An installation and positioning device for a water distribution ring pipe of a pelton turbine set

Abstract

The application discloses a water distribution ring pipe mounting and positioning device for an impulse water turbine unit, relates to the field of impulse water turbine unit installation, and aims to solve the problem that the water distribution ring pipe cannot be monitored in real time during the welding installation process, error accumulation risk exists after multi-section welding, and the pipe sections are difficult to butt joint, comprising a base, a calibration platform is connected to the base through a spherical hinge, a laser range finder is fixedly connected to the calibration platform, an adjusting support rod is arranged outside the laser range finder, a pipe fixing clamp is arranged on the adjusting support rod, an adjusting frame is arranged between the adjusting support rod and the calibration platform, a calibration block is rotatably connected to the lower end of the adjusting support rod, a traction rope is fixedly connected to the bottom of the calibration block, a lead weight counterweight is fixedly connected to the lower end of the traction rope, a laser emitter is rotatably connected to the side of the calibration block, and a detection rod is arranged on the calibration platform, and the device has the advantages that real-time deformation monitoring during the welding process is realized, multi-dimensional synchronous adjusting support pipe flange concentricity is realized, and the stability of the measurement reference is improved.

Description

Technical Field

[0001] This invention relates to the field of impulse turbine installation technology, and in particular to an installation and positioning device for the water distribution ring pipe of an impulse turbine. Background Technology

[0002] As the core power equipment of high-head hydropower stations, the installation accuracy of the water distribution ring system of impulse turbine units directly affects the unit's operating efficiency. Traditional installation processes suffer from three major technical bottlenecks: First, intermittent measurements using optical instruments such as total stations cannot achieve real-time deformation monitoring during welding, leading to uncontrollable cumulative errors. Second, the lack of multi-dimensional synchronous adjustment mechanisms during pipe section connection necessitates repeated disassembly and reassembly for concentricity adjustment of branch flanges, resulting in time-consuming and labor-intensive processes. Third, existing fixing devices struggle to simultaneously address radial positioning and axial calibration, especially during the installation of large-diameter pipes, where conventional plumb line methods are severely affected by ambient airflow, easily leading to inaccurate measurement benchmarks. More significantly, the spatial orientation deviation of branch flanges caused by welding thermal deformation is unpredictable. Traditional static measurement methods struggle to capture millimeter-level positional changes in a timely manner, often only discovering deviations after multiple welds have been completed. Correction at this point requires damaging already welded areas, impacting construction progress and potentially compromising the structural integrity of the pipe. Furthermore, existing technologies lack integrated measurement and adjustment devices, requiring different tools to complete each process separately, which increases operational complexity and makes it difficult to ensure the uniformity of measurement standards across all stages.

[0003] To address the aforementioned issues, existing technologies urgently need improvement. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, this invention provides an installation and positioning device for the water distribution ring pipe of an impulse turbine unit. This design effectively solves the problem that the deformation of components cannot be monitored in real time during the welding and installation of the water distribution ring pipe, and that there is a risk of error accumulation after welding multiple sections, which leads to difficulties in connecting the closed pipe sections.

[0005] To achieve the above objectives, the present invention provides the following technical solution: The present invention includes a base, on which a calibration platform is ball-jointed. Multiple laser rangefinders, evenly distributed at angles, are fixedly connected to the calibration platform. An adjusting support rod is provided on the outer side of each laser rangefinder, and a pipe fixing clamp is provided on the adjusting support rod. An adjusting frame is provided between the adjusting support rod and the calibration platform. A calibration block is rotatably connected to the lower end of the adjusting support rod. A traction rope is fixedly connected to the bottom of the calibration block, and a weight block is fixedly connected to the lower end of the traction rope. A laser emitter is rotatably connected to the side of the calibration block. Multiple detection rods that cooperate with the laser emitter are provided on the calibration platform, and the distance between the multiple detection rods and the center of the calibration platform is the same.

[0006] The adjusting support rod includes a first support rod and a second support rod, which are slidably connected. The pipe fixing clamp is located at the upper end of the first support rod. The first support rod is provided with a length marking line, and the zero mark of the length marking line is located at the intersection of the pipe fixing clamp and the first support rod. The calibration block is rotatably connected to the lower end of the second support rod. The calibration block has a semi-cylindrical structure and angle marking lines are provided on the calibration block. The zero mark of the angle marking lines is parallel to the axis of the second support rod.

[0007] Preferably, the calibration platform includes a base plate, a sleeve fixedly connected to the base plate, a first screw threadedly connected to the sleeve, a pad fixedly connected to the bottom of the first screw, the pad being located below the base plate, a column fixedly connected to the base plate, a top plate fixedly connected to the column, a calibration column fixedly connected to the top plate, and a laser rangefinder fixedly connected to the top plate.

