Diesel engine temperature measuring equipment and detection method

Abstract

The invention 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. According to the characteristics of the diesel engine, the exhaust temperature of each cylinder of the diesel engine and the inlet and outlet temperature of the supercharger are measured.

Description

Technical Field

[0001] The invention relates to a diesel engine temperature measuring device, in particular to a diesel engine temperature measuring device and a detection method, belonging to the technical field of temperature detection. Background Art

[0002] A diesel engine is an internal combustion engine that uses diesel as fuel. The working principle of a diesel engine is based on the self-ignition characteristics of diesel. When the air is compressed to a sufficiently high temperature and pressure, the diesel injected into the cylinder will ignite and burn on its own, pushing the piston to do work, thereby driving the crankshaft to rotate and generate power. As an important power device, the diesel engine plays an important role in various fields. With the continuous advancement of technology and the improvement of environmental protection regulations, the performance of diesel engines will continue to improve and their application areas will become more extensive; During the operation of the diesel engine, a large amount of heat is generated, which involves the exhaust temperature of each cylinder and the bearing temperature of the diesel engine; especially the exhaust temperature of each cylinder of the medium and low-speed diesel engine, the inlet and outlet temperature of the supercharger and the temperature of each bearing. Therefore, in order to ensure the normal operation of the diesel engine, it is necessary to measure its temperature. Summary of the invention

[0003] The purpose of the present invention is to provide a diesel engine temperature measuring device and detection method, which can realize the measurement of exhaust temperature of each cylinder and the measurement of inlet and outlet temperature of the supercharger.

[0004] In order to achieve the above-mentioned purpose, the main technical scheme adopted by the present invention includes: a diesel engine temperature measuring device, including a main body, the front end surface of the main body is provided with a touch screen and a plurality of collectors, the front end surface of the main body is provided with a power switch, the back of the main body is provided with a plurality of 25-core socket holes, the back of the main body is also provided with a plurality of 4-core socket openings and a plurality of 3-core socket openings; Several of the collectors are respectively 1# bearing square tube collector, A exhaust temperature square tube collector and B exhaust temperature square tube collector, several of the 25-core socket holes are respectively 1# bearing square tube connection hole, 2# bearing square tube connection hole, A exhaust temperature square tube connection hole and B exhaust temperature square tube connection hole, several of the 4-core socket openings are respectively the to-be-tested PT100 sensor connection hole and the standard PT100 sensor connection hole for connecting the bearing temperature sensor, and several of the 3-core socket openings are respectively the to-be-tested K-pair sensor connection hole and the standard K-pair sensor connection hole for connecting the exhaust temperature sensor; The diesel engine temperature measurement device also includes a temperature measurement monitoring end, an exhaust temperature measurement system and a bearing temperature measurement system. The temperature measurement detection end 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.

[0005] 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 summary signal adopts a 24-core cable to transmit the signal to the temperature measurement and monitoring end, and the 24-core cable end can be equipped with a 25-core plug.

[0006] Furthermore, the outlet directions of the 3-core socket opening, the 4-core socket opening and the 25-core socket opening are selected according to the diesel engine model and on-site wiring requirements.

[0007] Furthermore, the exhaust temperature measurement system uses two exhaust temperature square tubes, one of which is the A row temperature square tube, and the other is the B row temperature square tube. The A row temperature square tube and the B row temperature square tube are arranged symmetrically and have the same outer dimensions. The number and position of the sockets arranged on the square tubes are consistent.

[0008] Furthermore, 11 3-core sockets and 1 25-core socket are arranged on the exhaust temperature square tube, wherein 10 3-core sockets are used to connect with 8 cylinder exhaust temperature sensors, and the turbocharger inlet and outlet temperature sensors are connected with 3-core plugs.

[0009] Furthermore, the 11th 3-core socket is connected to the compensation temperature sensor, and the exhaust temperature measurement system is used to measure the exhaust of each cylinder of the diesel engine and the temperature of the inlet and outlet of the supercharger, and outputs K-couple voltage signals respectively.

[0010] Furthermore, the bearing temperature measurement system uses 4 sections of bearing square tubes, which are divided into: 1#-2# bearing square tubes, 3#-5# bearing square tubes, 6#-7# bearing square tubes, and 8#-9# bearing square tubes.

[0011] Furthermore, the 1#-2# bearing square tubes are used to connect the 1#-2# bearing temperature sensors, the 3#-5# bearing square tubes are used to connect the 3#-5# bearing temperature sensors, the 6#-7# bearing square tubes are used to connect the 6#-7# bearing temperature sensors, and the 8#-9# bearing square tubes are used to connect the 8#-9# bearing temperature sensors.

[0012] Furthermore, the inner wire of the heat exhaust square tube is configured with a K-pair compensation wire; the inner wire of the heat exhaust square tube is filled with an insulating foam; a grounding screw and a grounding wire are arranged at one end of the heat exhaust square tube, and the inner wire of the bearing square tube is configured with a copper core wire; the inner wire of the bearing square tube is filled with an insulating foam.

[0013] A method for detecting a diesel engine temperature measuring device comprises the following steps: 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; S2: Connect the exhaust temperature square tube to be tested to the socket of the testing equipment through a plug, and connect each socket on the exhaust temperature square tube to a K-pair temperature sensor that has passed the test. If the temperature measurement value of a channel on the exhaust temperature square tube is inconsistent with the temperature value of the standard temperature sensor, it indicates that there is a cold solder joint or open circuit fault in a certain wire of the exhaust temperature square tube. Then use a multimeter to check the specific line fault; S3: Connect the bearing square tube to be inspected to the socket of the testing equipment through a plug, and connect each socket on the bearing square tube to a qualified pt100 temperature sensor. If the temperature measurement value of a channel connected to the bearing square tube is inconsistent with the value of the standard temperature sensor, it indicates that there is a cold solder joint or open circuit fault in a certain wire of the bearing square tube. Then use a multimeter to check the specific line fault.

[0014] The present invention has at least the following beneficial effects: In view of the characteristics of diesel engines, the exhaust temperature of each cylinder of the diesel engine and the inlet and outlet temperature of the turbocharger are measured by distributing and installing temperature sensors at various measuring points, and the temperature signals are centrally and uniformly transmitted to the temperature monitoring end, so as to realize intensive and simplified layout and wiring. The temperature sensors for measuring the exhaust of each cylinder and the inlet and outlet of the turbocharger adopt a cable-type temperature sensor structure with a 3-core plug; the temperature sensors of the exhaust of each cylinder, the inlet and outlet temperature sensors of the turbocharger are uniformly connected to the corresponding sockets on the exhaust temperature square tube through plugs, and a compensation temperature sensor is arranged at one end of the exhaust temperature square tube to measure the temperature influence brought by the installation position of the exhaust temperature square tube, and the temperature signal is used to compensate the compensation temperature of the cold end of the exhaust temperature sensor of each cylinder, so as to improve the measurement precision and accuracy of the temperature. Each interface of the exhaust temperature square tube that receives the temperature sensor adopts a 3-core socket structure, and the exhaust temperature centralized summary signal adopts a 24-core cable to transmit the signal to the temperature measurement and monitoring end. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram showing the temperature detection end of the present invention; Figure 2 This is a schematic diagram of the temperature detection of the heat exhaust square tube of the present invention; Figure 3 It is a schematic diagram of diesel engine temperature detection of the present invention; Figure 4 This is a schematic diagram of the detection of the bearing square tube of the present invention; Figure 5 This is a schematic diagram of a typical arrangement of the A-row heat exhaust square tubes of the present invention; Figure 6 This is a schematic diagram of a typical arrangement of the B row heat exhaust square tubes of the present invention; Figure 7 This is a schematic diagram of a typical arrangement of the A-row bearing square tubes of the present invention; Figure 8 This is a schematic diagram of a typical arrangement of the B-row bearing square tubes of the present invention; Fig. 9 It is a schematic diagram of the exhaust temperature measuring device of the present invention; Fig.10 It is a schematic diagram of a bearing temperature measuring device of the present invention; Fig.11 This is a circuit connection diagram of the 1# inspection instrument of the present invention; Fig.12 This is a circuit connection diagram of the 2# inspection instrument of the present invention; Fig.13 This is a circuit connection diagram of the 3# patrol inspection instrument of the present invention; Fig.14 It is a schematic diagram of the touch screen circuit connection of the present invention; Fig.15 It is a front schematic diagram of the detection device of the present invention; Fig.16 It is a schematic diagram of the back of the detection device of the present invention.

