Diesel engine temperature measuring equipment

Abstract

The utility model relates to the technical field of temperature detection, in particular to diesel engine temperature measuring equipment which comprises a main body, a touch screen and a plurality of acquisition instruments are arranged on the front end face of the main body, a power switch is arranged on the front end face of the main body, a plurality of 25-core socket holes are formed in the back of the main body, and a plurality of 4-core socket holes and a plurality of 3-core socket holes are further formed in the back of the main body. The device can measure the exhaust temperature of each cylinder of the diesel engine and the inlet and outlet temperature of a supercharger according to the characteristics of the diesel engine.

Description

Technical Field

[0001] This utility model relates to a diesel engine temperature measuring device, belonging to the field of temperature detection technology. Background Technology

[0002] A diesel engine is an internal combustion engine that uses diesel fuel. Its working principle is based on the auto-ignition properties of diesel oil. When air is compressed to a sufficiently high temperature and pressure, the diesel fuel injected into the cylinder ignites and burns, pushing the piston to do work, thereby driving the crankshaft to rotate and generate power. As an important power unit, the diesel engine plays a vital role in various fields. With continuous technological advancements and increasingly stringent environmental regulations, the performance of diesel engines will continue to improve, and their application areas will become even wider.

[0003] During the operation of a diesel engine, a large amount of heat is generated, including the exhaust temperature of each cylinder and the bearing temperature. In particular, for medium and low speed diesel engines, the exhaust temperature of each cylinder, as well as the inlet and outlet temperatures of the turbocharger and the bearing temperatures, need to be measured. Therefore, in order to ensure the normal operation of the diesel engine, it is necessary to measure these temperatures. Utility Model Content

[0004] The purpose of this invention is to provide a diesel engine temperature measurement device that can achieve high measurement accuracy and precision.

[0005] To achieve the above objectives, the main technical solution adopted by this utility model includes: a diesel engine temperature measuring device, comprising a main body, a touch screen and several data acquisition devices provided on the front end face of the main body, a power switch provided on the front end face of the main body, several 25-pin socket holes provided on the back of the main body, and several 4-pin socket openings and several 3-pin socket openings provided on the back of the main body.

[0006] The plurality of data acquisition devices are respectively a No. 1 bearing square tube data acquisition device, an A exhaust temperature square tube data acquisition device, and a B exhaust temperature square tube data acquisition device; the plurality of 25-pin socket holes are respectively a No. 1 bearing square tube connection hole, a No. 2 bearing square tube connection hole, an A exhaust temperature square tube connection hole, and a B exhaust temperature square tube connection hole; the plurality of 4-pin socket openings are respectively a test PT100 sensor connection hole and a standard PT100 sensor connection hole for connecting bearing temperature sensors; the plurality of 3-pin socket openings are respectively a test K-couple sensor connection hole and a standard K-couple sensor connection hole for connecting exhaust temperature sensors.

[0007] The diesel engine temperature measurement equipment also includes a temperature measurement and monitoring terminal, an exhaust temperature measurement system, and a bearing temperature measurement system. The temperature measurement and monitoring terminal is used to display the temperature of each measurement point in real time, save measurement data records, and query historical records. The exhaust temperature measurement system includes an exhaust temperature square tube and an exhaust temperature sensor. The bearing temperature measurement system includes a bearing square tube and a bearing temperature sensor.

[0008] Furthermore, the bearing temperature sensor adopts a cable-type 4-core plug structure, and each interface of the bearing square tube that receives the temperature sensor adopts a 4-core socket structure. The bearing temperature centralized signal is transmitted to the temperature measurement and monitoring end via a 24-core cable, and the 24-core cable end can be equipped with a 25-core plug.

[0009] Furthermore, the 3-pin socket opening, 4-pin socket opening, and 25-pin socket hole are selected according to the diesel engine model and on-site wiring requirements to determine the outgoing direction.

[0010] Furthermore, the exhaust temperature measurement system uses two exhaust temperature square tubes, one of which is an A-type temperature square tube and the other is a B-type temperature square tube. The A-type and B-type temperature square tubes are arranged symmetrically and have the same external dimensions. The number and position of the sockets on each tube are the same.

