Pipe penetrating type cable construction mechanical force monitoring device
By constructing a distributed monitoring network using tension and lateral pressure sensors during cable laying, the mechanical force is monitored in real time, and the power supply to the equipment is cut off when the threshold is exceeded. This solves the problem of insufficient mechanical force monitoring in cable conduit construction and achieves cable safety protection and life extension.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HOHAI UNIV
- Filing Date
- 2025-04-07
- Publication Date
- 2026-05-12
AI Technical Summary
During the cable laying process, the lack of mechanical force monitoring methods makes it difficult to obtain the cable stress in real time, resulting in poor accuracy. This makes the cable susceptible to damage due to human factors, affecting its performance and safety.
A distributed mechanical sensing network is constructed using tension and lateral pressure sensors to monitor the mechanical force of the cable in real time. When the force exceeds the threshold, the power supply to the equipment is cut off through the emergency stop module to prevent cable damage.
It enables real-time mechanical force monitoring and active protection during cable laying, avoiding excessive stretching and compression of cables, and improving construction safety and cable life.
Smart Images
Figure CN224233333U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of power technology and relates to a mechanical force monitoring device for cable installation in conduit. Background Technology
[0002] In power engineering, cable conduit laying is a common construction method, widely used in urban power grid construction, industrial plant power distribution systems, and power supply for large buildings. With the acceleration of urbanization and the continuous growth of electricity demand, the scale and complexity of cable conduit construction are also increasing. Currently, domestic power companies generally use manual traction or winch traction during conduit cable laying, with relatively limited means of monitoring mechanical forces. The traction force and lateral pressure on the cable during construction are difficult to obtain in real time, relying mainly on estimation and judgment based on the experience of construction personnel. This method is not only inaccurate but also prone to deviations due to human factors, failing to effectively prevent cable damage caused by excessive mechanical force. When the mechanical force on the cable exceeds its tolerance limit, it may lead to problems such as sheath breakage and conductor deformation, seriously affecting the cable's performance and lifespan, and even potentially causing safety accidents. Utility Model Content
[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a cable laying mechanical force monitoring device that can realize real-time monitoring and active protection of mechanical force throughout the entire cable laying process.
[0004] To achieve the above objectives, this utility model employs the following technical solution:
[0005] This utility model provides a mechanical force monitoring device for cable installation in conduit, the device including: a tension data acquisition module, a lateral pressure data acquisition module, a mechanical force data centralized receiving module, and a traction equipment emergency stop module;
[0006] The tensile data acquisition module is connected in series between the cable's traction steel wire rope and the cable terminal mesh sleeve;
[0007] The lateral pressure data acquisition module is set at the turning node of the cable laying path and is used to guide the cable turning pulley and collect the lateral pressure during cable construction.
[0008] The input terminal of the mechanical force data collection receiving module is connected to the output terminal of the tensile force data acquisition module and the output terminal of the lateral pressure data acquisition module, respectively.
[0009] The output of the mechanical force data centralized receiving module is connected to the input of the traction equipment emergency stop module;
[0010] The output terminal of the traction equipment emergency stop module is connected to the power supply port of the traction equipment of the cable.
[0011] Furthermore, the tensile data acquisition module includes a tensile sensor, a first analog-to-digital converter, a first microprocessor, a first RS485 unit, and a first power line carrier unit;
[0012] The output terminal of the tension sensor is connected to the voltage input terminal of the first analog-to-digital converter unit;
[0013] The output terminal of the first analog-to-digital converter is connected to the input terminal of the first microprocessor;
[0014] The first power line carrier unit is communicatively connected to the first microprocessor via the first RS485 unit;
[0015] The side pressure data acquisition module includes a side pressure sensor, a second analog-to-digital converter, a second microprocessor, a second RS485 unit, and a second power line carrier unit;
[0016] The output terminal of the side pressure sensor is connected to the voltage input terminal of the second analog-to-digital converter;
[0017] The output of the second analog-to-digital converter is connected to the input of the second microprocessor;
[0018] The second power line carrier unit is connected to the second microprocessor via the second RS485 unit.
