CN219473421U - Nitrogen replacement device for gas pipeline - Google Patents

Abstract

The utility model relates to a gas pipeline nitrogen replacement device which structurally comprises a transition cavity, quick connectors, nitrogen pipes, an adapter and a nitrogen pressure reducing valve, wherein the transition cavity is provided with a plurality of quick connectors, the transition cavity is provided with a nitrogen outlet, the nitrogen outlet is provided with the adapter, at least one quick connector is provided with the nitrogen pipe, the end part of the nitrogen pipe is connected with the nitrogen pressure reducing valve, and the nitrogen pressure reducing valve is used for being arranged at an air outlet of a nitrogen cylinder. The utility model can select proper adapter according to the actual condition of the site, and is suitable for interfaces of different types and sizes to ensure that the utility model can be connected with the gas pipeline in a sealing way, and meanwhile, the number of nitrogen cylinders can be determined according to the length, the size and the site requirement of the pipeline so as to rapidly input nitrogen into the gas pipeline.

Description

Nitrogen replacement device for gas pipeline

Technical Field

The utility model relates to a gas pipeline maintenance tool, in particular to a gas pipeline nitrogen replacement device.

Background

When the gas pipeline is reformed and maintained, if the fire operation is involved, the gas in the pipeline needs to be replaced by nitrogen so as to ensure the safety of site construction. When carrying out nitrogen gas replacement to gas pipeline now, dismantle an instrument device on the pipeline, connect the nitrogen pipe from instrument mounting mouth, thereby use the nitrogen cylinder to carry nitrogen gas in the pipeline to replace the gas in the pipeline, on the one hand nitrogen cylinder pressure and volume are limited, are difficult to replace the gas in the pipeline completely fast, on the other hand nitrogen pipe can't be adapted to the size of different instrument mounting mouths, can have the phenomenon of gas leakage when importing nitrogen gas in to the pipeline, lead to nitrogen gas replacement inefficiency, the effect is poor.

Disclosure of Invention

The utility model aims to provide a nitrogen replacement device for a gas pipeline, which aims to solve the problems of low nitrogen replacement efficiency and poor effect of the existing gas pipeline.

The utility model is realized in the following way: the utility model provides a gas pipeline nitrogen gas replacement device, includes transition cavity, quick-operation joint, nitrogen pipe, crossover sub and nitrogen gas relief pressure valve be provided with a plurality of quick-operation joints on the transition cavity be equipped with the nitrogen gas export on the transition cavity be provided with the crossover sub on the nitrogen gas export, at least one install the nitrogen pipe on the quick-operation joint the tracheal end connection of nitrogen has the nitrogen gas relief pressure valve, the nitrogen gas relief pressure valve is used for installing the gas outlet at the nitrogen gas bottle.

The transition cavity is cylindrical, and a nitrogen outlet extending outwards is arranged at one end of the transition cavity in a sealing way and the other end of the transition cavity in a sealing way.

The quick connectors are communicated with the transition cavity through connecting pipes, and the quick connectors are uniformly distributed around the transition cavity.

The adapter is a pipe joint or a flange joint.

The adapter has multiple types, and to the adapter of different types, its one end port size is the same for with nitrogen gas outlet connection, the other end port size is different.

When the nitrogen gas pipeline is subjected to nitrogen gas replacement, valves at two ends of a pipeline to be replaced are closed, a proper instrument is detached at one end of the pipeline to obtain an input port for inputting nitrogen gas, the pipeline is opened at the other end of the pipeline to enable the gas to be smoothly discharged, a proper adapter is arranged on a nitrogen gas outlet, at least one quick connector is connected with a nitrogen pipe, a nitrogen pressure reducing valve at the end part of the nitrogen pipe is arranged on a nitrogen cylinder, the adapter is arranged on an installation port of the instrument, and the nitrogen cylinder valve is opened to input nitrogen gas into the gas pipeline through the nitrogen gas pipeline, so that the nitrogen gas replacement of the gas pipeline is performed.

The utility model can select proper adapter according to the actual condition of the site, and is suitable for interfaces of different types and sizes to ensure that the utility model can be connected with the gas pipeline in a sealing way, and meanwhile, the number of nitrogen cylinders can be determined according to the length, the size and the site requirement of the pipeline so as to rapidly input nitrogen into the gas pipeline.

Drawings

Fig. 1 is a structural diagram of the present utility model.

Fig. 2 is a structural view of the adapter of the present utility model when the adapter is a flange adapter.

1. A transition cavity; 2. a quick connector; 3. a nitrogen outlet; 4. a conversion joint; 5. a nitrogen pipe; 6. nitrogen pressure reducing valve.

Detailed Description

As shown in fig. 1 and 2, the utility model comprises a transition cavity 1, a plurality of quick connectors 2 are arranged on the transition cavity 1, a nitrogen outlet 3 is arranged on the transition cavity 1, an adapter 4 is arranged on the nitrogen outlet 3, a nitrogen pipe 5 is arranged on at least one quick connector 2, the end part of the nitrogen pipe 5 is connected with a nitrogen pressure reducing valve 6, and the nitrogen pressure reducing valve 6 is used for being arranged at the air outlet of a nitrogen cylinder.

The transition cavity 1 is cylindrical, and the sealed other end of transition cavity 1 is equipped with the nitrogen gas export 3 of outwards extending. The nitrogen entering from the quick connector 2 is collected in the transition cavity 1, and the collected nitrogen is discharged together from the nitrogen outlet 3.

Quick-operation joint 2 can realize the quick plug of nitrogen pipe 5, and the joint of nitrogen pipe 5 tip is pegged graft on quick-operation joint 2 after, and quick-operation joint 2's case is opened, and nitrogen pipe 5 just communicates with transition cavity 1, and the joint of nitrogen pipe 5 tip is pulled down from quick-operation joint 2 after, and the case of card quick-operation joint just is closed, prevents that nitrogen gas from leaking from this quick-operation joint 2.

The nitrogen pipe 5 is a flexible pipe, one end of the nitrogen pipe is fixedly connected with the nitrogen pressure reducing valve 6, and the other end of the nitrogen pipe is provided with a connector which can be connected with the quick connector 2.

According to the utility model, a plurality of nitrogen pipes 5 can be connected as required to increase the flow of nitrogen, provide sufficient nitrogen and increase and decrease the nitrogen pipes 5 can be rapidly realized through the insertion and the extraction of the quick connector 2.

The quick connectors 2 are communicated with the transition cavity 1 through connecting pipes, and the quick connectors 2 are uniformly distributed around the transition cavity 1. The quick connector 2 generally has four or six, and quick connector 2 divide into the multiunit, and each group contains two quick connectors 2 of arranging along the axis direction of transition cavity 1, multiunit quick connector 2 evenly distributed around the axis of transition cavity 1, can make a plurality of nitrogen gas pipes 5 that connect on quick connector 2 each other have certain interval like this, can not appear intertwining, be convenient for arrangement and operation.

Among them, the adapter 4 is provided in plural, and the adapter 4 is of various types, and the types of the adapter 4 generally include pipe joints and flange joints. When the adapter 4 is a flange joint, the structure of the present utility model is shown in fig. 2.

Each type of adapter 4 has a plurality of types, and for different types of adapter 4, one end port size is the same for connection with the nitrogen outlet 3, and the other end port size is different.

When the gas pipeline is replaced by nitrogen, the instrument on the pipeline can be dismantled as a nitrogen injection port, and the installation port of the general instrument can be connected through a pipe joint; it is also possible to disconnect at the flange location of the pipe and then connect the nitrogen outlet 3 of the utility model to the flange on the pipe via a flange joint. The type and model of the adapter 4 is selected according to the field requirements.

The end connection of nitrogen pipe 5 has nitrogen gas relief pressure valve 6, and nitrogen gas relief pressure valve 6 installs on the gas outlet of nitrogen cylinder, can control the pressure of giving vent to anger of nitrogen cylinder through nitrogen gas relief pressure valve 6, guarantees the stability of nitrogen gas flow and the security of device.

When the gas pipeline is reformed and maintained, nitrogen replacement operation is needed, and the operation process for carrying out nitrogen replacement by using the method comprises the following steps: firstly, closing valves at two ends of a pipeline to be replaced, detaching a proper instrument at one end of the pipeline or disconnecting a flange joint to obtain an input port for inputting nitrogen, opening an outlet at the other end of the pipeline to form an emptying port so as to facilitate gas discharge, selecting a proper conversion head according to the type and the size of the nitrogen input port on the pipeline, installing proper conversion joints 4 on the nitrogen outlet 3 according to the utility model, determining the number of nitrogen cylinders for simultaneously supplying nitrogen according to the size, the length and the like of the pipeline, connecting a nitrogen pipe 5 on the quick connector 2, installing a nitrogen decompression valve 6 at the end part of the nitrogen pipe 5 on the nitrogen cylinders, installing the conversion joints 4 on the nitrogen input port on the pipeline, opening the nitrogen cylinder valve, and inputting nitrogen into the gas pipeline by the utility model so as to perform nitrogen replacement of the gas pipeline.

The utility model can select the proper adapter 4 according to the actual condition of the site, and is suitable for interfaces of different types and sizes so as to ensure that the utility model can be connected with a gas pipeline in a sealing way, and meanwhile, the number of nitrogen cylinders can be determined according to the length, the size and the site requirement of the pipeline so as to rapidly input nitrogen into the gas pipeline. The utility model can be applied to the work of nitrogen replacement in most of gas maintenance and transformation, and can ensure the speed, efficiency and quality of nitrogen replacement.

Claims (5)

1. The utility model provides a gas pipeline nitrogen gas replacement device, its characterized in that, includes transition cavity, quick-operation joint, nitrogen pipe, crossover sub and nitrogen gas relief pressure valve be provided with a plurality of quick-operation joints on the transition cavity be equipped with the nitrogen gas export on the transition cavity be provided with the crossover sub on the nitrogen gas export, at least one install the nitrogen pipe on quick-operation joint the tracheal end connection of nitrogen has the nitrogen gas relief pressure valve, the nitrogen gas relief pressure valve is used for installing the gas outlet at the nitrogen gas bottle.

2. The gas pipeline nitrogen replacement device according to claim 1, wherein the transition cavity is cylindrical, and one end of the transition cavity is sealed, and the other end of the transition cavity is provided with an outwardly extending nitrogen outlet.

3. The gas pipeline nitrogen substitution device of claim 1, wherein the quick connectors are in communication with the transition cavity through connecting pipes, and wherein the quick connectors are evenly distributed around the transition cavity.

4. The gas pipeline nitrogen substitution device of claim 1, wherein the adapter is a pipe joint or a flange joint.

5. The gas pipeline nitrogen substitution device of claim 1, wherein the adapter has a plurality of types, and for different types of adapter, one end port size is the same for connecting with the nitrogen outlet, and the other end port size is different.