A supercharged intercooler connection sealing test device and detection method

Abstract

The present invention relates to the field of sealing detection, and specifically to a sealing test device and a detection method for a connection of a supercharged intercooler, comprising: a detection platform, wherein two groups of connecting pipes are arranged on the detection platform, and two ends of the intercooler to be detected placed on the detection platform are respectively sealed and connected with the two groups of connecting pipes; a No. 1 pump air tank and a No. 2 pump air tank are connected with one of the groups of connecting pipes, and the inner diameter of the No. 1 pump air tank is larger than the inner diameter of the No. 2 pump air tank; a driving member, which is arranged in two groups and is respectively sealed and slidably connected with the inner walls of the No. 1 pump air tank and the No. 2 pump air tank; a power assembly, which is arranged on the detection platform, and the power assembly has a first state and a second state that are switched when triggered; a detection assembly, which is connected with another group of connecting pipes and is adapted to a second cam shaft arranged on the power assembly, and the detection assembly can trigger the second cam shaft to move after the pressure in the intercooler to be detected reaches a preset value, so that the power assembly is switched from the first state to the second state, thereby improving the inflation accuracy.

Description

Technical Field

[0001] The invention relates to the field of sealing detection, in particular to a sealing test device and a detection method for a connection of a supercharged intercooler. Background Art

[0002] The main function of the intercooler is to cool the pressurized air and reduce its temperature, thereby improving the efficiency and performance of the engine. This also requires the intercooler to have good sealing to prevent gas leakage and ensure the cooling effect.

[0003] Therefore, after the intercooler is produced, it is necessary to carry out necessary sealing inspection on it. In order to make the inspection result more intuitive, it is generally necessary to establish the rated air pressure that the intercooler can withstand. This is mainly based on two considerations. First, under the rated air pressure, if the intercooler has air leakage and pressure release, the pressure release phenomenon at this time is the most obvious and easiest to detect. Second, if the air pressure established in the intercooler exceeds its rated air pressure, even if pressure release occurs at this time, it does not mean that the air tightness of the intercooler is not good under the rated air pressure, but it may be due to overcharging that causes the internal connection of the intercooler to rupture and cause pressure release. Therefore, for the sealing inspection of the intercooler, whether the internal air pressure of the intercooler is at the rated air pressure state is crucial.

[0004] As for the existing intercooler sealing detection equipment, most of the air pumping devices that assist in establishing the internal pressure of the intercooler are equipped with an air pressure sensor. The air pressure sensor controls the operation of the air pumping device by detecting the pressure inside the intercooler, so that when the pressure inside the intercooler reaches the rated value, it can buffer the pumping air and stop the pumping air in time. However, the air pressure sensor is affected by external factors and has a problem of reduced accuracy. At this time, it is easy to cause the intercooler to be overcharged, resulting in unrepresentative detection results. Summary of the invention

[0005] The object of the present invention is to provide a supercharged intercooler connection sealing test device and detection method 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] A supercharged intercooler connection sealing test device, comprising:

[0008] A testing platform, wherein two groups of connecting pipes are arranged on the testing platform, and two ends of the intercooler to be tested placed on the testing platform are respectively sealed and connected to the two groups of connecting pipes;

[0009] A No. 1 pump gas tank and a No. 2 pump gas tank are connected to one set of the connecting pipes, and the inner diameter of the No. 1 pump gas tank is larger than the inner diameter of the No. 2 pump gas tank;

[0010] The driving member is provided with two groups and is respectively connected in sealing and sliding manner to the inner wall of the No. 1 pump gas tank and the No. 2 pump gas tank;

[0011] A power assembly is arranged on the detection platform, and the power assembly has a first state and a second state that are switched when triggered. When the power assembly is in the first state, one group of the driving members can be driven to move in the first pump gas tank, and when the power assembly is in the second state, another group of the driving members can be driven to move in the second pump gas tank;

[0012] A detection component is connected to another set of the connecting pipes and is adapted to a second cam shaft arranged on the power component. After the pressure in the intercooler to be detected reaches a preset value, the detection component can trigger the action of the second cam shaft to switch the power component from the first state to the second state.

[0013] As a further solution of the present invention: the driving member comprises two sets of sealing plugs which are sealingly and slidingly connected to the inner walls of the No. 1 pump gas tank and the No. 2 pump gas tank, the two sets of sealing plugs are connected to connecting shafts, and the ends of the two sets of connecting shafts away from the sealing plugs are rotatably mounted with hinged rods, and the hinged rods are rotatably connected to the two sets of first gears arranged on the detection platform;

[0014] Two sets of the first gears are adapted to the power assembly.

[0015] As a further solution of the present invention: the power assembly comprises a bracket slidably mounted on the detection table, a driving device is fixedly mounted on the bracket, and a second gear adapted to the two groups of the first gears is connected to the output shaft of the driving device;

[0016] The power assembly also includes an energy storage structure connected to the bracket and a side plate connected to the detection platform. The end of the energy storage structure is rotatably mounted with a first convex shaft coaxial with the second convex shaft, and the first convex shaft is rollingly matched with a limiting groove arranged on the side plate.

[0017] As a further solution of the present invention: the energy storage structure includes a hysteresis tube fixedly connected to the bracket, a telescopic shaft rotatably installed in the hysteresis tube and rotatably connected to the first cam shaft, a limiting ring is provided on the telescopic shaft, and a first spring is sleeved on the telescopic shaft.

[0018] As a further solution of the present invention: the limiting groove includes a first vertical groove and a second vertical groove which are arranged on the side plate and are parallel to each other, and the upper ends of the first vertical groove and the second vertical groove are connected by an inclined groove.

[0019] As a further solution of the present invention: the detection component includes:

[0020] A hysteresis cylinder body is fixedly mounted on the detection platform, wherein a first hysteresis cylinder and a second hysteresis cylinder are formed in the hysteresis cylinder body, and the inner diameter of the first hysteresis cylinder is greater than the inner diameter of the second hysteresis cylinder;

[0021] The piston group arranged in the hysteresis cylinder body can be adapted to the first hysteresis cylinder and the second hysteresis cylinder respectively;

[0022] A trigger assembly is connected to the piston group, and the trigger assembly can drive the second cam shaft to move.

[0023] As a further solution of the present invention: the piston group includes a first retardation plug adapted to the second retardation cylinder and a second retardation plug adapted to the first retardation cylinder, a first conical surface is formed on the outer side of the first retardation plug, and the first conical surface is adapted to a second conical surface arranged on the inner side of the second retardation plug;

[0024] The piston group further comprises a follower shaft coaxial with the first hysteresis plug, and the follower shaft is connected to an annular connecting member arranged on the hysteresis cylinder body through a second spring.

[0025] As a further solution of the present invention: the trigger assembly includes a connecting plate detachably connected to the follower shaft, and an inclined guiding surface adapted to the second convex shaft is formed on the connecting plate;

[0026] The trigger assembly also includes a support rod rotatably mounted on the side plate, one end of the support rod is adapted to the second convex shaft, and the other end of the support rod is adapted to the abutment shaft rotatably mounted on the link plate.

[0027] A method for detecting the sealing performance of a connection of a supercharged intercooler using the sealing test device comprises the following steps:

[0028] Step 1: Place the intercooler to be tested on the testing table, and connect the two ends of the intercooler to the two sets of connecting pipes respectively;

[0029] Step 2: Control the power assembly to move, and the power assembly first causes a set of driving parts to move in the No. 1 pump gas tank to quickly fill the intercooler to be tested with gas;

[0030] Step 3: As the amount of gas charged into the intercooler to be tested increases, the detection component will be activated, and when the detection component abuts against the second cam, the power component switches from the first state to the second state, at which time the power component drives another set of driving components to operate in the second pump gas tank, and the gas is slowly charged into the intercooler to be tested;

[0031] Step 4: When the air pressure in the intercooler to be tested reaches a preset value, the power component is controlled to stop working;

[0032] Step 5: Observe the changes in pressure inside the intercooler to be tested.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] By setting the No. 1 pump gas tank and the No. 2 pump gas tank, the driving member and the power assembly, when the second gear is respectively meshed with the two sets of first gears, the driving members in the No. 1 pump gas tank and the No. 2 pump gas tank can be respectively actuated, thereby achieving different pumping air speeds. Based on this, on the one hand, the intercooler to be tested can be quickly punched, shortening the time for injecting compressed air into the intercooler to be tested, and on the other hand, when the pressure in the intercooler to be tested is about to reach the rated value, it can be slowly inflated, so that the inspector can control the driving member to stop the action in time when the pressure in the intercooler to be tested reaches the preset value, thereby avoiding the phenomenon of overcharging inside the intercooler to be tested;

[0035] By setting up the detection component, when the second gear is respectively meshed with the two sets of first gears, the driving members in the No. 1 pump gas tank and the No. 2 pump gas tank can be respectively activated, so as to achieve different pumping speeds. Based on this, on the one hand, the intercooler to be detected can be quickly punched, and the time for injecting compressed air into the intercooler to be detected can be shortened. On the other hand, when the pressure in the intercooler to be detected is about to reach the rated value, it can be slowly inflated, so that the detection personnel can control the driving member to stop the action in time when the pressure in the intercooler to be detected reaches the preset value, so as to avoid the phenomenon of overcharging inside the intercooler to be detected.

[0036] By setting up a trigger assembly, when the pressure in the intercooler to be inspected reaches a preset value, the connecting plate can cooperate with the second cam shaft to make the first cam shaft perform a position switching action to reduce the speed of delivering compressed gas toward the intercooler to be inspected, and after the detection is completed, the abutment shaft can cooperate with the support rod to push the first cam shaft out of the second vertical groove, so that when resetting the second gear, it is only necessary to push the bracket, thereby reducing the difficulty of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 The present invention is a structural schematic diagram of an embodiment of a supercharged intercooler connection sealing test device.

[0038] Figure 2 This is a schematic structural diagram from another angle of an embodiment of a supercharged intercooler connection sealing test device.

[0039] Figure 3 This is a schematic diagram of the structure of a No. 1 pump gas tank, a No. 2 pump gas tank, a driving part and a power assembly in one embodiment of a supercharged intercooler connection sealing test device.

[0040] Figure 4This is a schematic diagram of the internal structure of the No. 2 pump gas tank in an embodiment of a supercharged intercooler connection sealing test device.

[0041] Figure 5 This is a structural schematic diagram of the energy storage structure and side panels in one embodiment of a supercharged intercooler connection sealing test device.

[0042] Figure 6 This is a structural schematic diagram of the energy storage structure in one embodiment of a supercharged intercooler connection sealing test device.

[0043] Figure 7 The present invention is a schematic diagram of the structure of the detection assembly and the connecting plate in one embodiment of a supercharged intercooler connection sealing test device.

[0044] Figure 8 This is a schematic diagram of the structure of the second cam after the connecting plate is reset in one embodiment of a supercharged intercooler connection sealing test device.

[0045] Fig. 9 This is a schematic diagram of the structure of the detection component in one embodiment of a supercharged intercooler connection sealing test device.

[0046] Fig.10 The diagram is a structural diagram of a piston group in one embodiment of a supercharged intercooler connection sealing test device.

[0047] In the figure: 1, test bench; 2, intercooler to be tested; 3, connecting pipe; 4, No. 1 pump gas tank; 5, No. 2 pump gas tank; 6, sealing plug; 7, one-way valve; 8, connecting shaft; 9, hinged rod; 10, first gear; 11, second gear; 12, driving device; 13, bracket; 14, connecting pipe; 15, hysteresis tube; 16, telescopic shaft; 1601, limit ring; 17, first spring; 18, first convex shaft; 19, second convex shaft; 20, side plate; 2001, first vertical groove; 2 002, inclined groove; 2003, second vertical groove; 21, hysteresis cylinder body; 2101, first hysteresis cylinder; 2102, second hysteresis cylinder; 22, indicating part; 23, first hysteresis plug; 2301, first conical surface; 24, second hysteresis plug; 2401, second conical surface; 25, stop block; 26, follower shaft; 2601, scale; 27, annular connector; 28, second spring; 29, connecting plate; 2901, inclined guide surface; 30, abutment shaft; 31, support rod. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0050] See also Figure 1 to Figure 10 In an embodiment of the present invention, a supercharged intercooler connection sealing test device includes: a test bench 1, a No. 1 pump air tank 4 and a No. 2 pump air tank 5, a driving member, a power assembly and a test assembly, so that when the second gear 11 is respectively engaged with the two sets of first gears 10, the driving members located in the No. 1 pump air tank 4 and the No. 2 pump air tank 5 can be respectively actuated, thereby achieving different pumping air speeds. Based on this, on the one hand, the intercooler 2 to be tested can be quickly punched, shortening the time for injecting compressed air into the intercooler 2 to be tested, and on the other hand, when the pressure in the intercooler 2 to be tested is about to reach the rated value, it can be slowly inflated, so that the test personnel can control the driving member to stop the action in time when the pressure in the intercooler 2 to be tested reaches the preset value, so as to avoid the phenomenon of overcharging inside the intercooler 2 to be tested, as follows:

[0051] Two groups of connecting pipes 3 are arranged on the testing platform 1, and both ends of the intercooler 2 to be tested placed on the testing platform 1 are sealed and connected to the two groups of connecting pipes 3 respectively. Specifically, one end of the connecting pipe 3 is open, and the other end is in a blocked state, and the two groups of connecting pipes 3 are connected to both ends of the intercooler 2 to be tested by bolts. At the same time, in order to prevent the airtightness between the two from affecting the sealing of the intercooler 2 to be tested, a sealing ring should be placed between the two before using the bolts, so as to ensure the tightness of the connection between the connecting pipe 3 and the end of the intercooler 2 to be tested, and ensure the airtightness between the two.

[0052] The No. 1 pump gas tank 4 and the No. 2 pump gas tank 5 are connected to one of the connecting pipes 3. The inner diameter of the No. 1 pump gas tank 4 is larger than the inner diameter of the No. 2 pump gas tank 5. Specifically, two groups of one-way valves 7 are provided on the No. 1 pump gas tank 4 and the No. 2 pump gas tank 5. The conducting directions of the two groups of one-way valves 7 are opposite. The one-way valve 7 that conducts from the inside of the No. 1 pump gas tank 4 or the No. 2 pump gas tank 5 to the outside is connected to the connecting pipe 3 through the connecting pipe 14;

[0053] When in use, the two groups of driving parts can reciprocate in the No. 1 pump tank 4 and the No. 2 pump tank 5 respectively. When the driving part moves away from the one-way valve 7, negative pressure is generated in the No. 1 pump tank 4 and the No. 2 pump tank 5, so that the external air can enter the No. 1 pump tank 4 and the No. 2 pump tank 5 through one of the groups of one-way valves 7. When the driving part moves toward the one-way valve 7, positive pressure is generated in the No. 1 pump tank 4 and the No. 2 pump tank 5, and the air in the No. 1 pump tank 4 and the No. 2 pump tank 5 can be compressed, and the compressed air enters the connecting pipe 3 through another one-way valve 7 and the connecting pipe 14, thereby increasing the pressure in the intercooler 2 to be tested.

[0054] Furthermore, since the inner diameter of the No. 1 pump tank 4 is larger than the inner diameter of the No. 2 pump tank 5, when one group of driving parts moves in the No. 1 pump tank 4, the No. 1 pump tank 4 can output more compressed air, and the intercooler 2 to be tested can be quickly punched, shortening the time for injecting compressed air into the intercooler 2 to be tested. When the other group of driving parts moves in the No. 2 pump tank 5, the No. 2 pump tank 5 can output less compressed air, and when the pressure in the intercooler 2 to be tested is about to reach the rated value, it can be slowly inflated, so that the testing personnel can control the driving parts to stop moving in time when the pressure in the intercooler 2 to be tested reaches the preset value, so as to avoid overcharging inside the intercooler 2 to be tested.

[0055] See also Figure 3 , Figure 4 The driving member is provided with two groups and is respectively connected in sealing and sliding manner with the inner wall of the No. 1 pump gas tank 4 and the No. 2 pump gas tank 5;

[0056] The driving member includes two groups of sealing plugs 6 which are sealingly and slidingly connected to the inner walls of the No. 1 pump air tank 4 and the No. 2 pump air tank 5. It should be noted that the radii of the two groups of sealing plugs 6 are different. Specifically, the diameter of one group of sealing plugs 6 is the same as the inner diameter of the No. 1 pump air tank 4, and the diameter of the other group of sealing plugs 6 is the same as the diameter of the No. 2 pump air tank 5. At the same time, sealing strips are provided on the circumferential side walls of the two groups of sealing plugs 6 to ensure the airtightness between the sealing plugs 6 and the inner walls of the No. 1 pump air tank 4 and the No. 2 pump air tank 5, and to prevent the inflation rate from decreasing due to the gap between the sealing plugs 6 and the inner walls of the No. 1 pump air tank 4 and the No. 2 pump air tank 5.

[0057] The two groups of sealing plugs 6 are connected with connecting shafts 8, and the ends of the two groups of connecting shafts 8 away from the sealing plugs 6 are rotatably installed with hinged rods 9, and the hinged rods 9 are rotatably connected with the two groups of first gears 10 arranged on the detection platform 1. Furthermore, the first gear 10 is provided with an eccentric wheel, and the eccentric wheel is rotatably connected with the hinged rod 9, so that the first gear 10 makes a circular motion, and the connection between the hinged rod 9 and the eccentric wheel can make a circular motion, thereby driving the sealing plug 6 to reciprocate in the No. 1 pump gas tank 4 and the No. 2 pump gas tank 5 through the hinged rod 9 and the connecting shaft 8;

[0058] Two groups of the first gears 10 are adapted to the power assembly, and the power assembly is arranged on the detection platform 1. The power assembly has a first state and a second state that are switched by triggering. When the power assembly is in the first state, one group of the driving members can be driven to move in the No. 1 pump tank 4. When the power assembly is in the second state, the other group of the driving members can be driven to move in the No. 2 pump tank 5.

[0059] The power assembly includes a bracket 13 slidably mounted on the detection table 1, and a driving device 12 is fixedly mounted on the bracket 13. The output shaft of the driving device 12 is connected to a second gear 11 adapted to the two groups of the first gears 10, wherein the circumferential radius of the second gear 11 is smaller than the circumferential radius of the first gear 10, so that when the second gear 11 is meshed with the first gear 10, the torque is reduced, thereby reducing the output load of the driving device 12 and improving its durability.

[0060] It should be supplemented that multiple rows of horizontally arranged groove wheels are rotatably installed on one side of the bracket 13, and the groove wheels in two adjacent rows are rollingly matched with the guide members set on the detection platform 1, so that the bracket 13 can move along the length direction of the guide members, and the length direction of the guide members is the same as the vertical distance of the line connecting the two groups of first gears 10, so that when the bracket 13 moves, the second gear 11 can be switched from a state of meshing with one group of first gears 10 to a state of meshing with the other group of first gears 10, so as to achieve the purpose of the second gear 11 being able to drive the two groups of first gears 10 to rotate respectively, thereby being able to change the speed of delivering compressed air toward the intercooler 2 to be tested.

[0061] It should also be noted that, when the power assembly is in the first state, the second gear 11 is meshed with one of the first gears 10, so that the sealing plug 6 arranged in the No. 1 pump tank 4 reciprocates, thereby achieving the effect of quickly inflating the intercooler 2 to be tested, so that the intercooler 2 to be tested can be quickly stamped; when the power assembly is in the second state, the second gear 11 is meshed with another group of first gears 10, so that the sealing plug 6 arranged in the No. 2 pump tank 5 reciprocates, thereby achieving the effect of slowly inflating the intercooler 2 to be tested, thereby avoiding overcharging.

[0062] See also Figure 5 , Figure 6 , the power assembly also includes an energy storage structure connected to the bracket 13 and a side plate 20 connected to the detection platform 1, the end of the energy storage structure is rotatably mounted with a first convex shaft 18 coaxial with the second convex shaft 19, the first convex shaft 18 is rollingly matched with a limiting groove arranged on the side plate 20, in detail, the energy storage structure includes a hysteresis tube 15 fixedly connected to the bracket 13, a telescopic shaft 16 rotatably connected to the first convex shaft 18 is slidably mounted in the hysteresis tube 15, a limiting ring 1601 is arranged on the telescopic shaft 16, and a first spring 17 is sleeved on the telescopic shaft 16, one end of the first spring 17 is connected to the limiting ring 1601, and the other end is connected to the inner wall of the hysteresis tube 15;

[0063] The limiting groove includes a first vertical groove 2001 and a second vertical groove 2003 which are arranged on the side plate 20 and are parallel to each other, wherein the upper ends of the first vertical groove 2001 and the second vertical groove 2003 are connected via an inclined groove 2002, wherein the heights of the lower ends of the first vertical groove 2001 and the second vertical groove 2003 are the same, and the height of the upper end of the first vertical groove 2001 is greater than the height of the upper end of the second vertical groove 2003, so that when the first cam 18 moves into the inclined groove 2002, the first spring 17 can drive the first cam 18 to move from the first vertical groove 2001 toward the second vertical groove 2003 along the length direction of the inclined groove 2002 by releasing its elasticity, thereby realizing the switching of the power assembly from the first state to the second state, and changing the pumping air speed into the intercooler 2 to be tested.

[0064] In the initial state, the first spring 17 is in a compressed state. At this time, the first cam 18 is at one end of the first vertical groove 2001 away from the inclined groove 2002, so that in this state, the first cam 18 is locked laterally, and the second gear 11 is locked laterally. In this state, it can ensure that the second gear 11 is stably engaged with one group of first gears 10, and the sealing plug 6 sealed and slidably connected to the No. 1 pump air tank 4 makes reciprocating motion to provide a faster inflation speed. When the pressure in the intercooler 2 to be detected reaches the preset value, the detection component can drive the second cam 19 to move upward, and drive the first cam 18 to move toward the inclined groove 2002 along the length direction of the first vertical groove 2001, so that the first spring 17 is further compressed, and when the first After the cam 18 moves to the end of the first vertical groove 2001, the first spring 17 can release the elastic potential energy to make the first cam 18 move along the inclined groove 2002. At this time, the bracket 13 and the second gear 11 move laterally until the first cam 18 moves to the end of the inclined groove 2002. The first spring 17 further releases the elastic potential energy to make the first cam 18 enter the second vertical groove 2003. In this state, the second gear 11 is laterally locked again, so that the second gear 11 can stably engage with the other first gear 10, so that the sealing plug 6 that is sealingly and slidingly connected to the No. 2 pump air tank 5 makes reciprocating motion to provide a slower inflation speed, so that when the pressure in the intercooler 2 to be tested reaches the rated value, the sealing plug 6 can be controlled to stop moving to prevent overcharging.

[0065] Through the above arrangement, when the second gear 11 is respectively meshed with the two groups of first gears 10, the driving members located in the No. 1 pump air tank 4 and the No. 2 pump air tank 5 can be activated respectively, so as to achieve different pumping speeds. Based on this, on the one hand, the intercooler 2 to be tested can be quickly punched, shortening the time for injecting compressed air into the intercooler 2 to be tested; on the other hand, when the pressure in the intercooler 2 to be tested is about to reach the rated value, it can be slowly inflated, so that the testing personnel can control the driving member to stop the action in time when the pressure in the intercooler 2 to be tested reaches the preset value, so as to avoid overcharging inside the intercooler 2 to be tested.

[0066] See also Figure 7 , Fig. 9 , Fig.10 The detection component is connected to another set of the connecting pipes 3 and is adapted to the second cam 19 provided on the power component. The detection component can trigger the second cam 19 to operate after the pressure in the intercooler 2 to be detected reaches a preset value, so that the power component switches from the first state to the second state;

[0067] The detection component includes: a hysteresis cylinder 21 and a trigger component.

[0068] The hysteresis cylinder body 21 is fixedly mounted on the detection platform 1, and a first hysteresis cylinder 2101 and a second hysteresis cylinder 2102 are formed in the hysteresis cylinder body 21, the inner diameter of the first hysteresis cylinder 2101 is larger than the inner diameter of the second hysteresis cylinder 2102, and a plurality of stop blocks 25 are equidistantly arranged on the inner wall of the first hysteresis cylinder 2101 in a circumferential manner;

[0069] The piston group arranged in the hysteresis cylinder body 21 can be adapted to the first hysteresis cylinder 2101 and the second hysteresis cylinder 2102 respectively;

[0070] The piston group includes a first hysteresis plug 23 adapted to the second hysteresis cylinder 2102 and a second hysteresis plug 24 adapted to the first hysteresis cylinder 2101. Specifically, the second hysteresis plug 24 is sealingly and slidably connected to the inner wall of the first hysteresis cylinder 2101, and the first hysteresis plug 23 is sealingly and slidably connected to the inner wall of the second hysteresis cylinder 2102. A first conical surface 2301 is formed on the outer side of the first hysteresis plug 23, and the first conical surface 2301 is adapted to a second conical surface 2401 arranged on the inner side of the second hysteresis plug 24.

[0071] The piston group further includes a follower shaft 26 coaxial with the first hysteresis plug 23, and the follower shaft 26 is connected to an annular connector 27 provided on the hysteresis cylinder 21 through a second spring 28, wherein a scale 2601 is provided on the follower shaft 26, and the scale 2601 is adapted to an indicator 22 provided on the top of the hysteresis cylinder 21, and by observing the position of the indicator 22 corresponding to the scale 2601, the pressure value in the intercooler 2 to be detected can be grasped in real time;

[0072] It should be supplemented that a guide block is also provided on the follower shaft 26, and the guide block slidably cooperates with the guide groove provided on the hysteresis cylinder 21, so as to achieve axial locking of the follower shaft 26, prevent the follower shaft 26 from rotating, and make the follower shaft 26 only able to perform lifting and lowering actions.

[0073] In the initial state, the second spring 28 is in a stretched state, at which time the second displacement plug 24 and the stop block 25 are in abutment state, and at the same time, the first conical surface 2301 on the first displacement plug 23 and the second conical surface 2401 on the second displacement plug 24 are in abutment, so that the first displacement plug 23 and the second displacement plug 24 form a complete piston structure with a larger diameter, and as the pressure in the intercooler 2 to be detected increases, the pressure in the first displacement cylinder 2101 will also increase, and at this time the first displacement plug 23 and the second displacement plug 24 will synchronously move away from the stop block 25, and at this time, when a unit pressure change occurs in the intercooler 2 to be detected, the displacement of the follower shaft 26 is smaller, reducing the overall stroke of the follower shaft 26, and the first displacement plug 23 and the second displacement plug 24 synchronously move to a predetermined position. After being placed, the second retardation plug 24 abuts against the end of the first retardation cylinder 2101. At this time, the second retardation plug 24 is blocked and cannot continue to move, so that the pressure can continue to act on the first retardation plug 23 and make the first retardation plug 23 move away from the first retardation plug 23 along the length direction of the second retardation cylinder 2102. Obviously, the area of ​​the first retardation plug 23 is smaller than the area of ​​the piston structure formed by the first retardation plug 23 and the second retardation plug 24. When a unit pressure change occurs in the intercooler 2 to be tested, the follower shaft 26 can have a larger displacement and has a higher sensitivity to pressure changes, so that when the pressure in the intercooler 2 to be tested reaches the rated value, the pumping action is controlled to stop in time, thereby improving the accuracy of delivering compressed air to the intercooler 2 to be tested, and further preventing the occurrence of overcharging.

[0074] Furthermore, the stiffness of the second spring 28 is much greater than the stiffness of the first spring 17 .

[0075] Through the above arrangement, on the one hand, during the initial pumping, when a unit pressure change occurs in the intercooler 2 to be tested, the displacement of the follower shaft 26 can be smaller, so as to reduce the overall stroke of the follower shaft 26 and make the device structure more compact. On the other hand, when the internal pressure of the intercooler 2 to be tested is about to reach the rated value, when a unit pressure change occurs in the intercooler 2 to be tested, the follower shaft 26 can have a larger displacement and a higher sensitivity to pressure changes, so that when the pressure in the intercooler 2 to be tested reaches the rated value, the pumping action can be controlled to stop in time, thereby improving the accuracy of delivering compressed air to the intercooler 2 to be tested and further preventing the occurrence of overcharging.

