Integrated tubular heat exchanger

Abstract

The utility model provides an integrated tubular heat exchanger which comprises a shell, and the shell is provided with a hot fluid inlet pipe, a cold fluid inlet pipe, a hot fluid outlet pipe and a cold fluid outlet pipe, ultrasonic waves are generated through the ultrasonic generator and then transmitted to the first heat exchange pipeline and the second heat exchange pipeline of the radiating surface of the ultrasonic transducer through the ultrasonic transmission cable, so that fluid in the first heat exchange pipeline and the second heat exchange pipeline generates bubbles; impact waves generated by the bubbles enable scale layers and impurities on the inner walls of the first heat exchange pipeline and the second heat exchange pipeline to be effectively impacted, broken and disengaged, and therefore descaling of the inner walls of the first heat exchange pipeline and the second heat exchange pipeline is achieved; and meanwhile, a dosing pipe is arranged, so that a descaling agent is convenient to put, ultrasonic waves are matched for deep descaling, corrosion and damage of a scale layer and impurity accumulation to a pipeline are prevented, the heat exchange efficiency of the heat exchanger is improved, energy consumption is reduced, the operation efficiency of the whole heat exchanger is improved, and the service life of the heat exchanger is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of tubular heat exchangers, in particular to an integrated tubular heat exchanger. Background Art

[0002] Tubular heat exchangers are widely used in many industrial fields, such as chemical, petroleum, medicine, food, papermaking and metallurgy industries. Tubular heat exchangers are based on the principle of heat transfer, and are devices that transfer heat from a high-temperature object to a low-temperature object to achieve heat exchange between two or more fluids. By completing the heat transfer between different fluids, the purpose of saving energy, improving efficiency and ensuring quality can be achieved.

[0003] However, during the use of the tubular heat exchanger, impurities or precipitation in the hot fluid itself, and precipitation or debris when the cold fluid is heated, will adhere to the heat exchange pipe and block the internal structure of the pipe, thereby affecting the heat transfer efficiency and even making the heat exchanger unusable, resulting in heat waste and affecting the normal operation of the heat exchange process. Therefore, it is necessary to provide an integrated tubular heat exchanger with good descaling ability. Utility Model Content

[0004] Aiming at the technical problem that long-term use of tubular heat exchangers in the prior art will lead to scale accumulation in the heat exchange tubes, thus affecting heat transfer and heat utilization, the utility model provides a double-pass integrated tubular heat exchanger.

[0005] An integrated tubular heat exchanger comprises a shell, on which a hot fluid inlet pipe, a cold fluid inlet pipe and their corresponding hot fluid outlet pipes and cold fluid outlet pipes are provided, and a heat exchange pipe assembly, a driving mechanism and an ultrasonic generator are provided in the shell; the heat exchange pipe assembly comprises a plurality of groups of first heat exchange pipes and second heat exchange pipes; both ends of the first heat exchange pipe are respectively connected with the hot fluid inlet pipe and the hot fluid outlet pipe, and both ends of the second heat exchange pipe are respectively connected with the cold fluid inlet pipe and the cold fluid outlet pipe; a dosing pipe is provided on the hot fluid inlet pipe and the cold fluid inlet pipe, and a regulating valve is provided on the dosing pipe; at least one sliding rod is provided along the horizontal direction on the inner wall of the shell, and a moving seat is slidably connected to the sliding rod, and at least one ultrasonic transducer is installed on the moving seat; the ultrasonic generator is connected to the ultrasonic transducer through a transmission cable, and the radiation surface of the ultrasonic transducer is facing the heat exchange pipe assembly; the driving mechanism is used to drive the moving seat to move reciprocatingly horizontally along the sliding rod, thereby driving the ultrasonic transducer to move reciprocatingly horizontally.

[0006] Furthermore, the shell includes a cylinder and a first cylinder cover and a second cylinder cover detachably mounted at both ends of the cylinder, the hot fluid inlet pipe and the cold fluid outlet pipe are arranged on the first cylinder cover, and the hot fluid outlet pipe and the cold fluid inlet pipe are arranged on the second cylinder cover.

[0007] Furthermore, the pipe openings of the hot fluid inlet pipe and the cold fluid inlet pipe can be detachably installed with filter screens, and the inside of the filter screens is filled with an activated carbon layer.

