Heat tracing control system

Abstract

The utility model provides a heat tracing control system, which relates to the technical field of heat tracing, and comprises an electric heat tracing belt, an alternating current contactor and a control unit, and the electric heat tracing belt is configured to be arranged on a pipeline; wherein at least two electric tracing bands form an electric tracing band group, at least two electric tracing bands in the same electric tracing band group are configured to be arranged in a surrounding mode in the circumferential direction of the pipeline, the at least two electric tracing bands are evenly distributed on the pipeline, and the electric tracing band groups correspond to the alternating current contactors in a one-to-one mode. The alternating current contactor comprises a plurality of main contacts and auxiliary contacts, in the same heat tracing band group, each electric heat tracing band is electrically connected with one main contact, and the auxiliary contacts are electrically connected with the control unit. According to the utility model, the heating uniformity and the heat tracing precision of the heat tracing control system can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat tracing, in particular to a heat tracing control system. Background Art

[0002] Existing heat tracing control systems primarily use electric heating cables for pipe insulation and antifreeze protection, ensuring a stable temperature for the fluid within the pipe. These cables typically operate independently, heating at a fixed temperature or power level to prevent freezing or maintain fluidity.

[0003] However, electric heating cables are usually configured separately, which makes it difficult to meet the needs of actual complex scenarios. In addition, the layout of traditional electric heating cables is usually set linearly or arranged on one side of the pipeline, which can easily lead to local temperature unevenness in the pipeline, thereby affecting the overall heating effect. Utility Model Content

[0004] The problem solved by the utility model is how to improve the heating uniformity and heating accuracy of a heating control system.

[0005] In order to solve the above problems at least to a certain extent, the present invention provides a heat tracing control system, comprising an electric heat tracing tape, an AC contactor and a control unit, wherein the electric heat tracing tape is configured to be arranged on a pipeline;

[0006] Among them, at least two of the electric heating tapes constitute an electric heating tape group, and at least two of the electric heating tapes in the same electric heating tape group are configured to be arranged around the circumference of the pipeline, and at least two of the electric heating tapes are evenly distributed on the pipeline. The electric heating tape group corresponds to the AC contactor one by one, and the AC contactor includes a plurality of main contacts and auxiliary contacts. Each of the electric heating tapes in the same electric heating tape group is electrically connected to one of the main contacts, and the other main contact of the AC contactor is used to connect to a power supply, and the auxiliary contact is electrically connected to the control unit.

[0007] Optionally, it further includes an insulation shell, which is used to be set on the surface of the pipeline, and the insulation shell is provided with a receiving groove for receiving the electric heating tape.

[0008] Optionally, the electric heating tape is a self-limiting temperature heating tape.

[0009] Optionally, it also includes multiple temperature sensors and a bus-type temperature patrol meter, the temperature sensors are configured to be set on the pipeline, the input end of the bus-type temperature patrol meter is electrically connected to the multiple temperature sensors, and the output end of the bus-type temperature patrol meter is communicatively connected to the control unit.

[0010] Optionally, it further includes a water storage tank, a water seal tank, and an electric heater arranged around the water storage tank or the water seal tank, and the electric heater is electrically connected to the control unit.

[0011] Optionally, it further includes an ambient temperature sensor arranged on the water storage tank and the water seal tank, and the ambient temperature sensor is electrically connected to the bus-type temperature patrol meter.

[0012] Optionally, a mobile terminal is further included, and the mobile terminal is communicatively connected to the control unit.

[0013] Optionally, the control unit includes a wireless communication component, and the control unit is communicatively connected to the mobile terminal via the wireless communication component.

[0014] Optionally, an alarm unit is further included, and the alarm unit is electrically connected to the control unit.

[0015] Optionally, an overload protection unit is further included, and the overload protection unit is electrically connected to the AC contactor.

[0016] Compared to existing technologies, the heating control system of the present invention optimizes the heating effect of the pipeline by combining multiple electric heating cables into an electric heating cable group and evenly distributing them along the circumference of the pipeline, thereby ensuring uniform heat transfer in all directions of the pipeline. This avoids the problem of localized excessively high or low temperatures caused by uneven distribution of heating cables in traditional systems, thereby improving temperature control accuracy and heating effect. At the same time, the electric heating cable group corresponds one-to-one with the AC contactor, and each electric heating cable is connected to the power supply via a main contact and an auxiliary contact is electrically connected to the control unit. This allows the heating control system to control the electric heating cable group in real time, quickly adjusting the working status of multiple electric heating cables when needed, achieving more refined heat control, and effectively improving the temperature regulation efficiency of the pipeline. The present invention can improve the heating uniformity and heating accuracy of the heating control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a heat tracing control system according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic structural diagram of a heat tracing control system according to another embodiment of the present invention.

[0019] Description of reference numerals:

[0020] 1-Electric heating cable; 2-Temperature sensor; 3-AC contactor; 4-Control unit; 5-Mobile terminal; 6-Electric heating cable group; 7-Bus-type temperature inspection instrument; 8-Electric heater; 9-Ambient temperature sensor. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] To solve the above problems, refer to Figure 1 The utility model provides an electric heating tape 1, an AC contactor 3 and a control unit 4. The electric heating tape 1 is configured to be arranged on a pipeline.

[0024] It should be noted that the heat tracing control system in this embodiment is primarily used to provide heat tracing and temperature control for equipment and pipelines within a factory. The pipelines can be used to transport coal gas or natural gas. The electric heating cable 1 installed on the pipelines is used to heat the pipelines to prevent them from freezing due to low ambient temperatures.

[0025] Among them, at least two of the electric heating tapes 1 form an electric heating tape group 6, and at least two of the electric heating tapes 1 in the same electric heating tape group 6 are configured to be arranged around the circumference of the pipeline, and at least two of the electric heating tapes 1 are evenly distributed on the pipeline. The electric heating tape group 6 corresponds one-to-one to the AC contactor 3, and the AC contactor 3 includes a plurality of main contacts and auxiliary contacts. In the same electric heating tape group 6, each of the electric heating tapes 1 is electrically connected to one of the main contacts, and the auxiliary contacts are electrically connected to the control unit 4.

[0026] At least two electric heating tapes 1 form an electric heating tape group 6, which is intended to uniformly manage multiple electric heating tapes 1 to enhance the flexibility and responsiveness of the heating control system. At least two of the electric heating tapes 1 in the same electric heating tape group 6 are configured to be arranged around the circumference of the pipeline, which means that each electric heating tape 1 is arranged around the circumference of the pipeline so that the fluid flowing through the pipeline can be evenly heated. Generally, the distribution quantity and distribution density of the electric heating tapes 1 can be determined according to the diameter and length of the pipeline to ensure the temperature control effect of the entire pipeline area. At least two electric heating tapes 1 are evenly distributed on the pipeline to ensure that there is appropriate heating coverage in all areas of the pipeline. In order to make the heating effect of the electric heating tape more uniform, the electric heating tapes 1 are evenly spaced along the circumferential direction on the outer surface of the pipeline. The uniform distribution of the electric heating tapes 1 can ensure that the heating effect will not affect the fluidity or temperature stability of the fluid in the pipeline due to local overheating or overcooling.

[0027] Specifically, the main contact of the AC contactor 3 is a normally open contact. When the auxiliary contact of the AC contactor 3 receives an electrical signal, the coil of the AC contactor 3 is attracted, so that the main contact is closed, and the power supply is used to supply power to the electric heating tape.

[0028] In this embodiment, each set of heating cables 1 is connected to a corresponding AC contactor 3, enabling centralized control of the heating cables 1. The AC contactor 3 has multiple main contacts and auxiliary contacts. Each heating cable 1 is electrically connected to a main contact in the AC contactor 3, forming an independent heating circuit that switches the power on and off. The auxiliary contacts are electrically connected to a control unit 4, which receives control signals and transmits status information. The control unit 4 flexibly controls the on / off operation of the heating cables 1 based on received signals and pre-set rules.

[0029] Compared to the existing technology, the heating control system of the present invention optimizes the heating effect of the pipeline by combining multiple electric heating cables 1 into an electric heating cable group 6 and evenly distributing them along the circumference of the pipeline, thereby ensuring uniform heat transfer in all directions of the pipeline. This avoids the problem of localized excessively high or low temperatures caused by uneven arrangement of the electric heating cables 1 in traditional systems, thereby improving temperature control accuracy and heating effect. At the same time, the electric heating cable group 6 corresponds one-to-one with the AC contactor 3, and each electric heating cable 1 is connected to the power supply via a main contact, and the auxiliary contact is electrically connected to the control unit 4, allowing the heating control system to control the electric heating cable group 6 in real time, quickly adjusting the working status of multiple electric heating cables 1 when needed, achieving more refined heat control, and effectively improving the temperature regulation efficiency of the pipeline. The present invention can improve the heating uniformity and heating accuracy of the heating control system.

[0030] Preferably, it further comprises an insulation shell, which is used to be arranged on the surface of the pipeline, and the insulation shell is provided with a receiving groove for receiving the electric heating tape 1.

[0031] The insulation shell provided on the surface of the pipeline can reduce heat loss in the pipeline, and the provision of a receiving groove in the insulation shell can ensure that the electric heating cable 1 fits tightly around the pipeline, improving the heat transfer effect of the electric heating cable 1. On the other hand, placing the electric heating cable 1 in the receiving groove of the insulation shell can protect and fix the electric heating cable 1, thereby extending the service life of the electric heating cable 1.

[0032] Furthermore, the heat-insulating shell is provided with a closing cover plate that matches the receiving groove and is used to close the receiving groove after the electric heating cable 1 is placed in the receiving groove. The closing cover plate can reduce the heat loss of the electric heating cable 1.

[0033] In one embodiment, the electric heating tape 1 is a self-limiting temperature heating tape.

[0034] Self-limiting temperature heating tape refers to an electric heating tape with self-regulating heating characteristics. It can automatically adjust the heating power according to the changes in the ambient temperature to prevent the transport medium in the pipeline from freezing due to low temperature and maintain the required temperature, thereby achieving the effect of intelligent insulation and energy saving.

[0035] Reference Figure 2 The heating control system also includes multiple temperature sensors 2 and a bus-type temperature patrol meter 7. The temperature sensor 2 is configured to be set on the pipeline. The input end of the bus-type temperature patrol meter 7 is electrically connected to the multiple temperature sensors 2, and the output end of the bus-type temperature patrol meter 7 is communicatively connected to the control unit 4.

[0036] The temperature sensor 2 can monitor the temperature of the pipeline in real time to obtain temperature monitoring data, thereby providing a data basis for the remote control and intelligent control of the electric heating tape 1. The bus-type temperature patrol meter 7 is a temperature detection device that can connect multiple temperature sensors 2 at the same time. It is responsible for collecting temperature data from multiple temperature sensors 2 and transmitting it to the control unit 4. The processing unit built into the bus-type temperature patrol meter 7 processes and analyzes the received temperature data to ensure the accuracy and reliability of the temperature data. The output end of the bus-type temperature patrol meter 7 is communicatively connected to the control unit 4 and can transmit the processed temperature data to the control unit 4. The control unit 4 performs real-time monitoring and judgment based on the received temperature data to decide whether to start and stop the working state of the electric heating tape 1. This embodiment connects multiple temperature sensors 2 and the control unit 4 through the bus-type temperature patrol meter 7, so that the control unit 4 can perform intelligent control of the electric heating tape 1, which can improve the response speed and accuracy of the heating control system.

[0037] Furthermore, during actual operation of the heating control system, when temperature sensor 2 detects that the pipe temperature is below a set threshold, control unit 4 sends an "on" command to AC contactor 3, causing heating cable 1 in the corresponding heating cable group 6 to begin cooperatively heating the pipe. Once the pipe temperature rises to a predetermined range, control unit 4 issues an "off" command, causing AC contactor 3 to cut off power to the corresponding heating cable group 6, and the corresponding heating cable 1 stops operating, thus achieving efficient and energy-saving intelligent heating control.

[0038] In one embodiment, the system further includes a water storage tank, a water seal tank, and an electric heater 8 arranged around the water storage tank or the water seal tank, wherein the electric heater 8 is electrically connected to the control unit 4 .

[0039] In this embodiment, the water storage tank and water seal tank of the heating control system are both used to store liquid media in industrial systems, such as water or other chemical liquids. The electric heater 8 arranged around the water storage tank or water seal tank is used to heat the air under low temperature conditions to prevent the liquid in the water storage tank and water seal tank from freezing. The electric heater 8 is electrically connected to the control unit 4, so that the control unit 4 can control the switch and operating status of the electric heater 8, and the control unit 4 is in turn connected to the mobile terminal 5 for communication. Such a configuration allows the staff to remotely control the opening and closing of the electric heater 8 according to actual needs. This embodiment can effectively prevent the freezing of liquid in the water storage tank and water seal tank in a low temperature environment, effectively improving the practicality of the heating control system.

[0040] Furthermore, the heat tracing control system further includes an ambient temperature sensor 9 arranged on the water storage tank and the water seal tank, and the ambient temperature sensor 9 is electrically connected to the bus-type temperature patrol meter 7 .

[0041] In this embodiment, the ambient temperature of the water tank and the water seal tank can be monitored by the ambient temperature sensor 9 arranged on the water tank and the water seal tank, and then the ambient temperature data is transmitted to the control unit 4 through the bus-type temperature patrol meter 7. The control unit 4 can use the ambient temperature data to optimize the operation of the electric heater 8, for example: automatically adjust the heating intensity and heating cycle of the electric heater 8 according to the changes in the ambient temperature.

