CN208310858U - Turbine medium-low pressure communication pipe heating system - Google Patents
Turbine medium-low pressure communication pipe heating system Download PDFInfo
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- CN208310858U CN208310858U CN201820424340.0U CN201820424340U CN208310858U CN 208310858 U CN208310858 U CN 208310858U CN 201820424340 U CN201820424340 U CN 201820424340U CN 208310858 U CN208310858 U CN 208310858U
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Abstract
The utility model discloses a kind of turbine medium-low pressure communication pipe heating systems, comprising: Steam Turbine, Steam Turbine include intermediate pressure cylinder, low pressure (LP) cylinder, are connected between intermediate pressure cylinder and low pressure (LP) cylinder by mesolow cross over pipe；In being connected with extraction steam pipe on mesolow cross over pipe, extraction steam pipe is connected to heat user through heat supply pipeline, is arranged at intervals with safety valve, check-valves, fast valve, electric gate valve and flow measurement device from the front to the back on heat supply pipeline；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.The utility model is more safe and reliable and economical.
Description
Technical field
The utility model relates to steam heating technical fields, particularly, are related to a kind of turbine medium-low pressure communication pipe heat supply
System.
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Press small, superseded, retired small unit and dispersion arcola, Cogeneration.By to environment-friendly type, large capacity, high parameter it is pure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.State at present
The extraction lines at different levels of steam-turbine unit in Nei Ge power plant are limited by set structure can only generally meet regenerative steam, and nothing
Method is provided out a large amount of steam as industry and heat supply vapour as gas source, so that a large amount of steam are in vain in pure condensate steam-turbine unit
Waste, causes the waste of resource.
Utility model content
The utility model provides a kind of mesolow cross over pipe heating system, can not be mentioned outward with solving existing Steam Turbine
The technical issues of resulting in waste of resources for a large amount of steam.
The technical solution adopted in the utility model is as follows:
A kind of turbine medium-low pressure communication pipe heating system, comprising: Steam Turbine, Steam Turbine include intermediate pressure cylinder, low pressure
Cylinder is connected between intermediate pressure cylinder and low pressure (LP) cylinder by mesolow cross over pipe；In being connected with extraction steam pipe, extraction steam pipe on mesolow cross over pipe
It is connected to heat user through heat supply pipeline, is arranged at intervals with safety valve, check-valves, fast valve, electronic on heat supply pipeline from the front to the back
Gate valve and flow measurement device；Unrestrained water system, including be set on heat supply pipeline hydrophobic point, be connected to the drain pipe of hydrophobic point
Road and the drain valve 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, is used
According to temperature-detecting device temperature value control drain valve opening and closing detected.
Further, it is respectively equipped with unrestrained water system after safety valve, check-valves, fast valve, electric gate valve, and in every
It is equipped with temperature-detecting device before one hydrophobic point, each hydrophobic pipeline is connected to hydrophobic collector.
Further, temperature-detecting device includes the tube top temperature sensor for being set to tube top in heat supply pipeline, is set to
The tube bottom temperature sensor of tube bottom in heat supply 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.
Further, it is provided with pressure-regulating valve on mesolow cross over pipe, first pressure is provided with before pressure-regulating valve
Transmitter is provided with second pressure transmitter, pressure-regulating valve, first pressure transmitter, second pressure after pressure-regulating valve
Transmitter is connect with scattered control system respectively.
Further, the first temperature sensor connecting with scattered control system is provided with before pressure-regulating valve.
Further, the pressure switch connecting with scattered control system is provided with before pressure-regulating valve.
Further, pressure gauge for showing pressure is provided with before the flow measurement device and/or for showing temperature
The thermometer of degree.
Further, flow measurement device includes flowmeter, the first differential pressure transmitter, the Yi Jifen that are configured on flowmeter
The third pressure transmitter and second temperature sensor not being set to before and after flowmeter, the first differential pressure transmitter, third pressure become
Device and second temperature sensor is sent to connect respectively with scattered control system.
Further, scattered control system also connects with check-valves, fast valve, electric gate valve and flow measurement device respectively
It connects.
