A combined dry cooler

Abstract

The utility model relates to a combined dry cooler, including heat exchange fin, air inlet pipeline, exhaust pipeline, the right side top of exhaust pipeline is provided with overflow valve, heat exchange fin includes fixed frame and a plurality of rectangle piece, the inside of the most right side rectangle piece is provided with a plurality of baffle, baffle is used to divide the most right side rectangle piece inside into a plurality of chambers, overflow valve is connected with the chamber of right side, the bottom of the most right side chamber is provided with blowdown, through adopting above technical scheme, when low temperature low pressure steam flows in a plurality of rectangle piece, when flowing to the inside of the most right side rectangle piece, the heat that is not taken away completely by heat exchange fin is absorbed through the water of the inside of the most right side rectangle piece, when pressure accumulates to certain value, water flow discharges from blowdown, airflow flows out from overflow valve at this time, the inside of heat exchange fin is relieved, makes heat exchange fin can stagnate low temperature low pressure steam for a long time, and makes low temperature low pressure steam recool into condensate water and is used by thermal power generator.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange device technology, and in particular to a combined dry cooler. Background Technology

[0002] Dry coolers, also known as dry chillers, play an important role in industry and various fields. From a core functional perspective, they are mainly used to cool various process fluids or gases. In industrial production, many pieces of equipment generate a lot of heat during operation, such as compressors and generators. Dry coolers remove the heat generated by these devices through an efficient heat exchange process, keeping the equipment within a suitable operating temperature range. This prevents malfunctions or performance degradation due to overheating, ensures stable operation of the equipment, and extends its service life. Dry coolers also play a key role in refrigeration systems.

[0003] Currently, in industrial sectors such as thermal power generation, the recovery and utilization of waste heat from low-temperature and low-pressure steam discharged from steam turbines is crucial. Although traditional dry coolers can achieve steam condensation to a certain extent, they still have many shortcomings in practical applications. When handling low-temperature and low-pressure steam, the heat exchange efficiency of dry coolers is insufficient to meet the ever-increasing energy utilization demands. During the flow of steam within the heat exchange fins, some heat cannot be fully carried away, resulting in poor steam condensation and affecting the quality and quantity of condensate recovery. Moreover, as steam continues to enter, the internal pressure of the dry cooler gradually accumulates. The lack of effective pressure regulation and heat absorption mechanisms can easily lead to equipment failure or safety hazards. Under natural convection conditions, a layer of stagnant hot air easily forms on the fin surface of the dry cooler, hindering heat dissipation and further reducing heat exchange efficiency. At the same time, the lack of real-time monitoring of the water flow and steam status within the heat exchange fins makes it impossible to adjust operating parameters in a timely manner and ensure that the equipment is always in optimal working condition. Utility Model Content

[0004] The purpose of this invention is to provide a combined dry cooler to solve the problems existing in the prior art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A combined dry cooler includes heat exchange fins. An air inlet pipe is located on the left side of the top of each heat exchange fin, and an exhaust pipe is located on the top right side of each heat exchange fin. An overflow valve is located on the top right side of each heat exchange fin. Each heat exchange fin includes a mounting frame and multiple rectangular plates. Each rectangular plate is hollow inside. The multiple rectangular plates are fixedly mounted on the mounting frame at equal intervals from left to right. Adjacent rectangular plates are connected by pipes, which are staggered vertically. The rightmost rectangular plate has multiple baffles at equal intervals from left to right inside, dividing its interior into multiple chambers from left to right. Adjacent baffles have staggered through-grooves that connect the multiple chambers. A water inlet pipe is connected to the bottom of the middle chamber. The overflow valve is connected to the right chamber. A drain outlet is located at the bottom of the rightmost chamber.

[0007] By adopting the above technical solution, when low-temperature, low-pressure steam enters the heat exchange fins, it flows within multiple rectangular fins. When it reaches the rightmost rectangular fin, it accumulates pressure. The water inside the rightmost rectangular fin absorbs the heat that was not completely carried away by the heat exchange fins. When the pressure accumulates to a certain value, the airflow pushes the water flow to the rightmost chamber and then discharges it from the drain port. At this time, the airflow flows out from the overflow valve to depressurize the interior of the heat exchange fins. Therefore, a gravity valve needs to be installed in the drain port. The drain can only be opened after a certain amount of water has accumulated. The water inlet pipe needs to refill the middle chamber with cooling water after each depressurization. Through this setting, the heat exchange fins can stagnate the low-temperature, low-pressure steam for a long time and allow the low-temperature, low-pressure steam to be recooled into condensate for use by the thermal power generator.

[0008] In a further embodiment, a temperature sensor and a water level monitoring sensor are provided in the middle cavity inside the rightmost rectangular piece.

[0009] By adopting the above technical solution, the temperature sensor monitors the temperature of the cooling water inside the rightmost rectangular plate in real time, ensuring that the temperature of the cooling water is always in the most effective heat absorption state, thereby improving the heat exchange efficiency of the entire dry cooler. The water level monitoring sensor monitors the liquid level of the cooling water in the middle chamber in real time, ensuring that the chamber always maintains the preset optimal water volume. Moreover, after each pressure relief and drainage, the water level sensor can accurately control the water inlet pipe to refill with water, ensuring that the water level returns to the set value before the next cycle begins, thus achieving automated and reliable circulation operation.

[0010] In a further embodiment, a cooling fan is fixedly mounted on the top of the heat exchange fins.

[0011] By adopting the above technical solution, when low-temperature and low-pressure steam is naturally convectioned, a layer of stagnant hot air is easily formed on the surface of the fins, which hinders the dissipation of heat. The cooling fan can force airflow and directly blow the cooling air layer, accelerating the transfer of heat from the fins to the air.

[0012] In a further embodiment, the periphery of the rectangular piece is configured with a sharp edge structure.

[0013] In a further embodiment, the rectangular piece is provided with a plurality of vertically oriented guide grooves.

[0014] By adopting the above technical solution, the guide channel can guide the airflow to penetrate the heat exchange fins longitudinally, thereby breaking up the trapped hot air layer.

[0015] In a further embodiment, a temperature detection unit is provided inside the air inlet of the heat exchange fins.

[0016] By adopting the above technical solution, the temperature detection unit can detect the temperature value of the steam entering from the heat exchange fin air inlet.

[0017] In summary, this utility model has the following beneficial effects:

[0018] 1. When low-temperature, low-pressure steam enters the heat exchange fins, it flows through multiple rectangular fins. When it reaches the rightmost rectangular fin, it accumulates pressure. The water inside the rightmost rectangular fin absorbs the heat that was not completely carried away by the heat exchange fins. When the pressure reaches a certain value, the airflow pushes the water flow to the rightmost chamber and then discharges it from the drain port. At this time, the airflow flows out from the overflow valve to depressurize the inside of the heat exchange fins. Therefore, a gravity valve needs to be installed in the drain port. The drain can only be opened after a certain amount of water has accumulated. The water inlet pipe needs to be refilled with cooling water in the middle chamber after each depressurization. Through this setting, the heat exchange fins can be kept stagnant for a long time, and the low-temperature, low-pressure steam can be recooled into condensate for use by the thermal power generator.

[0019] 2. The temperature sensor monitors the water temperature inside the rightmost rectangular plate in real time, and the water level sensor monitors the cooling water level in the middle chamber in real time. This ensures that the cooling water temperature is always in the most effective heat absorption state, improving the heat exchange efficiency of the entire dry cooler. It also ensures that the chamber always maintains the preset optimal water volume. After each pressure relief and drainage, the water level sensor can accurately control the water inlet pipe to refill with water, ensuring that the water level returns to the set value before the next cycle begins. This achieves automated and reliable circulation operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the baffle of this utility model.

[0022] In the diagram, 1 is the heat exchange fin; 2 is the air intake pipe; 3 is the exhaust pipe; 4 is the pipe; 5 is the baffle; and 6 is the overflow valve. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings.

[0024] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1 In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0025] Example 1:

[0026] like Figures 1-2 As shown, a combined dry cooler includes heat exchange fins 1. An air inlet pipe 2 is located on the left side of the top of the heat exchange fins 1, and an exhaust pipe 3 is located on the top right side of the heat exchange fins 1. An overflow valve 6 is located on the top right side of the exhaust pipe 3. The heat exchange fins 1 include a mounting frame and multiple rectangular plates. Each rectangular plate is hollow inside, and except for the rightmost rectangular plate, each rectangular plate has a drain outlet at its bottom. The multiple rectangular plates are fixedly installed on the mounting frame at equal intervals from left to right. Adjacent rectangular plates are connected by pipes 4, which are staggered vertically. The rightmost rectangular plate has equal intervals from left to right inside its interior. There are multiple baffles 5, which divide the rightmost rectangular plate into multiple chambers from left to right. The baffles 5 are arranged in a staggered manner with through slots to connect the multiple chambers. The bottom of the chamber is connected to a water inlet pipe. The overflow valve 6 is connected to the right chamber. The bottom of the rightmost chamber is provided with a drain port. The middle chamber inside the rightmost rectangular plate is provided with a temperature sensor and a water level monitoring sensor. A cooling fan is fixedly installed on the top of the heat exchange fin 1. The periphery of the rectangular plate is set with a sharp edge structure. Multiple vertical guide slots are provided on the rectangular plate. A temperature detection unit is provided in the air inlet of the heat exchange fin 1.

[0027] Specific implementation process: Low-temperature, low-pressure steam enters the leftmost rectangular fin from the inlet pipe 2. The initial steam temperature is monitored in real-time by a temperature detection unit installed inside the heat exchange fin inlet. The steam then flows in a "Z" shape along the interlaced pipes 4 within multiple hollow rectangular fins, extending its residence time and increasing the heat exchange area. After flowing through multiple rectangular fins, any incompletely condensed residual steam flows into the rightmost rectangular fin. The steam forms a meandering path along the interlaced through-grooves. Cooling water from the intermediate chamber is continuously injected into the rightmost rectangular fin through the inlet pipe, absorbing the residual heat from the steam. When the steam pressure accumulates to a certain level, the steam... The pressure will push the cooling water in the middle chamber to the rightmost chamber. When the water flow in the rightmost chamber reaches the gravity valve activation condition, the drain port will open, and the water will be discharged from the drain port. At the same time, the high-pressure gas flow will flow out from the overflow valve 6 to depressurize the inside of the heat exchange fin 4. Since the inside of the rectangular fin is hollow, when the low-temperature and low-pressure steam flows through the pipe 4 through the rectangular fin, it will turn into liquid condensate. The hollow rectangular fin can then store this condensate. When the condensate inside the rectangular fin accumulates to a certain level, the drain port at the bottom of the rectangular fin will be opened to collect the condensate for use by the thermal power generator. This can achieve the purpose of recycling and saving water.

[0028] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0029] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A combined dry cooler, comprising heat exchange fins (1), characterized in that: An air inlet pipe (2) is provided on the top left side of the heat exchange fin (1), and an exhaust pipe (3) is provided on the top right side of the heat exchange fin (1). An overflow valve (6) is provided on the top right side of the exhaust pipe (3). The heat exchange fin (1) includes a fixed frame and multiple rectangular pieces. The interior of each rectangular piece is hollow. Multiple rectangular pieces are fixedly installed on the fixed frame at equal intervals from left to right. The rectangular pieces are connected by pipes (4) and the pipes (4) are staggered vertically. Multiple baffles (5) are provided at equal intervals from left to right inside the rightmost rectangular piece. The baffles (5) are used to divide the interior of the rightmost rectangular piece into multiple chambers from left to right. Through grooves are provided at staggered vertically between the baffles (5) and the through grooves are used to connect the multiple chambers. A water inlet pipe is connected to the bottom of the chamber. The overflow valve (6) is connected to the right chamber. A drain outlet is provided at the bottom of the rightmost chamber.

2. The combined dry cooler according to claim 1, characterized in that: A temperature sensor and a water level monitoring sensor are installed in the middle cavity inside the rectangular plate on the far right.

3. A combined dry cooler according to claim 1, characterized in that: A cooling fan is fixedly installed on the top of the heat exchange fins (1).

4. A combined dry cooler according to claim 1, characterized in that: The periphery of the rectangular piece is designed with a sharp edge structure.

5. A combined dry cooler according to claim 1, characterized in that: The rectangular plate is provided with multiple vertical guide grooves.

6. A combined dry cooler according to claim 1, characterized in that: A temperature detection unit is provided inside the air inlet of the heat exchange fin (1).

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