CN216077064U - Pumping unit system and pumping unit safety protection device - Google Patents
Pumping unit system and pumping unit safety protection device Download PDFInfo
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- CN216077064U CN216077064U CN202121612485.1U CN202121612485U CN216077064U CN 216077064 U CN216077064 U CN 216077064U CN 202121612485 U CN202121612485 U CN 202121612485U CN 216077064 U CN216077064 U CN 216077064U
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Abstract
The utility model relates to a pumping unit system and a pumping unit safety protection device, wherein the pumping unit system comprises a pumping unit and the pumping unit safety protection device, and the pumping unit safety protection device comprises at least one light beam induction module, a control module, a power supply switch arranged on a power supply line of the pumping unit and a brake for controlling the pumping unit to brake and stop; the detection signal output end of each light beam induction module is connected with the control module through an intermediate relay, the control module is in control connection with the power supply switch and the brake, and the beam induction module controls the pumping unit to stop supplying power and stopping when monitoring an object. Therefore, the utility model can effectively avoid the vicious injury event caused by the error entering the motion space of the oil pumping unit, ensure the safety of personnel and have higher safety.
Description
Technical Field
The utility model relates to an oil pumping unit system and a safety protection device of an oil pumping unit.
Background
The pumping unit generally works in the open air area of the oil field, people can mistakenly enter the pumping unit in the operation process, so that the balance block and the crank are vicious to hurt people, serious threat is caused to the safety of people, and the normal production of the oil field is influenced. In order to solve this safety problem, metal guardrail and belt protection casing are installed additional in beam-pumping unit both sides mostly to present safety protection measure, however, metal guardrail and belt protection casing mostly have very big space, personnel have probably to pass from these spaces, still have the potential safety hazard, and metal guardrail's metal structure corrodes easily, and life is limited, and metal guardrail and belt protection casing can only play passive protection, can't accomplish the automatic in time shut down brake when having personnel's mistake, the security is relatively poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an oil pumping unit system and an oil pumping unit safety protection device, which are used for solving the problem of poor safety of the conventional safety protection measures.
To achieve the above object, an aspect of the present invention includes a pumping unit system including:
the pumping unit comprises a balance block and a crank;
the pumping unit system still includes pumping unit safety device, pumping unit safety device includes:
the optical signal receiving part comprises at least one optical signal receiver corresponding to each optical signal transmitter; a balance block and a crank of the pumping unit move to form a movement space, an area within a set distance from the movement space is used as a dangerous area, and each light beam induction module is arranged on the boundary of the dangerous area and used for monitoring whether an object enters the dangerous area or not;
a control module;
the power supply switch is used for being arranged on a power supply line of the oil pumping unit; and
the brake is used for controlling the pumping unit to brake and stop, and the brake is an electromagnetic power-off brake;
the detection signal output end of each light beam induction module is connected with the control module through an intermediate relay, the control module is in control connection with the power supply switch and the brake, and the beam induction module controls the pumping unit to stop supplying power and stopping when monitoring an object.
When personnel went into the danger area by mistake, the light signal among the light beam induction module has partly to be sheltered from, light beam induction module will detect signal output and give control module, control module judges that someone is close balancing piece and the articulate motion space of beam-pumping unit, then control immediately and set up the power switch disconnection on the beam-pumping unit power supply line, the beam-pumping unit outage, and the operation of control brake, the beam-pumping unit braking is shut down, in time brake balancing piece and crank, prevent that balancing piece and crank accidental injury relevant personnel, subsequent cloth accuse personnel of being convenient for leave. Therefore, this safety protection measure is an initiative safety protection, compares in traditional metal guardrail and belt protection casing, can in time control beam-pumping unit shut down the brake when there is the personnel mistake to effectively avoid hindering the people incident because of the malignancy that the beam-pumping unit leads to is gone into to the mistake, guarantee personnel's safety, the security is higher, moreover, also need not to drop into equipment such as metal guardrail and belt protection casing, reduced the input cost, also avoided the easy problem of corroding of metal guardrail's metallic structure.
