Novel multi-flow heat exchanger with online shell pass cleaning function

Abstract

The utility model relates to the technical field of heat exchanger cleaning, and discloses a novel shell pass on-line cleaning multi-flow heat exchanger which comprises a heat exchanger shell, a blow-down valve is fixedly connected to the outer wall of the heat exchanger shell, a blow-down pipe is arranged at one end of the blow-down valve, and a water tank assembly is arranged at one end of the blow-down pipe. The novel shell pass online cleaning multi-flow heat exchanger is provided with the fixed water tank, the collecting box, the filter screen, the box cover, the transparent plate, the liquid inlet pipe, the water pump, the liquid pumping pipe, the conveying pipe, the confluence pipe and the flow dividing pipe, and when the interior of the heat exchanger shell is cleaned, sewage flows into the collecting box in the fixed water tank through the sewage discharging valve and the sewage discharging pipe; the filter screen in the collecting box can effectively filter dirt in sewage, the water pump works, the filtered cleaning liquid can be pumped and conveyed to the fan-shaped nozzle to be recycled, waste of the cleaning liquid is reduced, the cleaning cost is reduced, and the requirements of people are met.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger cleaning technology, specifically a novel multi-flow heat exchanger with online shell-side cleaning. Background Technology

[0002] In modern industrial production, heat exchangers, as an important heat exchange device, are widely used in many fields such as chemical, petroleum, pharmaceutical, and food industries. With the continuous development and progress of industrial technology, the performance requirements for heat exchangers are also getting higher and higher.

[0003] Spiral tube heat exchangers have advantages over ordinary shell and tube heat exchangers, including a wide applicable temperature range, adaptability to thermal shock, self-elimination of thermal stress, and high compactness. They can meet the heat exchange needs of multiple fluids simultaneously within a single device. After prolonged use, the interior of the heat exchanger generally needs to be cleaned.

[0004] The prior art patent document CN221944963U provides a novel shell-side online cleaning multi-strand wound tube heat exchanger. Through the set cleaning components, the mounting plate and nozzle can be rotated and moved by rotating the screw, which facilitates cleaning of different positions of the inner wall of the shell and the gaps between different heat exchange tubes, thereby improving the cleaning efficiency of the tube heat pipes and the inner wall of the shell.

[0005] The existing technology described above can clean the inner wall of the shell and the walls of the heat exchange tubes, but the wastewater is discharged directly after cleaning and cannot be recycled, resulting in high cleaning costs. Furthermore, when the nozzle is damaged, the nozzle replacement operation is cumbersome and cannot meet people's needs. Therefore, we need a new type of multi-flow heat exchanger with online shell-side cleaning. Utility Model Content

[0006] The purpose of this invention is to provide a novel multi-flow heat exchanger with online shell-side cleaning to solve the problems mentioned in the background art.

[0007] To solve the above technical problems, this utility model provides the following technical solution: a novel multi-flow heat exchanger with online shell-side cleaning, including a heat exchanger shell, a drain valve fixedly connected to the outer wall of the heat exchanger shell, a drain pipe provided at one end of the drain valve, a water tank assembly provided at one end of the drain pipe, and a nozzle assembly provided on the inner wall of the heat exchanger shell.

[0008] The water tank assembly includes a fixed water tank, and a collection box is slidably connected to the inner wall of the fixed water tank. A filter screen is fixedly connected to the inner wall of the collection box, and a tank cover is detachably connected to the top of the fixed water tank. A transparent plate is fixedly connected to the inner wall of the tank cover. An inlet pipe is fixedly connected to one side of the fixed water tank, and a water pump is installed on the top of the fixed water tank. A suction pipe is provided at one end of the water pump, and a delivery pipe is provided at the other end of the water pump. A merging pipe is provided at one end of the delivery pipe, and a diversion pipe is provided on the outer wall of the merging pipe.

[0009] The nozzle assembly includes a mounting groove, and an outer shell is detachably connected to the inner wall of the mounting groove. The outer wall of the outer shell is provided with fixing bolts, and a sealing groove is provided on the inner wall of the outer shell. A sealing ring is provided on the inner wall of the sealing groove, and a fan-shaped nozzle is fixedly connected to the outer wall of the outer shell.

[0010] Preferably, the inner wall shape and size of the fixed water tank match the outer wall shape and size of the collection box, and the inner wall of the fixed water tank fits into the outer wall of the collection box.

