Intelligent signal acquisition module

Abstract

The invention discloses an intelligent signal acquisition module, and relates to the technical field of power monitoring, the intelligent signal acquisition module comprises a host and a sensor, the sensor is used for acquiring cable information including voltage, current and temperature, and the host is electrically connected with the sensor and is used for receiving the cable information fed back by the sensor and transmitting the cable information to a controller of an external electric appliance cabinet; wherein the sensor comprises an electricity taking unit, a temperature measuring unit, a current acquisition unit and an electronic board; the cable passes through the cable fixing frame of the power taking unit and the current acquisition unit in sequence, and the cable fixing frame clamps the passing cable, so that the puncturing convex block directly pierces into the insulating layer of the cable and reaches the cable core, the lossless and safe power taking of the cable is realized, and the voltage and the current are measured; when the cable is clamped, the heat conduction member of the temperature measurement unit synchronously clamps the cable and transmits the heat of the cable to the temperature measurement probe, thereby realizing temperature measurement. The problem that an existing electric cabinet cable signal collecting device cannot achieve safe power taking and cannot collect voltage, current and temperature signals at the same time is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power monitoring, and in particular to a signal acquisition intelligent module. Background Art

[0002] Medium and low voltage electrical switchgear is widely used in power systems. Its main function is to manage and control the transmission and distribution of electricity. In low voltage electrical cabinets, monitoring the voltage signal and temperature of cables is an important part of achieving safe and stable operation of electrical equipment. However, traditional transformer technology has many shortcomings in practical applications and is difficult to meet modern electricity needs.

[0003] Traditional transformers: (1) Limitations in obtaining voltage signals: When measuring voltage signals, common transformers must first strip the insulation layer of the cable, connect the cable cores, and directly obtain the voltage signal from the cable to be tested. This method has the following problems: complex operation and low efficiency; there are safety hazards: after stripping the insulation layer, the live part of the cable is exposed to the air, which can easily cause accidents such as electric shock and short circuit, seriously affecting the safety of electricity use.

[0004] (2) It cannot meet the additional requirements of temperature measurement. Cable temperature is an important parameter for the operation of electrical equipment. If the temperature is too high, there is a risk of power transmission accidents. To monitor the cable temperature, it is usually necessary to install additional sensor equipment to achieve temperature measurement. However, traditional temperature measurement equipment used in electrical cabinets is large in size, and equipment that integrates multiple functions is usually large in size, which is not conducive to the compact design of low-voltage electrical cabinets.

[0005] (3) Limitations of traditional transformers: The design of traditional transformers is difficult to meet the requirements of miniaturization, multi-function and high efficiency at the same time. In the current era of rapid development, the modernization and upgrading of power systems requires transformers to be able to measure voltage signals in a simpler, safer and more efficient way.

[0006] In summary, it is found that the prior art has at least the following technical problems:

[0007] The existing electrical cabinet cable signal acquisition device cannot achieve the problem of safe power supply and simultaneous acquisition of voltage, current and temperature signals. Summary of the invention

[0008] The purpose of the present invention is to provide a signal acquisition intelligent module to solve the problem that the existing electric cabinet cable signal acquisition device cannot achieve safe power supply and simultaneous acquisition of voltage, current and temperature signals.

[0009] The various technical effects that can be produced by the preferred technical solutions among the various technical solutions provided by the present invention are described in detail below.

[0010] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0011] The present invention provides a signal acquisition intelligent module, comprising a host and a sensor, wherein the sensor is used to collect cable information including voltage, current and temperature, and the host is electrically connected to the sensor to receive the cable information fed back by the sensor and transmit it to a controller in an external electrical cabinet; the sensor comprises a power taking unit, a temperature measuring unit, a current collecting unit and an electronic board installed in a shell made of an insulator; a wire hole is provided on the shell, and the power taking unit and the current collecting unit are respectively installed on both sides of the wire hole; the power taking unit comprises a cable fixing frame made of a conductor, a heat conducting member, a locking screw and a power taking wire; the cable fixing frame is aligned with the wire hole, the top of the cable fixing frame is threadedly connected to the tail of the locking screw, and the head of the locking screw rests on the screw support in the shell; one end of the heat conducting member extends into the cable fixing frame and abuts against the end of the locking screw, and the other end of the heat conducting member abuts against the temperature measuring probe of the temperature measuring unit The cable fixing frame is provided with a puncture protrusion at the bottom; the external cable passes through the cable fixing frame, the wire hole and the current collection unit to detect the current of the cable; the cable fixing frame is driven to be lifted up by the locking screw, so that the cable is actively squeezed by the puncture protrusion and passively squeezed by the heat conductive member, the puncture protrusion pierces the insulating layer of the cable, and the puncture protrusion contacts the wire core of the cable, so that the power-taking wire is electrically connected to the cable through the puncture protrusion, the cable fixing frame, the locking bolt and the heat conductive member, so as to realize safe power taking on the cable; the cable is passively squeezed by the heat conductive member, and the heat of the cable is transferred to the temperature measuring probe of the temperature measuring unit through the heat conductive member, so as to realize temperature detection of the cable; the electronic board is electrically connected to the power-taking wire, the temperature measuring unit and the current collection unit, and the electronic board is electrically connected to the host.

