Double-working-condition switching type heat exchanger for injection water system

Abstract

The invention relates to the technical field of heat exchangers, and particularly discloses a double-working-condition switching type heat exchanger for an injection water system, comprising: a shell comprising an upper shell and a lower shell, the upper shell and the lower shell are both provided with a shell pass inlet and a shell pass outlet, the top of the upper shell is provided with an exhaust valve, and the bottom of the lower shell is provided with a base and a drain valve; the two ends of the lifting driving mechanism are connected with the upper shell and the lower shell respectively; the coil pipes are arranged in the upper shell and the lower shell, and a tube pass inlet and a tube pass outlet are formed in the two ends of each coil pipe respectively; wherein a sealing rubber mat is arranged between the upper shell and the lower shell, a first through hole and a second through hole are formed in the sealing rubber mat, channel openings corresponding to the first through hole in position and branch pipes corresponding to the second through hole in position are arranged at the end of the upper shell and the end of the lower shell, and the branch pipes are communicated with the tube pass outlets in the close sides respectively. The heat exchanger is compact in structure, small in occupied space and capable of rapidly switching operation modes so as to meet the heat exchange requirements under different working conditions.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat exchangers, and particularly relates to a dual-condition switching heat exchanger for an injection water system. Background Art

[0002] With the continuous development of industrial equipment towards integration and intelligence, the compactness and versatility of equipment structures have gradually become important criteria for measuring their advancement. In industries such as chemical engineering, metallurgy, electric power, food processing, and medical and pharmaceutical industries, as a key thermal management unit, the performance of the heat exchange system directly affects the energy efficiency level and operating cost of the entire process flow, and has important engineering value.

[0003] Taking the injection water system as an example, it has extremely high requirements for the stability and accuracy of temperature control. The injection water needs to be heated or cooled to a set temperature through a heat exchanger to meet the requirements of subsequent sterilization, distribution, or filling processes. Most traditional heat exchange equipment is designed for a single condition and can only adapt to specific working conditions, such as specific flow rates, temperature ranges, and fluid medium types. When there are flow changes, load fluctuations, or different conditions such as heating and cooling need to be considered during the system operation, traditional heat exchangers often struggle to cope.

[0004] To cope with variable conditions, existing projects usually configure multiple different types of heat exchangers and switch the pipelines manually or mechanically. However, this method has several deficiencies: one is that it occupies a large amount of installation space, which is not conducive to system integration and layout optimization; the second is that it increases the equipment procurement and installation costs; the third is that there are heat energy losses and the risk of misoperation during the condition switching process, affecting the energy utilization efficiency; the fourth is that the system structure is complex, the maintenance difficulty is large, and the operation reliability is reduced.

[0005] Therefore, we propose a dual-condition switching heat exchanger for an injection water system to solve the above technical problems. Summary of the Invention

[0006] In order to solve the technical problems existing in the above-mentioned prior art, the present invention proposes a dual-condition switching heat exchanger for an injection water system.

[0007] The technical solution adopted by the present invention is as follows:

[0008] A dual-condition switching heat exchanger for an injection water system, comprising:

[0009] A housing, including an upper housing and a lower housing. Both the upper housing and the lower housing are provided with a shell-side inlet and a shell-side outlet. An exhaust valve is provided at the top of the upper housing, and a base and a drain valve are provided at the bottom of the lower housing;

[0010] A lifting drive mechanism, wherein both ends of the lifting drive mechanism are respectively connected to the upper shell and the lower shell, and can drive the upper shell to lift in a vertical direction;

[0011] Coil, the upper shell and the lower shell are both provided with coils, and are symmetrically arranged, and the two ends of the coil are respectively provided with a tube side inlet and a tube side outlet, and both pass through the outside of the shell;

[0012] Among them, a sealing rubber gasket is provided between the upper shell and the lower shell, both ends of the sealing rubber gasket extend out of the shell, a first through hole and a second through hole are opened on the sealing rubber gasket, and the ends of the upper shell and the lower shell are provided with a channel opening corresponding to the position of the first through hole and a branch pipe corresponding to the position of the second through hole, and the branch pipes are respectively connected to the pipe outlet on the adjacent side.

[0013] In a further technical solution, the lifting drive mechanism includes an upper ring plate, a lower ring plate and multiple hydraulic cylinders. The upper ring plate and the lower ring plate are fixedly mounted on the upper shell and the lower shell respectively. The hydraulic cylinders are evenly arranged along the circumference of the lower ring plate, and the two ends of the hydraulic cylinders are fixedly connected to the upper ring plate and the lower ring plate respectively.

[0014] In a further technical solution, both ends of the sealing rubber gasket are provided with an automatic winding mechanism, and the automatic winding mechanism includes a mounting seat, a reel, a servo motor and a traction rope. The mounting seat is connected to the hydraulic cylinder, and the reel and the servo motor are both installed on the mounting seat, and the reel is rotatably connected to the mounting seat, and the reel is transmission-connected to the output shaft of the servo motor. The traction rope is wound around the reel and connected to the sealing rubber gasket on the adjacent side.

[0015] In a further technical solution, the coil includes an outer ring tube body and an inner ring tube body. In the upper shell, the outer ring tube body is spirally wound from bottom to top by a stainless steel pipe, and then spirally wound from top to bottom to form the inner ring tube body. The tube side inlet is connected to the end of the outer ring tube body, and the tube side outlet is connected to the end of the inner ring tube body.

[0016] In a further technical solution, an inner tube and an outer tube are concentrically arranged inside the upper shell and the lower shell, the inner tube is arranged inside the outer tube, the outer ring tube body is wrapped around the outer side wall of the outer tube, and the inner ring tube body is wrapped around the outer side wall of the inner tube.

[0017] In a further technical solution, the upper end cover and the lower end cover are flange-connected to the sides of the upper shell and the lower shell away from each other, respectively. The exhaust valve is arranged on the upper end cover, and the discharge valve is arranged on the lower end cover.

[0018] In a further technical solution, the upper shell and the lower shell are both sleeved with reinforcement rings, and a plurality of connecting rods are connected to the reinforcement rings.

[0019] In a further technical solution, the position of the shell-side inlet is lower than that of the shell-side outlet.

[0020] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0021] The present invention adopts an upper and lower split design. Both the upper shell and the lower shell can be used as two independent heat exchange units, or they can be combined to operate, forming an integral device with a larger heat exchange area to meet the heat exchange requirements under different working conditions. Compared with the traditional method that requires multiple heat exchangers to be configured, there is no need to increase the number and volume of equipment, and it can flexibly respond to the working condition changes of the injection water system at different production capacities and different stages, effectively improving the adaptability and flexibility of the heat exchange system. Moreover, the overall structure of the equipment is compact, occupying a small space, and the operation mode can be switched simply and quickly, effectively improving the heat management efficiency and the convenience of equipment operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be described by way of examples with reference to the accompanying drawings, where:

[0023] Figure 1 is a schematic structural diagram of the present invention;

[0024] Figure 2 is Figure 1 a partial enlarged schematic view of part A in

[0025] Figure 3 is Figure 1 a partial enlarged schematic view of part B in

[0026] Reference numerals: 1 - upper shell, 2 - lower shell, 3 - shell-side inlet, 4 - shell-side outlet, 5 - exhaust valve, 6 - base, 7 - drain valve, 8 - tube-side inlet, 9 - tube-side outlet, 10 - sealing gasket, 11 - first through hole, 12 - second through hole, 13 - channel opening, 14 - branch pipe, 15 - upper ring plate, 16 - lower ring plate, 17 - hydraulic cylinder, 18 - mounting seat, 19 - reel, 20 - servo motor, 21 - towing rope, 22 - outer ring tube body, 23 - inner ring tube body, 24 - inner tube, 25 - outer tube, 26 - upper end cover, 27 - lower end cover, 28 - reinforcing ring, 29 - connecting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment:

[0029] Refer to Figures 1 - 3 , the present invention provides a dual-condition switching heat exchanger for an injection water system, comprising:

[0030] A housing, including an upper housing 1 and a lower housing 2. A shell-side inlet 3 and a shell-side outlet 4 are provided on both the upper housing 1 and the lower housing 2. An exhaust valve 5 is provided at the top of the upper housing 1, and a base 6 and a drain valve 7 are provided at the bottom of the lower housing 2;

[0031] A lifting drive mechanism, the two ends of which are respectively connected to the upper housing 1 and the lower housing 2, and can drive the upper housing 1 to lift in the vertical direction;

[0032] Coils, which are provided in both the upper housing 1 and the lower housing 2 and are symmetrically arranged. The two ends of the coils are respectively provided with a tube-side inlet 8 and a tube-side outlet 9, and both penetrate outside the housing;

[0033] Wherein, a sealing gasket 10 is provided between the upper housing 1 and the lower housing 2. Both ends of the sealing gasket 10 extend outside the housing. A first through hole 11 and a second through hole 12 are provided on the sealing gasket 10. Channel openings 13 corresponding to the position of the first through hole 11 and branch pipes 14 corresponding to the position of the second through hole 12 are provided at the ends of the upper housing 1 and the lower housing 2. The branch pipes 14 are respectively communicated with the tube-side outlets 9 on the adjacent side.

[0034] The specific working principle of this heat exchanger is as follows:

[0035] The structure of this heat exchanger adopts an upper and lower split design. Both the upper shell 1 and the lower shell 2 are provided with independent shell-side inlets 3 and shell-side outlets 4, as well as independent coiled pipes and the connected tube-side inlets 8 and tube-side outlets 9. This enables both the upper shell 1 and the lower shell 2 to be used as two independent heat exchange units, or they can also operate in combination to form an integral device with a larger heat exchange area to meet the heat exchange requirements under different working conditions. Specifically, in the independent operation mode, by staggering the positions of the first through-hole 11 and the second through-hole 12 on the sealing gasket 10 provided between the upper shell 1 and the lower shell 2 from the positions of the channel openings 13 and the branch pipes 14 at the ends of the upper shell 1 and the lower shell 2 respectively, the upper shell 1 and the lower shell 2 are isolated from each other, ensuring that the medium between the upper shell 1 and the lower shell 2 does not flow. At this time, the upper shell 1 and the lower shell 2 respectively form their own independent shell-side flow channels and tube-side flow channels, constituting two sets of heat exchange circuits that can operate independently, which can be used for the heat exchange requirements of injection water at different stages. In other industries, they can be used respectively for the working condition requirements with different parameters or different uses as needed. When a larger heat exchange area is required, that is, when the heat exchange capacity needs to be improved, this heat exchanger can be switched to the combined operation mode. First, the upper shell 1 is lifted vertically by the lifting drive mechanism to release the pressing state on the sealing gasket 10. Subsequently, by adjusting the position of the sealing gasket 10, the positions of the first through-hole 11 and the second through-hole 12 on it are aligned with the positions of the channel openings 13 and the branch pipes 14 at the ends of the upper shell 1 and the lower shell 2 respectively. Finally, the upper shell 1 is lowered back to its original position. At this time, the shell-side structures of the upper shell 1 and the lower shell 2 are connected through the channel openings 13, and the tube-side structures of the upper shell 1 and the lower shell 2 are also connected through the branch pipes 14, constituting an integral heat exchange system. In the combined operation mode, the heat exchange path needs to be adjusted through valves: close the shell-side outlet 4 of the lower shell 2 and the shell-side inlet 3 of the upper shell 1, use the shell-side inlet 3 of the lower shell 2 below as the inlet of the medium in the shell side, and the shell-side outlet 4 of the upper shell 1 as the outlet of the medium in the shell side. At the same time, close the original two tube-side outlets 9 of the upper shell 1 and the lower shell 2, use the tube-side inlet 8 of the lower shell 2 as the inlet of the medium in the tube side, and the tube-side inlet 8 of the upper shell 1 as the outlet of the medium in the tube side. This adjustment forms a continuous-flow tube-side flow channel and a continuous-flow shell-side flow channel, enabling the upper shell 1 and the lower shell 2 to exchange heat cooperatively, effectively expanding the heat exchange area, improving the heat exchange efficiency, and also avoiding the fluid disturbance caused by the multi-path medium flow, thereby enhancing the energy efficiency and operation stability of the heat exchange system. Compared with the traditional method that requires configuring multiple heat exchangers, this heat exchanger adopts a split design. Both the upper shell 1 and the lower shell 2 are independent heat exchange units, which can operate alone or in combination. Without increasing the number and volume of equipment, it can flexibly respond to the working condition changes of the injection water system at different production capacities and different stages, effectively enhancing the adaptability and flexibility of the heat exchange system.At the same time, the overall structure of the equipment is compact, occupies a small space, and the operating mode switching is simple and fast, which effectively improves the thermal management efficiency and the convenience of equipment operation and maintenance.

[0036] In a specific embodiment, see Figure 1 The lifting drive mechanism includes an upper ring plate 15, a lower ring plate 16 and a plurality of hydraulic cylinders 17. The upper ring plate 15 and the lower ring plate 16 are fixedly mounted on the upper shell 1 and the lower shell 2 respectively. The hydraulic cylinders 17 are evenly arranged along the circumference of the lower ring plate 16, and the two ends of the hydraulic cylinders 17 are fixedly connected to the upper ring plate 15 and the lower ring plate 16 respectively.

[0037] The lifting drive mechanism, through the coordinated cooperation of the upper ring plate 15, the lower ring plate 16 and multiple hydraulic cylinders 17, enables the upper shell 1 to be smoothly lifted and lowered in the vertical direction under hydraulic control, ensuring the operational stability and system operation safety of the heat exchanger during the switching process between the independent operation mode and the combined operation mode.

[0038] In a specific embodiment, see Figure 3 Both ends of the sealing rubber pad 10 are provided with an automatic winding mechanism, and the automatic winding mechanism includes a mounting seat 18, a reel 19, a servo motor 20 and a traction rope 21. The mounting seat 18 is connected to the hydraulic cylinder 17, and the reel 19 and the servo motor 20 are both mounted on the mounting seat 18, and the reel 19 is rotatably connected to the mounting seat 18. The reel 19 is transmission-connected to the output shaft of the servo motor 20, and the traction rope 21 is wound around the reel 19 and connected to the sealing rubber pad 10 on the adjacent side.

[0039] By arranging automatic winding mechanisms at both ends of the sealing gasket 10, when the upper shell 1 is raised, the servo motor 20 can be used to drive the reel 19 to automatically retract and release the traction rope 21, so as to achieve precise adjustment of the position of the sealing gasket 10, so that the positions of the first through hole 11 and the second through hole 12 thereon are aligned or misaligned with the positions of the channel opening 13 and the branch pipe 14 respectively, thereby achieving the connection or isolation of the medium channel between the upper shell 1 and the lower shell 2. The switching process is fast and efficient, which improves the automation level and operating efficiency of the operation mode switching.

[0040] In a specific embodiment, see Figure 1 The coil includes an outer ring tube body 22 and an inner ring tube body 23. In the upper shell 1, the outer ring tube body 22 is spirally wound from bottom to top by a stainless steel pipe, and then spirally wound from top to bottom to form the inner ring tube body 23. The tube side inlet 8 is connected to the end of the outer ring tube body 22, and the tube side outlet 9 is connected to the end of the inner ring tube body 23.

[0041] The coil is formed by continuous spiral winding of the outer ring tube body 22 and the inner ring tube body 23, forming a compact double-layer spiral structure as a whole. This structure effectively prolongs the flow path and residence time of the heat exchange medium in the coil, thereby significantly improving the heat exchange efficiency. At the same time, the double-layer spiral arrangement makes full use of the internal space of the shell, which helps to reduce the overall volume of the equipment and enhance the compactness of the structure and the heat exchange performance.

[0042] In a specific embodiment, see Figure 1 The upper shell 1 and the lower shell 2 are concentrically provided with an inner tube 24 and an outer tube 25 , the inner tube 24 is arranged on the inner side of the outer tube 25 , the outer ring tube body 22 is wound on the outer side wall of the outer tube 25 , and the inner ring tube body 23 is wound on the outer side wall of the inner tube 24 .

[0043] The inner tube 24 and the outer tube 25 are used to ensure countercurrent heat exchange of hot and cold fluids between the shell and the coil, which helps to improve the heat exchange efficiency. The outer ring tube body 22 is wrapped around the outer wall of the outer tube 25, and the inner ring tube body 23 is wrapped around the outer wall of the inner tube 24, which enhances the structural stability of the equipment and can also improve heat transfer to ensure efficient operation of the equipment.

[0044] In a specific embodiment, see Figure 1 The upper shell 1 and the lower shell 2 are flange-connected to an upper end cover 26 and a lower end cover 27 at the sides away from each other. The exhaust valve 5 is arranged on the upper end cover 26 , and the discharge valve 7 is arranged on the lower end cover 27 .

[0045] The upper shell 1 and the lower shell 2 are respectively connected to the upper end cover 26 and the lower end cover 27 through flanges, which provides convenience for the later management of the equipment, enables the equipment to be easily maintained and cleaned, and is conducive to improving the performance and service life of the equipment.

[0046] In a specific embodiment, see Figure 1 The upper shell 1 and the lower shell 2 are both sleeved with a reinforcement ring 28, and the reinforcement ring 28 is connected to a plurality of connecting rods 29.

[0047] By sleeved reinforcing rings 28 on the upper shell 1 and the lower shell 2, and connecting the reinforcing rings 28 to the building using the connecting rods 29, the overall stability of the device during use can be improved, the risk of shaking, displacement or overturning of the device can be reduced, and the safety and reliability of use can be enhanced.

[0048] In a specific embodiment, see Figure 1 , the position of the shell side inlet 3 is lower than the shell side outlet 4.

[0049] Adopting a layout with low inlet and high outlet is beneficial for the gas in the system to naturally rise with the fluid and be discharged from the outlet, avoiding the phenomenon of gas blockage caused by gas retention, thereby improving the heat exchange efficiency. At the same time, the medium can more fully contact the heat exchange surface during the rising process, and the flow path is more uniform, which helps to form a stable heat exchange process and improve the uniformity and overall performance of heat exchange.

[0050] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A dual-condition switching heat exchanger for a water for injection system, characterized in that, Comprising: A housing, including an upper housing (1) and a lower housing (2), both the upper housing (1) and the lower housing (2) are provided with a shell-side inlet (3) and a shell-side outlet (4), both the upper housing (1) and the lower housing (2) are provided with exhaust valves (5), and the bottom of the lower housing (2) is provided with a base (6) and a drain valve (7); A lifting drive mechanism, both ends of the lifting drive mechanism are respectively connected to the upper housing (1) and the lower housing (2), and can drive the upper housing (1) to lift in the vertical direction; Coiled pipes, coiled pipes are provided in both the upper housing (1) and the lower housing (2), and are symmetrically arranged. Both ends of the coiled pipes are respectively provided with a tube-side inlet (8) and a tube-side outlet (9), and both penetrate outside the housing; Wherein, a sealing gasket (10) is provided between the upper housing (1) and the lower housing (2), both ends of the sealing gasket (10) extend outside the housing, a first through hole (11) and a second through hole (12) are provided on the sealing gasket (10), and channel openings (13) corresponding to the position of the first through hole (11) and branch pipes (14) corresponding to the position of the second through hole (12) are respectively provided at the ends of the upper housing (1) and the lower housing (2), and the branch pipes (14) are respectively communicated with the tube-side outlets (9) on the adjacent side.

2. The dual-condition switching heat exchanger for the water for injection system according to claim 1, wherein The lifting drive mechanism includes an upper ring plate (15), a lower ring plate (16) and a plurality of hydraulic cylinders (17). The upper ring plate (15) and the lower ring plate (16) are respectively fixedly sleeved on the upper housing (1) and the lower housing (2). The hydraulic cylinders (17) are evenly arranged along the circumference of the lower ring plate (16), and both ends of the hydraulic cylinders (17) are respectively fixedly connected to the upper ring plate (15) and the lower ring plate (16).

3. The dual-condition switching heat exchanger for the water for injection system according to claim 2, wherein Automatic winding mechanisms are provided at both ends of the sealing gasket (10). The automatic winding mechanisms include mounting seats (18), winding drums (19), servo motors (20) and towing ropes (21). The mounting seats (18) are connected to the hydraulic cylinders (17). The winding drums (19) and the servo motors (20) are both mounted on the mounting seats (18), and the winding drums (19) are rotatably connected to the mounting seats (18). The winding drums (19) are drivingly connected to the output shafts of the servo motors (20). The towing ropes (21) are wound around the winding drums (19) and are connected to the sealing gasket (10) on the adjacent side.

4. The dual-condition switching heat exchanger for the water for injection system according to any one of claims 1-3, characterized in that, The coiled pipe includes an outer ring pipe body (22) and an inner ring pipe body (23). In the upper housing (1), the outer ring pipe body (22) is spirally wound from bottom to top by a stainless steel steel pipe, and then the inner ring pipe body (23) is spirally wound from top to bottom. The tube-side inlet (8) is connected to the end of the outer ring pipe body (22), and the tube-side outlet (9) is connected to the end of the inner ring pipe body (23).

5. The dual-condition switching heat exchanger for an injection water system according to claim 4, wherein Inner pipes (24) and outer pipes (25) are concentrically arranged inside both the upper housing (1) and the lower housing (2). The inner pipes (24) are arranged inside the outer pipes (25). The outer ring pipe body (22) is wound around the outer side wall of the outer pipe (25), and the inner ring pipe body (23) is wound around the outer side wall of the inner pipe (24).

6. The dual-condition switching heat exchanger for the water for injection system according to claim 1, wherein On the sides of the upper housing (1) and the lower housing (2) that are away from each other, an upper end cover (26) and a lower end cover (27) are respectively flange-connected. An exhaust valve (5) is provided on the upper end cover (26), and a discharge valve (7) is provided on the lower end cover (27).

7. The dual-condition switching heat exchanger for the water for injection system according to claim 1, characterized in that, Reinforcing rings (28) are sleeved on both the upper housing (1) and the lower housing (2), and a plurality of connecting rods (29) are connected to the reinforcing rings (28).

8. The dual-condition switching heat exchanger for the water for injection system according to claim 1, wherein, The position of the shell-side inlet (3) is lower than that of the shell-side outlet (4).

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