Multi-angle performance testing device and method for bypass valve in turbocharger

Abstract

The invention discloses a multi-angle performance testing device and method for a bypass valve in a turbocharger. The testing device comprises a bearing table, and the bearing table is provided with a clamp assembly, an air compression assembly, a plugging assembly and opening degree control equipment; the clamp assembly is used for locking a turbocharger, the air compression assembly is used for supplying air into the turbocharger at constant pressure, and the plugging assembly is used for plugging an impeller groove in a turbine in the turbocharger. And the opening control device controls the opening of a bypass valve in the turbocharger through an electronic actuator. The turbocharger testing device is used for testing the turbocharger, can perform automatic clamping, automatic ventilation and automatic plugging work on the turbocharger, and is simple to operate and high in testing efficiency; the impeller groove is plugged through the plug, water can be automatically sprayed to the plug, it is guaranteed that the plug is in a wet state, and the plugging success rate is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of turbochargers, and in particular to a multi-angle performance testing device and method for a bypass valve in a turbocharger. Background Art

[0002] A turbocharger is a device used to improve the efficiency and power of an internal combustion engine. It usually includes a compressor and a turbine. Its working principle is that the impeller in the turbine drives the impeller in the connected compressor to rotate synchronously. The compressor impeller draws in and compresses air, increasing the pressure and density of the air entering the engine cylinder, thereby increasing the power and torque of the engine.

[0003] Among them, a bypass hole is also provided in the main flow channel of the compressor. Its function is that when the engine is running at high speed and high load conditions, the exhaust gas energy is relatively large, which will cause the turbine speed to be too high, resulting in the boost pressure exceeding the set value. At this time, the bypass valve opens, so that part of the waste does not drive the impeller in the turbine to rotate and is directly discharged.

[0004] After the turbocharger is produced, the bypass hole inside it needs to be flow tested to test whether the bypass valve can form different openings under different voltage signals under constant pressure conditions, and to test whether the flow in the bypass hole is stable and the speed changes evenly when the bypass valve is at different openings. However, there is currently no equipment on the market to perform this process testing. Currently, the turbocharger must be manually clamped, manually sealed, and then manually tested. The operation is relatively cumbersome, so research and development is needed to reduce testing time. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a multi-angle performance testing device and method for a bypass valve in a turbocharger, so as to solve the problems mentioned in the above background technology.

[0006] The present invention provides the following technical solution: a multi-angle performance testing device for a bypass valve in a turbocharger, comprising a carrier platform on which a fixture assembly, a compressed air assembly, a blocking assembly, and an opening control device are arranged; The clamp assembly is used to lock the turbocharger, specifically by locking the locking platform at the end of the exhaust arm in the turbine of the turbocharger. The clamp assembly includes a column fixed to the supporting platform, a receiving groove is provided in the upper side of the column, and a support plate for supporting the locking platform is provided on the bottom surface of the receiving groove. The column is also provided with a pressing mechanism for pressing down the locking platform. The compressed air assembly includes an air inlet hole provided in the bottom surface of the accommodating tank, and the middle hole in the support plate is connected to the through hole in the support plate and communicated with the main flow channel in the locking platform. The lower side of the column is connected to the air supply pipe, a flow sensor is provided in the air supply pipe, and the air supply pipe is connected to the constant pressure air supply equipment; The blocking assembly includes a cylinder mounted on the carrier platform, and the end of the piston rod in the cylinder is equipped with a plug for blocking the impeller groove in the turbine; The opening control device is electrically connected to the electronic actuator in the turbocharger, and controls the opening of the bypass valve through the electronic actuator by adjusting the output voltage.

[0007] Preferably, a groove adapted to the shape of the locking platform is provided in the upper side of the support plate, and the side surfaces of the support plate are attached to the side edges of the accommodating groove; A sealing ring is respectively provided between the bottom surface of the groove and the lower side surface of the supporting plate, and the sealing ring is sleeved outside the middle hole.

[0008] Preferably, the clamping mechanism includes slide grooves respectively arranged in the front and rear side surfaces of the accommodating groove, and a pressure plate is slidably connected to each of the slide grooves, and a through groove is provided in the pressure plate, which penetrates upward and extends front and back, and a tooth surface is processed on the side of the through groove. A ring platform is also provided on the outer curved surface of the column, and two drive shafts respectively extending into the two slide grooves are rotatably connected in the ring platform, and a No. 1 gear meshing with the tooth surface is provided on the drive shaft, and a motor for driving the drive shaft to rotate is also provided on the column.

[0009] Preferably, a gear ring is further provided on the outer curved surface of the column, each of the drive shafts is provided with a second gear meshing with the gear ring, and the motor is only provided with one.

[0010] Preferably, an adjustment slot extending in the front-to-back direction is provided in the upper side surface of the supporting platform, an adjustment plate is slidably connected in the front-to-back direction in the adjustment slot, a vertical plate is fixed on the adjustment plate, a lifting block is slidably connected in the vertical plate, the cylinder is fixed on the lifting block, and the piston rod in the cylinder passes through the lifting block to the left; A No. 1 adjusting shaft that is threadedly connected to the adjusting plate and extends in the front-to-back direction is rotatably connected in the adjusting slot, and a No. 2 adjusting shaft that is vertically arranged and threadedly connected to the lifting block is rotatably connected in the vertical plate.

[0011] Preferably, the piston rod is further sleeved with a ring plate, the outer curved surface of the ring plate is fixedly provided with a sleeve extending to the left, a pressure sensor is provided on the side surface of the ring plate, and a diaphragm is provided in the sleeve to abut against the pressure sensor; A rubber sleeve is fixedly provided on the left end of the sleeve, and the rubber sleeve extends to the left side of the plug.

[0012] Preferably, it also includes a spray mechanism, which includes a water tank fixedly mounted on the vertical plate, a nozzle inclined to the lower right is installed on the lower side of the water tank, and the nozzle is connected to the water tank, and a piston cylinder is installed at the lower end of the water tank, a piston is connected to the piston cylinder through a spring, and a piston rod is installed in the piston cylinder which passes through the piston cylinder to the left, and a trigger rod is installed at the end of the piston rod which extends downward, and an air inlet and an air outlet are provided on the right side of the piston cylinder, the air outlet is connected to the water tank and is provided with a No. 1 one-way valve which flows outward relative to the piston cylinder, and a No. 2 one-way valve which flows inward relative to the piston cylinder is provided in the air inlet.

[0013] Preferably, the opening control device includes a box body, on which a visual screen for displaying voltage is provided, and two buttons for controlling the increase or decrease of voltage are provided on the box body. Two numerical values can be displayed on the visual screen, one is the input voltage input to the electronic actuator to control the opening of the bypass valve, and the other is the output voltage of the electronic actuator fed back to the visual screen to display the actual opening of the bypass valve.

[0014] A method for testing a multi-angle performance test device for a bypass valve in a turbocharger comprises the following steps: S1. Clamping the turbocharger: The worker inserts the locking platform downward into the support plate, then powers the motor. Under the action of the ring gear, the motor drives the two drive shafts to rotate synchronously, so that the two pressure plates approach each other. At this time, the pressure plates can press against the upper edge of the locking platform, thereby cooperating with the support plate to lock the locking platform, thereby locking the turbocharger; S2. Blocking: The staff controls the cylinder to insert the plug into the turbine and block the impeller groove; S3. Preliminary inspection: The staff connects the electronic actuator to the box in the opening control device via a wire. The opening control device automatically performs a preliminary inspection on the electronic actuator. That is, the opening control device uses the electronic actuator to fully open the bypass valve. At this time, the output voltage of the electronic actuator is displayed on the visual screen. The staff can determine whether the input voltage when the bypass valve is in the fully open state is within a preset range based on the output voltage. Then, the staff presses the two buttons simultaneously, and the opening control device can control the bypass valve to be in a fully closed state. At this time, the staff can judge whether the output voltage in this state is within the preset range based on the output voltage displayed on the visual screen; S4. Conducting a test: The staff energizes the constant-pressure air supply device and supplies air into the air supply pipe. The air in the air supply pipe is discharged through the bypass hole in the turbine pressed by the support plate, and the flow sensor can detect the air flow rate. The staff can control the bypass valve opening by the button and judge whether the flow rate of the bypass hole in the turbine at this bypass valve opening meets the standard by observing the output value of the flow sensor.

[0015] The present invention provides a multi-angle performance testing device for a bypass valve in a turbocharger, which has the following beneficial effects: The present invention is used for testing a turbocharger, and can automatically clamp, ventilate and seal the turbocharger, with simple operation and high testing efficiency. The present invention uses a plug to seal the impeller groove, and the present invention can automatically spray water on the plug to ensure that it is in a wet state, thereby increasing the success rate of sealing. In addition, the present invention is also provided with a pressure sensor for sensing whether the sealing has failed; The present invention is connected to an electronic actuator through an opening control device, thereby controlling the opening of a bypass valve in a turbocharger. Specifically, the control voltage is adjusted by pressing a button in the opening control device, thereby adjusting the opening. The operation is simple, and the staff can also observe the actual opening of the bypass valve on the opening control device, which is convenient for recalibrating the electronic actuator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the appearance of the present invention; Figure 2 yes Figure 1 An enlarged schematic diagram of the center column; Figure 3 It is a structural schematic diagram of the present invention; Figure 4 yes Figure 2 A magnified schematic diagram of point A in the middle; Figure 5 yes Figure 2 A magnified schematic diagram of point B in the middle; Figure 6 yes Figure 2 The enlarged schematic diagram of point C in the middle; Figure 7 It is a schematic diagram of the appearance of the present invention from another perspective.

[0017] In the picture: 11. Carrying platform; 21. Column; 22. Receiving groove; 23. Support plate; 24. Air inlet; 25. Air supply pipe; 26. Flow sensor; 27. Cylinder; 28. Plug; 29. Press plate; 30. Ring platform; 31. Drive shaft; 32. Motor; 33. Ring gear; 34. Adjustment groove; 35. Adjustment plate; 36. Vertical plate; 37. Lifting block; 38. Ring plate; 39. Sleeve; 40. Rubber sleeve; 41. Water tank; 42. Nozzle; 43. Piston cylinder; 44. Trigger rod; 51. Box; 52. Visual screen; 53. Button. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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 should not be understood as limiting the present invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0021] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0022] Reference Figure 1-Figure 7According to an embodiment of the present invention, a multi-angle performance testing device for a bypass valve in a turbocharger includes a carrier platform 11, on which a clamp assembly 91, a compressed air assembly 92, a sealing assembly 93 and an opening control device 94 are provided.

[0023] First, the turbocharger of the prior art is introduced: the turbocharger includes a compressor and a turbine, the turbine is provided with an impeller, and the turbine is provided with an impeller groove for accommodating the impeller, and the side of the turbine is also provided with an exhaust arm, and the end face of the exhaust arm is provided with a locking platform, and the end face of the locking platform is provided with a main flow channel flowing in the impeller groove along the direction of the exhaust arm and facing the impeller, a bypass hole is provided in the side of the main flow channel, the bypass hole is directly connected to the turbine, and a bypass valve acting on the bypass hole is provided in the turbine, and an electronic actuator is provided on the compressor, and the electronic actuator controls the opening of the bypass valve through a connecting rod.

[0024] The multi-angle performance testing device for a bypass valve in a turbocharger is used to test whether the size of the airflow that can flow through the bypass hole meets the standard when the bypass valve is at different opening degrees and constant air pressure.

[0025] In this embodiment, the clamp assembly 91 is used for the locking platform at the end of the exhaust arm in the turbine to lock the turbocharger. The clamp assembly 91 includes a column 21 fixed on the supporting platform 11. The upper side surface of the column 21 is provided with a receiving groove 22. The bottom surface of the receiving groove 22 is provided with a support plate 23 for supporting the locking platform. The column 21 is also provided with a clamping mechanism for pressing down the locking platform.

[0026] In this embodiment, the clamping mechanism includes sliding grooves respectively provided in the front and rear side surfaces of the accommodating groove 22, each of which is slidably connected to a pressure plate 29, and a through groove is provided in the pressure plate 29, which passes through upward and extends front and back, and a tooth surface is processed on the side of the through groove. The outer curved surface of the column 21 is also provided with a ring platform 30, and two drive shafts 31 are rotatably connected in the ring platform 30 and extend into the two sliding grooves respectively, and a No. 1 gear meshing with the tooth surface is provided on the drive shaft 31. The column 21 is also provided with a motor 32 for driving the drive shaft 31 to rotate, and a gear ring 33 is also provided on the outer curved surface of the column 21, and each drive shaft 31 is provided with a No. 2 gear meshing with the gear ring 33. There is one motor 32, and one motor 32 can drive the two drive shafts 31 to rotate synchronously through the gear ring 33, so that the pressure plates 29 move toward each other.

[0027] Specific turbocharger locking process: First, the staff inserts the locking platform downward into the support plate 23, and then controls the motor 32 to be energized. Under the action of the ring gear 33, the motor 32 can synchronously drive the two drive shafts 31 to rotate synchronously, so that the two pressure plates 29 are close to each other. At this time, the pressure plate 29 can be pressed on the upper edge of the locking platform, thereby cooperating with the support plate 23 to lock the locking platform, so that the turbocharger is locked.

[0028] The compressed air component 92 includes an air inlet hole 24 provided in the bottom surface of the accommodating groove 22, and the middle hole in the support plate 23 is connected to the through hole in the support plate 23 and is connected to the main flow channel in the locking platform. The lower side of the column 21 is connected to the air supply pipe 25, and a flow sensor 26 is provided in the air supply pipe 25, and the air supply pipe 25 is connected to a constant pressure air supply device. The constant pressure air supply device can supply air at a constant pressure to the air supply pipe 25 under a controlled state. This is a conventional equipment in the prior art and will not be repeated here.

[0029] The blocking assembly 93 includes a cylinder 27 mounted on the supporting platform 11 , and a plug 28 for blocking the impeller groove in the turbine is installed at the end of the piston rod in the cylinder 27 .

[0030] The opening control device 94 is electrically connected to the electronic actuator in the turbocharger, and controls the bypass valve opening through the electronic actuator by adjusting the output voltage. The opening control device 94 includes a box 51, and a visual screen 52 for displaying voltage is provided on the box 51. Two buttons 53 for controlling the increase or decrease of voltage are also provided on the box 51. The visual screen 52 can display two numerical values, one is the input voltage input to the electronic actuator to control the bypass valve opening, and the other is the output voltage from the electronic actuator fed back to the visual screen 52 to display the actual opening of the bypass valve (actually the electrical signal converted into voltage data).

[0031] Briefly describe the testing process: After the turbocharger is locked by the clamp assembly 91, the staff connects the plug on the box 51 to the electronic actuator of the turbocharger. At this time, the visual screen 52 can display the voltage feedback of the bypass valve at the current angle. Then the staff uses the plug 28 to block the impeller groove. At this time, the airflow in the main channel can only be discharged through the bypass hole. That is, the flow sensor 26 can now sense the air flow in the bypass hole. The staff can control the voltage by pressing the button 53 to adjust the opening of the bypass valve and test the flow rate of the bypass valve at different openings (under the condition of isobaric air flow supply).

[0032] In the second embodiment of the multi-angle performance testing device for the bypass valve in a turbocharger, a groove adapted to the shape of the locking platform is provided on the upper side surface of the support plate 23, and the side surfaces of the support plate 23 are affixed to the side edges of the accommodating groove 22. The staff can adapt to turbochargers of different specifications by replacing the support plate 23, and since the thicknesses of the support plates 23 are different, the pressure plate 29 can play a locking function for different turbochargers.

[0033] In order to prevent air leakage from occurring at the support plate 23 , a sealing ring is provided between the bottom surface of the groove and the lower side surface of the support plate 23 , and the sealing ring is sleeved outside the middle hole.

[0034] In order to realize the automatic sealing of the plug 28, an adjustment groove 34 extending in the front-to-back direction is provided in the upper side surface of the carrier 11. An adjustment plate 35 is slidably connected to the adjustment groove 34. A vertical plate 36 is fixed on the adjustment plate 35. A lifting block 37 is slidably connected to the vertical plate 36. The cylinder 27 is fixed on the lifting block 37, and the piston rod in the cylinder 27 passes through the lifting block 37 to the left. A first adjusting shaft threadedly connected to the adjusting plate 35 and extending in the front-to-back direction is rotatably connected in the adjusting slot 34 , and a second adjusting shaft vertically arranged and threadedly connected to the lifting block 37 is rotatably connected in the vertical plate 36 .

[0035] By rotating the No. 1 and No. 2 adjustment shafts, the operator can control the front-to-back and up-and-down positions of the plug 28 to adapt to the position of the impeller slot in different turbochargers (specifically, the position of the impeller slot in the turbine of the turbocharger after it is clamped by the clamp assembly 91). After the adjustment is completed, the operator only needs to control the ventilation of the cylinder 27 to cause the plug 28 to move to the left and automatically block the impeller slot. In addition to the manual control method, the machine 11 can also be provided with a control motor for controlling the first and second adjustment axes to achieve automatic adjustment.

