CN219798045U - Solid-liquid heat exchanger - Google Patents

Abstract

The utility model belongs to the technical field of heat exchangers and discloses a solid-liquid heat exchanger, which comprises a tube box, wherein a plurality of groups of heat transfer tube bundles are uniformly distributed in the tube box, each heat transfer tube bundle consists of an inner tube and an outer tube, the outer tubes are coaxially sleeved on the periphery of the inner tube, sealing plates are connected between the inner sides of two ends of the outer tubes and the inner tubes in a sealing manner, phase change materials are filled in cavities between the outer tubes and the inner tubes, tube plates are sleeved at two ends of the inner tubes, and the outer sides of the tube plates are connected to one end of the inner side of the tube box through annular brackets.

Description

Solid-liquid heat exchanger

Technical Field

The utility model relates to the technical field of heat exchangers, in particular to a solid-liquid heat exchanger.

Background

At present, a shell-and-tube heat exchanger consists of a shell, a heat transfer tube bundle, a tube plate, a baffle plate, a tube box and other parts, and the existing solid-liquid heat exchanger is a tube bundle solid-liquid phase energy storage heat exchanger provided by a patent CN215766655U, and energy storage heat exchange is realized by arranging a phase change material in a PCM tube.

Therefore, the utility model designs a solid-liquid heat exchanger to solve the problems.

Disclosure of Invention

(one) solving the technical problems

In order to solve the problems in the prior art, the utility model provides the solid-liquid heat exchanger which has the advantages of large heat transfer area, uniform heat transfer and high heat transfer efficiency, and by arranging the double-layer heat transfer tube bundles, the flow of heat exchange fluid in the tube box is increased, and the heat transfer area between the heat exchange fluid and the phase change material is greatly increased, so that the heat transfer efficiency in the heat storage process is greatly improved.

(II) technical scheme

In order to achieve the above purpose, the main technical scheme adopted by the utility model comprises the following steps:

the utility model provides a solid-liquid heat exchanger, includes the pipe case, the inside evenly distributed of pipe case has multiunit heat transfer tube bank, the heat transfer tube bank comprises inner tube and outer tube, the outer tube is with the axle sleeve to be established in the periphery of inner tube, sealing connection has the shutoff board between the inboard and the inner tube in both ends of outer tube, just the cavity intussuseption between outer tube and the inner tube is filled with phase change material, the tube sheet has all been cup jointed at the both ends of inner tube, the outside of tube sheet passes through annular bracket connection in the inboard one end of pipe case, there is the tube cap at the both ends of pipe case all through flange joint, two the outside fixed intercommunication of tube cap has medium advance pipe and medium exit tube.

Preferably, the two ends of the inner tube extend to the outer sides of the two ends of the outer tube, and the inner tube, the outer tube and the plugging plate are made of materials with good heat conduction performance.

Preferably, the surface of the tube plate is provided with a fixing hole matched with the outer diameter of the inner tube, the side surface of the tube plate, which is positioned on the tube box, is uniformly connected with a fixing sleeve matched with the outer diameter of the outer tube, and the fixing sleeve is coaxially arranged at the outer side of the fixing hole.

Preferably, the inner side of the pipe box is uniformly coated with a heat insulation layer, and the outer side of the pipe box is coated with a protective layer.

Preferably, the tube cover is in a spherical structure, and the outer side surfaces of the tube plate and the annular support and the end surfaces of the inner tube and the tube box are positioned at one end of the inner side on the same plane.

Preferably, the end face of the pipe cover is connected with a sealing ring, and the pipe cover is in sealing connection with the end part of the pipe box through the sealing ring.

(III) beneficial effects

The utility model provides a solid-liquid heat exchanger. The beneficial effects are as follows:

(1) The double-layer heat transfer tube bundles are arranged, and the phase change materials are filled between the inner tube and the outer tube, so that when the heat storage device is used, heat exchange fluid can be distributed on the inner side of the inner tube and the outer side of the outer tube, the flow rate of the heat exchange fluid in the tube box is increased, the heat transfer area between the heat exchange fluid and the phase change materials is greatly increased, and the heat transfer efficiency in the heat storage process is greatly improved;

(2) The heat-exchange box has the advantages of large heat-transfer area, uniform heat transfer and high heat-transfer efficiency, the heat loss of heat-exchange fluid can be reduced through the heat-insulating layer, the heat-exchange efficiency inside the box is ensured, the outside of the box is protected through the protective layer, and damage in the carrying process is prevented.

Drawings

FIG. 1 is a schematic overall structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of an end of a heat transfer tube bundle of the present utility model;

FIG. 3 is a schematic cross-sectional view of the tube box of the present utility model in the circumferential direction;

FIG. 4 is a schematic view of the structure of the end of the tube box of the present utility model;

FIG. 5 is a schematic side view of the tube sheet of the present utility model positioned within a tube cassette.

In the figure: 1. a tube box; 11. a thermal insulation layer; 12. a protective layer; 2. a heat transfer tube bundle; 21. an inner tube; 22. an outer tube; 23. a plugging plate; 24. a phase change material; 3. a tube sheet; 31. a fixing hole; 32. a fixed sleeve; 4. an annular bracket; 5. a tube cover; 6. a medium inlet pipe; 7. and a medium outlet pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples:

as shown in fig. 1-5, the utility model provides a solid-liquid heat exchanger, which comprises a tube box 1, wherein a plurality of groups of heat transfer tube bundles 2 are uniformly distributed in the tube box 1, the heat transfer tube bundles 2 are composed of an inner tube 21 and an outer tube 22, the outer tube 22 is coaxially sleeved on the periphery of the inner tube 21, a sealing plate 23 is connected between the inner sides of the two ends of the outer tube 22 and the inner tube 21 in a sealing way, the tightness of the connection between the outer tube 22 and the inner tube 21 is ensured, and a phase change material 24 is filled in a cavity between the outer tube 22 and the inner tube 21, so that the inner side and the outer side of the heat transfer tube bundles 2 can exchange heat with the phase change material 24, the two ends of the inner tube 21 are sleeved with tube plates 3, the outer sides of the tube plates 3 are connected to one end of the inner side of the tube box 1 through annular supports 4, heat transfer media can pass through the space between the annular supports 4 and the tube box 1 conveniently, the two ends of the tube box 1 are connected with tube covers 5 through flanges, medium inlet tubes 6 and medium 7 are fixedly communicated with the outer sides of the two tube covers 5, the heat transfer fluid can enter the tube box 1 and can be filled in the inner side and the outer side of the tube box 2 through the medium inlet tube 6 and the outer side 24, the inner side and the inner side of the medium exchange material is fully discharged through the medium and the medium outlet 24.

In this embodiment: when in use, heat exchange fluid is introduced into the tube box 1 from the medium inlet tube 6, when in cold charge, cold fluid with the temperature lower than the solidifying point of the phase change material 24 is subjected to heat exchange through the tube wall of the heat transfer tube bundle 2, namely, the inner wall of the inner tube 21 and the outer wall of the outer tube 22, so that the phase change material 24 is continuously solidified, and cold energy is stored in the phase change material 24 in the form of latent heat, wherein the phase change material 24 can be one of inorganic PCM, organic PCM and composite PCM, and when in cold discharge, the phase change material 24 is continuously melted by hot fluid with the temperature higher than the melting point of the phase change material 24 in the inner side and the outer side of the heat transfer tube bundle 2, and the accumulated cold energy is discharged.

In a preferred embodiment, as shown in fig. 1, 2 and 4, two ends of the inner tube 21 extend to the outer sides of two ends of the outer tube 22, so that the heat transfer tube bundle 2 is conveniently connected to the tube plate 3 in a plugging manner through the end of the inner tube 21, and the inner tube 21, the outer tube 22 and the plugging plate 23 are made of materials with good heat conduction performance, so that a good heat exchange effect is achieved.

In a preferred embodiment, as shown in fig. 1 and 5, the surface of the tube plate 3 is provided with a fixing hole 31 matched with the outer diameter of the inner tube 21, the side surface of the tube plate 3, which is located on the tube box 1, is uniformly connected with a fixing sleeve 32 matched with the outer diameter of the outer tube 22, and the fixing sleeve 32 is coaxially arranged outside the fixing hole 31, so that the end part of the inner tube 21 can be installed on the tube plate 3 through the fixing hole 31, and meanwhile, the end part of the outer tube 22 can be installed in the fixing sleeve 32, thus the heat transfer tube bundle 2 can be firmly fixed on the tube plate 3, and the stability of the heat transfer tube bundle 2 in the tube box 1 is ensured.

In a preferred embodiment, as shown in fig. 3 and 4, the inner side of the tube box 1 is uniformly coated with a heat insulation layer 11, and the outer side of the tube box 1 is coated with a protective layer 12, so that heat loss of heat exchange fluid can be reduced through the heat insulation layer 11, the heat exchange efficiency inside the tube box 1 is ensured, and the outer part of the tube box 1 is protected through the protective layer 12 to prevent damage in the process of carrying.

In a preferred embodiment, as shown in fig. 1 and 4, the tube cover 5 is in a spherical structure, the outer side surfaces of the tube plate 3 and the annular support 4 and the inner side ends of the inner tube 21 and the tube box 1 are positioned on the same plane, so that a certain cavity is formed at two ends of the tube box 1, heat exchange fluid enters the tube cover 5 through the medium inlet tube 6, then part of the heat exchange fluid can directly enter the inner tube 21, and part of the heat exchange fluid enters the tube box 1 through the annular support 4 and fills the gap outside the outer tube 22, thereby increasing the heat transfer area between the heat exchange fluid and the phase change material 24, and heat exchange is performed on the inner side and the outer side of the heat transfer tube bundle 2, and improving the heat transfer efficiency of the heat storage process.

In a preferred embodiment, as shown in fig. 1, a sealing ring is connected to the end surface of the tube cover 5, and the tube cover 5 is in sealing connection with the end of the tube box 1 through the sealing ring, so that the tube cover 5 and the tube box 1 are in sealing connection through the sealing ring, and leakage of heat exchange fluid at the connection position is prevented.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. The utility model provides a solid-liquid heat exchanger which characterized in that: including tube case (1), the inside evenly distributed of tube case (1) has multiunit heat transfer tube bank (2), heat transfer tube bank (2) are constituteed by inner tube (21) and outer tube (22), the periphery at inner tube (21) is established to outer tube (22) coaxial cover, sealing connection has shutoff board (23) between the inboard and inner tube (21) in both ends of outer tube (22), just the cavity intussuseption between outer tube (22) and inner tube (21) is filled with phase change material (24), tube sheet (3) have all been cup jointed at the both ends of inner tube (21), the inboard one end at tube case (1) is passed through annular support (4) in the outside of tube sheet (3), the both ends of tube case (1) all have tube cap (5) through flange joint, two the outside fixed intercommunication of tube cap (5) have medium advance pipe (6) and medium exit tube (7).

2. A solid liquid heat exchanger as defined in claim 1 wherein: the two ends of the inner tube (21) extend to the outer sides of the two ends of the outer tube (22), and the inner tube (21), the outer tube (22) and the plugging plate (23) are made of materials with good heat conduction performance.

3. A solid liquid heat exchanger as defined in claim 2 wherein: the surface of tube sheet (3) offer with interior tube (21) external diameter assorted fixed orifices (31), tube sheet (3) lie in the side of tube case (1) evenly be connected with outer tube (22) external diameter assorted fixed cover (32), just fixed cover (32) coaxial setting is in the outside of fixed orifices (31).

4. A solid liquid heat exchanger as defined in claim 1 wherein: the inner side of the pipe box (1) is uniformly coated with a heat insulation layer (11), and the outer side of the pipe box (1) is coated with a protective layer (12).

5. A solid liquid heat exchanger as defined in claim 1 wherein: the pipe cover (5) is of a spherical structure, and the outer side surfaces of the pipe plate (3) and the annular support (4) and the end surfaces of the inner pipe (21) and the pipe box (1) are positioned at one end of the inner side on the same plane.

6. A solid liquid heat exchanger as defined in claim 5 wherein: the end face of the pipe cover (5) is connected with a sealing ring, and the pipe cover (5) is connected with the end part of the pipe box (1) in a sealing way through the sealing ring.