Internal monitoring device of horizontal heat exchanger and installation method thereof

Abstract

The present invention relates to an internal monitoring device for a horizontal heat exchanger and an installation method thereof, comprising a moving module and a guide rail, wherein the guide rail path is a spiral line, the moving module comprises a rectangular block, a slide groove is provided on the upper end surface of the rectangular block, a slide plate sliding left and right is provided in the middle of the slide groove, a compression spring is fixed to the left end of the slide plate, a slider is provided on the right side of the slide plate, a left clamping block and a right clamping block are fixed to the upper end of the slider, a first through groove is provided on the opposite end surfaces of the two clamping blocks, a first roller is provided in each first through groove, a wing plate is fixed to the right side of the front and rear end surfaces of the rectangular block respectively, and an end surface of each wing plate away from the rectangular block is an inclined surface gradually approaching the rectangular block from left to right; the present invention provides a continuous moving path for the moving module used for detection by fixing a spiral guide rail between the tube plates of the horizontal condenser, and ensures monitoring without dead angles by utilizing the left and right widths of the moving module being equal to the width of the cavity in which it is located, thereby greatly reducing the monitoring cost and time.

Description

Technical Field

[0001] The invention relates to the field of pressure vessel monitoring, in particular to a horizontal heat exchanger internal monitoring device and an installation method thereof. Background Art

[0002] Horizontal heat exchangers are pressure vessels, so they should be used or tested in accordance with the use standards of pressure vessels. In particular, pressure vessels with a long service life will have certain risks. Improper operation during use or testing will have serious consequences. Therefore, in order to reduce the risk, pressure vessels need to be monitored regularly.

[0003] However, the horizontal heat exchanger has a complex internal structure and limited space, which makes it impossible for people to enter, and it is difficult for monitoring equipment to move freely inside the cylinder. Therefore, it needs to be disassembled for inspection or monitoring, which greatly increases the difficulty and cost of monitoring. Disassembly and assembly of the pressure vessel may even affect its subsequent service life. Summary of the invention

[0004] In order to solve the above problems, the present invention adopts a horizontal heat exchanger internal monitoring device and an installation method thereof, which solves the problem of difficulty in monitoring the horizontal heat exchanger.

[0005] The technical solution thereof is, comprising a mobile module and a guide rail;

[0006] The guide rail is an I-beam, and the guide rail path is a spiral line;

[0007] The left and right widths of the moving module are equal to the guide rail pitch, and include a rectangular block, an upper end face of the rectangular block is provided with a slide groove in the left and right directions, a slide plate in the middle of the slide groove can slide left and right along the slide groove, a compression spring is fixed to the left end of the slide groove, and the other end of the compression spring is fixed to the left end face of the slide groove, and the compression spring always gives the slide groove a force to return to the middle of the slide groove, and a slider that can slide left and right along the slide groove is provided on the right side of the slide groove, a left clamping block is fixed on the upper end of the slider, and a right clamping block is provided on the right end of the left clamping block, and the two clamping blocks can be fixed after being close to each other and fitted together, and a first through groove running through their respective front and rear end faces is respectively provided on the opposite end faces of the two clamping blocks, and a first roller with a vertical axis is provided in each first through groove, and a horizontally placed wing plate is respectively fixedly connected to the right sides of the front and rear end faces of the rectangular block, and an end face of each wing plate away from the rectangular block is an inclined surface that gradually approaches the rectangular block from left to right.

[0008] The left and right end faces of the rectangular block are respectively provided with second through grooves penetrating the front and rear end faces, and each second through groove is rotatably connected to a second roller placed vertically with two front and rear axes, and each second roller extends out of the second through groove, and the maximum spacing between the second rollers on the left and right sides is equal to the guide rail pitch.

[0009] A motor is fixed in the middle of the slider, a cavity is opened at the lower end of the left clamping block, the motor shaft faces upward and is placed in the cavity, a driving gear is fixed on the motor shaft, the shaft of the first roller on the left extends downward into the cavity and is fixedly connected to a driven gear, and the driven gear is meshed with the driving gear.

[0010] The left end surface of the wing plate is located to the left of the middle of the rectangular block, and the right end surface of the wing plate is flush with the right end surface of the rectangular block.

[0011] Buckles are fixed at the front and rear ends of the right clamp block, and clamping grooves corresponding to the positions of the buckles are opened at the front and rear ends of the left clamp block.

[0012] The first through slot is opened at an angle, and the inclination angle of the first through slot relative to the horizontal left and right directions is equal to the helical angle of the guide rail.

[0013] The right end of the slide groove and the right end of the slide block are both fixed with magnets, and the two magnets attract each other.

[0014] A camera and a lighting lamp are fixed on the lower end surface of the rectangular block, and the left and right camera ranges and lighting ranges are not less than the left and right widths of the mobile module.

[0015] The present invention fixes a spiral guide rail between the tube sheets of the horizontal heat exchanger so that the guide rail can just pass through the alternately arranged baffle openings to pass through each cavity, thereby providing a continuous moving path for a mobile module used for detection. The left and right widths of the mobile module are equal to the width of the cavity in which it is located, thereby ensuring that the camera system can monitor without blind spots. The inner wall of the horizontal heat exchanger can be completely monitored without disassembling it, thereby greatly reducing the monitoring cost and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the mobile module of the present invention.

[0017] Figure 2 It is a top view of the mobile module of the present invention.

[0018] Figure 3 It is a bottom view of the mobile module of the present invention.

[0019] Figure 4 It is a front cross-sectional view of the mobile module of the present invention.

[0020] Figure 5 For the present invention Figure 4 A is an enlarged view of the middle image.

[0021] Figure 6 This is a three-dimensional parts diagram of the first guide rail of the present invention.

[0022] Figure 7 For the present invention Figure 6 Enlarged view of B.

[0023] Figure 8 It is a schematic diagram of the installation method of the first guide rail and the movement method of the mobile module of the present invention.

[0024] Fig. 9 For the present invention Fig. 9 The enlarged diagram of the cooperation relationship between the first roller and the guide rail is shown in C. DETAILED DESCRIPTION

[0025] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0026] Depend on Figures 1 to 9 It is given that the present invention comprises a mobile module and a guide rail 1;

[0027] The guide rail 1 is an I-beam, and the path of the guide rail 1 is a spiral line;

[0028] The left and right widths of the movable module are equal to the pitch of the guide rail 1, and include a rectangular block 2, an upper end surface of the rectangular block 2 is provided with a slide groove 3 in the left and right directions, and a slide plate 4 that can slide left and right along the slide groove 3 is provided in the middle of the slide groove 3, and a compression spring is fixed to the left end of the slide plate 4, and the other end of the compression spring is fixed to the left end surface of the slide groove 3, and the compression spring always gives the slide plate 4 a force to return to the middle of the slide groove 3. A slider 5 that can slide left and right along the slide groove 3 is provided on the right side of the slide plate 4 in the slide groove 3, a left clamping block 6 is fixed on the upper end of the slider 5, and a right clamping block 7 is provided on the right end of the left clamping block 6, and the two clamping blocks can be fixed after being close to each other and fitted together. A first through groove 8 that runs through their respective front and rear end surfaces is respectively provided on the opposite end surfaces of the two clamping blocks, and each first through groove 8 has a first roller 9 with a vertically placed axis, and a horizontally placed wing plate 10 is fixedly connected to the right sides of the front and rear end surfaces of the rectangular block 2, and an end surface of each wing plate 10 away from the rectangular block 2 is an inclined surface that gradually approaches the rectangular block 2 from left to right.

[0029] The left and right end faces of the rectangular block 2 are respectively provided with second through grooves 11 that penetrate the front and rear end faces. A second roller 12 placed vertically with two front and rear axes is rotatably connected in each second through groove 11. Each second roller 12 extends out of the second through groove 11. The maximum spacing between the second rollers 12 on the left and right sides is equal to the pitch of the guide rail 1.

[0030] A motor 14 is fixed in the middle of the slider 5, a cavity 15 is opened at the lower end of the left clamp 6, the rotating shaft of the motor 14 faces upward and is placed in the cavity 15, a driving gear 16 is fixed on the rotating shaft of the motor 14, the rotating shaft of the left first roller 8 extends downward into the cavity 15 and is fixedly connected to a driven gear 17, and the driven gear 17 is meshed with the driving gear 16.

[0031] The left end surface of the wing plate 10 is located to the left of the middle of the rectangular block 2 , and the right end surface of the wing plate 10 is flush with the right end surface of the rectangular block 2 .

[0032] Buckles 18 are fixed to the front and rear ends of the right clamping block 7 , and slots corresponding to the positions of the buckles 18 are provided to the front and rear ends of the left clamping block 6 .

[0033] The first through slot 8 is opened at an angle, and the inclination angle of the first through slot 8 relative to the horizontal left and right direction is equal to the helical angle of the guide rail 1 .

[0034] Magnets are fixed to the right ends of the slide groove 3 and the slider 5, and the two magnets attract each other.

[0035] A camera and a lighting lamp are fixed on the lower end surface of the rectangular block 2, and the left and right camera ranges and lighting ranges are not less than the left and right widths of the mobile module.

[0036] The method for installing the internal monitoring device of a horizontal heat exchanger is characterized by comprising the following steps:

[0037] S1. Hand holes 21 communicating with the outside are respectively provided on the outer edge surfaces of the left and right ends of the horizontal heat exchanger cylinder 20;

[0038] S2. Fix the left and right ends of the guide rail 1 on the tube sheets 22 on the left and right sides of the horizontal heat exchanger cylinder 20 respectively, so that the guide rail 1 is spirally wound around the outer circumference of the heat transfer tube 23, and at the same time ensure that the guide rail 1 between every two adjacent baffles 24 (or the baffle 24 and the tube sheet 22) rotates exactly one and a half circles, so that the guide rail 1 can just pass through the opening of the baffle 24 and pass through the baffle 24.

[0039] It is worth mentioning that in order to prevent the mobile module from being interfered by structures such as liquid level gauges and thermometers when moving, monitoring instruments such as liquid level gauges and thermometers can be set on the heads on the left and right sides;

[0040] In order to ensure the strength of the guide rail 1, a support rod can be installed between the guide rail 1 and the heat transfer tube 23. If a support rod is installed, it is necessary to open a clearance groove connected to the first through groove at the upper end of the left clamp block 6 and the right clamp block 7 to avoid interference between the support rod and the two clamp blocks.

[0041] When the present invention is used, the hand hole 21 is first opened, and the mobile module is placed inside the horizontal heat exchanger barrel 20 through the right hand hole 21, and then the rectangular block 2 is kept horizontal, and the second rollers 12 on the left and right sides are respectively in contact with the baffle 24 and the tube sheet 22 on the far right, and the slider 5 is placed at the far right end of the slide groove 3, and the buckle 18 is opened to separate the left clamping block 6 from the right clamping block 7, and after the two clamping blocks are respectively placed on the left and right sides of the guide rail 1, the left clamping block 6 is again fitted with the right clamping block 7 and the two clamping blocks are re-fixed together through the buckle 18 and the slot, and the two first rollers 9 are slidably connected with the guide rail 1 to complete the fixing of the mobile module;

[0042] Start the motor 14, the camera and the lighting lamp. The motor 14 drives the driven gear 17 to rotate through the driving gear 16. The driven gear 17 drives the first roller 8 on the left to rotate, so that the slider 5 is fed to the left along the first guide rail 1 in a spiral manner. The rectangular block 2 moves vertically up and down along the cavity where it is located under the drive of the slider 5. Since the slide plate 4 is located in the middle of the slide groove 3, in the first half of the movement, the slider 5 does not contact the slide plate 4, and the rectangular block 2 will not be displaced laterally. When the rectangular block 2 passes the opening position of the left baffle plate 24 for the first time and the left end contacts the baffle plate 24 again, the slider 5 contacts the slide plate 4. After the slider 5 contacts the slide plate 4, the baffle plate 24 restricts the rectangular block 2 from moving left. The rectangular block 2 can only move in a left circle along the second guide rail 1 with the slider 5, and the compression spring on the left side of the slide plate 4 is compressed.

[0043] Until the rectangular block 2 passes the opening position of the left baffle plate 24 for the second time, under the clamping force of the first roller 9 and the guide rail 1, the movement mode of the slider 5 along the guide rail 1 will not change, and the rectangular block 2 is reset to the left under the elastic force of the compression spring. Under the action of the inertia force, the slider 5 moves to the right relative to the rectangular block 2 to the rightmost end of the slide groove 3 after separating from the slide plate 4. The magnet at the right end of the slide groove 3 and the magnet at the right end of the slider 5 attract each other to fix the slider 5 to the rectangular block 2, but the magnetism of the magnet cannot guarantee that the slider 5 can slide to the rightmost end relative to the slide groove 3 and be fixed to the rectangular block 2 by the inertia force every time. If the slider 5 does not slide to the rightmost end of the slide groove 3 after separating from the slide plate 4, the slider 5 continues to drive the rectangular block 2. Feed in a spiral direction to the left along the second guide rail 1 until the wing plate 10 in the forward direction of the rectangular block 2 contacts the upper edge of the opening of the baffle plate 24. Since the rectangular block 2 always moves tangentially along the cylinder 20 during the feeding process along the guide rail 1, the wing plate 10 on the front or rear side first contacts the baffle plate 24 when the rectangular block 2 passes the opening position of the baffle plate 24. Since the end surface of the wing plate 10 away from the rectangular block 2 is an inclined surface, under the guidance of the inclined surface, the rectangular block 2 will gradually move to the left until it completely enters the left cavity. At this time, the third roller 12 at the left end of the rectangular block 2 continues to contact the right end of the left baffle plate 24, and the rectangular block 2 is restricted from moving to the left again. The above process is repeated to realize the cross-cavity movement of the rectangular block 2.

[0044] Until the rectangular block 2 moves to the position of the hand hole 21 on the left side, the rectangular block 2 is separated from the guide rail 1 by opening the buckle 18 and is taken out through the hand hole 21 .

[0045] The device fixes the spiral first guide rail 1 on the outer circumference of the original horizontal heat exchanger heat transfer tube 23, and ensures that the first guide rail 1 rotates 1.5 times between every two baffles 24 (or between the baffle 24 and the tube sheet 22), so that the first guide rail 1 can rotate more than one circle in the cavity between every two baffles 24 and just pass through the opening position of each baffle 24 when the first guide rail 1 is alternately arranged in the opening direction of the baffle 24. In the case of limited internal space of the horizontal heat exchanger, a continuous moving path is provided for the rectangular block 2 to ensure the continuity of monitoring;

[0046] The device limits the left and right width of the mobile module so that it can be placed just between the two partitions 24 or between the partition 24 and the tube sheet 22, effectively limiting its displacement in the left and right directions, and the number of rotations of the guide rail 1 in each cavity is greater than one, ensuring that the mobile module can rotate a full circle so that the camera can monitor the inner wall of the cavity without blind spots;

[0047] The slide plate 4 is connected to the left end of the slide slot 13 by a compression spring, ensuring that the rectangular block 2 quickly passes through the opening under the elastic force of the compression spring after moving to the opening position of the baffle plate 24. Under the action of inertia, the magnet at the right end of the slider 5 and the magnet at the right end of the slide slot 3 attract and fix each other, ensuring that the rectangular block 2 can be completely placed in the new cavity. Even if the slider 5 fails to contact the right end of the slide slot 3, the wing plate 10 in the forward direction of the rectangular block 2 contacts the upper edge of the baffle plate 24 opening. Since the rectangular block 2 always moves along the tangential direction of the cylinder 20 during the feeding process along the guide rail 1, when the rectangular block 2 passes the opening position of the baffle plate 24, the wing plate 10 on the side close to the forward direction first contacts the baffle plate 24. Since the end face of the wing plate 10 away from the rectangular block 2 is an inclined surface, the rectangular block 2 will gradually move to the left under the guidance of the inclined surface until it completely enters the left cavity, avoiding the instability caused by placing the slider 5 on the rightmost side of the slide slot 3 only by inertia and magnet attraction.

[0048] The second rollers 12 are rotatably connected to the left and right sides of the rectangular block 2, respectively, so as to greatly reduce the tangential friction force of the baffle 24 or the tube sheet 22 on the rectangular block 2 when the rectangular block 2 moves in a circular motion along the first guide rail 1.

Claims

1. A horizontal heat exchanger internal monitoring device, characterized in that: comprising a moving module and a guide rail (1); The guide rail (1) is an I-beam, and the path of the guide rail (1) is a spiral line; The movable module has a left-right width equal to the pitch of the guide rail (1), and comprises a rectangular block (2). The upper end surface of the rectangular block (2) is provided with a left-right sliding groove (3). A slide plate (4) capable of sliding leftwards along the sliding groove (3) is provided in the middle of the sliding groove (3). A compression spring is fixed to the left end of the slide plate (4). The other end of the compression spring is fixed to the left end surface of the sliding groove (3). The compression spring always gives the slide plate (4) a force to return to the middle of the sliding groove (3). A slide plate (5) capable of sliding leftwards along the sliding groove (3) is provided in the sliding groove (3) and is located on the right side of the slide plate (4). The upper end of the slide plate (5) is provided with a A left clamping block (6) is fixed, and a right clamping block (7) is disposed at the right end of the left clamping block (6). The two clamping blocks can be fixed when they are close to each other and fit together. A first through groove (8) penetrating the front and rear end faces of the two clamping blocks is respectively provided on the opposite end faces of the two clamping blocks. A first roller (9) with a vertical axis is disposed in each first through groove (8). A horizontally disposed wing plate (10) is respectively fixedly connected to the right side of the front and rear end faces of the rectangular block (2). An end face of each wing plate (10) away from the rectangular block (2) is an inclined surface that gradually approaches the rectangular block (2) from left to right. The left and right end surfaces of the rectangular block (2) are respectively provided with second through slots (11) penetrating the front and rear end surfaces, and each second through slot (11) is rotatably connected to a second roller (12) vertically placed with two front and rear axes, and each second roller (12) extends out of the second through slot (11), and the maximum spacing between the second rollers (12) on the left and right sides is equal to the pitch of the guide rail (1); A motor (14) is fixed in the middle of the slider (5), a cavity (15) is opened at the lower end of the left clamping block (6), the rotating shaft of the motor (14) faces upward and is placed in the cavity (15), a driving gear (16) is fixed on the rotating shaft of the motor (14), the rotating shaft of the left first roller (9) extends downward into the cavity (15) and is fixedly connected to a driven gear (17), and the driven gear (17) is meshed with the driving gear (16); A camera and a lighting lamp are fixed to the lower end surface of the rectangular block (2), and the left and right camera ranges and lighting ranges are not less than the left and right widths of the mobile module.

2. The internal monitoring device of a horizontal heat exchanger according to claim 1, characterized in that: The left end surface of the wing plate (10) is located slightly to the left of the middle of the rectangular block (2), and the right end surface of the wing plate (10) is flush with the right end surface of the rectangular block (2).

3. The internal monitoring device of a horizontal heat exchanger according to claim 1, characterized in that: Buckles (18) are fixed to the front and rear ends of the right clamp block (7), and slots corresponding to the positions of the buckles (18) are provided to the front and rear ends of the left clamp block (6).

4. The internal monitoring device of a horizontal heat exchanger according to claim 1, characterized in that: The first through slot (8) is opened at an angle, and the inclination angle of the first through slot (8) relative to the horizontal left and right directions is equal to the helical angle of the guide rail (1).

5. The internal monitoring device of a horizontal heat exchanger according to claim 1, characterized in that: Magnets are fixed to the right end of the slide groove (3) and the right end of the slider (5), and the two magnets attract each other.

6. A method for installing a horizontal heat exchanger internal monitoring device according to any one of claims 1 to 5, characterized in that: The steps include: S1. Hand holes (21) communicating with the outside are respectively provided on the outer edge surfaces of the left and right ends of the horizontal heat exchanger cylinder (20); S2. The left and right ends of the guide rail (1) are respectively fixed to the tube sheets (22) on the left and right sides of the horizontal heat exchanger cylinder (20), so that the guide rail (1) is spirally wound around the outer circumference of the heat transfer tube (23), and at the same time, the guide rail (1) between every two adjacent baffles (24) or the guide rail (1) between the baffle (24) and the tube sheet (22) is rotated exactly one and a half turns, so that the guide rail (1) can just pass through the opening of the baffle (24) and pass through the baffle (24).

Images