Supporting device for heat exchange tube of high-flux tube heat exchanger

Abstract

The invention provides a supporting device for a heat exchange tube of a high-flux tube heat exchanger, and relates to the technical field of tubular heat exchangers. The supporting device for the heat exchange tubes of the high-flux tube heat exchanger comprises a supporting plate and a frame, the axial projection of the supporting plate and the axial projection of the frame in the axial direction of a heat exchanger shell are both in a regular hexagon shape, the supporting plate is arranged on the inner side wall of the frame, and multiple sets of heat exchange tube bodies are fixedly connected to the inner side wall of the supporting plate and connected with the inner side of the heat exchanger shell through the supporting plate and the frame. The heat exchange tube is installed in the heat exchanger shell through the frame and the supporting plate, the connecting stability is effectively improved, the supporting structure is more stable when facing fluid impact, and vibration is not prone to occurring; the frame and the supporting plates are connected in a clamped mode through clamping grooves, every two adjacent sets of supporting strips are connected and fixed in a clamped mode through butt joint holes and butt joint pins, and the stability of connection is further improved; multiple groups of overflowing holes are formed in the inner wall of the supporting strip, so that the overall supporting strength of the supporting strip is not affected, and high flux and longitudinal heat exchange efficiency of the heat exchanger can be guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of tubular heat exchangers, and in particular to a supporting device for heat exchange tubes of a high-flux tubular heat exchanger. Background Art

[0002] In the design of shell and tube heat exchangers, longitudinal flow heat exchange has advantages over baffle heat exchange, such as lower pressure drop and smaller heat exchange dead zone, so it is often used in actual design. However, the traditional support plate formed by drilling round holes on the whole steel plate cannot achieve ideal longitudinal flow heat exchange.

[0003] In order to solve this problem, a heat exchange tube support device for a heat exchanger is proposed by the public technology, including a steel bar, on which two rows of staggered rectangular folded plates are arranged, the arrangement spacing of the two rows of rectangular folded plates is the same, and the arrangement spacing of adjacent rectangular folded plates on different rows of rectangular folded plates is adapted to the pipe layout pitch of the heat exchange tube. A certain flow space is left between the outer axial direction of the heat exchange tube and the heat exchange tube support device, so as to realize longitudinal heat exchange. The technology claims that it can not only facilitate the manufacture and installation of the equipment tube bundle, but also play a role in stably supporting the heat exchange tube and preventing the heat exchange tube from vibrating during the operation of the equipment, and at the same time achieve the effect of longitudinal heat exchange. However, in actual applications, its clamping and fixing effect on the heat exchange tube is not obvious, resulting in shaking between the heat exchange tube and the support device when the fluid flow impacts during use.

[0004] Another disclosed technology proposes a heat exchange tube support device for a serpentine tube header type high-pressure heater, which is arranged in the saturated section of the straight tube section and includes a plurality of support units, the support unit including a support plate, a groove plate and a support member, the support plate has a frame structure formed by connecting a plurality of sections of sub-support plates, the support plate is located at the periphery of the heat exchange tube and completely covers the heat exchange tube; the groove plate is arranged on the inner side of the sub-support plates on both sides of the support plate, and a plurality of grooves for the support members to be inserted are symmetrically arranged on the groove plates on both sides; the support member includes a first support member for supporting the middle heat exchange tube and a second support member for fixing the outer heat exchange tube, the first support member and the second support member are both inserted into the grooves of the groove plate through the straight sections at both ends and form an overall frame with the support plate and the groove plate. The heat exchange tube support device proposed in the disclosed technology effectively solves the assembly problem of the serpentine heat exchange tube and effectively supports the heat exchange tube; however, there is no effective connection between the first support member and the second support member in the disclosed technology, and the structure of the first support member and the second support member is too weak. During processing, all contact points must be welded to maintain stability during use, which needs further improvement.

[0005] Therefore, it is necessary to improve the structure of the support device of the heat exchange tube of the tube heat exchanger to ensure high flux while ensuring a stable support effect. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a support device for heat exchange tubes of a high-flux tube heat exchanger, which solves the problem of unstable connection of the support device for heat exchange tubes of a high-flux tube heat exchanger in the prior art.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A support device for heat exchange tubes of a high-flux tube heat exchanger, the high-flux tube heat exchanger comprising a heat exchanger shell and a plurality of groups of heat exchange tube bodies, the heat exchanger shell being provided with a hot flow inlet tube, a hot flow outlet tube, a cold flow inlet tube and a cold flow outlet tube, the plurality of groups of heat exchange tube bodies being arranged inside the heat exchanger shell through a plurality of groups of support devices, the plurality of groups of support devices being distributed in sequence at equal intervals along the axial direction of the heat exchanger shell; The supporting device includes a supporting plate and a frame. The supporting plate and the frame are both regular hexagons according to the axial projection of the heat exchanger shell. The supporting plate is arranged on the inner wall of the frame. Multiple groups of heat exchange tube bodies are fixedly connected to the inner wall of the supporting plate. Multiple groups of heat exchange tube bodies are connected to the inner side of the heat exchanger shell through the supporting plate and the frame.

[0008] Preferably, the frame includes an upper frame and a lower frame, and the upper frame and the lower frame are symmetrically arranged with the plane where the axis of the heat exchanger shell is located as the center, and a first clamping structure for clamping the support plate is provided between the opposite sides of the upper frame and the lower frame.

[0009] Preferably, the first clamping structure includes two groups of clamping slots, and the two groups of clamping slots are respectively arranged between opposite sides of the upper frame and the lower frame.

[0010] Preferably, the support plate is composed of a plurality of groups of support bars distributed up and down, a second clamping structure for mutual plugging is provided between any two adjacent groups of the support bars, a fixing structure for fixing the heat exchange tube body is also provided between any two adjacent groups of the support bars, and a flow structure for increasing the flow rate is provided on the inner wall of the support bar.

[0011] Preferably, the thickness of the support plate is consistent with the width of the inner side walls of the two groups of the slots, and the support plate is fixed to the frame via the slots.

[0012] Preferably, the second clamping structure includes multiple groups of docking pins and docking holes, the multiple groups of docking pins are respectively arranged on the lower walls of the multiple groups of support bars except the lowermost group, and the multiple groups of docking holes are respectively arranged on the upper walls of the multiple groups of support bars except the uppermost group, and any two adjacent groups of support bars are clamped with the docking pins through the docking holes on the opposite side.

[0013] Preferably, the upper edge of the docking hole and the end of the docking pin away from the support bar are both provided with a transition arc for facilitating docking and insertion.

[0014] Preferably, the fixing structure includes multiple groups of first semicircular grooves and second semicircular grooves, the multiple groups of first semicircular grooves are respectively arranged on the upper walls of the multiple groups of support bars except the uppermost group, the multiple groups of second semicircular grooves are respectively arranged on the lower walls of the multiple groups of support bars except the lowermost group, the first semicircular grooves and the second semicircular grooves between the opposite sides of any two adjacent groups of support bars are opposite to each other up and down and form a circular clamping hole, and the multiple groups of heat exchange tube bodies are respectively fixed by the multiple groups of circular clamping holes.

[0015] Preferably, the flow structure includes multiple groups of flow holes, and the multiple groups of flow holes are respectively arranged on the inner walls of multiple groups of support bars, and the axis lines of the multiple groups of flow holes are parallel to the axis line of the heat exchanger shell.

[0016] The present invention has the following beneficial effects: The heat exchange tubes are installed inside the heat exchanger shell through a frame and a support plate, which effectively improves the stability of the connection. When facing fluid impact, the supporting structure is more stable and less prone to vibration.

[0017] The frame and the support plate are connected by means of a card slot, and two adjacent groups of support bars in the support plate are connected and fixed by means of a docking hole and a docking pin, thereby further improving the stability of the connection.

[0018] A plurality of groups of flow holes are arranged on the inner wall of the support bar, which does not affect the overall support strength of the support bar and can ensure the high flux and longitudinal heat exchange efficiency of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 A radial cross-sectional view of the heat exchanger shell, frame, support plate and heat exchange tube connection structure of the present invention; Figure 3 This is a schematic diagram of the support bar structure of the present invention; Figure 4 It is a partial enlarged view of A in the third aspect of the present invention; Figure 5 It is a schematic diagram of the lower frame structure of the present invention.

[0020] Among them, 1. heat exchanger shell; 2. lower frame; 3. upper frame; 4. support bar; 401. first semicircular groove; 402. second semicircular groove; 403. docking hole; 404. docking pin; 5. heat exchange tube; 6. flow hole; 7. slot. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] like Figures 1 to 5 As shown, an embodiment of the present invention provides a support device for heat exchange tubes of a high-flux tube heat exchanger. The high-flux tube heat exchanger includes a heat exchanger shell 1 and multiple groups of heat exchange tube bodies 5. The heat exchanger shell 1 is provided with a hot flow inlet tube, a hot flow outlet tube, a cold flow inlet tube and a cold flow outlet tube. The multiple groups of heat exchange tube bodies 5 are arranged inside the heat exchanger shell 1 through multiple groups of support devices. The multiple groups of support devices are distributed in sequence at equal intervals along the axial direction of the heat exchanger shell 1.

[0023] The supporting device includes a supporting plate and a frame. The supporting plate and the frame are both regular hexagons according to the axial projection of the heat exchanger shell 1. The supporting plate is arranged on the inner wall of the frame. Multiple groups of heat exchange tube bodies 5 are fixedly connected to the inner wall of the supporting plate. The multiple groups of heat exchange tube bodies 5 are connected to the inner side of the heat exchanger shell 1 through the supporting plate and the frame.

[0024] In this embodiment, the heat exchanger shell 1 and the heat exchange tube body 5 are consistent with the structure of the tubular heat exchanger in the prior art. This embodiment focuses on optimizing and improving the support device of the heat exchange tube body 5 to ensure high flux while providing stable support.

[0025] In order to fix the support plate, the frame includes an upper frame 3 and a lower frame 2. The upper frame 3 and the lower frame 2 are symmetrically arranged with the plane of the axis of the heat exchanger shell 1 as the center. A first clamping structure for clamping the support plate is arranged between the opposite sides of the upper frame 3 and the lower frame 2.

[0026] The first clamping structure includes two groups of clamping grooves 7, which are respectively arranged between the upper frame 3 and the lower frame 2 on opposite sides. The thickness of the support plate is consistent with the width of the inner wall of the two groups of clamping grooves 7. The support plate is clamped and fixed to the frame through the clamping grooves 7. The support plate fixes the heat exchange tube body 5 while being fixed through the upper frame 3 and the lower frame 2.

[0027] In order to facilitate the installation of the heat exchange tube body 5 such as the serpentine tube, the support plate is composed of a plurality of groups of support bars 4 distributed up and down.

[0028] In order to improve the connection firmness between the multiple groups of support bars 4, a second clamping structure for mutual plugging is provided between any two upper and lower adjacent groups of the multiple groups of support bars 4.

[0029] The second clamping structure includes multiple groups of docking pins 404 and docking holes 403. The multiple groups of docking pins 404 are respectively arranged on the lower walls of the multiple groups of support bars 4 except the lowermost group. The multiple groups of docking holes 403 are respectively arranged on the upper walls of the multiple groups of support bars 4 except the uppermost group. Any two groups of support bars 4 adjacent to each other are clamped together through the docking holes 403 and docking pins 404 on the opposite side. The upper edge of the docking hole 403 and the end of the docking pin 404 away from the support bar 4 are both provided with transition arcs for facilitating docking and insertion.

[0030] When two adjacent groups of support bars 4 are assembled, they are not only fixed by the card slots 7, but also connected to each other by the docking holes 403 and the docking pins 404, so that the multiple groups of support bars 4 can form a whole after assembly, effectively resist fluid impact, and greatly improve the stability of the connection; the transition arc is set to improve the smoothness of the docking.

[0031] When installing the heat exchange tube body 5, first install the lower frame 2, then insert a group of support bars 4 through the slots 7, and insert the heat exchange tube body 5 into the first semicircular groove 401 above the support bar 4. After the heat exchange tube body 5 is inserted, another group of support bars 4 is inserted through the slots 7. After all the support bars 4 and the heat exchange tube body 5 are inserted, the upper frame 3 is inserted.

[0032] In order to fix the multiple groups of heat exchange tube bodies 5, a fixing structure for fixing the heat exchange tube bodies 5 is also provided between any two groups of upper and lower adjacent groups of the multiple groups of support bars 4. The fixing structure includes multiple groups of first semicircular grooves 401 and second semicircular grooves 402. The multiple groups of first semicircular grooves 401 are respectively arranged on the upper walls of the multiple groups of support bars 4 except the uppermost group, and the multiple groups of second semicircular grooves 402 are respectively arranged on the lower walls of the multiple groups of support bars 4 except the lowermost group. The first semicircular grooves 401 and the second semicircular grooves 402 between the opposite sides of any two groups of upper and lower adjacent groups of support bars 4 in the multiple groups of support bars 4 are opposite to each other and form circular clamping holes. The multiple groups of heat exchange tube bodies 5 are respectively fixed through the multiple groups of circular clamping holes. The multiple groups of heat exchange tube bodies 5 are clamped and fixed through the circular clamping holes, which plays a role of supporting and fixing. The outer diameter of the heat exchange tube body 5 can be adapted by selecting a suitable circular clamping hole diameter, so that the heat exchange tube body 5 can be clamped after the support plate and the frame are assembled.

[0033] In order to maintain high flux and obtain better longitudinal heat exchange effect, the inner wall of the support bar 4 is provided with a flow structure for increasing the flow rate, and the flow structure includes multiple groups of flow holes 6, which are respectively arranged on multiple groups of inner walls of the support bar 4, and the axis lines of the multiple groups of flow holes 6 are parallel to the axis line of the heat exchanger shell 1. The multiple groups of flow holes 6 can effectively increase the flow flux and maintain a better longitudinal heat exchange effect.

[0034] Working principle: In this embodiment, the thickness of the support plate is consistent with the width of the inner wall of the two groups of slots 7. The support plate is fixed to the frame through the slots 7. The support plate fixes the heat exchange tube body 5 and is fixed through the upper frame 3 and the lower frame 2 at the same time; during installation, the lower frame 2 is installed first, and then a group of support bars 4 are inserted through the slots 7, and the heat exchange tube body 5 is inserted into the first semicircular groove 401 above the support bar 4. After the heat exchange tube body 5 is inserted, another group of support bars 4 is inserted through the slots 7. After all the support bars 4 and the heat exchange tube body 5 are inserted, the upper frame 3 is inserted; when two adjacent groups of support bars 4 are assembled, they are not only fixed through the slots 7, but also through the docking holes 403 and the docking holes The connecting pins 404 are mutually engaged, so that the multiple groups of support bars 4 can form a whole after assembly, effectively resist fluid impact, and greatly improve the stability of the connection; the multiple groups of heat exchange tube bodies 5 are respectively fixed by multiple groups of circular clamping holes, and the multiple groups of heat exchange tube bodies 5 are clamped and fixed by the circular clamping holes, which play a role of support and fixation. The outer diameter of the heat exchange tube body 5 can be adapted by selecting a suitable circular clamping hole diameter, and the heat exchange tube body 5 can be clamped after the support plate and the frame are assembled; the axial center lines of the multiple groups of flow holes 6 are parallel to the axial center line of the heat exchanger shell 1. The multiple groups of flow holes 6 can effectively increase the flow flux and maintain a good longitudinal heat exchange effect.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A support device for heat exchange tubes of a high flux tube heat exchanger, characterized in that: The high-flux tube heat exchanger comprises a heat exchanger shell (1) and a plurality of groups of heat exchange tube bodies (5), wherein the heat exchanger shell (1) is provided with a hot flow inlet tube, a hot flow outlet tube, a cold flow inlet tube and a cold flow outlet tube, and the plurality of groups of heat exchange tube bodies (5) are arranged inside the heat exchanger shell (1) via a plurality of groups of supporting devices, and the plurality of groups of supporting devices are distributed in sequence at equal intervals along the axial direction of the heat exchanger shell (1); The support device comprises a support plate and a frame, wherein the support plate and the frame are both regular hexagons in axial projection along the heat exchanger shell (1), the support plate is arranged on the inner side wall of the frame, a plurality of groups of heat exchange tube bodies (5) are fixedly connected to the inner side wall of the support plate, and the plurality of groups of heat exchange tube bodies (5) are connected to the inner side of the heat exchanger shell (1) via the support plate and the frame.

2. The support device for heat exchange tubes of a high flux tube heat exchanger according to claim 1, characterized in that: The frame comprises an upper frame (3) and a lower frame (2); the upper frame (3) and the lower frame (2) are symmetrically arranged up and down with the plane where the axis of the heat exchanger shell (1) is located as the center; and a first clamping structure for clamping the support plate is arranged between the opposite sides of the upper frame (3) and the lower frame (2).

3. The support device for heat exchange tubes of a high flux tube heat exchanger according to claim 2, characterized in that: The first clamping structure comprises two groups of clamping slots (7), and the two groups of clamping slots (7) are respectively arranged between opposite sides of the upper frame (3) and the lower frame (2).

4. The support device for heat exchange tubes of a high flux tube heat exchanger according to claim 3, characterized in that: The support plate is composed of a plurality of groups of support bars (4) distributed vertically, a second clamping structure for mutual plugging is provided between any two adjacent groups of the support bars (4), a fixing structure for fixing the heat exchange tube body (5) is also provided between any two adjacent groups of the support bars (4), and a flow structure for increasing the flow rate is provided on the inner wall of the support bar (4).

5. The support device for heat exchange tubes of a high flux tube heat exchanger according to claim 4, characterized in that: The thickness of the support plate is consistent with the width of the inner side walls of the two groups of the clamping slots (7), and the support plate is clamped and fixed to the frame via the clamping slots (7).

6. The support device for heat exchange tubes of a high flux tube heat exchanger according to claim 4, characterized in that: The second clamping structure comprises a plurality of groups of docking pins (404) and docking holes (403); the plurality of groups of docking pins (404) are respectively arranged on the lower walls of the plurality of groups of support bars (4) except the lowermost group; the plurality of groups of docking holes (403) are respectively arranged on the upper walls of the plurality of groups of support bars (4) except the uppermost group; any two adjacent groups of support bars (4) are clamped with the docking pins (404) via the docking holes (403) on opposite sides.

7. A support device for heat exchange tubes of a high flux tube heat exchanger according to claim 6, characterized in that: The upper edge of the docking hole (403) and the end of the docking pin (404) away from the support bar (4) are both provided with a transition arc for facilitating docking and insertion.

8. The support device for heat exchange tubes of a high flux tube heat exchanger according to claim 4, characterized in that: The fixing structure comprises a plurality of groups of first semicircular grooves (401) and second semicircular grooves (402); the plurality of groups of first semicircular grooves (401) are respectively arranged on the upper walls of the plurality of groups of support bars (4) except the uppermost group; the plurality of groups of second semicircular grooves (402) are respectively arranged on the lower walls of the plurality of groups of support bars (4) except the lowermost group; the first semicircular grooves (401) and the second semicircular grooves (402) between opposite sides of any two adjacent groups of support bars (4) are opposed to each other up and down and form a circular clamping hole; the plurality of groups of heat exchange tube bodies (5) are respectively fixed through the plurality of groups of circular clamping holes.

9. The support device for heat exchange tubes of a high flux tube heat exchanger according to claim 4, characterized in that: The flow structure comprises a plurality of groups of flow holes (6), wherein the plurality of groups of flow holes (6) are respectively arranged on the inner walls of the plurality of groups of support bars (4), and the axis lines of the plurality of groups of flow holes (6) are parallel to the axis line of the heat exchanger shell (1).

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