[0076] See also Figure 5~Figure 8 The trigger assembly is connected to the follower shaft 26, and the trigger assembly can drive the second convex shaft 19 to move. The trigger assembly includes a connecting plate 29 detachably connected to the follower shaft 26, and an inclined guide surface 2901 adapted to the second convex shaft 19 is formed on the connecting plate 29, wherein the inclined guide surface 2901 is parallel to the inclined groove 2002;

[0077] The trigger assembly further includes a support rod 31 rotatably mounted on the side plate 20 , one end of the support rod 31 being adapted to the second convex shaft 19 , and the other end being adapted to the abutment shaft 30 rotatably mounted on the link plate 29 .

[0078] During use, as the internal pressure of the intercooler 2 to be tested increases, the follower shaft 26 will move upward, and after the follower shaft 26 moves to the predetermined position, the second cam 19 will abut against the inclined guide surface 2901, and at this time the first cam 18 will move toward the inclined groove 2002 along the length direction of the first vertical groove 2001, until the inclined guide surface 2901 is coplanar with the lower side wall of the inclined groove 2002, the first cam 18 just moves to the upper end of the first vertical groove 2001, and at this time the second cam 19 will move along the inclined guide surface 2901, so that the first cam 18 can enter the inclined groove 2002, and then the first cam 18 moves along the length direction of the inclined groove 2002 until it moves into the second vertical groove 2003, so as to realize the position switching and position locking of the second gear 11.

[0079] Furthermore, when the detection is completed, the intercooler 2 to be detected is disconnected from the connecting pipe 3. At this time, under the action of the second spring 28, the follower shaft 26 can drive the first retardation plug 23 and the second retardation plug 24 to reset. During this process, the connecting plate 29 will follow the follower shaft 26 to move downward, so that the abutment shaft 30 can move downward to abut with the support rod 31. At this time, the support rod 31 is deflected, so that the other end can act on the second cam 19, and the first cam 18 is ejected from the second vertical groove 2003. Subsequently, the second gear 11 can be reset by pushing the bracket 13, without the need to manually eject the first cam 18 and then push the bracket 13 to move, thereby reducing the portability of resetting the second gear 11 and simplifying the operation process.

[0080] Through the above arrangement, when the pressure in the intercooler 2 to be tested reaches a preset value, the connecting plate 29 can cooperate with the second cam 19 to make the first cam 18 perform a position switching action to reduce the speed of conveying compressed gas toward the intercooler 2 to be tested, and after the detection is completed, the abutment shaft 30 can cooperate with the support rod 31 to push the first cam 18 out of the second vertical groove 2003, so that when resetting the second gear 11, it is only necessary to push the bracket 13, thereby reducing the difficulty of operation.

[0081] A method for detecting the sealing performance of a connection of a supercharged intercooler using the sealing test device comprises the following steps:

[0082] Step 1: placing the intercooler 2 to be tested on the testing platform 1, and connecting the two ends of the intercooler 2 to be tested to the two sets of connecting pipes 3 respectively;

[0083] Step 2: Control the power assembly to move, and the power assembly first causes a group of driving parts in the No. 1 pump gas tank 4 to quickly fill the intercooler 2 to be tested with gas;

[0084] Step 3: As the amount of gas charged into the intercooler 2 to be tested increases, the detection component will be activated, and when the detection component abuts against the second convex shaft 19, the power component switches from the first state to the second state, at which time the power component drives another set of driving components to act in the second pump gas tank 5, and the gas is slowly charged into the intercooler 2 to be tested;

[0085] Step 4: When the air pressure in the intercooler 2 to be tested reaches a preset value, the power assembly is controlled to stop working;

[0086] Step 5: Observe the change of the pressure inside the intercooler 2 to be tested.

[0087] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0088] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A supercharged intercooler connection sealing test device, characterized in that: include: A test bench (1), wherein two groups of connecting pipes (3) are arranged on the test bench (1), and the two ends of the intercooler (2) to be tested placed on the test bench (1) are respectively sealed and connected to the two groups of connecting pipes (3); a first pump gas tank (4) and a second pump gas tank (5) are connected to one of the groups of connecting pipes (3), and the inner diameter of the first pump gas tank (4) is larger than the inner diameter of the second pump gas tank (5); two groups of driving members are arranged and are respectively sealed and slidably connected to the inner walls of the first pump gas tank (4) and the second pump gas tank (5); a power assembly is arranged on the test bench (1), and the power assembly has a first state and a second state that are switched by being triggered, and when the power assembly is in the first state, it can drive one group of the driving members in the The first pump gas tank (4) is actuated, and when the power assembly is in the second state, it can drive another group of the driving members to operate in the second pump gas tank (5); a detection assembly is connected to another group of the connecting pipes (3) and is adapted to a second cam shaft (19) provided on the power assembly, and the detection assembly can trigger the second cam shaft (19) to operate after the pressure in the intercooler (2) to be detected reaches a preset value, thereby switching the power assembly from the first state to the second state; the driving member includes two groups of sealing plugs (6) that are sealingly and slidably connected to the inner walls of the first pump gas tank (4) and the second pump gas tank (5), and the two groups of the sealing plugs (6) are both connected to a connecting shaft (8), and the two groups of the connecting shafts (8) are away from the sealing plugs. One end of the detection platform (6) is rotatably mounted with a hinge rod (9), and the hinge rod (9) is rotatably connected to two groups of first gears (10) arranged on the detection platform (1); the two groups of first gears (10) are adapted to the power assembly, and the power assembly includes a bracket (13) slidably mounted on the detection platform (1), a driving device (12) is fixedly mounted on the bracket (13), and a second gear (11) adapted to the two groups of first gears (10) is connected to the output shaft of the driving device (12); the power assembly also includes an energy storage structure connected to the bracket (13) and a side plate (20) connected to the detection platform (1), and the end of the energy storage structure is rotatably mounted with a second gear coaxial with the second convex shaft (19) A convex shaft (18), wherein the first convex shaft (18) is rollingly matched with a limit groove provided on the side plate (20); the energy storage structure comprises a hysteresis tube (15) fixedly connected to the bracket (13), wherein a telescopic shaft (16) rotatably connected to the first convex shaft (18) is slidably installed in the hysteresis tube (15), wherein a limit ring (1601) is provided on the telescopic shaft (16), and a first spring (17) is sleeved on the telescopic shaft (16); the limit groove comprises a first vertical groove (2001) and a second vertical groove (2003) which are provided on the side plate (20) and are parallel to each other, wherein the upper ends of the first vertical groove (2001) and the second vertical groove (2003) are connected via an inclined groove (2002).

2. A supercharged intercooler connection sealing test device according to claim 1, characterized in that: The detection component comprises: a hysteresis cylinder body (21), fixedly mounted on the detection platform (1), wherein a first hysteresis cylinder (2101) and a second hysteresis cylinder (2102) are formed in the hysteresis cylinder body (21), wherein the inner diameter of the first hysteresis cylinder (2101) is larger than the inner diameter of the second hysteresis cylinder (2102); a piston group arranged in the hysteresis cylinder body (21) and capable of respectively matching with the first hysteresis cylinder (2101) and the second hysteresis cylinder (2102); and a trigger component connected to the piston group, wherein the trigger component is capable of driving the second cam shaft (19) to move.

3. A supercharged intercooler connection sealing test device according to claim 2, characterized in that: The piston group comprises a first hysteresis plug (23) adapted to the second hysteresis cylinder (2102) and a second hysteresis plug (24) adapted to the first hysteresis cylinder (2101); a first conical surface (2301) is formed on the outer side of the first hysteresis plug (23); the first conical surface (2301) is adapted to a second conical surface (2401) arranged on the inner side of the second hysteresis plug (24); the piston group also comprises a follower shaft (26) coaxial with the first hysteresis plug (23); the follower shaft (26) is connected to an annular connecting piece (27) arranged on the hysteresis cylinder body (21) via a second spring (28).

4. A supercharged intercooler connection sealing test device according to claim 3, characterized in that: The trigger assembly comprises a connecting plate (29) detachably connected to the follower shaft (26), and an inclined guide surface (2901) adapted to the second convex shaft (19) is formed on the connecting plate (29); the trigger assembly also comprises a support rod (31) rotatably mounted on the side plate (20), one end of the support rod (31) is adapted to the second convex shaft (19), and the other end is adapted to the abutment shaft (30) rotatably mounted on the connecting plate (29).

5. A method for testing the sealing performance of a connection of a supercharged intercooler using the sealing test device according to any one of claims 1 to 4, characterized in that: The following steps are included: Step 1: placing the intercooler (2) to be tested on the test bench (1), and connecting the two ends of the intercooler (2) to be tested to the two groups of connecting pipes (3) respectively; Step 2: controlling the power assembly to operate, the power assembly first causes one group of driving parts to operate in the No. 1 pump gas tank (4), so as to quickly fill the intercooler (2) to be tested with gas; Step 3: as the amount of gas filled into the intercooler (2) to be tested increases, the test assembly will operate, and when the test assembly abuts against the second cam (19), the power assembly switches from the first state to the second state, at which time the power assembly drives the other group of driving parts to operate in the No. 2 pump gas tank (5), so as to slowly fill the intercooler (2) to be tested with gas; Step 4: when the gas pressure in the intercooler (2) to be tested reaches a preset value, controlling the power assembly to stop working; Step 5: observing the change in the pressure in the intercooler (2) to be tested.

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