Furthermore, in order to improve the detection reliability, the light beam sensing module is a grating, and the safety protection device of the oil pumping unit comprises two gratings, wherein one grating is horizontally arranged below the motion space; the other grating is vertically arranged in front of the motion space and is perpendicular to the axis of the motion space.
Furthermore, in order to improve the control reliability, the control module controls the power supply switch through the power supply control loop, the power supply switch is a first normally open contact of the power supply relay, a starting switch and a coil of the power supply relay are connected in series on the power supply control loop, and two ends of the starting switch are connected in parallel with a second normally open contact of the power supply relay.
Furthermore, when the personnel leave the distribution control range, the oil pumping unit can be automatically restarted within a set time, the influence on normal production is avoided, and the operation efficiency is improved.
Furthermore, in order to improve the operation reliability of the pumping unit, a first relay coil is connected to the power supply control loop in series, the starting switch and the first relay coil are connected in series and then connected with a second normally open contact of the power supply relay in parallel, and the normally open contact of the first relay is connected with the control module.
The utility model also provides a safety protection device of the oil pumping unit, which comprises:
the optical signal receiving part comprises at least one optical signal receiver corresponding to each optical signal transmitter; a balance block and a crank of the pumping unit move to form a movement space, an area within a set distance from the movement space is used as a dangerous area, and each light beam induction module is arranged on the boundary of the dangerous area and used for monitoring whether an object enters the dangerous area or not;
a control module;
the power supply switch is used for being arranged on a power supply line of the oil pumping unit; and
the brake is used for controlling the pumping unit to brake and stop, and the brake is an electromagnetic power-off brake;
the detection signal output end of each light beam induction module is connected with the control module through an intermediate relay, the control module is in control connection with the power supply switch and the brake, and the beam induction module controls the pumping unit to stop supplying power and stopping when monitoring an object.
Compared with the traditional metal guardrail and belt protective cover, the utility model can timely control the pumping unit to stop and brake when a person mistakenly enters the pumping unit, thereby effectively avoiding a vicious injury event caused by mistakenly entering the pumping unit, ensuring the safety of the person, having higher safety, and avoiding the problems of low investment cost and easy corrosion of the metal structure of the metal guardrail because equipment such as the metal guardrail and the belt protective cover is not needed to be invested.
Furthermore, in order to improve the detection reliability, the light beam sensing module is a grating, and the pumping unit safety protection device comprises two gratings, wherein one grating is horizontally arranged below the motion space; the other grating is used for being vertically arranged in front of the motion space and is perpendicular to the axis of the motion space.
Furthermore, in order to improve the control reliability, the control module controls the power supply switch through the power supply control loop, the power supply switch is a first normally open contact of the power supply relay, a starting switch and a coil of the power supply relay are connected in series on the power supply control loop, and two ends of the starting switch are connected in parallel with a second normally open contact of the power supply relay.
Furthermore, when the personnel leave the distribution control range, the oil pumping unit can be automatically restarted within a set time, the influence on normal production is avoided, and the operation efficiency is improved.
Furthermore, in order to improve the operation reliability of the pumping unit, a first relay coil is connected to the power supply control loop in series, the starting switch and the first relay coil are connected in series and then connected with a second normally open contact of the power supply relay in parallel, and the normally open contact of the first relay is connected with the control module.
Drawings
FIG. 1 is a simplified diagram of the structure of the pumping unit provided by the present invention;
FIG. 2 is a block diagram of the safety device of the pumping unit according to the present invention;
FIG. 3 is a simplified structural diagram of a safety grating of the safety protection device for a pumping unit according to the present invention;
FIG. 4 is a schematic diagram of a partial installation position of a safety grating of the safety protection device of the pumping unit provided by the utility model;
FIG. 5 is a relay wiring diagram of the pumping unit system provided by the present invention;
FIG. 6 is a control module I/O wiring diagram of the pumping unit system provided by the present invention;
FIG. 7 is a waveform diagram of the internal control module of the pumping unit system provided by the present invention;
the device comprises a furnace end 1, a walking beam 2, a crank 3, a balance block 4, a base 5, a reduction box 6, a motor 7, a circuit control device 8, a crank and balance block movement plane 9, a front plane safety grating transmitter 10, a front plane safety grating receiver 11, a lower plane safety grating transmitter 12 and a lower plane safety grating receiver 13.
Detailed Description
The embodiment of the pumping unit system comprises:
this embodiment provides a beam-pumping unit system, includes: oil pumping machine and oil pumping machine safety device. First, briefly describing the structure of the pumping unit, as shown in fig. 1, the pumping unit includes: furnace end 1, walking beam 2, crank 3, balancing piece 4, base 5, reducing gear box 6, motor 7 and circuit control device 8.
The safety protection device of the oil pumping unit comprises a light beam induction module, a control module, a brake, a power supply switch and a power supply control loop.
The control module is, for example, a Programmable Logic Controller (PLC), such as the siemens 200 PLC, but may also be another type of controller, such as a single chip microcomputer.
The number of the light beam induction modules is at least one. The light beam sensing module is also called a light beam blocking type sensor and comprises two parts, namely a light signal sending part and a light signal receiving part, wherein the light signal sending part comprises at least one light signal sender, the light signal receiving part comprises at least one light signal receiver corresponding to each light signal sender, each light signal sender can send infrared light beams and is received by the corresponding light signal receiver, the number of the light signal senders and the number of the light signal receivers are set according to actual needs, the more the number is, the higher the detection density is, and the higher the detection precision is. When a plurality of optical signal transmitters and optical signal receivers are arranged, light rays between all the optical signal transmitters and the corresponding optical signal receivers form a light curtain, in this embodiment, the light beam sensing module is specifically a detection mechanism safety grating (hereinafter, referred to as a safety grating), as shown in fig. 3, the safety grating is essentially an infrared safety protection device, and the model is an ESN series.
When the balance weight 4 and the crank 3 move, a cylindrical moving area is formed, and the moving area of the cylindrical moving area is the moving space of the balance weight 4 and the crank 3, as shown in fig. 4, then, the axis of the cylindrical moving area is the axis of the moving space. A dangerous area is defined, and an area within a set distance from the movement space is used as the dangerous area, so that when an object enters the dangerous area, the dangerous area represents the movement space close to the balance weight 4 and the crank 3, and the possibility of accidental injury by the balance weight 4 and the crank 3 exists. Then, each safety grating is arranged at the boundary of the dangerous area, and each safety grating can monitor whether an object enters the dangerous area. Therefore, the monitoring area formed by the safety grating can be understood as the dangerous area, that is, the monitoring area formed by the light curtain of each safety grating is the dangerous area. When no object enters the dangerous area, the light signal receiving part can receive the complete light signal, and the light signal receiving part represents that no object is close to the movement space of the balance block 4 and the crank 3; when an object enters a dangerous area, part of the light curtain is shielded, and the light signal receiving part cannot receive a complete light signal, which indicates that the object is close to the movement space of the balance block 4 and the crank 3. The optical signal receiving part outputs corresponding detection signals according to whether the complete optical signal is received, such as: when the optical signal is partially blocked, a high level signal is output, and when the optical signal is not blocked, a low level signal is output.
In order to form a reliable monitoring area and realize more azimuth monitoring, more than one safety grating needs to be arranged, and the balance weight 4 and the crank 3 are arranged on both sides of a common pumping unit, so that the balance weight 4 and the crank 3 on each side need to be respectively monitored in order to monitor the balance weight 4 and the crank 3 on each side. Then, two safety gratings are arranged in the embodiment, namely a front plane safety grating and a lower plane safety grating, the front plane safety grating comprises a front plane safety grating transmitter 10 and a front plane safety grating receiver 11, the front plane safety grating transmitter 10 and the front plane safety grating receiver 11 are fixed on a frame of the oil pumping unit through bolts, and a light curtain formed by the front plane safety grating is perpendicular to the axes of the balance block 4 and the motion space of the crank 3; the lower plane safety grating comprises a lower plane safety grating transmitter 12 and a lower plane safety grating receiver 13, the lower plane safety grating transmitter 12 and the lower plane safety grating receiver 13 are fixed on a base of the pumping unit through bolts, and a light curtain formed by the lower plane safety grating is parallel to the axis of a motion space of the balance block 4 and the crank 3.
