CN204629093U - A kind of steam Small Flow Control System - Google Patents
A kind of steam Small Flow Control System Download PDFInfo
- Publication number
- CN204629093U CN204629093U CN201520292271.9U CN201520292271U CN204629093U CN 204629093 U CN204629093 U CN 204629093U CN 201520292271 U CN201520292271 U CN 201520292271U CN 204629093 U CN204629093 U CN 204629093U
- Authority
- CN
- China
- Prior art keywords
- steam
- valve
- flow control
- small flow
- temperature reducing
- 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
Links
- 230000006837 decompression Effects 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 4
- 238000004378 air conditioning Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Control Of Turbines (AREA)
Abstract
The utility model relates to a kind of steam Small Flow Control System, comprise steam admission supervisor, main steam header after decompression, connecting tube is provided with between steam admission supervisor and the rear main steam header of decompression, the pressure and temperature reducing control unit be connected in parallel with connecting tube and Small Flow Control unit, DN150 gate valve, DN125 safety valve and DN150 gate valve that Small Flow Control unit comprises pipeline and sets gradually on pipeline, controlling steam throughput is 3 ~ 10t/h.Compared with prior art, the utility model control valve for small flows instead of large discharge pressure and temperature reducing integral valve and runs, and little steam consumption and control valve for small flows are adapted, and reduces the generation of cavitation, extends the working life of pressure and temperature reducing integral valve.
Description
Technical field
The utility model relates to a kind of flow control system, especially relates to a kind of steam Small Flow Control System.
Background technique
The steam admission supervisor of existing energy centre is generally be installed in parallel two cover pressure and temperature reducing integral valves (the using and the reserved), in order to control the size of steam flow, makes the steam in the main steam header after pressure and temperature reducing meet usage requirement.Company's steam consumption in winter is about 25 ~ 35t/h, and when other season is without air-conditioning heating, steam consumption is about 3 ~ 10t/h.And the pressure and temperature reducing integral valve design discharge 60t/h used now, during other season is without air-conditioning, the aperture of pressure and temperature reducing integral valve is 3% ~ 15%, and be in low open position for a long time, can produce cavitation like this, damage spool, this pressure and temperature reducing integral valve is external imported product, price is high, and maintenance is inconvenient.
Model utility content
The purpose of this utility model is exactly provide a kind of spool not easily to produce Cavitation to overcome defect that above-mentioned prior art exists, thus the steam Small Flow Control System that the import pressure and temperature reducing integral valve spool delaying large discharge damages because of cavitation.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of steam Small Flow Control System, comprises
Steam admission is responsible for,
Main steam header after decompression,
Connecting tube is provided with between steam admission supervisor and the rear main steam header of decompression,
The pressure and temperature reducing control unit be connected in parallel with connecting tube,
Small Flow Control unit is also connected with between described steam admission supervisor and the rear main steam header of decompression, DN150 gate valve, DN125 safety valve and DN150 gate valve that this control unit comprises pipeline and sets gradually on pipeline, controlling steam throughput is 3 ~ 10t/h.
Also filter is connected with on the DN150 gate valve of steam admission supervisor.
Described DN125 safety valve is provided with two.
Described Small Flow Control unit and connecting tube are connected in parallel.
Described pressure and temperature reducing control unit is provided with two groups.
DN400 gate valve, pressure and temperature reducing integral valve, pressure gauge, DN300 safety valve and DN400 gate valve that described pressure and temperature reducing control unit comprises pipeline and sets gradually on pipeline.
Described pressure and temperature reducing integral valve is connected with desuperheating spraying water valve group.
Described pressure and temperature reducing integral valve is also connected with DN300 safety valve through pipeline.
Described DN400 gate valve is also connected with filter.
After increasing Small Flow Control unit, without air-conditioning heating period in the winter time, original large discharge pressure and temperature reducing integral valve group of stopping using, enables Small Flow Control unit.The steam consumption in this period is at 3 ~ 10t/h, and substantially adapt with the specified inflow-rate of water turbine of control valve for small flows, the aperture of control valve for small flows is between 30% ~ 100%, and spool not easily produces Cavitation.Thus the time that the import pressure and temperature reducing integral valve spool delaying large discharge damages because of cavitation.
Compared with prior art, the utility model has the following advantages:
1, instead of large discharge pressure and temperature reducing integral valve with control valve for small flows to run, little steam consumption and control valve for small flows are adapted, reduce the generation of cavitation.
2, extend the working life of high price large discharge pressure and temperature reducing integral valve, reduce maintenance cost and engineering time.
