CN107376144A - Closed respiratory system between being picked up for monoblock type inert gas-shielded arc welding - Google Patents
Closed respiratory system between being picked up for monoblock type inert gas-shielded arc welding Download PDFInfo
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- CN107376144A CN107376144A CN201710629476.5A CN201710629476A CN107376144A CN 107376144 A CN107376144 A CN 107376144A CN 201710629476 A CN201710629476 A CN 201710629476A CN 107376144 A CN107376144 A CN 107376144A
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B7/00—Respiratory apparatus
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
- A62B9/02—Valves
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- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Arc Welding In General (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
Abstract
Closed respiratory system between being picked up for monoblock type inert gas-shielded arc welding includes the airtight clothes with welding overcoat, the persons wear that supply and demand will enter in airtight welding workshop；Air supply system, air in gas cylinder is delivered in airtight clothes by supply air line；Gas extraction system, the airtight internal respiration waste gas that takes is drained into the buffer outside workshop by gas exhaust piping, discharge hoses road is connected to either inside by being worn outside workshop, gas exhaust piping outside workshop is provided with the vacuum generator by drive of high-pressure gas, and vacuum needed for exhaust is provided for gas exhaust piping；Pressure sensor, it is provided on the discharge hoses section outside workshop；Oxygen concentration sensor, it is provided on the air supply pipe section outside workshop；Computer control unit, outside workshop, for controlling vacuum driving gas valve, collection pressure sensor and oxygen concentration sensor signal.The present invention both ensure that the eupnea of operating personnel, improve the protecting effect of inert gas again.
Description
Technical field
The present invention relates to welding processing technical field, and in particular to the people between being picked up for monoblock type inert gas-shielded arc welding
Member's closed respiratory system.
Background technology
In the heat treatment and welding process of some special material structures, in order to controlling objectionable impurities (such as hydrogen, oxygen, nitrogen)
Content, prevents structure moulding and toughness declines, and is typically protected using the condition of high-purity inert gas, non-oxygen flux or vacuum
Weld dimensions.And for large-sized structural parts and complicated weld seam, then preferably way is to construct large-scale airtight workshop, car
The interior inert gas for being full of high-purity, personnel carry out the weld job of large-sized structural parts in workshop.Therefore, personnel need to be equipped with
Special respiratory system, the physiological function and life security of its eupnea were both ensured, and breathing gas need to have been avoided to spill into car again
Between inert gas environment and cause environmental pollution.
The breathing equipment being presently used in poisonous, harmful or anaerobic environment mainly has two kinds：First, oxygen breathing apparatus, people
Member directly dresses the respirator, breathing gas closed cycle, built-in oxygen recovery chemical agent and carbon dioxide and vapor
Medicament is absorbed, this kind of device continuous use time is shorter, and personnel's heavy burden is larger, and breathing gas is that oxygen easily causes oxygen poisoning, no
It is adapted to continuous wearing operation for a long time；Second, self-sustaining or long-tube breathing equipment, staff back carries air bottle or remote
End pressure supplies, and the waste gas of exhalation is discharged to surrounding environment by check valve, and the use of this kind of device can pollute the inertia in workshop
Gas shield environment.Therefore, above two breathing equipment is not suitable for high concentration inert gas environment.
The content of the invention
The applicant is improved for disadvantages mentioned above of the prior art, there is provided one kind is used for monoblock type inert gas and protected
The closed respiratory system of welding shop is protected, it both ensure that the eupnea of operating personnel, improve the guarantor of inert gas again
Protect effect, the high concentration that is particularly suitable for use in inert gas environment welding shop.
Technical scheme is as follows：
It is of the present invention for monoblock type inert gas-shielded arc welding pick up between closed respiratory system, including：
Closed welds protecting equipment, including the airtight clothes with welding overcoat, supply and demand will enter airtight welding workshop
Interior operating personnel's wearing, airtight clothes are provided with inlet suction port, exhaust joint；
Air supply system, including the gas cylinder one with bottle valve one, the gas outlet of gas cylinder one pass through supply air line
It is connected with inlet suction port, supply air line is provided with supply main valve one, stop valve one, and supply main valve one, stop valve one are located at respectively
Airtight welding workshop it is outside, internal；
Gas extraction system, including the gas exhaust piping being connected with exhaust joint, it is sequentially provided with gas exhaust piping and cuts by discharge directions
Only valve two, buffer, vacuum generator, vacuum driving gas solenoid valve, supply main valve two, the gas cylinder with bottle valve two
Two, the gas exhaust piping line segments between stop valve two and buffer connect with airtight wear in airtight welding workshop；
Pressure sensor, it is provided at the supply air line outside airtight welding workshop, in gas exhaust piping line segments；
Oxygen concentration sensor, it is provided in the supply air line line segments outside airtight welding workshop；
Computer control unit, it is electric with vacuum driving gas respectively by controlling cable outside airtight welding workshop
Magnet valve, pressure sensor, oxygen concentration sensor connection.
