CN2257857Y

CN2257857Y - Automatic pressurizing underwater electric drill

Info

Publication number: CN2257857Y
Application number: CN 94229646
Authority: CN
Inventors: 杨干
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-09-24
Filing date: 1994-09-24
Publication date: 1997-07-16
Anticipated expiration: 2004-09-24

Abstract

The utility model relates to the innovation on the electric drill of the underwater construction. The utility model is characterized in that the interior of a gear wheel box is provided with an oil pump, a hydraulic automatic control device and a measuring electrode; the outside of a mechanical seal device is provided with a water sleeve. The utility model has the functions that the sealing liquid of the sealing cavity of the interior of the machine body automatic boosts the pressure along the incensement of the underwater depth, and has the pressure greater than the external water pressure; the utility model monitors the sealing condition at any time; the utility model automatically flushes the mechanical seal.

Description

Automatic supercharging diving engineering electric drill

The utility model is that a kind of innovation of the engineering electric drill of diving under water is created, especially finger is a kind of is provided with oil pump and Askania in diving engineering electric drill inside, make this electric drill adjust its internal oil pressure automatically with the variation of underwater penetration, thereby make mechanical seal be in optimum state, avoided muddy water intrusion internal body and inner fluid outwards to leak effectively.The utility model is made of component such as submersible motor, planetary gears, main shaft, oil pump, Askania, water jacket, measurement electrode.

Over year, diving engineering electric drill has obtained using widely in the foundation engineering construction surplus in the of nearly ten.The function of diving engineering electric drill is that can a pull the plug earth and water stirs into mud, thereby reaches the purpose that the stratum is crept into.Because all among mud, inner sealing fails again to reach perfect boundary for motor and gear-box, cause very quick-wearing destruction of gear and bearing in the gearbox so water and silt particle infiltrate easily, thereby have a strong impact on the reliability of complete machine work.Particularly when drilling depth surpasses 20 meters, existing diving engineering electric drill often turns round and was promptly destroyed by tens of hours in several hours.

In order to overcome the shortcoming of above-mentioned prior art, task of the present utility model is that a kind of automatic supercharging diving engineering electric drill is created in innovation, the oil pump by being arranged on this electric drill inside and the automatic adjusting of Askania, make this electric drill inner sealing reach perfect boundary, eliminate the defect that water and silt particle infiltrate gear-box easily, guaranteed the operate as normal of electric drill.

The technical solution that is proposed is: on the basis of known diving engineering electric drill, the original structure that keeps submersible motor and planetary gears is constant substantially, oil pump and Askania and water jacket have been set up in its underpart, component such as measurement electrode, the pressure that makes low pressure chamber is all the time than the big setting of external water pressure power, and high pressure chest pressure is all the time than the big setting of low pressure chamber pressure.Also utilize the outside of creeping into required clear water flushing one-level mechanical seal in addition.Thereby help the improvement of air-proof condition.In gear-box, be provided with measurement electrode in addition, in drilling process, just can measure the insulaion resistance of fluid so at any time, thus the sealing situation of monitoring diving engineering electric drill.

Structure of the present utility model, operating principle and characteristics, conjunction with figs. is described in detail below:

Accompanying drawing is a structural representation of the present utility model.

In the accompanying drawings, automatically supercharging diving engineering electric drill by submersible motor 1, planetary gears 2, main shaft 3, oil pump 4, cup packing 5, high pressure gauge 6, unidirectionally cut down 7, barrier film 8, big spring 9, set screw 10, cut down core A11, secondary mechanical seal 12, one-level mechanical seal 13, gear-box 14, high pressure chest 15, measurement electrode 16, low-pressure meter 17, low pressure chamber 18, cut down core B19, little spring 20, set screw 21, water jacket 22, water inlet 23, main shaft limbers 24 and drilling tool 25 and constitute.Oil pump 4 is installed in the bottom of gear-box 14, and under the driving of main shaft 3, the fluid of its output directly injects high pressure chest 15.Between gear-box 14 and the high pressure chest 15 cup packing 5 is arranged, between high pressure chest 15 and the low pressure chamber 18 secondary mechanical seal 12 is arranged, between low pressure chamber 18 and the water jacket 22 one-level mechanical seal 13 is arranged, between high pressure chest 15 and low pressure chamber 18, also have spool A11 and cut down core B19, also has barrier film 8 on the right side of low pressure chamber 18, there is connecting rod its inboard and cuts down core A11 and link to each other, and there are big spring 9 and set screw 10 in its outside, and the cavity in the diaphragm outside is communicated with water jacket 22.High pressure gauge 6 has oil duct to be communicated with high pressure chest 15, and low-pressure meter 17 has oil duct to be communicated with low pressure chamber 18.The spring of big spring 9, little spring 20 and single-phase valve 7 all should be debugged before the entry of diving engineering electric drill.Its adjustment method is as follows:

