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Device for discharging non-condensable gas from condensation segment by means of venturi effect

A technology of Venturi effect and condensation section, which is applied in the direction of cooling device, greenhouse gas reduction, steam/steam condenser, etc., and can solve the problems of weakening steam diffusion flow and decreasing condensation efficiency

Active Publication Date: 2015-04-08
唐山周行科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, when the non-condensable gas discharge aperture and orientation are not set properly, the escape of non-condensable gas will weaken the diffusion flow of steam and reduce the condensation efficiency. This physical phenomenon is often ignored by designers.

Method used

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  • Device for discharging non-condensable gas from condensation segment by means of venturi effect
  • Device for discharging non-condensable gas from condensation segment by means of venturi effect

Examples

Experimental program
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Effect test

Embodiment 1

[0022] see figure 1 , the present invention uses the Venturi effect to discharge the non-condensable gas device in the condensation section, comprising an external sleeve 2, and an internal condensation pipe 3 is coaxially sleeved in the external sleeve 2; an opening is opened on the top of the external sleeve 2 , a steam pipe 1 is inserted in the opening, and the steam pipe 1 is perpendicular to the axis of the outer casing 2; with the central axis of the steam pipe 1 as the axis of symmetry, two through holes are symmetrically opened at the bottom of the outer casing 2, and the through holes The central axis and the central axis of the steam pipe 1 form an included angle of 30°, and a Venturi tube 4 for discharging non-condensable gas is respectively arranged in the two through holes, and the Venturi tube 4 is inserted and welded on the outer casing 2 In the through hole provided at the bottom, a gas outlet pipe 5 is also provided at one end of the Venturi tube 4 protruding ...

Embodiment 2

[0025] Unlike the example, see figure 2 , The Venturi tube of the present embodiment adopts a telescoping nozzle, and the orifice of the telescoping nozzle gradually shrinks from the inner condensing pipe 3 to the outer casing 2 and then gradually increases.

[0026] The device of the present invention utilizing the Venturi effect to discharge non-condensable gas in the condensation section, when in use:

[0027] When the steam carrying the non-condensable gas passes from the steam pipe 1 into the outer casing 2, it contacts the inner condensing pipe 3 . Since the cooling medium is introduced into the internal condensation pipe 3, the steam condenses on the surface of the internal condensation pipe, while the non-condensable gas stays near the liquid film layer on the outer surface of the condensation pipe. In the lower part of the condensation tube, a large amount of non-condensable gas has accumulated. Therefore, it is advisable to install the Venturi tube 4 here. What i...

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Abstract

The invention discloses a device for discharging non-condensable gas from a condensation segment by means of venturi effect and belongs to the technical field of condensing equipment. The device comprises an outer sleeve; an inner condensing tube is coaxially nested in the outer sleeve; the top of the outer sleeve is provided with an opening for insertion of a steam tube; with a central axis of the steam tube as a symmetric axis, two through holes are symmetrically provided in the bottom of the outer sleeve; the central axes of the through holes have an included angle of 30 degrees with the central axis of the steam tube; two venturi tubes for discharging the non-condensable gas are disposed in the through holes, respectively. According to the device, a spray tube is used to the non-condensable gas from a condensation space, suction of the non-condensable gas causes disturbance to a liquid membrane, condensate is driven to flow out of the condensing tube, the venturi tubes create a positive pressure gradient from the condensation space to the environment, the non-condensable gas is sucked out of the condensation space and discharged to the environment, safety and environment protection are achieved, energy is saved, and efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of condenser equipment, and relates to a device for discharging non-condensable gas, in particular to a device for discharging non-condensable gas in a condensation section by utilizing the Venturi effect. Background technique [0002] Energy saving and emission reduction is the basic national policy of our country. Its main application field is the industrial sector. The horizontal shell-and-tube condenser is one of the main heat exchange equipment in the industrial sector. Its energy saving is particularly important. It is mainly composed of a cylindrical shell and a horizontal tube bundle. The refrigerant vapor condenses outside the horizontal tube, the condensate flows out from the bottom of the cylinder, and the cooling water flows back and forth in the horizontal tube for many times. The non-condensable gas contained in the horizontal shell-and-tube condenser is one of the important reasons for the red...

Claims

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Application Information

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IPC IPC(8): F28B1/02G21C15/18
CPCY02E30/30
Inventor 张俊霞赵红星童莉葛李楠刘永旭
Owner 唐山周行科技发展有限公司
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