A vertical wound tube heat exchange component with a lateral necking

Abstract

The present invention relates to the field of heat exchanger design, and particularly relates to a vertical wound tube heat exchange component with a laterally closed end, comprising: a central cylinder vertically arranged, with a connecting pipe connected to its top; a wound tube wound outside the central cylinder, and the wound tube is divided into at least two layers in the radial direction of the central cylinder; a spacer strip arranged between adjacent two layers of the wound tubes and / or between the wound tube and the central cylinder and / or outside the outermost wound tube, and grooves matching the outer contour of the wound tube are formed on the spacer strip; a support and positioning device, which is used for fixedly connecting with the central cylinder, the wound tube and the spacer strip, and is used for supporting the central cylinder, the wound tube and the spacer strip; compared with the prior art, the present invention improves the processing precision of the wound tube, enhances the safety, and improves the mechanical and seismic performance of the heat exchanger on the premise of ensuring meeting the thermal and structural requirements.

Description

Technical Field

[0001] The present invention relates to the field of heat exchanger design, and particularly to a vertical wound tube heat exchange component with lateral necking-in. Background Art

[0002] Due to characteristics such as a compact structure and high heat transfer efficiency, the wound tube heat exchange component is the preferred core component of an efficient heat exchanger.

[0003] Due to characteristics such as a large heat transfer area per unit volume, a high heat transfer coefficient, high pressure resistance, and self-compensation for thermal expansion, the wound tube heat exchanger has been widely applied in fields such as petrochemical industry, coal chemical industry, and liquefied natural gas, and its structural design has tended to be standardized. In the nuclear field, due to nuclear safety requirements, higher requirements are put forward for the reliability, safety, etc. of the wound tube heat exchanger.

[0004] Therefore, the existing technology still needs to be improved. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems of insufficient safety and reliability in the existing technology.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] The present invention provides a vertical wound tube heat exchange component with lateral necking-in, including:

[0008] A central cylinder vertically arranged, with a connecting pipe connected to its top;

[0009] A wound tube wound around the outside of the central cylinder, and the wound tube is divided into at least two layers along the radial direction of the central cylinder;

[0010] Gasket strips are arranged between adjacent two layers of the wound tubes and / or between the wound tube and the central cylinder and / or outside the outermost wound tube, and grooves matching the outer contour of the wound tube are formed on the gasket strips;

[0011] A support and positioning device, which is used for fixedly connecting with the central cylinder, the wound tube and the gasket strips, and is used for supporting the central cylinder, the wound tube and the gasket strips;

[0012] The wound tube includes a uniformly wound section and a necking-in section. The uniformly wound section is arranged outside the central cylinder, and the wound tube at the uniformly wound section extends along the spiral upward direction. The necking-in section is connected to both ends of the uniformly wound section. One end of the necking-in section is connected to the uniformly wound section, and the other end of the necking-in section is connected to the tube sheet.

[0013] Furthermore, the inner diameter of the wound tube at the necking-in section is equal to the inner diameter of the wound tube at the uniformly wound section.

[0014] Furthermore, a dummy tube sheet is connected to one end of the uniformly wound section.

[0015] Furthermore, the cushion strip includes an interlayer cushion strip and an outer layer cushion strip. The interlayer cushion strip is arranged between two adjacent winding tubes, and the outer layer cushion strip is arranged outside the outermost winding tube. The upper and lower ends of the outer layer cushion strip are fixedly connected to the positioning blocks at the upper and lower ends of the central cylinder respectively.

[0016] Furthermore, one side of the interlayer cushion strip is grooved, and the grooving direction is towards the outer winding tube. The grooving shape is matched with the outer winding tube. The other side of the interlayer cushion strip is flat, facing the inner winding tube and in contact with and pressing against the inner winding tube. Both sides of the outer layer cushion strip are flat.

[0017] Furthermore, a plurality of clamps are arranged on one side of the interlayer cushion strip. The opening direction of the clamp is towards the other side of the interlayer cushion strip, and the opening shape is matched with the outer winding tube. The other side of the interlayer cushion strip is flat, facing the inner winding tube and in contact with and pressing against the inner winding tube. Both sides of the outer layer cushion strip are flat.

[0018] Furthermore, both sides of the interlayer cushion strip are grooved, and the grooving directions are respectively towards the corresponding winding tubes, and the grooving shapes are matched with the corresponding winding tubes; one side of the outer layer cushion strip facing the outermost winding tube is grooved, and the grooving direction is towards the outermost winding tube, and the grooving shape is matched with the shape of the outermost winding tube. The other side of the outer layer cushion strip is flat.

[0019] Furthermore, a reinforcing rib is fixedly wound around the outer layer cushion strip. The extending direction of the reinforcing rib is the same as the circumferential direction of the central cylinder, and a flow guide plate is fixed between the reinforcing rib and the outer layer cushion strip.

[0020] Furthermore, a fixing pin, a support tube and a support plate are also arranged at the lower part of the central cylinder, and top pull rods are fixed on both sides of the connecting tube.

[0021] Furthermore, the winding tube includes a heat exchange winding tube and a support winding tube. A heat exchange medium flows through the cavity of the heat exchange winding tube for heat exchange with the central cylinder; no heat exchange medium flows through the cavity of the support winding tube, which is used to enhance the support force for the heat exchange winding tube.

[0022] The beneficial effects of the present invention are as follows: Through special structural design, on the premise of meeting the requirements of thermal engineering and structure, the processing precision of the winding tube is improved (to prevent situations such as tube interference and collision at the closing position during the winding process), the safety is enhanced (there is no welding on the surface of the heat transfer tube), and the mechanical and seismic performance of the heat exchanger is improved; the radius design of the closing section can improve the supporting force of the components of the present invention and can support the smooth passage of the eddy current probe. Such a pipe diameter design ensures that the heat exchange components protected by the present invention can support in-service inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of a vertical winding tube heat exchange component with lateral closing provided by the present invention;

[0024] Figure 2 is a schematic structural diagram of the winding tube provided by the present invention;

[0025] Figure 3 is a schematic structural diagram of a single-sided grooved interlayer spacer bar from one perspective provided by the present invention;

[0026] Figure 4 is a schematic structural diagram of a single-sided grooved interlayer spacer bar from another perspective provided by the present invention;

[0027] Figure 5 is a schematic structural diagram of the cooperation between the single-sided grooved interlayer spacer bar and the winding tube provided by the present invention;

[0028] Figure 6 is a schematic structural diagram of a double-sided grooved interlayer spacer bar from one perspective provided by the present invention;

[0029] Figure 7 is a schematic structural diagram of a double-sided grooved interlayer spacer bar from another perspective provided by the present invention;

[0030] Figure 8 is a schematic structural diagram of the cooperation between the double-sided grooved interlayer spacer bar and the winding tube provided by the present invention;

[0031] Figure 9 is a schematic structural diagram of an outer spacer bar from one perspective provided by the present invention;

[0032] Figure 10 is a schematic structural diagram of an outer spacer bar from another perspective provided by the present invention;

[0033] Figure 11 is a schematic structural diagram of a clamp-type interlayer spacer bar from one perspective provided by the present invention;

[0034] Figure 12 is a schematic structural diagram of a clamp-type interlayer spacer bar from another perspective provided by the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the convenience of description, only the parts related to the present invention rather than all the structures are shown in the drawings.

[0036] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0037] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0038] In the description of this embodiment, the orientation or positional relationships such as "up", "down", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0039] As Figures 1 to 10 shown, the present invention provides a vertical wound-tube heat exchange assembly with a lateral necking, including:

[0040] A vertically arranged central cylinder 6, with connecting plates 2 welded to its upper and lower ends, and a connecting pipe 1 connected to its top;

[0041] A wound tube 14, wound around the outside of the central cylinder 6, and the wound tube 14 is divided into at least two layers in the radial direction along the central cylinder 6;

[0042] The spacer is arranged between two adjacent layers of the winding pipes 14 and / or between the winding pipe 14 and the central cylinder 6 and / or outside the outermost winding pipe 14. Grooves matching the outer contour of the winding pipe 14 are formed in the spacer.

[0043] The support and positioning device is used for fixedly connecting with the central cylinder 6, the winding pipe 14 and the spacer, and for supporting the central cylinder 6, the winding pipe 14 and the spacer.

[0044] The winding pipe 14 includes a uniformly wound section 141 and a closing section 142. The uniformly wound section 141 is arranged outside the central cylinder. The winding pipe 14 at the uniformly wound section 141 extends along the spiral upward direction. The closing section 142 is connected to both ends of the uniformly wound section 141, and a tube sheet 12 is connected to the upper end of the closing section 142.

[0045] Further, the inner diameter of the winding pipe 14 at the closing section 142 is equal to the inner diameter of the winding pipe 14 at the uniformly wound section 141. The inner diameter of the pipeline at the closing section is equal to that at the uniform section, which can provide sufficient supporting force for the winding pipe at the closing section and ensure the structural support strength. The bending radius at the closing section of the winding pipe can ensure the smooth passing of the eddy current probe. Such a pipe diameter design ensures that the heat exchange component protected by the present invention can support in-service inspection.

[0046] Further, a dummy tube sheet 10 is connected to the lower end of the uniformly wound section 141.

[0047] Further, the spacer includes an interlayer spacer 13 and an outer layer spacer 4. The interlayer spacer 13 is arranged between two adjacent layers of the winding pipes 14, and the outer layer spacer 4 is arranged outside the outermost winding pipe 14. The upper and lower ends of the outer layer spacer 4 are fixedly connected to the positioning blocks 3 at the upper and lower ends of the central cylinder 6 respectively.

[0048] As Figures 3 to 5 shown, the interlayer spacer 13 can adopt a form of grooving on one side, the grooving direction faces the outer winding pipe 14, the grooving shape matches the outer winding pipe 14, the other side of the interlayer spacer 13 is a plane, which faces the inner winding pipe 14 and is in contact with and presses the inner winding pipe, and both sides of the outer layer spacer 4 are planes.

[0049] As Figures 11 to 12As shown, the interlayer spacer 13 can be in the form of a clamp. A number of clamps 131 are provided on one side thereof. The opening direction of the clamp 131 faces the other side of the interlayer spacer 13. The opening shape matches the outer winding tube 14. The other side surface of the interlayer spacer 13 is flat, faces the inner winding tube 14, and contacts and presses against the inner winding tube 14. Both side surfaces of the outer spacer 4 are flat.

[0050] As Figures 6 to 10 shown, the interlayer spacer 13 can also be in the form of having grooves on both side surfaces. The grooving directions face the corresponding winding tubes 14 respectively, and the grooving shapes match the corresponding winding tubes 14. The outer spacer 4 has a groove on the side facing the outermost winding tube 14. The grooving direction faces the outermost winding tube, and the grooving shape matches the shape of the outermost winding tube. The other side of the outer spacer is flat.

[0051] Furthermore, a reinforcing rib 5 is fixedly wound around the outer spacer 4. The extending direction of the reinforcing rib 5 is the same as the circumferential direction of the central cylinder 6. A flow guide plate 11 is fixed between the reinforcing rib 5 and the outer spacer 4.

[0052] Furthermore, a fixing pin 16, a support tube 17 and a support plate 18 are further provided at the lower part of the central cylinder 6. Top tie rods 15 are fixed on both sides of the connecting pipe 1.

[0053] Furthermore, the winding tube 14 includes a heat exchange winding tube and a support winding tube. A heat exchange medium flows through the cavity of the heat exchange winding tube for heat exchange with the central cylinder 6. No heat exchange medium flows through the cavity of the support winding tube, which is used to enhance the supporting force for the heat exchange winding tube.

[0054] Through special structural design, the present invention improves the processing precision of the winding tube (preventing situations such as tube interference and collision at the closing position during the winding process), enhances safety (no welding on the surface of the heat transfer tube), and improves the mechanical and seismic performance of the heat exchanger on the premise of meeting the thermal and structural requirements; the radius design of the closing section can improve the supporting force of the components of the present invention and can support the eddy current probe to pass smoothly. Such a pipe diameter design ensures that the heat exchange component protected by the present invention can support in-service inspection.

[0055] Note that the above is only a preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A vertical wound tube heat exchange component with a lateral necking, characterized in that, Comprising: A vertically arranged central cylinder body, with a connecting pipe connected to its top; A winding pipe, wound around the outside of the central cylinder body, and the winding pipe is divided into at least two layers in the radial direction of the central cylinder body; A spacer, arranged between adjacent two layers of the winding pipes and / or between the winding pipe and the central cylinder body and / or outside the outermost winding pipe, and grooves matching the outer contour of the winding pipe are formed on the spacer; A support and positioning device, which is used for fixedly connecting with the central cylinder body, the winding pipe and the spacer, and is used for supporting the central cylinder body, the winding pipe and the spacer; The winding pipe includes a uniformly wound section and a closing section. The uniformly wound section is arranged outside the central cylinder body, and the winding pipe at the uniformly wound section extends along the spiral upward direction. The closing section is connected to both ends of the uniformly wound section. One end of the closing section is connected to the uniformly wound section, and the other end of the closing section is connected to a tube sheet; The spacer includes an interlayer spacer and an outer layer spacer. The interlayer spacer is arranged between adjacent two layers of the winding pipes, and the outer layer spacer is arranged outside the outermost winding pipe. The upper and lower ends of the outer layer spacer are fixedly connected to the positioning blocks at the upper and lower ends of the central cylinder body respectively; Reinforcing ribs are fixedly wound around the outside of the outer layer spacer. The extending direction of the reinforcing ribs is the same as the circumferential direction of the central cylinder body, and a flow guide plate is fixed between the reinforcing ribs and the outer layer spacer; Fixed pins, support pipes and support plates are further arranged at the lower part of the central cylinder body, and top tie rods are fixed on both sides of the connecting pipe; The inner diameter of the winding pipe at the closing section is equal to the inner diameter of the winding pipe at the uniformly wound section; A plurality of clamps are arranged on one side of the interlayer spacer. The opening direction of the clamp faces the other side of the interlayer spacer, and the opening shape matches the outer winding pipe. The other side surface of the interlayer spacer is a plane, which faces the inner winding pipe and contacts and presses against the inner winding pipe. Both side surfaces of the outer layer spacer are planes.

2. The vertical winding tube heat exchange assembly with lateral necking according to claim 1, characterized in that, A dummy tube sheet is connected to one end of the uniformly wound section.

3. The vertical wound tube heat exchange component with lateral necking according to claim 1, characterized in that, One side surface of the interlayer spacer is grooved, and the grooving direction faces the outer winding pipe. The grooving shape matches the outer winding pipe. The other side surface of the interlayer spacer is a plane, which faces the inner winding pipe and contacts and presses against the inner winding pipe. Both side surfaces of the outer layer spacer are planes.

4. The vertical wound tube heat exchange module with lateral necking according to claim 1, wherein, Both side surfaces of the interlayer spacer are grooved, and the grooving directions face the corresponding winding pipes respectively, and the grooving shapes match the corresponding winding pipes; the side of the outer layer spacer facing the outermost winding pipe is grooved, and the grooving direction faces the outermost winding pipe, and the grooving shape matches the shape of the outermost winding pipe. The other side of the outer layer spacer is a plane.

5. The vertical wound tube heat exchange module with lateral closing mouth according to claim 1, characterized in that The winding pipe includes a heat exchange winding pipe and a support winding pipe for providing a supporting force to the heat exchange winding pipe. A heat exchange medium flows through the cavity of the heat exchange winding pipe; no heat exchange medium flows through the cavity of the support winding pipe.

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