CN203906301U - Condensate pump for turboset and condensate system - Google Patents
Condensate pump for turboset and condensate system Download PDFInfo
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- CN203906301U CN203906301U CN201420300453.1U CN201420300453U CN203906301U CN 203906301 U CN203906301 U CN 203906301U CN 201420300453 U CN201420300453 U CN 201420300453U CN 203906301 U CN203906301 U CN 203906301U
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Abstract
The utility model provides a condensate pump for a turboset and a condensate system. The outlet end of a pump shaft of the condensate pump is provided with a supercharging stage device. The condensate system comprises a condenser hot well and the condensate pump which is communicated with the condenser hot well. An outlet of the supercharging stage device is connected with a feed pump seal water system and a desuperheater water spray system. A main outlet of the condensate pump is connected with a low-pressure regenerative system through a condensate polishing device, and an inlet or an outlet of the low-pressure regenerative system is provided with a deaerator level control valve. The condensate pump for the turboset and the condensate system can eliminate throttling losses of a condensate adjusting valve thoroughly, power consumption of the condensate pump is reduced to the greatest extent, and meanwhile the turboset runs normally.
Description
Technical field
The utility model relates to a kind of condensate pump and condensate system, is specifically related to condensate pump and condensate system for a kind of steam turbine set.
Background technique
Turbo-generator Set is that the water of condensation that condensation is got off to vapour condenser is boosted by the major function of condensate pump, overcome the resistance of condensed water precision processing system, low pressure heat regenerative system, condensate system pipeline, deaerator level control valve, finally water of condensation is squeezed into oxygen-eliminating device.General condensate pump only has an outlet, in main condensate pipe-line system after condensate pump outlet, draw part water of condensation for other users (Sealing Water for Feedwater Pump, desuperheater spray etc.), remainder enters oxygen-eliminating device through low pressure heat regenerative system, deaerator level control valve etc. again.
The user such as Sealing Water for Feedwater Pump, desuperheater spray has minimum requirement to the pressure of water of condensation, and when condensate pump outlet pressure requires lower than these minimums, feed water pump sealing system, desuperheater spray etc. just can not be worked, and affect steam turbine set Security.In order to ensure steam turbine set safe operation, actual operation is exactly, when steam turbine set load reduction, deaerator level control valve retains certain restriction loss, guarantees that delivery side of pump pressure is not less than the minimum pressure of feed water pump sealing system, desuperheater spray demand.When this just causes steam turbine set peaking operation, deaerator level control valve restriction loss exists always, cannot bring into play the characteristics of energy saving of Condensate Pump Frequency Conversion speed governing completely, has increased the power consumption of condensate pump.
In order to eliminate the restriction loss of the deaerator level control valve under current operating mode, reduce the power consumption of condensate pump, some researchers have proposed: after condensate pump outlet, before the user such as Sealing Water for Feedwater Pump, install booster pump additional, both guaranteed the safe operation of seal water system, desuperheater spray system etc., eliminated again the restriction loss of deaerator level control valve, but because this scheme has increased by two cover rotating machinerys (two suction booster one operations one are standby), steam turbine set operational reliability reduces; Booster pump is poor to the adaptability of steam turbine set load variations, and is difficult for regulation and control; Before part Study personnel propose that Sealing Water for Feedwater Pump, desuperheater spray etc. is connected on to condensed water precision processing system in addition, play the effect (amount reducing is equivalent to condensed water precision processing system resistance) that reduces deaerator level control valve restriction loss, but thoroughly do not eliminated the restriction loss of deaerator level control valve.
In sum, current condensate pump is because will meet the demand of equipment component safe handling, and condensate pump outlet pressure has lower bound restriction, cannot give play to the power savings advantages of frequency control of motor speed completely.And existing technological means does not fundamentally address this problem, or may cause that unit operation reliability reduces.
Model utility content
The purpose of this utility model is condensate pump and the condensate system for steam turbine set that a kind of restriction loss of thorough elimination deaerator level control valve are provided and do not reduce steam turbine set operational reliability.
