Two-position solenoid safety gas valves in aluminum housing (ÂÍ, ÂF series)

Transcription

1 Two-position solenoid safety gas valves in aluminum housing (ÂÍ, ÂF series) Preface General technical characteristics, m ounting and exploitation order, flanges, connection schemes of the position indicator Gas flow rate characteristics calculation method Resistance factor of solenoid valves and gas filters, relation between different units of measure Operating mediums Two-position solenoid safety gas valve for low pressure, coupling connection Solenoid safety gas valve, coupling connection, DN 5-50 mm Gas valve with coupling connection Gas valve with manual gas flow regulator, coupling connection Gas valve with position indicator, coupling connection Gas valve with manual gas flow regulator and position indicator, coupling connection Solenoid safety gas valve, flange connection, DN 5-00 mm Gas valve with flange connection Gas valve with manual gas flow regulator, flange connection Gas valve with position indicator, flange connection Gas valve with manual gas flow regulator and position indicator, flange connection Solenoid safety gas valve (ÂF series (normally opened), coupling connection) Solenoid safety gas valve with position indicator (ÂF series (normally opened) coupling connection)

2 TWO-POSITION SOLENOID SAFETY GAS VALVES IN ALUMINUM HOUSING (BH, BF SERIES) All valves are manufatured according to working European norms and standards (90/69/EEC and EN 6:00 Appliances burning gaseous fuels ). Solenoid safety gas valves are the shut-off and control safety devices, which are designed for usage in remote control systems of gas consuming installations and are intended to control streams of various gas environments, including hydro carbonated gases, gaseous phases of liquefied gases, compressed air, as well as other non aggressive liquids with viscosity 40 cst, max. Code structure: Â Õ Õ Õ - Õ Õ Õ Õ Õ Õ.  - series. Initial/source position: Í - normally closed (closed when de-energized) F - normally opened (opened when de-energized). Connection size (inches) 4. Valve type: Í - two-position  - three-position Ñ - for liquid medium Ì - with electric power drive T - two-position with slow opening mode 5. Max rated pressure, bar 0, - 0, bar 0,5-0,5 bar - bar - bar - bar 4-4 bar 6-6 bar 6. Auxiliary devices: Ê - equipped with manual gas flow regulator; P - equipped with external read- off position indicator (opened/closed) position; Å - explosion proof version of the valve 7. Power source 0 V AC, 0 V AC, 4 V AC; 0 V DC, 0 V DC, 4 VC. 8. AC frequency (50 Hz - only for AC version) 9. Climatic version: Ñ; Ñ; Ñ - for general industrial and explosion proof version. 0. Manufacturer's declaration

3 Pipe line connection types: - Coupling type for DN 5-50 mm; - Flange type for DN 5-00 mm. Flanges of the valves are manufactured in accordance with GOST 85, version, pressure 6 bar, max. For sizes of the counter flanges see figure -. General technical characteristics of solenoid safety gas valves Name of the parameter Opening time, s, max Closing time, s, max Operating environment temperature: - for gaseous environment/ air - for liquid non aggressive environments Leak-tightness class Degree of protection - general industrial version - explosion proof version Heat resistance class of electrical insulation of the solenoid (electromagnetic coil) from 5 Ñ Value Ñ above the freezing point up 90 Ñ À IP65 IP67 F Power supply voltage AC Power supply voltage DC Service term, years, min 0 V, 0 V, 4 V (50 Hz, 60 Hz) 0 V, 0 V, 4 V 9 Explosion proof version of solenoid valves has a special level of explosion proofness - increased protection against explosion, which is guaranteed by a special type of explosion protection ( hermetization by the compound m ) and ExmIIT4 marking. This type of valves can be applied in explosion hazard zones according to the provision 7.. of Electrical installation systems rules. Connection of the solenoid of the valve to a power supply system is carried out with the help of a cable encapsulated in a special compound. Standard length of the cable is 5 m. To increase the length of the cable, explosion proof type of the terminal block only shall be used

