Monthly Archives: August 2016

Screen installation for slurry separation plant

I am studying the Schauenburg product, and in 2016 BAUMA exhibation, I visited their booth, and impressed by their 3D experienced video to understand their slurry plant structure. The Below is the screen installation for their slurry separation plant.

Bring spring chairs at the support construction into the provided position and arrange it horizontal. The higher spring chairs were installed at the discharge side. Place helical compression springs at the spring chairs. Hoist of the dewatering screen basically with 4 ropes, which are fixed via clevis mechanical stop grommets. Use pulling harnesses to avoid damages via bevelled ongoing ropes at the painting resp. at the bonnets or splash guard.   Manoeuvring and sinking with caution of the dewatering screen over the spring to the spring chairs. Thereby check out that the centring pipes slide into the springs. Check out, if all springs are in the prescribed positions, before the holding ropes are full released. Remove clevis from the mechanical stop grommets.  Check downward deflection of the dewatering screen to constancy. Connect exciters preferable above the provided cable lashes electrically upside the dewatering screen lobbying water proofed branching point. In case that new cables should conducted up to the motor connection box, absolutely seeing that the junction box is closed water proofed again. (See for this separate installation indications special for exciters). The cable to the motors should so hang up, that they do not rubber during the operation to the vibrating parts. The exciters should electrically so locked together, that at a black out of one motor the second motor is automatically stop. The motors must rotate in the opposite direction, rotating direction see indication in the machine operating manual. Check out and make sure, that the distance between the vibrating parts and other construction parts is not less then 50 mm.

Brightway slurry separation plant with the classifying screen and dewatering screen, while fixed by wedge on the screen desck.

slurry separation plant

slurry separation plant

Brief Introduction about the Micro-tunneling Pipe Jacking Method

Brief Introduction about the Micro-tunneling Pipe Jacking Method

Micro-tunneling technology for trenchless installation of supply and disposal tunnels by pipe jacking method, ID200-ID3000
The main object is to find a balance between customer requirements and the requirements of nature and the environment.
The technologically advanced products allow us to make life easier for many people all over the world and use trenchless technology to conserve resource and focus on sustainability.
Machines that fit customer needs!
General speaking, there are 4 kids of micro-tunneling systems:
1. AugerPro system
2. Slurry System
3. EPB System
4. Hard rock system

Mirco-tunneling Grain layout

Mirco-tunneling Grain layout

microtunneling methold

microtunneling methold

AugerPro System is an economic micro-tunnelling solution for soft soil( sand, silt, clay) without boulders and with a very low groundwater level. It is suitable for small to medium diameters, and short to medium jacking lengths. The excavated soil is transported via Auger train to the start shaft; a spoil treatment is not necessary. The pipes are pushed in directly after the cutter head. The machine is easily operated from the control container on the surface. As a result of the laser -based guidance system, it can achieve a very high level of accuracy.

AUGERPRO SYSTEM

Micro-tunneling methold-AUGERPRO SYSTEM

Slurry System is essential in difficult soil with high ground water levels. It is suitable for very long distances and large diameters. In the cutter head, the excavated spoil is mixed with water and then transported to the surface, where water and spoil are separated again; the water then remains in the slurry circle.

Mirco-tunneling slurry job site

Mirco-tunneling slurry job site

1)Pipe
2)Control Container
3)Charge Pump
4)Mud Tank
5)Separation Plant
6)Start Shaft
7)Laser
8)Jacking Station
9)Discharge Pump
10)Intermediate Jacking Station
11)Steering Head
12)Trailer With Power Pack
13)Target Shaft
14)Flow Meter
15)Bentonite Pump
16)Generator

EPB system( Earth pressure balance shields) is that all non-stable ground require a support pressure to balance the earth pressure that is acting on the cuter disc. The excavated soil accumulates in the excavation chamber and , together with the driving force of the machine, builds the supports pressure. The spoil is transported out of the excavation chamber by a screw conveyor and is then brought to the launching shaft by conveyor belts or lorries.

EPB system

Micro-tunneling methold-EPB system

Hard rock system can be used in fractured and unfractured rock. In stable ground conditions, the machine is equipped with a gripper station to grip against the tunnel wall to move forward. In factured rock, the unstable tunnel wall is supported by pipes or segments.

 

 

 

SOLIDS CONTROL POEM

I am in the business of solids control equipment and solids control system.

Although equipment is cold, I’d like to bring life to the equipment as I am a vividly woman with a lot of hobbies, music, dance, swimming, tennis, etc.

Sometimes, I share some poem with foreigner, except for trading, I’d like to share Chinese culture with customers in different industries, oil and gas drilling, horizontal directional drilling, TBM, CBM drilling, etc.

POEM NAME:
The Charms of Niannu

POET: Shushi (Year 1083, when he was in 46, he wrote this poet. And he is the famous poet in our history for his bold and his heroic style)

*****
The waves of the mighty river flowing eastward
Have swept away the brilliant figures of a thousand generations.
West of the old fortress,
So people say, is Lord Zhou’s Red Cliff in the time of the Three Kingdoms.
The tumbling rocks thrust into the air;
The roaring surges dash upon the shore,
Rolling into a thousand drifts of snow.
The River and the mountains make a vivid picture—
What a host of heroes once were!

And I recall the young Lord then,
Newly married to the fair younger Qiao,
His valorous features shown forth;
With a feather fan and a silken cap
Amid talking and laughing he put his enemy’s ships to ashes and smoke.
While my thoughts wander in the country of old,
Romantic persons might smile at my early grey hair.
Ah, life is but like a dream;
With a cup of wine, let me yet pour a libation to the moon on the river.
*****

Dewatering unit

Brightway Dewatering Unit includes a contained automatic flocculation unit with pumps, polymer preparation tank and mixing system. Dewatering system uses coagulant and flocculants chemicals including Poly Aluminum Chloride( PAC) and Poly Electrolyte(Polymer) to coagulate and flocculate the solids in the fluid and make the slurry in a condition that centrifuge can separate the solids from the mixture more convenient. Cuttings generated in the dewatering system are discharged by the centrifuge in the corral; liquid is discharge straight to one of the buffer tanks.

decanter centrifuge

decanter centrifuge

The Dewatering suction lines could be connected to middle mud pit and all ES tanks.

The gathered waste water in the waste pit or the amount of the mud which the mud engineer wants to dump ( usually at the end of drilling sections) should be transferred to the ES tanks or the mud pit and from there could be processed by dewatering system.
The overall objective of dewatering systems is to process drilling waste. Typical applications are:
 Reduction of the liquid waste volume generated
 Recycling back into the active fluids system
 Disposal
 Release in an environmentally safe and cost effective manner.

The main aim is to reduce well costs, either through a reduction in fluid volume used during the well, and /or through a reduction in disposal costs.
Dewatering systems have become major factors towards “closing the loop” in the dry location or zero discharge concept. The displaced or excess drilling mud along with the excess location liquids produced on the dry or zero discharge location are channeled to the collection pit and placed in the storage system. The dewatering system is utilized to process the liquid waste from the active mud and the storage system. The cleaned effluent from the dewatering system can then be :
1) Returned to the active mud system
2) Returned to the drill water tanks for use as dilution
3) Treated further to acceptable regulatory standards for release to the environment