CN2133762Y - Small boiler safety automatic control interlock appliance - Google Patents
Small boiler safety automatic control interlock appliance Download PDFInfo
- Publication number
- CN2133762Y CN2133762Y CN 92236110 CN92236110U CN2133762Y CN 2133762 Y CN2133762 Y CN 2133762Y CN 92236110 CN92236110 CN 92236110 CN 92236110 U CN92236110 U CN 92236110U CN 2133762 Y CN2133762 Y CN 2133762Y
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- CN
- China
- Prior art keywords
- control circuit
- automatic control
- boiler
- lower limit
- interlock
- 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
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model discloses a small boiler safety automatic control interlock device which is composed of a pressure fetching device, a pressure transmitting pipe, a differential pressure transmitter, an indicating and automatic controller, an automatic control circuit, etc., wherein, the automatic control circuit is composed of an upper bound control circuit, a lower bound control circuit, a super lower bound control circuit, a water pump control circuit, a blower control circuit and a draught fan control circuit, etc. which are connected in parallel. The small boiler safety automatic control interlock device can respectively stop supplying water, can fill water, can interlock electric appliances, can stop all the electric appliances from running and can warn during the upper bound, the lower bound and the super lower bound of the liquid level of a boiler. The utility model ensures the boiler to safely operate, and has the advantages of simple structure, low cost, high precision, reliable motion, etc. The small boiler safety automatic control interlock device is suitable for being used by small boilers.
Description
The utility model relates to a kind of boiler safety Self-control interlock device.
Existing a kind of boiler safety self-con-tained unit, stepless automatic control system of being made up of pressure obtaning device, connecting pipe, valve, differential pressure transmitter, DDZ or electronic computer etc. constitutes, utilize the SEA LEVEL VARIATION in the boiler to realize control automatically, thereby guarantee safe operation of the boiler.This device is fit closely for the security control of large-sized boiler, because the time constant of large-sized boiler is very little, at any time all to there be a large amount of water to replenish, what have also needs leading adjusting, as long as water level has a declining tendency and will regulate, increase output, just can meet the demands, all the time all regulate, water level is fluctuateed in very little scope all the time according to steam production output and water level.This plant automation degree height, result of use is good, but cost reaches tens0000 or twenties0000 yuan, and the maintenance load of instrument or electronic computer is big, and operation and maintenance personnel's technical quality also requires very high.For miniature boiler, adopting said apparatus is very incompatible.
The purpose of this utility model provides a kind of simple in structure, cheap, the safety auto-controlled interlock that is complementary with miniature boiler.
The utility model is achieved by the following scheme: its circuit of automatic control part is composed in parallel by upper limit control circuit, lower limit control circuit, water pump control circuit, air-introduced machine control circuit, control circuit of blower, super lower limit control circuit, muffling circuit etc., its upper limit control circuit by relay J 1 and indicator lamp HD1 parallel connection after tandem tap K1 constitute, the lower limit control circuit by relay J 2 and indicator lamp LD parallel connection after, tandem tap K2 constitutes, super lower limit control circuit by relay J 3, J6, buzzer DD, indicator lamp UD parallel connection after, tandem tap K3 constitutes.
The utility model can be realized the electrical equipment interlocking as water pump, air-introduced machine, air blast etc. according to boiler water level to the many places auxiliary equipment, water level is carried out automatically regulated.Go up in limited time, automatically cut off the water, down in limited time, automatic loading water, super following prescribing a time limit stops water pump, air-introduced machine, air blast operation, treat that operating personnel cry (promptly seeing with the draining valve draining whether it dryouies) behind the water, manual starting water pump and blower fan recover automatic control state, and every equipment all has indicator lamp indication operating mode.High water level and low water level all have light indication and audible alarm, and manually noise reduction, and after waiting to recover normal condition, the indication of reporting to the police is eliminated automatically.Superly in limited time be accident condition down, manually noise reduction of operator, treat that the person in charge shows up after, manually noise reduction.Air-introduced machine, air blast reciprocal interlocking guarantee that burner hearth is in negative pressure.And water level regulated to realize manually, to automatically switch.This device is reliable, and easy to maintenance do not have schooling requirement and special technical requirement to operating personnel, and the general electrician of attendant at once.General 3000～4000 yuan of this apparatus cost is below 4% of prior art cost.
Further narrate below in conjunction with drawings and Examples.
Fig. 1 is a kind of automatic control circuit figure that the utility model is implemented.
The utility model is by pressure obtaning device, connecting pipe, valve, differential pressure transmitter, indication and automatic controller, compositions such as automatic control circuit, its automatic control circuit is by upper limit control circuit, the lower limit control circuit, water pump control circuit, the air-introduced machine control circuit, control circuit of blower, muffling circuits etc. compose in parallel (referring to Fig. 1), its upper limit control circuit by relay J 1 and indicator lamp HD1 parallel connection after tandem tap K1 constitute, the lower limit control circuit by relay J 2 and indicator lamp LD parallel connection after, tandem tap K2 constitutes, super lower limit control circuit is by relay J 3, J6(is the time relay), buzzer DD, after the indicator lamp UD parallel connection, tandem tap K3 constitutes.For the utility model can manually be controlled, K switch 1, K2, K3 be test button SAN1 in parallel, SAN2, SAN3 respectively, can realize the utility model put into operation before the manual simulated test of various functions.K switch 1 series connection change-over switch K4 switches to realize the automatic or manual that water level is regulated.
K1 in the automatic control circuit, K2, K3 are arranged in indication and the automatic controller.Indication and automatic controller receive the dc current signal of 0～10mADC of differential pressure transmitter, the actuating signal of the index signal that becomes 0～100% scale and three different switches, indication has three positioners with automatic controller, when meter pointer overlaps with upper limit positioning pointer, upper limit K switch 1 closure, when overlapping with the lower limit positioning pointer, limit switch K2 closure, when overlapping with super lower limit positioning pointer, super limit switch K3 closure, they represent the upper limit of steam water-level respectively, lower limit, the operating mode of super lower limit, automatic control circuit are according to three switch (K1, K2, K3) act on and realize controlling automatically and interlocking.
Claims (3)
1, the safety auto-controlled interlock of a kind of miniature boiler, by pressure obtaning device, connecting pipe, valve, differential pressure transmitter, automatic control partly waits composition, it is characterized in that: described its circuit of automatic control part is by upper limit control circuit, the lower limit control circuit, water pump control circuit, the air-introduced machine control circuit, control circuit of blower, super lower limit control circuit, muffling circuits etc. compose in parallel, its upper limit control circuit by relay J 1 and indicator lamp HD1 parallel connection after, tandem tap K1 constitutes, the lower limit control circuit by relay J 2 and indicator lamp LD parallel connection after, tandem tap K2 constitutes, super lower limit control circuit is by relay J 3, J6, buzzer DD, after the indicator lamp UD parallel connection, tandem tap K3 constitutes.
2, boiler safety Self-control interlock device according to claim 1 is characterized in that: K switch 1, K2, K3 be test switch SAN1 in parallel, SAN2, SAN3 respectively.
3, according to claim 1,2 described boiler safety Self-control interlock devices, it is characterized in that: K switch 1 series connection change-over switch K4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92236110 CN2133762Y (en) | 1992-10-01 | 1992-10-01 | Small boiler safety automatic control interlock appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92236110 CN2133762Y (en) | 1992-10-01 | 1992-10-01 | Small boiler safety automatic control interlock appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2133762Y true CN2133762Y (en) | 1993-05-19 |
Family
ID=33777745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92236110 Expired - Fee Related CN2133762Y (en) | 1992-10-01 | 1992-10-01 | Small boiler safety automatic control interlock appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2133762Y (en) |
-
1992
- 1992-10-01 CN CN 92236110 patent/CN2133762Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |