CN216479613U - Maintenance and first-aid repair pipe clamp for ammonia refrigeration pipeline - Google Patents

Abstract

The utility model belongs to the field of maintenance and emergency repair tools for ammonia refrigeration pipelines, and relates to a maintenance and emergency repair pipe clamp for an ammonia refrigeration pipeline. The ammonia refrigeration pipeline leakage point plugging device comprises semi-circular pipe clamps, bolts, nuts, spring pads, leakage point plugging screw plugs and leakage point plugging sealing gaskets, wherein the leakage point plugging screw plugs are matched with the leakage point plugging sealing gaskets and are in threaded connection with leakage points which are drilled and tapped, two semi-circular pipe clamps are arranged around the periphery of an ammonia refrigeration pipeline, and one of the semi-circular pipe clamps compresses the upper parts of the leakage point plugging screw plugs; the two semi-circular pipe clamps are fixedly locked through bolts, nuts and spring pads at two ends. The pipe clamp does not need to weld and repair open fire operation when maintenance and rush repair operation is carried out on the micro leakage point of the ammonia refrigeration pipeline, thereby avoiding the risk of explosion accidents caused by open fire when residual oil ammonia mixture is subjected to the open fire due to incomplete emptying of the ammonia refrigeration pipeline; therefore, the safety of first-aid repair is improved, and the maintenance and first-aid repair time and cost of the leakage point of the ammonia refrigeration pipeline are saved.

Description

Maintenance and first-aid repair pipe clamp for ammonia refrigeration pipeline

Technical Field

The utility model belongs to the field of maintenance and emergency repair tools for ammonia refrigeration pipelines, and relates to a leakage stopping device for maintaining and emergency repairing pipe clamps of tiny leakage points on refrigeration house ammonia refrigeration system pipelines in the food cold chain logistics industry or meeting the non-welding repair requirements.

Background

The ammonia refrigeration system pipeline internal conveying refrigerant ammonia belongs to toxic, inflammable and explosive working media, and according to GB50072-2010 refrigeration house design specifications, an ammonia refrigeration pipeline pipe adopts a GB/T8163 seamless steel pipe, and the design pressure of the high pressure side of an ammonia refrigeration pressure pipeline is 2.0Mpa, and the design pressure of the low pressure side of the ammonia refrigeration pressure pipeline is 1.5 Mpa. After a certain period of operation of the refrigeration house, the conditions of sand holes, needle-shaped small holes and the like of parent materials of individual ammonia refrigeration pipelines and welding lines are often met. After the leakage point of the pipeline is enlarged, accidents such as personnel poisoning or fire, explosion and the like are easy to happen.

At present, the conventional treatment generally needs to stop production and empty the ammonia refrigeration pipeline at a section to be maintained, and the leakage point can be welded and blocked under the premise of connecting the atmosphere; however, for an old system with a long pipeline, oil is easy to accumulate in the pipe wall, and the emptying time is long, so that the refrigerating system has long cold stopping time, and goods in a cold storage are easy to deteriorate; if the air is not completely discharged, the oil-ammonia mixture is exposed to electric welding naked flame, so that explosion accidents are easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide the maintenance and rush-repair pipe clamp for the ammonia refrigeration pipeline, so that electric welding and welding leakage stoppage are not needed when the maintenance and rush-repair of the ammonia refrigeration pipeline are carried out, the risk of welding leakage stoppage accidents is avoided, and the maintenance time and the maintenance cost are saved.

The technical scheme of the utility model is as follows:

a maintenance and emergency repair pipe clamp for an ammonia refrigeration pipeline comprises a semi-circular pipe clamp, a bolt, a nut, a spring pad, a leakage point plugging screw plug and a leakage point plugging sealing gasket, wherein the leakage point plugging screw plug is matched with the leakage point plugging sealing gasket and is in threaded connection with a leakage point after drilling and tapping; the two semicircular pipe clamps are fixedly locked through bolts, nuts and spring pads at two ends.

Preferably, the semicircular pipe clamp is 2 mm.

Preferably, the leak source plugging screw plug is made of carbon steel or stainless steel.

Preferably, the leakage point blocking sealing gasket is a tetrafluoro gasket.

The utility model has the beneficial effects that: the leakage point plugging bolt and the leakage point plugging sealing gasket are directly arranged at the leakage point of the ammonia refrigeration pipeline of the food cold chain refrigeration house, and are installed in the thread of the ammonia refrigeration pipeline after drilling and tapping at the leakage point through the leakage point plugging bolt and the leakage point plugging sealing gasket, and the leakage point of the ammonia refrigeration pipeline is plugged through the leakage point plugging bolt and the leakage point plugging sealing gasket. The whole leaking stoppage process is sealed by a leaking point plugging bolt and the leaking point plugging sealing gasket; because the method of bolts and fixed pipe clamps is adopted for plugging, the method has no influence on the safety of a small amount of oil-ammonia mixture remained in the ammonia refrigeration pipeline, so that the plugging operation can be carried out without nitrogen purging replacement and welding, the explosion risk of electric welding and welding plugging operation open fire due to incomplete emptying of the oil-ammonia mixture of the ammonia refrigeration pipeline can be avoided, the maintenance and first-aid repair period can be shortened, and the cost can be saved.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of the maintenance and emergency repair pipe clamp for the ammonia refrigeration pipeline.

In the figure: 1, semi-circular pipe clamp; 2, bolts; 3, a nut; 4, a spring cushion; 5, plugging bolts at leakage points; 6, sealing gaskets are sealed by leakage points; 7 ammonia refrigeration pipeline.

Detailed Description

Further advantages and characteristics of the utility model are illustrated by the following description of an embodiment thereof, given by way of example and not of limitation, with reference to the accompanying drawings, in which:

a maintenance and emergency repair pipe clamp for an ammonia refrigeration pipeline comprises semi-circular pipe clamps 1, bolts 2, nuts 3, spring pads 4, leak point plugging screw plugs 5 and leak point plugging sealing gaskets 6, wherein the leak point plugging screw plugs 5 are matched with the leak point plugging sealing gaskets 6 and are in threaded connection with leak points after drilling and tapping, two semi-circular pipe clamps 1 are arranged around the periphery of the ammonia refrigeration pipeline 7, and one semi-circular pipe clamp 1 compresses the upper parts of the leak point plugging screw plugs 5; the two semi-circular pipe clamps 1 are fixedly locked through bolts 2, nuts 3 and spring pads 4 at two ends.

Wherein, the semicircular pipe clamp and the spring pad are arranged at the leakage point of the ammonia refrigeration pipeline; the leakage point plugging screw plug and the leakage point plugging sealing gasket are arranged in a thread formed by drilling and tapping at the leakage point of the ammonia refrigeration pipeline, and the leakage point of the ammonia refrigeration pipeline is plugged through the leakage point plugging screw plug and the leakage point plugging sealing gasket.

When the leakage stopping operation is needed, the leakage point stopping screw plug and the leakage point stopping sealing gasket are screwed in the thread of the leakage point after drilling and tapping, and then the leakage point stopping screw plug is compressed through the semi-circular pipe clamp, the bolt, the spring pad and the nut.

Although the present invention has been described in terms of the preferred embodiments, it is not intended that the scope of the utility model be limited to the exact construction described above, and equivalent alternate constructions will occur to those skilled in the art upon reading the foregoing description and are intended to be encompassed by the present invention unless they depart from the spirit and scope of the utility model.

Claims (4)

1. A maintenance and emergency repair pipe clamp for an ammonia refrigeration pipeline is characterized by comprising a semi-circular pipe clamp (1), a bolt (2), a nut (3), a spring pad (4), a leak point plugging screw plug (5) and a leak point plugging sealing gasket (6), wherein the leak point plugging screw plug (5) is matched with the leak point plugging sealing gasket (6) and is in threaded connection with a leak point after drilling and tapping, two semi-circular pipe clamps (1) are arranged around the periphery of the ammonia refrigeration pipeline (7), and one semi-circular pipe clamp (1) compresses the upper part of the leak point plugging screw plug (5); the two semicircular pipe clamps (1) are fixedly locked through bolts (2), nuts (3) and spring pads (4) at two ends.

2. The ammonia refrigeration pipeline maintenance and repair pipe clamp of claim 1, wherein the thickness of the semi-circular pipe clamp is 2 mm.

3. The ammonia refrigeration pipeline maintenance and repair pipe clamp as claimed in claim 1, wherein the leak point plugging screw plug (5) is made of carbon steel or stainless steel.

4. The ammonia refrigeration pipeline maintenance and repair pipe clamp as claimed in claim 1, wherein the leak point plugging sealing gasket (6) is a tetrafluoro gasket.

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