CN203276076U - Automatic high-pressure oxygen control system of oxygen generating equipment - Google Patents
Automatic high-pressure oxygen control system of oxygen generating equipment Download PDFInfo
- Publication number
- CN203276076U CN203276076U CN 201320369365 CN201320369365U CN203276076U CN 203276076 U CN203276076 U CN 203276076U CN 201320369365 CN201320369365 CN 201320369365 CN 201320369365 U CN201320369365 U CN 201320369365U CN 203276076 U CN203276076 U CN 203276076U
- Authority
- CN
- China
- Prior art keywords
- converter
- liquid level
- oxygen
- motor
- driver
- 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
- Separation By Low-Temperature Treatments (AREA)
Abstract
The utility model discloses an automatic high-pressure oxygen control system of oxygen generating equipment. The automatic high-pressure oxygen control system comprises a liquid level indicator limit switch, an A/D (analog/digital) converter, a temperature sensor, a PLC (programmable logic controller), a frequency converter, a driver, a variable frequency motor, a stepping motor, a pneumatic butterfly valve and a liquid oxygen pump, wherein the temperature sensor is arranged on a pipeline of a high-pressure oxygen outlet heat exchanger and is connected with the A/D converter; the liquid level indicator limit switch is arranged on a liquid level indicator and is connected with the PLC; the A/D converter, the frequency converter and the driver are connected with the PLC; the variable frequency motor is connected with the liquid oxygen pump and the frequency converter; the stepping motor is connected with the driver and the pneumatic butterfly valve. The automatic high-pressure oxygen control system has the positive effects that the turns number of the variable frequency motor is adjusted automatically according to the state of the liquid level indicator limit switch, the state of the stepping motor is adjusted automatically according to the temperature sensed by the temperature sensor, and the opening degree of the pneumatic butterfly valve is adjusted by virtue of the state of the stepping motor, so that the liquid level and the temperature are controlled stably, the labor is saved and the working intensity is lowered; besides, the frequency converter can be also used for realizing motor soft-start and power factor compensation and has the functions such as over-current protection provided to the equipment.
Description
Technical field
The utility model relates to a kind of oxygen generating plant hyperbaric oxygen automatic control system, the oxygen generating plant hyperbaric oxygen automatic control system of temperature when particularly a kind of automatic adjusting liquid reservoir liquid level and automatic control high pressure oxygen go out heat interchanger.
Background technology
Small-sized oxygen generating plant adopts interior compression process to produce high pressure gas oxygen, be that air first passes through the liquid oxygen pump supercharging by the liquid oxygen that obtains after separating, become the high pressure liquid oxygen, then the high pressure liquid oxygen passes through heat interchanger, carry out exchange heat with the drag flow air in heat interchanger, be filled with gas cylinder after becoming high pressure gas oxygen after cooling drag flow air, high pressure liquid oxygen heat absorption.In adopting, the oxygen generating plant of compression process has advantages of that wasted work is few, has avoided the secondary pollution of gas oxygen, more than temperature should be controlled at zero degrees celsius when high pressure gas oxygen goes out heat interchanger, otherwise might cause gas bottle explosion, should control according to the height of liquid reservoir liquid level the rotating speed of liquid oxygen pump motor simultaneously.
At present, small-sized oxygen generating plant generally adopts manual mode to control the rotating speed of liquid oxygen pump motor, control the drag flow air capacity of carrying out heat interchange with high pressure gas oxygen by the aperture size of manual adjustments drag flow air door simultaneously, thereby make hyperbaric oxygen go out the temperature of heat interchanger more than zero degrees celsius.There is very large trouble in such way: the staff is must 24 hours ceaselessly on duty, and working strength is very large.
The utility model content
The purpose of this utility model is to overcome the prior art deficiency, and a kind of oxygen generating plant hyperbaric oxygen automatic control system that can effectively reduce working strength is provided.
in order to address the above problem, the utility model is by the following technical solutions: oxygen generating plant hyperbaric oxygen automatic control system, comprise the liquid level meter limit switch, A/D converter, temperature sensor, the PLC controller, frequency converter, driver, variable-frequency motor, stepper motor, Pneumatic butterfly valve, liquid oxygen pump, described temperature sensor is arranged on the pipeline that high pressure gas oxygen goes out heat interchanger and is connected with A/D converter, described liquid level meter limit switch is arranged on liquid level meter and with the PLC controller and is connected, described A/D converter, frequency converter, driver is connected with the PLC controller, described variable-frequency motor is connected with liquid oxygen pump and frequency converter, described stepper motor is connected with driver and Pneumatic butterfly valve.
Described liquid level meter limit switch is in order to detect the liquid reservoir liquid level and the liquid level status information is sent to the PLC controller, described PLC controller sends the variable-frequency motor steering order according to the status information of liquid level meter limit switch to frequency converter, described frequency converter carries out the frequency control operation according to steering order to variable-frequency motor, and described variable-frequency motor drives liquid oxygen pump work.
described temperature sensor is used for detecting the temperature that high pressure gas oxygen goes out heat interchanger, and send temperature information to A/D converter, the simulating signal that described A/D converter transmits sensor is converted into digital signal and sends to the PLC controller, described PLC controller compares computing with A/D converter input signal and setting value, and send instruction to driver, described driver is the four-way driver supporting with stepper motor, can drive the Driving Stepping Motor motion according to instruction, described stepper motor promotes Pneumatic butterfly valve, described Pneumatic butterfly valve aperture size is adjusted the flow of drag flow air, and then control high pressure gas oxygen goes out the temperature of heat interchanger.
Good effect of the present utility model is: the utility model is regulated the revolution of variable-frequency motor automatically according to the state of liquid level meter limit switch; the temperature level that records according to temperature sensor is regulated the state of stepper motor automatically; the aperture of utilizing the state of stepper motor to regulate Pneumatic butterfly valve; realize the stable control of liquid level and temperature; saved manpower; reduced working strength, frequency converter also can be realized soft starter for motor, compensation power factor in addition, and the defencive functions such as overcurrent can also be provided to equipment.
Description of drawings
Fig. 1 is system construction drawing of the present utility model.
Embodiment
Below in conjunction with the drawings and the specific embodiments, enforcement of the present utility model is described further:
as shown in Figure 1, a kind of oxygen generating plant hyperbaric oxygen automatic control system of the present utility model, comprise the liquid level gauge limit switch, A/D converter, temperature sensor, the PLC controller, frequency converter, driver, variable-frequency motor, stepper motor, Pneumatic butterfly valve, liquid oxygen pump, it is characterized in that, described temperature sensor is arranged on the pipeline that high pressure gas oxygen goes out heat interchanger and is connected with A/D converter, described liquid level gauge limit switch is arranged on liquid level gauge and with the PLC controller and is connected, described A/D converter, frequency converter, driver is connected with the PLC controller, described variable-frequency motor is connected with liquid oxygen pump and frequency converter, described stepper motor is connected with driver and Pneumatic butterfly valve, wherein, be arranged on limit switch on liquid level meter in order to detect the liquid reservoir liquid level and the liquid level status information is sent to the PLC controller, described PLC controller sends the variable-frequency motor steering order according to the status information of liquid level gauge limit switch to frequency converter, described frequency converter carries out the frequency control operation according to steering order to variable-frequency motor, and described variable-frequency motor drives liquid oxygen pump work,
described temperature sensor is used for detecting the temperature that high pressure gas oxygen goes out heat interchanger, and send temperature information to A/D converter, the simulating signal that described A/D converter transmits sensor is converted into digital signal and sends to the PLC controller, described PLC controller compares computing with input signal and setting signal, and send instruction to driver, described driver is the four-way driver supporting with stepper motor, can drive the Driving Stepping Motor motion according to instruction, described stepper motor promotes Pneumatic butterfly valve, described Pneumatic butterfly valve aperture size is adjusted the flow of drag flow air, and then control high pressure gas oxygen goes out the temperature of heat interchanger.
The utility model principle of work: switch on power, start the PLC controller, at first carry out system initialization, then start the PLC control program, the PLC controller carries out Real-Time Monitoring to the temperature that liquid level and the hyperbaric oxygen of liquid reservoir goes out heat interchanger, PLC is by the state of monitoring liquid level meter limit switch, control the frequency output of frequency converter, frequency converter is used for controlling the travelling speed of liquid oxygen pump motor for liquid pump motor provides different running frequencies, control the uninterrupted of liquid oxygen pump, reach the purpose of controlling the liquid reservoir liquid level; The PLC controller will compare from numerical value and the setting value that A/D converter transmits, computing, send instruction to driver, displacement by the driver control stepper motor, stepper motor is regulated the aperture of Pneumatic butterfly valve, control the drag flow air capacity of heat interchanger, reach and control the purpose that hyperbaric oxygen goes out heat exchange temperature.
Claims (1)
1. oxygen generating plant hyperbaric oxygen automatic control system, comprise the liquid level meter limit switch, A/D converter, temperature sensor, the PLC controller, frequency converter, driver, variable-frequency motor, stepper motor, Pneumatic butterfly valve, liquid oxygen pump, it is characterized in that: described temperature sensor is arranged on the pipeline that high pressure gas oxygen goes out heat interchanger and is connected with A/D converter, described liquid level meter limit switch is arranged on liquid level meter and with the PLC controller and is connected, described A/D converter, frequency converter, driver is connected with the PLC controller, described variable-frequency motor is connected with liquid oxygen pump and frequency converter, described stepper motor is connected with driver and Pneumatic butterfly valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320369365 CN203276076U (en) | 2013-06-17 | 2013-06-17 | Automatic high-pressure oxygen control system of oxygen generating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320369365 CN203276076U (en) | 2013-06-17 | 2013-06-17 | Automatic high-pressure oxygen control system of oxygen generating equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203276076U true CN203276076U (en) | 2013-11-06 |
Family
ID=49506447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320369365 Expired - Fee Related CN203276076U (en) | 2013-06-17 | 2013-06-17 | Automatic high-pressure oxygen control system of oxygen generating equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203276076U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107065760A (en) * | 2017-06-05 | 2017-08-18 | 峨眉山市驰骋机械制造有限公司 | Power station pressure regulation valve control system |
-
2013
- 2013-06-17 CN CN 201320369365 patent/CN203276076U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107065760A (en) * | 2017-06-05 | 2017-08-18 | 峨眉山市驰骋机械制造有限公司 | Power station pressure regulation valve control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100578106C (en) | Quality and regulation control method and system for chill station of central air conditioner | |
| CN203130465U (en) | Monitoring system for frequency-converting control of air compressor | |
| CN201059715Y (en) | Central air-conditioning freezing stations quality regulating control system | |
| CN202215933U (en) | Low-temperature liquid filling system | |
| CN203276076U (en) | Automatic high-pressure oxygen control system of oxygen generating equipment | |
| CN201783673U (en) | Self-adjusting constant-pressure cooling system for deep-hole drilling | |
| CN102748957A (en) | Yellow phosphorus electric stove tail gas recovery system | |
| CN102235361A (en) | Method and device for constant pressure control of screw air compressor | |
| CN204476699U (en) | A kind of piston compressor frequency conversion cooling system based on PID | |
| CN201984334U (en) | Industrial circulating water energy saving control system | |
| CN110645188A (en) | Variable frequency motor driven liquid supply sledge equipment | |
| CN206739528U (en) | A kind of central air conditioner cold source system automatic control system | |
| CN2771712Y (en) | Energy-saving control system for central air conditioner | |
| CN202789875U (en) | Control system for hydraulic universal testing machine | |
| CN107642485B (en) | Frequency conversion type oil-immersed pump Efficiency test method | |
| CN202109616U (en) | Energy-saving control device for ground source heat pump central air-conditioning system | |
| CN202694079U (en) | Fuzzy control system of natural gas compressor adjusting valve | |
| CN211503824U (en) | Water turbine operation condition adjusting device for driving cooling tower fan | |
| CN204493245U (en) | Central cooler fan frequency conversion speed control system | |
| CN203453027U (en) | Safe intelligent control system for air compressors | |
| CN202809694U (en) | Integrated frequency-conversion speed-regulation constant-pressure water supply control device | |
| CN202579137U (en) | Energy-saving intelligent control device for air compressor | |
| CN203744469U (en) | Fan coil management system based on direct digital control (DDC) controller | |
| CN202860996U (en) | Rolling oil control system | |
| CN201925139U (en) | Automatic control device of air compressor for mines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20140617 |
|
| EXPY | Termination of patent right or utility model |