CN202380520U - Adjustable water supply system based on constant-speed pump - Google Patents
Adjustable water supply system based on constant-speed pump Download PDFInfo
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- CN202380520U CN202380520U CN2011205407853U CN201120540785U CN202380520U CN 202380520 U CN202380520 U CN 202380520U CN 2011205407853 U CN2011205407853 U CN 2011205407853U CN 201120540785 U CN201120540785 U CN 201120540785U CN 202380520 U CN202380520 U CN 202380520U
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- water supply
- speed pump
- supply system
- water
- constant
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Abstract
The utility model relates to an adjustable water supply system based on a constant-speed pump. The adjustable water supply system comprises a constant-speed pump and a water supply pipeline positioned between the constant-speed pump and a boiler water inlet; a main path adjusting valve and a secondary path adjusting valve are arranged at a water inlet of the constant-speed pump; the constant-speed pump is connected with a water supply adjusting control device for adjusting the opening ratio of the main path adjusting valve and the secondary path adjusting valve; and the water supply adjusting control device is a liquid coupler or a variable-frequency governor. With the adoption of the adjustable water supply system, the water supply system is used for adjusting in real time according to actual requirements, so that a great amount of water is supplied to a boiler by operating the water supply adjusting control device when a great amount of the water is needed to be supplied. Moreover, when a great amount of the water does not need to be supplied, a less amount of the water can be supplied to the boiler, so that the fault frequency of the water supply system is reduced.
Description
Technical field
The utility model relates to steam-gas Combined circulating generation unit water supply facilities technical field, is specifically related to the scalable water supply system based on constant speed pump.
Background technology
Employing steam-when gas Combined circulating generation unit generates electricity; The water supply system fault of each boiler frequently is the great difficult problem of each power plant of puzzlement always, and the water supply system fault mainly shows as: feed-water valve bite, door core black box damage or fracture of valve spool alignment pin and valve rod fracture etc.Not only influenced by multiple complicated factor relevant with Feed Water Regulation System the water supply system fault frequently to occur; Also often occur changing substantial connection is arranged with the running status of Feed Water Regulation System; Can cause the feedwater piping vibration when Feed Water Regulation System breaks down or produce noise; Frequent feedwater fault even can cause generating set accidents such as unplanned stoppage in transit to occur, final influence generating production capacity stability, and give peak load regulation network ability deleterious impact.
Summary of the invention
The technical problem that the utility model will solve provides that a kind of fault occurrence frequency is low, the adjustable scalable water supply system based on constant speed pump is stablized in feedwater.
For solving the problems of the technologies described above; The utility model adopts following technical scheme: a kind of scalable water supply system based on constant speed pump; Comprise constant speed pump and be connected in constant speed pump and the boiler feed water mouth between feedwater piping; The delivery port of said constant speed pump is provided with main road control valve and bypass valve, and constant speed pump is connected with the feedwater control set for adjusting that is used to regulate main road control valve and bypass valve aperture ratio.
Said feedwater control set for adjusting is specially fluid coupling or variable-frequency governor.
Through above technical scheme; Can realize according to actual needs water supply system is carried out real-time regulated; Thereby when needs supply water in a large number, can to boiler more water be provided through controlling the feedwater control set for adjusting, and when not needing to supply water in a large number; For boiler provides less water, and then reduce the water supply system failure-frequency.
The utility model is except carrying out above improvement; Also the valve mechanism to main road control valve and bypass valve improves; The spool and the valve rod junction of main road control valve and bypass valve are added solid welding calmly; To increase the steadiness that is connected between spool and the valve rod, in addition through increasing at spool through improving the joint ring of abrasion resistance and flexibility, the sealing of enhancing valve.More than improve the generation that all can effectively avoid feed-water valve bite, the black box damage of door core or faults such as fracture of valve spool alignment pin and valve rod fracture.
The utility model compared with prior art; Its beneficial effect is: the utility model is provided with main road control valve and bypass valve at the delivery port of constant speed pump, and on constant speed pump, is connected with the feedwater control set for adjusting that is used to regulate main road control valve and bypass valve aperture ratio.Thereby realize to realize according to actual needs water supply system is carried out real-time regulated, ensure that water supply system is stablized according to regulating, adjustable water supply, and then reduce the water supply system failure-frequency.
Description of drawings
Fig. 1 is the utility model example structure schematic block diagram.
The specific embodiment
For the ease of those skilled in the art's understanding, will combine specific embodiment and accompanying drawing that the utility model structural principle is done further to describe in detail below.
As shown in Figure 1; Present embodiment has disclosed that a kind of fault occurrence frequency is low, the adjustable scalable water supply system based on constant speed pump is stablized in feedwater; It comprises constant speed pump 1 and be connected in constant speed pump and the boiler feed water mouth between feedwater piping 2; The delivery port of constant speed pump 1 is provided with main road control valve 11 and bypass valve 12, and constant speed pump is connected with the feedwater control set for adjusting 13 that is used to regulate main road control valve and bypass valve aperture ratio, and the control set for adjusting that wherein feeds water is specially variable-frequency governor.
Adjusting control action through variable-frequency governor; Can realize according to actual needs water supply system is carried out real-time regulated; Thereby when needs supply water in a large number, can to boiler more water be provided through controlling the feedwater control set for adjusting, and when not needing to supply water in a large number; For boiler provides less water, and then reduce the water supply system failure-frequency.
In the present embodiment; Also the valve mechanism to main road control valve and bypass valve improves; The spool and the valve rod junction of main road control valve and bypass valve are added solid welding calmly; To increase the steadiness that is connected between spool and the valve rod, in addition through increasing at spool through improving the joint ring of abrasion resistance and flexibility, the sealing of enhancing valve.More than improve the generation that all can effectively avoid feed-water valve bite, the black box damage of door core or faults such as fracture of valve spool alignment pin and valve rod fracture.
The above embodiment has only expressed the embodiment of the utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to the protection domain of the utility model.Therefore, the protection domain of the utility model patent should be as the criterion with accompanying claims.
Claims (2)
1. scalable water supply system based on constant speed pump; Comprise constant speed pump (1) and be connected in constant speed pump and the boiler feed water mouth between feedwater piping (2); It is characterized in that: the delivery port of said constant speed pump (1) is provided with main road control valve (11) and bypass valve (12), and constant speed pump is connected with the feedwater control set for adjusting (13) that is used to regulate main road control valve and bypass valve aperture ratio.
2. the scalable water supply system based on constant speed pump according to claim 1 is characterized in that: said feedwater control set for adjusting (13) is specially fluid coupling or variable-frequency governor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205407853U CN202380520U (en) | 2011-12-22 | 2011-12-22 | Adjustable water supply system based on constant-speed pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205407853U CN202380520U (en) | 2011-12-22 | 2011-12-22 | Adjustable water supply system based on constant-speed pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202380520U true CN202380520U (en) | 2012-08-15 |
Family
ID=46629032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205407853U Expired - Fee Related CN202380520U (en) | 2011-12-22 | 2011-12-22 | Adjustable water supply system based on constant-speed pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202380520U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106801863A (en) * | 2017-02-06 | 2017-06-06 | 国家电网公司 | A kind of fired power generating unit feed water by-pass cuts the bypass valve control method during main road |
-
2011
- 2011-12-22 CN CN2011205407853U patent/CN202380520U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106801863A (en) * | 2017-02-06 | 2017-06-06 | 国家电网公司 | A kind of fired power generating unit feed water by-pass cuts the bypass valve control method during main road |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20131222 |