CN201561232U

CN201561232U - Residual powder-free wearproof three-dimensional compensator dedicated for powder feeding pipeline

Info

Publication number: CN201561232U
Application number: CN200920033853XU
Authority: CN
Inventors: 不公告发明人
Original assignee: XI'AN TIANDA ENERGY EQUIPMENT TECHNOLOGY Co Ltd
Current assignee: XI'AN TIANDA ENERGY EQUIPMENT TECHNOLOGY Co Ltd
Priority date: 2009-07-10
Filing date: 2009-07-10
Publication date: 2010-08-25
Anticipated expiration: 2019-07-10

Abstract

The utility model relates to a residual powder-free wearproof three-dimensional compensator which is dedicated for a powder feeding pipeline for absorbing large transversal displacement generated by boiler settlement and axial displacement generated by thermal expansion and cold contraction of pipelines, mainly comprising an adapter, a corrugated pipe, a sealing ring, a guide cylinder and the like. Through using two corrugated pipe compensating elements and a middle adapter for realizing axial and large transversal compensation, having excellent wearproofness and sealability caused by optimized structure, and solving problems of wearing wind leakage and residual powder, the utility model has the characteristics of reasonable structure, continuous wearproofness, no powder leakage, no residual powder, small rigidity and large transversal compensator capability.

Description

The wear-resisting three-dimensional compensator of the special-purpose no accumulated powder of powder feeding pipes

Affiliated technical field

The utility model relates to a kind of thermal power plant and is installed on the powder feeding pipes, is used for absorbing the expand with heat and contract with cold wear-resisting three-dimensional compensator of the special-purpose no accumulated powder of powder feeding pipes of the axial displacement that produced of big lateral displacement that the boiler sedimentation produced and pipeline.

Background technique

Heat power plant boiler is when hot operating mode, can produce expand (fixed end of boiler is at the top) downwards owing to be heated, and powder feeding pipes one end is connected with boiler-burner, the other end links to each other with rigid support, if the middle sedimentation that does not have equipment to absorb boiler, cause damage will for the burner of powder feeding pipes or boiler, three-dimensional compensator a kind of device that can absorb the boiler sedimentation that comes to this, present three-dimensional compensator form is a lot, the industry and the system that use are also a lot, but really can be used for the boiler powder feeding pipes, guarantee the few of safe and economical boiler operation, mainly have following defective and deficiency: working life is short, when mounted between not length the worn out leakage powder of Taper Pipe will appear; Easy accumulated powder between guide shell and the bellows; The compensator lateral stiffness is big, causes the damage of burner easily.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, thereby provides a kind of rational in infrastructure, continue wear-resisting, do not leak powder, accumulated powder not, rigidity is little, laterally the compensator ability is big, the wear-resisting three-dimensional compensator of the special-purpose no accumulated powder of practical powder feeding pipes easy for installation.

The technical solution of the utility model is achieved in that

This is practical finishes the expand with heat and contract with cold absorption of the axial displacement that produced of the lateral displacement of boiler sedimentation generation and pipeline by being made up by two sections stainless metal bellowss (2) and middle adapter (4), metal bellows (2) is by the whole shaped by fluid pressure of two layers of thin stainless steel pipe, it is big to have single ripple compensation rate, the characteristics that rigidity is little; The optimization of structure makes guide shell (7) can adopt the rare earth Wear Resisting Steel to make, and thickness is 40mm, has wear resistance preferably; Insert stuffing box packing (5) in the cavity that forms between inlet connection (1), discharge connection (8) and the guide shell (7), and be provided with seal ring (6), can stop coal dust to enter the inside of compensator effectively at jointing.

Description of drawings

Fig. 1 is the utility model structural representation

Fig. 2 is that the utility model A is to view

Embodiment

Following the utility model will be further detailed its detail and working condition in conjunction with the accompanying drawings:

This practical inlet connection (1) that comprises, bellows (2) connects end ring (3), middle adapter (4), stuffing box packing (5), seal ring (6), guide shell (7) and discharge connection (8) are formed.Inlet connection (1), a guide shell (7), a bellows (2) is welded to connect by two connection end ring (3) forms first compensator element, another part guide shell (7), another part bellows (2) is connected end ring (3) with discharge connection (8) by two and is welded to connect another part compensator element of composition, these two compensator element have only the ability of compensator axial displacement, have only by middle adapter (4) two compensator element are connected as one, just can become can compensator axial displacement, three-dimensional compensator that again can the compensate for lateral displacement, under the situation that two compensator element structures are determined, the horizontal compensation rate of compensator within the specific limits with the length of middle adapter relation in direct ratio.This practical advantage can increase the wear resistance of compensator by adopting wear-resisting material and increasing guide shell (7) thickness, prolong the working life of compensator greatly, add the special sealing configuration of seal ring (6) simultaneously by stuffing box packing (5), effectively guarantee compensator accumulated powder not in use.

This practical metal bellows (2) is by the whole shaped by fluid pressure of two layers of thin stainless steel pipe, and it is big to have single ripple compensation rate, and the characteristics that rigidity is little have reduced the damage of compensator rigidity counter-force to burner effectively.

This practical employing with being connected of system pipeline is welded to connect, and welding is for convenience reserved bevel for welding by relevant criterion before the product export.

Claims

1. one kind is installed on the powder feeding pipes of thermal power plant, be used for absorbing the expand with heat and contract with cold wear-resisting three-dimensional compensator of the special-purpose no accumulated powder of powder feeding pipes of the axial displacement that produced of big lateral displacement that the boiler sedimentation produced and pipeline, by inlet connection (1), bellows (2), connect end ring (3), middle adapter (4), stuffing box packing (5), seal ring (6), guide shell (7) and discharge connection (8) are formed, it is characterized in that inlet connection (1), insert stuffing box packing (5) in the cavity that forms between discharge connection (8) and the guide shell (7), and carry out shutoff with seal ring (6).

2. the wear-resisting three-dimensional compensator of the special-purpose no accumulated powder of powder feeding pipes according to claim 1 is characterized in that metal bellows (2) is by the whole shaped by fluid pressure of two layers of thin stainless steel pipe.