Automatic cutting-off device of frequency conversion cabinet for oil pumping unit

Abstract

The utility model discloses an automatic cutting device of a frequency conversion cabinet for an oil pumping unit, which relates to the technical field of automatic cutting devices and comprises an automatic cutting device body, an assembly hanging lug and a bedplate, a movable sleeve is mounted on the outer wall of the bedplate, and a movable sleeve rod is movably mounted on the inner wall of the movable sleeve. A plurality of sets of locking through grooves are formed in the inner wall of the movable sleeve rod, a locking screw groove is formed in the outer wall of the locking clamping plate, and a locking screw is installed on the outer wall of the movable sleeve rod. According to the utility model, through the installation of the adjusting mechanism, firstly, the assembly hanging lug is pulled according to the assembly lug hole of the frequency conversion cabinet, the movable sleeve rod moves in the movable sleeve, after the assembly hanging lug is moved to a proper position, the locking screw rod is fixed in the locking screw groove through the locking through groove, and then the position of the assembly hanging lug is fixed; and the positions of the assembly hanging lugs and the assembly lug holes can be matched, so that the automatic cut-off device body is suitable for different frequency conversion cabinets.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic cutting devices, in particular to an automatic cutting device for a frequency conversion cabinet used for an oil pumping unit. Background Art

[0002] The frequency converter cabinet for oil pumping units is a frequency conversion technology for oil pumping units, which overcomes the shortcomings of other technologies. The input end of the frequency converter host is connected to the three-phase power supply through a circuit breaker, and its output end is connected to the oil pumping unit motor. In addition, the control terminals of the frequency converter host are respectively connected to the manual speed regulating potentiometer and the normally open point of the relay, and its main bus is connected to the brake unit, which is connected to the brake resistor. The electric heater and spare parts are also connected to the three-phase power supply. When the voltage inside the frequency converter host is too high, the automatic cut-off device of the frequency converter cabinet for oil pumping units is required to cut off the line and power off, thereby protecting the components inside the frequency converter.

[0003] Patent document CN211087492U discloses a frequency conversion cabinet automatic alarm cut-off device, which discloses "including a device body, a first connection line is fixedly installed on the right end of the device body, a second connection line is fixedly installed on the left end of the device body, and a fixing device is fixedly installed on the bottom end of the device body, a round hole is opened on the surface of the fixing device, and a wire is electrically connected to the surface of the first connection line. The utility model is provided with a telescopic rod, a metal block, a controller, and a voltage detection device, so that when the voltage of the frequency conversion cabinet is too high, the voltage detection device will transmit information to the controller, the controller controls the telescopic rod to shorten, and then the telescopic rod drives the metal block to move, and then a short circuit will appear in the circuit of the frequency conversion cabinet, and when the voltage inside the frequency conversion cabinet returns to normal, the controller will control the telescopic rod to extend, and the telescopic rod drives the metal block to connect the short-circuited part of the frequency conversion cabinet, which greatly increases the practicality of the device."

[0004] However, the automatic alarm cutting device for a frequency converter cabinet in the above-mentioned public document mainly considers that when the voltage inside the frequency converter cabinet returns to normal, the controller will control the telescopic rod to extend, and the telescopic rod drives the metal block to connect the short-circuited part of the frequency converter cabinet, which greatly increases the practicality of the device. It is inconvenient to adjust the distance of the assembly hanging ears, because the position of the existing assembly hanging ears is fixed, and the position of the assembly ear holes of the frequency converter cabinets in different situations is not fixed, which makes the assembly hanging ears unable to match the position of the assembly ear holes, and the automatic cutting device body cannot be installed on different frequency converter cabinets.

[0005] In view of this, it is necessary to develop an adjustment mechanism so as to adjust the distance of the assembly lugs on the automatic cutting device. Utility Model Content

[0006] The utility model aims to provide an automatic cut-off device for a frequency conversion cabinet used in an oil pumping unit, so as to solve the technical problem of improving the adaptability of the automatic cut-off device for a frequency conversion cabinet used in an oil pumping unit proposed in the above background technology.

[0007] To achieve the above object, the utility model provides the following technical solution: an automatic cutting device for a frequency conversion cabinet for an oil pump, comprising: an automatic cutting device body, a mounting lug is installed at the bottom of the automatic cutting device body, and an adjustment mechanism is provided at the bottom of the automatic cutting device body, and the adjustment mechanism is used to adjust the distance of the mounting lug;

[0008] The adjusting mechanism includes a table, which is arranged on the inner wall of the automatic cutting device body, a movable sleeve is installed on the outer wall of the table, a movable sleeve rod is movably installed on the inner wall of the movable sleeve, the inner wall of the automatic cutting device body is provided with a movable groove, a sealing ring is installed on the inner wall of the movable groove, and one end of the movable sleeve rod passes through the interior of the sealing ring, the inner wall of the movable sleeve rod is provided with a plurality of groups of locking through grooves, and the bottom of the movable sleeve rod is fixedly connected to the outer wall of the assembly hanging ear, a locking card plate is installed at the bottom of the automatic cutting device body, the outer wall of the locking card plate is provided with a locking screw groove, a locking screw is installed on the outer wall of the movable sleeve rod, and one end of the locking screw extends to the interior of the locking screw groove.

[0009] Preferably, a connecting wire is embedded in the inner wall of the automatic cutting device body, a voltage detection device is installed on the inner wall of the automatic cutting device body, a controller is installed on the inner wall of the automatic cutting device body, a short-circuit pole is installed on the top of the automatic cutting device body, and a metal block is installed on the output end of the short-circuit pole.

[0010] Preferably, a heat dissipation mechanism is provided at the bottom of the automatic cutting device body, and the heat dissipation mechanism is used to dissipate heat inside the automatic cutting device body.

[0011] Preferably, the heat dissipation mechanism comprises a temperature sensing block, and the temperature sensing block is arranged on the inner wall of the automatic cutting device body.

[0012] Preferably, a heat dissipation frame is provided at the bottom of the automatic cutting device body, a heat dissipation fan is installed on the inner wall of the heat dissipation frame, a circulation groove is provided on the inner wall of the circulation groove, and a dustproof net is installed on the inner wall of the circulation groove.

[0013] Preferably, an air inlet groove is provided on the inner wall of the automatic cutting device body.

[0014] Preferably, a sealing frame is installed at the bottom of the heat dissipation frame, a sealing pole is installed on the outer wall of the sealing frame, a sealing connecting rod is installed at the output end of the sealing pole, and a sealing block is installed on the outer wall of the sealing connecting rod.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model adjusts the distance of the assembly hanging ear by installing an adjustment mechanism. The position of the existing assembly hanging ear is fixed, while the position of the assembly ear hole of the frequency conversion cabinet is not fixed in different situations, which causes the assembly hanging ear to be unable to match the position of the assembly ear hole, and causes the automatic cutting device body to be unable to be installed on different frequency conversion cabinets. Therefore, it is necessary to improve this. First, according to the assembly ear hole of the frequency conversion cabinet, the assembly hanging ear is pulled, and the moving sleeve rod moves in the moving sleeve. After the assembly hanging ear is moved to a suitable position, the locking screw is fixed to the locking screw groove through the locking through groove, and the position of the assembly hanging ear is fixed, so that the position of the assembly hanging ear can be matched with the position of the assembly ear hole, so that the automatic cutting device body is suitable for different frequency conversion cabinets;

[0017] 2. The utility model dissipates heat inside the automatic cutting device body by installing a heat dissipation mechanism. Long-term operation of the automatic cutting device body will cause the temperature of its internal components to be too high, and too high temperature will cause slow reaction, resulting in the inability to accurately and quickly cut off the circuit. Therefore, it is necessary to improve this. First, the temperature sensing block detects the temperature inside the automatic cutting device body. When the temperature is too high, the temperature sensing block receives the signal and controls the sealing pole to drive the sealing connecting rod and the sealing block to move, so that the sealing block does not seal the circulation groove, allowing air to circulate inside the heat dissipation frame. Subsequently, the heat dissipation fan works to blow air through the air inlet groove to dissipate heat inside the automatic cutting device body, thereby avoiding the situation where the temperature of the internal components of the automatic cutting device body is too high and causes slow reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a front structural schematic diagram of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the tabletop portion of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the locking card part of the utility model;

[0022] Figure 5 It is a partial structural schematic diagram of the heat dissipation frame of the utility model.

[0023] In the figure: 1. Automatic cutting device body; 2. Connecting wires; 3. Voltage detection device; 4. Controller; 5. Short-circuit pole; 6. Metal block; 7. Assembly ear; 8. Table; 9. Moving sleeve; 10. Moving sleeve rod; 11. Moving groove; 12. Sealing ring; 13. Locking through groove; 14. Locking card plate; 15. Locking screw groove; 16. Locking screw; 17. Temperature sensing block; 18. Heat dissipation frame; 19. Heat dissipation fan; 20. Air inlet groove; 21. Circulation groove; 22. Dustproof net; 23. Sealing frame; 24. Sealed pole; 25. Sealed connecting rod; 26. Sealing block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" 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, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on 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.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "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 an indirect connection 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.

[0027] See also Figure 1 and Figure 2, an automatic cut-off device for a frequency conversion cabinet for an oil pumping unit, comprising: an automatic cut-off device body 1, an assembly ear 7 is installed at the bottom of the automatic cut-off device body 1, a connecting wire 2 is inlaid and installed on the inner wall of the automatic cut-off device body 1, a voltage detection device 3 is installed on the inner wall of the automatic cut-off device body 1, a controller 4 is installed on the inner wall of the automatic cut-off device body 1, a short-circuit pole 5 is installed on the top of the automatic cut-off device body 1, and a metal block 6 is installed at the output end of the short-circuit pole 5. First, the automatic cut-off device body 1 is installed using the assembly ear 7. When the internal voltage of the frequency conversion cabinet for the oil pumping unit is too high, the voltage detection device 3 will transmit information to the controller 4, and the controller 4 will control the short-circuit pole 5 to contract and drive the metal block 6 to move, and then the line in the automatic cut-off device body 1 will be disconnected, which will cause a short circuit in the circuit of the frequency conversion cabinet, thereby protecting the electronic components inside the frequency conversion cabinet.

[0028] See also Figure 2 , Figure 3 and Figure 4 The bottom of the automatic cutting device body 1 is provided with an adjustment mechanism, and the adjustment mechanism is used to adjust the distance of the assembly hanging ear 7. The adjustment mechanism includes a table 8, and the table 8 is arranged on the inner wall of the automatic cutting device body 1. A movable sleeve 9 is installed on the outer wall of the table 8. A movable sleeve rod 10 is movably installed on the inner wall of the movable sleeve 9. The inner wall of the automatic cutting device body 1 is provided with a movable groove 11, and a sealing ring 12 is installed on the inner wall of the movable groove 11, and one end of the movable sleeve rod 10 passes through the inside of the sealing ring 12. The inner wall of the movable sleeve rod 10 is provided with a plurality of locking through grooves 13, and the bottom of the movable sleeve rod 10 is fixedly connected to the outer wall of the assembly hanging ear 7. A locking card plate 14 is installed at the bottom of the automatic cutting device body 1, and a locking screw groove 15 is provided on the outer wall of the locking card plate 14. The outer wall of the movable sleeve rod 10 is provided with a locking screw groove 15. There is a locking screw 16, and one end of the locking screw 16 extends to the inside of the locking screw groove 15. The position of the existing assembly ear 7 is fixed, while the position of the assembly ear hole of the frequency converter cabinet in different situations is not fixed, which causes the assembly ear 7 to be unable to match the position of the assembly ear hole, and causes the automatic cutting device body 1 to be unable to be installed on different frequency converter cabinets, so it is necessary to improve this. First, according to the assembly ear hole of the frequency converter cabinet, pull the assembly ear 7, then the moving sleeve rod 10 moves in the moving sleeve 9, and after the assembly ear 7 is moved to a suitable position, the locking screw 16 is fixed to the locking screw groove 15 through the locking through groove 13, and the position of the assembly ear 7 is fixed, so that the assembly ear 7 can be matched with the position of the assembly ear hole, so that the automatic cutting device body 1 is suitable for different frequency converter cabinets.

[0029] See also Figure 2 and Figure 5A heat dissipation mechanism is provided at the bottom of the automatic cutting device body 1, and the heat dissipation mechanism is used to dissipate heat inside the automatic cutting device body 1. The heat dissipation mechanism includes a temperature sensing block 17, and the temperature sensing block 17 is arranged on the inner wall of the automatic cutting device body 1. A heat dissipation frame 18 is provided at the bottom of the automatic cutting device body 1, and a heat dissipation fan 19 is installed on the inner wall of the heat dissipation frame 18. A flow groove 21 is provided on the inner wall of the flow groove 21, and a dustproof net 22 is installed on the inner wall of the flow groove 21. An air inlet groove 20 is provided on the inner wall of the automatic cutting device body 1, and a sealing frame 23 is installed at the bottom of the heat dissipation frame 18. A sealing pole 24 is installed on the outer wall of the sealing pole 23, and a sealing connecting rod 25 is installed on the output end of the sealing connecting rod 24, and a sealing block 26 is installed on the outer wall of the sealing connecting rod 25 , the long-term operation of the automatic cutting device body 1 will cause the temperature of its internal components to be too high, and the excessive temperature will cause a slow reaction, which will make it impossible to cut off the circuit accurately and quickly, so it is necessary to improve this. First, the temperature sensing block 17 detects the temperature inside the automatic cutting device body 1. When the temperature is too high, the temperature sensing block 17 receives a signal and controls the sealing pole 24 to drive the sealing connecting rod 25 and the sealing block 26 to move, so that the sealing block 26 does not seal the flow groove 21, so that the air inside the heat dissipation frame 18 can circulate, and then the heat dissipation fan 19 works to blow air through the air inlet groove 20 to dissipate heat inside the automatic cutting device body 1, thereby avoiding the situation where the temperature of the internal components of the automatic cutting device body 1 is too high and causes a slow reaction.

[0030] Working principle, first use the assembly ear 7 to install the automatic cutting device body 1, when the internal voltage of the frequency converter cabinet used for the oil pump is too high, the voltage detection device 3 will transmit the information to the controller 4, the controller 4 controls the short-circuit pole 5 to contract and drive the metal block 6 to move, and then the line is disconnected in the automatic cutting device body 1, which causes a short circuit in the circuit of the frequency converter cabinet, thereby protecting the electronic components inside the frequency converter cabinet. The position of the existing assembly ear 7 is fixed, and the assembly ear hole position of the frequency converter cabinet in different situations is not fixed, which makes the assembly ear 7 unable to match the assembly ear hole position, and makes the automatic cutting device body 1 unable to be installed on different frequency converter cabinets, so it is necessary to improve this. First, according to the assembly ear hole of the frequency converter cabinet, pull the assembly ear 7, then the movable sleeve rod 10 moves in the movable sleeve 9, and after moving the assembly ear 7 to the appropriate position, fix the locking screw 16 to the lock through the locking groove 13. In the fixed screw groove 15, the position of the assembly ear 7 is fixed, so that the assembly ear 7 can match the position of the assembly ear hole, so that the automatic cutting device body 1 is suitable for different frequency conversion cabinets. The automatic cutting device body 1 will cause the temperature of its internal components to be too high when it works for a long time, and the high temperature will cause a slow reaction, which will make it impossible to accurately and quickly cut off the circuit. Therefore, it is necessary to improve this. First, the temperature sensing block 17 detects the temperature inside the automatic cutting device body 1. When the temperature is too high, the temperature sensing block 17 receives a signal and controls the sealing pole 24 to drive the sealing connecting rod 25 and the sealing block 26 to move, so that the sealing block 26 does not seal the circulation groove 21, so that the air inside the heat dissipation frame 18 can circulate, and then the heat dissipation fan 19 works through the air inlet groove 20 to blow air to the inside of the automatic cutting device body 1 to dissipate heat, thereby avoiding the situation where the temperature of the internal components of the automatic cutting device body 1 is too high and causes a slow reaction.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An automatic cut-off device for a frequency conversion cabinet for an oil pump, comprising: an automatic cut-off device body (1), a mounting lug (7) being installed at the bottom of the automatic cut-off device body (1), characterized in that: An adjustment mechanism is provided at the bottom of the automatic cutting device body (1), and the adjustment mechanism is used to adjust the distance of the mounting lug (7); The adjustment mechanism comprises a table (8), wherein the table (8) is arranged on the inner wall of the automatic cutting device body (1), a movable sleeve (9) is installed on the outer wall of the table (8), a movable sleeve rod (10) is movably installed on the inner wall of the movable sleeve (9), a movable groove (11) is provided on the inner wall of the automatic cutting device body (1), a sealing ring (12) is installed on the inner wall of the movable groove (11), and one end of the movable sleeve rod (10) passes through the interior of the sealing ring (12). The inner wall of the movable sleeve rod (10) is provided with a plurality of locking through grooves (13), and the bottom of the movable sleeve rod (10) is fixedly connected to the outer wall of the mounting hook (7). The bottom of the automatic cutting device body (1) is provided with a locking card plate (14), and the outer wall of the locking card plate (14) is provided with a locking screw groove (15). The outer wall of the movable sleeve rod (10) is provided with a locking screw rod (16), and one end of the locking screw rod (16) extends to the inside of the locking screw groove (15).

2. The automatic cut-off device for a frequency conversion cabinet for an oil pumping unit according to claim 1 is characterized in that: A connecting wire (2) is embedded and installed on the inner wall of the automatic cutting device body (1), a voltage detection device (3) is installed on the inner wall of the automatic cutting device body (1), a controller (4) is installed on the inner wall of the automatic cutting device body (1), a short-circuit pole (5) is installed on the top of the automatic cutting device body (1), and a metal block (6) is installed on the output end of the short-circuit pole (5).

3. The automatic cut-off device for a frequency conversion cabinet for an oil pumping unit according to claim 1 is characterized in that: A heat dissipation mechanism is provided at the bottom of the automatic cutting device body (1), and the heat dissipation mechanism is used to dissipate heat inside the automatic cutting device body (1).

4. The automatic cut-off device for a frequency conversion cabinet for an oil pumping unit according to claim 3 is characterized in that: The heat dissipation mechanism comprises a temperature sensing block (17), and the temperature sensing block (17) is arranged on the inner wall of the automatic cutting device body (1).

5. The automatic cut-off device for a frequency conversion cabinet for an oil pumping unit according to claim 1 is characterized in that: A heat dissipation frame (18) is provided at the bottom of the automatic cutting device body (1), a heat dissipation fan (19) is installed on the inner wall of the heat dissipation frame (18), a circulation groove (21) is provided on the inner wall of the circulation groove (21), and a dustproof net (22) is installed on the inner wall of the circulation groove (21).

6. The automatic cut-off device for a frequency conversion cabinet for an oil pumping unit according to claim 1 is characterized in that: An air inlet groove (20) is provided on the inner wall of the automatic cutting device body (1).

7. The automatic cut-off device for a frequency conversion cabinet for an oil pumping unit according to claim 5 is characterized in that: A sealing frame (23) is installed at the bottom of the heat dissipation frame (18), a sealing pole (24) is installed on the outer wall of the sealing frame (23), a sealing connecting rod (25) is installed at the output end of the sealing pole (24), and a sealing block (26) is installed on the outer wall of the sealing connecting rod (25).

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