A leakage detection device for a cooling water pump

Abstract

The present invention discloses a leakage detection device for a cooling water pump, including a detection frame, a pressure setting component, a sealing component and a pressurizing component. The beneficial effects of the present invention are as follows: Align the water outlet of the cooling water pump with the first connecting pipe, insert the first connecting pipe into the water outlet pipe of the cooling water pump, and then press the water outlet tightly on the rubber table. Cooperate to align the water inlet of the cooling water pump with the second connecting pipe, and press tightly between the water inlet of the cooling water pump and the mounting ring. The inner side wall of the sealing ring close to the mounting ring tightly adheres to the water inlet of the cooling water pump, and the sealing ring close to the following clamping plate tightly adheres to the water inlet pipe of the cooling water pump to seal the water inlet of the cooling water pump. Through the two fixing rings, several clamping plates and the sealing ring, not only can the water inlet and water outlet of the cooling water pump be respectively sealed, thereby improving the accuracy of testing the leakage situation of the cooling water pump, but also the device can test cooling water pumps of different models, with a wide test range and strong applicability, and has extremely high promotion value.

Description

Technical Field

[0001] The present invention relates to a leakage detection device, specifically a leakage detection device for a cooling water pump, and belongs to the application technical field of the leakage detection device for a cooling water pump. Background Technique

[0002] During the use of an automobile, problems such as leakage of the cooling water pump of the automobile engine may occur. When the cooling water pump of the automobile engine leaks, it will directly affect the engine speed, and then the vehicle speed will become unstable. When we encounter such a situation, we need to disassemble it in time and detect the cooling water pump of the automobile engine. Usually, the airtightness of the cooling water pump housing cavity is detected. The tester usually places the water pump cover plate in water and detects it by observing whether there are bubbles on the water pump cover plate. The accuracy is low. To improve the detection accuracy, it is necessary to use a leakage detection device to be connected to the water inlet and outlet of the cooling water pump respectively, seal the cooling water pump, and gradually fill the pump with pressurized water, release the air in the pump body through the drain valve. After the pressurized water fills the pump body, close the drain valve and continue to pressurize to the specified pressure value, close the inlet valve, keep the pressure unchanged, the tester visually observes the pressure gauge at regular intervals, observes the pressure change inside the tested water pump, records the pressure change data, and then calculates the leakage situation of the tested water pump, and then judges whether the cooling water pump leaks through the comparison of the pressure value data.

[0003] Chinese Patent with the application number CN2020210517250 discloses an airtightness detection device for the cooling water pump housing cavity of an automobile engine, including a water storage tank. A drain valve is installed at the lower position of one side surface of the water storage tank. Four legs are evenly installed on the lower end surface of the water storage tank. A bottom box for collecting dripping water is arranged directly above the water storage tank. A porous plate for supporting the legs is arranged at the upper position inside the bottom box. A plurality of support rods are evenly installed on the lower surface of the porous plate. The lower end of the support rod is in contact with the inner bottom of the bottom box. A pipe joint for connecting the drainage pipeline is installed at the lower position of one side surface of the bottom box. Compared with the prior art, the present invention has the following beneficial effects: it realizes the random dripping of water, is beneficial to keeping the working environment clean, improves safety. This patent has the problems that due to the high degree of manual participation in detecting the airtightness of the cooling water pump, the working intensity of workers is high, so the working efficiency is low. At the same time, when detecting the water pump cover plate by judging whether there are bubbles on the water pump cover plate, there are big human factors and low accuracy.

[0004] However, the current leakage detection device for cooling water pumps has great defects. The current leakage detection device detects the water pump cover plate by judging whether there are bubbles on the water pump cover plate, which has a large human factor and low accuracy. The existing leakage detection devices cannot match multiple models of cooling water pumps, and the applicable range is narrow. When the current leakage detection device is detecting, the pressurized water cannot be recycled, wasting resources. Summary of the Invention

[0005] In view of the problems in the prior art, the present invention provides a leakage detection device for a cooling water pump.

[0006] A leakage detection device for a cooling water pump includes a detection frame, a pressure setting component, a sealing component and a pressurizing component. The pressure setting component, the sealing component and the pressurizing component are all installed inside the detection frame. The sealing component includes a rubber table, a first connecting pipe and two fixing rings. The first connecting pipe penetrates through the rubber table and is fixedly connected to the rubber table. The two fixing rings are moved to both sides of the first connecting pipe. The water outlet of the cooling water pump is aligned with the first connecting pipe, and the first connecting pipe is inserted into the water outlet pipe of the cooling water pump, and then the water outlet is pressed tightly on the rubber table. By moving the two fixing rings closer to each other and tightly clamping the water outlet pipe of the cooling water pump, the cooling water pump is clamped.

[0007] Among them, the pressurizing component includes a bottom frame and a connecting component. The connecting component is moved to one side of the bottom frame. The connecting component includes a second connecting pipe, a plurality of clamping plates and a sealing ring. The plurality of clamping plates are arranged equidistantly around the second connecting pipe. The sealing ring is sleeved outside the second connecting pipe, and the sealing ring is located inside the plurality of clamping plates. An installation ring is installed at one end of the second connecting pipe. One end of the sealing ring is connected to one end of the installation ring, and the other end of the sealing ring is fixedly connected to the plurality of clamping plates. The water inlet of the cooling water pump is aligned with the second connecting pipe, and the second connecting pipe is inserted into the water inlet pipe of the cooling water pump. The water inlet of the cooling water pump is pressed tightly between the installation ring. By driving one end of the sealing ring to move with the plurality of clamping plates, the plurality of clamping plates are closely attached to the water inlet pipe of the cooling water pump, so that one end of the sealing ring moves with the clamping plates. The inner side wall of the sealing ring near the installation ring is closely attached to the water inlet of the cooling water pump, and the sealing ring near the clamping plates is closely attached to the water inlet pipe of the cooling water pump to seal the water inlet of the cooling water pump.

[0008] Preferably, a water discharge tank is installed at the bottom of the detection rack. A water discharge pipe is connected to one end of the water discharge tank. An electric valve is installed at the end of the water discharge pipe close to the water discharge tank. An installation pipe is installed at the end of the water discharge pipe far from the water discharge tank. A pressure gauge is installed in the middle of the installation pipe. The end of the installation pipe far from the water discharge pipe is connected to the first connecting pipe. A water inlet tank is installed at the top of the detection rack. A transfer pipe is connected between the water inlet tank and the second connecting pipe. An electric valve is installed between the transfer pipe and the second connecting pipe. Open the two electric valves. One of the pump bodies pumps water out of the water inlet tank, through the transfer pipe and into the second connecting pipe, and gradually fills the cooling water pump with pressurized water. The air in the cooling water pump is discharged through the electric valve on the water discharge pipe. When the pressurized water fills the cooling water pump, close the electric valve on the water discharge pipe and continue to pressurize to the specified pressure value to vent and pressurize the cooling water pump.

[0009] Preferably, the pressure setting assembly includes an operating table, a handle and two first slide rails. The operating table is located above the two first slide rails. The handle is installed at one end of the operating table. A rubber table is installed in the middle of the operating table. The two first slide rails are installed on the detection rack. Limit blocks are fixed at both ends of the two first slide rails. Sliders are installed on both sides of the lower part of the operating table. The cross-sections of the two first slide rails are both in an "I" shape structure. The sliders are adapted to the first slide rails and slide along the first slide rails. The operator pulls the handle, and the sliders slide along the first slide rails, thereby controlling the position of the operating table. Combined with the limit blocks, the movement range of the operating table is restricted to prevent the operator from accidentally pulling too hard and causing the pressure setting assembly and the sealing assembly to fall off the device and cause damage.

[0010] Preferably, connecting frames are installed at both ends of the two fixing rings. A first motor is installed on one side of the rubber table. The first motor is connected to a bidirectional lead screw through a rotating shaft. The two ends of the bidirectional lead screw respectively penetrate through the two connecting frames at one end of the two fixing rings. Screw holes are installed at the bottoms of the two connecting frames close to the bidirectional lead screw. The two screw holes are respectively in threaded cooperation with the two ends of the bidirectional lead screw. A slide bar is installed on the other side of the rubber table. The slide bar penetrates through the two connecting frames at the other end of the two fixing rings. The first motor drives the rotating shaft to drive the bidirectional lead screw to rotate. The two ends of the rotating bidirectional lead screw are respectively in threaded cooperation with the screw holes installed at the bottoms of the two connecting frames close to the bidirectional lead screw. Combined with the two connecting frames far from the bidirectional lead screw sliding along the slide bar, the two fixing rings are driven to approach or move away from each other.

