CN-224226556-U - Low-pressure brake protection system of direct-current drilling machine

Abstract

The utility model relates to the technical field of direct current drilling machines, in particular to a low-pressure brake protection system of a direct current drilling machine, which comprises a driller room air source, wherein the air outlet end of the driller room air source is connected with a gate valve, the air outlet end of the gate valve is connected with an air source triplet, and the air outlet end of the air source triplet is connected with a pressure regulating valve. The driller gas source is connected to the original anti-collision system through a series of control elements, and the driller gas source comprises a gate valve, a gas source triple piece, a pressure regulating valve, a pressure sensor and pneumatic and electric control valves. The gate valve and the triple piece are responsible for opening and closing and purifying the gas circuit, the pressure regulating valve can regulate the gas source pressure, the pressure sensor outputs a signal to control the pneumatic and electric control valves under the set pressure, the pneumatic control valve is automatically closed when the pressure is insufficient, mechanical protection is provided, the electric control valve receives the signal and then controls the gas circuit to be opened and closed, electric protection is realized, the action pressure of the control valves is adjustable, and if faults occur, the control valves can be manually operated to ensure emergency operation and production safety.

Inventors

• Jian Desen
• CHEN GAOPING
• WEN HONGYANG
• ZHANG MAOSHENG
• Xiao Fangqiang
• TANG HONGWEI
• YU JIAN
• YANG MING
• WU XU
• LI QIAN

Assignees

• 中石化石油工程技术服务股份有限公司
• 中石化西南石油工程有限公司
• 中石化西南石油工程有限公司湖南钻井分公司

Dates

Publication Date

20260512

Application Date

20250529

Claims (5)

1. 1. The low-pressure brake protection system of the direct-current drilling machine comprises a driller room air source (1) and is characterized in that an air outlet end of the driller Fang Qiyuan (1) is connected with a gate valve (3), an air outlet end of the gate valve (3) is connected with an air source triplet (4), an air outlet end of the air source triplet (4) is connected with a pressure regulating valve (5), an air outlet end of the pressure regulating valve (5) is connected with a pneumatic control valve (7), an air outlet end of the pneumatic control valve (7) is connected with an electric control valve (8), an air outlet end of the electric control valve (8) is connected with an original anti-collision system (9), the pressure regulating valve (5) is connected with the pneumatic control valve (7) through an air pipe, a pressure sensor (6) is arranged outside the air pipe between the pressure regulating valve (5) and the pneumatic control valve (7), and a detection end of the pressure sensor (6) is arranged inside the air pipe between the pressure regulating valve (5) and the pneumatic control valve (7).
2. 2. The low-pressure brake protection system of a direct current drilling machine according to claim 1, wherein the brand model of the pressure sensor (6) is Emerson 3051S, the brand model of the pneumatic control valve (7) is ASCO 551, and the brand model of the electric control valve (8) is Fisher ED.
3. 3. The low-pressure brake protection system of a direct current drilling machine according to claim 1, wherein the driller Fang Qiyuan (1) and the gate valve (3) are connected through an air pipe, a pressure gauge (2) is installed outside the air pipe between the driller Fang Qiyuan (1) and the gate valve (3), and a detection end of the pressure gauge (2) is arranged inside the air pipe between the driller Fang Qiyuan (1) and the gate valve (3).
4. 4. The low-pressure brake protection system of the direct current drilling machine according to claim 1, wherein the air source triple piece (4) comprises a filter assembly (401), a steam-water separation assembly (402) and a lubrication assembly (403), an air inlet end of the filter assembly (401) is connected with an air outlet end of the gate valve (3) through an air pipe, and an air inlet end of the steam-water separation assembly (402) is connected with the air outlet end of the filter assembly (401) through an air pipe.
5. 5. The low-pressure brake protection system of a direct current drilling machine according to claim 4, wherein an air inlet end of the lubrication assembly (403) is connected with an air outlet end of the steam-water separation assembly (402) through an air pipe, and an air outlet end of the lubrication assembly (403) is connected with an air inlet end of the pressure regulating valve (5) through an air pipe.

Description

Low-pressure brake protection system of direct-current drilling machine Technical Field The utility model relates to the technical field of direct current drilling machines, in particular to a low-pressure brake protection system of a direct current drilling machine. Background In petroleum drilling equipment, a winch is considered as the most important equipment in three parts of a drilling machine, and is mainly used for controlling the lifting and the like of a drilling tool, and a winch braking system is an important component for guaranteeing the safe operation of the winch of the drilling machine, particularly in deep well operation and severe working environments, so that the winch braking system plays a vital role, and has the characteristics of quick response, strong stability, high reliability and the like. Because the AC variable frequency drive technology is applied, the braking system of the AC drilling machine is realized by mainly relying on energy consumption braking at ordinary times, the hovering function can be realized through a winch motor, the braking of a mechanical disc brake mainly works in an intervention mode of scram and the like, and meanwhile, the protection function of the winch braking system is relatively perfect because of the high digitalization of the AC variable frequency system. The winch brake system mainly depends on mechanical disc brake and auxiliary brake system to work, and the brake protection function is gradually perfected after years of development, but compared with the AC driller, the DC driller has a gap, particularly the low-pressure brake protection function, basically stays only in the alarm prompt stage and has no further protection. Disclosure of utility model The utility model provides a low-pressure brake protection system of a direct-current drilling machine, which mainly aims to solve the technical problems of fundamentally avoiding personnel and equipment injury caused by the fact that a winch does not automatically brake due to low pressure of the direct-current drilling machine, and designing a set of simple and reliable low-pressure brake protection system is a key of normal operation of the winch system of the direct-current drilling machine. In order to achieve the aim, the low-pressure brake protection system of the direct-current drilling machine comprises a driller room air source, wherein the air outlet end of the driller room air source is connected with a gate valve, the air outlet end of the gate valve is connected with an air source triplet, the air outlet end of the air source triplet is connected with a pressure regulating valve, the air outlet end of the pressure regulating valve is connected with a pneumatic control valve, the air outlet end of the pneumatic control valve is connected with an electric control valve, the air outlet end of the electric control valve is connected with an original anti-collision system, the pressure regulating valve is connected with the pneumatic control valve through an air pipe, a pressure sensor is arranged outside the air pipe between the pressure regulating valve and the pneumatic control valve, and the detection end of the pressure sensor is arranged inside the air pipe between the pressure regulating valve and the pneumatic control valve. By adopting the technical scheme, the driller room air source is an air supply source of the protection system, the gate valve, the air source triple piece, the pressure regulating valve, the pressure sensor, the pneumatic control valve and the electric control valve are sequentially connected behind the driller room air source, the electric control valve is connected to the original anti-collision system, the gate valve and the air source triple piece realize the functions of opening and closing the air channel and purifying the air source, the pressure regulating valve realizes flexible regulation of air source pressure from the minimum pressure to the air supply pressure, the pressure sensor is connected to the air channel after pressure regulation, the pressure sensor outputs a dry node signal which is connected or closed under the set pressure value and is used for controlling the subsequent pneumatic control valve and the electric control valve, the valve is automatically closed when the input pressure is lower than the set value, no external force is needed, the mechanical pressure detection and the protection function is realized, the electric control valve is connected to the air outlet pipe of the pneumatic control valve, namely the two-position two-way electromagnetic valve is connected to the electric control valve, the electric control valve receives the opening and closing output signal from the pneumatic control valve, the opening and closing action of the air channel is realized, the air channel is controlled to be opened and closed, the pressure detection and the protection function is realized, the electric control valve is connected to the