CN202486630U - Device for automatically detecting and controlling liquid level in steam processor liquid box - Google Patents
Device for automatically detecting and controlling liquid level in steam processor liquid box Download PDFInfo
- Publication number
- CN202486630U CN202486630U CN2011204483493U CN201120448349U CN202486630U CN 202486630 U CN202486630 U CN 202486630U CN 2011204483493 U CN2011204483493 U CN 2011204483493U CN 201120448349 U CN201120448349 U CN 201120448349U CN 202486630 U CN202486630 U CN 202486630U
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- liquid level
- power supply
- control
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Abstract
The utility model relates to a device for automatically detecting and controlling the liquid level in a steam processor liquid box. The device includes a liquid level switch which is arranged in the steam processor liquid box, and the liquid level switch is connected with a detection power supply and a primary side of an optoelectronic coupler in an optoelectronic isolation circuit in series. An output signal of the optoelectronic isolation circuit is connected with a system control circuit. The optoelectronic isolation circuit and the system control circuit are connected with a working power supply respectively. The working power supply gives the control power to the system control circuit. The working power supply gives the detection power to the flow switch via the optoelectronic isolation circuit. The device not only can automatically control the liquid level of the liquid box, but also can improve the anti-electromagnetic interference performance, so the reliability of a steam processor automatic control system is further improved.
Description
Technical field
The utility model belongs to the automatic control technology field, is specifically related to a kind of vapor processor liquid case liquid level automatic detection and control device.
Technical background
Modern equipment manufacture is had higher requirement to security, reliability, the antijamming capability of vapor processor.And existing vapor processor control system anti-electromagnetic interference capability is weak and lack the liquid case Level Detection control device that liquid case liquid level is detected control, can not satisfy the user control system anti-electromagnetic interference capability and liquid case liquid level are carried out the requirement of Automatic Detection and Control.
Summary of the invention
The technical matters that the utility model solves is: design a kind of vapor processor liquid case liquid level automatic detection and control device; Not only can control liquid case liquid level automatically; And anti-electromagnetic interference capability is greatly improved, and then the vapor processor reliability of automatic control system is further enhanced.
The technical solution of the utility model is: a kind of vapor processor liquid case liquid level automatic detection and control device; Comprise level switch; Said level switch is arranged in the vapor processor liquid case; And level switch and the former limit of detecting on power supply, the photoelectric isolating circuit of photoelectrical coupler are connected in series the output signal connected system control circuit of photoelectric isolating circuit.
Said photoelectric isolating circuit, system, control circuit are connected with working power respectively; Said working power is that system, control circuit provides the control power supply, and said working power is that level switch provides the detection power supply through photoelectric isolating circuit.
The utility model compared with prior art adopts photoelectrical coupler that light-current system and heavy-current control system are isolated; Two systems are promptly kept in touch and isolate on electric; Cut off the electromagnetic interference (EMI) transmission channel; Not only realized liquid case automatic control of liquid, and anti-electromagnetic interference capability is greatly improved, and then the vapor processor reliability of automatic control system is further enhanced.
Description of drawings
Fig. 1 is the utility model schematic block circuit diagram,
Fig. 2 is the utility model system, control circuit theory diagram.
Embodiment
Be described further below in conjunction with 1,2 pairs of the utility model of accompanying drawing.
A kind of vapor processor liquid case liquid level automatic detection and control device; Comprise level switch 2; Said level switch 2 is arranged in the vapor processor liquid case 1; And level switch 2 is connected in series the output signal connected system control circuit 4 of photoelectric isolating circuit 3 with the former limit of detecting on power supply, the photoelectric isolating circuit 3 of photoelectrical coupler.Said photoelectric isolating circuit 3, system, control circuit 4 are connected with working power 5 respectively; Said working power 5 provides the control power supply for system, control circuit 4, and said working power 5 provides the detection power supply through photoelectric isolating circuit 3 for level switch 2.Said system, control circuit 4 comprises: A/D change-over circuit, watchdog circuit, button and display circuit, single chip circuit, I/O input and debouncing circuit and I/O output circuit.
Principle of work: when liquid case 1 liquid level exceeds the upper limit or in limited time following; Thereby the photoelectrical coupler lumination of light emitting diode on the level switch 2 control photoelectric isolating circuits 3 outputs signal to system, control circuit 4; 4 pairs of acquired signal of system, control circuit are handled the back and are shown fault type code and output alarm signal; And through control system liquid pump equipment operation, and then the liquid level of control liquid case 1, realize closed loop prison to liquid case 1 liquid level.
Claims (2)
1. vapor processor liquid case liquid level automatic detection and control device; Comprise level switch (2); It is characterized in that: said level switch (2) is arranged in the vapor processor liquid case (1); And level switch (2) is connected in series the output signal connected system control circuit (4) of photoelectric isolating circuit (3) with the former limit of photoelectrical coupler of detecting power supply, photoelectric isolating circuit (3).
2. vapor processor liquid case liquid level automatic detection and control device according to claim 1, it is characterized in that: said photoelectric isolating circuit (3), system, control circuit (4) are connected with working power (5) respectively; Said working power (5) provides the control power supply for system, control circuit (4), and said working power (5) provides the detection power supply through photoelectric isolating circuit (3) for level switch (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204483493U CN202486630U (en) | 2011-11-15 | 2011-11-15 | Device for automatically detecting and controlling liquid level in steam processor liquid box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204483493U CN202486630U (en) | 2011-11-15 | 2011-11-15 | Device for automatically detecting and controlling liquid level in steam processor liquid box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202486630U true CN202486630U (en) | 2012-10-10 |
Family
ID=46961039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204483493U Expired - Fee Related CN202486630U (en) | 2011-11-15 | 2011-11-15 | Device for automatically detecting and controlling liquid level in steam processor liquid box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202486630U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108052130A (en) * | 2017-12-12 | 2018-05-18 | 长沙科悦企业管理咨询有限公司 | A kind of quantitative water compensating automatic controller |
-
2011
- 2011-11-15 CN CN2011204483493U patent/CN202486630U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108052130A (en) * | 2017-12-12 | 2018-05-18 | 长沙科悦企业管理咨询有限公司 | A kind of quantitative water compensating automatic controller |
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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: 20121010 Termination date: 20151115 |
|
| EXPY | Termination of patent right or utility model |