In order to achieve the above object, the utility model steam turbine set condensate pump, the pump shaft outlet end of described condensate pump is provided with the booster stage that meets Sealing Water for Feedwater Pump system and desuperheater spray system minimum pressure, and booster stage is connected with the booster stage outlet being arranged on outer cylinder body with the inner barrel of condensate pump respectively.
Described condensate pump comprises the outer cylinder body with condensate pump entrance and condensate pump primary outlet, in outer cylinder body, be provided with the inner barrel being communicated with outer cylinder body, in inner barrel, be provided with the impeller being fixed on pump shaft, and inner barrel is connected with condensate pump outlet, booster stage on pump shaft outlet end is connected with inner barrel, and booster stage outlet is arranged on outer cylinder body.
The condensate system of condensate pump for a kind of steam turbine set based on described, the steam turbine set condensate pump that comprises condenser hotwell and be connected with condenser hotwell, steam turbine set is connected with desuperheater spray system with Sealing Water for Feedwater Pump system respectively with the booster stage outlet of condensate pump; Condensate pump primary outlet is connected with low pressure heat regenerative system through precision processing device of condensation water, and the entrance of low pressure heat regenerative system or outlet port are provided with deaerator level control valve.
Described condensate pump primary outlet is divided into two-way, and first distribution pipeline of leading up to is connected with booster stage outlet, and another road first stop valve is connected with precision processing device of condensation water; Wherein, the first distribution pipeline is provided with booster stage minimum flow protection valve.
After described booster stage outlet is connected with the first distribution pipeline, be connected with the second stop valve, the outlet of the second stop valve is connected with desuperheater spray system with Sealing Water for Feedwater Pump system respectively.
Between the outlet of the second described stop valve and Sealing Water for Feedwater Pump system, be provided with the 3rd stop valve.
The outlet of described precision processing device of condensation water is also connected with the entrance of desuperheater spray system by the second distribution pipeline, and on the second distribution pipeline, is also provided with the 5th stop valve.
The outlet of the second described stop valve is connected by the 4th stop valve and is connected with desuperheater spray system with the second distribution pipeline.
Compared with prior art, the beneficial effects of the utility model are:
The utility model is provided with booster stage on the pump shaft outlet end of condensate pump, do not establishing Sealing Water for Feedwater Pump like this, under the prerequisite of desuperheater spray suction booster, when steam turbine set peaking operation, during deaerator level control valve standard-sized sheet, water of condensation is after condensate pump boosts, through the further supercharging of booster stage, make booster stage outlet pressure be more than or equal to the minimum pressure of Sealing Water for Feedwater Pump system and desuperheater spray system, so just can guarantee feed water pump sealing system, the operations such as desuperheater spray system are not subject to the impact of condensate pump degree of depth frequency control of motor speed operation, thoroughly eliminate the restriction loss of deaerator level control valve, at utmost reduce condensate pump power consumption.Guaranteeing, under the prerequisite of steam turbine set operational reliability, to realize the frequency conversion of the condensate pump degree of depth, give full play of the power savings advantages of frequency control of motor speed.
