High-speed diesel engine bearing bush temperature measurement sensor

Abstract

The utility model relates to the technical field of high-speed diesel engine bearing bush temperature measurement, and discloses a high-speed diesel engine bearing bush temperature measurement sensor which comprises a detection probe, one end of the detection probe is fixedly provided with a limiting step, one end of the limiting step is fixedly provided with a pre-tightening pressure spring, and one end of the pre-tightening pressure spring is fixedly provided with a lead. And the fixed joint is fixedly mounted on the surface of the pre-tightening pressure spring. According to the utility model, the whole device is fixed on the source taking component of the diesel engine inlet lubricating oil or low-temperature water circulating water pipeline through the fixed joint, the temperature is sensed through the detection probe and then is converted into a resistance value signal, and the resistance value signal is output through the lead, so that compared with the traditional device, the device has the advantages of simple and less structure and low cost. The anti-vibration device is simple in structure, convenient to use, flexible in installation mode, good in anti-vibration performance and low in cost, the efficiency of installation of a diesel engine factory can be improved by adopting the anti-vibration device, and the purchasing cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature measurement of bearing bushes of high-speed diesel engines, and more specifically, to a temperature measurement sensor for bearing bushes of high-speed diesel engines. Background Art

[0002] With the rapid development of industrialization and automation, the structure of machinery is becoming increasingly complex, and the degree of automation is gradually improving. Diesel engines are developing in the direction of high power, high strength, high reliability and high safety. In order to ensure the safe and reliable operation of diesel engines, real-time detection of diesel engine bearing temperature becomes very important. At present, most of the bearing temperature sensors available on the market rely on imports, which not only increases costs, but may also extend the production cycle due to supply chain problems. Therefore, it is necessary to seek a more economical, efficient and adaptable bearing temperature monitoring solution. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a high-speed diesel engine bearing temperature measuring sensor, which has the advantage of low cost for high-speed diesel engine bearing temperature measurement.

[0004] To achieve the above object, the utility model provides the following technical solution: a high-speed diesel engine bearing temperature sensor, comprising a detection probe, one end of the detection probe is fixedly installed with a limit step, one end of the limit step is fixedly installed with a preload spring, and one end of the preload spring is fixedly installed with a lead wire;

[0005] A fixed joint is fixedly mounted on the surface of the preloaded compression spring.

[0006] As a preferred technical solution of the utility model, a stainless steel sleeve is sleeved on the surface of the detection probe, and the interior of the detection probe is wound with a PT1000 platinum thermal resistor, and the PT1000 platinum thermal resistor is in close contact with the stainless steel sleeve.

[0007] As a preferred technical solution of the present utility model, the resistance value and the temperature value can be expressed by the following approximate relationship, that is, Rt=Rt0[1+α(t-t0)], where Rt is the resistance value at temperature t; Rt0 is the corresponding resistance value at temperature t0 (usually t0=0°C), and α is the temperature coefficient.

[0008] As a preferred technical solution of the utility model, the output line of the bearing temperature sensor is a three-wire value, in which the white lead is connected to one end of the root of the PT1000 platinum thermal resistor, and the other two leads (red lead one and red lead two) are connected to the other end of the PT1000 platinum thermal resistor at the same time, and the three leads are of the same length.

[0009] As a preferred technical solution of the utility model, the resistance value of the PT1000 platinum thermal resistor can be obtained by measuring the resistance between the red lead 1 and the white lead, and the resistance between the red wire 1 and the red wire 2, and subtracting the two measured resistance values, thereby calculating the temperature inside the diesel engine bearing cavity.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] The utility model fixes the entire device on the source component of the diesel engine's oil inlet or low-temperature water circulating water pipeline through a fixed joint, senses the temperature through a detection probe, converts it into a resistance signal, and outputs it through a lead wire. Compared with traditional devices, this device has a simpler and less structure, is more convenient to use, has a more flexible installation form, has better anti-seismic performance, and has a lower cost. The use of this product can improve the efficiency of diesel engine factory installation and save procurement costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model.

[0013] In the figure: 1. Detection probe; 2. Limiting step; 3. Fixed joint; 4. Pre-tightening spring; 5. Lead wire. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] like Figure 1 As shown, the utility model provides a high-speed diesel engine bearing temperature sensor, including a detection probe 1, one end of the detection probe 1 is fixedly installed with a limit step 2, one end of the limit step 2 is fixedly installed with a preload spring 4, and one end of the preload spring 4 is fixedly installed with a lead 5;

[0016] A fixed joint 3, the fixed joint 3 is fixedly mounted on the surface of the preload spring 4;

[0017] When in use, the device is fixed on the source component of the diesel engine oil inlet or low-temperature water circulation pipeline through the fixed joint 3, and then the detection probe 1 senses the temperature inside the bearing cavity and converts the temperature into a resistance signal. The resistance of the PT1000 platinum thermal resistor is proportional to the temperature change. When the temperature is 0°C, the resistance of the PT1000 platinum thermal resistor is 1000Ω, and when the temperature is 100°C, the resistance of the PT1000 platinum thermal resistor is 1385.055°C, and it is output through the lead 5;

[0018] The whole device is fixed on the source component of the diesel engine's oil inlet or low-temperature water circulating water pipeline through a fixed joint 3. After the temperature is sensed by the detection probe 1, it is converted into a resistance signal and output through the lead 5. Compared with the traditional device, this device has a simpler and less structure, is more convenient to use, and has a more flexible installation form, better anti-seismic performance, and lower cost. The use of this product can improve the efficiency of diesel engine factory installation and save procurement costs.

[0019] The surface of the detection probe 1 is sleeved with a stainless steel sleeve, the interior of the detection probe 1 is wound with a PT1000 platinum thermal resistor, and the PT1000 platinum thermal resistor is closely attached to the stainless steel sleeve.

[0020] Among them, the resistance value and temperature value can be expressed by the following approximate relationship, that is, Rt=Rt0[1+α(t-t0)], where Rt is the resistance value at temperature t; Rt0 is the corresponding resistance value at temperature t0 (usually t0=0℃), and α is the temperature coefficient.

[0021] Among them, the output line of the bearing temperature sensor is a 3-wire value, in which the white lead is connected to one end of the root of the PT1000 platinum thermal resistor, and the other two leads (red lead one and red lead two) are connected to the other end of the PT1000 platinum thermal resistor at the same time, and the three leads are of the same length.

[0022] Among them, by measuring the resistance between the red lead 1 and the white lead, and the resistance between the red wire 1 and the red wire 2, and subtracting the two measured resistance values, the resistance value of the PT1000 platinum thermal resistor can be obtained, thereby calculating the temperature inside the diesel engine bearing cavity.

[0023] The working principle and use process of this utility model:

[0024] When in use, the entire device is fixed on the source component of the diesel engine's oil inlet or low-temperature water circulation pipeline through the fixed joint 3. Then the detection probe 1 senses the temperature inside the bearing cavity and converts the temperature into a resistance signal. The resistance of the PT1000 platinum thermal resistor is proportional to the temperature change. When the temperature is 0°C, the resistance of the PT1000 platinum thermal resistor is 1000Ω. When the temperature is 100°C, the resistance of the PT1000 platinum thermal resistor is 1385.055°C, and it is output through the lead 5.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-speed diesel engine bearing temperature sensor, comprising a detection probe (1), characterized in that: A limit step (2) is fixedly mounted on one end of the detection probe (1), a preload spring (4) is fixedly mounted on one end of the limit step (2), and a lead wire (5) is fixedly mounted on one end of the preload spring (4); A fixed joint (3), wherein the fixed joint (3) is fixedly mounted on the surface of the preloaded compression spring (4).

2. A high-speed diesel engine bearing temperature sensor according to claim 1, characterized in that: The surface of the detection probe (1) is sleeved with a stainless steel sleeve, the interior of the detection probe (1) is wound with a PT1000 platinum thermal resistor, and the PT1000 platinum thermal resistor is closely attached to the stainless steel sleeve.

3. A high-speed diesel engine bearing temperature sensor according to claim 1, characterized in that: The output line of the bearing temperature sensor is a 3-wire value, in which the white lead is connected to one end of the root of the PT1000 platinum thermal resistor, and the other two leads are simultaneously connected to the other end of the PT1000 platinum thermal resistor, and the three leads are of the same length.

4. A high-speed diesel engine bearing temperature sensor according to claim 1, characterized in that: By measuring the resistance between the red lead 1 and the white lead, and the resistance between the red lead 1 and the red lead 2, and subtracting the two measured resistance values, the resistance value of the PT1000 platinum thermal resistor can be obtained.

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