A far-end temperature acquisition device for skin effect heating cable

Abstract

The utility model discloses a kind of far-end temperature acquisition devices for skin effect heat tracing cable, including skin cable, the skin cable is arranged in oil pipeline stability system, still including the protection module of constituting conversion type protection circuit, the constant voltage module of constituting stable constant voltage circuit and the power supply module of constituting standby power supply circuit, protection module is arranged in the skin cable outside, constant voltage module is connected with protection module, power supply module is connected with constant voltage module, the beneficial effect of the utility model is equipped with protection module, high-voltage alternating current can be converted into low-voltage direct current to meet the power demand of constant voltage module, equipped with constant voltage module, it can be constant voltage charging for power supply module while power supply for wireless acquisition terminal, power supply module can be powered for wireless acquisition terminal when skin cable has no current, and its greatly reduces the power difficulty and complexity and cost of far-end signal transmission, power difficulty is small, conducive to popularization and use, constant voltage slow charging, prolongs battery life.

Description

Technical Field

[0001] This utility model relates to the technical field, and in particular to a remote temperature acquisition device for skin effect heat tracing cables. Background Technology

[0002] In existing technologies, pipeline skin effect electric heat tracing technology is a new technology for heating and insulating heat transmission pipelines in large petrochemical and other enterprises. The principle is mainly based on the "skin effect" and "proximity effect" of alternating current. It is often used in the temperature maintenance system of oil pipelines, ranging from hundreds of meters to tens of kilometers. Since there are usually no power sources at the far end of oil pipelines and there are limitations in signal line transmission, the current technology only collects temperature signals from the near end or at most a few hundred meters away. This is insufficient for controlling the temperature at the far end of the oil pipeline. Furthermore, the traditional wind and solar power supply methods are costly, have a high failure rate, and are inconvenient to maintain. Therefore, it is necessary to develop a simple and easy-to-use skin effect heat tracing cable far-end temperature acquisition device.

[0003] Chinese invention patent application number 202411081381.0 discloses a remote monitoring method and system for a skin effect electric heat tracing system based on big data. The system includes: a skin effect electric heat tracing system model construction module, a temperature control module, a temperature prediction module, and a monitoring platform and database establishment module. The skin effect electric heat tracing system model construction module is used to construct a skin effect electric heat tracing system model and optimize it using the fuzzy RBF neural network algorithm to obtain the optimal parameters. The temperature control module is used to adjust the heating power of the skin effect electric heat tracing system based on the output control quantity of the fuzzy RBF neural network model to achieve temperature control. The temperature prediction module is used to extract multi-scale time features and use a Bi-GRU neural network to achieve temperature prediction. The monitoring platform and database establishment module is used to establish a monitoring platform and database to achieve data monitoring and storage of the skin effect electric heat tracing system. However, the remote monitoring system of this skin effect electric heat tracing system based on big data is relatively complex, has high operating costs, and cumbersome monitoring methods. Furthermore, it relies on wind power, which has a high failure rate and risk, in conjunction with photovoltaic panels, which occupy a large area and have high operating costs, for power supply. This makes it difficult to obtain power for the remote signal, which is not conducive to its widespread use. Summary of the Invention

[0004] The purpose of this invention is to provide a remote temperature acquisition device for skin effect heat tracing cables.

[0005] To achieve the above objectives, the technical solution proposed by this utility model is as follows: A remote temperature acquisition device for skin effect heat tracing cable includes a skin effect cable arranged in an oil pipeline maintenance system. It also includes a protection module constituting a switching protection circuit, a constant voltage module constituting a stable constant voltage circuit, and a power supply module constituting a backup power supply circuit. The protection module is arranged outside the skin effect cable, the constant voltage module is connected to the protection module, and the power supply module is connected to the constant voltage module.

[0006] The protection module includes a current transformer and a rectifier bridge. The current transformer is sleeved on the outside of the skin cable. The first and second pins of the rectifier bridge are connected to the current transformer. The rectifier bridge and the current transformer form a conversion protection circuit structure.

[0007] The constant voltage module includes a temperature-voltage diode, a resistor, and a transistor. The input terminal of the temperature-voltage diode is connected to the output terminal of the rectifier bridge, the input terminal of the resistor is connected to the output terminal of the temperature-voltage diode, and the input terminal of the transistor is connected to the output terminal of the resistor. The two energy output terminals of the transistor are respectively connected to the input terminal of the rectifier bridge and the power supply module. The transistor, the resistor, and the temperature-voltage diode together constitute a constant voltage circuit structure.

