CN202991442U - Throttling gear for boiler feed pump - Google Patents
Throttling gear for boiler feed pump Download PDFInfo
- Publication number
- CN202991442U CN202991442U CN 201220689561 CN201220689561U CN202991442U CN 202991442 U CN202991442 U CN 202991442U CN 201220689561 CN201220689561 CN 201220689561 CN 201220689561 U CN201220689561 U CN 201220689561U CN 202991442 U CN202991442 U CN 202991442U
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- CN
- China
- Prior art keywords
- throttling
- boiler
- feed pump
- boiler feed
- straight pipe
- 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 throttling gear for a boiler feed pump, which is characterized by including a throttling straight pipe, wherein a throttling nozzle is mounted on the end surface of the throttling straight pipe; and a plurality of throttling orifice plates mounted at the angle of 45 degrees or 90 degrees are staggered inside the throttling straight pipe. The throttling gear for the boiler feed pump is mounted in front of a recycling primary valve of an outlet pipeline of the boiler feed pump, effectively improves the output of the boiler feed pump, better plays the role of water flow throttling, meets required pressure of the boiler for water supply, guarantees the stability of the boiler for water supply, and reduces the operating frequency of the recycling primary valve and a recycling secondary valve in case of normal adjustment, thereby improving the safe and economic operation of a unit.
Description
Technical field
The utility model relates to a kind of boiler feed pump throttling arrangement, is particularly suitable for frequent adjustment of self-contained thermoelectric plant steam boiler and causes feed pump capacity to change comparatively significantly field.
Background technique
Boiler equipment 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 equipment safe operation, therefore will guarantee the stability of boiler feed water.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 thermoelectricity 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 feed water 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 adjusting method 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 water pump causes serious impact, thereby seriously restricting exerting oneself of feed water 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 factor of safety scarcely to boiler equipment and pipeline, increase simultaneously plant consumption.When the boiler high load running, 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 equipment, just need to restart a feed water pump in such cases, so just increased the consumption of station service, cost payout increases.
Summary of the invention
The purpose of this utility model is to overcome the defective of above-mentioned prior art, and a kind of safe, stable, economical operation of effective raising feed water pump are provided, thereby guarantees the stability of boiler feed water, improves the boiler feed pump throttling arrangement of the safety and economic operation of unit.
For realizing that the technological scheme that above-mentioned model utility purpose is taked is:
A kind of boiler feed 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.
Boiler feed pump throttling arrangement of the present utility model 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 feed water, the number of times of operation of recirculation first and second valve when the reduction boiler is normally adjusted, thereby the safety and economic operation of raising unit.
Description of drawings
Fig. 1 is the structural representation sketch of the utility model boiler feed pump throttling arrangement.
Embodiment
As shown in Figure 1, boiler feed pump throttling arrangement of the present utility model 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. boiler feed 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 |
|---|---|---|---|
| CN 201220689561 CN202991442U (en) | 2012-12-14 | 2012-12-14 | Throttling gear for boiler feed pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220689561 CN202991442U (en) | 2012-12-14 | 2012-12-14 | Throttling gear for boiler feed pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202991442U true CN202991442U (en) | 2013-06-12 |
Family
ID=48562628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220689561 Expired - Fee Related CN202991442U (en) | 2012-12-14 | 2012-12-14 | Throttling gear for boiler feed pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202991442U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104909A (en) * | 2012-12-14 | 2013-05-15 | 中冶美利纸业股份有限公司 | Throttling device for high pressure water-feeding pump of industrial boiler |
-
2012
- 2012-12-14 CN CN 201220689561 patent/CN202991442U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104909A (en) * | 2012-12-14 | 2013-05-15 | 中冶美利纸业股份有限公司 | Throttling device for high pressure water-feeding pump of industrial boiler |
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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: 20130612 Termination date: 20141214 |
|
| EXPY | Termination of patent right or utility model |