Automatic detection system for sealing performance of engine assembly

Abstract

The invention relates to the technical field of sealing detection, in particular to an automatic sealing detection system for an engine assembly, which comprises a box body, a suspension structure, a clamping structure, an air inlet structure, a water injection structure, a side sealing structure and a monitoring control unit. The engine assembly is positioned through the lower groove plate, the engine assembly is sealed through the clamping structure, air is introduced into the engine cylinder body through the air inlet structure, the air pressure difference is detected, and the air tightness of an engine is detected; the air pump is controlled by the barometer to input test air pressure into the cylinder body, the air pressure change is obtained by subsequently monitoring the air pressure, and the clamping force output by the pair of upper sealing covers of the hydraulic cylinder is adjusted through the air pressure change, so that the clamping force is controllable, and the detection effect is optimized; the engine assembly is detected through the monitoring control unit at the same time, the situation that multiple times of detection are needed due to the fact that only the sealing performance of one part can be measured in the detection process is avoided, and the efficiency of engine assembly sealing performance detection is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sealing detection, and in particular to an automatic sealing detection system for engine components. Background Art

[0002] An engine is a device that converts other forms of energy into mechanical energy. The internal combustion engine is the most commonly used one and is widely used in vehicles. It generates power by driving the piston to move through the high-temperature and high-pressure gas generated by burning fuel. Since high-temperature and high-pressure gas needs to be generated in the engine cylinder, very high requirements are placed on the sealing of the engine. The sealing of the cylinder head and valve needs to be verified through an airtightness test to verify whether the engine meets the requirements. If the sealing is unqualified, leakage will occur, resulting in insufficient pressure in the cylinder when working. Not only will the power of the engine be greatly reduced, but there is also a risk of oil leakage, which will have a serious impact on its use.

[0003] In the patent document of a diesel engine cylinder head water channel sealing detection device with the published application number 201811035119.7, it includes a frame, a water tank, a lifting mechanism, a pressurization and heating mechanism, an oscillation and impurity removal mechanism, and a bubble detection mechanism. By detecting the water channel sealing effect of the cylinder head under different pressure conditions, the purpose of automation and high efficiency can be achieved. However, the patent document has the following defects: 1. The high temperature and high pressure test generated outside the engine does not meet the air tightness required by the high temperature and high pressure generated inside the engine in reality; 2. The above mechanism cannot be adjusted during the detection process and is not controllable; 3. It can only determine whether the air tightness of the cylinder head is qualified, but cannot determine whether the bubbles are generated due to leakage of the engine valve, and the detection result is inaccurate. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the background technology and to propose an automatic sealing detection system for engine components.

[0005] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: an automatic sealing detection system for an engine assembly, comprising a box, a central console is arranged on one side of the box, a telescopic cylinder seat is fixedly installed in the box, a lower slot plate for positioning the engine is fixedly installed at the telescopic end of the telescopic cylinder seat, an engine assembly is placed on the lower slot plate, and the lower slot plate can move vertically along the telescopic cylinder seat; A suspension structure, used for driving the clamping structure to move, wherein the suspension structure is installed on the box body; A clamping structure, the clamping structure is used to cooperate with the lower groove plate to clamp and seal the engine component, and the clamping structure is fixedly installed on the suspension structure; An air intake structure, the air intake structure is used to generate air pressure in the engine assembly, and the air intake structure is installed in the box; A water injection structure, used to control the amount of water entering the box, the water injection structure is installed on the box; A side sealing structure, used for sealing the valve hole of the engine assembly, wherein the side sealing structure is installed in the box body; The clamping structure includes a hydraulic cylinder, a movable block, two symmetrical movable rods and two groups of symmetrical clamping units. The hydraulic cylinder is fixedly mounted on the upper sealing plate, the movable block is fixedly mounted on the telescopic end of the hydraulic cylinder, and the two movable rods are fixedly mounted on the movable block. The two movable rods correspond to the two groups of clamping units. Any clamping unit is composed of two clamping arms with a V-shaped structure. Any clamping arm is provided with a clamping groove with a V-shaped structure. The two ends of any movable rod respectively penetrate the clamping grooves of the two clamping arms corresponding thereto. A limit block with an I-shaped structure corresponding to the clamping arm is rotatably connected to the upper sealing cover, and the limit block is slidably connected to the corresponding clamping groove. The air intake structure includes an air pump, an air pressure gauge and an electric control valve 1. The air pump is arranged on the inner wall of the box body. An air groove is opened inside the upper sealing cover. The air pressure gauge and the electric control valve 1 are both connected to the air groove. The air pump and the electric control valve 1 are connected through a hose. The engine assembly is composed of a cylinder body and a cylinder head; The side sealing structure includes a second hydraulic cylinder, a blocking plate and a guide rod, the second hydraulic cylinder is fixedly connected to the box body, the bottom plate is fixedly installed on the telescopic end of the second hydraulic cylinder, and the two ends of the guide rod are respectively fixedly connected to the blocking plate and the inner wall of the box body; A refractometer is fixedly mounted on the box, and a lens of the refractometer is mounted in the box; A monitoring and control unit is arranged in the center console, which includes an air pressure detection processing unit and an optical detection processing unit. The air pressure detection processing unit is used to implement the first detection scheme, obtain the air pressure of the barometer, control the delivery volume of the air pump, and control the output pressure of hydraulic cylinder one; the optical detection processing unit is used to implement the second detection scheme, obtain the refractive index of the water body obtained by refractometer analysis and control the operation of hydraulic cylinder two.

