Bus-type integrated intelligent electric energy metering box

Abstract

The invention relates to the technical field of electric energy metering boxes, and discloses a bus-type integrated intelligent electric energy metering box, which comprises a box body, an electronic element and a mounting panel, and is characterized in that the mounting panel comprises a bottom plate, a cover plate and a partition plate, the partition plate is mounted between the bottom plate and the cover plate, and the bottom plate is fixedly connected with the box body; a fixing assembly is connected between the bottom plate and the cover plate and comprises a fixing rod and a fixing block, the fixing rod is installed on the bottom plate and penetrates through the partition plate, an inserting groove is formed in the rod wall of the fixing rod, and a driving assembly used for driving the fixing block to be inserted into or leave the inserting groove is installed on the cover plate; positioning blocks are installed on the inner walls of the wire grooves, radiating pipes are installed on the bottom plate and the partition plates, media flow in the radiating pipes, each fixing rod is of an internal hollow structure, one fixing rod is communicated with one positioning block of the bottom plate and one positioning block of the partition plate at the same time, and the positioning blocks are communicated with a medium source through the fixing rods. The integrated intelligent electric energy metering box is compact in structure, convenient to install, efficient in heat dissipation, safe and stable.

Description

Technical Field

[0001] The present application relates to the technical field of electric energy meter boxes, and in particular to a busbar-type integrated intelligent electric energy meter box. Background Art

[0002] As an important part of the smart grid, the smart electricity meter box integrates high-precision electricity metering modules, remote communication technology and intelligent analysis systems to achieve the measurement and real-time transmission of electricity.

[0003] The current electric energy meter box includes a box body and a circuit breaker, an electric energy meter, a current transformer, etc. installed in the box body. These electronic components are installed in the box body by bolts.

[0004] With regard to the above-mentioned related technologies, the box is not only used for waterproofing, dustproofing and anti-theft, but also serves as an installation carrier for electronic components. If the box is damaged or aged, and the internal electronic components are not damaged, when replacing the box, it is necessary to remove the electronic components in the box one by one, and then install the electronic component installation circuit on the new box, and the box replacement process is troublesome. Summary of the invention

[0005] In order to solve the above technical problems, the present application provides a busbar-type integrated intelligent electric energy metering box.

[0006] This application provides a busbar integrated intelligent electric energy metering box, which adopts the following technical solutions: A busbar-type integrated intelligent electric energy meter box comprises a box body, electronic components, wires made of metal conductors, and an installation panel for installing the electronic components and the wires, wherein the installation panel comprises a bottom plate, a cover plate, and a partition plate for separating and supporting the wires, and wire grooves are provided on the bottom plate and the partition plate; at least one partition plate is provided, and the partition plate is installed between the bottom plate and the cover plate, and the bottom plate and the box body are fixedly connected; A fixing assembly is connected between the bottom plate and the cover plate, and the fixing assembly includes a fixing rod and a fixing block, the fixing rod is installed on the bottom plate, the fixing rod passes through the partition plate, the fixing block is slidably installed on the cover plate, a slot is provided on the rod wall of the fixing rod, and a driving assembly for driving the fixing block to insert into or leave the slot is installed on the cover plate; The inner wall of the wire groove is provided with positioning blocks, the positioning blocks are distributed at intervals along the direction of the wire groove, and the positioning blocks are in contact with the wire; The bottom plate and the partition plate are both equipped with heat dissipation pipes, a medium flows in the heat dissipation pipes, the heat dissipation pipes are distributed along the wire grooves, and the heat dissipation pipes are connected to the positioning blocks; The positioning block is a hollow structure with openings at both ends, a heat dissipation pipe is installed between two adjacent positioning blocks, and the heat dissipation pipe is connected to the positioning block; The fixing rod is an internal hollow structure, and the fixing rod is connected to a positioning block of the bottom plate and the partition plate at the same time, and the positioning block is connected to a medium source through the fixing rod.

[0007] By adopting the above technical solution, the installation panel includes a bottom plate, a cover plate and a partition plate. The bottom plate and the partition plate are provided with wire grooves for neatly and safely arranging the wires, and the wiring is more intuitive and convenient for inspection. The electronic components are installed in the box through the installation panel. When the box is aged and needs to be replaced, it is only necessary to move the entire installation panel to the new box without rearranging the electronic components and circuit connections. This design greatly simplifies the replacement process of the old and new boxes and improves the convenience of maintenance; The installation panel is compact in structure through the arrangement of the bottom plate, cover plate and partition plate, as well as the application of fixing components (fixing rod and fixing block). The hollow structure of the fixing rod not only enhances the structural strength, but also realizes the connection of the heat dissipation pipe, so that the installation panel has good heat dissipation performance while ensuring the structural strength; a fixing rod can simultaneously connect the heat dissipation pipe on the bottom plate and the heat dissipation pipe on the multi-layer partition plate, thereby improving the compactness of the installation panel; The heat dissipation pipes are distributed along the wire grooves and connected to the positioning blocks, forming an efficient heat dissipation system. This system effectively reduces the temperature inside the installation panel, ensures the normal operating temperature range of electronic components and wires, and thus improves the reliability and service life of the equipment. At the same time, this heat dissipation design helps to reduce the temperature rise caused by loose node installation and better protect electronic components and wires.

[0008] Optionally, there are several base plates of the installation panel, the cover plate, the partition plate and the base plate are arranged correspondingly, and the partition plates on the same plane are spliced ​​with each other.

[0009] By adopting the above technical solution, the cover plate and the bottom plate are both snap-connected to the partition. When multiple partitions are spliced ​​together, the cover plate and the bottom plate installed on the partition can also form an indirect connection. The size and layout of the installation panel can also be adjusted according to actual needs, thereby improving the adaptability and practicality of the electricity meter box.

[0010] Optionally, the driving assembly includes a driving rod and a spring, and the cover plate is provided with a receiving groove for accommodating the fixed block. One end of the spring is fixedly installed in the receiving groove, and the other end of the spring is installed on the fixed block. The spring drives the fixed block to always have a tendency to leave the fixed rod. The driving rod is inserted into the cover plate, and the driving rod is used to drive the fixed block to be inserted into the slot.

[0011] By adopting the above technical solution, the design of the drive assembly (drive rod and spring) provides a simple and reliable locking mechanism. The spring drives the fixing block to always have a tendency to leave the fixing rod, and the fixing block can be easily locked and unlocked through the drive rod, ensuring the stability and safety of the installation panel.

[0012] Optionally, the positioning block is connected to a ribbon, and the ribbon is provided with a ventilation channel for communicating with the positioning block.

[0013] By adopting the above technical solution, the heat dissipation performance is further improved by increasing air flow.

[0014] In summary, the present application includes at least one of the following beneficial effects: 1. The installation panel provides an installation basis for electronic components and wires, and can protect and fix the wires. The installation panel and the box are independent of each other, which is convenient for box replacement and maintenance; 2. By adding heat dissipation devices and optimizing the wiring layout, the internal temperature of the equipment is effectively reduced, the risk of damage to electronic components and wires is reduced, and the reliability and service life of the energy meter box are improved; 3. Through flexible installation panel layout and innovative heat dissipation medium circulation method, the equipment size and heat dissipation performance can be adjusted according to actual needs, which improves the adaptability and practicality of the electric energy metering box. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 It is a schematic diagram of the structure in which the installation panel and the box body are separated in Example 1 of the present application; Figure 3 This is a schematic diagram of the structure of overhead isolation of conductors in Example 1 of the present application; Figure 4 is a partial exploded schematic diagram of the installation panel of Example 1 of the present application; Figure 5 is a schematic cross-sectional view of the internal structure of the installation panel of Example 1 of the present application; Figure 6 is a partial explosion diagram of the installation panel of Example 2 of the present application; Figure 7 This is a schematic diagram of the structure of the bottom plates of Embodiment 2 of the present application, which are connected to each other through dovetail blocks; Figure 8 is a cross-sectional view of Embodiment 3 of the present application showing that the bottom plate and the cover plate are connected by a fixing assembly; Fig. 9 yes Figure 8 A schematic diagram of the structure at A; Fig.10This is a schematic diagram of the structure of the heat dissipation pipes distributed along the wire grooves in Example 4 of the present application; Fig.11 This is a schematic diagram of the structure of the fourth embodiment of the present application showing the connection between the fixing rod and the positioning block; Fig.12 yes Fig.11 Schematic diagram of the structure at B; Fig.13 yes Fig.11 Schematic diagram of the structure at C.

[0016] Explanation of the reference numerals: 10, housing; 20, electronic component; 21, circuit breaker; 22, control switch; 23, electric energy meter connector; 24, connector; 30, wire; 40, mounting panel; 41, bottom plate; 42, partition; 43, cover plate; 44, wire trough; 50, positioning block; 51, second connecting pipe; 60, fixing assembly; 61, fixing rod; 611, slot; 62, fixing block; 63, second abutting block; 64, first connecting pipe; 65, vent; 66, first limiting ring; 67, second limiting ring; 70, mounting block; 71, receiving groove; 72, first abutting block; 80, driving assembly; 81, driving rod; 82, spring; 90, heat dissipation pipe; 91, ribbon. DETAILED DESCRIPTION

[0017] The following is combined with Figure 1 -Attached Fig.13 This application is described in further detail.

[0018] The embodiment of the present application discloses a busbar-type integrated intelligent electric energy metering box.

[0019] Reference Figure 1 and Figure 2 The busbar-type integrated intelligent electric energy meter box includes a box body 10, electronic components 20, different electronic components 20 are connected by wires 30, and an installation panel 40 for installing the electronic components 20 and the wires 30. The wire 30 can be composed of a flat metal conductor, such as a copper busbar or an aluminum busbar. The embodiment of the present application preferably uses a copper busbar. The electronic component 20 includes a circuit breaker 21, a control switch 22, and an electric energy meter connector 23, etc. The electric energy meter connector 23 of the embodiment of the present application is installed with six. When the electronic components 20 and the wires 30 are connected to form a complete circuit according to the circuit standard, the electronic components 20 and the wires 30 are installed on the installation panel 40, and the installation panel 40 is clamped on the inner wall of the box body 10. If the box body 10 is damaged or unsuitable, the installation panel 40 and the box body 10 are conveniently separated.

[0020] Reference Figure 3Different wires 30 are isolated from each other and do not interfere with each other. When a line has a high temperature, the impact on other branches is reduced, but the line heating mainly relies on the switch for timely protection. The wire 30 is processed in one go using a CNC multi-axis bending device to ensure the consistency and accuracy of each wire 30 and facilitate installation. The connector 24 and the wire 30 used for conducting electricity with the electronic component 20 are fixed by riveting and expansion.

[0021] Specifically, refer to Figure 4 and Figure 5 The installation panel 40 includes a bottom plate 41, a partition plate 42 and a cover plate 43. A space for accommodating the wire 30 is formed between the bottom plate 41 and the cover plate 43. The partition plate 42 is installed between the bottom plate 41 and the cover plate 43. The partition plate 42 is used to support and separate the wires 30 at different layers. There is a gap between two adjacent partition plates 42, the partition plate 42 and the bottom plate 41, and the cover plate 43 and the partition plate 42 to dissipate heat. The bottom plate 41 can be fixedly connected to the inner wall of the box body 10 by bolts. The bottom plate 41 and the partition plate 42 are both provided with a wire groove 44, and the wire 30 is embedded in the wire groove 44. A positioning block 50 is installed on the inner wall of the wire groove 44. The positioning block 50 is used to press the wire 30 so that the wire 30 can be stably installed in the wire groove 44. The positioning blocks 50 are distributed at intervals along the distribution direction of the wire grooves 44 . The positioning blocks 50 are fixedly mounted on the bottom plate 41 and the cover plate 43 by bolts. The bottom plate 41 and the cover plate 43 are provided with threaded holes.

[0022] The bottom plate 41 and the adjacent partition plates 42 are clamped together by means of protrusions and recesses, and the clamping methods of the adjacent partition plates 42 and the cover plate 43 and the adjacent partition plates 42 are the same. The clamping method is used for connection, which is convenient for installation and disassembly.

[0023] After installing the bottom plate 41, first install the first layer of wires 30, clamp the partition 42 on the bottom plate 41, install the second layer of wires 30, install the second partition 42 on the first partition 42, install the third layer of wires 30, and so on. When all the wires 30 are installed, the cover plate 43 is used to cover the wires 30. The cover plate 43 has a portion for the connector 24 to extend, so as to facilitate the connection between other electronic components 20, such as the electric energy meter connector 23 and the wires 30. The wires 30 are located inside the installation panel 40, and the electric energy meter connector 23 is located outside the installation panel 40.

[0024] Reference Figure 6 and Figure 7Furthermore, one electric energy meter connector 23 in the installation panel 40 corresponds to one cover plate 43, and the cover plate 43 corresponding to the electric energy meter connector 43 is penetrated with four through holes. The electric energy meter connectors 23 with 2 rows and 3 columns correspond to the cover plates 43 with two rows and three columns, and the bottom plate 41 and the partition plate 42 corresponding to the cover plate 43 are also correspondingly spliced ​​with two rows and three columns. The cover plate 43 and the partition plate 42 are clamped up and down by protrusions, and there can be a gap or mutual fit between adjacent cover plates 43. The bottom plate 41 and the partition plate 42 are clamped up and down, and in the same row and the same layer of partition plates 42, the adjacent two partition plates 42 are spliced ​​with each other, and the surfaces of the partition plates 42 on the same layer are flush. Since the partition plates 42 are spliced ​​to form a whole, the cover plate 43 and the bottom plate 41 clamped with the partition plates 42 are indirectly formed into a whole. Preferably, the adjacent two bottom plates 41 in the two rows are also clamped by dovetail blocks.

[0025] The connection method of multiple boards being connected to each other by being clipped together is an existing technology, which mainly applies the installation method of multiple boards being spliced ​​to each other to the circuit layout. If the electric energy meter connector 23 is added later, the corresponding electronic components 20 and wires 30 can be added on the original basis, and the installation panel 40 provides a new installation carrier for the corresponding electronic components 20 and wires 30 by splicing the bottom plate 41, the partition plate 42, and the cover plate 43, which protects and supports the newly installed electronic components 20 and wires 30.

[0026] Furthermore, a fixing assembly 60 is installed between the bottom plate 41 and the cover plate 43 .

[0027] Reference Figure 8 and Fig. 9 The fixing assembly 60 includes a fixing rod 61 and a fixing block 62. The fixing rod 61 is fixedly mounted on the bottom plate 41. A mounting block 70 for mounting the fixing block 62 is extended from the inner surface of the cover plate 43. A receiving groove 71 for accommodating the fixing block 62 is installed in the mounting block 70. The fixing block 62 is slidably mounted in the mounting block 70. A driving assembly 80 for driving the fixing block 62 to extend out of the mounting block 70 and insert or leave the fixing rod 61 is installed in the mounting block 70. When the fixing block 62 is inserted into the fixing rod 61, the bottom plate 41 and the cover plate 43 are further connected. The partition plate 42 is installed between the bottom plate 41 and the cover plate 43, which can also reinforce the partition plate 42 and enhance the stability of the entire installation panel 40.

[0028] When the bottom plate 41, the partition plate 42, and the cover plate 43 are snap-fitted in sequence to form the installation panel 40, the fixing rod 61 passes through all the partition plates 42, and one end of the fixing rod 61 fits against the side wall of the installation block 70. A slot 611 is provided on the rod wall of the fixing rod 61, and the slot 611 is connected to the receiving slot 71. The driving assembly 80 includes a driving rod 81, and the driving rod 81 is inserted into the cover plate 43. An inclined surface is provided on one end of the fixing block 62. When the driving rod 81 is inserted into the receiving slot 71, the driving rod 81 and the inclined surface of the fixing block 62 are in sliding contact, and the cooperation between the driving rod 81 and the fixing block 62 causes the fixing block 62 to be pushed into the slot 611. The fixing block 62 is connected to the fixing rod 61, so that the cover plate 43 and the bottom plate 41 form a stable connection relationship.

[0029] Reference Fig. 9 The driving assembly 80 further includes a spring 82, which drives the fixing block 62 to always have a tendency to leave the fixing rod 61. The inner wall of the receiving groove 71 is fixedly connected with a first abutting block 72, and the outer wall of the fixing block 62 is fixedly connected with a second abutting block 63. One end of the spring 82 is fixedly connected with the first abutting block 72, and the other end of the spring 82 is fixedly connected with the second abutting block 63. When the driving rod 81 drives the fixing block 62 to be inserted into the fixing rod 61, the spring 82 is in a compressed state. If the driving rod 81 is pulled out, the spring 82 releases a certain elastic force, so that the fixing block 62 leaves the fixing rod 61, and a direct connection relationship is no longer formed between the cover plate 43 and the bottom plate 41.

[0030] If the cover plate 43 is a whole piece, 2-4 fixing components 60 can be provided. If the cover plate 43 and the electric energy meter connector 23 are provided correspondingly, the multiple cover plates 43 are mainly connected with the partition plate 42. If there is a gap between adjacent cover plates 43, the fixing components 60 and the cover plates 43 can be provided one by one. If the adjacent cover plates 43 fit each other, 2-4 fixing components 60 can be provided correspondingly. The number of fixing components 60 is mainly designed according to the area of ​​the installation panel 40. The larger the area of ​​the installation panel 40, the more fixing components 60 can be provided.

[0031] Furthermore, heat dissipation pipes 90 are installed on both the bottom plate 41 and the partition plate 42 .

[0032] Reference Fig.10 The heat dissipation pipe 90 is distributed along the wire groove 44, the heat dissipation pipe 90 is located above the wire 30, and the heat dissipation pipe 90 is connected to the positioning block 50. The heat dissipation pipe 90 has a thin wall, and a medium flows in the heat dissipation pipe 90. The medium used in the embodiment of the present application is preferably gas, and the gas temperature is not lower than 20°C. When the gas enters the heat dissipation pipe 90, the wall temperature of the heat dissipation pipe 90 is lower than the internal ambient temperature, and the overall air in the box 10 is dry, and no condensed water is formed when the temperature in the installation panel 40 and the heat dissipation pipe 90 are heat exchanged.

[0033] The heat dissipation pipe 90 is made of rubber material. An insulated iron wire (not shown in the figure) can be installed on the outer wall of the heat dissipation pipe 90 to guide the heat dissipation pipe 90 so that the heat dissipation pipe 90 can be bent and deformed along the wire groove 44.

[0034] Specifically, refer to Fig.10 and Fig.11 The positioning block 50 is a hollow structure with openings at both ends. A heat dissipation pipe 90 is installed between two adjacent positioning blocks 50, and the heat dissipation pipe 90 is connected to the positioning block 50. If the bottom plate 41 is a plurality of splicing relationships, the heat dissipation pipes 90 are connected to each other through the positioning blocks 50. After the plurality of partitions 42 on the same layer are spliced, the heat dissipation pipes 90 are connected to each other through the plurality of positioning blocks 50.

[0035] Reference Fig.12 The positioning block 50 is also connected with a streamer 91, which is made of a double-layer plastic film. The double-layer structure of the streamer 91 forms a ventilation channel for communicating with the positioning block 50. The streamer 91 floats due to the flow of gas, speeding up the air flow speed in the installation panel 40 and improving the heat dissipation effect in the installation panel 40.

[0036] Further, refer to Fig.13 , the fixed rod 61 is an internal hollow structure. The fixed rod 61 is connected to the positioning block 50 near the bottom plate 41. When the fixed rod 61 passes through the partition 42, it is also connected to a positioning block 50 on each layer of the partition 42. The positioning block 50 is connected to a medium source through the fixed rod 61. Since the medium of the embodiment of the present application is preferably gas, the medium source is an inflatable device (not shown in the figure). The inflatable device includes an inflatable pump, an air inlet pipe and an air outlet pipe, and the inflatable pump is located outside the box body 10. The air inlet pipe is connected to one of the fixed rods 61, and the air outlet pipe is connected to other fixed rods 61. The side wall of the bottom plate 41 is provided with a clearance hole for the air inlet pipe and the air outlet pipe to pass through. When the fixed rod 61 is filled with gas, the heat dissipation pipe 90 on the bottom plate 41 and each layer of the partition 42 is passed with gas, and the gas can also flow out along other fixed pipes. The gas flows in the heat dissipation pipe 90, so that the heat dissipation pipe 90 can have a certain heat dissipation effect on the air in the installation panel 40.

[0037] Specifically, refer to Fig.13The fixed rod 61 is sealed with a first connecting pipe 64, and the positioning block 50 is connected with a second connecting pipe 51. The first connecting pipe 64 and the second connecting pipe 51 are threadedly connected. The first connecting pipe 64 rotates, and the second connecting pipe 51 does not move. The first connecting pipe 64 and the second connecting pipe 51 are connected to each other, so that the fixed rod 61 and the positioning block 50 are connected. The connecting pipe rotates on the fixed rod 61, and the outer tube wall of the first connecting pipe 64 is provided with a vent hole 65. The tube wall of the first connecting pipe 64 is connected with a first limiting ring 66 and a second limiting ring 67. The setting of the first limiting ring 66 and the second limiting ring 67 limits the movement range of the first connecting pipe 64, so that no matter how the first connecting pipe 64 moves, the vent hole 65 is located in the fixed rod 61 and is connected to the fixed rod 61, and the gas enters the first connecting pipe 64 through the vent pipe. Due to the different positions of the positioning blocks 50, multiple first connecting tubes 64 are vertically penetrated through the fixing rod 61. The first connecting tubes 64 correspond to the positioning blocks 50 at the same horizontal position. The distances between the positioning blocks 50 and the fixing rod 61 are different, so the lengths of the first connecting tubes 64 on the same fixing rod 61 are different.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. Busbar integrated intelligent electric energy metering box, characterized by: The invention comprises a box (10), an electronic component (20), a wire (30) made of a metal conductor, and a mounting panel (40) for mounting the electronic component (20) and the wire (30), wherein the mounting panel (40) comprises a bottom plate (41), a cover plate (43), and a partition plate (42) for separating and supporting the wire (30), wherein the bottom plate (41) and the partition plate (42) are both provided with a wire groove (44); at least one partition plate (42) is provided, and the partition plate (42) is mounted between the bottom plate (41) and the cover plate (43); and the bottom plate (41) and the box (10) are fixedly connected; A fixing assembly (60) is connected between the bottom plate (41) and the cover plate (43), the fixing assembly (60) comprising a fixing rod (61) and a fixing block (62), the fixing rod (61) being mounted on the bottom plate (41), the fixing rod (61) penetrating the partition plate (42), the fixing block (62) being slidably mounted on the cover plate (43), a slot (611) being provided on a rod wall of the fixing rod (61), and a driving assembly (80) for driving the fixing block (62) to insert into or leave the slot (611) being mounted on the cover plate (43); Positioning blocks (50) are installed on the inner wall of the wire groove (44), the positioning blocks (50) are distributed at intervals along the direction of the wire groove (44), and the positioning blocks (50) are in contact with the wire (30); The bottom plate (41) and the partition plate (42) are both provided with heat dissipation pipes (90), a medium flows in the heat dissipation pipes (90), the heat dissipation pipes (90) are distributed along the wire grooves (44), and the heat dissipation pipes (90) are connected to the positioning blocks (50); The positioning block (50) is a hollow structure with openings at both ends, and a heat dissipation pipe (90) is installed between two adjacent positioning blocks (50), and the heat dissipation pipe (90) is connected to the positioning block (50). The fixing rod (61) is an internal hollow structure, and one fixing rod (61) is simultaneously connected to a positioning block (50) of the bottom plate (41) and the partition plate (42), and the positioning block (50) is connected to a medium source through the fixing rod (61).

2. The busbar integrated intelligent electric energy meter box according to claim 1 is characterized in that: The installation panel (40) has a plurality of bottom plates (41), the cover plate (43), the partition plate (42) and the bottom plate (41) are arranged correspondingly, and the partition plates (42) on the same plane are spliced ​​with each other.

3. The busbar integrated intelligent electric energy meter box according to claim 1 is characterized in that: The driving assembly (80) comprises a driving rod (81) and a spring (82); a receiving groove (71) for receiving the fixed block (62) is provided on the cover plate (43); one end of the spring (82) is fixedly mounted in the receiving groove (71); the other end of the spring (82) is mounted on the fixed block (62); the spring (82) drives the fixed block (62) to always have a tendency to leave the fixed rod (61); the driving rod (81) is inserted into the cover plate (43); and the driving rod (81) is used to drive the fixed block (62) to be inserted into the slot (611).

4. The busbar integrated intelligent electric energy meter box according to claim 1 is characterized in that: The positioning block (50) is connected to a streamer (91), and the streamer (91) is provided with a ventilation channel for communicating with the positioning block (50).

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