CN117514374A - Rotating partition plate corner control device of steam turbine - Google Patents
Rotating partition plate corner control device of steam turbine Download PDFInfo
- Publication number
- CN117514374A CN117514374A CN202311681476.1A CN202311681476A CN117514374A CN 117514374 A CN117514374 A CN 117514374A CN 202311681476 A CN202311681476 A CN 202311681476A CN 117514374 A CN117514374 A CN 117514374A
- Authority
- CN
- China
- Prior art keywords
- spline shaft
- connecting rod
- shell
- spline
- cooler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005192 partition Methods 0.000 title claims abstract description 54
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 238000001816 cooling Methods 0.000 claims description 33
- 239000010425 asbestos Substances 0.000 claims description 15
- 229910052895 riebeckite Inorganic materials 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000012856 packing Methods 0.000 claims description 10
- 210000004907 gland Anatomy 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 9
- 230000033001 locomotion Effects 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 14
- 230000007774 longterm Effects 0.000 abstract description 11
- 230000032683 aging Effects 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 239000000498 cooling water Substances 0.000 description 21
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005121 nitriding Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
- F01D17/12—Final actuators arranged in stator parts
- F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
- F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
- F01D17/145—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path by means of valves, e.g. for steam turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/003—Arrangements for testing or measuring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/14—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for responsive to other specific conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
Abstract
The invention discloses a rotating partition board corner control device of a steam turbine, which effectively prevents high temperature on the surface of a cylinder from being conducted to a servomotor, thoroughly solves the oil leakage phenomenon of a sealing element on the rotating partition board servomotor caused by long-term high-temperature aging, ensures the reliability and strength of connection, has good tightness, thereby effectively preventing steam from leaking through a spline shaft, and thoroughly solves the oil leakage phenomenon of the sealing element of the servomotor caused by long-term high-temperature aging; the transmission structure design of the rotating partition plate rotating angle control device of the steam turbine adopts a simple and reliable revolute pair mechanism with one degree of freedom, has excellent universality and reproducibility, and is suitable for rotating angle control of various steam turbine rotating partition plates.
Description
Technical Field
The invention belongs to the technical field of steam turbines, and particularly relates to a rotating partition plate corner control device of a steam turbine.
Background
The rotating diaphragm of the steam turbine is a key component for controlling the steam flow. The device can control the flow direction and the flow rate of the steam in the steam turbine, and can change the flow direction of the steam according to requirements under different conditions, so that the load of the steam turbine can be reasonably distributed, the high-efficiency operation of a unit is ensured, and the service life of the steam turbine can be prolonged.
The rotating partition plate of the steam turbine is divided into a static blade and a dynamic blade. The stationary blades are mounted on the turbine casing and the dynamic blades are mounted on the turbine rotating parts. The diaphragm can control the flow of steam between the stationary blades and the dynamic blades, thereby achieving control of the flow and direction of the steam, which enters the turbine through the first stage of the impeller when the turbine is in operation. After the steam passes through the first stage impeller, both the steam pressure and temperature are reduced. At this point, steam enters the impeller of the second stage and then enters the rotating partition where it passes over the dynamic vanes, changing the flow direction and flow rate of the steam if it is desired to adjust the flow or direction. The rotary partition plate can change the air inlet condition of the next-stage impeller according to the requirement, thereby realizing the control of the flow of the steam turbine.
The rotating partition plate corner control device for most of the existing steam extraction turbines has the defects of complex structure, high failure rate of the device, inconvenient field installation, debugging and overhaul and the like; and the temperature of the whole rotating partition plate corner control device of the steam turbine is high, so that the sealing element in the rotating partition plate oil motor is easy to age and leak oil and the like.
Therefore, the development of the rotating partition plate corner control device of the steam turbine with the efficient heat exchange protection device is imperative, and the rotating partition plate corner control device is relatively simple in structure and low in device failure rate.
Disclosure of Invention
The invention aims to provide the rotating partition board corner control device of the steam turbine with the high-efficiency heat exchange protection device, which has the advantages of simple structure and low failure rate, effectively prevents high temperature on the surface of a cylinder from being conducted to a servomotor, thoroughly solves the oil leakage phenomenon of a sealing element on the rotating partition board servomotor caused by long-term high-temperature aging, ensures the reliability and strength of connection, and has good sealing performance, thereby effectively preventing steam from leaking through a spline shaft.
In order to achieve the above object, the present invention has the following technical scheme:
the rotating partition board corner control device of the steam turbine comprises a hydraulic motor and a rotating partition board, wherein the hydraulic motor is connected to the lower half side wall of an outer cylinder of the steam turbine through a connecting bracket, the hydraulic motor comprises a piston rod, a hydraulic motor horizontal connecting rod and a guide rod, the top end of the piston rod is provided with threads, a through hole is formed in the middle of the hydraulic motor horizontal connecting rod, the piston rod penetrates through the through hole of the hydraulic motor horizontal connecting rod and is vertically connected with the hydraulic motor horizontal connecting rod, the threads at the top end of the piston rod are connected with the guide rod, and the guide rod guides the piston rod; square holes are respectively arranged at two ends of the horizontal connecting rod of the oil motor, each square hole is respectively connected with a Y-shaped connecting rod, the top ends of the two Y-shaped connecting rods are hinged with the horizontal connecting rod of the oil motor, the bottom ends of the two Y-shaped connecting rods are respectively hinged with one end of a U-shaped connecting rod, the other end of the U-shaped connecting rod is fixedly connected with a spline shaft rotating mechanism, the spline shaft rotating mechanism is fixedly connected with one end of a spline shaft connecting rod through spline fit, the other end of the spline shaft connecting rod is hinged with one end of a rotating partition plate connecting rod, the other end of the rotating partition plate connecting rod is hinged with a rotating partition plate, the spline shaft rotating mechanism is connected with the spline shaft connecting rod and the U-shaped connecting rod respectively to form a member without relative movement relation, and a cooler is arranged on the connecting support.
Further, the cooler includes cooling device, cooler shell, cooler water inlet port and cooler water outlet port, cooling device is for having the rectangle integral type structure that multilayer ripple runner board fixed connection becomes, the cooler shell is the sealed rectangle shell of cavity, cooling device sets up in the cooler shell, and cooling device's lateral surface and cooler shell's medial surface subsides and fixed connection, cooler water inlet port sets up the lower part position in shell one side, cooler water outlet port sets up the upper position at the shell opposite side, all design a through-hole on every layer of ripple runner board of cooler, the through-hole sets up near shell position on ripple runner board length direction, and the through-hole dislocation set about on the adjacent ripple runner board. The cooler ensures that cooling water flows from the cooling water inlet pipeline to the outer side of the corrugated flow passage plate close to the cooling water inlet position to flow through the two sides of each corrugated flow passage plate sequentially up and down, finally reaches the outer side of the corrugated flow passage plate close to the cooling water outlet position, flows out through the cooling water outlet pipeline, and the corrugated flow passage on each corrugated flow passage plate in the cooling plate adopts an optimized pressure drop design and a turbulence enhancement design, so that the cooling efficiency is improved. The cooling device ensures that the optimal cooling capacity is provided when the cooling area and the cooling water filling quantity are limited, and the cooling water outlet pipe joint is connected with the cooling system to cool the rotating partition plate oil motor connecting support through the cooling water inlet pipe joint, so that the high temperature conduction of the surface of the cylinder to the oil motor is effectively prevented, and the oil leakage phenomenon of a sealing element on the rotating partition plate oil motor caused by long-term high temperature aging is thoroughly solved.
Further, the corrugated flow channel plate and the shell are made of high-strength stainless steel materials.
Furthermore, the upper end and the lower end of the Y-shaped connecting rod are respectively connected with the horizontal connecting rod and the U-shaped connecting rod of the oil motor through the pin shaft and the centripetal joint bearing.
Further, the spline shaft rotating mechanism comprises a spline shaft shell and a spline shaft, the spline shaft shell is fixedly connected to the lower half side wall of the outer cylinder of the steam turbine, the installation surface of the spline shaft shell is tightly matched with the lower half side wall of the outer cylinder of the steam turbine, the left end and the right end of the spline shaft shell are of a through structure, the spline shaft is installed inside the spline shaft shell in a penetrating mode, the spline shaft comprises a threaded section, a spline section and an optical axis section, an external spline is arranged on the spline section, one end of the spline shaft shell is sealed through a gland and a sealing gasket, the other end of the spline shaft shell is thermally insulated and sealed through a sliding bearing, a rubber asbestos packing and a pressing ring which are in axial sealing function, the optical axis section of the spline shaft penetrates through the sliding bearing, and then the external spline on the spline section is connected with an internal spline on a spline shaft connecting rod in a matching mode, and the spline shaft is in threaded connection with the spline shaft shell on the side of a near gland side, so that the spline shaft is axially fixed and the spline shaft shell is sealed.
Further, the sleeve is fixed to the slide bearing by a screw, and the rubber asbestos packing and the pressing ring are fixed to the slide bearing by a screw.
Furthermore, an adjusting backing ring for adjusting the axial clearance between the inner wall of the spline shaft shell and the side surface of the spline shaft connecting rod is also arranged on the spline shaft.
Further, the light Duan Zhou of the spline shaft is thermally insulated and sealed through the sleeve and the rubber asbestos washer, and the spline shaft is fixed with the sleeve through the washer and the nut.
Further, nitriding treatment is carried out on the inner surfaces of the sleeve and the sliding bearing and the optical section shafts at the two sides of the spline shaft, and finish grinding processing is carried out, so that not only is the clearance fit precision ensured, but also the long-term wear resistance is ensured.
Furthermore, the sleeve and the sliding bearing are in transition fit with the inner surface of the spline shaft shell, so that good concentricity and fit tightness are ensured.
Further, radial exhaust holes are respectively formed in the gland and the spline shaft shell, the radial exhaust holes in the spline shaft shell are arranged at positions corresponding to the sliding bearings, and a drain steam exhaust pipe joint is arranged at the radial steam exhaust holes and used for timely draining steam when abnormal steam leakage exists in the spline shaft rotating mechanism.
Further, an end cover for protecting the spline shaft is arranged on the end face of the broken side of the optical axis of the spline shaft.
Ensuring that the rotating barrier is in the fully closed position and the rotating barrier oil motor piston rod is in the fully retracted position; according to the angle required to rotate by the rotating partition plate, the angle required to rotate by the spline shaft can be calculated through the movement length sizes of the rotating partition plate connecting rod and the spline shaft connecting rod; when the oil motor is in the zero position, the included angle between the central line of the U-shaped connecting rod and the horizontal line is below the horizontal line, and the angle is half of the angle of the spline shaft which needs to rotate.
By adopting the technical scheme, the invention has the beneficial technical effects that:
1. in the invention, the rotary baffle oil motor is arranged on the oil motor connecting bracket and is not in direct contact with the cylinder, thereby reducing the adverse effect of high temperature radiated by the surface of the cylinder on the sealing element and the oil liquid of the oil motor; the cooler is arranged on the connecting support of the oil motor, and the cooler adopts an optimized pressure drop design and a turbulence enhancement design to improve the cooling efficiency. The cooling device ensures that the optimal cooling capacity is provided when the cooling area and the cooling water filling quantity are limited, and the cooling water outlet pipe joint is connected with the cooling system to cool the rotating partition plate oil motor connecting support through the cooling water inlet pipe joint, so that the high temperature conduction of the surface of the cylinder to the oil motor is effectively prevented, and the oil leakage phenomenon of a sealing element on the rotating partition plate oil motor caused by long-term high temperature aging is thoroughly solved.
2. In the invention, the spline shaft rotating mechanism has excellent sealing performance structurally, the spline shaft connecting rod and the U-shaped connecting rod are connected with the spline shaft in the spline shaft rotating mechanism to form a moving component, the spline shaft and the spline shaft shell are matched with the sleeve and the sliding bearing in precise shaft diameter in design to ensure long-term sealing performance and wear resistance, and the two ends of the spline shaft shell are reliably sealed with the outside through the gland, the sealing gasket, the rubber asbestos packing, the pressing ring and the screw plug, so that trace high-temperature steam possibly leaked out through a gap of the spline shaft diameter is thoroughly isolated from the normal-temperature environment, and the steam is timely discharged through the drain pipe joint, thereby ensuring the reliability and strength of connection and having good sealing performance, and effectively preventing the steam from leaking through the spline shaft.
3. According to the invention, the whole turbine rotating partition plate executing mechanism has a simple design structure, and the angle beta of the spline shaft connecting rod required to rotate can be drawn by using a geometric drawing method according to the angle alpha required to rotate by the rotating partition plate; and then the thickness of the registration adjusting sleeve is used for enabling the included angle between the U-shaped connecting rod and the horizontal line to be beta/2 below the horizontal line when the piston rod of the rotating baffle oil motor is completely retracted, enabling the included angle between the U-shaped connecting rod and the horizontal line to be beta/2 above the horizontal line when the piston rod of the rotating baffle oil motor is completely extended, and finally measuring the vertical distance between the centers of the hinge holes of the U-shaped connecting rod and the Y-shaped connecting rod, which are matched with each other, at two limit positions when the U-shaped connecting rod rotates by taking the spline axle center as the center rotation angle beta on a geometric figure. The distance is the working stroke of the rotary baffle oil motor. And then the U-shaped connecting rod is connected and fixed with the spline shaft, and finally, when the rotating partition plate oil motor drives the U-shaped connecting rod to swing by an angle beta with a constant amplitude up and down by taking a horizontal line as a center, the purpose of controlling the rotating angle alpha of the rotating partition plate is achieved.
4. In the invention, a simple and reliable revolute pair mechanism with one degree of freedom is adopted in the transmission structure design of the rotating partition plate rotating angle control device of the steam turbine, so that the rotating pair mechanism has excellent universality and replicability and is suitable for rotating angle control of various steam turbine rotating partition plates.
Drawings
FIG. 1 is a schematic view of a rotating diaphragm angle control apparatus for a steam turbine according to the present invention.
FIG. 2 is a top view of the rotating diaphragm angle control apparatus of the steam turbine of the present invention.
FIG. 3 is a cross-sectional view of a rotating diaphragm angle control apparatus of a steam turbine according to the present invention.
Fig. 4 is a structural view of the spline shaft rotation mechanism of the present invention.
Fig. 5 is a cross-sectional view of a spline shaft rotation mechanism of the present invention.
FIG. 6 is a schematic diagram of the movement of the rotating diaphragm angle control apparatus of the steam turbine of the present invention.
Fig. 7 is a schematic diagram of the cooler structure of the present invention.
1, rotating a baffle connecting rod; 2. a spline shaft connecting rod; 3. a spline shaft rotation mechanism; 4. a U-shaped connecting rod; 5. a Y-shaped connecting rod; 6. a prime mover; 7. a horizontal link of the oil motor; 8. a connecting bracket; 9. a guide rod; 10. a cooler; 11. a water outlet interface of the cooler; 12. a water inlet port of the cooler; 13 radial spherical plain bearing; 14. rotating the partition; 3.1, a spline shaft housing; 3.2, a hydrophobic steam exhaust pipe joint; 3.3, capping; 3.4, sliding bearings; 3.5, rubber asbestos packing; 3.7, a pressing ring; 3.8, spline shaft; 3.9, end caps; 3.10, adjusting the backing ring; 3.11, sleeve; and 3.12, rubber asbestos gasket.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
It should be noted that the structures, proportions, sizes and the like illustrated in the present specification are used for being understood and read by those skilled in the art in combination with the disclosure of the present invention, and are not intended to limit the applicable limitations of the present invention, and any structural modifications, proportional changes or size adjustments should fall within the scope of the disclosure of the present invention without affecting the efficacy and achievement of the present invention.
Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
Example 1
As shown in fig. 1-3, the embodiment provides a rotating partition board corner control device of a steam turbine, which comprises a servomotor 6 and a rotating partition board 14, wherein the servomotor is connected to the lower half side wall of an outer cylinder of the steam turbine through a connecting bracket 8, the servomotor comprises a piston rod, a servomotor horizontal connecting rod 7 and a guide rod 9, the top end of the piston rod is provided with threads, a through hole is formed in the middle of the servomotor horizontal connecting rod 7, the piston rod passes through the through hole of the servomotor horizontal connecting rod 7 and is vertically connected with the servomotor horizontal connecting rod 7, the threads at the top end of the piston rod are connected with the guide rod 9, and the guide rod 9 guides the piston rod; the two ends of the horizontal connecting rod 7 of the oil motor are respectively provided with square holes, each square hole is respectively connected with a Y-shaped connecting rod 5, the top ends of the two Y-shaped connecting rods 5 are hinged with the horizontal connecting rod 7 of the oil motor, the bottom ends of the two Y-shaped connecting rods 5 are respectively hinged with one end of the U-shaped connecting rod 4, the other end of the U-shaped connecting rod 4 is fixedly connected with the spline shaft rotating mechanism 3, the spline shaft rotating mechanism 3 is fixedly connected with one end of the spline shaft connecting rod 2 through spline fit, the other end of the spline shaft connecting rod 2 is hinged with one end of the rotating partition plate connecting rod 1, the other end of the rotating partition plate connecting rod 1 is hinged with the rotating partition plate, the spline shaft rotating mechanism 3 is respectively connected with the spline shaft connecting rod 2 and the U-shaped connecting rod 4 to form a member without relative motion relation, and the cooler 10 is arranged on the connecting support 8.
As shown in fig. 7, the cooler 10 includes a cooling device, a cooler housing, a cooler water inlet port 12 and a cooler water outlet port 11, where the cooling device is a rectangular integral structure formed by fixedly connecting multiple layers of corrugated flow channel plates, the cooler housing is a hollow sealed rectangular housing, the cooling device is disposed in the cooler housing, the outer side of the cooling device is attached to and fixedly connected with the inner side of the cooler housing, the cooler water inlet port 12 is disposed at a lower position of one side of the housing, the cooler water outlet port 11 is disposed at an upper position of the other side of the housing, through holes are formed in each layer of corrugated flow channel plates of the cooler 10 and are disposed at positions near the housing in the length direction of the corrugated flow channel plates, and the through holes on adjacent corrugated flow channel plates are disposed in an up-down staggered manner. The cooler 10 ensures that cooling water flows from the cooling water inlet pipeline to the outer side of the corrugated flow channel plates close to the cooling water inlet position, flows through the two sides of each corrugated flow channel plate up and down in sequence, finally reaches the outer side of the corrugated flow channel plate close to the cooling water outlet position, flows out through the cooling water outlet pipeline, and the corrugated flow channel on each corrugated flow channel plate in the cooling plate adopts an optimized pressure drop design and a turbulence enhancement design, so that the cooling efficiency is improved. The cooling device has the advantages that the optimal cooling capacity is guaranteed when the cooling area and the cooling water filling quantity are limited, the cooling water inlet pipe joint is used for connecting the cooling system with the cooling water outlet pipe joint to cool the rotating partition plate oil motor connecting support 8, so that high temperature conduction of the surface of a cylinder to the oil motor is effectively prevented, the oil leakage phenomenon of a sealing element on the rotating partition plate oil motor caused by long-term high-temperature aging is thoroughly solved, the corrugated flow passage plate and the shell are made of high-strength stainless steel materials, and the upper end and the lower end of the Y-shaped connecting rod 5 are respectively connected with the oil motor horizontal connecting rod 7 and the U-shaped connecting rod 4 through pin shafts and the centripetal joint bearings 13.
In this embodiment, the rotating diaphragm oil mover 6 is mounted on the connecting bracket 8 and is not in direct contact with the cylinder, thereby reducing the adverse effect of the high temperature radiated from the cylinder surface on the seals and oil on the rotating diaphragm oil mover 6; the connecting bracket 8 is provided with a cooler 10, and the cooler 10 adopts an optimized pressure drop design and a turbulence enhancement design to improve the cooling efficiency. The optimal cooling capacity is ensured when the limited cooling area and the cooling water filling amount are ensured, the cooling water inlet pipe joint is connected with the cooling system to cool the connecting bracket 8, so that the high temperature conduction of the cylinder surface to the position of the oil motor 6 is effectively prevented, and the oil leakage phenomenon of a sealing element on the rotating partition plate oil motor 6 caused by long-term high-temperature aging is thoroughly solved;
as shown in fig. 6, the transmission process of the rotating diaphragm actuator force of the present invention is: the control oil pressure pushes the piston rod of the oil motor 6, the piston rod pushes the oil motor horizontal connecting rod 7 vertical to the piston rod, the oil motor horizontal connecting rod 7 drives the Y-shaped connecting rod 5, the Y-shaped connecting rod 5 drives the U-shaped connecting rod 4 to rotate, and the U-shaped connecting rod 4, the spline shaft 3.8 and the spline shaft connecting rod 2 are rigidly connected through spline fit because the U-shaped connecting rod 4 is fixedly connected with the spline shaft 3.8, so the U-shaped connecting rod 4, the spline shaft 3.8 and the spline shaft connecting rod 2 can be regarded as a moving member; therefore, when the horizontal connecting rod 7 of the oil motor drives the Y-shaped connecting rod 5, the U-shaped connecting rod 4, the spline shaft rotating mechanism 3 and the spline shaft connecting rod 2 can be regarded as a lever to rotate around the spline shaft 3.8 so as to drive the rotating partition plate connecting rod 1 to rotate, and finally, the purpose that the rotating partition plate connecting rod 1 rotates to drive the rotating partition plate 14 to rotate is realized.
In this embodiment, because the rotation center of the rotating partition plate and the rotation center of the spline shaft are fixed, the angle β of the spline shaft connecting rod 2 to be rotated can be drawn by using a geometric drawing method according to the angle α of the rotating partition plate 14 to be rotated; the included angle between the U-shaped connecting rod 4 and the horizontal line is beta/2 below the horizontal line when the piston rod of the rotating baffle oil motor 6 is fully retracted, the included angle between the U-shaped connecting rod 4 and the horizontal line is beta/2 above the horizontal line when the piston rod of the rotating baffle oil motor 6 is fully extended, and finally, the vertical distance between the centers of the hinge holes of the U-shaped connecting rod 4 and the Y-shaped connecting rod 5, which are matched with each other, at two limit positions when the U-shaped connecting rod 4 rotates by taking the spline shaft 3.8 as the center rotation angle beta can be measured on a geometric figure; the distance is the working stroke of the rotary baffle oil motor 6; and then the U-shaped connecting rod 4 is fixedly connected with the spline shaft 3.8, and finally, when the rotating partition plate oil motor 6 drives the U-shaped connecting rod 4 to swing by an angle beta with a constant amplitude up and down by taking a horizontal line as a center, the purpose of controlling the rotating angle alpha of the rotating partition plate 14 is achieved.
Example 2
Compared with the embodiment 1, the embodiment provides a rotating partition plate rotating angle control device of a steam turbine, which is different in that, as shown in fig. 4 and 5, the spline shaft rotating mechanism 3 comprises a spline shaft shell 3.1 and a spline shaft 3.8, the spline shaft shell 3.1 is fixedly connected to the lower half side wall of a steam turbine outer cylinder, the installation surface of the spline shaft shell 3.1 is tightly matched with the lower half side wall of the steam turbine outer cylinder, the left end and the right end of the spline shaft shell 3.1 are of a through structure, the spline shaft 3.8 is installed inside the spline shaft shell 3.1 in a penetrating manner, the spline shaft 3.8 comprises a threaded section, a spline section and an optical axis section, an external spline is arranged on the spline section, one end of the spline shaft shell 3.1 is in sealing with a sealing gasket through a gland 3.3, the other end of the spline shaft shell 3.8 is in shaft diameter matching relationship with the spline shaft shell 3.1 through a sliding bearing 3.4, a rubber asbestos packing 3.5 playing an axial sealing role and a sealing role, the spline shaft 3.8 is in the axial direction of the sliding shaft 3.4 is in close axial direction of the spline section of the spline shaft shell 3.1, and the spline section is in sealing role of the spline section is in the axial direction of the spline shaft 3.1 through the shaft 3.4; the shaft sleeve is fixed on the sliding bearing 3.4 through screws and is fixed on the spline shaft shell 3.1 through screws, and the rubber asbestos packing 3.5 and the pressing ring 3.7 are fixed on the sliding bearing 3.4 through bolts; an adjusting backing ring 3.10 for adjusting the axial clearance between the inner wall of the spline shaft shell 3.1 and the side surface of the spline shaft connecting rod 2 is also arranged on the spline shaft 3.8; the shaft sleeve is fixed on the sliding bearing 3.4 through screws and is fixed on the spline shaft shell 3.1 through screws, and the rubber asbestos packing 3.5 and the pressing ring 3.7 are fixed on the sliding bearing 3.4 through bolts; an adjusting backing ring 3.10 for adjusting the axial clearance between the inner wall of the spline shaft shell 3.1 and the side surface of the spline shaft connecting rod 2 is also arranged on the spline shaft 3.8; the light Duan Zhou of the spline shaft is insulated and sealed through the sleeve 3.11 and the rubber asbestos gasket 3.12, and the spline shaft is fixed with the sleeve 3.11 through the gasket and the nut; nitriding treatment is carried out on the inner surfaces of the sleeve 3.11 and the sliding bearing 3.4 and the optical section shafts at the two sides of the spline shaft, and finish grinding is carried out, so that not only is the clearance fit precision ensured, but also the long-term wear resistance is ensured; the sleeve 3.11 and the outer cylindrical surface of the sliding bearing 3.4 are in transition fit with the inner surface of the spline shaft shell 3.1, so that good concentricity and good fit tightness are ensured; radial exhaust holes are respectively formed in the gland 3.3 and the spline shaft shell 3.1, the radial exhaust holes in the spline shaft shell 3.1 are arranged at positions corresponding to the sliding bearings 3.4, and a drain steam pipe joint 3.2 is arranged at the radial exhaust holes and used for draining steam in time when abnormal steam leakage exists in the spline shaft rotating mechanism 3; an end cover 3.9 for protecting the spline shaft 3.8 is arranged on the end face of the optical axis broken side of the spline shaft 3.8.
In this embodiment, the spline shaft rotating mechanism 3 has excellent sealing performance in terms of structure, the spline shaft connecting rod 2 and the U-shaped connecting rod 4 are connected with the spline shaft in the spline shaft rotating mechanism 3 to form a moving member, and the spline shaft 3.8 and the spline shaft housing 3.1 are matched with the sleeve 3.11 and the sliding bearing 3.4 in terms of design to ensure long-term sealing performance and wear resistance. The two ends of the spline shaft shell 3.1 are reliably sealed with the outside through the gland 3.3, the sealing gasket, the rubber asbestos gasket 3.12, the rubber asbestos packing 3.5, the pressing ring 3.7 and the screw plug, so that trace high-temperature steam possibly leaked out through a shaft diameter gap of the spline shaft 3.8 is thoroughly isolated from the normal-temperature environment. And timely discharging steam through the drain steam pipe joint 3.2. The reliability and the strength of connection are ensured, and good sealing performance is realized, so that steam leakage through the spline shaft 3.8 is effectively prevented.
It will be understood that the invention has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. The utility model provides a turbine rotating barrier corner controlling means, includes servomotor (6) and rotating barrier (14), its characterized in that: the oil motor is connected to the lower half side wall of the outer cylinder of the steam turbine through a connecting bracket (8), the oil motor comprises a piston rod, an oil motor horizontal connecting rod (7) and a guide rod (9), threads are arranged at the top end of the piston rod, a through hole is formed in the middle of the oil motor horizontal connecting rod (7), the piston rod penetrates through the through hole of the oil motor horizontal connecting rod (7) and is vertically connected with the oil motor horizontal connecting rod (7), the threads at the top end of the piston rod are connected with the guide rod (9), and the guide rod (9) guides the piston rod; the novel hydraulic steering engine is characterized in that square holes are formed in two ends of the horizontal connecting rod (7) of the hydraulic engine respectively, each square hole is connected with a Y-shaped connecting rod (5) respectively, the top ends of the two Y-shaped connecting rods (5) are hinged to the horizontal connecting rod (7) of the hydraulic engine, the bottom ends of the two Y-shaped connecting rods (5) are hinged to one end of the U-shaped connecting rod (4) respectively, the other end of the U-shaped connecting rod (4) is fixedly connected with the spline shaft rotating mechanism (3), the spline shaft rotating mechanism (3) is fixedly connected with one end of the spline shaft connecting rod (2) through spline fit, the other end of the spline shaft connecting rod (2) is hinged to one end of the rotating partition connecting rod (1), the other end of the rotating partition connecting rod (1) is hinged to the rotating partition plate (14), the spline shaft rotating mechanism (3) is connected with the spline shaft connecting rod (2) and the U-shaped connecting rod (4) respectively to form a member without relative motion relation, and a cooler (10) is arranged on the connecting support (8).
2. The rotation angle control device according to claim 1, characterized in that: the cooler (10) comprises a cooling device, a cooler shell, a cooler water inlet interface (12) and a cooler water outlet interface (11), wherein the cooling device is of a rectangular integrated structure formed by fixedly connecting a plurality of layers of corrugated runner plates, the cooler shell is a hollow sealed rectangular shell, the cooling device is arranged in the cooler shell, the outer side face of the cooling device is in fit with the inner side face of the cooler shell and is fixedly connected with the inner side face of the cooler shell, the cooler water inlet interface (12) is arranged at the lower position of one side of the shell, the cooler water outlet interface (11) is arranged at the upper position of the other side of the shell, through holes are formed in each layer of corrugated runner plates of the cooler (10) and are arranged at the positions close to the shell in the length direction of the corrugated runner plates, and the through holes on the adjacent corrugated runner plates are arranged in a staggered mode.
3. The rotation angle control device according to claim 1, characterized in that: the upper end and the lower end of the Y-shaped connecting rod (5) are respectively connected with the horizontal connecting rod (7) and the U-shaped connecting rod (4) of the hydraulic motor through a pin shaft and a centripetal knuckle bearing (13).
4. The rotation angle control device according to claim 1, characterized in that: the spline shaft rotating mechanism (3) comprises a spline shaft shell (3.1) and a spline shaft (3.8), the spline shaft shell (3.1) is fixedly connected to the lower half side wall of the turbine outer cylinder, the spline shaft shell (3.1) mounting surface is tightly matched with the lower half side wall of the turbine outer cylinder, the left end and the right end of the spline shaft shell (3.1) are of through structures, the spline shaft (3.8) is installed inside the spline shaft shell (3.1) in a penetrating mode, the spline shaft (3.8) comprises a threaded section, a spline section and an optical axis section, an external spline is arranged on the spline section, one end of the spline shaft shell (3.1) is sealed through a gland (3.3) and a sealing gasket, and the other end of the spline shaft shell is in shaft diameter matching relation with a sliding bearing (3.4), a rubber asbestos packing (3.5) and a pressing ring (3.7) playing an axial sealing role at the same time, the spline shaft (3.8) penetrates through the sliding bearing (3.4) on the spline section and is connected to the spline section (3.2) on the spline section.
5. The rotation angle control device according to claim 4, characterized in that: the sleeve is fixed to the sliding bearing (3.4) through screws, the sleeve is fixed to the spline shaft housing (3.1) through screws, and the rubber asbestos packing (3.5) and the pressing ring (3.7) are fixed to the sliding bearing (3.4) through bolts.
6. The rotation angle control device according to claim 4, characterized in that: the spline shaft (3.8) is also provided with an adjusting backing ring (3.10) for adjusting the axial clearance between the inner wall of the spline shaft shell (3.1) and the side surface of the spline shaft connecting rod (2).
7. The rotation angle control device according to claim 4, characterized in that: the light Duan Zhou of the spline shaft (3.8) is insulated and sealed through the sleeve (3.11) and the rubber asbestos gasket (3.12), and the spline shaft (3.8) is fixed with the sleeve (3.11) through the gasket and the nut.
8. The rotation angle control device according to claim 7, characterized in that: the sleeve (3.11) and the outer cylindrical surface of the sliding bearing (3.4) are in transition fit with the inner surface of the spline shaft shell (3.1).
9. The rotation angle control device according to claim 4, characterized in that: radial exhaust holes are respectively formed in the gland (3.3) and the spline shaft shell (3.1), the radial exhaust holes in the spline shaft shell (3.1) are formed in positions corresponding to the sliding bearings (3.4), and a drain steam pipe joint (3.2) is arranged at the radial steam exhaust holes.
10. The rotation angle control device according to claim 4, characterized in that: an end cover (3.9) for protecting the spline shaft (3.8) is arranged on the end face of the optical axis broken side of the spline shaft (3.8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311681476.1A CN117514374A (en) | 2023-12-08 | 2023-12-08 | Rotating partition plate corner control device of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311681476.1A CN117514374A (en) | 2023-12-08 | 2023-12-08 | Rotating partition plate corner control device of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117514374A true CN117514374A (en) | 2024-02-06 |
Family
ID=89758773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311681476.1A Pending CN117514374A (en) | 2023-12-08 | 2023-12-08 | Rotating partition plate corner control device of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117514374A (en) |
-
2023
- 2023-12-08 CN CN202311681476.1A patent/CN117514374A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206092847U (en) | Cold lead screw of cavity oil | |
| CN207377893U (en) | A kind of hydrostatic support formula servo oscillating hydraulic cylinder and apply its mechanical equipment | |
| CN117514374A (en) | Rotating partition plate corner control device of steam turbine | |
| CN216264931U (en) | Cooling structure of lead screw bearing | |
| CN216895923U (en) | Three-way valve for VOCs equipment | |
| CN214789035U (en) | High-temperature high-pressure mechanical sealing device for composite power groove | |
| CN103352865B (en) | Bearing anti-fouler and be provided with the centrifugal pump of bearing anti-fouler | |
| CN213145694U (en) | Rotary joint assembly for hot rolling coiling machine | |
| CN110479197B (en) | Sealing device based on magnetic stirring transmission | |
| CN210715280U (en) | Pump for food processing | |
| CN212297302U (en) | Waist installation intermediate bearing of ship main propulsion shafting | |
| CN201636324U (en) | Sealing device of active self-adaptive control machine | |
| CN211874827U (en) | Prevent centrifugal fan of high temperature usage that leaks | |
| CN108916107B (en) | Water-cooled bearing component for pump | |
| CN107355543A (en) | A kind of outer flushing built-in bearing integrated mechanical sealing | |
| CN210318503U (en) | Mechanical sealing device | |
| CN210317773U (en) | Vertical centrifugal pump for primary loop of lead-bismuth reactor | |
| CN208605391U (en) | A kind of machine seal structure of circulating pump | |
| CN114321372A (en) | High-temperature high-pressure mechanical sealing device for composite power groove and using method thereof | |
| CN116429334B (en) | Metal skeleton rotation axis lip seal circle capability test evaluation device | |
| CN110332314A (en) | A kind of mechanically-sealing apparatus | |
| CN208919333U (en) | A kind of mechanical seal for slurry evaporator | |
| CN220249005U (en) | Ball valve | |
| CN108799191A (en) | A kind of machine seal structure of circulating pump | |
| CN215720836U (en) | Special radial jacket double-end-face mechanical seal for integrated stirring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |