introduce
1. Disc
brake has the following advantages:
◆ large braking torque capacity, stable braking performance and high reliability.
◆ multiple protection functions, safer use
◆ it can realize the automatic operation difficult to realize with the brake
◆ with break point automatic brake function, which can prevent accidents
◆ greatly improve the working environment and reduce the labor intensity of workers
◆ improve borehole quality, increase ROP and reduce
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drilling cost
2. Components of PS series disc brake
PS series disc brake consists of three parts: brake actuator, hydraulic station and operation platform, which are connected by hydraulic pipeline. The hydraulic station is the power source, which provides necessary hydraulic power for the actuator; the operation platform is composed of working brake, parking brake, emergency brake handle and oil pressure gauge; the actuator is composed of brake caliper, caliper frame and brake disc, which are used to stop the drum or adjust the lifting and lowering speed of drill string and send it into the drilling tool; the brake caliper is divided into normally open working caliper and normally closed safety caliper Two types.
PS series disc brake includes three series:
◆ conventional composite hydraulic disc brake: it is controlled by manual hydraulic
driller's valve and composed of normally open working tongs and normally closed safety tongs.
◆ electric control composite hydraulic disc brake: the driller adjusts the electronic driller's valve to implement operation control, which is a hydraulic disc brake composed of normally open working tongs and normally closed working tongs.
◆ normally closed hydraulic disc brake: controlled by the manual driller's valve, only the normally closed caliper is used as the hydraulic disc brake of the brake caliper.
3. PS disc brake function
◆ by operating the control handle of the brake valve, the working brake can adjust the positive pressure of the working caliper on the brake disc, so as to provide adjustable braking torque for the main engine and meet the requirements of different working conditions such as drilling delivery, tripping, etc.
◆ in case of emergency braking, press the emergency braking button, and all working tongs and safety tongs will participate in the braking to realize emergency braking.
◆ parking brake when the drilling rig is not working or the driller wants to leave the operation platform, pull down the parking brake handle and brake the safety caliper to prevent the hook from slipping.
◆ over coiling / anti-collision protection when the hook lifting weight rises to a certain position, and the over coiling valve or anti-collision valve will send a signal when it should work and brake, and the working tongs and safety tongs will all participate in the brake, implement the emergency brake, and avoid the accident of crown block collision.
◆ the hydraulic station with power-off safety protection function is equipped with four accumulators. When the disc brake hydraulic station is powered off, the disc brake working caliper can be braked normally 4-6 times to deal with emergency.
◆ disc brake device can provide audible and visual alarm functions such as low pressure, oil temperature, liquid level,
motor power failure, etc. according to the site conditions or user requirements
4. Application scope of PS disc brake series
PS series disc brake device can be used for various types of drilling rig, workover rig and wiper
◆ PS series brake can be installed on new drilling rig, or the existing old drilling rig can be modified.
◆ according to the user's needs, it can be equipped with automatic drilling or electronic driller's device to form a reliable, excellent technical performance and high stability drilling rig disc brake electronic driller's integrated system
Main technical parameters:
|
Model of brake caliper
|
Winch power (HP)
|
Applicable rig
|
maximum positive pressure(kn)
|
Number of safety gear(套)
|
Number of working tongs(套)
|
Rated system pressure(mpa)
|
|
Conventional control
|
electronic control
|
|
PSZ90
|
3000
|
ZJ90
|
90
|
4
|
6
|
9.5~10
|
9.5~10
|
|
PSZ75
|
2000
|
ZJ70
|
75
|
2/4
|
6/4
|
9.5
|
9.5
|
|
1500
|
ZJ50
|
2
|
4
|
8~9.5
|
8~9.5
|
|
PSZ65
|
1000
|
ZJ40
|
65
|
2
|
4
|
8
|
8
|
|
550~750
|
ZJ30
|
2
|
2
|
8
|
8
|
|
450~550
|
ZJ20
|
2
|
2
|
8
|
8
|
|
PSX50
|
150~450
|
修井机 通井机
|
50
|
2
|
2
|
8
|
8
|
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