[0008] The power supply module includes a battery, the positive terminal of which is connected to the thermoelectric diode and the transistor, respectively.

[0009] The battery is connected in parallel with the constant voltage circuit structure.

[0010] It also includes a wireless acquisition terminal, the input and output terminals of which are connected to the positive and negative terminals of the battery, respectively, and the wireless acquisition terminal is connected in parallel with the battery and the constant voltage circuit structure.

[0011] The wireless acquisition terminal is powered by a constant voltage circuit or the battery.

[0012] The wireless data acquisition terminal is a temperature data acquisition terminal.

[0013] The beneficial effects of this utility model are: Equipped with a protection module, it can convert high-voltage AC power to low-voltage DC power to meet the power requirements of the constant voltage module. The constant voltage module can simultaneously charge the power supply module at a constant voltage and power the wireless acquisition terminal. The power supply module can power the wireless acquisition terminal even when there is no current in the power cable. It greatly reduces the difficulty, complexity, and cost of powering remote signal transmission, eliminating the need for wind power with high failure rates and risks, as well as photovoltaic panels with large footprints and high costs. The ease of power acquisition facilitates its widespread use. It is a constant voltage slow charging method that extends battery life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] In the diagram: 1. Skin-on cable; 2. Current transformer; 3. Rectifier bridge; 4. Temperature and pressure diode; 5. Resistor; 6. Transistor; 7. Battery; 8. Wireless data acquisition terminal. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings. A remote temperature acquisition device for skin effect heat tracing cables includes a skin effect cable 1, which is arranged in an oil pipeline maintenance system. It also includes a protection module constituting a switching protection circuit, a constant voltage module constituting a stable constant voltage circuit, and a power supply module constituting a backup power supply circuit. The protection module is located outside the skin effect cable 1. The constant voltage module is connected to the protection module, and the power supply module is connected to the constant voltage module. A schematic diagram of the overall structure of this invention is shown below. Figure 1 As shown.

[0017] The protection module includes a current transformer 2 and a rectifier bridge 3. The current transformer 2 is sleeved on the outside of the skin cable 1. The first and second pins of the rectifier bridge 3 are connected to the current transformer 2. The rectifier bridge 3 and the current transformer 2 form a conversion protection circuit structure. The protection module converts high-voltage AC power into low-voltage DC power through the cooperation of the current transformer 2 and the rectifier bridge 3. The current transformer 2 is used to convert high-voltage large current into low-voltage small current proportionally to ensure safety monitoring and accurate metering. The rectifier bridge 3 is used to convert AC power into DC power.

[0018] The constant voltage module includes a temperature-voltage diode 4, a resistor 5, and a transistor 6. The input terminal of the temperature-voltage diode 4 is connected to the output terminal of the rectifier bridge 3, the input terminal of the resistor 5 is connected to the output terminal of the temperature-voltage diode 4, and the input terminal of the transistor 6 is connected to the output terminal of the resistor 5. The two energy output terminals of the transistor 6 are connected to the input terminal of the rectifier bridge 3 and the power supply module, respectively. The transistor 6, the resistor 5, and the temperature-voltage diode 4 together form a constant voltage circuit structure. The constant voltage module, through the cooperation of the temperature-voltage diode 4, the resistor 5, and the transistor 6, forms a constant voltage circuit to charge the battery 7 at a constant voltage and simultaneously power the wireless acquisition terminal 8. The temperature-voltage diode 4 is used to convert temperature changes into voltage signals and offset the influence of temperature on voltage through built-in circuitry to achieve stable output. The resistor 5 is used to limit current to protect the circuit, and the transistor 6 is used to ensure that the circuit is in a regulated state.

[0019] The power supply module includes a battery 7. The positive and negative terminals of the battery 7 are connected to the thermoelectric diode 4 and the transistor 6, respectively. The battery 7 is connected in parallel with the constant voltage circuit structure. The battery 7 is used as a backup power supply structure for the wireless acquisition terminal 8 to supply power to the wireless acquisition terminal 8 when there is no current in the skin cable 1.

[0020] It also includes a wireless acquisition terminal 8, whose input and output terminals are connected to the positive and negative terminals of the battery 7, respectively. The wireless acquisition terminal 8, the battery 7, and the constant voltage circuit are connected in parallel. The wireless acquisition terminal 8 is powered by the constant voltage circuit or the battery 7. The wireless acquisition terminal 8 is a temperature acquisition terminal, which is used to acquire remote temperature by being powered by the temperature and pressure circuit or the battery 7.

[0021] In the attached diagram, DL represents skin cable 1, L represents current transformer 2, T1 represents rectifier bridge 3, Z1 represents temperature and pressure diode 4, R1 represents resistor 5, Q1 represents transistor 6, and BAT1 represents battery 7.

[0022] Working principle: During operation, when there is current in the Jifu cable 1, the current transformer 2 and the rectifier bridge 3 convert the high-voltage AC power into low-voltage DC power. Together with the temperature and pressure diode 4, resistor 5 and transistor 6, they form a constant voltage circuit, which charges the battery 7 at a constant voltage while supplying power to the wireless acquisition terminal 8. When there is no current in the Jifu cable 1, the battery 7 supplies power to the wireless acquisition terminal 8, and the wireless acquisition terminal 8 can then collect the temperature at a remote location.

[0023] The beneficial effects of this utility model are that it is equipped with a protection module that can convert high-voltage AC power into low-voltage DC power to meet the power requirements of the constant voltage module. The constant voltage module can provide power to the wireless acquisition terminal while charging the power supply module at a constant voltage. The power supply module can provide power to the wireless acquisition terminal when there is no current in the cable. Furthermore, it greatly reduces the difficulty, complexity, and cost of obtaining power for remote signal transmission. It eliminates the need for wind power, which has a high failure rate and risk, as well as photovoltaic panels, which occupy a large area and have high costs. The power acquisition difficulty is small, which is conducive to its widespread use. It is a constant voltage slow charging method that extends battery life.

[0024] The above description details one embodiment of the present utility model, but it is merely a preferred embodiment and should not be construed as limiting the scope of the present utility model. All equivalent variations and improvements made within the scope of the present utility model application should still fall within the patent coverage of the present utility model.

Claims

1. A remote temperature acquisition device for a skin effect heat tracing cable, comprising a skin effect cable (1), wherein the skin effect cable (1) is arranged in an oil pipeline stabilization system, characterized in that, It also includes a protection module constituting a switching protection circuit, a constant voltage module constituting a stable constant voltage circuit, and a power supply module constituting a backup power supply circuit. The protection module is arranged outside the skin cable (1), the constant voltage module is connected to the protection module, and the power supply module is connected to the constant voltage module. The protection module includes a current transformer (2) and a rectifier bridge (3). The current transformer (2) is sleeved on the outside of the skin cable (1). The first and second pins of the rectifier bridge (3) are connected to the current transformer (2). The rectifier bridge (3) and the current transformer (2) constitute a conversion protection circuit structure. The constant voltage module includes a temperature-pressure diode (4), a resistor (5), and a transistor (6). The input terminal of the temperature-pressure diode (4) is connected to the output terminal of the rectifier bridge (3). The input terminal of the resistor (5) is connected to the output terminal of the temperature-pressure diode (4). The input terminal of the transistor (6) is connected to the output terminal of the resistor (5). The two energy output terminals of the transistor (6) are respectively connected to the input terminal of the rectifier bridge (3) and the power supply module. The transistor (6), the resistor (5), and the temperature-pressure diode (4) together constitute a constant voltage circuit structure. The power supply module includes a battery (7), the positive terminal and the negative terminal of the battery (7) are respectively connected to the thermo-pressure diode (4) and the transistor (6).

2. The remote temperature acquisition device for skin effect heat tracing cable as described in claim 1, characterized in that, The battery (7) is connected in parallel with the constant voltage circuit structure.

3. The remote temperature acquisition device for skin effect heat tracing cable as described in claim 2, characterized in that, It also includes a wireless acquisition terminal (8), the input terminal and the output terminal of the wireless acquisition terminal (8) are respectively connected to the positive terminal and the negative terminal of the battery (7), and the wireless acquisition terminal (8) is connected in parallel with the battery (7) and the constant voltage circuit structure.

4. The remote temperature acquisition device for skin effect heat tracing cable as described in claim 3, characterized in that, The wireless acquisition terminal (8) is powered by a constant voltage circuit or the battery (7).

5. The remote temperature acquisition device for skin effect heat tracing cable as described in claim 4, characterized in that, The wireless acquisition terminal (8) is a temperature acquisition terminal.

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