[0008] Furthermore, a flow meter for detecting fluid flow is provided in each of the hot fluid outlet pipe and the cold fluid outlet pipe.

[0009] Furthermore, the dosing pipe is connected to a dosing pump, and the dosing pump is connected to a liquid storage tank containing descaling and cleaning liquid.

[0010] Furthermore, the ultrasonic generator can generate ultrasonic waves of different frequencies and powers.

[0011] Furthermore, a plurality of fins are provided between adjacent first heat exchange pipes and second heat exchange pipes.

[0012] Furthermore, the first heat exchange pipe and the second heat exchange pipe are evenly distributed in the shell, and sealing rubber rings are provided at the connections between the first heat exchange pipe and the second heat exchange pipe and the hot fluid inlet pipe, cold fluid inlet pipe, hot fluid outlet pipe and cold fluid outlet pipe.

[0013] Furthermore, the hot fluid inlet pipe, the cold fluid inlet pipe, the hot fluid outlet pipe and the cold fluid outlet pipe are all provided with solenoid valves.

[0014] Furthermore, a supporting mechanism is provided at the bottom of the shell, and the supporting mechanism includes a plurality of supporting brackets fixedly connected to the outer wall of the shell, and a shock-absorbing pad is provided between the contact surface between the supporting bracket and the outer wall of the shell.

[0015] The beneficial effects of the utility model are as follows: the utility model provides an integrated tubular heat exchanger, comprising a shell, on which a hot fluid inlet pipe, a cold fluid inlet pipe and their corresponding hot fluid outlet pipes and cold fluid outlet pipes are provided. An ultrasonic generator generates ultrasonic waves which are transmitted to the first heat exchange pipe and the second heat exchange pipe on the radiation surface of the ultrasonic transducer through an ultrasonic transmission cable, so that bubbles are generated in the fluids in the first heat exchange pipe and the second heat exchange pipe. The shock waves generated by the bubbles effectively impact and break the scale layers and impurities on the inner walls of the first heat exchange pipe and the second heat exchange pipe, thereby achieving descaling of the inner walls of the first heat exchange pipe and the second heat exchange pipe. At the same time, a dosing pipe is provided to facilitate the addition of descaling agents, and deep descaling is performed in conjunction with ultrasonic waves to prevent the accumulation of scale layers and impurities from corroding and damaging the pipes, thereby helping to improve the heat exchange efficiency of the heat exchanger, reduce energy consumption, improve the operating efficiency of the entire heat exchanger and extend the service life of the heat exchanger.

[0016] In addition, the utility model also installs filter screens at the pipe openings of the hot fluid inlet pipe and the cold fluid inlet pipe. The filter screens can remove large particles of impurities in the incoming fluid, effectively preventing these impurities from entering the first heat exchange pipe and the second heat exchange pipe and accumulating to form a scale layer, and can effectively slow down the accumulation speed of the scale layer in the first heat exchange pipe and the second heat exchange pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of an integrated tubular heat exchanger provided by the utility model;

[0018] Figure 2 A schematic diagram of the cross-sectional structure of an integrated tubular heat exchanger provided by the utility model;

[0019] Figure ID

[0020] 1. Shell; 11. Cylinder; 12. First cylinder cover; 13. Second cylinder cover; 14. Driving mechanism; 15. Ultrasonic generator; 16. First heat exchange pipe; 17. Second heat exchange pipe; 18. Sliding rod; 19. Moving seat; 20. Ultrasonic transducer; 2. Hot fluid inlet pipe; 3. Cold fluid inlet pipe; 4. Hot fluid outlet pipe; 5. Hot fluid inlet pipe; 6. Dosing pipe; 7. Regulating valve; 8. Filter screen; 9. Fins; 10. Support mechanism; 101. Bracket. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] refer to Figure 1 As shown, the utility model provides an integrated tubular heat exchanger, comprising a shell 1, on which a hot fluid inlet pipe 2, a cold fluid inlet pipe 3 and corresponding hot fluid outlet pipes 4 and cold fluid outlet pipes 5 are provided.

[0023] Specifically, the housing 1 includes a cylinder 11 and a first cylinder cover 12 and a second cylinder cover 13 detachably mounted at both ends of the cylinder 11, the hot fluid inlet pipe 2 and the cold fluid outlet pipe 5 are arranged on the first cylinder cover 12, and the hot fluid outlet pipe 4 and the cold fluid inlet pipe 3 are arranged on the second cylinder cover 13. Through the detachable design, it is convenient to overhaul, maintain or replace the components at various positions in the housing 1. In this embodiment, the hot fluid inlet pipe 2 and the cold fluid outlet pipe 5 are located below the first cylinder cover 12, and the hot fluid outlet pipe 4 and the cold fluid inlet pipe 3 are located above the second cylinder cover 13.

[0024] A heat exchange pipe assembly (not shown in the figure), a driving mechanism 14 and an ultrasonic generator 15 are provided in the shell 1; the heat exchange pipe assembly includes a plurality of groups of first heat exchange pipes 16 and second heat exchange pipes 17; both ends of the first heat exchange pipe 16 are respectively connected to the hot fluid inlet pipe 2 and the hot fluid outlet pipe 4, and both ends of the second heat exchange pipe 17 are respectively connected to the cold fluid inlet pipe 3 and the cold fluid outlet pipe 5.

[0025] The utility model provides an integrated tubular heat exchanger which adopts a double-tube-pass design, thereby preventing the fluid in the shell-pass from affecting the inside of the shell, and having a lower requirement on the sealing performance of the shell 1.

[0026] When the heat exchanger is working, the hot fluid flows in through the hot fluid inlet pipe 2 below the first tube cover 12, flows through a plurality of first heat exchange pipes 16, and flows out from the hot fluid outlet pipe 4 above the second tube cover 13; while the cold fluid flows in through the cold fluid inlet pipe 3 above the second tube cover 13, flows through a plurality of second heat exchange pipes 17, and flows out from the cold fluid outlet pipe 5 below the second tube cover 13; when the cold fluid flows through the second heat exchange pipe 17, it absorbs and exchanges the heat of the hot fluid in the first heat exchange pipe 16 through the pipe wall, so that the outflowing cold fluid has a certain amount of heat, realizing the transfer of fluid heat, and realizing full utilization of heat.

[0027] The hot fluid inlet pipe 2 and the cold fluid inlet pipe 3 are both provided with a dosing pipe 6, and the dosing pipe 6 is provided with a regulating valve 7. Through the dosing pipe 6, a solid or liquid descaling agent can be added to the first heat exchange pipe 16 or the second heat exchange pipe 17, thereby treating the scale layer and impurities attached to the inner wall of the first heat exchange pipe 16 or the second heat exchange pipe 17. By adjusting the valve opening of the regulating valve 7, the speed and amount of adding the agent in the dosing pipe 6 can be controlled.

[0028] In this embodiment, the descaling agent is in liquid form. The dosing pipe 6 is connected to a dosing pump (not shown in the figure), and the dosing pump is connected to a liquid medicine storage tank containing descaling cleaning liquid. Through the action of the dosing pump, the descaling cleaning liquid is extracted from the liquid medicine storage tank and transported to the hot fluid inlet pipe 2 and the cold fluid inlet pipe 3 through the dosing pipe 6, so that the descaling cleaning liquid chemically reacts with the scale layer and impurities attached to the inner wall of the first heat exchange pipe 16 or the second heat exchange pipe 17 to remove the dirt in the pipe. And by adjusting the opening of the regulating valve 7, the amount of descaling cleaning liquid put into the pipe can be accurately controlled.

[0029] At least one slide bar 18 is provided along the inner wall of the shell 1 in the horizontal direction, and a moving seat 19 is slidably connected to each slide bar 18, and at least one ultrasonic transducer 20 is installed on each moving seat 19; the ultrasonic generator 15 is connected to the ultrasonic transducer 20 through a transmission cable (not shown in the figure), and the radiating surface 20 of the ultrasonic transducer is facing the heat exchange pipe assembly; the driving mechanism 14 is used to drive the moving seat 19 to move back and forth horizontally along the slide bar 18, driving the ultrasonic transducer 20 to move back and forth horizontally. Among them, the ultrasonic generator can generate ultrasonic waves of different frequencies and powers, and the frequency and power of the ultrasonic waves can be adjusted according to actual use requirements. In this embodiment, a total of four slide bars 18 are provided, and the four slide bars are evenly distributed on the inner wall of the shell 1, and each slide bar 18 is slidably connected to each moving seat 19, and an ultrasonic transducer 20 is installed on the moving seat 19, thereby realizing that the ultrasonic generator 15 cooperates with the ultrasonic transducer 20 to emit ultrasonic waves to fully cover the heat exchange pipe assembly.

[0030] When the inner wall of the first heat exchange pipe 16 or the second heat exchange pipe 17 needs to be descaled, after the ultrasonic generator 15 is turned on to generate ultrasonic waves, the ultrasonic waves will be transmitted to the first heat exchange pipe 16 and the second heat exchange pipe 17 on the radiation surface of the ultrasonic transducer 20 through the ultrasonic transmission cable 21. The ultrasonic waves will cause bubbles to be generated in the fluid in the first heat exchange pipe 16 and the second heat exchange pipe 17. The shock waves generated by the bubbles will effectively impact and break the scale layer and impurities on the inner wall of the first heat exchange pipe 16 and the second heat exchange pipe 17, thereby achieving the descaling of the inner wall of the first heat exchange pipe 16 and the second heat exchange pipe 17, preventing the accumulation of scale layers and impurities from corroding and damaging the pipes, which helps to improve the heat exchange efficiency of the heat exchanger, reduce energy consumption, improve the operating efficiency of the entire heat exchanger and extend the service life of the heat exchanger.

[0031] The hot fluid inlet pipe 2 and the cold fluid inlet pipe 3 can be detachably mounted with a filter 8, and the filter 8 is filled with an activated carbon layer (not shown in the figure). Through the filtering effect of the filter 8, large particles of impurities in the incoming fluid can be removed, and these impurities are prevented from entering the first heat exchange pipe 16 and the second heat exchange pipe 17 to accumulate and form a scale layer, which can effectively slow down the accumulation speed of the scale layer in the first heat exchange pipe 16 and the second heat exchange pipe 17. The activated carbon layer has a strong adsorption capacity and can adsorb some impurities and odors in the fluid.

[0032] A flow meter (not shown in the figure) for detecting the fluid flow is provided in the hot fluid outlet pipe 4 and the cold fluid outlet pipe 3. By detecting the change of the fluid outflow flow rate of the hot fluid outlet pipe 4 and the cold fluid outlet pipe 3, when the outflow flow rate is low, the filter 8 can be replaced or descaled by checking whether the filter 8 is partially blocked or whether the inner wall of the first heat exchange pipe 16 and the second heat exchange pipe 17 has too much scale accumulated, resulting in a decrease in the fluid flow rate.

[0033] The first heat exchange pipe 16 and the second heat exchange pipe 17 are evenly distributed in the shell 1. The even distribution of the pipes in the shell 1 ensures that the fluid can evenly exchange heat when flowing through these pipes. This can avoid overheating or overcooling in certain areas, thereby improving the heat exchange efficiency of the entire system. At the same time, a number of fins 9 are provided between the adjacent first heat exchange pipes 16 and second heat exchange pipes 17. The addition of fins 9 greatly increases the contact area between the fluid and the pipe, thereby improving the efficiency of heat exchange. When the ultrasonic generator 15 is used in conjunction with the ultrasonic transducer 20 to emit ultrasonic waves, the ultrasonic waves can shake off the dust attached to the fins 9, thereby preventing dust from being blocked between the fins 9 and affecting the heat dissipation of the fins 9.

[0034] The first heat exchange pipe 16 and the second heat exchange pipe 17 are connected with the hot fluid inlet pipe 2, the cold fluid inlet pipe 3, the hot fluid outlet pipe 4 and the cold fluid outlet pipe 5, respectively, and are provided with sealing rubber rings (not shown in the figure) to ensure the sealing of the pipe connection. The hot fluid inlet pipe 2, the cold fluid inlet pipe 3, the hot fluid outlet pipe 4 and the cold fluid outlet pipe 5 are provided with electromagnetic valves (not shown in the figure), and the fluid inflow flow of each pipe is controlled by controlling the opening and closing degree of the electromagnetic valves.

