Steam turbine embedded part fixing device and method

Abstract

The invention discloses a steam turbine embedded part fixing device and method.The device comprises a sample plate frame, a positioning sleeve plate, an anchoring plate and a locking device, the sample plate frame comprises a plurality of vertically-fixed steel bar latticed columns, a beam structure horizontally and fixedly connected to the top ends of the steel bar latticed columns and a steel beam, and the beam structure comprises a plurality of main beams, secondary beams and supporting beams; the main beams, the secondary beams and the supporting beams are fixedly connected with one another to form an integral frame; the positioning sleeve plate comprises an anchoring area positioning sleeve plate and a suspension area positioning sleeve plate, and the anchoring plate is vertically installed on the inner side wall of a steam turbine base operation layer; the locking device comprises an embedded type locking piece and a penetrating type locking piece, the embedded type locking piece and the penetrating type locking piece are fixedly connected with the sample plate frame and the positioning sleeve plate correspondingly and used for adjusting the relative position relation between the embedded part and the sample plate frame, and the sample plate frame is suitable for being recycled and reused. The invention further provides a fixing method, the sample plate frame is easy to assemble and disassemble while being recycled, the construction period is remarkably shortened, and the construction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steam turbine construction, in particular to a steam turbine embedded part fixing device and method. BACKGROUND

[0002] The steam turbine of a conventional nuclear island steam turbine plant is the core equipment for converting nuclear energy into electrical energy, and the embedded part installation provides accurate support and positioning reference for the steam turbine generator and its auxiliary equipment. The embedded part is a component pre-installed (buried) in a concealed project, i.e. a component pre-installed during pouring of concrete, mainly serving as a connecting piece or a lapping piece in the subsequent construction process. The use of embedded parts can reduce the operation of installing components through secondary construction of concrete walls in the later stage, thereby improving the efficiency of installing and fixing the foundation of external engineering equipment.

[0003] Due to various factors, the installation quality of embedded parts in the industry is uneven, and it is difficult to achieve high-precision installation standards. In small modular reactors, the precision requirement for embedded part installation is more stringent. Compared with traditional construction methods, not only is the efficiency low, but also it is difficult to ensure installation precision, which brings significant hidden dangers to subsequent equipment installation and operation.

[0004] At present, before pouring the concrete platform of the equipment base for installing and fixing the steam turbine, the installation and fixation of the embedded part mainly adopts two methods: one is for small embedded parts, and the embedded part is fixed on the steel bars on the equipment base bottom form by iron wire during the binding process of the steel bars; the other is for large embedded parts, and the large embedded parts are fixed and connected with the temporary supports erected on the equipment base bottom form.

[0005] However, during the construction process of the steam turbine embedded part, especially for the embedded parts with positioning function and relative position relationship requirement, the following problems exist when the above conventional method is used for the installation and fixation of the embedded part: 1. Since the embedded part is directly fixed and connected with the steel bars or temporary supports by iron wire, the position of the embedded part cannot be accurately adjusted during installation and in the subsequent pouring process of the concrete.

[0006] 2. Since the stability of the steel bars and temporary supports is poor, the impact force generated during the pouring of the concrete will impact the embedded part, causing a dramatic change in the fixed position of the embedded part. Moreover, in this case, the change in the position of the embedded part caused by the impact of the concrete is random and uncontrollable, so the installation precision of the embedded part often cannot meet the design requirements, resulting in the steam turbine being unable to be normally installed and fixed, affecting the entire construction progress. SUMMARY

[0007] In view of the above, the purpose of the present application is to provide a steam turbine embedded part fixing device and method to solve the technical problems of the prior art, i.e., the embedded part cannot be accurately adjusted and the installation precision is low.

[0008] To at least solve one of the above problems, the first purpose of the present application is to provide a steam turbine embedded part fixing device, comprising: A template frame, comprising a plurality of vertical steel lattice columns fixedly connected to the running layer of the steam turbine base, a beam structure fixedly connected to the top end of the steel lattice columns, and a steel beam, wherein the beam structure comprises a plurality of main beams, secondary beams, and support beams, and the main beams, secondary beams, and support beams are fixedly connected to each other to form an integral frame; A positioning sleeve plate, comprising an anchoring area positioning sleeve plate and a suspension area positioning sleeve plate; An anchoring plate, vertically installed on the inner side wall of the running layer of the steam turbine base; A locking device, comprising a buried locking part and a through locking part, wherein the buried locking part and the through locking part are fixedly connected to the template frame and the positioning sleeve plate, respectively, for adjusting the relative positional relationship between the embedded part and the template frame, and the template frame is suitable for recycling and reuse.

[0009] Optionally, the anchoring area positioning sleeve plate comprises a plurality of first positioning sleeve plates and second positioning sleeve plates, the suspension area positioning sleeve plate comprises a third positioning sleeve plate arranged on one side of the first positioning sleeve plate and the second positioning sleeve plate, and a fourth positioning sleeve plate and a fifth positioning sleeve plate arranged on the other side of the first positioning sleeve plate and the second positioning sleeve plate.

[0010] Optionally, the anchoring plate comprises a screw rod fixedly connected vertically on both sides of the anchoring plate body, a channel steel beam and an adjusting pad arranged on the screw rod, and a nut threadedly connected to the top of the screw rod, wherein the adjusting pad is located directly above the channel steel beam, and the nut is suitable for pressing on the upper surface of the adjusting pad.

[0011] Optionally, the buried locking part comprises a buried sleeve, a first anchor bolt arranged in the buried sleeve, a first adjusting pad iron arranged on the first anchor bolt and located at the top end face of the buried sleeve, a first nut threadedly connected to the top end of the first anchor bolt, a plug arranged on the first anchor bolt and located at the bottom end face of the buried sleeve, and a reinforcing bar clamping on the outer surface of the buried sleeve; the other first nut is also suitable for being threadedly connected to the first anchor bolt and pressing on the lower surface of the plug.

[0012] Optionally, the through-type locking member comprises a through-type sleeve, a wooden module at the bottom of the through-type sleeve, a first iron nail, a second adjusting iron pad sleeve set on the outer circumference of the top of the through-type sleeve, and a second steel reinforcement clamping sleeve clamped on the outer circumference of the through-type sleeve; the top of the through-type sleeve is threaded through the first positioning sleeve plate and the second positioning sleeve plate, and the bottom end of the through-type sleeve is located on the base template of the turbine base operation layer; the wooden module is adapted to be fixedly connected to the base template by the first iron nail.

[0013] Optionally, the steel lattice column and the main beam and the secondary beam in the beam structure are symmetrically arranged on both sides of the center line direction of the steam turbine generator.

[0014] Optionally, the steel lattice column comprises three vertically and parallel arranged lattice column sub-limbs and a batten connected between any two adjacent lattice column sub-limbs; the bottom end of the lattice column sub-limb is fixedly connected to the base template of the turbine base operation layer by a steel head; the top end of the lattice column sub-limb is adjusted to be at the same elevation by a first embedded part.

[0015] Optionally, the cross-sectional side length of the steel lattice column is 198-202 mm, and the lattice column sub-limb and the batten are both made of C32 steel reinforcement.

[0016] Optionally, the main beam, the secondary beam and the support beam are all I-beam.

[0017] The second object of the present application is to provide an installation method of the turbine embedded part fixing device, comprising the following steps: S1: installing a template frame; according to the installation position of the base template of the turbine base operation layer, a plurality of steel lattice columns are arranged on the periphery of the base template for supporting and fixing the beam structure; a main beam, a secondary beam and a support beam are respectively erected in the horizontal plane where the upper end surface of the steel lattice column is located, and are fixedly connected with the steel lattice column to form an integral frame; the main beam and the secondary beam pass through near the upper part of the embedded part fixing position; wherein the upper end surface of the fixed steel lattice column is located in the same horizontal plane and is higher than the upper surface of the equipment base concrete platform formed after the completion of the concrete pouring operation; S2: installing a positioning sleeve plate; the anchor area positioning sleeve plate is hoisted to the designated installation position by a tower crane, and is adjusted and fixed in place by a worker in cooperation with a hand-operated hoist; the positioning sleeve plate of the suspension area positioning sleeve plate is hoisted above the base by a tower crane, and the top surface of the positioning sleeve plate is accurately aligned and fixed with the mark on the base support angle steel; S3: installing an anchor plate; the anchor plate is suspended between two channel steels by using a suspension type fixing technology; S4: install the locking device; according to the positioning requirements of the embedded locking part and the penetrating locking part, respectively, fix and install the embedded part; S5: pour the concrete; track and measure the position change of the embedded part through the total station; if the position deviation of the embedded part exceeds the design requirement, correct the position of the embedded part through the locking device; S6: remove the fixing device; when the concrete pouring is completed and the position re-measurement of the embedded part meets the standard, remove the fixing device exposed outside the concrete, and recycle the formwork.

[0018] Compared with the prior art, the present application has at least the following beneficial effects: The steam turbine embedded part fixing device in the present application comprises a formwork, a positioning sleeve plate, an anchoring plate and a locking device, wherein a plurality of steel lattice columns are vertically fixed on the steam turbine base operating layer to form a vertical support framework; beam structures (main beams, secondary beams and support beams) and steel beams are horizontally fixed at the top of the steel lattice columns to form a three-dimensional overall framework, which is the "measurement reference" and "construction reference" for positioning all subsequent embedded parts, and the framework itself is not bonded with the base concrete and has a detachable condition; the anchoring area positioning sleeve plate and the suspension area positioning sleeve plate are respectively installed at the corresponding positions of the formwork, and the embedded parts (anchors, sleeves, etc.) obtain horizontal and vertical positioning through the reserved holes or sliding grooves on the sleeve plate to form "primary positioning"; the anchoring plate is welded or bolted with the base steel reinforcement to ensure that no lateral displacement occurs during the concrete pouring process; in view of the problem that the anchor bolts and the anchoring plate are prone to deviation, the rigid formwork is combined with the positioning sleeve plate, the columns of the rigid formwork are made of steel reinforcement waste by welding, the main beams and the secondary beams are made of 28b I-shaped steel and are connected by upper and lower lap joints, which greatly reduces the difficulty of on-site installation and improves the fault tolerance and precision of installation; the positioning sleeve plate base is made of equal angle steel on site, which maximizes the installation accuracy according to the actual situation on site; due to the large volume, large mass and high installation precision requirement of the anchoring plate, the anchoring plate is installed by suspension on site, that is, the anchoring plate is suspended by a threaded rod with a thread at one end, and the subsequent elevation is adjusted by the thread to ensure that the installation precision meets the design standard, thereby improving the construction quality; the fixing sleeve plate is installed 20-30mm higher than the concrete structure surface, which facilitates easy removal after the structure construction is completed, and the removed sleeve plate can be recycled by 100%; as for the rigid formwork, only the four steel lattice columns embedded in the concrete columns cannot be recycled, and the remaining part can be recycled by 100%, so that the overall recycling rate is as high as 95%. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional structure schematic diagram of the steam turbine embedded part fixing device in the embodiment of the present application. Figure 2Fig. 1 is a schematic view of the positional relationship between the turbine embedded part fixing device and the turbine base operation layer platform in the embodiment of the present application; Figure 3 Fig. 2 is a schematic view of the position of the positioning sleeve plate in the embodiment of the present application; Figure 4 Fig. 3 is a schematic view of the three-dimensional structure of the steel lattice column in the embodiment of the present application; Figure 5 Fig. 4 is a schematic view of the overhead structure of the steel lattice column in the embodiment of the present application; Figure 6 Fig. 5 is a schematic view of the front structure of the steel lattice column in the embodiment of the present application; Figure 7 Fig. 6 is a schematic view of the front installation structure of the anchoring plate in the embodiment of the present application; Figure 8 Fig. 7 is a schematic view of the side installation structure of the anchoring plate in the embodiment of the present application; Figure 9 Fig. 8 is a schematic view of the overhead installation structure of the anchoring plate in the embodiment of the present application; Figure 10 Fig. 9 is a schematic view of the installation structure of the embedded locking part in the embodiment of the present application; Figure 11 Fig. 10 is a schematic view of the installation structure of the penetrating locking part in the embodiment of the present application.

[0020] Explanation of reference numerals: 1 - template frame; 11 - steel lattice column; 111 - lattice column branch; 1111 - first embedded part; 112 - patch; 113 - steel bar head; 12 - beam structure; 121 - main beam; 122 - secondary beam; 123 - support beam; 13 - steel beam; 2 - positioning sleeve plate; 21 - anchoring area positioning sleeve plate; 211 - first positioning sleeve plate; 212 - second positioning sleeve plate; 22 - suspension area positioning sleeve plate; 221 - third positioning sleeve plate; 222 - fourth positioning sleeve plate; 223 - fifth positioning sleeve plate; 3 - anchoring plate; 31 - screw; 32 - channel beam; 33 - adjustment pad; 34 - nut; 4 - locking device; 41 - embedded locking part; 411 - embedded sleeve; 412 - first anchor bolt; 413 - first adjustment pad iron; 414 - first nut; 415 - plug; 416 - steel bar clamping; 42 - penetrating locking part; 421 - penetrating sleeve; 422 - wooden module; 423 - first iron nail; 424 - second adjustment pad iron; 425 - second steel bar clamping; 5 - Turbine base operating layer; 51 - Base template. DETAILED DESCRIPTION

[0021] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application. In the description of the present application, it should be noted that the terms "first", "second", "third" and the like are only for the purpose of description and should not be understood as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements; it can be wireless connection, or it can be wired connection. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. Please refer to Figures 1-11 As shown in the drawings, the embodiment of the present application provides a steam turbine embedded part fixing device, which comprises a template frame 1, a positioning sleeve plate 2, an anchoring plate 3 and a locking device 4, wherein: The template frame 1 comprises a steel lattice column 11, a beam structure 12 and a steel beam 13, a plurality of steel lattice columns 11 are vertically fixedly connected on the turbine base operating layer 5, the beam structure 12 and the steel beam 13 are horizontally fixedly connected at the top of the steel lattice column 11, the beam structure 12 comprises a plurality of main beams 121, secondary beams 122 and support beams 123, and the main beams 121, the secondary beams 122 and the support beams 123 are fixedly connected with each other to form an integral frame; the positioning sleeve plate 2 comprises an anchoring area positioning sleeve plate 21 and a suspension area positioning sleeve plate 22; the anchoring plate 3 is vertically installed on the inner side wall of the turbine base operating layer 5; the locking device 4 comprises a buried type locking piece 41 and a penetrating type locking piece 42, the buried type locking piece 41 and the penetrating type locking piece 42 are fixedly connected with the template frame 1 and the positioning sleeve plate 2 respectively, for adjusting the relative position relationship between the embedded part and the template frame 1, and the template frame 1 is suitable for recycling and reuse.

[0022] Specific to the embodiment of the application, a plurality of steel lattice columns 11 are vertically fixed on the turbine base operation layer 5 to form a vertical support framework; beam structures 12 (main beams 121, secondary beams 122, and support beams 123) and steel beams 13 are horizontally fixed at the top ends of the steel lattice columns 11 to form a three-dimensional integral frame, which is a "measurement reference" and a "construction reference" for positioning all subsequent embedded parts, and the frame itself is not bonded with the base concrete and has a detachable condition; the anchoring area positioning sleeve plate 21 and the suspension area positioning sleeve plate 22 are respectively installed at the corresponding positions of the template frame 1, and through the reserved holes or sliding grooves on the sleeve plates, the embedded parts (anchors, sleeves, etc.) obtain horizontal and vertical positioning to form a "primary positioning"; the anchoring plate 3 is welded or bolted with the base steel reinforcement to ensure that no lateral displacement occurs during the concrete pouring process.

[0023] In the embodiment, the steel beams 13 are used to fixedly connect the anchoring area positioning sleeve plate 21 and the anchoring plate 3 of the suspension area, the main beams 121 and the secondary beams 122 are both 28b I-shaped steel, the main beams 121 are installed on the steel lattice columns 11 by means of a tower crane, and after being adjusted to a proper position, the main beams 121 are firmly welded with the steel plates at the top of the steel lattice columns 11; the secondary beams 122 are arranged on the top surface of the main beams 121 with the installation center line of the longitudinally same row of foundation bolts as a positioning reference, and after the position of the secondary beams 122 is adjusted to meet the requirements, the secondary beams 122 are fixedly spot-welded with the main beams 121 to ensure that all beam surfaces remain horizontal and consistent.

[0024] Preferably, the positioning sleeve plate 2 is made of a 10mm-thick steel plate, and during workshop manufacturing, the bolt holes of the positioning sleeve plate 2 need to be accurately positioned, and after positioning, a surveyor uses a total station instrument to recheck the positioning coordinates; then the center lines of the same batch of foundation bolts are led to the top surface of the positioning sleeve plate 2 to ensure that the longitudinal deviation of the center lines is ≤2mm, the full length is not greater than 2mm, and the unevenness of the two transverse center lines is ≤2mm.

[0025] Specifically, referring to Figure 3 As shown in the figure, the anchoring area positioning sleeve plate 21 includes a plurality of first positioning sleeve plates 211 and second positioning sleeve plates 212, the suspension area positioning sleeve plate 22 includes a third positioning sleeve plate 221 arranged on one side of the first positioning sleeve plate 211 and the second positioning sleeve plate 212 and a fourth positioning sleeve plate 222 and a fifth positioning sleeve plate 223 arranged on the other side of the first positioning sleeve plate 211 and the second positioning sleeve plate 212.

[0026] Specific to the embodiments of the application, the turbine base operating layer 5 is divided into an "anchoring area" and a "suspended area". In the anchoring area, a plurality of first positioning sleeve plates 211 are arranged at equal intervals in the longitudinal direction (turbine axis direction). Between the two rows of first positioning sleeve plates 211, second positioning sleeve plates 212 are inserted transversely to form a "chessboard type" grid. The hole positions of the first and second sleeve plates correspond to the theoretical center lines of the anchor bolt group and the anchor plate group respectively, realizing "rough positioning". A third positioning sleeve plate 221 is arranged on one side of the anchoring area (high-pressure cylinder side) for suspending the high-pressure inlet pipe embedded part. A fourth positioning sleeve plate 222 and a fifth positioning sleeve plate 223 are arranged on the other side of the anchoring area (low-pressure cylinder side) for suspending the low-pressure steam extraction pipe and drain embedded parts. The third, fourth, and fifth sleeve plates share the same elevation reference surface with the anchoring area sleeve plates, ensuring the spatial consistency of the cross-area embedded parts.

[0027] Each sleeve plate is independently adjustable by the embedded locking member 41 and the penetrating locking member 42. The anchoring area (first and second sleeve plates) is first roughly adjusted as a whole, and then the suspended area (third to fifth sleeve plates) is fine-adjusted based on it, avoiding error accumulation. The deviation cloud chart is automatically generated by software through one-time scanning of all sleeve plate hole position center coordinates by a total station, and the secondary fine adjustment is performed on the out-of-tolerance points by the locking device 4.

[0028] In this way, each embedded part is precisely positioned by multiple points and multiple directions through closed-loop control of the anchoring area and the suspended area. The sleeve plates of the anchoring area and the suspended area can be installed and adjusted simultaneously, improving installation precision and construction efficiency without increasing construction complexity.

[0029] Specifically, referring to Figure 7 As shown in the figure, the anchoring plate 3 includes a screw rod 31, a channel steel beam 32, an adjusting pad 33, and a nut 34. The screw rod 31 is vertically fixedly connected to both sides of the anchoring plate body. The channel steel beam 32 and the adjusting pad 33 are arranged on the screw rod 31. The nut 34 is threadedly connected to the top of the screw rod 31. The adjusting pad 33 is located directly above the channel steel beam 32, and the nut 34 is adapted to press on the upper surface of the adjusting pad 33.

[0030] In the embodiment, the anchoring plate 3 is suspended between two No. 18 channel steels by suspension fixing technology. Before the reinforcement is tied, two channel steel beams 32 are installed on the I-beam according to the lofting position of the anchoring plate 3, with the two side edges of the anchoring plate 3 as the reference lines, and the distance between the channel steel beams 32 is 40 mm. After confirmation, the channel steel beams 32 are welded on the I-beam made of 28b material, and the anchoring plate 3 is hoisted into position by a tower crane and temporarily suspended on the channel steel beams 32 by a sling and a hand-operated hoist. Then, the height and horizontal position of the anchoring plate 3 are adjusted by the sling or the hand-operated hoist, a φ30 mm screw rod 31 is passed from top to bottom in the middle of the distance between the channel steel beams 32, and after the position is determined, the screw rod 31 is welded on the top or the unprocessed side surface of the anchoring plate 3, with the length of the weld not less than 100 mm to ensure firmness.

[0031] According to the position of each screw rod 31, the center position is adjusted by using an adjusting pad 33 with a length of 100 mm, a width of 100 mm and a thickness of 10 mm, a 31 mm circular hole is formed in the center of the adjusting pad 33, the height of the anchoring plate 3 is adjusted by a nut 34, and after the requirements are met, the adjusting pad 33 is welded on the channel steel beam 32.

[0032] Preferably, for the anchoring plate 3 with a weight of more than 700 kg, during the installation process, according to the specific needs of the site construction, an ∠50×5 mm equal angle steel can be used as support on the formwork at the bottom of the anchoring plate 3. At the same time, the support channel steel should be spot welded to the reinforcement of the civil foundation to ensure the stability of the structure.

[0033] Specifically, please refer to Figure 10 As shown in the figure, the embedded locking piece 41 includes an embedded sleeve 411, a first anchor bolt 412, a first adjusting pad iron 413 and a first nut 414. The first anchor bolt 412 is threaded in the embedded sleeve 411, the first adjusting pad iron 413 is sleeved on the first anchor bolt 412 and located at the top end face of the embedded sleeve 411, the first nut 414 is threadedly connected at the top end of the first anchor bolt 412, the plug 415 is sleeved on the first anchor bolt 412 and located at the bottom end face of the embedded sleeve 411, and the reinforcement clamping 416 is clamped on the outer surface of the embedded sleeve 411; the other first nut 414 is also adapted to be threadedly connected on the first anchor bolt 412 and adapted to be pressed on the lower surface of the plug 415.

[0034] Specific to the present embodiment, the embedded sleeve 411 with the steel bar clamping 416 is vertically placed in the formwork, the steel bar clamping 416 is tied with the main reinforcement of the base, and the axis positioning of the embedded sleeve 411 is completed; the first anchor bolt 412 passes through the embedded sleeve 411, the bottom end of the first anchor bolt 412 is screwed into another first nut 414 and abuts against the plug 415, forming "bottom closed + pre-tension"; the first adjusting shims 413 and the first nuts 414 are sequentially sleeved at the top end of the embedded sleeve 411, and the first nut 414 at the upper end is rotated, the bolt drives the first adjusting shims 413 to rise and fall, and the height fine adjustment is realized through the thickness difference of the first adjusting shims 413; after leveling, the top elevation and the levelness of the embedded part are re-measured; after passing the inspection, the two first nuts 414 at the top and bottom are locked and locked, forming "double-nut anti-loose".

[0035] It needs to be specially pointed out that before the initial setting of the concrete, the nuts can be rechecked for loosening by using a wrench, and if necessary, they can be tightened again; after the final setting of the concrete, only the first nut 414 at the upper end and the first adjusting shims 413 need to be removed, and then the external formwork or the template frame can be removed.

[0036] Therefore, the embedded locking part 41 cooperates with the parts to upgrade the traditional "one-time embedded" anchor bolt to a "fine-tuning, reusable, high-load-bearing, and corrosion-resistant" precision anchoring node, which not only ensures the high-precision positioning of the steam turbine base embedded part, but also takes into account the construction efficiency and long-term maintainability, and becomes the key "precision-flow-turnover" three-in-one node in the entire fixing device.

[0037] Specifically, referring to Figure 11 As shown in the figure, the penetrating locking part 42 includes a penetrating sleeve 421, a wooden module 422, a first iron nail 423, a second adjusting shim 424, and a second steel bar clamping 425, the wooden module 422 is located at the inner bottom of the penetrating sleeve 421, the second adjusting shim 424 is sleeved on the top outer circumference of the penetrating sleeve 421, and the second steel bar clamping 425 is clamped on the outer circumference of the penetrating sleeve 421; the top of the penetrating sleeve 421 is provided on the first positioning sleeve plate 211 and the second positioning sleeve plate 212, and the bottom end of the penetrating sleeve 421 is located on the base formwork 51 of the steam turbine base operating layer 5; the wooden module 422 is suitable for being fixedly connected to the base formwork 51 by the first iron nail 423.

[0038] Specific to the embodiment, the second steel reinforcement clamp 425 is welded on the outer wall of the through sleeve 421 in the factory to form an anchoring claw, the wood module 422 is processed according to the inner diameter of the through sleeve 421, a bottom hole is reserved, the wood module 422 is placed on the inner bottom surface of the base template 51, and the wood module 422 is nailed to the template by the first iron nail 423 to realize the plane fixation and elevation reference of the bottom opening of the through sleeve 421. The through sleeve 421 passes through the wood module 422 from top to bottom until the bottom of the sleeve is attached to the base template 51. At this time, the wood module 422 is compressed and embedded in the sleeve to form an "elastic center plug". The second steel reinforcement clamp 425 on the outer wall of the through sleeve 421 is tied with the base reinforcement mesh to complete the axis limiting of the sleeve body and prevent tilting or floating during vibration.

[0039] The second adjusting iron 424 on the top of the through sleeve 421 is a square steel plate with a thickness of 10 mm and a side length of 20 mm longer than the outer diameter of the sleeve. A hole with a diameter of 1-2 mm larger than the diameter of the sleeve is formed in the center of the square steel plate. During installation, the center line of the hole coincides with the center line of the through sleeve 421. First, a wood module 422 with a thickness of 20 mm and the same inner diameter as the through sleeve 421 is made. Then, the center cross line of the through sleeve 421 is accurately determined on the bottom template, the center of the wood module 422 is aligned with the center of the through sleeve 421, and the wood module 422 is fixed on the beam bottom template with the first iron nail 423. The top of the through sleeve 421 passes through the positioning sleeve plate hole of the positioning sleeve plate 2. According to the site requirements, the iron pad is adjusted to correct the center position of the through sleeve 421. After the plane position, elevation and perpendicularity are corrected, the positioning sleeve plate 2 and the adjusting iron pad are spot-welded firmly.

[0040] To prevent any movement of the through sleeve 421 due to subsequent reinforcement binding and concrete pouring disturbance, the second steel reinforcement clamp 425 can be used to fix and limit the position of the through sleeve 421 in the middle.

[0041] Specifically, as shown in Figure 1 , 2 , the steel lattice column 11 and the main beam 121 and secondary beam 122 in the beam structure 12 are symmetrically arranged along the center line direction of the steam turbine generator on both sides.

[0042] Therefore, the "steel lattice column 11 + main beam 121 + secondary beam 122" is arranged as a mirror image with the center line of the steam turbine generator as the symmetry axis, upgrading the traditional single-side force frame to a "self-balancing symmetric system". Precision superposition, efficiency superposition, and cost superposition effects are simultaneously generated in the four stages of measurement, installation, stress, and removal, which is the core spatial logic of the entire fixing device capable of "one-time forming, no correction, and high turnover".

[0043] Specifically, as shown in Figure 4 , 5As shown, the steel lattice column 11 comprises three vertically and parallel arranged lattice column limbs 111 and connecting strips 112 between any two adjacent lattice column limbs 111; the bottom end of the lattice column limb 111 is fixedly connected to the base template 51 of the turbine base operation layer 5 through a steel head 113; and the top end of the lattice column limb 111 is adjusted to be at the same elevation state through a first embedded part 1111.

[0044] The cross-sectional side length of the steel lattice column 11 is 198-202 mm, and the lattice column limb 111 and the connecting strip 112 are both made of C32 steel.

[0045] As a preferred mode of the embodiment, the steel lattice column 11 is welded from steel waste, the length of the steel lattice column 11 is 3.8 m and 3.5 m, and each has two; the cross section of the steel lattice column 11 is a three-limb structure, the lattice column limb 111 and the connecting strip 112 are both made of C32 steel, the net distance between the connecting strips 112 is 380 mm and 350 mm respectively, the cross-sectional side length of the steel lattice column 11 is 200 mm, after the steel lattice column 11 is made, a lifting point is made in advance in the workshop to facilitate hoisting operation; then the steel lattice column 11 is hoisted into place by using the on-site tower crane, and the positioning size, levelness and perpendicularity thereof are adjusted; after the adjustment is completed, the steel lattice column 11 is spot-welded with the pre-embedded steel head 113, after the verticality of the lattice column limb 111 is checked and confirmed to meet the requirements, the final welding positioning is performed, and the positioning installation of the column is completed.

[0046] In addition, a first embedded part 1111 with a size of 210 mm x 130 mm x 10 mm is welded at the top end of the steel lattice column 11, the elevation control is performed through the anchor claw of the first embedded part 1111, and the top end of the column is ensured to be at the same elevation, so as to facilitate the installation of the main beam 121.

[0047] As a preferred mode of the embodiment, the main beam 121, the secondary beam 122 and the support beam 123 are all I-beam.

[0048] The embodiment of the application further provides an installation method of the turbine pre-embedded part fixing device. S1: install the sample frame 1; a plurality of steel lattice columns 11 are arranged on the periphery of the base template 51 of the turbine base operation layer 5 according to the installation position of the base template 51, for supporting and fixing the beam structure 12; the main beam 121, the secondary beam 122 and the support beam 123 are respectively erected in the horizontal plane where the upper end surface of the steel lattice column 11 is located, along the transverse direction and the longitudinal direction, and are fixedly connected with the steel lattice column 11 to form an integral frame; the main beam 121 and the secondary beam 122 pass above the pre-embedded part fixing position; Wherein, the upper end surface of the fixed steel lattice column 11 is located in the same horizontal plane and is higher than the upper surface of the equipment base concrete platform formed after the completion of the concrete pouring operation; S2: install the positioning sleeve plate 2; the anchor area positioning sleeve plate 21 is hoisted to the specified installation position by the tower crane, and is adjusted in place by the help of the hand-operated hoist and workers; the positioning sleeve plate of the suspension area positioning sleeve plate is hoisted to above the base by the tower crane, and the top surface of the positioning sleeve plate is fixed and aligned with the mark on the base support angle steel (∠50×5); S3: install the anchor plate 3; the anchor plate 3 is suspended between the two channel steels by using the suspension fixing technology; S4: install the locking device 4; the embedded part is fixed and installed according to the positioning requirements of the embedded locking part 41 and the penetrating locking part 42 respectively; S5: pour concrete; the position change of the embedded part is tracked and measured by the total station; if the position deviation of the embedded part exceeds the design requirement, the position of the embedded part is corrected by the locking device 4; S6: remove the fixing device; when the concrete pouring is completed and the position re-measurement of the embedded part meets the standard, the fixing device exposed outside the concrete is removed, and the sample plate frame 1 is recycled.

[0049] The installation method realizes the system-level optimization in the four dimensions of precision, efficiency, cost and environmental protection by changing the traditional linear process of “pouring first, measuring second and then reworking” into the parallel process of “parallel installation, real-time correction and one-time optimization” through the closed-loop process of “high-rigid frame → modular sleeve plate → adjustable locking → dynamic tracking → overall recycling”, and is the core process support for the industrialization and standardization application of the whole steam turbine embedded part fixing device.

[0050] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited to this. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will fall within the protection scope of the present disclosure.

Claims

1. A steam turbine embedded part fixing device, characterized in that, include: The template frame (1) includes several steel lattice columns (11) that are vertically fixed to the turbine base operating layer (5), a beam structure (12) that is horizontally fixed to the top of the steel lattice columns (11), and a steel beam (13). The beam structure (12) includes multiple main beams (121), secondary beams (122), and support beams (123), and the main beams (121), secondary beams (122), and support beams (123) are fixedly connected to each other to form an integral frame. The positioning sleeve (2) includes the anchoring area positioning sleeve (21) and the suspension area positioning sleeve (22). Anchor plate (3) is vertically installed on the inner wall of the turbine base operating layer (5); The locking device (4) includes an embedded locking member (41) and a through locking member (42). The embedded locking member (41) and the through locking member (42) are fixedly connected to the template frame (1) and the positioning sleeve (2) respectively, and are used to adjust the relative positional relationship between the embedded part and the template frame (1). The template frame (1) is suitable for recycling and reuse.

2. The turbine embedded part fixing device according to claim 1, characterized in that, The anchoring area positioning sleeve (21) includes a plurality of first positioning sleeves (211) and second positioning sleeves (212), and the suspension area positioning sleeve (22) includes a third positioning sleeve (221) disposed on one side of the first positioning sleeve (211) and the second positioning sleeve (212), and a fourth positioning sleeve (222) and a fifth positioning sleeve (223) disposed on the other side of the first positioning sleeve (211) and the second positioning sleeve (212).

3. The turbine embedded part fixing device according to claim 1, characterized in that, The anchor plate (3) includes a screw (31) vertically fixedly connected to both sides of the anchor plate body, a channel steel beam (32) and an adjusting pad (33) passing through the screw (31), and a nut (34) threadedly connected to the top of the screw (31). The adjusting pad (33) is located directly above the channel steel beam (32), and the nut (34) is adapted to press against the upper surface of the adjusting pad (33).

4. The turbine embedded part fixing device according to claim 1, characterized in that, The embedded locking member (41) includes an embedded sleeve (411), a first anchor bolt (412) passing through the embedded sleeve (411), a first adjusting shim (413) sleeved on the first anchor bolt (412) and located on the top surface of the embedded sleeve (411), a first nut (414) threaded to the top of the first anchor bolt (412), a plug (415) sleeved on the first anchor bolt (412) and located on the bottom surface of the embedded sleeve (411), and a steel bar clamp (416) snapped onto the outer surface of the embedded sleeve (411); another first nut (414) is also adapted to be threaded to the first anchor bolt (412) and adapted to press against the lower surface of the plug (415).

5. The turbine embedded part fixing device according to claim 2, characterized in that, The through-type locking member (42) includes a through-type sleeve (421), a wooden module (422) located at the bottom of the through-type sleeve (421), a first iron nail (423), a second adjusting shim (424) sleeved on the outer circumference of the top of the through-type sleeve (421), and a second steel bar clamp (425) snapped onto the outer circumference of the through-type sleeve (421); the top of the through-type sleeve (421) passes through the first positioning sleeve plate (211) and the second positioning sleeve plate (212), and the bottom end of the through-type sleeve (421) is located on the base template (51) of the turbine base operating layer (5); the wooden module (422) is adapted to be fixedly connected to the base template (51) by the first iron nail (423).

6. The turbine embedded part fixing device according to claim 5, characterized in that, The reinforced lattice column (11) and the main beam (121) and secondary beam (122) in the beam structure (12) are symmetrically arranged on both sides along the centerline direction of the steam turbine generator.

7. The turbine embedded part fixing device according to claim 6, characterized in that, The steel lattice column (11) includes three vertically parallel lattice column branches (111) and a tie strip (112) connecting any two adjacent lattice column branches (111); the bottom end of the lattice column branch (111) is fixedly connected to the base template (51) of the turbine base operating layer (5) by a steel bar head (113); the top end of the lattice column branch (111) is adjusted to be at the same elevation by the first embedded part (1111).

8. The turbine embedded part fixing device according to claim 7, characterized in that, The cross-sectional side length of the steel lattice column (11) is 198-202mm, and the lattice column limbs (111) and the tie bars (112) are both made of C32 steel bars.

9. The turbine embedded part fixing device according to claim 1, characterized in that, The main beam (121), the secondary beam (122), and the support beam (123) are all I-beams.

10. An installation method for a turbine embedded part fixing device according to any one of claims 1-9, characterized in that, Includes the following steps: S1: Install template frame (1); According to the installation position of the base template (51) of the turbine base operating layer (5), set multiple steel lattice columns (11) around the base template (51) to support and fix the beam structure (12); In the horizontal plane where the upper end face of the steel lattice column (11) is located, erect the main beam (121), secondary beam (122) and support beam (123) in the transverse and longitudinal directions respectively, and fix them to the steel lattice column (11) to form an integral frame; The main beam (121) and secondary beam (122) pass through the area above the fixed position of the embedded part; The upper surface of the steel lattice column (11) after it is fixed is located on the same horizontal plane and is higher than the upper surface of the equipment base concrete platform formed after the concrete pouring operation is completed. S2: Install positioning sleeve (2); hoist the anchoring area positioning sleeve (21) to the designated installation position using a tower crane, and adjust it in place with the help of a hand hoist and workers; hoist the positioning sleeve of the suspended area positioning sleeve to the top of the base using a tower crane, and precisely align and fix the top surface of the positioning sleeve with the mark on the base support angle steel (∠50×5); S3: Install anchor plate (3); use suspension fixing technology to suspend anchor plate (3) between two channel steels; S4: Install locking devices (4); fix the embedded parts according to the positioning requirements of embedded locking parts (41) and through locking parts (42); S5: Pour concrete; track and measure the position change of the embedded parts using a total station; if the position deviation of the embedded parts exceeds the design requirements, correct the position of the embedded parts using the locking device (4); S6: Remove the fixing device; After the concrete is poured and the position of the embedded parts is re-measured and meets the standards, remove the fixing device exposed outside the concrete and retrieve the template frame (1).

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