Graphite heat exchanger

Abstract

The utility model discloses a graphite heat exchanger which comprises a cylinder body, a heat exchange core body is arranged in the cylinder body, an upper sealing head is arranged in the upper end of the cylinder body, a material inlet communicated with the heat exchange core body is formed in the upper sealing head, a lower sealing head is arranged in the lower end of the cylinder body, a material outlet communicated with the heat exchange core body is formed in the lower sealing head, and the material outlet is communicated with the heat exchange core body. An upper cover plate is arranged at the upper end of the upper sealing head and is sequentially connected with the upper sealing head and the upper end of the cylinder body through a plurality of anti-displacement elastic connecting assemblies. According to the graphite heat exchanger, the upper cover plate is connected with the upper sealing head and the barrel through the anti-displacement elastic connecting assembly, when the graphite block expands with heat and contracts with cold due to heat exchange, the spring can absorb the deformation of the graphite block caused by expansion with heat and contraction with cold, the anti-displacement piece can limit the movement of the spring at the same time, the spring is prevented from deforming, and the service life of the graphite block is prolonged. The deformation can be recovered in time, and the sealing performance is further ensured.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a graphite heat exchanger. Background Technology

[0002] Graphite heat exchangers are heat exchangers whose heat transfer components are made of graphite. They have good corrosion resistance, are not prone to scaling on the heat transfer surface, and have good heat transfer performance. Their installation structures can be divided into three types: block-hole type, shell-and-tube type, and plate type. The block-hole type is assembled from several perforated block graphite components. In vertical block-hole graphite heat exchangers, the graphite blocks inside are prone to thermal expansion and contraction during heat exchange, which can affect the sealing performance between the heat exchanger cover plate and the end cap. Prior art, patent number CN220062697U, discloses a circular block-hole type graphite heat exchanger, in which the cover plate, second fixed flange, and first fixed flange are connected by screws. A spring is disposed on the cover plate and sleeved on the screws. The spring is initially in a slightly compressed state, which can adapt to the thermal expansion and contraction of the graphite heat exchange blocks, ensuring that multiple graphite heat exchange blocks are always in a sealed state. However, the spring is prone to slippage during deformation, which weakens its ability to absorb the deformation caused by the thermal expansion and contraction of the graphite block, thus affecting the sealing performance. Summary of the Invention

[0003] The present invention aims to solve at least one of the aforementioned technical problems by providing a graphite heat exchanger that connects the upper cover plate, the upper end cap, and the cylinder through an anti-displacement elastic connection component. This component can absorb the deformation caused by the thermal expansion and contraction of the graphite block, while preventing the spring from deforming and ensuring sealing.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A graphite heat exchanger includes a cylindrical body, inside which a heat exchange core is provided. An upper end cap is provided at the upper end of the cylindrical body, and a material inlet communicating with the heat exchange core is provided on the upper end cap. A lower end cap is provided at the lower end of the cylindrical body, and a material outlet communicating with the heat exchange core is provided on the lower end cap. An upper cover plate is provided at the upper end of the upper end cap, and the upper cover plate is sequentially connected to the upper end cap and the upper end of the cylindrical body by a plurality of anti-displacement elastic connecting components.

[0006] As an improvement to the above technical solution, each of the aforementioned anti-displacement elastic connection components includes a first stud, a spring, and an anti-displacement component. A cylinder upper flange is provided on the outer periphery of the upper end of the cylinder, and a pressure ring flange is provided on the outer periphery of the upper end cap. A plurality of cylinder upper flange holes are spaced circumferentially on the cylinder upper flange. Pressure ring flange holes are provided at positions corresponding to the plurality of cylinder upper flange holes on the pressure ring flange. Upper cover plates are provided at positions corresponding to the plurality of pressure ring flange holes on the upper cover plate. The lower ends of the plurality of first studs pass sequentially through the corresponding upper cover plate holes, pressure ring flange holes, and cylinder upper flange holes. A first nut and a second nut are fitted onto the first studs, respectively abutting against the lower end face of the cylinder upper flange and the upper end face of the pressure ring flange. A third nut is fitted onto the upper end of the first studs. The spring is fitted onto the upper end of the first studs, with both ends abutting against the upper end face of the upper cover plate and the bottom of the third nut, respectively. The anti-displacement component is located between the upper end face of the upper cover plate and the third nut, and is positioned on the outer periphery of the spring.

[0007] As an improvement to the above technical solution, the anti-displacement component includes multiple sets of anti-displacement rods. A first retaining ring is provided between the upper end face of the upper cover plate and the lower end of the spring. A second retaining ring is provided between the bottom of the third nut and the upper end of the spring. Multiple sets of telescopic holes are provided on the second retaining ring. The multiple sets of anti-displacement rods are spaced apart at the position where the first retaining ring is located on the outer periphery of the spring. The upper end of the anti-displacement rod can be movably inserted into the corresponding telescopic hole.

