CN212481250U - Deaerator combined utilization system for improving cold and re-steam supply capacity of boiler - Google Patents
Deaerator combined utilization system for improving cold and re-steam supply capacity of boiler Download PDFInfo
- Publication number
- CN212481250U CN212481250U CN202021870871.6U CN202021870871U CN212481250U CN 212481250 U CN212481250 U CN 212481250U CN 202021870871 U CN202021870871 U CN 202021870871U CN 212481250 U CN212481250 U CN 212481250U
- Authority
- CN
- China
- Prior art keywords
- steam
- cold
- heat exchanger
- heat recovery
- pipeline
- 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.)
- Active
Links
Images
Landscapes
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Degasification And Air Bubble Elimination (AREA)
Abstract
The utility model discloses a deaerator combined utilization system for improving the cold and re-steam supply capacity of a boiler, which comprises a high-pressure cylinder, a steam pipeline and a steam return pipeline; cold re-steam of the high-pressure cylinder enters a steam pipeline; be provided with low pressure feed water heater, heat recovery heat exchanger and oxygen-eliminating device on the steam return line, the partial heat of cold steam again carries out the heat transfer through the condensate water of heat recovery heat exchanger with steam return line, and the condensate water of heat transfer exports to the oxygen-eliminating device in, and the partial heat of steam again will cool shifts to in the oxygen-eliminating device. The utility model discloses can effectively promote the cold industry of boiler again and supply vapour ability, reduce the overtemperature risk of boiler reheater to can on line put into operation and shut down, this system can effectively promote the flow that the unit cold supplies vapour again and then promote unit economic nature.
Description
[ technical field ] A method for producing a semiconductor device
The utility model belongs to the technical field of the energy is used multipurposely, a promote oxygen-eliminating device joint utilization system of cold vapour ability of supplying again of boiler is related to.
[ background of the invention ]
The external industrial steam supply can effectively reduce the energy consumption index of the thermal power generating unit and is one of the important profit directions of the heat supply unit. Meanwhile, on the basis of meeting the requirements of industrial steam supply users on steam parameters, steam with lower quality is used as much as possible, so that economic operation of a unit is facilitated. Therefore, the direction of improving the industrial steam supply economy of the unit is to increase the industrial steam supply and reduce the steam supply parameters as much as possible.
At present, the industrial steam supply unit uses cold reheat steam as a steam source, but because cold reheat steam is more if extracted, the danger of overtemperature appears easily in the boiler reheater, so the extraction amount of the cold reheat steam of many units is greatly restricted, the requirement of a user can not be completely met, the outlet steam of the low-temperature reheater with higher steam quality or even reheated steam can only be utilized, meanwhile, the temperature of the cold reheat steam is generally higher than the requirement of the user by dozens of degrees centigrade, and the cold reheat steam needs to be sprayed with desuperheating water for desuperheating. If through technical means, the temperature of cold reheat steam is rationally reduced, other positions that transfer unnecessary heat to the generating set make full use of, then can effectively reduce the risk of boiler reheater overtemperature to can increase the supply steam volume of unit cold reheat by a wide margin.
[ summary of the invention ]
An object of the utility model is to solve the problem among the prior art, provide a promote oxygen-eliminating device joint utilization system of cold vapour ability of supplying again of boiler, the utility model discloses use oxygen-eliminating device import condensate water to cool the cold steam again of cooling source cooling part, reduce the cold steam temperature again of unit, reduce the super temperature risk of boiler reheater, promote the cold industry vapour ability of supplying again of unit.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
a deaerator combined utilization system for improving cold and re-steam supply capacity of a boiler comprises a high-pressure cylinder, a steam pipeline and a steam return pipeline;
cold re-steam of the high-pressure cylinder enters a steam pipeline; be provided with low pressure feed water heater, heat recovery heat exchanger and oxygen-eliminating device on the steam return line, the partial heat of cold steam again carries out the heat transfer through the condensate water of heat recovery heat exchanger with steam return line, and the condensate water of heat transfer exports to the oxygen-eliminating device in, and the partial heat of steam again will cool shifts to in the oxygen-eliminating device.
The utility model discloses further improvement lies in:
the steam pipeline is provided with a flow regulating pore plate, the heat recovery heat exchanger is connected on the flow regulating pore plate in parallel, cold re-steam enters the heat recovery heat exchanger through the first steam pipeline isolation valve to exchange heat, and the cold re-steam after heat exchange is converged with the cold re-steam passing through the flow regulating pore plate through the second steam pipeline isolation valve and then is output.
The outlet of the low-pressure heater is connected with the cold side inlet of the heat recovery heat exchanger, and the cold side outlet of the heat recovery heat exchanger is connected with the deaerator.
And a bypass pipeline is also connected in parallel on the heat recovery heat exchanger, and a bypass isolating valve is arranged on the bypass pipeline.
The inlet of the heat recovery heat exchanger is provided with a water inlet isolation valve, the outlet of the heat recovery heat exchanger is provided with a water outlet isolation valve, and the bypass pipelines are connected in parallel at two ends of the water inlet isolation valve, the heat recovery heat exchanger and the water outlet isolation valve.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a heat recovery heat exchanger shifts to the oxygen-eliminating device with cold partial heat of redistributing, can reduce cold above 25 ℃ of redistributing temperature on the one hand, and multiplicable cold industry supplies vapour volume more than 150%, and the unit can be because outside the promotion of steam supply ability and the use that reduces high-quality steam and the economic nature is promoted to also can reduce the use that industry supplied vapour desuperheating water.
The utility model discloses set up the heat recovery heat exchanger, utilize the cold steam heating oxygen-eliminating device import condensate water again of part to reach the energy and jointly shift the utilization, and then reduce the risk of boiler re-heater overtemperature, increase the maximum heating capacity of cold steam again, reduce the volume of putting into use of cold steam-supply desuperheating water again, promote unit operation economy. The utility model discloses can be applied to and use the cold secondary reheat generating set that supplies vapour to external industry again, the heat part that will cool the reheat through the heat transfer utilizes the oxygen-eliminating device into water, reduce the temperature that cold reheat and external industry supplied vapour, reduce the risk that the reheater was overtemperature when the boiler cold supplies vapour again externally, promote the cold maximum ability that supplies vapour to external industry again, reduce the use of high-quality steam such as reheat steam, reduce the use that industry supplied vapour desuperheating water, and then can promote the economic nature that the unit supplied vapour, reduce the coal consumption of generating electricity.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic diagram of the system structure of the present invention.
Wherein, 1-high pressure cylinder of steam turbine; 2-a first steam line isolation valve; 3-a low pressure heater; 4-heat recovery heat exchanger; 5-a second steam line isolation valve; 6-flow regulating orifice plate; 7-a water inlet isolation valve; 8-a water outlet isolation valve; 9-a bypass isolation valve; 10-deaerator.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that, if the terms "upper", "lower", "horizontal", "inner", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings or the orientation or position relationship that the product of the present invention is usually placed when in use, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be interpreted as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the term "horizontal", if present, does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, the utility model discloses a deaerator joint utilization system for improving boiler cold re-steam supply capacity, including first steam pipe isolation valve 2, heat recovery heat exchanger 4, second steam pipe isolation valve 5, flow regulation orifice 6, water inlet isolation valve 7, water outlet isolation valve 8, bypass isolation valve 9; cold vapor passes through the steam conduit and gets into heat recovery heat exchanger 4 again, be provided with first steam conduit isolating valve 2 between the pipeline, cold vapor mixes with former steam through the steam return pipeline after the heat transfer cooling again, be provided with second steam conduit isolating valve 5 between the steam return pipeline, cold vapor conduit is last newly to establish flow control orifice 6 and is used for balanced steam flow, the condensate water of low pressure heater export enters heat recovery heat exchanger 4 behind the isolating valve 7 that intakes, the condensate water is through a water isolating valve 8 after the steam heating, later reentry the oxygen-eliminating device, heat recovery heat exchanger 4 is provided with bypass isolating valve 9 simultaneously.
The principle of the utility model is as follows:
the heat recovery heat exchanger 4 transfers the heat part of the cold re-steam to the deaerator, so that the temperature of the cold re-steam can be reduced by more than 25 ℃, the risk of overtemperature of a boiler reheater is reduced, the cold re-industrial steam supply amount is increased by more than 150%, and the operation of the unit cold re-steam-supply desuperheating water can be reduced. The increase of the industrial steam supply can greatly improve the economic index of the unit.
The utility model discloses a working process:
in the utility model, after part of cold re-steam of the high-pressure cylinder of the steam turbine passes through the first steam pipeline isolation valve 2, the heat recovery heat exchanger 4 and the second steam pipeline isolation valve 5, the steam which is subjected to heat exchange by the heat recovery heat exchanger 4 is converged with the original cold re-steam, and the other part of cold re-steam which is not subjected to heat exchange is converged with the cooled cold re-steam after passing through the flow regulating orifice 6; the condensed water discharged from the low-pressure heater 3 passes through the water inlet isolation valve 7, the heat recovery heat exchanger 4 and the water outlet isolation valve 8 and is heated by partial cold re-steam, and the heated condensed water enters the deaerator 10.
When the steam turbine normally operates, the first steam pipeline isolation valve 2, the second steam pipeline isolation valve 5, the water inlet isolation valve 7 and the water outlet isolation valve 8 are all in an open state, and the bypass isolation valve 9 is in a closed state; when the unit does not use cold and supplies steam to the outside, the first steam pipeline isolation valve 2 and the second steam pipeline isolation valve 5 are closed in sequence, then the bypass isolation valve 9 is opened gradually, and the heat recovery heat exchanger 4 is in a shutdown state.
The utility model discloses the principle is clear, the system is simple, and the maintenance volume is little, can be on-line put into operation and shut down, is adapted to all secondary reheat generating set, is the innovation technique that promotes reheat generating set cold industry steam supply volume again, reduces boiler reheater overtemperature risk, lifting machine group heating economy nature.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A deaerator combined utilization system for improving cold and steam supply capacity of a boiler is characterized by comprising a high-pressure cylinder (1), a steam pipeline and a steam return pipeline;
cold re-steam of the high-pressure cylinder (1) enters a steam pipeline; be provided with low pressure feed water heater (3), heat recovery heat exchanger (4) and oxygen-eliminating device (10) on the steam return line, the partial heat of cold vapor again carries out the heat transfer through heat recovery heat exchanger (4) and the condensate water of steam return line, and the condensate water of heat transfer exports to in oxygen-eliminating device (10), and the partial heat of the steam of will cooling vapor again shifts to in oxygen-eliminating device (10).
2. The deaerator combined utilization system for improving cold re-steam supply capacity of a boiler according to claim 1 is characterized in that a flow regulating pore plate (6) is arranged on the steam pipeline, the heat recovery heat exchanger (4) is connected to the flow regulating pore plate (6) in parallel, cold re-steam enters the heat recovery heat exchanger (4) through the first steam pipeline isolation valve (2) for heat exchange, and the cold re-steam after heat exchange is converged with the cold re-steam passing through the flow regulating pore plate (6) through the second steam pipeline isolation valve (5) and then is output.
3. The deaerator combined utilization system for improving boiler cold and steam supply capacity of claim 1, characterized in that an outlet of the low-pressure heater (3) is connected with a cold side inlet of the heat recovery heat exchanger (4), and a cold side outlet of the heat recovery heat exchanger (4) is connected with a deaerator (10).
4. The deaerator combined utilization system for improving the cold and steam supply capacity of the boiler as claimed in claim 2 or 3, characterized in that a bypass pipeline is connected in parallel to the heat recovery heat exchanger (4), and a bypass isolation valve (9) is arranged on the bypass pipeline.