Further, it is provided between Steam Turbine third section steam extraction and the 4th section of steam extraction and is connect with scattered control system
The second differential pressure transmitter.
The utility model is by connecting extraction steam pipe, extraction steam pipe warp on the mesolow cross over pipe between intermediate pressure cylinder and low pressure (LP) cylinder
Heat supply pipeline is connected to heat user, and a large amount of steam in such Steam Turbine are extracted out by extraction steam pipe, and the steam of extraction can be used for
Industrial production or area heating, so that a large amount of steam are utilized effectively in steam turbine, reduce resource waste；The structure only needs
Mesolow cross over pipe, which is transformed, can be realized, and structure is simple, at low cost；From mesolow cross over pipe steam extraction, steam is by supplying
Heat pipeline flow to heat user, and successively passes through check-valves, fast valve, electric gate valve and flow measurement device on steam pipework,
So that rate of discharge, pressure reach heating demand；Safety valve can protect the safe operation of heat supply pipeline；Using with decentralised control system
The unrestrained water system of system connection, temperature-detecting device, by decentralised control according to temperature-detecting device temperature value control detected
Opening and closing automatically automatically for drain valve is realized in the opening and closing of drain valve processed.In short, the turbine medium-low pressure communication pipe 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 showing for the first half of the steam turbine function mesolow cross over pipe heating system of the preferred embodiment in the utility model
It is intended to；
The latter half of the steam turbine function mesolow cross over pipe heating system of the preferred embodiment in the utility model of Fig. 2 shows
It is intended to.
Description of symbols:
1, Steam Turbine；10, intermediate pressure cylinder；11, low pressure (LP) cylinder；12, mesolow cross over pipe；13, pressure-regulating valve；14, first
Pressure transmitter；15, second pressure transmitter；16, the first temperature sensor；17, pressure switch；
2, extraction steam pipe；
3, heat supply pipeline；30, safety valve；31, check-valves；32, fast valve；33, electric gate valve；34, flow measurement device；
340, flowmeter；341, the first differential pressure transmitter；342, third pressure transmitter；343, second temperature sensor；35, unrestrained water
System；350, hydrophobic pipeline；351, drain valve；352, hydrophobic collector；36, temperature-detecting device；360, tube top temperature sensor；
361, tube bottom temperature sensor；37, pressure gauge；38, thermometer；
4, heat user.
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 Figures 1 and 2, the preferred embodiment of the utility model passes through in large-size thermal power plant 300MW steam turbine
Low pressure cross over pipe 12 carries out heat supply transformation, provides a kind of turbine medium-low pressure communication pipe heating system.
The turbine medium-low pressure communication pipe heating system of the utility model, comprising: Steam Turbine 1, during Steam Turbine 1 includes
Cylinder pressure 10, low pressure (LP) cylinder 11 are connected between intermediate pressure cylinder 10 and low pressure (LP) cylinder 11 by mesolow cross over pipe 12；In mesolow cross over pipe 12
On be connected with extraction steam pipe 2, extraction steam pipe 2 is connected to heat user 4 through heat supply pipeline 3, is arranged at intervals with from the front to the back on heat supply pipeline 3
Safety valve 30, check-valves 31, fast valve 32, electric gate valve 33 and flow measurement device 34；Unrestrained water system 35, including be set to and supply
Hydrophobic point on heat pipeline 3, the drain valve 351 for being connected to the hydrophobic pipeline 350 of hydrophobic point and being set on hydrophobic pipeline 350；
Temperature-detecting device 36 is set on heat supply pipeline 3 and is located at before or after hydrophobic point, for detecting corresponding positions in heat supply pipeline 3
Set temperature；Scattered control system (DCS), connect with drain valve 351 and temperature-detecting device 36 respectively, for according to temperature detection
The temperature value detected of device 36 controls drain valve 351 and is opened and closed.
The utility model is by connecting threeway steam extraction on the mesolow cross over pipe 12 between intermediate pressure cylinder 10 and low pressure (LP) cylinder 11
Pipe 2, extraction steam pipe 2 are connected to heat user 4 through heat supply pipeline 3, and a large amount of steam in such Steam Turbine 1 are extracted out by extraction steam pipe 2,
The steam of extraction can be used for industrial production or area heating, so that a large amount of steam are utilized effectively in Steam Turbine 1, reduce
The wasting of resources；Mesolow cross over pipe 12 need to only be transformed and can be realized by the structure, and structure is simple, at low cost；From mesolow
12 steam extraction of cross over pipe, steam flow to heat user 4 by heat supply pipeline 3, and successively by check-valves 31, the quick closing valve on steam pipework
Valve 32, electric gate valve 33 and flow measurement device 34, so that rate of discharge, pressure reach heating demand；Safety valve 30 can be protected
The safe operation of heat supply pipeline 3；Using connect with scattered control system unrestrained water system 35, temperature-detecting device 36, pass through
Decentralised control controls the opening and closing of drain valve 351 according to the temperature value detected of temperature-detecting device 36, realizes drain valve 351 oneself
It is dynamic to open and close automatically.The turbine medium-low pressure communication pipe heating system of the utility model, it is more safe and reliable and economical.
Further, unrestrained water system is respectively equipped with after safety valve 30, check-valves 31, fast valve 32, electric gate valve 33
System 35, and it is equipped with temperature-detecting device 36 before each hydrophobic point, each hydrophobic pipeline 350 is connected to hydrophobic collector 352.Into one
Step ground, temperature-detecting device 36 include the tube top temperature sensor 360 for being set to tube top in heat supply pipeline 3, are set to heating tube
The tube bottom temperature sensor 361 of tube bottom in road 3.Scattered control system and tube top temperature sensor 360 and tube bottom temperature sensor
361 connections, and the opening and closing for controlling drain valve 351 according to the temperature gap of the two.Preferably, dredging in unrestrained water system 35
Water valve 351 is electronic drain valve.Optionally, double branch heat are respectively adopted in tube top temperature sensor 360 and tube bottom temperature sensor 361
Galvanic couple.
In this preferred embodiment, setting is provided with one by all means before each hydrophobic point there are four hydrophobic point altogether on heat supply pipeline 3
Push up temperature sensor 360 and a bottom temperature sensor 361 by all means.Tube top temperature sensor 360 is for detecting 3 inner tube of heat supply pipeline
The temperature of corresponding position is pushed up, tube bottom temperature sensor 361 is used to detect the temperature of tube bottom corresponding position in heat supply pipeline 3.Specifically
Ground, when tube top tube bottom temperature difference is greater than definite value or when each tube top temperature sensor 360 and each tube bottom temperature sensor 361
In any temperature detected when being lower than definite value, scattered control system control drain valve 351 automatically opens.When tube top tube bottom temperature
Degree difference is less than power plant and wants to detect when required value and when in each tube top temperature sensor 360 and each tube bottom temperature sensor 361
Temperature when being all larger than definite value, scattered control system control drain valve 351 is automatically closed.The utility model can be realized to be opened automatically
The valve of each corresponding position on heat supply pipeline 3 is closed, and 3 internal drainage of heat supply pipeline is reliably discharged, is advantageously implemented heat supply
The regulation and control of steam flow, temperature, to meet user's requirement.
Further, pressure-regulating valve 13 is provided on mesolow cross over pipe 12, pressure-regulating valve 13 is for controlling steam extraction
The size of extracted out the steam pressure of pipe 2.First pressure transmitter 14 is provided with before pressure-regulating valve 13, in pressure-regulating valve 13
After be provided with second pressure transmitter 15, pressure-regulating valve 13, first pressure transmitter 14, second pressure transmitter 15 respectively with
Scattered control system connection, for carrying out steam pressure adjusting.In this preferred embodiment, three are provided with before pressure-regulating valve 13
A first pressure transmitter 14, two from three takes mean value, adjusts pressure of steam supply for pressure-regulating valve 13.After pressure-regulating valve 13
The second pressure transmitter 15 of setting is used for pressure monitoring.
Further, the first temperature sensor 16 connecting with scattered control system is provided with before pressure-regulating valve 13,
For temperature alarming.
Further, the pressure switch 17 connecting with scattered control system is provided with before pressure-regulating valve 13, for taking out
The protection of steam pressure height.In the present embodiment, there are three pressure switches 17 for setting before pressure-regulating valve 13, for carrying out pressure guarantor
Shield.
Further, pressure gauge 37 for showing pressure is provided with before the flow measurement device 34 and/or for showing
The thermometer 38 of temperature displaying function.In the present embodiment, thermometer 38 is bimetallic thermometer.Pressure gauge 37, thermometer 38 are respectively used to
Pressure, temperature show that structure is simple on the spot, are conducive to the safe and reliable economy of entire heating system.
Further, flow measurement device 34 includes flowmeter 340, the first differential pressure transporting being configured on flowmeter 340
Device 341 and the third pressure transmitter 342 and second temperature sensor 343 for being respectively arranged at 340 front and back of flowmeter, first
Differential pressure transmitter 341, third pressure transmitter 342 and second temperature sensor 343 are connect with scattered control system respectively, are used for
Calculating is compensated to steam flow.Flow measurement device 34 is arranged in the utility model, is matched using the flowmeter 340 of standard orifice plate
The first differential pressure transmitter 341 is set, and third pressure transmitter 342 and second temperature biography are respectively set before and after flowmeter 340
Sensor 343, and these elements are connect with scattered control system respectively, are cooperated by these elements and are steamed to realize in heat supply pipeline 3
The measurement of steam flow amount.Structure is simple, automatic measurement can be achieved.Optionally, second temperature sensor 343 is using double branch thermoelectricity
It is even.
Further, scattered control system is also filled with check-valves 31, fast valve 32, electric gate valve 33 and flow measurement respectively
Set 34 connections.Switch and the work that each valve and flow measurement device 34 are controlled by scattered control system, to heating system
Safe operation is protected, more securely and reliably.In this preferred embodiment, check-valves 31 is pneumatic check-valves.Fast valve 32 is
Surge fast valve.
Further, it is provided between 1 third section steam extraction of Steam Turbine and the 4th section of steam extraction and connects with scattered control system
The second differential pressure transmitter connect protects Turbine Safety operation.In this preferred embodiment, three take out (third between four pumpings
Between section steam extraction and the 4th section of steam extraction) there are three the second differential pressure transmitters for setting, and the extraction of guarantee differential pressure signal is more accurate reliable, and three
Differential pressure two from three between four pumpings is taken out, is protected for differential pressure height.
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 turbine medium-low pressure communication pipe heating system characterized by comprising
Steam Turbine (1), the Steam Turbine (1) include intermediate pressure cylinder (10), low pressure (LP) cylinder (11), medium pressure cylinder (10) with it is described
It is connected between low pressure (LP) cylinder (11) by mesolow cross over pipe (12)；
It is connected with extraction steam pipe (2) on the mesolow cross over pipe (12), the extraction steam pipe (2) is connected to through heat supply pipeline (3)
Heat user (4) is arranged at intervals with safety valve (30), check-valves (31), fast valve on the heat supply pipeline (3) from the front to the back
(32), electric gate valve (33) and flow measurement device (34)；
Unrestrained water system (35), including be set on the heat supply pipeline (3) hydrophobic point, be connected to the drain pipe of the hydrophobic point
Road (350) and the drain valve (351) being set on hydrophobic pipeline (350)；
Temperature-detecting device (36) is set on the heat supply pipeline (3) and is located at before or after the hydrophobic point, for detecting
State the interior corresponding position temperature of heat supply pipeline (3)；
Scattered control system is connect with the drain valve (351) and the temperature-detecting device (36) respectively, for according to
Temperature-detecting device (36) temperature value detected controls drain valve (351) opening and closing.
2. turbine medium-low pressure communication pipe heating system according to claim 1, which is characterized in that
The unrestrained water is respectively equipped with after the safety valve (30), check-valves (31), fast valve (32), electric gate valve (33)
System (35), and be equipped with the temperature-detecting device (36) before each hydrophobic point, each hydrophobic pipeline (350) is connected to
Hydrophobic collector (352).
3. turbine medium-low pressure communication pipe heating system according to claim 1, which is characterized in that
The temperature-detecting device (36) include be set to the heat supply pipeline (3) interior tube top tube top temperature sensor (360),
It is set to the tube bottom temperature sensor (361) of the heat supply pipeline (3) interior tube bottom；
The scattered control system is connect with the tube top temperature sensor (360) and the tube bottom temperature sensor (361), and
For controlling the opening and closing of the drain valve (351) according to the temperature gap of the two.
4. turbine medium-low pressure communication pipe heating system according to claim 1, which is characterized in that
Pressure-regulating valve (13) are provided on the mesolow cross over pipe (12), is provided with before the pressure-regulating valve (13)
One pressure transmitter (14) is provided with second pressure transmitter (15) after the pressure-regulating valve (13), and the pressure is adjusted
Valve (13), the first pressure transmitter (14), the second pressure transmitter (15) connect with the scattered control system respectively
It connects.
5. turbine medium-low pressure communication pipe heating system according to claim 4, which is characterized in that
The first temperature sensor (16) connecting with the scattered control system is provided with before the pressure-regulating valve (13).
6. turbine medium-low pressure communication pipe heating system according to claim 4, which is characterized in that
The pressure switch (17) connecting with the scattered control system is provided with before the pressure-regulating valve (13).
7. turbine medium-low pressure communication pipe heating system according to claim 1, which is characterized in that
It is provided with the pressure gauge (37) for showing pressure before the flow measurement device (34) and/or is used for displays temperature
Thermometer (38).
8. turbine medium-low pressure communication pipe heating system according to claim 1, which is characterized in that
The first differential pressure transporting that the flow measurement device (34) includes flowmeter (340), is configured on the flowmeter (340)
Device (341) and the third pressure transmitter (342) being respectively arranged at before and after the flowmeter (340) and second temperature sensing
Device (343), first differential pressure transmitter (341), the third pressure transmitter (342) and the second temperature sensor
(343) it is connect respectively with the scattered control system.
9. turbine medium-low pressure communication pipe heating system according to claim 1, which is characterized in that
The scattered control system also respectively with the check-valves (31), fast valve (32), electric gate valve (33) and the flow
Measuring device (34) connection.
10. turbine medium-low pressure communication pipe heating system according to claim 1, which is characterized in that
It is provided between the Steam Turbine (1) third section steam extraction and the 4th section of steam extraction and to be connect with the scattered control system
Second differential pressure transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820424340.0U CN208310858U (en) | 2018-03-28 | 2018-03-28 | Turbine medium-low pressure communication pipe heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820424340.0U CN208310858U (en) | 2018-03-28 | 2018-03-28 | Turbine medium-low pressure communication pipe heating system |
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| Publication Number | Publication Date |
|---|---|
| CN208310858U true CN208310858U (en) | 2019-01-01 |
Family
ID=64720254
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820424340.0U Active CN208310858U (en) | 2018-03-28 | 2018-03-28 | Turbine medium-low pressure communication pipe heating system |
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| Country | Link |
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| CN (1) | CN208310858U (en) |
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 |
| CN113007765A (en) * | 2021-02-26 | 2021-06-22 | 无锡新联热力有限公司 | Multi-heat-source mixed supply automatic regulating system for heating steam and scheduling method |
-
2018
- 2018-03-28 CN CN201820424340.0U patent/CN208310858U/en active Active
Cited By (4)
| 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 |
| CN113007765A (en) * | 2021-02-26 | 2021-06-22 | 无锡新联热力有限公司 | Multi-heat-source mixed supply automatic regulating system for heating steam and scheduling method |
| CN113007765B (en) * | 2021-02-26 | 2022-03-22 | 无锡新联热力有限公司 | Multi-heat-source mixed supply automatic regulating system for heating steam and scheduling method |
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