Clean type double-tube-plate heat exchanger

Abstract

The utility model relates to the technical field of double-tube-plate heat exchangers, and discloses a clean type double-tube-plate heat exchanger which comprises a barrel A and a barrel B. A partition plate is fixedly installed in the barrel B, a liquid inlet pipe A is fixedly installed outside the barrel A, a liquid discharging pipe A is fixedly installed on the left side of the barrel A, and a liquid inlet pipe B is fixedly installed outside the barrel B. A liquid outlet pipe A is fixedly installed on the right side of the barrel B. A liquid discharging pipe B is fixedly installed outside the cylinder B, a cleaning mechanism is arranged inside the cylinder B, a sealing mechanism is arranged outside the cylinder A, a scraper blade is used for cleaning a filter screen, the filter screen and a mechanism connected with the filter screen can be cleaned and even replaced, an installation disc and a heat exchange pipe are detached, the installation disc and the heat exchange pipe are replaced in time, and the heat exchange efficiency is improved. And the barrel A and the barrel B are installed in a sealed mode through the fixing bolts, the sealing ring A and the sealing ring B, and the sealing safety performance of the double-tube-plate heat exchanger is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of double tube sheet heat exchangers, and particularly relates to a clean double tube sheet heat exchanger. Background Technique

[0002] As a heat exchange device, the double tube sheet heat exchanger is widely used in the fields of heat recovery and anti-corrosion in industry. The hot fluid and the cold fluid are transmitted in the shell and fully contact for heat exchange. In order to ensure the heat exchange efficiency, a clean double tube sheet heat exchanger is required.

[0003] According to the description in the double tube sheet heat exchanger disclosed on the patent network (the authorized announcement number is: CN 105547018 B), "The present invention relates to the technical field of heat exchange equipment, and particularly relates to a double tube sheet heat exchanger, including a shell; a plurality of heat exchange tubes are arranged inside the shell, and the axial directions of the plurality of heat exchange tubes are parallel to each other; both ends of the shell are provided with tube heads; a first tube sheet and a second tube sheet are sequentially arranged between the shell and the tube head, wherein the shell is fixedly connected with the first tube sheet, and the second tube sheet is fixedly connected with the tube head; a preset distance is arranged between the first tube sheet and the second tube sheet; a plurality of connecting tubes are connected between the first tube sheet and the second tube sheet; the number of the heat exchange tubes is equal to the number of the connecting tubes; the ends of the heat exchange tubes are arranged in the first tube sheet, the second tube sheet and the connecting tubes. The present invention improves the sealing safety performance of the heat exchanger, can timely detect the leakage of the seal of the first tube sheet or the leakage of the seal of the second tube sheet, and is convenient for maintenance."

[0004] In view of the above description, the applicant believes that the following problems exist:

[0005] During the use of this utility model, by replacing the threaded sealing method with the first tube sheet and the second tube sheet, the first tube sheet and the second tube sheet can select materials with higher strength, so that the heat exchanger can withstand higher pressures and temperatures, increasing the application range of the heat exchanger. However, in actual use, there are impurity particles in the hot fluid and cold fluid media. When heat exchange is carried out and the liquid undergoes a large temperature change, most of the impurity particles will adhere to the conductive tube sheet or the transmission pipe wall, which will make the transmission pipe wall between the two liquids thicker and affect the heat exchange effect. Therefore, it is necessary to improve a clean double tube sheet heat exchanger to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a clean double tube sheet heat exchanger to solve the problems raised in the above background technique.

[0007] To achieve the above object, the utility model provides the following technical solution: a clean double-tube-sheet heat exchanger, including cylinder A and cylinder B. A partition is fixedly installed inside cylinder B. A liquid inlet pipe A is fixedly installed outside cylinder A. A liquid discharge pipe A is fixedly installed on the left side of cylinder A. A liquid inlet pipe B is fixedly installed outside cylinder B. A liquid discharge pipe B is fixedly installed outside cylinder B. A cleaning mechanism is arranged inside cylinder B, and a sealing mechanism is arranged outside cylinder A.

[0008] The cleaning mechanism includes a disassembly component and two filtering components. The disassembly component is arranged inside cylinder B, and the two filtering components are respectively arranged inside liquid inlet pipe A and liquid inlet pipe B.

[0009] Preferably, the disassembly component includes two springs. Both springs are fixedly installed inside cylinder B. The end of the spring away from cylinder B is fixedly installed with a moving plate. A plug post is fixedly installed on the side of the moving plate away from the spring. An installation disc is slidably installed outside the plug post. A heat exchange tube is fixedly installed on the left side of the installation disc. A bundling band is arranged outside the heat exchange tube to bundle multiple heat exchange tubes to avoid shaking.

[0010] Preferably, both the heat exchange tube and the bundling band are arranged inside cylinder A. The left and right sides of the installation disc are respectively in contact with cylinder A and cylinder B. Through holes are opened at the corresponding positions of the installation disc and the heat exchange tube for liquid transportation.

[0011] Preferably, the filtering component includes four threaded rods. The four threaded rods are respectively rotatably installed inside liquid inlet pipe A and liquid inlet pipe B. A threaded sleeve is threadedly installed outside the threaded rod. A filter screen is arranged inside both liquid inlet pipe A and liquid inlet pipe B. A rotating shaft is rotatably installed inside the filter screen. Two impellers are fixedly installed outside the rotating shaft. A scraper is fixedly installed at the top of the rotating shaft to rotate and clean the filter screen to avoid blockage of the filter screen by impurities.

[0012] Preferably, the bottom of the scraper is in contact with the filter screen. A limiting block is fixedly installed outside the threaded sleeve. The threaded sleeve is slidably installed inside liquid inlet pipe A and liquid inlet pipe B, and the threaded sleeve is slidably installed inside the filter screen to install the filter screen.

[0013] Preferably, the sealing mechanism includes flange A. Flange A is fixedly installed outside cylinder A. Flange B is fixedly installed outside cylinder B. A sealing ring A is arranged outside flange A. A sealing ring B is arranged outside flange A. Two convex blocks are fixedly installed outside both sealing ring A and sealing ring B. A fixing bolt is threadedly installed inside the convex block to fix sealing ring A and sealing ring B.

[0014] Preferably, the sealing ring B is arranged outside the flange A and the sealing ring B is arranged outside the flange B for installing the flange A and the flange B.

[0015] Compared with the prior art, the utility model provides a clean double tube sheet heat exchanger, which has the following beneficial effects:

[0016] 1. In the clean double tube sheet heat exchanger, through the arranged cleaning mechanism, during use, impurities in the liquid are filtered out by the filter screen, the scraper rotates to clean the filter screen, preventing impurities from blocking the filter screen. The filter screen and its connected mechanism can be cleaned or even replaced. The mounting plate and the heat exchange tubes can be disassembled, and the inner walls of the cylinder A and the cylinder B can be cleaned, and the mounting plate and the heat exchange tubes can be replaced in time, so as not to affect the heat exchange efficiency and internal cleanliness of the overall device, improving the service life of the device and saving costs.

[0017] 2. In the clean double tube sheet heat exchanger, through the arranged sealing mechanism, during use, the flange A and the flange B are installed by the fixing bolts, the sealing ring A and the sealing ring B, so that the cylinder A and the cylinder B are hermetically installed, improving the sealing safety performance of the double tube sheet heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings:

[0019] Figure 1 It is a schematic diagram of the external structure of the present utility model;

[0020] Figure 2 It is a schematic diagram of the sectional structure of the present utility model;

[0021] Figure 3 It is a schematic diagram of the exploded structure of the mounting plate of the present utility model and its connected mechanism;

[0022] Figure 4 It is a schematic diagram of the sectional exploded structure of the liquid inlet pipe B of the present utility model and its connected mechanism;

[0023] Figure 5 It is a schematic diagram of the exploded structure of the sealing mechanism of the present utility model.

[0024] In the figure: 1. Cylinder A; 2. Cylinder B; 3. Partition board; 4. Liquid inlet pipe A; 5. Liquid discharge pipe A; 6. Liquid inlet pipe B; 7. Liquid discharge pipe B; 8. Cleaning mechanism; 81. Disassembly component; 811. Spring; 812. Moving plate; 813. Inserting column; 814. Installation plate; 815. Heat exchange pipe; 816. Band; 82. Filter component; 821. Threaded rod; 822. Threaded sleeve; 823. Filter net; 824. Rotating shaft; 825. Impeller; 826. Scraper; 9. Sealing mechanism; 91. Flange A; 92. Flange B; 93. Sealing ring A; 94. Sealing ring B; 95. Protrusion; 96. Fixed bolt. Detailed implementation mode

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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 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.

[0026] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0027] Embodiment 1:

[0028] Please refer to Figures 1-4 , the present invention provides a technical solution: a clean double-tube sheet heat exchanger, including cylinder A1 and cylinder B2. A partition board 3 is fixedly installed inside cylinder B2. A liquid inlet pipe A4 is fixedly installed outside cylinder A1. A liquid discharge pipe A5 is fixedly installed on the left side of cylinder A1. A liquid inlet pipe B6 is fixedly installed outside cylinder B2. A liquid discharge pipe B7 is fixedly installed outside cylinder B2. A cleaning mechanism 8 is arranged inside cylinder B2. A sealing mechanism 9 is arranged outside cylinder A1.

[0029] The cleaning mechanism 8 includes a disassembly component 81 and two filter components 82. The disassembly component 81 is arranged inside cylinder B2. The two filter components 82 are respectively arranged inside the liquid inlet pipe A4 and the liquid inlet pipe B6.

[0030] Further, the disassembly component 81 includes two springs 811. Both of the two springs 811 are fixedly installed inside the cylinder body B2. One end of the spring 811 away from the cylinder body B2 is fixedly installed with a moving plate 812. One side of the moving plate 812 away from the spring 811 is fixedly installed with a plug post 813. An installation disc 814 is slidably installed outside the plug post 813. A heat exchange tube 815 is fixedly installed on the left side of the installation disc 814. A bundling band 816 is arranged outside the heat exchange tube 815 to bundle a plurality of heat exchange tubes 815 to prevent shaking.

[0031] Further, both the heat exchange tube 815 and the bundling band 816 are arranged inside the cylinder body A1. The left and right sides of the installation disc 814 are respectively in contact with the cylinder body A1 and the cylinder body B2. Through holes are provided at corresponding positions of the installation disc 814 and the heat exchange tube 815 for transporting liquid.

[0032] Further, the filtering component 82 includes four threaded rods 821. The four threaded rods 821 are respectively rotatably installed inside the liquid inlet pipe A4 and the liquid inlet pipe B6. A threaded sleeve 822 is threadedly installed outside the threaded rod 821. Filter meshes 823 are arranged inside both the liquid inlet pipe A4 and the liquid inlet pipe B6. A rotating shaft 824 is rotatably installed inside the filter mesh 823. Two impellers 825 are fixedly installed outside the rotating shaft 824. A scraping plate 826 is fixedly installed at the top of the rotating shaft 824 to clean the filter mesh 823 by rotation to prevent impurities from blocking the filter mesh 823.

[0033] Further, the bottom of the scraping plate 826 is in contact with the filter mesh 823. A limiting block is fixedly installed outside the threaded sleeve 822. The threaded sleeve 822 is slidably installed inside the liquid inlet pipe A4 and the liquid inlet pipe B6, and the threaded sleeve 822 is slidably installed inside the filter mesh 823 to install the filter mesh 823.

[0034] Embodiment 2:

[0035] Please refer to Figure 5 and, in combination with Embodiment 1, it is further obtained that the sealing mechanism 9 includes a flange A91. The flange A91 is fixedly installed outside the cylinder body A1. A flange B92 is fixedly installed outside the cylinder body B2. A sealing ring A93 is arranged outside the flange A91. A sealing ring B94 is arranged outside the flange A91. Two convex blocks 95 are fixedly installed outside both the sealing ring A93 and the sealing ring B94. A fixing bolt 96 is threadedly installed inside the convex block 95 to fix the sealing ring A93 and the sealing ring B94.

[0036] Further, the sealing ring B94 is arranged outside the flange A91 and the sealing ring B94 is arranged outside the flange B92 to install the flange A91 and the flange B92.

[0037] In the actual operation process, when this device is in use, the sealing ring A93 and the sealing ring B94 are arranged outside the flange A91 and the flange B92 through the fixing bolts 96, and the flange A91 and the flange B92 are installed, so that the cylinder A1 and the cylinder B2 are hermetically installed. The cold liquid enters the inside of the cylinder A1 from the liquid inlet pipe A4 and is discharged through the liquid discharge pipe A5. The hot liquid passes through the cylinder B2, the heat exchange pipe 815 and the cylinder B2 in sequence through the liquid inlet pipe B6, and finally is discharged through the liquid discharge pipe B7 for heat exchange. When the cold liquid and the hot liquid enter the inside of the liquid inlet pipe A4 and the liquid inlet pipe B6, the impurities in the liquid are filtered out through the filter screen 823. The flow of the liquid drives the impeller 825 to rotate, so that the rotating shaft 824 drives the scraper 826 to rotate to clean the filter screen 823, avoiding the blockage of the filter screen 823 by impurities. When the filter screen 823 is dirty, the threaded rod 821 can be rotated, so that the threaded sleeve 822 slides out of the inside of the filter screen 823, and the filter screen 823 is rotated clockwise by 90 degrees, so that the filter screen 823 and the connected mechanism can be separated from the inside of the liquid inlet pipe A4 and the liquid inlet pipe B6, ensuring that the filtering effect on the liquid is always optimal. When a small amount of impurities enter the device through the liquid and cause low heat exchange efficiency, the fixing bolts 96 are loosened to separate the cylinder A1 and the cylinder B2, and the two moving plates 812 are pulled, so that while the spring 811 is compressed, the plug post 813 disengages from the inside of the mounting plate 814, and the mounting plate 814 and the heat exchange pipe 815 can be replaced in time.

[0038] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

Claims

1. A clean double tube sheet heat exchanger, comprising a cylinder A (1) and a cylinder B (2), characterized in that: A partition plate (3) is fixedly installed inside the cylinder B (2), a liquid inlet pipe A (4) is fixedly installed outside the cylinder A (1), a liquid discharge pipe A (5) is fixedly installed on the left side of the cylinder A (1), a liquid inlet pipe B (6) is fixedly installed outside the cylinder B (2), a liquid discharge pipe B (7) is fixedly installed outside the cylinder B (2), a cleaning mechanism (8) is arranged inside the cylinder B (2), and a sealing mechanism (9) is arranged outside the cylinder A (1); The cleaning mechanism (8) comprises a disassembly component (81) and two filter components (82), wherein the disassembly component (81) is arranged inside the cylinder body B (2), and the two filter components (82) are arranged inside the liquid inlet pipe A (4) and the liquid inlet pipe B (6) respectively; The sealing mechanism (9) comprises a flange A (91) and a flange B (92), wherein the flange A (91) is fixedly mounted on the outside of the cylinder A (1), and the flange B (92) is fixedly mounted on the outside of the cylinder B (2). A sealing ring A (93) is arranged on the outside of the flange A (91), and a sealing ring B (94) is arranged on the outside of the flange A (91). Two protrusions (95) are fixedly mounted on the outside of the sealing ring A (93) and the sealing ring B (94), and fixing bolts (96) are installed in the internal threads of the protrusions (95).

2. A clean double tube sheet heat exchanger according to claim 1, characterized in that: The disassembly assembly (81) comprises two springs (811), both of which are fixedly mounted inside the cylinder B (2); a movable plate (812) is fixedly mounted on one end of the spring (811) away from the cylinder B (2); a plug-in column (813) is fixedly mounted on the side of the movable plate (812) away from the spring (811); a mounting plate (814) is slidably mounted on the outside of the plug-in column (813); a heat exchange tube (815) is fixedly mounted on the left side of the mounting plate (814); and a strap (816) is provided on the outside of the heat exchange tube (815).

3. A clean double tube sheet heat exchanger according to claim 2, characterized in that: The heat exchange tube (815) and the strap (816) are both arranged inside the cylinder A (1), and the left and right sides of the mounting plate (814) are respectively fitted with the cylinder A (1) and the cylinder B (2), and through holes are opened at corresponding positions of the mounting plate (814) and the heat exchange tube (815).

4. A clean double tube sheet heat exchanger according to claim 1, characterized in that: The filter assembly (82) comprises four threaded rods (821), the four threaded rods (821) being rotatably mounted inside the liquid inlet pipe A (4) and the liquid inlet pipe B (6), respectively; a threaded sleeve (822) is mounted on the external threads of the threaded rods (821); a filter screen (823) is disposed inside the liquid inlet pipe A (4) and the liquid inlet pipe B (6); a rotating shaft (824) is rotatably mounted inside the filter screen (823); two impellers (825) are fixedly mounted outside the rotating shaft (824); and a scraper (826) is fixedly mounted on the top of the rotating shaft (824).

5. A clean double tube sheet heat exchanger according to claim 4, characterized in that: The bottom of the scraper (826) contacts the filter screen (823), a limit block is fixedly installed on the outside of the threaded sleeve (822), the threaded sleeve (822) is slidably installed inside the liquid inlet pipe A (4) and the liquid inlet pipe B (6), and the threaded sleeve (822) is slidably installed inside the filter screen (823).

6. A clean double tube sheet heat exchanger according to claim 1, characterized in that: The sealing ring B (94) is arranged outside the flange A (91), and the sealing ring B (94) is arranged outside the flange B (92).

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