CN105004583B - High undersea hydrostatic pressures electric arc air cavity gas collecting device - Google Patents
High undersea hydrostatic pressures electric arc air cavity gas collecting device Download PDFInfo
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- CN105004583B CN105004583B CN201510518508.5A CN201510518508A CN105004583B CN 105004583 B CN105004583 B CN 105004583B CN 201510518508 A CN201510518508 A CN 201510518508A CN 105004583 B CN105004583 B CN 105004583B
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Abstract
The invention discloses a kind of high undersea hydrostatic pressures electric arc air cavity gas collecting device, it is made up of electric arc gas generation device and electric arc gas collection device, described electric arc gas generation device includes sealing radiator, steel plate and the fixed station for fixing welding rod, described fixed station and steel plate is each attached to the bottom of sealing radiator, the top of sealing radiator is communicated with first pressure controller by gas pipeline, first valve is installed on first pressure controller, described electric arc gas collection device includes the air collecting pipe being sequentially communicated by gas pipeline, gas collector and second pressure controller, in air collecting pipe insertion sealing radiator, and the air inlet of air collecting pipe is extended in electric arc air cavity, described second pressure controller is connected with inert gas bottle, the gas outlet of inert gas bottle is provided with gas bottle valve.The present invention can welding surroundings under simulation water, the gas in electric arc air cavity is collected to analyze its composition.
Description
Technical field
The present invention relates to a kind of high undersea hydrostatic pressures electric arc air cavity gas collecting device, belong to underwater welding technology field.
Background technology
Offshore oil production, oil pipeline and Offshore drilling platforms included by marine resources development and Underwater Engineering etc.
Construction installation, maintenance of large-scale steel structure etc. all be unable to do without underwater welding technology, underwater welding technology can cover to submarine pipeline,
Infringement repairing, the installation, maintenance of offshore steel structure thing submerged structure, which are provided, facilitates reliable technological means.Underwater Welding is also water
One of necessary technology means and key technology of the work such as anti-, rescue and relief work are rescued in face naval vessels, submarine emergency maintenance, sea.Dry method
It is welded in air chamber and uses inertia or half inert gas, security preferably, but uses limitation very big, using not universal.Dry method
During welding, welder answers wear special fire prevention, resistant to elevated temperatures protective garment.Local dry cavity is welder's welding in water, artificially will weldering
The underwater welding method that the water around area is arranged is connect, its safety measure is similar to wet method.Wet method welding is that welder is direct under water
Welding, it is most widely used without the water around weld zone is arranged, but security is worst, if the research of Underwater Welding at this stage
Certain breakthrough can be obtained in terms of SMAW underwater wet welding, then Underwater Welding field, which will have, larger to be entered
Exhibition.
Therefore the interaction mechanism of various factors in welding rod combustion process is studied, produced by being burnt preferably by welding rod
Atmosphere analyzed.Therefore, our autonomous Designs have manufactured a set of high undersea hydrostatic pressures electric arc air cavity gas collecting device.
During SMAW underwater wet welding, electric arc burns similar to submerged-arc welding under water, is in air cavity
Burning.Coating formation sleeve when welding rod burns on welding rod is stabilized air cavity, thus makes arc stability.Welding rod is set to exist
Stablize burning under water, it is necessary to one layer of certain thickness coating of painting on welding rod core, and impregnated with paraffin or other water-repellent substances
Method, makes welding rod have water proofing property.Air cavity in welding process is by hydrogen, oxygen, vapor and the gas produced that burnt by electrode coating
Body is constituted, and the atmosphere produced by welding rod burning is to study the important medium of welding rod combustion reaction, and prior art not yet has simulation water
Lower environment collects the device of welding rod combustion atmosphere.
The content of the invention
The technical problems to be solved by the invention are：Overcoming the deficiencies in the prior art, there is provided a kind of high undersea hydrostatic pressures electric arc gas
Chamber gas collecting device, it can welding surroundings under simulation water, collect the gas in electric arc air cavity.
In order to solve the above-mentioned technical problem, the technical scheme is that：A kind of high undersea hydrostatic pressures electric arc air cavity gas collecting
Device, it is made up of electric arc gas generation device and electric arc gas collection device, described electric arc gas generation device include sealing radiator,
Steel plate and the fixed station for fixing welding rod, described fixed station and steel plate are each attached to the bottom of sealing radiator, sealing radiator
Top be communicated with by gas pipeline on first pressure controller, first pressure controller the first valve be installed, it is described
Electric arc gas collection device includes air collecting pipe, gas collector and the second pressure controller being sequentially communicated by gas pipeline, adopts
In tracheae insertion sealing radiator, and the air inlet of air collecting pipe is extended in electric arc air cavity, described second pressure controller with
The bottle connection of one inert gas, the gas outlet of inert gas bottle is provided with gas bottle valve.
Further provide the concrete structure of a kind of first pressure controller and second pressure controller, the first described pressure
Force controller and second pressure controller are constituted by controller pipeline, knob, spring and balanced ball, controller pipeline and gas
Pipeline is connected, and controller valve is provided with gas pipeline connectivity part on controller pipeline, and knob is arranged on controller pipeline
Top, one end of spring is connected on knob, and the other end is connected with balanced ball.
Further, piston is provided with described gas collector, piston is moved to right-hand member completes gas one from left end
It is secondary to collect.
Water is separated out further for preventing the gas of collection to be cooled in by surrounding environment on gas production tube wall, in described gas
The two ends parallel communication having heaters of body collector and second pressure controller, the two ends of heater are respectively equipped with primary heater
Valve and secondary heater valve, the exit of described air collecting pipe are provided with gas production tube valve.
Further for the gas in discharge gas collector repeatedly, the interference to arc burning gas componant, institute are reduced
The left end for the gas collector stated is provided with a collector air intake valve and a check valve, and being connected with collector on check valve goes out
Air valve, the left end of gas collector is connected by collector air intake valve with air collecting pipe, the right-hand member of gas collector and second
Pressure controller is connected, and the right-hand member of second pressure controller is provided with the second valve.
Further for being automatically performed striking and ensureing that arc stability burns, leading screw is fixed with described sealing radiator,
Connecting rod is connected through a screw thread on one end of leading screw and motor connection, leading screw, welding rod is arranged on the lower end of connecting rod, fixed station
Being provided with is used to limit the fixation back-up ring that welding rod is moved up and down.
Further for preventing bubble from largely floating, make the stable electric arc air cavity in arc position, described steel plate of bubble
Top be provided with backstop.
Vapor will not liquefy during being further ensured that gas collecting, and described air collecting pipe is made up of glass material, and
The surface of air collecting pipe is coated with insulating mold coating, and described sealing radiator is made up of safety glass.
Further for the reduction experiment being convenient under electric arc environment, and ensure sealing, described gas collector
On be provided with outside internal layer through hole for inserting tungsten bar, internal layer through hole using glass cement sealing, glass cement is covered with outer layer cover button, outside
Layer cover is buckled is provided with outer layer through hole with internal layer through hole corresponding position.
Further, the junction on described first pressure controller with sealing radiator is provided with first pressure table, described
Gas collector and second pressure controller between second pressure table is installed, the outlet side of described gas bottle valve is installed
There is the 3rd pressure gauge.
Employ after above-mentioned technical proposal, the invention has the advantages that：
1) environment of high undersea hydrostatic pressures can be simulated, welding rod is stablized burning under water, and complete the receipts of arc burning gas
Collection；
2) by collecting and discharging the gas collected in gas collector repeatedly, inert gas can be reduced to arc burning
The interference of gas；
3) after gas collection is finished, the reduction experiment under electric arc environment can be directly carried out in gas collector, it is to avoid receive
The gas of collection is mixed into remaining gas in transfer process.
Brief description of the drawings
Fig. 1 is the theory diagram of high undersea hydrostatic pressures electric arc air cavity gas collecting device of the present invention；
Fig. 2 is the structural representation of the first pressure controller of the present invention；
Fig. 3 is the glass cement and the structural representation of outer layer cover button of the gas collector of the present invention；
In figure, 1, first pressure controller, 1-1, knob, 1-2, spring, 1-3, balanced ball, 1-4, controller valve, 1-
5th, controller pipeline, 1-6, the first valve, 2, sealing radiator, 3, first pressure table, 4, motor, 5, leading screw, 6, connecting rod, 7, solid
Determine platform, 8, steel plate, 9, electric arc air cavity, 10, air collecting pipe, 10-1, gas production tube valve, 11, backstop, 12, heater, 12-1, first
Heater valve, 12-2, secondary heater valve, the 13, the 3rd pressure gauge, 14, inert gas bottle, 14-1, gas bottle valve,
15th, second pressure controller, 15-1, the second valve, 16, second pressure table, 17, gas collector, 17-1, collector intake valve
Door, 17-2, check valve, 17-3, collector outlet valve, 18, glass cement, 19, outer layer cover button.
Embodiment
In order that present disclosure is easier to be clearly understood, it is right below according to specific embodiment and with reference to accompanying drawing
The present invention is described in further detail.
As shown in Figures 1 to 3, a kind of high undersea hydrostatic pressures electric arc air cavity gas collecting device, it is by electric arc gas generation device and electricity
Arc gas collection device is constituted, and electric arc gas generation device includes sealing radiator 2, steel plate 8 and the fixed station 7 for fixing welding rod, Gu
Determine platform 7 and steel plate 8 is each attached to the bottom of sealing radiator 2, the top of sealing radiator 2 is communicated with first pressure by gas pipeline
First valve 1-6 is installed on controller 1, first pressure controller 1, passes through the filling gas increase pressure into sealing radiator 2
To increase hydraulic pressure, regulation first pressure controller 1 can be adjusted at the pressure in sealing radiator 2, simulation different water depth under water
Environment, electric arc gas collection device includes air collecting pipe 10, gas collector 17 and the second pressure being sequentially communicated by gas pipeline
In controller 15, the insertion sealing radiator 2 of air collecting pipe 10, and the air inlet of air collecting pipe 10 is set to extend in electric arc air cavity 9, the second pressure
Force controller 15 is connected with inert gas bottle 14, and the gas outlet of inert gas bottle 14 is provided with gas bottle valve 14-1, inertia
Gas bottle 14 is argon bottle.
As shown in Figure 1, 2, first pressure controller 1 and second pressure controller 15 are by controller pipeline 1-5, knob 1-
1st, spring 1-2 and balanced ball 1-3 compositions, controller pipeline 1-5 is connected with gas pipeline, on controller pipeline 1-5 and gas
Provided with controller valve 1-4 at pipeline communication, knob 1-1 is arranged on controller pipeline 1-5 top, and spring 1-2 one end connects
It is connected on knob 1-1, the other end is connected with balanced ball 1-3.Need to be debugged in advance according to the pressure of setting when enabling, in regulation
The size of square knob 1-1 control pressures, when pressure is more than debugging pressure, gas push balanced ball 1-3 arranges unnecessary gas
Run out, pressure is maintained at required steady state value, valve is closed when stopping using, device turns into simple breather pipe, and empty
Gas can not independently enter sealing radiator 2.
As shown in figure 1, being provided with piston in gas collector 17, piston is moved to right-hand member from left end and completes gas once
Collect.
As shown in figure 1, in gas collector 17 and the two ends parallel communication having heaters 12 of second pressure controller 15, plus
The two ends of hot device 12 are respectively equipped with primary heater valve 12-1 and secondary heater valve 12-2, and the exit of air collecting pipe 10 is set
There is gas production tube valve 10-1.
As shown in figure 1, the left end of gas collector 17 is provided with an a collector air intake valve 17-1 and check valve 17-
Collector outlet valve 17-3 is connected with 2, check valve 17-2, the left end of gas collector 17 passes through collector air intake valve
17-1 is connected with air collecting pipe 10, and the right-hand member of gas collector 17 is connected with second pressure controller 15, second pressure controller 15
Right-hand member be provided with the second valve 15-1.
As shown in figure 1, being fixed with leading screw 5 in sealing radiator 2, one end of leading screw 5 is connected with motor 4, and spiral shell is passed through on leading screw 5
Line is connected with connecting rod 6, and welding rod is arranged on the lower end of connecting rod 6, and fixed station 7 is used to limit welding rod up and down provided with two
The fixation back-up ring of motion, welding rod is lain in a horizontal plane on fixed station 7, and the fortune of welding rod up and down is limited by two fixed back-up rings
It is dynamic, welding rod movement track is constrained by fixed station 7, drives leading screw 5 to promote welding rod to be moved right with burn-off rate by motor 4, with
Ensure arc stability burning, the motion of motor 4 makes welding rod advance and the contacting ignition arc of steel plate 8, then to left movement, completes striking
Journey, last welding rod is advanced with burn-off rate, thus is avoided that influence of the droplet transfer to welding stabilization process.
As shown in figure 1, the top of electric arc air cavity 9 is provided with backstop 11 on steel plate 8, bubble can be prevented largely to float, made
Bubble is stable in arc position.
Because the gas of collection is high-temperature gas and contains vapor, therefore air collecting pipe 10 is made up of glass material, and adopts
The surface of tracheae 10 is coated with insulating mold coating, and gas pipeline also wraps up heat preserving and insulating material, it is ensured that during gas collecting
Vapor will not be liquefied by the cooling of ambient water, so that the ratio of impact analysis arc region atmosphere, sealing radiator 2 is by tempering glass
Glass is made, with the situation for guaranteeing to bear enough pressure and observing experiment at any time.
Glass is used as shown in figure 3, being provided with gas collector 17 outside the internal layer through hole for inserting tungsten bar, internal layer through hole
Glue 18 is sealed, and the exterior measuring of glass cement 18 is covered with outer layer cover button 19, outer layer cover button 19 is provided with outer layer through hole with internal layer through hole corresponding position.
As shown in figure 1, being provided with first pressure table 3, gas with the junction of sealing radiator 2 on first pressure controller 1
Second pressure table 16 is installed, gas bottle valve 14-1 outlet side is provided between collector 17 and second pressure controller 15
3rd pressure gauge 13.
The operation principle of the present invention is as follows：By taking the simulated test under h meters of depth of water environment as an example
The density p of seawater is 1.03 × 103kg/m3, gravity acceleration g is 9.8N/kg, then pressure p=ρ gh=1.03 ×
103kg/m3×9.8N/kg×h≈0.01*h Mpa
1) setting first pressure controller 1 is 0.01*h Mpa, and second pressure controller 15 is 0.01*h Mpa；
2) the first valve 1-6 is opened, the second valve 15-1, gas production tube valve 10-1 is closed, primary heater valve is opened
12-1, secondary heater valve 12-2, collector air intake valve 17-1, collector outlet valve 17-3, gas bottle valve 14-1,
Start logical argon gas three minutes, the air in discharge gas collector 17, heater 12 and gas pipeline；
3) collector outlet valve 17-3, collector air intake valve 17-1 are closed, gas production tube valve 10-1 is opened, continues logical
Argon gas five minutes, removes the water in air collecting pipe 10；
4) the first valve 1-6 is closed, heater 12 is begun to warm up, more than 170 degrees Celsius of heating-up temperature, continues logical argon gas ten
More than minute, make the pressure that setting is reached in sealing radiator 2, and remove the water of the tube wall of air collecting pipe 10；
5) the second valve 15-1, collector outlet valve 17-3 are opened, until piston reaches the most left of gas collector 17
End, prepares to collect arcing gas；
6) welding rod 9 starts welding, and collector outlet valve 17-3, the second valve 15-1, secondary heater valve are closed successively
Door 12-2, primary heater valve 12-1, gas bottle valve 14-1, close heater 12, open collector air intake valve 17-1；
7) after a certain amount of gas is collected into, collector air intake valve 17-1 is closed, gas bottle valve 14- is opened successively
1st, the second valve 15-1, collector outlet valve 17-3, piston reach after high order end shutoff valve collector outlet valve 17- successively
3rd, the second valve 15-1, gas bottle valve 14-1, open collector air intake valve 17-1；
8) repeat step 7 three times, reduce the ratio that argon gas accounts for collection arc atmosphere gas；
9) it is collected into after enough gas and closes gas production tube valve 10-1, collector air intake valve 17-1, gas collector
Gas in 17 is the gas for needing to analyze；
10) first pressure controller 1, second pressure controller 15 are closed, the first valve 1-6 is opened, experimental facilities is cleared up.
The present invention can simulate the environment of high undersea hydrostatic pressures, welding rod is stablized burning under water, and complete arc burning gas
Collection；By collecting and discharging the gas collected in gas collector 17 repeatedly, inert gas can be reduced to arc burning
The interference of gas；After gas collection is finished, the reduction experiment under electric arc environment can be directly carried out in gas collector 17, is kept away
The gas for exempting from collection is mixed into remaining gas in transfer process.
Particular embodiments described above, pair present invention solves the technical problem that, technical scheme and beneficial effect carry out
It is further described, should be understood that the specific embodiment that the foregoing is only the present invention, is not limited to this
Invention, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. should be included in this hair
Within bright protection domain.
Claims (10)
1. a kind of high undersea hydrostatic pressures electric arc air cavity gas collecting device, it is characterised in that：It is by electric arc gas generation device and electric arc gas
Collection device is constituted, and described electric arc gas generation device includes sealing radiator (2), steel plate (8) and the fixation for fixing welding rod
Platform (7), described fixed station (7) and steel plate (8) is each attached to the bottom of sealing radiator (2), and sealing radiator passes through at the top of (2)
Gas pipeline is communicated with first pressure controller (1), first pressure controller (1) and is provided with the first valve (1-6), described
Electric arc gas collection device includes air collecting pipe (10), gas collector (17) and the second pressure control being sequentially communicated by gas pipeline
In device (15) processed, air collecting pipe (10) insertion sealing radiator (2), and the air inlet of air collecting pipe (10) is set to extend to electric arc air cavity (9)
Interior, described second pressure controller (15) is connected with inert gas bottle (14), and the gas outlet of inert gas bottle (14) is installed
There is gas bottle valve (14-1).
2. high undersea hydrostatic pressures electric arc air cavity gas collecting device according to claim 1, it is characterised in that：The first described pressure
Force controller (1) and second pressure controller (15) are by controller pipeline (1-5), knob (1-1), spring (1-2) and balance
Ball (1-3) is constituted, and controller pipeline (1-5) is connected with gas pipeline, with gas pipeline connectivity part on controller pipeline (1-5)
Provided with controller valve (1-4), knob (1-1) is arranged on controller pipeline (1-5) top, one end connection of spring (1-2)
On knob (1-1), the other end is connected with balanced ball (1-3).
3. high undersea hydrostatic pressures electric arc air cavity gas collecting device according to claim 1 or 2, it is characterised in that：Described gas
Piston is provided with body collector (17), piston is moved to the once collection that right-hand member completes gas from left end.
4. high undersea hydrostatic pressures electric arc air cavity gas collecting device according to claim 3, it is characterised in that：In described gas
The two ends parallel communication having heaters (12) of collector (17) and second pressure controller (15), the two ends difference of heater (12)
Provided with primary heater valve (12-1) and secondary heater valve (12-2), the exit of described air collecting pipe (10), which is provided with, adopts
Tracheae valve (10-1).
5. high undersea hydrostatic pressures electric arc air cavity gas collecting device according to claim 4, it is characterised in that：Described gas is received
The left end of storage (17), which is provided with a collector air intake valve (17-1) and a check valve (17-2), check valve (17-2), to be connected
Collector outlet valve (17-3) is connected to, the left end of gas collector (17) passes through collector air intake valve (17-1) and air collecting pipe
(10) connect, the right-hand member of gas collector (17) is connected with second pressure controller (15), the right side of second pressure controller (15)
End is provided with the second valve (15-1).
6. high undersea hydrostatic pressures electric arc air cavity gas collecting device according to claim 1, it is characterised in that：Described sealing water
Leading screw (5) is fixed with case (2), one end of leading screw (5) is connected with motor (4), and leading screw has been connected through a screw thread connecting rod on (5)
(6), welding rod is arranged on the lower end of connecting rod (6), and fixed station (7), which is provided with, to be used to limit the fixed gear that welding rod is moved up and down
Circle.
7. the high undersea hydrostatic pressures electric arc air cavity gas collecting device according to claim 1 or 6, it is characterised in that：Described steel
Backstop (11) is provided with plate (8) above electric arc air cavity (9).
8. the high undersea hydrostatic pressures electric arc air cavity gas collecting device according to claim 1 or 4 or 5, it is characterised in that：Described
Air collecting pipe (10) is made up of glass material, and the surface of air collecting pipe (10) is coated with insulating mold coating, described sealing radiator
(2) it is made up of safety glass.
9. high undersea hydrostatic pressures electric arc air cavity gas collecting device according to claim 3, it is characterised in that：Described gas is received
It is provided with outside the internal layer through hole for inserting tungsten bar, internal layer through hole and is sealed using glass cement (18) on storage (17), glass cement (18)
Exterior measuring is covered with outer layer cover button (19), outer layer cover button (19) is provided with outer layer through hole with internal layer through hole corresponding position.
10. high undersea hydrostatic pressures electric arc air cavity gas collecting device according to claim 1, it is characterised in that：Described first
First pressure table (3), described gas collector (17) are installed on pressure controller (1) with the junction of sealing radiator (2)
Second pressure table (16) is installed between second pressure controller (15), the outlet side of described gas bottle valve (14-1) is pacified
Equipped with the 3rd pressure gauge (13).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106525841B (en) * | 2016-12-22 | 2019-06-21 | 新沂市新维气体有限公司 | A kind of chemical industry station-service gas initial characterization detection device |
| CN107966333B (en) * | 2017-12-14 | 2023-07-07 | 中国科学院海洋研究所 | Deep sea in-situ gas pressure maintaining sampling system |
| CN108857000A (en) * | 2018-09-17 | 2018-11-23 | 山东船舶技术研究院 | A kind of collection underwater wet welding electric arc ambient gas device and its application method |
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