A non-contact automatic temperature control heating device for diesel water pump oil tank

Abstract

This utility model discloses a non-contact automatic temperature control heating device for a diesel water pump oil tank. It includes an oil tank with a suspended heating rod positioned below it. A radiation shield with an opening at the top radiates heat to the bottom of the oil tank. A temperature sensor is installed on the oil tank to detect the oil temperature. The temperature sensor and the suspended heating rod are controlled by a PLC controller. This utility model significantly improves temperature control accuracy through fully automatic start-stop control. Furthermore, the redundant control architecture of "dual sensors + PLC" enhances the reliability and safety of the equipment, solving the problem of potential equipment damage caused by traditional installation methods. It ensures both ease of installation and safe operation.

Description

Technical Field

[0001] This utility model relates to the technical field of diesel engine maintenance equipment, and in particular to a non-contact automatic temperature control heating device for the oil tank of a diesel water pump. Background Technology

[0002] In low-temperature environments (<0℃), diesel water pumps face serious oil lubrication problems during normal operation. Excessively low oil temperature leads to increased oil viscosity, affecting lubrication effectiveness, and consequently accelerating equipment wear and reducing service life.

[0003] Therefore, the oil tank of the diesel water pump is heated. Currently, diesel water pump oil heating devices on the market mainly have the following technical defects: 1. They require manual observation of temperature and manual start-up and shutdown, resulting in operational lag. Operators may easily forget to turn off the heating device, leading to energy waste; 2. Immersion-type temperature-controlled heating rods require damage to the oil tank structure and alteration of the water pump housing, posing a risk of seal failure; 3. Attached heating plates rely on close contact, and in actual installation, uneven surfaces often lead to a significant decrease in thermal efficiency; 4. They lack precise fully automatic closed-loop temperature control, failing to achieve instant start-up at low temperatures and automatic stop-up upon reaching the target temperature. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model designs a non-contact automatic temperature control heating device for the oil tank of a diesel water pump.

[0005] The present invention adopts the following technical solution: A non-contact automatic temperature control heating device for a diesel water pump oil tank includes an oil tank. A suspended heating rod is installed below the oil tank, and a radiation shield is installed below the suspended heating rod. The radiation shield has an opening at the top, radiating heat towards the bottom of the oil tank. A temperature sensor is installed on the oil tank to detect the oil temperature inside. The temperature sensor and the suspended heating rod are controlled by a PLC controller. The industrial-grade PLC controller has the following characteristics: start threshold: adjustable from 10℃ to 0℃; stop threshold: adjustable from 20℃ to 30℃; temperature sampling frequency: once per 10 seconds.

[0006] Preferably, the temperature sensor adopts a dual-sensor redundancy detection mechanism consisting of a PT1000 contact probe and an infrared non-contact sensor.

[0007] Preferably, the suspended heating rod is a suspended ceramic heating rod.

[0008] Preferably, the radiation shield is made of 304 stainless steel.

[0009] Preferably, the suspended heating rod is positioned 20±5cm from the bottom of the oil reservoir.

[0010] The beneficial effects of this utility model are: (1) Reduced installation and maintenance costs. Its non-contact design requires no modification to the original equipment structure, ensuring convenient installation and reducing maintenance costs, making the overall user experience more efficient and economical; (2) Extended equipment lifespan. After rigorous bench testing, this design can reduce cold start wear by 76%, significantly extending the equipment's lifespan; (3) Outstanding energy-saving effect. Compared with the traditional normally open heating scheme, this design can save approximately 3,200 yuan in electricity costs per unit per year (calculated based on 1.5kW power and 8 hours of operation per day), significantly reducing operating costs; (4) Reduced safety risks. This utility model greatly reduces the risk of overheating accidents caused by human negligence. At the same time, the adoption of a dual-sensor redundancy design further enhances the system's reliability and fault tolerance, ensuring stable equipment operation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is the PLC control flowchart of this utility model; In the diagram: 1. Oil reservoir, 2. Suspended ceramic heating rod, 3. 304 stainless steel radiant cover, 4. PT1000 contact probe, 5. Infrared non-contact sensor. Detailed Implementation

[0012] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings: Example: Figure 1 As shown, a non-contact automatic temperature control heating device for a diesel water pump oil tank includes an oil tank 1. A suspended heating rod is installed below the oil tank, and a radiation shield is installed below the suspended heating rod. The radiation shield has an opening at the top, which radiates heat to the bottom of the oil tank. A temperature sensor is installed on the oil tank to detect the oil temperature inside the oil tank. The temperature sensor and the suspended heating rod are connected and controlled by a PLC controller.

[0013] The temperature sensor adopts a dual-sensor redundancy detection mechanism, consisting of a PT1000 contact probe 4 (for detecting oil tank wall temperature) and an infrared non-contact sensor 5 (for auxiliary verification).

[0014] The suspended heating rod is a suspended ceramic heating rod 2. The radiant cover is a 304 stainless steel radiant cover 3 (heat reflection efficiency ≥85%). The suspended heating rod is 20±5cm from the bottom of the oil tank.

[0015] like Figure 2As shown, when this utility model is in use, the heating device is turned on, the temperature sensor detects the oil temperature in the oil tank and feeds it back to the PLC controller. When the oil temperature is ≤ the set threshold (e.g., 10℃), the PLC controller controls the suspended ceramic heating rod to start heating automatically. When the temperature is ≥ the safe value (e.g., 28℃), the PLC controller controls the suspended ceramic heating rod to stop working automatically. The whole process does not require manual intervention.

[0016] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A non-contact automatic temperature control heating device for a diesel water pump oil tank, comprising an oil tank, characterized in that, A suspended heating rod is installed below the oil tank, and a radiation shield is installed below the suspended heating rod. The radiation shield has an opening at the top and radiates heat to the bottom of the oil tank. A temperature sensor is installed on the oil tank to detect the oil temperature inside the oil tank. The temperature sensor and the suspended heating rod are connected and controlled by a PLC controller.

2. The non-contact automatic temperature control heating device for a diesel water pump oil tank according to claim 1, characterized in that, The temperature sensor employs a dual-sensor redundancy detection mechanism consisting of a PT1000 contact probe and an infrared non-contact sensor.

3. The non-contact automatic temperature control heating device for a diesel water pump oil tank according to claim 1, characterized in that, The suspended heating rod is a suspended ceramic heating rod.

4. A non-contact automatic temperature control heating device for a diesel water pump oil tank according to claim 1, characterized in that, The radiation shield is made of 304 stainless steel.

5. A non-contact automatic temperature control heating device for a diesel water pump oil tank according to claim 1, characterized in that, The suspended heating rod is 20±5cm from the bottom of the oil tank.

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