Its further technical scheme is：
Supply air line line segments between stop valve one and inlet suction port are connected with emergency line by triple valve one, meet an urgent need
Pipeline is connected with the gas outlet of the gas cylinder three with bottle valve three；Blast pipe between the exhaust joint and stop valve two
Road line segments are provided with triple valve two, and the one outlet of triple valve two leads directly to airtight welding either inside.
In supply air line line segments between the stop valve one and triple valve one, the triple valve two and stop valve two it
Between line segments on be equipped with snap joint one, the snap joint one is that both-end turns off formula joint.
In supply air line line segments between the supply main valve one and airtight welding workshop, supply main valve two and vacuum hair
Pressure reducer is equipped with gas exhaust piping line segments between raw device, supplies the supply air line pipe between main valve one and gas cylinder one
In gas exhaust piping line segments on section, between supply main valve two and gas cylinder two, two pressure reducers pick up close to pressure-tight weld
Between side supply air line line segments and gas exhaust piping line segments on be equipped with a pressure sensor.
Emergency line line segments between the triple valve one and gas cylinder three are provided with pressure reducer.
The supply air line line segments between pressure reducer and airtight welding workshop on supply air line are provided with safety valve, flow
Regulating valve, flowmeter, the gas exhaust piping line segments between pressure reducer and vacuum generator on gas exhaust piping are provided with safety valve,
Gas exhaust piping between buffer and airtight welding workshop is provided with flowmeter；Safety valve, flow control valve, flowmeter pass through
Controlling cable is connected with computer control unit.
The buffer is provided with vacuum pressure sensor, and vacuum pressure sensor is controlled by controlling cable and computer
Unit connects.
Supply air line line segments between the triple valve one and inlet suction port are provided with check valve.
Voice-communication device is provided with the airtight clothes, voice-communication device passes through communication cable and computer control unit
Connection.
The technique effect of the present invention：
Present invention can be implemented in the eupnea of personnel in high concentration inert gas environment workshop and welding safeguard function, it is
System clear principle, building block is ripe, emergency backup has been carried out to gas supply-discharge system, security of system and reliability are higher.
Brief description of the drawings
Fig. 1 be it is of the present invention for monoblock type inert gas-shielded arc welding pick up between closed respiratory system structure it is former
Reason is schemed, and double dot dash line is airtight welding workshop in figure, and dotted line is controlling cable, and the closed welding protecting equipment regards for the back side
Figure.
Fig. 2 is the front view that closed of the present invention welds protecting equipment.
Wherein：1st, airtight clothes；2nd, overcoat is welded；3rd, airtight welding workshop；4th, inlet suction port；5th, exhaust joint；6th, gas
Cylinder valve one；7th, gas cylinder one；8th, supply air line；9th, main valve one is supplied；10th, stop valve one；11st, gas exhaust piping；12nd, stop valve
Two；13rd, vacuum generator；14th, vacuum driving gas solenoid valve；15th, main valve two is supplied；16th, bottle valve two；17th, gas cylinder
Two；18th, pressure sensor；19th, oxygen concentration sensor；20th, computer control unit；21st, triple valve one；22nd, emergency line；
23rd, bottle valve three；24th, gas cylinder three；25th, triple valve two；26th, snap joint one；27th, pressure reducer；28th, safety valve；29th, flow
Adjustable valve；30th, flowmeter；31st, buffer；32nd, vacuum pressure sensor；33rd, check valve；34th, voice-communication device；35、
Weld protective glasses；36th, snap joint two；37th, pipeline crossing cabin part.
Embodiment
Below in conjunction with the accompanying drawings, the embodiment of the present invention is illustrated.
See Fig. 1, the closed respiratory system of the present invention between monoblock type inert gas-shielded arc welding picks up includes：
Closed welds protecting equipment, including takes 1 with welding the airtight of overcoat 2, and supply and demand will pick up into pressure-tight weld
Between operating personnel's wearing in 3, it is airtight to take 1 and be provided with inlet suction port 4, exhaust joint 5.Specifically, it is airtight to take 1 as whole body parcel
Formula, i.e., the positions such as head trunk and four limbs need to all be wrapped up, except persons wear's mouth is the integrated manufacture processing of whole body, worn
Wear mouth and leave airtight slide fastener, after persons wear, sealed with airtight slide fastener, the airtight Inner Constitution one for taking 1 has
The airtight breathing space of one constant volume, there is a small amount of breathing air, with the steady of the pressure that ensures respiration；Fig. 2 is seen, in operator
Member's facial positions open up the welding protective glasses 35 at big visual angle, and the broad visual field is provided for weld job, and inlet suction port 4, exhaust connect
First 5 be preferably provided at it is airtight take 1 back brain position, be respectively used to be connected with air supply system and gas extraction system；Welding overcoat 2 can
Whole body shading type or partial occlusion formula are arranged as required into, for protecting heat, light and spark caused by weld job；Airtight clothes
Voice-communication device 34 is provided with 1, voice-communication device 34 is usually loudspeaker and microphone, and voice-communication device 34 passes through logical
News cable is connected with computer control unit 20, and for the ease of redundant labor transfer station, the communication cable is arranged to two-part line
Cable, wherein one section of cable be fixed on it is airtight take on 1, and on this section of cable set snap joint 2 36, for positioned at pressure-tight weld
Staff in 3 between picking up quickly connects or cut-out both ends communication cable.
Air supply system, including the gas cylinder 1 with bottle valve 1, the gas outlet of gas cylinder 1 pass through air supply pipe
Road 8 is connected with inlet suction port 4, and supply air line 8 is provided with supply main valve 1, stop valve 1, supply main valve 1, stop valve one
10 respectively positioned at the outside, internal of airtight welding workshop 3；Further, emergent supply air line is additionally provided with, in foregoing supply air line
8 occur using during the emergent operating modes such as supply failure, specifically, the pipeline of supply air line 8 between stop valve 1 and inlet suction port 4
Section is connected with emergency line 22 by triple valve 1, and emergency line 22 goes out with the gas cylinder 3 24 with bottle valve 3 23
Gas port connects, and this emergency line is located in airtight welding workshop 3, carried by staff；
Gas extraction system, including the gas exhaust piping 11 being connected with exhaust joint 5, set successively by discharge directions on gas exhaust piping 11
Have stop valve 2 12, buffer 31, vacuum generator 13, vacuum driving gas solenoid valve 14, supply main valve 2 15, with gas cylinder
The gas cylinder 2 17 of valve 2 16, the line segments of gas exhaust piping 11 and airtight welding workshop between stop valve 2 12 and buffer 31
3 airtight wear connect；Further, emergent exhaust passage is additionally provided with, the emergent operating modes such as supply failure occurs in foregoing gas exhaust piping 11
When use, specifically, the line segments of gas exhaust piping 11 between exhaust joint 5 and stop valve 2 12 are provided with triple valve 2 25, three
The one outlet of port valve 2 25 is led directly to inside airtight welding workshop 3, and when needing emergent exhaust, staff passes through operation
The outlet that the air inlet of triple valve 2 25 should connect with the inside of airtight welding workshop 3, you can be immediately discharged to gas airtight
In welding shop 3；The setting of vacuum generator 13, certain vacuum degree can be persistently created in gas exhaust piping 11, is established airtight
The pressure difference of the closed breathing space of staff in 1 and gas exhaust piping 11 is taken, realizes that personnel breathe the discharge of waste gas.Vacuum generator
13 driving source of the gas is gas cylinder 2 17, when the vacuum of gas exhaust piping 11 drops to certain value, vacuum driving gas electricity
Magnet valve 14 is opened, and the inner high voltage air of gas cylinder 2 17 delivers to vacuum generator 13 through supplying the control of main valve 2 15, drives vacuum
Generator 13 works.Buffer 31 is used to ensure the steady of pressure in gas exhaust piping 11, and buffer 31 is provided with vacuum pressure biography
Sensor 32, vacuum pressure sensor 32 are connected by controlling cable with computer control unit 20, the gas that gas exhaust piping 11 is discharged
Body is ultimately discharged into buffer 31.
