CN202674114U

CN202674114U - Automatic brake hydraulic loop in case of failure of hydraulic disc type brake device

Info

Publication number: CN202674114U
Application number: CN 201220264749
Authority: CN
Inventors: 杨艳; 祝贺; 柳锁贤; 徐斌荣; 廖丽华
Original assignee: Baoji Oilfield Machinery Co Ltd
Current assignee: Baoji Oilfield Machinery Co Ltd
Priority date: 2012-06-06
Filing date: 2012-06-06
Publication date: 2013-01-16
Anticipated expiration: 2022-06-06

Abstract

The utility model discloses an automatic brake hydraulic loop in case of failure of a hydraulic disc type brake device. A brake disc is simultaneously provided with a pair of working calipers and a pair of normally closed calipers; the working calipers are communicated with an output end of a shuttle valve; the normally closed calipers are communicated with an output end of a normally closed brake valve; two input ends of the shuttle valve are communicated with a 3# output end of a manual servo brake valve and an output end of an emergency brake valve respectively; one input end of the manual servo brake valve is simultaneously communicated with a motor hydraulic pump assembly, a pressure sensor and a 1# output end of the emergency brake valve; another input end of the manual servo brake valve is simultaneously communicated with the normally closed brake valve and an input end of the emergency brake valve; and the normally closed brake valve is also communicated with a 2# output port of the emergency brake valve. According to the device provided by the utility model, automatic brake of the brake device under the conditions of power failure, motor failure, hydraulic pump failure, hydraulic pipeline or joint damage, damage of a coupling of a motor and a pump and the like is realized, and major accidents such as drill tool falling are avoided.

Description

Self-actuating brake oil hydraulic circuit during the hydraulic disc type brake device fault

Technical field

The utility model belongs to mechanical equipment technical field, self-actuating brake oil hydraulic circuit when relating to a kind of hydraulic disc type brake device fault.

Background technique

The dish brake apparatus of rig all adopts and often opens and normally closed Hydraulic Double braking mechanism at present, and oil hydraulic circuit is with Chang Kai and the separately separately setting of normally closed double-brake mechanism mostly, when running into outage, electrical fault, Hydraulic pump fault, hydraulic line or joint damage, during the situations such as the coupling damage of motor and pump, the hydraulic system of hydraulic disc brake progressively loses pressure, the function of its work brake (often opening) is progressively lost, because the scene needs operator show great attention to wellhead equipment, personnel's working condition, and the noise of rig is very large, operator are difficult to find this fault, safety shut-down (normally closed) does not participate in brake, and this major accident that just causes easily drilling tool to drop occurs.

Summary of the invention

Self-actuating brake oil hydraulic circuit when the purpose of this utility model provides a kind of hydraulic disc type brake device fault has solved and exists safety shut-down unreliable in the prior art, the problem that causes easily drilling tool to drop.

The technological scheme that the utility model adopts is, self-actuating brake oil hydraulic circuit during a kind of hydraulic disc type brake device fault, working clamp and normally closed pincers are installed on brake disc simultaneously, the output terminal UNICOM of the control port of working clamp and shuttle valve, the output terminal UNICOM of the control port of normally closed pincers and normally closed brake valve; Two input ends of shuttle valve respectively with the output terminal of manual servobrake valve, the 3# output terminal UNICOM of emergency stop valve;

The manual 1# output terminal while UNICOM of input end of servobrake valve and electrical machinery hydraulic pump assembly, pressure transducer and emergency stop valve, manually another input end of servobrake valve simultaneously and the output terminal of normally closed brake valve, input end UNICOM of emergency stop valve, the control port of normally closed brake valve also with the 2# output port UNICOM of emergency stop valve.

The beneficial effects of the utility model are, realized that the situations such as coupling damage of outage, electrical fault, Hydraulic pump fault, hydraulic line or joint damage, motor and pump appear in hydraulic disc type brake device, the hydraulic system of hydraulic disc brake progressively loses under the pressure condition, the braking device self-actuating brake, the major accident of having avoided drilling tool to drop occurs, be adapted to have the water brake mechanism of Chang Kai and normally closed double-brake mechanism, be adapted to especially the hydraulic disc type brake device of the oil-well rig of all kinds of and various models.

Description of drawings

Fig. 1 is the structural representation of the utility model device.

Among the figure, 1. electrical machinery hydraulic pump assembly, 2. manually servobrake valve, 3. shuttle valve, 4. working clamp, 5. pressure gauge, 6. normally closed pincers, 7. normally closed brake valve, 8. emergency stop valve, 9. pressure transducer, 10. pipeline assembly, 11. brake discs, K1, K2, K3 are respectively the Three pressures table.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is elaborated.

With reference to Fig. 1, the structure of the utility model oil hydraulic circuit is working clamp 4 and normally closed pincers 6 to be installed simultaneously, the output terminal UNICOM of the control port of working clamp 4 and shuttle valve 3, the output terminal UNICOM of the control port of normally closed pincers 6 and normally closed brake valve 7 on brake disc 11; Two input ends of shuttle valve 3 respectively with the output terminal of manual servobrake valve 2, the 3# output terminal UNICOM of emergency stop valve 8;

The manual 1# output terminal while UNICOM of input end of servobrake valve 2 and electrical machinery hydraulic pump assembly 1, pressure transducer 9 and emergency stop valve 8, manually another input end of servobrake valve 2 simultaneously and the output terminal of normally closed brake valve 7, input end UNICOM of emergency stop valve 8, the control port of normally closed brake valve 7 also with the 2# output port UNICOM of emergency stop valve 8.Hydraulic pipe line between the above-mentioned all parts is generically and collectively referred to as pipeline assembly 10.

The input end of normally closed pincers 6 is equipped with pressure gauge K1, and the input end of working clamp 4 is equipped with pressure gauge K2, and manually an input end of servobrake valve 2 is equipped with pressure gauge K3.

Three pressures table 5(comprises respectively K1, K2, K3) for the hydraulic working pressure that shows the institute installation position.

The function of pressure transducer 9 provides telecontrol and warning, realizes the manual servobrake valve 2 of control and emergency stop valve 8 actions.

The function of emergency stop valve 8 and shuttle valve 3 is to press valve button (or source of the gas comes gas) can realize that then working clamp 4 and normally closed pincers 6 brake simultaneously.

The working principle of the utility model oil hydraulic circuit is: when work, the electric motor starting of electrical machinery hydraulic pump assembly 1, hydraulic pump works provides hydraulic pressure, hydraulic pressure is by pipeline assembly 10, manual servobrake valve 2 and normally closed brake valve 7 fuel feeding, manually servobrake valve 2 is realized brake by control working clamp 4, the size of the brake weight during working clamp 4 brake be directly proportional with the pressure size of hydraulic system (piston area of oil hydraulic cylinder multiply by system pressure and equals active force).Operate simultaneously oil-filled the boosting of oil hydraulic cylinder that normally closed brake valve 7 makes normally closed pincers 6, the butterfly spring in the oil hydraulic cylinder is opened braking clamp, discharges the winch brake dish.When transferring drilling tool, the speed whether the winch brake dish rotates and rotate is decided by the aperture size of the manual servobrake valve 2 of operator's grasp.And when the situations such as coupling damage that outage, electrical fault, Hydraulic pump fault, hydraulic line or joint damage, motor and pump occur, when the hydraulic system of hydraulic disc brake progressively loses pressure condition, decline along with the hydraulic system stepwise pressure, the oil hydraulic cylinder oil pressure of normally closed pincers 6 descends thereupon, butterfly spring decrement in the cylinder reduces, the piston rod of oil hydraulic cylinder stretches out, brake block is adjacent to brake disc, the brake weight of braking clamp progressively rises thereupon, until the dead winch brake dish of stopping (the rich amount of its brake is very abundant).This major accident that just can avoid drilling tool to drop fully occurs.

Oil hydraulic circuit of the present utility model comprises following advantage:

1) after the device powers down, the electrical machinery hydraulic pump assembly quits work, and continues the work of operation braking device, but this loop assurance device self-actuating brake after hydraulic system pressure reduces.2) electrical fault makes motor stalling cause air pump inoperative such as motor circuit line short, phase shortage, damage of bearings etc., continues the work of operation braking device, but this loop assurance device self-actuating brake after hydraulic system pressure reduces.3) Hydraulic pump fault, wear and tear, leak, burn to death etc. such as pump and make oil hydraulic pump not provide the pressure of hydraulic oil or specified data, the hydraulic oil of flow to system, then continue the work of operation braking device, but this loop assurance device self-actuating brake after hydraulic system pressure reduces.4) hydraulic line or joint damage, such as the hydraulic line explosion, crack, fracture and joint damage and cause hydraulic oil and efflux, and hydraulic system pressure is reduced, but this loop assurance device self-actuating brake.5) damage of the coupling of motor and pump causes oil hydraulic pump and quits work the work of continuation operation braking device, but this loop assurance device self-actuating brake after hydraulic system pressure reduces.

Claims

1. self-actuating brake oil hydraulic circuit during a hydraulic disc type brake device fault, it is characterized in that: working clamp (4) and normally closed pincers (6) are installed on brake disc (11) simultaneously, the output terminal UNICOM of the control port of working clamp (4) and shuttle valve (3), the output terminal UNICOM of the control port of normally closed pincers (6) and normally closed brake valve (7); Two input ends of shuttle valve (3) respectively with the output terminal of manual servobrake valve (2), the 3# output terminal UNICOM of emergency stop valve (8);

The manual 1# output terminal while UNICOM of input end of servobrake valve (2) and electrical machinery hydraulic pump assembly (1), pressure transducer (9) and emergency stop valve (8), manually another input end of servobrake valve (2) simultaneously and the output terminal of normally closed brake valve (7), input end UNICOM of emergency stop valve (8), the control port of normally closed brake valve (7) also with the 2# output port UNICOM of emergency stop valve (8).

2. self-actuating brake oil hydraulic circuit during hydraulic disc type brake device fault according to claim 1, it is characterized in that: the input end of described normally closed pincers (6) is equipped with pressure gauge K1, the input end of working clamp (4) is equipped with pressure gauge K2, and manually an input end of servobrake valve (2) is equipped with pressure gauge K3.