阅读说明：本技术 游梁式抽油机电动刹车 (Electric brake of beam-pumping unit ) 是由 于海广 沙智国 赵海庆 于志伟 张合伟 张涛 孙国庆 吴波 毕新忠 杜国栋 马季 于 2020-05-25 设计创作，主要内容包括：本发明公开了一种游梁式抽油机电动刹车,包括刹车蹄、刹车蹄片、刹车摇臂、刹车中间座、横向拉杆、纵向拉杆,所述的横向拉杆与所述的横拉杆传动臂的中间位置通过铰链连接,所述的横拉杆传动臂的端部与中间杆的一端通过铰链连接,所述的中间杆的另一端通过固定装置与套装推杆的一端连接,所述的套装推杆另一端与电动推杆连接,所述的电动推杆另一端安装在抽油机的一侧。本发明与现有技术相比较,具有以下优点：设计合理、结构简单,在抽油机原有的手动刹车基础上,实现抽油机的电动刹车,并且电动刹车与手动刹车互不影响,电动刹车实现远距离控制,具有省力,动作可靠,速度快,且安全性高的特点。(The invention discloses an electric brake of a beam-pumping unit, which comprises a brake shoe, a brake shoe plate, a brake rocker arm, a brake middle seat, a transverse pull rod and a longitudinal pull rod, wherein the transverse pull rod is connected with the middle position of a transverse pull rod transmission arm through a hinge, the end part of the transverse pull rod transmission arm is connected with one end of the middle rod through a hinge, the other end of the middle rod is connected with one end of a sleeved push rod through a fixing device, the other end of the sleeved push rod is connected with an electric push rod, and the other end of the electric push rod is arranged on one side of the pumping unit. Compared with the prior art, the invention has the following advantages: reasonable in design, simple structure on the original manual brake basis of beam-pumping unit, realize the electric brake of beam-pumping unit to electric brake and manual brake do not influence each other, electric brake realizes remote control, has laborsaving, and the action is reliable, and is fast, and the high characteristics of security.)

1. Beam-pumping unit electric brake, including a pair of brake hoof (2), a pair of brake hoof (2) through the hub connection of brake hoof (2) one end, brake hoof (2) inboard be equipped with the brake shoe piece around, the brake shoe piece surround around brake wheel (3), the other end of a pair of brake hoof (2) be equipped with brake hoof and right circle (4), brake hoof set up in righting circle (4) and pull round pin (5), brake pull round pin (5) one end installation adjusting nut, brake pull round pin (5) other end axial be equipped with the recess, the recess both ends interlude rocking arm pin, the rocking arm pin in the middle of the recess on install brake rocking arm (7), brake in the middle of a pair of brake hoof (2) is pulled round pin (5) and is equipped with spring (6), brake rocking arm (7) other end installation vertical pull rod (8), vertical pull rod (8) other end connect vertical pull rod driving arm (10), vertical pull rod driving arm (10) and drag rod driving arm (11) coaxial arrangement on brake middle base (9), drag rod driving arm (11) connect horizontal pull rod (13), horizontal pull rod (13) be connected its characterized in that with manual brake lever (14): transverse pull rod (13) with the intermediate position of transverse pull rod drive arm (11) pass through hinged joint, the tip of transverse pull rod drive arm (11) pass through hinged joint with the one end of intermediate lever (12), the other end of intermediate lever (12) pass through fixing device and be connected with the one end of suit push rod (16), suit push rod (16) the other end be connected with electric putter (17), electric putter (17) the other end install the one side at the beam-pumping unit.

2. The electric brake of the beam-pumping unit according to claim 1, characterized in that: the suit push rod (16) include push rod (161), dog (162), interior pole (163), overcoat pole (164), push rod (161) one end be connected with fixing device, push rod (161) other end fixed mounting dog (162), dog (162) other end fixed mounting interior pole (163), interior pole (163) suit in overcoat pole (164), interior pole (163) make a round trip to slide in overcoat pole (164), dog (162) cross section area be greater than the area of overcoat pole (164) cross section, the inside length of overcoat pole (164) be greater than the length of interior pole (163).