4 Mounting and exploitation order. Valves in aluminum housing. Safety requirements during mounting and exploitation GOST Max allowed pressure: -,0 MPa for valves without position indicator; - 0,9 MPa for valves with position indicator.. Before mounting clean the supplying pipe line from impurities and mechanical particles (scale, chip, pieces of electrodes etc). 4. To ensure safety and reliability of valve's performance it is highly recommended to install a gas filter on a supplying pipe line. Gas filter should be installed upstream the valve. Degree of filtration shall be 50 mkm, min. If a group of valves (two or more valves, or valves block unit) is mounted on a pipeline, the gas filter shall be placed only upstream the first valve in the line. 5. Should the valve's damage occurs due to the ingress of mechanical particles into the valve (scale, chip, pieces of electrodes etc.) the manufacturer has the right to terminate their guarantees. 6. It is forbidden to conduct mounting of the valve using electromagnetic coil (solenoid) as a lever. Pipeline load on the housing of the valve is not allowed. 7. Gas flow direction shuld coincide with a sign displayed on the valve's housing. 8. To s eal threa ds between valve housin g and a pipeline it is recommended to use a special sealing tape (ex: FUM fluoroplastic tape). When mo unting the flange connection s it is recommended to apply a special rubber gaskets (ex: medium hardness MBC type rubber; see Figure -). Counter flanges - steel, welded on type, according to GOST (see Figure -). Clamping torque: 0±5 Nm (for threaded bolts Ì0); 5±5 Nm (for threaded bolts Ì); 5±5 Nm (for threaded bolts Ì6). 9. Deviations of sealing surfaces of adjusting flanges from parallelism and perpendicularity should be 0, mm, max for each 00 mm of a diameter. DN, mm D d s d s D Figure -. Sheet rubber gasket

5 n apert. d Ra,5 Ra,5 Version (square flange) D D 6 D 5 h d H d â D D the contour O 45 D  O 45 Ra,5 h b  DN, mm D D D D 5 D 6 h d n d H d  h b B Ì (,5) Figure -. Female flange Nominal diameter of bolts and pins Ì (Ì0) Ì Ì6 0. To connect auxiliary devices, i.e. pressure switches etc. to the valve, use special through-holes with G/4 threaded connection on the valve housing. Recommended shape for the end of the threaded nipple, which is to be used to connect pressure switch - see figure -. To seal threads is recommended to use a special sealing tape (ex: FUM fluoroplasic tape).. Electric mounting/ dismounting shall be conducted when valve is de-energized.. It is allowed to rotate the electromagnetic coil about its axis, but only when the stop ring has been removed. It is also allowed to detach it from the housing of the valve. This does not influence leak-tightness of the valve.. To connect the valve to the power supply system flexible cable with vein section,0 mm? shall be used G / 4 0 5,5 Figure

6 4. Solenoid safety valves for general industrial and explosion proof usage can be manufatured both in power saving and standard performance versions. Power saving solenoid valve is performed by transducer module for power reduction (Peters-INDU Produkt, Germany). The valve opens (for BF types of the valves - closes) when voltage is supplied. 0 sec after the power is supplied to the valve power consumption is reduced up to 50 % of the initial and the valve goes into energy-saving mode. Consumption power of energy saving version of the valves - 0 V AC/DC. Standard version of the valve does note have transducer power for power reduction installed. Standard version of the valves has maximal power consumption, which is constant regardless the operation time. Electrical connection schemes of the general industrial valves of energy saving and standard versions are given in the table below: Type of the valve Supply voltage Electrical connection scheme General industrial, energy saving version 0 V AC 0 V DC N = PE L Tranducer modul for power reduction PCB General industrial, standard version 0 V AC 0 V AC 4 V AC N PE L VD...VD4 - Rectifiers Ru - Varistor General industrial, standard version 0 V DC 0 V DC 4 V DC = N PE L

7 Type of the valve Supply voltage Electrical connection scheme Explosion proof, energy saving version 0 V AC 0 V DC = N PE L Tranducer modul for power reduction PCB Explosion proof, standard version 0 V AC 0 V AC 4 V AC N PE L VD...VD4 - Rectifiers Ru - Varistor Explosion proof, standard version 0 V DC 0 V DC 4 V DC = N PE L 5. Exploitation of the valve shall be performed according with exploitation manual attached to the valve. 6. In long operation mode the winding of the electromagnetic coil can be heated as follows: - for energy saving version of the valve: up to 60 Ñ at an ambient temperature of the 0 Ñ; this, however, does not signify valve s malfunction; - for standard version of the valve: up to 5 Ñ at an ambient temperature of the 0 Ñ; this, however, does not signify valve s malfunction; 7. To ensure better convective heat exchange it is recommended, once in a quarter of a year, to check the tie-bar of supplying wires in contacts of terminal box and to clean electromagnetic coil from impurifications and from dust. 6. Letter P (ex: BF P, BH P) indicates a position indicator installed on the valve. The position indicator is an unductive, non contact type switch. For general description of the position indicator see table below

8 General technical characteristics of position indicator (general industrial version) Power supply voltage Operating current Power/voltage loss Connection Degree of protection Valves in aluminum housing V DC max 400 ma max,5 V Cabel õ0,4 mm length,5 m IÐ68 Type of the valve with position indicator Application of position indicators Climatic version Type of position indicator General industrial version Explosion proof version Ñ Ñ Ñ Ñ Ñ Ñ BK WF6--N--400-ÈÍÄ-ÇÂ--ÍÒ BK WF6--Ð--400-ÈÍÄ-ÇÂ--ÍÒ BK WF6--N--400-ÈÍÄ-ÇÂ--ÍÒ BK WF6--Ð--400-ÈÍÄ-ÇÂ--ÍÒ BK WF6--N--ÍÒ-5 BK WF6--N--ÍÒ-5 9. Electrical mounting of the position indicator for a general industrial version of the valve should be carried out according to the connection schemes -4a and -4b. Output transistor switch of the position indicator opens when the valve is energized. Active load connection scheme brown black blue Inductive load connection scheme brown black blue Figure -4à. Connection scheme of the position indicator with (npn - general + ) N-structure - - -

9 Active load connection scheme Inductive load connection scheme Figure -4b. Connection scheme of the position indicator with P-structure (pnp - general - ) 0. Electrical mounting of the position indicator for explosion proof version of the valves sould be carried out according with the connection scheme (see figure -6). Position indicator has a special level of explosion proofness (marking 0ExiaIICT6). The length of the cable 5 meters. Explosion proof valve with position indicator is supplied as a unit with Isolating Switching Amplifier (IM-Ex-R type, Turck, Germany). The switching amplifier IM- Ex-R is a dual channel device. If a main channel of the amplifier is damaged the position indicator can be connected to a co-channel. The signal of the amplifier can be read using co-channel output (see figure -5 and exploitation manual of switching amplifier). An output relay of the switching amplifier activates during valve's opening. The construction of the switching amplifier provides for simultaneous connection of two position indicators. The switching amplifier should be installed outside explosion hazard area (Amplifier's degree of protection IP0). The amplifier is designed for power source AC 0 50 V or DC 0 5 V. Position indicator blue brown Co-channel Isolating Switching Amplifier IM-Ex-R +8, V < 50 VAC/ YE/RD 0 0 VDC < A 8 < 500VA/ < 60 W Pwr YE/RD GN Figure VAC/ VDC < W - - -

10 Gas flow rate characteristics calculation m ethod Volume flow rate and pressure loss for valve/filter are calculated as follows: N 4 N 4 EXC. DN - Volume flow rate under operating conditions, m /h; - Pressure loss on valve/filter, kpa; - DN of valve/filter, mm; - Valve/filter resistance factor; - Ambient relative density under operating conditions, kg/m. 0 ( Ð +) R T EXC. Ð EXC. - Excess pressure before valve/filter, kg/cm ; R - gas constant, kg m; Ò=7+t ENV. - absolute temperature of the medium, K. Note: for methane (natural gas) R=5,8 kg m; for air R=9,7 kg m. Calculation example Example. Excess pressure before valve ÂÍ4Í Ð EXC. =0, kg/ cm Gas flow rate under normal conditions Q Í=00 nm /h Ambient temperature t ENV. =0?Ñ Calculate pressure loss on valve? Ð Ambient relative density: 0 (0,+) 5,8 (7+0) kg/m. Volume flow rate: Q QÍ 00 9 m Ð 0, EXC. / h. Pressure losses on valve: 0,9 0,87 9 0,057 DN 4 0, kpa

11 Example. Excess pressure before valve ÂÍÌ Ð EXC. =0, kg/cm Tolerable pressure loss on valve? Ð=0 kpà Ambient temperature t ENV. =5?Ñ Calculate potential gas flow rate Q Í Ambient relative density: Actual volume flow rate: 0 (0,+) 5,8 (7+5) kg/m ,057?P DN 0, Q= = = 689 m h?? 5,4 0,88 Volume flow rate under normal conditions: Q = Q ( Ð + ) = 689 ( 0,+) = 896 nm /h. Í EXC. /. Example. Excess pressure before filter FÍ / Ð EXC. =,5 kg/cm Gas flow rate under normal conditions: Q Í=800 nm /h Ambient temperature t ENV. =0?Ñ Resistance factor?=,9 Calculate pressure loss on filter Ambient relative density under operating pressure: 0 ( Ð +) R T Pressure losses on filter: EXC. Volume flow rate: Q Q= Í 800 = = Ð EXC. +,5+ 0 (,5+) 5,8 (7+0) 70 m /h.,9, ,057 DN 4 0, kg/m. kpa. For the valuations of a resistance factor for valves and filters in aluminum housing see pp -5 (tables)

12 Resistance factor for solenoid valves, BH series Resistance factor for gas filters, FH series Valve type DN, mm Resitance factor Filter type DN, mm Resistance factor ÂÍ / Í 5 5, FÍ / -....,5 ÂÍ / 4 Í 0 8,0 FÍ / ,4 ÂÍÍ coupl. ÂÍÍ flange 5,0 6, FÍ / -...., FÍ / , ÂÍ / Í coupl. 0,4 FÍ / ,9 ÂÍ ÂÍ / / Ì coupl. Í flange 40,7 9, FÍ / ,7 FÍ-...., ÂÍ / Ì flange, FÍ ,9 ÂÍÍ coupl.,6 FÍ-....,7 ÂÍÌ coupl. ÂÍÍ flange ÂÍÌ flange ÂÍ ÂÍ / / Í Ì ,5,6 4,8 9,4 5,0 FÍ... flange FÍ /... coupl. FÍ /... flange FÍ... coupl. FÍ... flange ,,6,0,,0 ÂÍÍ ÂÍÌ 80 9, 5,4 FÍ /... FÍ ,9,0 ÂÍ4Í ÂÍ4Ì 00 0,9 7,7 FÍ ,4 kgf/cm Torr (=mmhg) Pa Relation between different units of measure kgf/cm Torr (=mmhg) Pa bar mbar mmh O atm psi 75, ,5 0, , , , -,6 0, 0,00,,595 0,00 0, ,0 0 0, ,0 0,0-5 0, ,45 0 * bar,0 750, ,6 0,9869 4,508 mbar -,0 0 0, ,00 0,97-4 9,87 0 0,045 mmh O 0,000 0,0755 9, , , ,7 0 0,004 atm, ,0 0,05 0,5 0 4,696 psi 0,070 5, ,8-6, ,95 70,07 0,6805 *Example: bar = 000 mbar

13 Operating mediums: - Gaseous operating mediums: - Hydrocarbon gases (ÑÍ 4 - methane, ÑÍ 6 - ethane, ÑÍ 8 - propane, Ñ4Í 0 - butane/ isobutene/ mix of butane and isobutene); - Gaseous phases of liquefied gases; - Compressed air; - Í - hydrogen; - - oxygen; - N - nitrogen; - N O - nitrogen monoxide; - ÑO - carbon dioxide; - Inactive/ noble gases (He - helium, Ne - neon, Ar - argon); - Other non aggressive gases. - Liquid mediums: - Recovered water; - Benzine/ gasoline; - Diesel fuel; - Antifreeze solution; - Mineral oil with viscosity up to and including 40 cst; - Other liduid non aggressive mediums. IT IS FORBIDDEN to apply TERMOBREST solenoid safety gas valves for chlorine, ammonia/hydrogen nitride, masut/residual oil, mediums with high level of sulfuretted hydrogen, as well as for other aggressive mediums!