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A condenser vacuum pumping device

A technology for vacuuming equipment and condensers, applied in lighting and heating equipment, steam/steam condensers, etc., can solve problems such as increased plant power consumption, reduce losses, improve stability, and reduce power consumption Effect

Active Publication Date: 2019-08-20
河北大唐国际张家口热电有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing condenser vacuuming equipment uses high-power water ring vacuum pumps to maintain the vacuum of the unit, which will increase the power consumption rate of the plant

Method used

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  • A condenser vacuum pumping device
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Experimental program
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Effect test

Embodiment 1

[0034] Such as figure 1 As shown, in this embodiment, a condenser vacuum pumping equipment is introduced. The air pumping port of the condenser 1 is connected to the first pipeline and the second pipeline in parallel with the first vacuum pump 2 and the second vacuum pump 3 respectively. Connection, the first pipeline and the second pipeline are respectively equipped with a control device for controlling the on-off of the pipeline; the power of the first vacuum pump 2 is greater than that of the second vacuum pump 3, and the second pipeline is equipped with a device to increase the pressure of the medium flowing into the second vacuum pump 3 The supercharging device is arranged in the upstream pipeline of the second vacuum pump 3 .

[0035]In this embodiment, the boosting device is a Roots pump 4 , and the Roots pump 4 is arranged on the second pipeline upstream of the second vacuum pump 3 . The Roots pump 4 pressurizes the gas-liquid mixed medium flowing through, so that the...

Embodiment 2

[0057] The difference between this embodiment and the above-mentioned first embodiment is that the air extraction port of the condenser 1 is connected with the third vacuum pump 31 through the third pipeline, and the third vacuum pump 31 is connected with the third steam-water separator 32 and the third cooler 33. The power of the third vacuum pump 31 is set equal to that of the first vacuum pump 2 in a circular connection.

[0058] By setting the third pipeline in parallel with the first pipeline and the second pipeline, and setting the third vacuum pump on the third pipeline, it can provide a spare vacuum branch for the condenser vacuum equipment, so as to further improve the whole machine The stability of the first vacuum pump and the second vacuum pump can be prevented from being damaged and unable to start; at the same time, when the power required for the initial stage of vacuuming is large, the first vacuum pump and the third vacuum pump can be started at the same time t...

Embodiment 3

[0067] The difference between this embodiment and the above-mentioned embodiments is that the pressurization device provided on the second pipeline is a plurality of Roots pumps 4 provided on the upstream pipeline of the second vacuum pump 3 .

[0068] In this embodiment, each Roots pump 4 is serially connected in series on the second pipeline upstream of the second vacuum pump 3 . The Roots pump 4 sequentially pressurizes the gas-liquid mixed medium flowing through, so that the pressure of the medium flowing into the second vacuum pump 3 is further increased, so as to improve the separation efficiency of the second vacuum pump, and realize the use of a low-power vacuum pump to reduce the condensed steam. The purpose of vacuumizing the condenser is to achieve the effect of reducing the overall power consumption of the condenser vacuuming equipment. At the same time, during the pressurization process, according to the working state of the second vacuum pump, one or more or all ...

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Abstract

The invention introduces condenser vacuum extraction equipment and a control method. A first pipe and a second pipe which are in parallel connection and connected with an extraction opening of a condenser are connected with a first vacuum pump and a second vacuum pump correspondingly. The first pipe and the second pipe are each provided with a control device for controlling the on / off state of the corresponding pipe. Power of the first vacuum pump is greater than that of the second vacuum pump. The second pipe is provided with a pressurization device for increasing pressure of a medium flowing into the second vacuum pump. The pressurization device is arranged on an upstream pipe of the second vacuum pump. In this way, the condenser vacuum extraction equipment can have two vacuum extraction branches different in power consumption so that the vacuum extraction equipment can conduct vacuum extraction treatment on the interior of the condenser through the two branches separately or simultaneously; and the situation that when one of the vacuum pumps is damaged, a machine cannot work is avoided. Meanwhile, the equipment is further applicable to vacuum extraction treatment conducted by selecting the corresponding branch under different working conditions; and total power consumption of the condenser vacuum extraction equipment is further reduced.

Description

technical field [0001] The invention relates to a condenser vacuum pumping device in the electric power industry, and also relates to a condenser vacuum pumping method using the condenser vacuum pumping device. Background technique [0002] The thermal power generation system of the thermal power plant is equipped with a condenser, and the pressure value inside the condenser has strict requirements, so it is necessary to equip the condenser with vacuum equipment. The existing condenser vacuuming equipment uses a high-power water ring vacuum pump to maintain the vacuum of the unit, which will cause the power consumption rate of the plant to increase. [0003] From the perspective of protecting the equipment from cavitation, improving the economy of the unit, and reducing the power consumption rate of the plant, it is very important to improve the existing vacuum equipment unit to improve the reliability of the equipment and reduce the power consumption of the plant. necessar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28B9/10F28B11/00
Inventor 马骋赵博冬杨凯轩施利钢韩举
Owner 河北大唐国际张家口热电有限责任公司
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