Protection device for load end of electric power system

Abstract

The utility model discloses a protection device for a load end of an electric power system. The protection device comprises a shell, and a first plug and a second plug which are arranged on the shell, wherein an electric wire extends out of the second plug, and the other end of the electric wire is connected to the first plug; the shell is further provided with a driver, the driver is provided with a traction part, the electric wire is at least partially connected with the traction part, and the driver is used for driving the traction part to pull the electric wire. According to the utility model, the first plug is plugged with the load terminal of the power system, then the second plug connects the load terminal with the external power supply, and the driver and the traction part are arranged to pull the second plug connected with the external power supply. And the driver drives the traction part to pull the electric wire to realize the function of pulling out the second plug, so that further faults are effectively avoided, and the safety is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of power equipment protection devices, and in particular relates to a protection device for a load end of a power system. Background Art

[0002] In the power system, the safe operation of the load is of vital importance. When the load has abnormal conditions such as leakage, phase short circuit or short circuit to ground, these faults may not only cause damage to the equipment, but more importantly, they may pose a serious threat to the life safety of the operator. Especially at the load terminal of the power system, such as the plug, if the plug can be pulled out in time and disconnected when a fault occurs, safety can be improved. However, there is a lack of relevant devices in the prior art. Utility Model Content

[0003] In view of the above problems, the utility model discloses a protection device for the load end of an electric power system, comprising a housing, and a first plug and a second plug arranged on the housing; wherein a wire extends from the second plug, and the other end of the wire is connected to the first plug;

[0004] The housing is also provided with a driver having a traction portion, the electric wire is at least partially connected to the traction portion, and the driver is used to drive the traction portion to pull the electric wire.

[0005] In some exemplary technical solutions, the housing has a first chamber, and the inner wall of the chamber is provided with the first plug;

[0006] The outer side wall of the shell is also provided with an attached shell, and the attached shell cover is placed on the outer wall surface of the shell and forms a second chamber with the outer wall surface;

[0007] The electric wire is received in the second cavity, and the pulling portion extends into the second cavity to be at least partially connected with the electric wire.

[0008] In some exemplary technical solutions, the housing is further provided with a detector and an information processor connected by a signal, the detector being connected to the first plug and being used to obtain a digital signal of the working information of the first plug;

[0009] The information processor comprises a digital-to-analog conversion module, and the digital-to-analog conversion module is used to convert the digital signal into an analog signal.

[0010] In some exemplary technical solutions, the detector is connected to the first plug by circuit, the detector has a transmitter, and the information processor has a receiver;

[0011] The transmitter is signal connected to the receiver.

[0012] In some exemplary technical solutions, the traction part is a rod body, and the driver is used to drive the rod body to rotate;

[0013] The rod body is fixed to any section of the electric wire.

[0014] In some exemplary technical solutions, the driver is signal-connected to the detector.

[0015] In some exemplary technical solutions, at least one side of the shell has an opening, and a fixing portion extends from an edge of the opening.

[0016] In some exemplary technical solutions, an elastic member is also provided at the opening.

[0017] The beneficial effect of the utility model lies in that the first plug is plugged into the load terminal of the power system, and then the load terminal is connected to the external power supply with the second plug. The driver and the traction part are provided for pulling the second plug connected to the external power supply. When a fault is found in the device, the driver can drive the traction part to pull the wire to realize the function of pulling out the second plug, thereby effectively avoiding further faults and improving safety.

[0018] In addition, the housing may also be provided with the detector and information processor, through which the power information of the load terminal is monitored in real time and sent to the information processor for further processing. As mentioned above, the start command of the driver may come from the detector, and the opening is provided with the fixing part, which can provide a fixing basis for the device to pull out the second plug. Furthermore, the elastic member can confine the excess wires in the first chamber for easy storage.

[0019] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1A protection device for a load end of a power system according to an embodiment of the utility model is shown;

[0022] Figure 2 A protection device for a load end of a power system according to an embodiment of the utility model is shown;

[0023] Figure 3 A protection device for a load end of a power system according to an embodiment of the utility model is shown;

[0024] Figure 4 A protection device for a load end of a power system according to an embodiment of the utility model is shown.

[0025] In the attached figure:

[0026] 1-housing, 2-first plug, 3-second plug, 4-driver, 5-detector, 6-information processor, 7-traction unit;

[0027] 101-first chamber, 102-attached shell, 104-elastic member, 105-upper plate, 106-middle plate, 107-lower plate, 108-fixing part, 109-arched part;

[0028] 1021-base, 1022-cover;

[0029] 1041- buckle;

[0030] 601-receiver, 602-indicator light. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0032] First embodiment

[0033] This embodiment discloses a protection device for a load end of a power system, referring to Figure 1-4 The invention is understood to include a housing 1, and a first plug 2 and a second plug 3 provided on the housing 1; wherein a wire extends from the second plug 3, and the other end of the wire is connected to the first plug 2. A driver 4 is also provided on the housing 1, and the driver 4 has a traction part 7, and the wire is at least partially connected to the traction part 7, and the driver 4 is used to drive the traction part 7 to traction the wire.

[0034] During operation, if a fault is found, the driver 4 of the device will start immediately. Specifically, the driver 4 will drive its traction part 7, and the traction part 7 is at least partially connected to the wire. When the driver 4 is working, it will pull the wire through the traction part 7, and since the other end of the wire is connected to the second plug 3, this traction force will be transmitted to the second plug 3. As the driver 4 continues to work, the wire is gradually pulled, and this pulling force will eventually cause the second plug 3 to be pulled out of the socket. This process enables the second plug 3 to be automatically pulled out when a fault occurs in the device, thereby cutting off the fault circuit, effectively avoiding further expansion of the fault, and improving the safety and stability of the power system.

[0035] Second embodiment

[0036] Based on the above implementation, in this example, the housing 1 has a first chamber 101, and the inner wall of the chamber is provided with the first plug 2. Figure 2 As shown, the first plug 2 in this example is a three-prong plug, and the load end of the power system can be, for example, a household appliance or a tool such as an electric drill, an electric saw, a grinder, etc. In this example, the housing 1 includes an upper plate 105, an intermediate plate 106, and a lower plate 107. The upper plate 105 is provided with the second plug 3 and the driver 4, etc. The intermediate plate 106 fixes the upper plate 105 and the lower plate 107 respectively, and the upper plate 105, the intermediate plate 106, and the lower plate 107 surround and form the first chamber 101.

[0037] Continue to combine Figure 1In this example, the outer wall of the housing 1 is also provided with an attached housing 102, and the attached housing 102 is placed on the outer wall of the housing 1 and forms a second chamber with the outer wall. In this example, the attached housing 102 includes a base 1021 connected to the upper plate 105 by screws, and a cover plate 1022 buckled on the base 1021, and the cover plate 1022 is provided with a through hole toward the second plug 3, and the through hole is used to pass the wire. In this example, the wires are respectively connected to the first plug 2 and the second plug 3 to achieve power supply. The wires are stored in the second chamber, and the traction part 7 penetrates into the second chamber and is connected to at least part of the wires. In different examples, the traction part 7 can be different. For example, for the driver 4, in one example, it can be an electric motor with a transmission mechanism such as a screw rod or a gear. Such a driver 4 can generate linear traction and is suitable for precise pulling operation of the wire. When a fault occurs at the load end of the power system, the control system sends an instruction to the driver 4 to command it to start. After the driver 4 receives the instruction, the electric motor starts to work. The rotational force of the motor is converted into a linear traction force through a transmission mechanism such as a screw or gear. This traction force acts on the traction part 7 connected to the wire, which may be connected to the wire through a clip, hook or other fixing device. As the motor continues to rotate, the traction part 7 begins to pull the wire slowly and steadily. Since one end of the wire is connected to the second plug 3, this pulling force will gradually be transmitted to the second plug 3. When the pulling force reaches a certain level, the second plug 3 will be pulled out of the socket, thereby cutting off the connection with the power system. Once the second plug 3 is successfully unplugged, the control system will detect this state and stop the operation of the driver 4, completing the entire fault disconnection process.

[0038] Third embodiment

[0039] Based on the above implementation, continue to refer to Figure 1-3 It is understood that the housing 1 is also provided with a detector 5 and an information processor 6 connected by a signal, and the detector 5 is connected to the first plug 2, and is used to obtain a digital signal of the working information of the first plug 2. In this example, the detector 5 is a current and voltage detector 5, which is used to detect the voltage or current passing through.

[0040] In this example, the information processor 6 includes at least a digital-to-analog conversion module, which is used to convert the digital signal into an analog signal. As shown in the figure, the information processor 6 in this example also includes an indicator light 602, which remains on when the device is powered on. In a specific example, the information processor 6 is a microcontroller or a microprocessor. Such processors usually integrate multiple functions, including a digital-to-analog conversion module, which can convert digital signals into analog signals for subsequent signal processing or control operations.

[0041] Taking the microcontroller as an example, it can receive digital signals from the current and voltage detector 5 and convert these digital signals into analog signals through the internal digital-to-analog conversion module. These analog signals can be used to control other devices, or displayed or recorded after further circuit processing.

[0042] In addition, the microcontroller can also control the working state of the indicator light 602. When the device is powered on and working normally, the microcontroller can output a control signal to keep the indicator light 602 on to indicate that the device is powered on. When an abnormal situation is detected, the microcontroller can also control the flashing frequency or color of the indicator light 602 to prompt the user to pay attention.

[0043] In addition to the microcontroller, the information processor 6 can also be other types of processors or controllers, as long as they can meet the functional requirements of digital signal processing, analog signal conversion, and controlling the indicator light 602. For example, a high-performance processor such as an FPGA (field programmable gate array) or a DSP (digital signal processor) can be used to implement more complex information processing tasks.

[0044] In a specific example, the detector 5 is circuit-connected to the first plug 2 , the detector 5 has a transmitter, the information processor 6 has a receiver 601 , and the transmitter and the receiver 601 are signal-connected.

[0045] Fourth embodiment

[0046] Based on the above implementation, continue to refer to Figure 3-4 The structure shown in the figure is understood, the traction part 7 is a rod, the driver 4 is used to drive the rod to rotate, and the rod is fixed to any section of the wire. It is not difficult to understand that the rod, as the traction part 7, is driven to rotate by the driver 4. When the rod rotates, since it is fixed to a section of the wire, the wire will be pulled by the rod and wound around it. The principle is the principle of a wire reel, which is to store or release the wire by rotating the rod.

[0047] Specifically, when the driver 4 drives the rod body to rotate, the wire will follow the rotation of the rod body and gradually wrap around the rod body. This can effectively manage the wires and prevent the wires from being scattered or tangled.

[0048] In a specific example, the driver 4 is connected to the detector 5 by signal. During operation, when the detector 5 detects a fault, it generates a corresponding start signal and sends the signal to the driver 4. After receiving the signal, the driver 4 starts according to a preset program or instruction and starts to drive the rod body to rotate. Since the rod body is fixed to a section of the wire, when the rod body starts to rotate, the wire will be gradually wrapped around the rod body. This process will generate a pulling force, which will be transmitted to the second plug 3 through the wire. As the rod body continues to rotate and the wire continues to be wrapped, the pulling force will gradually increase. When this force reaches a certain level, it will overcome the friction between the second plug 3 and the external power socket, thereby pulling the second plug 3 out of the external power supply.

[0049] Therefore, in this example, once the detector 5 detects a fault and sends a signal to the driver 4, the driver 4 can pull the wire by rotating the rod body, and finally realize the function of pulling the second plug 3 out of the external power source. This process can effectively cut off the fault circuit and protect electrical equipment and personal safety.

[0050] Fifth embodiment

[0051] Based on the above embodiments, in this example, at least one side of the housing 1 has an opening, and a fixing portion 108 extends from the edge of the opening. Figure 1-3 As shown, the opening is used to pass the load end of the power system, such as the plug of some electrical appliances. Specifically, the area directly opposite to the first plug 2 is provided with an arched portion 109, and the arrangement of the arched portion 109 can prevent the external load end of the power system from interfering with the housing. The fixing portion 108 is a bent section extending from the edge of the housing, and the bent section has a through hole. In this example, the fixing portion 108 is provided with a bolt to provide a fixing reference, so that the second plug 3 can be pulled out when the driver 4 is working.

[0052] In some specific examples, an elastic member 104 is further provided at the opening. In this example, both ends of the elastic member 104 are fixed to the edge of the opening by buckles 1041. The elastic member 104 can restrict excess wires at the load end of the external power system within the first cavity.

[0053] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A protection device for a load end of a power system, characterized in that: It comprises a housing (1), and a first plug (2) and a second plug (3) arranged on the housing (1); wherein a wire extends from the second plug (3), and the other end of the wire is connected to the first plug (2); The housing (1) is also provided with a driver (4), the driver (4) having a traction portion (7), the electric wire being at least partially connected to the traction portion (7), and the driver (4) being used to drive the traction portion (7) to pull the electric wire.

2. The protection device for the load end of the power system according to claim 1, characterized in that: The housing (1) has a first chamber (101), and the first plug (2) is provided on the inner side wall of the first chamber (101); The outer side wall of the shell (1) is also provided with an auxiliary shell (102), and the auxiliary shell (102) is placed on the outer wall surface of the shell (1) and forms a second chamber with the outer wall surface; The electric wire is received in the second cavity, and the pulling portion (7) extends into the second cavity and is at least partially connected to the electric wire.

3. The protection device for the load end of the power system according to claim 1 or 2, characterized in that: The housing (1) is further provided with a detector (5) and an information processor (6) connected via a signal, wherein the detector (5) is connected to the first plug (2) and is used to obtain a digital signal of working information of the first plug (2); The information processor (6) comprises a digital-to-analog conversion module, and the digital-to-analog conversion module is used to convert the digital signal into an analog signal.

4. The protection device for the load end of the power system according to claim 3, characterized in that: The detector (5) is connected to the first plug (2) by circuit, the detector (5) has a transmitter, and the information processor (6) has a receiver; The transmitter is signal connected to the receiver.

5. The protection device for the load end of the power system according to claim 3, characterized in that: The traction part (7) is a rod body, and the rod body is fixed to any section of the electric wire.

6. The protection device for the load end of the power system according to claim 5, characterized in that: The driver (4) and the detector (5) are signal connected.

7. The protection device for the load end of the power system according to claim 1 or 2, characterized in that: At least one side of the shell (1) has an opening, and a fixing portion (108) extends from the edge of the opening.

8. The protection device for the load end of the power system according to claim 7, characterized in that: An elastic member (104) is also provided at the opening.

Images