CN2867056Y - A pipeline rapid drainage plugging device - Google Patents

Abstract

The utility model relates to a quick drainage leak stopper for stopping leakage of a fluid conveying pipeline, which is an improvement on the prior leak stopper. The improved dry powder injection valve comprises a drainage plugging mechanism, a drainage plugging head 4 and a tensioning mechanism, wherein the drainage plugging mechanism is improved in that a dry powder injection valve 7 is welded on a sealing plate 6 which is welded with an outer short pipe 3 and an inner short pipe 8 which are coaxially sleeved, and is opposite to an opening at the interlayer between the two short pipes 3 and 8, and a dry powder extinguisher 13 is matched, so that fire extinguishing dry powder is injected into the interlayer between the two short pipes 3 and 8 through the dry powder injection valve 7 when plugging operation is carried out. The utility model discloses fundamentally has solved potential unsafe hidden danger in the shutoff salvagees the operation, simple structure, and easy and simple to handle, and practical, save.

Description

A pipeline rapid drainage plugging device

technical field

The utility model is a rapid drainage leak stopper for fluid delivery pipeline plugging, which is an improvement on the prior art. It relates to the technical field of piping systems.

Background technique

Fluid conveying pipelines will inevitably leak due to various reasons during operation. The current plugging technology is quite mature. The company authorized the zl01231818.3 and zl03244663.2 belts on September 24, 2003 and October 13, 2004. Oil [gas] pressure leak plugging device is a typical representative. The utility model solves the problem of rush repairing the leakage point with oil [gas] and pressure without stopping when there is a leakage point in the pipeline or its accessories, and is simple, safe and reliable. But the fly in the ointment is that there is still a little safety hazard, that is, combustible waste gas will accumulate in the interlayer between the inner and outer short tubes of the occluder when welding. When the accumulated waste gas increases, it may be ignited by the sparks during welding, threatening Safety.

Utility model content

The purpose of the utility model is to design a drainage and sealing device which is safer in pipeline sealing and repairing.

The utility model, like the prior art, also includes a drainage sealing mechanism, a drainage sealing head 4 and a tensioning mechanism [see Fig. 1]. The outer short pipe 3 and the inner short pipe 8 are coaxially sleeved with two pipes. The lower ends of the two short pipes are made into a saddle shape matching the plugging pipeline. The inner short pipe 8 is equipped with a sealing rubber ring 2 on the saddle shape, and the outer short pipe 3 The pipe 1 is welded, and the two manual chain clips 12 of the tensioning mechanism are passed through the holes on the two chain ears 9 fixedly connected to the outer short pipe 3 and put on the pipe 1, and the drainage blocking mechanism is buckled. After positioning on the leakage point, after the sealing and welding of the outer short pipe 3 on the pipeline 1 is completed, close the drainage valve 5, cover the sealing head 4 on the sealing plate 6 and weld it. The utility model is characterized in that a dry powder injection valve 7 is perforated and welded at the interlayer between the outer short pipe 3 and the inner short pipe 8 on the sealing plate 6, and a dry powder injection valve 7 is used to short the pipe outward during the sealing operation. 3 and the interlayer between the inner short pipe 8 inject fire extinguishing dry powder. The dry powder for fire extinguishing here is injected by docking the inlet of the dry powder fire extinguisher 13 and the dry powder injection valve 7 . The dry powder fire extinguisher 13 can be selected various types of dry powder fire extinguishers that are commonly used.

