Early warning protection device for oil pumping unit dead brake

Abstract

The invention discloses a pumping unit dead brake early warning protection device which comprises a power switch, a 220V transformer, a 12V alarm lamp, a set of limiting stopper and a 12V contactor, the 12V output end of the 220V transformer, the 12V alarm lamp and the limiting stopper are connected in series to form an electric loop, the 12V contactor is connected to the 12V alarm lamp in parallel, and the power switch is installed at the input end of the 220V transformer. A set of early warning protection device for the oil pumping unit dead brake is additionally arranged, when the oil pumping unit starts to work and an operator shakes a dead brake rocking handle to brake, a warning lamp flickers to remind people around the oil pumping unit to work, a control circuit of a starting cabinet of the oil pumping unit is powered off, the starting cabinet cannot be used, and the oil pumping unit cannot be started and stopped by an intelligent intermittent pumping system, so that misoperation is prevented. And when the work is finished and the operator shakes the dead brake rocking handle to loosen the brake, the dead brake recovers in place, the warning lamp stops flickering, the pumping unit starting cabinet control circuit recovers power supply, the starting cabinet can be normally used, and the intelligent intermittent pumping system recovers to control the pumping unit.

Description

Technical Field

[0001] The invention relates to an oil pumping unit, in particular to an early warning protection device for a dead brake of an oil pumping unit. Background Art

[0002] The pumping units currently in use all have two brake systems. One is the ordinary brake, which mainly functions to decelerate the pumping unit when the motor stops, and stop the crank of the pumping unit at the position where it needs to stop. Since it is braked by asbestos friction, the braking effect weakens after long-term use. In response to the problem of weakened ordinary brakes, a set of dead brakes is added to the ordinary reduction box or the side of the brake. The dead brake is a secondary protection installed on the basis of the ordinary brake to achieve a double insurance brake function. However, some problems also occurred during the operation. The dead brake is often forgotten to be loosened before starting the machine after the work. Even if the dead brake is loosened, the position of the down-pressure baffle of the dead brake cannot be easily determined. If the dead brake is not loosened or the down-pressure baffle is not loosened in place, the pumping unit will cause an accident when it resumes operation. The intelligent inter-pumping system for pumping units is a new technology for unmanned intelligent start-stop of low-yield wells. Before starting the pumping, for wells without video surveillance, only 30 seconds of on-site voice alarm can be relied on; at night and in stormy weather, the video is blurred, and the real-time linkage analysis of the well opening video is affected, which poses certain safety hazards. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide 一 种 The early warning protection device of the dead brake of the oil pump can accurately determine whether the dead brake is released and fully released, and after the dead brake of the oil pump is locked, the intelligent intermittent pumping system cannot start or stop the oil pump, thereby further ensuring personal safety and the normal use and life of the oil pump.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a warning protection device for dead brake of an oil pump, comprising a power switch, a 220V transformer, a 12V alarm light, a set of limiters and a 12V contactor, the 12V output end of the 220V transformer, the 12V alarm light and the limiter are connected in series to form an electrical circuit, the 12V alarm light is connected in parallel with the 12V contactor, and the power switch is installed on the input end of the 220V transformer.

[0005] The normally closed contact switch of the 12V contactor is connected to the power supply of the starter cabinet to control the start and stop of the AC contactor of the starter cabinet.

[0006] The limiter is installed on the downward pressure baffle of the dead brake of the oil pump. When the dead brake of the oil pump is locked, the downward pressure baffle of the dead brake of the oil pump is separated from the limiter, the switch of the limiter is closed, the alarm light flashes, the contactor is energized and attracted, and the control power supply of the oil pump starting cabinet is cut off; when the dead brake of the oil pump is shaken open, the downward pressure baffle of the dead brake of the oil pump contacts the limiter, the switch of the limiter is disconnected, the alarm light stops flashing, the contactor loses power and pops open, the control power supply of the oil pump starting cabinet is restored, and the intelligent inter-pumping system resumes controlling the oil pump.

[0007] The power switch is connected to the power supply of the control starting cabinet.

[0008] The beneficial effects of the present invention are: a set of early warning protection devices for the dead brake of the oil pump is installed. When the work starts, when the operator shakes the dead brake handle to brake, a warning light flashes to prompt that there are people working around the oil pump, the control circuit of the oil pump starter cabinet is powered off, the starter cabinet cannot be used, and the intelligent inter-pumping system cannot start and stop the oil pump, thereby preventing misoperation. When the work is finished, when the operator shakes the dead brake handle to release the brake, the dead brake is restored to its position, the warning light stops flashing, the control circuit of the oil pump starter cabinet resumes power supply, the starter cabinet can be used normally, and the intelligent inter-pumping system resumes controlling the oil pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The invention discloses a circuit diagram of a dead brake early warning protection device for an oil pumping unit. DETAILED DESCRIPTION

[0010] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0011] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0012] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0013] like Figure 1 As shown, the early warning protection device for dead brake of the oil pump of the present invention comprises a power switch 1, a 220V transformer 2, a 12V warning light 3, a set of limiters 5 and a 12V contactor 4, and is characterized in that the 12V output end of the 220V transformer 2, the 12V warning light 3 and the limiter 5 are connected in series to form an electric circuit, the 12V warning light 3 is connected in parallel with the 12V contactor 4, and the power switch 1 is installed on the input end of the 220V transformer 2.

[0014] The long arm electric contact switch of the 12V contactor 4 is connected to the power supply of the starter cabinet to control the start and stop of the AC contactor of the starter cabinet.

[0015] The limiter 5 is installed on the downward pressure baffle of the dead brake of the oil pumping unit. When the dead brake of the oil pumping unit is locked, the downward pressure baffle of the dead brake of the oil pumping unit is separated from the limiter, the switch of the limiter is closed, the alarm light flashes, the contactor is energized and attracted, and the control power supply of the oil pumping unit starting cabinet is cut off; when the dead brake of the oil pumping unit is shaken open, the downward pressure baffle of the dead brake of the oil pumping unit contacts the limiter, the switch of the limiter is disconnected, the alarm light stops flashing, the contactor loses power and pops open, the control power supply of the oil pumping unit starting cabinet is restored, and the intelligent inter-pumping system resumes controlling the oil pumping unit.

[0016] The power switch 1 is connected to the power supply of the control starter cabinet.

[0017] Specifically, in this embodiment, the 220V transformer model is s-50-12 12V4.2a, the 12V warning light model is red 12V, the limiter model is yblx-me-8108, and the 12V contactor model is cjx2-0901 12V.

[0018] The present invention installs a set of early warning protection devices for the dead brake of the oil pump on the oil pump, so that the dead brake of the oil pump will alarm when it is not released or not released in place, and at the same time, the oil pump start cabinet cannot be started, and the intelligent inter-pumping system cannot start and stop the oil pump. After the downward pressure baffle of the oil pump dead brake is restored to its position, the alarm is released, the oil pump start cabinet is restored, and the intelligent inter-pumping system resumes controlling the oil pump. The dead brake alarm protection device of the oil pump can not only intuitively reflect the position of the dead brake, provide warning signals, and reduce the labor intensity of operators, but also can be equipped with another layer of electrical protection to superimpose the protection modes, so that the intelligent inter-pumping system cannot start and stop the oil pump, prevent misoperation, and thus extend the service life of the equipment. It is simple to install and disassemble.

[0019] When the control power switch 1 is turned on, the transformer 2 converts the 220V voltage into a safe 12V voltage. When the work starts, when the operator shakes the dead brake handle to brake, the pressure baffle of the dead brake of the oil pump separates from the limiter 5, the limiter 5 acts, the alarm light 3 flashes, and the control contactor 4 of the oil pump start cabinet is energized and attracted, cutting off the control power of the oil pump start cabinet. When the work is finished, when the operator shakes the dead brake handle to release the brake, the pressure baffle of the dead brake of the oil pump contacts the limiter 5, the limiter 5 recovers, the alarm light 3 stops flashing, the control contactor 4 of the oil pump start cabinet loses power and pops open, the control power of the oil pump start cabinet is restored, and the intelligent inter-pumping system resumes controlling the oil pump.

[0020] In summary, the content of the present invention is not limited to the above-mentioned embodiments, and people with insight in the same field can easily propose other embodiments within the technical guiding ideology of the present invention, but such embodiments are all included in the scope of the present invention.

Claims

1. A dead brake early warning protection device for an oil pump, comprising a power switch (1), a 220V transformer (2), a 12V warning light (3), a set of limiters (5) and a 12V contactor (4), characterized in that: The 12V output end of the 220V transformer (2), the 12V warning light (3) and the limiter (5) are connected in series to form an electric circuit, the 12V warning light (3) is connected in parallel to the 12V contactor (4), and the input end of the 220V transformer (2) is equipped with a power switch (1).

2. The dead brake early warning protection device of the oil pump according to claim 1 is characterized in that: The normally closed contact switch of the 12V contactor (4) is connected to the power supply of the starter cabinet to control the start and stop of the AC contactor of the starter cabinet.

3. The early warning protection device for dead brake of the oil pump according to claim 2 is characterized in that: The limiter (5) is installed on the downward pressure baffle of the dead brake of the oil pump. When the dead brake of the oil pump is locked, the downward pressure baffle of the dead brake of the oil pump is separated from the limiter, the switch of the limiter is closed, the alarm light flashes, the contactor is energized and attracted, and the control power supply of the oil pump starting cabinet is cut off; when the dead brake of the oil pump is shaken open, the downward pressure baffle of the dead brake of the oil pump contacts the limiter, the switch of the limiter is disconnected, the alarm light stops flashing, the contactor is de-energized and pops open, the control power supply of the oil pump starting cabinet is restored, and the intelligent inter-pumping system resumes controlling the oil pump.

4. The dead brake early warning protection device of the oil pump according to claim 2 is characterized in that: The power switch (1) is connected to the power supply of the starter cabinet.

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