CN203717050U - Heat supply device high in heat supply reliability - Google Patents
Heat supply device high in heat supply reliability Download PDFInfo
- Publication number
- CN203717050U CN203717050U CN201420026467.9U CN201420026467U CN203717050U CN 203717050 U CN203717050 U CN 203717050U CN 201420026467 U CN201420026467 U CN 201420026467U CN 203717050 U CN203717050 U CN 203717050U
- Authority
- CN
- China
- Prior art keywords
- heat supply
- steam
- female pipe
- heat
- extraction
- 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 - Lifetime
Links
- 238000000605 extraction Methods 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000010248 power generation Methods 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims description 26
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 230000000694 effects Effects 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000013555 soy sauce Nutrition 0.000 description 1
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
- Control Of Turbines (AREA)
Abstract
The utility model discloses a heat supply device high in heat supply reliability. The heat supply device is connected with a power generation system, and the power generation system comprises a plurality of boilers and turbines identical with the boilers in number. A steam delivery pipeline is arranged between each boiler and a corresponding turbine. Each boiler comprises a reheater. The heat supply device comprises an emergency heat supply mother pipe, a steam extraction heat supply mother pipe, a steam collection tank B communicated with one reheater and steam collection tanks A communicated with other reheaters. The emergency heat supply mother pipe is communicated with each steam delivery pipeline through a bypass pipe arranged on the pipeline and is communicated with the steam collection tank B through a temperature reducing water adjusting valve. The heat supply device has the advantages of being high in heat supply reliability, easy in bypass system investment, good in temperature adjusting effect, good in safety and capable of reducing energy waste.
Description
Technical field
The utility model relates to heat supply process field, specifically relates to a kind of bypath system and drops into easily, and temperature lowering effect is good, the heating arrangement that reliability of heat-supply system is high.
Background technique
Turbine bypass system is the steam temperature reducing and pressure reducing system in parallel with steam turbine, and Main Function is: the steam parameter of coordinating boiler export and steam turbine import when unit opens, shuts down; When opening, stop or have an accident, unit protects reheater; Reclaim working medium.Whole steam turbine of steam by-pass, the system of directly introducing vapour condenser are called integral bypass; Steam by-pass high-pressure cylinder be called high pressure turbine by; In steam by-pass, in being called of low pressure (LP) cylinder, low voltage bypass.
Chinese patent mandate publication number: CN102996191A, authorize open day on March 27th, 2013, the adjustable heating system of a kind of fired power generating unit black soy sauce is disclosed, by steam turbine heat supply pipeline is transformed, on high-pressure cylinder, intermediate pressure cylinder SS road, set up respectively first bypass duct and second bypass duct in parallel with high-pressure cylinder, intermediate pressure cylinder, realize high pressure steam supply.But these patents have just been done simple transformation to bypath system, rare consideration is the operation of the rear whole thermodynamic system of heat engine group heat supply transformation again.The deficiency of this invention is, during unit hot starting, hot start, bypath system drops into difficulty, and temperature lowering effect is poor, has water hammer, and valve and pipe vibration are larger.
Summary of the invention
Goal of the invention of the present utility model is that bypath system drops into difficulty when overcoming the unit hot starting, hot start of heating arrangement in prior art, temperature lowering effect is poor, there is water hammer, the deficiency that valve and pipe vibration are larger, provide a kind of bypath system to drop into easily, temperature lowering effect is good, the heating arrangement that reliability of heat-supply system is high.
To achieve these goals, the utility model is by the following technical solutions:
The heating arrangement that reliability of heat-supply system is high, described heating arrangement is connected with power generation system, and described power generation system comprises several boilers and the steam turbine identical with boiler quantity; Between each boiler and each steam turbine, be provided with the gas pipeline for defeated vapour, each boiler includes reheater; Described heating arrangement comprises the female pipe of emergency heat supply, the female pipe of extraction for heat supply, the B collection vapour header being connected with 1 reheater and the A collection vapour header being all communicated with other reheater; The female pipe of described emergency heat supply is connected with gas pipeline by being located at defeated vapour by-pass pipe on each gas pipeline, and the female pipe of emergency heat supply is connected with B collection vapour header by pressure and temperature reducing modulating valve; The female pipe of described extraction for heat supply is connected for extracting the extraction steam pipe of the high-pressure cylinder steam of corresponding steam turbine with at least 1, and the female pipe of extraction for heat supply is connected with A collection vapour header and B collection vapour header respectively by pressure matcher; A collection vapour header and B collection vapour header are connected and are all connected with several user's heat supply pipelines.
