Tag Archives: Desander

27Aug 2012

Vacuum Degasser drilling fluid DC-mud cleaning

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The degassers are used to clean the gas in the drilling fluid, to ensure the drilling fluid property relatively stable, to guarantee the steady operation of swirlers. The degassers can be grouped into two kinds: ordinary pressure type and vacuum type. The ordinary pressure degasser is to use the centrifugal to take out gas to invade the mud, with the help of centrifugal force to make the mud spraying in the jet tanks and striking on the wall to make gas releasing. The vacuum degasser is to use the suction of the centrifugal, forming negative pressure in the vacuum tanks, under the action of drilling fluid at atmospheric pressure, through the suction pipe into the hollow shaft, then by umbrella piece of around the hollow shaft assembly, they jet to the skin of tank.

the picture of factory

Vaccum Degasser  is used to remove the small entrained gas bubbles left in the mud by the mud/gas separator. These units are positioned downstream from mud/gas separators, gumbo removal equipments (if utilized), shale shakers and mud conditioners (if utilized), while hydrocyclone desander and follow in the arrangement. decanting centrifugals follow in the arrangement.

When to use vacuum deaeration?

1.
2.3.		 In installations with many branches and low flow rates.
For small temperature differences between supply and return. A vacuum degasser is not limited by the fluid temperature.
If a deaerator cannot be mounted on the installation for practical reasons. A vacuum degasser can be connected to almost every part of an installation		 
 TangShan Dachuan Mechanical Equipment Co., Ltd. is a company focuses on the production, sales and after-sales maintenance service of solid control equipment of petroleum drilling (not excavation). The main products are mud vibrating screen, vacuum degasser, desander, disilter, mud cleaner, mud gas seperator, mud agitator, desander pump, shear pump, centrifugal, flare lgnition device, mix funnel, jet mud mixer, mud tank, water tank, diesel tank, etc.
We will always supply the drilling fluid system, the parts and the technology service to ensure the efficiency in the production of our customers. Our tenet is, making the advanced technology, ensuring the good quality, and offering the best service.
advantages

1The water ring type of the vacuum degasser in the process of working, always in the constant temperature to work, the performance of safety is high.

2 Use the belt to drive, avoid the complexity of the deceleration institutions.

3 Two levels of the separation gas and the tank is the assembly, the structure is compact.
4 the mud through the window of the trochanteric spray to the wall of the tank, the effect of the degassing is good

27Aug 2012

The structure of the centrifugal

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DCLW horizontal type helical-conveyer centrifugal is a mechine to separate the soild particles and liquid or separate the liquid and mixture mixed in the liquid by centrifugal force. The main function of centrifugal is to separate the liquid and solid particles in the suspension, or to separate the two kind of different liquid with different density which can not dissolve in each other in the emulsion. And also, can be used to remove the liquid from the mixture of liquid and solid. Some sedimentation centrifuge also can classificate the solid particles in the fluid with different density or granularity by identify the different sedimentation velocities.        

The main components of the spiral sedimentation centrifugal

1 The drum

The drums usually made of the drum barrels and the end covers, the drum barrel conical part is easy to abrade, in order to reduce the wear, there are some fillets along the line. There is a pivot on the drum big end, it is convenient to support the base bearing. The pivot connection with the drum by the flange, the end cover has a overflow month, the other end has a small end cover connection with the small end to support on the bearing.

2 Rotational flow propeller

The rotational flow rotational made of helical blade, inner tank, Charging bulkhead and the shaft neck. The helical blade take measures of abrasion resistant, such as; the abrasion resistant alloy, abrasion resistant plastic, and ect.

 3 The overload protection device

The main engine of the centrifugal provides the separation power, at the same time provide the power to the screw conveyor, when transport a large number of desiltings or the metal foreign body drop in the drum inside card main screw, it can maybe destroyed the planet differential. In order to prevent the spiral and the differential mechanism are damaged, the centrifugal specialized the overload protection device. The over load protection has the mechanical, mechanical hydraulic, electronic mechanical and the electronic overload protection device and ect, but the mechanical is widely used.

4The rotation device

Now, the rotation device of centrifugal are widely used the planetary gear rotation device, and the involute gear differential mechanism is the primary, the 2k-h is popularly.

5 The hydraulic coupler

In order to control the overload of the centrifugal , and make it smooth starting, the movement meet the requirement of the speed regulation, so in the rotation system of the centrifugal is widely used the hydraulic coupler.