Water turbine generator set water distribution ring pipe installation measuring device and installation measuring method

Abstract

The application relates to a water turbine generator set water distribution ring pipe installation measuring device and an installation measuring method. The device comprises: a rotary measuring device, which is used for being installed to a central position of a water turbine generator set, and comprises a rotatable measuring arm and a range finder arranged at the tail end of the measuring arm; and a measuring surface conversion device, which is used for being installed to a flange surface of a water distribution ring pipe branch pipe, and comprises a measuring flange, which is used for being vertically opposite to the range finder, and is provided with a measuring line, which is used for cooperating with the range finder. Compared with a traditional manual measuring mode by means of a piano wire and a tape measure, the installation measuring device can automatically complete distance measurement, and has high measuring precision and measuring efficiency, so as to help guarantee the installation construction period and construction quality of the water turbine generator set and the water distribution ring pipe.

Description

Technical Field

[0001] This application relates to the technical field of hydro-generator unit installation and construction, and in particular to a measuring device and method for the installation of a hydro-generator unit's water distribution ring pipe. Background Technology

[0002] The distribution ring pipe is a core component of a bucket turbine generator set. As a key pressure-bearing component located between the inlet ball valve and the turbine runner, its main function is to uniformly and symmetrically introduce water into each nozzle, driving the runner to rotate stably. With continuous advancements in domestic technology, the size and weight of the distribution ring pipe are constantly increasing, as is the distance between the center of the bucket turbine generator set and the measuring surface of the distribution ring pipe. In existing technology, there is a 68.4° angle between the center of the distribution ring pipe and the flange face of the distribution ring pipe branch. The traditional measurement method uses the center of the distribution ring pipe as a reference, drawing multiple piano lines parallel to the flange faces of each distribution ring pipe branch, and then using a measuring tape to measure the straight-line distance from the flange face of the distribution ring pipe branch to the piano lines.

[0003] However, the manual measurement method using piano wire and measuring tape leads to increasingly larger measurement errors as the measurement distance increases, and the installation of the water turbine generator set is inefficient due to the arrangement of the piano wire and the use of the measuring tape, which greatly restricts the installation period of the water turbine generator set. Summary of the Invention

[0004] Therefore, it is necessary to provide a measurement device and method for the installation of the water distribution ring pipe of a hydro-generator unit, addressing the problems of large measurement errors and low measurement efficiency of traditional technologies, which affect the installation period and quality of the water distribution ring pipe of the hydro-generator unit.

[0005] A first aspect of this application provides a measuring device for the installation of a water distribution ring pipe in a hydro-generator set, comprising:

[0006] A rotating measuring device, the rotating measuring device being installed at the center position of a hydro-generator unit, and the rotating measuring device comprising a rotatable measuring arm and a distance measuring instrument disposed at the end of the measuring arm; and

[0007] A measuring face conversion device is provided, which is used to be installed at the flange face of the water distribution ring pipe branch pipe. The measuring face conversion device includes a measuring flange, which is perpendicular to the rangefinder. A measuring line is provided on the measuring flange, which is used to work in conjunction with the rangefinder.

[0008] This installation measurement device is used in applications requiring accuracy testing of the water distribution ring pipe installation of hydro-generator units. The water distribution ring pipe has multiple branch pipes arranged at intervals along the circumference. In use, the rotating measuring device is installed at the center of the hydro-generator unit, and then the measuring face conversion device is installed at the flange face of each branch pipe. Because the measuring face conversion device has measuring flanges, the original 68.4° measuring angle of the branch pipe flange face can be converted to a 90° measuring angle. Therefore, when the measuring arm moves to measure distance... When the measuring instrument is positioned opposite the measuring flange, the measuring flange and the distance measuring instrument are perpendicular to each other. At this time, the distance measuring instrument can automatically and accurately detect the measuring line to obtain the distance value. This distance value, plus the length of the measuring arm, can obtain the distance between the center position of the hydro-generator unit and the flange face of the distribution ring pipe branch pipe. Compared with the traditional manual measurement method using piano wire and tape measure, the installation measuring device of this scheme can automatically complete the distance measurement, and the measurement accuracy and efficiency are high, which helps to ensure the installation and construction cycle and construction quality of the hydro-generator unit and its distribution ring pipe.

[0009] The technical solution of this application will be further described below:

[0010] In one embodiment, the rotating measuring device further includes a base, a central shaft, a balance arm, a counterweight, and a bracket. The base is used to install at the center of the hydro-generator set. The central shaft is rotatably mounted on the base. The balance arm is connected to the measuring arm and is mounted on the central shaft. The counterweight is located at the end of the balance arm away from the measuring arm. The bracket is located at the end of the measuring arm away from the balance arm. The rangefinder is mounted on the bracket.

