CN205560705U - Steam desuperheater - Google Patents
Steam desuperheater Download PDFInfo
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- CN205560705U CN205560705U CN201620381704.2U CN201620381704U CN205560705U CN 205560705 U CN205560705 U CN 205560705U CN 201620381704 U CN201620381704 U CN 201620381704U CN 205560705 U CN205560705 U CN 205560705U
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- steam
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- water
- attemperator
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 230000008676 import Effects 0.000 claims abstract description 38
- 239000007921 spray Substances 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 5
- 238000010025 steaming Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000009692 water atomization Methods 0.000 description 2
- 238000003556 assay Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004899 motility Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model provides a steam desuperheater. This steam desuperheater includes: desuperrheater, desuperrheater have steam inlet, steam outlet and subtract warm water import, the last admission pipe that is connected with of steam inlet, the last steam pipe that is connected with out of steam outlet, heat exchanger, heat exchanger have first import and the first export and the second import and the second export of intercommunication each other of mutual intercommunication, first import and admission union coupling, and the second import is connected with steam outlet through going out the steam pipe. This steam desuperheater can ensure steam purity under the condition that the steam superheating degree enough hangs down.
Description
Technical field
This utility model relates to steam thermal system field, particularly relates to a kind of Vaporized temperature-reducing device.
Background technology
Use superheated steam conducts heat, and needs that vapor (steam) temperature is down to saturation temperature and could discharge saturated
Enthalpy, this is equivalent to decrease effective heat transfer area, thus is unfavorable for heat transfer, therefore is utilizing steam to pass
During heat, it may be desirable to use attemperator so that attemperator, at industrial circle, especially flows
Journey industry is used widely.
Attemperator has multiple, such as spray attemperator, water-bath type attemperator etc..Wherein, water spray
Formula attemperator is limited because of structure, causes the indirect steam degree of superheat the lowest, and desuperheating water atomizing effect is the poorest,
Indirect steam band water is the most serious, quality is the poorest, is more easily formed film condensation at heat exchanger steam side,
Heat-transfer effect is the poorest；Therefore, spray attemperator typically requires the degree of superheat of more than 10 DEG C, has
Some spray attemperators even require the degree of superheat of about 50 DEG C.This makes steam quality and steaming
The vapour degree of superheat is a pair insurmountable contradiction.
Water-bath type attemperator solves the problem of the degree of superheat, but structure is the most complicated, solve big flow,
High pressure (more than 1.5Mpa) is also had any problem.
Utility model content
Embodiment of the present utility model provides a kind of Vaporized temperature-reducing device, wet with steam after solving desuperheat
Spend high problem.
For reaching above-mentioned purpose, embodiment of the present utility model provides a kind of Vaporized temperature-reducing device, its
Including: attemperator, attemperator has steam inlet, steam (vapor) outlet and desuperheating water import, and steam enters
On mouth, connection has steam inlet pipe, and steam (vapor) outlet connects steam outlet pipe；Heat exchanger, heat exchanger has phase
The first intercommunicated import and the first outlet and the second import being interconnected and second export,
First import is connected with steam inlet pipe, and the second import is connected with steam (vapor) outlet by steam outlet pipe.
Further, the connecting line between the first import and steam inlet pipe is provided with steam flow to adjust
Joint valve；And/or, desuperheating water import connects and has desuperheat water pipe, desuperheat water pipe is provided with water
Adjustable valve.
Further, Vaporized temperature-reducing device also includes controller and for measuring the steam of steam (vapor) outlet
The detector of temperature, controller is connected with detector, and with steam flow control valve and/or water
Adjustable valve connects.
Further, detector is thermocouple.
Further, steam inlet pipe being provided with injector, injector is arranged on the first import and enters vapour
Between junction point and the attemperator of pipe, the first outlet is connected with steam inlet pipe by injector.
Further, steam inlet pipe is provided with the first stop valve for controlling steam inlet pipe break-make, the
One stop valve is arranged between the first import and the junction point of steam inlet pipe and injector.
Further, Vaporized temperature-reducing device also includes steam-water separator, and steam-water separator is arranged on steaming
Between vapor outlet and the second import.
Further, attemperator is spray attemperator；And/or, heat exchanger is vapour vapour heat exchange
Device.
Further, desuperheat water pipe is additionally provided with check-valves, check-valves be positioned at water regulating valve and
Between desuperheating water import.
Further, the Pressure gauge of pressure attemperator being additionally provided with in measuring attemperator.
The Vaporized temperature-reducing device primary steam of embodiment of the present utility model and indirect steam are in heat exchange
Device carries out heat exchange, and utilize primary steam crosses contained aqueous water in heat content heating evaporation indirect steam
Divide, promote the mass dryness fraction of indirect steam, it is ensured that the quality of indirect steam, simultaneously without limiting secondary steaming
The degree of superheat of vapour.
Accompanying drawing explanation
Fig. 1 is the structural representation of the Vaporized temperature-reducing device of embodiment of the present utility model；
Fig. 2 is the knot of the Vaporized temperature-reducing device with steam-water separator of embodiment of the present utility model
Structure schematic diagram.
Description of reference numerals:
1, attemperator；2, steam inlet pipe；3, steam outlet pipe；4, heat exchanger；5, steam flow is adjusted
Joint valve；6, desuperheat water pipe；7, water regulating valve；8, controller；9, detector；10, draw
Emitter；11, the first stop valve；12, check-valves；13, choke valve；14, the second stop valve；
15, relief valve；16, Pressure gauge；17, steam-water separator.
Detailed description of the invention
Below in conjunction with the accompanying drawings the Vaporized temperature-reducing device of this utility model embodiment is described in detail.
As it is shown in figure 1, according to embodiment of the present utility model, Vaporized temperature-reducing device includes attemperator
1 and heat exchanger 4.Attemperator 1 has steam inlet, steam (vapor) outlet and desuperheating water import, steam
Connecting in import and have steam inlet pipe 2, steam (vapor) outlet connects steam outlet pipe 3.Heat exchanger 4 has phase
The first intercommunicated import and the first outlet and the second import being interconnected and second export,
First import is connected with steam inlet pipe 2, and the second import is connected with steam (vapor) outlet by steam outlet pipe 3.
Attemperator 1 is for carrying out desuperheat to steam.The steam inlet pipe 2 once mistake before introducing desuperheat
Vapours, the steam outlet pipe 3 indirect steam after drawing cooling, enter attemperator from steam inlet pipe 2
1 be dry superheated steam, this superheated steam, should by becoming indirect steam after attemperator 1 desuperheat
Indirect steam enters steam outlet pipe 3 from steam (vapor) outlet.Primary steam when by attemperator 1 because of desuperheat
Water atomization is incomplete, can carry certain aqueous water secretly, it is therefore desirable to flow from attemperator 1 in steam
The steam entered in steam outlet pipe 3 is dried.Heat exchanger 4 is for doing wet indirect steam
Dry, its principle is to make a superheated steam and indirect steam heat exchange in heat exchanger 4, utilizes once
Contained liquid moisture in the heat content heating evaporation indirect steam excessively of superheated steam, to promote indirect steam
Aridity.First import of heat exchanger 4 and the first outlet realize the introducing of a superheated steam,
Second import of heat exchanger 4 and the second outlet realize the introducing of indirect steam.
In the present embodiment, steam inlet pipe 2 arranges branch road and is connected with heat exchanger 4, in the process of use
In whether it can be dried according to the humid control of indirect steam.
Preferably, the connecting line between the first import and steam inlet pipe 2 is arranged steam flow to adjust
Joint valve 5.Utilize steam flow control valve 5 can control to enter a superheated steam of heat exchanger 4
Amount, and then control heat exchange amount, it is achieved to drying effect and the control of the indirect steam degree of superheat.