[0008] Preferably, the adjusting frame includes a first connecting rod, one end of which is hinged to an integrated adjusting block, which is sleeved with a column, and the other end of the first connecting rod is fixedly connected to an adjusting support rod by a fixing bolt. A sleeve is rotatably connected to the middle of the first connecting rod, and a second connecting rod is hinged to the sleeve. The other end of the second connecting rod is hinged to the top plate.

[0009] Preferably, the integrated adjusting block is provided with a through hole for the column to slide, and the integrated adjusting block is provided with fixing nuts on both the upper and lower sides, and the fixing nuts are threadedly connected to the column.

[0010] Preferably, the first connecting rod includes a third support rod and a fourth support rod. The outer ends of the third support rod and the fourth support rod are connected to hinge blocks. The inner ends of the third support rod and the fourth support rod are provided with threaded grooves. An adjusting sleeve is threadedly connected to the two threaded grooves. Limit nuts are threadedly connected to the third support rod and the fourth support rod. The structure of the second connecting rod is the same as that of the first connecting rod.

[0011] Preferably, the pipe fixing clamp includes a first clamping block, which is fixedly connected to an adjusting support rod. A second clamping block is slidably connected to the side of the first clamping block. Both the first and second clamping blocks have arc-shaped grooves on their inner sides. A second screw is threadedly connected to the second clamping block, and the second screw is rotatably connected to the first clamping block.

[0012] Preferably, the base plate is provided with a sliding groove, and a slider is slidably connected in the sliding groove. The slider is fixedly connected to the probe rod. The side of the base plate is provided with a guide hole for the probe rod to pass through. Multiple sliders are linked together through a synchronization component.

[0013] Preferably, the synchronization component includes an adjustment plate, which is rotatably connected to the base plate. The adjustment plate has an eccentric adjustment groove, and a connecting pin is slidably connected in the adjustment groove. The connecting pin is rotatably connected to the slider.

[0014] Preferably, the bottom of the calibration block is provided with a cylindrical hole, the central axis of the cylindrical hole is collinear with the central axis of the adjusting support rod, and the traction rope is fixedly connected in the cylindrical hole.

[0015] Preferably, a magnetic block is provided inside the cylindrical hole, and the lead weight is made of magnetic material.

[0016] The outstanding advantages of this invention compared to existing technologies are: The application provides an installation and positioning device for the water distribution ring pipe of an impulse turbine unit, along with its calibration platform, adjusting frame, pipe fixing clamp, and synchronization components. The device achieves real-time three-dimensional spatial monitoring through a ball joint calibration platform in conjunction with a multi-angle laser rangefinder. It utilizes an adjusting support rod with marking lines and a magnetic plumb bob to construct a precise measurement benchmark. Combined with a synchronization adjustment mechanism, it enables rapid calibration of the concentricity of multiple branch pipe flanges. This device has the advantages of eliminating welding thermal deformation errors and improving installation accuracy. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the forward structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the column connection structure of the present invention.

[0020] Figure 4 This is a schematic diagram of the adjusting support rod structure of the present invention.

[0021] Figure 5 This is a schematic diagram of the front cross-sectional structure of the first and second connecting rods of the present invention.

[0022] Figure 6 This is a schematic diagram of the pipe fixing clamp structure of the present invention.

[0023] Figure 7 This is a schematic diagram of the calibration block structure of the present invention.

[0024] Figure 8 This is a schematic diagram of the calibration platform structure of the present invention.

[0025] Figure 9 This is a schematic diagram of the probe rod connection structure of the present invention.

[0026] Figure 10 This is a schematic diagram of the bottom structure of the calibration block of the present invention.

[0027] Labels in the diagram: 1. Base; 2. Calibration platform; 201. Base plate; 202. Sleeve; 203. First screw; 204. Pad; 205. Column; 206. Top plate; 3. Laser rangefinder; 4. Adjusting support rod; 401. First support rod; 402. Second support rod; 403. Length marking line; 5. Pipe fixing clamp; 501. First clamping block; 502. Second clamping block; 503. Groove; 504. Second screw; 6. Adjusting frame; 601. First connecting rod; 6011. Third support rod; 60 12. Fourth support rod; 6013. Hinge block; 6014. Threaded groove; 6015. Adjusting sleeve; 6016. Limit nut; 602. Integrated adjusting block; 603. Fixing bolt; 604. Fixing nut; 605. Sleeve; 606. Second connecting rod; 7. Calibration block; 8. Traction rope; 9. Plumb bob counterweight; 10. Laser emitter; 11. Detector rod; 12. Angle marking line; 13. Slide groove; 14. Slider; 15. Adjusting disc; 16. Adjusting groove; 17. Connecting pin; 18. Cylindrical hole. Detailed Implementation

