An automated testing device and test method for a micro-light vertical pump

Abstract

The present application relates to centrifugal pump performance testing technical field, disclose a kind of automatic testing device and test method for micro light vertical pump.The device of the present application includes left upper lifting docking mechanism, left lower lifting docking mechanism being slidably arranged in left lifting frame, and right lifting docking mechanism being slidably arranged in right lifting frame, each lifting docking mechanism includes hollow hydraulic cylinder and pressure tube.A left fixed docking mechanism is provided below the left lifting frame, a right fixed docking mechanism is provided below the right lifting frame, and a pump installation lifting platform and a cable hoist are provided between the frames.The present application also provides a test method for executing three different pipeline docking modes according to different pump models, which significantly improves the flexibility and efficiency of micro light vertical pump docking, to easily adapt to various complex configurations of the pump to be tested, such as different axial lengths, 180° arrangement of inlet and outlet, same side high arrangement or two side high arrangement, and realizes "one machine multi-use".

Description

Technical Field

[0001] This invention belongs to the field of centrifugal pump performance testing technology, specifically relating to an automated testing device and testing method for a micro-lightweight vertical pump. Background Technology

[0002] Miniature and lightweight vertical pumps are widely used in various industrial and municipal fields, such as water supply, power, petrochemical, and fire protection systems. To ensure the performance and reliability of vertical pumps under different operating conditions, factory testing, maintenance, and periodic testing are crucial. Traditional vertical pump testing methods often rely on manual operation, resulting in low testing efficiency and susceptibility to human factors. Dedicated testing devices, however, improve accuracy and efficiency through automation technology, reducing human error. Existing authorized patent CN 112412831 B, "An Integrated Automated Test Stand for Vertical Pumps and Its Testing Method," includes three hydraulic cylinder vertical frames with water flow at a 90° angle, a pressure equalization chamber rotary table, and a three-way lift. The pump under test is mounted on the power roller line of the three-way lift, and the pump body position is adjusted via the lift. The rotary table holds pressure equalization chambers of different diameters to accommodate pump flanges, enabling automated testing of pumps with horizontal inlet / outlet and 90° angle rotation. However, existing technologies have the following problems when applied to testing micro-lightweight vertical pumps: the fixed frame is only suitable for vertical pumps with inlet and outlet flanges on the same horizontal plane; the axial adaptation flexibility is insufficient, and the fixed frame means that for pump types with different axial lengths (horizontal distance between inlet and outlet flanges), compensation relies solely on the cylinder stroke. Excessive cylinder extension can easily lead to uneven sealing pressure distribution, ultimately causing leakage of the test medium; furthermore, clamp-type and back-mounted clamping methods are difficult to adapt to complex pump types with height differences between inlet and outlet flanges. Therefore, improvements to existing technologies are needed. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an automated testing device and testing method for micro and lightweight vertical pumps, so as to overcome the defects of existing vertical pump testing devices that are difficult to adapt to different axial lengths and different inlet and outlet heights due to fixed mechanism layout, thereby realizing efficient testing of micro and lightweight vertical pumps of various specifications.

[0004] To solve the above-mentioned technical problems, the present invention provides an automated testing device for a micro-lightweight vertical pump, including a base, a main frame horizontally arranged on the base and fixedly connected to the base, and also including multiple lifting docking mechanisms, a left lifting frame and a right lifting frame;

[0005] The lifting docking mechanism includes an upper left lifting docking mechanism, a lower left lifting docking mechanism, and a right lifting docking mechanism. The upper left and lower left lifting docking mechanisms are located on the left lifting frame and are slidably connected to the left lifting frame. The right lifting docking mechanism is located on the right lifting frame and is slidably connected to the right lifting frame. Each lifting docking mechanism includes a hollow hydraulic cylinder I with a hollow piston rod I. The head end of the hollow piston rod I is sequentially connected to a pressure measuring sleeve I and a pressure measuring tube I.

[0006] A left fixed docking mechanism is provided below the left lifting frame. The left fixed docking mechanism includes a hollow hydraulic cylinder II with a hollow piston rod II. The head end of the hollow piston rod II is connected in sequence to a pressure measuring sleeve II and a pressure measuring tube II. A right fixed docking mechanism is provided below the right lifting frame. The right fixed docking mechanism includes a pressure measuring tube III and a flange-type adapter sleeve. A pump installation lifting platform and a cable lift are installed between the left and right lifting frames.

[0007] An improvement to the automated testing device for a miniature, lightweight vertical pump according to the present invention:

[0008] Electric linear module one is fixedly installed on the left lifting frame, and electric linear module two is fixedly installed on the right lifting frame. Electric linear module one includes two cylinder mounting slides, and electric linear module two includes one cylinder mounting slide. The hollow hydraulic cylinder I of each lifting docking mechanism is fixedly connected to one cylinder mounting slide. Electric linear module one and electric linear module two are both connected to the control unit via signal.

[0009] The hollow hydraulic cylinder II and the flange-type adapter sleeve are both fixedly connected to the main frame; the pump installation lifting platform is located in front of the main frame, and the cable lift is located behind the main frame; the pump installation lifting platform includes a vertical lifting mechanism, an electric linear module four, and a roller conveyor mechanism connected sequentially from bottom to top; a control unit is provided on the left lifting frame, and an NFC sensor is provided on the pump installation lifting platform. The NFC sensor, each hollow hydraulic cylinder I, hollow hydraulic cylinder II, vertical lifting mechanism, electric linear module four, and cable lift are all signal-connected to the control unit; the left lifting frame is fixedly connected to the main frame, and the right lifting frame is slidably connected to the main frame.

[0010] As a further improvement to the automated testing device for a miniature vertical pump of the present invention:

[0011] Each lifting docking mechanism also includes a U-shaped flange fixing rod and a flange compensation plate. One end of the flange fixing rod is rotatably connected to the cylinder mounting slide, and the other end is plugged into the flange compensation plate. Pressure measuring tube I and pressure measuring tube sleeve I are located inside the U-shaped structure of the flange fixing rod.

[0012] One side of the pressure testing sleeve I is threaded to the hollow piston rod I, and the other side is plugged into the pressure testing tube I; one side of the pressure testing sleeve II is threaded to the hollow piston rod II, and the other side is plugged into the pressure testing tube II; both the end face of the pressure testing sleeve I connected to the hollow piston rod I and the end face of the pressure testing sleeve II connected to the hollow piston rod II are provided with trapezoidal O-ring mounting grooves and fitted with O-ring seals;

[0013] The pressure measuring tube I, pressure measuring tube II and pressure measuring tube III are all tubular components. A radial limiting flange is provided on the tube body near the tail end, and a radial flange is provided at the head end as a tube sealing surface. An O-ring mounting groove with a trapezoidal cross section is provided on the tube sealing surface and an O-ring is installed.

[0014] The flange-type adapter sleeve and the pressure testing tube Ⅲ are connected by a plug-in type.

[0015] As a further improvement to the automated testing device for a miniature vertical pump of the present invention:

[0016] The vertical lifting mechanism includes a scissor-type bracket and a servo motor five that drives the scissor-type bracket to open and close, and a lead screw lifting mechanism; an electric linear module four is fixedly installed on the top of the vertical lifting mechanism, including a movable slide; a roller line mechanism is fixedly connected to the movable slide of the electric linear module four, including a roller group arranged in an array along the Y-axis.

[0017] As a further improvement to the automated testing device for a miniature vertical pump of the present invention:

[0018] The cable lift includes a forward support rod, an electric linear module three, and two flexible cables. The flexible cables are located in the forward support rod, and the forward support rod is fixedly connected to the slider of the electric linear module three.

[0019] This invention also provides a test method (pump testing method) using the aforementioned automated testing device for a miniature vertical pump:

[0020] The vertical pump under test, located on the fixture plate, is transported to the pump mounting lifting platform. The pump mounting lifting platform reads the pump model information from the NFC chip on the fixture plate, and then performs one of the following docking modes according to the pump model:

[0021] Mode 1: For a standard vertical pump with 180° inlet and outlet flanges, the left fixed docking mechanism is connected to the inlet flange of the vertical pump under test, and the right fixed docking mechanism is connected to the outlet flange of the vertical pump under test.

[0022] Mode 2: For vertical pumps under test where the inlet and outlet flanges are on the same side but at different heights, the lower left lifting docking mechanism connects the pipeline to the inlet flange of the vertical pump under test, and the upper left lifting docking mechanism connects the pipeline to the outlet flange of the vertical pump under test.

[0023] Mode 3: For vertical pumps under test with inlet and outlet flanges at different heights on both sides, the lower left lifting docking mechanism connects the pipeline to the inlet flange of the vertical pump under test, and the right lifting docking mechanism connects the pipeline to the outlet flange of the vertical pump under test.

[0024] After the docking is completed, a pump performance test will be performed.

[0025] As an improvement to the pump testing method of the present invention:

[0026] The specific process for connecting the left fixed docking mechanism to the inlet flange of the vertical pump under test and the right fixed docking mechanism to the outlet flange of the vertical pump under test in Mode 1 is as follows:

[0027] The vertical lifting mechanism adjusts the vertical pump under test to the preset Z-axis position, and the electric linear module four adjusts the vertical pump under test to the preset Y-axis position.

[0028] Hollow piston rod II drives pressure testing sleeve II and pressure testing tube II to move to the right together, so that pressure testing tube II fits against the inlet flange of the vertical pump under test, and pushes the vertical pump under test to move to the right on the roller conveyor mechanism until the outlet flange of the vertical pump under test fits against and is pressed tightly against pressure testing tube III. The test pipeline inlet, hollow piston rod II, pressure testing tube II, vertical pump under test, pressure testing tube III and test pipeline outlet are connected in sequence to form the test medium passage; throughout the entire test process, hollow hydraulic cylinder II remains in working state.

[0029] As a further improvement to the pump testing method of the present invention:

[0030] The specific process for connecting the pipeline between the lower left lifting docking mechanism and the inlet flange of the vertical pump under test, and between the upper left lifting docking mechanism and the outlet flange of the vertical pump under test in Mode 2, is as follows:

[0031] (1) The vertical lifting mechanism adjusts the vertical pump under test to the preset Z-axis position; the upper left lifting docking mechanism and the lower left lifting docking mechanism are adjusted to the preset height respectively, and then the electric linear module four adjusts the vertical pump under test to the preset Y-axis position, so that the outlet flange of the vertical pump under test is inside the flange fixing rod one and the inlet flange is inside the flange fixing rod two.

[0032] (2) The hollow piston rod I of the hollow hydraulic cylinder one extends to the right until the pressure measuring tube one is attached to and pressed against the outlet flange of the vertical pump under test; the hollow piston rod I of the hollow hydraulic cylinder two extends to the right until the pressure measuring tube two is attached to and pressed against the inlet flange of the vertical pump under test; the test pipeline inlet, the hollow piston rod I of the hollow hydraulic cylinder two, the pressure measuring tube two, the vertical pump under test, the pressure measuring tube one, the hollow piston rod I of the hollow hydraulic cylinder one, and the test pipeline outlet are connected in sequence to form the test medium passage; throughout the test process, the hollow hydraulic cylinder one and the hollow hydraulic cylinder two remain in working condition.

[0033] As a further improvement to the pump testing method of the present invention:

[0034] The specific process for connecting the pipeline between the lower left lifting docking mechanism and the inlet flange of the vertical pump under test, and between the right lifting docking mechanism and the outlet flange of the vertical pump under test in Mode 3, is as follows:

[0035] (1) The right lifting frame moves along the X-axis to the preset position and then locks it; the vertical lifting mechanism adjusts the vertical pump to be tested to the preset Z-axis position; the left lower lifting docking mechanism and the right lifting docking mechanism are adjusted to the preset height respectively, and then the electric linear module four adjusts the vertical pump to be tested to the preset position in the Y-axis, so that the outlet flange of the vertical pump to be tested is in the flange fixing rod three and the inlet flange is in the flange fixing rod two.

[0036] (2) The hollow piston rod I of the hollow hydraulic cylinder three extends to the left until the pressure measuring tube three is attached to and pressed against the outlet flange of the vertical pump under test. The hollow piston rod I of the hollow hydraulic cylinder two extends to the right until the pressure measuring tube two is attached to and pressed against the inlet flange of the vertical pump under test. The test pipeline inlet, the hollow piston rod I of the hollow hydraulic cylinder two, the pressure measuring tube two, the vertical pump under test, the pressure measuring tube three, the hollow piston rod I of the hollow hydraulic cylinder three, and the test pipeline outlet are connected in sequence to form the test medium passage. Throughout the test, the hollow hydraulic cylinder three and the hollow hydraulic cylinder two remain in working condition.

[0037] As a further improvement to the pump testing method of the present invention:

[0038] The pump testing process is as follows: the cable lift adjusts the end of the cable to a position matching the height of the vertical pump under test and connects it electrically to the pump. Then, the test medium is introduced into the test medium passage to perform the hydraulic performance test of the vertical pump under test. After the test is completed, the residual test medium is discharged. Hollow piston rod I and hollow piston rod II are both returned to the zero position, and the pump installation lifting platform, cable lift, upper left lifting docking mechanism, lower left lifting docking mechanism, and right lifting docking mechanism all return to their original positions.

[0039] The beneficial effects of this invention are mainly reflected in:

[0040] 1. Significantly improved the flexibility and adaptability of the mechanism and the testing range.

[0041] This invention overcomes the limitations of traditional fixed-layout devices by incorporating independently adjustable left and right lifting frames, along with the horizontal sliding adjustment function of the right lifting frame. This multi-degree-of-freedom adjustment system can precisely adapt to various complex configurations of the pump under test, such as different axial lengths, 180° inlet / outlet arrangements, and varying heights on the same or both sides, achieving "one machine for multiple uses" and expanding compatibility with non-standard, lightweight vertical pumps.