[0008] As an improvement to the above technical solution, a limiting block is provided on the upper end of the anti-detachment rod.

[0009] As an improvement to the above technical solution, the heat exchange core includes multiple sets of graphite blocks arranged along the height direction of the cylinder, and the interior of the graphite blocks is provided with several transverse and longitudinal through holes.

[0010] As an improvement to the above technical solution, the interior of the cylinder is provided with baffle rings at positions between two adjacent groups of graphite blocks.

[0011] As an improvement to the above technical solution, a cooling water inlet is connected to the lower end of one side of the cylinder, a cooling water outlet is connected to the upper end of one side of the cylinder, an exhaust port is connected to the upper end of the other side of the cylinder, and a drain port is connected to the lower end of one side of the cylinder.

[0012] As an improvement to the above technical solution, a lower cover plate is provided on the lower end of the lower head, and a lower flange of the cylinder is provided on the outer periphery of the lower end of the cylinder. A plurality of lower flange holes of the cylinder are provided at intervals along the circumference of the lower flange. A lower cover plate hole is provided on the lower cover plate at a position corresponding to the plurality of lower flange holes of the cylinder. A second stud is inserted into the lower flange hole and the lower cover plate hole respectively. A fourth nut that can abut against the upper end face of the lower flange of the cylinder is fitted on the upper end of the second stud, and a fifth nut that can abut against the lower end face of the lower cover plate is fitted on the lower end of the second stud.

[0013] As an improvement to the above technical solution, a sealing ring is provided between the upper flange of the cylinder and the pressure ring flange.

[0014] As an improvement to the above technical solution, ear seats are provided on both opposite sides of the outer wall of the cylinder.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] This utility model discloses a graphite heat exchanger in which the material to be cooled enters the interior of the cylinder through the material inlet, is cooled after heat exchange through the heat exchange core, and is discharged from the material outlet. The upper and lower end caps respectively seal the interior of the upper and lower ends of the cylinder, enhancing the heat exchanger's sealing performance. Furthermore, the upper cover plate connects the upper end cap and the cylinder via an anti-displacement elastic connecting assembly. When the graphite block expands and contracts due to heat exchange, the spring absorbs the deformation caused by the thermal expansion and contraction, while the anti-displacement component simultaneously limits the spring's movement, preventing deformation and ensuring timely recovery of the deformation, further guaranteeing the sealing performance. Attached Figure Description

[0017] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0019] Figure 2 for Figure 1 Enlarged view of part A;

[0020] Figure 3 This is a top view of an embodiment of the present utility model. Detailed Implementation

[0021] 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.

[0022] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a central component. When a component is described as "connected to" another component, it can be directly connected to the other component or may have a central component. When a component is described as "set on" another component, it can be directly set on the other component or may have a central component. When a component is described as "set in the middle," it is not simply set in the exact center, as long as it is not set within the area defined by both ends being in the middle. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] like Figures 1 to 3As shown, this utility model provides a graphite heat exchanger, including a cylindrical body 100. A heat exchange core 200 is provided inside the cylindrical body 100. An upper end cap 300 is provided at the upper end of the cylindrical body 100. A material inlet 310 communicating with the heat exchange core 200 is opened on the upper end cap 300. A lower end cap 400 is provided at the lower end of the cylindrical body 100. A material outlet 410 communicating with the heat exchange core 200 is opened on the lower end cap 400. An upper cover plate 500 is provided at the upper end of the upper end cap 300. The upper cover plate 500 is sequentially connected to the upper end cap 300 and the upper end of the cylindrical body 100 by a plurality of anti-displacement elastic connecting components 600. This device is a vertical circular block graphite heat exchanger. The upper cover plate 500 has an opening for material inlet 310 for material input. The liquid material to be processed is input through the upper material inlet 310, heat-exchanged by the heat exchange core 200, and discharged through the lower material outlet 410. The lower end of the upper end cap 300 and the upper end of the lower end cap 400 are both sealed inside the cylinder 100, improving sealing and ensuring the heat exchanger's heat exchange effect. Lugs 180 are provided on opposite sides of the outer wall of the cylinder 100 for easy hoisting and transportation of the heat exchanger.

[0025] See Figure 2In a specific embodiment of this application, each of the plurality of anti-displacement elastic connection components 600 includes a first stud 610, a spring 620, and an anti-displacement component 630. A cylinder upper flange 110 is provided on the outer periphery of the upper end of the cylinder 100, and a pressure ring flange 320 is provided on the outer periphery of the upper end cap 300. A plurality of cylinder upper flange holes 111 are spaced circumferentially on the cylinder upper flange 110. Pressure ring flange holes 321 are provided at positions corresponding to the plurality of cylinder upper flange holes 111 on the pressure ring flange 320. Upper cover plate holes 510 are provided at positions corresponding to the plurality of pressure ring flange holes 321 on the upper cover plate 500. The plurality of first studs 610... The lower end of the first stud 610 passes sequentially through the corresponding upper cover plate hole 510, pressure ring flange hole 321, and upper cylinder flange hole 111. A first nut 611 and a second nut 612 are fitted onto the first stud 610, respectively abutting against the lower end face of the upper cylinder flange 110 and the upper end face of the pressure ring flange 320. A third nut 611 is fitted onto the upper end of the first stud 610. The spring 620 is fitted onto the upper end of the first stud 610, with both ends abutting against the upper end face of the upper cover plate 500 and the bottom of the third nut 611, respectively. The anti-displacement component 630 is located between the upper end face of the upper cover plate 500 and the third nut 611, and is positioned on the outer periphery of the spring 620. The spring 620 is a return spring. When the heat exchanger is working, the heat exchange core 200 undergoes thermal expansion and contraction. The spring 620 absorbs the deformation caused by the thermal expansion and contraction of the cylinder 100 and promptly returns to its original position, achieving self-adaptation and ensuring the sealing of the device. In addition, to enhance sealing, a sealing ring is provided between the upper flange 110 and the pressure ring flange 320 of the cylinder.

[0026] Furthermore, to ensure that the direction of the spring force of the spring 620 on the cylinder 100 is always consistent with the direction of the central axis of the spring 620 and to prevent twisting and disengagement, the anti-displacement component 630 includes multiple sets of anti-displacement rods 631. A first retaining ring 632 is provided between the upper end face of the upper cover plate 500 and the lower end of the spring 620. A second retaining ring 633 is provided between the bottom of the third nut 611 and the upper end of the spring 620. Multiple sets of telescopic holes 634 are provided on the second retaining ring 633. The multiple sets of anti-displacement rods 631 are spaced apart at the position where the first retaining ring 632 is located on the outer periphery of the spring 620. The upper end of the anti-displacement rod 631 can be movably inserted into the corresponding telescopic hole 634. The upper end of the anti-detachment rod 631 can extend and retract within the telescopic hole 634. When the cylinder 100 undergoes thermal expansion and contraction, the spring 620 will be compressed or stretched. Under the limiting action of the anti-detachment rod 631, the spring 620 can always extend and retract along the axial direction and generate a restoring force. Furthermore, a limiting block 635 is provided on the upper end of the anti-detachment rod 631 to prevent the upper end of the anti-detachment rod 631 from dislodging from the telescopic hole 634.

[0027] In a specific embodiment of this application, the heat exchange core 200 includes multiple sets of graphite blocks 210 arranged along the height direction of the cylinder 100. Each graphite block 210 has several transverse through holes 211 and longitudinal through holes 222 formed inside. The graphite blocks 210 are existing circular perforated graphite blocks, and their specific structure can refer to existing technology, such as the structure of the graphite heat exchange block in a circular perforated graphite heat exchanger disclosed in patent number CN202321448030.X. Furthermore, to increase the heat exchange time, baffle rings 120 are provided inside the cylinder 100 at positions between adjacent sets of graphite blocks 210.

[0028] In a specific embodiment of this application, a cooling water inlet 130 is connected to the lower end of one side of the cylinder 100, a cooling water outlet 140 is connected to the upper end of one side of the cylinder 100, an exhaust port 150 is connected to the upper end of the other side of the cylinder 100, and a drain port 160 is connected to the lower end of one side of the cylinder 100.

[0029] In a specific embodiment of this application, a lower cover plate 410 is provided on the lower end of the lower end of the lower head 400, and a lower flange 170 is provided on the outer periphery of the lower end of the cylinder 100. A plurality of lower flange holes 171 are spaced circumferentially on the lower flange 170. A lower cover plate hole 411 is provided on the lower cover plate 410 at a position corresponding to the plurality of lower flange holes 171. A second stud 420 is inserted into each of the lower flange holes 171 and the lower cover plate hole 411. A fourth nut 421, capable of abutting against the upper end face of the lower flange 160, is fitted on the upper end of the second stud 420, and a fifth nut 422, capable of abutting against the lower end face of the lower cover plate 410, is fitted on the lower end of the second stud 420. A sealing ring is also provided between the lower cover plate 410 and the lower flange 170.

[0030] This utility model discloses a graphite heat exchanger in which the material to be cooled enters the interior of the cylinder 100 through the material inlet 310, is cooled after heat exchange through the heat exchange core 200, and is discharged through the material outlet 410. The upper end cap 300 and the lower end cap 400 respectively seal the interior of the upper and lower ends of the cylinder 100, enhancing the heat exchanger's sealing performance. Furthermore, the upper cover plate 500 connects the upper end cap 300 and the cylinder 100 via an anti-displacement elastic connecting assembly 600. When the graphite block expands and contracts due to heat exchange, the spring 620 absorbs the deformation caused by the thermal expansion and contraction, and the anti-displacement component 630 simultaneously limits the movement of the spring 620, preventing deformation and ensuring timely recovery of the deformation, further guaranteeing the sealing performance.

[0031] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the scope of the technical solution of this utility model.

Claims

1. A graphite heat exchanger, characterized in that, The device includes a cylindrical body, inside which a heat exchange core is provided. An upper end cap is provided at the upper end of the cylindrical body, and a material inlet communicating with the heat exchange core is provided on the upper end cap. A lower end cap is provided at the lower end of the cylindrical body, and a material outlet communicating with the heat exchange core is provided on the lower end cap. An upper cover plate is provided at the upper end of the upper end cap. The upper cover plate is sequentially connected to the upper end cap and the upper end of the cylindrical body by a number of anti-displacement elastic connecting components.

2. A graphite heat exchanger according to claim 1, characterized in that, Each of the aforementioned anti-displacement elastic connection components includes a first stud, a spring, and an anti-displacement element. A cylinder upper flange is provided on the outer periphery of the upper end of the cylinder, and a pressure ring flange is provided on the outer periphery of the upper end cap. A plurality of cylinder upper flange holes are spaced circumferentially on the cylinder upper flange. A pressure ring flange hole is provided at a position corresponding to each of the plurality of cylinder upper flange holes on the pressure ring flange. An upper cover plate hole is provided at a position corresponding to each of the plurality of pressure ring flange holes on the upper cover plate. The lower ends of the plurality of first studs pass sequentially through the corresponding upper cover plate hole, pressure ring flange hole, and cylinder upper flange hole. A first nut and a second nut are fitted onto the first stud, respectively abutting against the lower end face of the cylinder upper flange and the upper end face of the pressure ring flange. A third nut is fitted onto the upper end of the first stud. The spring is fitted onto the upper end of the first stud, with both ends abutting against the upper end face of the upper cover plate and the bottom of the third nut, respectively. The anti-displacement element is located between the upper end face of the upper cover plate and the third nut, and is positioned on the outer periphery of the spring.

3. A graphite heat exchanger according to claim 2, characterized in that, The anti-displacement component includes multiple sets of anti-displacement rods. A first retaining ring is provided between the upper end face of the upper cover plate and the lower end of the spring. A second retaining ring is provided between the bottom of the third nut and the upper end of the spring. Multiple sets of telescopic holes are provided on the second retaining ring. The multiple sets of anti-displacement rods are spaced apart at the position where the first retaining ring is located on the outer periphery of the spring. The upper end of the anti-displacement rod can be movably inserted into the corresponding telescopic hole.

4. A graphite heat exchanger according to claim 3, characterized in that, A limiting block is provided on the upper end of the anti-detachment rod.

5. A graphite heat exchanger according to claim 1, characterized in that, The heat exchange core includes multiple sets of graphite blocks arranged along the height direction of the cylinder, and the interior of each graphite block has several transverse and longitudinal through holes.

6. A graphite heat exchanger according to claim 5, characterized in that, The interior of the cylinder is equipped with baffle rings located between two adjacent groups of graphite blocks.

7. A graphite heat exchanger according to claim 1, characterized in that, A cooling water inlet is connected to the lower end of one side of the cylinder, a cooling water outlet is connected to the upper end of one side of the cylinder, an exhaust port is connected to the upper end of the other side of the cylinder, and a drain port is connected to the lower end of one side of the cylinder.

8. A graphite heat exchanger according to claim 1, characterized in that, The lower end of the lower head is provided with a lower cover plate, and the outer periphery of the lower end of the cylinder is provided with a lower flange. The lower flange is provided with a plurality of lower flange holes spaced circumferentially. The lower cover plate is provided with a lower cover plate hole at a position corresponding to the plurality of lower flange holes. A second stud is inserted into the lower flange hole and the lower cover plate hole respectively. A fourth nut that can abut against the upper end face of the lower flange is fitted on the upper end of the second stud, and a fifth nut that can abut against the lower end face of the lower cover plate is fitted on the lower end of the second stud.

9. A graphite heat exchanger according to claim 2, characterized in that, A sealing ring is provided between the upper flange and the pressure ring flange of the cylinder.

10. A graphite heat exchanger according to claim 1, characterized in that, The outer wall of the cylinder is provided with ear seats on both opposite sides.

Images