Quick connection device and method for direct access type direct current electric energy meter

Abstract

The invention belongs to the technical field of direct-current electric energy meter metering detection, and discloses a quick connecting device for a direct-access type direct-current electric energy meter, which comprises a base, a moving mechanism and two groups of crimping mechanisms, the moving mechanism is fixedly mounted on the base, the two groups of crimping mechanisms are fixedly mounted on the moving mechanism, the direct-current electric energy meter is placed on the crimping mechanisms, and the crimping mechanisms are fixedly mounted on the base. The distance between the current copper bars between the two groups of crimping mechanisms is moved through the moving mechanism, and after the current copper bars at the two ends of the direct-current electric energy meter are aligned with the current copper bars, the crimping mechanisms press down to perform crimping connection on the current copper bars at the two ends of the direct-current electric energy meter. The direct-current electric energy meter is placed on the current connection tool of the quick connection device, and after one-key starting electric crimping and close contact of the current end, the voltage, the auxiliary power supply and the pulse line of the quick connection device are connected with the corresponding wiring points of the direct-current electric energy meter, so that the complexity of fixing by using bolts and nuts is avoided, and the wiring time is greatly saved.

Description

Technical Field

[0001] The present invention belongs to the technical field of measurement and detection of direct current electric energy meters, and in particular relates to a quick connection device and method for a direct access type direct current electric energy meter. Background Art

[0002] Direct access DC energy meter is mainly composed of manganese copper shunt and DC energy meter, and the common structures are split type and integrated type. Split direct access DC energy measurement system refers to the indirect access DC energy meter and the matching external manganese copper shunt. The integrated direct access DC energy meter refers to the manganese copper shunt built into the DC energy meter to form an integrated DC energy meter. Figure 1 As shown, the DC energy meter has current copper bars at both ends for establishing a current test loop with the DC energy meter inspection device.

[0003] Regardless of the appearance and structure of the direct-access DC energy meter, when testing its wiring, due to the high voltage and high current (maximum voltage 1500V, maximum current 1000A) test requirements of the direct-access DC energy meter, it is necessary to use 250mm² tinned copper braided current wire and 8mm large-diameter bolts to fix it in the current test loop. When fixing, it is often necessary to use two wrenches to tighten one by one, which is not convenient and fast enough, and affects the efficiency of the test. Summary of the invention

[0004] The object of the present invention is to provide a quick connection device and method for a direct access DC electric energy meter to solve the above-mentioned technical problems.

[0005] In order to solve the above technical problems, the specific technical solutions of a quick connection device and method for a direct access DC electric energy meter of the present invention are as follows: A quick connection device for a direct access DC electric energy meter comprises a base, a moving mechanism and a crimping mechanism, wherein the moving mechanism is fixedly mounted on the base, two groups of crimping mechanisms are fixedly mounted on the moving mechanism, the DC electric energy meter is placed on the crimping mechanism, the distance between the current copper bars between the two groups of crimping mechanisms is moved by the moving mechanism, and after the current copper bars at both ends of the DC electric energy meter are aligned with the crimping mechanisms, the crimping mechanisms are pressed down to crimp the current copper bars at both ends of the DC electric energy meter.

[0006] Furthermore, it comprises an optical pulse sampler, which is fixed on the base and used for collecting optical pulse signals of the DC electric energy meter.

[0007] Furthermore, the surface of the base has a power interface and a switch, multiple interfaces and buttons, and the interior of the base has a connecting circuit and a built-in auxiliary power supply. The power interface and the switch, the built-in auxiliary power supply, multiple interfaces and buttons are connected through an internal circuit.

[0008] Furthermore, the power interface and the switch are connected to 220V AC power, and the on and off are controlled by the switch to supply power to the crimping mechanism; the power interface and the switch are connected to a built-in auxiliary power supply, and the built-in auxiliary power supply is used to supply power to the working power supply of the Class A DC power meter. The built-in auxiliary power supply includes an AC220V built-in auxiliary power supply, a DC12V built-in auxiliary power supply and a DC24V built-in auxiliary power supply. The power input by the power interface and the switch is converted into a DC24V working power supply voltage through the drive circuit of the crimping mechanism, one way is output as a safe AC220V built-in auxiliary power supply through an isolation transformer, and another way provides power supply for the DC12V built-in auxiliary power supply and the DC24V built-in auxiliary power supply.