[0042] 2. By integrating an NFC sensor into the pump mounting platform, the device can automatically read the model information of the pump under test and instruct the servo system to automatically select and adjust the fixed or lifting docking mechanism, eliminating the error of manual adjustment, significantly improving the efficiency of production changeover docking, and ensuring the consistency and accuracy of the test position.

[0043] 3. The cable lift and two flexible cables configured in this device can select the power supply circuit according to the power of the pump under test, adapting to different models of vertical pumps under test, while ensuring the safety of high-power testing.

[0044] 4. Compared with traditional clamping structures and back-top clamping structures, the openable flange fixing rod structure adopted in this invention facilitates the replacement of pressure testing tubes and can effectively match the clamping requirements of inlet and outlet flanges at different heights. At the same time, a pluggable flange compensation plate is added to the end of the flange fixing rod, which effectively ensures that small-diameter flanges can be fixed and clamped, making it more suitable for the rapid and frequent production change requirements of micro and light pumps.

[0045] 5. By employing a trapezoidal O-ring mounting groove design and utilizing continuous pressure compensation from a hollow hydraulic cylinder, the system maintains excellent sealing performance even under high pressure environments exceeding 4MPa. Simultaneously, the pump mounting lifting platform enables three-dimensional position adjustment of the vertical pump, achieving stable docking and support for vertical pumps with different inlet / outlet positions. Attached Figure Description

[0046] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0047] Figure 1 This is an overall schematic diagram of an automated testing device for a miniature and lightweight vertical pump according to the present invention.

[0048] Figure 2 This is a front view structural schematic diagram of an automated testing device for a miniature and lightweight vertical pump according to the present invention;

[0049] Figure 3 This is a schematic diagram illustrating the docking modes of three different types of vertical pumps according to the present invention.

[0050] Figure 4 This is a schematic diagram of the flange fixing rod and flange compensation plate of the present invention;

[0051] Figure 5 This is a cross-sectional view of the pressure measuring sleeve of the present invention;

[0052] Figure 6 This is a schematic diagram of the pressure measuring tube of the present invention;

[0053] Figure 7 This is a schematic diagram of the flange-type adapter sleeve of the present invention;

[0054] Figure 8 This is a schematic diagram of the hollow hydraulic cylinder of the present invention. Detailed Implementation

[0055] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto:

[0056] Example 1: An automated testing device for a miniature, lightweight vertical pump, such as... Figures 1-8 As shown, it includes a pair of symmetrically arranged bases 1, a main frame 2, a pump mounting lifting platform 3, a left lifting frame 4, a right lifting frame 5, a control unit 15, and a cable lift 16.

[0057] The main frame 2 is horizontally mounted on the base 1 and fixedly connected to the base 1. The left lifting frame 4 and the right lifting frame 5 are mounted face-to-face on the left and right sides of the top of the main frame 2, with the left lifting frame 4 fixedly connected to the main frame 2. The right lifting frame 5 is slidably mounted on the main frame 2 via a lead screw linear module and is slidably connected to the main frame 2. The lead screw linear module has a self-locking function, which drives the right lifting frame 5 to move along the X-axis (left-right direction) of the main frame 2 to a designated position and then locks it. It is suitable for vertical pumps under test with different axial lengths. In this embodiment, the lead screw linear module can be electrically controlled or manually operated. Between the left lifting frame 4 and the right lifting frame 5, a pump mounting lifting platform 3 is provided in front of the main frame 2, and a cable lift 16 is provided behind it. The pump mounting lifting platform 3 is used to place and fix the vertical pump under test.

[0058] The cable lift 16 is fixedly installed on the ground and includes a forward support rod 22, an electric linear module three, and a power supply assembly (the power supply assembly includes two flexible cables with different cross-sectional areas, 4 square millimeters and 16 square millimeters respectively). The flexible cable is used to electrically connect to the vertical pump under test and provide working power during testing. The flexible cable extends forward along the forward support rod 22, and its output end is used to electrically connect to the vertical pump under test to provide test power. The electric linear module three has a stroke of 10-1500mm and includes a slider three and a servo motor three. The slider three is fixedly connected to the forward support rod 22, and the servo motor three drives the slider three through a lead screw pair to drive the forward support rod 22 and the flexible cable to move up and down synchronously, so as to adapt to the height of different models of vertical pumps under test.

[0059] This invention includes three sets of lifting and docking mechanisms and one set of fixed docking mechanisms for matching vertical pumps under test with different inlet and outlet positions. An electric linear module and two sets of lifting and docking mechanisms (upper left lifting and docking mechanism and lower left lifting and docking mechanism) are installed on the left lifting frame 4. The two sets of lifting and docking mechanisms are arranged vertically in the same axial plane, and their vertical positions are adjusted by the electric linear module to match and connect with the height of the inlet and outlet flanges of the vertical pump under test. In one embodiment of this invention, the electric linear module includes a pair of linear guide rails, two sets of hydraulic cylinder mounting slides, a screw lifting mechanism, and a servo motor. The linear guide rails are arranged vertically and fixedly connected to the left lifting frame 4. A pair of vertically sliding hydraulic cylinder mounting slides are installed on the linear guide rails, and the hydraulic cylinder mounting slides are slidably connected to the linear guide rails. Each hydraulic cylinder mounting slide is equipped with a set of lifting and docking mechanisms. Each servo motor is connected to a hydraulic cylinder mounting slide via a lead screw lifting mechanism, thereby enabling the upper left and lower left lifting and docking mechanisms to lift and lower independently along the height direction of the left lifting frame 4. The control unit 15 controls the rotation of the servo motors, driving the upper and lower lifting and docking mechanisms to move to positions corresponding to the heights of the inlet and outlet flanges of the vertical pump under test.

[0060] An electric linear module two and another lifting docking mechanism (right lifting docking mechanism) are installed on the right lifting frame 5. The electric linear module two includes a pair of linear guide rails two, a set of servo motors two, a screw lifting mechanism, and a cylinder mounting slide. The linear guide rails two are arranged vertically and are fixedly connected to the right lifting frame 5. The cylinder mounting slide is slidably connected to the linear guide rails two. The right lifting docking mechanism is fixedly installed on the cylinder mounting slide for connecting to the outlet flange of the vertical pump under test. The servo motors two are driven by the screw lifting mechanism and the cylinder mounting slide is driven by the control unit 15 to control the rotation of the servo motors two, so that the right lifting docking mechanism can be adjusted in the height direction of the right lifting frame 5.

[0061] The two sets of lifting docking mechanisms on the left lifting frame 4 (upper left lifting docking mechanism and lower left lifting docking mechanism) and the one set of lifting docking mechanisms on the right lifting frame 5 (right lifting docking mechanism) contain the same components and are arranged in a mirror image. Both include a hollow hydraulic cylinder I6, a pressure measuring tube I12, a pressure measuring tube sleeve I13, a U-shaped flange fixing rod 17, and a flange compensation plate 8. For the upper left and lower left lifting docking mechanisms, the hollow hydraulic cylinder I6, pressure measuring tube sleeve I13, and pressure measuring tube I12 are connected sequentially from left to right. For the right lifting docking mechanism, these components are connected sequentially from right to left. For all three sets of lifting docking mechanisms, the flange compensation plate 8 is installed at the head end of the flange fixing rod 17 (the end furthest from the left lifting frame 4 or the right lifting frame 5), and the tail end of the flange fixing rod 17 is rotatably connected to the cylinder mounting slide.