Description of drawings

Fig. 1 - a composition diagram of a rapid drainage occluder

Among them 1-pipe 2-sealing rubber ring

3-outer short pipe 4-plugging head

5-Drainage valve 6-Sealing plate

7-Dry powder injection valve 8-Inner short tube

9-chain ear 10-leakage point

11-Reinforcement plate 12-Manual chain card

13-Fire extinguisher

Detailed ways

Embodiment: illustrate the specific implementation of the present utility model with this embodiment. The structure of the device in this example is shown in Figure 1. It is to block the leakage point 10 of the oil stealing valve on the pipeline with a diameter of 508mm. Therefore, the inner short pipe 8 chooses a short pipe with an outer diameter of 200mm, a height of 400mm, and a wall thickness of 10mm, and the outer short pipe 3 chooses a short pipe with an outer diameter of 400mm, a height of 410mm, and a wall thickness of 10mm. Matching saddle shape, the sealing rubber ring 2 is installed on the saddle-shaped mouth of the inner short pipe 8, and the upper end of the two short pipes 8 and 3 are coaxially sleeved and welded with the sealing plate 6 with a diameter of 400 mm and a thickness of 10 mm; The hole welding drainage valve 5 is a ball valve of model DN25PN25, and a dry powder injection valve 7 is drilled and welded at the interlayer between the outer short pipe 3 and the inner short pipe 8 on the sealing plate 6, and the selected model is the same as that of the drainage valve 5; The plugging head 4 is bowl-shaped, and the outer diameter of the bowl mouth is the same as the outer diameter of the outer short pipe 3; a chain ear 9 is welded on one side of the outer upper part of the outer short pipe 3 corresponding to the saddle-shaped middle part of the lower end, which is cut into 100 by a 20mm thick steel plate. ×150mm rectangular plate, punch a hole with a diameter of 10mm in the middle, or cut a semicircular opening in the middle of the rectangular plate; and then use two commonly used manual chain clips 12 and a commonly used dry powder fire extinguisher. When plugging, first connect the drainage tube and open the drainage valve 5, buckle the plugging device on the leakage point 10 of the oil stealing valve, use two manual chain clips 12 to tightly position it on the pipeline 1, and open the dry powder injection valve 7 , weld the outer short pipe 3 and the pipeline 1, and spray dry powder at the inlet of the dry powder injection valve 7 with a dry powder fire extinguisher 13 at the same time, and weld the reinforcement plate 11 to weld the reinforcement plate according to the welding process requirements, and stop spraying after the welding is completed. Dry powder, close the drainage valve 5 and the dry powder injection valve 7, weld the drainage sealing head 4 on the drainage sealing mechanism, and seal the two valves in the drainage sealing mechanism. When using this occluder for welding, since the dry powder is sprayed into the interlayer between the inner and outer short pipes 8 and 3, the flame retardant gas produced by the dry powder in the interlayer when the outer short pipe 3 is welded cuts off the combustible gas and the open flame. Contact, of course, also eliminates the possibility of combustible gas explosion, thus ensuring absolute safety in the welding process. This device has also fully proved this point through many tests and actual use on the spot.

It can be seen from the above that the utility model only needs to make one modification to the existing occluder to completely solve the potential unsafe hidden danger in the occluder emergency repair, and the structure is very simple, the operation is also very convenient, and it is also practical and economical.

Claims (2)

1. a kind of pipeline quick drainage leak stopping device of conveyance conduit leak stopping, comprise the drainage plugging mechanism, drainage block head [4] and tensioning mechanism, shrouding [6] as the drainage plugging mechanism upwards is welded with drain valve [5], be welded with two-tube coaxial outer short tube [3] that is nested and interior short tube [8] downwards, the lower end becomes saddle-shaped interior short tube [8] that O-ring seal [2] is housed and outer short tube [3] is gone up welding toward pipeline [1], two manual chain cards [12] by tensioning mechanism pass and are enclosed within on the pipeline [1] in the hole on two the chain ears [9] outside the short tube [3] outside being fixed on, drainage leak stopping mechanism is buckled in location, back on the leakage point, block head [4] is placed on that shrouding [6] is gone up and welding, it is characterized in that going up over against the notes dry powder valve [7] that is welded of interlayer place punching between outer short tube [3] and the interior short tube [8] at shrouding [6].

2. a kind of pipeline quick drainage leak stopping device according to claim 1 is characterized in that annotating dry powder valve [7] collar extension butt joint powder-type fire extinguisher [13].

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