[0036] In the third embodiment of the multi-angle performance testing device for a turbocharger internal bypass valve, in addition to the above features, the piston rod is further sleeved with a ring plate 38 , a sleeve 39 extending leftward is fixedly mounted on the outer curved surface of the ring plate 38 , a pressure sensor 81 is mounted on the side surface of the ring plate 38 , and a diaphragm 82 is mounted within the sleeve 39 to abut against the pressure sensor 81 ; A rubber sleeve 40 is fixed to the left end of the sleeve 39 , and the rubber sleeve 40 extends to the left side of the plug 28 .

[0037] That is, the plug 28 forms a primary seal. If the position of the plug 28 deviates and causes leakage, the leaked gas will squeeze the diaphragm to change the pressure sensed by the pressure sensor. At this time, the staff can determine whether a leakage occurs based on the value sensed by the pressure sensor.

[0038] The piston rod can be provided with a straight rod section and an articulated section (not shown in the figure), and the articulated section is hinged to the end of the straight rod section so that the plug 28 and the rubber sleeve 40 can swing back and forth. If the bypass valve in the turbine is too protruding, the plug 28 and the rubber sleeve 40 can still be wrapped around the bypass valve to perform the sealing work because the articulated section can swing back and forth, and the articulated section is limited to limit the swing angle.

[0039] In the fourth embodiment of the multi-angle performance testing device for the bypass valve in the turbocharger, in order to improve the success rate of the plug 28 in sealing, it also includes a spray mechanism, which includes a water tank 41 fixed on the vertical plate 36, and the lower side of the water tank 41 is provided with a nozzle 42 inclined to the lower right, and the nozzle 42 is connected to the water tank 41, and the lower end of the water tank 41 is provided with a piston cylinder 43, a piston is connected to the piston cylinder 43 by a spring, and a piston rod is provided in the piston that passes through the piston cylinder 43 to the left, and a trigger rod 44 extending downward is provided at the end of the piston rod, and an air inlet and an air outlet are provided in the right side of the piston cylinder 43, the air outlet is connected to the water tank 41 and is provided with a No. 1 one-way valve that flows outward relative to the piston cylinder 43, and the air inlet is provided with a No. 2 one-way valve that flows inward relative to the piston cylinder 43.

[0040] That is, when the piston rod retracts to drive the ring plate 38 and the plug 28 to move rightward, the ring plate 38 will drive the trigger rod 44 to move rightward, and the trigger rod 44 moves rightward to drive the piston to the right. At this time, the air in the piston cylinder 43 will be pressed into the water tank 41, and the water in the water tank 41 will be sprayed to the lower right through the nozzle 42 onto the plug 28 and the rubber sleeve 40, so that the plug 28 and the rubber sleeve remain moist. The plug 28 and the rubber sleeve 40 are both made of rubber and will become softer when wet, so as to fill the tiny unevenness of the sealing surface and improve the sealing effect.

[0041] When the piston rod moves to the left, the piston will return to the left under the action of the spring, so that air can be filled into the piston cylinder 43 through the air inlet.

[0042] The testing method of the multi-angle performance testing device for a turbocharger bypass valve is specifically as follows: S1. Clamping the turbocharger: The worker inserts the locking platform downward into the support plate 23 and then powers the motor 32. Under the action of the ring gear 33, the motor 32 can synchronously drive the two drive shafts 31 to rotate, so that the two pressure plates 29 approach each other. At this time, the pressure plates 29 can press on the upper edge of the locking platform, thereby cooperating with the support plate 23 to lock the locking platform, thereby locking the turbocharger; S2. Blocking: The staff controls the cylinder 27 to insert the plug 28 into the turbine and block the impeller groove; S3. Preliminary inspection: The staff connects the electronic actuator to the box 51 in the opening control assembly 94 via a wire. The opening control assembly 94 drives the electronic actuator to automatically perform a preliminary inspection. That is, the opening control assembly 94 uses the electronic actuator to fully open the bypass valve. At this time, the output voltage of the electronic actuator is displayed on the visual screen 52. The staff can determine whether the input voltage when the bypass valve is in the fully open state is within a preset range based on the output voltage. Then, the staff presses the two buttons 53 at the same time. At this time, the opening control component 94 can control the bypass valve to be in a fully closed state. At this time, the staff can judge whether the output voltage in this state is within the preset range based on the output voltage displayed on the visual screen 52. S4. Test: The staff energizes the constant pressure air supply device and supplies air into the air supply pipe 25. The air in the air supply pipe 25 is discharged through the bypass hole in the turbine pressed by the support plate 23, and the flow sensor 26 can detect the air flow. The staff can control the bypass valve opening by means of the button 53 and judge whether the flow rate of the bypass hole in the turbine at this bypass valve opening meets the standard by observing the output value of the flow sensor 26 .

[0043] It should be additionally noted that, during the above-mentioned S3 process, if the output voltage is not within the preset range, the staff needs to rotate the retractable connecting rod connecting the electronic actuator and the bypass valve in the turbocharger to adjust the length of the connecting rod and recalibrate the electronic actuator.

[0044] The above description is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by any technician in this field within the scope of the present invention are included in the patent scope of the present invention.

Claims

1. A multi-angle performance testing device for a bypass valve in a turbocharger, comprising a support platform (11), characterized in that: The carrier platform (11) is provided with a clamp assembly (91), a compressed air assembly (92), a blocking assembly (93) and an opening control device (94); The clamp assembly (91) is used to lock the turbocharger, specifically by locking the locking platform at the end of the exhaust arm in the turbine of the turbocharger to lock the turbocharger, the clamp assembly (91) includes a column (21) fixed on the supporting platform (11), a receiving groove (22) is provided in the upper side of the column (21), a supporting plate (23) for supporting the locking platform is provided on the bottom surface of the receiving groove (22), and a pressing mechanism for pressing down the locking platform is also provided in the column (21); The compressed air assembly (92) includes an air inlet hole (24) provided in the bottom surface of the accommodating groove (22), and the middle hole in the supporting plate (23) is connected to the through hole in the supporting plate (23) and is connected to the main flow channel in the locking platform. The lower side of the column (21) is connected to an air supply pipe (25), a flow sensor (26) is provided in the air supply pipe (25), and the air supply pipe (25) is connected to a constant pressure air supply device; The blocking assembly (93) comprises a cylinder (27) mounted on the carrier platform (11), wherein the end of the piston rod in the cylinder (27) is provided with a plug (28) for blocking the impeller groove in the turbine; The opening control device (94) is electrically connected to an electronic actuator in the turbocharger, and controls the opening of the bypass valve through the electronic actuator by adjusting the output voltage.

2. The multi-angle performance testing device for a turbocharger bypass valve according to claim 1, characterized in that: A groove adapted to the shape of the locking platform is provided in the upper side of the support plate (23), and the side surfaces of the support plate (23) are attached to the side edges of the accommodating groove (22); A sealing ring is respectively provided between the bottom surface of the groove and the lower side surface of the support plate (23), and the sealing ring is sleeved outside the middle hole.

3. The multi-angle performance testing device for a turbocharger bypass valve according to claim 1, characterized in that: The clamping mechanism includes slide grooves respectively arranged in the front and rear side surfaces of the accommodating groove (22), and a pressure plate (29) is slidably connected in each of the slide grooves. A through groove is provided in the pressure plate (29) and extends upward and forward and backward. A tooth surface is processed on the side surface of the through groove. A ring platform (30) is also installed on the outer curved surface of the column (21). Two drive shafts (31) respectively extending into the two slide grooves are rotatably connected in the ring platform (30), and a No. 1 gear engaged with the tooth surface is installed on the drive shaft (31). The column (21) is also equipped with a motor (32) for driving the drive shaft (31) to rotate.

4. The multi-angle performance testing device for a turbocharger bypass valve according to claim 3, characterized in that: A gear ring (33) is also provided on the outer curved surface of the column (21), and each of the drive shafts (31) is provided with a second gear meshing with the gear ring (33), and only one motor (32) is provided.

5. The multi-angle performance testing device for a turbocharger bypass valve according to claim 1, characterized in that: An adjustment groove (34) extending in the front-to-back direction is provided in the upper side surface of the carrier platform (11), an adjustment plate (35) is connected to the adjustment groove (34) in a front-to-back sliding manner, a vertical plate (36) is fixed on the adjustment plate (35), a lifting block (37) is connected to the vertical plate (36) in a vertical sliding manner, the cylinder (27) is fixed on the lifting block (37), and a piston rod in the cylinder (27) passes through the lifting block (37) to the left; A first adjustment shaft, which is threadedly connected to the adjustment plate (35) and extends in the front-to-back direction, is rotatably connected in the adjustment slot (34), and a second adjustment shaft, which is vertically arranged and threadedly connected to the lifting block (37), is rotatably connected in the vertical plate (36).

6. The multi-angle performance testing device for a turbocharger bypass valve according to claim 5, characterized in that: A ring plate (38) is sleeved on the outside of the piston rod, a sleeve (39) extending to the left is fixedly provided on the outer curved surface of the ring plate (38), a pressure sensor is provided on the side surface of the ring plate (38), and a diaphragm is provided in the sleeve (39) to abut against the pressure sensor; A rubber sleeve (40) is fixedly provided at the left end of the sleeve (39), and the rubber sleeve (40) extends to the left side of the plug (28).

7. The multi-angle performance testing device for a turbocharger bypass valve according to claim 6, characterized in that: The utility model further comprises a spray mechanism, wherein the spray mechanism comprises a water tank (41) fixed on the vertical plate (36), a nozzle (42) tilted downward to the right is installed on the lower side of the water tank (41), and the nozzle (42) is connected to the water tank (41), and a piston cylinder (43) is installed at the lower end of the water tank (41), a piston is connected to the piston cylinder (43) through a spring, and a piston rod is installed in the piston and passes through the piston cylinder (43) to the left, and a trigger rod (44) is installed at the end of the piston rod and extends downward, and an air inlet and an air outlet are provided in the right side of the piston cylinder (43), the air outlet is connected to the water tank (41) and is provided with a No. 1 one-way valve that flows outward relative to the piston cylinder (43), and the air inlet is provided with a No. 2 one-way valve that flows inward relative to the piston cylinder (43).

8. The multi-angle performance testing device for a turbocharger bypass valve according to claim 1, characterized in that: The opening control device (94) includes a box (51), a visual screen (52) for displaying voltage is provided on the box (51), and two buttons (53) for controlling the increase and decrease of voltage are provided on the box (51), and two numerical values can be displayed on the visual screen (52), one is the input voltage input to the electronic actuator to control the opening of the bypass valve, and the other is the output voltage fed back from the electronic actuator to the visual screen (52) to display the actual opening of the bypass valve.

9. A method for testing a multi-angle performance testing device for a bypass valve in a turbocharger according to any one of claims 1 to 8, characterized in that: The steps include: S1. Clamping the turbocharger: the staff inserts the locking platform downward into the support plate (23), and then controls the motor (32) to be energized. Under the action of the ring gear (33), the motor (32) can synchronously drive the two drive shafts (31) to rotate synchronously, so that the two pressure plates (29) are close to each other. At this time, the pressure plate (29) can be pressed on the upper edge of the locking platform, thereby cooperating with the support plate (23) to lock the locking platform, so that the turbocharger is locked; S2. Blocking: The staff controls the cylinder (27) so that the plug (28) is inserted into the turbine and blocks the impeller groove; S3. Pre-check: The staff connects the electronic actuator to the box (51) in the opening control device (94) through a wire, and the opening control device (94) automatically pre-checks the electronic actuator, that is, the opening control device (94) causes the bypass valve to be in a fully open state through the electronic actuator. At this time, the output voltage of the electronic actuator is displayed on the visual screen (52), and the staff can judge whether the input voltage when the bypass valve is in a fully open state is within a preset range based on the output voltage; Then, the staff presses the two buttons (53) at the same time, and the opening control device (94) can control the bypass valve to be in a fully closed state, and the staff can judge whether the output voltage in this state is within a preset range based on the output voltage displayed on the visual screen (52); S4. Conducting a test: The staff energizes the constant pressure air supply device and supplies air to the air supply pipe (25). The air in the air supply pipe (25) is discharged through the bypass hole in the turbine pressed by the support plate (23), and the flow sensor (26) can detect the air flow rate. The staff can control the bypass valve opening by the button (53) and judge whether the flow rate of the bypass hole in the turbine at this bypass valve opening meets the standard by observing the output value of the flow sensor (26).

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