[0011] In one embodiment, the bracket includes a connecting plate and a fixing plate. The connecting plate is connected to the end of the measuring arm away from the central axis, and the fixing plate is connected at an angle to the end of the connecting plate. The rangefinder is mounted on the fixing plate and is configured to face the measuring surface conversion device.

[0012] In one embodiment, the rotary measuring device further includes a drive mechanism, a drum, and a wire rope. The drive mechanism is located at the top of the central shaft and is connected to the drum in a driving manner. One end of the wire rope is fixed to the drum and is wound and installed on the outer wall of the drum. The other end of the wire rope is connected to the balance arm and the measuring arm in a driving manner.

[0013] In one embodiment, the measuring face conversion device further includes a mounting flange and a hinge, the mounting flange being used to install onto the flange face of the water distribution ring pipe branch pipe, and the edge of the mounting flange being rotatably connected to the edge of the measuring flange via the hinge.

[0014] In one embodiment, the measuring surface conversion device further includes a first support member, which is spaced apart from the hinge. One end of the first support member is connected to the mounting flange, and the other end of the first support member is connected to the measuring flange.

[0015] And / or, the measuring flange is provided with a first weight reduction groove;

[0016] And / or, the measuring line is a cross-shaped line formed on the side of the measuring flange opposite to the mounting flange.

[0017] In one embodiment, a positioning plate is provided in the middle of the mounting flange, and the positioning plate engages with a central protrusion on the flange surface for positioning with the branch pipe of the water distribution ring pipe.

[0018] And / or, the mounting flange is provided with a mounting through hole;

[0019] And / or, the mounting flange is provided with a second weight-reducing groove.

[0020] In one embodiment, the water distribution ring pipe installation measuring device for the hydro-generator set further includes a water distribution ring pipe inlet flange. The water distribution ring pipe inlet flange includes a support base, a support frame, and a distance measuring sensor. The support frame is disposed on the support base, and the measurement center elevation of the support frame is consistent with the center elevation of the water distribution ring pipe inlet flange. The distance measuring sensor is mounted on the support frame and configured to measure the verticality and flatness of the water distribution ring pipe inlet flange.

[0021] In one embodiment, the water distribution ring pipe inlet flange further includes a counterweight line and a second support member. The counterweight line is disposed on the support frame, one end of the second support member is connected to the support base, and the other end of the second support member is connected to the support frame.

[0022] A second aspect of this application also proposes an installation and measurement method for the water distribution ring pipe installation measurement device of a hydro-generator set as described in any of the above embodiments, comprising the following steps:

[0023] Measurement and layout are used to obtain the position of the inlet flange of the water distribution ring pipe and the center position of the turbine generator set, as well as the rough layout of the position of the branch flange of the water distribution ring pipe;

[0024] Hoisting of water distribution ring pipe sections;

[0025] Install the rotating measuring device at the center of the hydro-generator unit;

[0026] Install the measuring surface conversion device onto the flange face of the water distribution ring pipe branch;

[0027] Positioning and adjustment of adjacent water distribution ring pipe branch pipes;

[0028] After completing the welding and assembly of each water distribution ring pipe section, the deformation of the water distribution ring pipe section is monitored in real time using a rotary measuring device and a measuring surface conversion device to ensure that the welding deformation of the water distribution ring pipe is within a controllable range. Attached Figure Description

[0029] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a diagram of a measuring device for the installation of a water distribution ring pipe in a hydro-generator unit, as described in one embodiment.

[0032] Figure 2 This is a schematic diagram illustrating the installation and measurement principle of a water distribution ring pipe according to one embodiment.

[0033] Figure 3 This is a schematic diagram illustrating the measurement and layout principle of a water distribution ring pipe according to one embodiment.

[0034] Figure 4 This is a schematic diagram of the structure of a rotary measuring device according to an embodiment.

[0035] Figure 5 for Figure 4 A structural diagram from another perspective.

[0036] Figure 6 This is a schematic diagram of the structure of a measurement surface conversion device according to one embodiment.

[0037] Figure 7 for Figure 6 A schematic diagram of the structure of the measuring flange.

[0038] Figure 8 for Figure 6 A schematic diagram of the structure for mounting flanges.

[0039] Figure 9 This is a front view structural schematic diagram of the inlet flange of a water distribution ring pipe according to one embodiment.

[0040] Figure 10 for Figure 9 A side view structural diagram.

[0041] Figure 11 This is a flowchart illustrating the steps of an installation and measurement method for a water distribution ring pipe installation measuring device for a hydro-generator set, as shown in one embodiment.