3, time of remaining intact of spool is long, improves steam supply reliability.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, 1 be steam admission supervisor, 2 be DN400 gate valve, 3 be filter, 4 be pressure and temperature reducing integral valve, 5 be pressure gauge, 6 be DN300 safety valve, 7 be DN400 gate valve, 8 be desuperheating spraying water valve group, 9 be main steam header bypass valve, 10 be the 2nd DN150 gate valve for main steam header, 11 after decompression is a DN150 gate valve, 12 for filter, 13 be a DN125 modulating valve, 14 is the 2nd DN125 safety valve, 15.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Embodiment
A kind of steam Small Flow Control System, its structure as shown in Figure 1, comprises steam admission supervisor 1, main steam header 10 after decompression, is provided with connecting tube, connecting tube is provided with main steam header bypass valve 9 after 1 and decompression are responsible in steam admission between main steam header 10.Two groups of pressure and temperature reducing control units are connected in parallel to connecting tube, and one group of Small Flow Control unit.
A DN150 gate valve 11, a DN125 safety valve 13, the 2nd DN125 safety valve 14 and the 2nd DN150 gate valve 15 that Small Flow Control unit comprises pipeline and sets gradually on pipeline, controlling steam throughput is 3 ~ 10t/h.A DN150 gate valve 11 near steam admission supervisor is also connected with filter 12.
DN400 gate valve 2, pressure and temperature reducing integral valve 4, pressure gauge 5, DN300 safety valve 6 and DN400 gate valve 7 that pressure and temperature reducing control unit comprises pipeline and sets gradually on pipeline.Pressure and temperature reducing integral valve 4 is connected with desuperheating spraying water valve group 8, pressure and temperature reducing integral valve 4 is also connected with DN300 safety valve 6 through pipeline in addition, and DN400 gate valve 2 is also connected with filter 3.
The utility model is by after increase Small Flow Control unit, and without air-conditioning heating period in the winter time, original large discharge pressure and temperature reducing integral valve group of stopping using, enables Small Flow Control unit.The steam consumption in this period is at 3 ~ 10t/h, and substantially adapt with the specified inflow-rate of water turbine of control valve for small flows, the aperture of control valve for small flows is between 30% ~ 100%, and spool not easily produces Cavitation.Thus the time that the import pressure and temperature reducing integral valve spool delaying large discharge damages because of cavitation.
Claims (9)
1. a steam Small Flow Control System, comprises
Steam admission is responsible for,
Main steam header after decompression,
Connecting tube is provided with between steam admission supervisor and the rear main steam header of decompression,
The pressure and temperature reducing control unit be connected in parallel with connecting tube,
It is characterized in that, Small Flow Control unit is also connected with between described steam admission supervisor and the rear main steam header of decompression, DN150 gate valve, DN125 safety valve and DN150 gate valve that this control unit comprises pipeline and sets gradually on pipeline, controlling steam throughput is 3 ~ 10t/h.
2. a kind of steam Small Flow Control System according to claim 1, is characterized in that, on the DN150 gate valve of steam admission supervisor, be also connected with filter.
3. a kind of steam Small Flow Control System according to claim 1, is characterized in that, described DN125 safety valve is provided with two.
4. a kind of steam Small Flow Control System according to claim 1, is characterized in that, described Small Flow Control unit and connecting tube are connected in parallel.
5. a kind of steam Small Flow Control System according to claim 1, is characterized in that, described pressure and temperature reducing control unit is provided with two groups.
6. a kind of steam Small Flow Control System according to claim 1 or 5, it is characterized in that, DN400 gate valve, pressure and temperature reducing integral valve, pressure gauge, DN300 safety valve and DN400 gate valve that described pressure and temperature reducing control unit comprises pipeline and sets gradually on pipeline.
7. a kind of steam Small Flow Control System according to claim 6, is characterized in that, described pressure and temperature reducing integral valve is connected with desuperheating spraying water valve group.
8. a kind of steam Small Flow Control System according to claim 6, is characterized in that, described pressure and temperature reducing integral valve is also connected with DN300 safety valve through pipeline.
9. a kind of steam Small Flow Control System according to claim 6, is characterized in that, described DN400 gate valve is also connected with filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520292271.9U CN204629093U (en) | 2015-05-07 | 2015-05-07 | A kind of steam Small Flow Control System |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520292271.9U CN204629093U (en) | 2015-05-07 | 2015-05-07 | A kind of steam Small Flow Control System |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204629093U true CN204629093U (en) | 2015-09-09 |
Family
ID=54048121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520292271.9U Expired - Fee Related CN204629093U (en) | 2015-05-07 | 2015-05-07 | A kind of steam Small Flow Control System |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204629093U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791606A (en) * | 2015-05-07 | 2015-07-22 | 仪征祥源动力供应有限公司 | Small-flow steam control system |
| CN111911807A (en) * | 2020-08-25 | 2020-11-10 | 深圳市德达康健股份有限公司 | Small-sized oxygen generator and flow control device and method thereof |
-
2015
- 2015-05-07 CN CN201520292271.9U patent/CN204629093U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791606A (en) * | 2015-05-07 | 2015-07-22 | 仪征祥源动力供应有限公司 | Small-flow steam control system |
| CN111911807A (en) * | 2020-08-25 | 2020-11-10 | 深圳市德达康健股份有限公司 | Small-sized oxygen generator and flow control device and method thereof |
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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: 20150909 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |