CN105864557B - A connection structure for pipes with water - Google Patents

Abstract

The invention discloses a connection structure of a pipeline with water, which comprises an old pipeline and a new pipeline with the same pipe diameter, a first-stage blocking air bag arranged in the old pipeline and adjacent to the connection end, arranged in the old pipeline and located at the connection The second-level sealing water retaining plate between the end and the first-level sealing air bag, and the connecting piece; the connecting piece is a steel pipe with an inner diameter larger than the outer diameter of the connecting pipe, and a steel pipe fixedly connected to the inner wall of the steel pipe is arranged in the middle of the steel pipe. Ring, the inner diameter of the steel ring is smaller than the outer diameter of the connecting pipe and larger than the inner diameter of the connecting pipe, and the annular gaps between the connecting piece and the old pipe and the new pipe are sealed and connected by packing. The first-level sealing air bag and the second-level sealing water retaining plate of the present invention can effectively block the water in the old pipeline and greatly reduce the displacement; The new and old pipes are quickly connected to realize the connection of new and old pipes with water. The invention has simple structure and convenient installation and connection.

Description

A connection structure for pipes with water

technical field

The invention relates to the field of pipeline connection, in particular to a water-carrying pipeline connection structure.

Background technique

At present, most domestic waterworks need to increase the advanced treatment process, and the addition of new processes will inevitably involve the connection of new and old process pipelines. Most of the valves involved in the old pipelines cannot be completely closed, and the short-term connection with water will occur frequently in the reconstruction and expansion projects, but the connection technology of the pipeline with water has not been reported in the relevant literature.

Contents of the invention

The technical problem to be solved by the present invention is to provide a connection structure for pipelines with water, which adopts a first-level and second-level double-layer sealing structure to effectively block the water in the old pipeline, so as to quickly realize the connection of new pipelines.

Technical scheme of the present invention is:

A connection structure for pipelines with water, including old pipelines and new pipelines with the same diameter, a first-stage blocking air bag arranged in the old pipeline and adjacent to the connection end, and arranged in the old pipeline and located at the connection end and the first-level The secondary blocking water retaining plate between the sealing airbags, and the connecting piece; the secondary sealing water retaining plate includes a telescopic support rod, a semicircular water retaining plate body and a rubber water stop ring, so The inner end of the telescopic support rod is fixedly connected to the middle of the diameter of the semicircular water retaining plate, the outer end of the telescopic support rod is in contact with the inner wall of the old pipeline, and the rubber water stop ring is fixedly connected to the semicircular on the semi-circular arc of the shaped water retaining plate body and against the inner wall of the old pipeline; the said docking piece is a steel pipe with an inner diameter larger than the outer diameter of the docked pipeline; steel ring, the inner diameter of the steel ring is smaller than the outer diameter of the connecting pipe and larger than the inner diameter of the connecting pipe, and the annular gaps between the connecting parts and the old pipe and the new pipe are sealed and connected by packing .

The old pipeline is provided with a drain pump between the first-level sealing air bag and the second-level sealing water retaining plate, and the new pipeline is provided with a drain near the connection end, and the semicircular water retaining plate is The body is provided with a through hole, and the drain pipe of the drainage pump extends out of the new pipe through the through hole and the drain of the secondary blocking water retaining plate in turn.

Advantages of the present invention:

The first-level sealing air bag and the second-level sealing water retaining plate of the present invention can effectively block the water in the old pipeline and greatly reduce the displacement; The new and old pipes are quickly connected to realize the connection of new and old pipes with water; the steel ring of the connection piece of the present invention serves the purpose of positioning the old and new pipes and preventing the overflow of the opening material from the opposite end of the opening; the primary seal of the present invention After the air plug is blocked, the remaining water is discharged from the drain port through the drain pump, which is convenient for subsequent docking treatment.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a schematic structural view of the second-stage plugging water retaining plate of the present invention.

detailed description

A pipe connection structure with water, comprising an old pipe 1 with the same pipe diameter, a new pipe 2, a first-stage blocking air bag 3 arranged in the old pipe 1 and adjacent to the connection end, arranged in the old pipe 1 and located at the barge The secondary blockage water retaining plate 4 between the connection end and the primary blockage air bag 3, the drainage pump 5 arranged in the old pipeline 1 and between the primary block air bag 3 and the secondary blockage water retaining plate 4 , and the connection piece 6; the new pipeline 2 is provided with a drain 7 adjacent to the connection end; the secondary sealing water retaining plate 4 includes a telescopic support rod 41, a semicircular water retaining plate body 42 and a rubber water stop ring 43 , the semicircular water retaining plate body 42 is provided with a through hole 44, and the drain pipe of the drainage pump 5 extends into the outside of the new pipeline 2 through the through hole 44 and the drain port 7 of the secondary blocking water retaining plate in turn, and the telescopic support The inner end of the rod 41 is fixedly connected to the middle part of the diameter of the semicircular water retaining plate body 42, the outer end of the telescopic support rod 41 is in contact with the inner wall of the old pipeline 1, and the rubber water stop ring 43 is fixedly connected to the semicircular water retaining body. The semi-circular arc of the plate body 42 is in contact with the inner wall of the old pipeline 1; the docking piece 6 is a steel pipe with an inner diameter larger than the outer diameter of the docked pipeline, and a steel ring 61 fixedly connected to the inner wall of the steel pipe is arranged in the middle of the steel pipe. The inner diameter of the ring 61 is smaller than the outer diameter of the connecting pipes 1 and 2 and larger than the inner diameter of the connecting pipes 1 and 2, and the annular gaps between the connecting piece 6 and the old pipe 1 and the new pipe 2 are formed by packing. Sealed connection.

First, lower the water level in the old pipe 1, and open a hole in the upper part of the old pipe 1. The size of the hole is enough to meet the operating space for the air bag 3 and the water retaining plate 4, and then place the air bag 3, the drainage pump 5 and the water retaining plate 4 in sequence. into the pipeline, and then start the air compressor to inflate and pressurize the airbag, so that the airbag expands to achieve first-level sealing; then the drainage pump 5 will discharge the remaining water after sealing from the opening of the old pipeline 1; then cut the old pipeline 1. Cut off the hole, leaving the part where the airbag 3, the drainage pump 5 and the water retaining plate 4 are installed, and then the connection piece 6 is set on the old pipeline 1 and the new pipeline 2, and the drainage pipe of the drainage pump 5 is connected to the new pipeline. The drain outlet of the airbag 1 is discharged, and the annular gaps between the connecting piece 6 and the old pipe 1 and the new pipe 2 are sealed and connected by filling. Finally, after the opening work is completed, Remove the drainage pump 5, water retaining plate 4 and air bag 1 in sequence, and block the drain outlet 7, and the pipeline returns to water supply.

Claims (2)

1. a kind of band waterpipe docking structure, includes caliber identical old pipeline and new pipeline, it is characterised in that：Also include The one-level closure air bag in old pipeline and neighbouring docking end is arranged at, is arranged in old pipeline and is blocked positioned at docking end and one-level Two level closure water fender between air bag, and fastener；Described two level closure water fender includes retractable support lever, half Circular dash plate body and rubber water-proof circle, the inner of described retractable support lever are fixedly connected on semicircle dash plate body diameter Middle part, the outer end of retractable support lever and the inwall of old pipeline, which support, to be closed, and described rubber water-proof circle is fixedly connected on semicircle Conjunction is supported on the semi arch of dash plate body and with the inwall of old pipeline；Described fastener is the steel that internal diameter is more than docking outer diameter tube Pipe, described steel pipe is interior to be provided with the steel loop being fixedly connected with steel pipe inner wall positioned at middle part, and the internal diameter of steel loop is less than docking pipeline External diameter and more than the internal diameter of docking pipeline, annular gap between old pipeline, new pipeline uses described fastener respectively The mode that filler beats mouth is connected and sealed.

A kind of 2. band waterpipe docking structure according to claim 1, it is characterised in that：It is located at one in described old pipeline Draining pump is provided between level closure air bag and two level closure water fender, described new pipeline is provided with draining adjacent to docking end Mouthful, through hole is provided with described semicircle dash plate body, the drainpipe of described draining pump passes sequentially through two level closure dash The through hole of plate, discharge outlet are extend into outside new pipeline.