Accompanying drawing explanation
Fig. 1 is the structural representation of condensate pump for the utility model steam turbine set;
Fig. 2 is the utility model condensate system connection diagram;
Wherein, 1, booster stage outlet, 2, booster stage; 3, condensate pump primary outlet, 4, impeller, 5, chopped-off head suction port; 6, outer cylinder body, 7, inner barrel, 8, condensate pump entrance; 9, condenser hotwell, 10, steam turbine set condensate pump, 11, booster stage minimum flow protection valve; 12, the second stop valve, the 13, the 3rd stop valve, the 14, the 4th stop valve; 15, the first stop valve, 16, precision processing device of condensation water, the 17, the 5th stop valve.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the steam turbine set condensate pump in the utility model is to install booster stage scheme additional on the conventional basis by condensate pump (cartridge type, vertical, centrifugal) of steam turbine.That is: extend pump shaft and inner and outer shell conventional vertical, cartridge type condensate pump, on outlet end pump shaft, increase a booster stage 2, original pump casing and inner casing proper extension, and increase booster stage water outlet on the pump case extending.Booster stage 2 is independent overall structure, and its static part is connected with the inner casing of pump by bolt, and booster stage impeller is independently arranged on the pump shaft of prolongation.The annexation of condensate pump and booster stage is: the pump shaft outlet end of condensate pump is provided with booster stage 2, booster stage 2 can meet (being more than or equal to) Sealing Water for Feedwater Pump system and the requirement of desuperheater spray system minimum pressure, booster stage 2 is connected with the booster stage outlet 1 being arranged on outer cylinder body 6 with the inner barrel 7 of condensate pump respectively, and booster stage impeller is arranged on pump shaft outlet end.
Concrete, the utility model steam turbine set comprises condensate pump entrance 8 with condensate pump, inner barrel 7, outer cylinder body 6, impeller 4, condensate pump primary outlet 3, booster stage 2, booster stage outlet 1, its annexation is: comprise the outer cylinder body 6 with condensate pump entrance 8 and condensate pump primary outlet 3, in outer cylinder body 6, be provided with the inner barrel 7 with chopped-off head suction port 6, outer cylinder body 6 is connected by chopped-off head suction port 5 with inner barrel 7, in inner barrel 7, be provided with the impeller 4 being fixed on pump shaft, and inner barrel 7 is connected with condensate pump primary outlet 3, booster stage 2 on pump shaft outlet end is connected with inner barrel 7, booster stage outlet 1 is arranged on outer cylinder body 6.
Based on above-mentioned steam turbine set by the condensate system of condensate pump as shown in Figure 2: the condensate pump 10 for steam turbine set that comprises condenser hotwell 9 and be connected with condenser hotwell 9, steam turbine set is connected with desuperheater spray system with Sealing Water for Feedwater Pump system respectively with the booster stage outlet 1 of condensate pump 10; Condensate pump primary outlet 3 is connected with low pressure heat regenerative system through precision processing device of condensation water 16, and the outlet of low pressure heat regenerative system is generally connected with oxygen-eliminating device, and the entrance of low pressure heat regenerative system or outlet port are provided with deaerator level control valve.
Condensate pump primary outlet 3 is divided into two-way, and the first distribution pipeline that is provided with booster stage minimum flow protection valve 11 of leading up to is connected with booster stage outlet 1, and another road first stop valve 15 is connected with precision processing device of condensation water 16; Booster stage minimum flow protection valve 11 is opened where necessary, and the water of condensation of booster stage outlet 1 directly enters condensate pump primary outlet 3 pipelines; After being connected with the first distribution pipeline, booster stage outlet 1 is connected with the second stop valve 12, the outlet of the second stop valve 12 is connected with desuperheater spray system with Sealing Water for Feedwater Pump system respectively, and between the outlet of the second stop valve 12 and Sealing Water for Feedwater Pump system, be provided with between the outlet of the 3rd stop valve 13, the second stop valves 12 and desuperheater spray system and be provided with the 4th stop valve 14.
The outlet of precision processing device of condensation water 16 is also connected with the entrance of desuperheater spray system by being provided with the second distribution pipeline of the 5th stop valve 17, is connected to the entrance of desuperheater spray system after the outlet of the 4th stop valve 14 and the second distribution pipeline converge; Main condensate can directly be shunted a part and enter desuperheater spray system after precision processing device where necessary.
As shown in Figure 2; adopt the condensing water flow controlling method of condensate system to be: not establishing under the prerequisite of Sealing Water for Feedwater Pump, desuperheat water-sprinkling booster pump; when steam turbine set peaking operation, open deaerator level control valve and make it remain on full-gear; close booster stage minimum flow protection valve 11 and the 5th stop valve 17; first, second, third and fourth stop valve 15; 12,13,14 open.
The water of condensation that condenser hotwell 9 produces enters steam turbine set from condensate pump entrance 8 and boosts with condensate pump 10, a water of condensation part after boosting flows out and processes through the first stop valve 15, precision processing device of condensation water 16 from condensate pump primary outlet 3, then enters in low pressure heat regenerative system; The pressure that water of condensation another part after boosting further boosts to guarantee water of condensation through booster stage 2 is higher than Sealing Water for Feedwater Pump system and the desired minimum pressure of desuperheater spray system, water of condensation after further boosting flows out and is divided into two-way by the second stop valve 12 from booster stage outlet 1, one tunnel the 3rd stop valve 13 enters Sealing Water for Feedwater Pump system, and another Lu Jing tetra-stop valves 14 enter desuperheater spray system; Wherein, the flow of booster stage, lift depend on the users' such as Sealing Water for Feedwater Pump, desuperheater spray system demand and determine, and the condensing water flow that the utility model is set booster stage outlet 1 is 1%～20% of condensate pump 10 total discharges for steam turbine set; In addition, because deaerator level control valve both can be at the entrance of low pressure heat regenerative system, also can be in the outlet of low pressure heat regenerative system, therefore, the water of condensation of processing through precision processing device of condensation water 16 can be first through deaerator level control valve, to enter low pressure heat regenerative system to carry out heat exchange again, also can be through low pressure backheat, to be first heat exchange, then the deaerator level control valve of flowing through.
When Sealing Water for Feedwater Pump, desuperheater spray consumption are compared with hour (being that booster stage exports the water consumption that 1 water of condensation flowing out has surpassed Sealing Water for Feedwater Pump system and desuperheater spray system), open booster stage minimum flow protection valve 11, under the prerequisite of water consumption that guarantees Sealing Water for Feedwater Pump system and desuperheater spray system, make the water of condensation part that booster stage outlet 3 is flowed out enter precision processing device of condensation water 16 through booster stage minimum flow protection valve 11;
When desuperheater spray system water of condensation large usage quantity (being desuperheater spray system water of condensation quantity not sufficient), opening the water of condensation that the 5th stop valve 17 processed precision processing device of condensation water 16 and shunt to desuperheater spray system.
The utility model is conventional with on condensate pump basis in steam turbine set, increases the booster stage of a partial discharge at the outlet end of condensate pump.Condensate pump with booster stage has a condensate pump entrance and two outlets (solidifying pump primary outlet and booster stage outlet), condensate pump primary outlet provides most water of condensation to enter oxygen-eliminating device by low pressure heat regenerative system, deaerator level control valve etc., the booster stage outlet of condensate pump provides a small amount of water of condensation that pressure rating is higher to supply with such as users such as feed water pump sealing systems, meets the pressure requirement of these user's waters.In steam turbine set deaerator level control valve standard-sized sheet (now deaerator level control valve restriction loss is zero) situation, condensate pump primary outlet pressure is lower, can not meet other users' such as Sealing Water for Feedwater Pump system minimum pressure of supply water requirement, the booster stage carrying by condensate pump provides the more water of condensation of high pressure to supply with water pump sealing system and desuperheater spray system water.The utility model provides than the higher water of condensation of condensate pump primary outlet pressure by condensate pump booster stage, supply with water pump sealing system and desuperheater spray system, the restriction loss of deaerator level control valve while simultaneously thoroughly eliminating Turbo-generator Set peaking operation, really realize the degree of depth frequency control of motor speed operation of condensate pump, reduce condensate pump power consumption, improve performance driving economy and the Security of steam turbine set.
Claims (8)
1. a steam turbine set condensate pump, it is characterized in that: the pump shaft outlet end of described condensate pump is provided with the booster stage (2) that meets Sealing Water for Feedwater Pump system and desuperheater spray system minimum pressure, booster stage (2) is connected with the booster stage outlet (1) being arranged on outer cylinder body (6) with the inner barrel (7) of condensate pump respectively.
2. steam turbine set condensate pump according to claim 1, it is characterized in that: described condensate pump comprises the outer cylinder body (6) with condensate pump entrance (8) and condensate pump primary outlet (3), in outer cylinder body (6), be provided with the inner barrel (7) being communicated with outer cylinder body (6), in inner barrel (7), be provided with the impeller (4) being fixed on pump shaft, and inner barrel (7) is connected with condensate pump outlet (3), booster stage on pump shaft outlet end (2) is connected with inner barrel (7), and booster stage outlet (1) is arranged on outer cylinder body (6).
3. the condensate system of condensate pump for a steam turbine set based on described in claim 1 or 2, it is characterized in that: comprise condenser hotwell (9) and the condensate pump for steam turbine set (10) being connected with condenser hotwell (9), the booster stage outlet (1) of condensate pump for steam turbine set (10) is connected with desuperheater spray system with Sealing Water for Feedwater Pump system respectively; Condensate pump primary outlet (3) is connected with low pressure heat regenerative system through precision processing device of condensation water (16), and the entrance of low pressure heat regenerative system or outlet port are provided with deaerator level control valve.
4. condensate system according to claim 3, it is characterized in that: described condensate pump primary outlet (3) is divided into two-way, first distribution pipeline of leading up to is connected with booster stage outlet (1), and another road first stop valve (15) is connected with precision processing device of condensation water (16); Wherein, the first distribution pipeline is provided with booster stage minimum flow protection valve (11).
5. condensate system according to claim 4, it is characterized in that: after described booster stage outlet (1) is connected with the first distribution pipeline, be connected with the second stop valve (12), the outlet of the second stop valve (12) is connected with desuperheater spray system with Sealing Water for Feedwater Pump system respectively.
6. condensate system according to claim 5, is characterized in that: between the outlet of described the second stop valve (12) and Sealing Water for Feedwater Pump system, be provided with the 3rd stop valve (13).
7. according to the condensate system described in claim 5 or 6, it is characterized in that: the outlet of described precision processing device of condensation water (16) is also connected with the entrance of desuperheater spray system by the second distribution pipeline, and on the second distribution pipeline, is also provided with the 5th stop valve (17).
8. condensate system according to claim 7, is characterized in that: the outlet of described the second stop valve (12) is connected with the second distribution pipeline by the 4th stop valve (14) and is connected with desuperheater spray system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420300453.1U CN203906301U (en) | 2014-06-06 | 2014-06-06 | Condensate pump for turboset and condensate system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420300453.1U CN203906301U (en) | 2014-06-06 | 2014-06-06 | Condensate pump for turboset and condensate system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203906301U true CN203906301U (en) | 2014-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420300453.1U Withdrawn - After Issue CN203906301U (en) | 2014-06-06 | 2014-06-06 | Condensate pump for turboset and condensate system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203906301U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033390A (en) * | 2014-06-06 | 2014-09-10 | 西安热工研究院有限公司 | Condensate water pump and condensate water system for turbine set as well as control method for condensate water flow |
| CN114294249A (en) * | 2021-12-25 | 2022-04-08 | 上海水泵制造有限公司 | Detection apparatus for condensate pump |
-
2014
- 2014-06-06 CN CN201420300453.1U patent/CN203906301U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033390A (en) * | 2014-06-06 | 2014-09-10 | 西安热工研究院有限公司 | Condensate water pump and condensate water system for turbine set as well as control method for condensate water flow |
| CN104033390B (en) * | 2014-06-06 | 2016-09-14 | 西安热工研究院有限公司 | A kind of Steam Turbine condensate pump and condensate system and condensing water flow control method |
| CN114294249A (en) * | 2021-12-25 | 2022-04-08 | 上海水泵制造有限公司 | Detection apparatus for condensate pump |
| CN114294249B (en) * | 2021-12-25 | 2023-11-28 | 上海水泵制造有限公司 | Condensate pump's detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141029 Effective date of abandoning: 20160914 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20141029 Effective date of abandoning: 20160914 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |