CN218238498U

CN218238498U - Plate type reinforced heat exchange box structure

Info

Publication number: CN218238498U
Application number: CN202222435360.7U
Authority: CN
Inventors: 蔡明坤; 曹佳鸣; 侯超; 奚佳君
Original assignee: Shanghai Boiler Works Co Ltd
Current assignee: Shanghai Boiler Works Co Ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2023-01-06
Anticipated expiration: 2032-09-14

Abstract

The utility model provides a heat transfer case structure is reinforceed to plate formula relates to heat exchanger technical field, including a plurality of interior runners and a plurality of outer runners, interior runner is formed by two slab amalgamations, and the interval is equipped with a plurality of runner grooves on the slab, and two slab amalgamation slab pairs, runner groove amalgamation in the runner on two slabs supply a gas flow, and two adjacent slabs separate through the strip of paper used for sealing board between to, form outer runner, supply another kind of gas flow, two kinds of gases flow in interior runner and outer runner respectively, realize the heat transfer. The plate is manufactured by adopting continuous production rolling equipment, flow line production can be realized, the manufacturing speed is high, and the manufacturing energy consumption is low; the inner surface and the outer surface of the runner groove are provided with heat exchange corrugations in a pressure equalizing manner, so that the surface convection heat exchange coefficient of the inner runner and the outer runner can be improved; the shape of the inner flow channel is oblate, the distance between the plates is larger, and the change rate of the cross section of the air flow passing through the outer flow channel is smaller than that of the tube box structure of the tube type heat exchanger, so that the resistance of the air flow passing through the inner flow channel and the outer flow channel is reduced.

Description

Plate type reinforced heat exchange box structure

Technical Field

The utility model belongs to the technical field of the heat exchanger, especially, relate to a heat transfer case structure is reinforceed to plate formula.

Background

The cross flow heat exchanger is widely used in a tube box structure of a tubular heat exchanger, and adopts a cross flow mode that one gas longitudinally passes through a tube and the other gas transversely scours the outside of the tube. The tubular heat exchanger is generally heavier, adopts a light pipe mostly and has low heat transfer coefficient. In order to improve the heat transfer effect, methods such as a threaded steel pipe and a turbolator added in the pipe are generally adopted, so that the flow resistance of a medium in the pipe is greatly increased while heat exchange is enhanced, and the effect is limited. The airflow turbulence formed by airflow transversely scouring the pipe outside the pipe is large, the flow resistance is large, the problem can be solved by adopting the pipe with the elliptic section, but the elliptic pipe has high cost, and the popularization and the use of the elliptic pipe are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a heat transfer case structure is reinforceed to plate formula to the not enough that exists among the prior art of solution.

In order to achieve the above purpose, the present invention is implemented by the following technical solutions: a plate type reinforced heat exchange box structure is characterized by comprising a plurality of inner flow channels and a plurality of outer flow channels, wherein the inner flow channels are formed by splicing two plates, a plurality of flow channel grooves are formed in the plates at intervals, the two plates are spliced into plate pairs, the flow channel grooves in the two plates are spliced into the inner flow channels for one gas to circulate, the two adjacent plate pairs are separated by a sealing plate to form the outer flow channels for the other gas to circulate, and the two gases flow in the inner flow channels and the outer flow channels respectively to realize heat exchange.

The plate can be manufactured by preferentially adopting continuous production rolling equipment, flow line production can be realized, the manufacturing speed is high, the manufacturing energy consumption is low, and the mould pressing production can also be adopted, so that the plate is used for replacing the pipe. In the existing tubular heat exchanger, in order to separate steel pipes, intensive drilling needs to be carried out on a channel box sealing plate and a partition plate, so that the manufacturing cost is high.

Furthermore, heat exchange corrugations are uniformly pressed on the inner surface and the outer surface of the runner groove, so that the surface convection heat exchange coefficient of the inner runner and the surface convection heat exchange coefficient of the outer runner can be improved.

The heat exchange corrugations pressed for enhancing heat exchange are also beneficial to improving the local strength of the surface of the runner, can bear the increase of the pressure difference range between the inner runner and the outer runner, is also beneficial to reducing the bulging amplitude of the inner runner during working, and can further increase the bearing range of the gas pressure difference between the inner runner and the outer runner by reducing the length-width ratio of the cross section of the inner runner.

Furthermore, the shape of the runner groove is C-shaped, the C-shaped runner grooves on the two plate sheets are spliced to form the inner runner, and the shape of the inner runner is oblate.

The shape of the inner flow channel in the plate alignment is oblate, the distance between the plates is larger, and the change rate of the cross section of the air flow passing through the outer flow channel is smaller than that of the tube box structure of the tubular heat exchanger, so that the resistance of the air flow passing through the inner flow channel and the outer flow channel is favorably reduced.

Further, the seal strip plate is located between two adjacent plate pairs and located at two ends of the inner flow channel, and the outer flow channel is perpendicular to the direction of the axis of the inner flow channel in the plate pair.

Furthermore, the part between two adjacent runner grooves on the plate is a plane plate, the plane plate is provided with through holes, a plurality of plate pairs are connected through a plate sealing plate, a tensioning rod, a cushion block and a locking nut, the tensioning rod penetrates through the through holes on the plane plate, the cushion block is positioned between the two adjacent plate pairs and sleeved on the tensioning rod, and the locking nut is arranged at two ends of the tensioning rod, so that all the plate pairs are connected into a whole, and a cross flow plate type reinforced heat exchange box structure is formed.

The surface between two adjacent inner flow channels on the plate sheet, namely the spliced plane plate, forms an extended heat exchange fin, which is beneficial to further improving the heat transfer between the gases in the inner flow channels and the outer flow channels, thereby greatly reducing the metal consumption of the heat exchanger.

Furthermore, comb-shaped plates are installed at two ends of the outer flow channel and used for fixing the plate sheets and preventing the plate sheets from shaking.

Has the beneficial effects that:

(1) The utility model provides a heat transfer case structure is reinforceed to plate formula, but the roll-in equipment that the plate can preferentially adopt continuous production makes, can realize the streamlined production, and it is fast to make, makes the energy consumption low, also can adopt mould suppression production to the realization is managed instead of the pipe with the board. In the existing tubular heat exchanger, in order to separate the steel pipes, intensive drilling needs to be performed on the pipe box sealing plate and the partition plate, so that the manufacturing cost is high.

(2) The utility model provides a plate type reinforced heat exchange box structure, wherein heat exchange ripples are pressed on the inner surface and the outer surface of a runner groove, and the surface convection heat exchange coefficients of an inner runner and an outer runner can be improved simultaneously; the surface between two adjacent inner flow channels on the plate sheet, namely the spliced plane plate, forms an extended heat exchange fin, which is beneficial to further improving the heat transfer between the gases in the inner flow channels and the outer flow channels, thereby greatly reducing the metal consumption of the heat exchanger; the heat exchange corrugations pressed for enhancing heat exchange are beneficial to improving the local strength of the surface of the runner, can bear the increase of the pressure difference range between the inner runner and the outer runner, and is also beneficial to reducing the bulging amplitude of the inner runner during working.

(3) The utility model provides a heat transfer case structure is reinforceed to plate formula, the shape of the interior runner of plate centering is the oblate form, and the plate interval is great, and the cross section rate of change that outer runner air current passes through is less than tubular heat exchanger's pipe case structure, therefore does benefit to the resistance that the air current passes through in reducing interior runner and the outer runner.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.

Drawings

FIG. 1 is a schematic view of the construction of two panels joined together to form a panel pair;

FIG. 2 is a schematic structural view of a plate-type reinforced heat exchange box;

FIG. 3 is a cross-sectional view taken at section A of FIG. 2;

reference numerals:

1. a sheet; 1-1, a runner groove; 1-2, heat exchange corrugation; 1-3, a plane plate; 1-4, inserting holes; 2. a plate pair; 2-1, an inner flow passage; 2-2, an outer flow passage; 3. sealing the strip plate; 4. a tension bar; 5. cushion blocks; 6. locking the nut; 7. a comb plate.

Detailed Description

The present invention will be further described with reference to the following detailed description. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.

In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components has been exaggerated in some places in the drawings where appropriate for clarity of illustration.

Example (b):

as shown in fig. 1-3, in a preferred embodiment, the present invention provides a plate-type reinforced heat exchange box structure, which includes a plurality of inner flow channels 2-1 and a plurality of outer flow channels 2-2, the inner flow channel 2-1 is formed by splicing two plates 1, a plurality of flow channel grooves 1-1 are spaced on the plates 1, heat exchange corrugations 1-2 are formed on the inner and outer surfaces of the flow channel grooves 1-1, the two plates 1 are spliced into plate pairs 2, the flow channel grooves 1-1 with C-shaped shapes on the two plates 1 are spliced into the inner flow channels 2-1 with oblate shapes for one gas to flow through, the two adjacent plate pairs 2 are separated by a strip sealing plate 3, the strip sealing plate 3 is located at two ends of the inner flow channel 2-1 to form the outer flow channels 2-2, the outer flow channels 2-2 are perpendicular to the direction of the axis of the inner flow channel 2-1 in the plate pairs 2 for the other gas to flow through, and plates 2-2 are provided with plates 7 at two ends for fixing the plates 1 and preventing the plates 1 from shaking. In fig. 2, two arrows respectively indicate the flowing directions of two gases, and the two gases respectively flow in the inner flow channel 2-1 and the outer flow channel 2-2, so that heat exchange is realized.

The heat exchange box is characterized in that the part between two adjacent runner grooves 1-1 on each plate sheet 1 is a plane plate 1-3, through holes 1-4 are formed in the plane plates 1-3, a plurality of plate sheet pairs 2 are connected through a plate sealing plate 3, a tensioning rod 4, a cushion block 5 and a locking nut 6, the tensioning rod 4 penetrates through the through holes 1-4 in the plane plates 1-3, the cushion block 5 is located between the two adjacent plate sheet pairs 2 and is sleeved on the tensioning rod 4, and the locking nut 6 is installed at two ends of the tensioning rod 4, so that all the plate sheet pairs 2 are connected into a whole to form a cross flow plate sheet type reinforced heat exchange box structure.

The surfaces between two adjacent inner flow channels 2-1 on the plate pairs 2, namely the spliced plane plates 1-3 form the expanded heat exchange fins, which is beneficial to further improving the heat transfer between the gases in the inner flow channels 2-1 and the outer flow channels 2-2, thereby greatly reducing the metal consumption of the heat exchanger.

The application provides a heat transfer case structure is reinforceed to plate formula makes the assembly process as follows:

the method comprises the steps of processing a thin steel plate into a sheet of plate 1 by using rolling equipment or press molding equipment, pressing a flow channel groove 1-1 on the surface of the plate 1 according to design requirements, pressing reinforced heat exchange corrugations 1-2 on the inner surface and the outer surface of the flow channel groove 1-1, arranging a plane plate 1-3 outside the flow channel groove 1-1 of the plate 1, arranging through holes 1-4 on the plane plate 1-3 between the flow channel grooves 1-1, assembling the two plates 1 into a plate pair 2 in a face-to-face mode as shown in figure 1, and welding the plane plates 1-3 of the two plates 1 in a contact zone (such as laser fusion welding). The runner grooves 1-1 of the two plates 1 form an inner runner 2-1, and a channel between the two plate pairs 2 is an outer runner 2-2.

Installing strip sealing plates 3 at two ends of a flow channel 2-1 in a plate pair 2, welding the strip sealing plates 3 and the plate pair 2, penetrating tension rods 4 through insertion holes 1-4 in plane plates 1-3 of the plate pair 1, sleeving cushion blocks 5 on the tension rods 4, assembling the next plate pair 2, the strip sealing plates 3 and the cushion blocks 5, repeating the steps until the last plate pair 2 is installed, installing locking nuts 6 at the end parts of the tension rods 4, installing comb plates 7 at edges of two ends of a flow channel 2-2 outside the plate pair 2, and welding the edges of the comb plates 7 and the plate pair 2.

Finally, it should be noted that: the present invention is not limited to the above embodiments, and all the equivalent structures or equivalent processes that are used in the specification and the attached drawings are transformed or directly or indirectly used in other related technical fields, and all the same principles are included in the protection scope of the present invention.

Claims

1. A plate type reinforced heat exchange box structure is characterized by comprising a plurality of inner flow channels (2-1) and a plurality of outer flow channels (2-2), wherein the inner flow channels (2-1) are formed by splicing two plates (1), a plurality of flow channel grooves (1-1) are formed in the plates (1) at intervals, the two plates (1) are spliced into plate pairs (2), the flow channel grooves (1-1) in the two plates (1) are spliced into the inner flow channels (2-1) for one gas to flow, the two adjacent plate pairs (2) are separated by a plate sealing plate (3) to form the outer flow channels (2-2) for the other gas to flow, and the two gases flow in the inner flow channels (2-1) and the outer flow channels (2-2) respectively to realize heat exchange.

2. The plate-type reinforced heat exchange box structure according to claim 1, wherein the inner and outer surfaces of the runner channel (1-1) are pressed with heat exchange corrugations (1-2).

3. The plate-type reinforced heat exchange box structure according to claim 1, wherein the flow channel grooves (1-1) are C-shaped, the C-shaped flow channel grooves (1-1) on two plates (1) are spliced to form the inner flow channel (2-1), and the inner flow channel (2-1) is oblate.

4. A plate type reinforced heat exchange box structure as recited in claim 2, characterized in that the strip sealing plate (3) is located between two adjacent plate pairs (2) and at both ends of the inner flow channel (2-1), and the outer flow channel (2-2) is perpendicular to the direction of the axis of the inner flow channel (2-1) in the plate pair (2).

5. The plate-type reinforced heat exchange box structure according to claim 4, wherein the portion of the plate (1) between two adjacent runner channels (1-1) is a planar plate (1-3), the planar plate (1-3) is provided with through holes (1-4), the plate pairs (2) are connected through a strip sealing plate (3), a tightening rod (4), a spacer block (5) and a locking nut (6), the tightening rod (4) penetrates through the through holes (1-4) of the planar plate (1-3), the spacer block (5) is located between two adjacent plate pairs (2) and is sleeved on the tightening rod (4), and the locking nut (6) is installed at two ends of the tightening rod (4), so that all the plate pairs (2) are connected into a whole to form the plate-type reinforced heat exchange box structure.

6. The plate-type reinforced heat exchange box structure according to claim 5, characterized in that comb-shaped plates (7) are installed at both ends of the outer flow passage (2-2).