[0011] Preferably, fixing components are provided on both sides of the pressure-applying component. The fixing component includes a fixing frame, a clamping frame, and a lifting frame. The clamping frame moves left and right on one side of the fixing frame, and the lifting frame moves up and down inside the clamping frame. The fixing frame is fixed on the detection frame. A first hydraulic cylinder is installed at the top of one side of the fixing frame. One end of the first hydraulic cylinder penetrates through a first hydraulic shaft, and the first hydraulic shaft is connected to the clamping frame. The two first hydraulic cylinders respectively drive the first hydraulic shafts to expand and contract, thereby respectively driving the clamping frames to move left and right, so that the two clamping frames approach or move away from each other. A second slide rail is installed on one side of the fixing frame close to the clamping frame at the bottom, and a second slider is installed at the bottom of the clamping frame. The cross-section of the second slide rail is in an "I" shape, and the second slider is adapted to the second slide rail. The second slider slides along the second slide rail. When the first hydraulic cylinder drives the first hydraulic shaft to drive the clamping frame to move left and right, the second slider sliding along the second slide rail can fix the moving direction of the clamping frame, making the clamping frame move more smoothly.

[0012] Preferably, a notch is provided at one end of the clamping frame, and a second motor is installed on one side of the clamping frame. The second motor is connected to a gear through a rotating shaft. The cross-section of the lifting frame is in a horizontally placed "U" shape, and a toothed plate is installed inside the lifting frame. The toothed plate meshes with the gear. The second motor drives the rotating shaft to drive the gear to rotate, and the rotating gear meshes with the toothed plate, thereby driving the lifting frame to move up and down.

[0013] Preferably, a number of first bottom blocks are equidistantly installed at one end of the mounting ring. The clamping plate is arranged in an arc shape. A second bottom block is installed on the inner side wall of the middle of the clamping plate. A connecting plate is hinged between the first bottom block and the second bottom block. A third motor for driving the connecting plate to rotate is installed at one end of the connecting plate close to the first bottom block. The third motor drives the connecting plate to drive the clamping plates to move back and forth, thereby driving a number of clamping plates to approach or move away from each other.

[0014] Preferably, the bottom frame is installed on the detection frame. The bottom frame is in an inverted "L" shape. A second hydraulic cylinder is installed inside the bottom frame. One end of the second hydraulic cylinder penetrates through a second hydraulic shaft. An installation block is installed at the bottom of the second hydraulic shaft. A third slide rail is installed on the inner side wall of one side of the bottom frame. A third slider is installed on one side of the installation block close to the third slide rail. The cross-section of the third slide rail is in an "I" shape, and the third slider slides along the third slide rail. The second hydraulic cylinder controls the expansion and contraction of the second hydraulic shaft. Combined with the third slider sliding along the third slide rail, the installation block is driven to lift smoothly.

[0015] Preferably, a motor four is installed on one side of the installation block away from the slider three. The motor four is connected to a rotating plate through a rotating shaft. A motor five is installed at the top of one end of the rotating plate away from the motor four. The motor five is connected to a turning plate through a rotating shaft. A motor six is installed at the bottom of one end of the turning plate away from the motor five. The motor six is connected to a folding plate one through a rotating shaft. A motor seven is installed at one end of the folding plate one away from the motor six. The motor seven is connected to a folding plate two through a rotating shaft. One end of the connecting pipe two away from the clamping plate penetrates through the bottom of the folding plate two, and the connecting pipe two is fixedly connected to the folding plate two. The motor four drives the rotating shaft to drive the rotating plate to rotate. The rotating rotating plate drives the connecting fitting to rotate through the turning plate, the folding plate one and the folding plate two, so that the connecting fitting is located on the side and above the cooling water pump, and then is connected to the water inlet of the cooling water pump with different models and positions. The motor five drives the rotating shaft to drive the turning plate to rotate. The rotating turning plate drives the connecting fitting to move left and right through the folding plate one and the folding plate two. The motor six drives the rotating shaft to drive the folding plate one to rotate. The rotating folding plate one drives the connecting fitting to rotate through the folding plate two. The motor seven drives the rotating shaft to drive the connecting fitting to rotate through the folding plate two, further accurately positioning the connecting fitting to align with the water inlet of the cooling water pump. Through the above cooperation, the connecting fitting can move flexibly on the side and above the fixed cooling water pump, and then accurately match the water inlet of the cooling water pump.

[0016] Preferably, the usage method of the leakage detection device specifically includes the following steps:

[0017] Step 1: The operator pulls the handle, and the slider one slides along the slide rail one, thereby controlling the position of the operating table to make the operating table close to the operator. The operator picks up the cooling water pump, aligns the water outlet of the cooling water pump with the connecting pipe one, inserts the connecting pipe one into the water outlet pipe of the cooling water pump, and then presses the water outlet tightly on the rubber table. The motor one drives the rotating shaft to drive the bidirectional lead screw to rotate. The two ends of the rotating bidirectional lead screw are respectively in threaded cooperation with the screw holes installed at the bottoms of the two connecting brackets close to the bidirectional lead screw. Combining the two connecting brackets away from the bidirectional lead screw slide along the slide rod, thereby driving the two fixing rings to approach or move away from each other. The two fixing rings approach and tightly stick to the water outlet pipe of the cooling water pump, sealing the water outlet and clamping the cooling water pump. The operator holds the cooling water pump with one hand and pushes the handle with the other hand, and places the cooling water pump between the two fixing components. The two hydraulic cylinders one respectively drive the hydraulic shafts one to expand and contract, thereby respectively driving the clamping brackets to move left and right, so that the two clamping brackets approach or move away from each other, clamping both sides of the cooling water pump. Cooperating with the motor two driving the rotating shaft to drive the gear to rotate, the rotating gear meshes with the toothed plate, thereby driving the lifting frame to move up and down, increasing the contact area between the fixing components and the cooling water pump, fixing both sides of the cooling water pump, and enabling the cooling water pump to be more stable;

[0018] Step 2: The second hydraulic cylinder controls the telescopic movement of the second hydraulic shaft. In combination with the sliding of the third slider along the third slide rail, the mounting block is driven to lift smoothly. The lifting mounting block drives the connecting assembly to lift through the rotating plate, the flipping plate, the first folding plate, and the second folding plate. In combination with the rotation of the rotating plate, the connecting assembly is driven to rotate through the flipping plate, the first folding plate, and the second folding plate, enabling the connecting assembly to move on the side and above the cooling water pump. Then, in cooperation with the rotation of the flipping plate, the connecting assembly is driven to move left and right through the first folding plate and the second folding plate. In combination with the rotation of the first folding plate, the connecting assembly is driven to rotate through the second folding plate. The seventh motor drives the rotating shaft to drive the connecting assembly to rotate through the second folding plate, aligning the connecting assembly with the water inlet of the cooling water pump. The third motor drives the connecting plate to drive the clamping plates to move back and forth, thereby driving a plurality of clamping plates to approach or move away from each other. The second connecting pipe is inserted into the water inlet pipe of the cooling water pump, and the space between the water inlet of the cooling water pump and the mounting ring is tightened. In combination with a plurality of clamping plates driving one end of the sealing ring to move, the plurality of clamping plates are pressed against the water inlet pipe of the cooling water pump, causing one end of the sealing ring to move along with the clamping plates. The inner side wall of the end of the sealing ring close to the mounting ring is closely attached to the water inlet of the cooling water pump, and the end of the sealing ring following the clamping plates is closely attached to the water inlet pipe of the cooling water pump, sealing the water inlet of the cooling water pump. This enables the device to, after fixing the cooling water pump, enable the connecting assembly to move flexibly to adapt to the water inlets of cooling water pumps of different models and positions.