[0012] In one embodiment, the host is installed on the top of the sensor; a terminal head is provided on the side of the host, and a terminal interface is provided on the side of the sensor; a slide groove is provided on the top of the sensor, and a slide rail is provided on the bottom of the host; when assembled, the host is embedded in the top of the sensor from the side, the slide rail is slid into the slide groove, and the terminal head is inserted into the terminal interface.

[0013] In one embodiment, a locking through hole is provided on the top of the sensor, and the locking through hole vertically passes through the screw support in the shell, that is, the locking through hole passes through the head end face of the locking screw, for providing a channel for a screwdriver to extend into the shell to screw the locking screw.

[0014] In one of the embodiments, the top of the sensor is provided with a torque mark for turning the locking screw so that the locking bolt at least reaches the torque mark for driving the piercing protrusion to pierce the insulation layer of the cable.

[0015] In one embodiment, the locking screw drives the cable fixing frame to cause the piercing protrusion to pierce the insulation layer of the cable to reach the cable core, and the torque is at least 3.5 Nm.

[0016] In one of the embodiments, a plurality of the wire holes are provided in the shell; a single power collection unit, a single temperature measurement unit and a single current collection unit constitute a data collection group; a group of the data collection groups is correspondingly installed in each of the wire holes; and a plurality of the data collection groups are electrically connected to the electronic board.

[0017] In one of the embodiments, at least three wire holes are provided in the housing; the three wire holes respectively pass through L1, L2 and L3 cables of three-phase electricity.

[0018] In one of the embodiments, a plurality of the puncture protrusions are disposed at the bottom of the cable fixing frame, and the plurality of the puncture protrusions are disposed side by side. The plurality of the side-by-side puncture protrusions are used to adapt to the cables of different diameters.

[0019] In one embodiment, the piercing protrusion is a triangular iron piece formed integrally with the cable fixing frame.

[0020] In one embodiment, the side of the cable fixing frame is provided with an injection through hole; the outer side of the cable fixing frame is provided with a thermally conductive adhesive storage area, and the injection through hole is connected to the thermally conductive adhesive storage area; the side of the shell corresponding to the thermally conductive adhesive storage area is provided with a push-pull groove, and a push-pull block is installed in the push-pull groove, and the two ends of the push-pull block are respectively an extrusion plate and a handle; the handle extends out of the push-pull groove, and the extrusion plate extends into the thermally conductive adhesive storage area; after passing through the cable, the power supply of the cable is completed, based on the puncture protrusion and the After the heat conductive component locks the cable, the handle is pushed to move the extrusion plate toward the injection through hole in the heat conductive glue storage area, and the heat conductive glue in the heat conductive glue storage area is squeezed into the cable fixing frame, so that the heat conductive glue fills the space surrounded by the cable fixing frame and the heat conductive component, and the heat conductive glue wraps the cable; the heat conductive glue is used to fully and timely introduce the heat of the cable to the heat conductive component, thereby reducing the hysteresis of the temperature measuring unit in obtaining the temperature data of the cable and improving the accuracy of the temperature measuring unit in obtaining the temperature data.

[0021] The beneficial effects of the present invention are as follows:

[0022] The signal acquisition intelligent module of the present invention integrates the functions of power collection, voltage, temperature and current signal collection, and has the significant advantages of compact structure, diverse functions, safety and high efficiency, etc. It can meet the modern power system's requirements for high efficiency, safety and intelligence of signal acquisition equipment. It realizes:

[0023] (1) Safe and efficient power collection and voltage measurement: Traditional voltage signal acquisition usually requires stripping off the cable insulation layer, while the present invention uses a puncture bump to pierce the insulation layer, thereby achieving power collection without stripping off the cable insulation layer. The puncture bump is in direct contact with the cable core, ensuring the stability and reliability of the electrical connection and avoiding safety hazards such as electric shock and short circuit caused by exposed cores. At the same time, the locking screw drives the cable fixing frame to lift up, so that the puncture bump and the heat conductor clamp the cable, and the close contact with the cable reliably fixes the position of the cable, and the operation is simple and convenient, which greatly improves the installation efficiency of the signal acquisition intelligent module.