The motor of diving engineering electric drill is partly upwards vertically sling, tightened the spring of one way valve 7, transfer loose set screw 21, then start.Oil pump 4 begins oil is injected high pressure chest 15, at this moment unloads high pressure gauge 6 air of high pressure chest 15 is discharged, and treats that exhaust finishes to load onto high pressure gauge 6, and high pressure chest pressure P 2 will rise gradually.Under certain pressure, pressure oil will promote the spool B19 overflow that moves to left, and at this moment adjust set screw 21, make high pressure chest pressure P 2 be stabilized in 0.2mPa (P1=0 at this moment).Slowly transfer the spring of loose one way valve 7 subsequently, make P2 reduce to 0.05mPa, at this moment the oil of high pressure chest 15 begins to inject low pressure chamber 18 by spool A11 and one way valve 7, unloading low-pressure meter 17 then discharges the air of low pressure chamber 18, treat that exhaust finishes and load onto low-pressure meter 17 that low pressure chamber pressure P 1 raises thereupon gradually.At this moment transfer loose set screw 10.Under the effect of P1, the thrust that barrier film 8 will overcome big spring 9 moves to right, and moves to right by connecting rod drive spool A11.During to certain position, the oil duct of spool A11 will be closed voluntarily, and P1 will no longer rise.Make P1 be stabilized in 0.15mPa by adjusting set screw 10.After the oil duct of spool A11 is closed, high pressure chest pressure P 2 will continue to increase, when P2-P1=0.2mPa, and the spool B19 overflow that will move to left again.So far debugging finishes, and unloads two pressure meters, and blocks with oil and to close its oil duct.

After the entry of diving engineering electric drill, with the increase of underwater penetration, the water pressure P water in barrier film 8 outsides progressively increases.Under the effect of water pressure P water, barrier film 8 will promote spool A11 and move to left, and the oil inlet passage of low pressure chamber 18 is communicated with again, low pressure chamber pressure P 1 will increase thereupon, when P1-P water=0.15mPa, barrier film 8 will promote spool A11 and move to right, and the oil inlet passage of low pressure chamber 18 is closed again.High pressure chest pressure P 2 will rise again once more subsequently, and when P2-P1=0.2mPa, the spool B19 overflow that will move to left is again got off the pressure stability of high pressure chest 15.

When creeping into when finishing to mention diving engineering electric drill, its underwater penetration reduces gradually, and at this moment water pressure P water progressively reduces, under the effect of pressure reduction, barrier film 8 will promote spool A11 and move to right, and the oil inlet passage of low pressure chamber 18 is closed, and the volume that makes low pressure chamber 18 that moves to right of barrier film 8 increases, low pressure chamber pressure P 1 will reduce, make P1-P water=0.15mPa, along with reducing of low pressure chamber pressure P 1, the spool B19 overflow that will move to left, high pressure chest pressure P 2 will reduce, and make P2-P1=0.2mPa.

When mentioning diving engineering electric drill when cutting off the electricity supply, the sound piece of mechanical seal has not had relative motion, generally is not easy to leak.

In order to ensure the cleaning and the performance double shielding effect of fluid, the fluid of this machine low pressure chamber 18 can not return high pressure chest 15, even one-level mechanical seal 13 was lost efficacy like this, secondary mechanical seal 12 still can independently play a role in a short time.

In order further to strengthen sealing effectiveness, this machine also in the arranged outside of one-level mechanical seal 13 water jacket 22.Be used in the clear water that creeps into and flow into water jacket 22,, flow out from drilling tool 25 through main shaft limbers 24 by water inlet 23.The working media of one-level mechanical seal 13 no longer is a muddy water like this, but clear water.

In order to monitor sealing effectiveness, this machine also is provided with in the bottom of gear-box 14 measures electricity level 16.In drilling process, just know by the insulaion resistance of measuring fluid whether diving engineering electric drill intakes like this.

The utility model advanced design, good manufacturability is convenient to produce in enormous quantities and is made, and is simple in structure, reliable, M R easy to operate, its compliance to deep well drilling is stronger, more can be widely used in the foundation engineering construction.

Claims

1. automatic supercharging diving engineering electric drill, constitute by main parts size such as submersible motor 1, gear-box 14, planetary gears 2, main shaft 3, mechanical seals 12,13, it is characterized in that: in the bottom of gear-box 14 inner planet gear mechanisms 2 oil pump 4 and Askania 26 are set, at the arranged outside water jacket 22 of one-level mechanical seal 13.

2. automatic supercharging diving engineering electric drill according to claim 1, it is characterized in that: the inboard of Askania 26 septations 8 links to each other with the fuel feeding spool A11 of low pressure chamber 18, and the outside of barrier film 8 and the cavity of water jacket 22 are communicated with and bear the pressure of spring 9.

3. automatic supercharging diving engineering electric drill according to claim 1, it is characterized in that: it is a plunger that Askania makes the spool B19 of high pressure chest 15 overflows for 26 li, the one end is communicated with high pressure chest 15, and the other end and low pressure chamber 18 are communicated with and bear the pressure of spring 20.

4. automatic supercharging diving engineering electric drill according to claim 1 is characterized in that the overhanging end of main shaft 3 passes the centre bore of water jacket 22.