CN202973947U - Double-backpressure-condenser vacuum air exhausting system - Google Patents
Double-backpressure-condenser vacuum air exhausting system Download PDFInfo
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- CN202973947U CN202973947U CN 201220690472 CN201220690472U CN202973947U CN 202973947 U CN202973947 U CN 202973947U CN 201220690472 CN201220690472 CN 201220690472 CN 201220690472 U CN201220690472 U CN 201220690472U CN 202973947 U CN202973947 U CN 202973947U
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- outer ring
- exhaust tube
- inner ring
- exhaust pipe
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Abstract
The utility model provides a double-backpressure-condenser vacuum air exhausting system which comprises a high backpressure condenser, a low backpressure condenser and a vacuum pump set. An inner ring and an outer ring of the high backpressure condenser are respectively provided with a high pressure inner ring air exhaust pipe and a high pressure outer ring air exhaust pipe. An inner ring and an outer ring of the low backpressure condenser are respectively provided with a low pressure inner ring air exhaust pipe and a low pressure outer ring air exhaust pipe. The high pressure inner ring air exhaust pipe and the low pressure inner ring air exhaust pipe are joined to form an inner ring air exhaust pipe. The high pressure outer ring air exhaust pipe and the low pressure outer ring air exhaust pipe are joined to form an outer ring air exhaust pipe. The outer ring air exhaust pipe and the inner ring air exhaust pipe are joined to form a female pipe which is connected with an inlet of the vacuum pump set. A pipeline of the high pressure inner ring air exhaust pipe and a pipeline of the high pressure outer ring air exhaust pipe are respectively provided with a throttle assembly and a bypass pipe connected with each throttle assembly in parallel. The double-backpressure-condenser vacuum air exhausting system has the advantages of being high in safety, low in transform expense, little in transform workload, small in transform risk, high in safety, and capable of achieving the purpose of lowering vacuum of the low pressure condenser.
Description
Technical field
The utility model relates to vacuum-pumping system, refers to especially a kind of double pressure condenser vacuum-pumping system.
Background technology
Condenser is as the visual plant in condensing type thermal power generation unit s cold end system, the quality of its performance directly affects the economy of unit, wherein in condenser not gathering of condensable gas can produce very adverse influence to Performance of Condensers, so the condenser vacuum extract system has played vital effect to keeping good Performance of Condensers.Along with the maximization of generating set single-machine capacity, its condenser majority of 600MW and above unit adopts double pressure condensers at present.Double pressure condenser has the following advantages: under identical circulating water temperature, flow, can obtain the average reduced pressure lower than single-pressure condenser due to double pressure condenser, adopt double pressure condenser to have economy preferably; The condensate water that double pressure condenser is lower with the low-pressure side temperature is introduced the high-pressure side and is carried out post bake, so condensate undercooling is less than single back pressure condenser, has improved turbine thermodynamic efficiency.Yet the design defect due to the condenser vacuum exhaust pipe, high and low back pressure vacuum suction pipeline is adopted arranged in series, namely first draw exhaust pipe from the high pressure condenser and enter the low pressure condenser, draw exhaust pipe from the low pressure condenser again and connect the vavuum pump group, so design can produce the problem of high and low back pressure condenser vacuum pressure reduction deficiency, reduce the advantage of double pressure condenser, reduced the unit operation economy.
Summary of the invention
The utility model proposes a kind of double pressure condenser vacuum-pumping system, solved and to have produced the problem of high and low back pressure condenser vacuum pressure reduction deficiency in the prior art, reduced the advantage of double pressure condenser, reduced the shortcoming of unit operation economy.
The technical solution of the utility model is achieved in that
a kind of double pressure condenser vacuum-pumping system, comprise the high back pressure condenser, low back pressure condenser, the vavuum pump group, in described high back pressure condenser, the outer ring is respectively equipped with high pressure inner ring exhaust tube, high pressure outer ring exhaust tube, in described low back pressure condenser, the outer ring is respectively equipped with low pressure inner ring exhaust tube, low pressure outer ring exhaust tube, described high pressure inner ring exhaust tube and low pressure inner ring exhaust tube merge into the inner ring exhaust tube, described high pressure outer ring exhaust tube and low pressure outer ring exhaust tube merge into the outer ring exhaust tube, described outer ring exhaust tube and inner ring exhaust tube merge into female pipe, this mother's pipe is connected with the entrance of vavuum pump group, it is characterized in that, be equipped with orifice union and the shunt valve in parallel with orifice union on the pipeline of described high pressure inner ring exhaust tube and high pressure outer ring exhaust tube.
Described orifice union is restricting orifice or manually operated door or Electrically operated gate or pneumatic door.
Described shunt valve is provided with the shunt valve valve.
Described shunt valve valve is manually operated door or bypass Electrically operated gate or bypass pneumatic door.
Described vavuum pump group is comprised of two or more vavuum pumps.
Compared with prior art, advantage of the present utility model comprises: safe, improvement expenses is low, and the retrofit work amount is little, and the transformation risk is little, safe, substantially can reach to reduce low pressure condenser vacuum purpose.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of double pressure condenser vacuum-pumping system of the utility model.
Wherein, the low back pressure condenser of 1-, 2-high back pressure condenser, 3-outer ring shunt valve valve, 4-inner ring shunt valve valve, 5-inner ring orifice union, 6-outer ring orifice union, 7-outer ring shunt valve, 8-inner ring shunt valve, 9-high pressure outer ring exhaust tube, 10-high pressure inner ring exhaust tube, 11-outer ring exhaust tube valve, 12-inner ring exhaust tube valve, the female pipe of 13-, 14-the first vacuum valve valve, 15-the second vacuum valve valve, 16-the 3rd vacuum valve valve
The specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
as shown in Figure 1, a kind of double pressure condenser vacuum-pumping system, comprise high back pressure condenser 2, low back pressure condenser 1, the vavuum pump group, in described high back pressure condenser 2, the outer ring is respectively equipped with high pressure inner ring exhaust tube 10, high pressure outer ring exhaust tube 9, in described low back pressure condenser 1, the outer ring is respectively equipped with low pressure inner ring exhaust tube, low pressure outer ring exhaust tube, described high pressure inner ring exhaust tube 10 merges into the inner ring exhaust tube with low pressure inner ring exhaust tube, described high pressure outer ring exhaust tube 9 merges into the outer ring exhaust tube with low pressure outer ring exhaust tube, described outer ring exhaust tube and inner ring exhaust tube merge into female pipe, this mother's pipe is connected with the entrance of vavuum pump group, be equipped with orifice union (5 on the pipeline of described high pressure inner ring exhaust tube 10 and high pressure outer ring exhaust tube 9, 6) reach the shunt valve (8 in parallel with orifice union, 7).Described orifice union (5,6) is restricting orifice or manually operated door or Electrically operated gate or pneumatic door.Described shunt valve (8,7) is provided with shunt valve valve (4,3).Described shunt valve valve (4,3) is manually operated door or bypass Electrically operated gate or bypass pneumatic door.Described vavuum pump group is comprised of two or more vavuum pumps.
high pressure inner ring exhaust tube 10, high pressure outer ring exhaust tube 9 is in high back pressure condenser 2, draw the gas area of finding time, outer ring, through orifice union (5, 6) enter low back pressure condenser 1 after, respectively with the low pressure inner ring exhaust tube of low back pressure condenser 1, low pressure outer ring exhaust tube converges, draw from low back pressure condenser 1 influent side, each is through outer ring exhaust tube valve 11, be aggregated into the female pipe 13 of exhaust after inner ring exhaust tube valve 12, be connected with the vacuum pump inlet that three vavuum pumps form respectively, these three vavuum pumps are respectively equipped with the first vacuum valve valve 14, the second vacuum valve valve 15, the 3rd vacuum valve valve 16, orifice union (5, 6) can be contracted to high pressure inner ring exhaust tube 10, 1/3 Φ of high pressure outer ring exhaust tube 9 calibers.By adjusting outer ring shunt valve valve 3, inner ring shunt valve valve 4 sizes, guarantee that height back pressure back pressure of condenser reaches design load.
The vavuum pump group that three above-mentioned vavuum pumps form also can form the vavuum pump group by two vavuum pumps.
The above is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. double pressure condenser vacuum-pumping system, comprise the high back pressure condenser, low back pressure condenser, the vavuum pump group, in described high back pressure condenser, the outer ring is respectively equipped with high pressure inner ring exhaust tube, high pressure outer ring exhaust tube, in described low back pressure condenser, the outer ring is respectively equipped with low pressure inner ring exhaust tube, low pressure outer ring exhaust tube, described high pressure inner ring exhaust tube and low pressure inner ring exhaust tube merge into the inner ring exhaust tube, described high pressure outer ring exhaust tube and low pressure outer ring exhaust tube merge into the outer ring exhaust tube, described outer ring exhaust tube and inner ring exhaust tube merge into female pipe, this mother's pipe is connected with the entrance of vavuum pump group, it is characterized in that, be equipped with orifice union and the shunt valve in parallel with orifice union on the pipeline of described high pressure inner ring exhaust tube and high pressure outer ring exhaust tube.
2. a kind of double pressure condenser vacuum-pumping system according to claim 1, is characterized in that, described orifice union is restricting orifice or manually operated door or Electrically operated gate or pneumatic door.
3. a kind of double pressure condenser vacuum-pumping system according to claim 1, is characterized in that, described shunt valve is provided with the shunt valve valve.
4. a kind of double pressure condenser vacuum-pumping system according to claim 3, is characterized in that, described shunt valve valve is manually operated door or bypass Electrically operated gate or bypass pneumatic door.
5. a kind of double pressure condenser vacuum-pumping system according to claim 1, is characterized in that, described vavuum pump group is comprised of two or more vavuum pumps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690472 CN202973947U (en) | 2012-12-13 | 2012-12-13 | Double-backpressure-condenser vacuum air exhausting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690472 CN202973947U (en) | 2012-12-13 | 2012-12-13 | Double-backpressure-condenser vacuum air exhausting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202973947U true CN202973947U (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220690472 Expired - Lifetime CN202973947U (en) | 2012-12-13 | 2012-12-13 | Double-backpressure-condenser vacuum air exhausting system |
Country Status (1)
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| CN (1) | CN202973947U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967158A (en) * | 2012-12-13 | 2013-03-13 | 华电电力科学研究院 | Vacuum pumping system of double-backpressure condenser |
| CN105464726A (en) * | 2015-12-31 | 2016-04-06 | 华电莱州发电有限公司 | Energy conservation and emission reduction system with double back-pressure condensers in thermal power station |
-
2012
- 2012-12-13 CN CN 201220690472 patent/CN202973947U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967158A (en) * | 2012-12-13 | 2013-03-13 | 华电电力科学研究院 | Vacuum pumping system of double-backpressure condenser |
| CN105464726A (en) * | 2015-12-31 | 2016-04-06 | 华电莱州发电有限公司 | Energy conservation and emission reduction system with double back-pressure condensers in thermal power station |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170110 Address after: Hangzhou City, Zhejiang province 310030 Xihu District West Lake science and Technology Economic Zone Road No. 10 Patentee after: Huadian Electric Power Research Institute Patentee after: HANGZHOU HUADIAN ENERGY ENGINEERING Co.,Ltd. Address before: Hangzhou City, Zhejiang province 310030 Xihu District West Lake science and Technology Economic Zone Road No. 10 Patentee before: Huadian Electric Power Research Institute |
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| CX01 | Expiry of patent term |
Granted publication date: 20130605 |
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| CX01 | Expiry of patent term |