[0011] Preferably, there are multiple diverter pipes, and the multiple diverter pipes are arranged at equal intervals on the confluence pipe.

[0012] Preferably, there are multiple outer shells, and the multiple outer shells are symmetrically arranged at equal distances on the heat exchanger shell.

[0013] Preferably, the heat exchanger shell is fixed to the outer shell by fixing bolts, and one end of the fixing bolt is threaded through the outer shell and extends into the heat exchanger shell for connection.

[0014] Preferably, the outer casing has an internal channel, and the inner wall of the internal channel is threaded with a water pipe connector, and one end of the diverter extends into the water pipe connector for connection.

[0015] Preferably, the inner wall shape and size of the sealing groove match the outer wall shape and size of the sealing ring, and the inner wall of the sealing groove fits into the outer wall of the sealing ring.

[0016] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0017] First, this utility model is equipped with a fixed water tank, a collection box, a filter screen, a box cover, a transparent plate, an inlet pipe, a water pump, a suction pipe, a delivery pipe, a merging pipe, and a branch pipe. When cleaning the inside of the heat exchanger shell, the sewage flows into the collection box in the fixed water tank through the drain valve and drain pipe. The filter screen in the collection box can effectively filter the dirt in the sewage. By operating the water pump, the filtered cleaning liquid can be drawn and transported to the fan-shaped nozzle for recycling, reducing the waste of cleaning liquid, lowering cleaning costs, and meeting people's needs.

[0018] Secondly, this utility model is equipped with an installation groove, an outer shell, fixing bolts, a sealing groove, a sealing ring, and fan-shaped nozzles. The multiple fan-shaped nozzles arranged at equal intervals can provide a large spray angle, which can effectively clean the inside of the heat exchanger shell. When the fan-shaped nozzles are damaged or need to be replaced, the fixing bolts can be removed to take the outer shell out of the installation groove on the heat exchanger shell for inspection. The sealing ring is provided to enhance the sealing between the outer shell and the heat exchanger shell, preventing liquid leakage. The structure is simple and easy to use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the sewage pipe and fixed water tank structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the fixed water tank and collection box structure of this utility model;

[0022] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0023] The components include: 1. Heat exchanger shell; 2. Drain valve; 3. Drain pipe; 4. Water tank assembly; 401. Fixed water tank; 402. Collection box; 403. Filter screen; 404. Tank cover; 405. Transparent plate; 406. Liquid inlet pipe; 407. Water pump; 408. Liquid extraction pipe; 409. Delivery pipe; 410. Combination pipe; 411. Diversion pipe; 5. Nozzle assembly; 501. Mounting groove; 502. Outer shell; 503. Fixing bolt; 504. Sealing groove; 505. Sealing ring; 506. Fan-shaped nozzle. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figure 1-4As shown, a novel multi-flow heat exchanger with online shell-side cleaning includes a heat exchanger shell 1. A drain valve 2 is fixedly connected to the outer wall of the heat exchanger shell 1, and a drain pipe 3 is provided at one end of the drain valve 2. A water tank assembly 4 is provided at one end of the drain pipe 3. A nozzle assembly 5 is provided on the inner wall of the heat exchanger shell 1. The water tank assembly 4 includes a fixed water tank 401, and a collection box 402 is slidably connected to the inner wall of the fixed water tank 401. A filter screen 403 is fixedly connected to the inner wall of the collection box 402. A tank cover 404 is detachably connected to the top of the fixed water tank 401. A transparent plate 405 is fixedly connected to the inner wall of the tank cover 404. An inlet pipe is fixedly connected to one side of the fixed water tank 401. 406, and a water pump 407 is installed on the top of the fixed water tank 401. One end of the water pump 407 is provided with a liquid extraction pipe 408, and the other end of the water pump 407 is provided with a delivery pipe 409. One end of the delivery pipe 409 is provided with a confluence pipe 410, and the outer wall of the confluence pipe 410 is provided with a diverter pipe 411. The nozzle assembly 5 includes a mounting groove 501, and the inner wall of the mounting groove 501 is detachably connected to a housing 502. The outer wall of the housing 502 is provided with a fixing bolt 503, and the inner wall of the housing 502 is provided with a sealing groove 504. The inner wall of the sealing groove 504 is provided with a sealing ring 505, and the outer wall of the housing 502 is fixedly connected to a fan-shaped nozzle 506.

[0026] Through the above technical solution, when cleaning the inside of the heat exchanger shell 1, the sewage flows into the collection box 402 in the fixed water tank 401 through the drain valve 2 and the drain pipe 3. The filter screen 403 in the collection box 402 can effectively filter the dirt in the sewage. With the operation of the water pump 407, the filtered cleaning liquid can be drawn and transported to the fan-shaped nozzles 506 for recycling, reducing the waste of cleaning liquid, reducing cleaning costs, and meeting people's needs. The multiple fan-shaped nozzles 506 arranged at equal intervals can provide a large spray angle, which can effectively clean the inside of the heat exchanger shell 1. When the fan-shaped nozzles 506 are damaged or need to be replaced, the outer shell 502 can be removed from the mounting groove 501 on the heat exchanger shell 1 by removing the fixing bolts 503, and the fan-shaped nozzles 506 can be inspected. The sealing ring 505 is provided to enhance the sealing between the outer shell 502 and the heat exchanger shell 1, prevent liquid leakage, and the structure is simple and easy to use. One end of the drain pipe 3 is connected to the connector on the fixed water tank 401.

[0027] Specifically, the inner wall shape and size of the fixed water tank 401 match the outer wall shape and size of the collection box 402, and the inner wall of the fixed water tank 401 fits into the outer wall of the collection box 402.

[0028] The above technical solution strengthens the connection between the fixed water tank 401 and the collection box 402. The operator can see the collection of impurities in the collection box 402 through the transparent plate 405. When it is necessary to remove the collection box 402, the operator can remove the box cover 404 by unscrewing the bolts on the cover 404, and then remove the collection box 402 to process the collected impurities and clean the filter screen 403.

[0029] Specifically, there are multiple branch pipes 411, and the multiple branch pipes 411 are arranged at equal intervals on the confluence pipe 410.

[0030] Through the above technical solution, the number of diversion pipes 411 corresponds to the number of fan-shaped nozzles 506. The number of fan-shaped nozzles 506 can be increased or decreased according to the actual situation such as the length of the heat exchanger shell 1.

[0031] Specifically, there are multiple outer shells 502, and the multiple outer shells 502 are symmetrically arranged at equal distances on the heat exchanger shell 1.

[0032] Through the above technical solution, fan-shaped nozzles 506 are provided on multiple outer shells 502. Through multiple fan-shaped nozzles 506, the sprayed cleaning fluid can be evenly sprayed to various parts, avoiding cleaning dead corners and greatly improving the coverage and uniformity of cleaning. Whether it is the inner wall of the heat exchanger shell 1, the surface of the heat exchange tube, or the gaps between different heat exchange tubes, they can be thoroughly cleaned, ensuring that the dirt is rinsed off, thereby effectively restoring the heat exchange performance of the heat exchanger.

[0033] Specifically, the heat exchanger housing 1 is fixed to the outer shell 502 by fixing bolts 503, and one end of the fixing bolts 503 is threaded through the outer shell 502 and extends into the heat exchanger housing 1 for connection.

[0034] The above technical solution enhances the connection between the heat exchanger shell 1 and the fixing bolts 503 and the outer shell 502. The number of fixing bolts 503 is multiple, which can effectively fix the outer shell 502 in the mounting groove 501 of the heat exchanger shell 1, making it easy to install and disassemble.

[0035] Specifically, the outer casing 502 has an internal channel, and the inner wall of the internal channel is threaded with a water pipe connector. One end of the diversion pipe 411 extends into the water pipe connector for connection.

[0036] Through the above technical solution, the cleaning fluid in the diversion pipe 411 enters the internal channel and then enters the fan-shaped nozzle 506. The fan-shaped nozzle 506 sprays out the cleaning fluid to clean the inside of the heat exchanger shell 1.

[0037] Specifically, the inner wall shape and size of the sealing groove 504 match the outer wall shape and size of the sealing ring 505, and the inner wall of the sealing groove 504 fits into the outer wall of the sealing ring 505.

[0038] The above technical solution enhances the connection between the sealing groove 504 and the sealing ring 505, strengthens the sealing performance by providing the sealing ring 505, and enhances the sealing performance between the outer shell 502 and the heat exchanger shell 1, preventing liquid leakage.

[0039] In use, one end of the inlet pipe 406 is connected to a cleaning fluid source, controlled by a valve. The cleaning fluid enters the fixed water tank 401 through the inlet pipe 406. The water pump 407 operates, drawing the cleaning fluid from the fixed water tank 401 through the extraction pipe 408. The fluid is then transported to the confluence pipe 410 through the delivery pipe 409. The cleaning fluid flows through the confluence pipe 410 into the branch pipe 411, and then through the branch pipe 411 into the fan-shaped nozzles 506. The multiple fan-shaped nozzles 506, arranged at equal intervals, provide a large spray angle, effectively cleaning the inside of the heat exchanger shell 1. During the cleaning process, the cleaning fluid impacts the inner wall of the heat exchanger shell 1, the surface of the heat exchange tubes, and the gaps between different heat exchange tubes, washing away the dirt. The wastewater after cleaning is discharged through the drain valve. 2 and the sewage pipe 3 flow into the collection box 402 inside the fixed water tank 401. The filter screen 403 effectively filters dirt and impurities in the sewage. The filtered cleaning liquid flows into the space below the fixed water tank 401, is drawn by the liquid extraction pipe 408 of the water pump 407, and is transported back to the fan-shaped nozzle 506 for recycling, thereby reducing the waste of cleaning liquid and lowering the cleaning cost. When the fan-shaped nozzle 506 is damaged after long-term use and needs to be repaired or replaced, the equipment stops running. By removing the fixing bolts 503, the outer shell 502 is removed from the mounting groove 501 of the heat exchanger shell 1, and the fan-shaped nozzle 506 is repaired or replaced. This completes all the work. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel multi-flow heat exchanger with online shell-side cleaning, comprising a heat exchanger shell (1), characterized in that: A drain valve (2) is fixedly connected to the outer wall of the heat exchanger shell (1), and a drain pipe (3) is provided at one end of the drain valve (2). A water tank assembly (4) is provided at one end of the drain pipe (3), and a nozzle assembly (5) is provided on the inner wall of the heat exchanger shell (1). The water tank assembly (4) includes a fixed water tank (401), and a collection box (402) is slidably connected to the inner wall of the fixed water tank (401). A filter screen (403) is fixedly connected to the inner wall of the collection box (402). A tank cover (404) is detachably connected to the top of the fixed water tank (401). A transparent plate (405) is fixedly connected to the inner wall of the tank cover (404). An inlet pipe (406) is fixedly connected to one side of the fixed water tank (401). A water pump (407) is installed on the top of the fixed water tank (401). A suction pipe (408) is provided at one end of the water pump (407). A delivery pipe (409) is provided at the other end of the water pump (407). A merging pipe (410) is provided at one end of the delivery pipe (409). A diversion pipe (411) is provided on the outer wall of the merging pipe (410). The nozzle assembly (5) includes a mounting groove (501), and the inner wall of the mounting groove (501) is detachably connected to a housing (502). The outer wall of the housing (502) is provided with fixing bolts (503), and the inner wall of the housing (502) is provided with a sealing groove (504). The inner wall of the sealing groove (504) is provided with a sealing ring (505), and the outer wall of the housing (502) is fixedly connected to a fan-shaped nozzle (506).

2. A novel multi-flow heat exchanger with online shell-side cleaning according to claim 1, characterized in that: The inner wall shape and size of the fixed water tank (401) match the outer wall shape and size of the collection box (402), and the inner wall of the fixed water tank (401) fits against the outer wall of the collection box (402).

3. A novel multi-flow heat exchanger with online shell-side cleaning according to claim 1, characterized in that: The number of the diverter pipes (411) is multiple, and the multiple diverter pipes (411) are arranged at equal intervals on the confluence pipe (410).

4. A novel multi-flow heat exchanger with online shell-side cleaning according to claim 1, characterized in that: The number of the outer shell (502) is multiple, and the multiple outer shells (502) are symmetrically arranged at equal distances on the heat exchanger shell (1).

5. A novel multi-flow heat exchanger with online shell-side cleaning according to claim 1, characterized in that: The heat exchanger shell (1) is fixed to the outer shell (502) by fixing bolts (503), and one end of the fixing bolt (503) is threaded through the outer shell (502) and extends into the heat exchanger shell (1) for connection.

6. A novel multi-flow heat exchanger with online shell-side cleaning according to claim 1, characterized in that: The outer casing (502) has an internal channel, and the inner wall of the internal channel is threaded with a water pipe connector. One end of the diversion pipe (411) extends into the water pipe connector for connection.

7. A novel multi-flow heat exchanger with online shell-side cleaning according to claim 1, characterized in that: The inner wall shape and size of the sealing groove (504) match the outer wall shape and size of the sealing ring (505), and the inner wall of the sealing groove (504) fits against the outer wall of the sealing ring (505).

Images