CN2913677Y - Instrument safety means for oxygen compressor - Google Patents
Instrument safety means for oxygen compressor Download PDFInfo
- Publication number
- CN2913677Y CN2913677Y CN 200520014351 CN200520014351U CN2913677Y CN 2913677 Y CN2913677 Y CN 2913677Y CN 200520014351 CN200520014351 CN 200520014351 CN 200520014351 U CN200520014351 U CN 200520014351U CN 2913677 Y CN2913677 Y CN 2913677Y
- Authority
- CN
- China
- Prior art keywords
- oxygen
- pressure
- instrument control
- digital display
- oxygen compressor
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The utility model relates to a control safety device for oxygen compressors, which comprises a motor-controlled oxygen compressor and a control cabinet. A copper pipt, for transferring pressure, is arranged inside the oxygen compressor and connected with a pressure sensor external to the control cabinet. The pressure sensor outputs 4-20 mA standard signals and is connected with a digital pressure meter inside the control cabinet. The output of the digital pressure meter is further connected with a warning system. The utility model has the advantages that the high-pressure oxygen is indirectly introduced to the control cabinet, that is, the high-pressure oxygen is delivered by the copper pipe to the pressure sensor and the oxygen pressure is converted to standard signals which are further sent to the control cabinet, so that the problem of direct contact between the leaked high-pressure oxygen and electric spark inside the control cabinet is avoided and the safety is greatly improved.
Description
Technical field
The utility model relates to a kind of instrument control device, particularly relates to a kind of instrument control safety installations that is applied to oxygen compressor.
Background technique
At present, the instrument control safety installations that is matched in oxygen compressor is to make instrument control and automatically controlled two casings, mechanical type pressure relay and mechanical contacts formula pressure gauge and relevant appliance component are arranged in instrument control case, and the oxygen copper pipe of the conducting pressure that the process oxygen compressor pressurizeed directly inserts on instrument control case interior the mechanical compression relay and connecting-point type pressure gauge.Electric components in the instrument control case such as the electronic circuit of thermometer part adhesive, open or the process of impulse electricity in spark phenomenon is often arranged, can often send trickle spark, and enter what flow in the oxygen copper pipe in the instrument control case is high pressure oxygen, as because of with mechanical compression relay or pressure gauge bad connection or there is an oxygen leakage, all major accident may take place.In electric control box, also there is potential safety hazard, as be motor operation in electric control box with thermorelay control oxygen compressor, mainly be to prevent over current of motor, but as over current of motor really occurring, will cause the thermorelay overcurrent overheat, burn out thermorelay, as by chance running into oxygen leakage, that consequence will be hardly imaginable.
Summary of the invention
Technical problem to be solved in the utility model provides the instrument control safety installations of a kind of safe facility, easy-operating oxygen compressor.
In order to address the above problem, the technological scheme that the utility model adopted provides a kind of instrument control safety installations of oxygen compressor, oxygen compressor and instrument control case by Electric Machine Control are formed, the copper pipe of conducting pressure inserts and is located at the outer pressure transducer of instrument control case in the oxygen compressor, the standard signal that pressure transducer produces 4-20mA inserts on the digital display manometer that is located in the instrument control case, and digital display manometer output terminal and alarm system are joined.
Above-mentioned motor adopts the three phase current power supply, one be provided with a current transformer mutually therein, the current transformer output terminal is connected with electric parameters transducer, and the electric parameters transducer output terminal is connected with the digital display ammeter, and the output terminal of digital display ammeter links to each other with motor with alarm system.
The beneficial effects of the utility model are that the oxygen copper pipe of high pressure does not directly enter in the instrument control case, but be introduced into pressure transducer outside instrument control case, by pressure transducer pressure being changed into the 4-20mA standard signal enters in the instrument control case, cut off the high pressure oxygen that leaks and directly enter instrument control case and the chance that electric spark in the instrument control contacts, improve Security greatly.Simultaneously, with instrument control and an automatically controlled instrument control case, minimizing cost and the occupation space merged into.
Description of drawings
Fig. 1: embodiment's of the present utility model structural representation.
Embodiment
Below, with accompanying drawing the utility model is described in more detail in conjunction with the embodiments.
After oxygen compressor carries out multistage compression to oxygen, be filled in the steel cylinder, have the oxygen copper pipe of conducting pressure to enter pressure transducer simultaneously, the standard signal that is produced 4-20mA by pressure transducer enters in the instrument control case, so that the oxygen pressure in the oxygen compressor is monitored.See Fig. 1, a kind of instrument control safety installations of oxygen compressor, oxygen compressor 2 and instrument control case 6 by motor 1 control are formed, and the copper pipe 3 of conducting pressure enters pressure transducer 4 in the oxygen compressor 2, and the standard signal 5 that produces 4-20mA by pressure transducer 4 enters in the instrument control case 6 again.Pressure transducer 4 can be put away from instrument control case 6, can eliminate present instrument automatically controlled in spark that produces and the chance that the high pressure oxygen that leaks generation contacts, avoid the generation of potential safety hazard.On the digital display manometer 7 that the standard signal 5 of pressure transducer 4 generation 4-20mA inserts in the instrument control cases 6, by digital display manometer 7 force value is accurately shown, avoid mechanical contacts formula pressure gauge bigger reading error and machine error like this, by digital display manometer 7, can compare with the value of 7 li settings of digital display manometer, digital display manometer 7 output terminals and alarm system are joined, greater than the value of setting, relatively back digital display manometer 7 will be assigned instruction and send acoustooptic alarm as the value of 7 li demonstrations of digital display pressure gauge.In the motor part, the power supply of employing three phase current, one be provided with a current transformer 8 mutually therein, by electric parameters transducer 9 the 0-5A transformer current is converted into corresponding 4-20mA standard signal, the 4-20mA standard signal that comes out in the electric parameters transducer 9 is transferred in the digital display ammeter 10, compare with the value of 10 li settings of digital display ammeter, the output terminal of digital display ammeter 10 links to each other with control motor 1 with alarm system.As the value of 10 li demonstrations of digital display ammeter greater than the value of setting, digital display ammeter 10 just sends an alarm command, and also explanation has the technical requirements of a phase current overshoot in three phase current simultaneously, produce over-current phenomenon avoidance in the circuit, digital display ammeter 10 is also just assigned instruction and is sent acoustooptic alarm.
Claims (2)
1, a kind of instrument control safety installations of oxygen compressor, oxygen compressor and instrument control case by Electric Machine Control are formed, it is characterized in that: the copper pipe of conducting pressure inserts and is located at the outer pressure transducer of instrument control case in the oxygen compressor, the standard signal that pressure transducer produces 4-20mA inserts on the digital display manometer that is located in the instrument control case, and digital display manometer output terminal and alarm system are joined.
2, the instrument control safety installations of oxygen compressor according to claim 1, it is characterized in that: described motor adopts the three phase current power supply, one be provided with a current transformer mutually therein, the current transformer output terminal connects electric parameters transducer, the electric parameters transducer output terminal connects the digital display ammeter, and the output terminal of digital display ammeter links to each other with motor with alarm system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520014351 CN2913677Y (en) | 2005-08-25 | 2005-08-25 | Instrument safety means for oxygen compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520014351 CN2913677Y (en) | 2005-08-25 | 2005-08-25 | Instrument safety means for oxygen compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2913677Y true CN2913677Y (en) | 2007-06-20 |
Family
ID=38168276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520014351 Expired - Fee Related CN2913677Y (en) | 2005-08-25 | 2005-08-25 | Instrument safety means for oxygen compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2913677Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001629A (en) * | 2010-10-28 | 2011-04-06 | 合肥同智机电控制技术股份有限公司 | Vehicle-mounted oxygen supply apparatus |
| CN105526132A (en) * | 2016-02-01 | 2016-04-27 | 飞龙精工科技(苏州)有限公司 | Air compressor with alarming device |
-
2005
- 2005-08-25 CN CN 200520014351 patent/CN2913677Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001629A (en) * | 2010-10-28 | 2011-04-06 | 合肥同智机电控制技术股份有限公司 | Vehicle-mounted oxygen supply apparatus |
| CN102001629B (en) * | 2010-10-28 | 2012-08-08 | 合肥同智机电控制技术股份有限公司 | Vehicle-mounted oxygen supply apparatus |
| CN105526132A (en) * | 2016-02-01 | 2016-04-27 | 飞龙精工科技(苏州)有限公司 | Air compressor with alarming device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2007232721A (en) | Non-intrinsic safety explosion proof supply measuring device | |
| CN101858958A (en) | Intelligent device and method for monitoring vacuum circuit breaker on line | |
| CN2913677Y (en) | Instrument safety means for oxygen compressor | |
| CN101789593A (en) | Surge protective device with detection function | |
| CN201117559Y (en) | SF6 gas density relay | |
| CN210605415U (en) | GIS equipment vacuum pumping control device based on automatic feedback | |
| CN204165676U (en) | A kind of insulation lightning protection transmitter | |
| CN216622531U (en) | Insulating tool for 27.5kV GIS terminal testing | |
| CN202586280U (en) | An intelligent high-voltage parallel capacitor and a high-voltage automatic reactive compensator | |
| CN102554184A (en) | Method for controlling quality of castings obtained through low pressure casting and dynamic pressure detecting device thereof | |
| CN105257409A (en) | Engine monitoring instrument for electric control ship | |
| CN202888712U (en) | Intelligent load switch cabinet | |
| CN101694738A (en) | Method and system for electric fire alarm | |
| CN104319194A (en) | Electric meter leakage protector | |
| CN204230049U (en) | With the intelligent switch capacitor of mechanical explosion mechanism | |
| CN210835168U (en) | Hydrogen fuel cell detection test platform | |
| CN201772982U (en) | High-pressure dry type oil-SF6 sleeve monitoring system | |
| CN201682178U (en) | High-voltage distribution equipment provided with infrared temperature measurement window | |
| CN111336943A (en) | Detection system for meshing depth of moving and static contacts of handcart circuit breaker of centrally installed switchgear | |
| CN204758184U (en) | High tension switchgear plum blossom contact plug power detection device | |
| CN201508278U (en) | Gas density monitor | |
| CN203191139U (en) | Detector for hydraulic clamp for electric conducting wire | |
| CN216489065U (en) | Pressure detection and automatic control system of positive-pressure power distribution cabinet | |
| CN215986280U (en) | Circuit overload experimental device and system | |
| CN215183714U (en) | Sulfur hexafluoride gas micro-water density switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070620 Termination date: 20100825 |