[0016] In the figure, 1-main body; 2-touch screen; 3-collector; 4-power switch; 5-4-core socket opening; 6-3-core socket opening; 7-25-core socket opening. DETAILED DESCRIPTION

[0017] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0018] like Figure 1-Figure 5 As shown, the diesel engine temperature measuring device provided in this embodiment includes a main body 1, a touch screen 2 and a plurality of collectors 3 are arranged on the front face of the main body 1, a power switch 4 is arranged on the front face of the main body 1, a plurality of 25-core socket holes 7 are arranged on the back of the main body 1, and a plurality of 4-core socket openings 5 ​​and a plurality of 3-core socket openings 6 are also arranged on the back of the main body 1; The plurality of collectors 3 are respectively the 1# bearing square tube collector, the A exhaust temperature square tube collector and the B exhaust temperature square tube collector, the plurality of 25-core socket holes 7 are respectively the 1# bearing square tube connection hole, the 2# bearing square tube connection hole, the A exhaust temperature square tube connection hole and the B exhaust temperature square tube connection hole, the plurality of 4-core socket openings 5 ​​are respectively the to-be-tested PT100 sensor connection holes and the standard PT100 sensor connection holes for connecting the bearing temperature sensor, and the plurality of 3-core socket openings 6 are respectively the to-be-tested K pair sensor connection holes and the standard K pair sensor connection holes for connecting the exhaust temperature sensor; The diesel engine temperature measurement equipment also includes a temperature measurement monitoring terminal, an exhaust temperature measurement system and a bearing temperature measurement system. The temperature measurement detection 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. The specific implementation example for the temperature measurement monitoring terminal is as follows: Embodiment 1: When a certain measurement channel is not connected to a sensor, the signal does not form a loop, and the monitoring will give an error prompt to facilitate quick inspection and recovery, and display the temperature value of each measurement point measured by the temperature sensor of each cylinder measurement channel of the exhaust temperature square tube of column A and column B; Embodiment 2: When the temperature measurement value of a certain measurement channel exceeds the upper and lower allowable range of the pre-set warning value, an alarm will be issued to give a prompt to prevent the diesel engine from continuing to run and damage the resulting losses, and the temperature sensors of the bearing channels of the A column and the B column will be displayed to measure the temperature values ​​of each measurement point; Embodiment 3: When the temperature measurement value of a certain measurement channel exceeds the upper and lower allowed range of the pre-set warning value, an alarm will be issued to give a prompt to prevent the diesel engine from continuing to run and causing damage. The temperature measurement monitoring terminal interface displays the main interface.

[0019] 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 summary signal uses a 24-core cable to transmit the signal to the temperature measurement and monitoring end, of which the 24-core cable end can be equipped with a 25-core plug.

[0020] The 3-core socket opening 6, the 4-core socket opening 5 and the 25-core socket opening 7 can select the outlet direction according to the diesel engine model and on-site wiring needs, and can realize the outlet selection in 3 directions, realize flexible configuration and installation of the optimal layout, and at the same time measure the diesel engine exhaust pipe temperature and bearing temperature, and monitor the operating condition of the diesel engine.

[0021] The exhaust temperature measurement system uses two exhaust temperature square tubes, one of which is the A row temperature square tube, and the other is the B row temperature square tube. The A row temperature square tube and the B row temperature square tube are arranged symmetrically and have the same outer dimensions. The number and position of the sockets on the square tubes are consistent.

[0022] Furthermore, 11 3-core sockets and 1 25-core socket are provided on the exhaust temperature square tube, of which 10 3-core sockets are used to connect with 8 exhaust temperature sensors of each cylinder, and the turbocharger inlet and outlet temperature sensors are connected with 3-core plugs; Furthermore, the 11th 3-core socket is connected to the compensation temperature sensor, and the exhaust temperature measurement system is used to measure the exhaust of each cylinder of the diesel engine and the temperature of the inlet and outlet of the supercharger, and outputs K-couple voltage signals respectively.

[0023] The bearing temperature measurement system uses 4 sections of bearing square tubes, divided into: 1#-2# bearing square tubes, 3#-5# bearing square tubes, 6#-7# bearing square tubes, 8#-9# bearing square tubes; Further, 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, the 8#-9# bearing square tube is used to connect the 8#-9# bearing temperature sensor, and the bearing temperature measurement system is used to measure the temperature of 9 positions of the 1# bearing to the 9# bearing, and output 9 groups of Pt100 resistance signals respectively. It should be noted that the number and position of the sockets arranged on the square tube and the direction of the socket arrangement are different for different diesel engine models; Furthermore, the typical diagram of the exhaust square tube is as follows: A row exhaust square tube STS, ETS, A1, A2, A3, A4, A5, A6, A7, A8, A compensation temperature; B row exhaust temperature square tube STS, ETS, B1, B2, B3, B4, B5, B6, B7, B8, B compensation temperature; Typical diagram of bearing square tube is as follows: A row of bearing square tubes A1, A2, A3, A4, A5; B row bearing square tube B6, B7, B8, B9; The wires inside the exhaust temperature square tube are configured with K-pair compensation wires; the exhaust temperature square tube is filled with insulating foam; a grounding screw and a grounding wire are arranged at one end of the exhaust temperature square tube, and the wires inside the bearing square tube are configured with copper core wires; the bearing square tube is filled with insulating foam to fix and protect the wires to avoid damage to the wires caused by the vibration of the diesel engine.

[0024] A method for detecting a diesel engine temperature measuring device comprises the following steps: 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; S2: Connect the exhaust temperature square tube to be tested to the socket of the testing equipment through a plug, and connect each socket on the exhaust temperature square tube to a K-pair temperature sensor that has passed the test. If the temperature measurement value of a channel on the exhaust temperature square tube is inconsistent with the temperature value of the standard temperature sensor, it indicates that there is a cold solder joint or open circuit fault in a certain wire of the exhaust temperature square tube. Then use a multimeter to check the specific line fault; S3: Connect the bearing square tube to be inspected to the socket of the testing equipment through a plug, and connect each socket on the bearing square tube to a qualified pt100 temperature sensor. If the temperature measurement value of a channel connected to the bearing square tube is inconsistent with the value of the standard temperature sensor, it indicates that there is a cold solder joint or open circuit fault in a certain wire of the bearing square tube. Then use a multimeter to check the specific line fault.

[0025] The above description shows and describes the preferred embodiments of the present invention, but it should be understood that the present invention is not limited to the form disclosed herein, and changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention should be within the scope of protection of the claims attached to the present invention.

Claims

1. A diesel engine temperature measuring device, comprising a main body (1), characterized in that: The front face of the main body (1) is provided with a touch screen (2) and a plurality of collectors (3), the front face of the main body (1) is provided with a power switch (4), the back of the main body (1) is provided with a plurality of 25-core socket holes (7), and the back of the main body (1) is also provided with a plurality of 4-core socket openings (5) and a plurality of 3-core socket openings (6); The plurality of collectors (3) are respectively 1# bearing square tube collector, A exhaust temperature square tube collector and B exhaust temperature square tube collector, the plurality of 25-core socket holes (7) are respectively 1# bearing square tube connection hole, 2# bearing square tube connection hole, A exhaust temperature square tube connection hole and B exhaust temperature square tube connection hole, the plurality of 4-core socket openings (5) are respectively PT100 sensor connection holes to be tested and standard PT100 sensor connection holes for connecting bearing temperature sensors, and the plurality of 3-core socket openings (6) are respectively K pair sensor connection holes to be tested and standard K pair sensor connection holes for connecting exhaust temperature sensors; The diesel engine temperature measurement device also includes a temperature measurement monitoring end, an exhaust temperature measurement system and a bearing temperature measurement system. The temperature measurement detection end 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. A diesel engine temperature measuring device according to claim 1, characterized in that: 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 summary signal adopts a 24-core cable to transmit the signal to the temperature measurement and monitoring end, and the 24-core cable end can be equipped with a 25-core plug.

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

4. A 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 row temperature square tube, and the other is the B row temperature square tube. The A row temperature square tube and the B row temperature square tube are arranged symmetrically and have the same outer dimensions. The number and position of the sockets arranged on the square tubes are consistent.

5. A diesel engine temperature measuring device according to claim 1, characterized in that: The exhaust temperature square tube is provided with 11 3-core sockets and 1 25-core socket, wherein 10 3-core sockets are used to connect with 8 exhaust temperature sensors of each cylinder, and the turbocharger inlet and outlet temperature sensors are connected with 3-core plugs.

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

7. A diesel engine temperature measuring device according to claim 1, characterized in that: The bearing temperature measurement system adopts 4 sections of bearing square tubes, which are divided into: 1#-2# bearing square tubes, 3#-5# bearing square tubes, 6#-7# bearing square tubes, and 8#-9# bearing square tubes.

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

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

10. A method for detecting a diesel engine temperature measuring device, characterized in that: The steps include: 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; S2: Connect the exhaust temperature square tube to be tested to the socket of the testing equipment through a plug, and connect each socket on the exhaust temperature square tube to a K-pair temperature sensor that has passed the test. If the temperature measurement value of a channel on the exhaust temperature square tube is inconsistent with the temperature value of the standard temperature sensor, it indicates that there is a cold solder joint or open circuit fault in a certain wire of the exhaust temperature square tube. Then use a multimeter to check the specific line fault; S3: Connect the bearing square tube to be inspected to the socket of the testing equipment through a plug, and connect each socket on the bearing square tube to a qualified pt100 temperature sensor. If the temperature measurement value of a channel connected to the bearing square tube is inconsistent with the value of the standard temperature sensor, it indicates that there is a cold solder joint or open circuit fault in a certain wire of the bearing square tube. Then use a multimeter to check the specific line fault.

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