Pressure vessel sight glass

onePressure vessel sight glassScope of

This product specifiesPressure vessel sight glassType, basic parameters, technical conditions, etc.Pressure vessel sight glassSuitable for pressure vessels with a nominal pressure not exceeding 2.5MPa, a nominal diameter of 50-200mm, a maximum allowable medium temperature of 250 ℃, and a maximum sudden temperature difference of 230 ℃.

twoPressure vessel sight glassstandard

NB/T 47017-2011 《Pressure vessel sight glass

How to translateHGJ 501~502-1986《

Pressure vessel sight glass

How to translate

HG/T 21575-1994 (2009) "Light Mirrors"HG21505-1992 (2009) "Combination Mirror"

GB/T 23259 "Mirror Glass for Pressure Vessels"

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Pressure vessel sight glass

Selection Example

Example 1

Mirror with nominal pressure of 2.5MPa, nominal diameter of 50mm, made of stainless steel S30408, without spotlight, and equipped with flushing device.

Its model is: Mirror PN2.5DN50 II-W

Example 2

A mirror with a nominal pressure of 1.6MPa, a nominal diameter of 80mm, made of stainless steel S30403, equipped with a non explosion proof spotlight combination, and without a flushing device.

Its model is: Mirror PN1.6DN80 II-SB, and the material is indicated as S30403 in the remarks column

Example 3

The nominal pressure is 1.0MPa, the nominal diameter is 150mm, the material is low-alloy steel Q345R, with explosion-proof spotlight combination, and the mirror does not have a flushing device. Among them, SF1 explosion-proof spotlights are selected, with an input voltage of 24V, a light source power of 50W, and an explosion-proof rating of EExdIICT3.

Its model is: Mirror PN1.0DN150 I-SF1. And indicate in the remarks column that the material is Q345R.Example 4The nominal pressure is 0.6MPa, the nominal diameter is 200mm, the material is stainless steel S31603, with explosion-proof spotlight combination, and a mirror with flushing device. SF2 explosion-proof spotlights are selected, with an input voltage of 24V, a light source power of 20W, and an explosion-proof rating of EExdIICT4.

Its model is: Mirror PN0.6DN200 II-SF2-W. And indicate in the remarks column that the material is S31603.

fourPressure vessel sight glassPurpose of Preparation

As a peeping device for pressure vessels, sight glasses have been widely used in industries such as petroleum, chemical, pharmaceutical, and light industry. With the continuous improvement of technical level in design, materials, manufacturing and other aspects of China's pressure vessel industry this year, and the gradual development of the standard system, both design standards and material standards have been updated accordingly. However, due to the early release of our current mirror standards, some of the content in the standards can no longer be coordinated with other current standards.At the same time, considering that the series, specifications, sizes, etc. of several current mirror standards are also inconsistent, it is inconvenient for designers to choose. In order to adapt to the current situation of the standard system and the needs of practical engineering, according to the plan and arrangement of the National Boiler and Pressure Vessel Standardization Technical Committee, the Fixed Container Branch of the National Boiler and Pressure Vessel Standardization Committee is responsible for organizing it. China Petrochemical Engineering Construction Company is currentlyPressure vessel sight glassOn the basis of the standard, this standard has been formulated.In response to recent reasonsPressure vessel sight glassAccidents caused by quality reasons, in order to standardizePressure vessel sight glassTo ensure the quality of mirror products in the market, the National Technical Committee for Standardization of Boiler and Pressure Vessels plans to revise the mirror standardsPressure vessel sight glassManufacturing must undergo safety registration, only after approval