CN2325615Y

CN2325615Y - Self-balance sleeve type expansion-compensation arrangement

Info

Publication number: CN2325615Y
Application number: CN 98235639
Authority: CN
Inventors: 陈述增
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-21
Filing date: 1998-04-21
Publication date: 1999-06-23
Anticipated expiration: 2008-04-21

Abstract

The utility model relates to a self-balance sleeve pipe type expansion-compensation arrangement, mainly composed of expansion pipes and outer sleeve pipes. The expansion pipe is one or two crossed and communicated straight pipe sections with an open end, a closed end and an open middle part, the expansion pipe is integrally sealed and sheathed with a corresponding outer sleeve pipe, and the opening of the outer sleeve pipe is arranged on an expansion pipe side wall. The utility model not only can satisfy the compensation the axial length changes of a pipeline, but also can completely eliminate blind plate forces which are produced by medium in pipes; the utility model has the advantages that the small size of shape is only 2/3 of existing products, the metal consumption can be decreased by 1/2; the utility model has low cost and the functions of compensators, and can also replace elbow pipes and three-way components in a pipe network.

Description

The self balancing sleeve compensator

The utility model relates to a kind of compensator, relate in particular to and a kind ofly be used for compensating the long change amount of the pipeline axial that in pipe network, causes and eliminate the blind plate power that produces because of pressure medium in managing, thereby weaken the sleeve compensator of pipeline the stress that fixed support produced because of temperature variation.

Existing balanced type sleeve compensator has two kinds, the first is connected in series with an ordinary casing compensator and is combined by the counter balance pocket of a band piston, another kind is that two ends have the telescopic pipe of adorning one one end sealing, intermediate openings in the outer sleeve of stuffing box packing and several bypass tube that outer sleeve is communicated with rear tube to form, and these two kinds of balanced type sleeve compensators are in engineering design and in servicely have a following problem:

1, piston balanced type compensator structure complexity, boundary dimension and metal consumption are all big, involve great expense, manufacturing difficulty height, require compensator in the installation and import and export institute's connecting tube concentricity strictness, therefore, must increase the support of compensator, each compensator needs two supports at least, so strengthen capital investment; Because the compensator structure design must have the three seals filler, its filler friction area is 4 times of common unidirectional sleeve compensator, thereby causes the friction stress of compensator nature very big, has strengthened support bracket fastened load; Same because structural design, this compensator can only use between two fixed supports, and compensator itself has many pull bars, and complex contour makes that heat insulation work is difficult to carry out; In addition, because the warp-wise size of piston cavity is about 4 times that compensator stimulates the menstrual flow, the axial centre spacing was very wide when therefore two pipes were parallel, thereby the cost of pipe trench direct-burried groove and pipe support is increased.

2, bypass sleeve pipe balanced type compensator is twice except stuffing box packing, and its friction area is 2 times of common unidirectional sleeve compensator.

The purpose of this utility model provides a kind of compensation that both can satisfy the pipeline axial length change that causes because of temperature variation, can eliminate simultaneously the blind plate power that pressure medium is produced in the pipe again fully, can also substitute other parts in the pipe network, external dimension are little, metal consumption is low, engineering cost is low, easy for installation, self balancing sleeve compensator fast.

The technical solution of the utility model realizes in the following manner:

A kind of self balancing sleeve compensator, it mainly is made up of telescopic pipe and outer sleeve, telescopic pipe is one or two intersections communicate, the one end opens wide, the straight length of the other end sealing, middle opening, and it is one that telescopic pipe seals suit with pairing outer sleeve, and the outer sleeve opening is located on the sidewall.

The stuffing box packing sealing is arranged between telescopic pipe and the outer sleeve.

Good effect of the present utility model is:

1, not only can satisfy the compensation of the pipeline axial length change that causes because of temperature variation, also eliminate the blind plate power that pressure medium is produced in the pipe simultaneously fully.

2, boundary dimension is little, it only is 2/3 of existing product, metal consumption reduces can reach 1/2, stuffing box packing has only twice, the essential piston weighing apparatus chamber that relies on of existing product, bypass tube, fixtures such as rear tube could be realized the blind plate equilibrium of forces, and the utility model does not add any fixture, only depend on compensator in, outer tube has just been realized the function of compensation and balance blind plate power, therefore compare its structure and working principle in using with existing product simpler, in the application compensator is imported and exported the no requirement (NR) of pipeline axial concentricity, each compensator need only a support, and cost reduces greatly.

3, be widely used, not only have a compensator function, can also substitute bend pipe and threeway parts in the pipe network, when the pipeline corner needs only the work that a compensator with two square crossing telescopic pipes has just been finished the compensation of satisfying mutually perpendicular both direction pipeline simultaneously and eliminated orthogonal both direction pipeline blind plate power that on the corner is provided with when axially vertical both direction all need compensate, only need to load onto that the utility model substitutes bend pipe and threeway can be eliminated all blind plate power ideally in all less than the pipe network of 200mm at each corner of pipe network and diversion three-way place at every section straight length, can satisfy the compensation demand of pipe network again, simplified design, save parts, reduce engineering cost.

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1 for use at present by band piston counter balance pocket be connected in series with ordinary casing form compensator partly cut open structural representation;

Fig. 2 partly cuts open structural representation for what use at present by end sealing, the telescopic pipe of intermediate openings and the compensator that several bypass tube is formed;

Fig. 3 for telescopic pipe of the present utility model be one compensator partly cut open structural representation;

Fig. 4 is one for telescopic pipe of the present utility model, the compensator of the outer sleeve of two sides opening partly cut open structural representation;

Fig. 5 for telescopic pipe of the present utility model be two intersections communicate partly cut open structural representation;

As seen from Figure 3, the utility model is made up of telescopic pipe 1 and outer sleeve 2, and telescopic pipe 1 is one, and the one end opens wide, the straight length of the other end sealing middle opening, and telescopic pipe 1 is an one with pairing outer sleeve 2 sealing suits.Between telescopic pipe 1 and the outer sleeve 2 two seals filler 4 is arranged, stuffing box packing 4 one ends are by base ring 3 block, and the other end is by compressing filler device 5 block, and outer sleeve 2 openings are positioned on the sidewall; The utility model can be contained in the corner in the pipe network and play the elbow effect.

As seen from Figure 4, its structure is similar substantially to Fig. 3, is the outer sleeve both-side opening, and the infall that the utility model can be contained in the pipe network is done the threeway use.

As seen from Figure 5, its structure is similar substantially to Fig. 3, Fig. 4, the telescopic pipe 1 that it has two intersections to communicate, can carry out relative movement is with outer sleeve 2 corresponding with it and that be connected as a single entity outside the telescopic pipe 1, the elbow use is done in the corner that the utility model can be used in the pipe network.

Claims

1, a kind of self balancing sleeve compensator, it mainly is made up of telescopic pipe (1) and outer sleeve (2), it is characterized in that telescopic pipe (1) is one or two intersections communicate, the one end opens wide, the straight length of the other end sealing, middle opening, telescopic pipe (1) is an one with pairing outer sleeve (2) sealing suit, and outer sleeve (2) opening is located on the sidewall.

2, balancing sleeve compensator according to claim 1 is characterized in that having between telescopic pipe (1) and the outer sleeve (2) stuffing box packing (4) sealing.