[0009] Furthermore, the interface includes: AC220V built-in auxiliary power supply interface positive pole, AC220V built-in auxiliary power supply interface negative pole, DC12V built-in auxiliary power supply interface positive pole, DC24V built-in auxiliary power supply interface positive pole, DC12V / 24V built-in auxiliary power supply interface negative pole, voltage input interface positive pole, voltage input interface negative pole, voltage output interface positive pole, voltage output interface negative pole, electric energy meter inspection device auxiliary power supply input and output interface positive pole, electric energy meter inspection device auxiliary power supply input and output interface negative pole and electric pulse input interface, electric pulse output interface.

[0010] Furthermore, the buttons include an ascending button and a descending button, the ascending button is used to control the crimping mechanism to ascend, and the descending button is used to control the crimping mechanism to descend.

[0011] Furthermore, the moving mechanism includes guide rails, sliders, and locking knobs. The two guide rails are fixedly installed in parallel in the middle of the base. The two groups of sliders are slidably set on the guide rails. The locking knobs are installed at the left and right ends of the guide rails. When the slider slides to the applicable position, the locking knob is rotated to fix the slider to prevent the slider from sliding out of the base; the two groups of crimping mechanisms are respectively fixedly installed on the two groups of sliders.

[0012] Furthermore, the crimping mechanism includes a crimping base, a copper busbar fixing plate, a current copper busbar, a current wiring terminal, a fixed bracket and an electric push rod. The crimping base is fixedly installed above the slider, the fixed bracket and the copper busbar fixing plate are fixedly installed on the crimping base, the current copper busbar is fixedly installed on the copper busbar fixing plate, the electric push rod is fixed on the fixed bracket and aligned with the current copper busbar from below, the current wiring terminal is fixed to one end of the current copper busbar, and the electric push rod is connected to the button through the circuit inside the base, and the lifting and lowering is controlled by the button.

[0013] Furthermore, a groove is opened in the middle of the copper busbar fixing plate for installing the current copper busbar. One end of the current copper busbar is flush with the inner side of the copper busbar fixing plate to facilitate connection to the current terminal of the electric energy meter, and the other end extends outward for installing the current terminal. The current terminal adopts a large current terminal post and can be fixed with a rotatable terminal button. The current terminal is used to connect the large current line between the crimping mechanism and the DC electric energy meter inspection device; a polyurethane plate is installed at the lower end of the electric push rod.

[0014] The present invention also discloses a quick connection method for a quick connection device of a direct access type DC electric energy meter, comprising the following steps: Step 1: Connect the DC energy meter test device to the quick connection device; Step 1.1: Connect the current output terminal of the DC energy meter test device to the current connection terminal of the crimping mechanism through a wire, and rotate and press the current connection terminal to quickly connect the current output terminal of the DC energy meter test device to the quick connection device; Step 1.2: Connect the voltage output terminal of the DC energy meter inspection device to the positive pole of the voltage input interface and the negative pole of the voltage input interface of the quick connection device through wires; Step 1.3: Connect the pulse input terminal of the DC energy meter testing device to the electric pulse output interface of the quick connection device through wires; Step 2: Connect the DC energy meter to the quick-connect device; Step 2.1: Place the DC energy meter on the crimping mechanism, press the down button to start the electric crimping, and the copper bars at both ends of the DC energy meter are in close contact with the current copper bars of the crimping mechanism; Step 2.2: Connect the positive pole of the voltage output interface and the negative pole of the voltage output interface of the quick connection device to the voltage sampling terminal of the DC energy meter through wires; Step 2.3: Connect the auxiliary power output interface of the quick-connect device to the auxiliary power input terminal of the DC energy meter through wires; Step 2.4: Connect the electric pulse input interface of the quick-connect device to the electric pulse output terminal of the DC energy meter through wires.