[0035] A support mechanism 10 is provided at the bottom of the housing 1, and the support mechanism 10 includes a plurality of support brackets 101 fixed to the outer wall of the housing 1, and a shock-absorbing pad is provided between the contact surface of the support bracket 101 and the outer wall of the housing. The shock-absorbing pad is used to reduce the vibration amplitude of the housing 1 when it is affected by the outside world or vibrates due to ultrasonic descaling, so as to avoid damage to the internal components.

[0036] In this embodiment, the contact surface between the support bracket 101 and the outer wall of the shell 1 is adapted to the shape of the outer wall of the shell 1 .

[0037] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An integrated tubular heat exchanger, comprising a shell, on which a hot fluid inlet pipe, a cold fluid inlet pipe and corresponding hot fluid outlet pipes and cold fluid outlet pipes are provided, characterized in that: A heat exchange pipe assembly, a driving mechanism and an ultrasonic generator are arranged in the shell; the heat exchange pipe assembly includes a plurality of groups of first heat exchange pipes and second heat exchange pipes; both ends of the first heat exchange pipe are respectively connected to the hot fluid inlet pipe and the hot fluid outlet pipe, and both ends of the second heat exchange pipe are respectively connected to the cold fluid inlet pipe and the cold fluid outlet pipe; The hot fluid inlet pipe and the cold fluid inlet pipe are both provided with a dosing pipe, and the dosing pipe is provided with a regulating valve; the inner wall of the shell is provided with at least one sliding rod in the horizontal direction, and the sliding rod is slidably connected to a moving seat, and at least one ultrasonic transducer is installed on the moving seat; the ultrasonic generator is connected to the ultrasonic transducer through a transmission cable, and the radiation surface of the ultrasonic transducer is facing the heat exchange pipe assembly; the driving mechanism is used to drive the moving seat to move reciprocatingly horizontally along the sliding rod, thereby driving the ultrasonic transducer to move reciprocatingly horizontally.

2. The integrated tubular heat exchanger according to claim 1, characterized in that: The shell includes a cylinder and a first cylinder cover and a second cylinder cover detachably mounted at both ends of the cylinder. The hot fluid inlet pipe and the cold fluid outlet pipe are arranged on the first cylinder cover, and the hot fluid outlet pipe and the cold fluid inlet pipe are arranged on the second cylinder cover.

3. The integrated tubular heat exchanger according to claim 1, characterized in that: The pipe openings of the hot fluid inlet pipe and the cold fluid inlet pipe are both detachably mounted with filter screens, and the interior of the filter screens is filled with an activated carbon layer.

4. The integrated tubular heat exchanger according to claim 1, characterized in that: A flow meter for detecting fluid flow is arranged in each of the hot fluid outlet pipe and the cold fluid outlet pipe.

5. The integrated tubular heat exchanger according to claim 1, characterized in that: The dosing pipe is connected to a dosing pump, and the dosing pump is connected to a liquid storage tank filled with descaling cleaning liquid.

6. The integrated tubular heat exchanger according to claim 1, characterized in that: The ultrasonic generator can generate ultrasonic waves of different frequencies and powers.

7. The integrated tubular heat exchanger according to claim 1, characterized in that: A plurality of fins are provided between the adjacent first heat exchange pipes and second heat exchange pipes.

8. The integrated tubular heat exchanger according to claim 1, characterized in that: The first heat exchange pipe and the second heat exchange pipe are evenly distributed in the shell, and sealing rubber rings are provided at the connections between the first heat exchange pipe and the second heat exchange pipe and the hot fluid inlet pipe, the cold fluid inlet pipe, the hot fluid outlet pipe and the cold fluid outlet pipe.

9. The integrated tubular heat exchanger according to claim 1, characterized in that: The hot fluid inlet pipe, the cold fluid inlet pipe, the hot fluid outlet pipe and the cold fluid outlet pipe are all provided with solenoid valves.

10. The integrated tubular heat exchanger according to claim 1, characterized in that: A supporting mechanism is arranged at the bottom of the shell, and the supporting mechanism comprises a plurality of supporting brackets fixedly connected to the outer wall of the shell, and a shock-absorbing pad is arranged between the contact surface of the supporting bracket and the outer wall of the shell.

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