A hot spot detection and early warning system for oil field steam pipelines

Abstract

The utility model discloses a hot spot detection and early warning system for oilfield steam pipelines, including a system control host, a fire alarm system and a plurality of temperature collectors, wherein the system control host is respectively connected to the fire alarm system and the plurality of temperature collectors, and each of the temperature collectors is also respectively connected to a plurality of thermocouple temperature measuring cables, and each of the thermocouple temperature measuring cables is laid in a straight line on the surface of a corresponding oilfield steam pipeline. The utility model uses thermocouple temperature measuring cables to continuously monitor the temperature changes of each oilfield steam pipeline, thereby ensuring the comprehensiveness and accuracy of temperature monitoring, simplifying the installation process, and reducing production costs.

Description

Technical Field

[0001] The utility model relates to the technical field of oil field safety, in particular to a hot spot detection and early warning system for an oil field steam pipeline. Background Art

[0002] Oilfield steam pipelines are important facilities widely used in the industrial and energy fields. They carry high-temperature, high-pressure steam to provide energy for production and supply. However, oilfield steam pipelines are exposed to high temperature and high pressure environments for a long time, and are prone to fatigue, corrosion and aging, which leads to a decrease in the strength of the pipeline and an increase in the risk of leakage. Steam is likely to overflow through seepage and leakage. Steam leakage is one of the potential safety hazards of oilfield steam pipelines. Steam usually exists under high pressure, and its temperature and pressure have huge energy. Minor leakage leads to energy loss and personnel safety accidents. Large amounts of steam leakage, due to its high temperature and high energy characteristics, can easily cause objects to burn, leading to fires and even explosions, thus causing major safety accidents. Therefore, it is necessary to strengthen the safety monitoring of oilfield steam pipelines and take necessary safety measures to ensure the safe operation of equipment.

[0003] Traditional hotspot detection and early warning systems usually use temperature sensor arrays to monitor the temperature of oilfield steam pipelines. However, in order to effectively monitor the temperature changes of the entire oilfield steam pipeline, multiple temperature sensors need to be installed on each steam pipeline to form an array. This not only complicates the installation process, but also greatly increases the production cost of the system. For example, for a large oil field, hundreds or thousands of temperature sensors may be required, which will lead to a significant increase in hardware and maintenance costs. In addition, although most areas can be covered by temperature sensor arrays, there are still potential monitoring blind spots. Especially in the gaps between sensors or at pipe bends, due to the limitations of the sensor layout, the temperature changes may not be accurately monitored, thereby increasing the risk of fire. Utility Model Content

[0004] In order to overcome the problems of complex installation, high production cost and monitoring blind spots in the prior art for monitoring the temperature of oil field steam pipelines, the utility model provides a hot spot detection and early warning system for oil field steam pipelines.

[0005] The technical solution of the utility model is as follows:

[0006] A hotspot detection and early warning system for an oilfield steam pipeline comprises a system control host, a fire alarm system and a plurality of temperature collectors, wherein the system control host is respectively connected to the fire alarm system and the plurality of temperature collectors, and each of the temperature collectors is also respectively connected to a plurality of thermocouple-type temperature measuring cables, and each of the thermocouple-type temperature measuring cables is laid in a straight line on the surface of a corresponding oilfield steam pipeline.

[0007] As a preferred solution of the utility model, every three or every four adjacent thermocouple temperature measuring cables are connected to one temperature collector.

[0008] As a preferred solution of the utility model, the signal output end of each of the thermocouple temperature measuring cables is connected to the signal input end of a corresponding one of the temperature collectors through a compensation wire.

[0009] As a preferred solution of the utility model, the signal output end of each of the thermocouple temperature measuring cables is connected to the corresponding compensation wire through an explosion-proof junction box.

[0010] As a preferred solution of the utility model, each of the temperature collectors is provided with an explosion-proof casing.

[0011] As a preferred solution of the present utility model, each of the temperature collectors is provided with a display screen.

[0012] As a preferred solution of the present invention, each of the temperature collectors is provided with a first RS485 transceiver, and the system control host is provided with a second RS485 transceiver, and the second RS485 transceiver is connected and communicated with the first RS485 transceiver.

[0013] As a preferred solution of the utility model, each of the thermocouple temperature measuring cables is provided with a fixing piece at a certain interval to fix it on the surface of a corresponding oilfield steam pipeline.

[0014] As a preferred solution of the utility model, the fixing piece is a stainless steel cable tie.

[0015] As a preferred solution of the present invention, it also includes a cloud server and a production safety information management system, and the production safety information management system is connected to the system control host and the cloud server respectively.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. By laying thermocouple temperature measuring cables on the surface of each oil field steam pipeline, the temperature changes of all oil field steam pipelines can be continuously monitored, ensuring the comprehensiveness and accuracy of temperature monitoring;

[0018] 2. Compared with the traditional temperature sensor array solution, the use of thermocouple temperature measurement cables simplifies the installation process, reduces production costs, and has no monitoring blind spots;

[0019] 3. By setting up a temperature collector, the continuous thermocouple signal output by the thermocouple temperature measuring cable can be collected in real time, and according to the preset alarm temperature threshold, it can be determined whether to output a dry contact alarm signal to the fire alarm system; when the temperature reaches or exceeds the threshold, the system can quickly issue an early warning, allowing users to discover problems in time and take timely measures to avoid accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a system framework diagram of an embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the installation of a thermocouple temperature measuring cable in one embodiment of the utility model;

[0023] Figure 3 This is a system framework diagram of another embodiment of the utility model.

[0024] In the figure,

[0025] 1. System control host; 2. Fire alarm system; 3. Temperature collector; 4. Thermocouple temperature measurement cable; 5. Oil field steam pipeline; 6. Fixings; 7. Cloud server; 8. Production safety information management system. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, it is stated that the embodiments described below are only used to explain the utility model and are not used to limit the utility model.

[0027] It should be noted that the terms "install", "set", "connect", "fix" and the like should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. The indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the application product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art, or the orientation or position relationship in which the application product is usually placed when in use, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first" and "second" are only used for the purpose of convenience of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly defined. "Several" means one or more, unless otherwise clearly defined.

[0028] See also Figure 1 , Figure 2 The present embodiment provides a hotspot detection and early warning system for an oilfield steam pipeline, comprising a system control host 1, a fire alarm system 2 and a plurality of temperature collectors 3, wherein the system control host 1 is respectively connected to the fire alarm system 2 and the plurality of temperature collectors 3, and each temperature collector 3 is also respectively connected to a plurality of thermocouple temperature measuring cables 4, and each thermocouple temperature measuring cable 4 is laid in a straight line on the surface of a corresponding oilfield steam pipeline 5.

[0029] When working, the temperature collector 3 collects the continuous thermocouple signal (i.e., temperature data) output by the connected thermocouple temperature measuring cable 4 in real time, and determines whether to output a dry contact alarm signal to the fire alarm system 2 according to the preset alarm temperature threshold, and transmits the temperature data to the system control host 1 in real time, so that the system control host 1 can centrally monitor and access remotely. When the temperature collector 3 detects that the collected temperature value reaches the alarm temperature threshold, it outputs a dry contact alarm signal to the fire alarm system 2, thereby realizing the early warning function.

[0030] It should be noted that the thermocouple type temperature measuring cable 4 used in the utility model is also called a "continuous" thermocouple or a "heat-seeking" thermocouple, which can continuously generate a millivolt signal corresponding to the highest temperature within the range of its length and can be cut according to the actual application needs. The thermocouple type temperature measuring cable 4 uses the principle of thermoelectric effect to continuously generate a millivolt signal corresponding to the highest temperature within the range of its length. The thermoelectric effect was discovered by German scientist Seebeck in 1821. Conductors A and B of two different materials are welded end to end to form a closed loop. When there is a temperature difference between the two welding points of conductors A and B, a thermoelectric potential is generated between the two. This phenomenon is called the thermoelectric effect. The size of the thermoelectric potential is only related to the temperature of the junctions at both ends of the conductor. Ordinary point thermocouples work on this principle. The difference between the thermocouple type temperature measuring cable 4 and ordinary thermocouples is that its hot junction is not fixed, but always corresponds to the highest temperature point on the detector.

[0031] When the temperature of any point (T1) on the thermocouple temperature measuring cable 4 is higher than the temperature of other parts, the insulation resistance (R) between the thermocouple wires at that location decreases, resulting in a "temporary" hot junction, which has the same function as the hot junction of an ordinary point thermocouple. When the temperature of another point (T2) on the cable is higher than point T1, the insulation resistance between the thermocouple wires at that location will be lower than the resistance of point T1, resulting in a new "temporary" hot junction. Similarly, its signal always corresponds to the highest temperature along the line. The thermocouple temperature measuring cable 4 always outputs a temperature signal corresponding to the highest temperature in the laid area. It has superior temperature measurement performance, can effectively sense subtle changes in temperature along the temperature measuring cable, and has excellent ability to capture hot spots.

[0032] The hot spot detection and early warning system for the above-mentioned oilfield steam pipeline can continuously monitor the temperature changes of all oilfield steam pipelines 5 by laying thermocouple temperature measuring cables 4 on the surface of each oilfield steam pipeline 5, thereby ensuring the comprehensiveness and accuracy of temperature monitoring; compared with the traditional temperature sensor array solution, the use of thermocouple temperature measuring cables 4 simplifies the installation process, while also reducing production costs, and there is no monitoring blind spot; by setting up a temperature collector 3, the continuous thermocouple signal output by the thermocouple temperature measuring cable 4 can be collected in real time, and according to the preset alarm temperature threshold, it can be determined whether to output a dry contact alarm signal to the fire alarm system 2; when the temperature reaches or exceeds the threshold, the system can quickly issue an early warning, allowing users to discover problems in time and take measures in time to avoid accidents.

[0033] In one embodiment, every three or every four adjacent thermocouple temperature measuring cables 4 are connected to a temperature collector 3. By connecting multiple thermocouple temperature measuring cables 4 to the same temperature collector 3, the number of temperature collectors 3 can be reduced, thereby reducing the overall cost of the system. In addition, reducing the number of temperature collectors 3 also means reducing the number of installation points, thereby simplifying the installation process. At the same time, in the subsequent maintenance process, the number of equipment that needs to be managed and maintained is reduced, reducing the complexity and cost of maintenance. Although the number of temperature collectors 3 is reduced, since the thermocouple temperature measuring cables 4 are laid on the surface of the oilfield steam pipeline 5 in a straight line, the temperature changes of all oilfield steam pipelines 5 can be continuously monitored, so the overall monitoring capability of the system is not reduced. In addition, since the number of hardware components is reduced, the potential points of failure are also reduced accordingly, thereby improving the reliability of the system.

[0034] In one embodiment, the signal output end of each thermocouple temperature measuring cable 4 is connected to the signal input end of a corresponding temperature collector 3 through a compensation wire. The compensation wire is used to transmit the signal output by the connected thermocouple temperature measuring cable 4 to the corresponding temperature collector 3. Since there is a certain distance between the thermocouple temperature measuring cable 4 and the temperature collector 3, the use of the compensation wire to connect the thermocouple temperature measuring cable 4 and the temperature collector 3 can save the use of the thermocouple temperature measuring cable 4, thereby reducing the production cost.

[0035] In one embodiment, the signal output end of each thermocouple temperature measuring cable 4 is connected to the corresponding compensation wire through an explosion-proof junction box. In an inflammable and explosive environment, the explosion-proof junction box can prevent explosion accidents caused by electrical sparks or high temperatures, thereby making the connection between the thermocouple temperature measuring cable 4 and the compensation wire more stable and reliable.

[0036] In one embodiment, each temperature collector 3 is provided with an explosion-proof housing. Since the environment of the oil field steam pipeline 5 usually contains high temperature, high pressure and flammable substances, these factors increase the risk of fire and explosion. The explosion-proof housing can protect the temperature collector 3 from direct impact of the external environment and shock waves generated by the explosion, ensuring its safe operation in extreme environments.

[0037] In one embodiment, each temperature collector 3 is provided with a display screen. By equipping each temperature collector 3 with a display screen, the staff can directly view the highest temperature monitored by each thermocouple type temperature measuring cable 4 in real time on site through the display screen, so that the staff can instantly understand the temperature conditions of each oil field steam pipeline 5.

[0038] In one embodiment, each temperature collector 3 is provided with a first RS485 transceiver, and the system control host 1 is provided with a second RS485 transceiver, and the second RS485 transceiver is connected to the first RS485 transceiver for communication 1 to realize data transmission between the temperature collector 3 and the system control host 1. By using the RS485 transceiver to establish a communication connection between the temperature collector 3 and the system control host 1, not only the reliability of the system and the quality of data transmission are improved, but also the flexibility and maintainability of the system are increased, so that the system can more effectively monitor the temperature of the oilfield steam pipeline 5, and timely discover and respond to abnormal situations, thereby ensuring the safe and stable operation of the oilfield steam pipeline 5.

[0039] See also Figure 2 In one embodiment, each thermocouple type temperature measuring cable 4 is provided with a fixing part 6 at a certain distance (such as 1.5 to 2m) to fix it on the surface of a corresponding oilfield steam pipeline 5. The fixing part 6 ensures that the thermocouple type temperature measuring cable 4 can fit tightly on the surface of the oilfield steam pipeline 5 and will not be displaced or fall off due to the influence of the external environment (such as wind, vibration, etc.), so as to ensure that it can stably and accurately monitor the temperature change of the pipeline. Preferably, the fixing part 6 is a stainless steel cable tie. The stainless steel cable tie adopts a simple buckle design, which is easy to install and disassemble, and is convenient for maintenance personnel to carry out daily inspections and maintenance work. At the same time, the stainless steel material has excellent corrosion resistance and can be used for a long time in the high temperature, high humidity and high corrosion environment of the oilfield steam pipeline 5 without being damaged.

[0040] See also Figure 3 In one embodiment, the hotspot detection and early warning system of the oilfield steam pipeline also includes a cloud server 7 and a safe production information management system 8, and the safe production information management system 8 is connected to the system control host 1 and the cloud server 7 respectively. Among them, the safe production information management system 8 is connected and communicated with the cloud server 7 by wireless means, and the wireless means includes at least one of NB-IOT, LoRa or 5G. The cloud server 7 is used to provide data storage, processing and remote access capabilities to ensure the security and accessibility of data. The safe production information management system 8 is responsible for collecting, monitoring and analyzing various data in the production process, and is connected to the system control host 1 and the cloud server 7 to realize centralized management and remote monitoring of data.

[0041] By introducing cloud servers7 and production safety information management systems8, and adopting wireless communication technologies such as NB-IOT, LoRa or 5G, the hotspot detection and early warning system of oilfield steam pipelines has achieved intelligent, information-based and remote management capabilities. This comprehensive solution not only improves the accuracy of early warnings, but also reduces operating costs, providing a strong guarantee for the safe operation of oilfield steam pipelines5.

[0042] It should be noted that since the system control host 1, fire alarm system 2, cloud server 7 and production safety information management system 8 are technologies well known to those skilled in the art, the utility model does not elaborate on describing their specific structures and working principles.

[0043] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0044] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A hot spot detection and early warning system for oil field steam pipelines, characterized in that: It includes a system control host, a fire alarm system and several temperature collectors. The system control host is connected to the fire alarm system and several temperature collectors respectively. Each temperature collector is also connected to several thermocouple temperature measuring cables respectively. Each thermocouple temperature measuring cable is laid in a straight line on the surface of a corresponding oil field steam pipeline.

2. The hot spot detection and early warning system for oil field steam pipeline according to claim 1 is characterized in that: Every three or every four adjacent thermocouple temperature measuring cables are connected to one temperature collector.

3. The hot spot detection and early warning system for oil field steam pipeline according to claim 1 is characterized in that: The signal output end of each of the thermocouple temperature measuring cables is connected to the signal input end of a corresponding temperature collector through a compensation wire.

4. The hot spot detection and early warning system for oil field steam pipeline according to claim 3 is characterized in that: The signal output end of each of the thermocouple temperature measuring cables is connected to the corresponding compensation wire through an explosion-proof junction box.

5. The hot spot detection and early warning system for oil field steam pipeline according to claim 1 is characterized in that: Each of the temperature collectors is provided with an explosion-proof casing.

6. The hot spot detection and early warning system for oil field steam pipeline according to claim 1 is characterized in that: Each of the temperature collectors is provided with a display screen.

7. The hot spot detection and early warning system for oil field steam pipeline according to claim 1 is characterized in that: Each of the temperature collectors is provided with a first RS485 transceiver, and the system control host is provided with a second RS485 transceiver, and the second RS485 transceiver is connected and communicated with the first RS485 transceiver.

8. The hot spot detection and early warning system for oil field steam pipeline according to claim 1 is characterized in that: Each of the thermocouple temperature measuring cables is provided with a fixing piece at a certain interval to fix it on the surface of a corresponding oilfield steam pipeline.

9. The hot spot detection and early warning system for oil field steam pipeline according to claim 8, characterized in that: The fixing piece is a stainless steel cable tie.

10. The hot spot detection and early warning system for oil field steam pipeline according to claim 1, characterized in that: It also includes a cloud server and a production safety information management system, and the production safety information management system is connected to the system control host and the cloud server respectively.

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