CN204629093U - A kind of steam Small Flow Control System - Google Patents

A kind of steam Small Flow Control System Download PDF

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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
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China
Prior art keywords
steam
valve
flow control
small flow
temperature reducing
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Active
Application number
CN201520292271.9U
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Chinese (zh)
Inventor
唐健
蒋永丰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yizheng Auspicious Driving Source Supply Co Ltd
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Yizheng Auspicious Driving Source Supply Co Ltd
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Priority to CN201520292271.9U priority Critical patent/CN204629093U/en
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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

A kind of steam Small Flow Control System
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.
CN201520292271.9U 2015-05-07 2015-05-07 A kind of steam Small Flow Control System Active CN204629093U (en)

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

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Family Applications (1)

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CN201520292271.9U Active CN204629093U (en) 2015-05-07 2015-05-07 A kind of steam Small Flow Control System

Country Status (1)

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CN (1) CN204629093U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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