[0019] Step 3: Open the two electric valves. One of the pump bodies pumps water from the water inlet tank through the transfer pipe into the second connecting pipe and gradually fills the cooling water pump with pressurized water. The air in the cooling water pump is discharged through the electric valve on the drain pipe. After the pressurized water fills the cooling water pump, close the electric valve on the drain pipe and continue to pressurize to the specified pressure value to conduct air release and pressurization on the cooling water pump. Close the electric valve installed on the transfer pipe. The operator visually observes the pressure gauge at regular intervals to observe the pressure change inside the water pump under test and records the pressure change data. The leakage of the cooling water pump is judged by comparing the pressure value data. After the test is completed, the water in the cooling water pump after the test enters the drain tank through the drain pipe. The pump body installed between the drain tank and the circulation pipe pumps the water in the drain tank and fills it into the water inlet tank through the circulation pipe for reuse during the next leakage detection. This not only avoids the frequent water replacement by the operator during the detection, reduces the workload of the operator, but also enables the recycling of pressurized water, reducing water waste.

[0020] The beneficial effects of the present invention:

[0021] (1) In the present invention, the water outlet of the cooling water pump is aligned with the first connecting pipe, and the first connecting pipe is inserted into the water outlet pipe of the cooling water pump. Then, the water outlet is pressed tightly on the rubber platform. The two fixing rings are close to each other and tightly hold the water outlet pipe of the cooling water pump, clamping the cooling water pump to keep it fixed while sealing the water outlet of the cooling water pump. Then, in cooperation with aligning the water inlet of the cooling water pump with the second connecting pipe, inserting the second connecting pipe into the water inlet pipe of the cooling water pump, pressing tightly between the water inlet of the cooling water pump and the mounting ring, several clamping plates drive one end of the sealing ring to move, and several clamping plates are closely attached to the water inlet pipe of the cooling water pump, so that one end of the sealing ring follows the clamping plates to move. The inner side wall of the sealing ring near the mounting ring is closely attached to the water inlet of the cooling water pump, and the sealing ring is closely attached to the water inlet pipe of the cooling water pump following the clamping plates to seal the water inlet of the cooling water pump. Through the cooperation of the two fixing rings, several clamping plates and the sealing ring, not only can the water inlet and water outlet of the cooling water pump be respectively sealed to avoid water leakage at the water inlet and water outlet of the cooling water pump, but also the device can seal the water inlet and water outlet of cooling water pumps with different diameters, so as to test different models of cooling water pumps. The test range is wide, the applicability is strong, and it has extremely high popularization value.

[0022] (2) After the test is completed inside the cooling water pump in the present invention, the water inside the cooling water pump enters the water discharge tank through the water discharge pipe. The pump body installed between the water discharge tank and the circulation pipe pumps out the water in the water discharge tank and then fills it into the water inlet tank through the circulation pipe for reuse during the next leakage detection. This not only avoids frequent water replacement by the operator during the detection, reduces the workload of the operator, but also can recycle the pressurized water, reduces water waste, is conducive to saving water resources and cost.

[0023] (3) In the present invention, the two first hydraulic cylinders respectively drive the first hydraulic shafts to expand and contract, and then drive the clamping frames to move left and right respectively, so that the two clamping frames approach or move away from each other, thereby clamping both sides of the cooling water pump. In cooperation with aligning the water outlet of the cooling water pump with the first connecting pipe, inserting the first connecting pipe into the water outlet pipe of the cooling water pump, and then pressing the water outlet tightly on the rubber platform. The two fixing rings are close to each other and tightly hold the water outlet pipe of the cooling water pump to clamp the cooling water pump. Through the above cooperation, the device can not only seal the water outlet of the cooling water pump and clamp and fix the water pump from three sides of the cooling water pump, but also combine the second motor to drive the rotating shaft to drive the gear to rotate. The rotating gear meshes with the toothed plate, and then drives the lifting frame to move up and down, so as to increase the contact area between the fixing component and the cooling water pump, make the device hold the cooling water pump more stably. Then, during the pressure detection, the cooling water pump will not shake back and forth, greatly improving the accuracy of the detection result.

[0024] (4) In the present invention, the hydraulic cylinder two controls the telescopic movement of the hydraulic shaft two. In combination with the sliding of the slider three along the slide rail three, the mounting block is driven to lift smoothly. The lifting mounting block drives the connecting fitting to lift through the rotating plate, the flipping plate, the folding plate one and the folding plate two. In combination with the rotation of the rotating plate, the connecting fitting is driven to rotate through the flipping plate, the folding plate one and the folding plate two, enabling the connecting fitting to move on the side and above the cooling water pump. Further, in combination with the rotation of the flipping plate, the connecting fitting is driven to move left and right through the folding plate one and the folding plate two. In combination with the rotation of the folding plate one, the connecting fitting is driven to rotate through the folding plate two. The motor seven drives the rotating shaft to drive the connecting fitting to rotate through the folding plate two, further accurately positioning the connecting fitting to align with the water inlet of the cooling water pump. After the device can fix the cooling water pump, the connecting fitting can move flexibly to adapt to the water inlets of cooling water pumps of different models and positions, making the device highly flexible during use and having a high matching degree with cooling water pumps of different models, and thus leakage detection can be carried out on various cooling water pumps. Description of the Drawings

[0025] The present invention will be further described below in conjunction with the drawings and embodiments.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 It is a schematic diagram of the connection of the pressure setting component, the sealing component, the fixing component and the pressurizing component in the present invention.

[0028] Figure 3 It is a schematic diagram of the connection of the pressure setting component and the sealing component in the present invention.

[0029] Figure 4 It is a schematic diagram of the structure of the sealing component in the present invention.

[0030] Figure 5 It is a top view of the sealing component in the present invention.

[0031] Figure 6 It is a schematic diagram of the structure of the fixing component in the present invention.

[0032] Figure 7 It is a schematic diagram of the gear structure in the present invention.

[0033] Figure 8 It is a schematic diagram of the structure of the lifting frame in the present invention.

[0034] Figure 9 It is a schematic diagram of the structure of the pressurizing component in the present invention.

[0035] Figure 10 It is a schematic diagram of the structure of the connecting fitting after removing the sealing ring in the present invention.

[0036] In the figure: 1. Detection frame; 2. Pressure setting component; 201. Operating table; 202. Handle; 203. First slide rail; 204. Limit block; 205. First slider; 3. Sealing component; 301. Rubber table; 302. First connecting pipe; 303. Fixed ring; 304. Connecting frame; 305. First motor; 306. Bi-directional lead screw; 307. Slide bar; 4. Water discharge tank; 5. Water discharge pipe; 501. Pressure gauge; 502. Installation pipe; 6. Fixing component; 601. Fixing frame; 602. Second slide rail; 603. First hydraulic cylinder; 604. First hydraulic shaft; 605. Clamping frame; 606. Second slider; 607. Lifting frame; 608. Tooth plate; 609. Second motor; 610. Gear; 7. Pressure boosting component; 701. Bottom frame; 702. Second hydraulic cylinder; 703. Second hydraulic shaft; 704. Installation block; 705. Third slide rail; 706. Third slider; 707. Rotating plate; 708. Flipping plate; 709. First folding plate; 710. Second folding plate; 711. Connecting fitting; 7111. Second connecting pipe; 7112. Clamping plate; 7113. Sealing ring; 7114. Installation ring; 7115. First bottom block; 7116. Second bottom block; 7117. Connecting plate; 7118. Third motor; 712. Electric valve; 713. Fourth motor; 714. Fifth motor; 715. Sixth motor; 716. Seventh motor; 8. Water inlet tank; 9. Transfer pipe; 10. Circulation pipe. Detailed implementation manner

[0037] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with the specific implementation manners.

[0038] As Figures 1 - 10 shown, a leakage detection device for a cooling water pump includes a detection frame 1, a pressure setting component 2, a sealing component 3 and a pressure boosting component 7. The pressure setting component 2, the sealing component 3 and the pressure boosting component 7 are all installed inside the detection frame 1. The sealing component 3 includes a rubber table 301, a first connecting pipe 302 and two fixed rings 303. The first connecting pipe 302 penetrates through the rubber table 301 and is fixedly connected to the rubber table 301. The two fixed rings 303 are moved to both sides of the first connecting pipe 302. The water outlet of the cooling water pump is aligned with the first connecting pipe 302, and the first connecting pipe 302 is inserted into the water outlet pipe of the cooling water pump, and then the water outlet is pressed tightly on the rubber table 301. By moving the two fixed rings 303 closer to each other to tightly hold the water outlet pipe of the cooling water pump, the cooling water pump is clamped, so that the device can fix the cooling water pump and keep it fixed while sealing the water outlet of the cooling water pump.

[0039] Among them, the pressurizing assembly 7 includes a chassis 701 and a connecting fitting 711. The connecting fitting 711 is moved to one side of the chassis 701. The connecting fitting 711 includes a second connecting pipe 7111, a plurality of clamping plates 7112 and a sealing ring 7113. The material of the sealing ring 7113 is natural rubber. Compared with most synthetic rubbers, natural rubber has good comprehensive mechanical properties, cold resistance, higher resilience and wear resistance. Generally, sealants are also commonly made of natural rubber. A plurality of clamping plates 7112 are arranged at equal distances around the second connecting pipe 7111. The sealing ring 7113 is sleeved outside the second connecting pipe 7111. The sealing ring 7113 is located inside the plurality of clamping plates 7112. An installation ring 7114 is installed at one end of the second connecting pipe 7111. One end of the sealing ring 7113 is connected to one end of the installation ring 7114. The other end of the sealing ring 7113 is fixedly connected to the plurality of clamping plates 7112. Align the water inlet of the cooling water pump with the second connecting pipe 7111. Insert the second connecting pipe 7111 into the water inlet pipe of the cooling water pump. Press tightly between the water inlet of the cooling water pump and the installation ring 7114. Combine the plurality of clamping plates 7112 to drive one end of the sealing ring 7113 to move. The plurality of clamping plates 7112 are closely attached to the water inlet pipe of the cooling water pump, so that one end of the sealing ring 7113 moves along with the clamping plates 7112. The inner side wall of the sealing ring 7113 near one end of the installation ring 7114 is closely attached to the water inlet of the cooling water pump. The sealing ring 7113 is closely attached to the water inlet pipe of the cooling water pump following the clamping plates 7112, sealing the water inlet of the cooling water pump to prevent water leakage at the water inlet during testing and increasing the accuracy of the detection results.

[0040] In an alternative embodiment of the embodiment of the present invention, a water discharge tank 4 is installed at the bottom of the detection rack 1. A filter screen is provided in the middle of the water discharge tank 4, which can filter impurities. A water discharge pipe 5 is connected to one end of the water discharge tank 4. An electric valve 712 (model: ZB-15N) is installed at the end of the water discharge pipe 5 close to the water discharge tank 4. An installation pipe 502 is installed at the end of the water discharge pipe 5 far from the water discharge tank 4. A pressure gauge 501 (model: Y60ZBF) is installed in the middle of the installation pipe 502. The end of the installation pipe 502 far from the water discharge pipe 5 is connected to the first connecting pipe 302. A water inlet tank 8 is installed at the top of the detection rack 1. A transfer pipe 9 is connected between the water inlet tank 8 and the second connecting pipe 7111. An electric valve 712 is installed between the transfer pipe 9 and the second connecting pipe 7111. Two pump bodies are installed on the detection rack 1. One is between the water inlet tank 8 and the transfer pipe 9, and the other is installed between the water discharge tank 4 and the circulation pipe 10. Open the two electric valves 712. One of the pump bodies pumps water out of the water inlet tank 8, passes through the transfer pipe 9 and enters the second connecting pipe 7111, and gradually fills the cooling water pump with pressurized water. The air in the cooling water pump is discharged through the electric valve 712 on the water discharge pipe 5. When the pressurized water fills the cooling water pump, close the electric valve 712 on the water discharge pipe 5 and continue to pressurize to the specified pressure value to vent and pressurize the cooling water pump. The water tested in the cooling water pump enters the water discharge tank 4 through the water discharge pipe 5. The pump body installed between the water discharge tank 4 and the circulation pipe 10 pumps the water in the water discharge tank 4 out and then fills it into the water inlet tank 8 through the circulation pipe 10 for reuse during the next leak detection. This not only avoids frequent water replacement by the operator during detection, reduces the workload of the operator, but also enables the recycled use of pressurized water, reduces water waste, is conducive to saving water resources, and saves costs.

[0041] In an alternative embodiment of the embodiment of the present invention, the pressure setting assembly 2 includes an operating table 201, a handle 202, and two first slide rails 203. The operating table 201 is located above the two first slide rails 203. The handle 202 is installed at one end of the operating table 201. A rubber table 301, the material of the rubber table 301 is neoprene, and neoprene has good oil and solvent resistance, and also has excellent weather and ozone aging resistance, is installed in the middle of the operating table 201. A first connecting pipe 302 penetrates through the operating table 201. An installation pipe 502 is located below the operating table 201. A pressure gauge 501 is located at one end of the operating table 201 close to the handle 202, so that the pressure gauge 501 is close to the operator, facilitating the operator to observe the pressure value at any time to judge whether the cooling water pump leaks, which is convenient for use. The two first slide rails 203 are installed on the detection frame 1. Limit blocks 204 are fixed at both ends of the two first slide rails 203. First sliders 205 are installed on both sides below the operating table 201. The cross-sections of the two first slide rails 203 are both in an "I" - shaped structure. The first sliders 205 are adapted to the first slide rails 203, and the first sliders 205 slide along the first slide rails 203. The operator pulls the handle 202, and the first sliders 205 slide along the first slide rails 203, thereby controlling the position of the operating table 201. Combined with the limit blocks 204, the movement range of the operating table 201 is restricted, preventing the operator from accidentally pulling too hard and causing the pressure setting assembly 2 and the sealing assembly 3 to fall off the device and be damaged, thus extending the service life of the device.

[0042] In an alternative embodiment of the embodiment of the present invention, connecting frames 304 are installed at both ends of the two fixing rings 303. A first motor 305 is installed on one side of the rubber table 301. The first motor 305 is connected to a bidirectional lead screw 306 through a rotating shaft. The two ends of the bidirectional lead screw 306 respectively penetrate through the two connecting frames 304 at one end of the two fixing rings 303. Screw holes are installed at the bottoms of the two connecting frames 304 close to the bidirectional lead screw 306, and the two screw holes are respectively in threaded cooperation with the two ends of the bidirectional lead screw 306. A slide bar 307 is installed on the other side of the rubber table 301. The slide bar 307 penetrates through the two connecting frames 304 at the other end of the two fixing rings 303. The first motor 305 drives the rotating shaft to drive the bidirectional lead screw 306 to rotate. The two ends of the rotating bidirectional lead screw 306 are respectively in threaded cooperation with the screw holes installed at the bottoms of the two connecting frames 304 close to the bidirectional lead screw 306. Combined with the two connecting frames 304 far from the bidirectional lead screw 306 sliding along the slide bar 307, the two fixing rings 303 are driven to approach or move away from each other, providing power support for the two fixing rings 303 and ensuring the feasibility of the movement of the two fixing rings 303.

[0043] In an alternative embodiment of the embodiment of the present invention, fixing components 6 are provided on both sides of the pressure setting component 2. The fixing component 6 includes a fixing frame 601, a clamping frame 605 and a lifting frame 607. The clamping frame 605 moves left and right on one side of the fixing frame 601, and the lifting frame 607 moves up and down inside the clamping frame 605. The fixing frame 601 is fixed on the detection frame 1. A first hydraulic cylinder 603 is installed at the top of one side of the fixing frame 601. One end of the first hydraulic cylinder 603 penetrates through a first hydraulic shaft 604. The first hydraulic shaft 604 is connected to the clamping frame 605. The two first hydraulic cylinders 603 respectively drive the first hydraulic shafts 604 to expand and contract, and then respectively drive the clamping frames 605 to move left and right, so that the two clamping frames 605 approach or move away from each other, thereby clamping both sides of the cooling water pump to ensure the stability of the cooling water pump. A second slide rail 602 is installed at the bottom of the fixing frame 601 on the side close to the clamping frame 605. A second slider 606 is installed at the bottom of the clamping frame 605. The cross section of the second slide rail 602 is in an "I" shape structure, and the second slider 606 is adapted to the second slide rail 602. The second slider 606 slides along the second slide rail 602. When the first hydraulic cylinder 603 drives the first hydraulic shaft 604 to drive the clamping frame 605 to move left and right, the second slider 606 sliding along the second slide rail 602 can fix the moving direction of the clamping frame 605, making the clamping frame 605 move more smoothly and not shake when clamping the cooling water pump, so that the cooling water pump can be fixed more stably.

[0044] In an alternative embodiment of the embodiment of the present invention, a notch is provided at one end of the clamping frame 605, and a second motor 609 is installed on one side of the clamping frame 605. The second motor 609 is connected to a gear 610 through a rotating shaft. The cross-section of the lifting frame 607 is in a horizontally placed "U" shape. A toothed plate 608 is installed in the lifting frame 607. The toothed plate 608 meshes with the gear 610. The second motor 609 drives the rotating shaft to drive the gear 610 to rotate. The rotating gear 610 meshes with the toothed plate 608, thereby driving the lifting frame 607 to move up and down, ensuring the stability of the lifting frame 607. The two first hydraulic cylinders 603 respectively drive the first hydraulic shafts 604 to expand and contract, thereby respectively driving the clamping frames 605 to move left and right, so that the two clamping frames 605 approach or move away from each other, thereby clamping both sides of the cooling water pump, and cooperating with the water outlet of the cooling water pump to align with the first connecting pipe 302, inserting the first connecting pipe 302 into the water outlet pipe of the cooling water pump, and then pressing the water outlet against the rubber table 301. The two fixing rings 303 approach each other and closely adhere to the water outlet pipe of the cooling water pump to clamp the cooling water pump. Through the above cooperation, the device can not only seal the water outlet of the cooling water pump, clamp and fix the water pump from three sides of the cooling water pump, but also combine the second motor 609 to drive the rotating shaft to drive the gear 610 to rotate. The rotating gear 610 meshes with the toothed plate 608, thereby driving the lifting frame 607 to move up and down, and further increasing the contact area between the fixing component 6 and the cooling water pump, making the cooling water pump more stable. Therefore, during the pressure detection, the cooling water pump will not shake back and forth, greatly improving the accuracy of the detection result.

[0045] In an alternative embodiment of the embodiment of the present invention, a number of first bottom blocks 7115 are equidistantly installed at one end of the mounting ring 7114. The clamping plate 7112 is arranged in an arc shape. A second bottom block 7116 is installed on the inner side wall of the middle of the clamping plate 7112. A connecting plate 7117 is hinged between the first bottom block 7115 and the second bottom block 7116. A third motor 7118 for driving the connecting plate 7117 to rotate is installed at one end of the connecting plate 7117 close to the first bottom block 7115. The third motor 7118 drives the connecting plate 7117 to drive the clamping plate 7112 to move back and forth, thereby driving a number of clamping plates 7112 to approach or move away from each other, providing power support for the clamping plate 7112 and ensuring the feasibility of the movement of the clamping plate 7112.

[0046] In an alternative embodiment of the embodiment of the present invention, the chassis 701 is installed on the detection frame 1. The chassis 701 has an inverted "L" - shaped structure. A second hydraulic cylinder 702 is installed inside the chassis 701. A second hydraulic shaft 703 penetrates through one end of the second hydraulic cylinder 702. An installation block 704 is installed at the bottom of the second hydraulic shaft 703. A third slide rail 705 is installed on one inner side wall of the chassis 701. A third slider 706 is installed on one side of the installation block 704 close to the third slide rail 705. The cross - section of the third slide rail 705 has an "I" - shaped structure. The third slider 706 slides along the third slide rail 705. The second hydraulic cylinder 702 controls the telescopic movement of the second hydraulic shaft 703. Combining with the sliding of the third slider 706 along the third slide rail 705, the installation block 704 is driven to rise and fall smoothly, ensuring the stability of the installation block 704 during the lifting process.

[0047] In an alternative embodiment of the embodiment of the present invention, a fourth motor 713 is installed on one side of the installation block 704 away from the third slider 706. The fourth motor 713 is connected to a rotating plate 707 through a rotating shaft. A fifth motor 714 is installed at the top of one end of the rotating plate 707 away from the fourth motor 713. The fifth motor 714 is connected to a flipping plate 708 through a rotating shaft. A sixth motor 715 is installed at the bottom of one end of the flipping plate 708 away from the fifth motor 714. The sixth motor 715 is connected to a first folding plate 709 through a rotating shaft. A seventh motor 716 is installed at one end of the first folding plate 709 away from the sixth motor 716. The seventh motor 716 is connected to a second folding plate 710 through a rotating shaft. One end of the second connecting pipe 7111 away from the clamping plate 7112 penetrates through the bottom of the second folding plate 710, and the second connecting pipe 7111 is fixedly connected to the second folding plate 710. The fourth motor 713 drives the rotating shaft to drive the rotating plate 707 to rotate. The rotating rotating plate 707 drives the connecting assembly 711 to rotate through the flipping plate 708, the first folding plate 709 and the second folding plate 710, so that the connecting assembly 711 is located on the side and above the cooling water pump, and then is connected to the water inlet of the cooling water pump with different models and positions. The fifth motor 714 drives the rotating shaft to drive the flipping plate 708 to rotate. The rotating flipping plate 708 drives the connecting assembly 711 to move left and right through the first folding plate 709 and the second folding plate 710. The sixth motor 715 drives the rotating shaft to drive the first folding plate 709 to rotate. The rotating first folding plate 709 drives the connecting assembly 711 to rotate through the second folding plate 710. The seventh motor 716 drives the rotating shaft to drive the connecting assembly 711 to rotate through the second folding plate 710, further accurately positioning the connecting assembly 711 to align with the water inlet of the cooling water pump. Through the above cooperation, the connecting assembly 711 can move flexibly on the side and above the fixed cooling water pump, and then accurately match the water inlet of the cooling water pump, improving the adaptability of the device to cooling water pumps of different models.

[0048] In an alternative embodiment of the embodiment of the present invention, the usage method of the leakage detection device specifically includes the following steps:

[0049] Step 1: The operator pulls the handle 202, and the first slider 205 slides along the first slide rail 203, thereby controlling the position of the operating table 201 to make the operating table 201 close to the operator. The operator picks up the cooling water pump, aligns the water outlet of the cooling water pump with the first connecting pipe 302, and inserts the first connecting pipe 302 into the water outlet pipe of the cooling water pump, and then presses the water outlet tightly on the rubber table 301. The first motor 305 drives the rotating shaft to drive the bidirectional lead screw 306 to rotate. The two ends of the rotating bidirectional lead screw 306 are respectively in threaded cooperation with the screw holes installed at the bottoms of the two connecting frames 304 close to the bidirectional lead screw 306. Combining with the two connecting frames 304 far from the bidirectional lead screw 306 sliding along the slide rod 307, thereby driving the two fixing rings 303 to approach or move away from each other. The two fixing rings 303 approach each other and closely adhere to the water outlet pipe of the cooling water pump, sealing the water outlet and clamping the cooling water pump. The operator holds the cooling water pump with one hand and pushes the handle with the other hand, and places the cooling water pump between the two fixing components 6. The two first hydraulic cylinders 603 respectively drive the first hydraulic shafts 604 to expand and contract, thereby respectively driving the clamping frames 605 to move left and right, so that the two clamping frames 605 approach or move away from each other, clamping both sides of the cooling water pump. Cooperating with the second motor 609 driving the rotating shaft to drive the gear 610 to rotate, the rotating gear 610 meshes with the toothed plate 608, thereby driving the lifting frame 607 to move up and down, increasing the contact area between the fixing component 6 and the cooling water pump, fixing both sides of the cooling water pump, enabling the cooling water pump to be more stable. Therefore, during the pressure setting and detection, the cooling water pump will not shake back and forth, greatly improving the accuracy of the detection result;

[0050] Step 2: The hydraulic cylinder 2 (702) controls the telescopic movement of the hydraulic shaft 2 (703). In combination with the slider 3 (706) sliding along the slide rail 3 (705), it drives the smooth lifting of the mounting block 704. The lifting mounting block 704 drives the connecting assembly 711 to lift through the rotating plate 707, the flipping plate 708, the folding plate 1 (709) and the folding plate 2 (710). In combination with the rotating rotating plate 707, it drives the connecting assembly 711 to rotate through the flipping plate 708, the folding plate 1 (709) and the folding plate 2 (710), causing the connecting assembly 711 to move on the side and above the cooling water pump. Then, in cooperation with the rotating flipping plate 708, it drives the connecting assembly 711 to move left and right through the folding plate 1 (709) and the folding plate 2 (710). In combination with the rotating folding plate 1 (709), it drives the connecting assembly 711 to rotate through the folding plate 2 (710). The motor 7 (716) drives the rotating shaft to drive the connecting assembly 711 to rotate through the folding plate 2 (710), aligning the connecting assembly 711 with the water inlet of the cooling water pump. The motor 3 (7118) drives the connecting plate 7117 to drive the clamping plate 7112 to move back and forth, thereby driving a plurality of clamping plates 7112 to approach or move away from each other, inserting the connecting pipe 2 (7111) into the water inlet pipe of the cooling water pump, and pressing tightly between the water inlet of the cooling water pump and the mounting ring 7114. In combination with a plurality of clamping plates 7112 driving one end of the sealing ring 7113 to move, a plurality of clamping plates 7112 are pressed against the water inlet pipe of the cooling water pump, causing one end of the sealing ring 7113 to move along with the clamping plates 7112. The inner side wall of the end of the sealing ring 7113 close to the mounting ring 7114 is closely attached to the water inlet of the cooling water pump, and the sealing ring 7113 is closely attached to the water inlet pipe of the cooling water pump following the clamping plates 7112, sealing the water inlet of the cooling water pump. After the cooling water pump is fixed, the connecting assembly 711 can move flexibly to adapt to the water inlets of cooling water pumps of different models and positions, making the device highly flexible during use and having a high matching degree with cooling water pumps of different models. Furthermore, leakage detection can be performed on various cooling water pumps, making it suitable for popularization and use;

[0051] Step 3: Open two electric valves 712. One of the pump bodies pumps water out of the water inlet tank 8, through the transfer pipe 9 into the second connecting pipe 7111, and gradually fills the cooling water pump with pressurized water. The air in the cooling water pump is discharged through the electric valve 712 on the drain pipe 5. When the pressurized water fills the cooling water pump, close the electric valve 712 on the drain pipe 5, and continue to pressurize to the specified pressure value. Vent and pressurize the cooling water pump, then close the electric valve 712 installed on the transfer pipe 9. The operator visually observes the pressure gauge at regular intervals, observes the pressure change inside the water pump under test, records the pressure change data, and determines whether the cooling water pump leaks by comparing the pressure value data. After the test is completed, the water that has completed the test in the cooling water pump enters the water discharge tank 4 through the drain pipe 5. The pump body installed between the water discharge tank 4 and the circulation pipe 10 pumps the water in the water discharge tank 4 out and then fills the water inlet tank 8 through the circulation pipe 10 for reuse during the next leakage detection. This not only avoids the frequent water replacement by the operator during the detection, reduces the workload of the operator, but also can recycle the pressurized water, reduces water waste, is conducive to saving water resources, and saves costs.

[0052] When in use, first, the operator pulls the handle 202, and the first slider 205 slides along the first slide rail 203, thereby controlling the position of the operating platform 201 to make the operating platform 201 close to the operator. The operator picks up the cooling water pump, aligns the water outlet of the cooling water pump with the first connecting pipe 302, inserts the first connecting pipe 302 into the water outlet pipe of the cooling water pump, and then presses the water outlet tightly on the rubber platform 301. The first motor 305 drives the rotating shaft to drive the bidirectional lead screw 306 to rotate. The two ends of the rotating bidirectional lead screw 306 are respectively in threaded fit with the screw holes installed at the bottoms of the two connecting brackets 304 close to the bidirectional lead screw 306. Combining with the two connecting brackets 304 far from the bidirectional lead screw 306 sliding along the slide rod 307, thereby driving the two fixing rings 303 to approach or move away from each other. The two fixing rings 303 approach each other and tightly adhere to the water outlet pipe of the cooling water pump, sealing the water outlet and clamping the cooling water pump. The operator holds the cooling water pump with one hand and pushes the handle with the other hand, and places the cooling water pump between the two fixing components 6. The two first hydraulic cylinders 603 respectively drive the first hydraulic shafts 604 to expand and contract, thereby respectively driving the clamping brackets 605 to move left and right, so that the two clamping brackets 605 approach or move away from each other, clamping both sides of the cooling water pump. Cooperating with the second motor 609 driving the rotating shaft to drive the gear 610 to rotate, the rotating gear 610 meshes with the toothed plate 608, thereby driving the lifting frame 607 to move up and down, increasing the contact area between the fixing component 6 and the cooling water pump, fixing both sides of the cooling water pump, enabling the cooling water pump to be more stable, and thus during the pressure setting detection, the cooling water pump will not shake back and forth, greatly improving the accuracy of the detection result;

[0053] Then, the hydraulic cylinder two 702 controls the telescopic movement of the hydraulic shaft two 703. In combination with the sliding of the slider three 706 along the slide rail three 705, it drives the stable lifting of the mounting block 704. The lifting mounting block 704 drives the connecting fitting 711 to lift through the rotating plate 707, the flipping plate 708, the folding plate one 709 and the folding plate two 710. In combination with the rotation of the rotating plate 707, it drives the connecting fitting 711 to rotate through the flipping plate 708, the folding plate one 709 and the folding plate two 710, so that the connecting fitting 711 moves on the side and above the cooling water pump. Then, in cooperation with the rotation of the flipping plate 708, it drives the connecting fitting 711 to move left and right through the folding plate one 709 and the folding plate two 710. In combination with the rotation of the folding plate one 709, it drives the connecting fitting 711 to rotate through the folding plate two 710. The motor seven 716 drives the rotating shaft to drive the connecting fitting 711 to rotate through the folding plate two 710, so that the connecting fitting 711 is aligned with the water inlet of the cooling water pump. The motor three 7118 drives the connecting plate 7117 to drive the clamping plate 7112 to move back and forth, and then drives a plurality of clamping plates 7112 to approach or move away from each other. The connecting pipe two 7111 is inserted into the water inlet pipe of the cooling water pump, and the water inlet of the cooling water pump is pressed tightly between the mounting ring 7114. In combination with a plurality of clamping plates 7112 driving one end of the sealing ring 7113 to move, a plurality of clamping plates 7112 are tightly attached to the water inlet pipe of the cooling water pump, so that one end of the sealing ring 7113 moves along with the clamping plate 7112. The inner side wall of the sealing ring 7113 close to one end of the mounting ring 7114 is tightly attached to the water inlet of the cooling water pump, and the sealing ring 7113 close to the clamping plate 7112 is tightly attached to the water inlet pipe of the cooling water pump, sealing the water inlet of the cooling water pump. After the cooling water pump is fixed, the connecting fitting 711 can move flexibly to adapt to the water inlets of cooling water pumps of different models and positions, making the device highly flexible during use and having a high matching degree with cooling water pumps of different models. Furthermore, leakage detection can be carried out on a variety of cooling water pumps, which is suitable for popularization and use;

[0054] Finally, open the two electric valves 712. One of the pump bodies pumps water out of the water inlet tank 8, through the transfer pipe 9 and into the second connecting pipe 7111, and gradually fills the cooling water pump with pressurized water. The air in the cooling water pump is released through the electric valve 712 on the water discharge pipe 5. When the pressurized water fills the cooling water pump, close the electric valve 712 on the water discharge pipe 5, and continue to pressurize to the specified pressure value to vent and pressurize the cooling water pump. Then, close the electric valve 712 installed on the transfer pipe 9. The operator visually observes the pressure gauge at regular intervals, observes the pressure change inside the water pump under test, records the pressure change data, and judges whether the cooling water pump leaks by comparing the pressure value data. After the test is completed, the water in the cooling water pump after the test enters the water discharge tank 4 through the water discharge pipe 5. The pump body installed between the water discharge tank 4 and the circulation pipe 10 pumps the water in the water discharge tank 4 out and then fills the water inlet tank 8 through the circulation pipe 10 for reuse during the next leakage detection. This not only avoids the frequent water replacement by the operator during the detection, reduces the workload of the operator, but also can recycle the pressurized water, reduce water waste, is conducive to saving water resources, and saves costs.

[0055] In the present invention, the water outlet of the cooling water pump is aligned with the first connecting pipe 302, and the first connecting pipe 302 is inserted into the water outlet pipe of the cooling water pump, and then the water outlet is pressed tightly on the rubber platform 301. The two fixing rings 303 are close to each other and tightly hold the water outlet pipe of the cooling water pump, clamping the cooling water pump to keep it fixed while sealing the water outlet of the cooling water pump. Then, in cooperation with aligning the water inlet of the cooling water pump with the second connecting pipe 7111, inserting the second connecting pipe 7111 into the water inlet pipe of the cooling water pump, pressing tightly between the water inlet of the cooling water pump and the mounting ring 7114, and driving one end of the sealing ring 7113 to move by several clamping plates 7112. The several clamping plates 7112 are close to the water inlet pipe of the cooling water pump, so that one end of the sealing ring 7113 moves along with the clamping plates 7112. The inner side wall of the end of the sealing ring 7113 close to the mounting ring 7114 tightly adheres to the water inlet of the cooling water pump, and the sealing ring 7113 close to the clamping plates 7112 tightly adheres to the water inlet pipe of the cooling water pump to seal the water inlet of the cooling water pump. Through the cooperation of the two fixing rings 303, several clamping plates 7112 and the sealing ring 7113, not only can the water inlet and water outlet of the cooling water pump be respectively sealed to avoid water leakage at the water inlet and water outlet of the cooling water pump, but also the device can seal the water inlet and water outlet of cooling water pumps with different diameters, so as to test different models of cooling water pumps. The test range is wide, the applicability is strong, and it has extremely high promotion value.

[0056] After the device in the present invention is tested in the cooling water pump, the water inside the cooling water pump enters the water discharge tank 4 through the water discharge pipe 5. The pump body installed between the water discharge tank 4 and the circulation pipe 10 pumps out the water in the water discharge tank 4 and then fills the water into the water inlet tank 8 through the circulation pipe 10 for reuse during the next leakage detection. This not only avoids frequent water replacement by operators during detection, reduces the workload of the operators, but also enables the recycled use of pressurized water, reduces water waste, is conducive to saving water resources, and saves costs.

[0057] In the present invention, the two hydraulic cylinders I 603 drive the hydraulic shafts I 604 to expand and contract respectively, and then drive the clamping frames 605 to move left and right respectively, so that the two clamping frames 605 approach or move away from each other, thereby clamping both sides of the cooling water pump. Cooperating with the water outlet of the cooling water pump to align with the connecting pipe I 302, insert the connecting pipe I 302 into the water outlet pipe of the cooling water pump, and then press the water outlet tightly on the rubber table 301. The two fixing rings 303 approach and closely adhere to the water outlet pipe of the cooling water pump to clamp the cooling water pump. Through the above cooperation, the device can not only seal the water outlet of the cooling water pump and clamp and fix the water pump from three sides of the cooling water pump, but also combine the driving of the motor II 609 to drive the rotating shaft to drive the gear 610 to rotate. The rotating gear 610 meshes with the toothed plate 608, and then drives the lifting frame 607 to move up and down, thereby increasing the contact area between the fixing component 6 and the cooling water pump, making the device more stable for the cooling water pump. Therefore, during the pressure detection, the cooling water pump will not shake back and forth, greatly improving the accuracy of the detection result.

[0058] In the present invention, the hydraulic cylinder II 702 controls the expansion and contraction of the hydraulic shaft II 703. Combining with the sliding of the slider III 706 along the slide rail III 705, it drives the mounting block 704 to move up and down smoothly. The ascending and descending mounting block 704 drives the connecting joint 711 to move up and down through the rotating plate 707, the flipping plate 708, the folding plate I 709 and the folding plate II 710. Combining with the rotation of the rotating plate 707, it drives the connecting joint 711 to rotate through the flipping plate 708, the folding plate I 709 and the folding plate II 710, so that the connecting joint 711 moves on the side and above the cooling water pump. Then, cooperating with the rotation of the flipping plate 708 to drive the connecting joint 711 to move left and right through the folding plate I 709 and the folding plate II 710, and combining with the rotation of the folding plate I 709 to drive the connecting joint 711 to rotate through the folding plate II 710, and the motor VII 716 drives the rotating shaft to drive the connecting joint 711 to rotate through the folding plate II 710, further accurately positioning the connecting joint 711 to align with the water inlet of the cooling water pump. After the device can fix the cooling water pump, the connecting joint 711 can move flexibly to adapt to the water inlets of different models and positions of the cooling water pump, making the device highly flexible during use and having a high matching degree with different models of cooling water pumps. Therefore, leakage detection can be performed on a variety of cooling water pumps.

[0059] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of protection required by the present invention. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A leakage detection device for a cooling water pump, comprising a detection frame (1), a pressure setting component (2), a sealing component (3) and a pressurizing component (7), characterized in that: The pressure setting component (2), the sealing component (3) and the pressurizing component (7) are all installed inside the detection frame (1). The sealing component (3) includes a rubber table (301), a first connecting pipe (302) and two fixing rings (303). The first connecting pipe (302) penetrates through the rubber table (301) and is fixedly connected to the rubber table (301). The two fixing rings (303) move on both sides of the first connecting pipe (302). Among them, the pressurizing component (7) includes a bottom frame (701) and a connecting fitting (711). The connecting fitting (711) moves on one side of the bottom frame (701). The connecting fitting (711) includes a second connecting pipe (7111), a plurality of clamping plates (7112) and a sealing ring (7113). The plurality of clamping plates (7112) are arranged equidistantly around the second connecting pipe (7111). The sealing ring (7113) is sleeved outside the second connecting pipe (7111). The sealing ring (7113) is located inside the plurality of clamping plates (7112). One end of the second connecting pipe (7111) is provided with a mounting ring (7114). One end of the sealing ring (7113) is connected to one end of the mounting ring (7114). The other end of the sealing ring (7113) is fixedly connected to the plurality of clamping plates (7112).

2. The leakage detection device for a cooling water pump according to claim 1, characterized in that: A water discharge tank (4) is installed at the bottom of the detection frame (1). One end of the water discharge tank (4) is connected to a water discharge pipe (5). An electric valve (712) is installed at one end of the water discharge pipe (5) close to the water discharge tank (4). One end of the water discharge pipe (5) away from the water discharge tank (4) is connected to a mounting pipe (502). A pressure gauge (501) is installed in the middle of the mounting pipe (502). One end of the mounting pipe (502) away from the water discharge pipe (5) is connected to the first connecting pipe (302). A water inlet tank (8) is installed at the top of the detection frame (1). A transfer pipe (9) is connected between the water inlet tank (8) and the second connecting pipe (7111). An electric valve (712) is installed between the transfer pipe (9) and the second connecting pipe (7111).

3. The leakage detection device for a cooling water pump according to claim 1, wherein: The pressure setting component (2) includes an operating table (201), a handle (202) and two first sliding rails (203). The operating table (201) is located above the two first sliding rails (203). The handle (202) is installed at one end of the operating table (201). The rubber table (301) is installed in the middle of the operating table (201). The two first sliding rails (203) are installed on the detection frame (1). Limit blocks (204) are fixed at both ends of the two first sliding rails (203). Sliders (205) are installed on both sides below the operating table (201). The cross-sections of the two first sliding rails (203) are both in an "I" shape structure. The sliders (205) are adapted to the first sliding rails (203), and the sliders (205) slide along the first sliding rails (203).

4. The leakage detection device for a cooling water pump according to claim 1, characterized in that: Connectors (304) are installed at both ends of the two fixed rings (303). One side of the rubber platform (301) is equipped with a first motor (305). The first motor (305) is connected to a bidirectional lead screw (306) through a rotating shaft. The two ends of the bidirectional lead screw (306) respectively penetrate through the two connectors (304) at one end of the two fixed rings (303). Screw holes are installed at the bottoms of the two connectors (304) close to the bidirectional lead screw (306). The two screw holes are respectively in threaded cooperation with the two ends of the bidirectional lead screw (306). The other side of the rubber platform (301) is equipped with a sliding rod (307). The sliding rod (307) penetrates through the two connectors (304) at the other end of the two fixed rings (303).

5. The leakage detection device for a cooling water pump according to claim 1, characterized in that: Fixing components (6) are provided on both sides of the pressing component (2). The fixing component (6) includes a fixing frame (601), a clamping frame (605) and a lifting frame (607). The clamping frame (605) moves left and right on one side of the fixing frame (601). The lifting frame (607) moves up and down inside the clamping frame (605). The fixing frame (601) is fixed on the detection frame (1). A first hydraulic cylinder (603) is installed at the top of one side of the fixing frame (601). One end of the first hydraulic cylinder (603) penetrates through a first hydraulic shaft (604). The first hydraulic shaft (604) is connected to the clamping frame (605). A second slide rail (602) is installed at the bottom of the fixing frame (601) close to one side of the clamping frame (605). A second slider (606) is installed at the bottom of the clamping frame (605). The cross section of the second slide rail (602) is in an "I" shape structure. The second slider (606) is adapted to the second slide rail (602). The second slider (606) slides along the second slide rail (602).

6. The leakage detection device for a cooling water pump according to claim 5, wherein: A notch is opened at one end of the clamping frame (605). A second motor (609) is installed on one side of the clamping frame (605). The second motor (609) is connected to a gear (610) through a rotating shaft. The cross section of the lifting frame (607) is in a horizontally placed "U" shape structure. A toothed plate (608) is installed inside the lifting frame (607). The toothed plate (608) is engaged with the gear (610).

7. The leakage detection device for a cooling water pump according to claim 1, characterized in that: A number of first bottom blocks (7115) are installed at equal intervals at one end of the mounting ring (7114). The clamping plate (7112) is arranged in an arc shape. A second bottom block (7116) is installed on the inner side wall of the middle part of the clamping plate (7112). A connecting plate (7117) is hinged between the first bottom block (7115) and the second bottom block (7116). A third motor (7118) for driving the connecting plate (7117) to rotate is installed at one end of the connecting plate (7117) close to the first bottom block (7115).

8. The leakage detection device for a cooling water pump according to claim 1, characterized in that: The chassis (701) is installed on the detection frame (1). The chassis (701) has an inverted "L" - shaped structure. Inside the chassis (701), a second hydraulic cylinder (702) is installed. One end of the second hydraulic cylinder (702) penetrates through a second hydraulic shaft (703). At the bottom of the second hydraulic shaft (703), a mounting block (704) is installed. On one side inner wall of the chassis (701), a third slide rail (705) is installed. On the side of the fourth mounting block (704) close to the third slide rail (705), a third slider (706) is installed. The cross - section of the third slide rail (705) has an "I" - shaped structure, and the third slider (706) slides along the third slide rail (705).

9. The leakage detection device for a cooling water pump according to claim 8, wherein: On the side of the mounting block (704) away from the third slider (706), a fourth motor (713) is installed. The fourth motor (713) is connected to a rotating plate (707) through a rotating shaft. At the top of the end of the rotating plate (707) away from the fourth motor (713), a fifth motor (714) is installed. The fifth motor (714) is connected to a flipping plate (708) through a rotating shaft. At the bottom of the end of the flipping plate (708) away from the fifth motor (714), a sixth motor (715) is installed. The sixth motor (715) is connected to a first folding plate (709) through a rotating shaft. At the end of the first folding plate (709) away from the sixth motor (715), a seventh motor (716) is installed. The seventh motor (716) is connected to a second folding plate (710) through a rotating shaft. One end of the second connecting pipe (7111) away from the clamping plate (7112) penetrates through the bottom of the second folding plate (710), and the second connecting pipe (7111) is fixedly connected to the second folding plate (710).

10. A leak detection device for a cooling water pump according to any one of claims 1-9, characterized in that: The usage method of this leakage detection device specifically includes the following steps: Step 1: The operator pulls the handle (202), and the first slider (205) slides along the first slide rail (203), thereby controlling the position of the operating table (201) to bring the operating table (201) closer to the operator. The operator picks up the cooling water pump, aligns the water outlet of the cooling water pump with the first connecting pipe (302), inserts the first connecting pipe (302) into the water outlet pipe of the cooling water pump, and then presses the water outlet tightly on the rubber table (301). The first motor (305) drives the rotating shaft to drive the bidirectional lead screw (306) to rotate. The two ends of the rotating bidirectional lead screw (306) are respectively in threaded cooperation with the screw holes installed at the bottoms of the two connecting brackets (304) close to the bidirectional lead screw (306). Considering that the two connecting brackets (304) far from the bidirectional lead screw (306) slide along the slide rod (307), thereby driving the two fixing rings (303) to approach or move away from each other. The two fixing rings (303) approach each other and closely adhere to the water outlet pipe of the cooling water pump, sealing the water outlet and clamping the cooling water pump. The operator holds the cooling water pump with one hand and pushes the handle with the other hand, and places the cooling water pump between the two fixing components (6). The two first hydraulic cylinders (603) respectively drive the first hydraulic shafts (604) to expand and contract, thereby respectively driving the clamping brackets (605) to move left and right, so that the two clamping brackets (605) approach or move away from each other, clamping both sides of the cooling water pump. Cooperating with the second motor (609) driving the rotating shaft to drive the gear (610) to rotate, the rotating gear (610) meshes with the toothed plate (608), thereby driving the lifting frame (607) to move up and down, increasing the contact area between the fixing component (6) and the cooling water pump, and fixing both sides of the cooling water pump; Step 2: The hydraulic cylinder 2 (702) controls the telescopic movement of the hydraulic shaft 2 (703). In combination with the sliding of the slider 3 (706) along the slide rail 3 (705), it drives the stable lifting of the mounting block (704). The lifting mounting block (704) drives the connecting fitting (711) to lift through the rotating plate (707), the flipping plate (708), the folding plate 1 (709) and the folding plate 2 (710). In combination with the rotation of the rotating plate (707), it drives the connecting fitting (711) to rotate through the flipping plate (708), the folding plate 1 (709) and the folding plate 2 (710), enabling the connecting fitting (711) to move on the side and above the cooling water pump. Then, in cooperation with the rotation of the flipping plate (708), it drives the connecting fitting (711) to move left and right through the folding plate 1 (709) and the folding plate 2 (710). In combination with the rotation of the folding plate 1 (709), it drives the connecting fitting (711) to rotate through the folding plate 2 (710). The motor 7 (716) drives the rotating shaft to drive the connecting fitting (711) to rotate through the folding plate 2 (710), aligning the connecting fitting (711) with the water inlet of the cooling water pump. The motor 3 (7118) drives the connecting plate (7117) to drive the clamping plate (7112) to move back and forth, thereby driving a number of clamping plates (7112) to approach or move away from each other. The connecting pipe 2 (7111) is inserted into the water inlet pipe of the cooling water pump, and the water inlet of the cooling water pump is tightly pressed against the mounting ring (7114). In combination with a number of clamping plates (7112) driving one end of the sealing ring (7113) to move, a number of clamping plates (7112) are tightly attached to the water inlet pipe of the cooling water pump, causing one end of the sealing ring (7113) to move along with the clamping plate (7112). The inner side wall of the end of the sealing ring (7113) close to the mounting ring (7114) is tightly attached to the water inlet of the cooling water pump, and the end of the sealing ring (7113) close to the clamping plate (7112) is tightly attached to the water inlet pipe of the cooling water pump, sealing the water inlet of the cooling water pump; Step 3: Open the two electric valves (712). One of the pump bodies pumps water from the water inlet tank (8) through the transfer pipe (9) into the connecting pipe 2 (7111), and gradually fills the cooling water pump with pressurized water. The air in the cooling water pump is released through the electric valve (712) on the drain pipe (5). After the pressurized water fills the cooling water pump, close the electric valve (712) on the drain pipe (5), and continue to pressurize to the specified pressure value to vent and pressurize the cooling water pump. Close the electric valve (712) installed on the transfer pipe (9). The operator visually observes the pressure gauge at regular intervals to observe the pressure change inside the tested water pump and records the pressure change data. The leakage of the cooling water pump is judged by comparing the pressure value data. After the test is completed, the water in the cooling water pump after the test enters the drain tank (4) through the drain pipe (5). The pump body installed between the drain tank (4) and the circulation pipe (10) pumps the water in the drain tank (4) out and then fills the water inlet tank (8) through the circulation pipe (10) for reuse in the next leakage detection.

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