CN219546581U - Gas-liquid disc brake device for workover rig - Google Patents

Abstract

The utility model relates to the field of oilfield workover equipment, in particular to a gas-liquid disc brake device for a workover rig. The device comprises a brake disc on a winch drum shaft, two sets of working pliers are additionally arranged, the working pliers are in functional connection with the brake disc, and the working pliers are provided with a brake gas-liquid control system; the brake gas-liquid control system comprises a one-way valve, an air reservoir, an air source treatment combination device and a gas circuit board which are connected in sequence; the working clamp loop is communicated and connected with the gas circuit board through a working clamp boosting cylinder, a shuttle valve and a proportional pressure regulating valve, one path of the shuttle valve enters the second shuttle valve and then enters the second normally-open gas control valve to control the clutch of the winch to be disconnected in an interlocking way, the normally-open gas control valve is connected between the shuttle valve and the safety clamp gas circuit, and one path of the second normally-open gas control valve is connected with the gas circuit board. The electric workover rig realizes instantaneous and accurate braking under the condition that two braking systems are not interfered with each other and are interlocked with each other, and the double working pliers continue to provide braking when power is off, so that the problems that the electric workover rig cannot seal a well when power failure or electric fault occurs in operation are solved.

Description

Gas-liquid disc brake device for workover rig

Technical Field

The utility model relates to the field of oilfield workover equipment, in particular to a gas-liquid disc brake device for a workover rig.

Background

In the prior art, in a conventional electric workover rig, a braking system consists of a motor, an electric control cabinet (electric control system), a brake disc and a safety tongs, and the closing and opening of the safety tongs are controlled by the electric control system through the current and the voltage of the motor. When the control button valve is pressed, the safety tongs lock the brake disc to realize the parking brake. The operation is simple, but the power consumption is high. And because factors such as different loads, different speeds, a certain time required by the frequency converter to reduce the frequency can lead to long braking time of an original braking system, long braking distance, incapability of realizing instantaneous and accurate braking, driller can not well grasp the braking distance and the braking time in the braking mode, so that certain risks can be brought to personnel and equipment at a wellhead when a hook falls down, and working braking can not be continuously provided when power is off.

Disclosure of Invention

The utility model aims to solve the problems and increase the gas-liquid disc brake, thereby shortening the brake time and accurately stopping the gas-liquid disc brake device for the workover rig.

The technical scheme of the utility model is as follows: the gas-liquid disc brake device for the workover rig comprises a brake disc on a winch drum shaft and is characterized in that two sets of working clamps are added, the working clamps are in functional connection with the brake disc, and the working clamps are provided with a brake gas-liquid control system; the brake gas-liquid control system comprises a one-way valve, an air reservoir, an air source treatment combination device and a gas circuit board which are connected in sequence; the working clamp loop is communicated and connected with the gas circuit board through a working clamp boosting cylinder, a shuttle valve and a proportional pressure regulating valve, one path of the shuttle valve enters the second shuttle valve and then enters the second normally-open gas control valve to control the clutch of the winch to be disconnected in an interlocking way, the normally-open gas control valve is connected between the shuttle valve and the safety clamp gas circuit, and one path of the second normally-open gas control valve is connected with the gas circuit board.

The electric workover rig has the advantages that the braking system of the electric workover rig is improved, the gas-liquid disc brake is added on the basis of the original electric brake and the electric control safety tongs, the electric and mechanical double-braking system is realized on the electric workover rig with low cost of the gas-liquid disc brake, the safety tongs are reserved, the two working tongs can be used for normal and power-off operation, and the power-off and gas-off emergency braking can be realized. When the motor fails and the emergency occurs, the air source provided by the electric air compressor controls the air-liquid disc brake device to carry out emergency braking.

The utility model has the advantages that: 1. under the condition that two braking systems are not interfered with each other and are interlocked with each other, the purposes that the electric braking of a motor can be used for completing the retarded braking in the process of carrying out gentle lifting of a load, and the pneumatic-hydraulic disc brake can be used for carrying out short-time emergency braking on the premise that the motor and a frequency converter are not overloaded are achieved, the instant and accurate braking is realized, the double-working pliers continue to provide braking when power is off, the chassis engine power can be used for carrying out ending work, and the problems that an electric workover rig cannot seal a well when power failure or electric failure is encountered in operation are perfectly solved.

2. The working clamp uses an air source provided by the electric air compressor to realize emergency braking. When no braking action is performed, the electric air compressor does not need to work, compared with an electric hydraulic station of a hydraulic disc brake, the electric hydraulic station greatly reduces the power consumption of the system, the power consumption is only about 5% of that of the hydraulic disc brake, and the requirements of environmental protection and energy saving of the electric workover rig are met.

Embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model.

Fig. 2 is a schematic diagram of the arrangement structure of the gas-liquid disc brake working clamp and the safety clamp.

Detailed Description

Referring to fig. 1, the part names are as follows: the device comprises a one-way valve 1, an air storage cylinder 2, a ball valve 3, an air source treatment combination device 4, an air circuit board 5, a two-position three-way manual reversing valve 6, a ring passing valve 7, a normally closed electromagnetic valve 8, a button valve 9, a two-position three-way manual reversing valve 10, a third normally open air control valve 11, a safety tongs boosting cylinder 12, a working tongs boosting cylinder 13, a normally open air control valve 14, a quick discharge valve 15, a shuttle valve 16, a proportional pressure regulating valve 17, a second shuttle valve 18, a second normally open air control valve 19 and an air circuit 24.

Referring to fig. 2, the part names are as follows: winch drum shaft 20, brake disc 21, working pliers 22, safety tongs 23.

Referring to fig. 2, the gas-liquid disc brake device for workover rig comprises a brake disc 21 on a winch drum shaft 20. Two sets of working pliers 22 are added, and the working pliers 22 are in operative connection with the brake disc 21. The working clamp 22 is provided with a brake gas-liquid control system.

Referring to fig. 1, a gas-liquid disc brake device for a workover rig comprises a brake gas-liquid control system, a gas storage cylinder 2, a gas source treatment combination device 4 and a gas circuit board 5, wherein the gas-liquid control system comprises a one-way valve 1, the gas storage cylinder 2, the gas source treatment combination device 4 and the gas circuit board 5 which are sequentially connected, the one-way valve 1 is connected with a chassis engine, and a gas circuit 24 is connected with an air compressor. The pneumatic control loop of the working clamp 22 is communicated and connected with the air circuit board 5 through the working clamp boosting cylinder 13, the shuttle valve 16 and the proportional pressure regulating valve 17, one path of the shuttle valve 16 enters the second shuttle valve 18 and then enters the second normally-open pneumatic control valve 19 to control the winch clutch to be disconnected in a linkage manner, the normally-open pneumatic control valve 14 is connected between the shuttle valve 16 and the safety clamp air circuit, and one path of the second normally-open pneumatic control valve 19 is connected with the air circuit board 5.

Referring to fig. 1, the safety clamp circuit: the normal close electromagnetic valve 8, the button valve 9, the two-position three-way manual reversing valve 10, the third normal ventilation control valve 11 and the safety tongs reinforcement cylinder 12 which are connected in sequence are communicated and connected with the air circuit board 5.

The third normal-ventilation air control valve 11 is connected with the anti-collision ring valve 7 and the two-position three-way manual reversing valve 6 and then is connected with the air circuit board 5. When the drum winding rope touches the anti-collision ring valve, the loop is connected, and the safety tongs lock the brake disc at the moment, so that the anti-collision protection braking of the ring is realized.

The normally closed electromagnetic valve 8 is used for breaking the brake.

The push-button valve 9 is used for emergency braking.

The two-position three-way manual directional valve 10 is used for parking braking.

The third normally-open air control valve 11 is used for preventing the crown block from collision.

The safety gear booster cylinder 12 is used for pressure amplification.

The air source firstly passes through the normally closed electromagnetic valve 8, the normally closed electromagnetic valve 8 is electrified, the air source enters the button valve 9, one path of the air source enters the two-position three-way manual reversing valve 10 after the air source passes through the three-way joint after the air source exits from the button valve 9, and the other path of the air source enters the normally open air control valve 14. The first path enters a third normal ventilation control valve 11 after passing through a two-position three-way manual reversing valve 10, and enters a safety tongs boosting cylinder 12 after passing through the third normal ventilation control valve 11, and the safety tongs boosting cylinder 12 realizes pressure amplification so as to open normally closed safety tongs. When any one of the four valves (a normally closed electromagnetic valve 8, a button valve 9, a two-position three-way manual reversing valve 10 and a third normally open air control valve 11) in the circuit of the safety tongs is in an off state, the safety tongs close the brake. Safety tongs or brake safety tongs.

Referring to fig. 1 and 2, the working clamp loop: consists of a working clamp boosting cylinder 13, a normally-open air control valve 14, a shuttle valve 16 and a proportional pressure regulating valve 17. Working pliers or brake working pliers.

The proportional pressure regulating valve 17 is used to regulate the amount of air pressure in the pipeline.

The shuttle valve 16 is connected with the normally-open air control valve 14 and the proportional pressure regulating valve 17, and the working pliers can brake no matter which way is out of air.

The air source is connected in parallel with the normally-open air control valve 14 through the loop of the proportional pressure regulating valve 17, one air source enters the working clamp boosting cylinder 13 through the three-way joint, so that the working clamp is driven to brake after the air source pressure entering the working clamp boosting cylinder 13 is amplified, and the other air source enters the second shuttle valve 18 and then enters the second normally-open air control valve 19 to control the winch clutch to be disconnected in a linkage manner. The second shuttle valve 18 is connected between the ring passing valve 7 and the third normally-open air control valve 11 in one path, and controls the winch clutch to be disconnected.

If the normally closed electromagnetic valve 8 or the button valve 9 in the safety gear loop with higher priority is in the air-break state, the pressure of the loop of the normally-open air control valve 14 is larger than or equal to that of the loop of the proportional pressure regulating valve 17, and at the moment, the state of the brake gear is irrelevant to the proportional pressure regulating valve 17, and the working gear outputs the maximum braking moment.

When the normally closed electromagnetic valve 8 and the button valve 9 are in a conducting state, the braking moment of the working clamp is determined by the proportional pressure regulating valve 17.

Winch clutch control circuit: consisting of a second normally open pneumatic control valve 19.

When the four valve mechanisms related to braking, namely the over-circle valve 7, the normally closed electromagnetic valve 8, the button valve 9 and the proportional pressure regulating valve 17, are in a braking state, one path of control air source is output to the second normally open air control valve 19, so that the winch clutch is disconnected, the power is cut off, and the impact on the frequency converter caused by too fast rotation speed reduction in the hard connection state of the motor and the winch is avoided.

The application method and the working principle are as follows:

original state: the air pressure is 0, the safety brake caliper 1 (normally closed caliper) brakes by a spring, and the roller body 7 is fixed and does not rotate.

Working conditions: starting operation, opening a safety clamp, opening a working clamp, engaging a winch clutch, and performing normal operation.

Parking working condition: the two-position three-way manual reversing valve 10 is switched to the original position, the safety tongs 12 break air to lock the brake disc, the winch stops rotating, and the big hook hovers.

Emergency state: when the motor fails and the emergency occurs, the air source provided by the electric air compressor starts to be input into the air channel, and the working clamp and the safety clamp brake simultaneously through the automatic control of the electromagnetic valve 8, so that emergency braking is realized.

The above description is only of specific embodiments of the present utility model, and the various illustrations do not limit the essential content of the present utility model.

Claims (1)

1. The gas-liquid disc brake device for the workover rig comprises a brake disc (21) on a winch drum shaft (20), and is characterized in that two sets of working clamps (22) are added, the working clamps (22) are in functional connection with the brake disc (21), and the working clamps (22) are provided with a brake gas-liquid control system; the brake gas-liquid control system comprises a one-way valve (1), a gas storage cylinder (2), a gas source treatment combination device (4) and a gas circuit board (5) which are connected in sequence; the pneumatic control loop of the working clamp (22) is connected with the pneumatic circuit board (5) through the working clamp boosting cylinder (13), the shuttle valve (16) and the proportional pressure regulating valve (17), one path of the shuttle valve (16) enters the second shuttle valve (18) and then enters the second normally-open pneumatic control valve (19) to control the clutch of the winch to be disconnected, the normally-open pneumatic control valve (14) is connected between the shuttle valve (16) and the pneumatic circuit of the safety clamp, and the other path of the second normally-open pneumatic control valve (19) is connected with the pneumatic circuit board (5).