[0028] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] In existing technologies, the installation and positioning of the distribution ring pipe of an impulse turbine unit relies on intermittent static measurements using optical instruments such as total stations, making it impossible to monitor component deformation in real time during welding. Traditional methods require repeated adjustments to the welding process, which carries the risk of error accumulation and leads to difficulties in connecting the closure sections. For example, when welding thick-walled pipe sections, flange misalignment caused by thermal stress can only be detected during post-weld inspection, and the correction process requires destroying the already formed weld.

[0030] To address the aforementioned problems, the inventors discovered that coordinated control of dynamic monitoring and mechanical positioning is the key to breakthrough. By analyzing the welding deformation patterns, they found a correlation between the three-dimensional offset of the branch flange and its spatial attitude change under gravity. Based on this, they proposed combining laser positioning with a gravity plumb line to construct a spatial reference network and designed a mechanical support system that can be adjusted synchronously with the welding process, forming a closed-loop feedback mechanism.

[0031] Please see the appendix Figure 1-10 This embodiment describes an installation and positioning device for the water distribution ring pipe of an impulse turbine unit: the device includes a base 1, a ball-jointed calibration platform 2 on the base 1, multiple laser rangefinders 3 evenly distributed on the calibration platform 2, an adjusting support rod 4 with a pipe fixing clamp 5 on the outside of the laser rangefinders 3, an adjusting frame 6 between the adjusting support rod 4 and the platform, a semi-cylindrical calibration block 7 rotatably connected to the lower end of the adjusting support rod 4, a traction rope 8 and a lead weight 9 connected to the bottom of the calibration block 7, a laser emitter 10 on the side of the calibration block 7, and multiple equidistant detection rods 11 that cooperate with the laser emitter 10 on the calibration platform 2.

[0032] The calibration platform 2 refers to the planar structure that supports the measurement reference. Specifically, it can be implemented using a base plate 201 with a sleeve 202 and a screw adjustment mechanism. Rotating the first screw 203 changes the platform's horizontal tilt angle, establishing a precise reference plane for subsequent measurements. The laser rangefinder 3 is an optical device used for spatial distance measurement. Specifically, it can be a phase-type laser sensor, evenly arranged in a ring array around the circumference of the calibration platform 2, used for real-time monitoring of the radial displacement of each branch flange. The adjusting support rod 4 is a telescopic support component, specifically a nested double-rod structure. The first support rod 401 has a length marking line 403 for intuitive reading of the clamping height, and the second support rod 402 achieves fine-tuning of the angle by rotating and connecting to the calibration block 7, forming a three-dimensional spatial positioning capability. The calibration block 7 refers to the gravity reference device, which can be a semi-cylindrical structure. The bottom cylindrical hole 18 has a built-in magnetic block to attract the lead weight 9. A vertical reference is established by the traction rope 8 and the vertical line. The side laser emitter 10 and the detection rod 11 work together to detect the horizontal deflection angle of the branch flange. The tangent emitted by the laser emitter 10 is used as the reference line so that the spray point of each branch pipe is on the same external tangent circle after installation.

[0033] Specifically, the base 1 allows the calibration platform 2 to be adjusted in multiple directions via a ball joint structure, and the laser rangefinder 3 array collects the radial position data of each branch flange in real time. The adjusting support rod 4 achieves height adjustment through a sliding connection, and after the pipe fixing clamp 5 clamps the pipe section, the length marking line 403 can visually display the installation height deviation. The calibration block 7 remains vertical under the action of gravity, and its laser emitter 10 projects a beam of light onto the detection rod 11. When the branch pipe deviates at an angle, the change in the landing point of the beam on the detection rod 11 triggers an early warning. The adjusting frame 6 links multiple support rods through a linkage mechanism, and can synchronously adjust the spatial attitude of each branch pipe during the welding process, forming a dynamic closed-loop control.

[0034] Through the above structure, real-time monitoring and dynamic adjustment of the spatial position of the branch flange during the welding process of the water distribution ring pipe are realized, effectively suppressing the accumulation of errors caused by thermal deformation. The synergistic effect of the calibration platform 2 and the adjusting support rod 4 enables the installation errors of each pipe section to be corrected in the early stage of welding. The closed-loop feedback mechanism formed by the array of detection rods 11 reduces the frequency of manual intervention and improves installation accuracy and construction efficiency.

