CN222895574U - Multi-channel tube cooler - Google Patents

Abstract

The utility model discloses a multi-channel type tube nest cooler which comprises a heat exchange unit, wherein the heat exchange unit comprises an outer tube, an inner tube and a spiral tube, the outer tube is sleeved outside the inner tube, the spiral tube is arranged in radial gaps of the outer tube and the inner tube and is respectively and correspondingly attached to the inner wall surface of the inner tube and the outer wall surface of the outer tube, the radial gaps of the outer tube and the inner tube are divided into a first channel and a second channel which are spiral, the traditional cooling medium channel is changed into the first channel and the second channel which are spiral and mutually wound, the actual flow stroke of the cooling medium is effectively prolonged, the effective heat exchange area of the cooling medium is increased, and the cooling effect is improved.

Description

Multi-channel type tube array cooler

Technical Field

The utility model belongs to the technical field of coolers, and relates to a multi-channel type tube array cooler.

Background

A chiller is a type of heat exchange device, which is a device used to reduce the temperature of a fluid. It is widely used in industry, commerce and daily life. The working principle of the cooler is to utilize a cooling medium (such as water or air) to absorb the heat of a cooled fluid (such as oil, gas or liquid), so as to achieve the purpose of reducing the temperature. Common forms of coolers are shell and tube coolers, plate coolers and air-cooled coolers. Wherein, the shell and tube cooler is widely used in equipment in the industries of metallurgy, chemical industry, energy sources, food and the like, and has important position. The existing shell and tube heat exchanger generally has a complex structure, and the cooling flow channels are mostly in a straight line form, although part of the cooling flow channels are additionally provided with baffle plates and other structures to prolong the flow paths, the whole flow direction of the cooling medium is still in a straight line form, so that the flow paths of the cooling medium are too short, and the cooling effect is insufficient.

In order to solve the above problems, a cooler with a simpler structure and longer cooling flow channel is needed to improve the cooling and heat exchanging effects.

Disclosure of utility model

In view of the above, the utility model provides a multi-channel type tube array cooler, wherein the conventional cooling medium channels are changed into a first channel and a second channel which are spirally wound with each other by the arrangement of a spiral tube, so that the actual flow stroke of the cooling medium is effectively prolonged, the effective heat exchange area of the cooling medium is increased, the cooling effect is improved, and meanwhile, the whole cooler is formed by connecting a plurality of independent heat exchange units, and the structure is simpler.

The utility model discloses a multi-channel type tube nest cooler which comprises a heat exchange unit, wherein the heat exchange unit comprises an outer tube, an inner tube and a spiral tube, the outer tube is sleeved outside the inner tube, the spiral tube is arranged in a radial gap between the outer tube and the inner tube and is respectively and correspondingly attached to the inner wall surface of the inner tube and the outer wall surface of the outer tube, and the spiral tube separates the radial gap between the outer tube and the inner tube into a first channel and a second channel which are spiral.

Further, the spiral tube has a hollow passage, and the hollow passage of the spiral tube forms a third flow passage.

Further, the heat exchange unit is provided with a plurality of connecting elbows, and a plurality of inner pipes corresponding to the heat exchange units are sequentially connected end to end through the connecting elbows, so that a plurality of inner pipes form an inner pipe line with a serpentine bending structure.

Further, the heat exchange device further comprises a communicating pipe, wherein the outer pipes corresponding to any adjacent heat exchange units are communicated through the communicating pipe, so that a plurality of the outer pipes form an outer pipe row which is parallel to each other and communicated with each other.

Further, the outer tube also comprises sealing heads, and sealing heads are arranged at two axial ends of any outer tube.

Further, the first inlet is formed in the head end of the inner tube row, and the first outlet is formed in the tail end of the inner tube row.

Further, the outer tube row is provided with a second inlet and a second outlet, the second inlet is arranged near the position of the first outlet, and the second outlet is arranged near the position of the first inlet.

Further, the outer tube connecting device further comprises a plurality of support plates, wherein the support plates are arranged along the axial direction of the outer tube, and any two adjacent outer tubes are connected through the support plates.

Further, the communicating pipe is provided at a position near the axial end of the outer tube.

