CN205349783U - Boiler circulating pump safety arrangement - Google Patents
Boiler circulating pump safety arrangement Download PDFInfo
- Publication number
- CN205349783U CN205349783U CN201521090894.4U CN201521090894U CN205349783U CN 205349783 U CN205349783 U CN 205349783U CN 201521090894 U CN201521090894 U CN 201521090894U CN 205349783 U CN205349783 U CN 205349783U
- Authority
- CN
- China
- Prior art keywords
- circulating pump
- relay
- pump
- circulation pump
- flow switch
- 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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Abstract
The utility model relates to a boiler circulating pump safety arrangement comprises main circulating pump, stand -by circulating pump, pipeline, valve and control system. Main circulating pump and stand -by circulating pump include motor, shaft coupling and the pump body. Control system includes flow switch, relay and circuit. The utility model discloses a flow switch comes the control relay to open and close, and the motor of main circulating pump, stand -by circulating pump and air -blower is controlled respectively to the relay, can realize the unexpected termination of pumping of main circulating pump after, automatic start stand -by circulating pump, under the condition of main circulating pump and the equal termination of pumping of stand -by circulating pump, the air -blower auto -stop.
Description
Technical field
This utility model relates to a kind of safety guard, especially a kind of hot-water boiler safety guard.
Background technology
According to " boiler safety technology Supervision Code " pertinent regulations, for the unexpected termination of pumping of circulating pump of hot-water boiler, the measure taked mainly has two.One is " should install the bypass pipe with check-valves before and after water circulating pump between pipeline, or take other to prevent the measure of unexpected termination of pumping generation water attack.", two is " B level boiler and the thermal power rating C level boiler more than or equal to 7MW, it should installing excess temperature alarm device and interlocking protective device.", three it is that " grate firing boiler should be provided with and attend the meeting generation vaporization or when water temperature has exceeded setting and water circulating pump shuts down suddenly when the pressure of boiler reduces, and automatically cuts off the device of drum, air inducing."
Disclosed Patents mainly has at present:
1) China Patent No. 200620045191.4, intelligent protection monitoring water circulating pump, this utility model utilizes flow transducer, temperature rise sensor and vibrating sensor predict and monitor the inefficacy of water circulating pump bearing.
2) China Patent No. 200520144408.2, a kind of device controlling the standby startup mutually of generating plant circulation-water pump, when an operating water pump trips because of certain reason, automatically control the standby startup mutually of another circulating pump, to ensure the safety and economic operation of unit equipment.
Summary of the invention
This utility model is to provide for a kind of circulation pump of hot water boiler safety guard, after this device can realize main circulation pump accident termination of pumping, when automatically starting the equal termination of pumping of spare circulating pump, main circulation pump and spare circulating pump, and aerator autostop.
For achieving the above object, the technical solution of the utility model is: a kind of circulation pump of hot water boiler safety guard, is made up of main circulation pump, spare circulating pump, pipeline, valve and control system.Main circulation pump and spare circulating pump are made up of motor, shaft coupling and the pump housing respectively.Control system includes flow switch, relay and circuit.Flow switch controls relay and opens and closes, and relay controls the motor of main circulation pump, spare circulating pump and aerator respectively.When, after main circulation pump accident termination of pumping, flow switch closes, and automatically starts spare circulating pump.When main circulation pump and the equal termination of pumping of spare circulating pump, flow switch closes, aerator autostop, it is achieved blowing out automatically.
The beneficial effects of the utility model are in that:
1, after this utility model can realize main circulation pump accident termination of pumping, spare circulating pump is automatically started, it is ensured that safe operation of the boiler.
2, when this utility model main circulation pump and the equal termination of pumping of spare circulating pump, aerator autostop, it is achieved blowing out automatically, it is to avoid major accident occurs.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model；
Fig. 2 is control circuit figure of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail with embodiment.
As it is shown in figure 1, circulation pump of hot water boiler safety guard of the present utility model, it is made up of main circulation pump, spare circulating pump, pipeline, valve and control system.Main circulation pump includes motor 9, shaft coupling 8 and the pump housing 7.Spare circulating pump includes motor 10, shaft coupling 11 and the pump housing 12.
As in figure 2 it is shown, control system includes flow switch 6, flow switch 13, relay K 1NO, relay K 2NO, relay K 1NC, relay K 2NC, relay K 3NCAnd circuit.Described flow switch 6 is arranged on the pipeline 3 between main circulation pump 7 and check-valves 5, and described flow switch 13 is arranged on the pipeline 13 between spare circulating pump 12 and check-valves 14.Described relay K 1NO, relay K 2NO, relay K 3NCControl motor 9, motor 10 and aerator 18 respectively.
The workflow of circulation pump of hot water boiler safety guard: when boiler 1 is properly functioning, motor 9 drives main circulation pump 7 to operate, and circulating water flow enters boiler 1 through pipeline 17, main circulation pump 7, flow switch 6, check-valves 5, stop valve 4, pipeline 3, pipeline 2.When main circulation pump 7 unexpected termination of pumping, the circulating water flow in main circulation pump 7 exit reduces suddenly so that flow switch 6 closes, trigger relay K2NOGuan Bi, relay K 2NOControlling motor 10 to start, motor 10 drives spare circulating pump 12 to operate, and circulating water flow enters boiler 1 through pipeline 17, spare circulating pump 12, flow switch 13, check-valves 14, stop valve 15, pipeline 16, pipeline 2, it is ensured that boiler 1 safe operation.When main circulation pump 7 and spare circulating pump 12 lost efficacy simultaneously, flow switch 6 and flow switch 13 all close, trigger relay K1NO, relay K 2NOGuan Bi, simultaneously trigger relay K1NC, relay K 2NCDisconnect, relay K 1NC, relay K 2NCControl relay K 3NCDisconnect, last relay K 3NCControl aerator 18 to shut down, boiler 1 blowing out, it is to avoid boiler 1 has an accident.
Claims (3)
1. a circulation pump of hot water boiler safety guard; it is made up of main circulation pump, spare circulating pump, pipeline, valve and control system; main circulation pump includes motor (9), shaft coupling (8) and the pump housing (7); spare circulating pump includes motor (10), shaft coupling (11) and the pump housing (12), it is characterised in that: described control system includes flow switch (6), flow switch (13), relay K 1NO, relay K 2NO, relay K 1NC, relay K 2NC, relay K 3NCAnd circuit.
2. circulation pump of hot water boiler safety guard according to claim 1; it is characterized in that: described flow switch (6) is arranged on the pipeline (3) between main circulation pump (7) and check-valves (5), described flow switch (13) is arranged on the pipeline (16) between spare circulating pump (12) and check-valves (14).
3. circulation pump of hot water boiler safety guard according to claim 1, it is characterised in that: described relay K 1NO, relay K 2NO, relay K 3NCControl motor (9), motor (10) and aerator (18) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521090894.4U CN205349783U (en) | 2015-12-24 | 2015-12-24 | Boiler circulating pump safety arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521090894.4U CN205349783U (en) | 2015-12-24 | 2015-12-24 | Boiler circulating pump safety arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205349783U true CN205349783U (en) | 2016-06-29 |
Family
ID=56170136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521090894.4U Expired - Fee Related CN205349783U (en) | 2015-12-24 | 2015-12-24 | Boiler circulating pump safety arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205349783U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019148544A1 (en) * | 2018-01-31 | 2019-08-08 | 苏州优德通力科技有限公司 | Combined sewage pump with novel standby pump structure |
| CN110412936A (en) * | 2019-07-29 | 2019-11-05 | 新余钢铁股份有限公司 | A kind of emergency flight control system of heating furnace vaporization hot water circulating pump |
-
2015
- 2015-12-24 CN CN201521090894.4U patent/CN205349783U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019148544A1 (en) * | 2018-01-31 | 2019-08-08 | 苏州优德通力科技有限公司 | Combined sewage pump with novel standby pump structure |
| CN110412936A (en) * | 2019-07-29 | 2019-11-05 | 新余钢铁股份有限公司 | A kind of emergency flight control system of heating furnace vaporization hot water circulating pump |
| CN110412936B (en) * | 2019-07-29 | 2021-08-03 | 新余钢铁股份有限公司 | Emergency control system of heating furnace vaporization hot water circulating pump |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160629 Termination date: 20171224 |