[0024] (2) Multifunctional integrated design;

[0025] The present invention integrates the voltage power supply, temperature measurement and current collection functions into one sensor module, and realizes comprehensive monitoring of the cable status through the synergy of the power supply unit, current collection unit and temperature measurement unit. Among them, voltage signal collection: through the puncture bump contact with the wire core, the cable voltage signal is accurately collected, avoiding the complex wiring and high cost of traditional equipment.

[0026] Temperature signal acquisition: The heat of the cable is transferred to the temperature measuring probe through the heat conductor, realizing real-time measurement of the cable temperature, effectively avoiding the hidden danger of power failure caused by excessive cable temperature rise.

[0027] Current signal acquisition: The cable passes through the current acquisition unit and uses the mutual inductance coil to directly complete the current detection. The design is simple and efficient.

[0028] This design not only reduces the use of independent equipment, reduces the size of monitoring equipment and installation space requirements, but also improves the overall integration of the power system.

[0029] (3) Compact structure and easy installation;

[0030] The shell of the present invention is made of insulating material, has high durability and safety, and is designed with a wire hole for easy insertion of cables. The power taking unit and the current collection unit are respectively arranged on both sides of the wire hole, so that cable fixing, signal collection and temperature measurement can be efficiently completed in a limited space. By driving the locking screws, the cable fixing frame can flexibly adjust the space inside the frame, clamp the cables, and flexibly adapt to cables of different diameters, further simplifying the installation process. Compared with traditional equipment, the design of the present invention is more modular, and the installation is faster and more convenient, reducing the time and cost of on-site construction.

[0031] (4) Reliable data transmission;

[0032] Through the electronic board and the electrical connection of the power lead, temperature measurement unit and current acquisition unit, the power and measurement data are acquired at the same time and transmitted to the host, and then fed back to the external controller by the host, realizing the full process of data acquisition, processing and transmission. And with accurate process data and fast response, it provides a reliable module for real-time monitoring of the power system, which is suitable for the upgrade needs of smart grids and modern electrical equipment.

[0033] (5) Strong practicality and applicability

[0034] The present invention is suitable for signal acquisition scenarios of various medium and low voltage power equipment, especially in modern electrical cabinets with limited space and high functional integration requirements. Its compact structure and multifunctional characteristics can effectively improve the installation and maintenance efficiency and integration of the equipment, and has broad market application prospects.

[0035] In summary, the signal acquisition intelligent module of the present invention has significant advantages in terms of functional integration, installation convenience, safety and practicality, and can provide reliable technical support for the upgrade of smart grids and power equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 1 is a schematic diagram of the isometric structure of the signal acquisition intelligent module according to the first embodiment of the present invention;

[0038] Figure 2 is a schematic diagram of the internal structure of the back side of the sensor of the first embodiment of the present invention;

[0039] Figure 3 is a schematic diagram of the internal structure of the front side of the sensor of the first embodiment of the present invention;

[0040] Figure 4 It is a partial cross-sectional structural schematic diagram of the host and the sensor of the first embodiment of the present invention;

[0041] Figure 5 is a schematic diagram of the isometric structure of the sensor of the first embodiment of the present invention;

[0042] Figure 6 It is a schematic diagram of the isometric structure of the main machine of the first embodiment of the present invention;

[0043] Figure 7is a front view structural schematic diagram of a sensor according to a second embodiment of the present invention;

[0044] Figure 8 It is a schematic diagram of the internal structure of the front side of the sensor of the second embodiment of the present invention.

[0045] The reference numerals are as follows:

[0046] 1. Host; 11. Wiring terminal head; 12. Slide rail;

[0047] 2. Sensor; 21. Wiring terminal interface; 22. Slide slot; 23. Locking through hole;

[0048] 3. Power supply unit; 31. Cable fixing frame; 311. Piercing bump; 312. Injection hole; 32. Heat conducting member; 33. Locking screw; 34. Power supply wire;

[0049] 4. Temperature measuring unit; 41. Temperature measuring probe;

[0050] 5. Current acquisition unit;

[0051] 6. Electronic board;

[0052] 7. Shell; 71. Wire hole; 72. Screw support; 73. Push-pull slot; 74. Push-pull block; 741. Extrusion plate; 742. Handle;

[0053] 8. Thermally conductive adhesive storage area; 81. Thermally conductive adhesive;

[0054] 9. Cables. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0056] A specific implementation method provides a signal acquisition intelligent module. During installation, the cable passes through the cable fixing frame of the power collection unit and the current collection unit in turn, and the passed cable is clamped by the cable fixing frame, so that the piercing protrusion directly penetrates the insulation layer of the cable and reaches the core, thereby achieving lossless and safe power collection of the cable and measuring voltage and current; when clamping the cable, the heat conductive part of the temperature measuring unit simultaneously clamps the cable and conducts the heat of the cable to the temperature measuring probe to achieve temperature measurement; it effectively solves the problem that the existing cable signal acquisition device of the electric cabinet cannot achieve safe power collection and simultaneous collection of voltage, current and temperature signals.

[0057] In addition, all the contents of the configurations shown in the following embodiments are not necessarily limited to the solutions of the invention described in the claims.

[0058] The first implementation of the signal acquisition intelligent module is as follows Figures 1 to 6As shown, it includes a host 1 and a sensor 2, the sensor 2 is used to collect cable 9 information including voltage, current and temperature, the host 1 is electrically connected to the sensor 2 to receive the cable 9 information fed back by the sensor 2 and transmit it to the controller of the external electrical cabinet; the sensor 2 includes a power taking unit 3, a temperature measuring unit 4, a current collecting unit 5 and an electronic board 6 installed in a shell 7 made of an insulator; the shell 7 is provided with a wire hole 71, the power taking unit 3 and the current collecting unit 5 are respectively installed on both sides of the wire hole 71; the power taking unit 3 comprises a cable fixing frame 31 made of conductor, a heat conducting member 32, a locking screw 33 and a power-taking wire 34; the cable fixing frame 31 is aligned with the wire hole 71, the top of the cable fixing frame 31 is threadedly connected with the tail of the locking screw 33, and the head of the locking screw 33 is against the screw support 72 in the housing 7; one end of the heat conducting member 32 extends into the cable fixing frame 31 and abuts against the end of the locking screw 33, and the other end of the heat conducting member 32 abuts against the temperature measuring probe 41 of the temperature measuring unit 4; the power-taking wire 34 is embedded in the cable fixing frame 31 and abuts against the end of the locking screw 3 ... end of the locking screw 33; the power-taking wire 34 is embedded in the cable fixing frame 31 and abuts against the end of the locking screw 33; the power-taking wire 34 is embedded in the cable fixing frame 31 and abuts against the end of the locking screw 33; the power-taking wire 34 is embedded in the cable fixing frame 31 and abuts against the end of the locking screw 33; the power-taking wire 34 is embedded in the cable fixing frame 31 and abuts against the end of the locking screw 33; the power-taking wire The cable fixing frame 31 is embedded in the heat conductive member 32; a puncture protrusion 311 is provided at the bottom of the cable fixing frame 31; the external cable 9 passes through the cable fixing frame 31, the wire hole 71 and the current collection unit 5 to detect the current of the cable 9; the cable fixing frame 31 is driven upward by the locking screw 33, so that the cable 9 is actively squeezed by the puncture protrusion 311 and passively squeezed by the heat conductive member 32, the puncture protrusion 311 pierces the insulation layer of the cable 9, and the puncture protrusion 311 contacts the wire core of the cable 9, so that the current collection unit 5 can be used to collect the current of the cable 9. The wire 34 is electrically connected to the cable 9 through the puncture protrusion 311, the cable fixing frame 31, the locking bolt and the heat conductor 32, thereby realizing safe power supply from the cable 9; the cable 9 is passively squeezed by the heat conductor 32, and the heat of the cable 9 is transferred to the temperature measuring probe 41 of the temperature measuring unit 4 through the heat conductor 32, thereby realizing temperature detection of the cable 9; the electronic board 6 is electrically connected to the power supply wire 34, the temperature measuring unit 4 and the current acquisition unit 5, and the electronic board 6 is electrically connected to the host 1.

[0059] Specifically, the current acquisition unit 5 is a mutual inductance coil. The temperature measurement unit 4 is a temperature sensor 2, and its temperature measurement probe 41 is a thermistor.

[0060] In addition, a locking through hole 23 is provided at the top of the sensor 2, and the locking through hole 23 vertically passes through the screw support position 72 in the shell 7, that is, the locking through hole 23 passes through the head end face of the locking screw 33, and is used to provide a channel for a screwdriver to extend into the shell 7 to screw the locking screw 33.

[0061] The signal acquisition intelligent module of the present invention integrates the functions of power collection, voltage, temperature and current signal collection, and has the significant advantages of compact structure, diverse functions, safety and high efficiency, etc. It can meet the modern power system's requirements for high efficiency, safety and intelligence of signal acquisition equipment. It realizes:

[0062] (1) Safe and efficient power collection and voltage measurement: Traditional voltage signal acquisition usually requires stripping the insulation layer of cable 9, while the present invention achieves power collection without stripping the insulation layer of cable 9 by piercing the insulation layer with the piercing protrusion 311. The piercing protrusion 311 is in direct contact with the core of cable 9, ensuring the stability and reliability of the electrical connection and avoiding safety hazards such as electric shock and short circuit caused by exposed core. At the same time, the locking screw 33 drives the cable fixing frame 31 to lift up, so that the piercing protrusion 311 and the heat conductor 32 clamp the cable 9, and the close contact with the cable 9 reliably fixes the position of the cable 9, and the operation is simple and convenient, which greatly improves the installation efficiency of the signal acquisition intelligent module.

[0063] (2) Multifunctional integrated design;

[0064] The present invention integrates the functions of voltage power supply, temperature measurement and current collection into a sensor 2 module, and realizes comprehensive monitoring of the state of the cable 9 through the synergistic effect of the power supply unit 3, the current collection unit 5 and the temperature measurement unit 4. Among them, voltage signal collection: the cable voltage signal is accurately collected by contacting the wire core through the puncture protrusion 311, avoiding the complex wiring and high cost of traditional equipment.

[0065] Temperature signal acquisition: The heat of the cable 9 is transferred to the temperature measuring probe 41 through the heat conductor 32, so that the temperature of the cable 9 can be measured in real time, effectively avoiding the hidden danger of power failure caused by excessive temperature rise of the cable 9.

[0066] Current signal acquisition: The cable 9 passes through the current acquisition unit 5, and the current detection is directly completed using the mutual inductance coil, which has a simple and efficient design.

[0067] This design not only reduces the use of independent equipment, reduces the size of monitoring equipment and installation space requirements, but also improves the overall integration of the power system.

[0068] (3) Compact structure and easy installation;

[0069] The housing 7 of the present invention is made of insulating material, has high durability and safety, and is designed with a wire hole 71 for the insertion of the cable 9. The power extraction unit 3 and the current collection unit 5 are respectively arranged on both sides of the wire hole 71, so that the cable 9 fixation, signal collection and temperature measurement can be efficiently completed in a limited space. By driving the locking screw 33, the cable fixing frame 31 can flexibly adjust the space inside the frame, clamp the cable 9, and flexibly adapt to cables 9 of different diameters, further simplifying the installation process. Compared with traditional equipment, the design of the present invention is more modular, and the installation is faster and more convenient, reducing the time and cost of on-site construction.

[0070] (4) Reliable data transmission;

[0071] The electronic board 6 is electrically connected with the power-taking wire 34, the temperature measuring unit 4 and the current acquisition unit 5, and the power and measurement data are obtained at the same time, and transmitted to the host 1, and then fed back to the external controller by the host 1, so as to realize the full process intelligence of data acquisition, processing and transmission. And it has accurate process data and fast response, providing a reliable module for real-time monitoring of the power system, which is suitable for the upgrading needs of smart grids and modern electrical equipment.

[0072] (5) Strong practicality and applicability

[0073] The present invention is suitable for signal acquisition scenarios of various medium and low voltage power equipment, especially in modern electrical cabinets with limited space and high functional integration requirements. Its compact structure and multifunctional characteristics can effectively improve the installation and maintenance efficiency and integration of the equipment, and has broad market application prospects.

[0074] In summary, the signal acquisition intelligent module of the present invention has significant advantages in terms of functional integration, installation convenience, safety and practicality, and can provide reliable technical support for the upgrade of smart grids and power equipment.

[0075] As one optional implementation,

[0076] Regarding the connection structure between the host 1 and the sensor 2, this embodiment is as follows: Figure 5 and Figure 6 As shown, the host 1 is installed on the top of the sensor 2; a terminal head 11 is provided on the side of the host 1, and a terminal interface 21 is provided on the side of the sensor 2; a slide groove 22 is provided on the top of the sensor 2, and a slide rail 12 is provided on the bottom of the host 1; when assembled, the host 1 is embedded in the top of the sensor 2 from the side, the slide rail 12 is slid into the slide groove 22, and the terminal head 11 is inserted into the terminal interface 21.

[0077] During application, the host 1 and the sensor 2 are combined through the slide rail 12 and the slide groove 22, so that after the sensor 2 is installed on the cable 9, the host 1 and the sensor 2 can be quickly combined and a reliable connection can be achieved; in addition, when the host 1 and the sensor 2 are assembled and combined, the side terminal head 11 is also connected to the terminal interface 21 to achieve a reliable electrical connection; the host 1 and the sensor 2 realize a modular design structure, which helps to achieve high efficiency and low cost in production, manufacturing and use.

[0078] The host 1 and the sensor 2 adopt a separate structure design, which is convenient for replacement and reduces maintenance costs.

[0079] Regarding how to reliably install the sensor 2 on the cable 9, this embodiment Figure 5 As shown, the top of the sensor 2 is provided with a locking screw 33 which is screwed so that the locking screw at least reaches a torque mark for driving the piercing protrusion 311 to pierce the insulation layer of the cable 9 .

[0080] Specifically, the locking screw 33 drives the cable fixing frame 31 to make the piercing protrusion 311 pierce the insulation layer of the cable 9 to reach the torque of the wire core, which is at least 3.5 Nm.

[0081] During application, the top of the sensor 2 is provided with a torque mark of 3.5 Nm. When the operator installs the sensor 2 on the cable 9, the torque mark required to be reached by the puncture locking screw 33 can be standardized to standardize the installation procedures, so that the puncture protrusion 311 can reliably puncture the insulation layer of the cable 9, providing a guarantee for the sensor 2 to achieve reliable and safe power supply and voltage measurement.

[0082] Regarding the number of the wire holes 71, the power taking unit 3, the temperature measuring unit 4 and the current collecting unit 5 in the sensor 2, this embodiment is as follows: Figures 1 to 3 As shown, a plurality of wire holes 71 are provided in the shell 7; a single power taking unit 3, a single temperature measuring unit 4 and a single current acquisition unit 5 form a data acquisition group; each wire hole 71 is correspondingly installed with a group of data acquisition groups; and a plurality of data acquisition groups are electrically connected to the electronic board 6.

[0083] During application, the wire holes 71 and the data collection group can be exaggerated to multiple and integrated on the sensor 2. Especially in compact electrical cabinets with special monitoring requirements, a specific number of wire holes 71 and data collection groups can be customized to achieve real-time monitoring of multiple cables 9.

[0084] Specifically, at least three wire holes 71 are provided in the housing 7 ; the three wire holes 71 respectively pass through the three-phase power cables L1 , L2 and L3 9 .

[0085] Regarding the shape, number and function of the puncture protrusion 311, this embodiment Figure 3 and Figure 4 As shown, the puncture protrusion 311 is a triangular iron sheet formed integrally with the cable fixing frame 31. A plurality of the puncture protrusions 311 are arranged side by side at the bottom of the cable fixing frame 31.

[0086] During application, the plurality of piercing protrusions 311 arranged side by side can adapt to the cables 9 of different diameters.

[0087] The second implementation of the signal acquisition intelligent module is as follows Figure 7 and Figure 8 As shown, the difference between this embodiment and the first embodiment is that the side of the cable fixing frame 31 is provided with an injection through hole 312; the outer side of the cable fixing frame 31 is provided with a thermally conductive adhesive storage area 8, and the injection through hole 312 is connected to the thermally conductive adhesive storage area 8; the side of the shell 7 corresponding to the thermally conductive adhesive storage area 8 is provided with a push-pull groove 73, and a push-pull block 74 is installed in the push-pull groove 73, and the two ends of the push-pull block 74 are respectively an extrusion plate 741 and a handle 742; the handle 742 extends out of the push-pull groove 73, and the extrusion plate 741 extends into the thermally conductive adhesive storage area 8; after passing through the cable 9, the power supply of the cable 9 is completed, based on the puncture convex After the block 311 and the heat conductive member 32 lock the cable 9, push the handle 742 to move the extrusion plate 741 toward the injection hole 312 in the heat conductive glue storage area 8, and squeeze the heat conductive glue 81 in the heat conductive glue storage area 8 into the cable fixing frame 31, so that the heat conductive glue 81 fills the space enclosed by the cable fixing frame 31 and the heat conductive member 32, and the heat conductive glue 81 wraps the cable 9; the heat conductive glue 81 is used to fully and timely introduce the heat of the cable 9 to the heat conductive member 32, reduce the hysteresis of the temperature measuring unit 4 in obtaining the temperature data of the cable 9, and improve the accuracy of the temperature measuring unit 4 in obtaining the temperature data.

[0088] When applied, the technical solution of the present invention realizes efficient conduction of the temperature of the cable 9 and efficient collection of the temperature signal of the cable 9 by adding the structural design of the thermal conductive glue storage area 8, the injection through hole 312, the push-pull groove 73 and the push-pull block 74.

[0089] Specifically, the design has significant advantages in terms of operational convenience, heat conduction efficiency, and temperature measurement accuracy: (1) improving the accuracy and response speed of temperature measurement;

[0090] After the cable 9 is fixed and powered, the present invention squeezes the thermal conductive adhesive 81 from the storage area into the cable fixing frame 31 through the push-pull block 74 set in the push-pull groove 73, so that the thermal conductive adhesive 81 fills the space between the cable fixing frame 31 and the heat conductive member 32, and wraps the cable 9. The high thermal conductivity of the thermal conductive adhesive 81 ensures that the heat of the cable 9 can be quickly transferred to the heat conductive member 32, and further transferred to the temperature measuring probe 41 of the temperature measuring unit 4.

[0091] It is achieved that the temperature measurement delay is reduced: in the first embodiment, the heat of the cable 9 is conducted only by relying on the heat conductor 32, and there may be a certain heat transfer lag, and the filling design of the thermal conductive glue 81 can significantly reduce this hysteresis and realize timely temperature data acquisition.

[0092] Improve temperature measurement accuracy: The thermal conductive adhesive 81 fully wraps the cable 9, thereby reducing heat loss during heat transfer, ensuring that the data collected by the temperature measuring unit 4 is closer to the actual temperature of the cable 9, and meeting the demand for high-precision temperature measurement.

[0093] (2) Enhance heat conduction efficiency;

[0094] The high thermal conductivity of the thermally conductive adhesive 81 effectively compensates for the problem of insufficient heat conduction efficiency of the single thermally conductive component 32 in a complex environment.

[0095] A complete heat conduction path is achieved: the thermal conductive adhesive 81 is directly filled between the cable 9 and the heat conductive member 32, thereby establishing a complete heat conduction path and avoiding heat loss caused by a small contact area or loose contact.

[0096] Uniform distribution: The thermal conductive adhesive 81 is filled through the injection hole 312. Due to its fluidity, it can be evenly distributed between the cable 9 and the thermal conductive member 32, ensuring the stability and consistency of heat conduction.

[0097] (3) Simple operation, convenient and efficient: The design of the push-pull groove 73 and the push-pull block 74 makes the filling process of the thermal conductive adhesive 81 more convenient and efficient. The squeeze plate 741 is driven by the handle 742 to squeeze the thermal conductive adhesive storage area 8, and the thermal conductive adhesive 81 can be smoothly filled into the cable fixing frame 31 through the injection hole 312. This process does not require additional equipment support and is suitable for rapid installation and adjustment on site.

[0098] (4) Improve the reliability and durability of the overall structure; in the present invention, the thermal conductive adhesive 81 not only plays a role in heat conduction, but also plays a protective role by wrapping the cable 9; after filling, the thermal conductive adhesive 81 forms a certain buffering and fixing effect on the cable 9, reducing the shaking or deviation of the cable 9 caused by external forces, and improving the stability of the power supply and temperature measurement system. The thermal conductive adhesive 81 wraps the cable 9, which helps to reduce the friction and wear between the cable 9 and the fixing frame, thereby extending the service life of the equipment.

[0099] The second embodiment significantly optimizes the temperature signal acquisition process of the temperature measuring unit 4 through the thermal conductive adhesive 81 filling technology, improves the temperature measurement accuracy and response speed, simplifies the operation process, and enhances the stability and reliability of the overall structure.

[0100] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described.

Claims

1. A signal acquisition intelligent module, characterized in that: It includes a host and a sensor, wherein the sensor is used to collect cable information including voltage, current and temperature, and the host is electrically connected to the sensor to receive the cable information fed back by the sensor and transmit it to the controller of the external electrical cabinet; The sensor comprises a power-collecting unit, a temperature-measuring unit, a current-collecting unit and an electronic board installed in a housing made of an insulator; a wire hole is provided on the housing, and the power-collecting unit and the current-collecting unit are respectively installed on both sides of the wire hole; The power taking unit comprises a cable fixing frame made of conductor, a heat conducting member, a locking screw and a power taking wire; the cable fixing frame is aligned with the wire hole, the top of the cable fixing frame is threadedly connected with the tail of the locking screw, and the head of the locking screw rests on the screw support in the shell; one end of the heat conducting member extends into the cable fixing frame and abuts against the end of the locking screw, and the other end of the heat conducting member abuts against the temperature measuring probe of the temperature measuring unit; the power taking wire is embedded in the heat conducting member; A puncture protrusion is provided at the bottom of the cable fixing frame; The external cable passes through the cable fixing frame, the wire hole and the current collection unit to detect the current of the cable; the cable fixing frame is driven to be lifted up by the locking screw, so that the cable is actively squeezed by the puncture protrusion and passively squeezed by the heat conductor, the puncture protrusion pierces the insulation layer of the cable, and the puncture protrusion contacts the wire core of the cable, so that the power-taking wire is electrically connected to the cable through the puncture protrusion, the cable fixing frame, the locking bolt and the heat conductor, so as to achieve safe power taking on the cable; The cable is passively squeezed by the heat conductive member, and the heat of the cable is transferred to the temperature measuring probe of the temperature measuring unit through the heat conductive member, thereby realizing temperature detection of the cable; The electronic board is electrically connected to the power-taking wire, the temperature measuring unit and the current collecting unit, and the electronic board is electrically connected to the host.

2. The signal acquisition intelligent module according to claim 1, characterized in that: The host is installed on the top of the sensor; The side of the host is provided with a wiring terminal head, and the side of the sensor is provided with a wiring terminal interface; the top of the sensor is provided with a slide groove, and the bottom of the host is provided with a slide rail; During assembly, the host is embedded in the top of the sensor from the side, the slide rail is slid into the slide groove, and the wiring terminal head is inserted into the wiring terminal interface.

3. The signal acquisition intelligent module according to claim 2, characterized in that: A locking through hole is provided on the top of the sensor, and the locking through hole vertically passes through the screw support in the shell, that is, the locking through hole passes through the head end face of the locking screw, for providing a channel for a screwdriver to extend into the shell to screw the locking screw.

4. The signal acquisition intelligent module according to claim 3, characterized in that: The top of the sensor is provided with a torque mark for turning the locking screw so that the locking bolt at least reaches a torque mark for driving the piercing protrusion to pierce the insulation layer of the cable.

5. The signal acquisition intelligent module according to claim 1, characterized in that: The locking screw drives the cable fixing frame to make the piercing protrusion pierce the insulation layer of the cable to reach the torque of the wire core, which is at least 3.5Nm.

6. The signal acquisition intelligent module according to claim 1, characterized in that: A plurality of wire holes are provided in the shell; A single power acquisition unit, a single temperature measurement unit and a single current acquisition unit form a data acquisition group; A group of the data acquisition groups is installed corresponding to each of the wire holes; and a plurality of the data acquisition groups are electrically connected to the electronic board.

7. The signal acquisition intelligent module according to claim 6, characterized in that: At least three wire holes are provided in the shell; The three wire holes respectively pass through the three-phase power cables L1, L2 and L3.

8. The signal acquisition intelligent module according to claim 1, characterized in that: A plurality of puncture protrusions are arranged at the bottom of the cable fixing frame. The plurality of puncture protrusions are arranged side by side. The plurality of side-by-side puncture protrusions are used to adapt to the cables with different diameters.

9. The signal acquisition intelligent module according to claim 8, characterized in that: The piercing protrusion is a triangular iron piece formed integrally with the cable fixing frame.

10. The signal acquisition intelligent module according to claim 1, characterized in that: A spray through hole is provided on the side of the cable fixing frame; a heat conductive adhesive storage area is provided on the outer side of the cable fixing frame, and the spray through hole is communicated with the heat conductive adhesive storage area; A push-pull groove is provided on the side of the housing corresponding to the thermal conductive adhesive storage area, a push-pull block is installed in the push-pull groove, and the two ends of the push-pull block are respectively an extrusion plate and a handle; the handle extends out of the push-pull groove, and the extrusion plate extends into the thermal conductive adhesive storage area; After passing through the cable, power is taken from the cable. After the cable is locked by the puncture protrusion and the heat conductive member, the handle is pushed to move the extrusion plate toward the injection through hole in the heat conductive glue storage area, and the heat conductive glue in the heat conductive glue storage area is squeezed into the cable fixing frame, so that the heat conductive glue fills the space enclosed by the cable fixing frame and the heat conductive member, and the heat conductive glue wraps the cable; The thermal conductive adhesive is used to fully and timely introduce the heat of the cable to the thermal conductive member, reduce the hysteresis of the temperature measuring unit in acquiring the temperature data of the cable, and improve the accuracy of the temperature measuring unit in acquiring the temperature data.

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