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High-efficiency energy saving condenser steam injection vacuum system and heat exchange method of heat exchanger thereof

A vacuum system and ejector technology, applied in steam/steam condensers, lighting and heating equipment, etc., can solve the problems of poor heat exchange effect, poor safety and reliability, heat loss, etc., to reduce the use cost and achieve good heat exchange effect. , the effect of stable performance

Inactive Publication Date: 2017-08-18
上海赛迩福电力技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing condenser steam injection vacuum system has unstable performance, poor safety reliability and poor heat transfer effect
[0004] In addition, in the existing steam jet vacuum system, open water or closed water is usually used as cooling water, and its heat is directly taken away by the cooling water, resulting in heat loss. At the same time, the use of open water will also cause fouling of the heat exchanger , affecting the heat transfer efficiency of the heat exchanger, resulting in the need for cleaning after the heat exchanger has been running for a period of time, reducing the efficiency of the equipment

Method used

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  • High-efficiency energy saving condenser steam injection vacuum system and heat exchange method of heat exchanger thereof
  • High-efficiency energy saving condenser steam injection vacuum system and heat exchange method of heat exchanger thereof
  • High-efficiency energy saving condenser steam injection vacuum system and heat exchange method of heat exchanger thereof

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Experimental program
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Effect test

Embodiment 1

[0025] see figure 1 , the high-efficiency energy-saving condenser steam injection vacuum system provided by the present invention includes a first-stage steam ejector, a hybrid heat exchanger assembly, a second-stage steam ejector 300 and a heat exchange system connected in series.

[0026] The condenser is generally provided with an air extraction main pipe line and a condensate main pipe line 520. The air extraction main pipe line is a single-pipe structure, which includes an air extraction main pipe 510, and the air extraction main pipe 510 is connected to a vacuum pump group 700.

[0027] The first stage steam ejector includes a steam ejector 100 and the hybrid heat exchanger assembly includes a hybrid heat exchanger 200 .

[0028] The suction port of the steam ejector 100 is connected to the suction main pipe 510, the injection port of the steam ejector 100 is connected to the steam side inlet of the hybrid heat exchanger 200, and the power steam port of the steam ejecto...

Embodiment 2

[0045] see figure 2, the high-efficiency energy-saving condenser steam injection vacuum system provided by the present invention includes a first-stage steam ejector, a hybrid heat exchanger assembly, a second-stage steam ejector 300 and a heat exchange system connected in series.

[0046] The condenser is generally provided with an air extraction main pipe and a condensate jelly pipe 520. The air extraction main pipe is a double-pipe structure, which includes a high-pressure air extraction main pipe 511 and a low-pressure air extraction main pipe 512. The gas main pipe 511 and the low-pressure suction main pipe 512 are respectively connected to the vacuum pump group 800 .

[0047] The first-stage steam injector includes a first steam injector 110 and a second steam injector 120 , and the hybrid heat exchanger assembly includes a hybrid heat exchanger 200 .

[0048] The suction port of the first steam ejector 110 is connected to the high-pressure air extraction main pipe 511...

Embodiment 3

[0066] see image 3 , the high-efficiency energy-saving condenser steam injection vacuum system provided by the present invention includes a first-stage steam ejector, a hybrid heat exchanger assembly, a second-stage steam ejector 300 and a heat exchange system connected in series.

[0067] The condenser is generally provided with an air extraction main pipe and a condensate jelly pipe 520. The air extraction main pipe is a double-pipe structure, which includes a high-pressure air extraction main pipe 511 and a low-pressure air extraction main pipe 512. The gas main pipe 511 and the low-pressure suction main pipe 512 are respectively connected to the vacuum pump group 800 .

[0068] The first-stage steam injector includes a first steam injector 110 and a second steam injector 120 , and the hybrid heat exchanger assembly includes a first hybrid heat exchanger 210 and a second hybrid heat exchanger 220 .

[0069] The suction port of the first steam ejector 110 is connected to t...

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Abstract

The invention discloses a high-efficiency energy saving condenser steam injection vacuum system and a heat exchange method of a heat exchanger thereof. The energy saving condenser steam injection vacuum system comprises a first-grade steam injector, a mixed heat exchanger module, a second-grade steam injector and a tubular heat exchanger serially connected in sequence. The heat exchange method exchanges heat through directly introducing condensed water into the heat exchanger. The system is stable in performance, safe, reliable and excellent in heat exchange effect, has no need to arrange a cooling water supply device, can directly use the condensed water for exchanging heat, greatly reduces the use cost, and saves the resource.

Description

technical field [0001] The invention relates to a steam injection vacuum system for a condenser, in particular to an efficient energy-saving steam injection vacuum system for a condenser and a heat exchange method for a heat exchanger thereof. Background technique [0002] In thermal power plants, the existing condenser steam injection vacuum system generally uses a water ring vacuum pump to extract the non-condensable gas in the condenser to ensure the vacuum degree of the condenser. [0003] However, the existing condenser steam injection vacuum system has unstable performance, poor safety reliability and poor heat transfer effect. [0004] In addition, in the existing steam jet vacuum system, open water or closed water is usually used as cooling water, and its heat is directly taken away by the cooling water, resulting in heat loss. At the same time, the use of open water will also cause fouling of the heat exchanger , affecting the heat transfer efficiency of the heat e...

Claims

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Application Information

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IPC IPC(8): F28B9/10F28B9/08
CPCF28B9/08F28B9/10
Inventor 程琛
Owner 上海赛迩福电力技术有限公司
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