CN208312510U - Cold section of heating system of steam turbine reheating - Google Patents
Cold section of heating system of steam turbine reheating Download PDFInfo
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- CN208312510U CN208312510U CN201820432976.XU CN201820432976U CN208312510U CN 208312510 U CN208312510 U CN 208312510U CN 201820432976 U CN201820432976 U CN 201820432976U CN 208312510 U CN208312510 U CN 208312510U
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Abstract
The utility model discloses a kind of cold section of heating systems of steam turbine reheating, it include: Steam Turbine, Steam Turbine includes boiler and high pressure cylinder, and the steam drain of boiler is connected to the air intake of high pressure cylinder through main steam pipe, and the steam drain of high pressure cylinder connects reheated cold section and is connected to boiler；Heat supply pipeline is connected to heat user from cold section of reheating, is disposed with motor-driven valve, extraction check valve, steam extraction fast valve, decompressor, safety valve and flow measurement device on heat supply pipeline from the front to the back；First unrestrained water system, including the hydrophobic point being set on heat supply pipeline, the drain valve for being connected to the hydrophobic pipeline of hydrophobic point and being set on hydrophobic pipeline；Temperature-detecting device is set on heat supply pipeline and is located at before or after hydrophobic point, for detecting corresponding position temperature in heat supply pipeline；Scattered control system is connect with drain valve and temperature-detecting device respectively, for according to temperature-detecting device temperature value control drain valve opening and closing detected.
Description
Technical field
The utility model relates to steam heating technical fields, particularly, are related to a kind of cold section of heating system of steam turbine reheating.
Background technique
It is advocated in national " energy saving medium-term and long-term plans " using efficient, clean electric power generation technology, transformation is implemented greatly for small, upper big
Press small, superseded, retired small unit and dispersion arcola, Cogeneration.By to environment-friendly type, large capacity, high parameter it is pure
Solidifying unit, which is transformed, realizes that cogeneration of heat and power central heating is present and the development trend of a very long time in future.
Utility model content
The purpose of this utility model is to provide a kind of cold section of heating systems of steam turbine reheating.
The technical solution adopted in the utility model is as follows:
A kind of cold section of heating system of steam turbine reheating, comprising: Steam Turbine, Steam Turbine include boiler and high pressure cylinder, pot
The steam drain of furnace is connected to the air intake of high pressure cylinder through main steam pipe, and the steam drain of high pressure cylinder connects reheated cold section and is connected to pot
Furnace；Heat supply pipeline is connected to heat user from cold section of reheating, is disposed with motor-driven valve from the front to the back on heat supply pipeline, steam extraction stops
Return valve, steam extraction fast valve, decompressor, safety valve and flow measurement device；First unrestrained water system, including it is set to heat supply pipeline
On hydrophobic point, the drain valve that is connected to the hydrophobic pipeline of hydrophobic point and is set on hydrophobic pipeline；Temperature-detecting device, setting
In on heat supply pipeline and be located at hydrophobic point before or after, for detecting corresponding position temperature in heat supply pipeline；Scattered control system, point
It is not connect with drain valve and temperature-detecting device, for being opened according to temperature-detecting device temperature value control drain valve detected
It closes.
Further, it is respectively equipped with the first unrestrained water system after motor-driven valve, extraction check valve, steam extraction fast valve, and
Temperature-detecting device is equipped with after each hydrophobic point.
Preferably, temperature-detecting device includes the tube top temperature sensor for being set to tube top in heat supply pipeline, is set to confession
The tube bottom temperature sensor of tube bottom in heat pipeline；Scattered control system and tube top temperature sensor and tube bottom temperature sensor connect
It connects, and the opening and closing for controlling drain valve according to the temperature gap of the two.
Preferably, drain valve is electronic drain valve.
Further, the first pressure transmitter for adjusting pressure, first pressure pick-up are provided with after decompressor
Device is connect with scattered control system.
Further, the pressure gauge for showing pressure and/or the temperature for displays temperature are provided with after decompressor
Degree meter.
Preferably, flow measurement device includes flowmeter, the differential pressure transmitter being configured on flowmeter and is respectively set
In the forward and backward second pressure transmitter of flowmeter, temperature sensor, differential pressure transmitter, second pressure transmitter and temperature sensing
Device is connect with scattered control system respectively.
Further, scattered control system also respectively with motor-driven valve, extraction check valve, steam extraction fast valve, decompressor and
Flow measurement device connection.
Optionally, the second unrestrained water system, the second unrestrained water system are additionally provided with after flow measurement device, before heat user
Including the automatic steam trap for being connected to the hydrophobic pipeline of heat supply pipeline and being set on hydrophobic pipeline.
Further, Steam Turbine is the Steam Turbine of 600MW.
Cold section of heating system of steam turbine reheating of the utility model, to the cold section of progress heat supply transformation of steam turbine reheating, slave
Group cold section of steam main pipe steam extraction of reheating, steam flow to heat user by heat supply pipeline, and successively by electronic on steam pipework
The monitoring of valve, extraction check valve, steam extraction fast valve, decompressor, safety valve and flow measurement device, so that rate of discharge, pressure
Power reaches heating demand；Safety valve after decompressor can protect the safe operation of heat supply pipeline；And it utilizes and decentralised control system
First unrestrained water system of system connection, temperature-detecting device, by decentralised control according to temperature-detecting device temperature detected
Opening and closing automatically automatically for drain valve is realized in the opening and closing of value control drain valve.In short, cold section of the steam turbine reheating of the utility model
Heating system, it is more safe and reliable and economical.
Other than objects, features and advantages described above, there are also other purposes, feature and excellent for the utility model
Point.Below with reference to accompanying drawings, the utility model is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide a further understanding of the present invention, the utility model
Illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.In attached drawing
In:
Fig. 1 is the schematic diagram of the steam turbine cold section of heating system of function reheating of the preferred embodiment in the utility model.
Description of symbols:
1, Steam Turbine；10, boiler；11, intermediate pressure cylinder；12, high pressure cylinder；13, main steam pipe；14, cold section of reheating；
2, heat supply pipeline；20, motor-driven valve；21, extraction check valve；22, steam extraction fast valve；23, decompressor；230, first
Pressure transmitter；24, safety valve；25, flow measurement device；250, flowmeter；251, differential pressure transmitter；252, second pressure becomes
Send device；253, temperature sensor；26, the first unrestrained water system；260, drain valve；27, temperature-detecting device；270, tube top temperature
Sensor；271, tube bottom temperature sensor；28, pressure gauge；29, thermometer；
3, heat user；4, the second unrestrained water system；40, automatic steam trap.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
Referring to Fig.1, the preferred embodiment of the utility model passes through to cold section of steam turbine reheating of large-size thermal power plant 600MW
14 carry out heat supply transformation, provide a kind of cold section of heating system of steam turbine reheating.
Cold section of heating system of steam turbine reheating of the utility model includes: Steam Turbine 1, Steam Turbine 1 include boiler 10,
Intermediate pressure cylinder 11 and high pressure cylinder 12, the steam drain of boiler 10 are connected to the air intake of high pressure cylinder 12, high pressure cylinder 12 through main steam pipe 13
Steam drain connect reheated cold section 14 be connected to boiler 10；Heat supply pipeline 2 is connected to heat user 3, heat supply from cold section 14 of reheating
On pipeline 2 according to steam outflow direction be disposed with from the front to the back motor-driven valve 20, extraction check valve 21, steam extraction fast valve 22,
Decompressor 23, safety valve 24 and flow measurement device 25；First unrestrained water system 26, including being set to dredging on heat supply pipeline 2
Water spot, the hydrophobic pipeline for being connected to hydrophobic point and the drain valve being set on hydrophobic pipeline 260；Temperature-detecting device 27, setting
In on heat supply pipeline 2 and be located at hydrophobic point before or after, for detecting corresponding position temperature in heat supply pipeline 2；Scattered control system
(DCS), it is connect respectively with drain valve 260 and temperature-detecting device 27, for according to the temperature detected of temperature-detecting device 27
Value control drain valve 260 is opened and closed.
Cold section of heating system of steam turbine reheating of the utility model, to the cold section 14 progress heat supply transformation of steam turbine reheating, from
The cold section of 14 steam main pipe steam extractions of unit reheating, steam flow to heat user 3 by heat supply pipeline 2, and successively by steam pipework
Motor-driven valve 20, extraction check valve 21, steam extraction fast valve 22 make by the monitoring of decompressor 23 and flow measurement device 25
Obtain rate of discharge, pressure reaches heating demand；Safety valve 24 after decompressor 23 can protect the safe operation of heat supply pipeline 2；
Using the connect with scattered control system first unrestrained water system 26, temperature-detecting device 27, by decentralised control according to temperature
The temperature value detected of detection device 27 controls the opening and closing of drain valve 260, realizes opening and closing automatically automatically for drain valve 260.This
Cold section of heating system of steam turbine reheating of utility model, it is more safe and reliable and economical.
Further, the first unrestrained water system is respectively equipped with after motor-driven valve 20, extraction check valve 21, steam extraction fast valve 22
System 26, and temperature-detecting device 27 is equipped with after each hydrophobic point.Temperature-detecting device 27 includes being set in heat supply pipeline 2
The tube top temperature sensor 270 of tube top, the tube bottom temperature sensor 271 for being set to tube bottom in heat supply pipeline 2.Scattered control system
It is connect with tube top temperature sensor 270 and tube bottom temperature sensor 271, and for controlling drain valve according to the temperature gap of the two
260 opening and closing.Preferably, the drain valve 260 in the first unrestrained water system 26 is electronic drain valve.Optionally, tube top temperature passes
Double branch thermocouples are respectively adopted in sensor 270 and tube bottom temperature sensor 271.
In this preferred embodiment, setting is provided with one by all means after each hydrophobic point there are three hydrophobic point altogether on heat supply pipeline 2
Push up temperature sensor 270 and a bottom temperature sensor 271 by all means.Tube top temperature sensor 270 is for detecting 2 inner tube of heat supply pipeline
The temperature of corresponding position is pushed up, tube bottom temperature sensor 271 is used to detect the temperature of tube bottom corresponding position in heat supply pipeline 2.Specifically
Ground, when tube top tube bottom temperature difference is greater than definite value or when each tube top temperature sensor 270 and each tube bottom temperature sensor 271
In any temperature detected when being lower than definite value, scattered control system control drain valve 260 automatically opens.When tube top tube bottom temperature
When degree difference is less than definite value and when the temperature detected in each tube top temperature sensor 270 and each tube bottom temperature sensor 271 is equal
When greater than definite value, scattered control system control drain valve 260 is automatically closed.The utility model can be realized automatic switch heating tube
The valve of each corresponding position on road 2 reliably discharges 2 internal drainage of heat supply pipeline, is advantageously implemented heat supply safe operation, with
Meet user's requirement.
Further, the first pressure transmitter 230 for adjusting pressure, first pressure are provided with after decompressor 23
Transmitter 230 is connect with scattered control system.Scattered control system controls first pressure transmitter 230 and carries out the pressure of decompressor 23
Power is adjusted.
Further, it is provided with the pressure gauge 28 for showing pressure after decompressor 23 and/or is used for displays temperature
Thermometer 29.In the present embodiment, thermometer 29 is bimetallic thermometer.Pressure gauge 28, thermometer 29 are respectively used to pressure, temperature
Degree shows that structure is simple, is conducive to the safe and reliable economy of entire heating system on the spot.
Preferably, flow measurement device 25 include flowmeter 250, be configured on flowmeter 250 differential pressure transmitter 251,
And it is respectively arranged at the forward and backward second pressure transmitter 252 of flowmeter 250, temperature sensor 253, differential pressure transmitter 251,
Second pressure transmitter 252 and temperature sensor 253 are connect with scattered control system respectively.Flow measurement is arranged in the utility model
Device 25 configures differential pressure transmitter 251 using the flowmeter 250 of standard orifice plate, and is respectively set before and after flowmeter 250 the
Two pressure transmitters 252 and temperature sensor 253, and these elements are connect with scattered control system respectively, pass through these elements
Cooperate the measurement to realize steam flow in heat supply pipeline 2.Structure is simple, automatic measurement can be achieved.Optionally, temperature sensing
Device 253 is using double branch thermocouples.
Further, scattered control system also respectively with motor-driven valve 20, extraction check valve 21, steam extraction fast valve 22, decompression
Device 23 and flow measurement device 25 connect.Each valve, decompressor 23 and flow measurement are controlled by scattered control system
The switch of device 25 and work, more securely and reliably.Extraction check valve 21 and steam extraction fast valve 22 pass through scattered control system control
System guarantees that Steam Turbine 1 is safely operated, and prevents the refluence of 2 steam of heat supply pipeline from causing Steam Turbine Over-speed Accident accident.Certainly, work as heat supply
When adjusting permission, related heating equipment extraction check valve 21, steam extraction fast valve 22 can be grasped manually by allowing to adjust by operations staff
It puts into operation.
Optionally, the second unrestrained water system 4, the second unrestrained water are additionally provided with after flow measurement device 25, before heat user 3
System 4 includes the automatic steam trap 40 for being connected to the hydrophobic pipeline of heat supply pipeline 2 and being set on hydrophobic pipeline.It is dredged using second
Drainage system 4 carries out hydrophobic reliable discharge to the position, and structure is relatively easy and more economical.
Optionally, it is additionally provided with pipeline deflation point after flow measurement device 25, before the second unrestrained water system 4, guarantees to supply
Hot systems it is safe and reliable.
The utility model controls each valve on heat supply pipeline 2 using scattered control system, realizes to heating tube
The control and adjusting of steam flow, pressure, make the flow of 1 heating steam of Steam Turbine, pressure meet the requirement of user in road 2,
It is comparatively safe reliable and economical.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of cold section of heating system of steam turbine reheating characterized by comprising
Steam Turbine (1), the Steam Turbine (1) include boiler (10) and high pressure cylinder (12), the steam drain of the boiler (10)
The air intake of the high pressure cylinder (12) is connected to through main steam pipe (13), the steam drain connection of the high pressure cylinder (12) is reheated cold
Section (14) is connected to the boiler (10)；
Heat supply pipeline (2) is connected to heat user (3) from cold section of the reheating (14), on the heat supply pipeline (2) from the front to the back between
Every be provided with motor-driven valve (20), extraction check valve (21), steam extraction fast valve (22), decompressor (23), safety valve (24) and stream
Measuring device (25)；
First unrestrained water system (26), including be set to the heat supply pipeline (2) on hydrophobic point, be connected to the hydrophobic point dredge
Water lines and the drain valve being set on hydrophobic pipeline (260)；
Temperature-detecting device (27) is set on the heat supply pipeline (2) and is located at before or after the hydrophobic point, for detecting
State the interior corresponding position temperature of heat supply pipeline (2)；
Scattered control system is connect with the drain valve (260) and the temperature-detecting device (27) respectively, for according to
Temperature-detecting device (27) temperature value detected controls drain valve (260) opening and closing.
2. cold section of heating system of steam turbine reheating according to claim 1, which is characterized in that
In the motor-driven valve (20), the extraction check valve (21), described the is respectively equipped with after the steam extraction fast valve (22)
One unrestrained water system (26), and the temperature-detecting device (27) are equipped with after each hydrophobic point.
3. cold section of heating system of steam turbine reheating according to claim 1, which is characterized in that
The temperature-detecting device (27) include be set to the heat supply pipeline (2) interior tube top tube top temperature sensor (270),
It is set to the tube bottom temperature sensor (271) of the heat supply pipeline (2) interior tube bottom；
The scattered control system is connect with the tube top temperature sensor (270) and the tube bottom temperature sensor (271), and
For controlling the opening and closing of the drain valve (260) according to the temperature gap of the two.
4. cold section of heating system of steam turbine reheating according to claim 1, which is characterized in that
The drain valve (260) is electronic drain valve.
5. cold section of heating system of steam turbine reheating according to claim 1, which is characterized in that
The first pressure transmitter (230) for adjusting pressure, the first pressure are provided with after the decompressor (23)
Transmitter (230) is connect with the scattered control system.
6. cold section of heating system of steam turbine reheating according to claim 1, which is characterized in that
Pressure gauge (28) for showing pressure is provided with after the decompressor (23) and/or for the temperature of displays temperature
It counts (29).
7. cold section of heating system of steam turbine reheating according to claim 1, which is characterized in that
The differential pressure transmitter that the flow measurement device (25) includes flowmeter (250), is configured on the flowmeter (250)
(251) the forward and backward second pressure transmitter (252) of the flowmeter (250), temperature sensor are respectively arranged at and
(253), the differential pressure transmitter (251), the second pressure transmitter (252) and the temperature sensor (253) respectively with
The scattered control system connection.
8. cold section of heating system of steam turbine reheating according to claim 1, which is characterized in that
The scattered control system also respectively with the motor-driven valve (20), the extraction check valve (21), the steam extraction fast valve
(22), the decompressor (23) and the flow measurement device (25) connection.
9. cold section of heating system of steam turbine reheating according to claim 1, which is characterized in that
It is additionally provided with the second unrestrained water system (4) afterwards, before the heat user (3) in the flow measurement device (25), described the
Two unrestrained water systems (4) include the automatic sparse for being connected to the hydrophobic pipeline of the heat supply pipeline (2) and being set on hydrophobic pipeline
Water valve (40).
10. cold section of heating system of steam turbine reheating according to claim 1, which is characterized in that
The Steam Turbine (1) is the Steam Turbine of 600MW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820432976.XU CN208312510U (en) | 2018-03-28 | 2018-03-28 | Cold section of heating system of steam turbine reheating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820432976.XU CN208312510U (en) | 2018-03-28 | 2018-03-28 | Cold section of heating system of steam turbine reheating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208312510U true CN208312510U (en) | 2019-01-01 |
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ID=64720306
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820432976.XU Active CN208312510U (en) | 2018-03-28 | 2018-03-28 | Cold section of heating system of steam turbine reheating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826680A (en) * | 2019-03-19 | 2019-05-31 | 中国能源建设集团华北电力试验研究院有限公司 | A kind of steam distribution system and application method based on piping-main scheme different parameters grade unit |
-
2018
- 2018-03-28 CN CN201820432976.XU patent/CN208312510U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826680A (en) * | 2019-03-19 | 2019-05-31 | 中国能源建设集团华北电力试验研究院有限公司 | A kind of steam distribution system and application method based on piping-main scheme different parameters grade unit |
| CN109826680B (en) * | 2019-03-19 | 2023-08-08 | 中国能源建设集团华北电力试验研究院有限公司 | Steam distribution system based on mother pipe control of different parameter grade units and application method |
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