CN210290993U

CN210290993U - Axial limiting device for high-temperature high-pressure steam pipeline in power plant

Info

Publication number: CN210290993U
Application number: CN201920838983.4U
Authority: CN
Inventors: 朱玲玲; 潘海波; 贺启利; 邵晴; 朱永欣; 黄永福; 李洪琛; 黄新平
Original assignee: China Energy Engineering Group Anhui Electric Power Design Institute Co Ltd
Current assignee: China Energy Engineering Group Anhui Electric Power Design Institute Co Ltd
Priority date: 2019-06-04
Filing date: 2019-06-04
Publication date: 2020-04-10
Anticipated expiration: 2029-06-04

Abstract

The utility model relates to a power plant steam conduit field, concretely relates to axial stop device for high temperature high pressure steam conduit in power plant, carry the pipe clamp at steam conduit's the removal including the staple bolt, the side that moves and carries the pipe clamp is provided with the door type fender frame of rigid coupling civil engineering, is equipped with the vacancy portion that supplies steam conduit to pass on this door type fender frame, moves and carries the pipe clamp and keep off the axial spacing clearance that leaves steam conduit between the frame with the door type, moves and is provided with the connecting piece between the steam conduit pipe wall of carrying pipe clamp and its side, moves and carries the pipe clamp and be provided with the buffer block on being close to the face that door type kept off frame one side. The steam pipe is arranged along the horizontal direction, the dynamic load pipe clamp is fixed on the steam pipe, the dynamic load pipe clamp can be driven to move together when the steam pipe generates axial movement, the buffer block is blocked after being moved to the position abutting against the door-shaped baffle frame, and the steam pipe can not move continuously, so that the axial limit of the steam pipe is realized.

Description

Axial limiting device for high-temperature high-pressure steam pipeline in power plant

Technical Field

The utility model relates to a power plant steam conduit field, concretely relates to an axial stop device that is used for high temperature high pressure steam conduit in power plant.

Background

Along with the rapid development of economy, the increase of power consumption load, all places are towards building high-capacity high-parameter units, the pipeline arrangement requirement of high-temperature high-pressure parameters in a plant is high, the stress requirement is met, certain temperature loss and pressure drop requirements are also met, the self-compensation capacity of the pipeline is insufficient, and the requirements of pipeline arrangement and equipment interfaces are met by using special limiting devices. In the calculation of high-temperature and high-pressure parameter pipelines of the unit, the design of the supporting and hanging bracket is closely related to the safe operation of the pipeline and equipment. The high-temperature high-pressure steam pipelines in the plants have more self-compensation limiting conditions due to high parameters, large stress and more problems of large pipeline stress, difficult selection of pipeline supporting and hanging frames and the like caused by the fact that the local pipeline sections need to limit axial horizontal load in the design process, and the local areas of the pipelines need to be provided with horizontal axial limiting devices. Aiming at the situation, if a common guide limit support is adopted, the horizontal load born by the support is small, the effect is poor, the requirement of restricting the horizontal load cannot be expected, and the safety problem of the pipeline and the equipment interface is brought with great hidden trouble.

Disclosure of Invention

The utility model aims at providing an axial is spacing reliable, can bear the axial stop device who is used for high temperature high pressure steam conduit in power plant of great horizontal load.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an axial stop device for high temperature high pressure steam pipe in power plant, including the staple bolt at steam pipe's the pipe clamp that carries that moves, the side that moves and carries the pipe clamp is provided with the door type that the rigid coupling civil engineering keeps off the frame, be equipped with the vacancy portion that supplies steam pipe to pass on this door type keeps off the frame, move and carry the axial spacing clearance that leaves steam pipe between pipe clamp and the door type fender frame, move and carry and be provided with the connecting piece between the steam pipe wall of pipe clamp and its side, move and carry and be provided with the buffer block on the face that the pipe clamp is close to door type fender frame one.

Due to the adoption of the technical scheme, the steam pipeline is arranged in the horizontal direction, the dynamic load pipe clamp is fixed on the steam pipeline, the dynamic load pipe clamp can be driven to move together when the steam pipeline generates axial movement, the buffer block is blocked after moving to the position abutting against the door-shaped baffle frame, and the steam pipeline can not move continuously, so that the axial limit of the steam pipeline is realized. The horizontal load born on the steam pipeline is also transmitted to the door-shaped blocking frame and then transmitted to the civil engineering on the side, so that the steam pipeline can bear the horizontal load in a large range, and the safety and the stability of the high-temperature and high-pressure steam pipeline in the power plant are effectively improved.

Drawings

Fig. 1 is a top view of the present invention;

fig. 2 is a right side view of the present invention.

Detailed Description

The utility model provides an axial stop device for high temperature high pressure steam pipe in power plant, including the staple bolt at steam pipe 10 move and carry pipe clamp 20, the side that moves and carries pipe clamp 20 is provided with the door type that the rigid coupling civil engineering keeps off the frame 30, be equipped with the vacancy portion that supplies steam pipe 10 to pass on this door type keeps off the frame 30, move and carry the axial spacing clearance that leaves steam pipe 10 between pipe clamp 20 and the door type fender frame 30, it is provided with connecting piece 21 to move between the steam pipe 10 pipe wall of carrying pipe clamp 20 and its side, it is provided with buffer block 22 to move on the face that carries pipe clamp 20 and be close to door type fender frame 30 one side. The connecting member 21 can increase the contact area between the dynamic load tube clamp 20 and the steam pipe 10, so that the two can be more reliably fixed. The door-shaped stop frame 30 is arranged on one side of the steam pipeline 10, which needs to be axially limited, and has the function of blocking the axial movement of the dynamic pipe clamp 20, and the axial limitation of the steam pipeline 10 can be realized due to the fact that the dynamic pipe clamp 20 and the steam pipeline 10 are fixed into a whole. The steam pipeline 10 is arranged along the horizontal direction, the dynamic load pipe clamp 20 is fixed on the steam pipeline 10, the dynamic load pipe clamp 20 is driven to move together when the steam pipeline 10 moves axially, the buffer block 22 is blocked after moving to the position abutting against the door-shaped stop frame 30, and the steam pipeline 10 cannot move any more, so that the axial limiting of the steam pipeline 10 is realized. Meanwhile, the horizontal load borne by the steam pipeline 10 is transferred to the door-shaped blocking frame 30 and then to the civil engineering beside the door-shaped blocking frame, so that the steam pipeline 10 can bear the horizontal load in a large range, and the safety and stability of the high-temperature and high-pressure steam pipeline in the power plant are effectively improved.

The connecting pieces 21 are arranged at intervals along the circumferential direction of the steam pipeline 10, and the connecting pieces 21 are preferably arranged in four and are arranged at even intervals along the circumferential direction of the steam pipeline 10. Preferably, the connecting members 21 are disposed between two sides of the movable hose clamp 20 and the wall of the steam pipeline 10, and four connecting members are disposed on each side. The structure can ensure that the stress of the steam pipeline 10 and the dynamic load pipe clamp 20 is uniform, the horizontal load can be uniformly transmitted to the door-shaped baffle frame 30, the local stress concentration is avoided, and the horizontal bearing capacity of the steam pipeline 10 is further improved.

The door-shaped blocking frame 30 is composed of two horizontal rods 31 arranged in parallel and a vertical rod 32 connected between the two horizontal rods 31, wherein the horizontal rods 31 are fixed on the existing column or embedded part a in the factory building, the lower end of the vertical rod 32 is fixed on the foundation, and the upper end of the vertical rod is fixed on the existing column or embedded part a in the factory building.

The two buffer blocks 22 are respectively arranged at the upper end and the lower end of the movable load pipe clamp 20, and the height positions of the two buffer blocks 22 correspond to the height positions of the two horizontal rods 31. As shown in fig. 1 and 2, the positions of the buffer block 22 correspond to the positions of the horizontal rods 31, and the horizontal rods 31 are used for obstructing the movement of the buffer block 22, so that the door-shaped blocking frame 30 can meet the use requirement by adopting the frame-type structure, the structure of the whole device is simplified, and the cost is saved. The buffer blocks 22 are respectively arranged at the upper end and the lower end of the dynamic load pipe clamp 20, so that the dynamic load pipe clamp 20 can be uniformly stressed, and the service life of the dynamic load pipe clamp is prolonged.

The buffer block 22 is wrapped with a polytetrafluoroethylene plate. Preferably, a teflon plate having a thickness of 4mm is used, and the teflon plate may be provided on the gate-type bezel 30. The polytetrafluoroethylene plate is arranged to play a role in buffering, the abrasion resistance is improved, the service life of the equipment is prolonged, and abnormal sound is avoided.

The axial limiting gap left between the dynamic load pipe clamp 20 and the door-shaped stop frame 30 is 210-220mm, and preferably 215 mm.

The connecting piece 21 is welded and fixed between the dynamic load pipe clamp 20 and the pipe wall of the steam pipe 10. The connection mode of welding fixation is higher in reliability and easy to construct.

Claims

1. The utility model provides an axial stop device that is used for high temperature high pressure steam pipeline in power plant which characterized in that: the clamp comprises a hoop and a movable pipe clamp (20) which is arranged on a steam pipeline (10) and fixedly connected with civil engineering, wherein a door-shaped blocking frame (30) is arranged beside the movable pipe clamp (20), an empty part for the steam pipeline (10) to pass through is arranged on the door-shaped blocking frame (30), an axial limiting gap of the steam pipeline (10) is reserved between the movable pipe clamp (20) and the door-shaped blocking frame (30), a connecting piece (21) is arranged between the movable pipe clamp (20) and the pipe wall of the steam pipeline (10) beside the movable pipe clamp, and a buffer block (22) is arranged on the plate surface of one side, close to the door-shaped blocking frame (30), of the movable pipe clamp (20).

2. The axial limiting device for high-temperature and high-pressure steam pipelines in power plants according to claim 1, wherein: the connecting pieces (21) are arranged at intervals along the circumferential direction of the steam pipeline (10).

3. The axial limiting device for high-temperature and high-pressure steam pipelines in power plants according to claim 2, wherein: the door-shaped blocking frame (30) is composed of two parallel horizontal rods (31) and a vertical rod (32) connected between the two horizontal rods (31), wherein the horizontal rods (31) are fixed on the existing column or embedded part a in the plant, the lower end of the vertical rod (32) is fixed on the foundation, and the upper end of the vertical rod is fixed on the existing column or embedded part a in the plant.

4. The axial limiting device for high-temperature and high-pressure steam pipelines in power plants according to claim 3, wherein: the two buffer blocks (22) are arranged and are respectively positioned at the upper end and the lower end of the movable load pipe clamp (20), and the height positions of the two buffer blocks (22) correspond to the height positions of the two horizontal rods (31).

5. The axial limiting device for high-temperature and high-pressure steam pipelines in power plants according to claim 4, wherein: the buffer block (22) is wrapped with a polytetrafluoroethylene plate.

6. The axial limiting device for high-temperature and high-pressure steam pipelines in power plants according to claim 5, wherein: the dynamic load pipe clamp (20) and the door-shaped stop

The axial spacing gap left between the frames (30) is 210-220 mm.

7. The axial limiting device for high-temperature and high-pressure steam pipelines in power plants according to claim 6, wherein: the connecting piece (21) is welded and fixed between the dynamic load pipe clamp (20) and the pipe wall of the steam pipeline (10).

8. The axial limiting device for high-temperature and high-pressure steam pipelines in power plants according to claim 7, wherein: the axial limiting gap reserved between the dynamic load pipe clamp (20) and the door type blocking frame (30) is 215 mm.