Bundled sleeve heat exchanger

Abstract

The utility model belongs to the technical field of heat exchangers, and particularly discloses a bundling type double-pipe heat exchanger which comprises an outer pipe, an inner pipe, a left pipe box, a baffle plate, a right pipe plate and a right pipe box, the right end of the left pipe box is connected with the left pipe plate, the right end of the left pipe plate is connected with a shell ring, and the right end of the shell ring is connected with the inner pipe plate. Connection is convenient, and rapid assembly can be achieved; the left end of the outer tube penetrates through the inner tube plate and is communicated with the shell ring, and the right end of the outer tube penetrates through the right tube plate and is communicated with the right tube box; a shell pass inlet and a shell pass outlet are formed in two side walls of the shell section; the inner pipe penetrates through the outer pipe, and the two ends of the inner pipe penetrate through the outer pipe, the right pipe plate, the baffle plate, the inner pipe plate and the left pipe plate and are communicated and connected to the left pipe box; a tube pass inlet and a tube pass outlet are formed in the side walls of the two sides of the left tube box; and double channels are independently controlled, so that the heat exchange efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to heat exchanger technical field, concretely relates to a cluster type double pipe heat exchanger. BACKGROUND

[0002] The double pipe heat exchanger is connected with two different standard pipes to form the concentric double pipe, the outside is called shell pass, and the inside is called pipe pass. Two different media can flow reversely (or in the same direction) in the shell pass and the pipe pass to achieve the heat exchange effect. This heat exchanger belongs to the pure counter flow type heat exchanger, so the heat transfer efficiency is high. However, the structure of the double pipe heat exchanger is not compact as a whole because of the design of multiple layers and even multiple groups of parallel or series structure according to the heat exchange load. Therefore, a new type of heat exchanger is needed in the market, which is compact and has the advantages of the double pipe heat exchanger. SUMMARY

[0003] In view of the problem that the structure compactness and heat exchange efficiency of the double pipe heat exchanger in the prior art need to be improved, a cluster type double pipe heat exchanger is provided. The utility model provides the following technical scheme:

[0004] A cluster type double pipe heat exchanger, comprising an outer pipe, an inner pipe, a left pipe box, a baffle, a right pipe plate and a right pipe box, the right end of the left pipe box is connected with the left pipe plate, the right end of the left pipe plate is connected with a cylinder section, and the right end of the cylinder section is connected with an inner pipe plate;

[0005] The left end of the outer pipe is connected with the cylinder section in communication, and the right end of the outer pipe passes through the right pipe plate and is connected with the right pipe box in communication; the two side walls of the cylinder section are provided with a shell pass inlet and a shell pass outlet;

[0006] The inner pipe is arranged through the outer pipe, and the two ends of the inner pipe pass through the outer pipe, the right pipe plate, the baffle, the inner pipe plate and the left pipe plate and are connected with the left pipe box in communication; the two side walls of the left pipe box are provided with a pipe pass inlet and a pipe pass outlet.

[0007] Preferably, the inner pipe is U-shaped, and the opening faces left.

[0008] Preferably, the outlet of the inner pipe is located on the upper side of the inlet, and the pipe pass outlet and the pipe pass inlet are located on the upper side and the lower side of the left pipe box respectively.

[0009] Preferably, the shell pass inlet and the pipe pass outlet are located on the upper side and the lower side of the pipe section respectively.

[0010] Preferably, the inner pipe is sleeved with multiple groups from inside to outside, and the distance between the two ends of the outer inner pipe is greater than that between the two ends of the inner inner pipe.

[0011] Preferably, the multiple inner pipes of the same specification are arranged horizontally and equally spaced according to the distance between the two ends of the inner pipe.

[0012] Preferably, a pull rod is installed on the inner tube plate, the pull rod is sleeved with a distance tube, the left end of the pull rod is connected to the inner tube plate, the pull rod passes through N baffle plates to the right, the distance tube passes through N-1 baffle plates to the right, the right end of the distance tube abuts against the left side wall of the rightmost baffle plate, the right end of the pull rod extends out of the rightmost baffle plate, and the right end of the pull rod is threadedly connected with a nut.

[0013] Preferably, the left tube box and the left tube plate are connected through fasteners, and the right tube box and the right tube plate are connected through fasteners.

[0014] Preferably, the outer side of the inner tube is fixedly connected with at least two positioning blocks.

[0015] Preferably, the positioning blocks are arranged at the outer side of the inner tube in a circumferential direction and at equal intervals.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. Compact structure, independent control of double channels, and improved heat exchange efficiency.

[0018] 2. The circumferential positioning blocks arranged at the outer side of the inner tube ensure the concentricity of the multilayer sleeve.

[0019] 3. The independently designed shell-side and tube-side double channels, combined with the pull rod and the distance tube, realize efficient counterflow heat exchange of the medium, and ensure the structural stability and load resistance. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 is the overall structure schematic view of the utility model;

[0021] Fig. 2 is the sectional structure schematic view of the utility model;

[0022] Fig. 3 is the mounting structure schematic view of the positioning block;

[0023] In the drawings, 1 is a left tube box, 2 is a left tube plate, 3 is a cylinder section, 4 is an inner tube plate, 5 is a pull rod, 6 is a distance tube, 7 is a baffle plate, 8 is a nut, 9 is a right tube plate, 10 is a fastener, 11 is a right tube box, 12 is an outer tube, 13 is an inner tube, 14 is a support, and 15 is a positioning block. DETAILED DESCRIPTION

[0024] The direction words mentioned in the following embodiments, such as "up", "down", "left" and "right", are only the directions of the drawings, and therefore, the direction words are used for illustration but not for limiting the utility model.

[0025] For example, Figs. 1-3As shown, a bundled shell and tube heat exchanger comprises an outer tube 12, an inner tube 13, a left tube box 1, a baffle 7, a right tube plate 9 and a right tube box 11, the right end of the left tube box 1 is connected with the left tube plate 2, the right end of the left tube plate 2 is connected with the cylinder section 3, and the right end of the cylinder section 3 is connected with the inner tube plate 4; it is convenient to connect, can realize rapid assembly, and can reduce the risk of medium leakage.

[0026] The left end of the outer tube 12 is connected with the cylinder section 3 through the inner tube plate 4, and the right end of the outer tube 12 is connected with the right tube box 11 through the right tube plate 9; the shell side inlet and the shell side outlet are arranged on the two side walls of the cylinder section 3;

[0027] The inner tube 13 is arranged through the outer tube 12, and the two ends of the inner tube 13 are connected with the left tube box 1 through the outer tube 12, the right tube plate 9, the baffle 7, the inner tube plate 4 and the left tube plate 2; the tube side inlet and the tube side outlet are arranged on the two side walls of the left tube box 1; the structure is compact, and the double channels are independently controlled, so that the heat exchange efficiency can be improved.

[0028] Specifically, the inner tube 13 is U-shaped, the opening of the inner tube 13 faces left, the structure is simple, easy to produce, and the U-shaped bending structure effectively absorbs thermal expansion stress, and at the same time, the medium residence time is prolonged to strengthen heat transfer.

[0029] Specifically, the outlet of the inner tube 13 is located on the upper side of the inlet of the inner tube 13, and the tube side outlet and the tube side inlet are located on the upper side and the lower side of the left tube box 1 respectively, and the heat exchange medium can move from the left lower side to the right and flow out from the left upper side.

[0030] Specifically, the shell side inlet and the tube side outlet are located on the upper side and the lower side of the tube section respectively, and the heat exchange medium can move from the left upper side to the right and flow out from the left lower side.

[0031] Specifically, the inner tube 13 is sleeved with multiple groups from inside to outside, and the distance between the two ends of the outer inner tube 13 is greater than the distance between the two ends of the inner inner tube 13; specifically, three layers are sleeved, and 4, 3 and 2 inner tubes 13 are arranged from inside to outside, so that the structural compactness is improved, and the flow dead zone is reduced.

[0032] Specifically, the specifications are divided according to the distance between the two ends of the inner tube 13, and multiple inner tubes 13 of the same specification are arranged horizontally and equally spaced, so that the structural compactness is further improved.

[0033] Specifically, the inner tube plate 4 is provided with a pull rod 5, the pull rod 5 is sleeved with a fixed distance tube 6, the left end of the pull rod 5 is connected with the inner tube plate 4, the pull rod 5 passes through four baffles 7 to the right, the fixed distance tube 6 passes through three baffles 7 to the right, the right end of the fixed distance tube 6 abuts against the left side wall of the rightmost baffle 7, the right end of the pull rod 5 protrudes out of the rightmost baffle 7, the right end of the pull rod 5 is threadedly connected with a nut 8, and multiple groups of the pull rod 5, the fixed distance tube 6 and the nut 8 are arranged to fix the baffle 7 and ensure the overall rigidity of the baffle 7 group.

[0034] Specifically, the left tube box 1 and the left tube plate 2, and the right tube box 11 and the right tube plate 9 are connected by fasteners 10, the fasteners 10 include multiple groups of fastening bolts and fastening nuts, and sealing rings are connected between the abutting surfaces to enhance the sealing reliability and adapt to the material deformation compensation under high-temperature working conditions.

[0035] Specifically, three positioning blocks 15 are fixedly connected to the outer side of the inner tube 13 in a circumferential direction, the positioning blocks 15 prevent deflection and ensure the concentricity of the sleeve tube and maintain the optimal annular flow passage gap.

[0036] Specifically, the baffles 7 are grouped two by two, the two baffles 7 in the same group are spaced apart by a small distance, and the baffles 7 in different groups are spaced apart by a large distance. In this embodiment, two groups are provided, and each group is connected with a support 14 on the lower side to provide support, thereby dispersing the structural load and providing stable support.

Claims

1. A bundled tube heat exchanger, characterized by, It comprises an outer tube (12), an inner tube (13), a left tube box (1), a baffle (7), a right tube plate (9) and a right tube box (11), the right end of the left tube box (1) is connected with a left tube plate (2), the right end of the left tube plate (2) is connected with a cylinder joint (3), the right end of the cylinder joint (3) is connected with an inner tube plate (4); the left end of the outer tube (12) is connected with the cylinder joint (3) through the inner tube plate (4), the right end of the outer tube (12) passes through the right tube plate (9) and is connected with the right tube box (11), the both sides of the cylinder joint (3) are provided with a shell inlet and a shell outlet; the inner tube (13) passes through the outer tube (12), the right tube plate (9), the baffle (7), the inner tube plate (4) and the left tube plate (2) and is connected with the left tube box (1), the both sides of the left tube box (1) are provided with a tube inlet and a tube outlet.

2. The bundled tube heat exchanger of claim 1, wherein, The inner tube (13) is U-shaped, and the opening faces left.

3. The bundled tube heat exchanger of claim 1, wherein, The outlet of the inner tube (13) is located on the upper side of the inlet, and the tube outlet and the tube inlet are located on the upper side and the lower side of the left tube box (1) respectively.

4. The bundled tube heat exchanger according to claim 1 or 3, characterized by The shell inlet and the tube outlet are located on the upper side and the lower side of the tube joint respectively.

5. The bundled tube heat exchanger of claim 1, wherein, The inner tube (13) is sleeved with multiple groups from inside to outside, and the distance between the two ends of the outer inner tube (13) is greater than that between the two ends of the inner inner tube (13).

6. The bundled tube heat exchanger of claim 5, wherein, According to the distance between the two ends of the inner tube (13), multiple inner tubes (13) of the same specification are arranged horizontally and equally spaced.

7. The bundled tube heat exchanger of claim 1, wherein, The inner tube plate (4) is provided with a pull rod (5), the pull rod (5) is sleeved with a distance tube (6), the left end of the pull rod (5) is connected with the inner tube plate (4), the pull rod (5) passes through N baffles (7) to the right, the distance tube (6) passes through N-1 baffles (7) to the right, the right end of the distance tube (6) abuts against the left side wall of the rightmost baffle (7), the right end of the pull rod (5) protrudes from the rightmost baffle (7), and the right end of the pull rod (5) is threadedly connected with a nut (8).

8. The bundled tube heat exchanger of claim 1, wherein, The left tube box (1) and the left tube plate (2) are connected through a fastener (10), and the right tube box (11) and the right tube plate (9) are connected through a fastener (10), the fastener (10) comprises multiple groups of fastening bolts and fastening nuts.

9. The bundled tube heat exchanger of claim 1, wherein, The outer side of the inner tube (13) is fixedly connected with at least two positioning blocks (15).

10. The bundled tube heat exchanger of claim 9, wherein, Each positioning block (15) is arranged on the outer side of the inner tube (13) in a circumferential direction and equally spaced.

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