[0062] Hollow hydraulic cylinder I6 Figure 8 As shown, the device includes a cylinder 61 and a hollow piston rod I disposed within the cylinder 61 and capable of axial reciprocating motion. The hollow piston rod I has a through hole along the axial direction, and its head end (the end located outside the cylinder 61) has an external thread 62 for threaded connection with the pressure measuring sleeve I13. A cylinder flange 63 is provided on one side of the cylinder 61 (the side away from the head end of the hollow piston rod I) for connecting the inner cavity of the cylinder 61 with an external pipeline. The cylinder flange 63 of the lower left lifting docking mechanism is connected to the inlet 20 of the test pipeline, and the cylinder flanges 63 of the upper left and right lifting docking mechanisms are connected to the outlet 21 of the test pipeline. The cylinder flange 63, the inner cavity of the cylinder 61, the through hole of the hollow piston rod I, the pressure measuring sleeve I12, and the inlet and outlet of the vertical pump under test are interconnected to form a passage for the test medium.

[0063] The pressure testing tube I12 and pressure testing sleeve I13 are plug-in connected and are integrally housed within the U-shaped groove of the flange fixing rod 17. Pressure testing sleeve I13 is as follows... Figure 5 As shown, it is cylindrical. The inner cavity of the cylinder is divided into two parts: a piston rod cavity 131 and a pressure measuring tube cavity 132. The inner wall of the piston rod cavity 131 is provided with internal threads for threaded connection with the hollow piston rod I of the hollow hydraulic cylinder I6. The pressure measuring tube cavity 132 has a smooth inner wall for inserting the pressure measuring tube I12. The end face of the pressure measuring tube sleeve I13 located on one side of the piston rod cavity 131 is provided with an O-ring mounting groove with a trapezoidal cross section. After installing the O-ring, a seal is achieved between the hollow piston rod I and the pressure measuring tube sleeve I13.

[0064] Pressure testing tube I12 Figure 6As shown, the pressure measuring tube I12 is a tubular component, with its tail end inserted into the pressure measuring tube cavity 132. Near the tail end of the pressure measuring tube I12, a radially oriented limiting flange 122 is provided on the tube body. In the assembled state, the limiting flange 122 and the end face of the pressure measuring tube sleeve I13 form an axial limit, preventing the pressure measuring tube I12 from over-extending. The head end of the pressure measuring tube I12 also has a radially oriented flange, which serves as a pipe sealing surface 121 for connection to the inlet and outlet flanges of the vertical pump under test. The pipe sealing surface 121 has a trapezoidal O-ring mounting groove, achieving a sealing capacity of over 4 MPa after installing the O-ring. A pressure measuring hole 123 with a tapered threaded hole is provided in the middle of the tube body of the pressure measuring tube I12 for connecting the pressure measuring hose and the pressure sensor.

[0065] Hollow hydraulic cylinder I6 and flange fixing rod 17 are respectively located on the left and right sides of the cylinder mounting slide: For the left lifting docking mechanism, hollow hydraulic cylinder I6 is located on the left side of the cylinder mounting slide of electric linear module one, and flange fixing rod 17 is located on the right side of the cylinder mounting slide. For the right lifting docking mechanism, hollow hydraulic cylinder I6 is located on the right side of the cylinder mounting slide of electric linear module two, and flange fixing rod 17 is located on the left side of the cylinder mounting slide. Each cylinder mounting slide has a through hole in its center. The hollow piston rod I passes through the through hole and is threaded into the pressure measuring sleeve I13. Hollow hydraulic cylinder I6 is fixedly connected to the cylinder mounting slide and moves up and down together with the cylinder mounting slide. The flange fixing rod 17 has an overall U-shaped cantilever structure, such as... Figure 4 As shown, the end facing the cylinder mounting slide is the mounting end. One side of the mounting end is rotatably connected to the cylinder mounting slide via a fixed rotating shaft, allowing the flange fixing rod 17 to move up and down with the cylinder mounting slide. It can also open backward in the horizontal plane around the fixed rotating shaft. The other side of the mounting end has a locking pin hole for inserting a removable pin. During pump testing, the flange fixing rod 17 is in the closed state, and the removable pin is inserted into the locking pin hole and the corresponding mating hole on the cylinder mounting slide, rigidly locking the flange fixing rod 17 to the cylinder mounting slide. When it is necessary to replace the pressure testing tube I12 and pressure testing tube sleeve I13 to adapt to different pump types, the removable pin is pulled out, and the flange fixing rod 17 can rotate backward around the fixed rotating shaft to open. The flange fixing rods 17 of the upper left and lower left lifting docking mechanisms and the right lifting docking mechanism face each other, used for connection and positioning with the inlet and outlet flanges of the vertical pump under test, respectively.

[0066] The flange compensation plate 8 and the flange fixing rod 17 are connected by a plug-in type. In one implementation of the present invention, the flange fixing rod 17 has a groove at its end, and the flange compensation plate 8 is a U-shaped metal pad with a groove on its outer periphery, which matches the groove at the end of the flange fixing rod 17 for insertion into the flange fixing rod 17. After insertion, the U-shaped openings of both the flange compensation plate 8 and the flange fixing rod 17 face forward. During testing, the inlet and outlet flanges of the vertical pump under test are located between the pressure testing tube I12 and the flange compensation plate 8. The pressure testing tube sleeve I13 moves laterally under the action of the hollow hydraulic cylinder I6, pressing the pipe sealing surface 121 at the head of the pressure testing tube I12 against the inlet and outlet flanges of the vertical pump under test. This results in the axial clamping of the inlet and outlet flanges of the vertical pump under test by the pressure testing tube I12 and the flange compensation plate 8 to achieve a sealed connection. By replacing the pressure testing tube I12 with different diameter specifications and the flange compensation plate 8 with different thicknesses or U-shaped opening inner diameters, the system can adapt to flanges of different diameters of the vertical pump under test, enabling the same lifting and docking mechanism to be compatible with pump flanges of different nominal diameters (DN) and pressure ratings.

[0067] A left fixed docking mechanism and a right fixed docking mechanism are installed on the front side of the main frame 2. The left fixed docking mechanism is located below the left lifting frame 4, and the right fixed docking mechanism is located below the right lifting frame 5, and they are coaxially arranged in the left-right direction. The left fixed docking mechanism includes a hollow hydraulic cylinder II 9, a pressure measuring tube II 124, and a pressure measuring tube sleeve II 134. The hollow hydraulic cylinder II 9 is fixedly connected to the main frame 2, and the pressure measuring tube II 124 and the pressure measuring tube sleeve II 134 are plug-in connected. The right fixed docking mechanism includes a flange-type adapter sleeve 135 and a pressure measuring tube III 125. The pressure measuring tubes II 124 and III 125 have the same shape and structure as the pressure measuring tube I 12 (in this embodiment, they are labeled to distinguish the installation position), and all include a limiting flange 122 and a tube sealing surface 121; the pressure measuring tube sleeves II 134 and I 13 have the same shape and structure (in this embodiment, they are labeled to distinguish the installation position), and include a piston rod cavity 131 and a pressure measuring tube cavity 132. The structure of the pressure measuring tubes II 124, III 125 and II 134 will not be described again here.

