CN209371866U - A kind of tube bundle support structure of shell-and-tube heat exchanger - Google Patents

Abstract

The utility model discloses a kind of tube bundle support structures of shell-and-tube heat exchanger, including being located at the annulus of support construction periphery and the cyclone pipe being located in annulus, the square arrangement of cyclone pipe, it is welded to connect between adjacent cyclone pipe by steel disc, it is welded to connect between the cyclone pipe and annulus of annulus by steel disc, adjacent 4 cyclone pipes and the steel disc of connection surround jointly can the through-hole that passes through of heat exchanger tube, and the outer wall of adjacent 4 cyclone pipes and the outer wall of heat exchanger tube are tangent, the heat exchanger tube for passing through through-hole is clamped, the support of exchange heat pipe is formed.Meanwhile cyclone pipe also passes through for fluid, fluid generates eddy flow after flowing through cyclone pipe, so that nearly wall intracorporal to shell and remote wall fluid generate metathesis, increases shell-side fluid heat transfer coefficient, improves total heat exchange efficiency.In addition, shell-side fluid can also flow through in the gap between cyclone pipe and heat exchanger tube, shell-side fluid is axially flowed along heat exchanger tube, generates induced vibration when avoiding fluid transversal flow heat-exchanging tube bundle.

Description

A tube bundle support structure for a shell and tube heat exchanger

technical field

The utility model belongs to the field of heat transfer equipment, and relates to a tube bundle support structure of a shell-and-tube heat exchanger.

Background technique

The shell-and-tube heat exchangers in the prior art are usually provided with arcuate baffles, which, as a component supporting the heat exchange tubes, are usually made of steel plates and have an arcuate shape. It is made of 4 to 1/3 parts, the fluid passes through the gap, and the arcuate baffles are provided with tube holes for the heat exchange tubes to pass through, so as to support the heat exchange tubes, and several baffles are arranged at equal distances in the axial direction. , the gaps of the two adjacent baffles are in opposite directions, and the shell-side fluid flows through the upper and lower gaps or the left and right gaps alternately, flowing in an "S" shape, but such a flow method is prone to flow dead corners, and the heat transfer area cannot be fully utilized. Therefore, the shell-side heat transfer coefficient is low, it is easy to scale, and the fluid resistance is large, and when the fluid flows laterally through the tube bundle, it may cause the tube to induce vibration and destroy the reliability of the connection between the tube and the tube sheet.

Utility model content

In order to overcome the deficiencies in the prior art, the utility model provides a tube bundle support structure of a shell and tube heat exchanger. The design of the tube bundle support structure not only supports the heat exchange tube bundles of the heat exchanger, but also makes the heat exchange tube bundles of the heat exchanger supported. The shell side fluid of the heat exchanger flows along the axial direction of the heat exchange tubes, avoiding the impact on the tube bundles when the fluid flows laterally, reducing the vibration of the heat exchange tube bundles and reducing the flow resistance on the shell side. The design of the swirl tubes in the tube bundle support structure not only supports the heat exchange tubes, but also allows the fluid to pass through. The wall fluid produces a displacement effect, which strengthens the heat transfer of the shell-side fluid and improves the overall heat exchange efficiency of the heat exchanger.

The solution of the utility model to solve the technical problem is: a tube bundle support structure of a shell-and-tube heat exchanger, which includes a ring arranged on the periphery of the support structure and a number of swirl tubes arranged in the ring. The tubes are arranged in a square shape, the spacing of the swirling tubes is equal to the spacing of the heat exchange tubes in the heat exchanger, and the adjacent swirling tubes are welded by steel sheets. The four adjacent swirling tubes and their connecting steel sheets together form a through hole for the heat exchange tubes in the heat exchanger to pass through, and the outer walls of the four adjacent swirling tubes are connected by steel sheet welding. Tangent to the outer wall of the heat exchange tube, the heat exchange tube passing through the through hole is clamped to form a support for the heat exchange tube.

As a further improvement of the above solution, the swirling tube includes a circular tube and a swirling sheet disposed inside the circular tube, and the height of the swirling sheet is equal to the length of the circular tube.

As a further improvement of the above solution, the round pipe adopts seamless steel pipe.

As a further improvement of the above solution, the swirling sheet is formed by twisting a rectangular steel sheet whose width is the inner diameter of the circular tube and the length is the length of the circular tube.

As a further improvement of the above solution, the central axis of the swirl vane and the axis of the circular tube coincide with each other.

As a further improvement of the above solution, the connection between the swirl piece and the circular tube is welding.

As a further improvement of the above solution, the height of the ring is equal to the length of the swirling tube, which can be adjusted according to the size of the heat exchanger, and the range is 10 mm to 100 mm.

As a further improvement of the above solution, the axis of the swirling tube is parallel to the axis of the ring

As a further improvement of the above solution, the ring is made of steel.

The beneficial effects of the present invention are as follows: the utility model provides a tube bundle support structure of a shell-and-tube heat exchanger, which includes a circular ring arranged on the periphery of the supporting structure and a plurality of swirl tubes arranged in the annular ring. Arranged in a square, the spacing of the swirling tubes is equal to the spacing of the heat exchange tubes in the heat exchanger, the adjacent swirling tubes are connected by steel sheet welding, and the swirling tubes close to the ring are connected with the ring. Through the welded connection of steel sheets, the adjacent four swirl tubes and their connecting steel sheets together form a through hole through which the heat exchange tubes in the heat exchanger can pass, and the outer walls of the adjacent four swirl tubes are connected to The outer walls of the heat exchange tubes are tangent to effectively clamp the heat exchange tubes passing through the through holes to form a support for the heat exchange tubes. At the same time, the swirling tube can also allow fluid to pass through, and the fluid can also flow through the gap between the swirling tube and the heat exchange tube, so that the shell-side fluid of the heat exchanger flows along the axial direction of the heat exchange tube, avoiding the lateral scouring of the fluid. Induced vibrations are generated when the heat pipe bundles. After the fluid flows through the swirl tube, a swirl flow is generated, which replaces the fluid in the near wall and the far wall in the shell, increases the heat transfer coefficient of the shell side fluid, and improves the overall heat exchange efficiency. At the same time, the fluid flows axially in the shell, and the fluid inside and outside the heat exchange tube can be designed to flow in the form of "pure countercurrent" to increase the heat transfer temperature difference, thereby improving the overall heat transfer coefficient.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly describes the accompanying drawings that are used in the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present invention, but not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings according to these drawings without creative work.

Fig. 1 is the overall structure schematic diagram of the present utility model;

Reference numerals: 1, steel sheet; 2, swirl tube; 3, swirl sheet; 4, ring; 5, heat exchange tube; 6, through hole.

Detailed ways

The concept, specific structure and technical effects of the present invention will be clearly and completely described below with reference to the embodiments and accompanying drawings, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, those skilled in the art can obtain other embodiments without creative work, All belong to the protection scope of the present invention. In addition, all connection relationships mentioned in the text do not mean that the components are directly connected, but refer to a better connection structure that can be formed by adding or reducing connection accessories according to specific implementation conditions. Various technical features in the present invention can be combined interactively on the premise of not contradicting each other.

Referring to Fig. 1, a tube bundle support structure of a shell and tube heat exchanger includes a ring 4 arranged on the periphery of the support structure and a plurality of swirl tubes 2 arranged in the ring 4. The swirl tubes 2 are arranged in a square, and the swirling The spacing of the flow tubes 2 is equal to the spacing of the heat exchange tubes 5 in the heat exchanger. The adjacent swirling tubes 2 are welded and connected by the steel sheet 1, and the swirling tubes 2 close to the ring 4 and the ring 4 are connected by welding. Through the welded connection of the steel sheets 1, the adjacent four swirl tubes 2 and their connecting steel sheets 1 together form a through hole 6 for the heat exchange tubes 5 in the heat exchanger to pass through, and the four adjacent swirl tubes 2 The outer wall of the flow tube 2 is tangent to the outer wall of the heat exchange tube 5 , so that the four swirling tubes 2 effectively clamp the heat exchange tube 5 passing through the through hole 6 to form a support for the heat exchange tube 5 .

The swirl tube 2 can also allow fluid to pass through, and the fluid can also flow through the gap between the swirl tube 2 and the heat exchange tube 5, so that the shell-side fluid of the heat exchanger flows axially along the heat exchange tube 5, avoiding the lateral flow of the fluid. Induced vibration occurs when the heat exchange tube 5 is flushed. After the fluid flows through the swirling tube 2, a swirling flow is generated, thereby replacing the fluid in the near wall and the far wall in the shell, increasing the heat transfer coefficient of the shell side fluid and improving the overall heat exchange efficiency. At the same time, the fluid flows axially in the shell, and the fluid inside and outside the heat exchange tube 5 can be designed to flow in a "pure countercurrent" flow form to increase the heat transfer temperature difference, thereby increasing the overall heat transfer coefficient. In the heat exchanger, several supporting structures are arranged at equal intervals along the axis, so that during the axial flow of the shell-side fluid in the heat exchanger, swirl flow will be continuously generated when flowing through the swirl tube 2, thereby effectively increasing the Heat transfer coefficient.

As a further preferred embodiment, the swirling tube 2 includes a circular tube and a swirling sheet 3 disposed inside the circular tube, and the length of the swirling sheet 3 is equal to the length of the circular tube.

As a further preferred embodiment, the round pipe adopts a seamless steel pipe.

As a further preferred embodiment, the swirling sheet 3 is formed by twisting a rectangular steel sheet whose width is the inner diameter of the circular tube and the length is the length of the circular tube.

As a further preferred embodiment, the central axis of the swirling sheet 3 coincides with the axis of the swirling tube 2 .

As a further improvement of the above solution, the connection mode of the swirl vane 3 and the circular tube is welding.

As a further preferred embodiment, the length of the swirling tube 2 is 10 mm to 100 mm, which can be determined according to the size of the heat exchanger. The larger the shell-and-tube heat exchanger, the longer the swirling tube 2 is.

As a further preferred embodiment, the axis of the swirl tube 2 is parallel to the axis of the ring 4 .

As a further preferred embodiment, the ring 4 is made of steel.

The preferred embodiments of the present invention have been specifically described above, but the present invention is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or variations without departing from the spirit of the present invention. Alternatives, these equivalent modifications or substitutions are all included within the scope defined by the claims of the present application.

Claims (9)

1. a kind of tube bundle support structure of shell-and-tube heat exchanger, which is characterized in that including be located at support construction periphery annulus and Several cyclone pipes being located in annulus, the square arrangement of cyclone pipe, the spacing of the cyclone pipe, which is equal in heat exchanger, changes The spacing of heat pipe is welded to connect between the adjacent cyclone pipe by steel disc, is led between the cyclone pipe and annulus of annulus Steel disc welded connecting is crossed, adjacent 4 cyclone pipes and its connection steel disc are surrounded jointly and passed through for the heat exchanger tube in heat exchanger Through-hole, and the outer wall of the outer wall and the heat exchanger tube of 4 adjacent cyclone pipes is tangent, presss from both sides to the heat exchanger tube for passing through through-hole It holds, forms the support of exchange heat pipe.

2. tube bundle support structure according to claim 1, which is characterized in that the cyclone pipe includes round tube and is arranged in circle Spinning disk inside pipe, the length of the spinning disk and the equal length of round tube.

3. tube bundle support structure according to claim 2, which is characterized in that the round tube uses seamless steel pipe.

4. tube bundle support structure according to claim 2, which is characterized in that the spinning disk is in the round tube by width Diameter, the rectangle steel disc that length is the round tube length distort.

5. tube bundle support structure according to claim 2, which is characterized in that the connection side of the spinning disk and the round tube Formula is welding.

6. tube bundle support structure according to claim 2, which is characterized in that the central axes of the spinning disk and the round tube Axis overlap.

7. tube bundle support structure according to claim 1, which is characterized in that the length of the cyclone pipe and the annulus Highly equal, value range is 10mm~100mm.

8. tube bundle support structure according to claim 1, which is characterized in that the axis of the cyclone pipe and the annulus axle Line is parallel.

9. tube bundle support structure according to claim 1, which is characterized in that the annulus uses steel.