[0035] The calibration platform 2 further includes a base plate 201, a sleeve 202 fixedly connected to the base plate 201, a first screw 203 internally threaded to the sleeve, a pad 204 fixedly connected to the bottom of the first screw 203, the pad 204 being located below the base plate 201, a column 205 fixedly connected to the base plate 201, a top plate 206 fixedly connected to the column 205, a calibration column fixedly connected to the top plate 206, and a laser rangefinder 3 fixedly connected to the top plate 206.

[0036] The sleeve 202 is a cylindrical structure with internal threads, specifically a steel sleeve 202 welded and fixed to the base plate 201, used to accommodate the first screw 203 and achieve threaded engagement. The first screw 203 is a rod-shaped component with external threads, specifically made of stainless steel, which adjusts the height of the base plate 201 by rotating to achieve relative displacement between the sleeve 202 and the screw. The pad 204 is a support block connected to the bottom of the first screw 203, specifically made of rubber or polyurethane, used to increase the contact area and distribute pressure. The column 205 is a support structure vertically fixed to the base plate 201, specifically made of I-beams or square tubing, used to support the weight of the top plate 206 and the calibration column. The top plate 206 is a plate-shaped structure horizontally fixed to the top of the column 205, specifically made of steel plate cut into shape, used to install the calibration column and the laser rangefinder 3. The calibration column refers to the positioning reference structure fixed on the top plate 206. Specifically, it can be a cylindrical stainless steel part, whose axis is parallel to the optical path of the laser rangefinder 3 to ensure the uniformity of the measurement reference.

[0037] Specifically, the base plate 201 is height-adjustable via a threaded connection between the sleeve 202 and the first screw 203. When the first screw 203 is rotated, the relative displacement between the sleeve 202 and the screw causes the base plate 201 to move vertically, and the pad 204 rises and falls synchronously with the screw and contacts the ground. The column 205 is welded to the upper surface of the base plate 201, and the top plate 206 is fixed to the top of the column 205 by bolts or welding. The calibration column is installed in a preset hole in the top plate 206 by threads or plug-in connection. The laser rangefinder 3 is fixed to the edge of the top plate 206 by bolts, and its emission direction forms a fixed angle with the axis of the calibration column. During installation, the levelness of the base plate 201 is adjusted by rotating the first screw 203. The pad 204 deforms under pressure to compensate for uneven ground. The column 205 and the top plate 206 form a rigid support frame, and the calibration column serves as a reference point to ensure the spatial coordinate accuracy of the laser rangefinder 3.

[0038] This solution utilizes the threaded engagement of sleeve 202 and screw to precisely adjust the height of base plate 201, achieving millimeter-level accuracy. The elastic material of pad 204 absorbs localized stress, preventing platform tilting caused by hard contact. The combined structure of column 205 and top plate 206 ensures rigidity while reducing overall weight, facilitating on-site handling. The fixed connection between calibration column and laser rangefinder 3 eliminates manual alignment errors. This solves the installation benchmark deviation problem caused by uneven ground or welding deformation in traditional calibration platforms 2. The height adjustment function of base plate 201 quickly compensates for foundation construction errors, the combination of pad 204 and screw effectively distributes localized loads, the rigid connection between column 205 and top plate 206 maintains the stability of the measurement benchmark, and the preset position of calibration column ensures the spatial coordinate consistency of multiple laser rangefinders 3, thereby reducing the number of repeated adjustments during the installation of water distribution ring pipes.

[0039] The adjusting frame 6 includes a first connecting rod 601, one end of which is hinged to an integrated adjusting block 602, which is sleeved with the column 205. The other end of the first connecting rod 601 is fixedly connected to the adjusting support rod 4 by a fixing bolt 603. A sleeve 605 is rotatably connected to the middle of the first connecting rod 601, and a second connecting rod 606 is hinged to the sleeve 605. The other end of the second connecting rod 606 is hinged to the top plate 206.

[0040] The first connecting rod 601 refers to the rod-shaped structure connecting the integrated adjusting block 602 and the adjusting support rod 4. Specifically, it can be implemented using a metal rod with a hinged end, whose hinged design allows the adjusting support rod 4 to be adjusted in the horizontal plane. The integrated adjusting block 602 refers to a movable component sleeved on the column 205. Specifically, it can be implemented using a metal block with a through hole, which fits the column 205 with a clearance, allowing it to slide along the axis of the column 205 to achieve height adjustment. The second connecting rod 606 refers to the auxiliary support structure connecting the middle of the first connecting rod 601 to the top plate 206. Specifically, it can be implemented using a rod of the same material as the first connecting rod 601, forming a triangular stable structure through a central hinge to prevent the adjusting support rod 4 from shifting during adjustment.

