CN2265468Y

CN2265468Y - Large wave-shape expansion compensator

Info

Publication number: CN2265468Y
Application number: CN 96244090
Authority: CN
Inventors: 陈行远; 林德恩; 李印昌
Original assignee: Individual
Current assignee: Lin Deen
Priority date: 1996-11-18
Filing date: 1996-11-18
Publication date: 1997-10-22
Anticipated expiration: 2006-11-18

Abstract

The utility model belongs to heating power equipment and corollary equipment for pipe devices, composed of a plurality of wave-shaped expansion joints, a guide plate, a protective device and a connection plate. A weld bead is arranged in the middle of every other two wave-shaped expansion joints; each wave-shaped expansion joint of a circular compensator is provided with only one weld bead, and four angles of a quadrate or a rectangular compensator are all in a circular arc shape, and both sides of each angle are respectively provided with a weld bead. The wave-shaped expansion joints of the utility model have fluent lines and good elasticity, and can be produced by flow production line, so that the efficiency can be increased hundredfold, and the fraction defective for once can be decreased to lower than 0.5%.

Description

Large-scale waveform expansion appliance

The utility model belongs to the corollary equipment on heat power equipment and the piping facility, especially for chemical industry, and metallurgy, electric power, cement, the expansion that food etc. are industrial, shrinkage elastic compensating device.

Expansion appliance is an indispensable equipment in the development of the national economy.The various large-scale expansion appliance of Xiao Shouing nearly all is to operate by hand in the market, utilizes butt welding method to produce.The shortcoming of these products: weld seam is many.For example: the circular expander compensator, its diameter surpasses 1.2 meters, then needs 12 or 16 to be welded into a node.When equipment need compensation rate to arrive 60 millimeters the time, need four node at least.Those petty these four node then need be formed by 48 or 64 weldings.The sheet number is many more, and weld seam is many more, and quality just can not get guaranteeing that product cost is high more more.Another shortcoming is that design is unreasonable.For example: rectangle and square expansion appliance, its four jiaos are adopted butt joint to be welded into 90 degree, this design, stress is concentrated, and breaks easily.

Defectives such as the purpose of this utility model is that a kind of waveform expansion appliance will be provided, and it is many that it can overcome weld seam, and stress is concentrated, thereby the life-span of improving expansion appliance.

The purpose of this utility model is achieved in that by some corrugated-type expansion joints and guide plate, the model utility that protective gear and connecting plate are formed, and it has a weld seam in the middle of two swollen joints that rise of waveform; Four angles of the expansion appliance of its square or rectangle are circular arc, on the both sides of an angle of 90 degrees a weld seam are arranged respectively.

The lines flow smoothly for corrugated-type expansion joint of the present utility model, and elasticity is rather good, and can be by production-lines production, then efficient improves more than hundred times, disposable disqualification rate is reduced to below 0.5%, through national ferrous materials test center fatigue life test, 4,000 flawlesses.

Fig. 1 is the plan view of the circular compensator of the utility model.

Fig. 2 is the plan view of the circular compensator of the utility model.

Fig. 3 is the plan view of the utility model rectangle compensator.

Fig. 4 is the plan view of the utility model rectangle compensator.

Fig. 5 is a sectional view of the present utility model.

Below in conjunction with accompanying drawing the utility model is elaborated.

As shown in Figure 1, by the waveform expansion appliance that some corrugated-type expansion joints (1) are welded into, it has one weld seam (7) in the middle of two corrugated-type expansion joints (1).Each circular expander joint (1) is to adopt the single forming processes, no matter its diameter is much, just has only a weld seam (8).Connecting plate (4) links together compensator and heat power equipment, and when equipment was heated, itself expanded, and compressed waveform expansion joint (1), make device location constant substantially, when equipment is caught a cold when dwindling, corrugated-type expansion joint (1) then is stretched, and device location is remained unchanged substantially.

As Fig. 1, shown in Figure 2, protective gear (3) is contained in the outside of corrugated-type expansion joint (1), is fixed together with connecting plate (4).It can limit the expansion of corrugated-type expansion joint, makes it be no more than maximum permissible value, thereby protection expansion joint (1) is not destroyed, and equipment can normally be moved.

As Fig. 3, shown in Figure 4, the node of rectangle or square expansion appliance has changed four jiaos of straight line butt joints and has been welded into 90 mode, and four angles are designed to the angle (5) of circular arc, and respectively there is a weld seam (6) on its both sides of 90 jiaos.Design can be eliminated 90 jiaos of stress of locating and concentrate the working life of raising compensator like this.

As shown in Figure 5, guide plate (2) one ends and node weldering are dead, and the other end does not weld.Medium flows into expansion appliance from welding a dead end, owing to have guide plate (2) keeping off, so it can not flow in the node basically.To form the possibility of eddy current in node very little for medium like this, just avoided the impact endurance test shock generation, and increased the intensity of node.

The utility model can be done circular, and is oval and polygonal; Can be according to the needs of compensation rate size, the wave height of node is designed to from 75mm to 400mm; Also can be according to the needs of instrument size, the diameter of circular compensator is designed to from 0.4m to 20m; Polygonal, its section can be from 0.4m ²To 100m ²

Claims

1. a waveform expansion appliance is characterized in that it is by some corrugated-type expansion joints, guide plate, and protective gear and connecting plate are formed, and it has a weld seam in the middle of two corrugated-type expansion joints; Has only a weld seam on each corrugated-type expansion joint of the expansion appliance that it is circular; Its four angles square or the rectangle expansion appliance all are circular arc, and respectively there is a weld seam on the both sides at each angle.