RMA-monoblock-insulating joints

Transcription

1 RMA-monoblock-insulating joints - are boltless, rigid pipeline components, factory-welded and ready for installation - a design which has proven successful throughout the world even for highest requirements - maintenance free - suitable for underground installation without the need for special precautions or for above ground installation - absolutely no impairment due to external influences Mechanical properties Electrical properties Calculation Scope of manufacture Scope of application - the excellent mechanical properties are achieved by a rigid design of statically favorable form, using thermosetting plastics free form cold flow as insulating materials - the welded unit provides a safe and reliable connection even over extremely long period of operating without the risk of the secured and locked unit loosing or separating - countless tests, prototype tests and empirical data gained during the course of many years of practical operation confirm the soundness and correctness of the complete welded design - the dimensioning and practical arrangement of the insulating sections within the overall design in addition to technical production factors, in conjunction with insulation materials of a suitable quality, result in the ideal overall electrical behavior of the insulating joints - large external insulating, thus eliminating the possibility of sparkover - very good dielectric strength, substantially greater than is the case with conventional insulating flanges - the average electrical resistance, measured at V DC, exceeds Mohm - a decisive factor in safe operating behavior, however, is linearity between the voltage applied and the resistive leakage current - according to DIN 2, TRBF, ASME Code and other international standards or in accordance with specific requirements - if no other regulations are made, the RMA company standards (DIN standards) are valid. Thus for the calculation and for the strength characteristics of the design the working pressure, reps. the maximum test pressure is decisive - additional forces such as bending moments and tensile forces etc. must be specified by the customer - basically, all components of forces and force values occurring can be taken into consideration during design calculation - a uniform assessment, valid simultaneously for all applications and requirements is not possible in practice - unrestricted, i.e. extending beyond the data and tables given - the numerical values specified in the brochure are based upon assumed standard versions - deviations and matching to specific operating conditions may be implemented at any time - suitable for flow media for instance as mineral oil, crude oil, kerosene, gasoline, propane, butane, natural gas, coal gas, ethylene, nitrogen and drinking water etc. Media such as sour gas and oxygen necessitate special materials and design bases - please always specify the medium and operating conditions - standard versions up to maximum C constant temperature - special versions for district heating up to 149 constant temperature Cobalch ApS Hejreskovvej 24 DK-3490 Kvistgård Denmark Tel.: Danske Bank: IBAN - DKK: DK EUR: DK Swift code: DABADKKK CVR nr. DK06143 cobalch@cobalch.com

2 RMA-monoblock-insulating joints Materials External coating Internal lining Tests/Inspections - pipes, e.g. in accordance with DIN, API, ASTM-A and other standards - seamless rings made of plate material or of forged quality, depending upon requirements and design calculations - seals of aging-resistant materials, e.g. buna N, viton, EPDM and other materials - insulating materials made of tried and tested materials with application - specific properties - unless otherwise specified, we apply PUR T (Polyurethane) acc. to DIN 3061 as a standard - other types of coating are possible according to agreement and purpose - examples: Bitumen primer, Coal Tar Epoxy, only Epoxy resin and others - as per standard without lining - virtually all types of lining can be applied upon agreement, depending upon intended purpose - electrically conductive media and deposits require an appropriate internal lining - according to the agreed requirements - usually: * a strength and tightness test with water * an electrical breakdown test, with 0 V/1 minute, AC, 50 Hz (both before and after the hydrostatic pressure test). In special cases up to V/1 minute * an electrical resistance test, standard V. In special cases V DC * checking the material certificates * evaluation of the destructive and non destructive tests * dimensional checks - depending upon the basis of the order, the tests are conducted either by our quality assurance department, by an official acceptance testing agency, by the customer himself or by an acceptance testing company authorized by the customer Qualifications for - component testing in accordance with German regulations ( Vd TÜV 1066) insulating joints - stress tests and bending tests - multifunctional prototype tests in all ranges up to 60 - and other quality assurance tests Cobalch ApS Hejreskovvej 24 DK-3490 Kvistgård Denmark Tel.: Danske Bank: IBAN - DKK: DK EUR: DK Swift code: DABADKKK CVR nr. DK06143 cobalch@cobalch.com

3 Performance tests - are important as regards continual further development and proving the design concept - a few examples Tensile and compression test on an insulating joint nominal bore 200 mm and nominal pressure 64 bar. Bending test with simultaneous internal pressure of 6 bar on Monoblock insulating joints, type IK, 38, ANSI 0, bending force 18 Mpm. Voltage test on an insulating joint nominal bore 0 mm and nominal pressure 25 bar. Cobalch ApS Hejreskovvej 24 DK-3490 Kvistgård Denmark Tel.: Danske Bank: IBAN - DKK: DK EUR: DK Swift code: DABADKKK CVR nr. DK06143 cobalch@cobalch.com

4 Insulating coupling Type IK PN 10 - PN 100 IK PN 10/ PN 25 PN PN 0 PN 100 mm mm mm kg mm mm kg mm mm kg mm mm kg mm mm kg 1 1 1/ / see type ET - on request type IK also possible Scope of application Despite general design in accordance with DIN standards, the ASME code or other standards may be taken as basis on requirements Scope of manufacture The above data refer to insulating joints designed and manufactured in accordance with DIN standards. Calculation and design in accordance with DIN 2, part 1 (gas up to bar) and DIN 2, part 2 (gas over bar), (incl. TRBF 301), or on the basis of other requirements covered by the above groups. Safety faktor S= 1,8 (F=0,55) Work tests Technical variants Materials Surface Testing pressure, standard = 1,5 times nominal pressure or operating pressure Available in larger nominel diameters and pressure ratings on request Electrical test, standard = 0 V/1minut ( 50 Hz) AC Electrical resistance test, standard V DC Other versions and designs available on request Please state pipe connection dimensions and connection material by request PUR coated outside Cobalch ApS Hejreskovvej 24 DK-3490 Kvistgård Denmark Tel.: Danske Bank: IBAN - DKK: DK EUR: DK Swift code: DABADKKK CVR nr. DK06143 cobalch@cobalch.com

5 Insulating coupling Type IK ANSI Class Class 600 IK ANSI 150 ANSI 300 ANSI 0 ANSI 600 mm mm mm kg mm mm kg mm mm kg mm mm kg 1 1 1/ / see type ET - type IK on request Scope of application Even though the general construction are DIN standard, ASME code or other standards can be used as specification basis Scope of manufacture Above data refer to insulating couplings designed according to ASME Code Section VIII, Div.1. Constructions factor F= 0,5, other factors are possible Work tests Technical variants Materials Surface Testing pressure, standard = 1,5 times nominal pressure or operating pressure Available in larger nominel diameters and pressure ratings on request Electrical test, standard = 0 V/1minut ( 50 Hz) AC Electrical resistance test, standard V DC Other versions and designs available on request Please state pipe connection dimensions and connection material by request PUR coated outside Cobalch ApS Hejreskovvej 24 DK-3490 Kvistgård Denmark Tel.: Danske Bank: IBAN - DKK: DK EUR: DK Swift code: DABADKKK CVR nr. DK06143 cobalch@cobalch.com

6 Insulating coupling Further versions Type IK Insulating coupling with flanges in one end or both ends. Ø D Ø D Insulating coupling with connection for measuring and spark gab. Ø D Insulating coupling for highest specificationsdemands in large dimensions and high pressures. Technical modifications reserved Cobalch ApS Hejreskovvej 24 DK-3490 Kvistgård Denmark Tel.: Danske Bank: IBAN - DKK: DK EUR: DK Swift code: DABADKKK CVR nr. DK06143 cobalch@cobalch.com