3. The electric brake of the beam-pumping unit according to claim 1, characterized in that: the fixing device is a brake stroke adjusting nut (15), one end of the brake stroke adjusting nut (15) is connected with the middle rod (12) through threads, and the other end of the brake stroke adjusting nut is connected with the sleeved push rod (16) through threads.

4. The electric brake of the beam-pumping unit according to claim 1, characterized in that: electric putter (17) be connected with the relay electricity, the relay be connected with PLC controller (22) electricity, PLC controller (22) be connected with RTU controller (21) electricity, PLC controller (22) be connected with proximity switch (20) electricity, proximity switch (20) install on beam-pumping unit gearbox (1), with proximity switch (1) corresponding magnet (19) install on gearbox output shaft (18).

Technical Field

The invention relates to a matching device of petroleum development equipment, in particular to an electric brake of a beam-pumping unit.

Background

The beam-pumping unit, also called beam-pumping unit, beam-crank balance pumping unit, refers to the pumping unit which contains the beam, and through the link mechanism switching-over, the crank pouring weight is balanced, commonly called kowtow machine. The oil extraction mode is rod type oil extraction equipment (the oil extraction mode can be divided into two types, namely rod type oil extraction equipment and rodless type oil extraction equipment).

In the existing beam-pumping unit brake system, after a power supply is cut off on site according to production needs, a brake handle is pulled by manpower, and after 3 times of lever principle transmission, a brake arm is pressed down to enable a brake assembly to form cohesive force inwards, and a brake block on the brake assembly and a brake hoop on a reduction gearbox form friction to form braking.

Disclosure of Invention

The invention mainly solves two problems existing in the original brake, and firstly solves the problem that the remote well starting and stopping which is popularized in a large area after the oil field is quadruplicated and has no matched remote brake. The oil well can only stop at a free position because of no brake system. For special wells such as sand production, wax precipitation and heavy oil, the special wells cannot be stopped at specified positions according to the oil well management requirements, and the components of a circuit control system are damaged due to self-generation of a motor in the swinging process of a crank of the oil pumping unit. Secondly, when the on-site operation is carried out, the problem that the braking position is far away from the control cabinet, the single-person operation cannot be carried out, and the great potential safety hazard exists in the operation process is solved. The invention mainly combines a remote well starting and stopping signal to form a corresponding function pushing and withdrawing signal for the electric push rod, and combines a mechanical part of the invention to pull a brake arm of an original brake to form the brake.

The technical scheme is as follows: beam-pumping unit electric brake, including a pair of brake hoof, a pair of brake hoof pass through the hub connection of brake hoof one end, the brake hoof inboard around be equipped with the brake shoe piece, the brake shoe piece surround around the brake shoe, the other end of a pair of brake hoof be equipped with the brake hoof and right the circle, the brake hoof right the circle in set up the brake and pull the round pin, brake pull round pin one end mounting nut, brake pull round pin other end axial be equipped with the recess, the recess both ends alternate the rocker arm round pin, the middle rocker arm round pin of recess on install the brake rocking arm, the middle brake pull of a pair of brake hoof is equipped with the spring, the brake rocking arm other end installation vertical pull rod, vertical pull rod drive arm is connected to vertical pull rod, vertical pull rod drive arm and drag rod drive arm coaxial arrangement on the brake middle seat, drag rod drive arm connect horizontal pull rod, the horizontal pull rod be connected with manual brake lever, horizontal pull rod with the intermediate position of horizontal pull rod driving arm pass through hinged joint, the tip of horizontal pull rod driving arm pass through hinged joint with the one end of intermediate lever, the other end of intermediate lever pass through fixing device and be connected with the one end of suit push rod, the suit push rod other end be connected with electric putter, the electric putter other end install the one side at the beam-pumping unit.

Furthermore, the suit push rod include push rod, dog, interior pole, overcoat pole, push rod one end be connected with fixing device, the other end fixed mounting dog of push rod, the other end fixed mounting interior pole of dog, interior pole suit in the overcoat pole, interior pole make a round trip to slide in the overcoat pole, dog cross sectional area be greater than the area of overcoat pole cross section, the inside length of overcoat pole be greater than the length of inner rod.

Furthermore, the fixing device is a brake adjusting nut, one end of the brake adjusting nut is provided with an intermediate rod, and the other end of the brake adjusting nut is provided with a sleeved push rod.

Further, electric putter and relay electricity be connected, relay and PLC controller electricity be connected, PLC controller and RTU controller electricity be connected, PLC controller and proximity switch electricity be connected, proximity switch install on the beam-pumping unit gearbox, the magnet corresponding with proximity switch install on the gearbox output shaft.

Compared with the prior art, the invention has the following advantages: reasonable in design, simple structure on the original manual brake basis of beam-pumping unit, realize the electric brake of beam-pumping unit to electric brake and manual brake do not influence each other, electric brake realizes remote control, has laborsaving, and the action is reliable, and is fast, and the high characteristics of security.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention or in the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a view of the overall structure of the present invention;

FIG. 2 is a view of the nested pusher components of the present invention;

FIG. 3 is an electrical schematic of the present invention;

the automatic brake device comprises a pumping unit gearbox 1, a brake shoe 2, a brake wheel 3, a brake wheel 4, a brake shoe righting ring 5, a brake pull pin 6, a spring 7, a brake rocker arm 8, a longitudinal pull rod 9, a brake middle seat 10, a longitudinal pull rod transmission arm 11, a transverse pull rod transmission arm 12, a middle rod 13, a transverse pull rod 14, a brake rod 15, a brake stroke adjusting nut 16, a sleeved push rod 161, a push rod 162, a stop block 163, an inner rod 164, an outer sleeve rod 17, an electric push rod 18, a gearbox output shaft 19, a magnet 20, a proximity switch 21, an RTU controller 22 and a PLC controller.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

The mechanical part refers to fig. 1 and 2, the electric brake of the beam-pumping unit comprises a pair of brake shoes 2, the pair of brake shoes 2 are connected through a shaft at one end of each brake shoe 2, brake shoe sheets are arranged on the inner sides of the brake shoes 2 and surround the brake wheel 3, a brake shoe righting ring 4 is arranged at the other end of each brake shoe 2, a brake pull pin 5 is arranged in the brake shoe righting ring 4, an adjusting nut is arranged at one end of each brake pull pin 5, a groove is axially arranged at the other end of each brake pull pin 5, rocker pins are inserted at two ends of the groove, a brake rocker arm 7 is arranged on each rocker pin in the middle of the groove, a spring 6 is arranged on each brake pull pin 5 in the middle of each brake shoe 2, a longitudinal pull rod 8 is arranged at the other end of each brake rocker arm 7, the other end of each longitudinal pull rod 8 is connected with a longitudinal pull rod transmission arm 10, longitudinal rod transmission arm 10 and drag link transmission arm 11 coaxial arrangement on brake middle base 9, drag link transmission arm 11 connect transverse pull rod 13, transverse pull rod 13 be connected its characterized in that with manual brake lever 14: transverse pull rod 13 with the intermediate position of tie rod transmission arm 11 pass through hinged joint, the tip of tie rod transmission arm 11 pass through hinged joint with the one end of intermediate lever 12, the other end of intermediate lever 12 pass through fixing device and be connected with the one end of suit push rod 16, the suit push rod 16 other end be connected with electric putter 17, electric putter 17 other end install the one side at the beam-pumping unit.

The sleeved push rod 16 comprises a push rod 161, a stop block 162, an inner rod 163 and an outer sleeve rod 164, one end of the push rod 161 is connected with a fixing device, the stop block 162 is fixedly installed at the other end of the push rod 161, the inner rod 163 is fixedly installed at the other end of the stop block 162, the inner rod 163 is sleeved in the outer sleeve rod 164, the inner rod 163 slides back and forth in the outer sleeve rod 164, the cross section area of the stop block 162 is larger than that of the outer sleeve rod 164, and the length of the inner part of the outer sleeve rod 164 is larger than that of the inner rod 163

The fixing device is a brake stroke adjusting nut 15, one end of the brake stroke adjusting nut 15 is connected with the middle rod 12 through threads, and the other end of the brake stroke adjusting nut 15 is sleeved with a push rod 16 through threads.

The electric push rod 17 is electrically connected with a relay, the relay is electrically connected with a PLC (programmable logic controller) 22, the PLC 22 is electrically connected with an RTU (remote terminal unit) controller 21, the PLC 22 is electrically connected with a proximity switch 20, the proximity switch 20 is installed on a transmission case 1 of the oil pumping unit, and a magnet 19 corresponding to the proximity switch 1 is installed on an output shaft 18 of the transmission case.

The mechanical part is mainly characterized in that a transverse pull rod transmission arm of an original brake system is connected with the middle rod 12 through a hinge after a lever force arm is increased through lengthening, a sleeving push rod 16 is arranged at the lower part, the sleeving push rod 16 is connected with an electric push rod 17, and the electric push rod 17 is fixed on one side of the oil pumping unit.

When the well is stopped, the electric push rod 17 pushes up the sleeved push rod 16 after receiving a signal, and pushes the original brake transverse pull rod 13 forwards through the lever principle, so that the original brake system is driven to form a brake. When the well is opened, the electric push rod 17 receives a signal to withdraw, and the mechanical part moves reversely to release the brake.

When the original brake is used, the outer sleeve rod and the inner rod of the sleeved push rod 16 form relative displacement, so that the use of the existing brake is not influenced.

Referring to fig. 3, the system completes the switching between the local start-stop brake and the remote start-stop brake through the relay, the PLC controller 22 and the change-over switch, and has the following characteristics:

under the local state, the relay of the system does not participate in circuit control, the circuit of the original control cabinet has no influence, the function of the control cabinet has no influence, and the change-over switch is manually controlled and is completely isolated from the circuit of the control cabinet.

In a remote state, the PLC 22 performs start-stop operation according to given logic by intercepting start-stop signals, and parameters such as free swing stop time after brake release, brake current output time and the like can be adjusted at any time according to different well conditions.

The adaptability is wide, the control cabinet line changes fewly, only has replaced the long-range contact of opening and shutting in the original circuit, and the wiring is simple, as long as support the standard four-change cabinet of four-change long-range opening and shutting, good-old cabinet and transformation cabinet all mountable.

The well stopping brake can be positioned under different well conditions by adjusting the position of the magnet, a safety protection program is arranged in the well stopping brake, and the well stopping brake can be realized under the condition that the proximity switch has no signal.

Description of the principles

The start and stop in the local state are completed by the start and stop buttons of the control cabinet. The start-up procedure in the remote state is actually performed by two relay contacts K7, K07 and K8, K08 of the RTU controller 21, which may be referred to as start-stop contacts, which function similarly to start and stop buttons. After receiving a start-stop command transmitted by the upper computer, the RTU ignores the command if the RTU is in a local state, and executes a corresponding relay suction action if the RTU is in a remote state. From this, the logic can be derived: k7 and K07 are conducted and are necessarily connected with a remote starting signal; the K8 and K08 are connected with a remote well stopping signal. Through replacing the wiring, the two groups of contact functions are changed into starting and well stopping signal input, corresponding brake tightness operation is carried out through the PLC, and meanwhile, the original starting and stopping contacts are replaced by the two groups of contact functions in the PLC, so that the remote starting and stopping brake function is realized.

Introduction and wiring description of system components:

the remote braking system consists of a main relay (24V), a PLC (programmable logic controller) 22 and a change-over switch.

Main relay

The main relay in the system is used for starting and closing the whole system according to the state of the local remote switch, 4 groups of normally open and normally closed contacts are used, for convenience of description, the normally open and normally closed contacts are collectively called as 1, 2, 3 and 4-way contacts, the starting power supply is a rtu DI6 contact (+) and a GND (-) contact, and the two contacts are directly connected with the local remote switch and are convenient for wiring.