[0006] In the above-mentioned automatic sealing detection system for engine components, the processing steps of the air pressure detection processing unit are as follows: Step 1: Control the air pump to input the standard test air pressure P1 into the engine assembly, and delay 10 seconds to obtain the delayed monitoring air pressure P2 of the pressure gauge; Step 2: Use the formula The air pressure monitoring rate Pa is calculated; If Pa is not greater than 1, it is determined that the engine cylinder head seal is good and a first qualified inspection label is generated; if Pa is greater than 1, it is determined that the engine seal is abnormal and an adjustment label is generated; Step 3: Use the formula The output pressure of hydraulic cylinder 1 is calculated; F0 is the preset input pressure; u is the pressure increase value, which is set to 100N and is determined according to the air pressure monitoring value Pa; k is a positive integer, k=0, 1, 2, 3, ..., 20; Set the pressure judgment value Fu. The relationship between the pressure judgment value Fu and the air pressure monitoring rate Pa satisfies the function: ; Step 4: Implement the second detection scheme according to the first detection qualified label; control the air pump input to the cylinder body to reach the standard deviation test air pressure P1 according to the adjustment label, and adjust the value of k to control the pressure output by the hydraulic cylinder 1; each time the k value is adjusted, the pressure judgment value Fu is traced and analyzed and the cylinder body is adjusted to reach the standard air pressure P1; if the pressure judgment value Fu is -1, record the current output pressure F of the hydraulic cylinder 1 and stop adjusting; if the pressure judgment value Fu is -2, continue to adjust the value of k, and if the pressure judgment value Fu is still -1, generate a detection abnormality label; If Pa is not greater than 1, it is determined that the engine cylinder head seal is good and an adjustment effective label is generated; if Pa is greater than 1, it is determined that the engine cylinder head seal is abnormal and a first detection unqualified label is generated; Step 5: Implement the above second detection scheme based on adjusting the valid labels and the labels that failed the first detection.

[0007] In the above-mentioned automatic sealing detection system for engine components, the processing steps of the optical detection processing unit are as follows: Step 1: Control the hydraulic cylinder 2 to loosen the blocking plate 61, and obtain the water body refractive index N obtained by the refractometer analysis after 1 minute; Step 2: Use the formula The refractive ratio Nc of the water body is calculated; Ns is the standard refractive index of the water body; if the refractive ratio Nc is not greater than 1, it is determined that the engine valve seal is good and a second qualified detection label is generated; if the refractive ratio Nc is greater than 1, it is determined that the engine valve seal is abnormal and a second unqualified detection label is generated; According to the first inspection qualified label and the second inspection qualified label, it is determined that the cylinder head and the valve of the engine assembly are both well sealed; According to the adjustment effective label and the second inspection qualified label, it is determined that the cylinder head and valve of the engine assembly are well sealed; Determining whether the cylinder head seal of the engine assembly is good and the valve seal is unqualified according to the first qualified inspection label and the second unqualified inspection label; Determining whether the cylinder head seal of the engine assembly is unqualified and the valve seal is good according to the first unqualified test label and the second qualified test label; It is determined that the cylinder head valve seals of the engine assembly are both unqualified based on the first unqualified detection label and the second unqualified detection label.

