Tubular graphite heat exchanger

Abstract

The utility model discloses a tubular graphite heat exchanger, and relates to the technical field of heat exchanger equipment, according to the tubular graphite heat exchanger, when a cooling medium is input, a clamping seat is connected with a dust removal net sleeve in a clamping manner, and the dust removal net sleeve is attached to the inner wall of a filter box, so that the cooling medium needs to penetrate through a filter plate to be filtered; various impurities in a cooling medium are conveniently filtered and adsorbed, friction damage to the surfaces of the graphite heat exchange tubes is avoided, the service life of the tubular graphite heat exchanger is prolonged, and when to-be-cooled materials are input into the feeding tube, hydraulic data in the tubes are monitored in real time through a hydraulic sensor; and when the hydraulic sensor detects that the hydraulic pressure in the section is too high, the electric control pressure reducing valve is electrically connected with the hydraulic sensor, so that the electric control pressure reducing valve is conveniently controlled in time to reduce the hydraulic pressure in the pipe, the graphite heat exchange pipe is prevented from being influenced by high pressure, and the graphite heat exchange pipe is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchanger equipment, in particular to a shell-and-tube graphite heat exchanger. Background Art

[0002] Graphite heat exchanger is a heat exchanger whose heat transfer components are made of graphite. The graphite used to make the heat exchanger should be impermeable. Impregnated impermeable graphite and pressed impermeable graphite are commonly used. Graphite heat exchanger has good corrosion resistance, heat transfer surface is not easy to scale, and heat transfer performance is good. However, graphite is easy to be brittle and has low bending and tensile strength. Therefore, it can only be used for low pressure, even the block pore structure with the best pressure bearing capacity.

[0003] For example, publication number CN206818030U, the utility model is a shell-and-tube graphite heat exchanger, including a cylinder, a graphite heat exchange tube, an anti-corrosion upper head and an upper tube plate are arranged above the cylinder, a material inlet is arranged on the top of the anti-corrosion upper head, and the upper end of the graphite heat exchange tube is sealed and fixedly connected to the cylinder through the upper tube plate, the upper end of the graphite heat exchange tube is sealed and fixedly connected to the upper tube plate, an anti-corrosion lower head and a lower tube plate are arranged below the cylinder, the lower tube plate is provided with flow holes corresponding to the graphite heat exchange tube, the lower end of the graphite heat exchange tube is inserted into the flow holes provided on the lower tube plate and is sealed and fixedly connected to the lower tube plate, a material outlet is arranged at the bottom of the lower head, the lower head is placed below the cylinder and is sealed and fixedly connected to the cylinder, which can reduce the superposition effect of external loads borne at the bonding point between the upper tube plate and the graphite heat exchange tube, thereby reducing the occurrence of breakage or leakage.

[0004] Existing shell-and-tube graphite heat exchangers need to use cooling media to remove heat when working, but there are certain impurities in the cooling medium, and graphite is easy to crack. Some granular impurities will cause friction to the graphite, scratching the surface of the graphite heat exchange tube, affecting the service life of the shell-and-tube graphite heat exchanger. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a shell-and-tube graphite heat exchanger to solve the problem in the above background technology that the existing shell-and-tube graphite heat exchanger needs to remove heat through a cooling medium when working, but there are certain impurities in the cooling medium, and graphite is easy to crack, and some particulate impurities will cause friction to the graphite, scratching the surface of the graphite heat exchange tube, thus affecting the service life of the shell-and-tube graphite heat exchanger.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a shell-and-tube graphite heat exchanger, comprising a heat exchanger body, a liquid inlet pipe is fixedly connected to the right end of the surface of the heat exchanger body, a filter box is fixedly connected to the right end of the liquid inlet pipe, a snap-fit ​​seat is fixedly installed at the lower end of the filter box, a dust removal mesh sleeve is arranged inside the filter box, a filter plate is fixedly installed inside the dust removal mesh sleeve, connecting plates are fixedly installed on the upper ends of the filter plate and the dust removal mesh sleeve, tube sheets are fixedly installed on the upper and lower sides of the heat exchanger body, graphite heat exchange tubes are fixedly connected between the two tube sheets, a feed pipe is fixedly connected to the upper end of the heat exchanger body, a hydraulic sensor is fixedly installed on the surface of the feed pipe, and an electrically controlled pressure reducing valve is fixedly installed on the surface of the feed pipe located on the upper side of the hydraulic sensor.

