CN118258255A - Graphite heat exchanger - Google Patents

Abstract

The invention relates to the technical field of heat exchangers, in particular to a graphite heat exchanger; the graphite heat exchanger includes: the graphite heat exchanger comprises a graphite heat exchanger body, a metal pipeline, a material pipe and a buffer, wherein a plurality of graphite heat exchange pipes are arranged in the graphite heat exchanger body; a regulator is also arranged on the material pipe; a buffer is connected and installed at the position of the liquid phase heat source inlet of the graphite heat exchanger body; the graphite heat exchanger can enable the whole graphite heat exchanger to be rapidly buffered and damped when being impacted, and the probability of damage of the whole graphite heat exchanger caused by flow fluctuation of materials to be heat-exchanged is reduced; meanwhile, the regulator is further arranged on the material pipe, the installed regulator can control and regulate the air pressure of high-temperature steam conveyed inside the material pipe according to production operation requirements, the phenomenon that the high-temperature steam enters the graphite heat exchanger body to flash evaporation is avoided, impact damage is caused to the graphite heat exchange pipe arranged inside the graphite heat exchanger body, and the service life of the graphite heat exchange pipe is shortened.

Description

Graphite heat exchanger

Technical Field

The invention relates to the technical field of heat exchangers, in particular to a graphite heat exchanger.

Background

A heat exchanger, which is a device that transfers part of the heat of a hot fluid to a cold fluid, and is also called a heat exchanger; and the graphite heat exchanger, as the name implies, is a heat exchanger made of graphite for the heat transfer assembly; the graphite heat exchanger has good corrosion resistance, the heat transfer surface is not easy to scale, and the heat transfer performance is good, so the graphite heat exchanger is widely applied to chemical production;

There is provided in the related art a heat exchanger for manufacturing a heat exchange tube from a graphite raw material, the heat exchanger comprising: the graphite heat exchanger comprises a graphite heat exchanger body, a first connecting column, a second connecting column and a buffer device; the first connecting column is arranged between the outer wall of the graphite heat exchanger body and the metal pipeline flange of the graphite heat exchanger body; the second connecting column is arranged between the metal pipeline flange and the material pipeline flange of the graphite heat exchanger body; the buffer device is connected with a liquid-phase heat source outlet of the graphite heat exchanger body; the buffer device comprises a backflow prevention element and a buffer tube, the backflow prevention element is connected with a liquid phase heat source outlet of the graphite heat exchanger body, and the buffer tube is connected with the backflow prevention element;

according to the heat exchanger, the first connecting column is arranged between the outer wall of the graphite heat exchanger body and the metal pipeline flange of the graphite heat exchanger body, and the second connecting column is arranged between the metal pipeline flange and the material pipeline flange of the graphite heat exchanger body, so that the stress is eliminated, the stability of the graphite heat exchanger body is improved, and the probability of damage to graphite heat exchanger body equipment due to flow fluctuation caused by instrument failure, control failure or other reasons is reduced; the liquid phase heat source outlet of the graphite heat exchanger body is connected with the buffer device, so that the condition that the graphite heater is damaged due to water hammer caused by flash evaporation of condensate in a material pipeline is prevented;

However, the heat exchanger also has some defects, for example, although stress that the graphite heat exchanger body equipment is damaged due to flow fluctuation caused by meter failure, control failure or other reasons is eliminated through the cooperation of the first connecting column and the second connecting column, the shock absorption is not performed, so that intense vibration generated when the material pipe is impacted can be transmitted to a metal pipe arranged on the heat exchanger until the material pipe is finally transmitted to a graphite heat exchange pipe connected to one side of the metal pipe, and impact damage is caused to the graphite heat exchange pipe; the material pipe is not additionally provided with the regulating valve, so that high-temperature liquid phase or gas phase entering the heat exchanger through the material pipe is always in constant dynamic pressure, flash evaporation phenomenon easily occurs in the heat exchanger, and the graphite heat exchange pipe arranged in the heat exchanger is damaged;

The present invention is directed to providing a graphite heat exchanger against the above-mentioned problems in the background art.

Disclosure of Invention

The present invention is directed to a graphite heat exchanger, which solves the problems set forth in the background art.

