comfort is increasing, and the total heating area is constantly increasing. This has led to the widespread implementation of centralized heating in various regions of my country, resulting in the need for long-distance pipeline transportation in many places. In order to achieve the effect of energy conservation and emission reduction, it is necessary to fully absorb the delivered heat, reduce the pipeline transportation pressure, and lower the return water temperature of the heat source to between 15 and 30°C to effectively prevent heat loss during the return water transportation process. This has led to the development of lithium bromide absorption heat exchanger units.

[0003] Most heat exchange pumps are now placed on the first or second basement level. Lithium bromide absorption units are relatively large in size, which places high demands on the location of the heat exchange pump room and makes them inconvenient to transport or pass through narrow spaces. Utility Model Content

[0004] To facilitate transportation and passage through narrow spaces, this utility model provides a modular absorption-type large temperature difference unit.

[0005] The modular absorption large temperature difference unit provided by this utility model adopts the following technical solution: The modular absorption large temperature difference unit includes module one, module two, module three and an outer shell. Module one is fixedly connected above module two, and module three is fixedly connected to one side of modules one and two.

[0006] By adopting the above technical solution, based on the miniaturization and modularization of functions and structure, Module 1, Module 2 and Module 3 can be arbitrarily combined according to the power size, and are suitable for multi-module combination or stacking, which facilitates transportation and adapts to installation and operation in multiple sites. A small part of the connecting pipes are fixed by on-site welding to complete the installation and operation of the entire modular absorption large temperature difference unit. It can be used in heat exchange stations with limited space or transportation conditions and scattered installation locations, and can also be used in heat exchange stations with small space or transportation conditions and high installation height.

[0007] Preferably, module one includes a generator and a condenser, and module two includes an evaporator and an absorber. The outer surfaces of the generator, condenser, evaporator and absorber are all fixedly connected to the inner wall of the outer shell.

[0008] By adopting the above technical solution, when Module 1 and Module 2 are assembled and put into operation by stacking their heights, the modular absorption large temperature difference unit is protected by the outer shell, preventing Module 1 and Module 2 from directly contacting the roof of the heat pump room. At the same time, the outer shell strengthens the connection between Module 1 and Module 2.

[0009] Preferably, module three includes a heat exchanger, which is fixedly connected to a primary water inlet pipe, a primary water outlet pipe, a secondary water inlet pipe, and a secondary water outlet pipe.

[0010] By adopting the above technical solution, primary water and secondary water can exchange heat through the combination of module one and module two. Module three is a separate heat exchange module, which means that heat can also be exchanged again through module three. When module one and module two are damaged and shut down, the modular absorption large temperature difference unit can still exchange heat using only module three, ensuring heating safety.

[0011] Preferably, a portion of the primary water inlet pipe is located inside the generator, a portion of the primary water outlet pipe is located inside the evaporator, a portion of the secondary water inlet pipe is located inside the condenser, and a portion of the secondary water outlet pipe is located inside the absorber.

[0012] By adopting the above technical solution and using a multi-stage evaporation and multi-stage absorption process, cascade heat exchange can be achieved, thereby increasing the inlet and outlet temperature difference of the primary water in the modular absorption large temperature difference unit, thus reducing the outlet temperature of the modular absorption large temperature difference unit and improving the unit efficiency.

[0013] Preferably, the generator, condenser, evaporator and absorber are fixedly connected by connecting pipes.

[0014] By adopting the above technical solution, the generator, condenser, evaporator and absorber are modularized, changing from a large whole to small modules, which is suitable for installation and operation in multiple sites. When connecting the modules, some connecting pipes need to be welded on site.

[0015] In summary, this utility model has the following beneficial technical effects: 1. This device is equipped with Module 1, Module 2 and Module 3. Based on the miniaturization and modularization of function and structure, it can be combined arbitrarily according to the power size and is suitable for multi-module combination and stacking. It is easy to transport and adaptable to installation and operation in multiple sites. A small part of the connecting pipes are fixed by on-site welding to complete the installation and operation of the entire modular absorption large temperature difference unit. It can be used in heat exchange stations with limited space or transportation conditions and scattered installation locations. 2. Modules 1, 2, and 3 of this device can be stacked and transported separately for easy installation. The combined volume will increase, making it suitable for heat exchange stations with limited space or transportation conditions and high installation heights. It is convenient for transportation and passage through narrow spaces. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the modular absorption large temperature difference unit of this utility model; Figure 2 This is a structural schematic diagram of module one in the modular absorption large temperature difference unit of this utility model; Figure 3 This is a schematic diagram of module two in the modular absorption large temperature difference unit of this utility model; Figure 4 This is a schematic diagram of module three in the modular absorption large temperature difference unit of this utility model.

[0017] Explanation of reference numerals in the attached diagram: 1. Generator; 2. Condenser; 3. Evaporator; 4. Absorber. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1-4 The present invention will be described in further detail below.

[0019] This utility model discloses a modular absorption large temperature difference unit.

[0020] Reference Figure 1 It includes Module 1, Module 2, Module 3 and the outer shell. Module 1, Module 2 and Module 3 are multiple devices with different power ratings and can be combined arbitrarily according to the power rating. Module 1 is fixedly connected to the top of Module 2, and Module 3 is fixedly connected to one side of Module 1 and Module 2. Module 1 can be placed flat on top of Module 2, that is, generator 1 and condenser 2 are placed at the same level, evaporator 3 and absorber 4 are placed at the same level, and generator 1 and condenser 2 are located above evaporator 3 and absorber 4. Alternatively, Module 2 can be placed vertically, and Module 1 can be placed flat and then stacked on top of Module 2, that is, from top to bottom, generator 1 and condenser 2 are placed at the same level, evaporator 3 is placed in the middle, and absorber 4 is placed at the bottom. With a transport channel size of only 1.5×1.5×2.9 (meters), the 8MW modular absorption large temperature difference unit can be divided into different modules for transport. The largest single unit has a transport size of only 1.5×1.45×2.85 (meters), which allows it to pass through a transport channel of 1.5×1.5×2.9 (meters).

[0021] Length × Height × Width (mm) Length × Height × Width (mm) Length × Height × Width (mm) Length × Height × Width (mm) 3700×2000×2650 3700×2200×3200 4800×2500×3200 4800×2500×3200 5MW 6MW 7MW 8MW Length × Height × Width (mm) Length × Height × Width (mm) Length × Height × Width (mm) Length × Height × Width (mm) 4800×2500×3300 4800×2500×3300 4900×2700×3320 4900×2900×3320 10MW 12MW 14MW 16MW Length × Height × Width (mm) Length × Height × Width (mm) Length × Height × Width (mm) Length × Height × Width (mm) 4900×3000×3320 5910×3000×3320 5910×3400×3320 5910×3600×3320 Reference Figure 2 , Figure 3 Module 1 includes a generator 1 and a condenser 2, and Module 2 includes an evaporator 3 and an absorber 4. The outer surfaces of the generator 1, condenser 2, evaporator 3 and absorber 4 are all fixedly connected to the inner wall of the outer shell.

[0022] Reference Figure 4 Module 3 includes a heat exchanger, which is fixedly connected to a primary water inlet pipe, a primary water outlet pipe, a secondary water inlet pipe, and a secondary water outlet pipe.

[0023] Reference Figure 1A portion of the primary water inlet pipe is located inside the generator 1, a portion of the primary water outlet pipe is located inside the evaporator 3, a portion of the secondary water inlet pipe is located inside the condenser 2, and a portion of the secondary water outlet pipe is located inside the absorber 4. Reference Figure 2 , Figure 3 The dilute lithium bromide solution is heated and concentrated in generator 1 by an external heat source to produce water vapor and concentrated lithium bromide solution. At the same time, the temperature of the heat source decreases and the temperature of the external circulating water (primary water) increases. The water vapor enters condenser 2 and the concentrated lithium bromide solution enters absorber 4. After the water vapor generated by generator 1 enters condenser 2, due to the low temperature of the external circulating water (secondary water), the water vapor condenses into refrigerant water, releasing heat to the external circulating water (secondary water). The temperature of the external circulating water (secondary water) rises, and the refrigerant water enters evaporator 3. After the refrigerant water enters the evaporator 3, its boiling point drops below the temperature of the external circulating water (primary water) due to the pressure reduction. At this time, the refrigerant water evaporates and absorbs heat, and the generated water vapor enters the absorber 4. At the same time, the external circulating water (primary water) releases heat and its temperature drops, producing a cooling effect. In absorber 4, the concentrated solution absorbs water vapor and is diluted into a dilute solution. This process is exothermic. The external circulating water (secondary water) is heated, and the resulting dilute solution re-enters generator 1 for the next cycle.

[0024] Reference Figure 1 The generator 1, condenser 2, evaporator 3 and absorber 4 are fixedly connected by connecting pipes. After the generator 1, condenser 2, evaporator 3 and absorber 4 are transported to the installation site, a small part of the connecting pipes between the generator 1, condenser 2, evaporator 3 and absorber 4 need to be welded on site.

[0025] The implementation principle of the modular absorption large temperature difference unit in this embodiment of the utility model is as follows: 1. Based on the miniaturization and modularization of function and structure, it can be combined arbitrarily according to power size and is suitable for multi-module stacking. It is easy to transport and adaptable to installation and operation in multiple sites. A small part of the connecting pipes are fixed by on-site welding to complete the installation and operation of the entire modular absorption large temperature difference unit. It can be used in heat exchange stations with limited space or transportation conditions and scattered installation locations. 2. Modules 1, 2 and 3 can be stacked together, and can also be used in heat exchange stations with limited space or transportation conditions and high installation height.

[0026] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

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