Pressure sensor 18, it is provided at supply air line 8 outside airtight welding workshop 3, outside airtight welding workshop 3
In the line segments of gas exhaust piping 11 in portion；Further, in order that the air pressure that must be conveyed and final conveying purpose environmental pressure
Match, in the line segments of supply air line 8 between supply main valve 1 and airtight welding workshop 3, supply main valve 2 15 and vacuum
The pipeline of emergency line 22 in the line segments of gas exhaust piping 11 between generator 13, between triple valve 1 and gas cylinder 3 24
Pressure reducer 27 is equipped with section, is supplied in the line segments of supply air line 8 between main valve 1 and gas cylinder 1, supply main valve two
Two pressure reducers 27 in the line segments of gas exhaust piping 11 between 15 and gas cylinder 2 17, outside airtight welding workshop 3
A pressure sensing is equipped with the line segments of supply air line 8 and the line segments of gas exhaust piping 11 of the side in airtight welding workshop 3
Device 18.Respiratory system of the present invention preferably uses four pressure sensors 18, before monitoring air supply pipe 8 and the decompression of gas exhaust piping 11
Pressure afterwards；
Oxygen concentration sensor 19, it is provided in the line segments of supply air line 8 outside airtight welding workshop 3；
Computer control unit 20, outside airtight welding workshop 3, by controlling cable respectively with vacuum driving gas
Magnetic valve 14, pressure sensor 18, oxygen concentration sensor 19 connect.
Gas cylinder 1 and gas cylinder 2 17 can by the air compressor machine 38 that additionally sets and
For the ease of staff's transfer welding post, the part line segments of supply air line 8 and gas exhaust piping 11 are fixed on
It is airtight to take on 1, i.e., the line segments of supply air line 8 between triple valve 1 and inlet suction port 4 be fixed on it is airtight take outside 1, threeway
The line segments of gas exhaust piping 11 between valve 2 25 and exhaust joint 5 be also secured at it is airtight take on 1, be fixed on airtight clothes to realize
Discharge hoses section on 1 is quickly connected with cutting off, in stop valve 1 with on-fixed in the airtight discharge hoses section taken on 1
It is all provided with line segments in the line segments of supply air line 8 between triple valve 1, between triple valve 2 25 and stop valve 2 12
There is snap joint 1, snap joint 1 is using existing both-end shut-off formula joint, and when joint disconnects, two lateral lines are automatic
Close, prevent that inner air tube is excessive.
The line segments of supply air line 8 between pressure reducer 27 and airtight welding workshop 3 on supply air line 8 are provided with safety valve
28th, flow control valve 29, flowmeter 30, the gas exhaust piping 11 between pressure reducer 27 and vacuum generator 13 on gas exhaust piping 11
Line segments are provided with safety valve 28, and the gas exhaust piping 11 between buffer 31 and airtight welding workshop 3 is provided with flowmeter 30；Peace
Full valve 28, flow control valve 29, flowmeter 30 are connected by controlling cable with computer control unit 20.Safety valve 28 is set
Put, may be such that respective line is released automatically in superpressure, ensure safety；Flow control valve 29, flowmeter 30 are detectable and adjust
Flow.
In order to avoid the refluence of supply air line 8 and the internal respiration gas of emergency line 22, in triple valve 1 and inlet suction port 4
Between the line segments of supply air line 8 be provided with check valve 33.
Supply air line 8, gas exhaust piping 11, the communication cable worn with airtight welding workshop 3 connect when, worn using pipeline
Cabin part 37 connects to realize that the sealing of each pipeline is worn, pipeline crossing cabin part 37 for ship pipeline system important accessory it.
Staff dresses the closed welding protecting equipment, into airtight welding workshop 3, connects supply air line 8
With the snap joint 1 on gas exhaust piping 11, normal gas supply-discharge system is started, gas supply-discharge system, computer control unit and logical
After speech communication confirms normally, the airtight slide fastener is closed, carries out airtight, the gas-tight door in closing airtight welding workshop 3, pressure-tight weld
Conversion of the air to inert gas environment is carried out by modes such as purgings in 3 between picking up, after inert gas concentration meets to require,
Personnel start weld job.
During weld job, pressure-air in gas cylinder 1 successively through bottle valve 1, supply main valve 1, subtract
Depressor 27, flow control valve 29, flowmeter 30, oxygen concentration sensor 19, the pipeline crossing cabin part 37 on supply air line 1, stop valve
One 10, the snap joint 1 on supply air line 1, triple valve 1, inlet suction port 4 deliver to it is airtight take in 1, there is emergent operating mode
When, supplied using the gas cylinder 3 24 and emergency line 22 carried with, normal and emergent supply can be achieved；High pressure gas
Vacuum generator 13 is delivered to after the pressure-air decompression of bottle 2 17 and drives vacuum generator 13, so as to persistently be created for gas exhaust piping
Certain vacuum degree, under vacuum, the airtight breathing waste gas for taking personnel in 1 is successively through exhaust joint 5, triple valve 2 25, row
The pipeline crossing cabin part 37 and flowmeter 30 in snap joint 1, stop valve 2 12, gas exhaust piping 11 on air pipe 1, is drained into
In buffer 31, when there is emergent operating mode, waste gas can be directly discharged to by personnel by the emergent exhaust outlet of triple valve 2 25
In airtight welding workshop 3.
During weld job, personnel can shift welding post by the snap joint 1 of gas supply-discharge system.Welding is made
After industry terminates, the gas-tight door in airtight welding workshop 3 is opened, after normal air environment is recovered in workshop, sloughs the closed
Weld protecting equipment.
Above description is explanation of the invention, is not the restriction to invention, limited range of the present invention is referring to right
It is required that within protection scope of the present invention, any type of modification can be made.
Claims (9)
1. the closed respiratory system between being picked up for monoblock type inert gas-shielded arc welding, it is characterised in that including：
Closed welds protecting equipment, including the airtight clothes (1) with welding overcoat (2), supply and demand will pick up into pressure-tight weld
Between operating personnel's wearing in (3), airtight clothes (1) are provided with inlet suction port (4), exhaust joint (5)；
Air supply system, including the gas cylinder one (7) with bottle valve one (6), the gas outlet of gas cylinder one (7) pass through supply
Pipeline (8) is connected with inlet suction port (4), and supply air line (8) is provided with supply main valve one (9), stop valve one (10), supplies main valve
One (9), stop valve one (10) are respectively positioned at the outside, internal of airtight welding workshop (3)；
Gas extraction system, including the gas exhaust piping (11) being connected with exhaust joint (5), on gas exhaust piping (11) by discharge directions successively
Provided with stop valve two (12), buffer (31), vacuum generator (13), vacuum driving gas solenoid valve (14), supply main valve two
(15), the gas cylinder two (17) with bottle valve two (16), the gas exhaust piping between stop valve two (12) and buffer (31)
(11) line segments connect with airtight welding workshop (3) airtight wear；
Pressure sensor (18), it is provided at the outside supply air line (8) in airtight welding workshop (3), gas exhaust piping (11) pipeline
Duan Shang；
Oxygen concentration sensor (19), it is provided in outside supply air line (8) line segments in airtight welding workshop (3)；
Computer control unit (20), it is outside positioned at airtight welding workshop (3), by controlling cable respectively with vacuum driving gas
Magnetic valve (14), pressure sensor (18), oxygen concentration sensor (19) connection.
2. as described in claim 1 be used for monoblock type inert gas-shielded arc welding pick up between closed respiratory system, its feature
It is：Supply air line (8) line segments between stop valve one (10) and inlet suction port (4) are connected with by triple valve one (21) should
Anxious pipeline (22), emergency line (22) are connected with the gas outlet of the gas cylinder three (24) with bottle valve three (23)；The row
Gas exhaust piping (11) line segments between gas joint (5) and stop valve two (12) are provided with triple valve two (25), triple valve two
(25) it is internal that one outlet leads directly to airtight welding workshop (3).
3. as described in claim 2 be used for monoblock type inert gas-shielded arc welding pick up between closed respiratory system, its feature
It is：In supply air line (8) line segments between the stop valve one (10) and triple valve one (21), the triple valve two (25)
Snap joint one (26) is equipped with line segments between stop valve two (12), the snap joint one (26) turns off for both-end
Formula joint.
4. as described in claim 1 be used for monoblock type inert gas-shielded arc welding pick up between closed respiratory system, its feature
It is：In supply air line (8) line segments between the supply main valve one (9) and airtight welding workshop (3), supply main valve two
(15) pressure reducer (27), supply main valve one (9) are equipped with gas exhaust piping (11) line segments between vacuum generator (13)
In supply air line (8) line segments between gas cylinder one (7), between supply main valve two (15) and gas cylinder two (17)
In gas exhaust piping (11) line segments, two pressure reducers (27) close to the side in airtight welding workshop (3) supply air line (8) pipeline
A pressure sensor (18) is equipped with section and gas exhaust piping (11) line segments.
5. as described in claim 2 be used for monoblock type inert gas-shielded arc welding pick up between closed respiratory system, its feature
It is：Emergency line (22) line segments between the triple valve one (21) and gas cylinder three (24) are provided with pressure reducer
(27)。
6. as described in claim 4 be used for monoblock type inert gas-shielded arc welding pick up between closed respiratory system, its feature
It is：Supply air line (8) line segments between pressure reducer (27) and airtight welding workshop (3) on supply air line (8) are provided with
Safety valve (28), flow control valve (29), flowmeter (30), pressure reducer (27) and vacuum generator on gas exhaust piping (11)
(13) gas exhaust piping (11) line segments between are provided with safety valve (28), between buffer (31) and airtight welding workshop (3)
Gas exhaust piping (11) be provided with flowmeter (30)；Safety valve (28), flow control valve (29), flowmeter (30) pass through control
Cable is connected with computer control unit (20).
7. as described in claim 1 be used for monoblock type inert gas-shielded arc welding pick up between closed respiratory system, its feature
It is：The buffer (31) is provided with vacuum pressure sensor (32), vacuum pressure sensor (32) by controlling cable with
Computer control unit (20) connects.
8. as described in claim 2 be used for monoblock type inert gas-shielded arc welding pick up between closed respiratory system, its feature
It is：Supply air line (8) line segments between the triple valve one (21) and inlet suction port (4) are provided with check valve (33).
9. as described in claim 1 be used for monoblock type inert gas-shielded arc welding pick up between closed respiratory system, its feature
It is：Voice-communication device (34) is provided with the airtight clothes (1), voice-communication device (34) passes through communication cable and computer
Control unit (20) connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710629476.5A CN107376144B (en) | 2017-07-28 | 2017-07-28 | Closed breathing system for integral inert gas protection welding workshop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710629476.5A CN107376144B (en) | 2017-07-28 | 2017-07-28 | Closed breathing system for integral inert gas protection welding workshop |
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| Publication Number | Publication Date |
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| CN107376144A true CN107376144A (en) | 2017-11-24 |
| CN107376144B CN107376144B (en) | 2020-04-03 |
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ID=60341951
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710629476.5A Active CN107376144B (en) | 2017-07-28 | 2017-07-28 | Closed breathing system for integral inert gas protection welding workshop |
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| CN (1) | CN107376144B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110841210A (en) * | 2019-10-12 | 2020-02-28 | 哈尔滨飞机工业集团有限责任公司 | Electric control type centralized oxygen system |
| CN111420319A (en) * | 2020-04-01 | 2020-07-17 | 北京航天新风机械设备有限责任公司 | Positive pressure protection hood intelligent monitoring system based on Bluetooth transmission |
| CN111791002A (en) * | 2020-07-27 | 2020-10-20 | 中国船舶科学研究中心 | Non-ferrous metal gas full-protection welding workshop and operation method thereof |
| CN113639199A (en) * | 2021-08-13 | 2021-11-12 | 烟台宏远载人压力舱工程技术研究院有限公司 | Air supply system of motor-driven lifesaving transfer cabin |
| CN115817867A (en) * | 2022-12-30 | 2023-03-21 | 中国科学院空间应用工程与技术中心 | Online maintenance operation box for space station payload |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111420319A (en) * | 2020-04-01 | 2020-07-17 | 北京航天新风机械设备有限责任公司 | Positive pressure protection hood intelligent monitoring system based on Bluetooth transmission |
| CN111791002A (en) * | 2020-07-27 | 2020-10-20 | 中国船舶科学研究中心 | Non-ferrous metal gas full-protection welding workshop and operation method thereof |
| CN111791002B (en) * | 2020-07-27 | 2022-06-21 | 中国船舶科学研究中心 | Non-ferrous metal gas full-protection welding workshop and operation method thereof |
| CN113639199A (en) * | 2021-08-13 | 2021-11-12 | 烟台宏远载人压力舱工程技术研究院有限公司 | Air supply system of motor-driven lifesaving transfer cabin |
| CN115817867A (en) * | 2022-12-30 | 2023-03-21 | 中国科学院空间应用工程与技术中心 | Online maintenance operation box for space station payload |
| CN115817867B (en) * | 2022-12-30 | 2023-11-24 | 中国科学院空间应用工程与技术中心 | On-line maintenance operation box for space station effective load |
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