[0068] Flange type adapter sleeve 135 Figure 7As shown, the device is a stepped tubular body with a central axial through hole. From left to right, it includes a plug-in receiving part 1351, a fixed flange 1352, a connecting shaft part 1353, and an end flange 1354, all fixedly connected by welding. The inner diameter of the plug-in receiving part 1351 is slightly larger than the outer diameter of the tail end of the pressure testing tube III 125. The end face of the plug-in receiving part 1351 has a trapezoidal O-ring mounting groove for installing an O-ring seal. After the pressure testing tube III 125 is inserted into the plug-in receiving part 1351 of the flange-type adapter sleeve 135, the limiting flange 122 on the pressure testing tube III 125 tightly abuts against the plug-in receiving part 1351 to achieve a seal. The fixed flange 1352 and the end flange 1354 have multiple bolt holes. The fixed flange 1352 is used for fixed connection with the main frame 2, and the end flange 1354 is used for a sealed fixed connection with the flange of the test pipeline outlet 21.

[0069] Hollow hydraulic cylinder II9 has the same shape and structure as hollow hydraulic cylinder I6 (in this embodiment, it is labeled to distinguish the installation position). It includes a cylinder flange 63, a cylinder barrel 61, and a hollow piston rod II disposed within the cylinder barrel 61 and capable of axial reciprocating motion. The cylinder barrel 61 of hollow hydraulic cylinder II9 is ​​fixedly connected to the main frame 2. The cylinder flange 63 on hollow hydraulic cylinder II9 is ​​connected to the test pipeline inlet 20 for introducing the test medium and compressed air. The head of the hollow piston rod II is threadedly connected to the pressure testing sleeve II134 of the left fixed docking mechanism. During testing, under the action of hollow hydraulic cylinder II9, the pressure testing sleeve II134 moves to the right, causing pressure testing tubes II124 and III125 to be pressed tightly against the inlet and outlet flanges of the vertical pump under test, achieving a sealed connection. By replacing pressure testing tubes II124 and III125, it is possible to achieve adaptable connections with inlet and outlet flanges of vertical pumps of different specifications under test.

[0070] The main body of the pump installation lifting platform 3 is a frame structure, which provides three-dimensional spatial position adjustment for the vertical pump under test. It adopts a modular stacking structure and includes, from bottom to top: a vertical lifting mechanism for height adjustment in the Z-axis direction, an electric linear module for horizontal displacement adjustment in the Y-axis direction, and a roller line mechanism for moving the vertical pump under test in the X-axis direction.

[0071] The vertical lifting mechanism includes a scissor lift support frame, a servo motor, and a screw lift mechanism. The servo motor serves as the power source and is connected to the input end of the screw lift mechanism via a transmission pair. For example, in a preferred embodiment of the invention, the transmission pair is a gear transmission set, including a driving gear fixed to the output shaft of the servo motor and a driven gear meshing with the driving gear and fixed to the input end of the screw lift mechanism. The screw lift mechanism is connected to the top of the scissor lift support frame. The forward and reverse rotation of the servo motor drives the scissor lift support frame to open and close via the screw lift mechanism, thereby driving the upper electric linear module four and the roller conveyor mechanism to lift and lower in the Z-axis direction. The electric linear module four includes a linear guide rail four, a movable slide, and a servo motor four. The linear guide rail is fixedly mounted on the top of the scissor lift support frame and fixedly connected to the top of the scissor lift support frame. The servo motor four drives the movable slide to move along the Y-axis via a ball screw. The roller conveyor mechanism is fixedly mounted on the movable slide of the electric linear module four, serving as a work surface that directly contacts the pump body. It includes a conveyor frame and a roller assembly consisting of several rollers arranged in an array along the Y-axis. Each roller is mounted on the conveyor frame at both ends via a shaft and bearings, allowing free rotation. The conveyor frame has openings on both sides in the X-axis direction (left-right direction) to facilitate moving the vertical pump under test onto the roller assembly. The frames on both sides of the conveyor frame in the Y-axis direction (front-back direction) are used to mount the roller assembly and also serve as limits for the vertical pump under test. It should be noted that the method of limiting the vertical pump under test on the vertical lifting mechanism is common mechanical knowledge and not within the scope of this invention. For example, after reaching the test station, a limiting block can be inserted between the vertical pump under test and the conveyor frame. When the roller conveyor mechanism is in the outer position (away from the main frame 2), it is used to load the pump under test with tooling plates into the vertical pump production line in the factory; when the roller conveyor mechanism is in the inner position (close to the main frame 2), the test vertical pump can move along the X-axis direction (left and right) on the roller conveyor mechanism.

[0072] A control unit 15, including a PLC controller and an operation panel, is installed on the left lifting frame 4. An NFC sensor is installed on the pump mounting lifting platform 3. The NFC sensor is connected to the PLC controller and is used to read the model and parameter information of the pump under test stored in the NFC chip in the tooling board and send it to the PLC controller. The PLC controller obtains the preset X-axis, Y-axis and Z-axis position information of the vertical pump under test, as well as the preset Z-axis position information (preset height) of the three sets of lifting docking mechanisms, according to the model of the pump under test.

[0073] The servo motors contained in the control panel, the electric linear module one on the left lifting frame 4, the electric linear module two on the right lifting frame 5, the electric linear module three on the cable lift 16, the vertical lifting mechanism, and the electric linear module four are all connected to the PLC controller. The PLC controller controls the operating status of each servo motor based on the pump model and parameter information detected by the NFC sensor. Hollow hydraulic cylinders II9 and I6 are also connected to the PLC controller and are controlled to start and stop by the PLC controller. The PLC controller's control of the motors is existing technology, and those skilled in the art can implement it using conventional servo control algorithms based on the PLC controller, which will not be elaborated here.

[0074] The specific steps for using an automated testing device for a lightweight vertical pump are as follows:

[0075] To make the description clearer and more accurate, the hollow hydraulic cylinder I6, flange fixing rod 17, pressure measuring tube I12, and pressure measuring tube sleeve I13 included in the upper left lifting and docking mechanism are respectively referred to as Hollow Hydraulic Cylinder I, Flange Fixing Rod I, Pressure Measuring Tube I, and Pressure Measuring Tube Sleeve I; the hollow hydraulic cylinder I6, flange fixing rod 17, pressure measuring tube I12, and pressure measuring tube sleeve I13 included in the lower left lifting and docking mechanism are respectively referred to as Hollow Hydraulic Cylinder II, Flange Fixing Rod II, Pressure Measuring Tube II, and Pressure Measuring Tube Sleeve II; and the hollow hydraulic cylinder I6, flange fixing rod 17, pressure measuring tube I12, and pressure measuring tube sleeve I13 included in the right lifting and docking mechanism are respectively referred to as Hollow Hydraulic Cylinder III, Flange Fixing Rod III, Pressure Measuring Tube III, and Pressure Measuring Tube Sleeve III.

[0076] In the initial state, the roller conveyor mechanism of the pump mounting lifting platform 3 is in the outer position (away from the main frame 2). The hollow piston rods I of hollow hydraulic cylinder 1 and hollow hydraulic cylinder 2, and the hollow piston rod II of hollow hydraulic cylinder II 9 are all retracted to the zero position. The pump mounting lifting platform 3, cable lift 16, upper left lifting docking mechanism, lower left lifting docking mechanism, and right lifting docking mechanism are all at the original height position. Each pressure measuring sleeve I 13 is equipped with a pressure measuring tube I 12 of appropriate diameter, each pressure measuring sleeve II 134 is equipped with a pressure measuring tube II 124 of appropriate diameter, and each flange-type adapter sleeve 135 is equipped with a pressure measuring tube III 125 of appropriate diameter. The flange fixing rod 17 is locked and a flange compensation plate 8 of appropriate size is installed.

[0077] Then, the completed vertical pump to be tested is placed on a tooling plate and transported via the production line to the roller conveyor mechanism of the pump mounting lifting platform 3. The pump mounting lifting platform 3 reads the pump model information from the NFC chip on the tooling plate and sends it to the control unit 15. The vertical pumps to be tested include three types: ordinary vertical pumps with 180° inlet and outlet flanges, vertical pumps with inlet and outlet flanges on the same side but at different heights, and vertical pumps with inlet and outlet flanges at different heights on both sides, such as... Figure 3As shown, their respective specific testing processes are as follows:

[0078] (a) Ordinary vertical pumps with inlet and outlet flanges of 180°

[0079] (1) The control unit 15 adjusts the vertical pump under test to the preset Z-axis position through the vertical lifting mechanism according to the pump model information, and then starts the electric linear module four to move the vertical pump under test to the preset Y-axis position through the drive roller line mechanism. At this time, the centers of the inlet and outlet flanges, pressure measuring tube II 124 and pressure measuring tube III 125 of the vertical pump under test, which are adjusted to the Z-axis and Y-axis positions, are on the same straight line.

[0080] (2) The control unit 15 starts the hollow hydraulic cylinder II9, the hollow piston rod II starts to move, extends to the right, drives the pressure measuring sleeve II134 and the pressure measuring tube II124 to move to the right together, so that the pipe sealing surface 121 at the head end of the pressure measuring tube II124 is in contact with the inlet flange sealing surface of the vertical pump under test, and pushes the vertical pump under test to move to the right on the roller line mechanism until the outlet flange sealing surface of the vertical pump under test is in contact with and pressed against the pipe sealing surface 121 at the head end of the pressure measuring tube III125, and the vertical pump under test reaches the test position. Throughout the test, the hollow hydraulic cylinder II9 remains operational, ensuring a seal between the pressure testing tube II124, the inlet flange of the vertical pump under test, and the pressure testing tube III125, the outlet flange of the vertical pump under test. This allows the test pipeline inlet 20, the hollow piston rod II of the hollow hydraulic cylinder II9, the pressure testing tube II124, the vertical pump under test, the pressure testing tube III125, and the test pipeline outlet 21 to be sequentially connected to form the test medium passage.

[0081] (3) The cable lift 16 adjusts the end of the cable to the position matching the height of the vertical pump to be tested; the tester connects the cable to the motor of the vertical pump to be tested and then performs hydraulic performance testing on the vertical pump to be tested.

[0082] (4) After the test is completed, the tester introduces compressed air into the test medium passage to discharge the residual test medium. The hollow piston rod II of the hollow hydraulic cylinder II9 is ​​moved back to the left to the zero point. After the cable is removed, the vertical pump to be tested is moved back to the outer position. The pump installation lifting platform 3 and the cable lifting machine 16 are adjusted to the initial position.

[0083] (ii) Vertical pumps with inlet and outlet flanges on the same side but at different heights

[0084] (1) The control unit 15 adjusts the vertical pump under test to the preset Z-axis position through the vertical lifting mechanism according to the pump model information. Then, one servo motor of the electric linear module 1 on the left lifting frame 4 drives the upper left lifting docking mechanism to adjust to the preset height along the height direction of the left lifting frame 4, so that the pressure measuring tube 1 and the center of the outlet flange of the vertical pump under test are in the same horizontal plane; the other servo motor of the electric linear module 1 drives the lower left lifting docking mechanism to adjust to the preset height along the height direction of the left lifting frame 4, so that the pressure measuring tube 2 and the center of the inlet flange of the vertical pump under test are in the same horizontal plane.

[0085] The electric linear module four moves the vertical pump under test inward through the drive roller line mechanism and adjusts it to the preset Y-axis position. At this time, the vertical pump under test reaches the test station. The inlet flange of the vertical pump under test is located inside the flange fixing rod two, and the outlet flange of the vertical pump under test is located inside the flange fixing rod one.

[0086] (2) Control unit 15 starts hollow hydraulic cylinder one and hollow hydraulic cylinder two;

[0087] Hollow piston rod I of hollow hydraulic cylinder one extends to the right, driving pressure test sleeve one and pressure test tube one to move to the right together until the pipe sealing surface 121 at the end of pressure test tube one is attached to and pressed tightly against the outlet flange of the vertical pump under test; hollow piston rod I of hollow hydraulic cylinder two extends to the right, driving pressure test sleeve two and pressure test tube two to move to the right together until the pipe sealing surface 121 at the end of pressure test tube two is attached to and pressed tightly against the inlet flange of the vertical pump under test; the test pipeline inlet 20, hollow piston rod I of hollow hydraulic cylinder two, pressure test tube two, vertical pump under test, pressure test tube one, hollow piston rod I of hollow hydraulic cylinder one, and test pipeline outlet 21 are connected in sequence to form the test medium passage.

[0088] Throughout the test, hollow hydraulic cylinder one and hollow hydraulic cylinder two remained in working condition, ensuring that pressure testing pipe one and the outlet flange of the vertical pump under test, and pressure testing pipe two and the inlet flange of the vertical pump under test, remained in a sealed state.

[0089] (3) The operator adjusts the cable end of the cable hoist 16 to a suitable position and connects it to the motor of the vertical pump under test to provide working power, and then conducts hydraulic performance testing of the vertical pump under test.

[0090] (4) After the test is completed, the operator introduces compressed air to drain the remaining test medium in the test medium passage. The hollow piston rod I of hollow hydraulic cylinder one and hollow hydraulic cylinder two are retracted to the left to the zero point. After the cable is removed, the vertical pump to be tested is returned to the outer position. The pump installation lifting platform 3 and cable lifting machine 16 are adjusted to the initial position. The upper left lifting docking mechanism and the lower left lifting docking mechanism return to the original height position respectively.