[0042] Explanation of reference numerals in the attached figures:

[0043] 100. Measuring device for water distribution ring pipe installation of hydro-generator unit; 10. Rotary measuring equipment; 11. Measuring arm; 12. Rangefinder; 13. Base; 14. Central shaft; 15. Balance arm; 16. Counterweight; 17. Connecting plate; 18. Fixing plate; 19. Drive mechanism; 19a. Drum; 19b. Wire rope; 20. Measuring surface conversion device; 21. Measuring flange; 211. Measuring line; 212. First weight reduction groove; 22. Installation... 221. Flange; 222. Positioning plate; 223. Mounting through hole; 224. Second weight reduction groove; 23. Hinge; 24. First support component; 30. Water distribution ring pipe inlet flange; 31. Support seat; 32. Support frame; 33. Distance sensor; 34. Weight line; 35. Second support component; 40. Mounting platform; 50. Walking auxiliary platform; 100a. Water distribution ring pipe; 110a. Water distribution ring pipe branch pipe; 120a. Water distribution ring pipe section. Detailed Implementation

[0044] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0045] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0046] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0050] See Figure 1 This application illustrates an installation and measurement device for a water distribution ring pipe 100a of a hydro-generator unit, comprising an installation platform 40, a rotating measuring device 10, a measuring surface conversion device 20, and a walking auxiliary platform 50.

[0051] The installation platform 40 is a ring structure, cast in concrete, and is used to support and place the water distribution ring pipe 100a.

[0052] The walking assistance platform 50 is located in the inner ring cavity of the installation platform 40. It is a temporary platform structure used to support workers so that they can perform installation and adjustment work. It needs to be removed after the water distribution ring pipe 100a is installed.

[0053] For example, the walking assistance platform 50 can be a frame structure, etc.

[0054] Please continue reading. Figures 1 to 7 The rotating measuring device 10 is used to be installed at the center of the hydro-generator unit, and the rotating measuring device 10 includes a rotatable measuring arm 11 and a rangefinder 12 at the end of the measuring arm 11; the measuring surface conversion device 20 is used to be installed at the flange face of the water distribution ring pipe branch pipe 110a, the measuring surface conversion device 20 includes a measuring flange 21, the measuring flange 21 is used to be perpendicular to the rangefinder 12, and a measuring line 211 is provided on the measuring flange 21, the measuring line 211 is used to work in conjunction with the rangefinder 12.

[0055] In summary, implementing the technical solution of this embodiment will achieve the following beneficial effects: The installation measuring device of this solution is applied to the application of detecting the installation accuracy of the water distribution ring pipe 100a of a hydro-generator unit. The water distribution ring pipe 100a has multiple water distribution ring pipe branches 110a arranged at intervals along the circumferential direction. In use, the rotating measuring device 10 is installed at the center position of the hydro-generator unit, and then the measuring surface conversion device 20 is installed at the flange face of each water distribution ring pipe branch 110a. Since the measuring surface conversion device 20 is equipped with a measuring flange 21, the measuring flange 21 can convert the original 68.4° measuring angle of the flange face of the water distribution ring pipe branch 110a to 90°. The included angle is measured so that when the measuring arm 11 drives the distance measuring instrument 12 to be opposite the measuring flange 21, the measuring flange 21 and the distance measuring instrument 12 are perpendicular to each other. At this time, the distance measuring instrument 12 can automatically and accurately detect the measuring line 211 to obtain the distance value. This distance value, plus the length of the measuring arm 11, can obtain the distance between the center position of the hydro-generator unit and the flange face of the distribution ring pipe branch pipe 110a. Compared with the traditional manual measurement method using piano wire and tape measure, the installation measuring device of this scheme can automatically complete the distance measurement, and the measurement accuracy and efficiency are high, which helps to ensure the installation construction cycle and construction quality of the hydro-generator unit and its distribution ring pipe 100a.

[0056] Please continue reading. Figure 2 and Figure 3In this application, the water distribution ring pipe 100a has six water distribution ring pipe branches 110a, each water distribution ring pipe branch 110a is used to connect a nozzle, and the six nozzles are spaced around the outer periphery of the water bucket of the water turbine generator set, and are used to spray water flow into the water bucket together to drive the impeller installed with the water bucket to rotate, thereby realizing the conversion of the kinetic energy of the water flow into electrical energy.

[0057] Because the nozzles need to be angled towards the turbine blades at a certain tilt, the flange face of the distribution ring pipe branch 110a is also tilted at a certain angle relative to the center of the turbine generator set, typically 68.4°. Based on this, the measurement of the installation position accuracy of the distribution ring pipe 100a can be converted into the measurement of the position accuracy of the flange face of each distribution ring pipe branch 110a.

[0058] Please continue reading. Figure 4 and Figure 5 In one embodiment, the rotating measuring device 10 further includes a base 13, a central shaft 14, a balance arm 15, a counterweight 16, and a bracket. The base 13 is used to install to the center position of the hydro-generator set. The central shaft 14 is rotatably mounted on the base 13. The balance arm 15 is connected to the measuring arm 11 and is mounted on the central shaft 14. The counterweight 16 is located at the end of the balance arm 15 away from the measuring arm 11. The bracket is located at the end of the measuring arm 11 away from the balance arm 15. The rangefinder 12 is mounted on the bracket.

[0059] During installation, the base 13 supports and fixes the central shaft 14, which is rotatably configured to provide rotational freedom so that the measuring arm 11 can drive the rangefinder 12 to measure different water distribution ring branch pipes 110a in the circumferential direction. Specifically, the rotation of the central shaft 14 can be manually driven or automatically driven by a power device, whichever is more appropriate to the actual needs.

[0060] Since the measuring arm 11 adopts a cantilever structure and is set on the central shaft 14, a balance arm 15 and a counterweight 16 are set together with the measuring arm 11 to establish a force balance relationship, so as to ensure the overall structural stability of the rotating measuring device 10 and its smooth and reliable rotation.

[0061] The rangefinder 12 is mounted on a bracket and can directly face the measuring surface conversion device 20 installed on the water distribution ring pipe branch pipe 110a without obstruction, so as to facilitate distance measurement. For example, the rangefinder 12 is a laser rangefinder 12 with a measurement accuracy of 0.1 mm and a measurement range of 10 cm, which can ensure high measurement accuracy.

[0062] Please continue reading. Figure 4 and Figure 5More specifically, based on the above embodiment, the bracket includes a connecting plate 17 and a fixing plate 18. The connecting plate 17 is connected to the end of the measuring arm 11 away from the central axis 14, and the fixing plate 18 is connected at an angle to the end of the connecting plate 17. The rangefinder 12 is mounted on the fixing plate 18 and is positioned facing the measurement surface conversion device 20. The connecting plate 17 connects the measuring arm 11 and the fixing plate 18, and the fixing plate 18 directly mounts the rangefinder 12 so that the rangefinder 12 directly faces the measuring flange 21 and obtains the distance value by detecting the measuring line 211. The fixing plate 18 is inclined at a 30° angle on the connecting plate 17, thereby enabling the rangefinder 12 to better obtain the complete outline of the measuring line 211, thus improving measurement accuracy.

[0063] Optionally, fixing plates 18 are installed at both ends of the horizontally set connecting plate 17 along its length. The fixing plates 18 are set vertically, and rangefinders 12 are installed at the top, middle, and bottom of the fixing plates 18. This allows the rangefinders 12 on the two fixing plates 18 to simultaneously detect the two adjacent water distribution ring pipe branches 110a, greatly improving measurement efficiency.

[0064] Depending on actual needs, the installation method between the connecting plate 17 and the measuring arm 11, and between the connecting plate 17 and the fixing plate 18, can be any one of screw connection, snap connection, welding, riveting, etc., and no specific limitation is made here.

[0065] Please continue reading. Figure 4 and Figure 5 Furthermore, in another embodiment, the rotary measuring device 10 also includes a drive mechanism 19, a drum 19a, and a wire rope 19b. The drive mechanism 19 is located at the top of the central shaft 14 and is connected to the drum 19a in a driving connection. One end of the wire rope 19b is fixed to the drum 19a and is wound and installed on the outer wall of the drum 19a. The other end of the wire rope 19b is connected to the balance arm 15 and the measuring arm 11 in a driving connection.

[0066] During operation, the drive mechanism 19 drives the drum 19a to rotate. When the drum 19a winds and retracts the wire rope 19b, the wire rope 19b correspondingly pulls the balance arm 15 and the measuring arm 11 upward, thereby adjusting the measuring height of the rangefinder 12. Conversely, when the drum 19a releases the wire rope 19b, the wire rope 19b correspondingly releases the balance arm 15 and the measuring arm 11 downward, thereby adjusting the measuring height of the rangefinder 12. In other words, through the aforementioned drive structure, the height position of the rangefinder 12 can be flexibly adjusted to meet the measurement needs of different sized water distribution ring pipe branch pipes 110a.

[0067] Please continue reading. Figures 6 to 8In one embodiment, the measuring face conversion device 20 further includes a mounting flange 22 and a hinge 23. The mounting flange 22 is used to install onto the flange face of the water distribution ring pipe branch 110a. The edge of the mounting flange 22 is rotatably connected to the edge of the measuring flange 21 via the hinge 23. The flange face is installed onto the flange face of the water distribution ring pipe branch 110a to form a mounting base and also serves as a load-bearing component of the entire measuring face conversion device 20. The hinge 23 provides rotational freedom to rotatably mount the measuring flange 21 onto the mounting flange 22, and there is a 21.6° opening and closing adjustment angle between the measuring flange 21 and the mounting flange 22, facilitating flexible adjustment of the spatial angle of the measuring flange 21. After the measuring flange 21 and the mounting flange 22 are adjusted to the required angle position, the hinge 23, the measuring flange 21, and the mounting flange 22 can be fixed into a whole by welding to obtain better overall structural performance.

