CN215003130U

CN215003130U - Polypropylene graphite pipe with internal reinforced core

Info

Publication number: CN215003130U
Application number: CN202121432984.2U
Authority: CN
Inventors: 何志刚
Original assignee: Taicang Fuxin Anticorrosive Equipment Co ltd
Current assignee: Taicang Fuxin Anticorrosive Equipment Co ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2021-12-03
Anticipated expiration: 2031-06-28

Abstract

A polypropylene graphite pipe with an internal reinforced core belongs to the technical field of novel processing and application of high polymer materials and comprises a group of baffle plates and a group of graphite pipes; the graphite tube comprises a graphite tube body, a carbon fiber inner layer and a group of reinforcing assemblies, wherein the group of reinforcing assemblies are uniformly arranged along the axis direction of the graphite tube body at intervals, the carbon fiber inner layer is arranged on the inner wall of the graphite tube body, and the reinforcing assemblies are composed of a group of carbon fiber reinforcing cores. The polypropylene graphite tube with the internal reinforcing core body of the utility model is provided with the T-shaped carbon fiber supporting core body at the outer wall of the graphite tube at even intervals, thereby enhancing the strength of the graphite tube and prolonging the service life of the graphite tube on the premise of ensuring the heat exchange performance of the graphite tube; the sealing assembly greatly improves the sealing reliability, and simultaneously changes the mode of directly connecting the graphite pipe and the baffle plate into the mode of connecting the graphite pipe through the adapter flange and the baffle plate, thereby improving the capacity of fluid pressure borne by the graphite pipe.

Description

Polypropylene graphite pipe with internal reinforced core

Technical Field

The utility model belongs to the technical field of macromolecular material's novel processing and application, specifically, relate to a polypropylene graphite pipe with inside reinforcing core.

Background

The graphite tube-in-tube heat exchanger is one of the earliest graphite devices in the world, and is widely applied due to the advantages of simple and compact structure, small flow resistance, high heat transfer efficiency, strong anti-crystallization capability and the like. However, the pressure resistance and the temperature resistance of the graphite tubular heat exchanger are poor, the allowable temperature is lower than 130 ℃, and the allowable pressure is less than 0.3 MPa. And cannot be used in the occasions of strong impact and high vibration. Especially under the condition of heating, the reliability is lower.

At present, the commonly used block-hole graphite heat exchangers, especially coolers with liquid cooling media, all have the following problems:

1. the heat exchange tube made of graphite is easy to crack, has low bending resistance and tensile strength, can only be used for low pressure, has low graphite adhesion, is easy to be washed away by liquid in the heat exchange tube, and can cause the problems of damage, fracture and the like of the heat exchange tube after long-time use;

2. no matter the graphite baffle plate or the steel baffle plate, because of the assembly requirement, a certain gap is always reserved between the graphite heat exchange block and the inner wall of the cylinder body, the aim of completely baffling the cooling medium cannot be effectively achieved, and the series flow phenomenon cannot be avoided during heat exchange, so the cooling effect is not ideal;

3. if the graphite pipe is bonded on the baffle plate, the heat exchanger cavity where the graphite pipe is located needs to be flushed with a cooling medium or a medium with cooling, so that the position where the graphite pipe and the baffle plate are bonded is easy to crack under the long-term action of the medium, the graphite pipe is separated from the baffle plate, and the use of the graphite pipe is influenced.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing a polypropylene graphite pipe with inside reinforcing core has solved in the in-service use, and various damaged condition appear more easily in the graphite pipe: such as the breakage of the heat exchange tube, the glue degumming between the heat exchange tube and the tube plate, the breakage of the tube plate, etc.; in addition, the problem of connection stability between the graphite pipe and the baffle plate is solved.

The technical scheme is as follows: the utility model provides a polypropylene graphite pipe with an internal reinforcing core body, which comprises a group of baffle plates and a group of graphite pipes, wherein the baffle plates are arranged in parallel, the baffle plates are in a vertically staggered state, the graphite pipes are arranged in parallel, the axis of each graphite pipe is vertical to the cross section where the baffle plate is arranged, and the graphite pipes all sequentially penetrate through the baffle plates; the graphite pipe comprises a graphite pipe body, a carbon fiber inner layer and a set of reinforcing components, the reinforcing components are evenly arranged along the axis direction of the graphite pipe body at intervals, the carbon fiber inner layer is arranged on the inner wall of the graphite pipe body, the reinforcing components are composed of a set of carbon fiber reinforcing cores, the set of carbon fiber reinforcing cores are arranged on the outer wall of the graphite pipe body, and the set of carbon fiber reinforcing cores are arranged in an annular array mode by taking the center of the graphite pipe body as the center of a circle. The polypropylene graphite pipe with the internal reinforcing core body has reasonable structural design, is particularly suitable for manufacturing large-scale equipment, and is particularly reliable when cold fluid and hot fluid can not be mixed absolutely; the graphite pipe has not only increased structural strength, improves the connected mode between happy graphite pipe and the baffling board simultaneously for the baffling board has good compressive capacity when can stably support the graphite pipe.

Further, in the polypropylene graphite tube with the internal reinforcing core, the graphite tube body is of a tubular structure with openings at two ends, a group of reinforcing component placing components are uniformly arranged in the axial direction of the graphite tube body at intervals, the group of reinforcing component placing components and the group of reinforcing components are arranged in a one-to-one correspondence manner, each reinforcing component placing component is composed of a group of placing grooves, the group of placing grooves are arranged in an annular array manner by taking the center of the graphite tube body as the center of a circle, and the placing grooves form openings on the outer circumference of the graphite tube body. The carbon fiber reinforced core bodies are arranged on the outer wall of the graphite pipe at intervals, and the strength of the graphite pipe is improved when the carbon fiber reinforced core bodies are connected with the baffle plate at positions where the carbon fiber reinforced core bodies are not arranged.

Further, in the polypropylene graphite tube with the internal reinforced core, the group of carbon fiber reinforced cores and the group of placing grooves are arranged in a one-to-one correspondence manner, the carbon fiber reinforced cores are arranged in the placing grooves, and the cross sections of the carbon fiber reinforced cores and the placing grooves are both T-shaped. The support structure of the T-shaped core body can achieve the best effect of increasing the strength in the repeated test process.

Furthermore, baffle plates are arranged at the positions of the graphite pipe body between the reinforcing component placing components.

Furthermore, in the polypropylene graphite tube with the internal reinforcing core body, two symmetrically arranged reinforcing connecting flanges are fixedly arranged at the outer wall of the graphite tube body between the reinforcing component placing components, the baffle plate is arranged between the two symmetrically arranged reinforcing connecting flanges, and sealing components are arranged between the two end faces of the baffle plate and the reinforcing connecting flanges at the two sides of the baffle plate. The simple bonding connection mode of the baffle plate and the graphite pipe is changed into the connection mode of the baffle plate and the graphite pipe through two flanges, so that the connection strength of the graphite pipe and the baffle plate is improved.

Furthermore, the polypropylene graphite pipe with the internal reinforcing core body comprises a sealing flat gasket, a group of embedded screws and a group of locking screws, wherein the sealing flat gasket is arranged between the end face of the baffle plate and the end face of the reinforcing connecting flange, the group of embedded screws are arranged on the baffle plate in an annular array mode, nuts of the embedded screws are fixedly arranged on the baffle plate, the group of embedded screws and the group of locking screws are arranged in a one-to-one correspondence mode, the embedded screws extend out of the threaded portion of the baffle plate and are in threaded connection with the locking screws, the locking screws are arranged on the reinforcing connecting flange, and the group of locking screws are arranged on the reinforcing connecting flange in an annular array mode. Above-mentioned seal structure can make that sealing performance is good between graphite pipe and the baffling board, avoids the medium to pass from the gap between baffling board and the graphite pipe, influences baffling cooling effect, and then also influences the baffling board to the support of graphite pipe.

Furthermore, in the polypropylene graphite tube with the internal reinforcing core body, a first sealing ring is arranged between the sealing flat gasket and the baffle plate, and a second sealing ring is arranged between the sealing flat gasket and the reinforcing connecting flange. The sealing ring is arranged, so that the sealing performance of connection between the baffle plate and the flange is improved.

Furthermore, according to the polypropylene graphite tube with the internal reinforcing core body, the end face, far away from the baffle plate, of the fastening connecting flange is provided with the first groove, the fastening connecting flange is provided with the second threaded hole, the first groove is communicated with the second threaded hole, the locking screw is in threaded connection with the second threaded hole, the nut of the locking screw is arranged in the first groove, one end, close to the baffle plate, of the locking screw is provided with the internal threaded hole, and the embedded screw extends out of the threaded portion of the baffle plate and is in threaded connection with the internal threaded hole.

Furthermore, a third sealing ring is arranged between the nut of the locking screw and the bottom surface of the first groove. And the third sealing ring enables the locking screw and the reinforcing connecting flange to have good sealing performance.

Furthermore, a sealing washer IV is arranged between the nut of the embedded screw and the sealing flat washer. And the sealing washer IV enables the embedded screw and the baffle plate to have good sealing performance.

Above-mentioned technical scheme can find out, the utility model discloses following beneficial effect has: the polypropylene graphite tube with the internal reinforcing core body changes the traditional tubular graphite tube structure, the carbon fiber layer is added on the inner wall of the graphite tube, and the T-shaped carbon fiber supporting core body is uniformly arranged on the outer wall of the graphite tube at intervals, so that the strength of the graphite tube is enhanced, and the service life of the graphite tube is prolonged on the premise of ensuring the heat exchange performance of the graphite tube; the sealing assembly arranged in addition greatly improves the sealing reliability, and simultaneously changes the mode of directly connecting the graphite pipe and the baffle plate into the mode of connecting the graphite pipe through the adapter flange and the baffle plate, thereby improving the pressure bearing capacity of the graphite pipe.

Drawings

FIG. 1 is a schematic structural view of a polypropylene graphite tube with an internal reinforcing core according to the present invention;

FIG. 2 is a first cross-sectional view of a polypropylene graphite tube having an internally reinforced core in accordance with the present invention;

FIG. 3 is a second cross-sectional view of a polypropylene graphite tube having an internally reinforced core in accordance with the present invention;

FIG. 4 is an enlarged view of a polypropylene graphite tube having an internally reinforced core in accordance with the present invention;

FIG. 5 is an enlarged view of a portion of the structure of FIG. 1;

fig. 6 is a partially enlarged view of the point B in fig. 5 according to the present invention.

In the figure: the device comprises a baffle plate 1, a graphite pipe 2, a graphite pipe body 21, a carbon fiber inner layer 22, a reinforcing assembly 23, a carbon fiber reinforced core 231, a reinforcing assembly placing assembly 24, a placing groove 241, an opening 242, a reinforcing connecting flange 25, a first groove 251, a second threaded hole 252, an internal threaded hole 253, a sealing assembly 3, a sealing flat gasket 31, an embedded screw 32, a locking screw 33, a first sealing ring 34, a second sealing ring 35, a third sealing ring 36 and a fourth sealing gasket 37.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example one

The polypropylene graphite tube with the internal reinforced core shown in fig. 1 comprises a group of baffle plates 1 and a group of graphite tubes 2, wherein the group of baffle plates 1 are arranged in parallel, the group of baffle plates 1 are in a vertically staggered state, the group of graphite tubes 2 are arranged in parallel, the axis of each graphite tube 2 is perpendicular to the section of the corresponding baffle plate 1, and the group of graphite tubes 2 sequentially penetrate through the group of baffle plates 1. In fig. 1, only one graphite tube 2 is shown penetrating the baffle plate 1 in order to show the connection relationship between the graphite tube 2 and the baffle plate 1 in detail.

The graphite tube 2 shown in fig. 2-4 includes a graphite tube body 21, a carbon fiber inner layer 22 and a set of reinforcing components 23, the set of reinforcing components 23 are uniformly arranged along the axial direction of the graphite tube body 21 at intervals, the carbon fiber inner layer 22 is arranged on the inner wall of the graphite tube body 21, the reinforcing components 23 are composed of a set of carbon fiber reinforced cores 231, the set of carbon fiber reinforced cores 231 is arranged on the outer wall of the graphite tube body 21, and the set of carbon fiber reinforced cores 231 is arranged in an annular array mode with the center of the graphite tube body 21 as the center of circle.

In addition, the graphite tube body 21 is a tubular structure with openings at two ends, a group of reinforcing component placing assemblies 24 is uniformly arranged in the axial direction of the graphite tube body 21 at intervals, the group of reinforcing component placing assemblies 24 and the group of reinforcing components 23 are arranged in a one-to-one correspondence manner, the reinforcing component placing assemblies 24 are composed of a group of placing grooves 241, the group of placing grooves 241 are arranged in an annular array manner with the center of the graphite tube body 21 as the center, and the placing grooves 241 form openings 242 on the outer circumference of the graphite tube body 21. The group of carbon fiber reinforced cores 231 and the group of placing grooves 241 are arranged in a one-to-one correspondence manner, the carbon fiber reinforced cores 231 are arranged in the placing grooves 241, and the cross sections of the carbon fiber reinforced cores 231 and the placing grooves 241 are both T-shaped. Baffle plates 1 are arranged at the positions of the graphite pipe bodies 21 among the reinforcing component placing components 24.

