A membrane tube panel movable thermal correction device and correction method

Abstract

The application provides a movable thermal correction device and correction method for a membrane tube panel, and the movable thermal correction device for the membrane tube panel comprises a rolling support, a top support, a clamping support and a platform, the rolling support, the top support and the clamping support are arranged above the platform, the rolling support comprises at least two needle roller bearings, the top support and the clamping support are arranged between the two needle roller bearings, and the platform is provided with an electromagnetic induction heater and a supporting device; the application has the beneficial effects that the product tube panel is moved while the correction point is fixed, the rolling support, the top support and the clamping support are combined to realize the operation of the translation, turning and rapid correction of the product tube panel; the clamping support forms a closed rectangular cavity with high rigidity, and the product tube panel is enclosed in the rectangular cavity composed of the base and the pressing plate during the correction of the product tube panel, so that the correction safety of the tube panel is improved.

Description

Technical Field

[0001] This invention relates to the field of tube screen calibration device technology, and in particular to a movable thermal calibration device and calibration method for membrane tube screens. Background Technology

[0002] Currently, with the improvement of boiler parameters, the material grade of the tube panels in the boiler is also gradually improving. The conventional gantry horizontal splicing welding method is usually adopted. After the welding is completed, the tube panels are very prone to "S" shaped side bends in the axial direction. The tube panel products need to be corrected in the future. The existing correction device does not take into account that due to the large number of positions that need to be corrected and the large size of the tube panels, they need to be constantly translated and rotated, which is quite difficult. Summary of the Invention

[0003] To overcome the aforementioned problems in the prior art, the present invention provides a movable thermal correction device and correction method for membrane tube screens.

[0004] This invention discloses a movable thermal correction device for a membrane tube screen, comprising a rolling bracket, a top support bracket, a clamping bracket, and a platform. The rolling bracket, the top support bracket, and the clamping bracket are all disposed above the platform. The rolling bracket includes at least two needle roller bearings, and the top support bracket and the clamping bracket are disposed between the two needle roller bearings. An electromagnetic induction heater and a support device are disposed on the platform.

[0005] Based on this, the rolling support also includes gears, chains and motors. The bottom of the needle roller bearing is fixed on the platform, the head of the needle roller bearing is provided with gears, the gears of adjacent needle roller bearing heads are connected to each other by chains, and the outer needle roller bearing is provided with a motor.

[0006] Based on this, the top support bracket includes a support plate, a steel plate and a bottom plate of the top support bracket. The support plate is L-shaped, the bottom plate of the top support bracket is located on both sides of the support plate, and the steel plate is located in the middle of the support plate and is arranged perpendicular to the support plate.

[0007] Based on this, the clamping bracket includes a base, a clamping bracket bottom plate, and a pressure plate. The clamping bracket bottom plate is disposed at both ends of the base, and the pressure plate is disposed on the side of the base. The upper and lower ends of the pressure plate are fixed by pins and bolts, respectively.

[0008] Based on this, the support device adopts a hydraulic jack, a positioning plate is set on the platform, a hydraulic jack is fixed on the positioning plate, the hydraulic jack and the positioning plate are fixed by a binding ring, and a semi-circular plate is installed on the head of the hydraulic jack.

[0009] Based on this, infrared emitting lights are installed at both ends of the platform.

[0010] Based on this, the electromagnetic induction heater is arranged opposite the hydraulic jack, and the electromagnetic induction heater is set in a "U" shape.

[0011] Based on this, the height of the upper surface of the rolling bracket is the same as the height of the support plate in the top support bracket and the height of the base in the clamping bracket.

[0012] Based on this, the pressure plate includes a first connecting part and a second connecting part, which are combined into a "hook" shape. The upper part of the pressure plate is provided with a through hole for installation with a pin, and a deformation groove is provided at the connection between the first connecting part and the second connecting part.

[0013] A movable thermal calibration method for a membrane tube screen includes the following steps:

[0014] Step 1: Based on the specifications and dimensions of the tubes in the tube panel, select a semi-circular plate of the corresponding specifications and dimensions at the head of the hydraulic jack, determine the installation position of the top support bracket on the platform, and mark the area that needs to be corrected on the tube panel according to the deflection of the tube panel.

[0015] Step 2: Place the tube screen on the rolling bracket, top support bracket, and clamping bracket, close the pressure plate in the clamping bracket, and seal the tube screen in the rectangular cavity formed by the base and the pressure plate;

[0016] Step 3: By controlling the rotation of the motor, the tube screen can be moved horizontally on the rolling support, and the tube screen correction area is moved to the position of the hydraulic jack head.

[0017] Step 4: Install the electromagnetic induction heater opposite the hydraulic jack, and insert the inner part of the electromagnetic induction heater into the tube screen to heat the tube screen correction area. The hydraulic jack and the support bracket support each other for correction.

[0018] Step 5: Embed the tube screen into the pressure plate, remove the pin, open the pressure plate, and manually apply a downward force to make the tube screen fall out of the first and second connecting parts. Flip the tube screen 180 degrees and correct it again using the method in Step 4.

[0019] Step 6: After calibration is complete, remove the pin, open the pressure plate, and separate the tube screen from the calibration device.

[0020] Compared with the prior art, the beneficial effects of this invention are as follows: The calibration point remains stationary while the tube screen moves. By combining the rolling bracket, top support bracket, and clamping bracket, the tube screen can be moved, flipped, and quickly corrected. The clamping bracket forms a closed rectangular cavity with extremely high rigidity. During the tube screen correction process, the tube screen is enclosed in the rectangular cavity formed by the base and the pressure plate, significantly improving the safety of the tube screen correction. The pressure plate is a "hook" shape formed by the first and second connecting parts. The tube screen is embedded in the middle of the first and second connecting parts, and the width of the tube screen is smaller than the second connecting part, ensuring it will not fall off. Flipping the pressure plate enables the tube screen to be automatically flipped 180 degrees. The rolling bracket enables the horizontal movement of the tube screen. Combined with the top support bracket and hydraulic jack, it is possible to quickly support and correct different positions of the tube, improving the "S"-shaped side bend and wave phenomenon of the tube screen. While ensuring product quality, it significantly shortens the product manufacturing cycle. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the tube screen structure;

[0022] Figure 2 This is a schematic diagram of the tube screen structure;

[0023] Figure 3 This is a schematic diagram of the tube screen structure;

[0024] Figure 4 This is a top view schematic diagram of the movable thermal correction device for membrane tube screen of the present invention;

[0025] Figure 5 This is a schematic diagram of the placement structure of the tube screen and the rolling support of the present invention;

[0026] Figure 6 This is a schematic diagram of the placement structure of the tube screen and the top support bracket of the present invention;

[0027] Figure 7 This is a schematic diagram of the placement structure of the tube screen and clamping bracket of the present invention;

[0028] Figure 8 This is a top view schematic diagram of the top support structure of the present invention;

[0029] Figure 9 This is a schematic diagram of the side structure of the top support bracket of the present invention;

[0030] Figure 10 A top view schematic diagram of the clamping bracket of the present invention;

[0031] Figure 11 Schematic diagram of the side structure of the clamping bracket of the present invention;

[0032] Figure 12 This is a schematic diagram of the installation structure of the electromagnetic induction heater and the tube screen of the present invention;

[0033] Figure 13 This is a schematic diagram of the support device structure of the present invention;

[0034] Figure 14 This is a schematic diagram of the structure of the tube screen in the state of waiting to be flipped;

[0035] Figure 15 This is a schematic diagram of the structure of the tube screen in flip state 1;

[0036] Figure 16 This is a schematic diagram of the structure of the tube screen in flip state 2;

