CN203488361U - Water-feeding pump warming-up water control device in conventional island - Google Patents
Water-feeding pump warming-up water control device in conventional island Download PDFInfo
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- CN203488361U CN203488361U CN201320545358.3U CN201320545358U CN203488361U CN 203488361 U CN203488361 U CN 203488361U CN 201320545358 U CN201320545358 U CN 201320545358U CN 203488361 U CN203488361 U CN 203488361U
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- water
- warming
- orifice plate
- pressure
- feeding pump
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Abstract
The utility model discloses a water-feeding pump warming-up water control device in a conventional island. The water-feeding pump warming-up water control device comprises an outer barrel provided with a water inlet and a water outlet, wherein the outer barrel is internally provided with a water flow stepwise pressure reducing device; the water flow stepwise pressure reducing device is respectively communicated with the water inlet and the water outlet; the water flow stepwise pressure reducing device comprises inner partition boards and pore plates; the inner partition boards are parallel to the flowing direction of water flow; the pore plates are vertical to the flowing direction of water flow; the inner partition boards and the pore plates form a pressure reducing cavity; the pressure of high-pressure feed-water flowing at the water inlet is reduced, and the flow rate of water flow is controlled. The pressure of high-pressure feed-water is reduced and the flow rate is controlled by a warming-up water pressure reducing device, and water is uniformly converted into warming-up water and injected in a pump body of a standby water-feeding pump; the temperature difference from top to bottom of a pump case of the water-feeding pump is smaller than 60 DEG C, and the starting safety of the water-feeding pump is improved; moreover, the device does not need to be adjusted, can be used permanently after one-step installation, and cannot bring about extra maintenance amount.
Description
Technical field
The utility model relates to feed water pump field, is specifically related to a kind of conventional island feed water pump warming-up water controller.
Background technique
Feed water pump plays a part crucial in the secondary coolant circuit system of nuclear power station.Its safety is directly connected to the security of operation of feed water pump.Under it is in stand-by state, feed water pump need to carry out warming-up, to guarantee being no more than 60 ℃ at feedwater pump case upper and lower temperature difference.After feed water pump starts, feed water pump can not produce thermal distortion.
Warming-up water is generally taken from the high-pressure heater pipeline of feed water pump outlet, and this piped water temperature is higher, and pressure is also higher, can not be directly connected on feed water pump as warming-up water.Must to the feedwater of high-pressure heater reduce pressure and flow control after just access feed water pump as warming-up water.
Therefore, design reliable warming-up water controller just important to the reliability of feed water pump.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of conventional island feed water pump warming-up water controller, and after reducing pressure, feed water pump is evenly injected in feedwater, to protect feed water pump not occur thermal distortion under stand-by state, improves the object of feed water pump Security.
For achieving the above object, the technical solution of the utility model is as follows:
A conventional island feed water pump warming-up water controller, comprising:
One arranges the urceolus of water intake and water outlet,
One current decompressor is step by step set in described urceolus, and described current step by step decompressor are communicated with respectively water intake and water outlet,
Described current step by step decompressor comprise internal partition and orifice plate, described internal partition is parallel to flow direction, orifice plate is perpendicular to flow direction, and internal partition and orifice plate form a decompression cavity, and the high-pressure feed water that water intake is flowed into reduces pressure and controls water flow.
In a preferred embodiment of the present utility model, described current step by step decompressor consist of a pair of internal partition and at least 5 orifice plates, described orifice plate is installed on internal partition side by side, and orifice plate is separated into individual cavity by internal partition, and all offers a vent on described each orifice plate.
In a preferred embodiment of the present utility model, also comprise an enlarging, described enlarging one end connects a vent, and the enlarging the other end connects water outlet.
In a preferred embodiment of the present utility model, described enlarging is a taper, and is connected with water outlet by a T-shaped hole.
In a preferred embodiment of the present utility model, described urceolus and orifice plate are that forging stainless steel is made.
By technique scheme, the beneficial effects of the utility model are:
By warming-up water decompressor, high-pressure feed water reduced pressure and control flow, equably feedwater being changed into warming-up water and inject in the standby feed water pump pump housing; Make the upper and lower temperature difference of feed water pump pump case be less than 60 ℃, improved the Security that feed water pump starts; And this device, without adjusting, can forever be used after once mounting, can not bring unnecessary maintenance.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is structural representation of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Feed water pump, under the state of stand-by heat, must carry out warming-up to feed water pump, makes feed water pump upper and lower temperature difference be controlled at 60 ℃.Could start and allow feed water pump pump case be unlikely to occur thermal stratification in pump group like this.The warming-up water of feed water pump adds front feedwater piping from height, approximately 180 ℃ of feed temperatures, pressure 9MPa.According to warming-up requirement, confluent can not be too large, and pressure can not be too high.The warming-up water that so just need to draw Gao Jiaqian reduces pressure and the device of flow control.As shown in Figure 1, be a kind of conventional island feed water pump warming-up water controller, comprising:
One arranges the urceolus 100 of water intake 101 and water outlet 102,
At the interior current decompressor 200 step by step that arranges of urceolus 100, current step by step decompressor are communicated with respectively water intake 101 and water outlet 102,
Current step by step decompressor 200 consist of a pair of internal partition 201 and at least 5 orifice plates 202, and orifice plate 202 is installed on internal partition 201 side by side, and orifice plate 202 is separated into individual cavity by internal partition 201, from illustrating, on each orifice plate 202, offer respectively vent 203,204,205,206,207
During work, feedwater enters cavity, flow to first orifice plate, during through the first vent 203 of this first orifice plate, pressure decreased is to 1/2 of inlet pressure, sealing water flows to second orifice plate from first orifice plate flows out, and the rear pressure decreased of the second vent 204 that enters second orifice plate is inlet pressure 1/3, by this, analogizes, the 5th vent 207 outlet ports of an orifice plate in the end, feed pressure drops to 1/6 of device import.
Also comprise an enlarging 300, enlarging 300 is a taper, and the tapered end 301 of this taper enlarging 300 connects one the 5th vent 207, and the transitioning end 302 of taper enlarging 300 is connected with water outlet 102 by a T-shaped hole 400, enlarging 300 can, by feedwater flow, pressure stability, be played a buffer function.Warming-up water flow is controlled to 5m
3within/h, warming-up water is injected to the feed water pump pump housing equably.
Stack shell at urceolus 100 is provided with 4 butt welding point 400, is convenient to processing, and fixing water intake 101 pipe joints successively, and current are decompressor 200 step by step, enlarging 300 and water outlet 102 pipe joints.
This device is applicable to the occasion of long-time running, and the in the situation that of AP1000 operation throughout the year, feed pressure maintains under a more stable pressure throughout the year substantially.Adopt this device, can effectively reach function and the Maintenance free of decompression and control flow, replaced the modulating valve on pipeline, reduced cost and maintenance cost.
More than show and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. a conventional island feed water pump warming-up water controller, comprising:
One arranges the urceolus of water intake and water outlet,
It is characterized in that, current decompressor is step by step set in described urceolus, and described current step by step decompressor are communicated with respectively water intake and water outlet,
Described current step by step decompressor comprise internal partition and orifice plate, described internal partition is parallel to flow direction, orifice plate is perpendicular to flow direction, and internal partition and orifice plate form a decompression cavity, and the high-pressure feed water that water intake is flowed into reduces pressure and controls water flow.
2. a kind of conventional island feed water pump warming-up water controller according to claim 1, it is characterized in that: described current step by step decompressor consist of a pair of internal partition and at least 5 orifice plates, described orifice plate is installed on internal partition side by side, orifice plate is separated into individual cavity by internal partition, and all offers a vent on described each orifice plate.
3. a kind of conventional island feed water pump warming-up water controller according to claim 1, is characterized in that: also comprise an enlarging, described enlarging one end connects a vent, and the enlarging the other end connects water outlet.
4. a kind of conventional island feed water pump warming-up water controller according to claim 3, is characterized in that: described enlarging is a taper, and is connected with water outlet by a T-shaped hole.
5. a kind of conventional island feed water pump warming-up water controller according to claim 2, is characterized in that: described urceolus and orifice plate are that forging stainless steel is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320545358.3U CN203488361U (en) | 2013-09-03 | 2013-09-03 | Water-feeding pump warming-up water control device in conventional island |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320545358.3U CN203488361U (en) | 2013-09-03 | 2013-09-03 | Water-feeding pump warming-up water control device in conventional island |
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| Publication Number | Publication Date |
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| CN203488361U true CN203488361U (en) | 2014-03-19 |
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| CN201320545358.3U Expired - Fee Related CN203488361U (en) | 2013-09-03 | 2013-09-03 | Water-feeding pump warming-up water control device in conventional island |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939953A (en) * | 2017-03-31 | 2017-07-11 | 中核核电运行管理有限公司 | A kind of wear resistant filler lining throttle orifice component of sherardizing steel |
| CN112443673A (en) * | 2020-11-30 | 2021-03-05 | 湖南汉华京电清洁能源科技有限公司 | Pressure relief assembly |
-
2013
- 2013-09-03 CN CN201320545358.3U patent/CN203488361U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939953A (en) * | 2017-03-31 | 2017-07-11 | 中核核电运行管理有限公司 | A kind of wear resistant filler lining throttle orifice component of sherardizing steel |
| CN112443673A (en) * | 2020-11-30 | 2021-03-05 | 湖南汉华京电清洁能源科技有限公司 | Pressure relief assembly |
| CN112443673B (en) * | 2020-11-30 | 2022-09-20 | 湖南汉华京电清洁能源科技有限公司 | Pressure relief assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA POWER CONSTRUCTION GROUP ENERGY EQUIPMENT CO Free format text: FORMER NAME: SHANGHAI POWER BUILDING AND REPAIRING GENERAL FACTORY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 201316, Shanghai, Pudong New Area Town, barley Bay Industrial Zone, air route 80 - 86 Patentee after: POWERCHINA SPEM COMPANY LIMITED Patentee after: JIANGSU HUADIAN JURONG POWER GENERATION CO., LTD. Address before: 201316, Shanghai, Pudong New Area Town, barley Bay Industrial Zone, air route 80 - 86 Patentee before: Shanghai Power Equipment Manufacture Co., Ltd. Patentee before: JIANGSU HUADIAN JURONG POWER GENERATION CO., LTD. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 Termination date: 20200903 |
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| CF01 | Termination of patent right due to non-payment of annual fee |