CN2392067Y

CN2392067Y - Inflated rubber ball for blocking pipeline

Info

Publication number: CN2392067Y
Application number: CN99229500U
Authority: CN
Inventors: 朱津祥; 周立华
Original assignee: Cailing Special Rubber & Plast
Current assignee: Cailing Special Rubber & Plast
Priority date: 1999-09-24
Filing date: 1999-09-24
Publication date: 2000-08-16
Anticipated expiration: 2009-09-24

Abstract

The utility model relates to an inflated rubber ball plug for pipeline, which belongs to the temporary blocking plugs for testing leakage, maintenance and construction of city water supply and drainage pipeline and transmission pipeline of petroleum and chemical industry. The plug is composed of an elliptical spherical body, metal flange sealing heads which are arranged on both ends of the elliptical spherical body, draw rings on the sealing heads, an air inlet on the sealing heads and an air outlet on the sealing heads. The elliptical spherical body is composed of an inner rubber layer, an outer rubber layer, and a cord thread reinforced layer having the layer number which is less than five is between the inner rubber layer and the outer rubber layer. The air inlet and the air outlet on the elliptical spherical body are connected with an air compressor through an inflated guiding tube with an air pressure control device, and the draw rings of the elliptical spherical body are connected with pulling ropes. The utility model has the advantages of good sealing performance and high intensity of the spherical body. The plug can bear 0.3 MPa air pressure, and the swell increment of the plug can reach 1.5 to 2.5 times.

Description

Pipeline inflating rubber bulb stopper

The utility model relates to a kind of pipeline inflating rubber bulb stopper, belongs to the interim shutoff stopper of urban water supply and sewerage pipeline and oil, chemical industry conveyance conduit, maintenance and construction.

The pipeline construction leak test inspection of underground water supply and sewerage pipeline of burying underground in city and concealment part thereof or the pipeline breaking and the seepage maintenance construction known method commonly used that cause because of a variety of causes are to adopt the stopper and the interim shutoff mouth of pipe of structural material, prevent the loss of the water or the chemical pipeline fluid of pipe-line system, it is long that but said method exists the time, feed consumption is many, also has the trouble of removing, the very problem such as inconvenience of constructing, the interim shutoff of also useful canvas bulb stopper, but because of its no expansion coefficient, less with the tube contacts face, and easily gas leakage, be difficult to use, the said method plugging effect is all undesirable.

That China utility model patent CN2058489U discloses is a kind of " drainage pipe pour water leak test inflatable gallbladder plug ", can expand after this patent inflation, but because its glue-line is thin, lacking framework layer supports, the pressure that bears is little, and diameter expansion is little, and application area only limits to the pipeline approximate with inflatable gallbladder plug diameter, and it is also very little to bear the pressure that blocks liquid, and its application area is narrow.

The purpose of this utility model is to avoid prior art the problems referred to above and provide that a kind of swell increment is big, intensity is high, the pipeline inflating rubber bulb stopper of good seal performance.

The purpose of this utility model reaches by following technical measures.

The utility model includes air compressor, one oval-shaped ball two ends have the metal flange end socket, be respectively equipped with draw ring on this metal flange end socket, one metal flange end socket is provided with inlet, outlet, and oval-shaped ball is made up of the cord framework layer between outer rubber layer, inner rubber layer and the inside and outside rubber layer.

The inflating catheter of inlet, outlet on the oval-shaped ball through having Pneumatic controller is connected with air compressor, is connected with tow rope on its draw ring.

Oval-shaped ball is placed the pipeline that needs leak test inspection and maintenance construction, and oval-shaped ball is filled with air, and oval-shaped ball contacts from line with inner-walls of duct becomes the face contact gradually, thus the flow of fluid in the blocking pipe.

Compared with the prior art the utility model has following advantage:

1, oval-shaped ball of the present utility model two ends adopt metal flange as end socket, good seal performance.

2, the utility model oval-shaped ball adopts inside and outside rubber layer, be provided with the line framework layer between the inside and outside rubber layer, increased the intensity of spheroid greatly, can bear the air pressure of 0.30Mpa, its swell increment can reach 1.5～2.5 times, so the utility model of a kind of specification can use with interior various pipelines for its nominal diameter twice.

The explanation of accompanying drawing drawing:

Fig. 1 is the utility model structural representation and user mode figure.

Following the utility model will describe in detail embodiment (in conjunction with the accompanying drawings).

The utility model shown in Figure 1 includes air compressor 4, one oval-shaped ball, 7 two ends have metal flange end socket (6 and 11), be respectively equipped with draw ring (12 and 5) on the blue end socket of this metal dusting (6 and 11), metal flange end socket 11 is provided with inlet, outlet 13, and the cord framework layer 9 between the outer rubber layer 8 that oval-shaped ball 7 is made by natural rubber, synthetic rubber and other elastic material, inner rubber layer 10 and the interior outer rubber layer (8 and 10) is formed.

The inflating catheter 2 of inlet, outlet 13 on the oval-shaped ball end socket 11 through having Pneumatic controller 3 is connected with air compressor 4, is connected with tow rope 1 on its draw ring 12.

Use when implementing, oval-shaped ball 11 is put into construction or detected the position that pipeline 14 needs shutoff, oval-shaped ball 11 according to the selection for pipeline Applicable scope of different size, open air compressor 4, by Pneumatic controller 3 control air pressure, be typically chosen between 0.04～0.20Mpa, oval-shaped ball 11 diameters are expanded gradually, contact from line with pipeline 14 and to transfer face contact gradually to, reach the purpose of pipeline 14 shutoff blocking solutions.Construction operation is finished, and discharges oval-shaped ball internal pressure air, and it is pulled out pipeline 14, can recover the pipeline original state.

Claims

1, a kind of pipeline inflating rubber bulb stopper includes air compressor [4], it is characterized in that:

A) oval-shaped ball [7] two ends have metal flange end socket [6 and 11], be respectively equipped with draw ring [12 and 5] on this metal flange end socket [6 and 11], metal flange end socket [11] is provided with inlet, outlet [13], described oval-shaped ball [7] is made up of the cord framework layer [9] below five layers between outer rubber layer [8], inner rubber layer [10] and the inside and outside rubber layer [8 and 10]

B) inflating catheter [2] of the inlet, outlet [13] on the oval-shaped ball end socket [11] through having Pneumatic controller [3] is connected with air compressor [4], is connected with tow rope [1] on its draw ring [12].