The bypass heating system of the female pipe of emergency heat supply in the utility model for using in traditional power plant.By Desuperheating water regulating valve, can in heating arrangement, add the cooling water for desuperheat to carry out steam regulation temperature.
In the utility model, the reheater of #4 boiler and B collection vapour header are connected, and the reheater of other boiler and A collection vapour header are connected; When #4 boiler is when declared working condition is moved, the steam in the reheater of #4 boiler is directly delivered to collection vapour header B, and under #4 boiler failure or underrun condition, the vapour source of collection vapour header B provides by collecting the female pipe of vapour header A and extraction for heat supply.Collection vapour header A is connected by Dn500 pipeline with collection vapour header B, to improve the flexibility of heat supply.
Therefore, the utility model utilizes the high-pressure cylinder exhauster system of power plant's reheat steam turbine group to carry out heating system design, makes the bypass heating system of traditional power plant as emergency use thermal source, and bypass heat supply drops into easily, and temperature lowering effect is good, and reliability of heat-supply system is high.
As preferably, described boiler, reheater and steam turbine are 4 to 8; The female pipe of described extraction for heat supply be respectively used to extract the high-pressure cylinder of 2 steam turbine in 2 extraction steam pipes of steam be connected.
As preferably, the female pipe of described emergency heat supply is connected with each by-pass pipe by high pressure bypass valve.High pressure bypass valve is for regulating the steam flow that enters the female pipe of emergency heat supply.
As preferably, the female pipe of extraction for heat supply is connected with extraction steam pipe by the mortor operated valve that draws gas.Draw gas mortor operated valve for regulating the steam flow that enters the female pipe of extraction for heat supply.
As preferably, the female pipe of described emergency heat supply is provided with several drain valves.Drain valve is used for emitting ducted condensed water.Drain valve is used for emitting ducted condensed water.
As preferably, the female pipe of emergency heat supply is provided with several Desuperheating water regulating valves.By Desuperheating water regulating valve, can in heating arrangement, add the cooling water for desuperheat to carry out steam regulation temperature.
Therefore, the utlity model has following beneficial effect: (1) reliability of heat-supply system is high; (2) bypath system drops into easily, and temperature regulating effect is good; (3) Security is good, reduces energy waste.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
In figure: reheater 1, the female pipe 2 of emergency heat supply, the female pipe 3 of extraction for heat supply, B collection vapour header 4, A collection vapour header 5, by-pass pipe 6, Desuperheating water regulating valve 7, extraction steam pipe 8, pressure matcher 9, user's heat supply pipeline 10, high pressure bypass valve 11, the mortor operated valve 12 that draws gas, drain valve 13.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Embodiment is as shown in Figure 1 the heating arrangement that a kind of reliability of heat-supply system is high, and heating arrangement is connected with power generation system, power generation system comprise 4 boilers and with 4 steam turbine; Between each boiler and each steam turbine, be provided with the gas pipeline for defeated vapour, each boiler includes reheater 1; Heating arrangement comprises the A collection vapour header 5 that the female pipe 2 of emergency heat supply, the female pipe 3 of extraction for heat supply, the B collection vapour header 4 being connected with #4 reheater and #1, #2 and #3 reheater are all communicated with; The female pipe of emergency heat supply is connected with gas pipeline by the by-pass pipe 6 of being located on each gas pipeline, and the female pipe of emergency heat supply is connected with B collection vapour header by Desuperheating water regulating valve 7; The female pipe of extraction for heat supply is connected with the extraction steam pipe 8 of steam in the high-pressure cylinder of #2, #3 steam turbine respectively, and the female pipe of extraction for heat supply is connected with A collection vapour header and B collection vapour header respectively by pressure matcher 9; A collection vapour header and B collection vapour header are connected and are all connected with user's heat supply pipeline 10.
The female pipe of emergency heat supply is connected with each by-pass pipe by high pressure bypass valve 11.The female pipe of extraction for heat supply is connected with extraction steam pipe by the mortor operated valve 12 that draws gas.The female pipe of emergency heat supply is provided with drain valve 13.The female pipe of emergency heat supply is provided with Desuperheating water regulating valve.
The utility model transform example as with 4 215MW heat supplies of Zhenghai Power Generation Corporation Ltd., to two of Zhenghai Power Generation Corporation Ltd., three phases, heat, pure condensate unit carry out heat supply transformation again, engineering design heat load is considered by the recent period average 400t/h, the hot user in the pool, gulf sheet, section, flood dragon river, industrial region, rear seawall, economic technical development area, Zhenghai who mainly meets Craft in Chemical Industrial Area, Ningbo uses the needs of vapour and development, also be conducive to Craft in Chemical Industrial Area, Ningbo and invite outside investment, avoid overlapping construction.Heat load at a specified future date is pressed 1000t/h and is considered.
In the utility model, the reheater of #4 boiler and B collection vapour header are connected, and the reheater of #1, #2 and #3 boiler and A collection vapour header are connected; When #4 boiler is when declared working condition is moved, the steam in the reheater of #4 boiler is directly delivered to collection vapour header B, and under #4 boiler failure or underrun condition, the vapour source of collection vapour header B provides by collecting the female pipe of vapour header A and extraction for heat supply.Collection vapour header A is connected by Dn500 pipeline with collection vapour header B, to improve the flexibility of heat supply.
Therefore, the utility model utilizes the high-pressure cylinder exhauster system of power plant's reheat steam turbine group to carry out heating system design, makes the bypass heating system of traditional power plant as emergency use thermal source, and bypass heat supply drops into easily, and temperature regulating effect is good, and reliability of heat-supply system is high.
High pressure bypass valve of the present utility model is that C9Z61Y-P5414.0V DN150/400 angle type is arranged; Desuperheating water regulating valve is that the straight type of TP9Z64Y-25.0IDN60 is arranged.
High pressure bypass valve
Desuperheating water regulating valve
Table 1
Should be understood that the present embodiment is only not used in restriction scope of the present utility model for the utility model is described.In addition should be understood that those skilled in the art can make various changes or modifications the utility model after having read the content of the utility model instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (6)
1. the high heating arrangement of reliability of heat-supply system, described heating arrangement is connected with power generation system, and described power generation system comprises several boilers and the steam turbine identical with boiler quantity; Between each boiler and each steam turbine, be provided with the gas pipeline for defeated vapour, each boiler includes reheater (1); It is characterized in that, described heating arrangement comprises the female pipe of emergency heat supply (2), the female pipe of extraction for heat supply (3), the B collection vapour header (4) being connected with 1 reheater and the A collection vapour header (5) being all communicated with other reheater; The female pipe of described emergency heat supply is connected with gas pipeline by the by-pass pipe (6) of being located on each gas pipeline, and the female pipe of emergency heat supply is connected with B collection vapour header by Desuperheating water regulating valve (7); The female pipe of described extraction for heat supply is connected for extracting the extraction steam pipe (8) of the high-pressure cylinder steam of corresponding steam turbine with at least 1, and the female pipe of extraction for heat supply is connected with A collection vapour header and B collection vapour header respectively by pressure matcher (9); A collection vapour header and B collection vapour header are connected and are all connected with several user's heat supply pipelines (10).
2. the high heating arrangement of reliability of heat-supply system according to claim 1, is characterized in that, described boiler, reheater and steam turbine are 4 to 8; The female pipe of described extraction for heat supply be respectively used to extract the high-pressure cylinder of 2 steam turbine in 2 extraction steam pipes of steam be connected.
3. the high heating arrangement of reliability of heat-supply system according to claim 1, is characterized in that, the female pipe of described emergency heat supply is connected with each by-pass pipe by high pressure bypass valve (11).
4. the high heating arrangement of reliability of heat-supply system according to claim 1, is characterized in that, the female pipe of extraction for heat supply is connected with extraction steam pipe by the mortor operated valve that draws gas (12).
5. the high heating arrangement of reliability of heat-supply system according to claim 1, is characterized in that, the female pipe of described emergency heat supply is provided with several drain valves (13).
