Staggered steam turbine cylinder vertical direct matching surface assembly structure and steam turbine cylinder thereof

Abstract

The invention relates to the technical field of steam turbine cylinders, and discloses a staggered steam turbine cylinder vertical direct matching surface assembly structure and a steam turbine cylinder thereof.The staggered steam turbine cylinder vertical direct matching surface assembly structure comprises a steam turbine front cylinder upper half part, a steam turbine front cylinder lower half part, a steam turbine rear cylinder upper half part and a steam turbine rear cylinder lower half part; front cylinder lower half horizontal flanges are fixedly connected to the two sides of the top of the turbine front cylinder lower half, the front cylinder lower half horizontal flanges are matched with the front cylinder upper half horizontal flanges, and rear cylinder upper half horizontal flanges are fixedly connected to the two sides of the bottom of the turbine rear cylinder upper half. According to the steam turbine cylinder assembly structure, the technical effects that the stability and the sealing performance of the steam turbine cylinder assembly structure are improved, the risk of thermal stress concentration is reduced, the service life of equipment is prolonged, efficient operation of a unit is guaranteed, meanwhile, the mounting and dismounting efficiency of the steam turbine cylinder is greatly improved, and the maintenance cost and the downtime are reduced are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of steam turbine cylinders, in particular to a staggered steam turbine cylinder vertical joint surface assembly structure and a steam turbine cylinder thereof. Background Art

[0002] A steam turbine is a rotary power machine that converts the thermal energy of steam into mechanical energy. It is mainly composed of components such as a stator and a rotor. It has the characteristics of high power, high efficiency, smooth and reliable operation. It is widely used in many fields such as thermal power generation and nuclear power. It is a key equipment to promote the generation of generators and drive the operation of various large-scale machinery.

[0003] In the prior art, the axial sections of the steam turbine cylinders are generally divided into upper and lower cylinders and left and right cylinders, which are fixedly connected by flanges and bolts. However, a cross gap will appear at the connection of the four cylinders. During the use of the steam turbine, the location of the cross gap is often a high-incidence area of ​​air leakage. At the same time, the fixed connection with multiple bolts makes installation and maintenance inconvenient, reducing work efficiency. For this reason, an assembly structure of the vertical mating surface of the staggered steam turbine cylinder and its steam turbine cylinder are designed. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the prior art and to propose a staggered steam turbine cylinder vertical joint surface assembly structure and a steam turbine cylinder thereof.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The staggered turbine cylinder vertical joint surface assembly structure and the turbine cylinder thereof include the upper half of the turbine front cylinder, the lower half of the turbine front cylinder, the upper half of the turbine rear cylinder and the lower half of the turbine rear cylinder, the bottom of the upper half of the turbine front cylinder is fixedly connected with the upper half horizontal flange of the front cylinder on both sides, the top of the lower half of the turbine front cylinder is fixedly connected with the lower half horizontal flange of the front cylinder on both sides, and the lower half horizontal flange of the front cylinder is matched with the upper half horizontal flange of the front cylinder, the bottom of the upper half of the turbine rear cylinder is fixedly connected with the upper half horizontal flange of the rear cylinder on both sides, the top of the lower half of the turbine rear cylinder is fixedly connected with the lower half horizontal flange of the rear cylinder on both sides, and the upper half horizontal flange of the rear cylinder is matched with the lower half horizontal flange of the rear cylinder, the end of the upper half of the turbine front cylinder close to the upper half of the turbine rear cylinder is fixedly connected with the upper half vertical flange of the front cylinder, the The end of the upper half of the rear cylinder of the turbine close to the upper half of the front cylinder of the turbine is fixedly connected with the upper vertical flange of the rear cylinder, and the upper vertical flange of the rear cylinder is matched with the upper vertical flange of the front cylinder. The end of the lower half of the front cylinder of the turbine close to the lower half of the rear cylinder of the turbine is fixedly connected with the lower vertical flange of the front cylinder. The end of the lower half of the rear cylinder of the turbine close to the lower half of the front cylinder of the turbine is fixedly connected with the lower vertical flange of the rear cylinder, and the lower vertical flange of the rear cylinder is matched with the lower vertical flange of the front cylinder. The lower vertical flange of the front cylinder and the upper vertical flange of the front cylinder are not in the same vertical plane, and the upper vertical flange of the rear cylinder and the lower vertical flange of the rear cylinder are not in the same vertical plane. The cross gap is avoided by staggering the upper vertical flange of the front cylinder and the upper vertical flange of the rear cylinder and the lower vertical flange of the front cylinder and the lower vertical flange of the rear cylinder.

[0007] As a further solution of the present invention, it includes multiple first connecting mechanisms and two second connecting mechanisms, the first connecting mechanism is arranged between the upper horizontal flange of the front cylinder and the lower horizontal flange of the front cylinder and the upper horizontal flange of the rear cylinder and the lower horizontal flange of the rear cylinder, the first connecting mechanism includes a bottom rod located at the bottom of the lower horizontal flange of the front cylinder or the lower horizontal flange of the rear cylinder, the top ends of the bottom rod are fixedly connected with first plug rods, the sides of the tops of the two first plug rods that are close to each other are provided with oblique grooves, the circumferential surfaces of the two first plug rods are slidingly sleeved with pressure rods and sleeve plates, and the pressure rods are located in the sleeves At the bottom of the plate, a first screw rod is screwed in the middle of the sleeve plate, a screw rod nut matched with the first screw rod is fixedly sleeved in the middle of the sleeve plate, a lifting plate is rotatably connected to the bottom of the first screw rod, and a second nut is fixedly connected to the top of the first screw rod, vertical rods are fixedly connected to both sides of the bottom of the sleeve plate, and the bottoms of the two vertical rods on the same side are rotatably connected to the same rotating rod, grooves are opened on the adjacent sides of the two rotating rods, and straight holes are opened on both sides of the grooves, and baffle rods are fixedly connected to both sides of the two ends of the lifting plate, and each baffle rod is slidably connected in the adjacent straight holes.

[0008] As a further solution of the present invention, the first connecting mechanism also includes sliding holes opened on both sides of the lifting plate, and T-shaped blocks are slidably connected in the two sliding holes. The bottoms of the two T-shaped blocks are fixedly connected to the same iron frame, and a ratchet is provided on one side of the inner wall of the iron frame. A magnetic block is fixedly connected to the side of the bottom of the lifting plate away from the ratchet, and the magnetic block is adapted to the iron frame. The bottom of the first screw rod passes through the lifting plate and is fixedly connected to a ratchet, and the ratchet is adapted to the ratchet. Through the arrangement of the ratchet and the iron frame, the first screw rod will not loosen.

[0009] As a further solution of the present invention, the first connecting mechanism also includes a U-shaped plate fixedly connected to the two ends of the top of the sleeve plate, the middle parts of the two U-shaped plates are slidably sleeved with oblique clamping blocks, and the two oblique clamping blocks are adapted to the oblique grooves, the middle parts of the two oblique clamping blocks are provided with transverse holes adapted to the U-shaped plates, the sides close to the two oblique clamping blocks are fixedly connected with first magnets, and the top of the sleeve plate is fixedly connected with second magnets near the two first magnets, and the magnetism of the side where the first magnet and the second magnet on the same side are close to each other is the same, through the setting of the first connecting mechanism, the upper half of the front cylinder of the turbine and the lower half of the front cylinder of the turbine or the upper half of the rear cylinder of the turbine and the lower half of the rear cylinder of the turbine can be fixedly connected quickly, thereby improving the installation efficiency.

[0010] As a further scheme of the present invention, the second connecting mechanism is arranged between the upper vertical flange of the front cylinder and the upper vertical flange of the rear cylinder or the lower vertical flange of the front cylinder and the lower vertical flange of the rear cylinder, the second connecting mechanism includes an arc cover sleeved on the upper vertical flange of the front cylinder or the lower vertical flange of the front cylinder, a connecting piece is fixedly connected to one side of the outer wall of the arc cover, and the two ends of the connecting piece on the side close to the arc cover are fixedly connected to fixed blocks, the same rotating rod is rotatably sleeved between the two fixed blocks, and the two fixed blocks are provided with circular holes adapted to the rotating rod, the two ends of the rotating rod are fixedly connected to a worm, and the thread directions of the two worms are the same, the two ends of the connecting piece on the side close to the arc cover are rotatably connected to square rods, the ends of the two square rods away from the arc cover are fixedly sleeved with worm wheels, and each worm wheel is meshed with the adjacent worm, and one end of the rotating rod is fixedly connected to a first nut.

[0011] As a further solution of the present invention, the second connecting mechanism also includes a sliding sleeve arranged on the surface of the two square rods, and the thread directions of the two threaded sleeves are the same. The middle part of the two threaded sleeves is provided with square holes that are compatible with the square rods. The other ends of the two threaded sleeves are threaded through the arc cover and are rotatably connected to the same arc pressure plate. The fixed sleeve on the arc cover is provided with two screw nuts that are compatible with the threaded sleeves.

[0012] As a further solution of the present invention, the second connecting mechanism also includes four second plug rods fixedly connected to the arc pressure plate away from the connecting piece, and a plug hole compatible with the second plug rod is opened on the side of the arc cover away from the connecting piece. Through the setting of the second connecting mechanism, the connection method between the upper half of the front cylinder of the turbine and the upper half of the rear cylinder of the turbine or the lower half of the front cylinder of the turbine and the lower half of the rear cylinder of the turbine is improved.

[0013] The beneficial effects of the present invention are:

[0014] The present invention adopts the technical means of the upper half of the front cylinder of the turbine, the lower half of the front cylinder of the turbine, the upper half of the rear cylinder of the turbine, the lower half of the rear cylinder of the turbine, the first connecting mechanism and the second connecting mechanism. The upper half vertical flange of the front cylinder, the upper half vertical flange of the rear cylinder and the lower half vertical flange of the front cylinder are staggered with each other, so as to avoid the generation of cross gaps. At the same time, under the action of the first connecting mechanism and the second connecting mechanism, the upper half of the front cylinder of the turbine, the lower half of the front cylinder of the turbine, the upper half of the rear cylinder of the turbine and the lower half of the rear cylinder of the turbine can be quickly fixed, the use of bolts is reduced, the efficiency of installation and disassembly is improved, and the problems raised in the background technology are effectively solved, thereby achieving the improvement of the stability and sealing of the turbine cylinder assembly structure, reducing the risk of thermal stress concentration, extending the service life of the equipment, and while ensuring the efficient operation of the unit, greatly improving the installation and disassembly efficiency of the turbine cylinder, and reducing the maintenance cost and downtime. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the staggered steam turbine cylinder vertical joint surface assembly structure and the steam turbine cylinder thereof proposed by the present invention;

[0016] Figure 2 It is a structural schematic diagram of the first connecting mechanism of the staggered steam turbine cylinder vertical mating surface assembly structure proposed by the present invention;

[0017] Figure 3 It is a structural schematic diagram of the assembly structure sleeve plate of the staggered vertical joint surface of the steam turbine cylinder proposed by the present invention;

[0018] Figure 4 The invention provides a staggered steam turbine cylinder vertical joint surface assembly structure. Figure 3 A schematic diagram of the structure enlarged at A;

[0019] Figure 5 It is a structural schematic diagram of the bottom of the lifting plate of the staggered steam turbine cylinder vertical joint surface assembly structure proposed by the present invention;

[0020] Figure 6 It is a structural schematic diagram of the second connection mechanism of the staggered steam turbine cylinder vertical mating surface assembly structure proposed by the present invention;

[0021] Figure 7 This is a partial structural schematic diagram of the second connecting mechanism of the staggered steam turbine cylinder vertical mating surface assembly structure proposed by the present invention.

[0022] In the figure: 1. Upper half of the front cylinder of the steam turbine; 101. Horizontal flange of the upper half of the front cylinder; 102. Vertical flange of the upper half of the front cylinder; 2. Lower half of the front cylinder of the steam turbine; 201. Horizontal flange of the lower half of the front cylinder; 202. Vertical flange of the lower half of the front cylinder; 3. Upper half of the rear cylinder of the steam turbine; 301. Horizontal flange of the upper half of the rear cylinder; 302. Vertical flange of the upper half of the rear cylinder; 4. Lower half of the rear cylinder of the steam turbine; 401. Horizontal flange of the lower half of the rear cylinder; 402. Vertical flange of the lower half of the rear cylinder; 5. First connecting mechanism; 501. Bottom rod; 502. First plug rod; 503. Inclined groove; 504. Pressure rod; 505. Bushing; 506. Vertical rod; 507. Rotating rod; 508. 08, straight hole; 509, first screw rod; 510, lifting plate; 511, U-shaped plate; 512, oblique clamping block; 513, first magnet; 514, second magnet; 515, stop rod; 516, sliding hole; 517, iron frame; 518, magnetic block; 519, ratchet; 520, ratchet; 521, T-shaped block; 6, second connecting mechanism; 601, arc cover; 602, socket; 603, arc pressure plate; 604, second plug rod; 605, connecting piece; 607, fixing block; 608, rotating rod; 609, worm; 610, first nut; 611, square rod; 612, worm wheel; 613, threaded sleeve. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] Reference Figure 1-Figure 7, an assembly structure of staggered turbine cylinder vertical joint surfaces and a turbine cylinder thereof, comprising a turbine front cylinder upper half 1, a turbine front cylinder lower half 2, a turbine rear cylinder upper half 3 and a turbine rear cylinder lower half 4, wherein both sides of the bottom of the turbine front cylinder upper half 1 are fixedly connected with front cylinder upper half horizontal flanges 101, both sides of the top of the turbine front cylinder lower half 2 are fixedly connected with front cylinder lower half horizontal flanges 201, and the front cylinder lower half horizontal flanges 201 are matched with the front cylinder upper half horizontal flange 101, both sides of the bottom of the turbine rear cylinder upper half 3 are fixedly connected with rear cylinder upper half horizontal flanges 301, both sides of the top of the turbine rear cylinder lower half 4 are fixedly connected with rear cylinder lower half horizontal flanges 401, and the rear cylinder upper half horizontal flanges 301 are matched with the rear cylinder lower half horizontal flanges 401, and the turbine front cylinder upper half 1 is close to the turbine rear cylinder upper half 3 is fixedly connected with the front cylinder upper half vertical flange 102, the end of the turbine rear cylinder upper half 3 close to the turbine front cylinder upper half 1 is fixedly connected with the rear cylinder upper half vertical flange 302, and the rear cylinder upper half vertical flange 302 is matched with the front cylinder upper half vertical flange 102, the end of the turbine front cylinder lower half 2 close to the turbine rear cylinder lower half 4 is fixedly connected with the front cylinder lower half vertical flange 202, the end of the turbine rear cylinder lower half 4 close to the turbine front cylinder lower half 2 is fixedly connected with the rear cylinder lower half vertical flange 402, and the rear cylinder lower half vertical flange 402 is matched with the front cylinder lower half vertical flange 202, the front cylinder lower half vertical flange 202 and the front cylinder upper half vertical flange 102 are not in the same vertical plane, and the rear cylinder upper half vertical flange 302 and the rear cylinder lower half vertical flange 402 are not in the same vertical plane.

[0026] In this embodiment, a plurality of first connection mechanisms 5 and two second connection mechanisms 6 are included. The first connection mechanism 5 is arranged between the upper horizontal flange 101 of the front cylinder and the lower horizontal flange 201 of the front cylinder and between the upper horizontal flange 301 of the rear cylinder and the lower horizontal flange 401 of the rear cylinder. The first connection mechanism 5 includes a bottom rod 501 located at the bottom of the lower horizontal flange 201 of the front cylinder or the lower horizontal flange 401 of the rear cylinder. The top ends of the bottom rod 501 are fixedly connected with first plug rods 502. The sides of the tops of the two first plug rods 502 that are close to each other are both provided with inclined grooves 503. The circumferential surfaces of the two first plug rods 502 are slidably sleeved with pressure rods 504 and sleeve plates 505, and the pressure rods 504 are located at the sleeve plates 50 5, a first screw rod 509 is screwed in the middle of the sleeve plate 505, a screw nut matched with the first screw rod 509 is fixedly sleeved in the middle of the sleeve plate 505, a lifting plate 510 is rotatably connected to the bottom of the first screw rod 509, a second nut is fixedly connected to the top of the first screw rod 509, vertical rods 506 are fixedly connected to both sides of the bottom of the sleeve plate 505, and the bottoms of the two vertical rods 506 on the same side are rotatably connected to the same rotating rod 507, grooves are opened on the adjacent sides of the two rotating rods 507, and straight holes 508 are opened on both sides of the grooves, and blocking rods 515 are fixedly connected to both sides of the two ends of the lifting plate 510, and each blocking rod 515 is slidably connected in the adjacent straight holes 508.

[0027] In this embodiment, the first connecting mechanism 5 also includes sliding holes 516 opened on both sides of the lifting plate 510, and T-shaped blocks 521 are slidably connected in the two sliding holes 516. The bottoms of the two T-shaped blocks 521 are fixedly connected to the same iron frame 517, and a ratchet 519 is provided on one side of the inner wall of the iron frame 517. A magnetic block 518 is fixedly connected to the side of the bottom of the lifting plate 510 away from the ratchet 519, and the magnetic block 518 is adapted to the iron frame 517. The bottom of the first screw rod 509 passes through the lifting plate 510 and is fixedly connected to a ratchet 520, and the ratchet 520 is adapted to the ratchet 519. The cooperation between the ratchet 519 and the ratchet 520 prevents the first screw rod 509 from loosening automatically. Only when the iron frame 517 is moved to the other side can the first screw rod 509 be reversed.

[0028] In this embodiment, the first connecting mechanism 5 also includes a U-shaped plate 511 fixedly connected to the two ends of the top of the sleeve plate 505, and the middle parts of the two U-shaped plates 511 are slidably sleeved with oblique clamping blocks 512, and the two oblique clamping blocks 512 are adapted to the oblique groove 503, and the middle parts of the two oblique clamping blocks 512 are provided with transverse holes adapted to the U-shaped plates 511, and the sides close to the two oblique clamping blocks 512 are fixedly connected with the first magnet 513, and the top of the sleeve plate 505 is fixedly connected with the second magnet 514 near the two first magnets 513, and the magnetic properties of the side where the first magnet 513 and the second magnet 514 on the same side are close to each other are the same, and the arrangement of the first magnet 513 and the second magnet 514 prevents the oblique clamping blocks 512 from separating from the oblique groove 503. When disassembly is required, the two oblique clamping blocks 512 can be brought close to each other to achieve disassembly.

[0029] In this embodiment, the second connecting mechanism 6 is arranged between the upper vertical flange 102 of the front cylinder and the upper vertical flange 302 of the rear cylinder or the lower vertical flange 202 of the front cylinder and the lower vertical flange 402 of the rear cylinder, and the second connecting mechanism 6 includes an arc cover 601 sleeved on the upper vertical flange 102 of the front cylinder or the lower vertical flange 202 of the front cylinder, and a connecting piece 605 is fixedly connected to one side of the outer wall of the arc cover 601, and both ends of the connecting piece 605 close to the side of the arc cover 601 are fixedly connected to fixed blocks 607, and the same rotating rod 608 is rotatably sleeved between the two fixed blocks 607, and the two fixed blocks 60 7 are provided with round holes adapted to the rotating rod 608, both ends of the rotating rod 608 are fixedly connected with worms 609, and the thread directions of the two worms 609 are the same, the two ends of the connecting member 605 close to the arc cover 601 are rotatably connected with square rods 611, and the ends of the two square rods 611 away from the arc cover 601 are fixedly sleeved with worm wheels 612, the cooperation between the worm wheels 612 and the worms 609 prevents the rotating rod 608 from loosening, thereby ensuring the stability of the second connecting mechanism 6, and each worm wheel 612 is meshed with the adjacent worm 609, and one end of the rotating rod 608 is fixedly connected with a first nut 610.

[0030] In this embodiment, the second connecting mechanism 6 also includes a threaded sleeve 613 that is slidably sleeved on the surface of the two square rods 611, and the thread directions of the two threaded sleeves 613 are the same. The middle parts of the two threaded sleeves 613 are provided with square holes that are compatible with the square rods 611. The cooperation between the square rods 611 and the threaded sleeves 613 enables the square rods 611 to still drive the threaded sleeves 613 to rotate when the threaded sleeves 613 move. The other ends of the two threaded sleeves 613 are threaded through the arc cover 601 and are rotatably connected to the same arc pressure plate 603. Two screw nuts that are compatible with the threaded sleeves 613 are fixedly sleeved on the arc cover 601.

[0031] In this embodiment, the second connecting mechanism 6 also includes four second plug rods 604 fixedly connected to the arc pressure plate 603 away from the connecting member 605, and a socket 602 adapted to the second plug rods 604 is provided on the side of the arc cover 601 away from the connecting member 605. Through the setting of the second connecting mechanism 6, the upper vertical flange 102 of the front cylinder and the upper vertical flange 302 of the rear cylinder or the lower vertical flange 202 of the front cylinder and the lower vertical flange 402 of the rear cylinder can be quickly fixed.

[0032] Working principle: When installing the upper half 1 of the front cylinder of the turbine, the lower half 2 of the front cylinder of the turbine, the upper half 3 of the rear cylinder of the turbine and the lower half 4 of the rear cylinder of the turbine, a plurality of first connecting mechanisms 5 are arranged between the upper horizontal flange 101 of the front cylinder and the lower horizontal flange 201 of the front cylinder or the upper horizontal flange 301 of the rear cylinder and the lower horizontal flange 401 of the rear cylinder on the same side, each first plug rod 502 is inserted into the corresponding fixing hole, and then the pressure rod 504 is inserted into the two first plug rods 502, and then the two sleeve plates 505 are inserted into the two first plug rods 502. The first plug rod 502 is inserted into the first plug rod 502, so that the two oblique clamping blocks 512 are clamped in the oblique groove 503. Under the action of the first magnet 513 and the second magnet 514, the oblique clamping blocks 512 are not easily separated from the oblique groove 503. The second nut on the top of the first screw rod 509 is rotated by a tool to make the lifting plate 510 rise. The setting of the stop rod 515 and the straight hole 508 makes the bottom of the two rotating rods 507 drop, and the pressing rod 504 is pressed downward, so that the upper horizontal flange 101 of the front cylinder and the lower horizontal flange 201 of the front cylinder are aligned. The first screw rod 509 is tightly fixed, and the ratchet 519 is meshed with the ratchet wheel 520 under the cooperation of the magnetic block 518 and the iron frame 517, so that the first screw rod 509 cannot be reversed, so that the upper horizontal flange 101 of the front cylinder and the upper vertical flange 102 of the front cylinder or the upper horizontal flange 301 of the rear cylinder and the lower horizontal flange 401 of the rear cylinder will not be loose, and the arc cover 601 is clamped between the upper vertical flange 102 of the front cylinder and the upper vertical flange 302 of the rear cylinder, or between the lower vertical flange 202 of the front cylinder and the lower horizontal flange 401 of the rear cylinder. Between the semi-vertical flanges 402, the first nut 610 is rotated to make the square rods 611 on both sides rotate with the threaded sleeves 613, so that the threaded sleeves 613 move with the arc pressure plate 603, and the second insertion rod 604 is inserted into the opened fixing hole, thereby fastening the upper vertical flange 102 of the front cylinder and the upper vertical flange 302 of the rear cylinder or the lower vertical flange 202 of the front cylinder and the lower vertical flange 402 of the rear cylinder. At the same time, the setting of the worm wheel 612 and the worm 609 prevents the rotating rod 608 from loosening.

[0033] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A staggered steam turbine cylinder, comprising an upper half (1) of a front steam turbine cylinder, a lower half (2) of a front steam turbine cylinder, an upper half (3) of a rear steam turbine cylinder and a lower half (4) of a rear steam turbine cylinder, characterized in that: The upper half of the front cylinder (1) of the turbine is fixedly connected to the upper half horizontal flange (101) of the front cylinder on both sides of the bottom, the lower half of the front cylinder (2) of the turbine is fixedly connected to the lower half horizontal flange (201) of the front cylinder on both sides of the top, and the lower half horizontal flange (201) of the front cylinder is matched with the upper half horizontal flange (101) of the front cylinder, the upper half horizontal flange (301) of the rear cylinder is fixedly connected to the upper half horizontal flange (301) of the rear cylinder on both sides of the bottom, the lower half of the rear cylinder (4) of the turbine is fixedly connected to the lower half horizontal flange (401) of the rear cylinder, and the upper half horizontal flange (301) of the rear cylinder is matched with the lower half horizontal flange (401), the upper half of the front cylinder (1) of the turbine is fixedly connected to the upper half vertical flange (102) of the front cylinder at one end close to the upper half of the rear cylinder (3), and the upper half of the rear cylinder (3) of the turbine is fixedly connected to the upper half horizontal flange (102) of the rear cylinder. ) is fixedly connected to an upper half vertical flange (302) of a rear cylinder at one end close to an upper half of a front cylinder (1) of the turbine, and the upper half vertical flange (302) of the rear cylinder matches with an upper half vertical flange (102) of the front cylinder; an end of a lower half vertical flange (202) of a front cylinder of the turbine is fixedly connected to an lower half vertical flange (202) of a rear cylinder of the turbine; an end of a lower half vertical flange (4) of a rear cylinder of the turbine is fixedly connected to an lower half vertical flange (402) of a rear cylinder of the turbine at one end close to an lower half of a front cylinder (2) of the turbine, and the lower half vertical flange (402) of the rear cylinder matches with an lower half vertical flange (202) of the front cylinder; the lower half vertical flange (202) of the front cylinder is not in the same vertical plane as the upper half vertical flange (102) of the front cylinder, and the upper half vertical flange (302) of the rear cylinder is not in the same vertical plane as the lower half vertical flange (402) of the rear cylinder.

2. A vertical mating surface assembly structure for staggered steam turbine cylinders, characterized in that: The invention comprises a plurality of first connection mechanisms (5) and two second connection mechanisms (6), wherein the first connection mechanisms (5) are arranged between the upper horizontal flange (101) of the front cylinder and the lower horizontal flange (201) of the front cylinder, and between the upper horizontal flange (301) of the rear cylinder and the lower horizontal flange (401) of the rear cylinder, and the first connection mechanism (5) comprises a bottom rod (501) located at the bottom of the lower horizontal flange (201) of the front cylinder or the lower horizontal flange (401) of the rear cylinder, and the top ends of the bottom rod (501) are fixedly connected with first insertion rods (502), and the sides of the tops of the two first insertion rods (502) that are close to each other are provided with inclined grooves (503), and the circumferential surfaces of the two first insertion rods (502) are slidably sleeved with pressure rods (504) and sleeve plates (505), and the pressure rods (504) are located at the bottom of the sleeve plates (505). A first screw rod (509) is screwed in the middle of the sleeve plate (505), a screw nut matched with the first screw rod (509) is fixedly sleeved in the middle of the sleeve plate (505), a lifting plate (510) is rotatably connected to the bottom of the first screw rod (509), a second nut is fixedly connected to the top of the first screw rod (509), vertical rods (506) are fixedly connected to both sides of the bottom of the sleeve plate (505), the bottoms of the two vertical rods (506) on the same side are rotatably connected to the same rotating rod (507), a groove is provided on the adjacent side of the two rotating rods (507), and straight holes (508) are provided on both sides of the groove, and blocking rods (515) are fixedly connected to both sides of the two ends of the lifting plate (510), and each blocking rod (515) is slidably connected in the adjacent straight hole (508).

3. A vertical mating surface assembly structure for staggered steam turbine cylinders according to claim 2, characterized in that: The first connection mechanism (5) further comprises sliding holes (516) provided on both sides of the lifting plate (510), a T-shaped block (521) being slidably connected to each of the two sliding holes (516), the bottoms of the two T-shaped blocks (521) being fixedly connected to the same iron frame (517), a ratchet (519) being provided on one side of the inner wall of the iron frame (517), a magnetic block (518) being fixedly connected to the side of the bottom of the lifting plate (510) away from the ratchet (519), and the magnetic block (518) being matched with the iron frame (517), and the bottom of the first screw rod (509) penetrating the lifting plate (510) and being fixedly connected to a ratchet (520), and the ratchet (520) being matched with the ratchet (519).

4. The vertical mating surface assembly structure for staggered steam turbine cylinders according to claim 2, characterized in that: The first connection mechanism (5) further comprises a U-shaped plate (511) fixedly connected to both ends of the top of the sleeve plate (505); an oblique clamping block (512) is slidably sleeved in the middle of the two U-shaped plates (511); the two oblique clamping blocks (512) are matched with the oblique groove (503); a transverse hole matched with the U-shaped plate (511) is opened in the middle of the two oblique clamping blocks (512); a first magnet (513) is fixedly connected to the adjacent sides of the two oblique clamping blocks (512); a second magnet (514) is fixedly connected to the top of the sleeve plate (505) adjacent to the two first magnets (513); and the first magnet (513) and the second magnet (514) on the same side have the same magnetic properties on the adjacent sides.

5. The vertical mating surface assembly structure for staggered steam turbine cylinders according to claim 2, characterized in that: The second connection mechanism (6) is arranged between the upper vertical flange (102) of the front cylinder and the upper vertical flange (302) of the rear cylinder or between the lower vertical flange (202) of the front cylinder and the lower vertical flange (402) of the rear cylinder, and the second connection mechanism (6) comprises an arc-shaped cover (601) sleeved on the upper vertical flange (102) of the front cylinder or the lower vertical flange (202) of the front cylinder, a connection piece (605) is fixedly connected to one side of the outer wall of the arc-shaped cover (601), and both ends of the side of the connection piece (605) close to the arc-shaped cover (601) are fixedly connected to fixing blocks (607), and a same fixing piece (607) is rotatably sleeved between the two fixing blocks (607). A rotating rod (608) is provided, and two fixed blocks (607) are each provided with a circular hole adapted to the rotating rod (608); both ends of the rotating rod (608) are fixedly connected to a worm (609), and the thread directions of the two worms (609) are the same; both ends of the connecting member (605) on a side close to the arc cover (601) are rotatably connected to square rods (611); both ends of the two square rods (611) away from the arc cover (601) are fixedly sleeved with a worm gear (612), and each worm gear (612) is meshed with the adjacent worm gear (609); and one end of the rotating rod (608) is fixedly connected to a first nut (610).

6. A vertical mating surface assembly structure for staggered steam turbine cylinders according to claim 5, characterized in that: The second connection mechanism (6) further comprises a threaded sleeve (613) slidably sleeved on the surface of the two square rods (611), wherein the thread directions of the two threaded sleeves (613) are the same, and the middle of the two threaded sleeves (613) are provided with a square hole matched with the square rods (611), and the other ends of the two threaded sleeves (613) are threadedly penetrated through the arc cover (601) and are rotatably connected to the same arc pressure plate (603), and the arc cover (601) is fixedly sleeved with two screw nuts matched with the threaded sleeves (613).

7. The vertical mating surface assembly structure for staggered steam turbine cylinders according to claim 6, characterized in that: The second connection mechanism (6) further comprises four second insertion rods (604) fixedly connected to the arc-shaped pressure plate (603) away from the connection member (605), and a plug hole (602) adapted to the second insertion rods (604) is provided on one side of the arc-shaped cover (601) away from the connection member (605).

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