[0015] A quick connection device and method for a direct-access DC electric energy meter of the present invention has the following advantages: the current, voltage, auxiliary power supply output terminals and pulse input terminals of a DC electric energy meter inspection device are respectively electrically connected to the current, voltage, auxiliary power supply input terminals and pulse output terminals of the quick connection device of the present invention through wires, and subsequent DC electric energy meter test wiring no longer needs to be connected to the DC electric energy meter inspection device. Instead, the DC electric energy meter is placed on the current connection tooling of the quick connection device, and the electric crimping is started with one button. After the current ends are in close contact, the voltage, auxiliary power supply and pulse lines of the quick connection device are connected to the corresponding wiring points of the DC electric energy meter, avoiding the tediousness of fixing with bolts and nuts, and greatly saving wiring time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of a DC electric energy meter; Figure 2 It is a schematic diagram of the front structure of the quick connection device of the present invention; Figure 3 It is a schematic diagram of the back structure of the quick connection device of the present invention; Figure 4 It is a schematic diagram of the connection between the DC electric energy meter detection device, the DC electric energy meter and the quick connection device of the present invention; Markings in the figure: 1. Base; 11. Power interface and switch; 121. AC220V built-in auxiliary power interface positive pole; 122. AC220V built-in auxiliary power interface negative pole; 131. DC12V built-in auxiliary power interface positive pole; 132. DC24V built-in auxiliary power interface positive pole; 133. DC12V / 24V built-in auxiliary power interface negative pole; 141. Voltage input interface positive pole; 142. Voltage input interface negative pole; 151. Voltage output interface positive pole; 152. Voltage output interface negative pole; 161. Auxiliary power input and output of electric energy meter inspection device Interface positive pole; 162, negative pole of auxiliary power input and output interface of electric energy meter inspection device; 171, electric pulse input interface; 172, electric pulse output interface; 181, up button; 182, down button; 2, moving mechanism; 21, guide rail; 211, metal cylindrical bar; 22, slider; 221, rotating cylinder; 23, locking knob; 3, crimping mechanism; 31, crimping base; 32, copper busbar fixing plate; 321, groove; 33, current copper busbar; 34, current terminal; 35, fixing bracket; 36, electric push rod; 361, polyurethane board; 4, optical pulse sampler. DETAILED DESCRIPTION

[0017] In order to better understand the purpose, structure and function of the present invention, the following is a further detailed description of a quick connection device and method for a direct access DC electric energy meter of the present invention in conjunction with the accompanying drawings.

[0018] like Figure 2 Figure 3 As shown, a quick connection device for a direct access DC energy meter of the present invention comprises a base 1, a moving mechanism 2, a crimping mechanism 3, and an optical pulse sampler 4. The moving mechanism 2 is fixedly mounted on the base 1, and two groups of crimping mechanisms 3 are fixedly mounted on the moving mechanism 2. The DC energy meter is placed on the crimping mechanism 3, and the distance between the current copper bars between the two groups of crimping mechanisms 3 is moved by the moving mechanism 2. After the current copper bars at both ends of the DC energy meter are aligned with the crimping mechanism 3, the crimping mechanism 3 is pressed down to crimp and connect the current copper bars at both ends of the DC energy meter. The optical pulse sampler 4 is fixed on the base 1 and is used to collect optical pulse signals of the DC energy meter.

[0019] The surface of the base 1 has a power interface and a switch 11, multiple interfaces and buttons. The base 1 has a connecting circuit and a built-in auxiliary power supply inside. The power interface and the switch 11, the built-in auxiliary power supply, multiple interfaces and buttons are connected through the internal circuit.

[0020] The power interface and switch 11 are connected to the 220V mains power supply, and the on / off control is performed by the switch to supply power to the crimping mechanism 3; the power interface and switch 11 are connected to the built-in auxiliary power supply, and the built-in auxiliary power supply is mainly used to supply power to the working power supply of the Class A DC power meter. Common auxiliary power supplies are mainly DC12V, 24V and AC220V. The built-in auxiliary power supply in the present invention includes an AC220V built-in auxiliary power supply, a DC12V built-in auxiliary power supply and a DC24V built-in auxiliary power supply. In addition, the working power supply of the Class A DC power meter can also be provided by the auxiliary power supply output interface of the DC power meter inspection device. The power input by the power interface and switch 11 is converted into a DC24V working power supply voltage through the drive circuit of the crimping mechanism 3, outputs a safe AC220V built-in auxiliary power supply through an isolation transformer, and provides power supply for the DC12V built-in auxiliary power supply and the DC24V built-in auxiliary power supply.

[0021] Multiple interfaces include: AC220V built-in auxiliary power supply interface positive pole 121, AC220V built-in auxiliary power supply interface negative pole 122, DC12V built-in auxiliary power supply interface positive pole 131, DC24V built-in auxiliary power supply interface positive pole 132, DC12V / 24V built-in auxiliary power supply interface negative pole 133, voltage input interface positive pole 141, voltage input interface negative pole 142, voltage output interface positive pole 151, voltage output interface negative pole 152, electric energy meter inspection device auxiliary power supply input and output interface positive pole 161, electric energy meter inspection device auxiliary power supply input and output interface negative pole 162, electric pulse input interface 171, electric pulse output interface 172.

[0022] The AC220V built-in auxiliary power supply interface positive electrode 121 and the AC220V built-in auxiliary power supply interface negative electrode 122 are connected to the AC220V built-in auxiliary power supply and are used to connect to the power input terminal of the 220V DC electric energy meter.

[0023] The DC12V built-in auxiliary power supply interface positive pole 131, the DC24V built-in auxiliary power supply interface positive pole 132, and the DC12V / 24V built-in auxiliary power supply interface negative pole 133 are connected to the DC12V / 24V built-in auxiliary power supply, and are used to connect the power input terminal of the DC12V / 24V direct current energy meter.

[0024] The positive pole 141 of the voltage input interface, the negative pole 142 of the voltage input interface, and the positive pole 151 of the voltage output interface, the negative pole 152 of the voltage output interface are directly connected through the wires inside the base 1. The positive pole 141 of the voltage input interface, the negative pole 142 of the voltage input interface are used to connect the voltage output terminal of the DC electric energy meter inspection device, and the positive pole 151 of the voltage output interface, the negative pole 152 of the voltage output interface are used to connect the voltage sampling terminal of the DC electric energy meter. The positive pole 141 of the voltage input interface, the negative pole 142 of the voltage input interface are assembled at the rear end of the crimping mechanism 3, which is convenient for connecting with the voltage output terminal of the DC electric energy meter inspection device, and the positive pole 151 of the voltage output interface, the negative pole 152 of the voltage output interface are assembled at the front end of the crimping mechanism 3, which is convenient for connecting with the voltage sampling terminal of the DC electric energy meter.

[0025] The positive pole 161 of the auxiliary power input and output interface of the electric energy meter testing device and the negative pole 162 of the auxiliary power input and output interface of the electric energy meter testing device are used to connect the auxiliary power output terminal of the electric energy meter testing device.

[0026] The electric pulse input interface 171 and the electric pulse output interface 172 are used to collect the electric pulse signal of the DC electric energy meter and transmit the signal to the DC electric energy meter inspection device for electric energy metering error calculation. The electric pulse input interface 171 and the electric pulse output interface 172 are both 5-core interfaces, and the two are directly connected through 5 signal lines inside the base 1. The electric pulse input interface 171 is used to connect the electric pulse output terminal of the DC electric energy meter, and the electric pulse output interface 172 is used to connect the electric pulse input terminal of the DC electric energy meter inspection device. The electric pulse output interface 172 is assembled at the rear end of the crimping mechanism 3, which is convenient for connecting with the electric pulse output terminal of the DC electric energy meter inspection device. In addition, the electric pulse output interface 172 is also connected in parallel with the optical pulse sampler 4, and a 5V power supply is provided for the optical pulse sampler 4. The optical pulse sampler 4 adopts a flexible fixing method, which can be applied to the optical pulse sampling of the DC electric energy meter without electric pulse output. The electric pulse input interface 171 is assembled at the front end of the crimping mechanism 3, which is convenient for connecting with the electric pulse output terminal of the DC electric energy meter.

[0027] The buttons include an ascending button 181 and a descending button 182 . The ascending button 181 is used to control the crimping mechanism 3 to ascend, and the descending button 182 is used to control the crimping mechanism 3 to descend.

[0028] The moving mechanism 2 includes a guide rail 21, a slider 22, and a locking knob 23. The two guide rails 21 are fixedly installed in parallel in the middle of the base 1. The distance between the two parallel guide rails 21 is 12 cm. The two sets of sliders 22 are slidably arranged on the guide rails 21. The sliders 22 fit in the guide rails 2 in an embedded manner and can slide back and forth along the guide rails 21. A plurality of rotating cylinders 221 are installed at the bottom of the slider 22 to facilitate the movement of the slider 22. By easily moving the two sets of crimping mechanisms 3, it can be applied to the crimping of current terminals of direct-access DC energy meters of different models and sizes. The locking knob 23 is installed at the left and right ends of the guide rail 21. When the slider 22 slides to the applicable position, the locking knob is rotated to fix the slider 22 to prevent the slider 22 from sliding out of the base. The interior of the guide rail 21 is hollowed out into a concave shape and two metal cylindrical strips 211 are embedded on both sides of the inner side to reduce the friction of the slider 22. The two sets of crimping mechanisms 3 are fixedly installed on the two sets of sliders 22 respectively.

[0029] The crimping mechanism 3 includes two groups, including a crimping base 31, a copper bar fixing plate 32, a current copper bar 33, a current terminal 34, a fixed bracket 35, and an electric push rod 36. The crimping base 31 is fixedly installed above the slider 22. The crimping base 31 is an aluminum alloy plate. The fixed bracket 35 and the copper bar fixing plate 32 are fixedly installed on the crimping base 31. The current copper bar 33 is fixedly installed on the copper bar fixing plate 32. The electric push rod 36 is fixed on the fixed bracket 35, and the current copper bar 33 is aligned below. The current terminal 34 is fixed at one end of the current copper bar 33. The electric push rod 36 is connected to the button through the circuit inside the base 1, and the lifting and lowering are controlled by the button. The rising button 181 and the falling button 182 control the rising and falling of the electric push rod 36 of the crimping mechanism 3 to easily disconnect and tightly connect the current sampling copper bar of the DC electric energy meter and the current output copper bar of the crimping mechanism 3. The drive of the electric push rod 36 can be an existing structure such as a motor screw, which will not be repeated here.

[0030] The copper bar fixing plate 32 is preferably a resin plate, which has good insulation performance, high temperature resistance, high strength and a thickness of 5 cm, which is convenient for installing the current copper bar 33. A groove 321 is opened in the middle of the copper bar fixing plate 32, and the current copper bar 33 with a thickness of 0.7 cm, a width of 5 cm and a length of 23 cm can be installed. One end of the current copper bar 33 is flush with the inner side of the copper bar fixing plate 32 for easy connection to the current end of the electric energy meter, and the other end extends outward for installation of the current terminal 34. The current terminal 34 adopts a 1000A large current terminal, which can be fixed by rotating the terminal knob, and does not need to use tools such as wrenches to connect the large current line. The current terminal 34 is used for the large current line connection between the crimping mechanism 3 and the DC electric energy meter inspection device.

[0031] The fixed bracket 35 is trapezoidal, which can effectively support the rise and fall of the electric push rod 36, and the material is also aluminum alloy. The electric push rod 36 can generate a pressure of 2200N, and the stroke speed is 7mm / s. It is safe and reliable to run. A polyurethane plate 361 is installed at the lower end of the electric push rod 36. It has the characteristics of high temperature resistance and sufficient elasticity, which can effectively and tightly fit the current terminal of the DC power meter with the current copper bus 33 of the crimping mechanism 3. After the test is completed, the polyurethane plate 361 is not easy to deform.

[0032] like Figure 4 As shown, the quick connection method for a direct access DC electric energy meter of the present invention comprises the following steps: Step 1: Connect the DC energy meter test device to the quick connection device; Step 1.1: Connect the current output terminal of the DC energy meter inspection device to the current connection terminal 34 of the crimping mechanism 3 through a wire, and rotate and press the current connection terminal 34 to quickly connect the current output terminal of the DC energy meter inspection device to the quick connection device of the present invention; Step 1.2: Connect the voltage output terminal of the DC energy meter inspection device to the positive electrode 141 and the negative electrode 142 of the voltage input interface of the quick connection device through wires; Step 1.3: Connect the auxiliary power output terminal of the DC power meter inspection device to the positive pole 161 and the negative pole 162 of the auxiliary power input and output interface of the power meter inspection device of the quick connection device through wires; this step can also be omitted, and the built-in auxiliary power supply of the quick connection device can be used to power the power meter.

[0033] Step 1.4: Connect the pulse input terminal of the DC energy meter testing device to the electrical pulse output interface 172 of the quick connection device through electric wires.

[0034] Step 2: Connect the DC energy meter to the quick-connect fittings.

[0035] Step 2.1: Place the DC energy meter on the crimping mechanism 3, press the down button 182 to start the electric crimping, and the copper bars at both ends of the DC energy meter are in close contact with the current copper bars 33 of the crimping mechanism 3; Step 2.2: Connect the positive electrode 151 and the negative electrode 152 of the voltage output interface of the quick connection device to the voltage sampling terminal of the DC energy meter through wires; Step 2.3: Connect the auxiliary power output interface of the quick-connect device (depending on the model of the DC energy meter, select the positive pole 121 of the AC220V built-in auxiliary power interface, the negative pole 122 of the AC220V built-in auxiliary power interface, or the positive pole 131 of the DC12V built-in auxiliary power interface, the negative pole 133 of the DC12V / 24V built-in auxiliary power interface, or the positive pole 131 of the DC24V built-in auxiliary power interface, the negative pole 133 of the DC12V / 24V built-in auxiliary power interface) to the auxiliary power input terminal of the DC energy meter through a wire; If the connection method according to step 1.3 is used, the positive pole 161 of the auxiliary power input and output interface of the electric energy meter inspection device and the negative pole 162 of the auxiliary power input and output interface of the electric energy meter inspection device are connected to the auxiliary power input terminal of the DC electric energy meter through wires; Step 2.4: Connect the electric pulse input interface 171 of the quick connection device to the electric pulse output terminal of the DC electric energy meter through electric wires.

[0036] After the connection is completed, the subsequent DC energy meter test wiring no longer needs to be connected to the DC energy meter inspection device, which avoids the tediousness of fixing with bolts and nuts and saves wiring time.

[0037] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A quick connection device for a direct access DC electric energy meter, comprising a base (1), a moving mechanism (2) and a crimping mechanism (3), wherein the moving mechanism (2) is fixedly mounted on the base (1), and characterized in that: Two sets of crimping mechanisms (3) are fixedly mounted on the moving mechanism (2), and a DC electric energy meter is placed on the crimping mechanism (3). The distance between the current copper bars (33) between the two sets of crimping mechanisms (3) is moved by the moving mechanism (2), and after the current copper bars (33) at both ends of the DC electric energy meter are aligned with the crimping mechanism (3), the crimping mechanism (3) is pressed down to crimp and connect the current copper bars (33) at both ends of the DC electric energy meter.

2. The quick connection device for direct access DC electric energy meter according to claim 1, characterized in that: It comprises an optical pulse sampler (4), which is fixed on a base (1) and is used to collect optical pulse signals of a direct current electric energy meter.

3. The quick connection device for direct access DC electric energy meter according to claim 1, characterized in that: The base (1) has a power interface and a switch (11), a plurality of interfaces and buttons on its surface, and the base (1) has a connection circuit and a built-in auxiliary power supply inside, and the power interface and the switch (11), the built-in auxiliary power supply, the plurality of interfaces and buttons are connected via an internal circuit.

4. The quick connection device for direct access DC electric energy meter according to claim 3, characterized in that: The power interface and the switch (11) are connected to a 220V mains power supply and are controlled to be on and off by the switch, so as to supply power to the crimping mechanism (3); the power interface and the switch (11) are connected to a built-in auxiliary power supply, and the built-in auxiliary power supply is used to supply power to the working power supply of the Class A DC electric energy meter. The built-in auxiliary power supply includes an AC220V built-in auxiliary power supply, a DC12V built-in auxiliary power supply and a DC24V built-in auxiliary power supply. One path of the power input by the power interface and the switch (11) is converted into a DC24V working power supply voltage through the drive circuit of the crimping mechanism (3), one path is output as a safe AC220V built-in auxiliary power supply through an isolation transformer, and another path provides power supply for the DC12V built-in auxiliary power supply and the DC24V built-in auxiliary power supply.

5. The quick connection device for direct access DC electric energy meter according to claim 3, characterized in that: The interface comprises: an AC220V built-in auxiliary power interface positive pole (121), an AC220V built-in auxiliary power interface negative pole (122), a DC12V built-in auxiliary power interface positive pole (131), a DC24V built-in auxiliary power interface positive pole (132), a DC12V / 24V built-in auxiliary power interface negative pole (133), a voltage input interface positive pole (141), a voltage input interface negative pole (142), a voltage output interface positive pole (151), a voltage output interface negative pole (152), an electric energy meter inspection device auxiliary power input and output interface positive pole (161), an electric energy meter inspection device auxiliary power input and output interface negative pole (162), and an electric pulse input interface (171), an electric pulse output interface (172).

6. The quick connection device for direct access DC electric energy meter according to claim 3, characterized in that: The buttons comprise an ascending button (181) and a descending button (182); the ascending button (181) is used to control the crimping mechanism (3) to ascend, and the descending button (182) is used to control the crimping mechanism (3) to descend.

7. The quick connection device for direct access DC electric energy meter according to claim 1, characterized in that: The moving mechanism (2) comprises a guide rail (21), a slider (22), and a locking knob (23); the two guide rails (21) are fixedly mounted in parallel in the middle of the base (1); the two groups of sliders (22) are slidably mounted on the guide rails (21); the locking knobs (23) are mounted on the left and right ends of the guide rails (21); when the sliders (22) slide to a suitable position, the locking knobs (23) are rotated to fix the sliders (22) to prevent the sliders (22) from sliding out of the base (1); and the two groups of crimping mechanisms (3) are fixedly mounted on the two groups of sliders (22), respectively.

8. The quick connection device for direct access DC electric energy meter according to claim 3, characterized in that: The crimping mechanism (3) comprises a crimping base (31), a copper bar fixing plate (32), a current copper bar (33), a current wiring terminal (34), a fixing bracket (35) and an electric push rod (36); the crimping base (31) is fixedly mounted above the slider (22); the fixing bracket (35) and the copper bar fixing plate (32) are fixedly mounted on the crimping base (31); the current copper bar (33) is fixedly mounted on the copper bar fixing plate (32); the electric push rod (36) is fixed on the fixing bracket (35) with its lower side aligned with the current copper bar (33); the current wiring terminal (34) is fixed to one end of the current copper bar (33); and the electric push rod (36) is connected to a button via a circuit inside the base (1) and is controlled to rise and fall by the button.

9. The quick connection device for direct access DC electric energy meter according to claim 8, characterized in that: A groove (321) is formed in the middle of the copper bar fixing plate (32) for mounting the current copper bar (33). One end of the current copper bar (33) is flush with the inner side of the copper bar fixing plate (32) for connection to the current terminal of the electric energy meter, and the other end extends outward for mounting the current terminal (34). The current terminal (34) adopts a large current terminal post and can be fixed with a rotatable terminal button. The current terminal (34) is used for connecting the large current line between the crimping mechanism (3) and the DC electric energy meter inspection device. A polyurethane plate (361) is mounted at the lower end of the electric push rod (36).

10. A quick connection method for a quick connection device for a direct access DC electric energy meter according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: Connect the DC energy meter test device to the quick connection device; Step 1.1: Connect the current output terminal of the DC energy meter inspection device to the current connection terminal (34) of the crimping mechanism (3) through an electric wire, and rotate and press the current connection terminal (34) to quickly connect the current output terminal of the DC energy meter inspection device to the quick connection device; Step 1.2: Connect the voltage output terminal of the DC energy meter inspection device to the positive pole (141) and the negative pole (142) of the voltage input interface of the quick connection device through electric wires; Step 1.3: Connect the pulse input terminal of the DC energy meter testing device to the electric pulse output interface (172) of the quick connection device through an electric wire; Step 2: Connect the DC energy meter to the quick-connect device; Step 2.1: Place the DC energy meter on the crimping mechanism (3), press the descending button (182) to start the electric crimping, and the copper bars at both ends of the DC energy meter are in close contact with the current copper bars (33) of the crimping mechanism (3); Step 2.2: Connect the positive electrode (151) and the negative electrode (152) of the voltage output interface of the quick connection device to the voltage sampling terminal of the DC electric energy meter through wires; Step 2.3: Connect the auxiliary power output interface of the quick-connect device to the auxiliary power input terminal of the DC energy meter through wires; Step 2.4: Connect the electric pulse input interface (171) of the quick connection device to the electric pulse output terminal of the DC electric energy meter through electric wires.

Images