DVGW ARBEITSBLATT G 491 PDF

Beiblatt Zum Dvgw-Arbeitsblatt G Gas-Druckregelanlagen Fuer Eingangsdruecke Bis Einschliesslich Bar; Planung, Fertigung, Errichtung. within the DVGW Gas Innovation Campaign which includes additional tests .. [ 10] DVGW, Hrsg., Technische Regel Arbeitsblatt DVGW G (A) Juli Insbesondere sind die DVGW-Arbeitsblätter G , G und G zu beachten. Umbau, Ersatzteile. Jegliche technische Veränderung ist untersagt.

Author: Voshakar Kerg
Country: Panama
Language: English (Spanish)
Genre: Love
Published (Last): 5 May 2013
Pages: 203
PDF File Size: 4.94 Mb
ePub File Size: 12.37 Mb
ISBN: 988-4-24244-206-3
Downloads: 36132
Price: Free* [*Free Regsitration Required]
Uploader: Niran

All other values shall be measured at hourly intervals. DVGW certification of products in contact with drinking water Dipl. The pipeline joints to be tested must be free from grease and paintwork. Identical components are provided with the same reference numerals. B alternatively to the volumetric flow to measure the mass flow rate. In the case of lower temperatures, special b shall be taken.

See pressure testing methods B1 or B2 with respect to checking for absence of air. Such gas pressure regulating and -messanlagen GPRM systems are known from practice.

Gas-Druckregelgerät RMG 202

In the first line network can, for example, be a transmission system, usually prevails in which a transport pressure of about 60 bar. The invention is explained below with reference to a preferred embodiment of the gas pressure regulation according to the invention and -messanlage in connection arbeitsblaty the accompanying drawings. Prior to testing, it is recommended to check for the absence of any arbeittsblatt inside the piping.

When test pressure is applied, the ratio between the added volume of water and the increase in pressure can indicate inadequate de-airing or major leaks. This is intolerable, especially in natural gas transportation business.

Here monitors a counter to ensure the other is the high measurement accuracy for billing purposes in continuous operation.

As with unillustrated valves – rvgw wafer – equipped. The invention relates to a gas pressure regulating and -messanlage, particularly for natural gas. In particular, the following aspects should be taken into consideration: The relevant testing method to be applied shall be governed by the materials used, the type of joints between the piping or facility components and the envisaged scope of application.

Gas-Druckregel- und -messanlage nach Anspruch 8, dadurch gekennzeichnet, dass die Filter Gas pressure regulating and -messanlage according to claim 8, characterized in that the filter 10a 10a. Upstream or downstream of a preheating device.

  HIPOXIA HIPOXICA PDF

Bei dem zweiten Leitungsnetz kann es sich um das Leitungsnetz eines regionalen Versorgungsunternehmens handeln. After applying and increasing the test pressure at a specific rate max.

This object is achieved by a gas pressure regulating and -messanlage having the features of claim ddvgw. The gas pressure control according to the invention and -messanlage GPRM plantin particular for high-pressure area, is compact and requires little space.

Air may also be replaced by other suitable gaseous media; below, reference is only made to air. Playing pressure losses a subordinate role, can be optimized by a further flow straightener between the two measuring devices the flow-calming effect.

Table of Contents51 Scope2 General EvaluationDue to the measurement tolerances of this method, changes in volume generally result which, in total, do not cancel each other out and which can be converted by inserting all the tolerances into the relevant calculation formulae. Von den Messeinrichtungen Of the measuring devices 6a 6a. Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee. The change in volume of the test section can be established from the following equation: Is upstream or downstream.

It is recommended to repeat the test procedure at a reduced pressure and using foamants, after reducing the test pressure to approx.

The exact test pressure value shall be specified prior to testing. After reducing arbektsblatt pressure to a value as low as possible hold argeitsblatt 30 minuteswhich should be at arbeltsblatt 2 bar at the absolute highest point along the pipeline, and after increasing the pressure to the test pressure, the pressure shall again be held for at least 90 minutes. To measure the temperature on the pipe wall, thermometers located at intervals of 2.

The object of the invention accordingly is to provide a GPRM plant for bidirectional operation, which requires little technical effort and their footprint is small. Method for operating a conveyor pipeline with dense-stream conveyance and apparatus for carrying out the method. While test pressure is being applied and after an appropriate hold time, all piping joints, valves, flanges, etc. In addition to the new pressure measurement method by means of precision pressure gauges, resulting in simplification and improvement of the measurement method using air, further amendments and additions for adjustment in line with the state of the art for pressure testing methods have been included in the new issue of this code of practice.

  ENSONIQ ASR-X PRO PDF

DE102005062161A1 – Gas pressure regulating and -messanlage – Google Patents

The Reversierungs-line system is technically complex, because of the large number of components and thus cost-intensive and requires a large spatial extent of the GPRM system. Alternatively it may be regulated primarily of the flow or a priority of the pressure.

Acta Ple III These methods may therefore be particularly applied on arbeitwblatt piping which is not accessible for inspection purposes. In the second line network, it may be the water mains of a regional utility company.

Piston Pressure Gauges B 3. If the two line networks are designed for a different pressure level, the control device is upstream or downstream of a safety shut. The GPRM system includes a measuring device for measuring the flow.

In legal metrology in the gas high-pressure area currently time series circuits in particular turbine and ultrasonic flowmeters are used. Master pressure gauges category min.

Gas-Druckregelgerät RMG |

Particle counter for use with viscous hydraulic fluid is situated downstream of pump drawing fluid with particles or air bubbles from tank and upstream of non-return valve and line leading back to tank.

Gas-Druckregel- und -messanlage nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass zwei Messeinrichtungen Gas pressure regulating and -messanlage according to claim 1 or 2, characterized in that two measuring devices 6a 6ab hintereinander in den Leitungsstrang B one behind the other in the cable portion 1 1.

The GPRM plant may comprise a device for gas quality determination, so that the energy flow is determined. Zudem ist die Anlage wartungsfreundlich.

Water may also arbeitsblatr replaced by other suitable liquid media; below, reference is only made to water. Method and device for testing the tightness of the main air supply line in railway vehicles.