Pipeline mounting device based on natural gas power generation project

Abstract

The pipeline mounting device based on the natural gas power generation project comprises a fixing unit used for being connected to a pipeline in a sleeving mode, a supporting unit is arranged on the fixing unit, and the supporting unit can adaptively support the fixing unit and the pipeline in a telescopic mode; the adjusting unit is used for adjusting the fixing position of the fixing unit; the restraining unit is used for restraining deformation of the pipeline in the radial direction during thermal expansion. The device is fixed to the ends of pipelines with different diameters, the pipelines are pre-tightened and aligned through the adjusting unit before welding, installation is convenient, after welding, the device is not disassembled, supporting and restraining are conveniently conducted on the pipelines, and the tedious process of pipeline installation is avoided through the integrated structure of pre-tightening installation and supporting and fixing; axial extension and axial rotation of the pipeline are restrained through the adjusting unit and the fixing unit, and radial deformation of the pipeline is restrained through the restraining unit.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline construction, in particular to a pipeline installation device based on a natural gas power generation project. Background Art

[0002] Pipeline is a device connected by pipes, pipe fittings and valves for conveying gas, liquid or fluid with solid particles. It has a wide range of uses, mainly used in water supply, drainage, heating, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, hydraulic engineering and various industrial devices. Among them, the use process and design conditions of pipelines used in natural gas power generation projects are not only harsh, but also need to withstand high temperature and high pressure, and the caliber is also increasing with the large-scale installation. In order to ensure the normal operation of the pipeline system, the pipeline needs to be fixedly installed to ensure the stability and safety of the pipeline system. At the same time, in order to reduce the possibility of leakage, the natural gas pipeline needs to be welded in the parts other than those that must be connected to the equipment and valves with flanges, but the welded pipeline will produce very large thermal stress. Excessive stress can easily cause weld cracking under extreme conditions, posing a great threat to the safe operation of the system.

[0003] For example, the invention patent with the authorization announcement number CN113084317A and the authorization announcement date July 9, 2021, and the name "A method for installing and adjusting a large-diameter high-temperature pipeline" includes a pipeline, on which a floating structure with an annular shape and a hollow interior is sleeved, the floating structure is filled with thermal insulation material, and a gap greater than the radial expansion of the pipeline is left between the inner diameter of the floating structure and the outer diameter of the pipeline; a baffle fixed to the outer wall of the pipeline is provided on one or both sides of the floating structure, the baffle is fitted with the side of the floating structure, and a positioning connecting plate is also provided on the floating structure, and the positioning connecting plate and the pull rod assembly One end is hinged, and the other end of the pull rod assembly is hinged to a support connecting plate, and the support connecting plate is fixed on a support frame, and the support frame is arranged next to the pipeline; an elastic support is provided under the floating structure, and two groups of guide brackets are provided at the bottom of the pipeline, which are respectively located on both sides of the floating structure; the guide bracket is installed on a guide support, and an anti-rotation baffle is provided on the guide support on both sides of the guide bracket; a group of guide brackets with an internal thermal insulation structure is provided on the top of the pipeline; one group of guide brackets at the top and bottom of the pipeline are arranged symmetrically up and down, and the elastic support is a spring support, and the spring support is fixedly connected to the bottom support. The invention not only achieves the purpose of fixing the pipeline, but also makes the thermal expansion of the high-temperature pipeline unconstrained, greatly reduces the stress level of the connection part, effectively avoids the possibility of cracks in the connection weld and process pipeline under long-term operation at high temperature, improves the reliability and safety of the fixed bracket and the process pipeline, realizes the linear displacement constraint of the pipeline in the axial direction through the tie rod combination structure that is connected to the stopper and floating structure combination on the pipeline at one end and connected to the load-bearing frame foundation at the other end, and at the same time, the expansion of the pipeline itself is not constrained; the floating structure is provided with thermal insulation material inside, and the tie rod structure works at a lower temperature and has sufficient strength to withstand a large axial force, and realizes the linear displacement constraint and rotation constraint of the pipeline in other directions through two sets of combined guides, ensuring that the other five degrees of freedom except the axial direction are constrained, and achieving the purpose of fixing the pipeline, for large-diameter pipelines, the joint action of the three sets of guide brackets can completely limit all displacements of the pipeline except the axial displacement, and work together with the tie rod assembly to achieve the purpose of fixing, and the weight of the floating structure is supported by a spring under the floating structure to reduce the load on the pipeline, ensuring that the thermal expansion and deformation of the pipeline is not constrained by the floating structure.

[0004] The following problems exist in the installation and welding of process pipelines in the prior art: (1) The fixed brackets in the prior art rarely perform pre-tightening and installation welding on the pipelines during installation. Generally, a temporary bracket is used first, and then replaced with a formal bracket after the installation and welding are completed. The installation and welding process of the pipeline is complicated and the operation is cumbersome, and there are deficiencies in the pre-tightening and installation process; (2) In the prior art, after the pipeline is installed and welded, only elastic constraints are usually used on the welds, or even no constraints are applied. The pipelines are not constrained or the elastic constraints of the pipelines are insufficient. After a period of operation under high temperature difference or pressure, cracks are easily generated in the welds and the base material of the pipelines with high stress levels. The cracks will not only cause irreversible deformation of the unconstrained pipelines, but may even cause the process pipelines to crack and break, causing leakage of the process medium and resulting in serious consequences. Summary of the invention

[0005] The purpose of the present invention is to provide a pipeline installation device based on a natural gas power generation project to solve the technical problems in the related art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pipeline installation device based on a natural gas power generation project, comprising a fixing unit for being sleeved on a pipeline, the fixing unit being provided with: a supporting unit, the supporting unit being able to adaptively support the fixing unit and the pipeline in a telescopic manner; an adjusting unit, the number of the adjusting units being at least four groups, and the multiple groups of the adjusting units being evenly arranged along the circumference of the fixing unit, the adjusting unit being used to adjust the fixing position of the fixing unit; a restraining unit, which is symmetrically arranged on the outside of the fixing unit, the restraining unit being used to restrain the radial deformation of the pipeline during thermal expansion.

[0007] As mentioned above, the fixing unit includes a first end and a second end, and the first end and the second end are connected via the adjusting unit.

[0008] As mentioned above, the regulating units have at least two groups symmetrically arranged for pre-tightening the pipeline.

[0009] As mentioned above, the first end portion includes a first half ring and a second half ring, and the first half ring is hinged to one end of the second half ring; the second end portion includes a third half ring and a fourth half ring, and the third half ring is also hinged to one end of the fourth half ring; the other ends of the first half ring and the third half ring are both rotatably provided with threaded sleeves, a locking bolt is provided in the middle of the threaded sleeve by threaded cooperation, and a buffer sleeve is provided on the outer side of the locking bolt.

[0010] As mentioned above, the support unit includes a support plate, and a support plate is installed in the middle of the outer end of the first half ring and the third half ring respectively. Two support rods are arranged side by side in a sliding manner in each support plate, and a support spring is arranged between the support rod and the support plate. A support disk is arranged at the end of the support rod away from the support plate.

[0011] As mentioned above, the adjustment unit includes an adjustment rod, at least two adjustment rods are arranged in parallel on the outer side of the first end through a ball joint, two adjustment plates are sleeved on the outer side of the middle sleeve of each adjustment rod, an adjustment screw is arranged at the edge of the adjustment plate, and a sliding block is arranged at the end of the adjustment screw by a threaded connection, and the sliding block is slidably arranged in the adjustment rod.

[0012] As mentioned above, at least two of the adjusting rods are symmetrically arranged and provided with threads on the outer sides thereof, which are used for pre-tightening adjustment before pipeline welding. The adjusting rods are provided with adjusting nuts in a threaded manner.

[0013] As mentioned above, at least two of the adjusting rods are symmetrically arranged, and a pressing plate is slidably arranged in the middle of the adjusting rod.

[0014] As mentioned above, the constraint unit includes a constraint plate, which is rotatably installed on the outside of the fixed unit, and one end of the constraint plate close to each other is hinged with an arc plate, and two return springs are arranged in parallel on the side of the arc plate close to the constraint plate, and a deformation block is arranged on the end of the constraint plate away from the arc plate.

[0015] As mentioned above, the deformation block is a metal block with a large thermal expansion coefficient, a deformation ring is arranged outside the deformation block, and the thermal expansion coefficient of the deformation block is greater than the thermal expansion coefficient of the arc plate.

[0016] In the above technical scheme, the beneficial effects of the present invention are: (1) the device is fixed to the end of the to-be-welded pipe with different radial diameters by a fixing unit, and the pipe is pre-tightened and aligned by at least two groups of symmetrically arranged adjustment units provided in the device before welding, which facilitates installation while ensuring installation accuracy. After the pipe welding is completed, the device is not removed, which facilitates the device to support and constrain the installed pipe. The pre-tightening installation and support and fixing integrated structure avoids the cumbersome process of pipe installation and improves installation efficiency; (2) at least two groups of symmetrically arranged adjustment units are fixed on the fixing unit to constrain the axial elongation and axial rotation of the pipe after thermal expansion, and at the same time, the radial deformation of the pipe after thermal expansion is constrained by the constraint unit provided in the device, so as to avoid irreversible deformation or even cracking and disconnection of the unconstrained thermal expansion pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a structural schematic diagram of the working state of the present invention;

[0019] Figure 2 A top view of the working state of the present invention;

[0020] Figure 3 It is a front view of the working state of the present invention;

[0021] Figure 4 For the present invention Figure 2 AA section view;

[0022] Figure 5 For the present invention Figure 2 BB section view;

[0023] Figure 6 It is a schematic diagram of a partial three-dimensional structure between the second half ring, the locking bolt and the buffer sleeve of the present invention;

[0024] Figure 7 It is a partial cross-sectional view between the adjustment unit and the fourth half ring of the present invention;

[0025] Figure 8 It is a partial cross-sectional view of the adjusting rod, the pressing plate, the arc plate and the step plate of the present invention.

