CN203731374U - Drain structure of low-pressure heater regenerative system of power station - Google Patents
Drain structure of low-pressure heater regenerative system of power station Download PDFInfo
- Publication number
- CN203731374U CN203731374U CN201320887203.8U CN201320887203U CN203731374U CN 203731374 U CN203731374 U CN 203731374U CN 201320887203 U CN201320887203 U CN 201320887203U CN 203731374 U CN203731374 U CN 203731374U
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- pipe
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- pressure heater
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- 230000001172 regenerating effect Effects 0.000 title claims abstract description 14
- 238000005086 pumping Methods 0.000 claims abstract description 8
- 230000002209 hydrophobic effect Effects 0.000 claims description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 230000006698 induction Effects 0.000 claims description 12
- 239000007788 liquid Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 6
- 238000000605 extraction Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010010 raising Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Abstract
The utility model relates to a drain structure of a low-pressure heater regenerative system of a power station. At present, no similar structure reasonable in structural design is available. The drain structure comprises a current-stage low-pressure heater, a previous-stage low-pressure heater, a previous-stage condensate inlet pipeline, a current-stage drain pipe and a previous-stage drain pipe. The drain structure is characterized by further comprising a jet pump, a current-stage tee joint, a pumped valve, a pumped pipe, a pumping pipe, a pumping valve, a condensate pipe tee joint, a mixed ejection pipe, an ejection valve and a previous-stage tee joint. The current-stage tee joint is mounted on the current-stage drain pipe. One end of the pumped pipe is connected on the current-stage tee joint while the other end is connected on the jet pump. The pumped valve is mounted on the pumped pipe. The condensate pipe tee joint is mounted on the previous-stage condensate inlet pipeline, the previous-stage tee joint is mounted on the previous-stage drain pipe, one end of the mixed ejection pipe is connected on the previous-stage tee joint while the other end is connected on the jet pump, and the ejection valve is mounted on the mixed ejection pipe. The drain structure is reasonable in structural design, and heat economy of a unit can be improved.
Description
Technical field
The utility model relates to the hydrophobic structure of a kind of power station low-pressure heater heat regenerative system, specifically a kind of condensate water that relies on jet pump to utilize this grade of heater to have certain pressure is carried out this grade of heater condensate of injection and is entered adjacent upper level heater, this hydrophobic mode has the characteristics of energy saving of the hydrophobic mode of drainage pump, squeeze part high pressure extraction, improve the heat-economy of unit, solved the not smooth problem of cascaded drain.
Background technology
In fired power generating unit surface heaters at different levels, adopt different hydrophobic modes to produce different heat economy benefits.The hydrophobic mode of surface heater has two kinds substantially at present: a kind of is the hydrophobic method of flowing automatically step by step, utilization has the pressure differential between bleeder heaters at different levels, allow hydrophobic step by step from flowing to the adjoining heater vapor space that heated pressure is lower, systematic comparison is simple, but hydrophobic when flowing to the vapor space of low one-level heater due to high one-level heater, pressure decreased and the heat release of vaporizing, squeeze the amount of drawing gas of more rudimentary heater heating steam, economy is poor, and due to the little blocked drain that causes of the adjacent hydrophobic pressure reduction of low pressure stage; Another kind is drainage pump method, utilize drainage pump power that the hydrophobic upper level heater condensate water of squeezing into is exported, reduce the amount of drawing gas of adjacent upper level heater, the acting of part high pressure extraction in steam turbine increased, improved the heat-economy of unit, but drainage pump very easily cavitates, security reliability is poor, and drainage pump need to consume a large amount of electric energy in running, energy resource consumption is large.Also there is no now a kind of reasonable in design, can improve the heat-economy of unit, can solve the not hydrophobic structure of the power station low-pressure heater heat regenerative system of smooth problem of cascaded drain.
Utility model content
The purpose of this utility model is to overcome above shortcomings in prior art, and provide a kind of reasonable in design, stable and reliable for performance, can improve the heat-economy of unit, can solve the not hydrophobic structure of the power station low-pressure heater heat regenerative system of smooth problem of cascaded drain.
The technical scheme in the invention for solving the above technical problem is: the hydrophobic structure of this power station low-pressure heater heat regenerative system comprises low-pressure heater at the corresponding levels, higher level's low-pressure heater, higher level's condensate water inlet pipeline, drain pipe at the corresponding levels and higher level's drain pipe, one end of described higher level's condensate water inlet pipeline is connected on low-pressure heater at the corresponding levels, the other end of this higher level's condensate water inlet pipeline is connected on higher level's low-pressure heater, one end of described drain pipe at the corresponding levels is connected on low-pressure heater at the corresponding levels, one end of described higher level's drain pipe is connected on higher level's low-pressure heater, and its design feature is: also comprise jet pump, threeway at the corresponding levels, pumped valve, pumped pipe, pump pipe, pump valve, condensate pipe threeway, mix induction tunnel, injecting valve and higher level's threeway, described threeway at the corresponding levels is arranged on drain pipe at the corresponding levels, and described one end of being pumped pipe is connected in threeway at the corresponding levels, and this other end of being pumped pipe is connected on jet pump, and the described valve of being pumped is arranged on and is pumped on pipe, described condensate pipe threeway is arranged on higher level's condensate water inlet pipeline, described in pump pipe one end be connected in condensate pipe threeway, this other end of pumping pipe is connected on jet pump, described in pump valve and be arranged on and pump on pipe, described higher level's threeway is arranged on higher level's drain pipe, and one end of described mixing induction tunnel is connected in higher level's threeway, and the other end of this mixing induction tunnel is connected on jet pump, and described injecting valve is arranged on and mixes on induction tunnel.
As preferably, jet pump described in the utility model comprises pressure piping, nozzle, suction line, trunnion, anemostat and discharge pipe, described suction line, trunnion, anemostat and discharge pipe are connected successively, described nozzle is connected to one end of pressure piping, one end of described pressure piping and suction line coordinate, and described nozzle is arranged in suction line.
As preferably, the axis of the axis of nozzle described in the utility model, the axis of trunnion, anemostat and the axis overlaid of discharge pipe.
The utility model compared with prior art, have the following advantages and effect: reasonable in design, scientific arrangement, energy-conserving and environment-protective, dependable performance, good stability, the condensate water that can rely on jet pump to utilize this grade of heater to have certain pressure is carried out this grade of heater condensate of injection and is entered adjacent upper level heater, and this hydrophobic mode has energy-conservation feature, has squeezed part high pressure extraction, improve the heat-economy of unit, solved the not smooth problem of cascaded drain.
Brief description of the drawings
Fig. 1 is the structural representation of the hydrophobic structure of power station low-pressure heater heat regenerative system in the utility model embodiment.
Fig. 2 is the structure for amplifying schematic diagram of jet pump in the utility model embodiment.
Fig. 3 uses the structural representation that has the 300MW unit of the hydrophobic structure of power station low-pressure heater heat regenerative system in the utility model embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing and by embodiment, the utility model is described in further detail, and following examples are to explanation of the present utility model and the utility model is not limited to following examples.
Embodiment.
Referring to Fig. 1 to Fig. 3, the hydrophobic structure of the power station low-pressure heater heat regenerative system in the present embodiment comprises low-pressure heater 1 at the corresponding levels, higher level's low-pressure heater 2, higher level's condensate water inlet pipeline 3, drain pipe at the corresponding levels 4, higher level's drain pipe 5, jet pump 6, threeway at the corresponding levels 7, is pumped valve 8, is pumped pipe 9, pumps pipe 10, pumps valve 11, condensate pipe threeway 12, mix induction tunnel 13, injecting valve 14 and higher level's threeway 15.
One end of the present embodiment higher level condensate water inlet pipeline 3 is connected on low-pressure heater 1 at the corresponding levels, the other end of this higher level's condensate water inlet pipeline 3 is connected on higher level's low-pressure heater 2, one end of drain pipe 4 at the corresponding levels is connected on low-pressure heater 1 at the corresponding levels, and one end of higher level's drain pipe 5 is connected on higher level's low-pressure heater 2.
Threeway at the corresponding levels 7 in the present embodiment is arranged on drain pipe 4 at the corresponding levels, is pumped pipe one end of 9 and is connected in threeway 7 at the corresponding levels, and this other end of being pumped pipe 9 is connected on jet pump 6, is pumped valve 8 and is arranged on and is pumped on pipe 9.
Condensate pipe threeway 12 in the present embodiment is arranged on higher level's condensate water inlet pipeline 3, pumps pipe one end of 10 and is connected in condensate pipe threeway 12, and this other end of pumping pipe 10 is connected on jet pump 6, pumps valve 11 and is arranged on and pumps on pipe 10.
Higher level's threeway 15 in the present embodiment is arranged on higher level's drain pipe 5, and the one end of mixing induction tunnel 13 is connected in higher level's threeway 15, and the other end of this mixing induction tunnel 13 is connected on jet pump 6, and injecting valve 14 is arranged on and mixes on induction tunnel 13.
Jet pump 6 in the present embodiment comprises pressure piping 61, nozzle 62, suction line 63, trunnion 64, anemostat 65 and discharge pipe 66, wherein, suction line 63, trunnion 64, anemostat 65 and discharge pipe 66 are connected successively, nozzle 62 is connected to one end of pressure piping 61, one end of pressure piping 61 and suction line 63 coordinate, and nozzle 62 is arranged in suction line 63.The axis of the axis of the axis of nozzle 62, trunnion 64, anemostat 65 and the axis overlaid of discharge pipe 66 in the present embodiment.
Hydrophobic structure in the present embodiment has been abandoned original drainage pump, adopts the jet pump 6 of no-rotary part, realizes the hydrophobic superior low-pressure heater 2 in low-pressure heater 1 at the corresponding levels is introduced, and concrete mode is: have certain pressure P
pthe outlet condensate water of low-pressure heater at the corresponding levels 1 as pumping liquid, introduce nozzle 62 through pressure pipeline 61, the outlet pressure of nozzle 62 is reduced to suction pressure P
s, pressure energy is converted to kinetic energy, at the jet that interruption-forming flow velocity is higher that goes out of nozzle 62, due to horizontal turbulent fluctuation and the diffusion of jet particle, carry out momentum-exchange and taken away with surrounding medium, make suction line 63 form vacuum, hydrophobic as being pumped liquid in low-pressure heater 1 at the corresponding levels, drunk up from suction line 63, and together enter in trunnion 64 in company with condensate water, in the interior two bursts of liquid generation momentum-exchanges of trunnion 64, pumping liquid passes to part energy to be pumped liquid, condensate water speed slows down, hydrophobic speed is accelerated, while arriving the end of trunnion 64, the speed of two strands of liquid reaches unanimity gradually, mixed process completes substantially, then enter anemostat 65, reduce at the interior flow velocity of anemostat 65, pressure rise, finally discharge from discharge pipe 66, enter in the drain port of higher level's low-pressure heater.
Hydrophobic structure in the present embodiment is applied in the low-pressure heater heat regenerative system of power station, taking 300MW unit as example, referring to Fig. 3, low-pressure heater is all without drain cooler, retain former cascaded drain pipeline and valve, before first electric gate valve of hydrophobic pipeline, add a threeway, draw this grade of hydrophobic process valve to this grade of hydrophobic entrance of jet pump, as being pumped liquid, install a threeway additional at this grade of heater outlet condensing water conduit, draw the pump liquid of a small gangs of condensate water as this grade of jet pump 6, in the interior two bursts of liquid generation momentum-exchanges of trunnion 64 of jet pump 6, pumping liquid passes to part energy to be pumped liquid, on the hydrophobic inlet pipeline of higher level's low-pressure heater 2, before valve, install threeway, valve and pipeline additional, jet pump 6 two strands of liquid are out incorporated into higher level's low-pressure heater 2 by higher level's drain pipe 5, the hydrophobic outlet of No. five low-pressure heaters 37 does not adopt the hydrophobic mode of jet pump, but by drainage pump 39 by the hydrophobic oxygen-eliminating device 30 that is transported to of all low-pressure heaters.When normal operation, valve-off 17 and valve 19, the hydrophobic normal hydrophobic pipeline of valve 17,18 and 19 of not walking of No. eight low-pressure heaters 31 is to condenser 33, pumped liquid inlet and be incorporated into the 8th grade of jet pump 34 by valve 32, open valve 26, introduce eight grades of jet pumps 34 of one condensate water to the and pump liquid inlet, mix after injection two strands of liquid and enter through valve 28 the hydrophobic entrance of No. seven heaters 35; In the time that accident is moved, valve-off 26 and 32, opens valve 17 and 19, recovers original draining system; The method of operation between No. seven low-pressure heaters 35 and No. six low-pressure heaters 36 is as the method for operation of No. eight low-pressure heaters 31; The hydrophobic outlet of No. five low-pressure heaters 37 is through valve 29, and valve-off 38 enters oxygen-eliminating device 30 after drainage pump 39 pressure-raisings.
In addition, it should be noted that, the specific embodiment described in this description, shape, institute's title of being named etc. of its parts and components can be different, and the above content described in this description is only to the explanation of the utility model structure example.All equivalence variation or simple change of doing according to described structure, feature and the principle of the utility model patent design, are included in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can make various amendments or supplements or adopt similar mode to substitute described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, all should belong to protection domain of the present utility model.
Claims (3)
1. the hydrophobic structure of a power station low-pressure heater heat regenerative system, comprise low-pressure heater at the corresponding levels, higher level's low-pressure heater, higher level's condensate water inlet pipeline, drain pipe at the corresponding levels and higher level's drain pipe, one end of described higher level's condensate water inlet pipeline is connected on low-pressure heater at the corresponding levels, the other end of this higher level's condensate water inlet pipeline is connected on higher level's low-pressure heater, one end of described drain pipe at the corresponding levels is connected on low-pressure heater at the corresponding levels, one end of described higher level's drain pipe is connected on higher level's low-pressure heater, it is characterized in that: also comprise jet pump, threeway at the corresponding levels, pumped valve, pumped pipe, pump pipe, pump valve, condensate pipe threeway, mix induction tunnel, injecting valve and higher level's threeway, described threeway at the corresponding levels is arranged on drain pipe at the corresponding levels, described one end of being pumped pipe is connected in threeway at the corresponding levels, this other end of being pumped pipe is connected on jet pump, the described valve of being pumped is arranged on and is pumped on pipe, described condensate pipe threeway is arranged on higher level's condensate water inlet pipeline, described in pump pipe one end be connected in condensate pipe threeway, this other end of pumping pipe is connected on jet pump, described in pump valve and be arranged on and pump on pipe, described higher level's threeway is arranged on higher level's drain pipe, and one end of described mixing induction tunnel is connected in higher level's threeway, and the other end of this mixing induction tunnel is connected on jet pump, and described injecting valve is arranged on and mixes on induction tunnel.
2. the hydrophobic structure of power station according to claim 1 low-pressure heater heat regenerative system, it is characterized in that: described jet pump comprises pressure piping, nozzle, suction line, trunnion, anemostat and discharge pipe, described suction line, trunnion, anemostat and discharge pipe are connected successively, described nozzle is connected to one end of pressure piping, one end of described pressure piping and suction line coordinate, and described nozzle is arranged in suction line.
3. the hydrophobic structure of power station according to claim 2 low-pressure heater heat regenerative system, is characterized in that: the axis of the axis of described nozzle, the axis of trunnion, anemostat and the axis overlaid of discharge pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320887203.8U CN203731374U (en) | 2013-12-31 | 2013-12-31 | Drain structure of low-pressure heater regenerative system of power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320887203.8U CN203731374U (en) | 2013-12-31 | 2013-12-31 | Drain structure of low-pressure heater regenerative system of power station |
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| Publication Number | Publication Date |
|---|---|
| CN203731374U true CN203731374U (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320887203.8U Expired - Lifetime CN203731374U (en) | 2013-12-31 | 2013-12-31 | Drain structure of low-pressure heater regenerative system of power station |
Country Status (1)
| Country | Link |
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| CN (1) | CN203731374U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322355A (en) * | 2016-08-30 | 2017-01-11 | 山东电力工程咨询院有限公司 | Power station multi-steam-source mixing type low-pressure heater and heating deoxygenation boiler feed water system thereof |
| CN107166368A (en) * | 2017-05-26 | 2017-09-15 | 国网山东省电力公司电力科学研究院 | A kind of low-pressure heater steam trap connection |
| CN109855082A (en) * | 2019-02-02 | 2019-06-07 | 华电电力科学研究院有限公司 | A kind of efficient low-pressure heater draining system and its application method |
-
2013
- 2013-12-31 CN CN201320887203.8U patent/CN203731374U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322355A (en) * | 2016-08-30 | 2017-01-11 | 山东电力工程咨询院有限公司 | Power station multi-steam-source mixing type low-pressure heater and heating deoxygenation boiler feed water system thereof |
| CN106322355B (en) * | 2016-08-30 | 2018-10-02 | 山东电力工程咨询院有限公司 | The hybrid low-pressure heater of power station multi-steam source and its heating deoxygenation feed water system of boiler |
| CN107166368A (en) * | 2017-05-26 | 2017-09-15 | 国网山东省电力公司电力科学研究院 | A kind of low-pressure heater steam trap connection |
| CN109855082A (en) * | 2019-02-02 | 2019-06-07 | 华电电力科学研究院有限公司 | A kind of efficient low-pressure heater draining system and its application method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |