CN207673376U - It is a kind of to improve the solidifying system for taking out the back of the body for thermal safety of unit - Google Patents
It is a kind of to improve the solidifying system for taking out the back of the body for thermal safety of unit Download PDFInfo
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- CN207673376U CN207673376U CN201721603525.XU CN201721603525U CN207673376U CN 207673376 U CN207673376 U CN 207673376U CN 201721603525 U CN201721603525 U CN 201721603525U CN 207673376 U CN207673376 U CN 207673376U
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Abstract
The utility model is related to a kind of solidifying pumping back ofs the body of raising unit for the system of thermal safety, including Steam Turbine Through IP Admission, turbine low pressure cylinder, condenser, heat exchangers for district heating, No.1 temperature-decreased pressure reducer, No. two temperature-decreased pressure reducers.The utility model increases the safety of Steam Turbine heat supply using heating steam extraction bypass；When extraneous thermic load such as drastically reduces at the variations, it can be bypassed by heating steam extraction and extra steam is first passed through into pressure and temperature reducing, condenser be then passed to, to dissolve extra steam, to improve the safety of Steam Turbine heat supply.
Description
Technical field
The utility model belongs to cogeneration of heat and power technical field, is related to a kind of solidifying back of the body of taking out of raising unit and is for thermal safety
System.
Background technology
Hair changes the energy [2016] 617 " about printing and distributing《Cogeneration of heat and power management method》Notice " require：Strive realizing north
The large and medium-sized above city cogeneration of heat and power central heating rate in side reaches 60% or more, and county town cogenerations of heat and power more than 200,000 populations is covered entirely
Lid.This indicates that the development of cogeneration of heat and power will enter a fast-developing period.
For thermal power plant, the steam exhaust of steam turbine is typically to be fallen by air-cooled or water-cooling pattern direct emission, this
Huge cold end loss is resulted in.To improve the heat capacity of thermal power plant unit, expand heat supply market, solidifying back of the body heat supply process of taking out obtains
Quick development has been arrived, but has been directed to the technology, the steam discharge of Steam Turbine Through IP Admission does not enter back into turbine low pressure cylinder acting, but
All externally output heat supplies, at this time when extraneous thermal load demands drastically reduce, the extra steam discharge of Steam Turbine Through IP Admission will
It can not dissolve, at this moment will cause some potential safety problems to the safety of unit heat supply.
Utility model content
The purpose of the utility model is to overcome above-mentioned deficiencies existing in the prior art, and provide a kind of reasonable design,
Dependable performance improves the solidifying system for taking out the back of the body for thermal safety of unit.
Technical solution provided by the utility model is：A kind of raising unit is solidifying to take out the system carried on the back for thermal safety, feature
It is：Including Steam Turbine Through IP Admission, turbine low pressure cylinder, condenser, heat exchangers for district heating, No.1 temperature-decreased pressure reducer, No. two desuperheats
Pressure reducer；Mesolow communicating pipe is connected between Steam Turbine Through IP Admission and turbine low pressure cylinder, equipped with the on mesolow communicating pipe
One valve, turbine low pressure cylinder are connect with condenser；The both ends of first valve are parallel with cooling steam pipe, and the two of cooling steam pipe
End is connect with mesolow communicating pipe and turbine low pressure cylinder respectively, and cooling steam pipe upper edge steam flow direction is sequentially arranged with second
Valve, No.1 temperature-decreased pressure reducer and the first shut-off valve；Mesolow communicating pipe connection between Steam Turbine Through IP Admission and the first valve
There are heating extraction steam pipe, mesolow communicating pipe to be connect with heat exchangers for district heating by heating extraction steam pipe, the 4th is equipped on heating extraction steam pipe
Valve；It is connected with heating steam extraction bypass between heating extraction steam pipe and condenser between mesolow communicating pipe and the 4th valve, adopts
The direction of warm steam extraction bypass upper edge steam flowing is sequentially arranged with third valve, No. two temperature-decreased pressure reducers and the second shut-off valve；Heat supply network
The water inlet of heater is connected with heat supply network return pipe, and the 7th valve is housed on heat supply network return pipe；The water outlet of heat exchangers for district heating connects
It is connected to heat supply network feed pipe, the 5th valve is housed on heat supply network feed pipe.
The water side of heat exchangers for district heating described in the utility model is bypassed equipped with hot net water, and is equipped with the 6th in hot net water bypass
Valve.
The utility model compared with prior art, has the following advantages and effect：Vapour is increased using heating steam extraction bypass
Take turns the safety of unit heat supply；When extraneous thermic load such as drastically reduces at the variations, can be bypassed by heating steam extraction will be more
Remaining steam first passes through pressure and temperature reducing, then passes to condenser, to dissolve extra steam, to improve Steam Turbine heat supply
Safety.
Description of the drawings
Fig. 1 is the utility model embodiment planar structure schematic diagram.
In Fig. 1：1-- Steam Turbine Through IP Admissions, 2-- turbine low pressure cylinders, 3-- condensers, 4-- heat exchangers for district heatings；5-- No.1s
Temperature-decreased pressure reducer, No. bis- temperature-decreased pressure reducers of 6--, 10-- mesolow communicating pipes, 11-- heating extraction steam pipe, 12-- cooling steams pipe,
13-- heating steam extractions bypass, the bypass of 14-- heat supply networks return pipe, 15-- heat supply networks feed pipe, 16-- hot net waters, the first valves of 21--,
The second valves of 22--, the first shut-off valves of 23--, 24-- thirds valve, the second shut-off valves of 25--, the 4th valves of 26--, 27-- the 5th
Valve, the 28-the six valve, the 7th valves of 29--.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings and by embodiment, and following embodiment is pair
The explanation of the utility model and the utility model is not limited to following embodiment.
Embodiment.
It is a kind of to improve the solidifying system for taking out the back of the body for thermal safety of unit, it is characterised in that：Including Steam Turbine Through IP Admission 1, steamer
5, No. two machine low pressure (LP) cylinder 2, condenser 3, heat exchangers for district heating 4, No.1 temperature-decreased pressure reducer temperature-decreased pressure reducers 6.
Mesolow communicating pipe 10 is connected between Steam Turbine Through IP Admission 1 and turbine low pressure cylinder 2, on mesolow communicating pipe 10
Equipped with the first valve 21, turbine low pressure cylinder 2 is connect with condenser 3；The both ends of first valve 21 are parallel with cooling steam pipe 12,
The both ends of cooling steam pipe 12 are connect with mesolow communicating pipe 10 and turbine low pressure cylinder 2 respectively, and 12 upper edge of cooling steam pipe is steamed
Vapour flow direction is sequentially arranged with the second valve 22, No.1 temperature-decreased pressure reducer 5 and the first shut-off valve 23.
Mesolow communicating pipe 10 between Steam Turbine Through IP Admission 1 and the first valve 21 is connected with heating extraction steam pipe 11, in it is low
Pressure is connect by heating extraction steam pipe 11 with heat exchangers for district heating 4 communicating pipe 10, and the 4th valve 26 is housed on heating extraction steam pipe 11.
Heating pumping is connected between heating extraction steam pipe 11 and condenser 3 between mesolow communicating pipe 10 and the 4th valve 26
Vapour bypass 13, the direction that heating steam extraction bypasses the flowing of 13 upper edge steam are sequentially arranged with 24, No. two 6 and of temperature-decreased pressure reducer of third valve
Second shut-off valve 25.
The water inlet of heat exchangers for district heating 4 is connected with heat supply network return pipe 14, and the 7th valve 29 is housed on heat supply network return pipe 14；Heat
The water outlet of net heater 4 is connected with heat supply network feed pipe 15, and the 5th valve 27 is housed on heat supply network feed pipe 15.
Preferably, the water side of heat exchangers for district heating 4 bypasses 16 equipped with hot net water, and the 6th is equipped in hot net water bypass 16
Valve 28.
In the heating high and cold phase, the first valve 21 is closed, opens the 4th valve 26, the steam discharge of Steam Turbine Through IP Admission 1 is whole
Confess external heat supply.At this point, opening and adjusting the second valve 22, one small flow steam of 1 steam discharge of Steam Turbine Through IP Admission passes through
Cooling steam pipe 12 first passes through No.1 temperature-decreased pressure reducer 5 and carries out pressure and temperature reducing, then opens the first shut-off valve 23, the pressure and temperature reducing
Steam afterwards enters turbine low pressure cylinder 2 as cooling steam, is cooled down to turbine low pressure cylinder 2.
At this point, the external heating load of Steam Turbine has obtained great increase, for so big heating load, and steam turbine
Low pressure (LP) cylinder 2 no longer does work into steam, when the variation that extraneous thermic load drastically reduces suddenly, at this moment will there is certain peace
Full hidden danger.
At this point, this example increases the safety of Steam Turbine heat supply by heating steam extraction bypass 13.When extraneous thermic load
When drastically reducing, third valve 24 can be opened and be adjusted, is changed into heat exchangers for district heating 4 using heating steam extraction bypass 13
Throttle flow, the steam into heating steam extraction bypass 13 first pass through No. two 6 pressure and temperature reducings of temperature-decreased pressure reducer, open the second shut-off valve
25, the steam after pressure and temperature reducing enters condenser 3, extra steam is dissolved using condenser 3, to improve unit heat supply
Safety.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of parts and components is named
Claiming etc. can be different, described in this specification above content is only to the utility model structure example explanation.
The equivalence changes or simple change that all structure, feature and principles according to described in the utility model patent concept are done, are wrapped
It includes in the protection domain of the utility model patent.Those skilled in the art of the present invention can be to described
Specific embodiment does various modifications or additions or substitutes by a similar method, without departing from the knot of the utility model
Structure or beyond the scope defined by this claim, all should belong to the protection range of the utility model.
Claims (2)
1. a kind of improving the solidifying system for taking out the back of the body for thermal safety of unit, it is characterised in that：Including Steam Turbine Through IP Admission（1）, steamer
Machine low pressure (LP) cylinder（2）, condenser（3）, heat exchangers for district heating（4）, No.1 temperature-decreased pressure reducer（5）, No. two temperature-decreased pressure reducers（6）；Steamer
Machine intermediate pressure cylinder（1）With turbine low pressure cylinder（2）Between be connected with mesolow communicating pipe（10）, mesolow communicating pipe（10）On be equipped with
First valve（21）, turbine low pressure cylinder（2）With condenser（3）Connection；First valve（21）Both ends be parallel with cooling steam
Pipe（12）, cooling steam pipe（12）Both ends respectively with mesolow communicating pipe（10）And turbine low pressure cylinder（2）Connection, it is cooling to steam
Steam pipe（12）Upper edge steam flow direction is sequentially arranged with the second valve（22）, No.1 temperature-decreased pressure reducer（5）With the first shut-off valve
（23）；Steam Turbine Through IP Admission（1）With the first valve（21）Between mesolow communicating pipe（10）It is connected with heating extraction steam pipe（11）,
Mesolow communicating pipe（10）Pass through heating extraction steam pipe（11）With heat exchangers for district heating（4）Connection, heating extraction steam pipe（11）It is upper equipped with the
Four valves（26）；Mesolow communicating pipe（10）With the 4th valve（26）Between heating extraction steam pipe（11）With condenser（3）Between
It is connected with heating steam extraction bypass（13）, heating steam extraction bypass（13）The direction of upper edge steam flowing is sequentially arranged with third valve
（24）, No. two temperature-decreased pressure reducers（6）With the second shut-off valve（25）；Heat exchangers for district heating（4）Water inlet be connected with heat supply network return pipe
（14）, heat supply network return pipe（14）It is upper that 7th valve is housed（29）；Heat exchangers for district heating（4）Water outlet be connected with heat supply network feed pipe
（15）, heat supply network feed pipe（15）It is upper that 5th valve is housed（27）.
2. according to claim 1 improve the solidifying system for taking out the back of the body for thermal safety of unit, it is characterised in that：The heat supply network adds
Hot device（4）Water side equipped with hot net water bypass（16）, and bypassed in hot net water（16）It is upper that 6th valve is housed（28）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721603525.XU CN207673376U (en) | 2017-11-27 | 2017-11-27 | It is a kind of to improve the solidifying system for taking out the back of the body for thermal safety of unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721603525.XU CN207673376U (en) | 2017-11-27 | 2017-11-27 | It is a kind of to improve the solidifying system for taking out the back of the body for thermal safety of unit |
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| Publication Number | Publication Date |
|---|---|
| CN207673376U true CN207673376U (en) | 2018-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721603525.XU Active CN207673376U (en) | 2017-11-27 | 2017-11-27 | It is a kind of to improve the solidifying system for taking out the back of the body for thermal safety of unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379603A (en) * | 2020-04-07 | 2020-07-07 | 山东华电节能技术有限公司 | Low-pressure cylinder zero-power unit heating pipe bypass system and working method thereof |
-
2017
- 2017-11-27 CN CN201721603525.XU patent/CN207673376U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379603A (en) * | 2020-04-07 | 2020-07-07 | 山东华电节能技术有限公司 | Low-pressure cylinder zero-power unit heating pipe bypass system and working method thereof |
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