[0011] Furthermore, the exhaust temperature square tube is equipped with 11 3-pin sockets and 1 25-pin socket, of which 10 3-pin sockets are used to connect to 8 cylinder exhaust temperature sensors, and the turbocharger inlet and outlet temperature sensors are connected to the 3-pin plugs.

[0012] Furthermore, the 11th 3-pin socket is connected to the compensation temperature sensor. The exhaust temperature measurement system is used to measure the exhaust temperature of each cylinder of the diesel engine and the temperature of the turbocharger inlet and outlet, and outputs K-couple voltage signals respectively.

[0013] Furthermore, the bearing temperature measurement system uses four bearing square tubes, namely: bearing square tubes 1#-2#, bearing square tubes 3#-5#, bearing square tubes 6#-7#, and bearing square tubes 8#-9#.

[0014] Furthermore, the 1#-2# bearing square tube is used to connect the 1#-2# bearing temperature sensor, the 3#-5# bearing square tube is used to connect the 3#-5# bearing temperature sensor, the 6#-7# bearing square tube is used to connect the 6#-7# bearing temperature sensor, and the 8#-9# bearing square tube is used to connect the 8#-9# bearing temperature sensor.

[0015] Furthermore, the internal conductors of the temperature exhaust square tube are equipped with K-couple compensating conductors; the temperature exhaust square tube is filled with insulating foam; a grounding screw and a grounding conductor are arranged at one end of the temperature exhaust square tube, and the internal conductors of the bearing square tube are equipped with copper core conductors; the bearing square tube is filled with insulating foam.

[0016] The beneficial effects of this utility model are as follows:

[0017] To address the characteristics of diesel engines, the exhaust temperature of each cylinder and the inlet and outlet temperatures of the turbocharger are measured using distributed temperature sensors at various measurement points. All temperature signals are then centrally transmitted to the temperature monitoring terminal, achieving a streamlined and simplified wiring layout. The temperature sensors measuring the exhaust temperature of each cylinder and the turbocharger inlet and outlet temperatures employ a cable-type sensor structure with a 3-pin connector. The exhaust temperature sensors for each cylinder, as well as the turbocharger inlet and outlet temperature sensors, are all connected via connectors to corresponding sockets on the exhaust temperature square tube. A compensation temperature sensor is placed at one end of the exhaust temperature square tube to measure the temperature influence caused by its installation location. This temperature signal is used to compensate for the cold junction temperature of the exhaust temperature sensors for each cylinder, improving the accuracy and precision of temperature measurement. Each interface on the exhaust temperature square tube receiving a temperature sensor uses a 3-pin socket structure. The centralized exhaust temperature signal is transmitted to the temperature measurement and monitoring terminal via a dedicated 24-pin cable. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the temperature detection terminal of this utility model;

[0019] Figure 2 This is a schematic diagram of the temperature detection of the heat dissipation square tube of this utility model;

[0020] Figure 3 This is a schematic diagram of the diesel engine temperature detection method of this utility model.

[0021] Figure 4 This is a schematic diagram of the bearing square tube inspection method of this utility model;

[0022] Figure 5 This is a typical layout diagram of the A-column temperature-dissipating square tubes of this utility model;

[0023] Figure 6 This is a schematic diagram of a typical arrangement of the B-column temperature-dissipating square tube of this utility model;

[0024] Figure 7 This is a schematic diagram of a typical arrangement of the A-column bearing square tubes of this utility model;

[0025] Figure 8 This is a schematic diagram of a typical arrangement of the B-row bearing square tubes of this utility model;

[0026] Figure 9 This is a schematic diagram of the exhaust temperature measuring device of this utility model;

[0027] Figure 10 This is a schematic diagram of the bearing temperature measuring device of this utility model;

[0028] Figure 11This is a schematic diagram of the circuit connection of the No. 1 inspection instrument of this utility model;

[0029] Figure 12 This is a schematic diagram of the circuit connection of the No. 2 inspection instrument of this utility model;

[0030] Figure 13 This is a schematic diagram of the circuit connection of the No. 3 inspection instrument of this utility model;

[0031] Figure 14 This is a schematic diagram of the touch screen circuit connection of this utility model;

[0032] Figure 15 This is a front view of the testing equipment of this utility model;

[0033] Figure 16 This is a schematic diagram of the back of the testing equipment of this utility model.

[0034] In the diagram, 1-main body; 2-touch screen; 3-data acquisition device; 4-power switch; 5-4-pin socket opening; 6-3-pin socket opening; 7-25-pin socket hole. Detailed Implementation

[0035] The following will describe the implementation of this application in detail with reference to the accompanying drawings and specific embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0036] like Figures 1-5 As shown, the diesel engine temperature measuring device provided in this embodiment includes a main body 1. The front end of the main body 1 is provided with a touch screen 2 and several data acquisition devices 3. The front end of the main body 1 is provided with a power switch 4. The back of the main body 1 is provided with several 25-pin socket holes 7. The back of the main body 1 is also provided with several 4-pin socket openings 5 ​​and several 3-pin socket openings 6.

[0037] Several data acquisition devices 3 are respectively the data acquisition device for bearing square tube #1, the data acquisition device for exhaust temperature square tube A, and the data acquisition device for exhaust temperature square tube B. Several 25-pin socket holes 7 are respectively the connection holes for bearing square tube #1, bearing square tube #2, exhaust temperature square tube A, and exhaust temperature square tube B. Several 4-pin socket openings 5 ​​are respectively the connection holes for connecting the PT100 sensor under test and the standard PT100 sensor for bearing temperature sensors. Several 3-pin socket openings 6 are respectively the connection holes for connecting the exhaust temperature sensor for K-couple sensor under test and the standard K-couple sensor.

[0038] The diesel engine temperature measurement equipment also includes a temperature measurement and monitoring terminal, an exhaust temperature measurement system, and a bearing temperature measurement system. The temperature measurement and monitoring terminal is used to display the temperature of each measurement point in real time, save measurement data records, and query historical records. The exhaust temperature measurement system includes an exhaust temperature square tube and an exhaust temperature sensor. The bearing temperature measurement system includes a bearing square tube and a bearing temperature sensor.

[0039] The specific implementation method for the temperature measurement and monitoring terminal is as follows:

[0040] Example 1: When a sensor is not connected to a certain measurement channel, the signal does not form a loop, and the monitoring will report an error and give a prompt, which facilitates quick inspection and recovery. It displays the temperature value of each measurement point measured by the temperature sensor of each cylinder measurement channel of the A-column and B-column exhaust square tubes.

[0041] Example 2: When the temperature measurement value of a certain measuring channel exceeds the upper and lower allowable range of the preset warning value, an alarm will be issued to provide a prompt, preventing the diesel engine from continuing to run and causing damage and loss. The temperature value of each measuring point measured by the temperature sensor of each bearing channel of the bearing square tube in column A and the bearing square tube in column B will be displayed.

[0042] Example 3: When the temperature measurement value of a certain measurement channel exceeds the upper and lower limits of the preset warning value, an alarm will be issued to provide a prompt, preventing the diesel engine from continuing to run and causing damage and loss. The temperature measurement and monitoring terminal interface displays the main interface.

[0043] The bearing temperature sensor adopts a cable-type 4-core plug structure. Each interface of the bearing square tube that receives the temperature sensor adopts a 4-core socket structure. The bearing temperature centralized signal is transmitted to the temperature measurement and monitoring end via a 24-core cable. The 24-core cable end can be equipped with a 25-core plug.

[0044] The 3-pin socket hole 6, the 4-pin socket hole 5, and the 25-pin socket hole 7 allow for selection of the outgoing cable direction based on the diesel engine model and on-site wiring requirements. This enables three outgoing cable options, allowing for flexible configuration and optimal installation. Simultaneously, it allows for the measurement of diesel engine exhaust pipe temperature and bearing temperature, and the monitoring of the diesel engine's operating status.

[0045] The exhaust temperature measurement system uses two exhaust temperature square tubes, one of which is the A exhaust temperature square tube and the other is the B exhaust temperature square tube. The A exhaust temperature square tube and the B exhaust temperature square tube are arranged symmetrically and have the same external dimensions. The number and position of the sockets on each square tube are the same.

[0046] Furthermore, the exhaust temperature square tube is equipped with 11 3-pin sockets and 1 25-pin socket, of which 10 3-pin sockets are used to connect to 8 cylinder exhaust temperature sensors, and the turbocharger inlet and outlet temperature sensors are connected to the 3-pin plugs.

[0047] Furthermore, the 11th 3-pin socket is connected to a compensated temperature sensor. The exhaust temperature measurement system is used to measure the exhaust temperature of each cylinder of the diesel engine and the temperature of the turbocharger inlet and outlet, and outputs K-couple voltage signals respectively.

[0048] The bearing temperature measurement system uses four sections of bearing square tubes, namely: bearing square tubes 1#-2#, bearing square tubes 3#-5#, bearing square tubes 6#-7#, and bearing square tubes 8#-9#.

[0049] Furthermore, the square tubes for bearings 1#-2# are used to connect the temperature sensors for bearings 1#-2#, 3#-5# are used to connect the temperature sensors for bearings 3#-5#, 6#-7# are used to connect the temperature sensors for bearings 6#-7#, and 8#-9# are used to connect the temperature sensors for bearings 8#-9#. The bearing temperature measurement system is used to measure the temperature at nine locations on bearings 1#-9#, and outputs nine sets of Pt100 resistance signals. It should be noted that the number and location of the sockets on the square tubes, as well as the orientation of the sockets, vary depending on the diesel engine model.

[0050] Furthermore, a typical diagram of a heat dissipation square tube is shown below:

[0051] A column of temperature-controlled square tubes: STS, ETS, A1, A2, A3, A4, A5, A6, A7, A8, A compensation temperature;

[0052] B-column temperature-controlled square tubes STS, ETS, B1, B2, B3, B4, B5, B6, B7, B8, B compensation temperature;

[0053] A typical diagram of a bearing square tube is shown below:

[0054] Column A bearing square tubes A1, A2, A3, A4, A5;

[0055] B-column bearings, square tubes B6, B7, B8, B9;

[0056] The internal conductors of the exhaust square tube are equipped with K-couple compensating conductors; the exhaust square tube is filled with insulating foam; a grounding screw and grounding conductor are arranged at one end of the exhaust square tube, and the internal conductors of the bearing square tube are equipped with copper core conductors; the bearing square tube is filled with insulating foam to fix and protect the conductors, so as to avoid damage to the conductors due to the vibration of the diesel engine.

[0057] The detection method of the diesel engine temperature measuring device includes the following steps:

[0058] S1: After powering on, connect the K-couple temperature sensor to be tested to the K-couple temperature sensor socket on the side of the testing equipment, and compare the measured value of the K-couple temperature sensor to be tested with the value of the standard K-couple temperature sensor; connect the PT100 temperature sensor to be tested to the PT100 temperature sensor socket on the side of the testing equipment, and compare the measured value of the PT100 temperature sensor to be tested with the value of the standard PT100 temperature sensor.

[0059] S2: Connect the heat exhaust square tube to be tested to the socket of the testing equipment through the plug. Connect a qualified k-coupled temperature sensor to each socket on the heat exhaust square tube. If the temperature measurement value of a certain channel on the heat exhaust square tube is inconsistent with the temperature value of the standard temperature sensor, it indicates that there is a poor solder joint or open circuit fault in a certain wire of the heat exhaust square tube. Then use a multimeter to check the specific circuit fault.

[0060] S3: Connect the bearing square tube to be inspected to the socket of the testing equipment via a plug. Connect a qualified PT100 temperature sensor to each socket on the bearing square tube. If the temperature measurement value of a certain channel on the bearing square tube is inconsistent with the value of the standard temperature sensor, it indicates that there is a poor solder joint or open circuit fault in a certain wire of the bearing square tube. Then use a multimeter to check the specific circuit fault.

[0061] The foregoing description illustrates and describes preferred embodiments of the present invention, but it should be understood that the present invention is not limited to the forms disclosed herein. Any modifications and variations made by those skilled in the art without departing from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A diesel engine temperature measuring device, comprising a main body (1), characterized in that: The front end of the main body (1) is provided with a touch screen (2) and several data acquisition devices (3). The front end of the main body (1) is provided with a power switch (4). The back of the main body (1) is provided with several 25-pin socket holes (7). The back of the main body (1) is also provided with several 4-pin socket openings (5) and several 3-pin socket openings (6). The acquisition devices (3) are respectively the No. 1 bearing square tube acquisition device, the A exhaust temperature square tube acquisition device and the B exhaust temperature square tube acquisition device; the 25-pin socket holes (7) are respectively the No. 1 bearing square tube connection hole, the No. 2 bearing square tube connection hole, the A exhaust temperature square tube connection hole and the B exhaust temperature square tube connection hole; the 4-pin socket openings (5) are respectively the PT100 sensor connection hole to be tested and the standard PT100 sensor connection hole for connecting the bearing temperature sensor; the 3-pin socket openings (6) are respectively the K-couple sensor connection hole to be tested and the standard K-couple sensor connection hole for connecting the exhaust temperature sensor. The diesel engine temperature measurement equipment also includes a temperature measurement and monitoring terminal, an exhaust temperature measurement system, and a bearing temperature measurement system. The temperature measurement and monitoring terminal is used to display the temperature of each measurement point in real time, save measurement data records, and query historical records. The exhaust temperature measurement system includes an exhaust temperature square tube and an exhaust temperature sensor. The bearing temperature measurement system includes a bearing square tube and a bearing temperature sensor.

2. The diesel engine temperature measuring device according to claim 1, characterized in that: The bearing temperature sensor adopts a cable-type 4-core plug structure. Each interface of the bearing square tube that receives the temperature sensor adopts a 4-core socket structure. The bearing temperature centralized signal is transmitted to the temperature measurement and monitoring end via a 24-core cable. The 24-core cable end can be equipped with a 25-core plug.

3. The diesel engine temperature measuring device according to claim 1, characterized in that: The 3-core socket opening (6), 4-core socket opening (5), and 25-core socket hole (7) are selected according to the diesel engine model and on-site wiring requirements to determine the outgoing direction.

4. The diesel engine temperature measuring device according to claim 1, characterized in that: The exhaust temperature measurement system uses two exhaust temperature square tubes, one of which is the A exhaust temperature square tube and the other is the B exhaust temperature square tube. The A exhaust temperature square tube and the B exhaust temperature square tube are arranged symmetrically and have the same external dimensions. The number and position of the sockets on each square tube are the same.

5. A diesel engine temperature measuring device according to claim 4, characterized in that: The exhaust temperature square tube is equipped with 11 3-pin sockets and 1 25-pin socket. Ten of the 3-pin sockets are used to connect to the 8 cylinder exhaust temperature sensors, and the turbocharger inlet and outlet temperature sensors are connected to the 3-pin plugs.

6. The diesel engine temperature measuring device according to claim 5, characterized in that: The 11th 3-pin socket is connected to the compensated temperature sensor. The exhaust temperature measurement system is used to measure the exhaust temperature of each cylinder of the diesel engine and the temperature of the turbocharger inlet and outlet, and outputs K-couple voltage signals respectively.

7. The diesel engine temperature measuring device according to claim 1, characterized in that: The bearing temperature measurement system uses four bearing square tubes, namely: bearing square tubes 1#-2#, bearing square tubes 3#-5#, bearing square tubes 6#-7#, and bearing square tubes 8#-9#.

8. The diesel engine temperature measuring device according to claim 7, characterized in that: Among them, the square tubes of bearings 1#-2# are used to connect the temperature sensors of bearings 1#-2#, the square tubes of bearings 3#-5# are used to connect the temperature sensors of bearings 3#-5#, the square tubes of bearings 6#-7# are used to connect the temperature sensors of bearings 6#-7#, and the square tubes of bearings 8#-9# are used to connect the temperature sensors of bearings 8#-9#.

9. A diesel engine temperature measuring device according to claim 1, characterized in that: The internal conductors of the temperature exhaust square tube are equipped with K-couple compensating conductors; the inside of the temperature exhaust square tube is filled with insulating foam; a grounding screw and a grounding conductor are arranged at one end of the temperature exhaust square tube, and the internal conductors of the bearing square tube are equipped with copper core conductors; the inside of the bearing square tube is filled with insulating foam.

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