CN218882748U

CN218882748U - Fixing bolt anti-loosening device for sliding plate of low-pressure cylinder of steam turbine

Info

Publication number: CN218882748U
Application number: CN202223430905.1U
Authority: CN
Inventors: 李连强; 朱宁; 王延兵
Original assignee: Jinneng Science and Technology Co Ltd
Current assignee: Jinneng Science and Technology Co Ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-04-18
Anticipated expiration: 2032-12-21

Abstract

The utility model relates to a locking technical field of bolt, concretely relates to fixing bolt locking device of steam turbine low pressure cylinder slide, including fastening bolt, fastening bolt threaded connection has cup jointed locking mechanism and can block fastening bolt on the slide in fastening bolt's the outside, and locking mechanism's bottom is fixed with the baffle, the side looks butt of baffle and slide. The device passes through the threaded sleeve and restricts fastening bolt, avoids it not hard up because of receiving the vibration, through the cooperation between notch board one, notch board two and the baffle for the threaded sleeve can't rotate, guarantees fastening bolt's fastening nature, through the elasticity telescopic link, makes the distance between notch board one and the notch board two adjustable, makes the device can be suitable for the steam turbine of different models, and extensive applicability is extensive, and the practicality is strong, is fit for using widely.

Description

Fixing bolt anti-loosening device for sliding plate of low-pressure cylinder of steam turbine

Technical Field

The utility model relates to a bolt locking technical field, concretely relates to fixing bolt locking device of steam turbine low pressure cylinder slide.

Background

The steam turbine is also called as a steam turbine engine, and is a rotary steam power device.A high-temperature high-pressure steam passes through a fixed nozzle to become an accelerated airflow and then is sprayed onto blades, so that a rotor provided with blade rows rotates, and simultaneously, the rotor does work outwards. Steam turbines are the main equipment of modern thermal power plants, and are also used in the metallurgical industry, chemical industry and ship power plants. The steam turbine consists of a rotating part and a static part. The rotor comprises a main shaft, an impeller, a moving blade, a coupling and the like. The stator comprises an air inlet part, a cylinder, a clapboard, a static cascade, a steam seal, a bearing and the like.

The bolt is used as a basic mechanical part and occupies an important position in various convenience of various equipment used for machining, product packaging and the like, the bolt is a fastener consisting of a head part and a screw (a cylinder with external threads), and the fastener needs to be matched with a nut and is used for fastening and connecting two parts with through holes.

The fixing bolt anti-loosening device for the sliding plate of the low-pressure cylinder of the steam turbine is provided aiming at the problem that the sliding plate bolt is loosened due to the vibration of the steam turbine.

Disclosure of Invention

The utility model discloses to the turbine vibration that exists at present leads to the not hard up problem of slide bolt, provide a fixing bolt locking device of steam turbine low pressure jar slide.

In order to achieve the purpose, the utility model discloses a technical scheme do, a fixing bolt locking device of steam turbine low-pressure cylinder slide, including fastening bolt, fastening bolt threaded connection is on the slide, locking mechanism has been cup jointed and can block fastening bolt in fastening bolt's the outside, locking mechanism's bottom is fixed with the baffle, the baffle limits fastening bolt through locking mechanism with the side looks butt of slide, avoids fastening bolt to rotate, side looks butt through baffle and slide for locking mechanism keeps a direction, avoids its rotation, and then realizes the locking to fastening bolt.

Further, locking mechanism includes the screw sleeve, and the screw sleeve cup joints in fastening bolt's the outside, restricts fastening bolt through the screw sleeve.

Furthermore, the outer side of the threaded sleeve is fixed with a first notch plate, the inner side of the first notch plate is inserted with a second notch plate, the bottom of the second notch plate is fixed with a baffle and is abutted against the side edge of the sliding plate, and the baffle is abutted against the side edge of the sliding plate, so that the first notch plate and the second notch plate cannot rotate, and further the rotation of the threaded sleeve is limited, and the locking of the fastening bolt is realized.

Furthermore, the inner side of the first notch plate is fixed with an elastic telescopic rod, one end of the elastic telescopic rod is fixed with the inner side of the second notch plate, and the baffle is always abutted to the side edge of the sliding plate and can be adjusted to adapt to steam turbines of different models.

Further, the elastic telescopic rod comprises a sleeve, one end of the sleeve is fixed to the inner side of the first notch plate, an inserting rod is inserted into the other end of the sleeve, one end of the inserting rod is fixed to the inner side of the second notch plate, a spring is sleeved on the outer side of the inserting rod and located inside the sleeve, the spring is located inside the sleeve and keeps in a shrinkage state between the sleeve and the inserting rod through the spring, and then the first notch plate and the second notch plate are made to shrink all the time.

Further, rectangular groove has been seted up to the both sides of notch board one, and the equal sliding connection in inboard in two rectangular grooves has the handle, and two handles all are fixed with the outside of notch board two, through the cooperation between handle and the rectangular groove to the staff adjusts the distance between notch board one and the notch board two.

The utility model has the advantages that:

the device passes through the threaded sleeve and restricts fastening bolt, avoids it not hard up because of receiving the vibration, through the cooperation between notch board one, notch board two and the baffle for the threaded sleeve can't rotate, guarantees fastening bolt's fastening nature, through the elasticity telescopic link, makes the distance between notch board one and the notch board two adjustable, makes the device can be suitable for the steam turbine of different models, and extensive applicability is extensive, and the practicality is strong, is fit for using widely.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective view of the present invention.

Fig. 3 is a front sectional view of the anti-loosening mechanism of the present invention.

Fig. 4 is a front sectional view of the elastic telescopic rod of the present invention.

In the figure: 1. a slide plate; 2. fastening a bolt; 3. a locking mechanism; 4. a baffle plate; 31. a threaded sleeve; 32. a first notch plate; 33. a notch plate II; 34. an elastic telescopic rod; 341. a sleeve; 342. a rod is inserted; 343. a spring.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection of this patent.

As shown in fig. 1-4, in this embodiment, the anti-loosening device for the fixing bolt of the sliding plate of the low pressure cylinder of the steam turbine according to the present invention includes a fastening bolt 2, the fastening bolt 2 is screwed on the sliding plate 1, the outer side of the fastening bolt 2 is sleeved with a loosening prevention mechanism 3 and can clamp the fastening bolt 2, the bottom of the loosening prevention mechanism 3 is fixed with a baffle 4, the baffle 4 abuts against the side edge of the sliding plate 1, the loosening prevention mechanism 3 includes a threaded sleeve 31, the threaded sleeve 31 is sleeved on the outer side of the fastening bolt 2, the fastening bolt 2 is limited by the threaded sleeve 31, the outer side of the threaded sleeve 31 is fixed with a first notch plate 32, the inner side of the first notch plate 32 is inserted with a second notch plate 33, the bottom of the second notch plate 33 is fixed with a baffle 4 and abuts against the side edge of the sliding plate 1, the baffle 4 abuts against the side edge of the sliding plate 1, so that the first notch plate 32 and the second notch plate 33 cannot rotate, the rotation of the threaded sleeve 31 is further limited to realize the anti-loosening of the fastening bolt 2, an elastic telescopic rod 34 is fixed on the inner side of the first slot plate 32, one end of the elastic telescopic rod 34 is fixed with the inner side of the second slot plate 33, the baffle 4 is always abutted against the side edge of the sliding plate 1 through the elastic telescopic rod 34 and can be adjusted to adapt to steam turbines of different models, the elastic telescopic rod 34 comprises a sleeve 341, one end of the sleeve 341 is fixed with the inner side of the first slot plate 32, the other end of the sleeve 341 is inserted with an inserted rod 342, one end of the inserted rod 342 is fixed with the inner side of the second slot plate 33, the outer side of the inserted rod 342 is sleeved with a spring 343, the spring 343 is located inside the sleeve 341, the telescopic state between the sleeve 341 and the inserted rod 342 is kept through the spring 343, the first slot plate 32 and the second slot plate 33 are further enabled to be always contracted, long grooves are formed in two sides of the first slot plate 32, the equal sliding connection in inboard in two rectangular grooves has the handle, two handles are all fixed with the outside of two 33 slotted plates, cooperation through handle and rectangular groove between, so that the staff adjusts the distance between a slotted plate 32 and two 33 slotted plates, restrict fastening bolt 2 through locking mechanism 3, avoid fastening bolt 2 to rotate, side looks butt through baffle 4 and slide 1, make locking mechanism 3 keep a direction, avoid its rotation, and then realize the locking to fastening bolt 2.

The working principle of the fixing bolt anti-loosening device for the sliding plate of the low-pressure cylinder of the steam turbine is as follows:

at first with threaded sleeve 31 suit on fastening bolt 2, then the staff stimulates the handle, make the handle remove in rectangular inslot, and then drive two 33 removals of notch board, remove suitable position after, make baffle 4 and slide 1's side looks butt, simultaneously through elastic telescopic rod 34, make baffle 4 and slide 1's side remain the butt state throughout, avoid threaded sleeve 31 to rotate, and then make fastening bolt 2 unable rotation, in order to realize locking to fastening bolt 2.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a fixing bolt locking device of steam turbine low pressure jar slide, includes fastening bolt (2), and fastening bolt (2) threaded connection has cup jointed locking mechanism (3) and can block fastening bolt (2) on slide (1) its characterized in that, the outside of fastening bolt (2), and the bottom of locking mechanism (3) is fixed with baffle (4), baffle (4) and the side looks butt of slide (1).

2. The fixing bolt looseness prevention device for the sliding plate of the low pressure cylinder of the steam turbine according to claim 1, wherein the looseness prevention mechanism (3) comprises a threaded sleeve (31), and the threaded sleeve (31) is sleeved on the outer side of the fastening bolt (2).

3. The locking device for the fixing bolt of the sliding plate of the low pressure cylinder of the steam turbine as claimed in claim 2, characterized in that the outer side of the threaded sleeve (31) is fixed with a first notch plate (32), the inner side of the first notch plate (32) is inserted with a second notch plate (33), and the bottom of the second notch plate (33) is fixed with a baffle (4) and is attached to the side edge of the sliding plate (1).

4. The fixing bolt looseness prevention device for the sliding plate of the low pressure cylinder of the steam turbine according to claim 3, wherein an elastic expansion link (34) is fixed to the inner side of the first notch plate (32), and one end of the elastic expansion link (34) is fixed to the inner side of the second notch plate (33).

5. The anti-loosening device for the fixing bolt of the sliding plate of the low-pressure cylinder of the steam turbine as claimed in claim 4, wherein the elastic expansion rod (34) comprises a sleeve (341), one end of the sleeve (341) is fixed to the inner side of the first notch plate (32), the other end of the sleeve (341) is inserted with an insertion rod (342), one end of the insertion rod (342) is fixed to the inner side of the second notch plate (33), a spring (343) is sleeved on the outer side of the insertion rod (342), and the spring (343) is located inside the sleeve (341).

6. The anti-loosening device for the fixing bolt of the sliding plate of the low pressure cylinder of the steam turbine as claimed in claim 5, wherein the slot plate I (32) is provided with elongated slots on both sides, the inner sides of the two elongated slots are slidably connected with the handles, and the two handles are fixed with the outer sides of the slot plate II (33).