Start the centrifuge temporarily to check the rotating direction. Change the phase conductors of the motor if the rotating direction is not correct.
1). Start and run centrifuge back motor in short time to observe whether the gearbox rotates in a correct direction, and make sure there is no adnormal condition occured.. Seen from the small end of the bowl, the gearbox shall rotate in counterclockwise.
2). Start and run centrifuge main motor to observe whether it’s pulley rotates in the correct direction, and make sure there is no adnormal condition occured. Seen from the small end of the bowl, the pulley shall rotate in counterclockwise.
3). Start in inching feed pump to observe whether it rotates in a correct direction. Observed from the end of the motor, the pump shaft shall rotate in clockwise.
Notice: ① Cut off the power immediately if the motor does not run after power to avoid it burn down
② When start the centrifuge, check whether the motor work continuously without abnormal noise. If the two motor could not work synchronously, operator should immediately shut
down the centrifuge for trouble shooting and then start the centrifuge again.
③ Motor is not allowed to start over five consecutively times in the cooling condition; When restart the motor after stop, it is not allowed to start over three consecutively times in the hot condition.
Ⅲ. No-load running
Start the centrifuge according to the operating steps, but do not start the feed pump to make it run without load. Check whether there is abnormal noise, vibration or heating. Make sure that the temperature rise of the bearing base is not over 35℃ after 2-hour running. If the condition permitted, measure the bowl speed and vibrating force of the bearing base and make sure that the bowl speed was not less than 97% of the rated figure and vibrating force was not over 7.1mm/s.
Ⅳ. Load running
Turn on centrifugal according to the operation steps, after it reaches the set speed, turn on the feed pump. Check and see if there is any abnormal situations e.g. abnormal vibration, noise, or heating, etc…
Choose the suitable pump feeding capacity according to the mud density & viscosity, and the performance requested to reach. DO NOT increase feed capacity sharply; it may cause block or the centrifuge and hold on the screw propeller badly.tumblr_m7aozdm0sr1qmyjkk

GN solids control Basic requirement of disassembly and assembly.
(1). Disassembly
A. Not allowed to hammer directly onto centrifuge parts, not allowed to separate the connecting surface between parts with tools like screw drivers.
B. Must use the dismounting holes or pulling tools on centrifuge parts when disassembly.
C. Not allowed to heat roller bearing with welding torch.
D. When dismount the parts with dismounting holes on flanges, use forcing screw with level 8.8 or above.
E. Mark the matching parts with compact points before disassembly.
(2). Assembly
A. Assembly work should be done in clean workshop with no metal particles or powers in air.
B. Carefully clean all parts and air flush off all iron scraps and dusts from lubricate holes, blind holes, counter bores.
C. Inspect fitting surface and joint surface of parts, and polish wounds and scratches on the parts with fine oil stones and smooth cut files.

A.Disassembly feed tube:
1)Disassembly feed tube
2)Disassembly Bolt & Nut On feed tube
3)Push out feed pipe
B. Disassembly narrow V belt
1)Disassembly motor cover
2)Loose nut for fixing motor
3)Rotating adjust screw , shorten distance
4)Pull out narrow V belt
C.Disassembly gear box
1)Lift gear box , disassemble back-drive motor, remove coupling between motor and gear box
2)Disassembly nuts between gear box and connection part
3)Remove gear box, pull out spline shaft
D.Remove centrifuge main body
1)Open top cover of collect box
2)Disassembly locating pins and nuts on bearing base both end
3)Lift centrifuge bowl assy and remove it tumblr_m97fcgTGQM1qmyjkk

In July in the north of China is a hot season, but the GN solids control workers who still hold on the production line, hot only to grasp the equipment ready, sent to the client as soon as possible, better realize his value. After The customer inspect site work my company oil sludge sand processing system, can more firmly believe that champions league in oil field strength in the field of environmental protection, at the same time also give high affirmation.
Oily sludge treatment system, mainly dealing with oily waste drilling platforms, including oil/water, oil, sludge, etc. GN  solid control according to the characteristic of oily waste in r&d and manufacture of unique, mainly includes the following several main structure.
Feeding unit: 1) oily sludge use oily waste on the screw conveyor in big funnel, again through the screw device to mixed evenly inside the tank are mixed. Screw of the funnel, transmission capacity and mixed tank can be customized production according to customer requirements.
2) flocculation unit: the unit of chemicals can be dispensed by the automatic control system according to the clients due to the proportion of matching, and then through a screw pump, the potion into mixed cans, mixed with oil waste.
3) the solid-liquid separation unit: this unit is made up of a high G of drilling fluid shale shaker and special mud centrifuge. Mixed with good oil bearing waste by screw pump pump to the shaker screen above the first, the big screen out particles, and in waste pulp centrifuge for further separation.So that you can maximize the crude oil in the wastes of isolated and stored into the tank.
Welcome there is oil sludge, joint station tank bottom sludge, sludge treatment of offshore drilling platform abandoned business customers to the company.

mud cleaning unit

  1. The screw conveyer is overload or out of power.
  2. The screw propeller overload will cause back drive motor current overload, it will cause the the power supplier cut off. Oe if there are other reasons caused cut off of the power suppler, the screw propeller will be blocked. Operater should solve the problem per trouble shooting.
  3. Overload of the bowl
  4. The bowl overload will cause hydraulic coupler fusible plug be melt. The transmission oil inside the hydraucli coupler will flow Main motor will be disconnect with hydylic coulper and the bowl cannot be drived. In this condition, the main power supply will not be cut off automatically. Centrifuge operaters should stop feeding pump firstly, and then stop the power supplier. After that, change fusible plug and transmission oil. After that, open the flush pump to clean out the bowl inside, otherwise, it may cause blocking of the screw propeller.
  5. Attentions for stop-off
  6. Before stop off the centrifgue, be sure to clean the bowl inside thoroughly. Otherwise, when you start the centrifuge next time, the screw propelelr may be held on and could not rotate.
  7. ATTENTION: Most of the common centrifuge broken down is caused by incomplete flushing.
  8. When stop centrifuge in winter, or stop centrifuge for a long time, be sure to open collecting box top cover, remove the drain bolt at centrifuge big end cover, and drain out all water and fluids inside the bowl and hoses, to prevent freezing.
  9. Operator DO NOT allow to leave the site until the centrifuge bowl completely stop rotating.
  10. VFD Control Panel Notes
  11. Layout of VFD control cabinet
  12. The VFD control cabinet is separated with centrifuge, and should be mounted nearby the centrifuge and convenient for operation. In order to make it easy for operation and observation, it is better the VFD cabinet located within 5m far away from the centrifuge. Max. the distance should not over 10m. And cover the VFD cabinet with shade to provent rain or sunshine.

Cable size

  1. User prepare suitable length cables per the final VFD control cabinet location. Centrifuge is connected to VFD control cabinet with thess cables: main drive motor, back drive motor, feeding pump motor, sensro device, and power supply. Cable sizes are as following:
  2. 90kw main drive motor cable 3×70mm2+1×35 mm2
  3. 37kw back drive motor cable 3×25mm2+1×16 mm2
  4. 22kw feeding pump cable 3×10mm2+1×6 mm2
  5. Sensor device cable 3×1.5mm2
  6. Power supply input cable 3×70mm2+1×35 mm2 2pcsgn centrifuge at iran oil show

After 30 days of intensive production, GN solid control for coalbed methane customized mud purification system smoothly completed, site quality inspection personnel is to run the test of each device, this is our final systemic test before delivery.In a few days the whole system will be sent to the customer site.
The completion of coalbed methane (CBM) mud solid control system is mainly composed of a high drilling fluid shale shaker, a mud cleaner and a centrifuge, mud slurry device and a jet of many sets of slurry blender and centrifuge pump, system assembly will soon after the completion of the CBM drilling for customers of the production tasks, the tight because customer construction project and first time use, to ensure the smooth construction of the customer, GN solid control will actively organize professional and technical personnel to the scene to do a good job of system installation and debugging and training.

GN MUD TANK
Due to the customer request to our system is very high, so the crown to solid control strictly according to customer’s special requirements for production and installation.Use shougang steel, choose Siemens, schneider electric components, selection of international brand vibrating motor, it is repeatedly mentioned customers requirements.Customer on-site inspection in the process of production of production progress, customers mainly to see our production process and production process requirements, read our front-line workers conscientiously working condition and equipment of the production process can make them more confident to choose crown solids control is the most correct choice.
GN solid control is a leading domestic solid control system suppliers, in coal-bed gas field has more than ten years experience of equipment service, services across the United States, snow, Germany Bauer, Mr Ryan, and many other international drilling company and coal bed methane developers.We have rich experience in coal bed methane drilling solid control system, better able to provide customers with turn-key project, for customers to create higher profit margins.