[0068] In this application, the measuring flange 21 has a high machining accuracy on its side facing the rangefinder 12. The line connecting the center of the measuring flange 21 and the center of the mounting flange 22 is perpendicular to the measuring flange 21.

[0069] Please continue reading. Figure 6 Furthermore, based on the above embodiments, the measuring surface conversion device 20 also includes a first support member 24, which is spaced apart from the hinge 23. One end of the first support member 24 is connected to the mounting flange 22, and the other end is connected to the measuring flange 21. The first support member 24 is used to support and reinforce the mounting flange 22 and the measuring flange 21, so that the measuring surface conversion device 20 can obtain better structural stability.

[0070] For example, the first support member 24 can be a support plate, angle steel, or one of the following. After the measuring flange 21 and the mounting flange 22 are adjusted to the correct angle, they can be connected and fixed to the measuring flange 21 and the mounting flange 22 by any one of the following methods: welding, snap-fit, screwing, etc.

[0071] The measuring flange 21 has a first weight-reducing groove 212. This reduces the weight of the measuring flange 21, making it easier to install and use the measuring face conversion device 20.

[0072] In this application, the measuring flange 21 includes an annular portion and a cross portion connected within the annular portion. Multiple first weight-reducing grooves 212 are spaced apart along the circumferential direction on the annular portion, and multiple first weight-reducing grooves 212 are arranged along the cross direction on the cross portion, so as to achieve the maximum lightweight design of the measuring flange 21.

[0073] Optionally, the measuring line 211 is a cross-shaped line formed on the side of the measuring flange 21 opposite to the mounting flange 22. This helps to improve the measuring accuracy of the rangefinder 12.

[0074] Please continue reading. Figure 8 In another embodiment, a positioning disc 221 is provided in the middle of the mounting flange 22. The positioning disc 221 engages with a central protrusion on the flange surface of the water distribution ring pipe branch pipe 110a for positioning. The positioning disc 221 is a high-precision machined component. Therefore, by engaging the positioning disc 221 with the central protrusion, high-precision positioning of the mounting flange 22 can be achieved, which helps to improve the accuracy of the measurement results.

[0075] In one embodiment, the mounting flange 22 has mounting through holes 222. The mounting through holes 222 are used to align with threaded holes on the flange face of the water distribution ring pipe branch 110a, so that bolts can be screwed in to lock and fix the mounting flange 22. Preferably, multiple mounting through holes 222 are provided and arranged at intervals along the circumference of the mounting flange 22, thereby further improving the stability of the mounting flange 22 installation by installing multiple bolts.

[0076] Please continue reading. Figure 8 Furthermore, the mounting flange 22 is provided with a second weight-reducing groove 223. This enables the weight-reducing design of the mounting flange 22, improves the lightweight level of the measuring surface conversion device 20, and makes it more convenient and labor-saving to use.

[0077] Please continue reading. Figure 2 , Figure 3 , to the point Figure 9 and Figure 10 Furthermore, based on any of the above embodiments, the measuring device for the water distribution ring pipe 100a of the hydro-generator unit also includes a water distribution ring pipe inlet flange 30. The water distribution ring pipe inlet flange 30 includes a support base 31, a support frame 32, and a distance sensor 33. The support frame 32 is mounted on the support base 31, and the measurement center elevation of the support frame 32 is consistent with the center elevation of the water distribution ring pipe inlet flange 30. The distance sensor 33 is mounted on the support frame 32 and is configured to measure the verticality and flatness of the water distribution ring pipe inlet flange 30.

[0078] The support base 31 serves as a basic component for mounting and fixing the support frame 32. During installation, the support frame 32 is placed on the center intersection line of the water distribution ring pipe inlet flange 30 to obtain a high-precision installation reference.

[0079] Furthermore, the inlet flange 30 of the water distribution ring pipe also includes a plumb line 34 and a second support member 35. The plumb line 34 is mounted on the support frame 32, and one end of the second support member 35 is connected to the support base 31, while the other end is connected to the support frame 32. The plumb line 34 is suspended on the support frame 32 to measure the verticality of the support frame 32, preventing the support frame 32 from being installed skewed and affecting the accuracy of subsequent measurements. The second support member 35 is specifically an inclined support, serving to provide oblique auxiliary support and reinforcement for the support frame 32.

[0080] Please continue reading. Figure 11 and combined Figure 2 and Figure 3 In addition to the above, this application also proposes an installation measurement method for the water distribution ring pipe 100a of a hydro-generator set as described in any of the above embodiments, comprising the following steps:

[0081] S10: Measure and lay out to obtain the position of the inlet flange 30 of the water distribution ring pipe and the center position of the turbine generator set, as well as the rough layout of the flange position of the branch pipe 110a of the water distribution ring pipe.

[0082] S20: Hoisting of the 120a water distribution ring pipe section.

[0083] S30: Install the rotating measuring device 10 at the center of the hydro-generator unit.

[0084] S40: Install the measuring surface conversion device 20 onto the flange face of the water distribution ring pipe branch pipe 110a.

[0085] S50: Position and adjust the adjacent water distribution ring pipe branch pipes 110a.

[0086] S60: Complete the welding and assembly of each water distribution ring pipe section 120a. Use the rotary measuring device 10 and the measuring surface conversion device 20 to monitor the deformation of the water distribution ring pipe section 120a in real time to ensure that the welding deformation of the water distribution ring pipe 100a is within a controllable range.

[0087] More specifically, in step S10, by measuring and setting out, the transverse axis and longitudinal axis of one water distribution ring pipe inlet flange 30 can be accurately measured. By measuring and setting out, the X-axis and Y-axis of the center position of the hydro-generator unit can be accurately measured. By measuring and setting out, the transverse and longitudinal axes of the flange faces of the six water distribution ring pipe branches 110a can be marked, with the error controlled within 5cm.

[0088] In this application, the water distribution ring pipe 100a has a certain length. In order to facilitate assembly and disassembly, the water distribution ring pipe 100a is usually composed of multiple water distribution ring pipe sections 120a spliced ​​together.

[0089] In step S20, the first section of the water distribution ring pipe 120a is hoisted: the first section of the water distribution ring pipe 120a is hoisted to the inlet of the water distribution ring pipe 100a, and the horizontal and vertical axes of the flange of the first section of the water distribution ring pipe 120a must coincide with the horizontal and vertical axes of the inlet flange 30 of the water distribution ring pipe. Next, the second section of the water distribution ring pipe branch pipe 110a is hoisted: according to the layout drawing of the water distribution ring pipe 100a, the remaining 6 sections of the water distribution ring pipe branch pipe 110a are hoisted sequentially to the rough sketch position of the flange of the water distribution ring pipe 100a, with an accuracy controlled within 1 cm. Finally, the remaining sections of the water distribution ring pipe 120a are hoisted: according to the layout drawing of the water distribution ring pipe 100a, the remaining sections of the water distribution ring pipe 120a are hoisted to their corresponding positions.

[0090] In step S30, after the rotary measuring device 10 is installed, the base 13 must be located at the center of the hydro-generator unit (center of the water distribution ring pipe 100a), with an error not exceeding 0.5mm. The drive mechanism 19 drives the drum 19a, causing the wire rope 19b to move the balance arm 15 and the measuring arm 11 up and down together. The distance measuring instrument 12 at the center of the fixed plate 18 is aligned with the center elevation of the flange surface of the water distribution ring pipe branch pipe 110a, with an error not exceeding 0.5mm. Under the rotation of the bearing, the measuring arm 11 causes the wire rope 19b, drive mechanism 19, and drum 19a to rotate together. Using the principle of two-force balance, the counterweight 16 is appropriately increased or decreased to ensure that the rotational swing does not exceed 0.05mm.

[0091] Design key data calculation:

[0092] R1: The distance from the center of the theoretical water distribution ring pipe 100a to the center of the flange of the water distribution ring pipe branch pipe 110a, a known value;

[0093] D: is the diameter of the flange of the 110a branch pipe of the water distribution ring pipe, which is a known value;

[0094] L1: is the length of measuring arm 11;

[0095] L2: is the theoretical length of the perpendicular bisector of the line connecting the center of the hydro-generator unit to the flange of the 110a branch pipe of the two adjacent water distribution ring pipes. It is a known value.

[0096] S1: The theoretical distance between the flanges of two adjacent water distribution ring pipes branching into 110a flanges is a known value;

[0097] S2: Length of connecting plate 17412;

[0098] R2 = R1 - 1 / 2Dtan(21.6°) - Length of the rangefinder body 12;

[0099] L1 = R2 * cos(30°);

[0100] S2 = (L1 * S1) / L2.

[0101] In step S50, the support frame 32 is placed at the inlet flange 30 of the water distribution ring pipe. The longitudinal axis of the support frame 32 coincides with the transverse axis of the inlet flange 30 of the water distribution ring pipe, and the transverse axis of the support frame 32 is parallel to the transverse axis of the inlet flange 30 of the water distribution ring pipe, with a parallel spacing of no more than 5cm. The overall verticality of the support frame 32 is adjusted using a plumb line 34. The distance sensor 33 measures the elevation, verticality, and flatness of the inlet flange 30 of the water distribution ring pipe. The manufacturer of the water distribution ring pipe 100a will design jacks for adjusting the elevation and verticality of the water distribution ring pipe 100a. Adjustments are made using jacks on the equipment body to ensure that the verticality and center elevation errors do not exceed 0.5mm. The flatness is adjusted externally using jacks to adjust left, right, front, and back to ensure that the flatness does not exceed 0.5mm.

[0102] If the first section of the water distribution ring pipe 120a and the branch pipe 110a of the water distribution ring pipe are one section, the flange of the branch pipe 110a of the water distribution ring pipe should be precisely positioned and adjusted. Since the inlet of the water distribution ring pipe 100a is already determined, the position of the flange of the branch pipe 110a of the water distribution ring pipe is basically determined as well. The specific steps are as follows: 1) Rotate the rotating measuring device 10 clockwise until the left fixed plate 18 of the rotating measuring device 10 is rotated to the center of the flange of the branch pipe 110a of the water distribution ring pipe. 2) Adjust the verticality of the flange of the branch pipe 110a of the water distribution ring pipe: Use the three distance measuring instruments 12 in the vertical direction of the left fixed plate 18 to measure the verticality data, and use the jack of the water distribution ring pipe 100a to adjust the verticality and center elevation. 3) Flatness Adjustment of the Flange of the Distribution Ring Pipe Branch 110a: Adjust the flange of the distribution ring pipe branch 110a so that the three distance measuring instruments 12 in the vertical direction of the left fixed plate 18 coincide with the vertical measuring line 211. Use the three distance measuring instruments 12 in the vertical direction of the left fixed plate 18 to measure the flatness, the difference between the laser tracker data and the flatness. Apply force to the support of the distribution ring pipe branch 110a externally with a jack, and adjust left, right and back and forth to make the flatness within 0.5mm. 4) Data Verification: Check the verticality, horizontality and elevation of the flange of the inlet distribution ring pipe 100a and the flange of the distribution ring pipe branch 110a. If they do not meet the requirements, make fine adjustments according to the above steps.

[0103] If the first section of the water distribution ring pipe 120a and the flange of the water distribution ring pipe branch pipe 110a are not the same section, and there is a straight pipe section of the water distribution ring pipe 100a in between, the inlet flange 30 of the water distribution ring pipe should be adjusted first to meet the requirements. Then, the straight pipe section of the water distribution ring pipe 100a should be adjusted to be parallel to the water distribution ring pipe section 120a at the water inlet. The section of the water distribution ring pipe branch pipe 110a should be parallel to the straight pipe section of the water distribution ring pipe 100a. The spacing between the weld joints and the misalignment should be 2mm, and the maximum should not exceed 4mm.

[0104] In step S50, after the first water distribution ring pipe branch pipe 110a is positioned and the flange data of the water distribution ring pipe branch pipe 110a is adjusted to be qualified, the next adjacent water distribution ring pipe branch pipe 110a is installed.

[0105] If there is no straight section of water distribution ring pipe 100a between the first water distribution ring pipe branch and the adjacent second water distribution ring pipe branch: there is no need to rotate the rotating measuring device 10. Ensure that the three distance measuring instruments 12 in the vertical direction of the left fixed plate 18 of the rotating measuring device 10 always coincide with the measuring line 211 of the flange of the first water distribution ring pipe branch and ensure that the data does not change at all. At this time, take the left fixed plate 18 as the reference and use the right side of the fixed plate 18 to adjust the flange of the next water distribution ring pipe branch 110a.

[0106] If there is a straight section of water distribution ring pipe 100a between the first water distribution ring pipe branch and the adjacent second water distribution ring pipe branch, the straight section of water distribution ring pipe 100a should be placed between the two pipe openings after the flange data of the next water distribution ring pipe branch 110a is adjusted to be qualified. The spacing should be even and not exceed 4mm.

[0107] In step S60, after all pipe sections of the water distribution ring pipe 100a are assembled, they are welded into a whole. During the welding process, the rotating measuring device 10 is rotated at all times, and the rangefinders 12 on the left and right sides of the fixed plate 18 are used to check the deformation of the flange of the water distribution ring pipe 100a at all times, and the feedback is given to the welding personnel in real time so that the welding process can be adjusted in a timely manner to ensure that the welding deformation of the water distribution ring pipe 100a is within a controllable range.

[0108] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0109] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A measuring device for the installation of a water distribution ring pipe in a hydro-generator set, characterized in that, include: A rotating measuring device is used to be installed at the center of a hydro-generator unit, and the rotating measuring device includes a rotatable measuring arm and a distance measuring instrument disposed at the end of the measuring arm; A measuring face conversion device is used to be installed at the flange face of the water distribution ring pipe branch pipe. The measuring face conversion device includes a measuring flange, which is perpendicular to the rangefinder. A measuring line is provided on the measuring flange, which is used to work in conjunction with the rangefinder. The rotating measuring device also includes a base, a central shaft, a balance arm, a counterweight, and a support. The base is used to install the device at the center of the hydro-generator set. The central shaft is rotatably mounted on the base. The balance arm is connected to the measuring arm and is mounted on the central shaft. The counterweight is located at the end of the balance arm away from the measuring arm. The support is located at the end of the measuring arm away from the balance arm. The rangefinder is mounted on the support. The measuring face conversion device further includes a mounting flange and a hinge. The mounting flange is used to install onto the flange face of the water distribution ring pipe branch pipe, and the edge of the mounting flange is rotatably connected to the edge of the measuring flange via the hinge. The water distribution ring pipe installation measurement device for the hydro-generator set also includes a water distribution ring pipe inlet flange. The water distribution ring pipe inlet flange includes a support base, a support frame, and a distance measuring sensor. The support frame is mounted on the support base, and the measurement center elevation of the support frame is consistent with the center elevation of the water distribution ring pipe inlet flange. The distance measuring sensor is mounted on the support frame and configured to measure the verticality and flatness of the water distribution ring pipe inlet flange.

2. The measuring device for the installation of the water distribution ring pipe of a hydro-generator unit according to claim 1, characterized in that, The bracket includes a connecting plate and a fixing plate. The connecting plate is connected to the end of the measuring arm away from the central axis. The fixing plate is connected at an angle to the end of the connecting plate. The rangefinder is mounted on the fixing plate and is used to face the measuring surface conversion device.

3. The measuring device for the installation of the water distribution ring pipe of a hydro-generator unit according to claim 1, characterized in that, The rotary measuring device further includes a drive mechanism, a drum, and a wire rope. The drive mechanism is located at the top of the central shaft and is connected to the drum in a driving manner. One end of the wire rope is fixed to the drum and is wound and installed on the outer wall of the drum. The other end of the wire rope is connected to the balance arm and the measuring arm in a driving manner.

4. The measuring device for the installation of the water distribution ring pipe of a hydro-generator unit according to claim 1, characterized in that, The measuring surface conversion device further includes a first support member, which is spaced apart from the hinge. One end of the first support member is connected to the mounting flange, and the other end of the first support member is connected to the measuring flange. And / or, the measuring line is a cross-shaped line formed on the side of the measuring flange opposite to the mounting flange.

5. The measuring device for the installation of the water distribution ring pipe of a hydro-generator unit according to claim 1 or 4, characterized in that, The measuring flange has a first weight-reducing groove.

6. The measuring device for the installation of the water distribution ring pipe of a hydro-generator unit according to claim 1, characterized in that, A positioning plate is provided in the middle of the mounting flange, and the positioning plate is engaged with the central protrusion on the flange surface of the water distribution ring pipe for positioning.

7. The measuring device for the installation of the water distribution ring pipe of a hydro-generator unit according to claim 1 or 6, characterized in that, The mounting flange has a mounting through hole.

8. The measuring device for the installation of the water distribution ring pipe of a hydro-generator unit according to claim 1 or 6, characterized in that, The mounting flange is provided with a second weight-reducing groove.

9. The measuring device for the installation of the water distribution ring pipe of a hydro-generator unit according to claim 1, characterized in that, The inlet flange of the water distribution ring pipe also includes a counterweight line and a second support member. The counterweight line is set on the support frame, one end of the second support member is connected to the support base, and the other end of the second support member is connected to the support frame.

10. An installation and measurement method for the water distribution ring pipe installation measuring device of a hydro-generator unit as described in any one of claims 1 to 9, characterized in that, Includes the following steps: Measurement and layout are used to obtain the position of the inlet flange of the water distribution ring pipe and the center position of the turbine generator set, as well as the rough layout of the position of the branch flange of the water distribution ring pipe; Hoisting of water distribution ring pipe sections; Install the rotating measuring device at the center of the hydro-generator unit; Install the measuring surface conversion device onto the flange face of the water distribution ring pipe branch; Positioning and adjustment of adjacent water distribution ring pipe branch pipes; After completing the welding and assembly of each water distribution ring pipe section, the deformation of the water distribution ring pipe section is monitored in real time using a rotary measuring device and a measuring surface conversion device to ensure that the welding deformation of the water distribution ring pipe is within a controllable range.

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