CN211991360U - Local inflating device in pipeline - Google Patents
Local inflating device in pipeline Download PDFInfo
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- CN211991360U CN211991360U CN202020538418.9U CN202020538418U CN211991360U CN 211991360 U CN211991360 U CN 211991360U CN 202020538418 U CN202020538418 U CN 202020538418U CN 211991360 U CN211991360 U CN 211991360U
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Abstract
The utility model discloses a local inflation device in a pipeline, which comprises a gas transmission device, two groups of sealing devices and a traction device, wherein the gas transmission device is used for transmitting gas between the two groups of sealing devices, and the sealing devices comprise a sealing plate and a pressing plate which are connected together through bolts; a connecting device is arranged between the two groups of sealing devices, the connecting device comprises a connecting chain and connecting rings, the connecting rings are respectively positioned on the opposite surfaces of the two pressure plates, and the connecting chain is used for connecting the two connecting rings; the air delivery device comprises an air distribution nozzle, an air inlet pipe and an air exhaust nozzle, the air inlet pipe penetrates through one sealing device to be connected with the air distribution nozzle arranged on the pressing plate, and the air exhaust nozzle is positioned on the other pressing plate; during the use of the local inflation device in the pipeline, the exhaust nozzle is positioned at the upper part of the pressure plate. The traction device is connected with one of the pressure plates. The caliber of the exhaust nozzle is 2-5 mm.
Description
Technical Field
The utility model belongs to the field of protection is aerifyd in the pipeline welding, concretely relates to local aerating device in pipeline suitable for the protection is aerifyd to the pipeline crater that the on-the-spot installation elbow is many, the diameter is great and the position is limited.
Background
At present, when the pipeline is welded by gas shielded welding, the welded junction needs to be protected by inflation. The conventional inflation mode is characterized in that the blocking plates and the sealing adhesive tapes are used at two ends of the pipeline, so that relatively closed air chambers are formed in the pipeline, and then the air chambers are inflated to be protected.
In view of this, the present invention is especially provided.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model aims at providing a local aerating device in the pipeline, when effectively solving the mouth of pipe welding, the welding qualification rate is low, the quality is poor that cause with the protection of shielding gas is not enough that the shielding gas is extravagant big.
In order to achieve the purpose, the local inflation device in the pipeline provided by the utility model comprises a gas transmission device and two groups of sealing devices, wherein the gas transmission device is used for transmitting gas between the two groups of sealing devices, the sealing devices comprise a sealing plate and a pressing plate which are connected together,
a connecting device is arranged between the two groups of sealing devices, the connecting device comprises a connecting chain and connecting rings, the connecting rings are respectively positioned on the opposite surfaces of the two pressure plates, and the connecting chain is used for connecting the two connecting rings;
the air delivery device comprises an air distribution nozzle, an air inlet pipe and an air exhaust nozzle, the air inlet pipe penetrates through one sealing device to be connected with the air distribution nozzle arranged on the pressing plate, and the air exhaust nozzle is positioned on the other pressing plate;
during the use of the local inflation device in the pipeline, the exhaust nozzle is positioned at the upper part of the pressure plate.
Preferably, the sealing plate and the pressing plate are connected by bolts.
Furthermore, quick hooks are arranged at two ends of the connecting chain and are used for connecting the connecting ring.
Further, the device also comprises a traction device, and the traction device is connected with one of the pressure plates.
Preferably, the air distribution nozzle is located at the center of the pressing plate.
Further, the air inlet pipe is connected with the sealing device through a pipe hoop.
Preferably, the caliber of the exhaust nozzle is 2-5 mm.
The utility model provides a local aerating device in pipeline has following beneficial effect:
1. the sealing device with the exhaust nozzle is adjusted to enable the exhaust nozzle to be positioned right above the vertical direction, and the principle that welding protective gas is heavier than air is utilized to ensure that the protective gas can extrude and exhaust air in the inflating device all the time, so that the root of a welding opening can be effectively protected, the welding quality is ensured, the resource waste can be reduced, the construction cost is reduced, and the construction efficiency is improved;
2. the existence of the connecting chain can ensure that the inflation device can reliably connect two groups of sealing devices on a straight pipe section or a pipeline with a bent pipe, and the connecting chain can be flexibly twisted, so that the inflation device is particularly favorable for being taken out of the bent pipe;
3. the protective gas is input into the air inlet pipe, the low air conveying pressure and the small-caliber exhaust nozzle are kept to maintain the weak positive pressure state in the air conveying device, and the resource waste can be reduced.
Drawings
FIG. 1 is a schematic view of a local inflator in a pipeline according to this embodiment;
FIG. 2 is a schematic view of the structure of the local inflator inside the pipeline when the connecting chain is not connected in the present embodiment;
FIG. 3 is a schematic view of the structure of the local inflation device in the pipe inside the elbow when the connecting chain is connected in the embodiment.
In the drawings: 1. a sealing device; 1-1, sealing plates; 1-2, pressing a plate; 2. a connecting device; 2-1, connecting rings; 2-2, a connecting chain; 3. a traction device; 3-1, a traction rope; 4. a gas delivery device; 4-1, air distribution nozzles; 4-2, an air inlet pipe; 4-3, pipe hoop; 4-4 and an exhaust nozzle.
Detailed Description
In order to make the technical field better understand the solution of the present invention, the present invention will be further described in detail with reference to the following embodiments.
As shown in figure 1, the local inflation device in the pipeline disclosed by the patent comprises a gas transmission device 4, a connecting device 2, a traction device 3 and two groups of sealing devices 1.
The sealing device 1 comprises a sealing plate 1-1 and a pressing plate 1-2, the sealing plate 1-1 and the pressing plate 1-2 are fastened and connected together through a plurality of bolts, the sealing plate 1-1 is made of elastic materials such as rubber, and the sealing effect is achieved through elastic deformation of the sealing plate 1-1 in the pipeline.
The connecting device 2 comprises a connecting chain 2-2 and a connecting ring 2-1, wherein quick hooks are arranged at two ends of the connecting chain 2-2, the connecting ring 2-1 is arranged at two sides of each pressure plate 1-2, the connecting ring 2-1 in the opposite direction of the two pressure plates 1-2 is connected with the connecting chain 2-2, and at the moment, the quick hooks of the connecting chain 2-2 are connected with the connecting ring 2-1 so as to connect the two sealing devices 1;
the traction device 3 comprises a traction rope 3-1, the traction rope 3-1 is made of a small-diameter steel wire rope, the connecting ring 2-1 on the other side surface of one pressure plate 1-2 is connected with the traction rope 3-1, the position of the local inflating device in the pipeline can be adjusted by drawing the traction rope 3-1, and the local inflating device in the pipeline can be taken out of the pipeline by pulling the traction rope 3-1.
The gas transmission device 4 is composed of a gas distribution nozzle 4-1, a gas inlet pipe 4-2, a pipe hoop 4-3 and an exhaust nozzle 4-4, wherein one pressure plate 1-2 is connected with the gas distribution nozzle 4-1 in a welding way at the center of the surface of one side connected with a connecting chain 2-2, the gas inlet pipe 4-2 penetrates through the sealing device 1 and then is communicated with the gas distribution nozzle 4-1, and the gas inlet pipe 4-2 is fastened on the pressure plate 1-2 through the pipe hoop 4-3; the exhaust nozzle 4-4 is fixed right above the other pressure plate 1-2, the principle that welding protective gas is heavier than air is utilized to ensure that the protective gas can extrude and exhaust air in the air charging device all the time, and the caliber of the exhaust nozzle 4-4 is designed to be 2-5 mm.
The utility model discloses a local aerating device in pipeline is when using, will be with 3-1 of traction device 3's haulage rope, intake pipe 4-2 and take a set of sealing device 1 reliable connection of cloth air cock 4-1 to arrange two sets of sealing device 1 respectively in treating two sections pipeline mouths of welded 100-150mm positions, the sealing device 1 of adjusting area blast nozzle 4-4 makes blast nozzle 4-4 be located vertically directly over, utilizes the principle that welding protection gas is heavier than the air, guarantees that the protection gas can extrude the exhaust to the greatest extent with aerating device interior air all the time. When the distance between the aligned openings of the pipelines is 150mm, the connecting rings 2-1 on the two sealing devices 1 are connected by the quick hooks on the connecting chains 2-2, and the existence of the connecting chains 2-2 can ensure that the inflation device can reliably connect the two sealing devices on a straight pipe section or a pipeline with a bent pipe. After the pipeline is aligned, and the pipe orifice gap and the misalignment amount are adjusted to be qualified, the welded junction is wrapped by a circle of masking tape for sealing. Protective gas is input through the gas inlet pipe 4-2, argon can be selected as the protective gas, the protective gas fills a space formed between the two groups of sealing devices, the effect that welding seams in the protection pipe are not oxidized in the welding process is achieved, lower gas transmission pressure and the exhaust nozzle 4-4 with smaller aperture are arranged, and therefore the weak positive pressure state in the gas transmission device is maintained, wherein the pressure value is 0.05-0.08 Mpa. When the welding is to be welded to the circumferential weld seam seal, the protective gas pressure automatically overflows through the exhaust nozzle 4-4, and the welding seal is not influenced. After welding, the local inflating device in the pipeline can be smoothly taken out of the pipeline by pulling the traction rope 3-1, and the connecting chain 2-2 can be flexibly twisted, so that the local inflating device is particularly favorable for being taken out of the elbow.
The inventive concept is explained in detail herein using specific examples, and the above description of the embodiments is only used to help understand the core idea of the present invention. It should be understood that any obvious modifications, equivalents and other improvements made by those skilled in the art without departing from the spirit of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The local inflating device in the pipeline comprises a gas transmission device and two groups of sealing devices, wherein the gas transmission device is used for transmitting gas between the two groups of sealing devices, the sealing devices comprise a sealing plate and a pressing plate which are connected together, and the local inflating device is characterized in that,
a connecting device is arranged between the two groups of sealing devices, the connecting device comprises a connecting chain and connecting rings, the connecting rings are respectively positioned on the opposite surfaces of the two pressure plates, and the connecting chain is used for connecting the two connecting rings;
the air delivery device comprises an air distribution nozzle, an air inlet pipe and an air exhaust nozzle, the air inlet pipe penetrates through one sealing device to be connected with the air distribution nozzle arranged on the pressing plate, and the air exhaust nozzle is positioned on the other pressing plate;
during the use of the local inflation device in the pipeline, the exhaust nozzle is positioned at the upper part of the pressure plate.
2. The local aerator of claim 1, wherein said sealing plate and said pressure plate are bolted together.
3. The local inflator device in a pipeline according to claim 1, wherein both ends of the connecting chain are provided with quick hooks for connecting the connecting ring.
4. The local inflator device in a conduit according to claim 1, further comprising a pulling device coupled to one of the pressure plates.
5. The in-duct local inflator of claim 1, wherein the gas distribution nozzle is centrally located on the platen.
6. The in-duct local inflator of claim 1, wherein the inlet tube is coupled to the sealing device by a ferrule.
7. The local inflator device in a pipeline according to claim 1, wherein an aperture of the exhaust nozzle is 2-5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020538418.9U CN211991360U (en) | 2020-04-13 | 2020-04-13 | Local inflating device in pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020538418.9U CN211991360U (en) | 2020-04-13 | 2020-04-13 | Local inflating device in pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211991360U true CN211991360U (en) | 2020-11-24 |
Family
ID=73413288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020538418.9U Active CN211991360U (en) | 2020-04-13 | 2020-04-13 | Local inflating device in pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211991360U (en) |
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2020
- 2020-04-13 CN CN202020538418.9U patent/CN211991360U/en active Active
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