CN112524492A - Reliable disconnected nitrogen gas of multi-functional cylinder sweeps device fast - Google Patents
Reliable disconnected nitrogen gas of multi-functional cylinder sweeps device fast Download PDFInfo
- Publication number
- CN112524492A CN112524492A CN202011521823.0A CN202011521823A CN112524492A CN 112524492 A CN112524492 A CN 112524492A CN 202011521823 A CN202011521823 A CN 202011521823A CN 112524492 A CN112524492 A CN 112524492A
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- Prior art keywords
- pipe
- cylinder
- gas
- locking
- nitrogen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 229910001873 dinitrogen Inorganic materials 0.000 title claims abstract description 6
- 239000007789 gas Substances 0.000 claims abstract description 59
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 43
- 238000004880 explosion Methods 0.000 claims description 11
- 238000010926 purge Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 abstract description 5
- 238000010168 coupling process Methods 0.000 abstract description 5
- 238000005859 coupling reaction Methods 0.000 abstract description 5
- 238000007664 blowing Methods 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model provides a reliable disconnected nitrogen gas of multi-functional cylinder sweeps device fast, it includes: the double-function air cylinder is arranged on the left side of the shell, an air cylinder pipe is arranged in the double-function air cylinder, and a quick connector male head is arranged at the right end of the outer end pipe. The lower part of the left end of the dual-function main cylinder is sequentially connected with a nitrogen connecting pipe, an explosion-proof nitrogen valve and a nitrogen pipe, and the nitrogen pipe is provided with a main gas source pipe. The right side of the shell is provided with a self-closing type quick coupling female port which is sequentially connected with a gas connecting pipe, an explosion-proof gas valve and a gas pipe, and two locking cylinders are arranged at the same time. The middle lower part of the shell is provided with three time relays and two-position five-way electromagnetic valves. The male head of the self-closing type quick connector is combined with or separated from a matched female port by gas reversing of three time relays and two-position five-way electromagnetic valves, and the locking sleeve is driven to complete pulling, resetting and locking. And the functions of blowing the nitrogen gas from the gas connecting pipe to the gas pipe and stopping blowing are completed by matching with the opening and closing of the explosion-proof nitrogen gas valve and the explosion-proof gas valve.
Description
Technical Field
The invention relates to a matching device of a safety interlocking system of gas (and chemical natural gas and the like) equipment and a pipeline, which are produced and used by industrial enterprises. In particular to a gas combustion device suitable for steel (iron) ladles, tundishes, iron mixing furnaces, steel rolling heating furnaces and heat treatment furnaces of iron and steel enterprises, combustion devices for heating or heat preservation of natural gas of copper-clad ladles, aluminum ladles, heat preservation furnaces (or smelting furnaces) and the like of nonferrous metal enterprises, matching devices of safety control interlocking systems of various production devices and conveying pipelines, and the like.
Background
At present, the known various combustion devices, production devices and equipment pipelines of iron and steel and nonferrous metal (and chemical industry) enterprises are mostly provided with nitrogen (or steam) purging pipe heads which are manually connected, and the automatic interlocking function cannot be realized. And some enterprises adopt the electromagnetic valve as a blowing facility, although automatic interlocking can be realized, the requirements of the relevant clause standards of GB6222 coal gas safety regulations of industrial enterprises are seriously violated. Moreover, the pipelines (the diameter is larger than 159 mm) of the combustion devices of most enterprises are only provided with the quick cut-off valves without pressure-maintaining interlocking devices, and the requirements of the standards of the relevant provisions of GB6222 'gas safety regulations of industrial enterprises' are also violated.
Taking steel enterprises as examples: when various combustion devices are extinguished before or after ignition, explosive gas exists in a pipeline behind the valve or the combustion device due to internal leakage defects of gas valves and the presence of unprecedented gas. In the state where no automatic device handles explosive gases, there is necessarily an explosion risk at the time of re-ignition. The same various combustion devices do not have the quick cutting function of the pressure maintaining interlocking device on the pipeline with the diameter larger than 100mm, and the risk of backfire explosion exists. And after the nitrogen purging is finished, only the electromagnetic valve is used for closing without reliable partition measures, and the risk of accidents is caused because the leakage of the nitrogen can cause mutual channeling.
Disclosure of Invention
The invention provides a reliable disconnected type nitrogen rapid purging device of a multifunctional cylinder, aiming at solving the technical defect that the existing equipment and facilities for conveying and using gas (natural gas) lack a safety interlocking control matching device.
The technical scheme adopted by the invention for solving the technical problem comprises the following steps: the middle lower part of the shell is provided with a middle chamber, the upper part in the middle chamber is provided with a first time relay, a second time relay and a third time relay, and the lower part is provided with a first two-position five-way electromagnetic valve and a second two-position five-way electromagnetic valve;
the left side of the shell is provided with a multifunctional main cylinder, a cylinder pipe is arranged in the multifunctional main cylinder, the left side of the cylinder pipe is provided with a cylinder plug, and the right end of the cylinder pipe is provided with a quick connector male head;
a nitrogen connecting pipe is arranged below the left end of the multifunctional main cylinder, the lower end of the nitrogen connecting pipe is connected with an explosion-proof nitrogen valve, the lower end of the explosion-proof nitrogen valve is connected with a nitrogen pipe, and a valve gas source pipe is arranged on the nitrogen pipe;
the left side and the right side below the multifunctional master cylinder are respectively provided with a main push air inlet pipe and a main push air return pipe, and the other ends of the main push air inlet pipe and the main push air return pipe are respectively connected to a second air guide interface and a first air guide interface of a two-position five-way electromagnetic valve II;
the other end of the valve air source pipe is simultaneously connected with an air source interface II of the two-position five-way electromagnetic valve II and an air source interface I of the two-position five-way electromagnetic valve I.
A self-closing type quick connector female port is arranged on the right side of the shell, penetrates through the fixed plate and is connected with a gas connecting pipe, and is fixed on the fixed plate by a female port fixing bolt; an explosion-proof gas valve is connected below the gas connecting pipe, and a gas pipe is connected below the explosion-proof gas valve;
a first locking cylinder and a second locking cylinder are respectively arranged above and below the female port of the self-closing quick connector, and the first locking cylinder and the second locking cylinder are fixed on the fixing plate;
a locking sleeve is arranged on the left side of the female port of the self-closing type quick connector, an upper connecting plate and a lower connecting plate are welded above and below the locking sleeve, and the upper connecting plate and the lower connecting plate are respectively connected with a first air cylinder rod of a first locking air cylinder and a second air cylinder rod of a second locking air cylinder;
the left side and the right side of the locking cylinder I and the locking cylinder II are respectively provided with a locking propulsion pipe and a locking return pipe, and the other ends of the locking propulsion pipe and the locking return pipe are respectively connected to a gas guide interface IV and a gas guide interface III of the two-position five-way electromagnetic valve I;
through an electric appliance operation logic program set by the time relay I, the time relay II and the time relay III, the two-position five-way electromagnetic valve II is controlled to change the gas direction of the main push gas inlet pipe and the main push gas return pipe, so that the multifunctional main cylinder pushes the male end of the self-closing type quick connector out to be combined with the female port of the self-closing type quick connector or pushes the male end of the self-closing type quick connector back to be separated from the female port of the self-closing type quick connector; the locking push pipe and the locking push return pipe are driven to open and reset by reversing gas through the two-position five-way electromagnetic valve I, and the locking push pipe and the locking push return pipe are locked and opened before separation when the male connector of the self-closing type quick connector is combined with the female connector of the self-closing type quick connector; the explosion-proof nitrogen valve and the explosion-proof gas valve are opened simultaneously when the male joint of the self-closing type quick connector and the female joint of the self-closing type quick connector are combined and locked, and are closed simultaneously before separation; when the explosion-proof nitrogen valve and the explosion-proof gas valve are opened simultaneously, nitrogen is output to the gas connecting pipe and the gas pipe through the nitrogen communicating pipe, the cylinder pipe and the self-closing type quick connector male head; and at the same time, the nitrogen delivery was stopped.
Compared with the prior art, the invention is a device which can be controlled independently and can be matched with the prior art to realize automatic control, and has the main advantages that: the device has small volume, simple structure and powerful functions, and plays an important role in effectively restraining the explosion of combustible toxic gas and the poisoning asphyxia accident.
Description of the drawings:
the invention is described in detail below with reference to the following figures and examples:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the connection of a two-position five-way solenoid valve.
