Infrared radiation temperature measuring device and detection method for piston testing

Abstract

The present invention discloses an infrared radiation temperature measuring device and a detection method for piston testing, comprising a base, a vacuum cover is clamped on the top of the base, and a detection cavity is opened in the vacuum cover; an infrared temperature measuring unit is fixedly connected in the vacuum cover; a piston kit comprises a cylinder body, a piston body, a crankshaft body and a transmission assembly, the cylinder body is inserted into the detection cavity from the bottom of the vacuum cover, and is connected to the vacuum cover through a sealing connector. The present invention relates to the technical field of piston testing. The infrared radiation temperature measuring device and the detection method for piston testing can create a closed detection environment through the piston kit and the vacuum cover, so as to improve the detection accuracy of the infrared temperature measuring unit, and a sealing plug, an air suction hole and a circular groove are arranged in the cylinder body of the piston kit, so that the vacuum cover can be evacuated when the operating temperature of the piston body is detected, thereby reducing the influence of the cylinder body heat radiation on the environment inside the vacuum cover.

Description

Technical Field

[0001] The present invention relates to the technical field of piston testing, and in particular to an infrared radiation temperature measuring device and a detection method for piston testing. Background Art

[0002] Internal combustion engine piston temperature detection is an important part of ensuring the normal operation of the engine and extending its life. Since the piston is subjected to high temperature and high pressure during the operation of the internal combustion engine, real-time monitoring of its temperature helps to avoid problems such as overheating and thermal deformation, thereby ensuring the performance and reliability of the engine. Internal combustion engine piston temperature detection involves a variety of technical means, such as thermocouples, infrared sensors, fiber optic sensors, etc. Each method has its applicable scenarios and advantages and disadvantages.

[0003] In the prior art, the advantages of non-contact infrared temperature sensors are that they can measure objects that cannot be touched or are not suitable for contact, and they have the ability to respond quickly, measure remotely, and measure temperature over a wide range. However, the measurement results of non-contact sensors may be affected by environmental factors (such as background radiation and humidity) and the surface characteristics of the target object (such as reflectivity and emissivity), which inevitably leads to errors in the accuracy of non-contact infrared temperature sensors, affecting the piston temperature detection of internal combustion engines.

[0004] Therefore, those skilled in the art provide an infrared radiation temperature measuring device and a detection method for piston testing to solve the problems raised in the above background technology. Summary of the invention

[0005] The object of the present invention is to provide an infrared radiation temperature measuring device and a detection method for piston testing to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] According to one aspect of the invention, an infrared radiation temperature measuring device is provided.

[0008] The infrared radiation temperature measuring device comprises a base, a vacuum cover is clamped on the top of the base, and a detection cavity is provided in the vacuum cover;

[0009] An infrared temperature measuring unit is fixedly connected in the vacuum cover;

[0010] The piston kit includes a cylinder body, a piston body, a crankshaft body and a transmission assembly. The cylinder body is inserted into the detection cavity from the bottom of the vacuum cover and is connected to the vacuum cover through a sealing connector. A compression cavity is provided in the cylinder body, and the piston body is slidably connected in the compression cavity. The bottom of the piston body is connected to the crankshaft body through a connecting rod. A transmission assembly connected to the crankshaft body is provided on one side of the cylinder body.

[0011] A spark plug is fixedly connected at the center of the top of the compression chamber. An air inlet hole and an air exhaust hole are respectively opened on both sides of the spark plug at the top of the compression chamber. An air suction hole connected to the air inlet hole is opened at the top of the cylinder body. A circular groove is formed in the middle of the air suction hole. A sealing plug is slidably connected in the circular groove. A spring is fixedly connected between the bottom of the sealing plug and the circular groove.

[0012] An air intake assembly is connected inside the base, and an air intake hole extends downward from one end of the compression chamber and is in communication with the air intake assembly;

[0013] An exhaust component is fixedly connected to the inner wall of the detection chamber, and one end of the exhaust hole away from the compression chamber is communicated with the exhaust component.

[0014] Furthermore, the sealing connector includes a connecting substrate and a sealing gasket. The connecting substrate is fixedly connected to the bottom of the outer wall of the cylinder body. The bottom of the vacuum cover is provided with a positioning groove that fits the connecting substrate. The sealing gasket is clamped between the connecting substrate and the positioning groove.