[0008] In the above-mentioned automatic sealing detection system for engine components, the suspension structure includes a cylinder, a C-shaped mounting plate, and an upper sealing cover. The cylinder is fixedly mounted on the inner wall of the box body, the mounting plate is fixedly connected to the telescopic end of the cylinder, and the upper sealing cover is fixedly connected to the mounting plate.

[0009] In the above-mentioned automatic sealing detection system for an engine component, the engine component is composed of a cylinder block and a cylinder head.

[0010] In the above-mentioned automatic sealing detection system for engine components, the water injection structure includes a water inlet and a water outlet arranged on the box body and a water level gauge arranged in the box body, and an electric control valve 2 is arranged at the water outlet.

[0011] Compared with the prior art, the advantages of the present invention are: 1. Position the engine assembly through the lower groove plate, drive the clamping structure to move through the suspension structure, seal the engine assembly through the upper sealing cover, ventilate the engine cylinder through the intake structure, and detect the ventilation pressure difference through the intake structure to detect the air tightness of the engine.

[0012] 2. The air pump is controlled by a pressure gauge to input the test air pressure into the cylinder body. The air pressure change is obtained by subsequent monitoring of the air pressure. The clamping force output by the hydraulic cylinder pair on the upper sealing cover is adjusted according to the air pressure change, so that the clamping force can be controlled and the detection effect is optimized.

[0013] 3. The engine components are tested simultaneously by the air pressure detection processing unit and the optical detection processing unit, avoiding the situation where only the sealing of one part can be measured during the detection, which requires multiple tests, thereby improving the efficiency of the engine component sealing detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the planar structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the planar structure of the side sealing structure of the present invention.

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the clamping structure of the present invention.

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the engine assembly of the present invention.

[0018] Figure 5 It is a schematic cross-sectional structural diagram of an engine assembly of the present invention.

[0019] Figure 6 It is a control flow chart of the present invention.

[0020] In the figure: 1. Box body; 11. Center console; 12. Telescopic cylinder seat; 13. Lower groove plate; 2. Engine assembly; 21. Cylinder body; 22. Cylinder head; 3. Cylinder; 31. Mounting plate; 32. Upper sealing cover; 4. Hydraulic cylinder one; 41. Movable block; 42. Movable rod; 43. Clamping arm; 44. Clamping groove; 33. Limit block; 5. Air pump; 51. Pressure gauge; 52. Electric control valve one; 34. Air groove; 14. Water inlet; 15. Water outlet; 16. Water level gauge; 17. Electric control valve two; 6. Hydraulic cylinder two; 61. Blocking plate; 62. Guide rod; 7. Refractometer. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] Example 1: Reference Figure 1-Figure 2, an automatic sealing detection system for an engine component, comprising a box body 1, a central console 11 is arranged on one side of the box body 1, a telescopic cylinder seat 12 is fixedly installed in the box body 1, a lower slot plate 13 for positioning the engine is fixedly installed at the telescopic end of the telescopic cylinder seat 12, an engine component 2 is placed on the lower slot plate 13, and the lower slot plate 13 can move vertically along the telescopic cylinder seat 12; a suspension structure, used to drive the clamping structure to move, the suspension structure is installed on the box body 1; a clamping structure, the clamping structure is used to cooperate with the lower slot plate 13 to clamp and seal the engine component 2, and the clamping structure is fixedly installed on the suspension structure; an intake structure, the intake structure is used to generate air pressure in the engine component 2, and the intake structure is installed in the box body 1 ; A water injection structure is used to control the amount of water entering the casing 1, and the water injection structure is installed on the casing 1; a side sealing structure is used to seal the valve hole of the engine assembly 2, and the side sealing structure is installed in the casing 1; the engine assembly 2 is positioned by the lower groove plate 13, and the clamping structure is driven to move to a specified position by the suspension structure, and the engine assembly 2 is clamped by the clamping structure to seal the upper surface of the engine assembly 2, and air is ventilated into the engine assembly 2 through the air intake structure to test the sealing performance of the engine assembly 2; a specified amount of water is injected into the casing 1 through the water injection structure, and the engine assembly 2 is filled with soluble test pigments to further test the sealing performance of the engine assembly 2.

[0024] Reference Figure 1-Figure 2 The suspension structure includes a cylinder 3, a C-shaped mounting plate 31, and an upper sealing cover 32. The cylinder 3 is fixedly mounted on the inner wall of the box body 1. The mounting plate 31 is fixedly connected to the telescopic end of the cylinder 3. The upper sealing cover 32 is fixedly connected to the mounting plate 31. The mounting plate 31 and the upper sealing cover 32 are driven downward by the cylinder 3, so that the upper sealing cover 32 contacts the engine assembly 2 to achieve a sealing effect.

[0025] Reference Figure 1-Figure 3 The clamping structure includes a hydraulic cylinder 4, a movable block 41, two symmetrical movable rods 42 and two groups of symmetrical clamping units. The hydraulic cylinder 4 is fixedly mounted on the upper sealing plate, the movable block 41 is fixedly mounted on the telescopic end of the hydraulic cylinder 4, and the two movable rods 42 are fixedly mounted on the movable block 41. The two movable rods 42 correspond to the two groups of clamping units. Any clamping unit is composed of two clamping arms 43 with a V-shaped structure. Any clamping arm 43 is provided with a clamping groove 44 with a V-shaped structure. The two ends of any movable rod 42 respectively penetrate the clamping grooves 44 of the two clamping arms 43 corresponding thereto. A limit block 33 with an I-shaped structure corresponding to the clamping arm 43 is rotatably connected to the upper sealing cover 32. The limit block 33 is slidably connected to the corresponding clamping groove 44. The movable block 41 and the movable rod 42 are driven upward by the hydraulic cylinder 4, and then the clamping arm 43 is driven upward. When the movable rod 42 is as Figure 1When the end of the clamping groove 44 is abutted, the clamping arm 43 simultaneously abuts against the lower groove plate 13, and a clamping force is generated between the upper sealing cover 32 and the lower groove plate 13 through the clamping arm 43, thereby sealing the engine assembly 2. When the hydraulic rod is reset, the movable block 41 and the movable rod 42 are driven to move downward, and the clamping arm 43 is moved downward a specified distance and separated from the lower groove plate 13 under the action of gravity. At the same time, the clamping arm 43 is rotated under the action of the movable rod 42 and the limit block 33, so as to avoid the suspension structure from being blocked by the lower groove plate 13 when driving the clamping structure upward, thereby facilitating the suspension structure to drive the engine assembly 2 upward.

[0026] Reference Figure 1 The air intake structure includes an air pump 5, a pressure gauge 51 and an electric control valve 52. The air pump 5 is arranged on the inner wall of the box body 1. An air groove 34 is opened in the upper sealing cover 32. The pressure gauge 51 and the electric control valve 52 are both connected to the air groove 34. The air pump 5 and the electric control valve 52 are connected by a hose. When the electric control valve 52 is opened, gas is input into the air groove 34 through the air pump 5 until the test air pressure in the air groove 34 is reached. The electric control valve 52 is closed, and the air pressure is measured again by the pressure gauge 51 to detect whether there is an air leakage. If the air pressure difference is higher than the preset value, it can be determined that the sealing of the engine component 2 is unqualified, or the sealing pressure of the upper sealing cover 32 is insufficient. By adjusting the output pressure of the hydraulic cylinder 4, the sealing factor of the upper sealing cover 32 is eliminated, and a further accurate detection result is obtained. At the same time, the output pressure of the hydraulic cylinder 4 is controllable, thereby optimizing the detection effect.

[0027] Reference Figure 5 The engine assembly 2 is composed of a cylinder body 21 and a cylinder head 22. The port of the water channel of the engine assembly 2 is sealed by the existing sealing technology. A valve is arranged in the cylinder head 22. An air inlet is arranged on the outer wall of the cylinder head 22. The air inlet is connected to the valve. A soluble test pigment is arranged in the cylinder head 22 and located at the valve. The liquid level of the soluble test pigment is lower than the height of the cylinder head 22, which is used to test the sealing of the valve.

[0028] Reference Figure 1 The water injection structure includes a water inlet 14, a water outlet 15 and a water level gauge 16 arranged on the box body 1. An electric control valve 17 is arranged at the water outlet 15 to control the water volume to just cover the side sealing structure. When the seal between the cylinder body 21 and the cylinder cover 22 is unqualified and causes air leakage, it is convenient to observe the generation of bubbles in the water. When the soluble test pigment enters the box body 1 through the air inlet hole, it reflects that the sealing of the valve is unqualified.

[0029] Reference Figure 2The side sealing structure includes a hydraulic cylinder 26, a blocking plate 61 and a guide rod 62. The hydraulic cylinder 26 is fixedly connected to the box body 1, and the bottom plate is fixedly installed on the telescopic end of the hydraulic cylinder 26. The two ends of the guide rod 62 are respectively fixedly connected to the blocking plate 61 and the inner wall of the box body 1. By controlling the hydraulic cylinder 26 to make the blocking plate 61 contact with the engine assembly 2, the sealing between the cylinder body 21 and the cylinder head 22 can be preferentially detected. By controlling the blocking plate 61 to be separated from the engine assembly 2, the sealing of the valve can be detected.

[0030] Reference Figure 1 A refractometer 7 is fixedly mounted on the box 1 , and a lens of the refractometer 7 is mounted inside the box 1 . The refractometer 7 is used to detect the refractive index of the water body. When the soluble test pigment enters the box 1 through the air inlet, the refractive index of the water body will change and be measured by the refractometer 7 .

[0031] Example 2: Reference Figure 6 A monitoring control unit is provided in the central console 11, and the monitoring control unit includes an air pressure detection processing unit and an optical detection processing unit. The air pressure detection processing unit is used to implement the first detection scheme, obtain the air pressure of the barometer 51, control the delivery volume of the air pump 5, and control the output pressure of the hydraulic cylinder 1 4; the optical detection processing unit is used to implement the second detection scheme, obtain the refractive index of the water body obtained by the refractometer 7 and control the operation of the hydraulic cylinder 2 6; The processing steps of the air pressure detection processing unit are as follows: Step 1: Control the air pump 5 to input the standard test air pressure P1 into the engine assembly 2, and obtain the delayed monitoring air pressure P2 of the barometer 51 after a delay of 10 seconds; Step 2: Use the formula The air pressure monitoring rate Pa is calculated; If Pa is not greater than 1, it is determined that the engine cylinder head 22 is well sealed and a first qualified inspection label is generated; if Pa is greater than 1, it is determined that the engine seal is abnormal and an adjustment label is generated; Step 3: Use the formula The output pressure of hydraulic cylinder 4 is calculated; F0 is the preset input pressure; u is the pressure increase value, which is set to 100N and is determined according to the air pressure monitoring value Pa; k is a positive integer, k=0, 1, 2, 3, ..., 20; Set the pressure judgment value Fu. The relationship between the pressure judgment value Fu and the air pressure monitoring rate Pa satisfies the function: ; Step 4: Implement the second detection scheme according to the first detection qualified label; control the air pump 5 to input the cylinder body 21 to reach the standard deviation test air pressure P1 according to the adjustment label, and adjust the value of k to control the pressure output by the hydraulic cylinder 4; the value of k can be adjusted from 0 to 20, and each time the k value is adjusted, the pressure judgment value Fu is traced and analyzed, and the cylinder body 21 is adjusted to reach the standard air pressure P1; if the pressure judgment value Fu is -1, record the current output pressure F of the hydraulic cylinder 4 and stop adjusting; if the pressure judgment value Fu is -2, continue to adjust the value of k, if the pressure judgment value Fu is still -1 when the value of k reaches 20, then generate a detection abnormality label; the recorded output pressure F can continue to be used in subsequent tests on the same model of engine; If Pa is not greater than 1, it is determined that the engine cylinder head 22 is well sealed and an adjustment effective label is generated; if Pa is greater than 1, it is determined that the engine cylinder head 22 is abnormally sealed and a first detection unqualified label is generated; Step 5: Implement the above second testing plan based on adjusting the valid labels and the labels that failed the first test; The processing steps of the optical detection processing unit are as follows: Step 1: Control the hydraulic cylinder 2 6 to loosen the blocking plate 61, and obtain the water body refractive index N analyzed by the refractometer 7 after 1 minute; Step 2: Use the formula The refractive ratio Nc of the water body is calculated; Ns is the standard refractive index of the water body; if the refractive ratio Nc is not greater than 1, it is determined that the engine valve seal is good and a second qualified detection label is generated; if the refractive ratio Nc is greater than 1, it is determined that the engine valve seal is abnormal and a second unqualified detection label is generated; According to the first qualified inspection label and the second qualified inspection label, it is determined that the cylinder head 22 and the valve of the engine assembly 2 are both well sealed; According to the adjustment effective label and the second inspection qualified label, it is determined that the cylinder head 22 and the valve of the engine assembly 2 are both well sealed; Determine whether the cylinder head 22 of the engine assembly 2 is well sealed and whether the valve seal is unqualified according to the first qualified inspection label and the second unqualified inspection label; According to the first unqualified inspection label and the second qualified inspection label, it is determined that the cylinder head 22 of the engine assembly 2 has unqualified sealing and the valve sealing is good; According to the first unqualified detection label and the second unqualified detection label, it is determined that the valve seals of the cylinder head 22 of the engine assembly 2 are both unqualified.

[0032] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic sealing detection system for engine components, characterized in that: include: A box body (1), wherein a central console (11) is arranged on one side of the box body (1), a telescopic cylinder seat (12) is fixedly installed in the box body (1), a lower groove plate (13) for positioning the engine is fixedly installed at the telescopic end of the telescopic cylinder seat (12), an engine assembly (2) is placed on the lower groove plate (13), and the lower groove plate (13) can move vertically along the telescopic cylinder seat (12); A suspension structure, used to drive the clamping structure to move, the suspension structure being mounted on the box body (1); A clamping structure, the clamping structure being used to cooperate with the lower groove plate (13) to clamp and seal the engine component (2), the clamping structure being fixedly mounted on the suspension structure; An air intake structure, the air intake structure being used to generate air pressure in the engine assembly (2), the air intake structure being installed in the box body (1); A water injection structure, used to control the amount of water entering the box (1), the water injection structure being mounted on the box (1); A side sealing structure, used for sealing a valve hole of an engine component (2), wherein the side sealing structure is installed in the housing (1); The clamping structure comprises a hydraulic cylinder (4), a movable block (41), two symmetrical movable rods (42) and two groups of symmetrical clamping units, wherein the hydraulic cylinder (4) is fixedly mounted on an upper sealing plate, the movable block (41) is fixedly mounted on a telescopic end of the hydraulic cylinder (4), the two movable rods (42) are fixedly mounted on the movable block (41), the two movable rods (42) correspond to the two groups of clamping units, each clamping unit is composed of two clamping arms (43) of a V-shaped structure, each clamping arm (43) is provided with a clamping groove (44) of a V-shaped structure, the two ends of each movable rod (42) respectively penetrate the clamping grooves (44) of the two clamping arms (43) corresponding thereto, and the upper sealing cover (32) is rotatably connected with a limit block (33) of an I-shaped structure corresponding to the clamping arm (43), and the limit block (33) is slidably connected to the corresponding clamping groove (44); The air intake structure comprises an air pump (5), an air pressure gauge (51) and an electric control valve (52); the air pump (5) is arranged on the inner wall of the box body (1); an air groove (34) is provided inside the upper sealing cover (32); the air pressure gauge (51) and the electric control valve (52) are both connected to the air groove (34); and the air pump (5) and the electric control valve (52) are connected via a hose; The engine assembly (2) is composed of a cylinder body (21) and a cylinder head (22); The side sealing structure comprises a second hydraulic cylinder (6), a blocking plate (61) and a guide rod (62); the second hydraulic cylinder (6) is fixedly connected to the box body (1); the bottom plate is fixedly mounted on the telescopic end of the second hydraulic cylinder (6); and the two ends of the guide rod (62) are respectively fixedly connected to the blocking plate (61) and the inner wall of the box body (1); A refractometer (7) is fixedly mounted on the box (1), and a lens of the refractometer (7) is mounted inside the box (1); A monitoring control unit is provided in the central control console (11), and the monitoring control unit comprises an air pressure detection processing unit and an optical detection processing unit. The air pressure detection processing unit is used to implement a first detection scheme, obtain the air pressure of the barometer (51), control the delivery volume of the air pump (5), and control the output pressure of the hydraulic cylinder one (4); the optical detection processing unit is used to implement a second detection scheme, obtain the refractive index of the water body obtained by analyzing the refractometer (7) and control the operation of the hydraulic cylinder two (6).

2. The automatic sealing detection system for engine components according to claim 1, characterized in that: The processing steps of the air pressure detection processing unit are as follows: Step 1: Control the air pump (5) to input the standard test air pressure P1 into the engine assembly (2), and obtain the delayed monitoring air pressure P2 of the air pressure gauge (51) after a delay of 10 seconds; Step 2: Use the formula The air pressure monitoring rate Pa is calculated; If Pa is not greater than 1, it is determined that the engine cylinder head (22) is well sealed and a first inspection qualified label is generated; If Pa is greater than 1, the engine seal is judged to be abnormal and an adjustment tag is generated; Step 3: Use the formula Calculate the output pressure of hydraulic cylinder 1 (4); F0 is the preset input pressure; u is the pressure increase value, which is set to 100N and is determined according to the air pressure monitoring value Pa; k is a positive integer, k=0, 1, 2, 3, ..., 20; Set the pressure judgment value Fu. The relationship between the pressure judgment value Fu and the air pressure monitoring rate Pa satisfies the function: ； Step 4: Implement the second detection scheme according to the first detection qualified label; control the air pump (5) to input to the cylinder body (21) to reach the standard deviation test air pressure P1 according to the adjustment label, and adjust the value of k to control the pressure output by the hydraulic cylinder 1 (4); the value of k can be adjusted from 0 to 20, and each time the k value is adjusted, the pressure judgment value Fu is traced and analyzed and the cylinder body (21) is adjusted to reach the standard air pressure P1; if the pressure judgment value Fu is -1, record the current output pressure F of the hydraulic cylinder 1 (4) and stop adjusting; if the pressure judgment value Fu is -2, continue to adjust the value of k, and if the pressure judgment value Fu is still -1, generate a detection abnormality label; If Pa is not greater than 1, it is determined that the engine cylinder head (22) is well sealed and an adjustment effective label is generated; if Pa is greater than 1, it is determined that the engine cylinder head (22) is abnormally sealed and a first detection unqualified label is generated; Step 5: Implement the above second detection scheme based on adjusting the valid labels and the labels that failed the first detection.

3. The automatic sealing detection system for engine components according to claim 2, characterized in that: The processing steps of the optical detection processing unit are as follows: Step 1: Control the hydraulic cylinder 2 (6) to loosen the blocking plate 61, and obtain the water refractive index N analyzed by the refractometer (7) after 1 minute; Step 2: Use the formula The refractive ratio Nc of the water body is calculated; Ns is the standard refractive index of the water body; if the refractive ratio Nc is not greater than 1, it is determined that the engine valve is well sealed and a second qualified detection label is generated; If the refraction ratio Nc is greater than 1, it is determined that the engine valve seal is abnormal and a second detection failure label is generated; Determining, based on the first qualified inspection label and the second qualified inspection label, that the cylinder head (22) and the valve of the engine assembly (2) are both well sealed; Determining that the cylinder head (22) and the valve of the engine assembly (2) are both well sealed according to the adjustment effective label and the second inspection qualified label; Determining whether the cylinder head (22) of the engine assembly (2) is well sealed and whether the valve seal is unqualified based on the first qualified inspection label and the second unqualified inspection label; Determining whether the cylinder head (22) of the engine assembly (2) has an unqualified seal and whether the valve seal is good according to the first unqualified test label and the second qualified test label; It is determined that the valve seals of the cylinder head (22) of the engine assembly (2) are both unqualified according to the first unqualified detection label and the second unqualified detection label.

4. The automatic sealing detection system for engine components according to claim 1, characterized in that: The suspension structure comprises a cylinder (3), a C-shaped mounting plate (31), and an upper sealing cover (32); the cylinder (3) is fixedly mounted on the inner wall of the box body (1); the mounting plate (31) is fixedly connected to the telescopic end of the cylinder (3); and the upper sealing cover (32) is fixedly connected to the mounting plate (31).

5. The automatic sealing detection system for engine components according to claim 1, characterized in that: The water injection structure comprises a water inlet (14), a water outlet (15) arranged on the box body (1), and a water level gauge (16) arranged in the box body (1); a second electric control valve (17) is arranged at the water outlet (15).

Images