Detailed Description
As shown in fig. 1 and 2, in the figure: 1. the self-closing type quick connector comprises a shell, 2 parts of a multifunctional main cylinder, 3 parts of a cylinder plug, 4 parts of a cylinder pipe, 5 parts of a nitrogen connecting pipe, 6 parts of an anti-explosion nitrogen valve, 7 parts of a main push air inlet pipe, 8 parts of a nitrogen pipe, 9 parts of a valve air source pipe, 10 parts of a main push air return pipe, 11 parts of an intermediate chamber, 12 parts of a locking push pipe, 13 parts of a locking push return pipe, 14 parts of a two-position five-way electromagnetic valve I, 15 parts of a two-position five-way electromagnetic valve II, 16 parts of a time relay I, 17 parts of a gas pipe, 18 parts of a time relay II, 19 parts of an anti-explosion gas valve, 20 parts of a gas connecting pipe, 21 parts of a locking cylinder II, 22 parts of a female port fixing bolt, 23 parts of a fixing plate, 24 parts of a self-closing type quick connector female port, 25 parts of a locking cylinder I, 26 parts of a cylinder rod I, 27 parts of a locking sleeve, 28 parts of. 33. The first air source interface 34, the second air source interface 35, the first air guide interface 36, the second air guide interface 37, the third air guide interface 38 and the fourth air guide interface.
An embodiment of the invention, comprising: the device comprises a shell 1, wherein a middle chamber 11 is arranged at the middle lower part of the shell 1, a first time relay 16, a second time relay 18 and a third time relay 31 are arranged at the upper part in the middle chamber 11, and a first two-position five-way electromagnetic valve 14 and a second two-position five-way electromagnetic valve 15 are arranged at the lower part;
the left side of the shell 1 is provided with a multifunctional main cylinder 2, a cylinder pipe 4 is arranged in the multifunctional main cylinder 2, the left side of the cylinder pipe 4 is provided with a cylinder plug 3, and the right end of the cylinder pipe is provided with a quick connector male head 32;
a nitrogen connecting pipe 5 is arranged below the left end of the multifunctional main cylinder 2, the lower end of the nitrogen connecting pipe 5 is connected with an explosion-proof nitrogen valve 6, the lower end of the explosion-proof nitrogen valve 6 is connected with a nitrogen pipe 8, and a valve air source pipe 9 is arranged on the nitrogen pipe 8;
the left side and the right side below the multifunctional main cylinder 2 are respectively provided with a main push air inlet pipe 7 and a main push air return pipe 10, and the other ends of the main push air inlet pipe 7 and the main push air return pipe 10 are respectively connected to a second air guide interface 36 and a first air guide interface 35 of a two-position five-way electromagnetic valve 15;
the other end of the valve air source pipe 9 is simultaneously connected with an air source interface II 34 of the two-position five-way electromagnetic valve II 15 and an air source interface I33 of the two-position five-way electromagnetic valve I14.
A self-closing type quick connector female port 24 is arranged on the right side of the shell 1, the self-closing type quick connector female port 24 penetrates through a fixing plate 23 to be connected with a gas connecting pipe 20, and is fixed on the fixing plate 23 through a female port fixing bolt 22; an anti-explosion gas valve 19 is connected below the gas connecting pipe 20, and a gas pipe 17 is connected below the anti-explosion gas valve 19;
a first locking cylinder 25 and a second locking cylinder 21 are respectively arranged above and below the female port 24 of the self-closing quick connector, and the first locking cylinder 25 and the second locking cylinder 21 are both fixed on the fixing plate 23;
a locking sleeve 27 is arranged on the left side of the self-closing type quick connector female port 24, an upper connecting plate 28 and a lower connecting plate 30 are welded above and below the locking sleeve 27, and the upper connecting plate 28 and the lower connecting plate 30 are respectively connected with a cylinder rod I26 of a locking cylinder I25 and a cylinder rod II 29 of a locking cylinder II 21;
the left side and the right side of the locking cylinder I25 and the locking cylinder II 21 are respectively provided with a locking propulsion pipe 12 and a locking return pipe 13, and the other ends of the locking propulsion pipe 12 and the locking return pipe 13 are respectively connected to an air guide interface IV 38 and an air guide interface III 37 of the two-position five-way electromagnetic valve I14;
the working process of the invention is as follows:
through an electric appliance operation logic program set by a time relay I16, a time relay II 18 and a time relay III 31, a two-position electromagnetic valve II 15 is controlled to ensure that a main air pushing and feeding pipe 7 and a main air pushing and returning pipe 10 are subjected to air reversing to ensure that a multifunctional main cylinder 2 pushes a self-closing type quick coupling male head 32 out to be combined with a self-closing type quick coupling female port 24 or pushes the self-closing type quick coupling male head back to be separated from the self-closing type quick coupling female port 24; the locking pushing pipe 12 and the locking pushing return pipe 13 are driven to open and reset through gas reversing by the two-position five-way electromagnetic valve I14, and the locking sleeve 27 is locked and opened before being separated when the self-closing type quick connector male head 32 is combined with the self-closing type quick connector female port 24; the explosion-proof nitrogen valve 6 and the explosion-proof gas valve 19 are opened simultaneously when the male connector 32 of the self-closing type quick connector is combined and locked with the female connector 24 of the self-closing type quick connector, and are closed simultaneously before separation; when the explosion-proof nitrogen valve 6 and the explosion-proof gas valve 19 are opened simultaneously, nitrogen is output to the gas connecting pipe 20 and the gas pipe 17 through the nitrogen communicating pipe 5, the cylinder pipe 4 and the self-closing type quick connector male head 32; and at the same time, the nitrogen delivery was stopped.
Claims (2)
1. The utility model provides a reliable disconnected nitrogen gas of multi-functional cylinder sweeps device fast, it includes: the gas valve locking device comprises a shell (1), a multifunctional main cylinder (2), a cylinder plug (3), a cylinder pipe (4), a nitrogen communicating pipe (5), an anti-explosion nitrogen valve (6), a main pushing gas inlet pipe (7), a nitrogen pipe (8), a valve gas source pipe (9), a main pushing gas return pipe (10), a middle chamber (11), a locking pushing pipe (12), a locking pushing pipe (13), a two-position five-way electromagnetic valve I (14), a two-position five-way electromagnetic valve II (15), a time relay I (16), a gas pipe (17), a time relay II (18), an anti-explosion gas valve (19), a gas connecting pipe (20), a locking cylinder II (21), a female port fixing bolt (22), a fixing plate (23), a self-closing type quick connector female port (24) locking cylinder I (25), a cylinder rod I (26), a locking sleeve (27), an upper side connecting plate (28), a cylinder rod II (29), a lower side connecting plate, Time relay three (31), male head of self-closing type quick-operation joint (32), air supply interface one (33), air supply interface two (34), air guide interface one (35), air guide interface two (36) and air guide interface three (37) and air guide interface four (38), its characterized in that: the multifunctional main cylinder (2) is installed on the left side of the shell (1), a cylinder pipe (4) is arranged in the multifunctional main cylinder (2), a cylinder plug (3) is installed on the left side of the cylinder pipe (4), and a quick connector male head (32) is installed on the right end of the cylinder pipe; a nitrogen connecting pipe (5) is arranged below the left end of the multifunctional main cylinder (2), the lower end of the nitrogen connecting pipe (5) is connected with an explosion-proof nitrogen valve (6), the lower end of the explosion-proof nitrogen valve (6) is connected with a nitrogen pipe (8), and a valve air source pipe (9) is arranged on the nitrogen pipe (8);
the left side and the right side below the multifunctional master cylinder (2) are respectively provided with a main pushing air inlet pipe (7) and a main pushing air return pipe (10), and the other ends of the main pushing air inlet pipe (7) and the main pushing air return pipe (10) are respectively connected to a second air guide interface (36) and a first air guide interface (35) of a two-position five-way electromagnetic valve II (15);
the other end of the valve air source pipe (9) is simultaneously connected with an air source interface II (34) of the two-position five-way electromagnetic valve II (15) and an air source interface I (33) of the two-position five-way electromagnetic valve I (14).
2. The multifunctional cylinder reliable disconnection type nitrogen rapid purging device as claimed in claim 1, wherein: a self-closing type quick joint female port (24) is arranged on the right side of the shell (1), the self-closing type quick joint female port (24) penetrates through the fixing plate (23) to be connected with a gas connecting pipe (20) and is fixed on the fixing plate (23) through a female port fixing bolt (22); an anti-explosion gas valve (19) is connected below the gas connecting pipe (20), and a gas pipe (17) is connected below the anti-explosion gas valve (19);
a first locking cylinder (25) and a second locking cylinder (21) are respectively arranged above and below the female port (24) of the self-closing quick connector, and the first locking cylinder (25) and the second locking cylinder (21) are both fixed on the fixing plate (23);
a locking sleeve (27) is arranged on the left side of the self-closing type quick connector female port (24), an upper connecting plate (28) and a lower connecting plate (30) are welded above and below the locking sleeve (27), and the upper connecting plate (28) and the lower connecting plate (30) are respectively connected with a cylinder rod I (26) of a locking cylinder I (25) and a cylinder rod II (29) of a locking cylinder II (21);
the left side and the right side of the locking cylinder I (25) and the locking cylinder II (21) are respectively provided with a locking propulsion pipe (12) and a locking push-back pipe (13), and the other ends of the locking propulsion pipe (12) and the locking push-back pipe (13) are respectively connected to a gas guide interface IV (38) and a gas guide interface III (37) of the two-position five-way electromagnetic valve I (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011521823.0A CN112524492B (en) | 2020-12-22 | 2020-12-22 | Reliable disconnected nitrogen gas of multi-functional cylinder sweeps device fast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011521823.0A CN112524492B (en) | 2020-12-22 | 2020-12-22 | Reliable disconnected nitrogen gas of multi-functional cylinder sweeps device fast |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112524492A true CN112524492A (en) | 2021-03-19 |
| CN112524492B CN112524492B (en) | 2022-11-15 |
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ID=75002195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011521823.0A Expired - Fee Related CN112524492B (en) | 2020-12-22 | 2020-12-22 | Reliable disconnected nitrogen gas of multi-functional cylinder sweeps device fast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112524492B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1406879A (en) * | 1971-08-21 | 1975-09-17 | Veba Chemie Ag | Method of absorbing waste gases containing nitrogen oxides |
| CN101216148A (en) * | 2007-12-27 | 2008-07-09 | 夏俊双 | Coal gas explosion-proof rapid purging device |
| JP2010209987A (en) * | 2009-03-09 | 2010-09-24 | Taiyo Nippon Sanso Engineering Corp | Ejector device |
| CN202461061U (en) * | 2011-12-01 | 2012-10-03 | 夏俊双 | Pneumatic butt-joint type purging safety device |
| CN202927147U (en) * | 2012-11-28 | 2013-05-08 | 夏俊双 | Automatic locking-type purge device |
| CN105299659A (en) * | 2015-10-29 | 2016-02-03 | 山东钢铁股份有限公司 | Automatic coke oven emission ignition control system and control method |
| CN205065745U (en) * | 2015-10-29 | 2016-03-02 | 山东钢铁股份有限公司 | Automatic ignition control system of diffusing of coke oven |
| CN208779471U (en) * | 2018-09-11 | 2019-04-23 | 四川博能燃气股份有限公司 | A kind of gas piping blow device |
| CN211464281U (en) * | 2019-10-23 | 2020-09-11 | 广东海亮铜业有限公司 | Uninterrupted nitrogen purging system |
-
2020
- 2020-12-22 CN CN202011521823.0A patent/CN112524492B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1406879A (en) * | 1971-08-21 | 1975-09-17 | Veba Chemie Ag | Method of absorbing waste gases containing nitrogen oxides |
| CN101216148A (en) * | 2007-12-27 | 2008-07-09 | 夏俊双 | Coal gas explosion-proof rapid purging device |
| JP2010209987A (en) * | 2009-03-09 | 2010-09-24 | Taiyo Nippon Sanso Engineering Corp | Ejector device |
| CN202461061U (en) * | 2011-12-01 | 2012-10-03 | 夏俊双 | Pneumatic butt-joint type purging safety device |
| CN202927147U (en) * | 2012-11-28 | 2013-05-08 | 夏俊双 | Automatic locking-type purge device |
| CN105299659A (en) * | 2015-10-29 | 2016-02-03 | 山东钢铁股份有限公司 | Automatic coke oven emission ignition control system and control method |
| CN205065745U (en) * | 2015-10-29 | 2016-03-02 | 山东钢铁股份有限公司 | Automatic ignition control system of diffusing of coke oven |
| CN208779471U (en) * | 2018-09-11 | 2019-04-23 | 四川博能燃气股份有限公司 | A kind of gas piping blow device |
| CN211464281U (en) * | 2019-10-23 | 2020-09-11 | 广东海亮铜业有限公司 | Uninterrupted nitrogen purging system |
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| Publication number | Publication date |
|---|---|
| CN112524492B (en) | 2022-11-15 |
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Granted publication date: 20221115 |