CN203517135U

CN203517135U - Steam pipeline compensator

Info

Publication number: CN203517135U
Application number: CN201320554797.0U
Authority: CN
Inventors: 赵铎
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-09-08
Filing date: 2013-09-08
Publication date: 2014-04-02
Anticipated expiration: 2023-09-08

Abstract

The utility model relates to a steam pipeline compensator. The steam pipeline compensator comprises an outer sleeve and a core cylinder, wherein a pulling-preventing ring is arranged at the sleeved end of the core cylinder, an inner baffle ring is arranged on the inner wall of the outer sleeve, and corresponds to the pulling-preventing ring, the core cylinder is sleeved with a spacer ring, holes are formed in the outer wall of the spacer ring, an annular main packing seal box is formed between the spacer ring and the inner baffle ring, a gland is fixed to the right end of the outer sleeve, the core cylinder is sleeved with the gland, and an annular auxiliary packing seal box is formed between the spacer ring and the gland. The steam pipeline compensator is characterized in that a hole is formed in the portion, corresponding to a cavity, of the outer wall of the outer sleeve, a material storage tank is connected to the hole in a sealing mode, and the material storage tank is filled with low-melting metal or low-melting alloy, wherein the melting point of the metal or the alloy is lower than 90DEG C. The steam pipeline compensator has the advantages that the advantages of an underground maintainable sleeve compensator are kept, and the phenomenon that steam leaks out of a compensator is completely eradicated.

Description

Steam pipeline compensator

Technical field

The utility model is related to a kind of steam pipeline compensator, belongs to pipeline compensator field.

Background technology

Pipeline compensator is mainly solution pipeline and expanded with heat and contract with cold caused by temperature change problem, eliminates pipeline internal stress, pipe network is kept good operating mode.At present, the compensation way of steam pipeline compensator mainly has three kinds of forms：One is natural compensation, and two be metal bellows compensation, and three be sleeve expansion joint compensation.All there is certain deficiency in three of the above compensation way.Natural compensation refers in jet chimney installation process, sets every certain spacing that a " u "-shaped is curved, Z-shaped is curved on straight section pipeline, or " L " shape is curved, and the cold and hot compensation of pipeline is realized using the elastic deformation of pipeline.Its advantage is：Durable, not leakiness vapour, bearing capacity is high；It has the disadvantage：Space-consuming is larger, investment is big, compensation rate is small.Metal bellows compensation is to set one section of metal bellows every certain spacing on the straight section pipeline of jet chimney, and its advantage is：Occupy little space, vapour is not leaked in its fatigue range；It has the disadvantage：Bearing capacity is low, and because the temperature fluctuation of most jet chimneys is big, the flexible of pipeline often frequently acts the fatigue for easily causing bellows, is greatly lowered its service life.Sleeve expansion joint compensation advantage be：Compensation rate is big, occupy little space, bearing capacity is high；Have the disadvantage：Can not safeguard, easy leakage vapour in use, maintenance load is big, is rarely employed now.For above-mentioned the deficiencies in the prior art, the applicant once devises buried maintainable sleev compensator, the patent No. on the basis of sleeve expansion joint：2004101010242, it includes outer sleeve and core cylinder, twice packing seal letter is provided between outer sleeve and core cylinder, the steam in pipeline is sealed with graphite packing, and after the buried use of compensator, can observe whether compensator there are media leaks on the ground, and mending-leakage measure can be implemented on the ground, the operational reliability of compensator is not only greatly increased, the service life of compensator is also extended, the maintenance cost of pipe network is reduced.But the technology can not prevent the generation that compensator leaks vapour phenomenon.

The content of the invention

The purpose of this utility model is to provide a kind of steam pipeline compensator for the generation that can prevent compensator leakage vapour phenomenon for buried maintainable sleev compensator.

In order to solve the above technical problems, the utility model provides following technical scheme：

Steam pipeline compensator of the present utility model, including outer sleeve and core cylinder, at the end of being inserted in of core cylinder ring is pulled out provided with anti-, it is provided with the inwall of outer sleeve and pulls out the corresponding inner baffle ring of ring with anti-, spacer ring with holes on outer wall is cased with core cylinder, the main packing seal letter of ring-type is formd between spacer ring and inner baffle ring, the gland for covering core cylinder is fixed with the right-hand member of outer sleeve, the auxiliary packing seal letter of ring-type is formd between spacer ring and gland, it is characterized in that：Perforate and it is tightly connected in perforate in a storage tank, storage tank on the outer wall corresponding with empty room of outer sleeve and is less than 90 DEG C of low-melting-point metal or alloy equipped with fusing point.

The utility model has the advantages that：The advantage of buried maintainable sleev compensator is maintained, and has prevented the generation that compensator leaks vapour phenomenon.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Embodiment

Referring to the drawings, the utility model includes outer sleeve 1 and core cylinder 2, at the end of being inserted in of core cylinder ring 6 is pulled out provided with anti-, it is provided with the inwall of outer sleeve and pulls out the corresponding inner baffle ring 4 of ring with anti-, spacer ring 5 with holes on outer wall is cased with core cylinder, the main packing seal letter 7 of ring-type is formd between spacer ring and inner baffle ring, graphite grazing filler is housed in main packing seal letter, the gland 3 for covering core cylinder is fixed with the right-hand member of outer sleeve, the auxiliary packing seal letter 8 of ring-type is formd between spacer ring and gland, graphite grazing filler is housed in auxiliary packing seal letter, perforate and a storage tank 9 is tightly connected in perforate on the outer wall corresponding with spacer ring of outer sleeve, low-melting-point metal or alloy in storage tank equipped with fusing point less than 90 DEG C.The low-melting alloy, refers to that fusing point is less than the fusible alloy of 232 DEG C (Sn fusing point)；Generally it is made up of the low-melting-point metal element such as Bi, Sn, Pb, In.Low-melting alloy includes 47 DEG C of low-melting alloys, 50 DEG C of low-melting alloys, 55 DEG C of low-melting alloys, 60 DEG C of low-melting alloys, 70 DEG C of low-melting alloys, 92 DEG C of low-melting alloys, 120 DEG C of low-melting alloys, 138 DEG C of low-melting alloys, 180 DEG C of low-melting alloys etc., the low-melting alloy that the utility model is selected is the low-melting alloy or metal that fusing point is less than 90 DEG C, especially normal temperature liquid metal, such as：Liquid metal under the normal temperature of Chinese Academy of Sciences's production.

Using when, after compensator is connected with pipeline, storage tank is located at the top of compensator outer sleeve, and tank mouth is downward.When stored in storage tank be the compensator low-melting-point metal of solid-state when, as long as the vapor (steam) temperature in pipeline is reached after the fusing point of low-melting-point metal, low-melting-point metal is just molten into liquid, liquid metal is flowed on spacer ring under gravity to be flowed by the hole on spacer ring again, all gaps between spacer ring and outer sleeve and core cylinder are completely filled out, make isolation is fully sealed between winner's packing seal letter and auxiliary packing seal letter, if what is stored in storage tank is the liquid metal under normal temperature, the gap around the directly dirty filling spacer ring of liquid metal；It will be moved up and get into storage tank 9 by the stop of liquid metal when steam penetrates the sealing of sealed letter, when steam pressure reaches balance in the pressure and pipeline in storage tank, the pressure of liquid metal around spacer ring will be more than the steam pressure in pipeline, so it is prevented that steam is to exosmosis, so as to ensure that compensator does not leak steam.

Claims

1. a kind of steam pipeline compensator, including outer sleeve and core cylinder, at the end of being inserted in of core cylinder ring is pulled out provided with anti-, it is provided with the inwall of outer sleeve and pulls out the corresponding inner baffle ring of ring with anti-, spacer ring with holes on outer wall is cased with core cylinder, the main packing seal letter of ring-type is formd between spacer ring and inner baffle ring, the gland for covering core cylinder is fixed with the right-hand member of outer sleeve, the auxiliary packing seal letter of ring-type is formd between spacer ring and gland, it is characterized in that：Perforate and it is tightly connected in perforate in a storage tank, storage tank on the outer wall corresponding with empty room of outer sleeve and is less than 90 DEG C of low-melting-point metal or alloy equipped with fusing point.