[0007] Preferably, the snap-fit ​​seat is snap-fitted and connected to the dust removal net sleeve, and the cross-section of the snap-fit ​​seat is designed as a U-shaped structure.

[0008] Preferably, the connecting plate is detachably connected to the filter box, and an upper end of the connecting plate extends to the outside of the filter box and is fixedly mounted with a handle.

[0009] Preferably, a connection port is fixedly installed at the right end of the filter box, and connectors are fixedly installed at the front and rear ends of the surface of the heat exchanger body.

[0010] Preferably, the graphite heat exchange tubes are evenly distributed, and baffles are fixedly installed on the surfaces of the graphite heat exchange tubes inside the heat exchanger body.

[0011] Preferably, a discharge pipe is fixedly connected to the lower end of the heat exchanger body, and a liquid discharge pipe is fixedly connected to the left end of the surface of the heat exchanger body.

[0012] Preferably, the electrically controlled pressure reducing valve is electrically connected to a hydraulic sensor, and an information transmission module is fixedly mounted on the hydraulic sensor. Beneficial Effects

[0013] The utility model provides a shell-and-tube graphite heat exchanger. Compared with the prior art, it has the following beneficial effects:

[0014] 1. When the cooling medium is input into the shell-and-tube graphite heat exchanger, the shell-and-tube graphite heat exchanger is connected with the dust removal mesh sleeve through the snap-fit ​​seat, and the dust removal mesh sleeve and the inner wall of the filter box are in contact with each other, so that the cooling medium must pass through the filter plate for filtration, which is convenient for filtering and adsorbing various impurities in the cooling medium, avoiding friction damage to the surface of the graphite heat exchange tube, and is conducive to extending the service life of the shell-and-tube graphite heat exchanger.

[0015] 2. For this tubular graphite heat exchanger, when the material to be cooled is input into the feed pipe, the hydraulic data in the pipe is monitored in real time through the hydraulic sensor, and the data is output to the terminal for statistical processing in conjunction with the information transmission module. When the hydraulic sensor detects that the hydraulic pressure in the section is too high, the electronically controlled pressure reducing valve is electrically connected to the hydraulic sensor, so as to timely control the electronically controlled pressure reducing valve to reduce the hydraulic pressure in the pipe, thereby avoiding the high pressure from affecting the graphite heat exchange tube, which is beneficial to protecting the graphite heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the hydraulic sensor of the utility model.

[0018] Figure 3 This is a schematic diagram of the filter box structure of the utility model.

[0019] Figure 4 It is a structural schematic diagram of the utility model.

[0020] In the figure: 1. Heat exchanger body; 2. Liquid inlet pipe; 3. Filter box; 4. Snap-fit ​​seat; 5. Dust removal mesh; 6. Filter plate; 7. Connecting plate; 8. Tube plate; 9. Graphite heat exchange tube; 10. Feed pipe; 11. Hydraulic sensor; 12. Electric pressure reducing valve; 13. Handle; 14. Connection port; 15. Connector; 16. Baffle; 17. Discharge pipe; 18. Liquid discharge pipe; 19. Information transmission module. 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] See also Figure 1-4The utility model provides a technical solution: a tubular graphite heat exchanger, comprising a heat exchanger body 1, a liquid inlet pipe 2 is fixedly connected to the right end of the surface of the heat exchanger body 1, a filter box 3 is fixedly connected to the right end of the liquid inlet pipe 2, a snap-fit ​​seat 4 is fixedly installed at the lower end of the filter box 3, a dust removal net sleeve 5 is arranged inside the filter box 3, a filter plate 6 is fixedly installed inside the dust removal net sleeve 5, a connecting plate 7 is fixedly installed at the upper ends of the filter plate 6 and the dust removal net sleeve 5, the snap-fit ​​seat 4 is snap-fitted and connected with the dust removal net sleeve 5, and the cross-section of the snap-fit ​​seat 4 is designed as a U-shaped structure, The connecting plate 7 is detachably connected to the filter box 3. The upper end of the connecting plate 7 extends to the outside of the filter box 3 and is fixedly installed with a handle 13. The right end of the filter box 3 is fixedly installed with a connecting port 14. When the cooling medium is input, it is connected with the dust removal net sleeve 5 through the snap-fit ​​seat 4, and the dust removal net sleeve 5 and the inner wall of the filter box 3 are in contact with each other, so that the cooling medium must pass through the filter plate 6 for filtration, which is convenient for filtering and adsorbing various impurities in the cooling medium, avoiding friction damage to the surface of the graphite heat exchange tube 9, and is conducive to extending the service life of the tubular graphite heat exchanger;

[0023] Tube sheets 8 are fixedly installed on both upper and lower sides of the heat exchanger body 1, and graphite heat exchange tubes 9 are fixedly connected between the two tube sheets 8. Connectors 15 are fixedly installed on the front and rear ends of the surface of the heat exchanger body 1. The graphite heat exchange tubes 9 are evenly distributed. Baffles 16 are fixedly installed on the surface of the graphite heat exchange tubes 9 inside the heat exchanger body 1. A discharge pipe 17 is fixedly connected to the lower end of the heat exchanger body 1, and a liquid discharge pipe 18 is fixedly connected to the left end of the surface of the heat exchanger body 1. First, the feed pipe 10 inputs the material to be cooled, and the cooling medium is input from the liquid feed pipe 2. When the material to be cooled passes through the graphite heat exchange tube 9, the excellent thermal conductivity of the graphite heat exchange tube is used to quickly transfer the heat on the material from the graphite heat exchange tube 9 to the cooling medium outside, and the cooling medium is discharged from the liquid discharge pipe 18, and the cooled material is discharged from the discharge pipe 17 for collection, which is conducive to giving full play to the heat dissipation capacity of the tubular graphite heat exchanger.

[0024] A feed pipe 10 is fixedly connected to the upper end of the heat exchanger body 1, and a hydraulic sensor 11 is fixedly installed on the surface of the feed pipe 10. An electrically controlled pressure reducing valve 12 is fixedly installed on the surface of the feed pipe 10, located on the upper side of the hydraulic sensor 11. The electrically controlled pressure reducing valve 12 is electrically connected to the hydraulic sensor 11, and an information transmission module 19 is fixedly installed on the hydraulic sensor 11. When the feed pipe 10 inputs the material to be cooled, the hydraulic data in the pipe is monitored in real time through the hydraulic sensor 11, and the data is output to the terminal for statistical processing in conjunction with the information transmission module 19. When the hydraulic sensor 11 detects that the hydraulic pressure in the section is too high, the electrically controlled pressure reducing valve 12 is electrically connected to the hydraulic sensor 11, so as to timely control the electrically controlled pressure reducing valve 12 to reduce the hydraulic pressure in the pipe, thereby avoiding the high pressure affecting the graphite heat exchange tube 9, which is beneficial to protecting the graphite heat exchange tube 9.

[0025] During operation, the material to be cooled is first inputted into the feed pipe 10, and the cooling medium is inputted into the liquid inlet pipe 2 at the same time. When the material to be cooled passes through the graphite heat exchange tube 9, the excellent thermal conductivity of the graphite heat exchange tube is utilized to quickly transfer the heat on the material from the graphite heat exchange tube 9 to the cooling medium outside, and the cooling medium is discharged from the liquid outlet pipe 18, and the cooled material is collected from the discharge pipe 17. When the cooling medium is inputted, the dust removal net sleeve 5 is engaged and connected through the engagement seat 4, and the dust removal net sleeve 5 and the inner wall of the filter box 3 are both in contact with each other, so that the cooling medium is evenly distributed. It needs to be filtered through the filter plate 6 to facilitate filtering and adsorbing various impurities in the cooling medium to avoid friction damage to the surface of the graphite heat exchange tube 9. When the feed pipe 10 inputs the material to be cooled, the hydraulic data in the tube is monitored in real time through the hydraulic sensor 11, and the data is output to the terminal for statistical processing in conjunction with the information transmission module 19. When the hydraulic sensor 11 detects that the hydraulic pressure in the section is too high, the electronically controlled pressure reducing valve 12 is electrically connected to the hydraulic sensor 11 to facilitate timely control of the electronically controlled pressure reducing valve 12 to reduce the hydraulic pressure in the tube to avoid high pressure affecting the graphite heat exchange tube 9.

[0026] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A shell-and-tube graphite heat exchanger, comprising a heat exchanger body (1), characterized in that: The right end of the surface of the heat exchanger body (1) is fixedly connected to a liquid inlet pipe (2), the right end of the liquid inlet pipe (2) is fixedly connected to a filter box (3), a snap-fit ​​seat (4) is fixedly installed at the lower end of the filter box (3), a dust removal net sleeve (5) is arranged inside the filter box (3), a filter plate (6) is fixedly installed inside the dust removal net sleeve (5), and a connecting plate (7) is fixedly installed at the upper ends of the filter plate (6) and the dust removal net sleeve (5), and tube sheets (8) are fixedly installed on the upper and lower sides of the heat exchanger body (1), and a graphite heat exchange tube (9) is fixedly connected between the two tube sheets (8), and a feed pipe (10) is fixedly connected to the upper end of the heat exchanger body (1), a hydraulic sensor (11) is fixedly installed on the surface of the feed pipe (10), and an electric-controlled pressure-reducing valve (12) is fixedly installed on the surface of the feed pipe (10) on the upper side of the hydraulic sensor (11).

2. The shell-and-tube graphite heat exchanger according to claim 1, characterized in that: The snap-fit ​​seat (4) is snap-fitted and connected to the dust removal net sleeve (5), and the cross-section of the snap-fit ​​seat (4) is designed to be U-shaped.

3. The shell-and-tube graphite heat exchanger according to claim 1, characterized in that: The connecting plate (7) is detachably connected to the filter box (3), and a handle (13) is fixedly mounted on the upper end of the connecting plate (7) extending to the outside of the filter box (3).

4. The shell-and-tube graphite heat exchanger according to claim 3, characterized in that: A connection port (14) is fixedly mounted on the right end of the filter box (3), and connection pieces (15) are fixedly mounted on the front and rear ends of the surface of the heat exchanger body (1).

5. The shell-and-tube graphite heat exchanger according to claim 4, characterized in that: The graphite heat exchange tubes (9) are evenly distributed, and a baffle (16) is fixedly installed on the surface of the graphite heat exchange tubes (9) inside the heat exchanger body (1).

6. The shell-and-tube graphite heat exchanger according to claim 5, characterized in that: A discharge pipe (17) is fixedly connected to the lower end of the heat exchanger body (1), and a liquid discharge pipe (18) is fixedly connected to the left end of the surface of the heat exchanger body (1).

7. The shell-and-tube graphite heat exchanger according to claim 1, characterized in that: The electrically controlled pressure reducing valve (12) is electrically connected to a hydraulic sensor (11), and an information transmission module (19) is fixedly mounted on the hydraulic sensor (11).

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