Fixed tube sheet heat exchanger with tube bundle lumen cleaning device

Abstract

The utility model relates to fixed tube sheet heat exchanger technical field, especially for a kind of fixed tube sheet heat exchanger with tube bundle inner cavity cleaning device, including base, the top of base is fixedly installed with support, the middle of support is fixedly installed with heat exchange component, the outer wall of heat exchange component is sequentially equipped with cold material outlet, hot material inlet, ultrasonic transducer, hot material outlet and cold material inlet from top to bottom, the right side of hot material inlet is equipped with hot material outlet, the right side of heat exchange component is equipped with flushing component, the right side of flushing component is equipped with control cabinet.The device can be through control cabinet electric control cold, hot material inlet and outlet solenoid valve switch, utilize ultrasonic transducer to carry out ultrasonic cleaning in shell, circulating pump is pumped into along input pipe in cleaning fluid in liquid storage tank, output from output pipe, after filtration, return to liquid storage tank and realize circulating cleaning, reduce internal incrustation, shorten downtime, reduce maintenance cost, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of fixed tube sheet heat exchangers, and specifically to a fixed tube sheet heat exchanger with a tube bundle cavity cleaning device. Background Technology

[0002] A fixed tube sheet heat exchanger is a shell-and-tube heat exchanger in which the two ends of a heat exchange tube bundle that runs through the shell are fixed to two tube sheets by welding or expansion. These two tube sheets are then directly connected to the shell by welding or flanges to form a rigid whole.

[0003] Chinese utility model patent CN210664068U discloses a fixed tube sheet heat exchanger, which includes "a heat exchanger shell, a tube sheet, a flexible tube sheet, a heat exchange tube bundle, a fluid inlet, and a fluid outlet; the heat exchanger shell is provided with a fluid inlet and a fluid outlet; the heat exchanger shell is provided with a heat exchange tube bundle, and the tube sheet is used to fix the heat exchange tube bundle; the flexible tube sheet is used to connect the tube sheet and the heat exchanger shell, and the flexible tube sheet includes at least one arc segment, the center of the arc segment is outside the heat exchanger shell, and one end of the arc segment is connected to the heat exchanger shell." However, its internal cleaning is difficult, and once severe scaling occurs, downtime is long, increasing maintenance costs and reducing production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a fixed tube sheet heat exchanger with a tube bundle cavity cleaning device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fixed tube sheet heat exchanger with a tube bundle cavity cleaning device, comprising a base, a bracket fixedly installed on the top of the base, a heat exchange assembly fixedly installed in the middle of the bracket, and a cold material outlet, a hot material inlet, an ultrasonic transducer, a hot material outlet, and a cold material inlet arranged sequentially from top to bottom on the outer wall of the heat exchange assembly, a hot material outlet on the right side of the hot material inlet, a shower assembly on the right side of the heat exchange assembly, and a control cabinet on the right side of the shower assembly.

[0006] The shower assembly includes an output pipe. The left pipe interface of the output pipe is fixedly installed at the interface of the cold material inlet. The right pipe interface of the output pipe is fixedly connected and communicates with the liquid storage tank below through a filter box. The filter box has two filter boxes inserted into it. The liquid outlet of the liquid storage tank is fixedly connected and communicates with the liquid inlet of the circulation pump through a pipe. The liquid outlet of the circulation pump is fixedly installed with an input pipe.

[0007] The beneficial effects of this utility model are as follows: the device can electrically control the opening and closing of the electromagnetic valves for the inlet and outlet of cold and hot materials through the control cabinet, use an ultrasonic transducer to perform ultrasonic cleaning inside the housing, and a circulating pump pumps the cleaning liquid in the storage tank into the tank along the input pipe and outputs it from the output pipe. After filtration, it returns to the storage tank to achieve circulating cleaning, reduce internal scaling, shorten downtime, reduce maintenance costs, and improve production efficiency.

[0008] To change the direction of the fluid inside the shell and improve heating efficiency:

[0009] Further configured as follows: the heat exchange assembly includes a shell, the outer wall of the shell is fixedly installed in the middle of the bracket, the upper and lower ends of the outer wall of the shell are provided with sealing gaskets, and the upper and lower ends of the outer wall of the shell are connected to end caps through flanges, the upper and lower ends of the inner wall of the shell are fixedly installed with first tube sheets, the inner walls of the two first tube sheets are provided with multiple heating tube bundles, and the outer walls of the multiple heating tube bundles are provided with multiple sets of baffles from top to bottom.

[0010] By adopting the above technical solution, the fluid entering the hot material inlet flows evenly through the entire tube bundle area along the baffle, eliminating dead zones. The gap between the baffle and the shell is very small, effectively blocking short-circuit paths. At the same time, it forces the fluid to change direction, repeatedly and laterally scouring the heating tube bundle, effectively destroying the thermal boundary layer, significantly reducing thermal resistance, and improving heating efficiency.

[0011] To enable switching between cleaning and operation modes for both cold material outlet and hot material inlet:

[0012] The configuration is further defined as follows: the cold material outlet, the hot material inlet, and the hot material outlet and cold material inlet are all three-way solenoid valve pipelines.

[0013] By adopting the above technical solution, the control cabinet electrically controls the opening and closing of the three-way solenoid valves at the cold material outlet, hot material inlet, and the hot material outlet and cold material inlet, guiding the cleaning fluid to complete the overall cleaning of the equipment, reducing cleaning dead spots and improving cleaning efficiency.

[0014] To ensure a stable input of cleaning fluid via the input tube:

[0015] A further configuration is provided: an input tube is fixedly sleeved on the outer wall of the top ring of the base.

[0016] By adopting the above technical solution, the outer wall of the top ring of the base is provided with a hole whose inner wall size matches the outer wall size of the input pipe. The input pipe is fixedly installed on the base, and the base provides support for the input pipe, thereby providing stability for the input of cleaning fluid and improving cleaning efficiency.

[0017] To enable the control cabinet to control the ultrasonic transducer to perform ultrasonic cleaning inside the housing:

[0018] Further configuration: The control cabinet integrates a PLC controller, a display screen, multiple switches, and an ultrasonic generator.

[0019] By adopting the above technical solution, the control cabinet, which integrates a PLC controller, display screen, multiple switches and ultrasonic generator, is electrically connected to the ultrasonic transducer on the housing. This converts electrical energy into ultrasonic waves, which vibrate the housing and heating tube bundle, causing scale to fall off and improving cleaning convenience.

[0020] To achieve the goal of filtering impurities in the cleaning solution without affecting the cleaning process of both filter boxes:

[0021] The filter boxes are further configured such that the two filter boxes are arranged vertically, with a stainless steel filter screen inside the upper filter box and a filter bag being movably engaged inside the lower filter box.

[0022] By adopting the above technical solution, the turbid liquid after cleaning falls into the filter box through the output pipe. Large particles of impurities are first intercepted by the stainless steel filter screen in the upper filter box of the filter box, and then the impurities are further filtered by the filter bag in the lower filter box, so as to avoid impurities clogging the liquid storage tank pipe opening, thereby improving the liquid circulation efficiency and production efficiency.

[0023] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the main view of this utility model;

[0025] Figure 2 This is a front view schematic diagram of the present utility model;

[0026] Figure 3 This is a cross-sectional schematic diagram of the heat exchange component of this utility model;

[0027] Figure 4 This is a schematic diagram of the shower assembly of this utility model.

[0028] In the diagram: 1. Base; 2. Support; 3. Heat exchange assembly; 301. Shell; 302. Sealing gasket; 303. End cap; 304. First tube sheet; 305. Heating tube bundle; 4. Cold material outlet; 5. Hot material inlet; 6. Ultrasonic transducer; 7. Hot material outlet; 8. Cold material inlet; 9. Shower assembly; 901. Output pipe; 902. Filter box; 903. Filter housing; 904. Liquid storage tank; 905. Circulation pump; 906. Input pipe; 10. Control cabinet. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0030] Please see Figures 1 to 4 A fixed tube sheet heat exchanger with a tube bundle cavity cleaning device includes a base 1, a bracket 2 fixedly installed on the top of the base 1, a heat exchange assembly 3 fixedly installed in the middle of the bracket 2, and a cold material outlet 4, a hot material inlet 5, an ultrasonic transducer 6, a hot material outlet 7 and a cold material inlet 8 arranged sequentially from top to bottom on the outer wall of the heat exchange assembly 3. A hot material outlet 7 is provided on the right side of the hot material inlet 5, a shower assembly 9 is provided on the right side of the heat exchange assembly 3, and a control cabinet 10 is provided on the right side of the shower assembly 9.

[0031] The shower assembly 9 includes an output pipe 901. The left pipe interface of the output pipe 901 is fixedly installed at the interface of the cold material inlet 8. The right pipe interface of the output pipe 901 is fixedly connected and communicates with the liquid storage tank 904 below through the filter box 902. The filter box 902 has two filter boxes 903 that are movably inserted inside. The liquid outlet of the liquid storage tank 904 is fixedly connected and communicates with the liquid inlet of the circulation pump 905 through a pipe. The liquid outlet of the circulation pump 905 is fixedly installed with an input pipe 906.

[0032] In this embodiment, as Figure 1 and Figure 3 As shown, the heat exchange assembly 3 includes a housing 301. The outer wall of the housing 301 is fixedly installed in the middle of the bracket 2. Sealing gaskets 302 are provided at both the upper and lower ends of the outer wall of the housing 301. End caps 303 are connected to the upper and lower ends of the outer wall of the housing 301 through flanges. First tube sheets 304 are fixedly installed at both the upper and lower ends of the inner wall of the housing 301. Multiple heating tube bundles 305 are provided on the inner walls of the two first tube sheets 304. Multiple sets of baffles are provided on the outer walls of the multiple heating tube bundles 305 from top to bottom.

[0033] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, cold material outlet 4, hot material inlet 5, hot material outlet 7 and cold material inlet 8 are all three-way solenoid valve pipelines.

[0034] In this embodiment, as Figure 1 and Figure 2 As shown, an input tube 906 is fixedly sleeved on the outer wall of the top ring of the base 1.

[0035] In this embodiment, as Figure 1 and Figure 2 As shown, control cabinet 10 integrates a PLC controller, display screen, multiple switches and ultrasonic generator.

[0036] In this embodiment, as Figure 1 and Figure 2 As shown, the two filter boxes 903 are arranged vertically. The upper filter box 903 has a stainless steel filter screen inside, and the lower filter box 903 has a filter bag that is movably clipped inside.

[0037] The fixed tube sheet heat exchanger with a tube bundle internal cavity cleaning device operates as follows:

[0038] First, the operator uses the control cabinet 10, which integrates a PLC controller, display screen, multiple switches, and an ultrasonic generator, to electrically control the switching of the three-way solenoid valves on the cold material outlet 4, hot material inlet 5, hot material outlet 7, and cold material inlet 8. The hot material enters from the hot material inlet 5 on the left side of the housing 301, and the fluid flows evenly along the baffle throughout the entire heating tube bundle 305 area within the housing 301. The gap between the baffle and the housing 301 is very small, eliminating dead zones. The two first tube sheets 304 confine the fluid between the housing 301, the baffle, and the multiple heating tube bundles 305, effectively blocking short-circuit paths and forcing the fluid to change direction repeatedly and laterally. The walls of multiple heating tube bundles 305 are flushed, effectively disrupting the thermal boundary layer, significantly reducing thermal resistance, and improving heat transfer efficiency. Cold material enters through the cold material inlet 8 at the bottom of the lower end cap 303. The upper and lower end caps 303 are connected by flanges, and a sealing gasket 302 in the middle strengthens the internal sealing environment to prevent leakage. After being heated by heat transfer through the multiple heating tube bundles 305, the cold material is discharged from the cold material outlet 4 at the top of the upper end cap 303, while the hot material flows out from the hot material outlet 7 on the right side of the shell 301. After heat exchange is completed, the valve is adjusted using a three-way solenoid valve. The control cabinet 10 starts the ultrasonic transducer 6 on the shell 301 and the circulation pump 905 through electrical connection. The ultrasonic transducer 6 is a clamp... A clamp-type piezoelectric transducer converts electrical energy into ultrasonic waves, which vibrate the housing 301 and the heating tube bundle 305, causing scale to fall off and improving cleaning convenience. Simultaneously, the circulation pump 905 pumps the cleaning solution from the storage tank 904 through the pipeline. After being pressurized by the circulation pump 905, the solution enters the housing 301 and the upper end cap 303 through the input pipe 906 from the cold material outlet 4 and the hot material inlet 5. The cleaning solution entering from the cold material outlet 4, under the influence of gravity, flows sequentially through the upper end cap 303, through the upper first tube sheet 304, multiple heating tube bundles 305, and the lower end cap 303, before flowing into the output pipe 901 from the cold material inlet 8. The cleaning solution entering from the hot material inlet 5 flows along the baffle plate... The cleaning fluid flows evenly through the entire heating tube bundle 305 area within the housing 301, and then flows into the output pipe 901 through the hot material outlet 7. After cleaning, the turbid liquid falls into the filter box 902 through the output pipe 901. Large particles of impurities are first intercepted by the stainless steel filter screen in the upper filter box 903 within the filter box 902, and then further filtered by the non-woven filter bag in the lower filter box 903. This prevents impurities from clogging the pipe opening of the lower liquid storage tank 904, thereby improving the liquid circulation efficiency and production benefits. The cleaning fluid in the liquid storage tank 904 can be connected to external pipes through the inlet and outlet pipes provided on the right side of the outer wall. The inlet and outlet pipes are distributed vertically and are equipped with valves for easy periodic replacement.

[0039] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0040] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A fixed tube sheet heat exchanger with a tube bundle cavity cleaning device, comprising a base (1), characterized in that: A bracket (2) is fixedly installed on the top of the base (1), and a heat exchange component (3) is fixedly installed in the middle of the bracket (2). The outer wall of the heat exchange component (3) is provided with a cold material outlet (4), a hot material inlet (5), an ultrasonic transducer (6), a hot material outlet (7), and a cold material inlet (8) from top to bottom. A hot material outlet (7) is provided on the right side of the hot material inlet (5). A shower component (9) is provided on the right side of the heat exchange component (3). A control cabinet (10) is provided on the right side of the shower component (9). The shower assembly (9) includes an output pipe (901). The left pipe interface of the output pipe (901) is fixedly installed at the interface of the cold material inlet (8). The right pipe interface of the output pipe (901) is fixedly connected and communicates with the liquid storage tank (904) below through the filter box (902). The filter box (902) has two filter boxes (903) inserted into its interior. The outlet of the liquid storage tank (904) is fixedly connected and communicates with the inlet of the circulation pump (905) through a pipe. The outlet of the circulation pump (905) is fixedly installed with an input pipe (906).

2. A fixed tube sheet heat exchanger with a tube bundle cavity cleaning device as described in claim 1, characterized in that: The heat exchange assembly (3) includes a housing (301). The outer wall of the housing (301) is fixedly installed in the middle of the bracket (2). Both the upper and lower ends of the outer wall of the housing (301) are provided with sealing gaskets (302), and the upper and lower ends of the outer wall of the housing (301) are connected with end caps (303) through flanges. Both the upper and lower ends of the inner wall of the housing (301) are fixedly installed with first tube sheets (304). The inner walls of the two first tube sheets (304) are provided with multiple heating tube bundles (305), and the outer walls of the multiple heating tube bundles (305) are provided with multiple sets of baffles from top to bottom.

3. A fixed tube sheet heat exchanger with a tube bundle cavity cleaning device as described in claim 1, characterized in that: The cold material outlet (4), hot material inlet (5), hot material outlet (7) and cold material inlet (8) are all three-way solenoid valve pipelines.

4. A fixed tube sheet heat exchanger with a tube bundle cavity cleaning device as described in claim 1, characterized in that: An input tube (906) is fixedly sleeved on the outer wall of the top ring of the base (1).

5. A fixed tube sheet heat exchanger with a tube bundle cavity cleaning device as described in claim 1, characterized in that: The control cabinet (10) integrates a PLC controller, a display screen, multiple switches and an ultrasonic generator.

6. A fixed tube sheet heat exchanger with a tube bundle cavity cleaning device as described in claim 1, characterized in that: The two filter boxes (903) are arranged vertically, with a stainless steel filter screen inside the upper filter box (903) and a filter bag being movably attached inside the lower filter box (903).

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