CN113123776A - Gas pressure maintaining system for double-wheel stirring drilling machine - Google Patents

Abstract

The invention particularly relates to a gas pressure maintaining system for a double-wheel stirring drilling machine; the method is characterized in that: the device comprises a monitoring device arranged in a milling head, wherein the head part of the monitoring device is connected with an air compression station through an air pipe, the tail part of the monitoring device is connected with the milling head, a floater is arranged in the monitoring device, and the floater divides the interior of the monitoring device into an upper half part and a lower half part; compressed air is input to the upper half part of the monitoring device through an air pipe, oil in the milling head enters the lower half part of the monitoring device, and the compressed air in the upper half part is isolated from the oil in the lower half part through a floater in the monitoring device; the pressure of oil in the lower half part of the monitoring device and the milling head of the double-wheel stirring drilling machine is indirectly adjusted by adjusting the numerical value of compressed air output by the air compression station, and when the double-wheel stirring drilling machine enters the ground and is positioned in slurry, the compressed air output by the air compression station is adjusted by pressure feedback, and the pressure between the oil in the double-wheel stirring drilling machine and the slurry outside the double-wheel stirring drilling machine is adjusted by the monitoring device.

Description

Gas pressure maintaining system for double-wheel stirring drilling machine

Technical Field

The invention relates to the field of engineering machinery, in particular to a gas pressure maintaining system for a double-wheel stirring drilling machine.

Background

For a double-wheel stirring drilling machine, the working environment is often severe. For example, on the outside of a two-wheel mixer drill, there is a mud mixing material, and on the inside of the two-wheel mixer drill, there is a precision gear box and a hydraulic control motor. Since the cutterhead of the two-wheel mixer-drill rotates continuously during operation, a fixed sealing structure cannot be provided, and a dynamic sealing structure is created between the inner side and the outer side of the two-wheel mixer-drill. In order to ensure the reliability of the movable seal structure, it is common to provide oil injection on the inner side of the two-wheel mixer drill to balance the pressure between the inner side and the outer side of the two-wheel mixer drill. This ensures that the slurry mixture outside the two-wheel mixer drill does not enter the interior of the two-wheel mixer drill and damage the gearbox and hydraulic system.

However, as the drilling depth of the double-wheel stirring drilling machine is continuously deepened, the geological condition is more and more complicated, and the like. For the current double-wheel stirring drilling machine, higher requirements are put on the sealing device of the milling head. The original pressure balance and pressure maintaining systems on the inner side and the outer side are not very reliable, and meanwhile, with the development of the modern construction level, for the traditional method of adopting hydraulic oil as a key medium for pressure balance, long transmission time is needed for pumping the hydraulic oil from the ground into the double-wheel stirring drilling machine deep into the ground. That is, the current method for achieving the pressure balance by using hydraulic oil has many problems of unreliable pressure maintaining, untimely pressure maintaining feedback, inconvenient maintenance, and the like.

Disclosure of Invention

The invention aims to overcome the defects and provide the gas pressure maintaining system which can be used for quickly establishing the pressure maintaining system, adjusting the pressure value in real time and monitoring the oil state in the milling head of the double-wheel stirring drilling machine in real time.

In order to achieve the above object, the present invention is realized by:

a gas pressure maintaining system for a double-wheel stirring drilling machine comprises one air compression station and a monitoring device arranged inside a milling head of the double-wheel stirring drilling machine, wherein the head of the monitoring device is connected with the air compression station through an air pipe, the tail of the monitoring device is connected with the milling head of the double-wheel stirring drilling machine, a floater is arranged in the monitoring device, and the inside of the monitoring device is divided into an upper half part and a lower half part by the floater; therefore, compressed air is input to the upper half part of the monitoring device through the air pipe in the air compression station, and the lower half part of the monitoring device is connected with the milling head of the double-wheel stirring drilling machine, so that oil in the milling head enters the lower half part of the monitoring device, and the compressed air in the upper half part is isolated from the oil in the lower half part through the floater in the monitoring device; the pressure of oil in the lower half part of the monitoring device and the milling head of the double-wheel stirring drilling machine is indirectly adjusted by adjusting the numerical value of compressed air output by the air compression station, and then when the double-wheel stirring drilling machine enters the underground and is positioned in slurry, the compressed air output by the air compression station is adjusted through pressure feedback, and the pressure between the oil and the external slurry in the double-wheel stirring drilling machine is adjusted through the monitoring device.

The method for judging the working condition in the double-wheel stirring drill by the gas pressure maintaining system comprises the following steps

Step 1, arranging a moisture sensor in a milling head of a double-wheel stirring drilling machine, and connecting the moisture sensor, a monitoring device and an air compressor compressed air pressure numerical sensor with a host control computer;

step 2, feeding back various numerical values in a host control computer through a monitoring device and the sensors, and calculating through a controller algorithm to establish pressure balance inside and outside the milling head;

and 3, judging whether the oil in the head washing is leaked or invalid or not by the moisture content in the oil in the head washing in real time through the moisture sensor and combining the floater position fed back by the monitoring device and the numerical value of the compressed air.

