CN205208540U - Backpressure unit deaeration in condenser ware system - Google Patents
Backpressure unit deaeration in condenser ware system Download PDFInfo
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- CN205208540U CN205208540U CN201520965033.XU CN201520965033U CN205208540U CN 205208540 U CN205208540 U CN 205208540U CN 201520965033 U CN201520965033 U CN 201520965033U CN 205208540 U CN205208540 U CN 205208540U
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Abstract
The utility model provides a backpressure unit deaeration in condenser ware system, it mainly includes: deaeration in condenser ware, condensate pump, deironing filter, bearing seal cooler, vacuum pump, the low pressure steam source links to each other with electric check valve one end as deoxidization steam, and the other end converges into and links to each other with the electrical control valve all the way, and the other end of electrical control valve links to each other with the check valve, the other end of check valve links to each other with the vacuum stop valve, and the vacuum stop valve links to each other with the deoxidization interface of deaeration in condenser ware, the one end of vacuum electric brake valve links to each other with the export of the condensate water of deaeration in condenser ware, and the other end links to each other with condensate pump's entrance side, and check valve one end links to each other with condensate pump's outlet side, and the other end links to each other with the electric brake valve, and the other end of electric brake valve links to each other with the deironing filter, and the one end and the bypass of electric check valve door ended the valve in electronic year and link to each other, and the other end links to each other with bearing seal cooler entry, the one end of electric check valve door links to each other with the export of bearing seal cooler, and the other end links to each other with bypass electric check valve's one end.
Description
Technical field
The utility model relates to a kind of back pressure unit vacuum dust cather system, belong to Gas-steam Combined Cycle technical field.
Background technology
China is in the process of readjusting the energy structure, greatly develop Gas-steam Combined Cycle technology, this technology is output electric energy not only, the low-quality waste heat after generating can also be used for heat supply, substantially increase energy utilization rate, there is good social efficiency, energy-saving benefit and environmental benefit.
In prior art, back pressure unit steam discharge, all for heat supply, does not have cold source energy, and therefore the thermal efficiency is high, but back pressure unit does not have condenser, need adopt two-stage deoxygenation when rate of water make-up is larger, and current back pressure unit many employings atmospheric type deaerator, for elementary deoxygenation.
Existing back pressure unit often adopts atmospheric type deaerator, and after thermal de-aeration, boiler feed water temperature reaches 104 DEG C, needs superheated steam to heat simultaneously, causes the waste of the energy.
Summary of the invention
The purpose of this utility model be to overcome existing back pressure unit because of rate of water make-up large, cannot the problem such as single-stage deoxygenation, a kind of structure is provided to form rationally, easy to install and use, the inflow temperature of back pressure unit and the exhaust gas temperature of boiler can be reduced, thus improve back pressure unit vacuum dust cather system and the condensate water round-robin method of combined cycle efficiency.
The purpose of this utility model has been come by following technical solution, a kind of back pressure unit vacuum dust cather system, it mainly comprises: vacuum dust cather, condensate pump, deironing filter, shaft sealing cooler, vavuum pump, low-pressure steam source is connected with electric check valve one end as deoxygenation steam, the other end converges into a road and is connected with electric control valve, the other end of electric control valve is connected with check-valves, the other end of described check-valves is connected with vaccum stop valve, and vaccum stop valve is connected with the deoxygenation interface of vacuum dust cather; One end of vacuum electric gate valve exports with the condensate water of vacuum dust cather and is connected, the other end is connected with the entrance side of condensate pump, check-valves one end is connected with the outlet side of condensate pump, the other end is connected with electric gate valve, the other end of electric gate valve is connected with deironing filter, one end and the bypass of electric check valve door stop valve for electronic year and are connected, and the other end is connected with shaft sealing cooler entrance; One end of electric check valve door is connected with the outlet of shaft sealing cooler, the other end is connected with one end of bypass electric check valve, the described bypass electric check valve other end is connected with electric check valve, this electric check valve one end is connected with electric check valve one end, the other end is connected with the entrance of condensed water in boiler, and makes condensate water form circulation from vacuum dust cather to boiler.
The outlet of shaft sealing cooler described in the utility model is extracted a road recirculating line out through electric check valve and is connected with gate valve one end, this gate valve other end with often close pneumatic control valve and be connected, the other end of this pneumatic control valve is connected with vaccum stop valve, after a road is converged in the other end of vaccum stop valve and one end of Motorized vacuum stop valve, be connected with the recirculation interface of vacuum dust cather, condensate water is recycled;
Described vavuum pump is connected with one end of vaccum stop valve, the other end of this vaccum stop valve converges into a road and is connected with a wherein vaccum stop valve, the other end of another vaccum stop valve is connected with the vacuum orifice of vacuum dust cather, and by the operation of vavuum pump, vacuum dust cather vacuum is run; Described vavuum pump has two, wherein operation, one for subsequent use.
A kind of condensate water round-robin method using above-mentioned back pressure unit vacuum dust cather system, described condensate water round-robin method is: when normally running, chemical demineralizing water in vacuum dust cather through low-pressure steam source or select saturated vapor and superheated steam to carry out thermal de-aeration, saturation temperature 41.5 DEG C under heating demineralized water to 8kPa, condensate water after deoxygenation is exported to condensate pump through the condensate water of vacuum dust cather, after condensate pump boosting, enter deironing filter precision processing, carry out heat exchange through shaft sealing cooler and gland steam again, permanent set water squeezes into boiler;
When unit underload condensing water flow is less, can electric check valve be closed, open pneumatic control valve simultaneously, make condensate water be back to vacuum dust cather, ensure that shaft sealing cooler has enough cooling water inflows, and prevent condensate pump from when flow is too small, cavitation occurring.
Vacuum dust cather described in the utility model also can receive the backwater from equipment, at least one water source during turbine proper water drain, pipeline are hydrophobic, to maintain the intrasystem Steam-water Flow of back pressure unit vacuum dust cather and heat balance.
The beneficial effects of the utility model are mainly reflected in the following aspects:
First back pressure unit vacuum dust cather, as elementary deaeration plant, reduces waste heat boiler inflow temperature to 41.5 DEG C, improves 0.2% than adopting the generatine set heat efficiency of atmospheric type deaerator;
The second, vacuum dust cather deoxygenation steam can adopt low parameter steam, can save valuable middle pressure steam resource, improves generatine set heat efficiency; 3rd, hydrophobic, backwater that the recyclable therrmodynamic system of vacuum dust cather produces, utilize the thermal balance of container self to regulate.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of back pressure unit vacuum dust cather system described in the utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in detail: shown in Fig. 1, a kind of back pressure unit vacuum dust cather system described in the utility model, it mainly comprises: vacuum dust cather 1, condensate pump 21, 22, deironing filter 3, shaft sealing cooler 4, vavuum pump 51, 52, low-pressure steam source is as deoxygenation steam and electric check valve 11, 12 one end are connected, the other end converges into a road and is connected with electric control valve 13, the other end of electric control valve 13 is connected with check-valves 14, the other end of described check-valves 14 is connected with vaccum stop valve 15, vaccum stop valve 15 is connected with the deoxygenation interface of vacuum dust cather 1, one end of vacuum electric gate valve 211,221 exports with the condensate water of vacuum dust cather 1 and is connected, the other end is connected with the entrance side of condensate pump 21,22, check-valves 212,222 one end is connected with the outlet side of condensate pump 21,22, the other end is connected with electric gate valve 213,222, the other end of electric gate valve 213,222 is connected with deironing filter 3, one end and the bypass of electric check valve door 41 stop valve 42 for electronic year and are connected, and the other end is connected with shaft sealing cooler 4 entrance, one end of electric check valve door 43 is connected with the outlet of shaft sealing cooler 4, the other end is connected with one end of bypass electric check valve 42, described bypass electric check valve 42 other end is connected with electric check valve 410, this electric check valve 410 one end is connected with electric check valve 43 one end, the other end is connected with the entrance of condensed water in boiler, and makes condensate water form circulation from vacuum dust cather 1 to boiler.
Shown in figure, the outlet of shaft sealing cooler 4 described in the utility model is extracted a road recirculating line out through electric check valve 43 and is connected with gate valve 44 one end, this gate valve 44 other end with often close pneumatic control valve 45 and be connected, the other end of this pneumatic control valve 45 is connected with vaccum stop valve 46, after a road is converged in the other end of vaccum stop valve 46 and one end of Motorized vacuum stop valve 47, be connected with the recirculation interface of vacuum dust cather 1, condensate water is recycled;
Described vavuum pump 51,52 is connected with one end of vaccum stop valve 511,521, the other end of this vaccum stop valve 511,521 converges into a road and is connected with a wherein vaccum stop valve 512, the other end of another vaccum stop valve 512 is connected with the vacuum orifice of vacuum dust cather 1, and by the operation of vavuum pump 51,52, vacuum dust cather vacuum is run; Described vavuum pump 51,52 has two, wherein operation, one for subsequent use.