On the outer circumference of the graphite tube body 21 that finishes processing, set up the reinforcing subassembly at a certain interval and place subassembly 24, the reinforcing subassembly is placed subassembly 24 and is actually a set of standing groove 241 that sets up by a set of annular array and is constituteed, inserts standing groove 241 with this with carbon fiber reinforcement core 231 to fix carbon fiber reinforcement core 231 in standing groove 241 through gluing agent or other modes, thereby increased graphite tube body 21's intensity.

Example two

As shown in fig. 5 and 6, two symmetrically arranged reinforcing connecting flanges 25 are fixedly arranged at the outer wall of the graphite tube body 21 between a group of reinforcing component placing components 24, the baffle plate 1 is positioned between the two symmetrically arranged reinforcing connecting flanges 25, and sealing components 3 are arranged between the two end faces of the baffle plate 1 and the reinforcing connecting flanges 25 at the two sides.

In the structure, the sealing assembly 3 comprises a sealing flat gasket 31, a group of embedded screws 32 and a group of locking screws 33, the sealing flat gasket 31 is arranged between the end surface of the baffle plate 1 and the end surface of the reinforcing connecting flange 25, the group of embedded screws 32 are arranged on the baffle plate 1 in an annular array mode, nuts of the embedded screws 32 are fixedly arranged on the baffle plate 1, the group of embedded screws 32 and the group of locking screws 33 are arranged in a one-to-one correspondence mode, the embedded screws 32 extend out of the threaded portion of the baffle plate 1 to be in threaded connection with the locking screws 33, the locking screws 33 are arranged on the reinforcing connecting flange 25, and the group of locking screws 33 are arranged on the reinforcing connecting flange 25 in an annular array mode. In the 1 machine-shaping in-process of baffling board, in the terminal surface of baffling board is buried in advance with the nut part of buried screw 32, the baffling board is connected with reinforcement connection flange 25, will fasten the attachment flange 25 laminating on the terminal surface of baffling board, the tip that buried screw 32 stretches out baffling board 1 stretches into in the attachment flange 25, screw in locking screw 33, locking screw 33 and buried screw 32 threaded connection, lock gradually, thereby compress tightly sealed plain washer 31 between the terminal surface of baffling board 1 and the terminal surface of reinforcement connection flange 25.

In addition, a first sealing ring 34 is arranged between the sealing flat gasket 31 and the baffle plate 1, and a second sealing ring 35 is arranged between the sealing flat gasket 31 and the reinforcing connecting flange 25.

The sealing connection structure of the embedded screws 32 and the locking screws 33 is that a first groove 251 is formed in the end face, far away from the baffle plate 1, of the fastening connection flange 25, a second threaded hole 252 is formed in the fastening connection flange 25, the first groove 251 is communicated with the second threaded hole 252, the locking screws 33 are in threaded connection with the second threaded holes 252, nuts of the locking screws 33 are arranged in the first groove 251, an internal threaded hole 253 is formed in one end, close to the baffle plate 1, of the locking screws 33, and the embedded screws 32 extend out of the threaded portion of the baffle plate 1 and are in threaded connection with the internal threaded holes 253. And a third sealing ring 36 is arranged between the nut of the locking screw 33 and the bottom surface of the first groove 251. And a sealing washer IV 37 is arranged between the nut of the embedded screw 32 and the sealing flat washer 31.

The third sealing ring 36 and the fourth sealing washer 37 can enable the locking screw 33 and the embedded screw 32 to have good sealing relation with the connected end faces, and sealing performance is improved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principles of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. A polypropylene graphite tube having an internally reinforced core characterized by: the device comprises a group of baffle plates (1) and a group of graphite tubes (2), wherein the group of baffle plates (1) are arranged in parallel, the group of baffle plates (1) are in a vertically staggered state, the group of graphite tubes (2) are arranged in parallel, the axis of each graphite tube (2) is vertical to the section of the corresponding baffle plate (1), and the group of graphite tubes (2) sequentially penetrate through the group of baffle plates (1);

the graphite pipe (2) comprises a graphite pipe body (21), a carbon fiber inner layer (22) and a group of reinforcing assemblies (23), wherein the group of reinforcing assemblies (23) are uniformly arranged along the axis direction of the graphite pipe body (21) at intervals, the carbon fiber inner layer (22) is arranged on the inner wall of the graphite pipe body (21), each reinforcing assembly (23) consists of a group of carbon fiber reinforcing cores (231), the group of carbon fiber reinforcing cores (231) are arranged on the outer wall of the graphite pipe body (21), and the group of carbon fiber reinforcing cores (231) are arranged in an annular array mode by taking the center of the graphite pipe body (21) as the center of a circle.

