Model H2G for 2" flange size
Model H3G for 3" flange size
Download the Delta
Controls Model H2G/H3G Detailed Datasheet 
Application
The
Delta Controls H2G/H3G drilling system is used to produce the proper bore holes
through Claus Thermal Reaction Furnace refractory linings, for the HTP/HTX Thermocouple
and the HIR Infrared Temperature Transmitter. The hole must be located on the
centerline of the mounting nozzle, be of the correct diameter and be perpendicular
to the nozzle mounting flange. For the HTP Thermocouple, the drilling system
cuts the required counterbore recess in the top face of the refractory to contain
the support collar for the HRW refractory well, since collar must be positioned
below the inside surface of the reactor shell. This is done to keep movement
of the refractory from breaking the HRW protective well.
The diamond matrix core drilling bit is equipped with sleeve bearings that use
the inside surface of the nozzle to guide the drill on the centerline of the
nozzle. A smoothing tool, Model NSO, is used to prepare the nozzle for use as
the bearing guide. The NSO is a rotary tool which is equipped with carbide cutters
to remove any slag, excess weldment, buildup, etc. from the inside surface of
the nozzle.
For HTP/HTX thermocouple installations, this properly drilled hole permits the
HRW refractory well to be inserted into the proper position and depth whereby
the supporting collar rests in the counterbore beneath the inside surface of
the vessel shell.
For HIR Infrared Transmitters, the HRG drill system creates the properly centered
bore hole to insure that no IR energy is needlessly lost because of improper
alignment.
Note that attempts to position the drill by other means usually creates installation
or operational problems.
Specifications
|
H2G |
H3G |
| Drill Bit: |
Diamond matrix-coring type |
|
| Drilled Hole Size: |
1.65” (42mm) |
2.2” (56mm) |
| Recess Cutter Size: |
1.9” (48mm) |
2.6” (66mm) |
| Nozzle Size: |
1.85-2.65”(47-67mm) |
2.65-3.45”(68-88mm) |
| Refractory Thickness: |
Up to 20” (510mm) (standard) |
|
| Water Pressure: |
7.5 PSIG (0.5 Bar) minimum |
|
| Water Hose: |
5 foot (1.5M) basic; with ¾” female threaded female garden hose type fitting |
|
| Connection Adapter: |
“ |
|
| Flow Control Valve: |
Reduced port; brass |
|
| Nozzle Smoothing Tool |
Cylindrical; carbide teeth; 5/8”-11NC drive connection; fits on water swivel |
|
| Options: |
||
| Extension: |
Required for dimensions that exceed: |
|
| Water Hose: |
50 feet length |
|
| Drill Motor |
Available 115 VAC or 220 VAC |
|
| Diamond cutting fragments are embedded in a ceramometallic matrix. As the diamonds cut and as the hole progresses, the matrix wears away. Dull diamonds tear away and expose new sharp edged diamonds. The torn off diamonds are then mixed in with the refractory cuttings. The cuttings, with still hard diamonds, must be flushed away with water as they form. Flushing promotes rapid cutting, and straight drilling. Water also cools the bit and lengthens its life. |  |
Components included with the H2G/ H3G Drilling System:
Optional Items:
|
 |
Go to Delta Controls Model HTP Thermocouple Page
Go to Delta Controls Home Page
Go to Delta Controls Literature Page
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