Heat exchange device of reheating unit

Abstract

The utility model relates to the technical field of heat exchange equipment, and discloses a reheating unit heat exchange device which comprises a shell, a heat exchange tube bundle and a cleaning pump, and the shell is of a hollow cavity structure and is made of corrosion-resistant stainless steel materials. According to the heat exchange device of the reheating unit, the top end of the heat exchange tube bundle is fixedly connected with the liquid inlet tube through the flange, the bottom end of the heat exchange tube bundle is fixedly connected with the liquid outlet tube through the flange, and the connection mode is convenient to install, disassemble and maintain; the liquid is kept at a proper flow rate in the tube bundle, the heat exchange effect is prevented from being influenced by too fast or too slow flow rate, the stability and the high efficiency of the heat exchange process are ensured, the pressure gauge I on the liquid inlet tube and the pressure gauge II on the liquid outlet tube can monitor the pressure condition of the liquid entering and exiting the heat exchange tube bundle in real time, and an operator can know the pressure state of the system in time. Safety accidents caused by abnormal pressure are prevented, and production safety is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange equipment technology, specifically a heat exchange device for reheat units. Background Technology

[0002] In modern industrial production, reheat units are increasingly widely used. For example, in industries such as power and chemicals, reheat units play a crucial role in improving energy efficiency and ensuring the stable operation of production processes. As one of the core components of a reheat unit, the performance of the heat exchange device directly affects the overall efficiency and reliability of the unit.

[0003] Traditional reheat unit heat exchange devices have many shortcomings. On the one hand, the heat exchange efficiency of existing heat exchange devices is low, resulting in serious energy waste. During the heat exchange process, due to unreasonable heat exchange structure design, the heat exchange area between the hot fluid and the cold fluid is limited, and the heat conduction path is long, which prevents heat from being transferred from the hot fluid to the cold fluid quickly and efficiently. A large amount of heat is lost, increasing energy consumption and production costs.

[0004] On the other hand, traditional devices suffer from poor reliability and stability. During long-term operation, they are prone to degradation in heat exchange performance due to scaling, corrosion, and other issues. In harsh working environments, such as high temperature, high pressure, and corrosive media, the metal materials of the heat exchange device are easily corroded, and scale accumulates rapidly on the heat exchange surface. This not only affects the heat exchange effect but may also cause safety hazards such as pipe blockage and leakage, shorten the service life of the device, and increase equipment maintenance costs and downtime.

[0005] Furthermore, existing heat exchange devices have complex structures, making installation and maintenance inconvenient. Installation requires complex positioning and connection operations, consuming significant manpower and time. When the device malfunctions and requires repair, its compact internal structure makes disassembly and replacement of damaged components difficult, further extending the maintenance cycle and impacting production continuity.

[0006] Therefore, it is necessary to propose a new type of heat exchange device for reheat units. Utility Model Content

[0007] In view of the shortcomings of the prior art, this utility model provides a heat exchange device for reheat units, which has the advantages of improving heat exchange efficiency, enhancing reliability, facilitating installation and maintenance, and having good economy and adaptability, thus solving the problems mentioned in the background art.

[0008] This utility model provides the following technical solution: a heat exchange device for a reheat unit, comprising a shell, a heat exchange tube bundle, and a cleaning pump. The shell is a hollow cavity structure made of corrosion-resistant stainless steel. The heat exchange tube bundle is disposed inside the shell. An inlet pipe is fixedly connected to the top of the heat exchange tube bundle via a flange, and an outlet pipe is fixedly connected to the bottom of the heat exchange tube bundle via a flange. A flow control valve and a pressure gauge are fixedly installed on the inlet pipe, and a pressure gauge is fixedly installed on the surface of the outlet pipe. The cleaning pump is fixedly installed at the top of the shell, and an integrated pipe is fixedly connected to the bottom of the cleaning pump. The integrated pipe is located inside the shell. An inlet is provided at the top of the shell, and the bottom of the shell is funnel-shaped and has an outlet valve fixedly connected to its bottom.

[0009] Preferably, the heat exchange tube bundle adopts a spiral structure, the material of the heat exchange tube bundle is a copper-nickel alloy tube, and turbulence fins are fixedly connected to the surface of the heat exchange tube bundle.

[0010] Preferably, the top wall of the shell is provided with a feed trough, the bottom end of the feed trough is provided with a leakage hole, the inlet is located directly above the feed trough, and the heat exchange tube bundle is located directly below the leakage hole.

[0011] Preferably, the surface of the integrated tube is provided with a plurality of high-pressure nozzles, the high-pressure nozzles being positioned corresponding to the heat exchange tube bundle and the turbulence fins.

[0012] Preferably, the outer surface of the shell is provided with a heat insulation layer, which is made of ceramic fiber cotton with high temperature resistance and low thermal conductivity.

[0013] Preferably, a bracket is fixedly connected to the bottom end of the housing.

[0014] Compared with existing technologies, this utility model has the following advantages: the top of the heat exchange tube bundle is fixedly connected to the inlet pipe via a flange, and the bottom is fixedly connected to the outlet pipe via a flange. This connection method is convenient for installation, disassembly, and maintenance. The flow control valve on the inlet pipe can accurately regulate the liquid flow rate entering the heat exchange tube bundle, ensuring a suitable flow velocity within the tube bundle and preventing the heat exchange effect from being affected by excessively fast or slow flow velocities. This guarantees the stability and efficiency of the heat exchange process. Pressure gauge one on the inlet pipe and pressure gauge two on the outlet pipe can monitor the pressure of the liquid entering and exiting the heat exchange tube bundle in real time, allowing operators to easily monitor the flow. It can promptly understand the system pressure status, prevent safety accidents caused by abnormal pressure, and ensure production safety. The cleaning pump is fixedly installed at the top of the shell, and the high-pressure nozzle connected to its bottom is located inside the shell. It can periodically clean the heat exchange tube bundle, effectively remove dirt and deposits attached to the surface of the tube bundle, keep the surface of the tube bundle clean, improve heat exchange efficiency, reduce the increase in heat transfer resistance caused by dirt accumulation, and thus reduce energy consumption. The setting of cleaning pump and high-pressure nozzle realizes automated cleaning, which is convenient to operate, reduces the labor intensity of manual cleaning, and at the same time reduces the downtime for cleaning, thereby improving production efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the shell structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the heat exchange tube bundle structure of this utility model.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 100. Shell; 101. Discharge valve; 102. Inlet; 103. Feed chute; 104. Leakage hole;

[0021] 200. Bracket;

[0022] 300. Heat exchanger tube bundle; 301. Turbulence fins; 302. Liquid inlet pipe; 303. Flow control valve; 304. Pressure gauge one; 305. Liquid outlet pipe; 306. Pressure gauge two;

[0023] 400. Insulation layer;

[0024] 500, Cleaning pump; 501, Integrated tubing; 502, High-pressure nozzle. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figures 1-3 As shown, the reheat unit heat exchange device includes a shell 100, a heat exchange tube bundle 300, and a cleaning pump 500. The shell 100 is a hollow cavity structure made of corrosion-resistant stainless steel, which can effectively resist the erosion of various chemical media, ensure long-term stable operation under complex working conditions, extend the service life of the equipment, and reduce equipment damage and maintenance costs caused by corrosion. The heat exchange tube bundle 300 is located inside the shell 100. The top of the heat exchange tube bundle 300 is fixedly connected to the liquid inlet pipe 302 through a flange, and the bottom of the heat exchange tube bundle 300 is fixedly connected to the liquid outlet pipe 305 through a flange. This connection method is convenient for installation, disassembly, and maintenance, while ensuring the sealing and stability of the connection, preventing liquid leakage, and improving the safety and reliability of the system. A flow control valve 303 and a pressure gauge 304 are fixedly installed on the liquid inlet pipe 302, and a pressure gauge 304 is fixedly installed on the surface of the liquid outlet pipe 305. Pressure gauge 306 and flow control valve 303 on inlet pipe 302 can precisely regulate the liquid flow rate entering heat exchange tube bundle 300, so that the liquid maintains a suitable flow rate in the tube bundle and avoids affecting the heat exchange effect due to excessive or slow flow rate. Pressure gauge 304 on inlet pipe 302 and pressure gauge 306 on outlet pipe 305 can monitor the pressure of liquid entering and exiting heat exchange tube bundle 300 in real time. Operators can understand the system pressure status in a timely manner, prevent safety accidents caused by abnormal pressure, ensure production safety, and ensure the stability and efficiency of the heat exchange process. Cleaning pump 500 is fixedly installed at the top of shell 100. Integrated pipe 501 is fixedly connected to the bottom of cleaning pump 500. Integrated pipe 501 is located inside shell 100. Inlet port 102 is provided at the top of shell 100. The bottom of shell 100 is funnel-shaped and is fixedly connected to outlet valve 101.

[0027] Further preferably, the heat exchange tube bundle 300 adopts a spiral structure and is made of copper-nickel alloy tubes. Turbulence fins 301 are fixedly connected to the surface of the heat exchange tube bundle 300. This structure enables the liquid to form strong turbulence within the heat exchange tube bundle 300, disrupting the boundary layer and allowing the fluid in the core region to fully participate in heat exchange, greatly improving the convective heat transfer coefficient. Compared to traditional straight-tube heat exchangers, the heat exchange efficiency can be increased by 20%-50%. The copper-nickel alloy has good corrosion resistance, thermal conductivity, and mechanical strength, enabling it to work stably for a long time under high temperature, high pressure, and highly corrosive conditions. Its service life can be extended by 3-5 times compared to traditional carbon steel or stainless steel heat exchangers, reducing the frequency of equipment replacement and maintenance costs. The turbulence fins 301 fixedly connected to the surface of the heat exchange tube bundle 300 further enhance the degree of fluid turbulence, making the fluid flow within the tube bundle more complex and chaotic, thereby improving heat exchange efficiency.

[0028] More preferably, the top wall of the shell 100 is provided with a feed trough 103, the bottom end of the feed trough 103 is provided with a drain hole 104, the inlet 102 is located directly above the feed trough 103, and the heat exchange tube bundle 300 is located directly below the drain hole 104.

[0029] Further preferably, the surface of the integrated tube 501 is provided with several high-pressure nozzles 502. The high-pressure nozzles 502 correspond to the positions of the heat exchange tube bundle 300 and the turbulence fins 301, which can periodically clean the heat exchange tube bundle 300, effectively remove dirt and deposits attached to the surface of the heat exchange tube bundle 300, keep the surface of the heat exchange tube bundle 300 clean, improve heat exchange efficiency, reduce the increase in heat transfer resistance caused by dirt accumulation, and thus reduce energy consumption.

[0030] Preferably, the outer shell 100 is provided with a heat insulation layer 400. The heat insulation layer 400 is made of ceramic fiber cotton with high temperature resistance and low thermal conductivity, which can effectively reduce heat loss, improve energy utilization, and reduce energy consumption. Under high temperature conditions, the heat insulation layer 400 can ensure that the heat inside the equipment is not easily transferred to the outside, maintain the temperature inside the equipment, and help ensure the efficient operation of the heat exchange process.

[0031] More preferably, a bracket 200 is fixedly connected to the bottom end of the housing 100.

[0032] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat exchange device of a reheat unit, comprising a shell (100), a heat exchange tube bundle (300) and a cleaning pump (500), characterized in that: The shell (100) is a hollow cavity structure made of corrosion-resistant stainless steel. The heat exchange tube bundle (300) is located inside the shell (100). The top end of the heat exchange tube bundle (300) is fixedly connected to the liquid inlet pipe (302) via a flange, and the bottom end of the heat exchange tube bundle (300) is fixedly connected to the liquid outlet pipe (305) via a flange. A flow control valve (303) and a pressure gauge (304) are fixedly installed on the liquid inlet pipe (302). Pressure gauge 2 (306) is fixedly installed on the surface of liquid pipe (305). The cleaning pump (500) is fixedly installed at the top of the housing (100). The bottom end of the cleaning pump (500) is fixedly connected to an integrated pipe (501). The integrated pipe (501) is located inside the housing (100). The top end of the housing (100) is provided with a feed inlet (102). The bottom end of the housing (100) is funnel-shaped and is fixedly connected to a discharge valve (101).

2. The reheat unit heat exchange arrangement of claim 1, wherein: The heat exchange tube bundle (300) adopts a spiral structure. The heat exchange tube bundle (300) is made of copper-nickel alloy tube. Turbulence fins (301) are fixedly connected to the surface of the heat exchange tube bundle (300).

3. The reheat unit heat exchange arrangement of claim 1, wherein: The top wall of the housing (100) is provided with a feed trough (103), and a drain hole (104) is provided at the bottom end of the feed trough (103). The inlet (102) is located directly above the feed trough (103), and the heat exchange tube bundle (300) is located directly below the drain hole (104).

4. The reheat unit heat exchange arrangement of claim 1, wherein: The surface of the integrated tube (501) is provided with a number of high-pressure nozzles (502), and the high-pressure nozzles (502) correspond to the positions of the heat exchange tube bundle (300) and the turbulence fins (301).

5. The reheat unit heat exchange arrangement of claim 4, wherein: The outer surface of the shell (100) is provided with a heat insulation layer (400), which is made of ceramic fiber cotton with high temperature resistance and low thermal conductivity.

6. The reheat unit heat exchange arrangement of claim 1, wherein: A bracket (200) is fixedly connected to the bottom end of the housing (100).

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