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Method and device for measuring pressure inside steam generator

A steam generator, internal pressure technology, applied in the direction of measuring devices, measuring fluid pressure, instruments, etc., can solve problems such as blockage of the detection tube 10, slow steam flow, blockage, etc.

Inactive Publication Date: 2004-03-24
ELECTRICITE DE FRANCE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is caused by the strong flow that occurs along the wall on which the assay equipment is mounted, so the holes or openings 13 of the stabilizing means 11 may be too small and local blockages occur.
Because the steam flow inside the spherical stabilizer 13 is relatively slow, it may cause the detection tube 10 to be blocked

Method used

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  • Method and device for measuring pressure inside steam generator
  • Method and device for measuring pressure inside steam generator
  • Method and device for measuring pressure inside steam generator

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Embodiment Construction

[0038] Referring to FIG. 4 , the pressure measurement device of the present invention is also mainly composed of a detection tube 20 and a stabilizing device 21 . It is mounted on the inner wall 1I of the steam generator 1 by a fixing device which may consist of a threaded portion 25 on the outer wall of the probe tube 20 with a groove 27 which can be screwed into the inner surface 1I of the steam generator 1. Cut the threaded hole 26 inside. To lock the measuring device according to the invention in its optimum working position in the direction of rotation, a fixing nut 28 and a flange 29 are screwed onto the threaded part 25 . Winged washers 30 and positioning pins 31 complete the fixture and position these members in the direction of rotation. The winged gasket 30 is locked in the groove 27 and the locating pin 31 is inserted into the locating hole 32 on the inner wall 1S of the steam generator 1 . It should be noted that preferably a fixing part, such as the fixing nut 2...

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Abstract

The method and device are able to overcome possible clogging of measuring devices comprising probes each surrounded by a tranquilliser.It chiefly comprises a tranquilliser (21), preferably spherical in shape, fitted with a separating partition (33) allowing measurement via side holes (32) in a measuring channel (20) and return of condensates via end holes (35) leading to a deflector for evacuation via slatted openings (23) leading into the steam generator (1). Outer measuring holes are made in the median plane of the tranquilliser (21). Application to all steam generators.

Description

technical field [0001] The present invention relates to the determination of the internal pressure of steam generators used in nuclear facilities for power generation. More precisely, it concerns the control of the water level in the secondary circuit of the steam generator. Background technique [0002] In the steam generator, the determination of the water level in the secondary circuit is carried out by several probes or pressure measuring devices to complete the determination of the pressure difference. see figure 1 , the two probes 2S and 2I shown are located on the outer wall of the steam generator 1, but at different heights. The lower probe 2I is located just above the generator cyclone and the upper probe 2S is located a few meters vertically above the lower probe 2I. This device for determining the differential pressure consists of a door 7 on each measuring channel, a condensation tube 5 downstream of the upper probe 2S, below the ventilation hole 6 , a stabili...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L19/00
CPCG01L19/0007G01L19/00
Inventor M·埃明
Owner ELECTRICITE DE FRANCE