[0037] Figure 17 This is a schematic diagram of the structure of the tube screen flipped 180 degrees;

[0038] Figure 18 yes Figure 4 AA to view

[0039] In the diagram: 0. Tube screen; 1. Rolling bracket; 1-1. Needle roller bearing; 1-2. Gear; 1-3. Chain; 1-4. Motor; 2. Top support bracket; 2-1. Support plate; 2-2. Steel plate; 2-3. Top support bracket base plate; 3. Clamping bracket; 3-1. Base; 3-2. Clamping bracket base plate; 3-3. Pressure plate; 3-3-1. Deformation groove; 3-3-2. Second connecting part; 3-3-3. First connecting part; 3-4. Pin; 3-5. Pin; 4. Screw; 5. Positioning plate; 6. Binding ring; 7. Hydraulic jack; 8. Semicircular plate; 9. Platform; 10. Electromagnetic induction heater; 11. Infrared emitting lamp. Detailed Implementation

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0041] refer to Figure 1 , Figure 2 and Figure 3 A type of tube screen 0 consists of 6 tubes, which are welded together by flat steel. The width is set as L1, with a value range of 500-1000mm, and the length is set as L2, with a value range of 10-15m. The outer diameter of the tubes in tube screen 0 is set as Φ1, with a value range of 20-100mm. For alloy steel and stainless steel tube screen products of the above structural type, the conventional gantry horizontal splicing welding method is adopted. After the welding is completed, tube screen 0 is very prone to "S" shaped side bends in the axial direction, with the side bend value set as S1, with a value range of 5-30mm, which requires correction.

[0042] This invention discloses a movable thermal correction device for a membrane tube screen, with reference to... Figure 4 and Figure 18 The system includes a rolling support 1, a top support 2, a clamping support 3, and a platform 9. The rolling support 1, the top support 2, and the clamping support 3 are all mounted on the platform 9 with screws 4. The tube screen 0 is placed on the rolling support 1, the top support 2, and the clamping support 3. An electromagnetic induction heater 10 and a support device are provided on the platform 9. Infrared emitting lamps 11 are installed at both ends of the platform 9 to detect the straightness of the tube screen 0 and to detect the deflection value of the tube screen 0, thereby marking the thermal correction position.

[0043] refer to Figure 4 and Figure 5 The tube screen 0 that needs to be calibrated is placed horizontally on the rolling support 1. The rolling support 1 includes four needle roller bearings 1-1, gears 1-2, chains 1-3 and motors 1-4. The bottom of the needle roller bearings 1-1 is welded to the platform 9. The head of the needle roller bearings 1-1 is equipped with gears 1-2. The gears 1-2 at the heads of adjacent needle roller bearings 1-1 are connected to each other by chains 1-3. The leftmost one is the first one. The first needle roller bearing 1-1 is equipped with a motor 1-4.

[0044] refer to Figures 6-11 There are two support brackets, 2 and 3, respectively located between the first and second, and the third and fourth needle roller bearings 1-1. The support bracket 2 includes a support plate 2-1, a steel plate 2-2, and a base plate 2-3. The support plate 2-1 is L-shaped. There are four base plates 2-3, located at both ends of the support plate 2-1, with the parts arranged in a cross pattern for mounting screws 4 to fix the support bracket 2 to the platform 9. The steel plate 2-2 is located in the middle of the support plate 2-1, perpendicular to the support plate 2-1, and serves to support the tube screen 0. The clamping bracket 3 includes a base 3-1, a clamping bracket base plate 3-2, and a pressure plate 3-3. The base 3-1 is rectangular. The clamping bracket base plate 3-2 is located at both ends of the base 3-1 and is used to install screws 4, thereby fixing the clamping bracket 3 to the platform 9. The pressure plate 3-3 is located on the side of the base 3-1. The upper and lower ends of the pressure plate 3-3 are fixed to the base 3-1 by pins 3-4 and pins 3-5, respectively. During installation, ensure that the height of the upper surface of the rolling bracket 1 is the same as the height of the support plate 2-1 in the top support bracket 2 and the height of the base 3-1 in the clamping bracket 3, which is K1.

[0045] The pressure plate 3-3 includes a first connecting part 3-3-3 and a second connecting part 3-3-2. The first connecting part 3-3-3 and the second connecting part 3-3-2 are combined into a "hook" shape. The upper part of the pressure plate 3-3 has a through hole for installation with the pin 3-4. The connection between the first connecting part 3-3-3 and the second connecting part 3-3-2 has a deformation groove 3-3-1 to facilitate opening deformation. The tube screen 0 is embedded in the middle position of the first connecting part 3-3-3 and the second connecting part 3-3-2. The width of the tube screen is set to L1, and the value range of L1 is set to 500~ 1000mm, L1 is less than the length of the second connecting part 3-3-2. Without any other external force, the tube screen 0 will not fall off by its own weight. The pressure plate 3-3 in the clamping bracket 3 is closed and the tube screen 0 is sealed in the rectangular cavity formed by the base 3-1 and the pressure plate 3-3 by the pin 3-5. By controlling the motor 1-4 to rotate forward or backward, the needle roller bearing 1-1 can be made to rotate clockwise or counterclockwise at the same time, thereby driving the tube screen 0 to move horizontally to the left or right on the rolling bracket 1.

[0046] After confirming the location requiring correction, move the area of ​​the tube panel 0 that needs correction to the head position of the hydraulic jack 7. The support device and electromagnetic induction heater 10 are positioned in the middle of the platform 9, specifically between the second and third needle roller bearings 1-1. (Refer to...) Figure 13 The support device uses a hydraulic jack 7. A positioning plate 5 is installed on the platform 9, and the hydraulic jack 7 is fixed on the positioning plate 5. The hydraulic jack 7 and the positioning plate 5 are fixed together by a binding ring 6. A semi-circular plate 8 is installed on the head of the hydraulic jack 7. (See reference) Figure 12 The electromagnetic induction heater 10 is set in a "U" shape. The inner section of the electromagnetic induction heater 10 is inserted into the tube screen 0. The distance between the inner sections of the electromagnetic induction heater 10 is set to H1, where H1 is 10mm larger than the outer diameter of the tube in the tube screen Φ1. The semi-circular plate 8 contacts the tube in the tube screen 0. The tube is supported by the hydraulic jack 7. At this time, the other side is supported by the support bracket 2 to realize the straightening action of the tube screen 0 and correct the tube screen 0.

[0047] Figure 14 , Figure 15 , Figure 16 and Figure 17When the tube screen 0 needs to be flipped, it is embedded in the first connecting part 3-3-3 and the second connecting part 3-3-2. The pin 3-5 is removed, and the pressure plate 3-3 is opened. Since it is connected by the pin 3-4, the pressure plate 3-3 can rotate relative to the base 3-1. The rotation angle is set to 'a', and the angle range of 'a' is 0° to 160°. After the first connecting part 3-3-3 and the second connecting part 3-3-2 are opened, when the tube screen 0 needs to be flipped, a downward force is manually applied to the tube screen 0, which can make the tube screen 0 fall from the hook area, thus achieving the purpose of flipping the tube screen 0. That is, the tube screen A side, which was originally facing upward, is flipped 180 degrees to face downward; the tube screen B side, which was originally facing downward, is flipped 180 degrees to face upward. The semi-circular plate 8 contacts the tube in the tube screen 0 again, and the hydraulic jack 7 supports the tube, thus realizing the straightening action of the tube screen 0.

[0048] A movable thermal calibration method for a membrane tube screen includes the following steps:

[0049] Step 1: Based on the specifications and dimensions of the pipes in the tube panel 0, select a semi-circular plate 8 of the corresponding specifications and dimensions at the head of the hydraulic jack 7 to determine the installation position of the top support bracket 2 on the platform 9. The top support bracket 2 includes a support plate 2-1, a steel plate 2-2, and a top support bracket base plate 2-3. The support plate 2-1 is L-shaped. There are 4 base plates 2-3, which are respectively located at the two ends of the support plate 2-1. The parts are arranged in a cross pattern for installing screws 4, thereby fixing the top support bracket 2 to the platform 9. The steel plate 2-2 is set in the middle of the support plate 2-1 and is arranged perpendicular to the support plate 2-1 to support the tube panel 0. Infrared emitting lamps 11 are installed at both ends of the platform 9 to detect the straightness of the tube panel 0 and to detect the deflection value of the tube panel 0. According to the deflection of the tube panel 0, the area that needs to be corrected is marked on the tube panel 0.

[0050] Step 2: Place the tube screen 0 on the rolling bracket 1, the top support bracket 2, and the clamping bracket 3. The clamping bracket 3 includes a base 3-1, a clamping bracket base plate 3-2, and a pressure plate 3-3. The base 3-1 is rectangular. The clamping bracket base plate 3-2 is located at both ends of the base 3-1 for mounting screws 4, thereby fixing the clamping bracket 3 to the platform 9. The pressure plate 3-3 is located on the side of the base 3-1. The upper and lower ends of the pressure plate 3-3 are fixed to the base 3-1 by pins 3-4 and pins 3-5, respectively. During installation, ensure that the height of the upper surface of the rolling bracket 1 is the same as the height of the support plate 2-1 in the top support bracket 2 and the height of the base 3-1 in the clamping bracket 3. The pressure plate 3-3 includes a first connecting part 3-3-3 and a second connecting part 3-3-2. The first connecting part 3-3 and the second connecting part 3-3-2 are combined into a "hook" shape. The upper part of the pressure plate 3-3 is provided with a through hole for installation with the pin 3-4. The connection between the first connecting part 3-3-3 and the second connecting part 3-3-2 is provided with a deformation groove 3-3-1 to facilitate opening deformation. The tube screen 0 is embedded in the middle position of the first connecting part 3-3-3 and the second connecting part 3-3-2. The width of the tube screen is set to L1. The value range of L1 for tube screen 0 is set to 500~1000mm. L1 is less than the length of the second connecting part 3-3-2. Without other external forces, the tube screen 0 will not fall off by its own weight. The pressure plate 3-3 in the clamping bracket 3 is closed and tightened. The tube screen 0 is sealed in the rectangular cavity formed by the base 3-1 and the pressure plate 3-3 by the pin 3-5.

[0051] Step 3: By controlling the motors 1-4 to rotate forward or reverse, the needle roller bearings 1-1 can be made to rotate clockwise or counterclockwise synchronously, thereby driving the tube screen 0 to move horizontally to the left or right on the rolling bracket 1, and moving the tube screen 0 correction area to the head position of the hydraulic jack 7.

[0052] Step 4: Install the electromagnetic induction heater 10 opposite the hydraulic jack 7, and insert the inner end of the electromagnetic induction heater 10 into the tube screen 0 to heat the correction area of ​​the tube screen 0. The hydraulic jack 7 and the support bracket 2 support each other for correction.

[0053] Step 5: When the tube screen 0 needs to be flipped, insert the tube screen 0 into the first connecting part 3-3-3 and the second connecting part 3-3-2, remove the pin 3-5, and open the pressure plate 3-3. Since it is connected by the pin 3-4, the pressure plate 3-3 can rotate relative to the base 3-1 to open. The rotation angle is set to a, and the angle range of a is 0°~160°. After the first connecting part 3-3-3 and the second connecting part 3-3-2 are opened, when the tube screen 0 needs to be flipped, by manually applying a downward external force to the tube screen 0, the tube screen 0 can fall from the hook area, thus achieving the purpose of flipping the tube screen 0. That is, the tube screen A side, which was originally facing upward, is flipped 180 degrees to face downward, and the tube screen B side, which was originally facing downward, is flipped 180 degrees to face upward. The semi-circular plate 8 contacts the tube in the tube screen 0 again, and the hydraulic jack 7 supports the tube to achieve the straightening action of the tube screen 0. The correction is then performed again in the manner of step 4.

[0054] Step 6: After calibration is complete, remove pin 3-6, open clamping bracket pressure plate 3-3, and separate tube screen 0 from calibration device.

[0055] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0056] In this invention, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", "pad" and other such terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A calibration method for a movable thermal calibration device for a membrane tube screen, characterized in that... A movable thermal correction device for membrane tube screens is adopted. The device includes a rolling support, a top support, a clamping support, and a platform. The rolling support, top support, and clamping support are all mounted above the platform. The rolling support includes two needle roller bearings, and the top support and clamping support are positioned between the two needle roller bearings. An electromagnetic induction heater and a support device are mounted on the platform. The clamping support includes a base, a clamping support base plate, and a pressure plate. The clamping support base plate is located at both ends of the base, and the pressure plate is located on the side of the base. The front and rear ends of the pressure plate are fixed by pins and bolts, respectively. The support device uses a hydraulic jack, and a positioning plate is mounted on the platform. A hydraulic jack is fixed on the positioning plate. The hydraulic jack is fixed to the positioning plate by a binding ring, and a semi-circular plate is installed on the head of the hydraulic jack. The electromagnetic induction heater is arranged opposite the hydraulic jack and is shaped like a "U". The pressure plate includes a first connecting part and a second connecting part, which are combined into a "hook" shape. The upper part of the pressure plate is provided with a through hole for installation with a pin shaft, and a deformation groove is provided at the connection between the first connecting part and the second connecting part. The top support bracket includes a support plate, a steel plate and a top support bracket base plate. The support plate is "L" shaped, and the top support bracket base plate is arranged on both sides of the support plate. The steel plate is arranged in the middle of the support plate and is perpendicular to the support plate. The correction method includes the following steps: Step 1: Based on the specifications and dimensions of the tubes in the tube panel, select a semi-circular plate of the corresponding specifications and dimensions at the head of the hydraulic jack, determine the installation position of the top support bracket on the platform, and mark the area that needs to be corrected on the tube panel according to the deflection of the tube panel. Step 2: Place the tube screen on the rolling bracket, top support bracket, and clamping bracket, close the pressure plate in the clamping bracket, and seal the tube screen in the rectangular cavity formed by the base and the pressure plate; Step 3: By controlling the rotation of the motor, the tube screen can be moved horizontally on the rolling support, and the tube screen correction area is moved to the position of the hydraulic jack head. Step 4: Install the electromagnetic induction heater opposite the hydraulic jack, and insert the inner part of the electromagnetic induction heater into the tube screen to heat the tube screen correction area. The hydraulic jack and the support bracket support each other for correction. Step 5: Embed the tube screen into the pressure plate, remove the pin, open the pressure plate, and manually apply a downward force to make the tube screen fall out of the first and second connecting parts. Turn the tube screen over 180 degrees and correct it again by following the steps in Step 4. Step 6: After calibration is complete, remove the pin, open the pressure plate, and separate the tube panel from the calibration device.

2. The correction method according to claim 1, characterized in that: The rolling support also includes gears, chains and motors. The bottom of the needle roller bearing is fixed on the platform, and the head of the needle roller bearing is provided with a gear. The gears of adjacent needle roller bearing heads are connected to each other by chains, and the outer needle roller bearing is provided with a motor.

3. The correction method according to claim 1, characterized in that: Infrared emitting lights are installed at both ends of the platform.

4. The correction method according to claim 3, characterized in that: The height of the upper surface of the rolling bracket is the same as the height of the support plate in the top support bracket and the height of the base in the clamping bracket.

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