[0019] Furthermore, the tension sensor is an S-type tension sensor with a range of 0 to 10 tons;
[0020] The side pressure sensor is a pin-type side pressure sensor.
[0021] Furthermore, the mechanical force data centralized receiving module includes: a third microprocessor, a third RS485 unit, and a third power line carrier unit;
[0022] The input terminal of the traction equipment emergency stop module is connected to the output terminal of the third microprocessor;
[0023] The third power line carrier unit is communicatively connected to the third microprocessor via the third RS485 unit;
[0024] The third power line carrier unit is connected to the first power line carrier unit and the second power line carrier unit via a carrier circuit.
[0025] Furthermore, the first, second, and third microprocessors all use STM32 microprocessor chips.
[0026] Furthermore, the first RS485 unit, the second RS485 unit, and the third RS485 unit all include an RSM3485PHT chip.
[0027] Furthermore, the first power line carrier unit, the second power line carrier unit, and the third power line carrier unit all include a PD1380 broadband power line carrier.
[0028] Furthermore, the traction equipment emergency stop module includes a bidirectional thyristor optocoupler driver and a bidirectional thyristor connected to the output terminal of the bidirectional thyristor optocoupler driver;
[0029] The bidirectional thyristor optocoupler driver is model MOC3061; the bidirectional thyristor is model BTA100-1600.
[0030] Furthermore, it also includes a power module connected to the tensile data acquisition module, the lateral pressure data acquisition module, the mechanical force data centralized receiving module, and the traction equipment emergency stop module;
[0031] The power module includes a 24VDC to 12VDC unit, a 12VDC to 5VDC unit, and a 5VDC to 3VDC unit connected in series.
[0032] Furthermore, the 24VDC to 12VDC unit includes an XRE12 / 24S12W isolated power converter; the 12VDC to 5VDC unit includes an XL1509 power converter; and the 5VDC to 3VDC unit includes an AMS-1117 power converter.
[0033] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:
[0034] The cable laying mechanical force monitoring device provided by this utility model uses a large-range tension sensor and a pin-type lateral pressure sensor to construct a distributed mechanical sensing network. The tension sensor is connected in series between the traction steel wire rope and the cable terminal sleeve, accurately capturing dynamic load changes in the traction system. The pin-type lateral pressure sensor directly replaces the fixed shaft of the traditional cable steering pulley, integrated into key steering nodes of the laying path. While maintaining the original guiding function of the pulley, it analyzes the lateral pressure component of the cable construction in real time, preventing excessive stretching and compression of the cable. The mechanical force data output by the sensor is digitized by a 24-bit high-precision analog-to-digital converter and transmitted to the data centralized receiving module through the first and second power line carrier units. When the detected cable construction mechanical force exceeds the threshold, the traction equipment emergency stop module immediately triggers a composite protection circuit based on opto-isolation and bidirectional thyristor, promptly cutting off the equipment's power supply to prevent cable damage. Attached Figure Description
[0035] Figure 1 A schematic diagram of the structure of a conduit-type cable construction mechanical force monitoring device provided in this embodiment of the utility model;
[0036] Figure 2 This is a schematic diagram of the circuit structure of the emergency stop module of the traction equipment in an embodiment of this utility model;
[0037] Figure 3 This is a schematic diagram of the emergency stop control process of the traction equipment in an embodiment of this utility model;
[0038] Figure 4 This is a schematic diagram of the circuit structure of the 24VDC to 12VDC unit in an embodiment of the present invention.
[0039] Figure 5 This is a schematic diagram of the circuit structure of the 12VDC to 5VDC unit in an embodiment of this utility model.
[0040] Figure 6 This is a schematic diagram of the circuit structure of the 5VDC to 3VDC unit in an embodiment of this utility model. Detailed Implementation
[0041] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. The same reference numerals in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. The embodiments and specific features within the embodiments of this application are detailed descriptions of the technical solution of this application, and not limitations thereof. Where there is no conflict, the embodiments and technical features within the embodiments of this application can be combined with each other.
[0042] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the term "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.
[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0044] like Figure 1 As shown in the figure, this utility model embodiment provides a mechanical force monitoring device for cable installation in conduit. The device includes: a tensile force data acquisition module, a lateral pressure data acquisition module, a mechanical force data centralized receiving module, and a traction equipment emergency stop module.
[0045] The tensile data acquisition module is connected in series between the cable's traction steel wire rope and the cable terminal mesh sleeve;
[0046] The lateral pressure data acquisition module is set at the turning node of the cable laying path and is used to guide the cable turning pulley and collect the lateral pressure during cable construction.
[0047] The input terminal of the mechanical force data collection receiving module is connected to the output terminal of the tensile force data acquisition module and the output terminal of the lateral pressure data acquisition module, respectively.
[0048] The output of the mechanical force data centralized receiving module is connected to the input of the traction equipment emergency stop module;
[0049] The output terminal of the traction equipment emergency stop module is connected to the power supply port of the traction equipment of the cable.
[0050] The tensile data acquisition module includes a tensile sensor, a first analog-to-digital converter (ADC), a first microprocessor, a first RS485 unit, and a first power line carrier unit. The output of the tensile sensor is connected to the voltage input of the first ADC; the output of the first ADC is connected to the input of the first microprocessor; and the first power line carrier unit communicates with the first microprocessor via the first RS485 unit.
[0051] The tensile data acquisition module includes a tensile sensor, a first analog-to-digital converter (ADC), a first microprocessor, a first RS485 unit, and a first power line carrier unit. The output of the tensile sensor is connected to the voltage input of the first ADC; the output of the first ADC is connected to the input of the first microprocessor; and the first power line carrier unit communicates with the first microprocessor via the first RS485 unit.
[0052] In this embodiment, the tension sensor is an S-type tension sensor with a range of 0 to 10 tons, and lifting rings or flanges are set at both ends of the sensor to connect to the cable's traction wire rope and cable terminal mesh sleeve through the lifting rings or flanges.
[0053] The side pressure data acquisition module includes a side pressure sensor, a second analog-to-digital converter (ADC), a second microprocessor, a second RS485 unit, and a second power line carrier unit. The output terminal of the side pressure sensor is connected to the voltage input terminal of the second ADC; the output terminal of the second ADC is connected to the input terminal of the second microprocessor; the second power line carrier unit communicates with the second microprocessor through the second RS485 unit.
[0054] In this embodiment, a pin-type side pressure sensor is used, replacing the fixed shaft of the cable steering pulley. Therefore, the number of side pressure sensors can be set according to the number of steering pulleys. By using a pin-type side pressure sensor to replace the fixed shaft of the cable steering pulley, the pressure on the pulley can be accurately measured, and the side pressure component of cable construction can be analyzed in real time while maintaining the original guiding function of the pulley.
[0055] The mechanical force data centralized receiving module includes a third microprocessor, a third RS485 unit, and a third power line carrier unit. The input terminal of the traction equipment emergency stop module is connected to the output terminal of the third microprocessor; the third power line carrier unit is communicatively connected to the third microprocessor through the third RS485 unit; and the third power line carrier unit is connected to the first power line carrier unit and the second power line carrier unit through a carrier circuit.
[0056] In this embodiment, the first microprocessor of the tensile data acquisition module, the second microprocessor of the lateral pressure data acquisition module, and the third microprocessor of the mechanical force data centralized receiving module all adopt STM32 microprocessor chips.
[0057] In this embodiment, the first RS485 unit of the tensile data acquisition module, the second RS485 unit of the lateral pressure data acquisition module, and the third RS485 unit of the mechanical force data centralized receiving module all use the RSM3485PHT chip.
[0058] In this embodiment, the first power line carrier unit of the tensile data acquisition module, the second power line carrier unit of the lateral pressure data acquisition module, and the third power line carrier unit of the mechanical force data centralized receiving module all adopt the PD1380 broadband power line carrier from OSA Technology.
[0059] The traction equipment emergency stop module includes a bidirectional thyristor optocoupler driver and a bidirectional thyristor connected to the output terminal of the bidirectional thyristor optocoupler driver;
[0060] like Figure 2 As shown, in this embodiment, the bidirectional thyristor optocoupler driver is model MOC3061, and the bidirectional thyristor is model BTA100-1600. The input pin 1 of the bidirectional thyristor optocoupler driver is connected to 12VDC via a current-limiting resistor R1, pin 2 is connected to an external control signal, the output pin 4 is directly connected to the gate of the bidirectional thyristor, and is connected to the first main electrode T1 of the bidirectional thyristor via a trigger resistor R3. The output pin 6 is connected to the second main electrode T2 of the bidirectional thyristor via a trigger resistor R2. The first main electrode T1 of the bidirectional thyristor is connected to the neutral terminal (220V_N) of the 220V AC power supply, and the second main electrode T2 is connected to the controlled terminal of the traction power supply interface.
[0061] When the control signal input terminal receives a high-level signal, the driver automatically triggers at the zero-crossing point of the AC power supply and outputs the gate drive current through pin 6 to the bidirectional thyristor, causing it to enter the conduction state. When the control signal turns low, the bidirectional thyristor optocoupler driver stops outputting the trigger pulse at the zero-crossing point, causing the bidirectional thyristor to be cut off due to the disappearance of the gate current, thereby cutting off the 220V AC power supply circuit of the traction equipment.
[0062] like Figure 3 As shown, after the tension data acquisition module and the lateral pressure data acquisition module acquire mechanical force data, they send the data to the data central receiving module through the first power line carrier unit and the second power line carrier unit. If the data central receiving module detects that the mechanical force exceeds the predetermined threshold, the traction equipment emergency stop module drives the optocoupler through the MOC3061 thyristor to turn off the thyristor trigger signal at the zero crossing point, thereby cutting off the power supply of the cable traction equipment to avoid cable damage, until the mechanical force returns to normal (not exceeding the predetermined threshold).
[0063] In addition, the mechanical force monitoring device for cable construction in conduit of this utility model also includes a power module connected to the tensile force data acquisition module, the lateral pressure data acquisition module, the mechanical force data centralized receiving module, and the traction equipment emergency stop module.
[0064] In this embodiment, the power module is powered by a 24VDC battery.
[0065] The power module of this utility model is used to convert the 24V input voltage in stages to supply power to the devices in each module of the device. Therefore, the power module mainly includes a 24VDC to 12VDC unit, a 12VDC to 5VDC unit and a 5VDC to 3VDC unit connected in series.
[0066] In this embodiment, as Figure 4As shown, the 24VDC to 12VDC unit includes an XRE12 / 24S12W isolated power converter. The input pins 3 and 4 of the isolated power converter are connected to a 24VDC power supply via a filter network. The filter network consists of a 47uF / 50V electrolytic capacitor C3, a 106 ceramic capacitor C17, and a 104 ceramic capacitor C18 connected in parallel at the input terminals. Its output pins 1 and 2 output 12VDC via a filter circuit, which includes a 104 ceramic capacitor C31 and a 106 ceramic capacitor C32.
[0067] In this embodiment, as Figure 5 As shown, the 12VDC to 5VDC unit includes an XL1509 power converter. A 470uf aluminum electrolytic capacitor C6 and a 105 ceramic capacitor C5 are connected in parallel between pin 1 and ground to form an input filter network. Pin 2 is connected to a 180uf energy storage filter capacitor C4 via a 68uH power inductor L1. A diode D1 is connected across inductor L1 and ground GND to form a freewheeling protection circuit.
[0068] In this embodiment, as Figure 6 As shown, the 5VDC to 3VDC unit includes an AMS-1117 power converter, with a 104 filter capacitor C8 connected in parallel between its input pin 1 and ground, and a 104 filter capacitor C9 and a 22uf tantalum capacitor C10 connected in parallel between its output pins 2 and 4 and ground.
[0069] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the scope of protection of this disclosure / application.
Claims
1. A mechanical force monitoring device for cable installation in conduits, characterized in that, include: Tension data acquisition module, lateral pressure data acquisition module, mechanical force data centralized receiving module, and traction equipment emergency stop module; The tensile data acquisition module is connected in series between the cable's traction steel wire rope and the cable terminal mesh sleeve; The lateral pressure data acquisition module is set at the turning node of the cable laying path and is used to guide the cable turning pulley and collect the lateral pressure during cable construction. The input terminal of the mechanical force data collection receiving module is connected to the output terminal of the tensile force data acquisition module and the output terminal of the lateral pressure data acquisition module, respectively. The output of the mechanical force data centralized receiving module is connected to the input of the traction equipment emergency stop module; The output terminal of the traction equipment emergency stop module is connected to the power supply port of the traction equipment of the cable.
2. The mechanical force monitoring device for cable installation in conduit as described in claim 1, characterized in that, The tensile data acquisition module includes a tensile sensor, a first analog-to-digital converter, a first microprocessor, a first RS485 unit, and a first power line carrier unit; The output terminal of the tension sensor is connected to the voltage input terminal of the first analog-to-digital converter unit; The output terminal of the first analog-to-digital converter is connected to the input terminal of the first microprocessor; The first power line carrier unit is communicatively connected to the first microprocessor via the first RS485 unit; The side pressure data acquisition module includes a side pressure sensor, a second analog-to-digital converter, a second microprocessor, a second RS485 unit, and a second power line carrier unit; The output terminal of the side pressure sensor is connected to the voltage input terminal of the second analog-to-digital converter; The output of the second analog-to-digital converter is connected to the input of the second microprocessor; The second power line carrier unit is connected to the second microprocessor via the second RS485 unit.
3. The mechanical force monitoring device for cable installation in conduit as described in claim 2, characterized in that, The tensile sensor is an S-type tensile sensor with a range of 0 to 10 tons; The side pressure sensor is a pin-type side pressure sensor.
4. The mechanical force monitoring device for cable installation in conduit as described in claim 2, characterized in that, The mechanical force data centralized receiving module includes: a third microprocessor, a third RS485 unit, and a third power line carrier unit; The input terminal of the traction equipment emergency stop module is connected to the output terminal of the third microprocessor; The third power line carrier unit is communicatively connected to the third microprocessor via the third RS485 unit; The third power line carrier unit is connected to the first power line carrier unit and the second power line carrier unit via a carrier circuit.
5. The mechanical force monitoring device for cable installation in conduit as described in claim 4, characterized in that, The first, second, and third microprocessors all use STM32 microprocessor chips.
6. The mechanical force monitoring device for cable installation in conduit as described in claim 4, characterized in that, The first RS485 unit, the second RS485 unit, and the third RS485 unit all include an RSM3485PHT chip.
7. The mechanical force monitoring device for cable installation in conduit as described in claim 4, characterized in that, The first power line carrier unit, the second power line carrier unit, and the third power line carrier unit all include a PD1380 broadband power line carrier.
8. The mechanical force monitoring device for cable installation in conduit as described in claim 1, characterized in that, The traction equipment emergency stop module includes a bidirectional thyristor optocoupler driver and a bidirectional thyristor connected to the output terminal of the bidirectional thyristor optocoupler driver; The bidirectional thyristor optocoupler driver is model MOC3061; the bidirectional thyristor is model BTA100-1600.
9. The mechanical force monitoring device for cable installation in conduit as described in claim 1, characterized in that, It also includes a power module connected to the tensile data acquisition module, the lateral pressure data acquisition module, the mechanical force data centralized receiving module, and the traction equipment emergency stop module; The power module includes a 24VDC to 12VDC unit, a 12VDC to 5VDC unit, and a 5VDC to 3VDC unit connected in series.
10. The mechanical force monitoring device for cable installation in conduit as described in claim 9, characterized in that, The 24VDC to 12VDC unit includes an XRE12 / 24S12W isolated power converter; the 12VDC to 5VDC unit includes an XL1509 power converter; and the 5VDC to 3VDC unit includes an AMS-1117 power converter.