CN2056529U - Over pressure warner for steam boiler - Google Patents
Over pressure warner for steam boiler Download PDFInfo
- Publication number
- CN2056529U CN2056529U CN 89209375 CN89209375U CN2056529U CN 2056529 U CN2056529 U CN 2056529U CN 89209375 CN89209375 CN 89209375 CN 89209375 U CN89209375 U CN 89209375U CN 2056529 U CN2056529 U CN 2056529U
- Authority
- CN
- China
- Prior art keywords
- loop
- relay
- pilot lamp
- pressure
- steam boiler
- 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.)
- Withdrawn
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model relates to a safety device for a steam boiler. The overpressure warning interlocking protector of an existing boiler has the problems that the maintenance and the failure recovery for the boiler are inconvenient, etc. The pressure responsive element of the utility model respectively connects a non-electrical signal with an indicator light electric circuit, an audible alarm circuit and a pressure relief circuit through a relay. When the pressure of the boiler is equal to or more than the rated value, the control function is automatically completed. The safety device for a steam boiler of the utility model has the advantages of completely reliable working performance, high sensitivity, low cost, etc.
Description
The utility model relates to a kind of steam boiler safety guard,
Existing boiler superpressure warning interlock protection device; warning and interlocking effect when the pressure that can realize plain cylindrical furnace reaches the setting pressure value; this alarm exists warning and moves simultaneously with interlocking device; only when shutting down, get rid of boiler failure and regulate boiler pressure; make troubles for maintenance and user of service, be specifically designed to the also not discovery of control device that the steam boiler superpressure is reported to the police.
The purpose of this utility model provides a kind of alarm control unit that can realize warning, interlocking, automatic control function when steam boiler pressure surpasses rated pressure.
The utility model is by control box, electro connecting pressure gauge, the electromagnetism thrust unit is formed, control box panel top is provided with alarm lamp 1, the middle part is provided with relay indicating light 2, inspection machine pilot lamp 3, pressure release interlocking pilot lamp 4, the bottom is provided with turns round sub-switch 5, automatically (manually) gauge tap, inspection machine loop relay 6 normally opened contacts insert pilot lamp and alarm sound loop respectively, the relay 7 in superpressure loop links to each other with a winding point of electro connecting pressure gauge, normally opened contact inserts pilot lamp and alarm sound loop respectively, the relay 8 in interlocked control loop links to each other with another winding point of electro connecting pressure gauge, normally opened contact inserts pilot lamp, the A.C. contactor of alarm sound loop and interlocked control circuit, the electromagnet pusher on one group of normally opened contact access security valve in pressure release loop.
Characteristics such as it is safe and reliable to the utlity model has serviceability, highly sensitive, and cost is low.
Accompanying drawing 1 is the utility model control box structural representation,
Accompanying drawing 2 is the utility model electrical schematic,
Below in conjunction with accompanying drawing the utility model is further described.The present steam boiler that generally uses; be in operation when the pressure overrate; safety valve has played the safeguard protection effect; but in practice; quite a few safety valve is often arranged owing to do not use for a long time; irregularly test again; when pressure reaches the operating pressure value; safety valve is failure to actuate; safe operation to steam boiler exists potential threat; the utility model is in the loop of superpressure alarm controller; increase the pressure release control device; played dual fail-safe effect to safety valve; automatic control and manual mode operation relief valve device are installed on alarm controller; manual control can be pressed the boiler administrative provisions at any time; carry out the safety valve routine test; need not arrive upper boiler and manually move test with hand; the utility model continues when rising to dangerous pressure if vapor pressure is continuous, by the pressure release self-con-tained unit in the alarm controller after warning of steam boiler superpressure and the indication of superpressure signal; open safety valve by force and carry out the pressure release discharging; make vapor pressure decline in the boiler, interlock protection action simultaneously, machine automatically turns off the blast; induced draft fan (or fuel supply); when vapor pressure drops to rated pressure, stop the pressure release discharging automatically.
The utility model principle of work is such, measuring vapor pressure is to be welded on the joint of pressure medium by the airtight bourdon tube of an end, under the effect of vapor pressure, bourdon tube is deformed, the terminal generation is shifted, with connecting rod driven gear mechanism, make the rotation of pressure pointer, indication relevant pressure value on index dial.And by dynamic and static contact pressure change signal is exported, the vapor pressure numerical value measured by electro connecting pressure gauge is transported in the control box, realizes alarm sound and signal indication, pressure release action and interlock protection through miniature relay.
The utility model at first is transformed into electric signal by electro connecting pressure gauge with pressure signal; and by superpressure report to the police, the indication of superpressure signal and relay circuits such as interlock protection action and automatic control pressure release finish above-mentioned functions; it is 1.5 grades that electro connecting pressure gauge of the present utility model is selected precision for use; desirable two point pressures are measured; this instrument can directly monitor the boiler pressure variation situation, can be applied directly to again and export non-electrical signal on the steam boiler.Pressure release automatic control and manual thrust unit, what select for use is dustproof, moistureproof, damp proof 24V single flow electromagnet, expulsive force is 10 kilograms, can satisfy steam boiler pressure " 0-1.6MPa, 0-2.5MPa ".Requirement etc. the vapor pressure parameter of above scope.Power supply is selected the 220V input voltage for use, and control loop meets steam boiler and stipulates required safe voltage with the full-wave rectification of 24V direct current single-phase bridge, has reduced the weight of transformer and control box.The control loop relay adopts small-sized high-power sealed relay, is applicable in the relatively poor environment, can guarantee the sensitive reliable of alarm controller.
Claims (2)
1, steam boiler superpressure alarm controller, be by control box, electro connecting pressure gauge, the electromagnetism thrust unit is formed, it is characterized in that control box panel top is provided with alarm lamp 1, the middle part is provided with relay indicating light 2, inspection machine pilot lamp 3, pressure release interlocking pilot lamp 4, the bottom is provided with turns round sub-switch 5, automatically (manually) gauge tap, inspection machine loop relay 6 normally opened contacts insert pilot lamp and alarm sound loop respectively, the relay 7 in superpressure loop links to each other with a winding point of electro connecting pressure gauge, normally opened contact inserts pilot lamp and alarm sound loop respectively, the relay 8 in interlocked control loop links to each other with another winding point of electro connecting pressure gauge, and normally opened contact inserts pilot lamp, alarm sound loop and interlocked control circuit.
2,, it is characterized in that the electromagnet pusher on one group of normally opened contact access security valve in pressure release loop according to the described steam boiler superpressure of claim 1 alarm controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89209375 CN2056529U (en) | 1989-07-28 | 1989-07-28 | Over pressure warner for steam boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89209375 CN2056529U (en) | 1989-07-28 | 1989-07-28 | Over pressure warner for steam boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2056529U true CN2056529U (en) | 1990-04-25 |
Family
ID=4865906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89209375 Withdrawn CN2056529U (en) | 1989-07-28 | 1989-07-28 | Over pressure warner for steam boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2056529U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101930654A (en) * | 2010-07-13 | 2010-12-29 | 江苏盛虹化纤有限公司 | Pressure air alarming device of elasticizer |
-
1989
- 1989-07-28 CN CN 89209375 patent/CN2056529U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101930654A (en) * | 2010-07-13 | 2010-12-29 | 江苏盛虹化纤有限公司 | Pressure air alarming device of elasticizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |