Low-temperature waste heat recycling heat exchanger

Abstract

The utility model relates to the technical field of heat exchangers, in particular to a low-temperature waste heat recycling heat exchanger. Comprising a shell, the shell is connected with an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe are distributed diagonally, the shell is connected with a first circulating pipe and a second circulating pipe, the first circulating pipe and the second circulating pipe are jointly connected with a heat exchange pipe, the heat exchange pipe is arranged in a snake shape, the shell is connected with a spiral baffle plate, and the spiral baffle plate is arranged in a spiral surrounding mode along the inner wall of the shell. The shell is detachably connected with a connecting plate, the connecting plate is connected with a filter plate, the shell is provided with a sliding groove, the filter plate is in sliding connection with the sliding groove, the connecting plate is in threaded connection with a fixing bolt, the shell is provided with a screw hole, and the fixing bolt is in threaded connection with the screw hole. By the adoption of the device, pollutants in the gas can be effectively removed, it is guaranteed that the gas after heat exchange reaches the standard and is discharged, and air pollution is avoided.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically a low-temperature waste heat recovery and utilization heat exchanger. Background Technology

[0002] A heat exchanger, also known as a heat exchanger or heat exchange equipment, is a device used to transfer heat from a hot fluid to a cold fluid to meet specified process requirements. It is an industrial application of convective heat transfer and heat conduction. Heat exchangers can be classified in different ways, and according to their operation process, they can be divided into indirect-flow type, mixing type, and regenerative type.

[0003] In traditional heat exchangers, the gas is directly released into the air after heat exchange, which can easily cause pollution and secondary hazards. Utility Model Content

[0004] The present invention aims to provide a low-temperature waste heat recovery heat exchanger to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A low-temperature waste heat recovery heat exchanger includes a shell, an inlet pipe and an outlet pipe connected to the shell, the inlet pipe and the outlet pipe being diagonally distributed; a first circulation pipe and a second circulation pipe connected to the shell, the first circulation pipe and the second circulation pipe being connected to a heat exchange tube, the heat exchange tube being arranged in a serpentine pattern; a spiral baffle plate connected to the shell, the spiral baffle plate being spirally arranged around the inner wall of the shell; the heat exchange tube being connected to the spiral baffle plate; a vertical rod connected to the shell; the spiral baffle plate being connected to the vertical rod; a connecting plate detachably connected to the shell; a filter plate connected to the connecting plate; a sliding groove provided in the shell; the filter plate being slidably connected to the sliding groove; a fixing bolt threadedly connected to the connecting plate; and a screw hole provided in the shell; the fixing bolt being threadedly connected to the screw hole.

[0007] Preferably, the first circulation pipe and the second circulation pipe are respectively connected to flanges.

[0008] Preferably, the connecting plate is connected to a handle.

[0009] Preferably, the connecting plate is connected to a sealing ring, and the sealing ring cooperates with the housing.

[0010] Preferably, the housing is connected to a temperature display screen, and the second circulation tube is connected to a temperature sensor, the temperature sensor being electrically connected to the temperature display screen.

[0011] Preferably, the shell is connected to an insulation layer, which is made of rock wool.

[0012] The beneficial effects of this technical solution compared to existing technologies are as follows:

[0013] (1) This scheme uses a connecting plate, filter plate, slide groove, fixing bolts and screw holes. The filter plate can effectively remove pollutants from the gas through physical interception, ensuring that the gas after heat exchange meets the emission standards and preventing untreated pollutants from directly entering the atmosphere and polluting the air. The connecting plate is connected to the shell by fixing bolts. After disassembly, the filter plate can be pulled out along the slide groove, which is convenient for periodically cleaning impurities in the gas, avoiding blockage of heat exchange tubes or baffle gaps, and maintaining long-term high-efficiency operation. By setting a spiral baffle, the gas is guided to flow in a spiral shape, increasing the degree of turbulence, reducing the boundary layer thermal resistance, and avoiding the "dead zone" problem of traditional vertical baffles, further improving the heat exchange efficiency. In addition, the heat exchange tubes are fixedly connected to the spiral baffle, enhancing the overall structural stability and preventing vibration or displacement caused by fluid impact. By setting the heat exchange tubes in a serpentine arrangement, the length of the heat exchange tubes in the shell is greatly increased, significantly expanding the heat exchange area in a limited space, so that the circulating medium and the gas can have more sufficient heat exchange.

[0014] (2) By setting up a flange, it is easy to quickly assemble or disassemble with external circulation systems (such as water pumps, radiators, etc.), thereby improving system compatibility and installation flexibility.

[0015] (3) By setting a sealing ring, gas leakage is prevented from affecting heat exchange efficiency or causing safety hazards. This ensures that the equipment can operate stably for a long time under high pressure and high temperature, and at the same time facilitates regular maintenance of the filter plate without affecting the sealing performance.

[0016] (4) By setting up a temperature display screen and a temperature sensor, the temperature sensor collects the temperature of the circulating medium in real time and presents it intuitively through the temperature display screen, which makes it easy for operators to monitor the heat exchange effect in real time and adjust the operating parameters in a timely manner.

[0017] (5) By setting up a rock wool insulation layer, heat loss can be effectively reduced, which not only saves energy costs, but also avoids safety hazards caused by excessive surface temperature of the equipment, such as burns to operators or ignition of flammable materials in the vicinity. At the same time, the good insulation effect helps to maintain a stable heat exchange environment inside the shell, further improves heat exchange efficiency, and ensures the stability and reliability of equipment operation. Attached Figure Description

[0018] Figure 1 This is a front sectional view of the present invention;

[0019] Figure 2 This is a front view of the present invention;

[0020] Reference numerals in the attached drawings: 1. Shell; 2. Spiral baffle; 3. Heat exchange tube; 4. Vertical rod; 5. First circulation pipe; 6. Filter plate; 7. Outlet pipe; 8. Screw hole; 9. Slide groove; 10. Second circulation pipe; 11. Flange; 12. Insulation layer; 13. Inlet pipe; 14. Connecting plate; 15. Fixing bolt; 16. Handle; 17. Temperature display screen. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0022] like Figure 1-2 The low-temperature waste heat recovery heat exchanger shown includes a shell 1. An inlet pipe 13 and an outlet pipe 7 are respectively connected to the top and bottom of the shell 1. The inlet pipe 13 and the outlet pipe 7 are diagonally distributed, which can guide the gas to form a more sufficient turbulent flow in the shell 1, prolong the residence time of the gas in the shell 1, thereby significantly increasing the contact area and contact time between the gas and the heat exchange tube 3, and greatly improving the heat exchange efficiency. The shell 1 has a first circulation pipe 5 and a second circulation pipe 10 connected to its left and right ends, respectively. Both the first circulation pipe 5 and the second circulation pipe 10 are connected to a heat exchange pipe 3. The heat exchange pipe 3 is arranged in a serpentine pattern within the shell 1. This serpentine arrangement significantly increases the length of the heat exchange pipe 3 within the shell 1, substantially expanding the heat exchange area within a limited space. This allows for more thorough heat exchange between the circulating medium and the gas. A spiral baffle 2 is connected inside the shell 1, spirally surrounding the inner wall of the shell 1. The heat exchange pipe 3 is connected to the spiral baffle 2. A vertical rod 4 is connected to the inner wall of the shell 1, with the middle of the spiral baffle 2 connected to the vertical rod 4. The spiral baffle 2 further guides the gas to flow in a spiral pattern within the shell 1, continuously enhancing the turbulence of the gas and making the contact between the gas and the surface of the heat exchange pipe 3 more uniform and thorough, effectively improving heat exchange efficiency. Furthermore, the spiral baffle 2 also provides support and fixation for the heat exchange pipe 3, preventing it from shaking or shifting under the impact of gas flow, ensuring the stability and safety of the equipment operation. A connecting plate 14 is detachably connected to the outer wall of the housing 1. Two filter plates 6 are connected to the connecting plate 14. The housing 1 has corresponding grooves 9 for the filter plates 6, and the two filter plates 6 are slidably connected to their respective grooves 9. Several fixing bolts 15 are threaded to both ends of the connecting plate 14, and screw holes 8 are provided in the housing 1 corresponding to the fixing bolts 15. The fixing bolts 15 are threaded into the screw holes 8. When cleaning the filter plates 6 is required, simply unscrew the fixing bolts 15 at both ends of the connecting plate 14 to remove the filter plates 6 from the grooves 9. Regularly cleaning the filter plates 6 effectively intercepts impurities in the gas, preventing these impurities from clogging the heat exchange tubes 3 or the gaps between the baffles, ensuring long-term efficient operation of the equipment.

[0023] like Figure 2As shown, the first circulation pipe 5 and the second circulation pipe 10 are respectively connected to flanges 11. Flanges 11 facilitate quick connection and disassembly with the external circulation system, simplifying equipment installation, commissioning, and subsequent maintenance. A handle 16 is connected to the outer wall of the connecting plate 14. The handle 16 provides a convenient leverage point for operators, making the removal and installation of the filter plate 6 easier and less strenuous. A sealing ring is connected to the connecting plate 14, which cooperates with the housing 1. The sealing ring ensures the seal between the connecting plate 14 and the housing 1, preventing gas leakage at the connection point and ensuring that the gas must be purified by the filter plate 6 before entering the subsequent heat exchange process. A temperature display screen 17 is connected to the housing 1, and a temperature sensor is connected to the second circulation pipe 10. The temperature sensor is electrically connected to the temperature display screen 17. The temperature sensor monitors the temperature of the circulating medium in real time and transmits the data to the temperature display screen 17 for display. Operators can intuitively understand the temperature changes during equipment operation through the temperature display screen 17 and adjust the equipment in a timely manner according to actual needs.

[0024] like Figure 1 As shown, an insulation layer 12 is connected to the outside of the shell 1. The insulation layer 12 is made of rock wool and has good thermal insulation performance. It can effectively reduce the heat loss to the external environment during equipment operation, reduce heat loss, and improve energy utilization efficiency.

[0025] The specific implementation process is as follows:

[0026] First, the low-temperature gas enters through the inlet pipe 13 at the top of the shell 1. After impurities are intercepted by the filter plate 6 at the connecting plate 14, the gas flows along the inner wall of the shell 1 to the diagonally opposite outlet pipe 7. Guided by the spiral baffle plate 2, the gas flows in a spiral shape and comes into full contact with the serpentine heat exchange tubes 3, transferring heat to the circulating medium inside the tubes. The medium circulates with the external system through the second circulation pipe 10 and the flange 11. The temperature sensor on the second circulation pipe 10 monitors the medium temperature in real time and transmits the data to the temperature display screen 17 on the shell 1, allowing the operator to adjust the equipment accordingly.

[0027] When the filter plate 6 needs to be cleaned, unscrew the fixing bolts 15 of the connecting plate 14 and pull out the filter plate 6 through the handle 16. At this time, the filter plate 6 can be cleaned.

[0028] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A low-temperature waste heat recovery heat exchanger, characterized in that: Includes a shell (1), the shell (1) is connected to an inlet pipe (13) and an outlet pipe (7), the inlet pipe (13) and the outlet pipe (7) are diagonally distributed, the shell (1) is connected to a first circulation pipe (5) and a second circulation pipe (10), the first circulation pipe (5) and the second circulation pipe (10) are connected to a heat exchange pipe (3), the heat exchange pipe (3) is arranged in a serpentine shape, the shell (1) is connected to a spiral baffle (2), the spiral baffle (2) is arranged spirally around the inner wall of the shell (1), the heat exchange pipe (3) The housing (1) is connected to the spiral baffle (2), the housing (1) is connected to the upright (4), the spiral baffle (2) is connected to the upright (4), the housing (1) is detachably connected to the connecting plate (14), the connecting plate (14) is connected to the filter plate (6), the housing (1) has a sliding groove (9), the filter plate (6) is slidably connected to the sliding groove (9), the connecting plate (14) is threadedly connected to the fixing bolt (15), the housing (1) has a screw hole (8), and the fixing bolt (15) is threadedly connected to the screw hole (8).

2. The low-temperature waste heat recovery heat exchanger as described in claim 1, characterized in that: The first circulation pipe (5) and the second circulation pipe (10) are respectively connected to flanges (11).

3. The low-temperature waste heat recovery heat exchanger as described in claim 1, characterized in that: The connecting plate (14) is connected to a handle (16).

4. The low-temperature waste heat recovery heat exchanger as described in claim 1, characterized in that: The connecting plate (14) is connected to a sealing ring, which cooperates with the housing (1).

5. A low-temperature waste heat recovery heat exchanger as described in claim 1, characterized in that: The housing (1) is connected to a temperature display screen (17), and the second circulation pipe (10) is connected to a temperature sensor. The temperature sensor is electrically connected to the temperature display screen (17).

6. A low-temperature waste heat recovery heat exchanger as described in claim 1, characterized in that: The shell (1) is connected to an insulation layer (12), which is made of rock wool.

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