This gas protects pressure system adopts above-mentioned structural design, through set up a monitoring devices in the cutter head outside, makes it be linked together with the inside fluid of cutter head simultaneously with the isolated with outside compressed air, like this alright realize controlling the inside and outside pressure balance's of cutter head purpose through monitoring devices in real time according to the demand. Meanwhile, the monitoring device is matched with a water sensor and other sensors in the milling head, so that whether the sealing structure of the milling head and the state of oil in the milling head are normal or not can be judged easily and quickly; meanwhile, the pressure balance between the inside and the outside of the milling head can be easily and quickly adjusted by adjusting the data of the compressed air.

Drawings

Fig. 1 is a schematic diagram of the arrangement state of the gas pressure maintaining system.

Fig. 2 is a schematic structural diagram of a walking floor with an air compression station and the air compression station.

Detailed Description

The invention is further illustrated by the following specific examples.

As shown in fig. 1 and 2, an air pressure maintaining system for a two-wheeled stirring drilling machine comprises one air compression station 1 and further comprises a monitoring device 3 arranged inside a milling head 2 of the two-wheeled stirring drilling machine, wherein the head of the monitoring device 3 is connected with the air compression station 1 through an air pipe, the tail of the monitoring device 3 is connected with the milling head of the two-wheeled stirring drilling machine 2, a floater 4 is arranged in the monitoring device 3, and the floater 4 divides the inside of the monitoring device 3 into an upper half part and a lower half part; thus, the air compression station 1 inputs compressed air to the upper half part of the monitoring device 3 through an air pipe, and because the lower half part of the monitoring device 3 is connected with the milling head 2 of the double-wheel stirring drilling machine, oil in the milling head 2 enters the lower half part of the monitoring device 3, and the compressed air of the upper half part is isolated from the oil of the lower half part through the floater 4 in the monitoring device 3; the pressure of oil in the lower half part of the monitoring device 3 and the milling head 2 of the double-wheel stirring drilling machine is indirectly adjusted by adjusting the numerical value of compressed air output by the air compression station 1, and then when the double-wheel stirring drilling machine enters the underground and is positioned in slurry, the compressed air output by the air compression station 1 is adjusted by pressure feedback, and the pressure between the oil and the external slurry in the double-wheel stirring drilling machine is adjusted by the monitoring device 3.

The method for judging the working condition in the double-wheel stirring drill by the gas pressure maintaining system comprises the following steps

Step 1, arranging a moisture sensor in a milling head 2 of a double-wheel stirring drilling machine, and connecting the moisture sensor, a monitoring device 3 and an air compressor compressed air pressure numerical sensor with a host control computer;

step 2, feeding back various numerical values in a host control computer through the monitoring device 3 and the sensors, and calculating through a controller algorithm to establish pressure balance inside and outside the milling head 2;

and 3, judging whether the oil in the head washing is leaked or invalid or not by the moisture content in the oil in the head washing in real time through the moisture sensor and combining the floater position fed back by the monitoring device 3 and the numerical value of the compressed air.

This gas protects pressure system adopts above-mentioned structural design, through set up a monitoring devices in the cutter head outside, makes it be linked together with the inside fluid of cutter head simultaneously with the isolated with outside compressed air, like this alright realize controlling the inside and outside pressure balance's of cutter head purpose through monitoring devices in real time according to the demand. Meanwhile, the monitoring device is matched with a water sensor and other sensors in the milling head, so that whether the sealing structure of the milling head and the state of oil in the milling head are normal or not can be judged easily and quickly; meanwhile, the pressure balance between the inside and the outside of the milling head can be easily and quickly adjusted by adjusting the data of the compressed air.

Claims (2)

1. The utility model provides a gas pressure maintaining system for double round stirring rig, its includes one air compression station, characterized by: the monitoring device is arranged in the milling head of the double-wheel stirring drilling machine, the head of the monitoring device is connected with the air compression station through an air pipe, the tail of the monitoring device is connected with the milling head of the double-wheel stirring drilling machine, and a floater is arranged in the monitoring device and divides the inside of the monitoring device into an upper half part and a lower half part; therefore, compressed air is input to the upper half part of the monitoring device through the air pipe in the air compression station, and the lower half part of the monitoring device is connected with the milling head of the double-wheel stirring drilling machine, so that oil in the milling head enters the lower half part of the monitoring device, and the compressed air in the upper half part is isolated from the oil in the lower half part through the floater in the monitoring device; the pressure of oil in the lower half part of the monitoring device and the milling head of the double-wheel stirring drilling machine is indirectly adjusted by adjusting the numerical value of compressed air output by the air compression station, and then when the double-wheel stirring drilling machine enters the underground and is positioned in slurry, the compressed air output by the air compression station is adjusted through pressure feedback, and the pressure between the oil and the external slurry in the double-wheel stirring drilling machine is adjusted through the monitoring device.

2. A method for determining the operating conditions in a twin wheel churning drill using the gas dwell system of claim 1, wherein: comprises that

Step 1, arranging a moisture sensor in a milling head of a double-wheel stirring drilling machine, and connecting the moisture sensor, a monitoring device and an air compressor compressed air pressure numerical sensor with a host control computer;

step 2, feeding back various numerical values in a host control computer through a monitoring device and the sensors, and calculating through a controller algorithm to establish pressure balance inside and outside the milling head;

and 3, judging whether the oil in the head washing is leaked or invalid or not by the moisture content in the oil in the head washing in real time through the moisture sensor and combining the floater position fed back by the monitoring device and the numerical value of the compressed air.

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