In order to achieve the above purpose, the present invention provides the following technical solutions:

A graphite heat exchanger, the graphite heat exchanger comprising:

The graphite heat exchanger comprises a graphite heat exchanger body, a metal pipeline, a material pipe and a buffer, wherein a plurality of graphite heat exchange pipes are installed in the graphite heat exchanger body, one ends of the installed graphite heat exchange pipes are all connected with the metal pipeline in a concentrated mode, a metal pipeline flange is arranged on one side of the metal pipeline, one end of the arranged metal pipeline flange is connected with the outer side of the graphite heat exchanger body through a plurality of first connecting columns, and damping springs are wrapped on the outer sides of the arranged first connecting columns; one end of the material pipe is provided with a material pipe flange, the material pipe flange is connected with the metal pipe flange through a plurality of second connecting columns, and damping gaskets are filled between the arranged metal pipe flange and the material pipe flange at the inner sides of the plurality of second connecting columns; meanwhile, a regulator which can control and regulate the air pressure of high-temperature steam conveyed in the material pipe according to the production operation requirement is also arranged on the material pipe;

and a buffer which can avoid the reflux phenomenon of the liquid phase heat source after heat exchange is arranged at the inlet position of the liquid phase heat source of the graphite heat exchanger body.

As a further scheme of the invention: a baffle plate is fixedly arranged in the regulator, and a feeding cavity is formed between the outer side of the baffle plate and the inner wall of the regulator; the feeding cavity is communicated with the inside of the material pipe; meanwhile, a movable cavity is formed in the partition plate, and an adjusting component is arranged in the movable cavity.

As a further scheme of the invention: the adjusting assembly comprises an adjusting block, a movable rod and a crank, wherein the adjusting block is slidably arranged in the movable cavity, and a slot is formed in the surface of the adjusting block; one end of the adjusting block is movably connected with the movable rod; one end of the movable rod is movably arranged on the adjusting block, and the other end of the movable rod is movably arranged with one end of the crank; one end of the crank is provided with a rotating shaft, and a handle is arranged at the tail end part of the top end of the rotating shaft, which penetrates through the inner wall of the regulator.

As a further scheme of the invention: the graphite heat exchanger body is respectively provided with a gas-phase heat source inlet, a gas-phase material outlet, a gas-phase heat source outlet, a liquid-phase material inlet and a liquid-phase heat source inlet, and the liquid-phase heat source inlet is provided with a buffer and a buffer tube.

As a further scheme of the invention: buffer flanges are arranged at two ends of the buffer, and a liquid discharge valve is arranged at the lower end of the buffer.

As a further scheme of the invention: a liquid inlet cavity, a buffer cavity and a liquid discharge cavity are formed in the buffer, one end of the liquid inlet cavity is communicated with the lower end of the buffer cavity, and a non-return assembly is arranged in the buffer cavity; the upper end of the buffer cavity is communicated with one end of the liquid draining cavity.

As a further scheme of the invention: the non-return assembly comprises a piston, a movable rod and a limiting end head, the limiting end head is arranged at the outer side of the upper end of the buffer, and the movable rod is movably arranged in the buffer cavity; the piston is arranged at the bottom end of the movable rod, the top end of the movable rod is movably arranged inside the limiting end head, and the part of the movable rod between the piston and the inner wall of the buffer cavity is sleeved with a compression spring.

Compared with the prior art, the invention has the beneficial effects that:

compared with the prior heat exchanger, the graphite heat exchanger has the following advantages:

1. The damping spring, the metal pipeline flange and the material pipeline flange are sleeved on the first connecting column, and the damping gasket is filled between the metal pipeline flange and the material pipeline flange, so that the whole graphite heat exchanger can be rapidly buffered and damped when impacted, and the probability that the whole graphite heat exchanger is damaged due to flow fluctuation of the material to be subjected to heat exchange is reduced; meanwhile, the regulator is also arranged on the material pipe, the installed regulator can control and regulate the air pressure of high-temperature steam conveyed inside the material pipe according to production operation requirements, the phenomenon that the high-temperature steam enters the graphite heat exchanger body to flash evaporation is avoided, impact damage is caused to the graphite heat exchange pipe arranged inside the graphite heat exchanger body, and the service life of the graphite heat exchange pipe is shortened;

2. The buffer is communicated and installed at the position of the liquid-phase heat source inlet of the graphite heat exchanger body, and the buffer can prevent the liquid-phase heat source from flowing back after heat exchange and prevent high-temperature steam from entering the graphite heat exchanger body to generate flash evaporation; the buffer can effectively ensure that the buffer is not easy to store the cooled liquid temporarily through the liquid inlet cavity and the liquid outlet cavity which are obliquely designed; in addition, the liquid stored in the buffer can be finally discharged in a concentrated way through the liquid discharge valve which is opened.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly introduce the drawings that are needed in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present invention.

Fig. 1 is a schematic structural diagram of a graphite heat exchanger according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of an internal structure of a regulator of a graphite heat exchanger according to an embodiment of the present invention.

Fig. 3 is a schematic diagram illustrating installation of a buffer of a graphite heat exchanger according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a buffer of a graphite heat exchanger according to an embodiment of the present invention.

Fig. 5 is a schematic diagram illustrating an internal structure of a buffer of a graphite heat exchanger according to an embodiment of the present invention.

In the figure: the graphite heat exchanger comprises a 1-graphite heat exchanger body, a 2-first connecting column, a 3-damping spring, a 4-metal pipeline flange, a 5-second connecting column, a 6-damping gasket, a 7-material pipeline flange, an 8-material pipeline, a 9-regulator, a 10-handle, an 11-feeding cavity, a 12-partition plate, a 13-rotating shaft, a 14-crank, a 15-movable rod, a 16-movable cavity, a 17-regulating block, a 18-slot, a 19-gas phase heat source inlet, a 20-gas phase material outlet, a 21-gas phase heat source outlet, a 22-liquid phase material inlet, a 23-liquid phase heat source outlet, a 24-buffer, a 25-buffer pipe, a 26-buffer flange, a 27-liquid discharge valve, a 28-liquid inlet cavity, a 29-buffer cavity, a 30-piston, a 31-liquid discharge cavity, a 32-compression spring, a 33-movable rod and a 34-limiting end.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Examples

Referring to fig. 1 and 3, a graphite heat exchanger provided in an embodiment of the present invention includes:

A graphite heat exchanger body 1, a metal pipe, a material pipe 8 and a buffer 24; the graphite heat exchanger body 1 is used for carrying out heat exchange on materials entering the graphite heat exchanger body; wherein, a plurality of graphite heat exchange tubes are arranged in the graphite heat exchanger body 1, and the graphite heat exchange tubes arranged in the graphite heat exchanger body 1 are of the prior art and are not further described herein;

One end of each of the plurality of graphite heat exchange tubes is connected with a metal pipeline in a concentrated manner, one side of the metal pipeline is provided with a metal pipeline flange 4, one end of the metal pipeline flange 4 is connected with the outer side of the graphite heat exchanger body 1 through a plurality of first connecting columns 2, and damping springs 3 are wrapped on the outer sides of the first connecting columns 2; one end of the material pipe 8 is provided with a material pipe flange 7, the material pipe flange 7 is connected with the metal pipe flange 4 through a plurality of second connecting columns 5, and damping gaskets 6 are filled between the arranged metal pipe flange 4 and the material pipe flange 7 at the inner sides of the plurality of second connecting columns 5; through the cooperation of the first connecting column 2 and the second connecting column 5, the connecting structure between the graphite heat exchanger body 1 and the material pipe 8 is enhanced, so that the whole graphite heat exchanger is not easy to be impacted by the outside; the damping spring 3 sleeved on the first connecting column 2, the damping gasket 6 filled between the metal pipeline flange 4 and the material pipeline flange 7 can enable the whole graphite heat exchanger to be rapidly buffered and damped when being impacted, and the probability of damage of the whole graphite heat exchanger caused by flow fluctuation of the material to be heat-exchanged is reduced; meanwhile, a regulator 9 is also arranged on the material pipe 8, the regulator 9 can control and regulate the air pressure of high-temperature steam conveyed inside the material pipe 8 according to production operation requirements, the high-temperature steam is prevented from entering the graphite heat exchanger body 1 to generate flash evaporation, impact damage is caused to the graphite heat exchange pipe arranged inside the graphite heat exchanger body 1, and the service life of the graphite heat exchange pipe is shortened;

In addition, the buffer 24 is connected and installed at the position of the liquid-phase heat source inlet 23 of the graphite heat exchanger body 1, the installed buffer 24 can prevent the liquid-phase heat source from flowing back and showing after heat exchange, and the same action as the arranged regulator 9 is realized, so that the phenomenon that high-temperature steam enters the graphite heat exchanger body 1 to flash is avoided, impact damage is caused to the graphite heat exchange tube installed in the graphite heat exchanger body 1, and the service life of the graphite heat exchange tube is shortened;

Referring to fig. 2, in one embodiment of the present invention, a partition 12 is fixed inside the regulator 9, and a feeding cavity 11 is formed between the outer side of the partition 12 and the inner wall of the regulator 9; the feeding cavity 11 is communicated with the inside of the material pipe 8; meanwhile, a movable cavity 16 is formed in the partition plate 12, and an adjusting component is arranged in the movable cavity 16; the arranged adjusting component can adjust and control the gap between the feeding cavity 11 and the inside of the material pipe 8, so as to adjust and change the air pressure of high-temperature steam entering the inside of the material pipe 8, avoid the flash evaporation phenomenon of the high-temperature steam and damage the graphite heat exchange pipe;

Specifically, the adjusting component comprises an adjusting block 17, a movable rod 15 and a crank 14, wherein the adjusting block 17 is slidably arranged in the movable cavity 16, and a slot 18 is formed in the surface of the adjusting block 17; one end of the adjusting block 17 is movably connected with the movable rod 15; one end of the movable rod 15 is movably arranged on the adjusting block 17, and the other end of the movable rod 15 is movably arranged with one end of the crank 14; a rotating shaft 13 is arranged at one end of the crank 14, and a handle 10 is arranged at the tail end part of the top end of the rotating shaft 13, which penetrates through the inner wall of the regulator 9;

in the embodiment of the invention, when the air pressure of high-temperature steam in the material pipe 8 is controlled by the arranged adjusting component, an operator applies force to the position of the handle 10 to drive the rotating shaft 13 to rotate, and when the rotating shaft 13 rotates, the rotating shaft 13 drives the crank 14 to rotate, so that one end of the rotating crank 14 drives the movable rod 15 to movably displace; when the movable rod 15 moves, the adjusting block 17 is driven to slide and move in the partition plate 12, so that the gap size formed by the adjusting block 17 at the connection position of the feeding cavity 11 and the material pipe 8 is adjusted and changed, namely, the space gap size of high-temperature steam passing through the slot 18 is changed, and the adjustment of the high-temperature steam pressure is realized;

Referring to fig. 3 and 4, in one embodiment of the present invention, the graphite heat exchanger body 1 is provided with a gas phase heat source inlet 19, a gas phase material outlet 20, a gas phase heat source outlet 21, a liquid phase material inlet 22 and a liquid phase heat source inlet 23, wherein a buffer 24 and a buffer tube 25 are installed on the liquid phase heat source inlet 23; the buffer 24 is matched with the buffer tube 25 to avoid flash evaporation phenomenon of high-temperature liquid phase reflux, and damage is caused to the graphite heat exchange tube arranged in the graphite heat exchanger body 1;

Further, the two ends of the buffer 24 are provided with buffer flanges 26, and the buffer flanges 26 are convenient for connecting the whole buffer 24 with the liquid phase heat source inlet 23; the lower end of the buffer 24 is provided with a liquid discharge valve 27, and the liquid discharge valve 27 can orderly discharge the cooled liquid phase temporarily stored in the buffer 24;

Specifically, a liquid inlet cavity 28, a buffer cavity 29 and a liquid discharge cavity 31 are formed in the buffer 24, one end of the liquid inlet cavity 28 is communicated with the lower end of the buffer cavity 29, and a non-return assembly is arranged in the buffer cavity 29; the upper end of the buffer cavity 29 is communicated with one end of the liquid draining cavity 31;

In the embodiment of the invention, when the high-temperature liquid phase discharged from the interior of the graphite heat exchanger body 1 enters the interior of the buffer 24, the high-temperature liquid phase is firstly in the liquid inlet cavity 28 formed in the interior of the buffer 24, and flows in the liquid inlet cavity 28; until finally flowing into the buffer cavity 29, at the moment, the non-return assembly is impacted, so that the buffer cavity 29 is opened by high-temperature air pressure impact, and finally, the air flows into the liquid discharge cavity 31 from the upper end of the buffer cavity 29 and is discharged from the liquid discharge cavity 31;

When the circulation of the high-temperature liquid phase is stopped, the arranged non-return assembly is restored to the initial state, the inside of the buffer cavity 29 is closed again, and the phenomenon of flash evaporation of the graphite heat exchange tube caused by backflow of the high-temperature liquid phase temporarily stored in the buffer cavity 29 is avoided; meanwhile, the liquid inlet cavity 28 and the liquid outlet cavity 31 which are obliquely designed can effectively ensure that the liquid in the buffer 24 is not easy to temporarily store and cool; finally, the liquid stored in the buffer 24 can be intensively discharged through the liquid discharge valve 27 which is opened;

Referring to fig. 5, specifically, in the embodiment of the present invention, the non-return assembly includes a piston 30, a movable rod 33, and a limiting end 34, the limiting end 34 is mounted on the outer side of the upper end of the buffer 24, and the movable rod 33 is movably mounted inside the buffer cavity 29; the bottom end of the movable rod 33 is provided with a piston 30, the top end of the movable rod 33 is movably arranged in the limiting end 34, and a compression spring 32 is sleeved on the part of the movable rod 33 between the piston 30 and the inner wall of the buffer cavity 29;

