A substation line parameter acquisition device

Abstract

The present invention relates to a station line parameter acquisition device, which includes an installation box and an acquisition module. The installation box includes a box cover, a panel frame and a bottom frame. The acquisition module includes an interface module and a processing module. The interface module is electrically connected to the processing module. The interface module is installed in the panel frame, and the processing module is installed in the bottom frame. The processing module includes a main board module and connection terminals. The connection terminals are connected to the circuit board on the main board module, and their wiring ends are located on the installation holes opened on the panel frame. A current-expanding circuit board is welded to the circuit part on the bottom side wall of the circuit board in the processing module. A wiring part is connected to the inner side wall of the wiring end of the connection terminal. One end of the wiring part far away from the connection terminal sequentially passes through the circuit board on the main board module and the current-expanding circuit board and is electrically connected to both of them. The present invention provides a station line parameter acquisition device. The direct-welding type current connection terminal is combined with the stacked-welding type current-expanding board to meet the current-carrying requirements of the fault current and make the acquisition process more stable.

Description

Technical Field

[0001] The present invention relates to the technical field of electric energy acquisition and measurement devices, and particularly to a substation line parameter acquisition device. Background Art

[0002] Switching stations, switching substations, and ring main units are power distribution facilities in the power distribution network that receive and distribute electric power. They are power facilities that supply high-voltage electric power to surrounding power-consuming units respectively. They are not only the most basic units at the bottom layer of the power distribution network, but also one of the key links in power transmission. The above-mentioned substations have multiple incoming lines and outgoing lines. During operation, it is necessary to collect line parameters such as voltage, current, frequency, power, and electric energy of the lines in real time. The collection function is completed by installing a line parameter acquisition device. The commonly used acquisition device is designed with 8 circuits to meet the acquisition requirements of multiple lines in the substation.

[0003] The installation box in the existing substation line parameter acquisition device includes a box cover and a box body. The acquisition module includes an interface module and a processing module. The interface module is installed on the side wall of the box body, and the processing module is installed on the inner bottom side wall of the box body. Since a large current will flow through the acquisition device during a line fault, in order to meet the fault current passing requirement, the common practice is to manually add tin to the copper foil of the circuit through which the current passes on the circuit board of the acquisition module to increase the current passing capacity. The efficiency of adding tin is very low and does not meet the requirements of mass production. Therefore, a substation line parameter acquisition device is provided to solve the above problems. Summary of the Invention

[0004] The present invention provides a substation line parameter acquisition device, which combines a through-hole soldering type current terminal and a stacked soldering type current expansion board to meet the fault current passing requirement, making the acquisition process more stable. Moreover, the installation box is split into a box cover, a panel frame, and a bottom frame, and the assembly method using the convex edge and the limiting component is more convenient and fast.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A substation line parameter acquisition device includes an installation box and an acquisition module. The installation box includes a box cover, a panel frame, and a bottom frame. The acquisition module includes an interface module and a processing module. The interface module is electrically connected to the processing module. The interface module is installed in the panel frame, and the processing module is installed in the bottom frame;

[0007] The processing module includes a main board module and a connection terminal. The connection terminal is connected to the circuit board on the main board module, and its wiring terminal is located on the installation hole opened on the panel frame;

[0008] A current-boosting circuit board is soldered to the circuit part on the bottom side wall of the circuit board inside the above-mentioned processing module. A wiring part is connected to the inner side wall of the wiring terminal of the above-mentioned connection terminal. One end of the wiring part far away from the above-mentioned connection terminal sequentially passes through the circuit board on the above-mentioned main board module and the above-mentioned current-boosting circuit board and is electrically connected to both of them.

[0009] Preferably, the above-mentioned wiring part is arranged as a metal connecting piece. One end of the metal connecting piece far away from the above-mentioned connection terminal sequentially passes through the circuit board on the above-mentioned main board module and the above-mentioned current-boosting circuit board and is electrically connected to both of them;

[0010] A wiring bolt is arranged on the outer side wall of the wiring terminal of the above-mentioned connection terminal and is electrically connected to an external wire through the wiring bolt. The wiring bolt passes through the side wall of the wiring terminal of the above-mentioned connection terminal and is threadedly connected to the end part of the above-mentioned metal connecting piece to connect the external wire and the above-mentioned metal connecting piece.

[0011] Preferably, a clamping groove is arranged on the inner side wall of the wiring terminal of the above-mentioned connection terminal. The end part of the metal connecting piece far away from the circuit board on the above-mentioned main board module is arranged in a U-shaped structure and is clamped in the above-mentioned clamping groove. A threaded hole for connecting the above-mentioned wiring bolt is arranged at the end part of the metal connecting piece arranged in a U-shaped structure. A connection through hole for the wiring bolt to pass through is arranged at the bottom of the above-mentioned clamping groove.

[0012] Preferably, a first limiting component is arranged on the side wall of the end part of the above-mentioned bottom frame close to the panel frame. A second limiting component and a third limiting component are respectively arranged on the side wall of the end part of the above-mentioned box cover close to the panel frame and on the side wall of the end part of the above-mentioned box cover close to the above-mentioned bottom frame;

[0013] A first convex edge is arranged at the open end of the above-mentioned panel frame. When the above-mentioned panel frame, the above-mentioned bottom frame and the above-mentioned box cover are at the connection position, they cooperate with the above-mentioned first limiting component and the side wall of the bottom frame to limit the movement of the bottom frame relative to the panel frame in the vertical direction and the second direction and to move close to the panel frame in the first direction, and cooperate with the above-mentioned second limiting component and the side wall of the box cover to limit the movement of the box cover relative to the panel frame in the vertical direction and in the second direction;

[0014] A second convex edge is arranged at the open end of the above-mentioned bottom frame. When the above-mentioned panel frame, the above-mentioned bottom frame and the above-mentioned box cover are at the connection position, they cooperate with the above-mentioned third limiting component and the side wall of the box cover to limit the bottom frame from moving away from the panel frame in the first direction. The first direction is perpendicular to the second direction and is located in the horizontal plane;

[0015] The above-mentioned panel frame and the above-mentioned box cover are connected by fixing parts to limit the movement of the panel frame relative to the box cover in the first direction and to make the above-mentioned box cover, the above-mentioned panel frame and the above-mentioned bottom frame into a whole.

[0016] Preferably, after the above-mentioned panel frame and the above-mentioned bottom frame are connected, they are arranged in an L shape.

[0017] Preferably, the above-mentioned first limiting component includes a first stop block. The first stop block is in an inverted L shape and its lower end is connected to the inner bottom side wall of the above-mentioned bottom frame, so that a first limiting area is formed between the horizontal part of the first stop block and the bottom side wall of the above-mentioned bottom frame, and the opening of the first limiting area faces the above-mentioned panel frame;

[0018] The above-mentioned first convex edge at the lower end of the above-mentioned panel frame approaches the above-mentioned bottom frame along the first direction, so that its end is located in the above-mentioned first limiting area.

[0019] Preferably, the above-mentioned second limiting component includes a second stop block. The second stop block is in an L shape and its upper end is connected to the inner top side wall of the above-mentioned box cover, so that a second limiting area is formed between the horizontal part of the second stop block and the top side wall of the above-mentioned box cover, and the opening of the second limiting area faces the above-mentioned panel frame;

[0020] The above-mentioned third limiting component includes a third stop block. The third stop block is in an L shape and is horizontally connected to the inner side wall of the above-mentioned box cover arranged along the first direction, so that a third limiting area is formed between the horizontal part of the second stop block and the top side wall of the above-mentioned box cover, and the opening of the third limiting area faces the above-mentioned panel frame;

[0021] A notch is provided on the side wall of the above-mentioned second convex edge arranged along the first direction. The third stop block is located in the notch. The box cover approaches the above-mentioned panel frame along the first direction, so that the end of the first convex edge at the upper end of the above-mentioned panel frame is located in the above-mentioned second limiting area, and the end of the second convex edge is located in the above-mentioned third limiting area.

[0022] Preferably, the above-mentioned installation box further includes two hanging ears, and the two hanging ears are respectively installed on the side walls at both ends of the above-mentioned panel frame distributed along the second direction.

[0023] Preferably, the above-mentioned hanging ear includes a first mounting plate and a second mounting plate. The first mounting plate is provided with a mounting hole, and the second mounting plate is connected to the side wall of the above-mentioned panel frame;

[0024] The above-mentioned second mounting plate is provided with a third convex edge. The third convex edge is parallel to and spaced from the above-mentioned first convex edge. The side walls of the above-mentioned box cover that are close to the above-mentioned panel frame and arranged along the first direction are all located between the third convex edge and the above-mentioned first convex edge, and the three are connected by fixing pieces.

[0025] Preferably, first connecting plates are respectively provided on the side walls of the above-mentioned box cover and the above-mentioned bottom frame that are far away from the above-mentioned panel frame, and the first connecting plate and the second connecting plate are connected by a lead seal.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] By welding a current-boosting circuit board to the lower side wall of the circuit board of the original main board module, the copper foil thickness can be directly increased, the current diversion cross-section is thicker, the current diversion value can be directly increased, the current-carrying capacity is increased, and the ability to pass the current during a line fault is satisfied. Moreover, compared with manually adding solder to the line copper foil, the manufacturing efficiency of the main board module can be greatly improved, the manufacturing time can be saved, and thus the time cost can be saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 Overall schematic diagram of the device in the embodiment of the present invention Figure 1 ;

[0030] Figure 2 Internal schematic diagram of the device in the embodiment of the present invention;

[0031] Figure 3 Schematic diagram of the processing module in the embodiment of the present invention Figure 1 ;

[0032] Figure 4 Schematic diagram of the processing module in the embodiment of the present invention Figure 2 ;

[0033] Figure 5 Schematic diagram of the connection between the metal connecting piece and the wiring bolt in the embodiment of the present invention;

[0034] Figure 6 Overall top view of the device in the embodiment of the present invention;

[0035] Figure 7 Schematic diagram of the panel frame and the bottom frame in the embodiment of the present invention;

[0036] Figure 8 Schematic diagram of the panel frame in the embodiment of the present invention;

[0037] Figure 9 Schematic diagram of the bottom frame in the embodiment of the present invention;

[0038] Figure 10 Schematic diagram of the box cover in the embodiment of the present invention;

[0039] Figure 11 Overall schematic diagram of the device in the embodiment of the present invention Figure 2 。

[0040] Description of the reference numerals in the drawings:

[0041] 1. Lid; 2. Panel frame; 21. First convex edge; 211. First left edge; 212. First right edge; 213. First upper edge; 214. First lower edge; 3. Bottom frame; 31. Second convex edge; 311. Second left edge; 312. Second right edge; 313. Notch; 4. Interface module; 5. Processing module; 51. Main board module; 52. Terminal block; 521. Card slot; 53. Metal connecting piece; 54. Current-boosting circuit board; 55. Wiring bolt; 6. First limiting component; 61. First stop block; 7. Second limiting component; 71. Second stop block; 8. Third limiting component; 81. Third stop block; 9. Hanging ear; 91. First mounting plate; 92. Second mounting plate; 93. Third convex edge; 10. Sealing lead. Detailed implementation manners

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0043] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0045] As Figures 1 - 11As shown in the figure, an embodiment of the present invention provides a station line parameter acquisition device, which specifically includes an installation box and an acquisition module. The acquisition module is used to acquire the voltage and current parameters of the line. The installation box includes a box cover 1, a panel frame 2 and a bottom frame 3. In this embodiment, the panel frame 2 includes a panel, and side walls vertically extend around the panel to form an installation space, so that one end of the panel frame 2 is closed and one end is open. The bottom frame 3 includes a bottom plate, and side walls vertically extend around the bottom plate to form an installation space, so that one end of the bottom plate frame is closed and one end is open. Correspondingly, one end of the box cover 1 close to the bottom frame 3 and one end close to the panel frame 2 are both open; one end of the bottom frame 3 close to the box cover 1 and one end close to the panel frame 2 are both open. The acquisition module includes an interface module 4 and a processing module 5. The interface module 4 is used to connect detection and communication interfaces, which is prior art. The processing module 5 processes the acquired voltage signal and current signal. The interface module 4 is installed in the panel frame 2, and the processing module 5 is installed in the bottom frame 3. The two are connected by wires. The bottom frame 3, the panel frame 2 and the box cover 1 are connected to install the interface module 4 and the processing module 5 in the installation box to form an acquisition device.

[0046] Specifically, as Figure 3As shown, the processing module 5 includes a main board module 51 and connection terminals. The connection terminals are connected to the circuit board on the main board module 51, and their wiring terminals are located on the mounting holes opened on the panel frame 2, and are used to electrically connect the external wires to the circuit board of the main board module 51. Generally, product requirements are that it should not be damaged when working under multiple times of current in case of external line faults. However, limited by the area of the circuit board wiring, the width of the circuit copper foil cannot be very large. Even if the maximum possible line width is used to wire on both the front and back sides of the circuit board, it cannot meet the current-carrying capacity when the line fails. In the prior art, in order to increase the current-carrying capacity of the circuit board, the general method is to manually add tin on the circuit copper foil. However, this method has the problem of inconsistent tin addition uniformity and very low efficiency. Therefore, to solve the above problems, a current-expanding circuit board 54 is welded to the circuit part on the bottom side wall of the circuit board in the processing module 5. The inner side wall of the wiring terminal of the connection terminal is connected with a wiring part. One end of the wiring part far from the connection terminal sequentially passes through the circuit board on the main board module 51 and the current-expanding circuit board 54 and is electrically connected to both of them. The current can be directly conducted to the circuit board and the current-expanding circuit board 54 in the processing module 5; adding the current-expanding circuit board 54 can directly increase the copper foil thickness, and the current diversion cross-section is thicker, which can directly increase the current diversion value and increase the current-carrying capacity to meet the current-carrying capacity when the line fails. Further, the circuit copper foils on the front and back sides of the circuit board on the main board module 51 are tinned. The circuit copper foils on the front and back sides of the current-expanding circuit board 54 are exactly the same as those on the circuit board on the main board module 51 and are also tinned. In order to fix the two circuit boards, a nylon rivet is used to pass through the corresponding round holes on the two circuit boards to fix them together. Then, the circuit board on the main board module 51, the current-expanding circuit board 54, and all directly solderable electronic components including the current wiring terminal 52 are soldered by wave soldering. After completion, it is equivalent to the welding and connection of multiple layers of copper foils. Further, in order to enable the solder to pass through the current-expanding circuit board 54 to form a solder layer between the circuit board on the main board module 51 and the current-expanding circuit board 54 during wave soldering, a large number of vias are uniformly arranged on the circuit copper foil.

[0047] Specifically, as Figure 4As shown in the figure, the wiring part is set as the metal connecting piece 53. One end of the metal connecting piece 53 far away from the connecting terminal sequentially passes through the circuit board on the main board module 51 and the current-expanding circuit board 54 and is electrically connected to both of them. By using the metal connecting piece 53 to replace the wire, on the one hand, it avoids the mess caused by the wire, making the wiring neater, and can make the welding connection between the metal connecting piece 53 and the circuit board more stable, making the electrical connection between the wiring terminal 52 and the circuit board of the processing module 5 more stable; further, a wiring bolt 55 is arranged on the outer side wall of the wiring end of the connecting terminal, and is electrically connected to the external wire through the wiring bolt 55, and the wiring bolt 55 passes through the side wall of the wiring end of the connecting terminal and is threadedly connected to the end of the metal connecting piece 53 to connect the external wire and the metal connecting piece 53. This technical solution can complete the wiring between the internal wiring end of the wiring terminal 52 and the circuit board on the main board module 51 only by setting the external wiring bolt 55, saving the time for setting the wiring bolt 55 inside the wiring terminal 52 and wiring through the wiring bolt 55, and can further reduce the assembly wiring time of the entire device. Especially for the commonly used 8-loop acquisition device, one loop requires 4 wirings, thus being able to save a large amount of the screw wiring time between the wiring terminal 52 and the circuit board on the main board module 51.

[0048] Specifically, as Figure 5 shown in the figure, a clamping groove 521 is arranged on the inner side wall of the wiring end of the connecting terminal. The end of the metal connecting piece 53 far away from the circuit board on the main board module 51 is set as a U-shaped structure and is clamped in the clamping groove 521. The end of the U-shaped metal connecting piece 53 has a certain elasticity and can be conveniently inserted into the clamping groove 521 and clamped in the clamping groove 521 to form a connection relationship. Correspondingly, a threaded hole for connecting the wiring bolt 55 is arranged at the end of the metal connecting piece 53 with a U-shaped structure, and a connection through hole for the wiring bolt 55 to pass through is arranged at the bottom of the clamping groove 521. The external wiring bolt 55 is connected to the threaded hole at the end of the metal connecting piece 53 through the connection through hole, so that the metal connecting piece 53 completes the fixed wiring. Moreover, the end of the U-shaped structure of the metal connecting piece 53 is clamped into the clamping groove 521, which also positions the end of the metal connecting piece 53 and facilitates the connection of the wiring bolt 55.

[0049] Specifically, as Figures 7 - 10As shown, a first limiting component 6 is provided on the inner side wall of the end of the bottom frame 3 close to the panel frame 2, and a second limiting component 7 and a third limiting component 8 are provided on the end side wall of the box cover 1 close to the panel frame 2 and the end side wall close to the bottom frame 3, respectively. Correspondingly, a first flange 21 is extended from the side wall of the sealed open end of one end of the panel frame 2, and a second flange 31 is provided at the open end of the bottom frame 3. Specifically, when the panel frame 2, the bottom frame 3 and the box cover 1 are in the connected position, the first flange 21 of the panel frame 2 cooperates with the first limiting component 6 and the side wall of the bottom frame 3 to limit the bottom frame 3 from moving relative to the panel frame 2 in the vertical direction and the second direction and approaching the panel frame 2 in the first direction. At the same time, the first flange 21 is also restricted from moving in the vertical direction and the second direction, and the bottom frame 3 The second convex edge 31 is used in conjunction with the third limiting assembly 8 and the side wall of the box cover 1 to limit the movement of the bottom frame 3 away from the panel frame 2 along the first direction, wherein the first direction is perpendicular to the second direction and is located in the horizontal plane, and the vertical direction is perpendicular to the horizontal plane, thereby limiting the movement of the bottom frame 3 in all directions, so that the position of the bottom frame 3 is limited, and at the same time, the first convex edge 21 of the panel frame 2 is used in conjunction with the second limiting assembly 7 and the side wall of the box cover 1 to limit the movement of the box cover 1 relative to the panel frame 2 in the vertical direction and in the second direction, and finally, the panel frame 2 is connected to the box cover 1 by a fixing member to limit the movement of the panel frame 2 relative to the box cover 1 in the first direction, and at the same time limit the movement direction of the box cover 1 and the panel frame 2, thereby connecting the box cover 1, the panel frame 2 and the bottom frame 3 into a whole. In summary, firstly, the split design of the panel frame 2 and the bottom frame 3 makes the installation of the interface module 4 and the processing module 5 simpler and more convenient; secondly, when the box cover 1, the panel frame 2 and the bottom frame 3 are initially moved to the connection position, the initial position can be fixed under the cooperation of the first flange 21, the second flange 31, the first limit assembly 6, the second limit assembly 7, the third limit assembly 8 and each side wall, so that the position of the bottom frame 3 is limited, the position of the box cover 1 in the vertical direction and the position in the second direction are limited, and the position of the panel frame 2 in the vertical direction and the second direction is limited. Finally, the panel frame 2 and the box cover 1 are connected by the fixing member, so that the panel frame 2 and the box cover 1 are fixed in the first direction, and the installation box connection is completed, so that the connection of the entire box cover 1, the panel frame 2 and the bottom frame 3 can be realized by only one fixing member, the connection structure is simple, and the installation is convenient and fast. Specifically, the fixing member can be a wiring bolt. Specifically, in this embodiment, the fixing member fixes the side wall of the box cover 1 along the first direction and the first flange 21 together, thereby fixing the box cover 1 and the panel frame 2 together.

[0050] In this embodiment, the panel frame 2 is the front end of the acquisition device. Taking the panel frame 2 as a reference, the first direction is the front and rear direction of the acquisition device, and the second direction is the left and right direction of the acquisition device. For ease of description and understanding, the following description describes the first direction as the front and rear direction, and the second direction as the left and right direction.

[0051] Specifically, after the panel frame 2 and the bottom frame 3 are connected, they are arranged in an L shape. Since the interface module 4 is installed in the installation space inside the panel frame 2 and the acquisition module is installed on the installation frame inside the bottom frame 3, when disassembling and overhauling, a more open space can be formed compared to a box body with only an upper opening. The interface module 4 and the processing module 5 will be exposed and not blocked, which is convenient for debugging and maintenance.

[0052] Specifically, in this embodiment, the first limiting component 6 includes a first stop block 61. The first stop block 61 is in an inverted L shape and its lower end is connected to the inner bottom side wall of the bottom frame 3, so that a first limiting area is formed between the horizontal part of the first stop block 61 and the inner bottom side wall of the bottom frame 3, and the opening of the first limiting area faces the panel frame 2. Correspondingly, the first convex edge 21 includes a first upper edge 213, a first lower edge 214, a first left edge 211 and a first right edge 212. Move the panel frame 2 closer to the bottom frame 3 in the front-rear direction, so that the first convex edge 21 is inserted from the opening of the bottom frame 3. Finally, the end of the first lower edge 214 is located in the first limiting area, and at the same time, both the first left edge 211 and the first right edge 212 are located between the left and right side walls of the bottom frame 3. Thus, the bottom frame 3 is restricted and cannot move relative to the panel frame 2 in the left-right direction and the vertical direction, and cannot move closer to the panel frame 2 in the front-rear direction. Similarly, the panel frame 2 cannot move in the left-right direction and upward direction, which initially limits the panel frame 2 and the bottom frame 3. Specifically, a plurality of first stop blocks 61 are evenly distributed in the left-right direction, so that the first lower edge 214 can cooperate with a plurality of first limiting areas, and the limiting is more stable.

[0053] Specifically, in this embodiment, the second limiting component 7 includes a second stopper 71. The second stopper 71 is L-shaped and its upper end is connected to the inner top side wall of the box cover 1, so that a second limiting area is formed between the horizontal part of the second stopper 71 and the top side wall of the box cover 1, and the opening of the second limiting area faces the panel frame 2. Specifically, the third limiting component 8 includes a third stopper 81. The third stopper 81 is L-shaped and is horizontally connected to the inner side wall of the box cover 1 arranged along the front and back, so that a third limiting area is formed between the horizontal part of the second stopper 71 and the top side wall of the box cover 1, and the opening of the third limiting area faces the panel frame 2. At the same time, a notch 313 is provided on the second convex edge 31 arranged along the front and back, and the third stopper 81 is located in the notch 313. The box cover 1 approaches the panel frame 2 along the front and back directions, so that the first left and right edges and the first upper edge 213 of the panel frame 2 are inserted into the box cover 1 along the front opening of the box cover 1, and the upper edge is located in the second limiting area. Thus, the box cover 1 is restricted and cannot move relative to the panel frame 2 in the left and right directions and the vertical direction, and the box cover 1 cannot approach the panel frame 2 along the front and back directions. At the same time, the second convex edge 31 includes a second left edge 311, a second right edge 312 and a second rear edge. The third stopper 81 approaches the panel frame 2 along the front and back directions in the notch 313. At this time, the second convex edge 31 is located in the box cover 1, and the second left edge 311 and the second right edge 312 insert the third stopper 81 into the third limiting area. Thus, the bottom frame 3 and the box cover 1 are restricted. The bottom frame 3 cannot move away from the panel frame 2 along the front and back directions, and the bottom frame 3 is completely restricted. At the same time, under the action of the fixing member, the panel frame 2 and the box cover 1 are connected together. Specifically, the second stoppers 71 are evenly distributed in the left and right directions to form a plurality of second limiting areas. The first upper edge 213 is used in cooperation with the plurality of second limiting areas, and the limiting is more stable. Specifically, the third stoppers 81 are evenly distributed in the front and back directions and form a plurality of third limiting areas. The second front and rear edges are respectively used in cooperation with the plurality of second limiting areas, and the limiting is more stable.

