A waste heat recovery device for PPS tube heat exchange elements

Abstract

This utility model discloses a waste heat recovery device for PPS tube heat exchange elements, including one or more core components stacked vertically. The structure of a single core component is as follows: it includes side support components arranged at intervals on the left and right, and crossbeams are installed at the four corners of the two sets of side support components. A tube sheet is installed between the upper and lower crossbeams, and multiple PPS tubes are supported and installed between the front and rear tube sheets. A water collection component is installed on the bottom surface of the lowest core component. The bottom surface of the water collection component is arranged at an angle, and a drain flange is installed at the lower end of the bottom surface of the water collection component. A through-hole is set at the upper end of the higher end of the bottom surface of the water collection component. In use, the medium passing through the core component from top to bottom exchanges heat with the medium inside the PPS tube. By using PPS tubes as heat exchange elements, the problem of low-temperature corrosion in existing devices is solved. While realizing waste heat recovery, it effectively ensures the normal use of heat exchange and helps to extend the service life of the device.

Description

Technical Field

[0001] This utility model relates to the technical field of waste heat recovery devices, and in particular to a waste heat recovery device using a PPS tube heat exchange element. Background Technology

[0002] In industries such as textile printing and dyeing, high-temperature air is discharged after use, and the temperature of the discharged exhaust gas is usually close to 200 degrees Celsius. Directly discharging it into the atmosphere wastes energy and pollutes the environment. Therefore, a waste heat recovery device is used to extract energy from the exhaust gas, thereby reducing the temperature of the exhaust gas and saving energy.

[0003] In existing technologies, conventional stainless steel or carbon steel is typically used as heat exchange elements. However, in waste heat recovery applications involving corrosive gases, these existing heat exchange elements are highly susceptible to corrosion and perforation, leading to the malfunction of the heat exchanger. Utility Model Content

[0004] To address the aforementioned issues, this application provides a waste heat recovery device for a PPS tube heat exchange element with a reasonable structure, thereby solving the existing low-temperature corrosion problem. While realizing waste heat recovery, it effectively ensures the normal operation of the heat exchanger and helps to extend the service life of the device.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A waste heat recovery device for PPS tube heat exchange elements includes one or more core components stacked vertically. The structure of a single core component is as follows: it includes side support components arranged at intervals on the left and right, and crossbeams are installed at the four corners of the two sets of side support components. A tube sheet is installed between the upper and lower crossbeams, and multiple PPS tubes are supported and installed between the front and rear tube sheets. A water collection component is installed on the bottom surface of the lowest core component. The bottom surface of the water collection component is arranged at an angle. A drain flange is installed at the lower end of the bottom surface of the water collection component, and a through port is set at the upper end of the higher end of the bottom surface of the water collection component.

[0007] As a further improvement to the above technical solution:

[0008] In the stacked core components, crossbeams are attached to each other and fastened together; the water collection component is mounted on the bottom surface of the crossbeam below the bottommost core component.

[0009] The cross-section of the beam is rectangular or square, with an opening at one corner of the cross-section. The two sides that connect with the opening form a flange surface that fits and locks onto the outside.

[0010] The crossbeam is fitted with reinforcing plates at intervals along its length. Two of the reinforcing plates in the two crossbeams above the core assembly have lifting holes to form lifting lugs.

[0011] The structure of a single side support assembly is as follows: it includes a side plate, the upper and lower edges of which are bent and extended in the same direction to form a flange, and a vertical plate is installed on the side plate between the two ends of the upper and lower flanges; a horizontal support is installed between the left and right vertical plates, and a vertical support is installed between the flange and the horizontal support and between adjacent horizontal supports; corner brackets are installed circumferentially between the side plate and the flange and the vertical plate.

[0012] The PPS tube is installed through the tube sheet at its end, and the circumferential wall of the PPS tube is sealed to the tube sheet.

[0013] The tube sheet has stepped holes for the PPS tube to pass through, with the larger section of the stepped hole facing the opening of the PPS tube; a sealing ring is installed in the larger section of the stepped hole, and sealant is filled between the inner side of the stepped hole and the wall of the PPS tube.

[0014] Multiple stiffening plates are installed between the upper and lower crossbeams on the outer side of the tube sheet; multiple round steel bars are installed between the front and rear tube sheets.

[0015] The bottom core component has a support foot, and the height of the support foot is greater than the height of the water collection component.

[0016] A crossbar is installed between the two side support assemblies located above and below the PPS pipe.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In use, the medium passing through the core assembly from top to bottom exchanges heat with the medium inside the PPS tube. By using the PPS tube as the heat exchange element, the problem of low-temperature corrosion in the past is solved. While realizing waste heat recovery, the normal use of heat exchange is effectively guaranteed, which helps to extend the service life of the device.

[0019] This utility model also has the following advantages:

[0020] By creating stepped holes in the tube sheet, PPS tubes pass through the stepped holes, and sealing rings are installed inside the stepped holes. The sealing rings, combined with sealant, ensure reliable installation between the PPS tubes and the tube sheet, achieving a seal and effectively preventing gas leakage. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the structure of a single core assembly of this utility model.

[0023] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0024] Figure 4for Figure 2 A magnified view of a section at point B in the middle.

[0025] Figure 5 This is a schematic diagram of the assembly of the crossbeam, tube sheet, and PPS pipe of this utility model.

[0026] Figure 6 This is a schematic diagram of the installation of the PPS pipe and tube sheet of this utility model.

[0027] The components include: 1. Core assembly; 2. Support legs; 3. Water collection assembly; 4. Drainage flange;

[0028] 11. Side support assembly; 12. Crossbeam; 13. Crossbar; 14. Reinforcing plate; 15. PPS pipe; 16. Tube sheet; 17. Rib plate; 18. Sealing ring; 19. Round steel; 111. Horizontal support; 112. Side plate; 113. Corner seat; 114. Vertical support; 115. Vertical plate; 1121. Flanged edge; 161. Stepped hole. Detailed Implementation

[0029] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0030] like Figure 1 As shown, a waste heat recovery device for a PPS tube heat exchange element in this embodiment includes one or more core assemblies 1 stacked vertically, such as... Figure 2 As shown, the structure of a single core assembly 1 is as follows: it includes side support assemblies 11 arranged at intervals on the left and right, crossbeams 12 are installed at the four corners of the two sets of side support assemblies 11, tube sheets 16 are installed between the upper and lower crossbeams 12, and multiple PPS pipes 15 are supported and installed between the front and rear tube sheets 16; a water collection assembly 3 is installed on the bottom surface of the lowest core assembly 1, the bottom surface of the water collection assembly 3 is arranged at an angle, a drain flange 4 is installed at the lower end of the bottom surface of the water collection assembly 3, and a through port is set at the upper end of the higher end of the bottom surface of the water collection assembly 3.

[0031] In use, the medium passing through the core assembly 1 from top to bottom exchanges heat with the medium inside the PPS tube 15. By using the PPS tube 15 as a heat exchange element, the problem of low-temperature corrosion in the past is solved.

[0032] In this embodiment, the PPS tube 15 is made of polyphenylene sulfide (PPS), a new type of high-performance thermoplastic resin with advantages such as high mechanical strength, high temperature resistance, chemical resistance, flame retardancy, good thermal stability, and excellent electrical properties.

[0033] In actual use, the condensate generated during heat exchange is collected by the water collection assembly 3 located below and discharged downwards through the drain flange 4; the medium entering the core assembly 1 from above flows out from the through port on the side of the water collection assembly 3 after heat exchange.

[0034] In the stacked core components 1, the crossbeams 12 are attached to each other and fastened together with fasteners, which simplifies the overall structure and makes stacking and assembly convenient and reliable. The water collection component 3 is installed on the bottom surface of the crossbeam 12 below the bottom core component 1, which is convenient to install.

[0035] like Figure 3 and Figure 5 As shown, the cross-section of the beam 12 is rectangular or square, with an opening at one corner of the cross-section. The two sides connected to the opening form a flange surface that fits and locks with the outside. Thus, while the beam 12 serves as the structural support for the device, it can also be used as the basis for assembling and fitting the core components 1 with each other and with the external parts, effectively simplifying the structure.

[0036] Reinforcing plates 14 are installed at intervals along the length of the crossbeam 12 to help improve the structural support strength of the crossbeam 12; two reinforcing plates 14 in the two crossbeams 12 located above the core assembly 1 are provided with lifting holes to form lifting lugs, which facilitates lifting and transfer.

[0037] The structure of a single side support assembly 11 is as follows: it includes a side plate 112, the upper and lower edges of which are bent and extended in the same direction to form a flange 1121, and a vertical plate 115 is mounted on the side plate 112 between the two ends of the upper and lower flanges 1121; a horizontal support 111 is installed between the left and right vertical plates 115, and a vertical support 114 is installed between the flange 1121 and the horizontal support 111 and between adjacent horizontal supports 111; corner brackets 113 are installed circumferentially between the side plate 112 and the flange 1121 and the vertical plate 115, thereby effectively ensuring the structural strength of the side support assembly 11 and ensuring its support reliability.

[0038] The PPS tube 15 is installed through the tube sheet 16 at its end, which facilitates the connection between the end of the PPS tube 15 and external components or between the ends of the PPS tube 15; the circumferential wall of the PPS tube 15 is sealed with the tube sheet 16, which effectively prevents or even avoids gas leakage from the inside of the tube sheet 16 and the side support assembly 11.

[0039] like Figure 6 As shown, the tube sheet 16 has a stepped hole 161 through which the PPS tube 15 passes. The larger section of the stepped hole 161 is arranged facing the opening of the PPS tube 15. A sealing ring 18 is installed in the larger section of the stepped hole 161, and sealant is filled between the inside of the stepped hole 161 and the wall of the PPS tube 15.

[0040] In this embodiment, by opening a stepped hole 161 on the tube sheet 16, the PPS tube 15 passes through the stepped hole 161, and a sealing ring 18 is installed in the stepped hole 161. The sealing ring 18, combined with sealant, ensures reliable installation between the PPS tube 15 and the tube sheet 16, and achieves sealing, effectively preventing gas leakage.

[0041] In this embodiment, the sealant used is a high-temperature resistant adhesive, such as silicone steel adhesive.

[0042] Multiple stiffening plates 17 are installed between the upper and lower crossbeams 12 on the outer side of the tube sheet 16; multiple round steel bars 19 are installed between the front and rear tube sheets 16, such as... Figure 4 As shown.

[0043] In this embodiment, the installation of stiffening plates 17 and round steel bars 19 effectively enhances and ensures the structural strength of the device, and guarantees the structural reliability of the PPS pipe 15 that passes between the front and rear tube sheets 16.

[0044] The bottom core component 1 is equipped with a support leg 2. The height of the support leg 2 is greater than the height of the water collection component 3. The waste heat recovery device is supported on the ground or platform by the support leg 2.

[0045] A crossbar 13 is installed between the two side support assemblies 11 located above and below the PPS pipe 15. The crossbar 13 lifts and ensures the structural stability between the two sets of side support assemblies 11.

[0046] This invention solves the problem of easy corrosion and perforation of heat exchange elements in existing waste heat recovery systems. While realizing waste heat recovery, it effectively ensures the normal use of heat exchange and helps to extend the service life of the device.

[0047] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0048] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A waste heat recovery device of a PPS tube heat exchange element, characterized in that: It includes one or more core components (1) stacked vertically. The structure of a single core component (1) is as follows: it includes side support components (11) arranged on the left and right sides, and crossbeams (12) are installed at the four corners of the two sets of side support components (11). A tube sheet (16) is installed between the upper and lower crossbeams (12), and multiple PPS pipes (15) are supported between the front and rear tube sheets (16). A water collection component (3) is installed on the bottom surface of the lowest core component (1). The bottom surface of the water collection component (3) is arranged at an angle. A drain flange (4) is installed at the lower end of the bottom surface of the water collection component (3), and a through port is set above the higher end of the bottom surface of the water collection component (3).

2. A waste heat recovery device for a PPS tube heat exchanging element as claimed in claim 1, characterized in that: In the stacked core components (1), the crossbeams (12) are attached to each other and fastened together; the water collection component (3) is mounted on the bottom surface of the crossbeam (12) below the bottom core component (1).

3. The waste heat recovery device of the PPS tube heat exchange element according to claim 1, characterized in that: The cross-section of the beam (12) is rectangular or square, with an opening at one corner of the cross-section. The two sides connected to the opening form a flange surface that fits and locks with the outside.

4. A waste heat recovery apparatus for a PPS tube heat exchanging element as claimed in claim 3, characterized in that: The crossbeam (12) is fitted with reinforcing plates (14) spaced along its length. Two of the reinforcing plates (14) in the two crossbeams (12) above the core assembly (1) are provided with lifting holes to form lifting lugs.

5. The waste heat recovery device of the PPS tube heat exchange element according to claim 1, characterized in that: The structure of the single side support assembly (11) is as follows: it includes a side plate (112), the upper edge and the lower edge of the side plate (112) are bent and extended in the same direction to form a flange (1121), and a vertical plate (115) is installed on the side plate (112) between the two ends of the upper and lower flanges (1121); a horizontal support (111) is installed between the left and right vertical plates (115), and a vertical support (114) is installed between the flange (1121) and the horizontal support (111) and between adjacent horizontal supports (111); and a corner bracket (113) is installed between the side plate (112) and the flange (1121) and the vertical plate (115) in the circumferential direction.

6. The waste heat recovery device for a PPS tube heat exchange element as described in claim 1, characterized in that: The PPS pipe (15) is installed through the tube sheet (16) at its end, and the circumferential wall of the PPS pipe (15) is sealed to the tube sheet (16).

7. The waste heat recovery device of the PPS tube heat exchange element according to claim 1, characterized in that: The tube sheet (16) is provided with a stepped hole (161) through which the PPS tube (15) passes. The larger section of the stepped hole (161) is arranged facing the opening of the PPS tube (15). A sealing ring (18) is installed in the larger section of the stepped hole (161), and sealant is filled between the inner side of the stepped hole (161) and the wall of the PPS tube (15).

8. The waste heat recovery device of the PPS tube heat exchange element according to claim 1, characterized in that: Multiple stiffening plates (17) are installed between the upper and lower crossbeams (12) on the outer side of the tube sheet (16); multiple round steel bars (19) are installed between the front and rear tube sheets (16).

9. The waste heat recovery device of the PPS tube heat exchange element according to claim 1, characterized in that: The bottom core component (1) is fitted with a support foot (2), and the height of the support foot (2) is greater than the height of the water collection component (3).

10. A waste heat recovery device for a PPS tube heat exchange element as described in claim 1, characterized in that: A crossbar (13) is installed between the two side support assemblies (11) located above and below the PPS tube (15).

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