CN113970069A - Cold rolling workshop nitrogen gas temporary feeding device - Google Patents
Cold rolling workshop nitrogen gas temporary feeding device Download PDFInfo
- Publication number
- CN113970069A CN113970069A CN202111219107.1A CN202111219107A CN113970069A CN 113970069 A CN113970069 A CN 113970069A CN 202111219107 A CN202111219107 A CN 202111219107A CN 113970069 A CN113970069 A CN 113970069A
- Authority
- CN
- China
- Prior art keywords
- nitrogen
- cold rolling
- valve
- temporary
- supply device
- 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.)
- Pending
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 256
- 238000005097 cold rolling Methods 0.000 title claims abstract description 46
- 229910001873 dinitrogen Inorganic materials 0.000 title claims description 30
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 113
- 230000001105 regulatory effect Effects 0.000 claims abstract description 36
- 238000012806 monitoring device Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 239000007789 gas Substances 0.000 abstract description 9
- 238000004880 explosion Methods 0.000 abstract description 4
- 238000005246 galvanizing Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 11
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 8
- 239000001257 hydrogen Substances 0.000 description 8
- 229910052739 hydrogen Inorganic materials 0.000 description 8
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 108010001267 Protein Subunits Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 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
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a temporary nitrogen supply device for a cold rolling workshop, which comprises: the nitrogen pipe network transmits nitrogen to the cold rolling workshop through a main pipeline; a first nitrogen pressure regulating valve is arranged on the main pipeline; the main pipeline is connected with a nitrogen spherical tank which is communicated with the main pipeline through a branch pipeline. A valve is arranged on a branch pipeline connected with the nitrogen spherical tank. The application provides a temporary nitrogen supply device provides safety guarantee for cold rolling workshop galvanizing unit and bell-type furnace production, reduces the risk that the gas supply that leads to because of pipe network or governing valve trouble is interrupted and is leaded to the explosion accident.
Description
Technical Field
The application belongs to the technical field of steel production equipment, and particularly relates to a temporary nitrogen supply device for a cold rolling workshop.
Background
The cold rolling workshop uses high-purity hydrogen as protective gas during hot galvanizing and bell-type annealing furnace production, when production maintenance or accident stop, the hydrogen in the furnace needs to be blown out of the workshop in time by nitrogen, otherwise, the accident of hydrogen explosion can occur, therefore, the continuous supply of the nitrogen supplied to the cold rolling workshop must be ensured, and the interruption cannot be realized. When the cold rolling workshop is in normal production, use the nitrogen gas pipe network to supply with nitrogen gas, can guarantee to have stable nitrogen gas to supply with in the cold rolling workshop, but in case the nitrogen gas pipe network goes wrong, can't guarantee sufficient nitrogen gas supply, and meet the cold rolling workshop and take place the production accident, will not have nitrogen gas to be used for replacing hydrogen this moment, and there is very big potential safety hazard in the scene. There is therefore a need for a reliable emergency nitrogen supply method that can provide the necessary nitrogen usage to the cold rolling mill even when the nitrogen line supply is interrupted.
Disclosure of Invention
The application provides a cold rolling workshop nitrogen gas temporary feeding device to at least, solve when the nitrogen gas pipe network breaks down, how to continue to provide sufficient nitrogen gas's problem for the cold rolling workshop.
According to the content of the application, the temporary nitrogen supply device for the cold rolling workshop is provided, and comprises:
the nitrogen pipe network transmits nitrogen to the cold rolling workshop through a main pipeline;
a first nitrogen pressure regulating valve is arranged on the main pipeline;
the main pipeline is connected with a nitrogen spherical tank which is communicated with the main pipeline through a branch pipeline.
In one embodiment, a valve is arranged on the branch pipeline connected with the nitrogen spherical tank.
In one embodiment, a second branch pipeline is connected between the valve and the nitrogen spherical tank, one end of the second branch pipeline is communicated with the branch pipeline, and the other end of the second branch pipeline is communicated with the main pipeline; and a second nitrogen pressure regulating valve is arranged on the second branch pipeline.
In one embodiment, the valve disposed on the bypass conduit is a check valve.
In one embodiment, a safety valve is provided between the main pipe and the cold rolling mill.
In one embodiment, a manual stop valve is respectively arranged at the front and the rear of the first nitrogen pressure regulating valve along the main pipeline direction.
In one embodiment, a manual stop valve is respectively arranged at the front and the rear of the second nitrogen pressure regulating valve along the direction of the second branch pipeline.
In one embodiment, under the condition that the nitrogen pipe network normally supplies nitrogen, the manual stop valve on the main pipe and the first nitrogen pressure regulating valve are in a normally open state.
In one embodiment, under the condition that the nitrogen pipe network normally supplies nitrogen, the manual stop valve on the second branch pipeline is in a normally open state, and the second nitrogen pressure regulating valve is in a normally closed state.
In one embodiment, a pressure monitoring device is arranged on the main pipeline, and when the pressure in the main pipeline is lower than a preset value, the pressure monitoring device closes the first nitrogen pressure regulating valve and opens the second nitrogen pressure regulating valve.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a structural diagram of a temporary nitrogen gas supply apparatus according to a first embodiment of the present disclosure.
Fig. 2 is a structural view of a nitrogen gas temporary supply apparatus in a second embodiment provided in the present application.
Fig. 3 is a structural view of a nitrogen gas temporary supply apparatus in a third embodiment provided in the present application.
Fig. 4 is a structural view of a nitrogen gas temporary supply apparatus in a fourth embodiment provided in the present application.
Fig. 5 is a structural view of a nitrogen gas temporary supply device with a sensing device in a fifth embodiment provided in the present application.
Detailed Description
The technical solutions 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.
The cold rolling workshop uses high-purity hydrogen as protective gas during hot galvanizing and bell-type annealing furnace production, when production maintenance or accident stop, the hydrogen in the furnace needs to be blown out of the workshop in time by nitrogen, otherwise, the accident of hydrogen explosion can occur, therefore, the continuous supply of the nitrogen supplied to the cold rolling workshop must be ensured, and the interruption cannot be realized. When the cold rolling workshop is in normal production, use the nitrogen gas pipe network to supply with nitrogen gas, can guarantee to have stable nitrogen gas to supply with in the cold rolling workshop, but in case the nitrogen gas pipe network goes wrong, can't guarantee sufficient nitrogen gas supply, and meet the cold rolling workshop and take place the production accident, will not have nitrogen gas to be used for replacing hydrogen this moment, and there is very big potential safety hazard in the scene.
In order to solve the above problem and ensure that the cold rolling workshop can have normal nitrogen supply when the nitrogen pipe network goes wrong, the application provides a temporary nitrogen supply device for the cold rolling workshop, as shown in fig. 1, comprising:
the nitrogen pipe network transmits nitrogen to the cold rolling workshop through a main pipeline 7;
a first nitrogen pressure regulating valve 5 is arranged on the main pipeline 7;
the main pipeline 7 is connected with a nitrogen spherical tank 1, and the nitrogen spherical tank 1 is communicated with the main pipeline 7 through a branch pipeline 8.
The nitrogen gas pipe network passes through trunk line 7 and carries nitrogen gas to cold rolling workshop, when continuously carrying nitrogen gas, partial nitrogen gas is stored in getting into nitrogen gas spherical tank 1 through the branch road pipeline 8 that links to each other with trunk line 7, when the unable air feed of nitrogen gas pipe network break down, by the emergence of the sufficient accident of avoiding of nitrogen gas spherical tank 1 to cold rolling workshop air feed in order to guarantee the workshop.
In one embodiment, a valve is provided in the branch line 8 connected to the nitrogen balloon 1.
In a specific embodiment, when the nitrogen spherical tank 1 is filled with nitrogen, the valve is closed, the nitrogen pipe network supplies air to the cold rolling workshop, and when the nitrogen pipe network cannot supply air, the valve is opened, and the nitrogen spherical tank 1 supplies air to the cold rolling workshop.
In one embodiment, as shown in fig. 2, a second branch pipeline 9 is further connected between the valve and the nitrogen spherical tank, one end of the second branch pipeline is communicated with the branch pipeline 8, and the other end is communicated with the main pipeline 7; a second nitrogen pressure regulating valve 4 is arranged on the second branch pipeline 9.
In a specific embodiment, when the nitrogen pipe network supplies gas normally and the nitrogen in the nitrogen spherical tank 1 is sufficient, the second nitrogen pressure regulating valve 4 and the valves on the branch pipelines 8 are closed, when the nitrogen pipe network supplies gas abnormally, the valves on the branch pipelines 8 are closed, the second nitrogen pressure regulating valve 4 is opened, and the gas is conveyed to the cold rolling workshop from the nitrogen spherical tank 1 through the second branch pipelines 9.
In one embodiment, the valve disposed on the bypass conduit is a check valve.
In a specific embodiment, the valve arranged on the branch pipeline can be a check valve 2, gas can only enter the nitrogen spherical tank 1 in one direction by adopting the check valve, when the nitrogen pipeline network can not provide gas, the nitrogen pressure regulating valve 4 is opened, and nitrogen in the nitrogen spherical tank 1 flows into the second branch pipeline 9 through the branch pipeline 8 and then enters the cold rolling workshop along the main pipeline 7.
In one embodiment, a safety valve is provided between the main pipe and the cold rolling mill.
In a specific embodiment, as shown in fig. 3, a safety valve 6 is arranged on the main pipe, which automatically opens to release pressure when the pressure in the pipe network is too high and automatically closes when the pressure drops to a suitable value.
In one embodiment, a manual stop valve is respectively arranged at the front and the rear of the first nitrogen pressure regulating valve along the main pipeline direction.
In one embodiment, a manual stop valve is respectively arranged at the front and the rear of the second nitrogen pressure regulating valve along the direction of the second branch pipeline.
In one embodiment, under the condition that the nitrogen pipe network normally supplies nitrogen, the manual stop valve on the main pipe and the first nitrogen pressure regulating valve are in a normally open state.
In one embodiment, under the condition that the nitrogen pipe network normally supplies nitrogen, the manual stop valve on the second branch pipeline is in a normally open state, and the second nitrogen pressure regulating valve is in a normally closed state.
In one embodiment, a pressure monitoring device is arranged on the main pipeline, and when the pressure in the main pipeline is lower than a preset value, the pressure monitoring device closes the first nitrogen pressure regulating valve and opens the second nitrogen pressure regulating valve.
In an embodiment, as shown in fig. 4, the manual cut-off valves 3 are provided before and after the first nitrogen pressure regulating valve 5 and the second nitrogen pressure regulating valve 4, and the manual cut-off valves 3 are normally opened. Normally, the first nitrogen pressure regulating valve 5 is opened, the second nitrogen pressure regulating valve 4 is closed, and nitrogen sent by a nitrogen pipe network is used in a cold rolling workshop. When the following two situations occur:
(1) the first nitrogen pressure regulating valve 5 fails and cannot regulate pressure;
(2) the nitrogen pipe network is cut off, and the pressure of the pipe network is rapidly reduced;
and after receiving the detection signals of the two conditions, the control system automatically opens the second nitrogen pressure regulating valve 4 and closes the first nitrogen pressure regulating valve 5. Meanwhile, the check valve 2 is arranged, so that the nitrogen spherical tank 1 can only admit air under normal working conditions, and does not participate in external air supply when the nitrogen pipe network can just produce air supply, so that air source storage is ensured.
In an embodiment, a sensing system is further disposed on the temporary nitrogen supply device provided in the present application, as shown in fig. 5, a pressure sensor is disposed on the branch pipeline between the manual stop valve and the nitrogen pressure regulating valve and between the manual stop valve and the safety valve, and is used for sensing the pressure in the branch pipeline in real time and uploading the pressure to the processor, so that the processor controls the regulating valve in response to the pressure in the pipeline.
The application provides a temporary nitrogen supply device provides safety guarantee for cold rolling workshop galvanizing unit and bell-type furnace production, reduces the risk that the gas supply that leads to because of pipe network or governing valve trouble is interrupted and is leaded to the explosion accident.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the hardware + program class embodiment, since it is substantially similar to the method embodiment, the description is simple, and the relevant points can be referred to the partial description of the method embodiment. Although embodiments of the present description provide method steps as described in embodiments or flowcharts, more or fewer steps may be included based on conventional or non-inventive means. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. When an actual apparatus or end product executes, it may execute sequentially or in parallel (e.g., parallel processors or multi-threaded environments, or even distributed data processing environments) according to the method shown in the embodiment or the figures. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the presence of additional identical or equivalent elements in a process, method, article, or apparatus that comprises the recited elements is not excluded. For convenience of description, the above devices are described as being divided into various modules by functions, and are described separately. Of course, in implementing the embodiments of the present description, the functions of each module may be implemented in one or more software and/or hardware, or a module implementing the same function may be implemented by a combination of multiple sub-modules or sub-units, and the like. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the specification. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. The above description is only an example of the embodiments of the present disclosure, and is not intended to limit the embodiments of the present disclosure. Various modifications and variations to the embodiments described herein will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present specification should be included in the scope of the claims of the embodiments of the present specification.
Claims (10)
1. A cold rolling workshop nitrogen gas temporary feeding device is characterized by comprising:
the nitrogen pipe network transmits nitrogen to the cold rolling workshop through a main pipe;
a first nitrogen pressure regulating valve is arranged on the main pipeline;
the main pipeline is connected with a nitrogen spherical tank, and the nitrogen spherical tank is communicated with the main pipeline through a branch pipeline.
2. The temporary nitrogen supply device for a cold rolling plant according to claim 1, wherein a valve is provided on the branch pipe connected to the nitrogen spherical tank.
3. The temporary nitrogen supply device for the cold rolling workshop as claimed in claim 2, wherein a second branch pipeline is connected between the valve and the nitrogen spherical tank, one end of the second branch pipeline is communicated with the branch pipeline, and the other end of the second branch pipeline is communicated with the main pipeline; and a second nitrogen pressure regulating valve is arranged on the second branch pipeline.
4. Cold rolling shop nitrogen temporary supply device according to claim 3, characterized in that the valve provided on the by-pass conduit is a check valve.
5. A cold rolling shop nitrogen temporary supply device according to claim 4, characterized in that a safety valve is provided between said main pipe and said cold rolling shop.
6. The cold rolling shop nitrogen temporary supply device according to any one of claims 1 to 5, wherein a manual shutoff valve is provided in front and rear of the first nitrogen pressure regulating valve in a main pipe direction, respectively.
7. The temporary nitrogen supply device for the cold rolling plant according to claim 3, wherein a manual stop valve is provided at each of the second nitrogen pressure adjusting valve in the front and rear direction of the second branch pipe.
8. The temporary nitrogen supply device for the cold rolling workshop according to claim 6, wherein the manual stop valve and the first nitrogen pressure regulating valve on the main pipeline are in a normally open state under the condition that the nitrogen pipe network normally supplies nitrogen.
9. The temporary nitrogen supply device for the cold rolling plant according to claim 7, wherein in a case where the nitrogen pipe network normally supplies nitrogen, the manual cut-off valve on the second branch pipe is in a normally open state, and the second nitrogen pressure regulating valve is in a normally closed state.
10. The temporary nitrogen supply device for a cold rolling plant according to claim 9, wherein a pressure monitoring device is provided on the main pipe, and when the pressure in the main pipe is lower than a preset value, the pressure monitoring device closes the first nitrogen pressure regulating valve and opens the second nitrogen pressure regulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111219107.1A CN113970069A (en) | 2021-10-20 | 2021-10-20 | Cold rolling workshop nitrogen gas temporary feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111219107.1A CN113970069A (en) | 2021-10-20 | 2021-10-20 | Cold rolling workshop nitrogen gas temporary feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113970069A true CN113970069A (en) | 2022-01-25 |
Family
ID=79587760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111219107.1A Pending CN113970069A (en) | 2021-10-20 | 2021-10-20 | Cold rolling workshop nitrogen gas temporary feeding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113970069A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH285786A (en) * | 1950-06-16 | 1952-09-30 | Liban Tadeusz | Process for hot-dip galvanizing of iron or steel sheets. |
| US5872805A (en) * | 1996-08-14 | 1999-02-16 | Inductotherm Corp. | Pot for coating continuous metallic strip |
| CN205938521U (en) * | 2016-08-09 | 2017-02-08 | 中石化宁波工程有限公司 | Supply nitrogen system in succession |
| CN110848571A (en) * | 2019-11-15 | 2020-02-28 | 胡双大 | Automatic control system for generator mixer |
| CN111621769A (en) * | 2019-02-28 | 2020-09-04 | 长鑫存储技术有限公司 | Exhaust duct of semiconductor manufacturing apparatus |
-
2021
- 2021-10-20 CN CN202111219107.1A patent/CN113970069A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH285786A (en) * | 1950-06-16 | 1952-09-30 | Liban Tadeusz | Process for hot-dip galvanizing of iron or steel sheets. |
| US5872805A (en) * | 1996-08-14 | 1999-02-16 | Inductotherm Corp. | Pot for coating continuous metallic strip |
| CN205938521U (en) * | 2016-08-09 | 2017-02-08 | 中石化宁波工程有限公司 | Supply nitrogen system in succession |
| CN111621769A (en) * | 2019-02-28 | 2020-09-04 | 长鑫存储技术有限公司 | Exhaust duct of semiconductor manufacturing apparatus |
| CN110848571A (en) * | 2019-11-15 | 2020-02-28 | 胡双大 | Automatic control system for generator mixer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110296320B (en) | Nitrogen gas supply system | |
| DE202013012531U1 (en) | Compressed gas containers | |
| EP2020560A1 (en) | Electronic flow sensor | |
| CN201046970Y (en) | Tuyere slag-filling preventing automatic control device for blast furnaces | |
| CN109306385A (en) | A kind of blast furnace top pressure stabilizing control system and its control method | |
| CN113970069A (en) | Cold rolling workshop nitrogen gas temporary feeding device | |
| CN115064817A (en) | Method, device and system for preventing thermal runaway | |
| CN207865034U (en) | A kind of gas pressure regulating system | |
| CN207112356U (en) | LNG feeders and LNG air supply systems | |
| CN208331787U (en) | Continuous gas supply superpressure pressure protective device | |
| CN109812707B (en) | Method, device and system for reducing pressure of entering station of oilfield gathering and transportation station | |
| CN201944547U (en) | System for compressed natural gas supply station | |
| CN109282145B (en) | Online hot standby pressure regulating method for gas transmission pipeline | |
| CN114877253A (en) | Operation safety control method for intelligent verification process of natural gas flowmeter | |
| CN210852943U (en) | Oxygen leakage monitoring system for A320 unit | |
| CN109340575B (en) | Online pressure regulating device and online pressure regulating method for gas transmission pipeline | |
| CN109611396B (en) | Automatic oil supply switching hydraulic system and method for large-ladle sliding gate hydraulic cylinder | |
| CN202794985U (en) | Automatic control system of production line of layered crystalline sodium disilicate | |
| CN105466489B (en) | Pressure regulator valve safety detecting system | |
| CN216715858U (en) | Automatic change low temperature liquid chemical and fill dress system | |
| CN102155620A (en) | System of compressed natural gas supply station and pressure regulation and gas supply method of system | |
| CN102976346A (en) | Automatic control system for layered crystal sodium disilicate production line | |
| CN115076604A (en) | Gas pipeline protection device | |
| CN109357164B (en) | Main pipeline pipe burst monitoring alarm and interlocking device for gas pipeline branch transmission station | |
| CN208983018U (en) | Turbine by-pass condensed water pressure recycle system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |