Wheel type slideway mechanism and heat exchanger

Abstract

The utility model discloses a wheel type slide way mechanism and a heat exchanger, and belongs to the technical field of heat exchangers, the wheel type slide way mechanism comprises a plate type slide way arranged on a baffle plate; the number of the ball assemblies is at least one; each ball assembly is arranged between the two baffle plates; the ball assembly is installed on the plate type slide way. The ball assembly comprises a base frame, one side of the base frame is connected with the plate-type slideway, the other side of the base frame is provided with a roller path, a plurality of balls are arranged in the roller path, the balls can roll in the roller path, and the balls protrude out of an opening of the roller path; the heat exchanger comprises the wheel type slide way mechanism. The device is simple in structure, small in occupied space and easy to install; moreover, the tube bundle can be quickly drawn and mounted, and the tube body is effectively prevented from being scratched.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, and more specifically to a wheeled slideway mechanism and a heat exchanger. Background Art

[0002] At present, heat exchangers are developing in the direction of large-scale, but the extraction and installation of the tube bundle of large-scale heat exchangers is a difficult technical problem to solve. This problem will be faced during both factory production and on-site maintenance. If a conventional plate slide is used, the friction is too large, the extraction and installation are difficult, the speed is slow, and the cylinder is easily scratched. In order to reduce friction, a wheel structure is used in this field, but the wheel structure is complex and occupies a large space, resulting in the wheel structure occupying the heat exchange tube layout space, thereby increasing the size of the heat exchanger.

[0003] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a wheeled slide mechanism and a heat exchanger, which have simple structure, small space occupation and easy installation; and can realize the rapid extraction and installation of the tube bundle and effectively avoid scratching the cylinder body.

[0005] The utility model adopts the following technical scheme: a wheeled slide mechanism, comprising:

[0006] A plate slide, wherein the plate slide is mounted on a baffle;

[0007] A ball assembly, at least one of which is provided; each ball assembly is provided between two baffles; and the ball assembly is installed on the plate slide;

[0008] The ball assembly comprises a base frame, one side of the base frame is connected to the plate slide, and the other side is provided with a rolling track, in which a plurality of balls are arranged, and the balls can roll in the rolling track, and the balls protrude from the mouth of the rolling track.

[0009] Furthermore, the board slide is in the shape of a long strip, and is provided with two end inclined surfaces; the end inclined surfaces are arranged at both ends of the bottom surface of the board slide, and the angle between the end inclined surfaces and the vertical direction is α, 15°≤α≤20°.

[0010] Furthermore, a rectangular groove is provided on a side of the base frame away from the rolling track, and the base frame is clamped on the plate slideway through the rectangular groove.

[0011] Furthermore, the plate slide is provided with two side slopes; the side slopes are provided at the bottom of two side surfaces of the plate slide adjacent to the side walls of the rectangular groove, and the angle between the side slopes and the vertical direction is β, 2°≤β≤3°;

[0012] The height of the side slope is h, the depth of the rectangular groove is H, and Hh≥3mm.

[0013] Furthermore, the ball assembly is fixedly connected to the plate slide;

[0014] Alternatively, the ball assembly and the plate slide are detachably connected.

[0015] Furthermore, a mounting groove is provided on the outer periphery of the baffle, and the plate slide is inserted into the mounting groove; the outer side surface of the plate slide is not higher than the mouth of the mounting groove.

[0016] Furthermore, the cross section of the raceway is a large semicircle with an opening at the bottom, and both ends of the raceway extend to both ends of the base frame; blocking plates are provided at both ends of the raceway;

[0017] The ball is spherical, and the diameter of the ball matches the diameter of the raceway; the width of the raceway opening is smaller than the diameter of the ball; and the length of the base frame is 5 mm greater than the sum of the diameters of the multiple balls in the raceway.

[0018] Furthermore, a weight-reducing structure is provided on the plate slide; the weight-reducing structure is a weight-reducing hole or a weight-reducing groove.

[0019] Furthermore, when the ball assembly and the plate slide are detachably connected, a plurality of corresponding through holes are provided on the plate slide and the base frame, bolts are passed through the corresponding through holes, and are fixed by nuts to connect the plate slide and the base frame.

[0020] A heat exchanger, comprising the wheeled slide mechanism, wherein the balls of the wheeled slide mechanism are in rolling contact with the inner wall of the heat exchanger cylinder;

[0021] The wheeled slide mechanisms are arranged in pairs at the bottom side and / or the top side of the baffle, and the two wheeled slide mechanisms arranged in pairs are symmetrically arranged around the center of the tube bundle.

[0022] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0023] 1. The plate slide of the utility model is arranged in the installation groove of the baffle plate, and the ball assembly is fixed on the plate slide, which not only occupies a small space, but is easy and convenient to remove and install; it can also realize the rapid removal and installation of the tube bundle and effectively avoid scratching the cylinder body.

[0024] 2. The utility model has a simple structure and is easy to install; it can be prefabricated in batches in actual production.

[0025] 3. The ball bearing assembly and the plate slideway of the utility model are detachably connected, and can be quickly replaced at a low cost.

[0026] 4. The utility model arranges end bevels and side bevels on the plate slideway, which reduces the difficulty of installing the ball assembly and avoids scratching the cylinder during the installation process.

[0027] 5. The plate slide of the utility model is completely inserted into the installation groove of the baffle, which reduces the space occupied by the device in the cylinder, thereby reducing the diameter of the cylinder, and does not increase the distance between the baffle and the cylinder.

[0028] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of Example 1;

[0030] Figure 2 is a schematic diagram of another angle of embodiment 1;

[0031] Figure 3 yes Figure 1 Middle AA section view;

[0032] Figure 4 It is the front view of the ball assembly;

[0033] Figure 5 This is the front view of the board slide;

[0034] Figure 6 It is the left view of the board slide;

[0035] Figure 7 is a schematic diagram of the base frame in Example 1;

[0036] Figure 8 is a schematic structural diagram of Example 2;

[0037] Fig. 9 It is a schematic diagram of the base frame in Example 2.

[0038] In the figure,

[0039] 1-plate slide, 2-baffle, 3-base frame, 4-ball, 5-roller, 6-end slope, 7-side slope, 8-rectangular groove, 9-blocking plate, 10-installation groove, 11-bolt, 12-through hole, 13-heat exchanger cylinder. DETAILED DESCRIPTION

[0040] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0041] Example 1

[0042] like Figure 1-7As shown, this embodiment provides a wheeled slide mechanism, including a plate slide 1 and a ball assembly; the plate slide 1 is installed on the baffle 2; and the ball assembly is installed on the plate slide 1.

[0043] The ball assembly includes a base frame 3 , one side of which is connected to the plate slide 1 , and the other side of which is provided with a raceway 5 , in which a plurality of balls 4 are arranged, and the balls 4 can roll in the raceway 5 , and the balls 4 protrude from the mouth of the raceway 5 .

[0044] The base frame 3 is formed by machining steel, and a rectangular groove 8 is provided on one side of the base frame 3 away from the raceway 5 , and the base frame 3 is clamped on the plate slideway 1 through the rectangular groove 8 .

[0045] The cross section of the raceway 5 is a large semicircle with an opening at the bottom, and both ends of the raceway 5 extend to both ends of the base frame 3 to facilitate the installation of the balls 4; blocking plates 9 are provided at the two ends of the raceway 5 to block the raceway 5 from both ends after the balls 4 are loaded into the raceway 5 to prevent the balls 4 from escaping from the raceway 5.

[0046] The width of the opening of the raceway 5 is smaller than the diameter of the balls 4 , so as to prevent the balls 4 from leaking out from below the raceway 5 .

[0047] The length of the base frame 3 is 5 mm greater than the sum of the diameters of the plurality of balls 4 in the raceway 5 , thus meeting the rolling requirements of the balls 4 .

[0048] The ball 4 is spherical, and the diameter of the ball 4 matches the diameter of the raceway 5 . Preferably, the diameter of the ball 4 is slightly smaller than the diameter of the raceway 5 , so as to facilitate the installation of the ball 4 from both ends of the raceway 5 .

[0049] The plate slide 1 is in the shape of a long strip, and is provided with two end bevels 6 and two side bevels 7. The end bevels 6 are provided at both ends of the bottom surface of the plate slide 1, and the angle between the end bevels 6 and the vertical direction is α, 15°≤α≤20°. The function of the end bevels 6 is to facilitate the entry and exit of the tube bundle and avoid scratching the cylinder when the tube bundle is pulled out. The side bevels 7 are provided at the bottom of the two side surfaces of the plate slide 1 adjacent to the side walls of the rectangular groove 8, and the angle between the side bevels 7 and the vertical direction is β, 2°≤β≤3°, the height of the side bevels 7 is h, and the depth of the rectangular groove 8 is H, Hh≥3mm. The function of the side bevels 7 is to facilitate the installation of the plate slide 1 into the rectangular groove 8.

[0050] Furthermore, the plate slide 1 is installed on the outer peripheral surface of multiple baffles 2, and a mounting groove 10 is opened on the outer periphery of the baffle 2. The plate slide 1 is inserted into the mounting groove 10. The outer side surface of the plate slide 1 is not higher than the mouth of the mounting groove 10, that is, the depth of the mounting groove 10 is not less than the height of the plate slide 1, so that the plate slide 1 can be completely inserted into the mounting groove 10 of the baffle 2, which can reduce the space occupied by the device and reduce the distance between the baffle 2 and the heat exchanger cylinder.

[0051] Furthermore, after the plate slide 1 is inserted into the mounting groove 10 of the baffle plate 2, the plate slide 1 and the baffle plate 2 are fixedly connected by welding or other connection methods.

[0052] Furthermore, a weight-reducing structure is provided on the plate slide 1 to reduce the weight of the heat exchanger. The weight-reducing structure includes a weight-reducing hole, a weight-reducing groove, and the like.

[0053] Furthermore, at least one ball assembly is provided, and the number of ball assemblies is selected according to the weight of the tube bundle in actual use. Each ball assembly is provided between two baffles 2 .

[0054] Example 2

[0055] like Figure 8-9 As shown, this embodiment provides a wheeled slide mechanism, and the difference between this embodiment and embodiment 1 is that: the plate slide 1 and the baffle 2 are detachably connected; specifically, the plate slide 1 and the base frame 3 are provided with a plurality of corresponding through holes 12, and bolts 11 are passed through the corresponding through holes 12, and are fixed by nuts to connect the plate slide 1 and the base frame 3; in this embodiment, the plate slide 1 and the baffle 2 are detachably connected, which not only reduces welding but also facilitates disassembly and replacement.

[0056] Example 3

[0057] This embodiment provides a heat exchanger, including the wheeled slide mechanism described in Embodiment 1 and Embodiment 2, wherein the balls 4 of the wheeled slide mechanism are in rolling contact with the inner wall of the heat exchanger cylinder 13 .

[0058] The wheeled slide mechanisms are arranged in pairs at the bottom side and / or the top side of the baffle, and the two wheeled slide mechanisms arranged in pairs are symmetrically arranged around the center of the tube bundle.

[0059] The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical enlightenment of the utility model is also within the protection scope of the utility model.

Claims

1. A wheeled slide mechanism, characterized in that: include: A plate slide (1), wherein the plate slide (1) is mounted on a baffle (2); A ball assembly, at least one ball assembly is provided; each ball assembly is provided between two baffles (2); the ball assembly is installed on the plate slide (1); The ball assembly comprises a base frame (3), one side of the base frame (3) is connected to the plate slide (1), and the other side is provided with a rolling track (5), a plurality of balls (4) are provided in the rolling track (5), the balls (4) can roll in the rolling track (5), and the balls (4) protrude from the mouth of the rolling track (5).

2. A wheeled slide mechanism as claimed in claim 1, characterized in that: The plate slide (1) is in the shape of a long strip, and is provided with two end inclined surfaces (6); the end inclined surfaces (6) are provided at two ends of the bottom surface of the plate slide (1), and the angle between the end inclined surfaces (6) and the vertical direction is α, 15°≤α≤20°.

3. A wheeled slide mechanism as claimed in claim 1, characterized in that: A rectangular groove (8) is provided on the side of the base frame (3) away from the rolling track (5), and the base frame (3) is clamped on the plate slideway (1) through the rectangular groove (8).

4. A wheeled slide mechanism as claimed in claim 3, characterized in that: The plate slide (1) is provided with two side inclined surfaces (7); the side inclined surfaces (7) are provided at the bottom of two side surfaces of the plate slide (1) adjacent to the side walls of the rectangular groove (8); the angle between the side inclined surfaces (7) and the vertical direction is β, 2°≤β≤3°; The height of the side slope (7) is h, the depth of the rectangular groove (8) is H, and Hh≥3mm.

5. A wheeled slide mechanism as claimed in claim 1, characterized in that: The ball bearing assembly is fixedly connected to the plate slideway (1); Alternatively, the ball bearing assembly and the plate slide (1) are detachably connected.

6. A wheeled slide mechanism as claimed in claim 1, characterized in that: The baffle plate (2) is provided with a mounting groove (10) on its outer periphery, and the plate slide (1) is inserted into the mounting groove (10); the outer side surface of the plate slide (1) is not higher than the mouth of the mounting groove (10).

7. A wheeled slide mechanism as claimed in claim 1, characterized in that: The cross section of the raceway (5) is a large semicircle with an opening at the bottom, and both ends of the raceway (5) extend to both ends of the base frame (3); blocking plates (9) are provided at both ends of the raceway (5); The ball (4) is spherical, and the diameter of the ball (4) matches the diameter of the raceway (5); the width of the opening of the raceway (5) is smaller than the diameter of the ball (4); and the length of the base frame (3) is 5 mm greater than the sum of the diameters of the multiple balls in the raceway (5).

8. A wheeled slide mechanism as claimed in claim 1, characterized in that: The plate slide (1) is provided with a weight-reducing structure; the weight-reducing structure is a weight-reducing hole or a weight-reducing groove.

9. A wheeled slide mechanism as claimed in claim 5, characterized in that: When the ball bearing assembly and the plate slide (1) are detachably connected, the plate slide (1) and the base frame (3) are provided with a plurality of corresponding through holes (12), bolts (11) are passed through the corresponding through holes (12) and fixed by nuts, thereby connecting the plate slide (1) and the base frame (3).

10. A heat exchanger, characterized in that: It comprises the wheeled slide mechanism according to any one of claims 1 to 9, wherein the balls (4) of the wheeled slide mechanism are in rolling contact with the inner wall of the heat exchanger cylinder (13); The wheeled slide mechanisms are arranged in pairs at the bottom side and / or the top side of the baffle, and the two wheeled slide mechanisms arranged in pairs are symmetrically arranged around the center of the tube bundle.

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