Preferably due to superheated steam steam pressure after by heat exchanger 4 is declined slightly,
Properly functioning in order to ensure system, steam inlet pipe 2 is provided with injector 10, injector 10 is arranged
Between the first import and the junction point of steam inlet pipe 2 and attemperator 1, injector is passed through in the first outlet
10 are connected with steam inlet pipe 2.The steam of superheated steam introducing attemperator 1 is entered by injector 10
Mouthful.Injector 10 produces low-pressure area by receiving expander in throat, it is ensured that after heat exchanger 4
Secondary steam enters attemperator 1.
In order to improve the suitability and the motility of Vaporized temperature-reducing device further, at steam inlet pipe 2
On be provided with the first stop valve 11, the first stop valve 11 is arranged on the first import and steam inlet pipe 2
Between junction point and injector 10, it is for controlling the break-make of steam inlet pipe 2, namely it can be controlled
The source of superheated steam of attemperator 1 processed, as by steam inlet pipe 2 and heat exchanger 4 the most only
By heat exchanger 4.
In the present embodiment, attemperator 1 is spray attemperator.It is by a superheated steam
In spray into desuperheating water and realize desuperheat.Certainly, in other embodiments, attemperator 1 can be other
The attemperator of type, such as water-bath type attemperator etc..
Connecting in the desuperheating water import of spray attemperator has desuperheat water pipe 6, desuperheat water pipe 6 to be used for
Introduce desuperheating water.Preferably, desuperheat water pipe 6 is provided with water regulating valve 7, so as to root
Spray water flux is controlled according to needs.
Preferably, in order to improve the suitability and the reliability of Vaporized temperature-reducing device, at desuperheat water pipe 6
On be provided with check-valves 12, it is possible to prevent steam to pour in down a chimney.Check-valves 12 is arranged on desuperheating water and enters
Between mouth and water regulating valve 7.
The second stop valve 14 and choke valve 13 it is additionally provided with on desuperheat water pipe 6.Second stop valve 14
For controlling the break-make of desuperheat water pipe 6.Choke valve 13 can regulate the pressure of desuperheating water.
In order to improve the safety of Vaporized temperature-reducing device, attemperator 1 is additionally provided with relief valve 15,
Relief valve 15 guarantees that attemperator failure conditions transfers waste steam, it is ensured that indirect steam vapour unit
Safety and stability.Monitor for the ease of staff, attemperator 1 is provided with for reading
The Pressure gauge 16 of number.
Preferably, for the ease of controlling spray water flux and the amount of a superheated steam entrance heat exchanger 4,
Detector 9 it is provided with on attemperator 1.Detector 9 is for measuring the steam (vapor) outlet of attemperator 1
Vapor (steam) temperature.
Vaporized temperature-reducing device also includes controller 8, controller 8 respectively with detector 9, steam stream
Adjustable valve 5 and/or water regulating valve 7 connect, and control to steam according to the testing result of detector 9
Steam flow adjustable valve 5 and/or the aperture of water regulating valve 7.
Such as, desuperheating water is then controlled when the vapor (steam) temperature that steam (vapor) outlet measured by detector 9 is higher
Amount reduces.Vice versa.
In the present embodiment, detector 9 is thermocouple, and the temperature signal of thermocouple detection is transferred to
Controller 8 flow for superheated steam entrance heat exchanger 4 of control.Controller 8 is number
Word control system (DCS controller).By arranging the temperature value of indirect steam in controller 8
And by the temperature value arranged and the comparison of thermocouple assay value, it is automatically adjusted the overheated of indirect steam
Degree.
Preferably, as in figure 2 it is shown, Vaporized temperature-reducing device also includes steam-water separator 17, soda pop is divided
It is arranged between steam (vapor) outlet and the second import from device 17.Steam-water separator 17 is used for preliminary to two
Secondary steam dehumidifies, and reduces the amount of the aqueous water that indirect steam is carried secretly, to reduce heat exchanger 4
Thermic load.Steam-water separator 17 can be isolated and excluded the liquid condensation water carried secretly in indirect steam
With vaporific condensed water, elimination factor more than 90%.
