CN216112678U

CN216112678U - Protective gas filling device in pipe splicing pipe

Info

Publication number: CN216112678U
Application number: CN202122458375.0U
Authority: CN
Inventors: 解伟; 解傲颀; 解胜飞
Original assignee: WUXI HUAGUANG INDUSTRIAL BOILER CO LTD
Current assignee: WUXI HUAGUANG INDUSTRIAL BOILER CO LTD
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2022-03-22
Anticipated expiration: 2031-10-12

Abstract

The utility model relates to a protective gas filling device in a pipe splicing pipe, which comprises a gas outlet connecting pipe, wherein the gas outlet connecting pipe is respectively communicated with a first air bag, a pressure check valve, a second air bag and a first end of a three-way ball valve, the pressure check valve is positioned between the first air bag and the second air bag, the three-way ball valve is positioned on the outer side of a workpiece, and a second end of the three-way ball valve is communicated with a gas inlet pipe to input protective gas. The utility model 1 has compact structure, small occupied space and convenient manufacture and maintenance; 2. the disassembly and assembly movement is time-saving and labor-saving, the gas loss is less, and the energy is saved and the environment is protected; 3. the particularity of adjustable inflation, expansion and deflation shrinkage of a double-air-bag structure is adopted, so that the double-air-bag structure can adapt to pipes with different specifications and irregular cavity sections; 4. the periphery of the double air bags is provided with an anti-abrasion heat insulation strip, so that the damage and the breakage of the pipe inner wall contacted with the air bags due to overhigh temperature during abrasion and expansion of the air bags are effectively prevented.

Description

Protective gas filling device in pipe splicing pipe

Technical Field

The utility model belongs to the technical field of welding tools, and relates to a protective gas filling device in a pipe splicing pipe.

Background

The boiler is widely applied to heat supply, gas supply and heating projects as common pressurized equipment. The pipes are used for a plurality of parts of the boiler, such as an economizer, a superheater, a water pipe system and the like, and because the related pipes have different specifications and lengths, the butt joint of the pipes in the boiler manufacturing process is common.

The gas shielded welding has the advantages of good welding quality, high efficiency, easy realization of automation and the like, and can be widely used and popularized in the butt joint of the pipes. At present, when gas shielded welding is used, required shielding gas is continuously filled into two ends of a butt joint pipe end when shielding gas is filled into a pipe, so that the shielding gas in the pipe is filled to the required concentration. The method is time-consuming (the time required for filling the whole internal space is longer when the pipe diameter is large and the length is long), material-consuming (although only the butt joint position needs protective gas, the protective gas needs to be filled in the whole pipe fitting and the leakage loss is larger in the gas filling process), labor-consuming (the time for waiting for gas filling is long when the spliced pipe fitting is long), and environment-friendly hidden danger (the protective gas filled in the filling process is directly leaked and discharged in the space environment of a working area, so that the environment and the human health are influenced, and the health and the potential safety hazard exist).

Disclosure of Invention

The utility model aims to provide a protective gas filling device in a pipe splicing pipe, which can solve the problems that protective gas needs to be filled in the whole pipe and the leakage loss is large in the gas filling process, the labor is wasted (the filling waiting time is long when the splicing pipe is long), and the environmental protection hidden trouble (the protective gas filled in the filling process directly leaks and is discharged in the space environment of a working area, the environment and the human health are influenced, and the health and the safety hidden trouble exist).

According to the technical scheme provided by the utility model: the utility model provides an it fills protective gas device in pipe concatenation pipe, is including the connecting pipe of giving vent to anger, and the connecting pipe of giving vent to anger communicates first gasbag, pressure check valve, second gasbag, the first end of tee bend ball valve respectively, and the pressure check valve is located between first gasbag, the second gasbag, and the tee bend ball valve is located the work piece outside, and tee bend ball valve second end intercommunication intake pipe input protective gas.

As a further improvement of the utility model, the air outlet connecting pipe is of a hollow structure, the left end of the air outlet connecting pipe is provided with a first air outlet, the periphery of the first air outlet is sleeved with a first air bag, the middle part of the air outlet connecting pipe is provided with a second air outlet which is installed and communicated with the pressure check valve, the right side part of the air outlet connecting pipe is provided with a third air outlet, the periphery of the third air outlet is sleeved with the second air bag, the right end part of the air outlet connecting pipe is provided with a fourth air outlet, the fourth air outlet is provided with a joint, the first end of the three-way ball valve is provided with a quick joint, and the joint is communicated with the quick joint through a ventilation hose.