In the embodiment of the present invention, when the high-temperature liquid phase inside the buffer 24 is automatically controlled to circulate and close by the set non-return assembly, for example, when the inside of the buffer 24 enters the high-temperature liquid phase, an impact force is generated, the impact piston 30 slides and displaces, so that the movable rod 33 moves and simultaneously presses the compression spring 32 to cause elastic variable; when the circulation of the high-temperature liquid phase is stopped, the high-temperature liquid phase is restored to the initial state under the action of the elastic force generated by the deformation of the compression spring 32, so that the arranged piston 30 is closed to the inside of the buffer cavity 29 again;

in the description of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (7)

1. A graphite heat exchanger, comprising: the graphite heat exchanger comprises a graphite heat exchanger body (1), a metal pipeline, a material pipe (8) and a buffer (24), wherein a plurality of graphite heat exchange pipes are arranged in the graphite heat exchanger body (1), and one ends of the plurality of graphite heat exchange pipes are all connected with the metal pipeline in a centralized manner; the method is characterized in that:

One side of the metal pipeline is provided with a metal pipeline flange (4), one end of the metal pipeline flange (4) is connected with the outer side of the graphite heat exchanger body (1) through a plurality of first connecting columns (2), and the outer side of the first connecting columns (2) is wrapped with a damping spring (3); one end of the material pipe (8) is provided with a material pipe flange (7), the material pipe flange (7) is connected with the metal pipe flange (4) through a plurality of second connecting columns (5), and shock absorption gaskets (6) are filled between the metal pipe flange (4) and the material pipe flange (7) at the inner sides of the plurality of second connecting columns (5);

Meanwhile, a regulator (9) which can control and regulate the air pressure of high-temperature steam conveyed in the material pipe (8) according to the production operation requirement is also arranged on the material pipe (8); a buffer (24) which can avoid the backflow phenomenon of the liquid phase heat source after heat exchange is arranged at the position of the liquid phase heat source inlet (23) of the graphite heat exchanger body (1) in a connecting mode.

2. The graphite heat exchanger of claim 1, wherein: a partition board (12) is fixedly arranged in the regulator (9), and a feeding cavity (11) is formed between the outer side of the partition board (12) and the inner wall of the regulator (9); the feeding cavity (11) is communicated with the inside of the material pipe (8); meanwhile, a movable cavity (16) is formed in the partition plate (12), and an adjusting component is arranged in the movable cavity (16).

3. The graphite heat exchanger of claim 2, wherein: the adjusting assembly comprises an adjusting block (17), a movable rod (15) and a crank (14), wherein the adjusting block (17) is slidably arranged in the movable cavity (16), and a slot (18) is formed in the surface of the adjusting block (17); one end of the adjusting block (17) is movably connected with the movable rod (15); one end of the movable rod (15) is movably arranged on the adjusting block (17), and the other end of the movable rod (15) is movably arranged with one end of the crank (14); one end of the crank (14) is provided with a rotating shaft (13), and a handle (10) is arranged at the tail end part of the top end of the rotating shaft (13) which penetrates through the inner wall of the regulator (9).

4. The graphite heat exchanger of claim 1, wherein: the graphite heat exchanger is characterized in that a gas-phase heat source inlet (19), a gas-phase material outlet (20), a gas-phase heat source outlet (21), a liquid-phase material inlet (22) and a liquid-phase heat source inlet (23) are respectively arranged on the graphite heat exchanger body (1), and a buffer (24) and a buffer tube (25) are arranged on the liquid-phase heat source inlet (23).

5. The graphite heat exchanger of claim 4, wherein: buffer flanges (26) are arranged at two ends of the buffer (24), and a liquid discharge valve (27) is arranged at the lower end of the buffer (24).

6. The graphite heat exchanger of claim 5, wherein: a liquid inlet cavity (28), a buffer cavity (29) and a liquid discharge cavity (31) are formed in the buffer (24), one end of the liquid inlet cavity (28) is communicated with the lower end of the buffer cavity (29), and a non-return assembly is arranged in the buffer cavity (29); the upper end of the buffer cavity (29) is communicated with one end of the liquid draining cavity (31).

7. The graphite heat exchanger of claim 6, wherein: the non-return assembly comprises a piston (30), a movable rod (33) and a limiting end head (34), wherein the limiting end head (34) is arranged on the outer side of the upper end of the buffer (24), and the movable rod (33) is movably arranged in the buffer cavity (29); wherein, movable rod (33) bottom is equipped with piston (30), and movable rod (33) top movable mounting is inside spacing end (34), and movable rod (33) cover compression spring (32) on the part between piston (30) and buffer chamber (29) inner wall.