[0054] In summary, the first limiting component 6, the second limiting component 7 and the third limiting component 8 all adopt L-shaped stoppers, and respectively form a first limiting area, a second limiting area and a third limiting area between the side walls of the box cover 1 and the side walls of the bottom frame 3. The first limiting area and the third limiting area are respectively used in cooperation with the first lower edge 214 and the first upper edge 213 to limit the bottom frame 3 and the box cover 1. The second left edge 311 and the second right edge 312 are both used in cooperation with the second limiting area to limit the bottom frame 3 and the box cover 1, so that the connection positions of the panel frame 2, the box cover 1 and the bottom frame 3 are initially limited and connected. Then, the box cover 1 and the panel frame 2 are connected together by two screws, and the panel frame 2, the box cover 1 and the bottom frame 3 can be stably connected into a whole. Moreover, there is no need to connect the box cover 1 and the bottom frame 3 by screws. Through structural limitation, fewer screws are used.

[0055] Specifically, the installation box further includes two hanging ears 9, which are respectively installed on the side walls of the two ends of the panel frame 2 distributed in the second direction, that is, the two hanging ears 9 are respectively connected to the left and right ends of the panel frame 2, and are used to install the entire installation box at the position where installation is required.

[0056] Specifically, as Figure 11 shown, the hanging ear 9 includes a first mounting plate 91 and a second mounting plate 92. The first mounting plate 91 is provided with mounting holes, and the second mounting plate 92 is connected to the side wall of the panel frame 2, and the two form an L-shaped structure. Specifically, the first mounting plate 91 and the second mounting plate 92 are integrally formed, and a third convex edge 93 is provided on the second mounting plate 92. The third convex edge 93 is parallel and spaced from the first convex edge 21. Specifically, in this embodiment, the third convex edge 93 on the left is spaced from the first left edge 211, and the third convex edge 93 on the right is spaced from the first right edge 212. When connecting, the side walls of the box cover 1 close to the panel frame 2 and arranged in the front-rear direction are both located between the third convex edge 93 and the first convex edge 21, and the three are connected by fixing parts, so as to fixedly connect the hanging ear 9, the box cover 1 and the panel frame 2 together. On the one hand, the connection of the hanging ear 9 is strengthened, and on the other hand, the front-end side wall of the box cover 1 is further limited, so that the box cover 1 is more stable after connection. Moreover, the left and right side walls of the bottom frame 3 close to the panel frame 2 are also inserted between the third convex edge 93 and the first convex edge 21 for further limiting connection.

[0057] Specifically, a first connecting plate and a second connecting plate are respectively provided on the side walls of the box cover 1 and the bottom frame 3 away from the panel frame 2, and the first connecting plate and the second connecting plate are connected by a lead seal 10, which is convenient for further sealing of the entire acquisition device. If someone opens the box cover 1, the lead seal 10 will be damaged, playing a preventive role.

[0058] The above embodiments are only the preferred embodiments of the present invention, and the scope of protection of the present invention cannot be limited by this. Any non-substantial changes and substitutions made by those skilled in the art on the basis of the present invention belong to the scope of protection required by the present invention.

Claims

1. A station line parameter collection device, characterized in that: It includes an installation box and a collection module, wherein the installation box includes a box cover, a panel frame and a bottom frame, the collection module includes an interface module and a processing module, the interface module is electrically connected to the processing module, the interface module is installed in the panel frame, and the processing module is installed in the bottom frame; The processing module includes a mainboard module and a connecting terminal, wherein the connecting terminal is connected to a circuit board on the mainboard module, and a wiring terminal thereof is located on a mounting hole provided on the panel frame; The circuit part of the bottom side wall of the circuit board in the processing module is welded with a current expansion circuit board by wave soldering, and a solder layer is formed between the circuit board on the main board module and the current expansion circuit board, and the inner side wall of the wiring end of the connecting terminal is connected with a wiring part, and the end of the wiring part away from the connecting terminal sequentially passes through the circuit board on the main board module and the current expansion circuit board and is electrically connected to the two; The wiring portion is configured as a metal connecting sheet, and one end of the metal connecting sheet away from the connecting terminal sequentially passes through the circuit board on the mainboard module and the current expansion circuit board and is electrically connected to the two; The outer side wall of the connection terminal is provided with a connection bolt, which is electrically connected to the external wire through the connection bolt, and the connection bolt passes through the side wall of the connection terminal and is threadedly connected to the end of the metal connection sheet to connect the external wire and the metal connection sheet; A card slot is provided on the inner side wall of the wiring end of the connecting terminal, and the end of the metal connecting piece away from the circuit board on the mainboard module is arranged in a U-shaped structure and is clamped in the card slot. The end of the metal connecting piece arranged in the U-shaped structure is provided with a threaded hole for the connection of the wiring bolt, and the bottom of the card slot is provided with a connecting through hole for the wiring bolt to pass through.

2. The collection device according to claim 1, characterized in that: The end side wall of the bottom frame close to the panel frame is provided with a first limiting assembly, and the end side wall of the box cover close to the panel frame and the end side wall close to the bottom frame are respectively provided with a second limiting assembly and a third limiting assembly; The opening end of the panel frame is provided with a first convex edge, and when the panel frame, the bottom frame and the box cover are in a connected position, the first convex edge is used in conjunction with the first limiting assembly and the side wall of the bottom frame to limit the bottom frame from moving relative to the panel frame in the vertical direction and the second direction and approaching the panel frame in the first direction, and is used in conjunction with the second limiting assembly and the side wall of the box cover to limit the box cover from moving relative to the panel frame in the vertical direction and the second direction; The opening end of the bottom frame is provided with a second convex edge, which cooperates with the third limiting assembly and the side wall of the box cover when the panel frame, the bottom frame and the box cover are in the connection position to limit the bottom frame from moving away from the panel frame along a first direction, wherein the first direction is perpendicular to the second direction and is located in a horizontal plane; The panel frame is connected to the box cover via a fixing member to limit the movement of the panel frame relative to the box cover along a first direction, and to make the box cover, the panel frame and the bottom frame form a whole.

3. The collection device according to claim 2, characterized in that: The panel frame and the bottom frame are arranged in an L shape after being connected.

4. The collection device according to claim 3, characterized in that: The first stopper assembly includes a first stopper, which is in an inverted L-shape and has a lower end connected to the inner bottom side wall of the bottom frame, so that a first stopper area is formed between the horizontal portion of the first stopper and the bottom side wall of the bottom frame, and the opening of the first stopper area faces the panel frame; The first convex edge at the lower end of the panel frame approaches the bottom frame along a first direction, so that the end of the first convex edge is located in the first limiting area.

5. The collection device according to claim 4, characterized in that: The second stopper assembly includes a second stopper, which is L-shaped and has an upper end connected to the inner top side wall of the box cover, so that a second stopper area is formed between the horizontal portion of the second stopper and the top side wall of the box cover, and the opening of the second stopper area faces the panel frame; The third stopper assembly includes a third stopper, which is L-shaped and horizontally connected to the inner side wall of the box cover arranged along the first direction, so that a third stopper area is formed between the horizontal portion of the second stopper and the top side wall of the box cover, and the opening of the third stopper area faces the panel frame; A notch is provided on the side wall arranged along the first direction inside the second convex edge, the third stopper is located in the notch, and the box cover is close to the panel frame along the first direction so that the first convex edge end portion of the upper end portion of the panel frame is located in the second limiting area, and the second convex edge end portion is located in the third limiting area.

6. The collection device according to claim 4, characterized in that: The installation box further comprises two hanging ears, which are respectively mounted on two end side walls of the panel frame distributed along the second direction.

7. The collection device according to claim 6, characterized in that: The hanging ear comprises a first mounting plate and a second mounting plate, the first mounting plate is provided with a mounting hole, and the second mounting plate is connected to the side wall of the panel frame; The second mounting plate is provided with a third flange, which is parallel to and spaced from the first flange. The side walls of the box cover close to the panel frame and arranged along the first direction are located between the third flange and the first flange, and the three are connected by fixing parts.

8. The collection device according to claim 2, characterized in that: The box cover and the bottom frame are both provided with a first connecting plate and a second connecting plate on their side walls away from the panel frame, respectively. The first connecting plate and the second connecting plate are connected by a lead seal.

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