08 17 Quality Products for Mechanical & Fluid Power EQUIPMENT FOR HAZARDOUS AREAS AKPV Bellhousing Cooler
AKPV Hazardous Area Cooler Equipment for Hazardous Areas Cooler bellhousing VDMAcompatible, resistant to pressure peaks. Cooler bellhousings are well established in the field of oil hydraulics. The company JBJ Techniques are pleased to present a range of product that goes far beyond a “facelift” and offers users substantial advantages. Developed from the KPV product range first manufactured by our principles R+LHydraulics, JBJ, along with R+L are the first to bring cooler bellhousings with prismatic standard cooling elements which can be selected from catalogue information. The new series name is “AKPV” which has been specifically manufactured to satisfy ATEX Directive 2014/34/EU, Ex h IIC c Ts-20°C…T140°C Gb Ux and harmonised standards:- BS EN 1127-1, BS EN 60079-0, BS EN ISO 80079-36, BS EN ISO 80079-37, BS EN 14986 ISO 14694. The first cooler bellhousings on the market were usually fitted with finned tubes, which act as heat exchangers. However, due to the poor thermal design were only deemed suitable for leakage cooling. The high efficiency of the prismatic cooling element gives real possibilities for increased performance and also lends itself to full flow cooling as per the attached diagrams. Care must be taken when applied to low pressure return lines as often the operation of the system will generate pressure spikes which cannot generally be detected with conventional pressure measuring gauges. To combat this, R+L have extensively dynamically fatigue tested the prismatic element for over a 6 million stress cycles from 0 – 16 bar at a constant frequency of 2 Hz.As a rule, 1 x 10 stress cycles will be considered sufficient. However, since the number of pressure peaks per time period can be 6 extremely variable in isolated cases, it is difficult to determine which service life 10 stress cycles 6 correspond to. Considering this, testing has been extended to 3.5 x 10 stress cycles. In all cases, test results have been satisfactory. In addition to this, each single heat exchanger has been tested at 40 bar during production, this is equivalent to the highest authorised static pressure for cooling elements. Also, great attention has been paid to protecting the cooling element against external damage by embedding it within a sturdy housing on theAKPV cooler. CoolingCapacity It is generally accepted that, in the absence of an external source of thermal input, then heat loss of 30 - 40% of the equipment installed power will be required given that themotors and pumps are of average efficiency.Aproportion of this heat is generally radiated by the individual components within the system, especially the tank, and so the cooler bellhousing will be required to maintain oil temperature at the required level. This can also be effected by the system application, for example in machine tools or inmobile operational cases, an average cooling power of 20 – 30%of installed power is required. As shown in the cooling power of the AKPV fulfils this requirement to the full. The values shown apply to a Δt of 40K and to the optimum flow of oil. In the case of figure 1 lower or intermittent oil flow a separate cooling systemmay be necessary, this can easily be achieved with theAKPV cooler. The interdependence between the cooling power and the oil flow is shown within . The specific values per 1K Δt allow a simple conversion of the actual cooling figure 2 power by multiplication of the respective Δt. Compatibility to VDMA24561 Another important feature of the KPV/AKPV is the ability to retrofit into existing systems should existing installations change and the need for cooling be required to fit the new requirements, the cooler bellhousing can be replaced within the same size envelope, either a rigid bellhousing or a bellhousing fitted with damping flange, which means that pump andmotor position will not be altered and even pipework should remain the same. KPV coolers can be supplied either as a rigid version or as a version with integrated noise damping flange. AKPV cooler bellhousings are only available in rigid format. Correction factor for the ∆p-values depending on other viscosity in cSt cSt 15 22 32 46 68 100 150 220 460 k 0.64 0.73 1 1.28 1.62 2.65 3.9 6.9 17.1 0 10 20 30 40 Input 1 bar Dynamic fatigue strain tests with cooling elements for the KPV series coolers 6 at 16 bar with 1 x 10 stress cycles and f = 2 Hz 0 1 2 3 4 5 01 5 sec Fig. 1 Specific cooling power P/t of the series KPV depending on oil flow Q and temperature difference Δt = 1K (oil inlet to air inlet). 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 KPV350 KPV300 KPV250 KPV200 Oil flow [l/min] Specific cooling capacity P/Dt (W/K) 0 10 20 30 40 50 60 70 80 KPV200 KPV250 KPV300 0,5 1,0 1,5 2,0 2,5 3,0 Pressure drop p [bar] Oil flow Q [l/min] KPV350 0 0 10 20 30 40 50 60 70 80 Fig. 2 Pressure drop of cooler matrix at the oil viscosity of 32 cSt.
Footbracket optional *Vertical installation only with connection flange D5 B2 B1 B L 1D 2D H G L1 L2 B3 B 2D 1D B2 B1 H A A1 A5 A6 A2 A4 1H M L3 3B L D2 D1 D4 D3 Lateral cooling air discharge possible (Cooler bellhousing rotated 90°) Cooling air entry Noise damper Air discharge Typ Type Footbracket PTFS Footbracket PTFL A A1 B B1 B2 H A A1 B B1 B2 H KPV200 – – – – – – 210 180 90 20 60 112 KPV250 250 215 230 125 60 155 250 220 110 40 60 132 KPV300 300 265 270 150 75 185 290 260 120 40 80 160 KPV350 350 300 305 175 90 235 – – – – – – Type Frame size Power Shaft P[kW] D x l L L1 L2 L3 A2 A4 A5 A6 B3 H1 D1 D2 D3 D4 D5 M G KPV200 80 0.55 19 x 24 100 88 10.3 -6 ∗ 122.5 205 141 241 70 180.5 200 130 165 145 11 10 G½ 0.75 110 118 90 S+L 1.1 24 x 50 124 1.5 128 KPV250 100 L 2.2 28 x 60 120 108.5 26 6 144.5 267 174 326 102 199 250 180 215 190 14 12 G¾ 3.0 124 128 112 M 4 135 148 175 KPV300 132 S+M 5.5 38 x 80 144 128.5 6 10 168.5 267 200 350 126 234.5 300 230 265 234 14 12 G¾ 7.5 150 155 168 196 KPV350 160 M+L 11 42 x 110 188 161 4 7.5 198 316 228 403 156 253 350 250 300 260 18 16 G¾ 15 204 180 M+L 18.5 18 x 110 228 22 256 AKPV Hazardous Area Cooler Equipment for Hazardous Areas Both versions having the same overall dimensions. These units can bemounted horizontally IMB35 and IMB5 and cooling air exhaust can be directed either vertically or horizontally. Equally the cooler can bemounted vertically in IMV1 version.
to Large Combinations from Small Individual Components ensuring a continuing high quality service in which customers can have complete confidence. “ “ Drive line jbj Techniques is a specialist supplier of high-quality products for the mechanical power transmission and fluid power sectors. The company offers a high level of in-house expertise plus a huge selection of products to meet a very broad range of customer applications. From specification, through technical advice and manufacture to after-sales support, jbj Techniques provides a comprehensive and valued service to the power transmission and hydraulics industries. The company fields a UK-wide team of technical sales engineers to ensure that the business is close to its customers, and it enjoys excellent associations with European manufacturers, acting as sole UK distributor in many cases. jbj’s team is recognised for its expertise in the selection and configuration of hydraulic and mechanical transmission systems. Able to draw on an that extensive product range provides the building blocks for bespoke systems both large and small, the in-house design team offers a complete service, ranging from an assessment of customer requirements to full technical backup, including product specification, CAD based system design, system build and certification. Moreover customers can take advantage of jbj’s own machine-shop facilities and skilled engineers guarantee to quality and control costs. jbj Techniques provides one of the widest ranges of couplings available within the UK; mechanical power transmission couplings for a vast range of applications. Ranging from miniature couplings, all steel gear couplings, flexible spider couplings, shaft couplings, torque limiting couplings, disc and grid type couplings, ATEX compliant and shaft locking devices. Magnetic couplings for power transmission between hermetically sealed areas. However as extensive as the selection is, couplings make up a fraction of jbj’s portfolio. As power transmission specialists the company stock and provide gearboxes, clutches, pumps, hydraulic motors, flow meters, fluid power accessories including: cooling & heat exchange products, reservoirs, pipe flanges, seals and level indicators, as well as a variety of bellhousings and engine adaptors, to name just a few of the product categories. jbj Techniques Limited is proud of it’s relationship and reputation with customers and suppliers. The core client base is stable and loyal, which is testament to the quality of service provided by the company. A similar relationship exists with suppliers, ensuring a continuing high quality service in which customers can have complete confidence. Dampers Engine Adaptor Kits Hydraulic Adaptors Torque Limiting Couplings Tyre Couplings Anti-static/Flameproof Couplings Torsionally Rigid Couplings Torsionally Flexible Couplings Bellhousings Permanent Magnetic Couplings Torsional Couplings
01737 767493 info@jbj.co.uk www.jbj.co.uk quality products for mechanical & fluid power - registered in England No: 1185469 - jbj Techniques Limited is ISO certificated, committed to international coordination & unification of industrial standards. A range of products ATEX certificated to directive 94/9/E requirements You Tube Harmony Screw Pumps Pneumatic Motors & Starters Gear Pumps/Motors Axial & Radial Piston Motors Vane Pumps LSHT Motors/Geared Motors Splitter Gearboxes Planetary Gearboxes BDS Clutches BD Clutches & Gearboxes Oil Bath Clutches Flow Dividers Tanks/Accessories Fluid Level Indicators Flanges Mini Power Packs Coolers Pressure Intensifiers comprehensive range of componentswww.jbj.co.uk an excellence in engineering
registered in England No: 1185469 jbj Techniques Limited is ISO certificated, committed to international coordination & unification of industrial standards. A range of products ATEX certificated to directive 94/9/EC requirements 01737 767493 info@jbj.co.uk www.jbj.co.uk quality products for mechanical & fluid power You Tube jbj Techniques Limited 28 Trowers Way Holmethorpe Industrial Estate Redhill Surrey RH1 2LW. UNITED KINGDOM
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