Orifice automatic blowout prevention early warning device for directional drilling

Abstract

The utility model discloses a directional drilling orifice automatic blowout prevention early warning device which comprises a floral tube, a blowout prevention air bag, a coal piling sensor and an alarm device, one end of the floral tube is used for being fixedly connected with a directional drilling orifice, the periphery of the floral tube is completely wrapped by the blowout prevention air bag, the coal piling sensor is arranged near the blowout prevention air bag, and the alarm device is arranged on the floral tube. The alarm device is connected with the coal piling sensor through a cable; when gas is sprayed out of the orifice, the gas blows the blowout prevention air bag through the floral tube so as to trigger the coal piling sensor, and the coal piling sensor transmits a signal to the alarm device to give an alarm. In addition, the electromagnetic valve is additionally arranged, so that the electromagnetic valve is automatically opened when gas ejection is sensed, and gas overrun accidents can be effectively prevented through high negative pressure extraction of the gas in the hole.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas extraction construction technical field, concretely relates to a directional drilling hole orifice automatic blowout prevention early warning device. BACKGROUND

[0002] At present, the underground gas extraction operation mainly uses directional drilling machine construction, and the coal mine underground directional drilling field hole orifice blowout prevention early warning is mainly completed through ear listening, positive pressure whistle sounding and observation of blowout gas bag change. In the actual work process, due to the large machine noise and insufficient light in the construction site environment, the surrounding environment interference is caused in the drilling construction process, the operation personnel cannot pay attention to the whistle alarm and gas bag change, and then a gas overrun accident is caused. In addition, the operation personnel need a certain reaction process from the discovery of the early warning device alarm to the treatment of gas, and the measures cannot be taken in the first time, so that the best treatment opportunity of the gas blowout hole is missed. UTILITY MODEL CONTENTS

[0003] The utility model discloses a directional drilling hole orifice automatic blowout prevention early warning device can alarm rapidly when gas is sprayed, and the gas in the hole is lowered in the shortest time through high negative pressure.

[0004] The utility model technical scheme is described in detail as follows:

[0005] A directional drilling hole orifice automatic blowout prevention early warning device, including flower pipe, blowout prevention gas bag, coal pile sensor and alarm device, the flower pipe one end is used for with directional drilling hole orifice fixed connection, the blowout prevention gas bag completely covers the outer periphery of the flower pipe, and the coal pile sensor is arranged near the blowout prevention gas bag, and the alarm device is connected with the coal pile sensor through the cable;When the hole orifice has gas spray, the gas blows the blowout prevention gas bag through the flower pipe and then triggers the coal pile sensor, and the coal pile sensor transmits the signal to the alarm device and alarms.

[0006] Optionally or preferably, the above-mentioned automatic blowout prevention early warning device further comprises an electromagnetic valve, the electromagnetic valve is connected with the coal pile sensor, and the electromagnetic valve is further provided with two interfaces, one of which is used for connecting the air supply pipe of the coal mine underground directional drilling field, and the other is used for connecting the back suction pipe of the water drainer of the coal mine underground directional drilling field.

[0007] Optionally or preferably, the connection line between the electromagnetic valve and the coal pile sensor is further provided with a belt protection device host, and the belt protection device host is connected with the alarm device through the cable.

[0008] Optionally or preferably, the alarm device comprises an alarm lamp.

[0009] Optionally or preferably, the coal pile sensor comprises a control rod, and the gas pushes and pushes the control rod after blowing the blowout prevention gas bag through the flower pipe and then triggers the coal pile sensor.

[0010] Optionally or preferably, the flower pipe is made of a steel pipe with an inner diameter of 4 inches, and a plurality of through holes with an inner diameter of 12 mm are formed on the pipe wall.

[0011] Optionally or preferably, the blowout prevention air bag is made of a wind tube cloth, and the maximum diameter after blowing is 800 mm.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The directional drilling hole orifice automatic blowout prevention early warning device of the utility model, the gas is blown into the blowout prevention air bag through the flower pipe to trigger the coal pile sensor, the coal pile sensor transmits the signal to the alarm device to alarm, the alarm device includes an alarm lamp and a bell, and sound and light can be combined to improve the alarm effect, the on-site operator can discover the gas anomaly in the first time, further measures can be taken in time, and the gas overrun accident can be effectively prevented.

[0014] The electromagnetic valve is connected with the coal pile sensor, the air supply pipe and the back pipe of the water drainer, so that when the coal pile sensor is triggered, the electromagnetic valve is automatically opened, the air pressure of the air supply pipe is transmitted to the back pipe of the water drainer through the electromagnetic valve, the pneumatic valve is installed in the back pipe, the pneumatic valve is automatically opened under the air pressure, the gas in the hole is drawn away in the shortest time through high negative pressure, and the pressure is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic view of the connection structure of the directional drilling hole orifice automatic blowout prevention early warning device of the embodiment 1.

[0016] In the drawing:

[0017] 1-blowout prevention air bag, 2-coal pile sensor, 21-control rod, 3-alarm device, 4-electromagnetic valve, 5-belt protection device host, 6-air supply pipe, 7-double layer water drainer, 71-back pipe, 72-main pipe, 8-main pipe line, 9-four-way. DETAILED DESCRIPTION

[0018] The technical scheme of the utility model will be explained and described clearly and completely in combination with the drawings and the preferred embodiments, so that the person skilled in the art can better understand the utility model and implement it. Obviously, the described embodiments are only a part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the application.

[0019] Embodiment 1

[0020] As Figure 1As shown, a directional drilling orifice automatic blowout prevention early warning device includes a flower pipe, a blowout prevention air bag 1, a coal pile sensor 2 and an alarm device 3, in addition to an electromagnetic valve 4 and a coal mine underground directional drilling field original air supply pipe 6 and double layer water drainer 7 to form an automatic blowout prevention early warning system.

[0021] Specifically, the flower pipe is made of a steel pipe with an inner diameter of 4 inches, and a plurality of through holes with an inner diameter of 12 mm are formed on the pipe wall. The directional drilling orifice is sequentially connected with two four-way pipes, one of which is connected with an upper suction pipe and a lower suction pipe respectively, and the other of which is connected with a 4-inch armored pipe and a lower drainage pipe. One end of the flower pipe is connected to the 4-inch armored pipe, and the other end is connected to the rear suction pipe 71 of the double layer water drainer 7, and the orifice of the suction pipe 71 is also 4 inches.

[0022] The blowout prevention air bag 1 is made of a wind tube cloth (with fireproof performance) and completely wraps around the outer periphery of the flower pipe. After being inflated, the maximum diameter is 800 mm.

[0023] The coal pile sensor 2 is arranged near the blowout prevention air bag and includes a control rod 21 which can be pushed by the blowout prevention air bag 1 after inflation.

[0024] The alarm device 3 includes an alarm light and a bell, and the alarm device 3 is connected with the coal pile sensor 2 through a cable. The alarm device 3 can also be connected to the belt protection device host 5 (used for centralized control of multiple belt operations in coal mine underground operation, which is prior art), and the belt protection device host 5 is connected with the coal pile sensor 2.

[0025] The coal mine underground directional drilling field is generally provided with an air supply pipe which is in a constant open state. In addition, a water drainer is also provided, and the embodiment sets a double layer water drainer 7 which is connected with a main suction pipe 72 and a rear suction pipe 71, and the main suction pipe 72 is further connected with a 350 main suction drainage pipe. The double layer water drainer 7 is used for treating water accumulation in the drainage system pipe during gas drainage treatment.

[0026] The electromagnetic valve 4 can be directly connected with the coal pile sensor 2, or can be connected through the belt protection device host 5. The other two interfaces of the electromagnetic valve 4 are connected with the air supply pipe 6 and the rear suction pipe 71 respectively.

[0027] When the orifice gas appears to be jetted, the gas enters the flower pipe, fills the blowout preventer air bag 1 through the through hole of the flower pipe wall, puffs and pushes the control rod 21, and then triggers the coal pile sensor 2. When the blowout preventer air bag 1 is puffed, the coal pile sensor 2 is triggered, the alarm device 3 connected with the coal pile sensor 2 is triggered, the alarm light is turned on, and if the alarm device 3 has a bell, the bell also rings at the same time. In addition, the electromagnetic valve 4 is triggered by the signal of the coal pile sensor 2, and the protection function is also started. Specifically, the electromagnetic valve 4 is automatically opened to connect the back suction pipe 71 and the air supply pipe 6, the wind pressure is transmitted to the back suction pipe 71 of the double-layer water drain 7 through the electromagnetic valve 4, the back suction pneumatic valve is installed in the back suction pipe 71, the back suction pneumatic valve is automatically opened under the action of the wind pressure, and then the gas at the drilling hole is sucked away in the shortest time through high negative pressure to reduce the pressure.

[0028] The device cooperates with the blowout preventer air bag 1, the coal pile sensor 2, the alarm device 3 and the electromagnetic valve 4, so that when the gas is sensed to be jetted, the electromagnetic valve 4 is automatically opened to suck the gas in the hole through high negative pressure. At the same time, the alarm light is turned on to ensure that the on-site operator can discover the gas anomaly in the first time, take further measures in time, and effectively prevent the gas overrun accident.

[0029] In this paper, specific examples are applied to elaborate the inventive concept in detail. The above embodiment is only used to help understand the core idea of the utility model. It should be pointed out that any obvious modification, equivalent replacement or other improvement made by the ordinary skilled in the art without departing from the inventive concept should be included in the protection scope of the utility model.

Claims

1. An automatic blowout prevention and early warning device for directional drilling wellheads, characterized in that, The system includes a perforated pipe, an anti-gas bladder, a coal pile sensor, and an alarm device. One end of the perforated pipe is fixedly connected to the opening of the directional borehole. The anti-gas bladder completely covers the outer circumference of the perforated pipe. The coal pile sensor is located near the anti-gas bladder. The alarm device is connected to the coal pile sensor via a cable. When gas is ejected from the borehole, the gas blows through the perforated pipe, inflating the anti-gas bladder and triggering the coal pile sensor. The coal pile sensor then transmits a signal to the alarm device to sound an alarm.

2. The automatic anti-spraying early warning device according to claim 1, characterized in that, It also includes a solenoid valve, which is connected to a coal pile sensor. The solenoid valve is also provided with two interfaces, one of which is used to connect to the air supply pipe of the underground directional drilling site in the coal mine, and the other of which is used to connect to the back drain pipe of the water discharge device of the underground directional drilling site in the coal mine.

3. The automatic anti-spraying early warning device according to claim 2, characterized in that, The connection line between the solenoid valve and the coal pile sensor is also equipped with a belt protection device host, which is connected to the alarm device via a cable.

4. The automatic anti-spraying early warning device according to claim 3, characterized in that, The alarm device includes an alarm light and an alarm bell.

5. The automatic anti-spraying early warning device according to claim 2, characterized in that, The coal pile sensor includes a control rod. Gas blows the anti-gas bag through the perforated pipe and pushes the control rod, thereby triggering the coal pile sensor.

6. The automatic anti-spraying early warning device according to claim 1, characterized in that, The flower tube is made of steel pipe with an inner diameter of 4 inches, and multiple through holes with an inner diameter of 12 mm are opened on the pipe wall.

7. The automatic anti-spraying early warning device according to claim 1, characterized in that, The airbag is made of windproof cloth and has a maximum diameter of 800mm when inflated.

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