As a further improvement of the utility model, the first air bag is made of elastic material, and is provided with a first air inlet which is wrapped at the left end of the air outlet connecting pipe.

As a further development of the utility model, the first bladder is made of rubber.

As a further improvement of the utility model, the second air bag is made of elastic material, a first sleeving hole penetrates through the second air bag, and the first sleeving hole is sealed and wraps the periphery of the second air outlet.

As a further development of the utility model, the second airbag is made of rubber.

As a further improvement of the utility model, a stay bar is arranged between the air outlet connecting pipe and the three-way ball valve, the stay bar is of a C-shaped semi-open structure, two ends of the stay bar are connected with the right end of the air outlet connecting pipe and the quick connector, and the air hose is positioned in the stay bar.

As a further improvement of the utility model, a plurality of wear-resistant and heat-insulating strips are bonded on the peripheries of the first air bag and the second air bag at intervals.

As a further improvement of the utility model, the length direction of the anti-abrasion heat-insulation strip is parallel to the axis of the air outlet connecting pipe.

As a further improvement of the utility model, the third end of the three-way ball valve is connected with an exhaust pipe to a specified position which does not affect the environmental health and safety.

The positive progress effect of this application lies in:

the utility model has compact structure, small occupied space and convenient manufacture and maintenance; 2. the disassembly and assembly movement is time-saving and labor-saving, the gas loss is less, and the energy is saved and the environment is protected; 3. the particularity of adjustable inflation, expansion and deflation shrinkage of a double-air-bag structure is adopted, so that the double-air-bag structure can adapt to pipes with different specifications and irregular cavity sections; 4. the anti-abrasion heat insulation strips are arranged at the peripheries of the double air bags, so that the abrasion of the air bags and the damage and breakage of the pipe inner wall contacted with the air bags due to overhigh temperature during expansion are effectively prevented; 5. the arrangement of the pressure check valve structure can effectively ensure the tensioning and sealing effect of the air bag structure; 6. the stay bar is provided with a semi-open structure, so that the ventilation hose and the quick connector can be conveniently accommodated, inspected and replaced, the hose can be effectively prevented from being abraded, and the stay bar is convenient and quick to operate due to the adoption of a screw fastening structure at the front end; 7. the quick joint structure is convenient to disassemble and assemble, self-locking connection and disconnection of pipelines can be quickly realized, and the operation flexibility of the device is improved; 8. by adopting the three-way ball valve structure, the input of the protective gas can be quickly cut off, and the protective gas in the air bag is discharged through the exhaust hose, so that the protective gas is effectively prevented from being released on the spot to influence the environment and harm workers, and the feasibility is provided for gas recovery.

Drawings

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

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the utility model herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover such processes, methods, systems, articles, or apparatus that comprise a list of steps or elements, are not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such processes, methods, articles, or apparatus.

In the figure 1, the anti-abrasion heat-insulation device comprises a first air bag 1, an anti-abrasion heat-insulation strip 2, an air outlet connecting pipe 3, a pressure check valve 4, a valve body 4-1, an adjusting screw 4-2, a spring 4-3, a plug 4-4, a through hole 4-5, an air outlet hole 4-6, a second air bag 5, a screw 6, a connector 7, a support rod 8, a vent hose 9, a quick connector 10, an SH female head 10-1, a PM male head 10-2, a three-way ball valve 11, an exhaust pipe 12, an air inlet pipe 13, a workpiece butt joint center 14, a workpiece 15 and the like.

As shown in figure 1, the utility model relates to a protective gas filling device in a pipe splicing pipe, which comprises a gas outlet connecting pipe 3, wherein the gas outlet connecting pipe 3 is respectively communicated with a first gas bag 1, a pressure check valve 4, a second gas bag 5 and a first end of a three-way ball valve 11, the pressure check valve 4 is positioned between the first gas bag 1 and the second gas bag 5, and the three-way ball valve 11 is positioned outside a workpiece 15. The second end of the three-way ball valve 11 is communicated with an air inlet pipe 13 to input protective gas.

The air outlet connecting pipe 3 is of a hollow structure, the left end of the air outlet connecting pipe 3 is a first air outlet, a first air bag 1 is sleeved on the periphery of the first air outlet, a second air outlet is arranged in the middle of the air outlet connecting pipe 3 and is installed and communicated with a pressure check valve 4, a third air outlet is arranged at the right end of the air outlet connecting pipe 3, a second air bag 5 is sleeved on the periphery of the third air outlet, a fourth air outlet is arranged at the right end of the air outlet connecting pipe 3, a fourth air outlet installation connector 7 is arranged, a quick connector 10 is installed at the first end of a three-way ball valve 11, the left end of the quick connector 10 is an SH female head 10-1, the right end of the quick connector 10 is a PM male head 10-2, the quick plugging and communication self-locking of a gas pipeline are guaranteed, and the connector 7 is communicated with the SH female head 10-1 at the left end of the quick connector 10 through an air hose 9.

The first air bag 1 is made of elastic material such as rubber, the first air bag 1 is provided with a first air inlet, and the first air inlet is wrapped at the left end of the air outlet connecting pipe 3 to ensure sealing.

The second air bag 5 is made of elastic materials such as rubber, a first sleeving hole penetrates through the second air bag 5, and the first sleeving hole is used for sealing and wrapping the periphery of the second air outlet.

The pressure check valve 4 comprises a valve body 4-1, the valve body 4-1 is of a hollow structure, a through hole 4-5 is formed in the bottom of the valve body and communicated with the air outlet connecting pipe 3, the through hole 4-5 is blocked by a plug 4-4, the plug 4-4 slides in the valve body 4-1, and the contact part of the plug 4-4 and the through hole is matched by a 120-degree conical surface; the circumference of the valve body 4-1 is provided with vent holes 4-6 communicated with the through holes 4-5, the top of the hollow part is in threaded connection with an adjusting screw 4-2, a spring 4-3 is arranged between the adjusting screw 4-2 and the plug 4-4, the blocking pressure of the plug 4-4 is adjusted through the adjusting screw 4-2 and the spring 4-3, and the filling pressure value of the protective gas in the gas outlet connecting pipe 3 entering the closed space of the butt joint part through the through holes 4-5 and the vent holes 4-6 is controlled.

When the pressure is larger than the elastic force of the spring 4-3, the plug 4-4 is opened, and the protective gas flows into the workpiece 15 from the second gas outlet through the through hole 4-5 and the vent hole 4-6.

The three-way ball valve 11 is an L-shaped three-way ball valve; the three-way ball valve 11 is of an internal thread structure, the second end and the third end are respectively provided with a connector in threaded connection, the handle rotates by 90 degrees, the first end is in threaded installation with a PM male end 10-2 of the quick connector 10, the second end is communicated with the air inlet pipe 13, and the third end is communicated with the exhaust pipe 12; the handle is rotated, the first end third end is not communicated when the first end second end is communicated, the first end second end is not communicated when the first end third end is communicated, and the second end third end is not communicated.

In order to facilitate the placing and taking of the device and protect the ventilation hose 9, a support rod 8 is arranged between the air outlet connecting pipe 3 and the three-way ball valve 11, the support rod 8 is of a C-shaped semi-open structure, two ends of the support rod 8 are connected with the right side of the air outlet connecting pipe 3 and a quick connector 10 through screws 6, and the ventilation hose 9 is positioned in the support rod 8.

In order to avoid abrasion and thermal damage of the first air bag 1 and the second air bag 5 in the using process, a plurality of anti-abrasion heat-insulation strips 2 are bonded at intervals on the peripheries of the first air bag 1 and the second air bag 5, and the length directions of the anti-abrasion heat-insulation strips 2 are parallel to the axial direction of the air outlet connecting pipe 3.

The third end of the three-way ball valve 11 is connected with an exhaust pipe 12 to a specified position which does not affect the environmental health and safety.

The working process of the utility model is as follows:

when the device is used, the stay bar 8 with proper length is selected according to the length of the splicing position of the pipe, the length is larger than the length extending into the pipe end to the splicing position, the device is connected according to a drawing, the screwing depth of the screws 4-2 is adjusted by the pressure check valve 4 according to the pipes with different specifications of cavity sections, the air outlet pressure value of the pressure check valve 4 is selected and adjusted, the requirement that the first air bag 1 and the second air bag 5 form a closed space in the expansion state of the inner cavity of the pipe is met, and the front end of the stay bar 8 is connected and fastened with the air outlet connecting pipe 3 through the screws. The inspection pipeline outward appearance is intact, after the blast pipe 12 led to the assigned position, the handle of rotatory three-way ball valve 11, the first end second end intercommunication of three-way ball valve 11, the first end third end of three-way ball valve 11 is obstructed, it reveals to ventilate the inspection gas pipeline, the handle of rotatory three-way ball valve 11 after normal, the first end third end intercommunication of inspection three-way ball valve 11, the first end second end is obstructed, the second end third end is obstructed

The device of the first air bag 1 and the second air bag 5 in the contraction state is plugged into the spliced and positioned workpiece 15 by operating the support rod 8, and the position of the air bags in the workpiece 15 is adjusted until the pressure check valve 4 of the air outlet connecting pipe 3 is positioned at the position of the workpiece butting center 14.

When the handle of the three-way ball valve 11 is rotated to keep the first end and the second end communicated, the protective gas passes through the second end of the three-way ball valve 11 through the gas inlet pipe 13, the first end, the PM male head 10-2 of the C-shaped quick joint 10, the SH female head 10-1, the ventilation hose 9 and the joint 7 to reach the second gas bag 5, the gas outlet connecting pipe 3 and the first gas bag 1, the first gas bags 1 and 5 are inflated and expanded to be attached to the inner wall of the workpiece 15, a closed space is formed in a certain range of the workpiece butt joint center 14, the gas pressure in the gas outlet connecting pipe 3 is increased after the protective gas is continuously introduced, the pressure check valve 4 is triggered, the closed space is continuously filled with the protective gas, and the pipe splicing welding is carried out. After the welding operation is completed, the handle of the three-way ball valve 11 is rotated, the first end and the third end of the three-way ball valve 11 are communicated, the shielding gas input by the gas inlet pipe 13 connected with the second end is cut off and is admitted, the gas in the airbag is discharged through the exhaust pipe 12 communicated with the third end of the three-way ball valve 11 under the elastic contraction force of the gas in the airbag, and then the device can be smoothly drawn out to fill the next round of shielding gas.

It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the utility model, and these modifications and improvements are also considered to be within the scope of the utility model.

Claims

1. The utility model provides an fill protection gas device in pipe concatenation pipe, its characterized in that, is including the connecting pipe of giving vent to anger (3), and connecting pipe of giving vent to anger (3) communicate first gasbag (1), pressure check valve (4), second gasbag (5), the first end of tee bend ball valve (11) respectively, and pressure check valve (4) are located between first gasbag (1), second gasbag (5), and tee bend ball valve (11) are located work piece (15) the outside, and tee bend ball valve (11) second end intercommunication intake pipe (13) input protective gas.

2. The protection gas filling device in the pipe splicing pipe according to claim 1, wherein the gas outlet connecting pipe (3) is of a hollow structure, the left end of the gas outlet connecting pipe (3) is provided with a first gas outlet, a first gas bag (1) is sleeved on the periphery of the first gas outlet, the middle part of the gas outlet connecting pipe (3) is provided with a second gas outlet which is installed and communicated with the pressure check valve (4), the right side part of the gas outlet connecting pipe (3) is provided with a third gas outlet, a second gas bag (5) is sleeved on the periphery of the third gas outlet, the right end part of the gas outlet connecting pipe (3) is provided with a fourth gas outlet, a joint (7) is installed on the fourth gas outlet, a quick joint (10) is installed on the first end of the three-way ball valve (11), and the joint (7) is communicated with the quick joint (10) through a ventilation hose (9).

3. The protective gas filling apparatus in a pipe splicing pipe according to claim 1, wherein the first air cell (1) is made of an elastic material, and the first air cell (1) is provided with a first gas inlet which is wrapped around the left end of the gas outlet connecting pipe (3).

4. Tube splicing tube inner inflation protection gas device according to claim 3, characterized in that the first balloon (1) is made of rubber.

5. The protection gas filling device in the pipe splicing pipe according to claim 1, wherein the second air bag (5) is made of an elastic material, a first sleeving hole penetrates through the second air bag (5), and the first sleeving hole is sealed and wrapped on the periphery of the third air outlet.

6. The tube-splicing tube inner filling protection gas device according to claim 5, wherein the second bladder (5) is made of rubber.

7. The pipe splicing pipe inner protective gas filling device according to claim 2, wherein a stay bar (8) is installed between the gas outlet connecting pipe (3) and the three-way ball valve (11), the stay bar (8) is of a C-shaped semi-open structure, two ends of the stay bar are connected with the right end of the gas outlet connecting pipe (3) and the quick connector (10), and the ventilation hose (9) is positioned in the stay bar (8).

8. The tube-splicing tube-filling air-protecting apparatus according to claim 1, wherein a plurality of abrasion-proof and heat-insulating strips (2) are bonded to the outer peripheries of the first bladder (1) and the second bladder (5) at intervals.

9. The protection gas filling device in the pipe splicing pipe according to claim 8, wherein the length direction of the wear-resistant and heat-insulating strip (2) is parallel to the axial direction of the gas outlet connecting pipe (3).

10. The protection gas filling device in the pipe splicing pipe according to claim 1, wherein the third end of the three-way ball valve (11) is connected with a gas exhaust pipe (12) to a specified position which does not affect the environmental health and safety.