6. according to the high heating arrangement of reliability of heat-supply system described in claim 1 or 2 or 3 or 4 or 5, it is characterized in that, the female pipe of emergency heat supply is provided with several Desuperheating water regulating valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420026467.9U CN203717050U (en) | 2014-01-16 | 2014-01-16 | Heat supply device high in heat supply reliability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420026467.9U CN203717050U (en) | 2014-01-16 | 2014-01-16 | Heat supply device high in heat supply reliability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203717050U true CN203717050U (en) | 2014-07-16 |
Family
ID=51156213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420026467.9U Expired - Lifetime CN203717050U (en) | 2014-01-16 | 2014-01-16 | Heat supply device high in heat supply reliability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203717050U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120147A (en) * | 2017-04-17 | 2017-09-01 | 华电电力科学研究院 | A kind of varying duty thermal power plant heating energy-saving structure and its adjusting method |
| CN109113799A (en) * | 2017-06-26 | 2019-01-01 | 中国电力工程顾问集团华北电力设计院有限公司 | A kind of novel thermoelectricity decoupling therrmodynamic system |
-
2014
- 2014-01-16 CN CN201420026467.9U patent/CN203717050U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120147A (en) * | 2017-04-17 | 2017-09-01 | 华电电力科学研究院 | A kind of varying duty thermal power plant heating energy-saving structure and its adjusting method |
| CN107120147B (en) * | 2017-04-17 | 2023-04-18 | 华电电力科学研究院有限公司 | Variable-load thermal power plant industrial heat supply energy-saving structure and adjusting method thereof |
| CN109113799A (en) * | 2017-06-26 | 2019-01-01 | 中国电力工程顾问集团华北电力设计院有限公司 | A kind of novel thermoelectricity decoupling therrmodynamic system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203685322U (en) | Steam extraction heat supply system for 350MW supercritical heat supply unit | |
| CN105697075A (en) | Extraction condensing heat supply system additionally provided with non-reheat medium-pressure steam turbine | |
| CN104763485B (en) | A kind of concurrent heating type ultrahigh pressure/subcritical back pressure thermal power plant unit thermodynamic system | |
| CN104775860A (en) | System for improving reliability of heat supply network of subcritical coal-fired unit | |
| CN106838865B (en) | Completely thermoelectric decoupling steam extraction and heat supply power station system and working method | |
| CN103953915B (en) | High-pressure heater reclaims the method for the hydrophobic working medium of double reheat boiler startup and heat | |
| CN104976671B (en) | Wide-load heat supply energy-saving system of back pressure type small steam turbine driven water feeding pump | |
| CN204591384U (en) | A kind of system improving subcritical coal unit reliability of heating network | |
| CN103089439B (en) | Boulez pauses-steam Rankine-organic Rankine combined cycle cogeneration device | |
| CN205957280U (en) | Absorption heat pump heating steam extracting and heat supplying system | |
| CN104533554B (en) | A kind of new and effective water supply heat back system for single reheat unit | |
| CN105698161A (en) | Coal-fired power plant energy level matching heat integration system based on primary air | |
| CN205351277U (en) | A back pressure steam turbine thermodynamic system for isolated network operation | |
| CN104456519A (en) | Novel efficient water supply heat recovery system for secondary reheating unit | |
| CN203717050U (en) | Heat supply device high in heat supply reliability | |
| CN209279143U (en) | A kind of system promoting unit steam supply ability using reheater increase-volume | |
| CN105042666B (en) | Wide-load heat supply energy-saving system of back pressure type small steam turbine driven draught fan | |
| CN102494329B (en) | Device for utilizing flue gas waste heat of boiler comprehensively | |
| CN112065520A (en) | Cold and hot re-cooperative steam supply system and method | |
| CN204827562U (en) | Little steam turbine energy cascade utilization system of thermal power plant | |
| CN104832227B (en) | Coal-fired unit efficient subcritical system | |
| CN104594964B (en) | A kind of novel single shaft gas theory thermal power plant unit system | |
| CN207674551U (en) | A kind of cooling tower antifreezing system for the solidifying pumping back of the body heat supply of steam turbine | |
| CN203810382U (en) | Switchable secondary reheat steam surface type desuperheater system of ultra-supercritical unit | |
| CN214223075U (en) | Novel desuperheating water system of million tower boiler superheater and reheater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |