Preheating device of oil field well cementation cement truck

By designing a series circuit built by heater and heat dissipation pipe on cement cement trucks in oilfield, comprehensive preheating of key components such as engines, fuel tanks, and batteries has been achieved, solving the limitations of local preheating in the existing technology, and improving the The starting performance and life of the equipment in extremely cold environments and optimizes the operating efficiency.

CN222254184UActive Publication Date: 2024-12-27AKSU ZHONGMAN PETROLEUM ENG TECH CO LTD +1
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Patent Information

Application Number
CN202420990240.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-09
Publication Date
2024-12-27
Estimated Expiration
2034-05-09

AI Technical Summary

Technical Problem

The existing technology has local preheating limitations when preheating cementing cement trucks in oil fields, and it is impossible to fully and efficiently preheat key components such as engines, fuel tanks, and batteries, resulting in difficulty in starting in extremely cold environments, increasing wear and equipment life. shorten.

Method used

A preheating device for cementing cement truck in oil field was designed, and a series circuit was constructed through a heater and a heat dissipation pipe. The heat-released water guide key components were heat exchanged and preheated, including heaters, heat dissipation pipes, hoses, The circulation pump, temperature sensor and controller ensure comprehensive preheating of the engine, fuel tank, battery and other parts.

Benefits of technology

It improves the starting performance of the equipment under extremely cold conditions, reduces starting wear, extends the service life of the equipment, optimizes the operating efficiency, and achieves energy saving and consumption reduction.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The embodiment of the utility model belongs to the technical field of vehicle preheating, and particularly relates to a preheating device of an oil field well cementation cement truck. The preheating device of the oil field well cementation cement truck comprises a heater, a radiating pipe and a hose. The heater is provided with a water inlet and a water outlet, the water inlet and the water outlet are connected with the engine water tank and the radiating pipes through hoses respectively, and the radiating pipes are arranged at the proper positions of the bottom of the diesel tank, the bottom of the hydraulic oil tank, the bottom of the lubricating oil tank, the surface of the storage battery, the main engine cylinder body and the auxiliary engine cylinder body and connected with the engine water tank through hoses. A series loop is formed; water in the water tank is firstly heated by the heater in the series loop, and then heat is transferred to a to-be-preheated part through the heat dissipation pipe, so that heat exchange between the water and the preheating part is carried out. According to the preheating device of the oil field well cementation cement truck, comprehensive and efficient preheating of key components of the oil field well cementation cement truck is achieved, it is guaranteed that the oil field well cementation cement truck is smoothly started under the extremely cold condition, and the service life of equipment is prolonged.
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Description

Technical Field

[0001] The embodiments of the present application relate to the field of vehicle preheating technology, and in particular to a preheating device for an oilfield cementing truck. Background Art

[0002] Under extremely cold climate conditions, the normal operation of cementing trucks for oil fields faces severe challenges. Specifically, the waxy components of diesel are prone to crystallization, resulting in a significant reduction in fuel fluidity; at the same time, the lubrication and hydraulic transmission efficiency of lubricating oil and hydraulic oil are greatly weakened due to the sharp increase in viscosity at low temperatures; in addition, the ion exchange activity of battery electrolytes in low temperature environments decreases significantly, and the battery output power drops sharply. The combined effect of the above factors makes it extremely difficult to start the engine in extremely cold conditions, and in severe cases it cannot even be started. In view of this, the development and application of a set of preheating device technology for oil field cementing trucks is of vital importance to ensure the smooth start of equipment in extreme low temperature environments, reduce starting loads and wear, extend equipment life, and improve operating efficiency.

[0003] In real life, the severe test of the starting performance of oilfield cementing trucks in extreme cold environments is mainly dealt with by installing engine preheating devices, battery heating devices, and fuel system insulation and heating devices. Engine preheating devices, such as glow plugs and hot water circulation preheaters, preheat key parts such as the engine cylinder, coolant, and intake system to reduce friction resistance and cold start wear during starting, thereby increasing the success rate of engine starting at low temperatures. Battery heating devices, such as battery heating pads and glow plugs, directly heat the battery externally or internally to heat the electrolyte, thereby increasing the battery's discharge capacity at low temperatures and ensuring sufficient starting current. Fuel system insulation and heating devices prevent diesel from waxing at low temperatures by installing insulation materials or equipping fuel heaters in diesel tanks, fuel filters, and oil pipelines, etc., to maintain good fuel fluidity and ensure the normal operation of the fuel supply system.

[0004] However, these traditional technologies have limitations in practical applications. For example, the engine preheating device often only heats the engine locally and fails to effectively preheat other key components such as the fuel tank and battery. The battery heating device can only improve the battery performance and has no direct impact on other systems. The fuel system insulation and heating device mainly solves the problem of fuel fluidity and has limited effect on the overall preheating of the equipment.

[0005] Therefore, how to design a more comprehensive and efficient preheating solution is a technical problem that urgently needs to be solved. Utility Model Content

[0006] The purpose of the embodiments of the present application is to provide a preheating device for an oilfield cementing truck, which solves the problem of local preheating limitations in the traditional technology when preheating an oilfield cementing truck.

[0007] To achieve the above-mentioned purpose, an embodiment of the present application provides a preheating device for an oilfield cementing truck. The preheating device for an oilfield cementing truck includes a heater, a heat dissipation pipe, and a hose. The heater is provided with a water inlet and a water outlet, and the water inlet and the water outlet are respectively connected to the engine water tank and the heat dissipation pipe through a hose. The heat dissipation pipe is arranged at appropriate positions at the bottom of the diesel tank, the bottom of the hydraulic oil tank, the bottom of the lubricating oil tank, the surface of the battery, the main engine cylinder body, and the auxiliary engine cylinder body, and is connected to the engine water tank through a hose to form a series circuit; the water in the water tank is first heated by the heater in the series circuit, and then the heat is transferred to the component to be preheated through the heat dissipation pipe, so as to perform heat exchange between the water and the preheated component.

[0008] The preheating device for oilfield cementing trucks provided in the embodiment of the present application heats water through a heater, and uses a series circuit constructed by a hose to guide the heated water to the heat pipes arranged around key components, such as the diesel tank, hydraulic oil tank, the bottom of the lubricating oil tank and the engine cylinder, for heat exchange preheating. This design ensures that the vehicle can fully and efficiently preheat multiple key parts such as the engine, fuel tank, battery and engine cylinder under extremely cold conditions, effectively improving low-temperature starting performance, reducing wear during starting, extending the service life of the equipment, and optimizing operating efficiency.

[0009] In some embodiments, a circulation pump is further included, which is arranged upstream of the water inlet of the engine water tank. The water that dissipates heat through the heat dissipation pipe is transported back to the engine water tank through the circulation pump to form a closed circulation heating loop.

[0010] In some embodiments, a temperature sensor is further included. The temperature sensor is disposed in the engine water tank, the heater, and the radiator pipe to monitor the water temperature in real time.

[0011] In some embodiments, a temperature sensor is further disposed inside the component to be preheated, for real-time monitoring of the actual temperature of the component to be preheated.

[0012] In some embodiments, a controller is further included, and the controller is communicatively connected with the heater, the circulation pump, and the temperature sensor to monitor the temperature of the preheating device and automatically control the heater.

[0013] In some embodiments, the heater is further provided with a heating element and a heat exchange device.

[0014] In some embodiments, the heater is powered by an external power supply with a supply voltage of 220V.

[0015] In some embodiments, the heat dissipation pipe is made of copper material and has a spiral tube structure.

[0016] In some embodiments, the hose is made of a high temperature resistant, oil resistant, and corrosion resistant material, and the outside of the hose is wrapped with an insulation layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0018] Figure 1 It is a schematic cross-sectional structure diagram of a preheating device for an oilfield cementing truck provided in some embodiments of the present application;

[0019] Description of reference numerals:

[0020] 11-heater; 111-water inlet; 112-water outlet; 12-hydraulic oil tank; 13-diesel tank; 14-lubricating oil tank; 15-battery; 16-auxiliary engine; 17-main engine; 18-heat pipe; 19-hose. DETAILED DESCRIPTION

[0021] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, each embodiment of the present application will be described in detail below in conjunction with the accompanying drawings. However, it will be appreciated by those skilled in the art that in each embodiment of the present application, many technical details are proposed in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can also be implemented. The division of the following embodiments is for the convenience of description, and the specific implementation of the present application should not constitute any limitation, and the various embodiments can be combined with each other and referenced to each other without contradiction.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0023] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0024] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0025] In the existing technology, the starting performance of the equipment under low temperature conditions is mainly improved by installing engine preheating devices, battery heating devices, and fuel system insulation and heating devices. Specifically, the engine preheating device injects heat into the cylinder or uses coolant circulation to heat key parts to reduce friction resistance and cold start wear during starting, thereby improving the success rate of engine starting at low temperatures. The battery heating device directly heats the battery externally or internally to heat the electrolyte to improve the battery's discharge capacity at low temperatures and ensure sufficient starting current. The fuel system insulation and heating device installs insulation materials or equips fuel heaters in the diesel tank, fuel filter, oil pipeline, etc. to prevent diesel from waxing, maintain fuel fluidity, and ensure the normal operation of the fuel supply system.

[0026] However, these methods have significant disadvantages. These traditional technologies mainly preheat specific parts such as the engine, battery and fuel system, and fail to form a systematic and comprehensive preheating of the entire equipment. This may cause some parts that are not preheated or insufficiently preheated to still face low temperature problems during startup, affecting the overall startup performance and equipment life. At the same time, each independent preheating device usually works independently, which may cause uneven energy distribution and fail to accurately and efficiently distribute heat energy according to the actual needs of each component. For example, overheating a certain part may lead to energy waste, while other key parts may not be preheated enough. Installing multiple sets of independent preheating devices means higher equipment costs, installation difficulties and subsequent maintenance workload. Each device may require an independent power supply, control circuit and insulation measures, which increases the complexity of the system and the risk of failure.

[0027] In order to achieve comprehensive and accurate preheating of key parts of oilfield cementing trucks, some embodiments of the present application provide a preheating device for oilfield cementing trucks, which includes accessories such as a heater, a heat pipe, a hose, a circulation pump, a temperature sensor, and a controller. The heater heats the water in the engine water tank with the help of an external power supply. The copper spiral heat pipe is arranged in the key components and forms a circulation loop through the hose. The circulation pump ensures the circulation of water, the temperature sensor monitors the water temperature, and the controller adjusts the heating and circulation status accordingly to ensure accurate preheating of each part. This device comprehensively and accurately preheats key components, ensures smooth startup of equipment at low temperatures, reduces startup wear, and extends equipment life, while achieving energy conservation and consumption reduction and improving operating efficiency.

[0028] In order to better understand the technical solution and technical effects of the present application, a specific embodiment of the paint defect detection device will be described in detail below with reference to the accompanying drawings.

[0029] like Figure 1 As shown, the preheating device of the oilfield cementing truck provided by some embodiments of the present application includes a heater 11, a heat pipe 18, and a hose 19. The heater 11 is provided with a water inlet 111 and a water outlet 112, and the water inlet 111 and the water outlet 112 are respectively connected to the engine water tank and the heat pipe 18 through the hose 19. The heat pipe 18 is arranged at the bottom of the diesel tank 13, the bottom of the hydraulic oil tank 12, the bottom of the lubricating oil tank 14, the surface of the battery 15, the cylinder body of the main engine 17 and the cylinder body of the auxiliary engine 16, and is connected to the engine water tank through the hose 19 to form a series circuit; the water in the water tank is first heated by the heater 11 in the series circuit, and then the heat is transferred to the component to be preheated through the heat pipe 18, so as to perform heat exchange between the water and the preheated component.

[0030] Specifically, the heater 11 is equipped with a water inlet 111 and a water outlet 112, which are connected to the engine water tank and a specially designed heat dissipation pipe 18 respectively by means of a hose 19. The heat dissipation pipe 18 covers important parts of the vehicle, such as the diesel tank 13, the hydraulic oil tank 12, the bottom of the lubricating oil tank 14, and the key areas of the surface of the battery 15, the cylinder body of the main engine 17 and the cylinder body of the auxiliary engine 16, all of which form a series loop with the engine water tank through the hose 19, thereby creating a continuous heat exchange loop.

[0031] In terms of working principle, when the device is in operation, the water in the water tank is introduced into the heater 11 through the hose 19. After being heated inside the heater 11, the water carries the increased heat energy and flows to the heat pipe 18 again through the hose 19. The heat pipe 18 acts as a bridge for heat transfer, evenly and effectively distributing the heat carried by the heated water to the preset preheating components, such as the diesel tank 13, the hydraulic system, the lubrication system, the battery 15 and the engine body, to achieve efficient heat exchange between the water and these components.

[0032] The oilfield cementing truck preheating device provided in some embodiments of the present application effectively solves the problem of difficulty in starting the cementing truck in an extremely cold environment through a comprehensive and efficient preheating design, improves the equipment startup success rate, reduces startup wear, and extends the equipment service life.

[0033] In some embodiments of the present application, a circulation pump is further included, which is arranged upstream of the water inlet of the engine water tank. The water that dissipates heat through the heat dissipation pipe 18 is transported back to the engine water tank through the circulation pump to form a closed circulation heating loop.

[0034] The preheating device integrates a circulating pump, which is arranged at the upstream position of the water inlet of the engine water tank. It is tightly connected to the heater 11, the heat pipe 18 and the engine water tank through the hose 19 to form a closed circulation heating loop. The circulating pump ensures that the heated water can smoothly return to the engine water tank along the hose 19 after completing the heat dissipation task, and is reheated and enters the next cycle. This design has significant advantages: first, the active driving action of the circulating pump enhances the efficient transfer of heat energy. It overcomes the inefficiency problem that may exist in natural circulation, ensures that the heated water can be quickly and evenly distributed to each heat pipe 18, and accurately and effectively heats the key parts such as the diesel tank 13, the hydraulic oil tank 12, the lubricating oil tank 14, the battery 15, the main engine 17 cylinder body and the auxiliary engine 16 cylinder body, significantly improving the preheating efficiency. Secondly, by constructing a closed circulation loop, the device realizes efficient utilization of thermal energy and energy saving and consumption reduction. The heated water will not be lost after the heat is dissipated, but will be driven by the circulation pump to flow back to the water tank for reheating, which minimizes heat loss and reduces energy consumption, meeting the requirements of modern equipment for energy saving and environmental protection. Finally, the stable circulation system ensures the continuity and consistency of the preheating effect of each key part. Regardless of how the ambient temperature changes, the circulation pump can ensure that the heated water continuously provides the appropriate preheating temperature for each component, enhances the startup performance of the equipment under extremely cold conditions, reduces startup wear, and extends the service life of the equipment.

[0035] In some embodiments of the present application, a temperature sensor is also included. The temperature sensor is arranged in the engine water tank, the heater 11 and the heat dissipation pipe 18, and is used to monitor the water temperature in real time.

[0036] The temperature sensor is arranged inside the engine water tank. The temperature sensor located inside the water tank can capture and feedback the change of the original temperature of the water in real time. Inside the heater 11, the temperature sensor is close to the heat source, and monitors the subtle changes of the water body due to heat rise in real time to ensure that the heat output is accurately controllable and avoid overheating. In the layout of each heat pipe 18, these sensors are not limited to a certain section, but are distributed at the beginning, process and end of the heat pipe 18 close to the preheating component, covering all directions, closely monitoring the changes of heat at every stage of the flow, and accurately evaluating the heat transfer efficiency and preheating effect. In some embodiments of the present application, the temperature sensor is also arranged inside the component to be preheated, for real-time monitoring of the actual temperature of the component to be preheated.

[0037] By implanting temperature sensors into core areas of key components such as the diesel tank 13, hydraulic oil tank 12, lubricating oil tank 14, battery 15 and engine block, the system can sense the actual temperature changes of these components during the preheating process in real time and accurately.

[0038] In some embodiments of the present application, a controller is further included, and the controller is communicatively connected with the heater 11, the circulation pump and the temperature sensor to monitor the temperature of the preheating device and automatically control the heater 11.

[0039] When the water temperature and the actual temperature data of the preheated parts monitored in real time by the temperature sensor are transmitted to the controller through the communication interface, the advanced algorithm inside the controller immediately processes and analyzes these data quickly. By continuously comparing the current temperature with the preset target temperature, the controller can accurately judge the strength of the heating demand. If the monitoring data shows that the current temperature is lower than the set value, the controller will automatically send instructions to the heater 11 to adjust its working mode or increase the power output to accelerate the heating process until the preset temperature threshold is reached. On the contrary, if the temperature has met or is about to exceed the target temperature, the controller will reduce the power of the heater 11 in a timely manner, or even temporarily turn off the heating function to maintain temperature stability, prevent overheating and save energy.

[0040] In addition, the controller flexibly adjusts the working speed of the circulation pump according to the system circulation status fed back by the circulation pump to ensure maximum heat transfer efficiency while maintaining temperature balance in the entire circulation system.

[0041] In some embodiments of the present application, the heater 11 is further provided with a heating element and a heat exchange device.

[0042] The heating element in this device generates heat by consuming electricity to heat the low-temperature water to a preset temperature. The heat exchange device is a heat transfer platform, which efficiently transfers the heat generated by the heating element to the water flowing through the heat dissipation pipe 18, so that this part of the medium can bring heat to various parts to be preheated, such as the engine block, fuel tank, etc.

[0043] In some embodiments of the present application, the heater 11 is powered by an external power supply with a power supply voltage of 220V.

[0044] The external power supply mode gives the preheating device an independent way to obtain energy, so that it can operate normally and provide a stable heating effect without relying on the cementing truck's own power system. In this way, even in special circumstances such as insufficient battery power or difficulty in starting the vehicle, the preheating device can still play an effective role, ensuring the preheating of key parts, improving the success rate of vehicle starting, and ensuring the continuity and stability of operations.

[0045] In some embodiments of the present application, the heat dissipation pipe 18 is made of copper material and has a spiral tubular structure.

[0046] The heat pipe 18 is made of high-quality copper material. This material is selected based on its excellent thermal conductivity and durability, ensuring efficient heat transfer and long-term stability. At the same time, the heat pipe 18 is designed as a spiral tube structure, which not only increases the surface area of ​​the heat pipe 18, but also greatly improves the heat exchange efficiency with the surrounding environment or the components to be preheated.

[0047] In some embodiments of the present application, the hose 19 is made of a high temperature resistant, oil resistant, and corrosion resistant material, and the outside of the hose 19 is wrapped with a thermal insulation layer.

[0048] Firstly, the high temperature resistant material ensures that the hose 19 can maintain good performance and structural stability when in long term contact with high temperature water or heat medium, thus avoiding deformation or damage of the hose 19 due to high temperature; secondly, the oil resistance and corrosion resistance properties enable it to remain uncorroded when in contact with oily substances such as lubricating oil and diesel, thus extending its service life; finally, the thermal insulation layer wrapped around the outside of the hose 19 can effectively reduce the loss of heat during the transmission process, improve thermal efficiency, and ensure that the preheating device can more efficiently transfer heat to each component to be preheated.

[0049] As a possible implementation method, in addition to water, the liquid in the engine water tank can also be a specially designed antifreeze. Antifreeze is a mixture that usually contains water, ethylene glycol or other types of antifreeze, as well as ingredients such as corrosion inhibitors and anti-foaming additives. Compared with pure water, antifreeze has a lower freezing point and can remain in a liquid state at lower temperatures to prevent freezing; at the same time, its boiling point is also higher than water, which can prevent excessive evaporation at high temperatures. In addition, antifreeze also has good anti-rust and anti-corrosion properties, which can effectively protect the metal parts inside the engine cooling system from corrosion. Therefore, in extremely cold environments, using antifreeze instead of or mixed in water as the circulating medium of the preheating device can not only ensure the preheating effect, but also enhance the durability and stability of the cooling system.

[0050] As a possible implementation, the heater 11 is provided with an overheat protection function, which can automatically cut off the power supply to prevent damage when the temperature exceeds the preset safety limit. Specifically, a heat-sensitive element is connected in series with the power line of the heater 11. Once the temperature is too high, the element will disconnect the circuit due to the melting of its internal material, thereby instantly cutting off the power supply and preventing overheating.

[0051] In some embodiments, the mounting structure of the preheating device is designed to be detachable, so as to facilitate the maintenance and replacement of various components and adapt to oilfield cementing trucks of different models and specifications. The core idea is to use modular components and flexible connection mechanisms. Specifically, first, important components such as the heater 11, the water inlet 111, the circulating pump, the sensor and the controller are designed as independent modular units, which are assembled and disassembled using quick-plug interfaces, flanges or other convenient connection methods, ensuring that the equipment is easy to operate and quick to operate when it needs maintenance, replacement or layout adjustment according to different vehicle models. In addition, the wires and signal lines also use easy-to-disassemble quick connectors, which not only ensures the stability of the electrical connection, but also simplifies the disassembly and assembly process. Where the preheating device is installed in contact with vehicle components, such as the engine block, fuel tank, etc., threaded fasteners, clamps or magnetic fixing structures are used to ensure firmness while being easy to disassemble and reposition.

[0052] The above is only a preferred embodiment of the present application and does not constitute any formal limitation to the present application. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present application using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present application, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of protection of the technical solution of the present application.

Claims

1. A preheating device for an oilfield cementing truck, characterized in that: It includes a heater, a radiator pipe and a hose. The heater is provided with a water inlet and a water outlet. The water inlet and the water outlet are respectively connected to the engine water tank and the radiator pipe through the hose. The radiator pipe is arranged at the bottom of the diesel tank, the bottom of the hydraulic oil tank, the bottom of the lubricating oil tank, the surface of the battery, the main engine cylinder body and the auxiliary engine cylinder body. The radiator pipe is connected to the engine water tank through the hose to form a series circuit. The water in the water tank is first heated by the heater in the series circuit, and then the heat is transferred to the component to be preheated through the radiator pipe, so as to perform heat exchange between the water and the preheating component.

2. The preheating device for an oilfield cementing truck according to claim 1, characterized in that: It also includes a circulation pump, which is arranged upstream of the water inlet of the engine water tank. The water that dissipates heat through the radiator pipe is transported back to the engine water tank through the circulation pump to form a closed circulation heating loop.

3. The preheating device for an oilfield cementing truck according to claim 2, characterized in that: It also includes a temperature sensor, which is arranged in the engine water tank, the heater and the radiator pipe, and is used to monitor the temperature of the water in real time.

4. The preheating device for oilfield cementing truck according to claim 3 is characterized in that: The temperature sensor is also arranged inside the component to be preheated, and is used to monitor the actual temperature of the component to be preheated in real time.

5. The preheating device for an oilfield cementing truck according to claim 4, characterized in that: It also includes a controller, which is in communication with the heater, the circulation pump and the temperature sensor to monitor the temperature of the preheating device and automatically control the heater.

6. The preheating device for oilfield cementing truck according to claim 1, characterized in that: The heater is also provided with a heating element and a heat exchange device.

7. The preheating device for an oilfield cementing truck according to claim 6, characterized in that: The heater is powered by an external power supply with a supply voltage of 220V.

8. The preheating device for oilfield cementing truck according to claim 1, characterized in that: The heat dissipation pipe is made of copper material and adopts a spiral tube structure.

9. The preheating device for an oilfield cementing truck according to claim 1, characterized in that: The hose is made of high temperature resistant, oil resistant and corrosion resistant material, and the outside of the hose is wrapped with thermal insulation.