A kind of condensate water round-robin method using above-mentioned back pressure unit vacuum dust cather system, described condensate water round-robin method is: when normally running, chemical demineralizing water in vacuum dust cather through low-pressure steam source or select saturated vapor and superheated steam to carry out thermal de-aeration, saturation temperature 41.5 DEG C under heating demineralized water to 8kPa, condensate water after deoxygenation is exported to condensate pump through the condensate water of vacuum dust cather, after condensate pump boosting, enter deironing filter precision processing, carry out heat exchange through shaft sealing cooler and gland steam again, permanent set water squeezes into boiler;
When unit underload condensing water flow is less, electric check valve 410 can be closed, open pneumatic control valve 45 simultaneously, make condensate water be back to vacuum dust cather, ensure that shaft sealing cooler has enough cooling water inflows, and prevent condensate pump from when flow is too small, cavitation occurring.Described vacuum dust cather also can receive the backwater from equipment, at least one water source during turbine proper water drain, pipeline are hydrophobic, to maintain the intrasystem Steam-water Flow of back pressure unit vacuum dust cather and heat balance.
Claims (2)
1.
oneplant back pressure unit vacuum dust cather system, it mainly comprises: vacuum dust cather (1), condensate pump (21, 22), deironing filter (3), shaft sealing cooler (4), vavuum pump (51, 52), it is characterized in that: low-pressure steam source is as deoxygenation steam and electric check valve (11, 12) one end is connected, the other end converges into a road and is connected with electric control valve (13), the other end of electric control valve (13) is connected with check-valves (14), the other end of described check-valves (14) is connected with vaccum stop valve (15), vaccum stop valve (15) is connected with the deoxygenation interface of vacuum dust cather (1), one end of vacuum electric gate valve (211,221) exports with the condensate water of vacuum dust cather (1) and is connected, the other end is connected with the entrance side of condensate pump (21,22), check-valves (212,222) one end is connected with the outlet side of condensate pump (21,22), the other end is connected with electric gate valve (213,222), the other end of electric gate valve (213,222) is connected with deironing filter (3), one end and the bypass of electric check valve door (41) stop valve (42) for electronic year and are connected, and the other end is connected with shaft sealing cooler (4) entrance, one end of electric check valve door (43) is connected with the outlet of shaft sealing cooler (4), the other end is connected with the one end of bypass electric check valve (42), described bypass electric check valve (42) other end is connected with electric check valve (410), this electric check valve (410) one end is connected with electric check valve (43) one end, the other end is connected with the entrance of condensed water in boiler, and makes condensate water form circulation from vacuum dust cather (1) to boiler.
2. back pressure unit vacuum dust cather system according to claim 1, it is characterized in that the outlet of described shaft sealing cooler (4) is extracted a road recirculating line out through electric check valve (43) and is connected with gate valve (44) one end, this gate valve (44) other end with often close pneumatic control valve (45) and be connected, the other end of this pneumatic control valve (45) is connected with vaccum stop valve (46), after a road is converged in the other end of vaccum stop valve (46) and one end of Motorized vacuum stop valve (47), be connected with the recirculation interface of vacuum dust cather (1), condensate water is recycled;
Described vavuum pump (51,52) is connected with one end of vaccum stop valve (511,521), the other end of this vaccum stop valve (511,521) converges into a road and is connected with a wherein vaccum stop valve (512), the other end of another vaccum stop valve (512) is connected with the vacuum orifice of vacuum dust cather (1), and by the operation of vavuum pump (51,52), vacuum dust cather vacuum is run; Described vavuum pump (51,52) has two, wherein operation, one for subsequent use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520965033.XU CN205208540U (en) | 2015-11-26 | 2015-11-26 | Backpressure unit deaeration in condenser ware system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520965033.XU CN205208540U (en) | 2015-11-26 | 2015-11-26 | Backpressure unit deaeration in condenser ware system |
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| CN205208540U true CN205208540U (en) | 2016-05-04 |
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| CN201520965033.XU Active CN205208540U (en) | 2015-11-26 | 2015-11-26 | Backpressure unit deaeration in condenser ware system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910092A (en) * | 2015-11-26 | 2016-08-31 | 中国能源建设集团浙江省电力设计院有限公司 | Back pressure turbine vacuum deaerator system and condensation water circulation method |
| CN110207014A (en) * | 2019-06-05 | 2019-09-06 | 大唐郓城发电有限公司 | A kind of protection system and operating method preventing condensate pump entrance superpressure |
-
2015
- 2015-11-26 CN CN201520965033.XU patent/CN205208540U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910092A (en) * | 2015-11-26 | 2016-08-31 | 中国能源建设集团浙江省电力设计院有限公司 | Back pressure turbine vacuum deaerator system and condensation water circulation method |
| CN105910092B (en) * | 2015-11-26 | 2018-06-12 | 中国能源建设集团浙江省电力设计院有限公司 | A kind of back pressure unit vacuum dust cather system and condensation water round-robin method |
| CN110207014A (en) * | 2019-06-05 | 2019-09-06 | 大唐郓城发电有限公司 | A kind of protection system and operating method preventing condensate pump entrance superpressure |
| CN110207014B (en) * | 2019-06-05 | 2020-09-01 | 大唐郓城发电有限公司 | Protection system for preventing overpressure at inlet of condensate pump and operation method |
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