[0041] Specifically, the first connecting rod 601 is hinged to both the integrated adjusting block 602 and the adjusting support rod 4. When the integrated adjusting block 602 slides along the column 205, it can drive the adjusting support rod 4 to rise and fall synchronously. The second connecting rod 606 forms a constraint on the first connecting rod 601 through the hinge point of the top plate 206. When the adjusting support rod 4 is subjected to external force, the second connecting rod 606 counteracts the offset tendency through the torque transmission at the hinge point. The fixing bolt 603 is used to lock the relative position of the adjusting support rod 4 and the first connecting rod 601, maintaining spatial stability after adjustment.

[0042] This solution combines a hinged connecting rod with a triangular support structure, enabling simultaneous adjustment of height and horizontal position in a single operation. The self-locking characteristic of the adjusted structure effectively resists displacement caused by welding deformation. It achieves precise multi-degree-of-freedom control of the adjusting support rod 4 during the installation of the water distribution ring pipe, replacing manual step-by-step adjustments with a mechanical linkage structure, thus reducing operational complexity. The triangular support structure maintains the spatial position of the branch pipe flange even under welding heat input conditions, avoiding the construction delays caused by repeated measurements and adjustments in traditional methods.

[0043] The integrated adjusting block 602 is provided with a through hole for the column 205 to slide. The integrated adjusting block 602 is provided with fixing nuts 604 on both the upper and lower sides, and the fixing nuts 604 are threadedly connected to the column 205.

[0044] The integrated adjusting block 602 is an intermediate component used to connect the adjusting frame 6 and the column 205. It can be implemented as a metal block with a through hole, where the inner wall of the through hole contacts the outer surface of the column 205 to form a sliding pair, allowing the integrated adjusting block 602 to move along the axis of the column 205. The fixing nut 604 is a fastener used to lock the position of the integrated adjusting block 602. It can be implemented as a ring-shaped metal part with internal threads. By tightening the fixing nut 604, it engages with the external threads of the column 205, thereby restricting the sliding freedom of the integrated adjusting block 602.

[0045] Specifically, during the installation of the water distribution ring pipe, the integrated adjusting block 602 slides along the column 205, which can drive the adjusting support rod 4 to adjust its height position synchronously. When it is necessary to fix the integrated adjusting block 602, the fixing nuts 604 on the upper and lower sides are tightened to generate friction and thread engagement force with the column 205, thereby forming a double locking mechanism. For example, the diameter of the through hole can be slightly larger than the outer diameter of the column 205 to retain adjustment margin, and the thread parameters of the fixing nut 604 must be completely matched with the external thread of the column 205 to ensure effective locking.

[0046] The first connecting rod 601 includes a third support rod 6011 and a fourth support rod 6012. The outer ends of the third support rod 6011 and the fourth support rod 6012 are connected to hinge blocks 6013. The inner ends of the third support rod 6011 and the fourth support rod 6012 are provided with threaded grooves 6014. An adjusting sleeve 6015 is threadedly connected to the two threaded grooves 6014. A limit nut 6016 is threadedly connected to the third support rod 6011 and the fourth support rod 6012. The structure of the second connecting rod 606 is the same as that of the first connecting rod 601.

[0047] The hinge block 6013 connecting the outer ends of the third support rod 6011 and the fourth support rod 6012 refers to the adjustable angle connection structure formed by the two support rods through the hinge block 6013. Specifically, it can be implemented using a metal block with a spherical hinge joint. The hinge block 6013 allows the support rods to change their relative angle under external force. The threaded groove 6014 refers to the groove structure located at the inner end of the support rod. Specifically, it can be implemented using a T-slot formed by milling. The adjusting sleeve 6015 refers to a sleeve structure with a threaded hole. Specifically, it can be implemented using a double-threaded sleeve. The adjusting sleeve 6015, through rotation, causes the third support rod 6011 and the fourth support rod 6012 to move axially along the threaded groove 6014. The limiting nut 6016 refers to a fastener with internal threads. Specifically, it can be implemented using a hexagonal nut. The limiting nut 6016, by tightening, abuts against the surface of the support rod to lock the position of the adjusting sleeve 6015.

[0048] Specifically, the third support rod 6011 and the fourth support rod 6012 form a movable connection structure through the hinge block 6013. When the adjusting sleeve 6015 rotates within the threaded groove 6014, the third support rod 6011 and the fourth support rod 6012 undergo axial extension and retraction. For example, rotating the adjusting sleeve 6015 clockwise causes the two support rods to retract towards the center, while rotating it counterclockwise causes them to extend outward. The limit nut 6016 is tightened after adjustment to prevent displacement of the support rods under vibration or external force. When the second connecting rod 606 adopts the same structure, multi-point linkage control of the calibration platform 2 can be achieved through synchronous adjustment.

[0049] This solution, through the cooperation of the bidirectional threaded adjusting sleeve 6015 and the limiting nut 6016, can achieve linear adjustment with millimeter-level precision without disassembling the components. At the same time, the hinge block 6013 structure allows the support rod to adaptively offset its angle in three-dimensional space, avoiding stress concentration caused by assembly errors.

[0050] The pipe fixing clamp 5 includes a first clamping block 501, which is fixedly connected to the adjusting support rod 4. A second clamping block 502 is slidably connected to the side of the first clamping block 501. Both the first clamping block 501 and the second clamping block 502 have arc-shaped grooves 503 on their inner sides. A second screw 504 is threadedly connected to the second clamping block 502, and the second screw 504 is rotatably connected to the first clamping block 501.

[0051] The first clamping block 501 refers to the fixed base 1 part rigidly connected to the adjusting support rod 4, which can be achieved by welding or bolting, and is used to provide basic support for clamping force. The second clamping block 502 refers to the movable clamping component that forms a sliding fit with the first clamping block 501, which can be achieved by a dovetail groove or guide rail structure, and the clamping distance can be changed by sliding displacement to adapt to different pipe diameters. The arc-shaped groove 503 refers to the curved surface structure set on the inner side of the first clamping block 501 and the second clamping block 502, which can be achieved by an arc-shaped contour matching the outer diameter of the pipe, and is used to increase the contact area and evenly distribute the clamping pressure. The second screw 504 refers to the threaded rod that passes through the second clamping block 502, which can be achieved by a two-way threaded rod and a handwheel structure, and the rotational motion is converted into linear displacement of the second clamping block 502 to adjust the clamping force.

[0052] Specifically, during the installation of the water distribution ring pipe, the pipe is placed within the arc-shaped groove 503 between the first clamping block 501 and the second clamping block 502. The operator rotates the second screw 504 to drive the second clamping block 502 to slide along the side of the first clamping block 501, causing the grooves 503 of the two clamping blocks to form a covering and clamping effect on the pipe. Because the arc surface of the groove 503 fits against the outer wall of the pipe, the clamping force is evenly transmitted through the curved surface contact, avoiding local stress concentration that could lead to pipe wall deformation. During the welding process, if a fine adjustment of the pipe position is required, the clamping can be temporarily loosened by rotating the second screw 504 in the opposite direction. After adjustment, it can be tightened again. The entire process does not require disassembling the clamps.

[0053] A sliding groove 13 is provided on the base plate 201, and a slider 14 is slidably connected in the sliding groove 13. The slider 14 is fixedly connected to the probe rod 11. A guide hole is provided on the side of the base plate 201 for the probe rod 11 to pass through. Multiple sliders 14 are linked together through a synchronization component.

[0054] The groove 13 refers to a straight groove 503 formed on the surface of the base plate 201, which can be implemented using a T-slot or dovetail groove structure, and is used to constrain the sliding trajectory of the slider 14. The slider 14 refers to a sliding component that matches the shape of the groove 13, which can be implemented using a metal block with balls or slide rails, and is used to drive the probe rod 11 to move along the groove 13. The guide hole refers to a through hole formed on the side of the base plate 201, which can be implemented using a circular or rectangular hole structure, and is used to limit the movement direction of the probe rod 11 and prevent deflection. The synchronization component refers to a transmission mechanism that connects multiple sliders 14, which can be implemented using a gear rack or linkage mechanism, and is used to ensure that multiple sliders 14 are displaced synchronously.

[0055] Specifically, the slide groove 13 extends radially along the base plate 201, and the slider 14 is embedded in the slide groove 13 and fixedly connected to the probe rod 11 by bolts. The probe rod 11 extends through the guide hole to the outside of the calibration platform 2, and a laser receiving element is installed at its end. When the synchronization component is driven, multiple sliders 14 slide synchronously along their respective slide grooves 13, causing the probe rod 11 to move radially under the constraint of the guide hole, so that all probe rods 11 maintain an equidistant relationship with the center of the calibration platform 2.

[0056] This application can quickly adjust the radial position of the probe rod 11 to ensure that multiple probe rods 11 are always equidistantly distributed around the calibration platform 2. During the installation of the water distribution ring pipe, the diameter of the outer tangent circle formed by the synchronous adjustment of the probe rod 11 is the same as the distance between the blade of the impact unit to be impacted and the axis. The probe rod 11 is used to display the position of the branch pipe to be impacted, ensuring the accuracy of the branch pipe installation.

[0057] The synchronization component includes an adjustment plate 15, which is rotatably connected to the base plate 201. The adjustment plate 15 is provided with an eccentric adjustment groove 16, and a connecting pin 17 is slidably connected in the adjustment groove 16. The connecting pin 17 is rotatably connected to the slider 14.

[0058] The adjusting disc 15 refers to a disc-shaped structure with an eccentric adjusting groove 16, which can be made of metal. Its rotation drives the connecting pin 17 to move along an eccentric trajectory, thereby causing multiple sliders 14 to move synchronously. The adjusting groove 16 refers to an arc-shaped groove 503 formed on the adjusting disc 15, which can be milled to form an eccentric structure. Precise control of the slider 14's stroke is achieved by changing the position of the connecting pin 17 within the groove. The connecting pin 17 is a cylindrical component hinged at both ends to the adjusting groove 16 and the slider 14 respectively. It can be a stainless steel pin with ball bearings to achieve low-friction sliding, converting the rotational motion of the adjusting disc 15 into the linear motion of the slider 14.

[0059] Specifically, when the adjusting disk 15 is rotated manually or by a drive mechanism, the connecting pin 17 generates radial displacement within the eccentric adjusting groove 16, thereby pushing the slider 14 to slide along the slide groove 13 of the base plate 201 through the hinge point. Since multiple sliders 14 are linked through the same adjusting disk 15, the radial positions of all probe rods 11 can be adjusted synchronously, ensuring that each probe rod 11 maintains an equal distance from the center of the calibration platform 2. For example, when the adjusting disk 15 rotates clockwise, the connecting pin 17 moves outward along the eccentric groove, causing the probe rods 11 to expand outward; when it rotates counterclockwise, the connecting pin 17 retracts inward, and the probe rods 11 synchronously converge towards the center.

[0060] The bottom of the calibration block 7 is provided with a cylindrical hole 18. The central axis of the cylindrical hole 18 is collinear with the central axis of the adjusting support rod 4, and the traction rope 8 is fixedly connected in the cylindrical hole 18.

[0061] The cylindrical hole 18 refers to a through hole located at the bottom of the calibration block 7, with its axis coinciding with the axis of the adjusting support rod 4. This hole can be machined to form a cylindrical cavity and is used to constrain the suspension position of the traction rope 8. The collinearity of the central axes means that the axis of the cylindrical hole 18 and the axis of the adjusting support rod 4 are on the same straight line in space. This can be achieved through coaxial positioning pins or a laser alignment device to ensure that the suspension direction of the traction rope 8 is consistent with the extension direction of the support rod.

[0062] Specifically, after machining a cylindrical hole 18 at the bottom of the calibration block 7, one end of the traction rope 8 is fixed inside the hole, and the other end is connected to the lead weight 9. Since the axis of the cylindrical hole 18 is collinear with the axis of the adjusting rod 4, when the lead weight hangs naturally under the weight of the calibration block 7, its suspension point coincides with the axis of the rod, thereby eliminating the horizontal component force caused by the offset of the suspension point. During the calibration process, when the adjusting rod 4 drives the calibration block 7 to rotate, the lead weight is always suspended vertically along the axis of the rod, avoiding calibration errors caused by the eccentricity of the suspension point.

[0063] In some specific embodiments, an annular groove 503 may be provided on the inner wall of the cylindrical hole 18, and the traction rope 8 may be fixed in the groove 503 by a knot or buckle; or a threaded connection may be used, in which a connector with external threads is installed at the end of the traction rope 8 and screwed into the threaded hole on the inner wall of the cylindrical hole 18 for fixation.

[0064] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for installing and positioning the water distribution ring pipe of an impulse turbine unit, characterized in that: The system includes a base (1), a calibration platform (2) is ball-jointed on the base (1), multiple laser rangefinders (3) are fixedly connected on the calibration platform (2) at equal angles, an adjustment rod (4) is provided on the outside of the laser rangefinder (3), a pipe fixing clamp (5) is provided on the adjustment rod (4), an adjustment frame (6) is provided between the adjustment rod (4) and the calibration platform, a calibration block (7) is rotatably connected to the lower end of the adjustment rod (4), a traction rope (8) is fixedly connected to the bottom of the calibration block (7), a weight block (9) is fixedly connected to the lower end of the traction rope (8), a laser emitter (10) is rotatably connected to the side of the calibration block (7), and multiple probe rods (11) that cooperate with the laser emitter (10) are provided on the calibration platform (2), and the distance between the multiple probe rods (11) and the center of the calibration platform (2) is the same; The adjusting support rod (4) includes a first support rod (401) and a second support rod (402). The first support rod (401) and the second support rod (402) are slidably connected. The pipe fixing clamp (5) is located at the upper end of the first support rod (401). The first support rod (401) is provided with a length marking line (403). The zero mark of the length marking line (403) is located at the intersection of the pipe fixing clamp (5) and the first support rod (401). The calibration block (7) is rotatably connected to the lower end of the second support rod (402). The calibration block (7) is a semi-cylindrical structure. An angle marking line (12) is provided on the calibration block (7). The zero mark of the angle marking line (12) is parallel to the axis of the second support rod (402).

2. The installation and positioning device for the water distribution ring pipe of an impulse turbine unit according to claim 1, characterized in that: The calibration platform (2) includes a base plate (201), a sleeve (202) is fixedly connected to the base plate (201), a first screw (203) is connected to the sleeve (202) by an internal thread, a pad (204) is fixedly connected to the bottom of the first screw (203), the pad (204) is located below the base plate (201), a column (205) is fixedly connected to the base plate (201), a top plate (206) is fixedly connected to the column (205), a calibration column is fixedly connected to the top plate (206), and a laser rangefinder (3) is fixedly connected to the top plate (206).

3. A water distribution ring pipe installation and positioning device for an impulse turbine unit according to claim 2, characterized in that: The adjustment frame (6) includes a first connecting rod (601), one end of which is hinged to an integrated adjustment block (602), which is sleeved with a column (205), and the other end of the first connecting rod (601) is fixedly connected to the adjustment support rod (4) by a fixing bolt (603). A sleeve (605) is rotatably connected to the middle of the first connecting rod (601), and a second connecting rod (606) is hinged to the sleeve (605). The other end of the second connecting rod (606) is hinged to the top plate (206).

4. A water distribution ring pipe installation and positioning device for an impulse turbine unit according to claim 3, characterized in that: The integrated adjustment block (602) is provided with a through hole for the column (205) to slide. The integrated adjustment block (602) is provided with fixing nuts (604) on both the upper and lower sides. The fixing nuts (604) are threadedly connected to the column (205).

5. A water distribution ring pipe installation and positioning device for an impulse turbine unit according to claim 3, characterized in that: The first link (601) includes a third support (6011) and a fourth support (6012). The outer ends of the third support (6011) and the fourth support (6012) are connected to hinge blocks (6013). The inner ends of the third support (6011) and the fourth support (6012) are provided with threaded grooves (6014). An adjusting sleeve (6015) is threadedly connected to the two threaded grooves (6014). A limit nut (6016) is threadedly connected to the third support (6011) and the fourth support (6012). The structure of the second link (606) is the same as that of the first link (601).

6. A water distribution ring pipe installation and positioning device for an impulse turbine unit according to claim 1, characterized in that: The pipe fixing clamp (5) includes a first clamping block (501), which is fixedly connected to the adjusting support rod (4). A second clamping block (502) is slidably connected to the side of the first clamping block (501). Both the first clamping block (501) and the second clamping block (502) have arc-shaped grooves (503) on their inner sides. A second screw (504) is threaded onto the second clamping block (502), and the second screw (504) is rotatably connected to the first clamping block (501).

7. A water distribution ring pipe installation and positioning device for an impulse turbine unit according to claim 2, characterized in that: The base plate (201) is provided with a sliding groove (13), and a slider (14) is slidably connected in the sliding groove (13). The slider (14) is fixedly connected to the probe rod (11). The side of the base plate (201) is provided with a guide hole for the probe rod (11) to pass through. Multiple sliders (14) are linked together through a synchronization component.

8. A water distribution ring pipe installation and positioning device for an impulse turbine unit according to claim 7, characterized in that: The synchronization component includes an adjustment plate (15), which is rotatably connected to the base plate (201). An eccentric adjustment groove (16) is provided on the adjustment plate (15), and a connecting pin (17) is slidably connected in the adjustment groove (16). The connecting pin (17) is rotatably connected to the slider (14).

9. A water distribution ring pipe installation and positioning device for an impulse turbine unit according to claim 1, characterized in that: The calibration block (7) has a cylindrical hole (18) at the bottom. The central axis of the cylindrical hole (18) is collinear with the central axis of the adjusting support rod (4). The traction rope (8) is fixedly connected inside the cylindrical hole (18).

10. A water distribution ring pipe installation and positioning device for an impulse turbine unit according to claim 9, characterized in that: A magnetic block is installed inside the cylindrical hole (18), and the lead weight (9) is made of magnetic material.

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