[0091] (iii) Vertical pumps with inlet and outlet flanges at different heights on both sides

[0092] (1) The right lifting frame 5 is moved along the X-axis to the preset position and then locked;

[0093] The control unit 15 adjusts the vertical pump under test to the preset Z-axis position via the vertical lifting mechanism according to the pump model information. Then, the electric linear module 1 on the left lifting frame 4 drives the lower left lifting docking mechanism to adjust to the preset height along the height direction of the left lifting frame 4, and the pressure measuring tube 2 is in the same plane as the center of the inlet flange of the vertical pump under test;

[0094] The electric linear module 2 on the right lifting frame 5 drives the right lifting docking mechanism to adjust to the preset height along the height direction of the right lifting frame 5, and the pressure measuring tube 3 is on the same plane as the center of the outlet flange of the vertical pump to be tested.

[0095] The electric linear module four moves the vertical pump under test inward through the drive roller line mechanism and adjusts it to the preset Y-axis position. At this time, the vertical pump under test reaches the test station. The inlet flange of the vertical pump under test is located in the flange fixing rod two on the left lifting frame 4, and the outlet flange of the vertical pump under test is located in the flange fixing rod three on the right lifting frame 5.

[0096] (2) Control unit 15 starts hollow hydraulic cylinder three and hollow hydraulic cylinder two;

[0097] Hollow piston rod I of hollow hydraulic cylinder two extends to the right, driving pressure testing sleeve two and pressure testing tube two to move to the right together until the pipe sealing surface 121 at the end of pressure testing tube two is in contact with and pressed against the inlet flange sealing surface of the vertical pump under test; hollow piston rod I of hollow hydraulic cylinder three extends to the left, driving pressure testing sleeve three and pressure testing tube three to move to the left together until the pipe sealing surface 121 at the end of pressure testing tube three is in contact with and pressed against the outlet flange sealing surface of the vertical pump under test. The test pipeline inlet 20, hollow piston rod I of hollow hydraulic cylinder two, pressure testing tube two, vertical pump under test, pressure testing tube three, hollow piston rod I of hollow hydraulic cylinder three, and test pipeline outlet 21 are connected in sequence to form the test medium passage.

[0098] Throughout the test, hollow hydraulic cylinders two and three remained in operation, ensuring a sealed connection between pressure testing pipe two and the inlet flange of the vertical pump under test, and between pressure testing pipe three and the outlet flange of the vertical pump under test.

[0099] (3) The operator adjusts the cable end of the cable hoist 16 to a suitable position and connects it to the motor of the vertical pump to be tested to provide working power; then the hydraulic performance test of the vertical pump to be tested is carried out.

[0100] (4) After the test is completed, compressed air is introduced to drain the test medium remaining in the test medium passage. Hollow piston rod I of hollow hydraulic cylinder II is retracted to the left to zero point, and hollow piston rod I of hollow hydraulic cylinder III is retracted to the right to zero point. At this time, after the cable is removed, the vertical pump to be tested is returned to the outer position. The pump installation lifting platform 3 and cable lifting machine 16 are adjusted to the initial position. The upper left lifting docking mechanism on the left lifting frame 4 returns to the origin, and the right lifting docking mechanism on the right lifting frame 5 returns to the origin.

[0101] Finally, it should be noted that the above examples are merely some specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments and many variations are possible. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of the present invention should be considered within the scope of protection of the present invention.

Claims

1. An automated testing device for a lightweight vertical pump, comprising a base (1) and a main frame (2) horizontally disposed on the base (1) and fixedly connected to the base (1), characterized in that: It also includes multiple lifting docking mechanisms, a left lifting frame (4) and a right lifting frame (5); The lifting docking mechanism includes an upper left lifting docking mechanism, a lower left lifting docking mechanism, and a right lifting docking mechanism. The upper left lifting docking mechanism and the lower left lifting docking mechanism are located on the left lifting frame (4) and are slidably connected to the left lifting frame (4). The right lifting docking mechanism is located on the right lifting frame (5) and is slidably connected to the right lifting frame (5). Each lifting docking mechanism includes a hollow hydraulic cylinder I (6) with a hollow piston rod I. The head end of the hollow piston rod I is connected in sequence to a pressure measuring sleeve I (13) and a pressure measuring tube I (12). A left fixed docking mechanism is provided below the left elevator frame (4). The left fixed docking mechanism includes a hollow hydraulic cylinder II (9) with a hollow piston rod II. The head end of the hollow piston rod II is connected in sequence to a pressure measuring sleeve II (134) and a pressure measuring tube II (124). A right fixed docking mechanism is provided below the right elevator frame (5). The right fixed docking mechanism includes a pressure measuring tube III (125) and a flange-type adapter sleeve (135). A pump installation lifting platform (3) and a cable lift (16) are provided between the left lifting frame (4) and the right lifting frame (5).

2. The automated testing device for a miniature vertical pump according to claim 1, characterized in that: Electric linear module 1 is fixedly installed on the left lifting frame (4), and electric linear module 2 is fixedly installed on the right lifting frame (5). Electric linear module 1 includes two cylinder mounting slides, and electric linear module 2 includes one cylinder mounting slide. The hollow hydraulic cylinder I (6) of each lifting docking mechanism is fixedly connected to one cylinder mounting slide. Electric linear module 1 and electric linear module 2 are both signal connected to the control unit (15). The hollow hydraulic cylinder II (9) and the flange-type adapter sleeve (135) are both fixedly connected to the main frame (2); The pump installation lifting platform (3) is located in front of the main frame (2), and the cable lift (16) is located behind the main frame (2); the pump installation lifting platform (3) includes a vertical lifting mechanism, an electric linear module four and a roller line mechanism connected from bottom to top. A control unit (15) is provided on the left lifting frame (4), and an NFC sensor is provided on the pump mounting lifting platform (3). The NFC sensor, each hollow hydraulic cylinder I (6), hollow hydraulic cylinder II (9), vertical lifting mechanism, electric linear module IV, and cable lifting machine (16) are all connected to the control unit (15) via signal. The left lifting frame (4) is fixedly connected to the main frame (2), and the right lifting frame (5) is slidably connected to the main frame (2).

3. The automated testing device for a miniature vertical pump according to claim 2, characterized in that: Each lifting docking mechanism also includes a U-shaped flange fixing rod (17) and a flange compensation plate (8). One end of the flange fixing rod (17) is rotatably connected to the cylinder mounting slide, and the other end is plugged into the flange compensation plate (8). The pressure measuring pipe I (12) and the pressure measuring pipe sleeve I (13) are located inside the U-shaped structure of the flange fixing rod (17). One side of the pressure measuring sleeve I (13) is threaded to the hollow piston rod I, and the other side is plugged into the pressure measuring tube I (12); one side of the pressure measuring sleeve II (134) is threaded to the hollow piston rod II, and the other side is plugged into the pressure measuring tube II (124); both the end face of the pressure measuring sleeve I (13) connected to the hollow piston rod I and the end face of the pressure measuring sleeve II (134) connected to the hollow piston rod II are provided with trapezoidal O-ring mounting grooves and are equipped with O-ring seals; The pressure measuring tube I (12), pressure measuring tube II (124) and pressure measuring tube III (125) are all tubular components. A radial limiting flange (122) is provided on the tube body near the tail end, and a radial flange is provided at the head end as a tube sealing surface (121). An O-ring mounting groove with a trapezoidal cross section is provided on the tube sealing surface (121) and an O-ring is installed. The flange-type adapter sleeve (135) and the pressure measuring tube Ⅲ (125) are connected by a plug-in type.

4. The automated testing device for a miniature vertical pump according to claim 3, characterized in that: The vertical lifting mechanism includes a scissor-type bracket and a servo motor five that drives the scissor-type bracket to open and close, and a lead screw lifting mechanism; an electric linear module four is fixedly installed on the top of the vertical lifting mechanism, including a movable slide; a roller line mechanism is fixedly connected to the movable slide of the electric linear module four, including a roller group arranged in an array along the Y-axis.

5. The automated testing device for a miniature vertical pump according to claim 4, characterized in that: The cable lift (16) includes a forward support rod (22), an electric linear module three, and two flexible cables. The flexible cables are located in the forward support rod (22), and the forward support rod (22) is fixedly connected to the slider of the electric linear module three.

6. A test method using an automated testing device for a miniature vertical pump as described in any one of claims 1-5, characterized in that: The vertical pump to be tested, located on the tooling plate, is transported to the pump installation lifting platform (3). The pump installation lifting platform (3) reads the pump model information from the NFC chip on the tooling plate and then performs any of the following docking modes according to the pump model: Mode 1: For a standard vertical pump with 180° inlet and outlet flanges, the left fixed docking mechanism is connected to the inlet flange of the vertical pump under test, and the right fixed docking mechanism is connected to the outlet flange of the vertical pump under test. Mode 2: For vertical pumps under test where the inlet and outlet flanges are on the same side but at different heights, the lower left lifting docking mechanism connects the pipeline to the inlet flange of the vertical pump under test, and the upper left lifting docking mechanism connects the pipeline to the outlet flange of the vertical pump under test. Mode 3: For vertical pumps under test with inlet and outlet flanges at different heights on both sides, the lower left lifting docking mechanism connects the pipeline to the inlet flange of the vertical pump under test, and the right lifting docking mechanism connects the pipeline to the outlet flange of the vertical pump under test. After docking is completed, perform pump testing.

7. The test method according to claim 6, characterized in that: The specific process for connecting the left fixed docking mechanism to the inlet flange of the vertical pump under test and the right fixed docking mechanism to the outlet flange of the vertical pump under test in Mode 1 is as follows: The vertical lifting mechanism adjusts the vertical pump under test to the preset Z-axis position, and the electric linear module four adjusts the vertical pump under test to the preset Y-axis position. Hollow piston rod II drives pressure testing sleeve II (134) and pressure testing tube II (124) to move to the right together, so that pressure testing tube II (124) fits with the inlet flange of the vertical pump under test, and pushes the vertical pump under test to move to the right on the roller line mechanism until the outlet flange of the vertical pump under test fits with and is pressed tightly with pressure testing tube III (125). The test pipeline inlet (20), hollow piston rod II, pressure testing tube II (124), vertical pump under test, pressure testing tube III (125) and test pipeline outlet (21) are connected in sequence to form the test medium passage; throughout the test process, hollow hydraulic cylinder II (9) remains in working state.

8. The test method according to claim 6, characterized in that: The specific process for connecting the pipeline between the lower left lifting docking mechanism and the inlet flange of the vertical pump under test, and between the upper left lifting docking mechanism and the outlet flange of the vertical pump under test in Mode 2, is as follows: (1) The vertical lifting mechanism adjusts the vertical pump under test to the preset Z-axis position; the upper left lifting docking mechanism and the lower left lifting docking mechanism are adjusted to the preset height respectively, and then the electric linear module four adjusts the vertical pump under test to the preset Y-axis position, so that the outlet flange of the vertical pump under test is inside the flange fixing rod one and the inlet flange is inside the flange fixing rod two. (2) The hollow piston rod I of the hollow hydraulic cylinder one extends to the right until the pressure measuring tube one is attached to and pressed against the outlet flange of the vertical pump under test; the hollow piston rod I of the hollow hydraulic cylinder two extends to the right until the pressure measuring tube two is attached to and pressed against the inlet flange of the vertical pump under test; the test pipeline inlet (20), the hollow piston rod I of the hollow hydraulic cylinder two, the pressure measuring tube two, the vertical pump under test, the pressure measuring tube one, the hollow piston rod I of the hollow hydraulic cylinder one, and the test pipeline outlet (21) are connected in sequence to form the test medium passage; throughout the test process, the hollow hydraulic cylinder one and the hollow hydraulic cylinder two remain in working condition.

9. The test method according to claim 6, characterized in that: The specific process for connecting the pipeline between the lower left lifting docking mechanism and the inlet flange of the vertical pump under test, and between the right lifting docking mechanism and the outlet flange of the vertical pump under test in Mode 3, is as follows: (1) The right lifting frame (5) moves along the X-axis to the preset position and locks it; the vertical lifting mechanism adjusts the vertical pump to be tested to the preset Z-axis position; the left lower lifting docking mechanism and the right lifting docking mechanism are adjusted to the preset height respectively, and then the electric linear module four adjusts the vertical pump to be tested to the preset position in the Y-axis, so that the outlet flange of the vertical pump to be tested is in the flange fixing rod three and the inlet flange is in the flange fixing rod two; (2) The hollow piston rod I of the hollow hydraulic cylinder three extends to the left until the pressure measuring tube three is attached to and pressed against the outlet flange of the vertical pump under test. The hollow piston rod I of the hollow hydraulic cylinder two extends to the right until the pressure measuring tube two is attached to and pressed against the inlet flange of the vertical pump under test. The test pipeline inlet (20), the hollow piston rod I of the hollow hydraulic cylinder two, the pressure measuring tube two, the vertical pump under test, the pressure measuring tube three, the hollow piston rod I of the hollow hydraulic cylinder three and the test pipeline outlet (21) are connected in sequence to form the test medium passage. Throughout the test, the hollow hydraulic cylinder three and the hollow hydraulic cylinder two remain in working condition.

10. The test method according to claim 6, characterized in that: The process of performing the pump test is as follows: the cable lift (16) adjusts the end of the cable to the position matching the height of the vertical pump under test and connects it to the vertical pump under test, and then introduces the test medium into the test medium passage to perform the hydraulic performance test of the vertical pump under test. After the test is completed, the remaining test medium is discharged; hollow piston rod I and hollow piston rod II are both returned to the zero position, and the pump installation lifting platform (3), cable lifting machine (16), upper left lifting docking mechanism, lower left lifting docking mechanism and right lifting docking mechanism are all returned to the origin.

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