[0026] Description of reference numerals:

[0027] 1. Fixing unit; 2. Supporting unit; 3. Adjusting unit; 4. Constraining unit; 5. Clamping unit; 11. First end; 12. Second end; 111. First half ring; 112. Second half ring; 121. Third half ring; 122. Fourth half ring; 13. Threaded sleeve; 14. Locking bolt; 15. Buffer sleeve; 21. Support plate; 22. Telescopic support rod; 23. Support spring; 24. Support plate; 31. Adjusting rod; 32. Adjusting plate; 33. Adjusting screw; 34. Sliding block; 35. Adjusting nut; 36. Pressing plate; 311. First trapezoidal protrusion; 312. Second trapezoidal protrusion; 360. Step plate; 41. Constraining plate; 42. Arc plate; 43. Return spring; 44. Deformation block; 51. Wedge block; 52. Clamping block; 53. Clamping spring. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] like Figure 1-8 As shown, an embodiment of the present invention provides a pipeline installation device based on a natural gas power generation project, including a fixing unit 1 for being sleeved on a pipeline, and the fixing unit 1 is provided with: a supporting unit 2, and the supporting unit 2 can adaptively support the fixing unit 1 and the pipeline in a telescopic manner; an adjusting unit 3, and the number of the adjusting units 3 is at least four groups, and the multiple groups of the adjusting units 3 are evenly arranged along the circumference of the fixing unit 1, and the adjusting units 3 are used to adjust the fixed position of the fixing unit 1 on the pipeline; a constraint unit 4, which is symmetrically arranged on the outside of the fixing unit 1, and the constraint unit 4 is used to constrain the radial deformation of the pipeline, and the radial deformation may be caused by thermal expansion, thermal expansion and contraction, or internal pressure fluctuations.

[0030] Specifically, in the present embodiment, the pipeline is of large diameter, and the medium conveyed is of high pressure and / or high temperature, such as a pipeline with a radial diameter exceeding 500mm, a pressure of the conveyed medium greater than 0.5MPA or a temperature greater than 420°C. When the present embodiment is used, the installer first fixes the device to the end of the pipeline to be installed and welded through the fixing unit 1 to butt the two pipelines for welding. After the fixing unit 1 is locked and fixed to the end of the pipeline, the fixing unit 1 and the pipeline are adaptively supported through the active or passive expansion of the supporting unit 2 itself, and then the fixing unit 1 is connected through at least two groups of symmetrically arranged adjustment units 3 for pre-tightening installation, and the position of the fixing unit 1 is adjusted through the two groups of adjustment units 3 to facilitate pre-tightening of the butt joint of the two pipelines (that is, the two pipelines to be welded are pre-pulled and aligned to facilitate welding the ends of the two pipelines into a whole). After the pipelines are pre-tightened, the installer will The pipeline to be installed is installed and welded into a whole. After the pipeline is installed and welded, the installer aligns it for inspection. After the inspection is qualified, the installer uses at least two groups of symmetrically arranged adjustment units 3 for constraint to connect and fix it on the fixing unit 1. In this embodiment, the fixing unit 1 can lock and fix large-diameter pipelines of different diameters to avoid separation between the device and the pipeline. The support unit 2 can support and fix pipelines at different heights with its own telescopic adaptability. The adjustment unit 3 is convenient for pre-tightening and aligning the pipeline before installation and welding, which is convenient for installation and ensures installation accuracy. At the same time, the adjustment unit 3 is convenient for constraining the axial elongation and axial rotation of the pipeline after thermal expansion during use. The constraint unit 4 is convenient for constraining the radial deformation of the pipeline after thermal expansion, avoiding irreversible deformation or even cracking and disconnection of high-temperature pipelines that are not constrained by thermal expansion.

[0031] The embodiment of the present invention provides a pipeline installation device based on a natural gas power generation project, (1) the device is fixed to the end of a pipeline to be welded with different radial diameters by a fixing unit 1, and the pipeline is pre-tightened and aligned by two symmetrically arranged adjustment units 3 provided in the device before welding, so as to facilitate installation and ensure installation accuracy. After the pipeline welding is completed, the device is not removed, so as to facilitate the device to support and constrain the installed pipeline. The pre-tightening installation and support and fixing integrated structure avoids the cumbersome process of pipeline installation and improves installation efficiency; (2) at least two symmetrically arranged adjustment units 3 are fixed on the fixing unit 1 to constrain the axial elongation and axial rotation of the pipeline after thermal expansion, and at the same time, the radial deformation of the pipeline after thermal expansion is constrained by the constraint unit 4 provided in the device, so as to avoid irreversible deformation or even cracking and disconnection of the high-temperature pipeline due to unconstrained thermal expansion.

[0032] In another embodiment provided by the present invention, the fixing unit 1 includes a first end 11 and a second end 12, and the first end 11 and the second end 12 are both circular as a whole so as to be able to be sleeved onto the end of the pipe. The first end 11 and the second end 12 are connected via the adjusting unit 3. Specifically, the installer first fixes the first end 11 to the end of one pipe, and then fixes the second end 12 to the end of another pipe, and connects the first end 11 and the second end 12 into a whole through the adjusting unit 3, thereby pre-tightening and aligning the pipe before installation and welding, making it convenient for the installer to quickly install and weld the pipe and ensure installation accuracy. At the same time, the adjusting unit 3 connects the first end 11 and the second end 12 into a whole, making it convenient to constrain the axial elongation and axial rotation of the pipe after thermal expansion, thereby avoiding irreversible deformation or even cracking and disconnection of the high-temperature pipe due to unconstrained thermal expansion.

[0033] In another embodiment provided by the present invention, there are at least two groups of the adjustment units 3 and they are symmetrically arranged for pre-tightening installation of the pipeline. Specifically, the installer uses at least two groups of the symmetrically arranged adjustment units 3 to connect the first end 11 and the second end 12 into a whole, and uses the adjustment units 3 for pre-tightening to pull the first end 11 and the second end 12 closer to each other, so that the first end 11 and the second end 12 drive the ends of the pipeline fixed therein to approach each other, thereby facilitating rapid pre-tightening installation of the pipeline.

[0034] In another embodiment provided by the present invention, the first end portion 11 includes a first half ring 111 and a second half ring 112, and the first half ring 111 is hinged to one end of the second half ring 112; the second end portion 12 includes a third half ring 121 and a fourth half ring 122, and one end of the third half ring 121 is also hinged to the fourth half ring 122; the other ends of the first half ring 111 and the third half ring 121 are both rotatably provided with a threaded sleeve 13, and the threaded sleeve 13 is provided with a locking bolt 14 in a threaded matching manner, and the free ends of the second half ring 112 and the fourth half ring 122 are both provided with a clamping The middle part of the locking bolt 14 is slidably arranged in the card slot, and the outer side of the locking bolt 14 is sleeved with a buffer sleeve 15. Specifically, before installing the pipeline, the installer rotates the locking bolt 14 to make the locking bolt 14 move along the threaded sleeve 13, so that the locking bolt 14 releases the fixation of the first half ring 111 and the second half ring 112, the third half ring 121 and the fourth half ring 122, so that the installer can open the free ends of the first half ring 111 and the second half ring 112, the third half ring 121 and the fourth half ring 122, and the installer can respectively set the first half ring 111 and the third half ring 121 on the two welding holes to be installed. The end of the pipe is installed, and the second half ring 112 and the fourth half ring 122 are rotated and moved closer to the first half ring 111 and the third half ring 121, so that the first half ring 111 and the second half ring 112 are closed into a circular ring sleeve and arranged at one end of a pipe, and then the third half ring 121 and the fourth half ring 122 are also closed into a circular ring sleeve and arranged at one end of another pipe. Subsequently, the installer rotates the locking bolt 14 in the opposite direction, so that the locking bolt 14 moves along the threaded sleeve 13, so that the locking bolt 14 squeezes the buffer sleeve 15, so that the buffer sleeve 15 squeezes the free ends of the second half ring 112 and the fourth half ring 122, so that the second half ring 111 and the second half ring 112 are closed into a circular ring sleeve and arranged at one end of the pipe. The free end of the ring 112 is close to the free end of the first half ring 111, and the free end of the fourth half ring 122 is close to the free end of the third half ring 121, so that the first half ring 111 and the second half ring 112 are locked and fixed at one end of the pipe, and the third half ring 121 and the fourth half ring 122 are locked and fixed at one end of the other pipe, which facilitates the adjustment unit 3 to connect the first end 11 and the second end 12, so that the adjustment unit 3 adjusts the distance between the first end 11 and the second end 12, so that the adjustment unit 3 adjusts the distance between the two pipes through the first end 11 and the second end 12, which facilitates the installer to install and weld the two pipes.

[0035] Furthermore, the free ends of the second half ring 112 and the fourth half ring 122 are each provided with two blocks, the two blocks are arranged side by side on both sides of the slot, and the outer side of the buffer sleeve 15 is evenly provided with a plurality of cutting grooves. Specifically, when the first half ring 111 and the second half ring 112, the third half ring 121 and the fourth half ring 122 are closed into a circular ring and fixed at the end of the pipe, the middle part of the locking bolt 14 is inserted into the slot, and the buffer sleeve 15 is located between the two blocks, so that the blocks can limit the buffer sleeve 15 and avoid the buffer sleeve 15 and the second half ring 112 and the fourth half ring 122 from causing a collision. The first half ring 111 and the second half ring 112, the third half ring 121 and the fourth half ring 122 are formed to form a circular ring which can not be fixed on the end of the pipe. At the same time, the cutting grooves evenly arranged on the outside of the buffer sleeve 15 are convenient for the pipeline to be thermally expanded and deformed, resulting in an increase in the radial diameter. The cutting grooves abut against the edge of the block. The circular ring formed by the first half ring 111 and the second half ring 112, the third half ring 121 and the fourth half ring 122 maintains sufficient restraint on the pipe while preventing the buffer sleeve 15 from passively rotating to make the circular ring passively enlarge.

[0036] In another embodiment provided by the present invention, the support unit 2 includes a support plate 21, a support plate 21 is installed at the middle part of the outer end of each of the first half ring 111 and the third half ring 121, and two telescopic support rods 22 are arranged in parallel in a sliding manner in each of the support plates 21, a support spring 23 is arranged between the telescopic support rod 22 and the support plate 21, and a support disk 24 is arranged at one end of the telescopic support rod 22 away from the support plate 21. Specifically, when the fixing unit 1 is locked and fixed to the end of the pipeline, the telescopic support rod 22 is squeezed by the support spring 23, so that the support spring 23 adjusts the position height of the telescopic support rod 22 in the support plate 21, so that the telescopic support rod 22 adjusts the position of the support disk 24, so that the support disk 24 and the telescopic support rod 22 can support and fix pipelines with different height positions through the telescopic adaptability of the support spring 23, and the support strength of the support spring 23 on pipelines of different heights is different, so that the support disk 24 can increase its contact area with the ground, reduce the pressure and extend the service life of the device, and ensure that there is enough contact area between the support disk 24 and the ground to support and fix the pipeline.

[0037] In another embodiment provided by the present invention, the adjustment unit 3 includes an adjustment rod 31, at least two adjustment rods 31 are arranged in parallel on the outer side of the first end 11 through a ball joint, and two adjustment plates 32 are arranged in parallel along the axial direction in the middle of each adjustment rod 31, and a clamping column is arranged on the side where the two adjustment plates 32 are close to each other, and an adjustment screw 33 is arranged at the edge of the adjustment plate 32. The adjustment plate 32 is switched between the locking state and the free sliding state by rotating the adjustment screw 33, and the end of the adjustment screw 33 is provided with a sliding screw by a threaded connection. The sliding block 34 is slidably arranged on the adjusting rod 31. Further, the adjusting rod 31 is provided with a slide groove with a stepped cross section, and the sliding block 34 is slidably arranged in the slide groove. Specifically, after the installer fixes the first end 11 and the second end 12 to the ends of the pipe, the installer swings the free end (the end away from the ball joint) of the adjusting rod 31 located at the first end 11 to the second end 12, and the installer rotates the adjusting screw 33 so that the adjusting screw 33 moves along the sliding block 34 and releases the sliding block 34 and the adjusting rod 31. The fixing between them is convenient for the installer to slide and adjust the two adjustment plates 32 and the sliding block 34 provided thereon on the adjustment rod 31, so that the two adjustment plates 32 clamp the second end 12 therebetween, and the second end 12 is clamped by the clamping column provided on the side where the adjustment plates 32 are close to each other. At the same time, the installer rotates the adjustment screw 33 in the opposite direction to achieve locking, so as to avoid relative sliding between the adjustment plate 32 and the second end 12, so that the adjustment screw 33 moves along the sliding block 34 and locks the adjustment plate 32 and the sliding block 34 on the adjustment rod 31, and the adjustment plate 32 and the sliding block 34 are locked and fixed on the adjustment rod 31. At least two adjusting rods 31 are provided to connect the first end 11 and the second end 12, so that the adjusting rod 31 can pre-tighten and align the pipeline through the first end 11 and the second end 12, and it is convenient for the installer to install and weld the pipeline. After the pipeline welding is completed, the first end 11 and the second end 12 are further connected through other adjusting rods 31 and adjusting plates 32 arranged in parallel, so as to constrain the axial elongation and axial rotation of the pipeline after thermal expansion, and avoid irreversible deformation or even cracking and disconnection of the high-temperature pipeline due to unconstrained thermal expansion in the axial direction.

[0038] In another embodiment provided by the present invention, at least two of the adjusting rods 31 are symmetrically arranged about the central axis of the pipe and have threads on their outer sides, which are used for pre-tightening adjustment before pipe welding. The outer side of the adjusting rod 31 near the second end 12 is also provided with an adjusting nut 35 by threaded cooperation. Specifically, after the first end 11 and the second end 12 are connected by at least two symmetrically arranged adjusting rods 31 and having threads on their outer sides, the installer rotates the adjusting nut 35 to move the adjusting nut 35 along the adjusting rod 31, so that the adjusting rod 31 squeezes the adjusting plate 32, so that the adjusting plate 32 adjusts the distance between the pipe ends through the second end 12, which is convenient for the installer to install the welded pipe. At the same time, the cooperation between the adjusting nut 35 and the adjusting rod 31 reduces the sliding of the second end 12 along the adjusting rod 31, ensuring that the adjusting rod 31, the first end 11 and the second end 12 always constrain the axial elongation and axial rotation of the pipe after thermal expansion.

[0039] In another embodiment provided by the present invention, at least two of the multiple adjusting rods 31 are symmetrically arranged, and a clamping plate 36 is slidably provided in the middle of the adjusting rod 31, and the clamping plate 36 is an arc-shaped structure, and both ends of the arc-shaped structure of the clamping plate 36 are elastic. Specifically, after the pipeline welding is completed, the installation personnel adjust the position of the clamping plate 36 on the adjusting rod 31, and the clamping plate 36 is used to squeeze and tighten the radial deformation of the pipeline weld due to heat, thereby reducing the displacement of the pipeline weld due to thermal deformation, so that the clamping plate 36 constrains the radial deformation of the pipeline weld after thermal expansion, and the elasticity of the two ends of the arc-shaped structure of the clamping plate 36 enables the clamping plate 36 to adapt to pipelines of different diameters, ensuring that the clamping plate 36 is always tightly fitted to the outer surface of the pipeline weld, thereby avoiding irreversible deformation or even cracking and disconnection of the high-temperature pipeline due to unconstrained thermal expansion in the radial direction.

[0040] In another embodiment provided by the present invention, preferably, the adjusting rod 31 is provided with a slide groove with a T-shaped cross section, the slide groove is evenly provided with first trapezoidal protrusions 311, the sliding block 34 is a T-shaped slider, the sliding block 34 is provided with a second trapezoidal protrusion 311, the sliding block 34 is slidably set in the slide groove, and the thickness of the sliding block 34 is less than the height of the slide groove, that is, there is a gap between the sliding block 34 and the slide groove in a direction perpendicular to the length of the slide groove, and the thickness of the gap is greater than the total thickness of the first trapezoidal protrusion 311 and the second trapezoidal protrusion 311. Specifically, in the first working mode, the installer The adjusting screw 33 is rotated to move the sliding block 34 along the adjusting screw 33, so that the sliding block 34 moves radially inward along the adjusting rod 31 (that is, the sliding block 34 moves axially along the adjusting screw 33 toward the end away from the handle of the adjusting screw 33), so that the first trapezoidal protrusion 311 provided in the slide groove is separated from the second trapezoidal protrusion 311 provided on the sliding block 34 (that is, the bottom of the sliding block 34 is in contact with the bottom of the slide groove, and the gap between the top of the sliding block 34 and the top of the slide groove becomes larger, so that the first trapezoidal protrusion 311 is separated from the second trapezoidal protrusion 311), so that the adjusting screw 33 releases the sliding block 34 from the sliding groove. The locking and fixing of the adjustment plate 32 facilitates the installer to adjust the position of the sliding block 34 and the adjustment plate 32 on the adjustment rod 31; in the second action mode, after the position of the sliding block 34 and the adjustment plate 32 on the adjustment rod 31 is adjusted in the first working mode, the installer rotates the adjustment screw 33 in the opposite direction to move the sliding block 34 along the adjustment screw 33, so that the sliding block 34 moves radially outward along the adjustment rod 31 (that is, the sliding block 34 moves axially along the adjustment screw 33 toward the end close to the handle of the adjustment screw 33), so that the first trapezoidal protrusion 311 provided in the slide groove and the first trapezoidal protrusion 311 provided on the sliding block 34 The second trapezoidal protrusion 311 is engaged (that is, the top of the sliding block 34 is in contact with the top of the slide groove, and the gap between the bottom of the sliding block 34 and the bottom of the slide groove becomes larger, so that the first trapezoidal protrusion 311 is engaged with the second trapezoidal protrusion 311), so that the adjusting screw 33 locks the sliding block 34 and the adjusting plate 32 on the adjusting rod 31, avoiding the sliding between the sliding block 34, the adjusting plate 32 and the adjusting rod 31 due to the vibration caused by the fluid impact during transportation, and ensuring that the adjusting rod 31, the first end 11 and the second end 12 always maintain sufficient restraint force on the axial elongation and axial rotation of the pipeline after thermal expansion.

[0041] In another embodiment provided by the present invention, the constraint unit 4 includes a constraint plate 41, which is rotatably mounted on the outside of the fixed unit 1, and the ends of the two constraint plates 41 on the two pipes that are close to each other are each hinged with an arc plate 42, and the rotation center of the constraint plate 41 is set on the side close to the arc plate 42, and two return springs 43 are arranged in parallel on the side of the arc plate 42 close to the constraint plate 41, and the two ends of the return springs respectively abut the constraint plate 41 and the arc plate 42, and the constraint plate 41 is far from the arc plate 42. The end of the deformation block 44 is larger than the arc plate 42 and has a greater thermal expansion coefficient than the arc plate 42. Specifically, after the pipeline is installed and welded, during the process of transporting high-temperature media, the surface temperature of the pipeline increases with the temperature of the medium. When the surface temperature of the pipeline increases, due to There is a phenomenon of heat conduction between the contacting metals, so that the pipe with increased surface temperature drives the temperature of the deformation block 44 to increase. After the temperature of the deformation block 44 increases, the volume of the deformation block 44 increases due to the thermal expansion of the metal, so that the deformation block 44 with increased volume drives the constraint plate 41 to rotate, and then the constraint plate 41 drives the arc plate 42 to fit tightly to the surface of the pipe weld, so that the arc plate 42 squeezes the surface of the pipe weld, so that the arc plate 42 constrains the radial deformation of the pipe after thermal expansion, avoiding the high-temperature pipe with unconstrained thermal expansion from irreversible deformation or even cracking and breaking in the radial direction, and the two reset springs 43 arranged in parallel on the arc plate 42 facilitate the arc plate 42 and the constraint plate 41 to maintain a relatively vertical shape, ensuring that the arc plate 42 is always conveniently and quickly fitted to the pipe weld surface.

[0042] In another embodiment provided by the present invention, the deformation block 44 is a metal block whose thermal expansion coefficient is greater than that of the arc plate 42, a deformation ring is provided on the outer side of the deformation block 44, and the thermal expansion coefficient of the deformation block 44 is greater than that of the arc plate 42. Specifically, the thermal expansion coefficient of the deformation block 44 is greater than that of the arc plate 42, so that the volume of the deformation block 44 increased by deformation after heating is greater than the volume of the arc plate 42 increased by deformation after heating, and the deformation ring provided on the outer side of the deformation block 44 facilitates the deformation of the deformation block 44 to ensure that its volume is fully increased, and ensures that the deformation block 44 drives the constraint plate 41 to rotate and then squeezes the arc plate 42, so that the arc plate 42 squeezes the weld of the pipeline, so that the deformation block 44, the constraint plate 41 and the arc plate 42 passively restrain the radial deformation of the pipeline weld, avoid the high-temperature pipeline with unconstrained thermal expansion from irreversible deformation or even cracking and disconnection in the radial direction, and thus avoid leakage of the conveying medium.

[0043] In another embodiment provided by the present invention, preferably, both ends of the arc structure of the clamping plate 36 are further provided with step plates 360 formed with the ends of the arc structure. Specifically, after the pipeline is welded, the radial deformation caused by thermal expansion at the pipeline weld is constrained by the arc plate 42, and the two ends of the arc plate 42 are squeezed and constrained by the step plates 360 provided at both ends of the arc structure of the clamping plate 36 to prevent the arc plate 42 from shaking. At the same time, the arc plate 42 is pressed against the step plate 360, so that the arc plate 42 presses and constrains the clamping plate 36 to prevent the clamping plate 36 from sliding axially along the adjusting rod 31, so that the arc plate 42 and the clamping plate 36 constrain each other and constrain the radial deformation caused by thermal expansion at the pipeline weld, so as to prevent the high-temperature pipeline with unconstrained thermal expansion from undergoing irreversible deformation in the radial direction or even cracking and breaking.

[0044] In another embodiment provided by the present invention, it is preferred that a clamping unit 5 is further included, wherein the clamping unit 5 includes a wedge block 51, wherein the wedge block 51 is arranged on a side of the constraint plate 41 close to the deformation block 44, and a latching tooth is arranged on the inclined surface of the wedge block 51, and a clamping block 52 is slidably arranged in the middle of the wedge block 51, wherein the clamping block 52 is wedge-matched with the inclined surface, and latching teeth are also arranged on the side surfaces of the clamping block 52 and the wedge block 51 that are wedge-matched, and the clamping block 52 is connected to the first end portion 11 via a clamping spring 53. Specifically, during the process of the deformation plate driving the constraint plate 41 to rotate, the wedge block 51 rotates synchronously with the constraint plate 41, and the wedge block 51 rotates with the constraint plate 41 When the wedge block 51 and the clamping block 52 are in the same position, a gap is generated between the wedge block 51 and the clamping block 52. At this time, the clamping spring 53 drives the clamping block 52 to slide toward the first end portion 11, so that the clamping block 52 fills the gap between the wedge block 51 and the clamping block 52 and fits tightly. At the same time, the clamping teeth between the wedge block 51 and the clamping block 52 prevent the two from sliding, ensuring that the wedge block 51 and the clamping block 52 always support and limit the end of the constraint plate 41 close to the deformation block 44, so that the constraint plate 41 drives the arc plate 42 to always squeeze the pipeline weld, so that the arc plate 42 fully constrains the radial deformation of the pipeline weld, avoiding the high-temperature pipeline that is thermally expanded from being irreversibly deformed in the radial direction or even cracking or breaking.

[0045] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A pipeline installation device based on a natural gas power generation project, comprising a fixing unit for sleeved onto a pipeline, characterized in that: The fixing unit is provided with: A support unit, wherein the support unit is capable of adaptably supporting the fixing unit and the pipeline in a telescopic manner; An adjusting unit, wherein the number of the adjusting units is at least four groups, and the multiple groups of the adjusting units are evenly arranged along the circumference of the fixing unit, and the adjusting units are used to adjust the fixing position of the fixing unit; The constraint unit is symmetrically arranged outside the fixing unit, and is used to constrain the radial deformation of the pipeline.

2. A pipeline installation device based on a natural gas power generation project according to claim 1, characterized in that: The fixing unit includes a first end and a second end, and the first end is connected to the second end through the adjusting unit.

3. A pipeline installation device based on a natural gas power generation project according to claim 1, characterized in that: The regulating units have at least two groups arranged symmetrically for pre-tightening the pipeline.

4. A pipeline installation device based on a natural gas power generation project according to claim 2, characterized in that: The first end portion comprises a first half ring and a second half ring, wherein the first half ring is hinged to one end of the second half ring; The second end portion includes a third half ring and a fourth half ring, and one end of the third half ring is also hinged to the fourth half ring; The other ends of the first half ring and the third half ring are both rotatably provided with threaded sleeves, a locking bolt is provided in the middle of the threaded sleeve by threaded matching, and a buffer sleeve is provided on the outer side of the locking bolt.

5. A pipeline installation device based on a natural gas power generation project according to claim 4, characterized in that: The support unit includes a support plate, and a support plate is installed at the middle of the outer end of the first half ring and the third half ring respectively. Two support rods are arranged side by side in a sliding manner in each support plate, a support spring is arranged between the support rod and the support plate, and a support disk is arranged at one end of the support rod away from the support plate.

6. A pipeline installation device based on a natural gas power generation project according to claim 4, characterized in that: The adjustment unit includes an adjustment rod, at least two adjustment rods are arranged in parallel on the outer side of the first end through a ball joint, two adjustment plates are sleeved on the outer side of the middle sleeve of each adjustment rod, an adjustment screw is arranged at the edge of the adjustment plate, and a sliding block is arranged at the end of the adjustment screw by a threaded connection, and the sliding block is slidably arranged in the adjustment rod.

7. A pipeline installation device based on a natural gas power generation project according to claim 6, characterized in that: At least two of the adjusting rods are symmetrically arranged and provided with threads on the outer sides thereof, which are used for pre-tightening adjustment before pipeline welding. The adjusting rods are provided with adjusting nuts in a threaded manner.

8. A pipeline installation device based on a natural gas power generation project according to claim 6, characterized in that: At least two of the adjusting rods are symmetrically arranged, and a pressing plate is slidably arranged in the middle of the adjusting rod.

9. A pipeline installation device based on a natural gas power generation project according to claim 1, characterized in that: The constraint unit includes a constraint plate, which is rotatably mounted on the outside of the fixed unit. An arc plate is hinged at one end of the constraint plate that is close to each other. Two return springs are arranged in parallel on one side of the arc plate close to the constraint plate. A deformation block is arranged at one end of the constraint plate that is away from the arc plate.

10. A pipeline installation device based on a natural gas power generation project according to claim 9, characterized in that: The deformation block is a metal block, a deformation ring is arranged on the outer side of the deformation block, and the thermal expansion coefficient of the deformation block is greater than the thermal expansion coefficient of the arc plate.

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