2. A polypropylene graphite tube having an internally reinforced core in accordance with claim 1, wherein: the graphite tube body (21) is of a tubular structure with two open ends, a group of reinforcing component placing components (24) are uniformly arranged in the axial direction of the graphite tube body (21) at intervals, the group of reinforcing component placing components (24) and the group of reinforcing components (23) are arranged in a one-to-one correspondence mode, each reinforcing component placing component (24) is composed of a group of placing grooves (241), the group of placing grooves (241) are arranged in an annular array mode by taking the center of the graphite tube body (21) as the center of a circle, and openings (242) are formed in the outer circumference of the graphite tube body (21) by the placing grooves (241).

3. A polypropylene graphite tube having an internally reinforced core in accordance with claim 2, wherein: the group of carbon fiber reinforced cores (231) and the group of placing grooves (241) are arranged in a one-to-one correspondence mode, the carbon fiber reinforced cores (231) are arranged in the placing grooves (241), and the cross sections of the carbon fiber reinforced cores (231) and the placing grooves (241) are T-shaped.

4. A polypropylene graphite tube having an internally reinforced core in accordance with claim 2, wherein: baffle plates (1) are arranged at the positions of the graphite pipe bodies (21) among the reinforcing component placing components (24).

5. A polypropylene graphite tube having an internally reinforced core in accordance with claim 2, wherein: graphite pipe body (21) outer wall position department between subassembly (24) is placed to a set of reinforcing subassembly all fixed is equipped with two additional connection flange (25) that the symmetry set up, baffling board (1) is located between two additional connection flange (25) that the symmetry set up to all be equipped with seal assembly (3) between the both ends face of baffling board (1) and the additional connection flange (25) of both sides.

6. The polypropylene graphite tube with an internally reinforced core of claim 5, wherein: the sealing assembly (3) comprises a sealing flat gasket (31), a group of embedded screws (32) and a group of locking screws (33), the sealing flat gasket (31) is arranged between the end face of the baffle plate (1) and the end face of the reinforcing connecting flange (25), the group of embedded screws (32) are arranged on the baffle plate (1) in an annular array mode, screw caps of the embedded screws (32) are fixedly arranged on the baffle plate (1), the group of embedded screws (32) and the group of locking screws (33) are arranged in a one-to-one correspondence mode, the embedded screws (32) extend out of a threaded portion of the baffle plate (1) to be in threaded connection with the locking screws (33), the locking screws (33) are arranged on the reinforcing connecting flange (25), and the group of locking screws (33) are arranged on the reinforcing connecting flange (25) in an annular array mode.

7. The polypropylene graphite tube with an internally reinforced core of claim 6, wherein: a first sealing ring (34) is arranged between the sealing flat gasket (31) and the baffle plate (1), and a second sealing ring (35) is arranged between the sealing flat gasket (31) and the fastening connecting flange (25).

8. The polypropylene graphite tube with an internally reinforced core of claim 6, wherein: the end face, far away from the baffle plate (1), of the fastening connecting flange (25) is provided with a first groove (251), a second threaded hole (252) is formed in the fastening connecting flange (25), the first groove (251) is communicated with the second threaded hole (252), a locking screw (33) is in threaded connection with the second threaded hole (252), a nut of the locking screw (33) is arranged in the first groove (251), an internal threaded hole (253) is formed in one end, close to the baffle plate (1), of the locking screw (33), and a threaded part and an internal threaded hole (253) of the baffle plate (1) extend out of the embedded screw (32) to be in threaded connection.

9. The polypropylene graphite tube with internally reinforced core of claim 8, wherein: and a third sealing ring (36) is arranged between the nut of the locking screw (33) and the bottom surface of the first groove (251).

10. The polypropylene graphite tube with internally reinforced core of claim 8, wherein: and a fourth sealing washer (37) is arranged between the nut of the embedded screw (32) and the flat sealing washer (31).