The utility model has the beneficial effects that:

The utility model discloses a multi-channel type tube nest cooler, which changes the traditional cooling medium channel into a first channel and a second channel which are spirally and mutually wound, wherein the spiral tube is of a hollow structure, a third channel is formed, three channels which are mutually and spirally wound effectively prolong the actual flow stroke of cooling medium, increase the effective heat exchange area of the cooling medium and improve the cooling effect, and meanwhile, the whole cooler is formed by connecting a plurality of independent heat exchange units, has simpler integral structure, can combine and arrange the heat exchange units according to the actual cooling requirement and has wider application range.

The multi-channel type tube nest cooler has the advantages of simple and reliable integral structure and excellent cooling and heat exchanging effects.

Drawings

FIG. 1 is an isometric view of the present utility model;

FIG. 2 is a schematic diagram of a front view structure of the present utility model;

FIG. 3 is a schematic view of a heat exchange unit according to the present utility model;

fig. 4 is a partial enlarged view at a in fig. 2.

Detailed Description

It should be noted that, in the description of the present specification, the terms "upper," "lower," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In this embodiment, the first and the last and the front and the back are based on the sequence of the medium flow, that is, the first medium flows before the first medium flows, which is understood by those skilled in the art and is not described herein.

As shown in fig. 1-4, the utility model discloses a multi-flow channel type tube nest cooler, which comprises a heat exchange unit 1, wherein the heat exchange unit 1 comprises an outer tube 102, an inner tube 101 and a spiral tube 103, the outer tube 102 is sleeved on the inner tube 101, the spiral tube 103 is arranged in a radial gap between the outer tube 102 and the inner tube 101 and is respectively corresponding to the inner wall surface of the inner tube 101 and the outer wall surface of the outer tube 102 to be attached, and the radial gap between the outer tube 102 and the inner tube 101 is divided into a first flow channel and a second flow channel which are in spiral shapes by the spiral tube 103. In this embodiment, the spiral tube 103 has a hollow passage, and the hollow passage of the spiral tube 103 forms a third flow passage. As shown in the figure, in the present embodiment, the inner tube 101 is a hollow tube, and the fluid to be cooled flows through the inner tube 101, and when the present embodiment is applied to a compressor, the compressed gas of the compressor flows through the inner tube 101. The provision of the spiral pipe 103 has the function of supporting the outer pipe 102 in addition to separating the flow passages, so that the outer pipe 102 and the inner pipe 101 form a connection. The first flow channel, the second flow channel and the third flow channel are all cooling mediums, the contact area between the first flow channel and the inner pipe 101 is large, the first flow channel and the second flow channel directly cool the cooled fluid, the contact area between the third flow channel and the inner pipe 101 is small because of separating the two flow channels, but the contact area between the third flow channel and the first flow channel and the contact area between the third flow channel and the second flow channel are large, the cooling mediums in the third flow channel are mainly used for heat exchange with the first flow channel and the second flow channel, and the cooling heat exchange effect of the cooler is indirectly improved. The utility model discloses a multi-channel type tube nest cooler, wherein a traditional cooling medium channel is changed into a first channel and a second channel which are spirally and mutually wound by a spiral tube 103, the spiral tube 103 is of a hollow structure, a third channel is formed, the three mutually spirally and mutually wound channels effectively prolong the actual flow stroke of the cooling medium, the effective heat exchange area of the cooling medium is increased, and the cooling effect is improved.

In this embodiment, the heat exchange unit further includes a connection elbow 6, where the heat exchange unit 1 is provided with a plurality of inner pipes 101 corresponding to the heat exchange units 1, and the inner pipes 101 are sequentially connected end to end through the connection elbow 6, so that the plurality of inner pipes 101 form an inner pipe string with a serpentine bending structure. In this embodiment, a first inlet 2 is provided at the head end of the inner tube row, and a first outlet 3 is provided at the tail end of the inner tube row. As shown in the figure, the connecting elbow 6 has a semicircular tubular structure, and the connecting elbow 6 connects and communicates the inner tubes 101 corresponding to the two adjacent heat exchange units 1, thereby having traveled a serpentine inner tube row. Two ring connection surface neck flat welding flanges with the same structural size are arranged at the first section and the tail end of the whole tube array and serve as inlets and outlets of fluid to be cooled, namely a first inlet and a first outlet.

In this embodiment, the heat exchange unit further includes a communicating pipe 7, and the outer pipes 102 corresponding to any adjacent heat exchange units 1 are communicated through the communicating pipe 7, so that a plurality of the outer pipes 102 form an outer pipe row parallel to each other and communicated with each other. The communication pipe 7 is provided at a position near the axial end of the outer pipe 102. In this embodiment, the device further includes a sealing head 9, and sealing heads 9 are disposed at two axial ends of any one of the outer tubes 102. In this embodiment, the outer tube row is provided with a second inlet 4 and a second outlet 5, the second inlet 4 is disposed near the first outlet 3, and the second outlet 5 is disposed near the first inlet 2. The first flow channel and the second flow channel are closed by the arrangement of the seal head 9 and are matched with the communicating pipe 7, so that the first flow channel and the second flow channel of two adjacent heat exchange units 1 can only be communicated through the communicating pipe 7, cooling mediums in the first flow channel, the second flow channel and the third flow channel are converged before the communicating pipe 7, and then flow into the next heat exchange unit 1 through the communicating pipe 7 and then are further distributed to the three flow channels. The outer tube row in this embodiment is also serpentine, and the communicating tube 7 connects and communicates the end of the outer tube 102 with the head end of the outer tube 102 of the next heat exchange unit 1. In this embodiment, the second inlet 4 is disposed near the first outlet 3, and the second outlet 5 is disposed near the first inlet 2, so that the flow direction of the cooling medium is opposite to the flow direction of the fluid to be cooled, and the compressed gas and the cooling water form opposite flows, so that heat exchange is fully performed, and a cooling effect is achieved. In this embodiment, the second inlet and the second outlet are two sets of flange with protruding surface and neck flat welding with same structural dimensions, and in this embodiment, in order to facilitate the flow of the cooling medium in the third flow channel, when the spiral pipe is arranged, the inlet and the outlet of the spiral pipe are correspondingly aligned with the communicating pipe, and the second inlet and the second outlet are correspondingly aligned with the communicating pipe.

In this embodiment, the device further includes a support plate 8, where a plurality of support plates 8 are disposed along an axial direction of the outer tube 102, and any two adjacent outer tubes 102 are connected through the support plate 8. As shown in the drawing, the support plate 8 in the present embodiment connects two adjacent outer tubes 102 to provide support, and the support plate 8 in the present embodiment is provided in the middle of the outer tubes 102 in the axial direction and at the end portion where the communication tube 7 is not provided, to promote structural stability of the entire cooler.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims (9)

1. The multi-flow channel type tube nest cooler is characterized by comprising a heat exchange unit, wherein the heat exchange unit comprises an outer tube, an inner tube and a spiral tube, the outer tube is sleeved outside the inner tube, the spiral tube is arranged in a radial gap between the outer tube and the inner tube and is respectively and correspondingly attached to the inner wall surface of the inner tube and the outer wall surface of the outer tube, and the spiral tube separates the radial gap between the outer tube and the inner tube into a first flow channel and a second flow channel which are spiral.

2. The multi-channel type tube array cooler as set forth in claim 1 wherein the spiral tube has a hollow passage, the hollow passage of the spiral tube forming a third channel.

3. The multi-channel type tube-in-tube cooler of claim 1, further comprising a plurality of connecting elbows, wherein the plurality of heat exchange units are arranged, and the inner tubes corresponding to the plurality of heat exchange units are sequentially connected end to end through the connecting elbows, so that the plurality of inner tubes form an inner tube row with a serpentine bending structure.

4. The multi-channel type tube-in-tube cooler as set forth in claim 3, further comprising a communicating tube through which the respective outer tubes of any adjacent heat exchange units are communicated such that a plurality of said outer tubes constitute an outer tube row which is parallel to each other and communicated with each other.

5. The multi-channel type tube-in-tube cooler of claim 1, further comprising a seal head, wherein the seal head is arranged at two axial ends of any one of the outer tubes.

6. The multi-channel type tube array cooler of claim 4, wherein a first inlet is formed in the head end of the inner tube array, and a first outlet is formed in the tail end of the inner tube array.

7. The multi-channel type tube-in-tube cooler as set forth in claim 6, wherein said outer tube array is provided with a second inlet and a second outlet, said second inlet being provided near said first outlet and said second outlet being provided near said first inlet.

8. The multi-channel type tube-in-tube cooler according to claim 1, further comprising a plurality of support plates, wherein a plurality of support plates are arranged along the axial direction of the outer tubes, and any adjacent two of the outer tubes are connected through the support plates.

9. The multi-flow path type tube array cooler according to claim 4, wherein the communication pipe is provided at a position near an axial end of the outer pipe.