[0015] Furthermore, the transmission assembly includes a driving gear, a driven gear, a transmission rod and a transmission block. A driven gear is fixedly connected to one side of the crankshaft body, and the bottom of the driven gear is meshed with a driving gear. A transmission rod is fixedly connected to the bottom of the driving gear. The bottom end of the transmission rod extends downward and is connected to a transmission block through a one-way bearing. A motor is embedded in the base, and the output shaft of the motor is fixedly connected to a transmission protrusion that is engaged with the transmission block.

[0016] Furthermore, the air intake assembly includes an air intake interface, an air suction port and an oil and gas pipe. The top of the base is fixedly connected to the air intake interface, the side wall of the base is fixedly connected to the air suction port and the oil and gas pipe, the air suction port and the oil and gas pipe are both connected to the air intake interface, and an air filter element is detachably connected to the air suction port.

[0017] Furthermore, the exhaust assembly includes an exhaust pipe and a plug-in block, the exhaust pipe is fixedly connected to the inner wall of the detection chamber and communicated with the outside, a plug-in block is fixedly connected to a side of the exhaust pipe close to the cylinder body, and the plug-in block is fixedly connected to a sealing ring on the outside of the exhaust pipe;

[0018] A slot for inserting the card plug-in block is provided on the top of the cylinder body.

[0019] Furthermore, the top of the vacuum cover is fixedly connected to a compressor, and the bottom of the compressor extends into the detection cavity and is fixedly connected to a wind cover.

[0020] Furthermore, a sleeve is fixedly connected to the middle of the exhaust pipe, a square groove connected to the exhaust pipe is opened in the sleeve, a through groove connected to the square groove is opened on one side of the outer wall of the sleeve, a sealing partition is hinged at the opening of the through groove in the square groove, and a spring plate for supporting the sealing partition is fixedly connected to the side of the bottom of the square groove away from the hinge.

[0021] According to another aspect of the present invention, a piston test detection method is provided, which is used for the above-mentioned infrared radiation temperature measurement device.

[0022] The detection method of the piston test comprises the following steps:

[0023] S101, installing a piston body, a crankshaft body and a transmission assembly in a cylinder body to obtain a piston kit;

[0024] S102, inserting the piston kit into the detection chamber through the bottom of the vacuum cover;

[0025] S103, sealingly connecting the piston kit to the vacuum cover using a sealing connector;

[0026] S104, after aligning the bottom of the cylinder body with the air intake assembly and the transmission bump on the top of the base, clamp the vacuum cover on the top of the base;

[0027] S105, starting the motor to make the piston kit run;

[0028] S106, monitoring the temperature of the piston kit by an infrared temperature measuring unit;

[0029] S107, recording the temperature data of the piston body during operation, and completing the operating temperature monitoring of the piston body.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. The infrared radiation temperature measuring device can create a closed detection environment by providing a piston kit and a vacuum cover to improve the detection accuracy of the infrared temperature measuring unit, and a sealing plug, an air suction hole and a circular groove are provided in the cylinder body of the piston kit, so that the vacuum cover can be evacuated when the operating temperature of the piston body is detected, thereby reducing the influence of the cylinder body heat radiation on the environment inside the vacuum cover, further reducing the interference source of the infrared temperature measuring unit, thereby effectively improving the accuracy of the infrared temperature measuring unit, and achieving a better monitoring effect of the operating temperature of the piston body;

[0032] 2. This infrared radiation temperature measuring device can be used to flush dust on the surface of the cylinder through the compressor and casing, and discharge the dust to the outside through the casing and the exhaust pipe, so that the environment in the detection chamber remains clean, thereby further reducing the interference source affecting the infrared temperature measuring unit and further improving the monitoring accuracy of the infrared temperature measuring unit.

[0033] 3. This piston test detection method can effectively simulate the actual operating environment of the piston body, so that the temperature detection data of the infrared temperature measurement unit is more accurate and the detection efficiency is higher, ensuring the normal operation of the engine and extending its life. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 is a structural schematic diagram of an infrared radiation temperature measuring device according to an embodiment of the present invention;

[0036] Figure 2 is a schematic diagram of the internal structure of an infrared radiation temperature measuring device according to an embodiment of the present invention;

[0037] Figure 3 is a structural schematic diagram of a base in an infrared radiation temperature measuring device according to an embodiment of the present invention;

[0038] Figure 4 is a structural schematic diagram of a transmission component in an infrared radiation temperature measuring device according to an embodiment of the present invention;

[0039] Figure 5 It is a structural schematic diagram of an air inlet and an exhaust hole in an infrared radiation temperature measuring device according to an embodiment of the present invention;

[0040] Figure 6 is a schematic structural diagram of an exhaust component in an infrared radiation temperature measurement device according to an embodiment of the present invention;

[0041] Figure 7 The figure is a flow chart of a detection method for a piston test according to an embodiment of the present invention.

[0042] Reference numerals:

[0043] 1. Base; 2. Infrared temperature measuring unit; 3. Piston kit; 31. Cylinder block; 32. Piston body; 33. Crankshaft body; 34. Transmission assembly; 341. Driving gear; 342. Driven gear; 343. Transmission rod; 344. Transmission block; 4. Vacuum cover; 5. Detection chamber; 6. Sealing connector; 61. Connecting base plate; 62. Sealing gasket; 7. Compression chamber; 8. Spark plug; 9. Inlet hole; 10. Exhaust hole; 11. Intake hole; 12. Circular groove; 13. Sealing plug; 14. Intake assembly; 141. Intake interface; 142. Air intake port; 143. Oil and gas pipe; 15. Exhaust assembly; 151. Exhaust pipe; 152. Card-connecting block; 16. Positioning groove; 17. Transmission bump; 18. Air filter element; 19. Sealing ring; 20. Slot; 21. Compressor; 22. Air hood; 23. Shell; 24. Square groove; 25. Through groove; 26. Sealing baffle; 27. Shrapnel; 28. Valve. DETAILED DESCRIPTION

[0044] The present invention is further described below with reference to the accompanying drawings and specific embodiments: Embodiment 1

[0045] According to one aspect of the invention, an infrared radiation temperature measuring device is provided.

[0046] Reference Figure 1 - Figure 6 The present invention discloses an infrared radiation temperature measuring device, comprising a base 1, a vacuum cover 4 is clamped on the top of the base 1, and a detection cavity 5 is opened in the vacuum cover 4;

[0047] An infrared temperature measuring unit 2, which is fixedly connected in the vacuum cover 4;

[0048] The piston kit 3 comprises a cylinder body 31, a piston body 32, a crankshaft body 33 and a transmission assembly 34. The cylinder body 31 is inserted into the detection chamber 5 from the bottom of the vacuum cover 4 and is connected to the vacuum cover 4 through a sealing connector 6. A compression chamber 7 is provided in the cylinder body 31. The piston body 32 is slidably connected in the compression chamber 7. The bottom of the piston body 32 is connected to the crankshaft body 33 through a connecting rod. A transmission assembly 34 connected to the crankshaft body 33 is provided on one side of the cylinder body 31.

[0049] A spark plug 8 is fixedly connected to the center of the top of the compression chamber 7. An air inlet 9 and an air outlet 10 are respectively provided on both sides of the spark plug 8 at the top of the compression chamber 7. An air intake hole 11 connected to the air inlet hole 9 is provided at the top of the cylinder body 31. A circular groove 12 is formed in the middle of the air intake hole 11. A sealing plug 13 is slidably connected in the circular groove 12. A spring is fixedly connected between the bottom of the sealing plug 13 and the circular groove 12.

[0050] An air intake assembly 14 is connected to the base 1, and an end of the air intake hole 9 away from the compression chamber 7 extends downward and is connected to the air intake assembly 14;

[0051] An exhaust component 15 is fixedly connected to the inner wall of the detection chamber 5 , and one end of the exhaust hole 10 away from the compression chamber 7 is connected to the exhaust component 15 .

[0052] In this embodiment, observe Figure 1 and Figure 2It can be found that through the setting of the base 1, the top of the base 1 is clamped in the vacuum cover 4, and the infrared temperature measuring unit 2 is connected inside the vacuum cover 4, which can be used to detect the temperature inside the vacuum cover 4, and a piston kit 3 is set at the bottom of the vacuum cover 4, and the piston kit 3 is extended from the bottom of the vacuum cover 4 into the detection cavity 5, so that the piston kit 3 can be placed in a closed environment, so that the interference of airflow flow can be reduced during the temperature monitoring of the piston body 32, and at the same time, the factors of environmental temperature and humidity changes can be avoided to affect the accuracy of the infrared temperature measuring unit 2, which can effectively improve the temperature monitoring accuracy of the piston.

[0053] Then look at Figure 4 and Figure 5 , a compression chamber 7 is opened in the cylinder body 31, and the piston body 32 is slidably set in the compression chamber 7, and then the crankshaft body 33 is connected to the bottom of the piston body 32 through a connecting rod, and finally a transmission assembly 34 connected to the crankshaft body 33 is set in the cylinder body 31, so that when the piston kit 3 is running, the transmission assembly 34 is driven by the motor in the base 1 to run, and the transmission assembly 34 is used to drive the crankshaft body 33 to make the piston body 32 reciprocate in the compression chamber 7 to simulate the use environment of the piston body 32, so that the infrared temperature measuring unit 2 can better detect the temperature change of the piston body 32 when it is running.

[0054] And in Figure 4 and Figure 5 It can also be found that a spark plug 8 is fixedly connected to the top center of the compression chamber 7, and an air inlet 9 and an exhaust hole 10 are respectively opened on both sides of the top of the compression chamber 7, and at the same time, the air inlet 9 and the exhaust hole 10 are connected with a damper for controlling the opening and closing, so that when the piston body 32 pulls up the compression chamber 7, the air inlet 9 is opened, and the air inlet 9 sucks the oil-gas mixture through the air intake component 14 in the base 1, and then when the piston body 32 squeezes the compression chamber 7, the spark plug 8 ignites the gas to generate thrust and heat, which can further simulate the use environment of the piston body 32, thereby improving the accuracy of the detection data of the infrared temperature measuring unit 2, and finally the expanded gas is discharged from the vacuum cover 4 through the exhaust hole 10 and the exhaust component 15, which can prevent the hot air from affecting the temperature in the vacuum cover 4, thereby reducing the interference source affecting the infrared temperature measuring unit 2, and can further improve the accuracy of the infrared temperature measuring unit 2.

[0055] exist Figure 5In the upper left corner, it can be found that an air intake hole 11 connected to the air inlet hole 9 is opened on the top of the cylinder body 31, and a circular groove 12 is formed in the middle of the air intake hole 11. A sealing plug 13 is slidably connected in the circular groove 12. At the same time, a spring is fixedly connected between the bottom of the sealing plug 13 and the circular groove 12, so that the sealing plug 13 can always keep the air intake hole 11 blocked under normal conditions. When the piston body 32 is running, after negative pressure is generated in the compression chamber 7, negative pressure will also be generated in the air inlet hole 9, so that the sealing plug 13 is sucked downward by the negative pressure, so that the air intake hole 11 is opened. At this time, the gas in the detection chamber 5 will be sucked into the air inlet hole 9, so that the gas in the detection chamber 5 is reduced. As the running time of the piston body 32 increases, the gas in the detection chamber 5 will gradually decrease, forming a low vacuum state in the detection chamber 5, thereby reducing the impact of the heat radiation of the cylinder body 31 on the environment inside the vacuum cover 4, and further reducing the interference source of the infrared temperature measuring unit 2, thereby further improving the accuracy of the infrared temperature measuring unit 2, and achieving better operating temperature monitoring effect of the piston body 32.

[0056] When the detection chamber 5 is in a low pressure state, the outside air will enter through the bottom gap of the vacuum cover 4, affecting the vacuum state in the detection chamber 5. Figure 2 It can be found that a sealing connector 6 is provided at the bottom of the cylinder body 31 , and is sealedly connected to the vacuum cover 4 via the sealing connector 6 , which can prevent the vacuum environment in the detection cavity 5 from being destroyed, thereby ensuring the accuracy and stability of the infrared temperature measurement unit 2 .

[0057] In a further preferred embodiment of the present invention, Figure 2 As shown, the sealing connector 6 includes a connecting substrate 61 and a sealing gasket 62. The connecting substrate 61 is fixedly connected to the bottom of the outer wall of the cylinder body 31. The bottom of the vacuum cover 4 is provided with a positioning groove 16 that fits with the connecting substrate 61. The sealing gasket 62 is clamped between the connecting substrate 61 and the positioning groove 16.

[0058] In this embodiment, by setting up a connecting substrate 61 and a positioning groove 16, it is possible to make it easier to connect the piston kit 3 with the vacuum cover 4, and a sealing gasket 62 is provided between the connecting substrate 61 and the positioning groove 16. When the sealing gasket 62 is under pressure, the gap between the connecting substrate 61 and the positioning groove 16 can be reduced, thereby preventing air from entering the detection chamber 5 through the gap and destroying the vacuum environment.

[0059] Since air cannot enter the detection cavity 5 through the gap, the external air pressure will squeeze the vacuum cover 4 and the connecting substrate 61, so that the connecting substrate 61 and the vacuum cover 4 further compress the sealing gasket 62, thereby further improving the sealing performance to effectively ensure the accuracy of the infrared temperature measuring unit 2.

[0060] In a further preferred embodiment of the present invention, Figure 3 and Figure 4 As shown, the transmission assembly 34 includes a driving gear 341, a driven gear 342, a transmission rod 343 and a transmission block 344. The driven gear 342 is fixedly connected to one side of the crankshaft body 33, and the bottom of the driven gear 342 is meshed with the driving gear 341. The transmission rod 343 is fixedly connected to the bottom of the driving gear 341. The bottom end of the transmission rod 343 extends downward and is connected to the transmission block 344 through a one-way bearing. A motor is embedded in the base 1, and the output shaft of the motor is fixedly connected to a transmission protrusion 17 that is engaged with the transmission block 344.

[0061] In this embodiment, a driven gear 342 is connected to one side of the crankshaft body 33, and a driving gear 341 is meshed at the bottom of the driven gear 342. Then, a transmission rod 343 is fixedly connected to the bottom of the driving gear 341, and a transmission clamp 344 is connected to the bottom of the transmission rod 343 through a one-way bearing. When the vacuum cover 4 is clamped on the base 1, the transmission clamp 344 is clamped with the transmission protrusion 17 connected to the base 1 and the motor output shaft. The crankshaft body 33 can be rotated by the operation of the motor to make the piston body 32 run, which is used to provide the piston body 32 with an initial power to squeeze the compression chamber 7, thereby starting the piston kit 3.

[0062] After the piston set 3 is started, the crankshaft body 33 will rotate at a high speed due to inertia and power, and the motor does not need to run at this time. Therefore, when the motor stops, the transmission assembly 34 exerts torque on the main shaft of the motor under the drive of the crankshaft body 33, which affects the life of the motor. Therefore, the transmission block 344 and the transmission rod 343 are connected by a one-way bearing, so that when the motor is running, the transmission assembly 34 can be output, and after the motor stops, the crankshaft body 33 rotates with the motor through the transmission assembly 34, which can effectively protect the life of the motor.

[0063] In a further preferred embodiment of the present invention, Figure 3 and Figure 5 As shown, the air intake assembly 14 includes an air intake interface 141, an air suction port 142 and an oil and gas pipe 143. The top of the base 1 is fixedly connected with the air intake interface 141, and the side wall of the base 1 is fixedly connected with the air suction port 142 and the oil and gas pipe 143. The air suction port 142 and the oil and gas pipe 143 are both connected to the air intake interface 141, and an air filter element 18 is detachably connected at the air suction port 142.

[0064] In this embodiment, since the piston assembly 3 needs to ignite oil and gas to keep the piston body 32 moving when in operation to simulate the actual use environment of the piston body 32, it is necessary to provide the compression chamber 7 with oil and gas that can be ignited.

[0065] So observe Figure 3It can be found that the top of the base 1 is connected to an air inlet interface 141, the side wall of the base 1 is fixedly connected to an air inlet 142 and an oil and gas pipe 143, the air inlet 142 and the oil and gas pipe 143 are both connected to the air inlet interface 141, and then combined Figure 5 It can be found that the air inlet 9 extends downward from one end of the compression chamber 7 and passes through the cylinder body 31, so that when the vacuum cover 4 is snapped with the base 1, the input end of the air inlet 9 at the bottom of the cylinder body 31 is connected with the air inlet interface 141. At this time, the air inlet 9 can suck the outside air and oil gas into the compression chamber 7 at the same time, which can be used to ensure the authenticity of the operating environment simulation of the piston body 32.

[0066] Since the outside air will carry dust, the high-precision compression chamber 7 will be damaged. Figure 3 It can also be found that an air filter element 18 is provided at the air inlet 142 , which can be used to filter the air and ensure the life of the compression chamber 7 .

[0067] As the use time of the air filter 18 increases, its filtering performance and air passing performance will weaken, which will affect the test results of the piston body 32. Therefore, in order to ensure the accuracy of the temperature test, the air filter 18 can be connected to the base 1 through a detachable connection method such as plugging in a plug and a socket or threading a bolt and a nut, so that the air filter 18 can be replaced more conveniently.

[0068] In a further preferred embodiment of the present invention, Figure 2 and Figure 6 As shown, the exhaust assembly 15 includes an exhaust pipe 151 and a plug-in block 152. The exhaust pipe 151 is fixedly connected to the inner wall of the detection chamber 5 and communicates with the outside. The exhaust pipe 151 is fixedly connected to the plug-in block 152 on one side close to the cylinder body 31. The plug-in block 152 is located on the outer side of the exhaust pipe 151 and is fixedly connected to a sealing ring 19.

[0069] A slot 20 for inserting the card plug-in block 152 is formed on the top of the cylinder body 31 .

[0070] In this embodiment, since the high-temperature air ignited in the compression chamber 7 needs to be discharged to the outside through the exhaust hole 10 to prevent the hot air from affecting the accuracy of the infrared temperature measuring unit 2, an exhaust pipe 151 connected to the outside is fixedly connected to the inner wall of the detection chamber 5, and then a card plug-in block 152 is fixedly connected to the side of the exhaust pipe 151 close to the cylinder body 31. At the same time, a slot 20 for inserting the card plug-in block 152 is provided on the top of the cylinder body 31, which can facilitate the connection between the cylinder body 31 and the exhaust assembly 15 when installing the piston kit 3, making the use of the infrared radiation temperature measuring device simpler and more convenient.

[0071] Since the detection chamber 5 is in a vacuum state, outside air will enter through the gap between the slot 20 and the card connector block 152. Therefore, in order to improve the sealing, a sealing ring 19 is fixedly connected to the side wall of the card connector block 152 on the outside of the exhaust pipe 151, which can further ensure the stability of the environment in the detection chamber 5.

[0072] Since the combustion time of oil and gas is too short and the combustion of oil and gas is incomplete, direct discharge of oil and gas will pollute the environment. Figure 1 It can be found that the exhaust gas can be filtered by connecting an oil and gas filter to the output port of the exhaust pipe 151, which can be used to protect the environment and enhance the environmental protection performance of the infrared radiation temperature measuring device.

[0073] In a further preferred embodiment of the present invention, Figure 2 and Figure 6 As shown, the top of the vacuum cover 4 is fixedly connected to a compressor 21, and the bottom of the compressor 21 extends into the detection cavity 5 and is fixedly connected to a wind cover 22;

[0074] A casing 23 is fixedly connected to the middle of the exhaust pipe 151, and a square groove 24 connected to the exhaust pipe 151 is defined in the casing 23. A through groove 25 connected to the square groove 24 is defined on one side of the outer wall of the casing 23. A sealing baffle 26 is hinged at the opening of the through groove 25 in the square groove 24, and a spring piece 27 for supporting the sealing baffle 26 is fixedly connected to the bottom of the square groove 24 away from the hinge.

[0075] In this embodiment, when the piston kit 3 is installed, dust from the outside will be brought into the detection chamber 5, thereby increasing the interference source of the infrared temperature measurement unit 2. Figure 2 and Figure 6 It can be found that a compressor 21 is fixedly connected to the top of the vacuum cover 4, and the output end of the compressor 21 extends into the detection chamber 5 and is fixedly connected to a wind cover 22. The compressor 21 can be used to input high-pressure air to flush the surface of the piston kit 3 to wash away the dust. Due to the input of air, the detection chamber 5 will be in a positive pressure state, which will affect the subsequent air input, resulting in incomplete cleaning of the dust. Therefore, the observation Figure 6 It can be found that a shell 23 is fixedly connected to the middle of the exhaust pipe 151, and a square groove 24 connected to the exhaust pipe 151 is opened in the shell 23, and a through groove 25 connected to the square groove 24 is opened on one side of the outer wall of the shell 23. A sealing partition 26 is hinged at the opening of the through groove 25 in the square groove 24, and a spring piece 27 for supporting the sealing partition 26 is fixedly connected to the side of the bottom of the square groove 24 away from the hinge. At this time, when the detection chamber 5 is in a positive pressure state, the air will squeeze the sealing partition 26 to enter the exhaust pipe 151 and be discharged through the exhaust pipe 151, so that the washed dust is also discharged through the exhaust pipe 151, which can effectively ensure the environment in the detection chamber 5.

[0076] The arrangement of the spring piece 27 can push the sealing partition 26 to block the through groove 25 after the air pressure in the detection chamber 5 is restored, thereby preventing air from entering the detection chamber 5 through the gap and destroying the vacuum environment when the detection chamber 5 is subsequently in a vacuum state. Embodiment 2

[0077] According to another aspect of the present invention, a piston test detection method is provided, which is used for the above-mentioned infrared radiation temperature measurement device.

[0078] The detection method of the piston test comprises the following steps:

[0079] S101, installing the piston body 32, the crankshaft body 33 and the transmission assembly 34 in the cylinder body 31 to obtain the piston kit 3;

[0080] S102, inserting the piston kit 3 into the detection chamber 5 through the bottom of the vacuum cover 4;

[0081] S103, sealingly connecting the piston kit 3 and the vacuum cover 4 by using the sealing connector 6;

[0082] S104, after aligning the bottom of the cylinder body 31 with the air inlet assembly 14 and the transmission protrusion 17 on the top of the base 1, the vacuum cover 4 is clamped on the top of the base 1;

[0083] S105, starting the motor to make the piston kit 3 run;

[0084] S106, monitoring the temperature of the piston kit 3 by the infrared temperature measuring unit 2;

[0085] S107 , recording the temperature data of the piston body 32 during operation, and completing the operating temperature monitoring of the piston body 32 .

[0086] Through the above scheme of the present invention, the real operating environment of the piston body 32 can be effectively simulated, so that the temperature detection data of the infrared temperature measuring unit 2 is more accurate and the detection efficiency is higher, ensuring the normal operation of the engine and extending its life.

[0087] Although 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. An infrared radiation temperature measuring device, characterized in that: It comprises a base (1), the top of the base (1) is clamped with a vacuum cover (4), and a detection cavity (5) is provided in the vacuum cover (4); An infrared temperature measuring unit (2) fixedly connected in the vacuum cover (4); A piston kit (3), comprising a cylinder body (31), a piston body (32), a crankshaft body (33) and a transmission assembly (34); the cylinder body (31) is inserted into a detection chamber (5) from the bottom of a vacuum cover (4) and is connected to the vacuum cover (4) via a sealing connector (6); a compression chamber (7) is provided in the cylinder body (31); the piston body (32) is slidably connected to the compression chamber (7); the bottom of the piston body (32) is connected to the crankshaft body (33) via a connecting rod; and a transmission assembly (34) connected to the crankshaft body (33) is provided on one side of the cylinder body (31); A spark plug (8) is fixedly connected to the center of the top of the compression chamber (7); an air inlet (9) and an air outlet (10) are respectively provided on both sides of the spark plug (8) at the top of the compression chamber (7); an air intake hole (11) communicating with the air inlet hole (9) is provided at the top of the cylinder body (31); a circular groove (12) is formed inwardly in the middle of the air intake hole (11); a sealing plug (13) is slidably connected in the circular groove (12); and a spring is fixedly connected between the bottom of the sealing plug (13) and the circular groove (12); An air intake assembly (14) is connected to the base (1), and an end of the air intake hole (9) away from the compression chamber (7) extends downward and is in communication with the air intake assembly (14); An exhaust component (15) is fixedly connected to the inner wall of the detection chamber (5), and an end of the exhaust hole (10) away from the compression chamber (7) is in communication with the exhaust component (15); The transmission assembly (34) comprises a driving gear (341), a driven gear (342), a transmission rod (343) and a transmission block (344); one side of the crankshaft body (33) is fixedly connected to the driven gear (342); the bottom of the driven gear (342) is meshed with the driving gear (341); the bottom of the driving gear (341) is fixedly connected to the transmission rod (343); the bottom end of the transmission rod (343) extends downward and is connected to the transmission block (344) via a one-way bearing; a motor is embedded in the base (1); the output shaft of the motor is fixedly connected to a transmission protrusion (17) that is engaged with the transmission block (344); The air intake assembly (14) comprises an air intake interface (141), an air suction port (142) and an oil and gas pipe (143); the top of the base (1) is fixedly connected to the air intake interface (141); the side wall of the base (1) is fixedly connected to the air suction port (142) and the oil and gas pipe (143); the air suction port (142) and the oil and gas pipe (143) are both connected to the air intake interface (141); and an air filter element (18) is detachably connected to the air suction port (142).

2. The infrared radiation temperature measuring device according to claim 1, characterized in that: The sealing connection member (6) comprises a connection substrate (61) and a sealing gasket (62); the connection substrate (61) is fixedly connected to the bottom of the outer wall of the cylinder body (31); a positioning groove (16) is formed at the bottom of the vacuum cover (4) and is fitted with the connection substrate (61); and the sealing gasket (62) is sandwiched between the connection substrate (61) and the positioning groove (16).

3. The infrared radiation temperature measuring device according to claim 1, characterized in that: The exhaust assembly (15) comprises an exhaust pipe (151) and a card-connecting plug-in block (152); the exhaust pipe (151) is fixedly connected to the inner wall of the detection chamber (5) and communicates with the outside; a card-connecting plug-in block (152) is fixedly connected to a side of the exhaust pipe (151) close to the cylinder body (31); and a sealing ring (19) is fixedly connected to the card-connecting plug-in block (152) located on the outer side of the exhaust pipe (151); A slot (20) for inserting a card insertion block (152) is provided on the top of the cylinder body (31).

4. The infrared radiation temperature measuring device according to claim 3, characterized in that: The top of the vacuum cover (4) is fixedly connected to a compressor (21), and the bottom of the compressor (21) extends into the detection cavity (5) and is fixedly connected to a wind cover (22).

5. The infrared radiation temperature measuring device according to claim 4, characterized in that: The exhaust pipe (151) is fixedly connected to a casing (23) in the middle thereof; a square groove (24) communicating with the exhaust pipe (151) is provided in the casing (23); a through groove (25) communicating with the square groove (24) is provided on one side of the outer wall of the casing (23); a sealing baffle (26) is hingedly connected to the opening of the through groove (25) in the square groove (24); and a spring sheet (27) for supporting the sealing baffle (26) is fixedly connected to the bottom of the square groove (24) on a side away from the hinge.

6. A piston test detection method, characterized in that: An infrared radiation temperature measuring device for use in any one of claims 1 to 5, comprising the following steps: S101, installing a piston body (32), a crankshaft body (33) and a transmission assembly (34) in a cylinder body (31) to obtain a piston assembly (3); S102, inserting the piston kit (3) into the detection chamber (5) through the bottom of the vacuum cover (4); S103, sealingly connecting the piston assembly (3) and the vacuum cover (4) using a sealing connection piece (6); S104, after aligning the bottom of the cylinder body (31) with the air intake assembly (14) and the transmission protrusion (17) on the top of the base (1), the vacuum cover (4) is clamped on the top of the base (1); S105, starting the motor to make the piston kit (3) run; S106, monitoring the temperature of the piston assembly (3) by means of an infrared temperature measuring unit (2); S107, recording temperature data of the piston body (32) during operation, and completing operating temperature monitoring of the piston body (32).

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