[0042] In one embodiment, a mobile terminal 5 is further included, and the mobile terminal 5 is communicatively connected to the control unit 4 .

[0043] It should be explained that the mobile terminal 5 here can be a smart phone or a tablet computer, etc. The mobile terminal 5 is connected to the control unit 4 via a wireless network, so that the staff can view the temperature data of the pipeline in real time and adjust the settings of the heating control system.

[0044] In one embodiment, the control unit 4 includes a wireless communication component, and the control unit 4 is communicatively connected to the mobile terminal 5 via the wireless communication component.

[0045] It should be noted that the control unit 4 has an integrated wireless communication component, which enables the control unit 4 to transmit real-time operating status data to the mobile terminal 5 via wireless signals and simultaneously receive control instructions from the mobile terminal 5. This embodiment, through the arrangement of the wireless communication component, can enhance the convenience and flexibility of the heat tracing control system, facilitating the user to effectively monitor and manage the heat tracing control system.

[0046] In one embodiment, an alarm unit is further included, and the alarm unit is electrically connected to the control unit 4.

[0047] Specifically, the alarm unit receives alarm signals from the control unit 4, such as temperature anomalies, equipment failure signals, or system abnormality signals. The control unit 4 can determine whether the heating control system is operating normally based on data from the temperature sensor 2 and the heating cable 1. The control unit 4 can preset various alarm conditions, such as temperature exceeding a set threshold, heating cable 1 operating abnormally, or communication failures. Once any of these conditions are triggered, the control unit 4 immediately sends an alarm signal to the alarm unit. This embodiment effectively improves the safety and reliability of the heating control system.

[0048] Preferably, the temperature sensor 2 is a PT100 temperature sensor 2.

[0049] In one embodiment, an overload protection unit is further included, and the overload protection unit is electrically connected to the AC contactor 3 .

[0050] The overload protection unit in this embodiment is used to prevent the electric heating cable 1 from being damaged due to current overload, thereby ensuring the stability and safety of the heating control system.

[0051] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A heat tracing control system, characterized in that: The invention comprises an electric heating tape (1), an AC contactor (3) and a control unit (4), wherein the electric heating tape (1) is configured to be arranged on a pipeline; At least two of the electric heating tapes (1) form an electric heating tape group (6), and at least two of the electric heating tapes (1) in the same electric heating tape group (6) are configured to be arranged around the circumference of the pipeline, and at least two of the electric heating tapes (1) are evenly distributed on the pipeline. The electric heating tape group (6) corresponds to the AC contactor (3) one by one, and the AC contactor (3) includes a main contact and an auxiliary contact. Each of the electric heating tapes (1) in the same electric heating tape group (6) is electrically connected to one of the main contacts, and the other main contact of the AC contactor (3) is used to connect to a power supply, and the auxiliary contact is electrically connected to the control unit (4).

2. The heat tracing control system according to claim 1, characterized in that: It also includes a heat-insulating shell, which is used to be arranged on the surface of the pipeline, and the heat-insulating shell is provided with a receiving groove for receiving the electric heating tape (1).

3. The heat tracing control system according to claim 1, characterized in that: The electric heating tape (1) is a self-limiting temperature heating tape.

4. The heat tracing control system according to claim 1, characterized in that: It also includes a plurality of temperature sensors (2) and a bus-type temperature patrol meter (7), wherein the temperature sensors (2) are configured to be arranged on the pipeline, the input end of the bus-type temperature patrol meter (7) is electrically connected to the plurality of temperature sensors (2), and the output end of the bus-type temperature patrol meter (7) is communicatively connected to the control unit (4).

5. The heat tracing control system according to claim 4, characterized in that: It also includes a water storage tank, a water seal tank, and an electric heater (8) arranged around the water storage tank or the water seal tank, wherein the electric heater (8) is electrically connected to the control unit (4).

6. The heat tracing control system according to claim 5, characterized in that: It also includes an environmental temperature sensor (9) arranged on the water storage tank and the water seal tank, and the environmental temperature sensor (9) is electrically connected to the bus-type temperature patrol meter (7).

7. The heat tracing control system according to claim 1, characterized in that: It also includes a mobile terminal (5), which is communicatively connected to the control unit (4).

8. The heat tracing control system according to claim 7, characterized in that: The control unit (4) includes a wireless communication component, and the control unit (4) is communicatively connected with the mobile terminal (5) via the wireless communication component.

9. The heat tracing control system according to claim 1, characterized in that: It also includes an alarm unit, which is electrically connected to the control unit (4).

10. The heat tracing control system according to claim 1, wherein: It also includes an overload protection unit, which is electrically connected to the AC contactor (3).

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