CN103104909A - Throttling device for high pressure water-feeding pump of industrial boiler - Google Patents
Throttling device for high pressure water-feeding pump of industrial boiler Download PDFInfo
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- CN103104909A CN103104909A CN2012105399589A CN201210539958A CN103104909A CN 103104909 A CN103104909 A CN 103104909A CN 2012105399589 A CN2012105399589 A CN 2012105399589A CN 201210539958 A CN201210539958 A CN 201210539958A CN 103104909 A CN103104909 A CN 103104909A
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- boiler
- throttling
- high pressure
- water
- feeding pump
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Abstract
The invention relates to a throttling device for a high pressure water-feeding pump of an industrial boiler. The throttling device for the high pressure water-feeding pump of the industrial boiler is characterized by comprising a throttling straight pipe, a throttling nozzle installed on an end face of the throttling straight pipe, and a plurality of throttling orifice plates installed in the throttling straight pipe with a 45-degree angle or a 90-degree angle in a staggered mode. The throttling device for the high pressure water-feeding pump of the industrial boiler is installed in front of a first recycling door of a boiler water-feeding pump outlet pipeline, so that output force of a boiler water-feeding pump can be effectively improved, the water amount can be well throttled, water-feeding pressure needed by the boiler is met, and stability of water feeding of the boiler is guaranteed. The operation number of the first recycling door and a second recycling door when the boiler is normally adjusted is reduced, and safe and economical operation of a boiler unit is improved.
Description
Technical field
The present invention relates to a kind of Industrial Boiler high pressure water pump throttling arrangement, be particularly suitable for frequent adjustment of self-contained thermoelectric plant steam boiler and cause feed pump capacity to change comparatively significantly field.
Background technology
Boiler plant is in operation, and because the boiler circuit reciprocation cycle is carried out constantly, keeping boiler carbonated drink balance is the prerequisite that guarantees the boiler plant safe operation, therefore will guarantee the stability of boiler feedwater.High pressure water pump is that the capital equipment at water source is provided to boiler, the vapour electric load of supplying with to outer net due to steam power plant changes comparatively frequent, cause boiler load also in continuous variation, make the boiler adjustment more frequent, guarantee in the boiler adjustment that wherein stablizing of feed pressure, flow is most important.Being adjusted at of boiler feedwater relies on the feedwater throttling arrangement of feedwater outlet conduit installing to carry out when originally designing, because this device design is not too reasonable, lost the effect of throttling feedwater flow.the method of adjustment of now using is with the recirculation of feedwater outlet conduit installing once, the secondary valve is completed, but because of power plant for self-supply's vapour electric load unstable, the frequent adjustment of boiler causes the spool of recirculation (egr) valve at high temperature, appearance wearing and tearing under the washing away of high-pressure feed water pressure, interior leakage increases, the adjustment effect is relatively poor, in order to guarantee the normal operation of boiler feed pump, the frequent recirculation one secondary valve of changing, when adjusting, boiler changes greatly because of feed pressure after changing, pump housing impeller to feed pump causes serious impact, thereby seriously restricting exerting oneself of feed pump, when boiler at low load moves, the feedwater flow that needs is less, can't adjust because of valves leakage causes feed pressure larger, cause safety factor scarcely to boiler plant and pipeline, increase simultaneously plant consumption.When the boiler heavy-duty service, the feedwater flow that needs is larger, but larger owing to leaking in recirculation (egr) valve, adjust to the limit and still can not satisfy feed pump capacity, causing the required feed pressure of boiler to descend affects the safe operation of boiler, in order to guarantee the safe operation of boiler plant, just need to restart a feed pump in such cases, so just increased the consumption of station service, cost payout increases.
Summary of the invention
The object of the invention is to overcome the defective of above-mentioned prior art, a kind of safe, stable, economical operation of effective raising feed pump are provided, thereby guarantee the stability of boiler feedwater, improve the Industrial Boiler high pressure water pump throttling arrangement of the safety and economic operation of unit.
The technical scheme of taking for achieving the above object is:
A kind of Industrial Boiler high pressure water pump throttling arrangement is characterized in that: comprise the throttling straight tube, the end face of described throttling straight tube is equipped with throttle nozzle, and inner stagger arrangement is installed several restricting orifices with 45 ° or 90 ° of angles.
Industrial Boiler high pressure water pump throttling arrangement of the present invention is arranged on the recirculation of boiler feed pump outlet conduit and once locates in front of the door, can effectively improve exerting oneself of boiler feed pump, preferably feedwater flow is played throttling action, satisfy the required feed pressure of boiler, guarantee the stability of boiler feedwater, reduce the number of operations that recycles first and second valve when boiler is normally adjusted, thereby improve the safety and economic operation of unit.
Description of drawings
Fig. 1 is the structural representation sketch of Industrial Boiler high pressure water pump throttling arrangement of the present invention.
The specific embodiment
As shown in Figure 1, Industrial Boiler high pressure water pump throttling arrangement of the present invention comprises throttling straight tube 1, and the end face of described throttling straight tube 1 is equipped with throttle nozzle 3, and inner stagger arrangement is installed several restricting orifices 2 with 45 ° or 90 ° of angles.
During making, first throttle nozzle 3 is welded on the end face of throttling straight tube 1, then successively the restricting orifice stagger arrangement is arranged on throttling straight tube 1 inside with 45 ° or 90 ° of angles, the throttling arrangement that completes is welded on the recirculation of boiler feed pump outlet conduit once locates in front of the door.
Claims (1)
1. Industrial Boiler high pressure water pump throttling arrangement, it is characterized in that: comprise throttling straight tube (1), the end face of described throttling straight tube (1) is equipped with throttle nozzle (3), and inner stagger arrangement is installed several restricting orifices (2) with 45 ° or 90 ° of angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105399589A CN103104909A (en) | 2012-12-14 | 2012-12-14 | Throttling device for high pressure water-feeding pump of industrial boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105399589A CN103104909A (en) | 2012-12-14 | 2012-12-14 | Throttling device for high pressure water-feeding pump of industrial boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103104909A true CN103104909A (en) | 2013-05-15 |
Family
ID=48312979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105399589A Pending CN103104909A (en) | 2012-12-14 | 2012-12-14 | Throttling device for high pressure water-feeding pump of industrial boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103104909A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05272707A (en) * | 1992-03-25 | 1993-10-19 | Mitsubishi Heavy Ind Ltd | Boiler water feeding control device |
| CN2227240Y (en) * | 1995-02-27 | 1996-05-15 | 上海平安高压调节阀门厂 | Minimum discharge controlled valve for boiler water supply pump |
| CN201505675U (en) * | 2009-09-19 | 2010-06-16 | 山西太钢不锈钢股份有限公司 | High-pressure water throttling device |
| CN202991442U (en) * | 2012-12-14 | 2013-06-12 | 中冶美利纸业股份有限公司 | Throttling gear for boiler feed pump |
-
2012
- 2012-12-14 CN CN2012105399589A patent/CN103104909A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05272707A (en) * | 1992-03-25 | 1993-10-19 | Mitsubishi Heavy Ind Ltd | Boiler water feeding control device |
| CN2227240Y (en) * | 1995-02-27 | 1996-05-15 | 上海平安高压调节阀门厂 | Minimum discharge controlled valve for boiler water supply pump |
| CN201505675U (en) * | 2009-09-19 | 2010-06-16 | 山西太钢不锈钢股份有限公司 | High-pressure water throttling device |
| CN202991442U (en) * | 2012-12-14 | 2013-06-12 | 中冶美利纸业股份有限公司 | Throttling gear for boiler feed pump |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130515 |