Online cleaning device for heat exchanger of waste heat power generation equipment

Abstract

The utility model discloses a heat exchanger on-line cleaning device of waste heat power generation equipment, which relates to the technical field of heat exchanger cleaning and comprises a heat exchanger body, a first cleaning mechanism and a second cleaning mechanism are arranged in the heat exchanger body, and the first cleaning mechanism is composed of a plurality of groups of on-line cleaning plates. The online cleaning plate moves on the outer wall of the U-shaped pipe through the through hole, the arrangement position of the second cleaning mechanism is matched with the position of the bent section of the U-shaped pipe, the second cleaning mechanism comprises a scrubbing assembly and a cleaning motor, a locking mechanism is arranged at the top of the heat exchanger body, and a backflushing reset mechanism is arranged on the outer wall of the heat exchanger body. The on-line cleaning plate can be pushed in the movement process of high-temperature fluid of the heat exchanger body, the on-line cleaning plate moves on the outer wall of the U-shaped pipe through the through holes, impurities deposited on the outer wall of the U-shaped pipe are scraped away, and a scrubbing assembly of the second cleaning mechanism can scrub the bent section of the U-shaped pipe.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger cleaning technology, and in particular to an online cleaning device for heat exchangers in waste heat power generation equipment. Background Technology

[0002] The heat exchanger is a key component in waste heat power generation equipment, used to recover waste heat generated in industrial processes and convert it into electrical energy. The performance of the heat exchanger directly affects the efficiency of the entire system.

[0003] During heat exchanger operation, a high-temperature fluid flows between the outer shell and the U-tube, while a low-temperature working fluid flows inside the U-tube. The waste heat from the high-temperature fluid is then transferred to the low-temperature working fluid, heating it. However, the high-temperature fluid often contains impurities. Over time, these impurities accumulate on the outer wall of the U-tube, affecting its heat exchange efficiency if not cleaned promptly. Currently, cleaning the U-tube in existing heat exchangers often requires disassembling the tube for cleaning, which is time-consuming and labor-intensive. Therefore, this invention proposes an online cleaning device for heat exchangers in waste heat power generation equipment to address the shortcomings of existing technologies. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide an online cleaning device for the heat exchanger of a waste heat power generation equipment. The online cleaning plate can be pushed during the high-temperature fluid movement of the heat exchanger body. The online cleaning plate moves on the outer wall of the U-shaped tube through the through hole to scrape off the impurities deposited on the outer wall of the U-shaped tube. The brushing component of the second cleaning mechanism can brush the curved section of the U-shaped tube to remove the impurities deposited on the outer wall of the U-shaped tube.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An online cleaning device for a waste heat power generation equipment heat exchanger includes a heat exchanger body. The heat exchanger body contains a first cleaning mechanism and a second cleaning mechanism. The first cleaning mechanism consists of multiple sets of online cleaning plates, which are respectively disposed between adjacent baffles inside the heat exchanger body. Each set of online cleaning plates has through holes adapted to the diameter of a U-shaped tube inside the heat exchanger body. The online cleaning plates move along the outer wall of the U-shaped tube through these through holes. The second cleaning mechanism is positioned to match the bend of the U-shaped tube. The second cleaning mechanism includes a brushing assembly and a cleaning motor. The cleaning motor is located on the outer wall of the heat exchanger body, and the brushing assembly is driven by the cleaning motor.

[0007] The top of the heat exchanger body is provided with a locking mechanism, the number of which is adapted to the number of online cleaning plates. The outer wall of the heat exchanger body is provided with a backflush reset mechanism, which is connected to the interior of the heat exchanger body.

[0008] A further improvement is that the online cleaning plate is provided with a high-temperature fluid channel, the position of which is adapted to the position of the flow channel formed between the baffle and the heat exchanger body.

[0009] A further improvement is that the locking mechanism includes a sealing shell, a cylinder, and a locking block. The sealing shell is installed on the top of the heat exchanger body, and a cylinder is provided inside the sealing shell. A locking block is provided at the output end of the cylinder, and a locking groove adapted to the locking block is provided on the top of the online cleaning plate.

[0010] A further improvement is that the brushing assembly includes a rotating shaft, support arms, and cleaning brush rods. The rotating shaft is located at the center of the curved section of the U-shaped tube. The rotating shaft is rotatably installed on the inner wall of the heat exchanger body. The rotating shaft is driven by a cleaning motor. Support arms are located at both ends of the rotating shaft. A cleaning brush rod is located between two sets of support arms. There are multiple sets of cleaning brush rods, and each set of cleaning brush rods contacts the outer wall of the U-shaped tube.

[0011] A further improvement is that the backflush reset mechanism includes a backflush pipe, a first connecting pipe, and a second connecting pipe. The outer wall of the heat exchanger body is provided with a first connecting pipe, and multiple sets of the first connecting pipe are provided. Each set of the first connecting pipes has a second connecting pipe at one end. The heat exchanger body is provided with a backflush pipe that is adapted to the position of the first connecting pipe, and the backflush pipe is connected to the first connecting pipe.

[0012] A further improvement is that a valve is provided on the second connecting pipe.

[0013] A further improvement is that a conical sleeve is provided inside the shell of the heat exchanger body.

[0014] The beneficial effects of this utility model are as follows: This utility model sets a first cleaning mechanism and a second cleaning mechanism inside the heat exchanger body. The multiple sets of online cleaning plates of the first cleaning mechanism can push the online cleaning plates during the high-temperature fluid movement in the heat exchanger body. The online cleaning plates move on the outer wall of the U-shaped tube through the through holes to scrape off the impurities deposited on the outer wall of the U-shaped tube. The brushing component of the second cleaning mechanism can brush the curved section of the U-shaped tube to remove the impurities deposited on the outer wall of the U-shaped tube. The first cleaning mechanism and the second cleaning mechanism work together to achieve efficient online cleaning of the U-shaped tube. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall assembly structure of the online cleaning device and the heat exchanger body of this utility model;

[0016] Figure 2 This is a front view schematic diagram of the internal online cleaning device of the heat exchanger body of this utility model;

[0017] Figure 3 This is a three-dimensional schematic diagram of the brushing component structure of this utility model;

[0018] Figure 4 This is a three-dimensional schematic diagram of the recoil reset mechanism of this utility model.

[0019] The components include: 1. Heat exchanger body; 101. Baffle; 102. U-tube; 2. Online cleaning plate; 3. Brushing assembly; 301. Rotating shaft; 302. Support arm; 303. Cleaning brush rod; 4. Cleaning motor; 5. Locking mechanism; 501. Sealing shell; 502. Cylinder; 503. Locking block; 6. Backflush reset mechanism; 601. Backflush pipe; 602. First connecting pipe; 603. Second connecting pipe; 604. Valve; 7. High-temperature fluid channel; 8. Locking groove; 9. Conical sleeve. Detailed Implementation

[0020] To deepen the understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments. The embodiments are only used to explain the present utility model and do not constitute a limitation on the protection scope of the present utility model.

[0021] Example 1

[0022] according to Figure 1-4 As shown, this embodiment proposes an online cleaning device for the heat exchanger of a waste heat power generation equipment, including a heat exchanger body 1. The heat exchanger body 1 is provided with a first cleaning mechanism and a second cleaning mechanism. The first cleaning mechanism consists of multiple sets of online cleaning plates 2, which are respectively arranged between adjacent baffles 101 inside the heat exchanger body 1. The multiple sets of online cleaning plates 2 are provided with through holes adapted to the diameter of the U-shaped tube 102 inside the heat exchanger body 1. The online cleaning plates 2 move on the outer wall of the U-shaped tube 102 through the through holes. The second cleaning mechanism is positioned to match the bending section of the U-shaped tube 102. The second cleaning mechanism includes a brushing component 3 and a cleaning motor 4. The cleaning motor 4 is provided on the outer wall of the heat exchanger body 1, and the brushing component 3 is driven by the cleaning motor 4. The top of the heat exchanger body 1 is provided with a locking mechanism 5, the number of which is adapted to the number of online cleaning plates 2. The outer wall of the heat exchanger body 1 is provided with a backflush reset mechanism 6, which is connected to the interior of the heat exchanger body 1.

[0023] When the online cleaning device for the heat exchanger of the waste heat power generation equipment of this utility model is running, the online cleaning plate 2 is fixed by the locking mechanism 5, so that the online cleaning plate 2 can move on the outer wall of the U-shaped tube 102 through the through hole. When the high temperature fluid enters the heat exchanger body 1, the high temperature fluid will impact the online cleaning plate 2, causing the online cleaning plate 2 to move. During the movement, the impurities deposited on the outer wall of the U-shaped tube 102 can be scraped off. Then, the cleaning motor 4 is started to control the operation of the brushing component 3, so that the brushing component 3 brushes the outer wall of the curved section of the U-shaped tube 102.

[0024] The online cleaning plate 2 is equipped with a high-temperature fluid channel 7, the position of which is adapted to the flow channel formed between the baffle 101 and the heat exchanger body 1. When the online cleaning plate 2 is not cleaning, the high-temperature fluid channel 7 allows high-temperature fluid to pass through, thereby enabling the heat exchanger body 1 to operate normally.

[0025] The locking mechanism 5 includes a sealing shell 501, a cylinder 502, and a locking block 503. The sealing shell 501 is installed on the top of the heat exchanger body 1. The cylinder 502 is located inside the sealing shell 501, and the locking block 503 is located at the output end of the cylinder 502. The top of the online cleaning plate 2 is provided with a locking groove 8 that matches the locking block 503. When the locking mechanism 5 controls the fixed state of the online cleaning plate 2, when the online cleaning plate 2 needs to clean the U-shaped tube 102, the locking block 503 is disengaged from the locking groove 8 by controlling the retraction of the output end of the cylinder 502. At this time, the online cleaning plate 2 can move along the straight section of the U-shaped tube 102 through the through hole. When the online cleaning plate 2 is fixed by the locking mechanism 5, the back-reset mechanism 6 back-resets the online cleaning plate 2 to a fixed position (in this utility model, the online cleaning plate 2 is set on one side of the baffle 101, and when the back-reset mechanism 6 resets the online cleaning plate 2, the baffle 101 can reset and position the online cleaning plate 2), and then the output end of the cylinder 502 extends to allow the locking block 503 to be inserted into the locking groove 8 to achieve locking.

[0026] The scrubbing assembly 3 includes a rotating shaft 301, support arms 302, and cleaning brush rods 303. The rotating shaft 301 is located at the center of the curved section of the U-shaped tube 102. The rotating shaft 301 is rotatably mounted to the inner wall of the heat exchanger body 1. The rotating shaft 301 is driven by a cleaning motor 4. Support arms 302 are located at both ends of the rotating shaft 301. Cleaning brush rods 303 are located between two sets of support arms 302. There are multiple sets of cleaning brush rods 303, and each set of cleaning brush rods 303 contacts the outer wall of the U-shaped tube 102. By starting the cleaning motor 4, the rotating shaft 301 rotates, and then the multiple sets of cleaning brush rods 303 on the support arms 302 simultaneously scrub the outer walls of the curved sections of multiple U-shaped tubes 102.

[0027] The backflush reset mechanism 6 includes a backflush pipe 601, a first connecting pipe 602, and a second connecting pipe 603. The outer wall of the heat exchanger body 1 is provided with the first connecting pipe 602, which is provided in multiple sets. Each set of the first connecting pipe 602 has a second connecting pipe 603 at one end. Inside the heat exchanger body 1, there is a backflush pipe 601 that matches the position of the first connecting pipe 602. The backflush pipe 601 is connected to the first connecting pipe 602. A valve 604 is provided on the second connecting pipe 603. When the backflush reset mechanism 6 controls the online cleaning plate 2 to reset, an external high-pressure water source is connected, allowing the high-pressure water to pass through the second connecting pipe 603 and the first connecting pipe 602 before entering the backflush pipe 601. Water then exits from the backflush pipe 601 to backflush the online cleaning plate 2, causing it to move and reset.

[0028] This invention features a first cleaning mechanism and a second cleaning mechanism inside the heat exchanger body 1. The first cleaning mechanism has multiple sets of online cleaning plates 2 that can be pushed by the high-temperature fluid movement in the heat exchanger body 1. The online cleaning plates 2 move on the outer wall of the U-shaped tube 102 through through holes, thereby scraping off the impurities deposited on the outer wall of the U-shaped tube 102. The second cleaning mechanism has a brushing component 3 that can brush the curved section of the U-shaped tube 102, thereby removing the impurities deposited on the outer wall of the U-shaped tube 102. The first and second cleaning mechanisms work together to achieve efficient online cleaning of the U-shaped tube 102.

[0029] Example 2

[0030] according to Figure 1-4 As shown, this embodiment proposes an online cleaning device for the heat exchanger of a waste heat power generation equipment, including a heat exchanger body 1. The heat exchanger body 1 is provided with a first cleaning mechanism and a second cleaning mechanism. The first cleaning mechanism consists of multiple sets of online cleaning plates 2. The multiple sets of online cleaning plates 2 are respectively arranged between adjacent baffles 101 inside the heat exchanger body 1, and the multiple sets of online cleaning plates 2 are provided with through holes adapted to the diameter of the U-shaped tube 102 inside the heat exchanger body 1. The online cleaning plates 2 move on the outer wall of the U-shaped tube 102 through the through holes. The second cleaning mechanism is positioned to match the bending section of the U-shaped tube 102. The second cleaning mechanism includes a brushing component 3 and a cleaning motor 4. The cleaning motor 4 is provided on the outer wall of the heat exchanger body 1, and the brushing component 3 is driven by the cleaning motor 4.

[0031] The heat exchanger body 1 is provided with a locking mechanism 5 at its top. The number of locking mechanisms 5 is adapted to the number of online cleaning plates 2. The heat exchanger body 1 is provided with a backflush reset mechanism 6 on its outer wall. The backflush reset mechanism 6 is connected to the interior of the heat exchanger body 1.

[0032] The heat exchanger body 1 has a conical sleeve 9 inside its shell. The slope of the conical sleeve 9 of this invention faces the high-temperature fluid outlet of the heat exchanger body 1, so that impurities during the cleaning process can be discharged along the slope of the conical sleeve 9.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An online cleaning device for a heat exchanger of a waste heat power generation equipment, comprising a heat exchanger body (1), characterized in that: The heat exchanger body (1) is provided with a first cleaning mechanism and a second cleaning mechanism. The first cleaning mechanism consists of multiple sets of online cleaning plates (2). The multiple sets of online cleaning plates (2) are respectively arranged between adjacent baffles (101) inside the heat exchanger body (1). The multiple sets of online cleaning plates (2) are provided with through holes that are adapted to the diameter of the U-shaped tube (102) inside the heat exchanger body (1). The online cleaning plates (2) move on the outer wall of the U-shaped tube (102) through the through holes. The second cleaning mechanism is set at a position adapted to the bending section of the U-shaped tube (102). The second cleaning mechanism includes a brushing component (3) and a cleaning motor (4). The cleaning motor (4) is provided on the outer wall of the heat exchanger body (1). The brushing component (3) is driven by the cleaning motor (4). The heat exchanger body (1) is provided with a locking mechanism (5) at the top. The number of locking mechanisms (5) is adapted to the number of online cleaning plates (2). The heat exchanger body (1) is provided with a backflush reset mechanism (6) on the outer wall. The backflush reset mechanism (6) is connected to the interior of the heat exchanger body (1).

2. The online cleaning device for the heat exchanger of a waste heat power generation equipment according to claim 1, characterized in that: The online cleaning plate (2) is provided with a high-temperature fluid channel (7), and the position of the high-temperature fluid channel (7) is adapted to the position of the flow channel formed between the baffle (101) and the heat exchanger body (1).

3. The online cleaning device for the heat exchanger of a waste heat power generation equipment according to claim 1, characterized in that: The locking mechanism (5) includes a sealing shell (501), a cylinder (502) and a locking block (503). The sealing shell (501) is installed on the top of the heat exchanger body (1). The cylinder (502) is provided inside the sealing shell (501). The locking block (503) is provided at the output end of the cylinder (502). The locking groove (8) adapted to the locking block (503) is provided on the top of the online cleaning plate (2).

4. The online cleaning device for the heat exchanger of a waste heat power generation equipment according to claim 1, characterized in that: The brushing assembly (3) includes a rotating shaft (301), support arms (302), and cleaning brush rods (303). The rotating shaft (301) is located at the center of the curved section of the U-shaped tube (102). The rotating shaft (301) is rotatably installed on the inner wall of the heat exchanger body (1). The rotating shaft (301) is driven by a cleaning motor (4). Support arms (302) are located at both ends of the rotating shaft (301). A cleaning brush rod (303) is located between two sets of support arms (302). There are multiple sets of cleaning brush rods (303), and the multiple sets of cleaning brush rods (303) are in contact with the outer wall of the U-shaped tube (102).

5. The online cleaning device for the heat exchanger of a waste heat power generation equipment according to claim 1, characterized in that: The backflush reset mechanism (6) includes a backflush pipe (601), a first connecting pipe (602), and a second connecting pipe (603). The outer wall of the heat exchanger body (1) is provided with a first connecting pipe (602). Multiple sets of the first connecting pipe (602) are provided. One end of each set of the first connecting pipe (602) is provided with a second connecting pipe (603). The heat exchanger body (1) is provided with a backflush pipe (601) that is adapted to the position of the first connecting pipe (602). The backflush pipe (601) is connected to the first connecting pipe (602).

6. The online cleaning device for the heat exchanger of a waste heat power generation equipment according to claim 5, characterized in that: A valve (604) is provided on the second connecting pipe (603).

7. The online cleaning device for the heat exchanger of a waste heat power generation equipment according to claim 1, characterized in that: The heat exchanger body (1) has a conical sleeve (9) inside its shell.

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