5. The deaerator combined utilization system for improving the cold and steam supply capacity of a boiler according to claim 4 is characterized in that a water inlet isolation valve (7) is arranged at an inlet of the heat recovery heat exchanger (4), a water outlet isolation valve (8) is arranged at an outlet of the heat recovery heat exchanger, and bypass pipelines are connected in parallel to two ends of the water inlet isolation valve (7), the heat recovery heat exchanger (4) and the water outlet isolation valve (8).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021870871.6U CN212481250U (en) | 2020-08-31 | 2020-08-31 | Deaerator combined utilization system for improving cold and re-steam supply capacity of boiler |
| JP2020005017U JP3230555U (en) | 2020-08-31 | 2020-11-20 | Oxygen remover combined utilization system to improve boiler cold reheat steam supply capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021870871.6U CN212481250U (en) | 2020-08-31 | 2020-08-31 | Deaerator combined utilization system for improving cold and re-steam supply capacity of boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212481250U true CN212481250U (en) | 2021-02-05 |
Family
ID=74225968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021870871.6U Active CN212481250U (en) | 2020-08-31 | 2020-08-31 | Deaerator combined utilization system for improving cold and re-steam supply capacity of boiler |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3230555U (en) |
| CN (1) | CN212481250U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928231A (en) * | 2020-08-31 | 2020-11-13 | 西安热工研究院有限公司 | Deaerator combined utilization system and method for improving cold and re-steam supply capacity of boiler |
-
2020
- 2020-08-31 CN CN202021870871.6U patent/CN212481250U/en active Active
- 2020-11-20 JP JP2020005017U patent/JP3230555U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928231A (en) * | 2020-08-31 | 2020-11-13 | 西安热工研究院有限公司 | Deaerator combined utilization system and method for improving cold and re-steam supply capacity of boiler |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3230555U (en) | 2021-02-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105888748B (en) | Comprehensive energy efficiency system for heating low-pressure cylinder polished shaft cooling and small turbine steam exhaust waste heat recovery | |
| CN106979041A (en) | A kind of turbine low pressure cylinder high vacuum takes off the remodeling method that cylinder runs thermoelectricity decoupled system | |
| CN105697075A (en) | Extraction condensing heat supply system additionally provided with non-reheat medium-pressure steam turbine | |
| CN104763484B (en) | Air cooling turbine high back pressure heat supply power generating simultaneously method | |
| CN111911250A (en) | Water supply combined cold recycling system and method for improving steam supply capacity of boiler | |
| CN202734015U (en) | Rough vacuum circulating water heat supply system of thermal power plant | |
| CN110285470A (en) | Mating steam turbine heating plant and its operation method | |
| CN212389395U (en) | Water supply combined cold recycling system for improving steam supply capacity of boiler | |
| CN109869205A (en) | It is a kind of for the heat accumulation of cogeneration units, power generation and heating system | |
| CN112856363A (en) | System and method for improving heat supply steam parameters of deep peak shaving heat supply unit | |
| CN109751652B (en) | High back pressure and heat pump combined heat supply system of 300MW and above grade wet cooling unit | |
| CN212481250U (en) | Deaerator combined utilization system for improving cold and re-steam supply capacity of boiler | |
| CN205351277U (en) | A back pressure steam turbine thermodynamic system for isolated network operation | |
| CN212406838U (en) | Condensate water combined utilization system for improving cold and steam supply capacity of boiler | |
| CN109441577A (en) | Absorption heat pump cogeneration units recirculated cooling water tower operation method above freezing | |
| CN212389398U (en) | Combined cold recirculation system of deaerator for improving steam supply capacity of boiler | |
| CN203499741U (en) | Backpressure steam extraction small steam turbine thermal system coaxially arranged with primary reheating main steam turbine set | |
| CN104612766B (en) | It is applied to the saturated steam turbine electricity generation system on independent island of gasifying | |
| CN113237134A (en) | Geothermal energy central heating system based on electric heating pump unit | |
| CN218467677U (en) | Coal-fired power generation system of coupling steam heat-retaining | |
| CN112065520A (en) | Cold and hot re-cooperative steam supply system and method | |
| CN111928231A (en) | Deaerator combined utilization system and method for improving cold and re-steam supply capacity of boiler | |
| CN111911253A (en) | Deaerator combined cold recirculation system and method for improving steam supply capacity of boiler | |
| CN111927587A (en) | Condensate water combined circulation system and method for improving cold and steam supply capacity of boiler | |
| CN203626905U (en) | Saturated steam turbine power generating system applied to independent gasification island |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |