Adjustable meter anti-short-circuit isolation device suitable for three-phase direct-in electric energy meter

Abstract

The invention relates to the technical field of electric power, in particular to an adjustable meter anti-short-circuit isolation device suitable for a three-phase direct-in type electric energy meter, which comprises a meter connecting mechanism electrically connected with the three-phase direct-in type electric energy meter, and the meter connecting mechanism can adjust the distance according to wiring terminal jacks of the three-phase direct-in type electric energy meter. And a wire connection mechanism is electrically inserted into the meter connection mechanism and is electrically connected with the cable. According to the adjustable meter short circuit prevention isolation device suitable for the three-phase direct-in electric energy meter, hot-line operation can be carried out; the device is strong in versatility, and is suitable for three-phase direct-in electric energy meters of various specifications and models.

Description

Technical Field

[0001] The invention relates to the technical field of electric power, and in particular to an adjustable meter short-circuit protection isolation device suitable for a three-phase direct-entry electric energy meter. Background Art The three-phase direct-entry watt-hour meter is a meter used to measure the power consumption in a three-phase power system. It is widely used in power consumption places such as industry, commerce and large buildings to measure the power consumption of three-phase alternating current.

[0002] The three-phase direct-entry electric energy meter does not need to be connected to the current, so the current transformer is omitted and the problem of secondary current open circuit is eliminated. This makes the three-phase direct-entry electric energy meter have higher accuracy, wider application range, and easier maintenance and repair.

[0003] At present, when installing a three-phase direct-entry electric energy meter, it is necessary to connect the three-phase incoming and outgoing lines separately. However, the conventional crimping wiring method still has the following shortcomings: 1. During the wiring process, due to the proximity of the terminals, a short circuit has occurred during live operation; 2. There are many specifications and models of three-phase direct-entry electric energy meters, and the spacing between the terminal jacks of the same phase is different. When connecting, you need to adjust the cable according to the specific spacing between the terminal jacks. Summary of the invention

[0004] In order to solve the technical problems existing in the background technology, the present invention provides an adjustable meter short-circuit protection isolation device suitable for a three-phase direct-entry electric energy meter, which can be operated under power; it has strong versatility and is suitable for three-phase direct-entry electric energy meters of various specifications and models.

[0005] The technical solution adopted by the present invention is: An adjustable meter short-circuit protection isolation device suitable for a three-phase direct-entry electric energy meter comprises a meter connection mechanism electrically connected to the three-phase direct-entry electric energy meter, wherein a wire connection mechanism is electrically plugged in the meter connection mechanism.

[0006] Furthermore, the table connection mechanism includes: An electrical connecting rod electrically plugged into a three-phase direct-entry electric energy meter terminal block has a fixed seat at one end thereof, two groups of fixed seats are symmetrically arranged, connecting plates are slidably connected on the two groups of fixed seats, and a thrust spring is sandwiched between the two groups of fixed seats.

[0007] Furthermore, the insertion end of the electrical connecting rod is provided with a round head to facilitate the insertion of the electrical connecting rod into the three-phase direct-entry electric energy meter terminal. A pressure groove is provided on the outer wall of the electrical connecting rod, and the pressure groove is arranged facing the wire crimping screw of the three-phase direct-entry electric energy meter terminal.

[0008] Furthermore, a pressing groove, an adjusting groove and a containing groove are provided on the side wall of the fixed seat; the pressing groove is provided on the outer wall of the fixed seat, and an anti-slip pattern is protruded in the pressing groove; the containing groove is provided on the inner wall of the fixed seat, and a sleeve ear for clamping a thrust spring is provided in the containing groove; the adjusting groove extends along the left and right directions on the upper and lower side walls of the fixed seat; an electrical jack is provided on the wall of the fixed seat opposite to the electrical connecting rod, and the electrical jack is electrically connected to the electrical connecting rod.

[0009] Furthermore, grooves are provided on both sides of the connecting plate, and the connecting plate is provided with adjusting sliding ears which are slidably inserted into the adjusting sliding grooves.

[0010] Furthermore, the adjusting chute is configured to be open on the outside and closed on the inside; The two groups of fixing seats are symmetrically arranged with the receiving grooves facing each other.

[0011] Furthermore, the wire connection mechanism comprises: A socket electrically connected to an electrical socket, wherein the end of the socket is provided with a bottom plate for electrically connecting to a cable, and a sheath is provided on the outer cover of the socket.

[0012] Furthermore, a guide slide groove is symmetrically arranged on the side wall of the socket, a through hole is arranged on the socket on one side of the guide slide groove, the opening of the through hole is arranged as a screw hole, a countersunk screw is screwed at the screw hole, a through groove connected to the through hole is arranged at the bottom of the guide slide groove, a sliding column is slidably arranged in the through hole, a socket is penetrated through the middle of the sliding column, a reset push spring is arranged in the through hole, the reset push spring abuts against the sliding column, an electrical plug rod is extended on the socket on the opposite side of the through hole, the electrical plug rod is electrically plugged into the electrical socket, and the side wall of the socket is arranged with a concave receiving groove, and an electrical pressure plate is arranged in the receiving groove.

[0013] Furthermore, a jack is provided at the end of the bottom plate, and the jack is used to plug in a cable, and the plugged in cable extends to the electrical pressing plate and is electrically crimped; An extension sleeve is extended and arranged at the edge of the jack.

[0014] Furthermore, guide sliding ears are symmetrically arranged on the inner wall of the sheath, and the guide sliding ears are slidably inserted in the guide sliding groove. An insertion rod is protrudingly arranged on the side wall of the lower part of the guide sliding ear, and the insertion rod passes through the through groove and is inserted in the insertion hole.

[0015] The beneficial effects of the adjustable meter short-circuit protection isolation device applicable to a three-phase direct-entry electric energy meter of the present invention are as follows: 1. Electrically connect the three-phase direct-entry electric energy meter through the meter connection mechanism, electrically connect the cable through the line connection mechanism, and realize live working through the electrical plugging of the meter connection and line connection mechanisms; 2. The spacing can be adjusted by the fixing seats on both sides of the meter connection mechanism, which is suitable for three-phase direct-entry electric energy meters of various specifications and models. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a general three-dimensional schematic diagram of an example of the present invention; Figure 2 It is an exploded stereoscopic schematic diagram of the table connection mechanism of an example of the present invention; Figure 3 It is a three-dimensional schematic diagram of a wire connection mechanism of an example of the present invention; Figure 4 It is a three-dimensional schematic diagram of a socket and a bottom plate of an example of the present invention; Figure 5 It is a three-dimensional schematic diagram of a sheath according to an example of the present invention.

[0017] In the figure: 1. Table-linked institutions, 110, electrical connecting rod, 111, round head, 112, pressure groove, 120, fixed seat, 121, pressing groove, 122, adjusting slide groove, 123, electrical jack, 124, containing groove, 125, ear, 130, connecting plate, 131, groove, 132, adjusting lug, 133, thrust spring, 2. Line connection mechanism, 21. socket, 211. guide slot, 212. through hole, 213. slot, 214. slide column, 215. socket, 216, countersunk screw, 217, reset spring, 218, electrical plug rod, 219, electrical pressure plate, 22. Bottom plate, 221. Extension sleeve, 23. a sheath, 231. a guide sliding ear, 232. an insert rod. DETAILED DESCRIPTION

[0018] In order to more clearly and specifically explain the specific implementation purpose and implementation mode of the present invention, the technical solution of the present invention will be fully described below. The described embodiments are part of the embodiments of the present invention, but not all of them. Without making creative work, all other embodiments based on the embodiments described in the present invention belong to the protection scope of the present invention.

[0019] The present invention provides an adjustable meter short-circuit protection isolation device suitable for a three-phase direct-entry electric energy meter, such as Figure 1 As shown, including: A meter connection mechanism 1 for adjusting the width according to the spacing of the connection terminal jacks of the three-phase direct-entry electric energy meter, wherein the meter connection mechanism 1 is electrically connected to the three-phase direct-entry electric energy meter, such as Figure 2 As shown, including: An electrical connecting rod 110 is electrically plugged into a three-phase direct-entry electric energy meter terminal. The insertion end of the electrical connecting rod 110 is provided with a round head 111, which is convenient for the electrical connecting rod 110 to be inserted into the three-phase direct-entry electric energy meter terminal. A pressure groove 112 is provided on the outer wall of the electrical connecting rod 110, and the pressure groove 112 is arranged facing the crimping screw of the three-phase direct-entry electric energy meter terminal; a fixed seat 120 is provided at one end of the electrical connecting rod 110, and a pressing groove 121, an adjusting slide groove 122, and a containing groove 124 are provided on the side wall of the fixed seat 120. The pressing groove 121 is arranged on the outer wall of the fixed seat 120, and an anti-slip pattern is protruded in the pressing groove 121. The containing groove 124 is arranged on the inner wall of the fixed seat 120, and an adjusting slide groove 122 and a containing groove 124 are provided in the containing groove 124. A sleeve ear 125 for engaging a thrust spring 133 is provided, and the adjusting slot 122 is extended along the left-right direction and is arranged on the upper and lower side walls of the fixing seat 120. The adjusting slot 122 is set to be open on the outside and closed on the inside. An electrical socket 123 is set on the wall of the fixing seat 120 on the opposite side of the electrical connecting rod 110, and the electrical socket 123 is electrically connected to the electrical connecting rod 110; the fixing seat 120 is symmetrically arranged in two groups, and is symmetrically arranged in a manner that the receiving grooves 124 are opposite to each other. Connecting plates 130 are slidably connected on the two groups of fixing seats 120, and grooves 131 are set on both sides of the connecting plate 130. The connecting plate 130 is provided with an adjusting sliding ear 132 slidably inserted in the adjusting slot 122; a thrust spring 133 is sandwiched between the two groups of fixing seats 120.

[0020] The meter connection mechanism 1 is electrically connected with a wire connection mechanism 2, and the wire connection mechanism 2 is electrically connected to the cable. Figure 3 , Figure 4 , Figure 5 As shown, including: The socket 21 electrically connected to the electrical socket 123 has a guide slot 211 symmetrically arranged on the side wall of the socket 21, a through hole 212 is arranged on the socket 21 on one side of the guide slot 211, the opening of the through hole 212 is arranged as a screw hole, a countersunk screw 216 is screwed on the screw hole, a through slot 213 connected to the through hole 212 is arranged at the bottom of the guide slot 211, a slide post 214 is slidably arranged in the through hole 212, a socket 215 is penetrated in the middle of the slide post 214, a reset spring 217 is arranged in the through hole 212, the reset spring 217 is abutted against the slide post 214, an electrical plug rod 218 is extended on the socket 21 on the opposite side of the through hole 212, and the electrical plug rod 218 is electrically connected to the socket 21 Connected to the electrical socket 123, the side wall of the socket 21 is provided with a concave groove, and an electrical pressure plate 219 is provided in the groove; the end of the socket 21 is provided with a base plate 22 for electrical connection with the cable, and the end of the base plate 22 is provided with a socket, and an extension sleeve 221 is extended at the edge of the socket, and the socket is used to plug the cable, and the plugged cable extends to the electrical pressure plate 219 and is electrically crimped; the socket 21 is provided with a sheath 23 on the outer shell, and guide sliding ears 231 are symmetrically provided on the inner wall of the sheath 23, and the guide sliding ears 231 are slidably inserted in the guide sliding groove 211, and a plug rod 232 is protruding on the side wall of the lower part of the guide sliding ear 231, and the plug rod 232 passes through the through groove 213 and is inserted in the socket 215.

[0021] According to the specific structure of an adjustable meter short-circuit protection isolation device suitable for a three-phase direct-entry electric energy meter in the above embodiment, the working method is further described below: S1, three-phase direct-entry energy meter connection: Press the pressing grooves 121 on both sides to bring the fixing seats 120 on both sides closer to each other until the electrical connecting rod 110 is inserted from the round head 111 end into the terminal jack of one of the three-phase terminals A, B, and C of the three-phase direct-entry electric energy meter, and tighten the wire pressing screw until the wire pressing screw abuts against the pressure groove 112 to electrically connect the electrical connecting rod 110 to the three-phase direct-entry electric energy meter.

[0022] S2. Cable connection: Remove the insulating sheath of the cable and insert it into the jack of the base plate 22, tighten the screws on the electrical pressure plate 219 to electrically connect the electrical pressure plate 219 to the cable.

[0023] S3, plug and unplug: Insert the electrical plug rod 218 into the electrical socket 123 to electrically connect the electrical plug rod 218 and the electrical socket 123; When the electrical plug rod 218 is inserted into the electrical socket 123 , the sheath 23 abuts against the fixing seat 120 at the electrical socket 123 , so that the guide sliding ear 231 slides along the guide sliding groove 211 until the sheath 23 covers the electrical pressure plate 219 of the socket 21 .

[0024] Pull out the electrical plug rod 218 from the electrical socket 123 to electrically disconnect the electrical plug rod 218 and the electrical socket 123; When the electrical plug rod 218 is pulled out of the electrical socket 123 , the return spring 217 pushes the slide post 214 , causing the guide sliding ear 231 to slide along the guide sliding groove 211 , until the electrical plug rod 218 is completely pulled out of the electrical socket 123 , and the sheath 23 returns to the state of protecting the electrical plug rod 218 .

[0025] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Through the above description, relevant staff can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the contents of the specification. All so-called equal changes and modifications of the shapes, structures, features and spirits described in the scope of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An adjustable meter short-circuit protection isolation device suitable for a three-phase direct-entry electric energy meter, characterized in that: include: A meter connection mechanism (1) electrically connected to a three-phase direct-entry electric energy meter, wherein a wire connection mechanism (2) is electrically plugged into the meter connection mechanism (1).

2. According to claim 1, an adjustable meter short-circuit protection isolation device suitable for a three-phase direct-entry electric energy meter is characterized in that: The surface connection mechanism (1) comprises: An electrical connection rod (110) electrically plugged into a connection terminal of a three-phase direct-entry electric energy meter, one end of the electrical connection rod (110) being provided with a fixing seat (120), two groups of the fixing seats (120) being symmetrically provided, a connecting plate (130) being slidably connected to the two groups of fixing seats (120), and a thrust spring (133) being sandwiched between the two groups of fixing seats (120).

3. According to claim 2, an adjustable meter short-circuit protection isolation device suitable for a three-phase direct-entry electric energy meter is characterized in that: The insertion end of the electrical connection rod (110) is provided with a round head (111) to facilitate the insertion of the electrical connection rod (110) into a three-phase direct-entry electric energy meter terminal. A pressure groove (112) is provided on the outer wall of the electrical connection rod (110), and the pressure groove (112) is arranged facing the crimping screw of the three-phase direct-entry electric energy meter terminal.

4. According to claim 3, an adjustable meter short-circuit protection isolation device suitable for a three-phase direct-entry electric energy meter is characterized in that: The side wall of the fixed seat (120) is provided with a pressing groove (121), an adjusting groove (122), and a containing groove (124); the pressing groove (121) is provided on the outer side wall of the fixed seat (120); an anti-slip groove is protruded in the pressing groove (121); the containing groove (124) is provided on the inner side wall of the fixed seat (120); a sleeve ear (125) for clamping a thrust spring (133) is provided in the containing groove (124); the adjusting groove (122) is extended in the left-right direction and provided on the upper and lower side walls of the fixed seat (120); an electrical jack (123) is provided on the wall of the fixed seat (120) opposite to the electrical connecting rod (110); the electrical jack (123) is electrically connected to the electrical connecting rod (110).

5. According to claim 4, an adjustable meter short-circuit protection isolation device suitable for a three-phase direct-entry electric energy meter is characterized in that: Grooves (131) are provided on both sides of the connection plate (130), and an adjustment sliding ear (132) is provided on the connection plate (130) and is slidably inserted into the adjustment sliding groove (122).

6. The adjustable short-circuit protection isolation device for a three-phase direct-entry electric energy meter according to claim 5 is characterized in that: The adjusting slide groove (122) is configured to be open on the outside and closed on the inside; The two groups of fixing seats (120) are symmetrically arranged with the receiving grooves (124) facing each other.

7. The adjustable short-circuit protection isolation device for a three-phase direct-entry electric energy meter according to claim 4 is characterized in that: The wire connection mechanism (2) comprises: A socket (21) electrically connected to an electrical socket (123), wherein a bottom plate (22) for electrically connecting to an electrical cable is provided at the end of the socket (21), and a sheath (23) is provided on the outer cover of the socket (21).

8. The adjustable short-circuit protection isolation device for a three-phase direct-entry electric energy meter according to claim 7 is characterized in that: The side wall of the socket (21) is symmetrically provided with a guide slot (211), the socket (21) on one side of the guide slot (211) is provided with a through hole (212), the opening of the through hole (212) is provided with a screw hole, a countersunk screw (216) is screwed to the screw hole, a through slot (213) connected to the through hole (212) is provided at the bottom of the guide slot (211), a slide column (214) is slidably provided in the through hole (212), and the slide column (214) A socket (215) is provided through the middle of the through hole (212), a reset spring (217) is provided inside the through hole (212), the reset spring (217) is in contact with the slide column (214), an electrical plug rod (218) is extended from the socket (21) on the opposite side of the through hole (212), the electrical plug rod (218) is electrically plugged into the electrical socket (123), and a concave groove is provided on the side wall of the socket (21), an electrical pressure plate (219) is provided in the groove.

9. The adjustable short-circuit protection isolation device for a three-phase direct-entry electric energy meter according to claim 8 is characterized in that: A plug hole is provided at the end of the bottom plate (22), and the plug hole is used to plug in a cable. The plugged in cable extends to the electrical pressing plate (219) and is electrically crimped. An extension sleeve (221) is extended and arranged at the edge of the insertion hole.

10. The adjustable short-circuit protection isolation device for three-phase direct-entry electric energy meters according to claim 9 is characterized in that: The inner wall of the sheath (23) is symmetrically provided with guide sliding ears (231), the guide sliding ears (231) are slidably inserted in the guide sliding groove (211), and an insertion rod (232) is protrudingly provided on the side wall of the lower part of the guide sliding ear (231), and the insertion rod (232) passes through the through groove (213) and is inserted in the insertion hole (215).

Images