CN201925145U - Automatic control device of boiler reserved water pump - Google Patents
Automatic control device of boiler reserved water pump Download PDFInfo
- Publication number
- CN201925145U CN201925145U CN2011200397319U CN201120039731U CN201925145U CN 201925145 U CN201925145 U CN 201925145U CN 2011200397319 U CN2011200397319 U CN 2011200397319U CN 201120039731 U CN201120039731 U CN 201120039731U CN 201925145 U CN201925145 U CN 201925145U
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- water level
- relay
- low water
- boiler
- contact
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Abstract
The utility model relates to an automatic control device of a boiler reserved water pump, which comprises a boiler water level control instrument and an automatic control device of the reserved water pump, wherein the automatic control device is provided with a high water level alarm contact, a low water level alarm contact and a dangerous low water level alarm contact. The automatic control device of the boiler reserved water pump comprises a high water level relay, a low water level relay and a switch contactor of the reserved water pump. The high water level relay triggered by the high water level alarm contact is a normally-closed relay, and a coil of the high water level relay is connected with a power supply through the high water level alarm contact. The low water level relay triggered by the low water level alarm contact is a normally-open relay, and a coil of the low water level relay is connected with the power supply through the low water level alarm contact. A coil of the switch contactor of the reserved water pump is connected with a parallel branch in series and then connected with a power supply, and the parallel branch is formed through the connection of a contact of the low water level relay and a contact of the switch contactor of the reserved water pump in parallel. The on-off state of the reserved water pump is controlled through the relays. The automatic control device needs no operators to operate so as to save the labor resources and protect the boiler equipment, and the structure is simple.
Description
Technical field
The utility model relates to a kind of fixture of boiler, relates in particular to reserve pump automatic controller in a kind of boiler water level control system.
Background technique
At present, all have two water pumps in the water level control system of general boiler, two water pumps are connected in parallel on the water pipe, regulate the size that electric valve opens and closes by the water level control instrument, control the flow size of water inlet.But two one on water pumps are long-term water supply, and one is standby.Stop to supply water when the water pump of long-term water supply breaks down, perhaps because of night flow minimizing cause boiler water level full water situation, at this moment the operator can close the water pump of long-term water supply.And this moment, reserve pump cut out, when drawdown to low water level even danger low water level, long-term water pump and the reserve pump that supplies water all is to manually boot, if long-term water pump fault or the operator who supplies water leaves the post temporarily, can cause the boiler dry combustion method, dangerous situation occur.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of control gear of controlling reserve pump according to water level automatically.
For solving the problems of the technologies described above, the utility model is by the following technical solutions: a kind of boiler reserve pump automatic controller, the water level control instrument and the reserve pump automatic controller that comprise boiler, the water level control instrument of boiler comprises the high water-level alarm contact, the Alarm contactor of low water level Alarm contactor and danger low water level, described boiler reserve pump automatic controller comprises the high water level relay, low water level relay and reserve pump switch contact, the high water level relay that is triggered by the high water-level alarm contact is a normally closed relay, and the coil of high water level relay is connected with power supply by the high water-level alarm contact; The low water level relay that is triggered by the low water level Alarm contactor is a normally opened relay, and the coil of low water level relay is connected with power supply by the low water level Alarm contactor; The coil of reserve pump switch contact is connected with power supply with the parallel branch series connection back that contact by the contact of low water level relay, reserve pump switch contact is formed in parallel.
Described danger low water level Alarm contactor be connected in parallel by the contact of low water level relay, the parallel branch that the contact of reserve pump switch contact is formed in parallel.
Preferably boiler reserve pump automatic controller also is provided with a manual turn on pump button, and manually the turn on pump button is connected in the coil circuit of reserve pump switch contact.
Adopt the boiler reserve pump automatic controller of technique scheme,, control closing of reserve pump by relay owing to utilize the Alarm contactor output of high water level, low water level and the danger low water level of original water level control instrument.When drawdown arrived low water level and danger low water level, the automatically starting reserve pump was to boiler water supply; When water level rises to high water level gradually, can close reserve pump automatically, expanded the function of original water level control instrument, guaranteed that long-term water supply pump breaks down and night shift boiler water supply in particular cases.This device need not personnel operation, and save human resources and protected boiler equipment again, and simple in structure.
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is a kind of embodiment's of the utility model boiler reserve pump automatic controller circuit theory diagrams.
Fig. 2 is the port wiring schematic diagram of boiler water level control instrument.
Fig. 3 is the circuit erection drawing of Fig. 1.