In a local state, the main relay is not started, and the original control cabinet circuit is not changed; a 24V braking system power input line enters the change-over switch through the 2 nd path normally closed contact and the 3 rd path normally closed contact to realize local braking control;

in a remote state, the main relay is started, the state of the 4 paths of contacts is changed, the normally open state is changed into the normally closed state, and the normally closed state is changed into the normally open state.

The PLC 22 power cord is connected with the power supply through the 1 st normally open contact, and the system is started.

The 24V brake system power input line enters the PLC controller 22 through the 2 nd (+) and 3 rd (-) normally open contacts.

PLC controller

The four contacts of Y0 (+), Y1 (-), Y2 (+), Y3 (-) are 24V brake power supply input points, and COM1 and COM2 are output contacts. COM3, Y4 replace K7, K07 contacts, COM4, Y6 replace K8, K08 contacts (i.e. moving the wires on the original K7, K07, K8, K08 to the corresponding replacement contacts). X0 is a starting signal input line, and is connected to X0 through K7 and K07 by a power negative lead-out wire. X1 is a well stopping signal input line, and is connected to X1 through K8 and K08 by a power supply negative lead-out wire. X2 is the proximity switch 20 signal line.

Change-over switch

The transfer switch has four groups of normally open contacts which are 1-2, 3-4, 5-6 and 7-8 respectively, and the transfer switch is connected in a cross way in a local state (no current input exists in the transfer switch in a remote state): 1 and 5 are connected with input (+), 3 and 7 are connected with input (-), 2 and 8 are connected with output in parallel, and 4 and 6 are connected with output in parallel, so that the opposite polarity output of 24V current is realized.

Proximity switch

The proximity switch 20 is of a 24V three-wire NPN type, the magnet is arranged on the output shaft of the reduction box as far as possible, and the distance between the magnet and the contact position of the proximity switch is less than 10 mm.

Description of the Start-Up procedure

The remote local switch is turned to a remote position, the RTU DI6 terminal is communicated with the COM terminal at the moment, 24V voltage is generated between the RTU DI6 terminal and the GND terminal, the main relay is electrified to be started, the 4-way contact state is changed, the power supply connection system of the PLC controller 22 is started, the 24V current input of the change-over switch is isolated, and the 24V input current enters the PLC controller 22 through the 2 nd way and the 3 rd way of the main relay in a normally open mode.

After a well starting command is sent remotely, the RTU K7 and the K07 are conducted for 5 seconds, the PLC X0 port generates an input signal, and a program is started and executed as follows: the COM1 and the COM2 output forward currents to release the brake, the output currents are closed after the time delay of 5 seconds, and the COM3 and the COM4 are conducted for 5 seconds. And when the AC contactor is electrified to start and complete self-locking, the disconnection of the Y4 port after 5 seconds has no influence, and the well starting is completed.

After the well shut-down command is sent remotely, the RTU K8 and the K08 terminals are conducted for 5 seconds, the PLC X1 port generates an input signal, and the program is started and executed as follows: when the proximity switch signals are switched on within 30 seconds, COM4 and Y6 are switched on, COM1 and COM2 output reverse current to brake, and the brake position is a fixed position. After 30 seconds, no proximity switch signal is conducted, COM4 and Y6 are conducted, COM1 and COM2 output reverse current to brake, and the brake position is a free position.

1) According to the electric brake, the brake and the release adopt quadruple remote start-stop signals, other signals are not used, and misoperation caused by signal mistransmission is effectively prevented.

2) The electric push rod with the speed of 160 mm, the stroke of 200 mm and the thrust of 100 kg is used as power, effective braking can be formed within 1.25 seconds after a signal is received, the speed and the thrust are greater than the field manual braking force, and the braking effectiveness is ensured.

3) When the invention is operated locally, an operator can be far away from the oil pumping unit to form effective braking faster than manual operation, thereby ensuring the safety in the operation process.

4) The installation of the invention does not interfere the original equipment brake system, thereby ensuring the integrity of the original system.

The structure and connection relation not mentioned are common knowledge.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.