The power supply switch in this example is a first normally open contact of the power supply relay KM, and a corresponding power supply control loop is shown in fig. 5, and the first normally open contact of the power supply relay KM is arranged on a power supply line of the pumping unit and is used for cutting off a working power supply of a motor of the pumping unit. The power supply control circuit is provided with a normally closed contact of a first relay KM1, a starting switch SB1, a coil of a first relay KM4 and a coil of a power supply relay KM in series, wherein two ends of the coil of the starting switch SB1 and the coil of the first relay KM4 are connected with a second normally open contact of the power supply relay KM, so that the situation that the coil of the KM is electrified after the starting switch returns to the original position can be continuously kept; in addition, in order to realize automatic power supply after the power supply switch is powered off, the two ends of the second normally open contact of the power supply relay KM are also connected with the switch contact of the restarting relay KM3 in parallel, so that the function of switching on the working power supply for the motor of the pumping unit again is realized, and the restarting of the pumping unit is realized. Wherein the coil of the first relay KM1 and the coil of the restarting relay KM3 are both in control connection with a programmable controller, as shown in FIG. 2.
The programmable controller is also in control connection with a second relay KM2, the second relay KM2 is used for driving the brake to act, and the purpose of controlling the brake is realized by controlling the second relay KM2, so that the pumping unit is controlled to brake and stop. Such as: the contact of the second relay KM2 was set on the power supply line of the brake, and the programmable controller controlled the control coil connected to the second relay KM 2. Of course, the programmable controller can also directly control the connection brake. In this embodiment, the brake is an electromagnetic power-off brake (i.e., an electromagnetic power-off brake), but the brake may be other types of brakes. The electromagnetic power-off brake is a B series-general spring pressurizing brake, a half-wave rectifier is externally connected with the electromagnetic power-off brake, alternating current is rectified into direct current, a winding generates a magnetic field after power is applied, an armature is sucked back, meanwhile, the armature compresses a spring fixed in an iron core, when power is off, the winding discharges, the spring ejects the armature, and the armature generates braking torque on a friction disc to stop a rotating shaft.
The light beam induction module sends a monitoring signal to the programmable controller through the intermediate relay KA, as shown in fig. 6, when the light beam induction module sends an electric signal, the contact of the intermediate relay KA is attracted, the input terminals I0.0, I0.1, I0.2 and I0.3 of the programmable controller PLC obtain signals (only one signal is triggered by four signals), and then the Q1.0 and Q1.1 ends of the PLC output signals to the coil KM1 and the coil KM2, so that the main contacts of the KM1 and the KM2 perform corresponding actions, (KM1 is disconnected once, the motor is powered off once when the KM1 is disconnected, and the KM2 is continuously disconnected, so that the motor is continuously braked), so that the motor is powered off and braked. When the light beam sensing module detects no abnormity, no output signal exists, the contact of the intermediate relay KA is disconnected, the input terminals I0.0, I0.1, I0.2 and I0.3 of the PLC have no signal input, the CPU of the PLC carries out programming module calculation, when the set time T is up, the output terminals Q1.0 and Q0.3 of the PLC output signals to the KM2 and KM3 coils, so that the corresponding contacts act, the KM2 main contact is released from attracting and braking, and the KM3 attracts and acts once (only once, so that circuit faults caused by repeated starting of the pumping unit are avoided), so that the motor is started, and the specific control waveform is shown in figure 7.
The working engineering is as follows: when the system is normally started, the QF circuit breaker of the power distribution room is closed, the starting switch SB1 is pressed, the KM coil is electrified, and meanwhile, the two normally open contacts of the KM are attracted, and the motor supplies power; when the machine is normally stopped, a stop button is pressed to cut off the power of the motor. When someone enters a dangerous area, an optical signal is partially shielded, the light beam induction module sends an electric signal to attract the KA contact of the intermediate relay, the corresponding input terminal of the PLC obtains the signal, the PLC outputs the signal to the KM1 coil and the KM2 coil, the KM1 coil and the KM2 coil are electrified, the normally closed contact of the KM1 is disconnected, the normally closed contact of the KM2 is disconnected, the motor is powered off when the KM1 is disconnected once, the KM2 is continuously disconnected to continuously brake, power failure and brake of the motor are realized, and the occurrence of serious injury accidents is avoided. After personnel leave, the light signal of beam induction module is not sheltered from, the beam induction module has no output signal, auxiliary relay KA contact disconnection, PLC's corresponding input terminal does not have signal input, PLC's CPU carries out the module calculation of programming, when the settlement time T, PLC's output signal gives KM2 and KM3 coil, make corresponding contact make the action, KM2 main contact actuation braking is relieved, KM3 actuation once (only once, avoid repeatedly starting the beam-pumping unit, cause circuit fault), make the motor start, thereby avoid influencing the oil field normal production. In addition, when oil field staff normally works near the pumping unit, the fault touch makes the pumping unit stop the machine and brake, and the beam sensing module does not monitor when unusual, the staff can press the start button SB1, make first relay KM4 coil electrified, contact through KM4 to PLC output a manual start control signal, PLC resets immediately according to first relay KM1 and second relay KM2 of this signal control, moreover, make the pumping unit restart immediately, avoid influencing oil field normal production.
A specific arrangement of the safety grating is given above, and of course, the safety grating may have other arrangements besides the above arrangement, but it needs to satisfy: each light beam induction module is arranged at the boundary of the dangerous area and used for monitoring whether an object enters the dangerous area or not. As another embodiment, in order to improve the monitoring accuracy, more safety barriers may be provided, which are disposed at corresponding positions around the movement space of the weight 4 and the crank 3, such as: on the basis of the above embodiment, the safety light barrier is vertically arranged in the left area of the balance weight 4 and the crank 3 shown in fig. 1 and is parallel to the axis of the motion space; for another example: a plurality of safety gratings are directly surrounded to form a rectangle, the area surrounded by the rectangle is a monitoring area, and the balance block 4, the crank 3 and even the whole oil pumping unit are arranged in the monitoring area.
In the embodiment, the function of setting the restart switch is that the programmable controller controls the pumping unit to automatically restart when the restart condition is met; the manual starting button is arranged to have the following functions: when the staff touch safety grating by mistake and make the pumping unit stop and brake, the pumping unit is restarted immediately by pressing the manual start button, and the influence on the normal production of the oil field is avoided. Therefore, the restart switch and the manual start button are optimized embodiments, and as other embodiments, neither the restart switch nor the manual start button may be provided.
Embodiments of a safety protection device for a pumping unit
The specific structure of the pumping unit safety protection device of the utility model has been explained in detail in the embodiment of the pumping unit system, and is not repeated here.
The specific embodiments are given above, but the present invention is not limited to the described embodiments. The basic idea of the present invention lies in the above basic scheme, and it is obvious to those skilled in the art that no creative effort is needed to design various modified models, formulas and parameters according to the teaching of the present invention. Variations, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the utility model, and still fall within the scope of the utility model.
Claims (10)
1. A pumping unit system comprising:
the pumping unit comprises a balance block and a crank;
it is characterized in that the pumping unit system also comprises a pumping unit safety protection device,
the beam-pumping unit safety device includes:
the optical signal receiving part comprises at least one optical signal receiver corresponding to each optical signal transmitter; a balance block and a crank of the pumping unit move to form a movement space, an area within a set distance from the movement space is used as a dangerous area, and each light beam induction module is arranged on the boundary of the dangerous area and used for monitoring whether an object enters the dangerous area or not;
a control module;
the power supply switch is used for being arranged on a power supply line of the oil pumping unit; and
the brake is used for controlling the pumping unit to brake and stop, and the brake is an electromagnetic power-off brake;
the detection signal output end of each light beam induction module is connected with the control module through an intermediate relay, the control module is in control connection with the power supply switch and the brake, and the beam induction module controls the pumping unit to stop supplying power and stopping when monitoring an object.
2. The pumping unit system according to claim 1, wherein the beam sensing module is a grating, and the pumping unit safety protection device comprises two gratings, wherein one grating is horizontally arranged below the motion space; the other grating is vertically arranged in front of the motion space and is perpendicular to the axis of the motion space.
3. The oil pumping unit system according to claim 1 or 2, wherein the control module controls the power supply switch through a power supply control loop, the power supply switch is a first normally open contact of a power supply relay, a starting switch and a coil of the power supply relay are connected in series on the power supply control loop, and a second normally open contact of the power supply relay is connected in parallel at two ends of the starting switch.
4. The pumping unit system according to claim 3, wherein the second normally open contact of the power supply relay is connected to a restart switch, and the restart switch is controlled by the control module and is used for controlling the pumping unit to restart after a set time of the pumping unit shutdown.
5. The oil pumping unit system of claim 3, wherein a first relay coil is connected in series to the power supply control loop, a starting switch is connected in series with the first relay coil and then connected in parallel with a second normally open contact of the power supply relay, and the normally open contact of the first relay is connected with the control module.
6. A safety protection device of a pumping unit is characterized by comprising:
the optical signal receiving part comprises at least one optical signal receiver corresponding to each optical signal transmitter; a balance block and a crank of the pumping unit move to form a movement space, an area within a set distance from the movement space is used as a dangerous area, and each light beam induction module is arranged on the boundary of the dangerous area to monitor whether an object enters the dangerous area;
a control module;
the power supply switch is used for being arranged on a power supply line of the oil pumping unit; and
the brake is used for controlling the pumping unit to brake and stop, and the brake is an electromagnetic power-off brake;
the detection signal output end of each light beam induction module is connected with the control module through an intermediate relay, the control module is in control connection with the power supply switch and the brake, and the beam induction module controls the pumping unit to stop supplying power and stopping when monitoring an object.
7. The pumping unit safety protection device of claim 6, wherein the light beam sensing module is a grating, and the pumping unit safety protection device comprises two gratings, wherein one grating is horizontally arranged below the motion space; the other grating is used for being vertically arranged in front of the motion space and is perpendicular to the axis of the motion space.
8. The safety protection device for the oil pumping unit according to claim 6 or 7, wherein the control module controls the power supply switch through a power supply control loop, the power supply switch is a first normally open contact of a power supply relay, a starting switch and a coil of the power supply relay are connected in series on the power supply control loop, and a second normally open contact of the power supply relay is connected in parallel at two ends of the starting switch.
9. The safety protection device for the oil pumping unit according to claim 8, wherein the two ends of the second normally open contact of the power supply relay are connected with a restart switch, and the restart switch is controlled by the control module and is used for controlling the oil pumping unit to restart after a set time of the shutdown of the oil pumping unit.
10. The safety protection device of the oil pumping unit according to claim 8, wherein a first relay coil is connected in series on the power supply control loop, a starting switch and the first relay coil are connected in series and then connected in parallel with a second normally open contact of the power supply relay, and the normally open contact of the first relay is connected with the control module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121612485.1U CN216077064U (en) | 2021-07-15 | 2021-07-15 | Pumping unit system and pumping unit safety protection device |
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| CN202121612485.1U CN216077064U (en) | 2021-07-15 | 2021-07-15 | Pumping unit system and pumping unit safety protection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115061532A (en) * | 2022-06-10 | 2022-09-16 | 北京主导时代科技有限公司 | Triggering reset device of safe touch edge |
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2021
- 2021-07-15 CN CN202121612485.1U patent/CN216077064U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115061532A (en) * | 2022-06-10 | 2022-09-16 | 北京主导时代科技有限公司 | Triggering reset device of safe touch edge |
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