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, a kind of embodiment of the utility model boiler reserve pump automatic controller, the water level control instrument of boiler has high water-level alarm contact a, low water level Alarm contactor b, danger low water level Alarm contactor c, and boiler reserve pump automatic controller comprises high water level relay K M1, low water level relay K M2, reserve pump switch contact KM3 and manual turn on pump button SB2.The high water level relay K M1 that is connected control with high water-level alarm contact a is a normally closed relay, and the coil of high water level relay is connected with power supply by the high water-level alarm contact.The low water level relay K M2 that is connected control with low water level Alarm contactor b is a normally opened relay, and the coil of low water level relay is connected with power supply by the low water level Alarm contactor.The coil of reserve pump switch contact KM3 is connected with power supply with the parallel branch series connection back that contact by the contact of low water level relay K M2, reserve pump switch contact KM3 is formed in parallel.Manually turn on pump button SB2 is connected in the coil circuit of reserve pump switch contact (KM3), when can be used for test and also be used for low water level Alarm contactor b and break down, can manually start boiler reserve pump automatic controller and open reserve pump.
Open the power switch SB1 of boiler reserve pump automatic controller, when drawdown arrives low water level or danger low water level, low water level Alarm contactor b triggers or danger low water level Alarm contactor c triggers the feasible low water level relay K M2 closure of often opening, this moment, normally closed high water level relay K M1 was in closed state, reserve pump switch contact KM3 adhesive, the reserve pump that automatic startup is attached thereto is to boiler water supply.When water level is increased to high water level gradually, touch high water-level alarm contact a, make normally closed high water level relay K M1 open, often open low water level relay K M2 and reset, reserve pump switch contact KM3 disconnects, and reserve pump cuts out.Guaranteed that thus long raw water service pump breaks down or night shift boiler water supply in particular cases.
Claims (3)
1. boiler reserve pump automatic controller, the water level control instrument and the reserve pump automatic controller that comprise boiler, the water level control instrument of boiler comprises high water-level alarm contact (a), the Alarm contactor (c) of low water level Alarm contactor (b) and danger low water level, it is characterized in that: described boiler reserve pump automatic controller comprises high water level relay (KM1), low water level relay (KM2) and reserve pump switch contact (KM3), the high water level relay that is triggered by the high water-level alarm contact is a normally closed relay, and the coil of high water level relay is connected with power supply by the high water-level alarm contact; The low water level relay that is triggered by the low water level Alarm contactor is a normally opened relay, and the coil of low water level relay is connected with power supply by the low water level Alarm contactor; The coil of reserve pump switch contact is connected with power supply with the parallel branch series connection back that contact by the contact of low water level relay (KM2), reserve pump switch contact (KM3) is formed in parallel.
2. boiler reserve pump automatic controller according to claim 1 is characterized in that: also comprise a manual turn on pump button (SB2), manually turn on pump button (SB2) is connected in the coil circuit of reserve pump switch contact (KM3).
3. require 1 or 2 described boiler reserve pump automatic controllers according to power, it is characterized in that: described danger low water level Alarm contactor be connected in parallel by the contact of low water level relay (KM2), the parallel branch that the contact of reserve pump switch contact (KM3) is formed in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200397319U CN201925145U (en) | 2011-02-16 | 2011-02-16 | Automatic control device of boiler reserved water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200397319U CN201925145U (en) | 2011-02-16 | 2011-02-16 | Automatic control device of boiler reserved water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201925145U true CN201925145U (en) | 2011-08-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200397319U Expired - Fee Related CN201925145U (en) | 2011-02-16 | 2011-02-16 | Automatic control device of boiler reserved water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201925145U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103019131A (en) * | 2012-11-23 | 2013-04-03 | 苏州优德通力电气有限公司 | Controller for stand-by pump |
| CN104196704A (en) * | 2014-07-31 | 2014-12-10 | 徐家成 | Method for controlling sewage pump |
| CN106704212A (en) * | 2016-12-29 | 2017-05-24 | 中国能源建设集团华北电力试验研究院有限公司 | Undisturbed switching control method for standby pump of electrically-driven feed pumps |
| CN107288209A (en) * | 2017-08-14 | 2017-10-24 | 淮南矿业(集团)有限责任公司 | Boiler room cesspool self-draining arrangement and its electric-control system |
-
2011
- 2011-02-16 CN CN2011200397319U patent/CN201925145U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103019131A (en) * | 2012-11-23 | 2013-04-03 | 苏州优德通力电气有限公司 | Controller for stand-by pump |
| CN104196704A (en) * | 2014-07-31 | 2014-12-10 | 徐家成 | Method for controlling sewage pump |
| CN104196704B (en) * | 2014-07-31 | 2016-06-15 | 徐家成 | Dredge pump control method |
| CN106704212A (en) * | 2016-12-29 | 2017-05-24 | 中国能源建设集团华北电力试验研究院有限公司 | Undisturbed switching control method for standby pump of electrically-driven feed pumps |
| CN107288209A (en) * | 2017-08-14 | 2017-10-24 | 淮南矿业(集团)有限责任公司 | Boiler room cesspool self-draining arrangement and its electric-control system |
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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: 20110810 Termination date: 20180216 |
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| CF01 | Termination of patent right due to non-payment of annual fee |