CN112377396A - Emergent electric device of spectrum appearance vacuum system gas leakage - Google Patents
Emergent electric device of spectrum appearance vacuum system gas leakage Download PDFInfo
- Publication number
- CN112377396A CN112377396A CN202011124858.0A CN202011124858A CN112377396A CN 112377396 A CN112377396 A CN 112377396A CN 202011124858 A CN202011124858 A CN 202011124858A CN 112377396 A CN112377396 A CN 112377396A
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- China
- Prior art keywords
- vacuum
- gas leakage
- electric device
- spectrometer
- vacuum pump
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- 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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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
- F04B39/066—Cooling by ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The invention relates to an emergency electric device for solving the problem of gas leakage of a spectrometer vacuum system. The emergent electric device for the gas leakage of the spectrometer vacuum system thoroughly solves the gas leakage phenomenon caused by the fault of the vacuum pump, the system is reliable in operation, the vacuum value is stable, the reduction rate of the vacuum value is lower than that of the prior art, the analysis data is stable and reliable, and the use requirement of stokehole test analysis is ensured.
Description
Technical Field
The invention relates to a spectrometer, in particular to an emergency electric device for solving the problem of gas leakage of a vacuum system of the spectrometer.
Background
The QSN750-II type spectrometer is produced by German OBLF company, is used for the analysis of the test in front of the steel-making furnace, mainly comprises five major elements of C, S, Si, Mn and P, the vacuum pump of the spectrometer is started frequently and is started once every few minutes, the analysis of the spectrometer is seriously influenced, the temperature of a vacuum chamber above the pump is high due to the fact that the starting times of the vacuum pump are multiple, the motor of the vacuum pump generates heat, the performance of an optical device in the vacuum chamber is changed, the optical characteristics are unstable, an optical path deviates, the analysis data are unstable, the sampling analysis in front of the steel-making furnace and the steel-making production are seriously influenced, the vacuum pump can only be imported from abroad and needs to be specially customized, the supply period is at least 18 weeks, the period is long, and therefore. There is an urgent need for a technique for solving the problem of gas leakage of a spectrometer vacuum system.
Disclosure of Invention
In order to solve the problems, the invention provides the following technical scheme that the emergency electric device for solving the air leakage problem of the vacuum system of the spectrometer is characterized by comprising a vacuum valve, a contactor, a time relay and a spectrum fan. The vacuum valve is a high-performance electromagnetic valve. The spectrum fan and the contactor coil are connected in parallel. The relay is set to 5 seconds.
In order to prevent the backflow and ensure the stability and reliability of the vacuum system, according to the configuration standard of the vacuum system of the QSN750 model instrument, a vacuum valve should be added, and a program should be set in a main controller, but since the instrument is imported from Germany, the encryption of an internal chip cannot be implemented, and the most effective and rapid method is to realize the function by adding an external circuit.
The working principle is as follows: the operating principle of the vacuum system of the QSN750 model instrument is that when the vacuum value is lower than 0.5 of the current vacuum value, the vacuum pump is started, after the vacuum pump works for 5 seconds, the pipeline between the vacuum pump and the vacuum valve is firstly vacuumized, the vacuum valve is powered on and opened, at the moment, the whole vacuum system is started to be vacuumized, the vacuum value rises, after the vacuum pump works for 300 seconds, the vacuum valve stops, the vacuum pump still works, after the vacuum valve stops for 5 seconds, the vacuum pump stops, and the work is finished.
After the design of the system is finished, power-on debugging is carried out, after a spectrometer ST2 is disconnected, a contactor KM1 loses power and is not released, a vacuum pump still works, after analysis, after KM1 loses power instantaneously, according to the law of electromagnetic induction, a coil generates counter electromotive force at the moment of losing power, so that the coil is continuously electrified and cannot be released, in order to solve the problem, the current of the coil is released, the current of the coil is consumed at the moment of losing power of the coil, the current can be consumed by connecting loads at two ends of the coil in parallel, through research, an instrument fan and the coil in parallel can be connected, the power supply problem of the fan is solved, the power can be saved, the load is not required to be added independently, the fan works when the vacuum pump is started and is stopped when the vacuum pump is closed, the heating problem when the vacuum pump is started is solved, and the main reason of pumping and temperature rise of the instrument is the heat generated when the vacuum pump, therefore, the heat source is solved from the aspect of control, and the fan does not need to work all the time, so that electricity is saved, the use requirement is met, and the service life of the fan is prolonged. The voltage of the coil of the contactor is released by the parallel fan, the system works normally, in addition, the time interval between the vacuum pump and the vacuum valve of the same type of spectrometer is measured and calculated to be about 5 seconds, and therefore, the time relay of the system is set to be 5 seconds.
The emergent electric device for the gas leakage of the spectrometer vacuum system thoroughly solves the gas leakage phenomenon caused by the fault of the vacuum pump, the system is reliable in operation, the vacuum value is stable, the reduction rate of the vacuum value is lower than that of the prior art, the analysis data is stable and reliable, and the use requirement of stokehole test analysis is ensured.
Drawings
FIG. 1 is a circuit diagram of spectrometer vacuum pump and vacuum valve control.
FIG. 2 is a diagram of a spectrometer vacuum system.
FIG. 3 is a logic timing diagram of a spectrometer vacuum system.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
An external circuit power supply is independently introduced, a spectrometer controller controls a main contactor KM1, when the vacuum value is required to be reduced to be lower than 0.5 of the current vacuum value, a spectrometer ST2 is closed, a contactor KM1 is powered on, a KM1 normally open point is closed, a vacuum pump is started, a time relay KT1 is powered on, a time delay is closed, a contactor KM3 is powered on, a vacuum valve is powered on and opened, vacuumizing is started, after the pump runs for 300s, a spectrometer ST2 is disconnected, a contactor KM1 is powered off, a time relay 1 is powered off, a contactor KT 3 is powered off, a vacuum valve is powered off and closed, after KM1 is powered off, a vacuum pump KM1 normally open contact is disconnected, but the vacuum pump still works due to the fact that KM2 is closed, the normally closed point of KM1 is recovered, the KT2 is powered on, the time delay is closed, a coil KM 2.
The data pairs before and after the implementation of the invention are as follows:
comparison of before and after vacuum value and efficiency of the invention (beginning to implement in 3 days of 12 months)
The invention implements the comparison of the before and after normalization coefficients
After the vacuum pump is implemented, the vacuum value efficiency is reduced to be within a normal range of 5%, the normal range of the vacuum value cannot be lower than 0.7, the vacuum pump is always in a normal state after the vacuum pump is implemented and is stable, the working interval time of the vacuum pump is longer than that of the prior vacuum pump, the vacuum state is better and more stable than that of the prior vacuum pump, and the main elements C, SI, MN and P are improved.
The invention combines the electric system and the spectrometer, has high implementation speed and high efficiency, does not need to spend a lot of time to replace a pump from abroad, ensures the use of the instrument from time, strives for precious time for steelmaking production, and avoids loss.
The above description is only for the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the protection scope and the disclosure of the present invention.
Claims (4)
1. The utility model provides a spectrum appearance vacuum system leaks gas emergency electric device which characterized in that, emergency electric device includes vacuum valve, contactor, time relay, spectrum fan.
2. An emergency electrical device according to claim 1, wherein the vacuum valve is a high performance solenoid valve.
3. An emergency electrical device according to claim 1, wherein the spectral fan and the contactor coil are connected in parallel.
4. An emergency electrical device according to claim 1, wherein the time relay is set to 5 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011124858.0A CN112377396A (en) | 2020-10-20 | 2020-10-20 | Emergent electric device of spectrum appearance vacuum system gas leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011124858.0A CN112377396A (en) | 2020-10-20 | 2020-10-20 | Emergent electric device of spectrum appearance vacuum system gas leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112377396A true CN112377396A (en) | 2021-02-19 |
Family
ID=74580231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011124858.0A Pending CN112377396A (en) | 2020-10-20 | 2020-10-20 | Emergent electric device of spectrum appearance vacuum system gas leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112377396A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202560528U (en) * | 2012-04-25 | 2012-11-28 | 北大方正集团有限公司 | Control mechanism of vacuum pump in automatic optical detector, and automatic optical detector |
-
2020
- 2020-10-20 CN CN202011124858.0A patent/CN112377396A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202560528U (en) * | 2012-04-25 | 2012-11-28 | 北大方正集团有限公司 | Control mechanism of vacuum pump in automatic optical detector, and automatic optical detector |
Non-Patent Citations (1)
| Title |
|---|
| 师宇: "电气系统在QSN750光谱仪真空系统中的设计与应用", 《分析仪器》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210219 |
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| RJ01 | Rejection of invention patent application after publication |