Being additionally provided with hydrophobic component on steam-water separator 17, this hydrophobic component is for dividing soda pop
The water separated in device 17 is drawn, it is ensured that steam-water separator 17 continuous firing.It is provided with soda pop to divide
Vaporized temperature-reducing device from device 17 can use under the operating mode that the indirect steam degree of superheat is little, especially may be used
Use under the operating mode needing saturated vapor.
In the present embodiment, heat exchanger 4 is vapour vapour heat exchanger (also can claim vapour vapour dividing wall type heat exchanger).
Vapour vapour heat exchanger utilizes the heat content heating humidity of crossing of a superheated steam to be less than the wet secondary of 10%
Steam, obtains dry saturated steam or the dry superheated steam of low overheat.
Vaporized temperature-reducing device in the present embodiment can by arranging steam-water separator and vapour vapour heat exchanger
With on the premise of ensureing steam 100% mass dryness fraction, the degree of superheat making steam can be according to the needs of user
Arbitrarily adjust with by the distance of vapour point with attemperator 1；And the work of this Vaporized temperature-reducing device do not steamed
Steam flow amount and the restriction of steam pressure.
The work process of this Vaporized temperature-reducing device is: superheated steam of a part is through the first cut-off
Valve 11, injector 10 enter spray attemperator, become indirect steam through spray attemperator
And export entrance heat exchanger 4.Superheated steam of a part enters through steam flow control valve 5
In vapour vapour heat exchanger, a superheated steam and indirect steam heat exchange in vapour vapour heat exchanger, by one
Contained liquid moisture in the heat content heating evaporation indirect steam excessively of secondary superheated steam, to promote secondary steaming
The quality of vapour.The reduction of steam superheat and the raising of steam quality are conducive to heat exchanger dropwise condensation
Formation, both reduced heat transfer resistance, added again effective heat transfer area.Detected by thermocouple
The temperature of the indirect steam of the steam (vapor) outlet of attemperator 1, and then to flowing into vapour vapour heat exchanger once
The flow of steam and the water yield of inflow attemperator 1 are controlled.Steam-water separator is isolated and excluded two
The liquid condensation water carried secretly in secondary steam and vaporific condensed water.Vapour vapour heat exchanger utilizes primary steam
Cross the heat content heating humidity wet indirect steam less than 10%.
Vaporized temperature-reducing device of the present utility model has the effect that
The contradiction between steam quality and steam superheat is solved by this Vaporized temperature-reducing device.Steam
The reduction of the vapour degree of superheat and the formation improving beneficially heat exchanger dropwise condensation of steam quality, both dropped
Low heat transfer resistance, adds again effective heat transfer area.Less heat exchange area and size can be used
Heat exchanger, save material.Avoid the water attack within the vapor heat exchanger that water entrained by steam causes to break
Bad.
The above, detailed description of the invention the most of the present utility model, but protection of the present utility model
Scope is not limited thereto, and any those familiar with the art discloses at this utility model
Technical scope in, can readily occur in change or replace, all should contain in protection of the present utility model
Within the scope of.Therefore, protection domain of the present utility model should be with described scope of the claims
It is as the criterion.
Claims (10)
1. a Vaporized temperature-reducing device, it is characterised in that including:
Attemperator (1), described attemperator (1) has steam inlet, steam (vapor) outlet and desuperheat
Water inlet, described steam inlet connects and has steam inlet pipe (2), and described steam (vapor) outlet connects to be had
Steam outlet pipe (3)；
Heat exchanger (4), described heat exchanger (4) has the first import and first being interconnected
Outlet and the second import of being interconnected and the second outlet, described first import with described enter vapour
Pipe (2) connects, and described second import is connected with described steam (vapor) outlet by described steam outlet pipe (3).
Vaporized temperature-reducing device the most according to claim 1, it is characterised in that described first enters
It is provided with steam flow control valve (5) on connecting line between mouth and described steam inlet pipe (2)；
And/or, described desuperheating water import connects and has desuperheat water pipe (6), described desuperheat water pipe (6)
On be provided with water regulating valve (7).
Vaporized temperature-reducing device the most according to claim 2, it is characterised in that described steam subtracts
Temperature device also includes controller (8) and for measuring the detection of the vapor (steam) temperature of described steam (vapor) outlet
Device (9), described controller (8) is connected with described detector (9), and with described steam stream
Adjustable valve (5) and/or described water regulating valve (7) connect.
Vaporized temperature-reducing device the most according to claim 3, it is characterised in that described detector
(9) it is thermocouple.
5. according to the Vaporized temperature-reducing device according to any one of claim 1-4, it is characterised in that
Being provided with injector (10) on described steam inlet pipe (2), described injector (10) is arranged on institute
State between the first import and the junction point of described steam inlet pipe (2) and described attemperator (1), described
First outlet is connected with described steam inlet pipe (2) by described injector (10).
Vaporized temperature-reducing device the most according to claim 5, it is characterised in that described steam inlet pipe
(2) the first stop valve (11) for controlling described steam inlet pipe (2) break-make, institute it are provided with on
State the first stop valve (11) and be arranged on described first import and the junction point of described steam inlet pipe (2)
And between described injector (10).
Vaporized temperature-reducing device the most according to claim 6, it is characterised in that described steam subtracts
Temperature device also includes that steam-water separator (17), described steam-water separator (17) are arranged on described steaming
Between vapor outlet and described second import.
Vaporized temperature-reducing device the most according to claim 7, it is characterised in that described attemperator
(1) it is spray attemperator；And/or, described heat exchanger (4) is vapour vapour heat exchanger.
Vaporized temperature-reducing device the most according to claim 2, it is characterised in that described desuperheating water
Being additionally provided with check-valves (12) on pipe (6), described check-valves (12) is positioned at the described water yield and adjusts
Between joint valve (7) and described desuperheating water import.
Vaporized temperature-reducing device the most according to claim 1, it is characterised in that described desuperheat
The Pressure gauge (16) of the pressure being additionally provided with on device (1) in measuring described attemperator (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620381704.2U CN205560705U (en) | 2016-04-28 | 2016-04-28 | Steam desuperheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620381704.2U CN205560705U (en) | 2016-04-28 | 2016-04-28 | Steam desuperheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205560705U true CN205560705U (en) | 2016-09-07 |
Family
ID=56804356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620381704.2U Active CN205560705U (en) | 2016-04-28 | 2016-04-28 | Steam desuperheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205560705U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107166355A (en) * | 2017-07-07 | 2017-09-15 | 宁波健益检测科技有限公司 | A kind of moist steam self-heating water scavenging system |
| CN107842844A (en) * | 2017-11-27 | 2018-03-27 | 华电电力科学研究院 | A kind of efficient temperature reducing system of superheated steam and intelligent control method |
| CN109140421A (en) * | 2018-09-10 | 2019-01-04 | 广东粤电靖海发电有限公司 | A kind of Thermal generation unit steam reheat system |
-
2016
- 2016-04-28 CN CN201620381704.2U patent/CN205560705U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107166355A (en) * | 2017-07-07 | 2017-09-15 | 宁波健益检测科技有限公司 | A kind of moist steam self-heating water scavenging system |
| CN107842844A (en) * | 2017-11-27 | 2018-03-27 | 华电电力科学研究院 | A kind of efficient temperature reducing system of superheated steam and intelligent control method |
| CN107842844B (en) * | 2017-11-27 | 2024-01-05 | 华电电力科学研究院有限公司 | Superheated steam efficient temperature reduction system and intelligent control method |
| CN109140421A (en) * | 2018-09-10 | 2019-01-04 | 广东粤电靖海发电有限公司 | A kind of Thermal generation unit steam reheat system |
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