Performance detection equipment for pressure-resistant centrifugal pump

Abstract

The invention discloses performance detection equipment for a pressure-resistant centrifugal pump, and belongs to the technical field of pump detection.The performance detection equipment comprises a rack and further comprises a conveying device, a transverse clamping device, an automatic centering device and a testing device.The conveying device is installed on the upper side of the rack, and a supporting bottom frame is fixedly installed on the left side of the rack; two supporting rods are fixedly installed on the supporting bottom frame, the two transverse clamping devices are installed on the left side and the right side of the supporting bottom frame in a bilateral symmetry mode respectively, the automatic centering device is installed on the transverse clamping devices, and the testing device is installed on the rack. The automatic centering device comprises a fixed circular ring, a rotating circular ring, a first supporting seat, a second supporting seat and a first limiting rod. By means of the mode, the automatic centering clamping device can conduct rapid and automatic centering clamping on the input end and the output end of the water pump in the vertical direction and the front-back direction, can conduct rapid butt joint of pipelines, and can be rapidly adjusted to adapt to wiring of water pump junction boxes of different sizes.

Description

Technical Field

[0001] The present invention relates to the technical field of pump detection, and specifically to a performance detection device for a pressure-resistant centrifugal pump. Background Art

[0002] A pressure-resistant centrifugal pump is a centrifugal pump designed specifically for high-pressure working conditions. Before leaving the factory, a centrifugal pump usually needs to be tested for its flow rate and mechanical seal performance at the maximum rated power within a certain period of time to meet the factory requirements. When conducting the performance test of the centrifugal pump, the centrifugal pump is usually hoisted onto the detection device first, and then the input pipeline and output pipeline of the centrifugal pump are connected to the water inlet and outlet of a circulating water tank. Then, the circuit of the centrifugal pump is connected, the centrifugal pump is started, and the mechanical seal performance of the centrifugal pump at the rated maximum power is observed. At the same time, various sensors such as flow meters are used to detect the performance of the centrifugal pump.

[0003] Chinese Patent with Publication No. CN219827177U proposes an experimental machine for measuring the comprehensive performance of a centrifugal pump, including a base, a water tank, and a water pump performance detection mechanism. The water tank and the water pump performance detection mechanism are both installed at the top of the base. There is an opening at the top of the water tank, and a chamber is arranged inside the water tank. It also includes a stirring mechanism, an electric heating plate, a controller, and a temperature monitor. The stirring mechanism is installed in the chamber. Electric heating plates are arranged at the left and right ends of the chamber respectively, a temperature monitor is arranged at the left end of the chamber, the controller is installed at the top of the base, and the electric heating plate and the temperature monitor are both electrically connected to the controller. The stirring mechanism includes a motor, a rotating shaft, a support rod, a stirring paddle, and a support plate. The support plate is horizontally installed in the chamber, a motor is arranged at the top of the support plate, the output end of the motor extends below the support plate and is connected to the top of the rotating shaft. Multiple groups of support rods are installed on the rotating shaft in the chamber, and the outer ends of multiple groups of support rods are all connected to the inner ends of the stirring paddles. The motor is electrically connected to the controller. The water pump performance detection mechanism includes a support platform, a pump body, a mounting seat, an inlet pipe, a return pipe, a flow meter, a pressure gauge, a first valve, and a vacuum gauge. The support platform is installed at the top of the base.

[0004] However, the technical solution of this patent has the following problems: This patent cannot perform quick automatic centering clamping on the upper and lower positions and front and rear positions of the water pump input and output ends, and cannot perform quick docking of pipelines and quick wiring.

[0005] Based on this, the present invention designs a performance detection device for a pressure-resistant centrifugal pump to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned drawbacks of the prior art, the present invention provides a performance detection device for a pressure-resistant centrifugal pump.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: A performance detection device for a pressure-resistant centrifugal pump, including a frame, further including: a conveying device, a transverse clamping device, an automatic centering device, and a testing device. The conveying device is installed on the upper side of the frame. A support bottom frame is fixedly installed on the left side of the frame. Two support rods are fixedly installed on the support bottom frame. The two transverse clamping devices are respectively installed on the left and right sides of the support bottom frame symmetrically. The automatic centering device is installed on the transverse clamping device. The testing device is installed on the frame. The automatic centering device includes: a fixed ring, a rotating ring, a first support seat, a second support seat, and a first limiting rod. The fixed ring is installed on the side of the transverse clamping device close to the center of the support bottom frame. The rotating ring is rotatably connected to the fixed ring. The two first support seats are hinged on the rotating ring and are located on the same diameter of the rotating ring. The two second support seats are hinged to the fixed ring and are located on the same diameter of the fixed ring. One end of the first limiting rod is rotatably connected to the first support seat, and the other end of the first limiting rod is slidably connected to the second support seat. The two first limiting rods are parallel to each other. The automatic centering device further includes: an upper and lower limiting component, and the upper and lower limiting component is installed on the fixed ring.

[0008] Furthermore, the upper and lower limiting component includes: a servo electric cylinder, a third support seat, a fourth support seat, and a second limiting rod. One end of the servo electric cylinder is hinged to the transverse clamping device, and the output end of the servo electric cylinder is hinged to the rotating ring. The two third support seats are hinged on the rotating ring and are located on the same diameter of the rotating ring. The two fourth support seats are hinged to the fixed ring and are located on the same diameter of the fixed ring. One end of the second limiting rod is rotatably connected to the third support seat, and the other end of the second limiting rod is slidably connected to the fourth support seat. The two second limiting rods are parallel to each other. The first limiting rod is closer to the center position of the support bottom frame than the second limiting rod.

[0009] Furthermore, the transverse clamping device includes: a cylinder, a sliding plate, a moving interface, and a quick-release interface. One end of the two cylinders is fixedly installed on the support bottom frame. The sliding plate is slidably connected to the support rod. The output end of the cylinder is fixedly connected to the side of the sliding plate away from the center of the support bottom frame. The moving interface is fixedly installed on the sliding plate. The quick-release interface is threadedly connected to one end of the moving interface close to the center of the support bottom frame. The fixed ring is fixedly installed on the side of the sliding plate of the transverse clamping device close to the center of the support bottom frame. One end of the servo electric cylinder is hinged to the sliding plate of the transverse clamping device.

[0010] Furthermore, the transverse clamping device further includes: a telescopic component, and the telescopic component is installed on the moving interface.

[0011] Furthermore, the telescopic assembly includes: a fixed interface, a fixed support frame, a connecting rod, a movable support frame, a corrugated pipe, and a spring. The fixed interface is fixedly installed on the support bottom frame. The fixed support frame is fixedly installed on one side of the fixed interface close to the center of the support bottom frame. One end of multiple connecting rods is fixedly installed on one side of the fixed support frame close to the center of the support bottom frame. The movable support frame is slidably connected to the connecting rod. One end of the corrugated pipe is fixedly connected to one side of the fixed support frame close to the center of the support bottom frame. The other end of the corrugated pipe is fixedly connected to one side of the movable support frame away from the center of the support bottom frame. The spring is arranged on the connecting rod. One end of the spring is fixedly connected to one side of the movable support frame close to the center of the support bottom frame. The other end of the spring is fixedly connected to one side of the connecting rod close to the center of the support bottom frame. The end of the movable interface away from the sliding plate is fixedly connected to the movable support frame.

[0012] Furthermore, the testing device includes: a water storage tank, a testing pipeline, a flowmeter, and an electric valve. The water storage tank is fixedly installed on the right side of the frame. One end of the testing pipeline is fixedly installed on the fixed interface of the left lateral clamping device. The other end of the testing pipeline is fixedly installed on the upper side of the water storage tank. The flowmeter is installed on the testing pipeline. One end of the electric valve is fixedly installed on the right side of the support bottom frame. The other end of the electric valve is fixedly installed on the left side of the water storage tank.

[0013] Furthermore, the testing device further includes: a circulating mechanism. The circulating mechanism is installed on the frame. The circulating mechanism includes: a cross bar, a slider, a connecting line, a cross plate, and a C-shaped frame. The cross bar is fixedly installed on the upper side of the frame. The slider is slidably connected to the cross bar. One end of the connecting line is fixedly installed on the slider. The cross plate is fixedly installed at the other end of the connecting line. The C-shaped frame is slidably connected to the lower side of the cross plate. Multiple tension springs are fixedly installed on the cross plate. The end of the tension spring away from the cross plate is fixedly connected to the C-shaped frame.

[0014] Furthermore, the circulation mechanism further includes: a fixed extension plate, a sliding extension plate, a first connecting plate, a second connecting plate, a driving motor, and a threaded rod. The fixed extension plate is fixedly installed on the left side of the C-shaped frame. The two sliding extension plates are slidably connected to the right side of the C-shaped frame. Two first connecting plates are hinged on both the fixed extension plate and the right sliding extension plate. The middle sides of the two second connecting plates are hinged on the middle sliding extension plate. One end of the left first connecting plate away from the fixed extension plate is hinged on the left side of the second connecting plate. One end of the right first connecting plate away from the right sliding extension plate is hinged on the right side of the second connecting plate. The driving motor is fixedly installed on the left side of the C-shaped frame. One end of the threaded rod is fixedly connected to the output shaft of the driving motor, and the other end of the threaded rod is rotatably connected to the C-shaped frame. The rightmost sliding extension plate is threadedly connected to the middle side of the threaded rod through a bracket. Conductive contacts are fixedly installed on the rear sides of the fixed extension plate and the sliding extension plate, and the conductive contacts are electrically connected to the connecting wires.

[0015] Furthermore, the circulation mechanism further includes: a water delivery component. The water delivery component is installed on the support bottom frame. The water delivery component includes: a small water pump, a connecting pipe, and a water outlet. The small water pump is fixedly installed on the right side of the support bottom frame. One end of the connecting pipe penetrates through the support bottom frame and is fixedly connected to the output end of the small water pump. The other end of the connecting pipe is fixedly connected to the upper side of the water storage tank. The water outlet is fixedly connected to the lower right side of the water storage tank.

[0016] Furthermore, the conveying device includes: an extension frame, a linear module, and an electric hoist. The extension frame is fixedly installed on the upper side of the frame. The linear module is fixedly installed on the extension frame. The electric hoist is fixedly installed on the output end of the linear module.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the present invention, the servo electric cylinder drives the rotating ring to rotate on the fixed ring. The rotation of the rotating ring drives the first support seat to move. The movement of the first support seat cooperates with the second support seat, so that the movement of the first support seat drives the two first limiting rods to approach each other, quickly performing centering clamping on the input and output ends of the water pump to be tested in the front and rear directions; the movement of the third support seat cooperates with the fourth support seat, so that the movement of the third support seat drives the two second limiting rods to approach each other, quickly performing centering clamping on the input and output ends of the water pump to be tested in the up and down directions, which is beneficial to quickly and automatically perform centering clamping on the input and output ends of the water pump in the up and down directions and the front and rear directions. 2. The elongation of the cylinder output end of the horizontal clamping device drives the sliding plate to move towards the center of the support bottom frame. The movement of the sliding plate towards the center of the support bottom frame drives the moving interface and the quick-release interface to move towards the center of the support bottom frame. The quick-release interface contacts the input or output end of the water pump, causing the water pump to move left and right. The rotation of the first limit rod and the second limit rod helps to reduce the friction when the water pump moves left and right. The quick-release interface abuts against the input or output end of the water pump after automatic centering and clamping, realizing rapid pipeline docking, which is conducive to rapid pipeline docking. 3. The left and right movement of the rightmost sliding extension plate drives the left and right movement of the first connecting plate and the second connecting plate. The left and right movement of the first connecting plate and the second connecting plate drives the left and right movement of the middle sliding extension plate, realizing the synchronous left and right movement of the sliding extension plates. This enables rapid equal-spacing adjustment between the fixed extension plate and the sliding extension plates. The rapid equal-spacing adjustment between the fixed extension plate and the sliding extension plates allows the conductive contacts thereon to be rapidly adjusted at equal intervals to adapt to the connecting contacts with different intervals in the junction boxes of water pumps of different sizes, which is conducive to rapidly adjusting the conductive contacts to adapt to the connecting contacts with different intervals in the junction boxes of water pumps of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 Schematic three-dimensional structure of the present invention Figure 1 ; Figure 2 Front view of the present invention; Figure 3 Top view of the present invention; Figure 4 Schematic three-dimensional structure of the present invention Figure 2 ; Figure 5 Schematic structural diagram of the present invention with some frames and testing devices removed; Figure 6 Partial structural schematic diagram of the automatic centering device of the present invention; Figure 7 Partial structural schematic diagram of the horizontal clamping device of the present invention; Figure 8 Partial structural schematic diagram of the testing device of the present invention Figure 1 ; Figure 9 Partial structural schematic diagram of the testing device of the present invention Figure 2 ; Figure 10 Partial structural schematic diagram of the test device of the present invention Figure 3 。

[0020] The reference numerals in the figure respectively represent: 1, frame; 2, conveying device; 21, extension frame; 22, linear module; 23, electric hoist; 3, horizontal clamping device; 31, cylinder; 32, sliding plate; 33, moving interface; 34, quick-release interface; 35, fixed interface; 36, fixed support frame; 37, connecting rod; 38, moving support frame; 39, bellows; 310, spring; 4, automatic centering device; 41, fixed ring; 42, rotating ring; 43, first support seat; 44, second support seat; 45, first limiting rod; 46, servo electric cylinder; 47, third support seat; 48, fourth support seat; 49, second limiting rod; 5, test device; 51, reservoir; 52, test pipeline; 53, flowmeter; 54, electric valve; 55, cross bar; 56, slider; 57, connecting wire; 58, cross plate; 59, C-shaped frame; 510, tension spring; 511, fixed extension plate; 512, sliding extension plate; 513, first connecting plate; 514, second connecting plate; 515, driving motor; 516, threaded rod; 517, small water pump; 518, connecting pipeline; 519, water outlet; 520, conductive contact; 6, supporting bottom frame; 7, supporting rod. Specific embodiments

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] The present invention will be further described below with reference to the embodiments.

[0023] The "left", "right", "front", "rear", "upper" and "lower" mentioned in the following description are oriented in the perspective direction of the front view.

[0024] Embodiment 1: In some embodiments, please refer to Figures 1 - 10, A performance detection device for a pressure-resistant centrifugal pump, including a frame 1, and further including: a conveying device 2, a transverse clamping device 3, an automatic centering device 4, and a testing device 5. The conveying device 2 is installed on the upper side of the frame 1. A support bottom frame 6 is fixedly installed on the left side of the frame 1. Two support rods 7 are fixedly installed on the support bottom frame 6. The two transverse clamping devices 3 are respectively installed on the left and right sides of the support bottom frame 6 symmetrically left and right. The automatic centering device 4 is installed on the transverse clamping device 3. The testing device 5 is installed on the frame 1. The automatic centering device 4 includes: a fixed ring 41, a rotating ring 42, a first support seat 43, a second support seat 44, and a first limiting rod 45. The fixed ring 41 is installed on the side of the transverse clamping device 3 close to the center of the support bottom frame 6. The rotating ring 42 is rotatably connected to the fixed ring 41. The two first support seats 43 are hinged on the rotating ring 42 and are located on the same diameter of the rotating ring 42. The two second support seats 44 are hinged to the fixed ring 41 and are located on the same diameter of the fixed ring 41. One end of the first limiting rod 45 is rotatably connected to the first support seat 43, and the other end of the first limiting rod 45 is slidably connected to the second support seat 44. The two first limiting rods 45 are parallel to each other. The automatic centering device 4 further includes: an up-and-down limiting component, and the up-and-down limiting component is installed on the fixed ring 41.

[0025] The conveying device 2 is used to convey the water pump to be tested. The transverse clamping device 3 is used to quickly transversely clamp the input end and the output end of the water pump to be tested. The automatic centering device 4 automatically centers the water pump to be tested quickly in the up-and-down and front-and-back directions, facilitating the subsequent clamping of the transverse clamping device 3. The testing device 5 tests the performance of the water pump to be tested.

[0026] As Figure 6 shown, the rotating ring 42 of the automatic centering device 4 rotates on the fixed ring 41. The rotation of the rotating ring 42 drives the first support seat 43 to move. The movement of the first support seat 43 drives the first limiting rod 45 to move. The second support seat 44 limits the movement of the first limiting rod 45, causing the first limiting rod 45 to slide on the second support seat 44. The movement of the two first support seats 43 drives the two first limiting rods 45 to approach each other, quickly centering and clamping the input and output ends of the water pump to be tested in the front-and-back direction.

[0027] The upper and lower limit components include: a servo cylinder 46, a third support base 47, a fourth support base 48, and a second limit rod 49. One end of the servo cylinder 46 is hinged to the transverse clamping device 3, and the output end of the servo cylinder 46 is hinged to the rotating ring 42. Two of the third support bases 47 are hinged to the rotating ring 42 and are located on the same diameter of the rotating ring 42. Two of the fourth support bases 48 are hinged to the fixed ring 41 and are located on the same diameter of the fixed ring 41. One end of the second limit rod 49 is rotatably connected to the third support base 47, and the other end of the second limit rod 49 is slidably connected to the fourth support base 48. The first limit rod 45 is closer to the center position of the support bottom frame 6 than the second limit rod 49.

[0028] When the output end of the servo cylinder 46 extends, it drives the rotating ring 42 to rotate on the fixed ring 41. The rotation of the rotating ring 42 drives the third support base 47 to move. The movement of the third support base 47 drives the second limit rod 49 to move. The fourth support base 48 limits the movement of the second limit rod 49, causing the second limit rod 49 to slide on the fourth support base 48. The movement of the two third support bases 47 drives the two second limit rods 49 to approach each other, quickly centering and clamping the input and output ends of the water pump to be measured in the up and down directions, which is beneficial for quickly and automatically centering and clamping the input and output ends of the water pump in the up and down and front and back directions.

[0029] Embodiment 2: In some embodiments, as Figures 1 - 10 shown, as a preferred embodiment of the present invention, the transverse clamping device 3 includes: a cylinder 31, a sliding plate 32, a moving interface 33, and a quick-release interface 34. One end of the two cylinders 31 is fixedly installed on the support bottom frame 6. The sliding plate 32 is slidably connected to the support rod 7. The output end of the cylinder 31 is fixedly connected to the side of the sliding plate 32 away from the center of the support bottom frame 6. The moving interface 33 is fixedly installed on the sliding plate 32. The quick-release interface 34 is threadedly connected to one end of the moving interface 33 close to the center of the support bottom frame 6. The fixed ring 41 is fixedly installed on the side of the sliding plate 32 of the transverse clamping device 3 close to the center of the support bottom frame 6. One end of the servo cylinder 46 is hinged to the sliding plate 32 of the transverse clamping device 3.

[0030] As Figure 7 shown, when the output end of the cylinder 31 of the transverse clamping device 3 extends, it drives the sliding plate 32 to move towards the center of the support bottom frame 6. The movement of the sliding plate 32 towards the center of the support bottom frame 6 drives the moving interface 33 and the quick-release interface 34 to move towards the center of the support bottom frame 6. The quick-release interface 34 contacts the input or output end of the water pump, causing the water pump to move left and right. The rotation of the first limit rod 45 and the second limit rod 49 is beneficial for reducing the friction when the water pump moves left and right. The quick-release interface 34 abuts against the input or output end of the water pump after automatic centering and clamping, realizing rapid pipeline docking.

[0031] The horizontal clamping device 3 further includes: a telescopic assembly, and the telescopic assembly is installed on the moving interface 33.

[0032] The telescopic assembly includes: a fixed interface 35, a fixed support frame 36, a connecting rod 37, a moving support frame 38, a corrugated pipe 39, and a spring 310. The fixed interface 35 is fixedly installed on the support bottom frame 6. The fixed support frame 36 is fixedly installed on one side of the fixed interface 35 close to the center of the support bottom frame 6. One ends of a plurality of the connecting rods 37 are fixedly installed on one side of the fixed support frame 36 close to the center of the support bottom frame 6. The moving support frame 38 is slidably connected to the connecting rod 37. One end of the corrugated pipe 39 is fixedly connected to one side of the fixed support frame 36 close to the center of the support bottom frame 6. The other end of the corrugated pipe 39 is fixedly connected to one side of the moving support frame 38 away from the center of the support bottom frame 6. The spring 310 is arranged on the connecting rod 37. One end of the spring 310 is fixedly connected to one side of the moving support frame 38 close to the center of the support bottom frame 6. The other end of the spring 310 is fixedly connected to one side of the connecting rod 37 close to the center of the support bottom frame 6. The end of the moving interface 33 away from the sliding plate 32 is fixedly connected to the moving support frame 38.

[0033] The movement of the sliding plate 32 towards the center of the support bottom frame 6 drives the moving interface 33 and the quick-release interface 34 to move towards the center of the support bottom frame 6. The movement of the moving interface 33 towards the center of the support bottom frame 6 drives the moving support frame 38 to move towards the center of the support bottom frame 6. The movement of the moving support frame 38 towards the center of the support bottom frame 6 causes the corrugated pipe 39 to be stretched, and at the same time the spring 310 is compressed. The connecting rod 37 is used to limit the left and right movement of the moving support frame 38.

[0034] The shortening of the output end of the air cylinder 31 drives the sliding plate 32 to move away from the center of the support bottom frame 6. The movement of the sliding plate 32 away from the center of the support bottom frame 6 drives the moving interface 33 and the quick-release interface 34 to move away from the center of the support bottom frame 6. The quick-release interface 34 leaves the input or output end of the water pump, and the automatic centering device 4 releases the centering limit on the water pump, realizing the quick release of the test state of the water pump. The compressed spring 310 is restored to assist the moving support frame 38 to move to the initial position. The quick-release interface 34 can be unscrewed from the moving interface 33 to replace the quick-release interface 34, and different quick-release interfaces 34 can be replaced to adapt to water pumps with too large differences in input or output end sizes.

[0035] Embodiment 3: In some embodiments, such as Figures 1 - 10As shown, as a preferred embodiment of the present invention, the test device 5 includes: a water storage tank 51, a test pipeline 52, a flowmeter 53, and an electric valve 54. The water storage tank 51 is fixedly installed on the right side of the frame 1. One end of the test pipeline 52 is fixedly installed on the fixed interface 35 of the left lateral clamping device 3, and the other end of the test pipeline 52 is fixedly installed on the upper side of the water storage tank 51. The flowmeter 53 is installed on the test pipeline 52. One end of the electric valve 54 is fixedly installed on the right side of the support bottom frame 6, and the other end of the electric valve 54 is fixedly installed on the left side of the water storage tank 51.

[0036] A certain amount of water is placed in the water storage tank 51. After the water pump to be tested is centered by the automatic centering device 4 and clamped by the lateral clamping device 3, the electric valve 54 of the test device 5 is opened. The water in the water storage tank 51 enters the water pump after passing through the fixed interface 35, the corrugated pipe 39, the movable interface 33, and the quick-release interface 34 of the right lateral clamping device 3. The water pump is started, and the water pump pumps the water in the water storage tank 51 to the left lateral clamping device 3 and enters the test pipeline 52 from the left lateral clamping device 3. At this time, the operating state of the water pump can be observed. The water pump is set at the rated maximum power, and the flowmeter 53 at the position of the test pipeline 52 is used to detect the water output flow of the water pump. It is also possible to detect the water pressure at both ends of the water pump during operation by setting the FST800-1500 compact pressure sensor produced by Hunan First Sensor Co., Ltd. at the two fixed interfaces 35, especially for detecting the water pressure generated during the operation of the pressure-resistant centrifugal pump.

[0037] As Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8 , Figure 9 , Figure 10 As shown, the test device 5 further includes: a circulation mechanism. The circulation mechanism is installed on the frame 1. The circulation mechanism includes: a cross bar 55, a slider 56, a connecting line 57, a cross plate 58, and a C-shaped frame 59. The cross bar 55 is fixedly installed on the upper side of the frame 1. The slider 56 is slidably connected to the cross bar 55. One end of the connecting line 57 is fixedly installed on the slider 56, and the cross plate 58 is fixedly installed at the other end of the connecting line 57. The C-shaped frame 59 is slidably connected to the lower side of the cross plate 58. A plurality of tension springs 510 are fixedly installed on the cross plate 58, and the ends of the tension springs 510 away from the cross plate 58 are fixedly connected to the C-shaped frame 59.

[0038] The cross plate 58 and the C-shaped frame 59 of the circulation mechanism are hung by the connecting line 57. When the cross plate 58 and the C-shaped frame 59 are moved left and right, the left and right movement of the cross plate 58 drives the connecting line 57 to move left and right. The cross bar 55 and the slider 56 are used to support the connecting line 57 and limit its left and right movement.

[0039] The loop mechanism further includes: a fixed extension plate 511, a sliding extension plate 512, a first connecting plate 513, a second connecting plate 514, a driving motor 515, and a threaded rod 516. The fixed extension plate 511 is fixedly installed on the left side of the C-shaped frame 59. The two sliding extension plates 512 are slidably connected to the right side of the C-shaped frame 59. Two first connecting plates 513 are hinged on both the fixed extension plate 511 and the right sliding extension plate 512. The middle sides of the two second connecting plates 514 are hinged on the middle sliding extension plate 512. One end of the left first connecting plate 513 away from the fixed extension plate 511 is hinged on the left side of the second connecting plate 514. One end of the right first connecting plate 513 away from the right sliding extension plate 512 is hinged on the right side of the second connecting plate 514. The driving motor 515 is fixedly installed on the left side of the C-shaped frame 59. One end of the threaded rod 516 is fixedly connected to the output shaft of the driving motor 515. The other end of the threaded rod 516 is rotatably connected to the C-shaped frame 59. The rightmost sliding extension plate 512 is threadedly connected to the middle side of the threaded rod 516 through a bracket. Conductive contacts 520 are fixedly installed on the rear sides of both the fixed extension plate 511 and the sliding extension plate 512. The conductive contacts 520 are electrically connected to the connecting wire 57.

[0040] The rotation of the output shaft of the driving motor 515 drives the rotation of the threaded rod 516. The rotation of the threaded rod 516 drives the left and right movement of the rightmost sliding extension plate 512. The left and right movement of the rightmost sliding extension plate 512 drives the left and right movement of the first connecting plate 513 and the second connecting plate 514. The left and right movement of the first connecting plate 513 and the second connecting plate 514 drives the left and right movement of the middle sliding extension plate 512, realizing the synchronous left and right movement of the sliding extension plate 512, enabling the formation of an equal-spacing and rapid adjustment between the fixed extension plate 511 and the sliding extension plate 512. The equal-spacing and rapid adjustment of the fixed extension plate 511 and the sliding extension plate 512 enables the conductive contacts 520 thereon to be adjusted equally and rapidly to adapt to the connecting contacts with different spacings in the junction boxes of water pumps with different sizes.

[0041] Move the cross plate 58 upward, and the tension spring 510 undergoes elastic deformation, clamping the cross plate 58 on the upper connecting contact in the junction box of the water pump. After the spacing of the conductive contacts 520 is adjusted, the conductive contacts 520 are clamped on the lower connecting contact in the junction box of the water pump. The tension spring 510 that has undergone elastic deformation provides a pulling force for the cross plate 58, the fixed extension plate 511, and the sliding extension plate 512. Since the connecting contacts of the water pump are usually conductive screws, the cross plate 58 and the conductive contacts 520 can be fixed on the connecting contacts of the water pump and will not easily fall off, enabling the cross plate 58, the fixed extension plate 511, and the sliding extension plate 512 to be quickly fixed in the junction box of the water pump.

[0042] The circulating mechanism further includes: a water delivery component, which is installed on the support bottom frame 6. The water delivery component includes: a small water pump 517, a connecting pipe 518, and a water outlet 519. The small water pump 517 is fixedly installed on the right side of the support bottom frame 6. One end of the connecting pipe 518 penetrates through the support bottom frame 6 and is fixedly connected to the output end of the small water pump 517. The other end of the connecting pipe 518 is fixedly connected to the upper side of the water storage tank 51. The water outlet 519 is fixedly connected to the lower right side of the water storage tank 51.

[0043] When the quick-release interface 34 leaves the input or output end of the water pump, the automatic centering device 4 releases the centering limit on the water pump. After the water pump quickly exits the test state, the remaining water in the water pump falls into the support bottom frame 6. The small water pump 517 of the water delivery component pumps the water in the support bottom frame 6 into the connecting pipe 518 and then into the water storage tank 51, which is beneficial for the cyclic test use of water. The water outlet 519 is used to drain the water in the water storage tank 51, facilitating the cleaning of the water storage tank 51.

[0044] The conveying device 2 includes: an extension frame 21, a linear module 22, and an electric hoist 23. The extension frame 21 is fixedly installed on the upper side of the frame 1. The linear module 22 is fixedly installed on the extension frame 21. The electric hoist 23 is fixedly installed on the output end of the linear module 22.

[0045] The electric hoist 23 of the conveying device 2 lifts the water pump to be tested. The output end of the linear module 22 moves back and forth to drive the electric hoist 23 and the water pump to be tested to move back and forth. After the water pump to be tested moves to a general position in the middle of the support bottom frame 6, it stops moving. The electric hoist 23 drives the water pump to be tested to move downward. After moving to a general position of the automatic centering device 4, it stops moving for subsequent centering and clamping operations. After the water pump is detected, the water pump can be removed from the device through the linear module 22 and the electric hoist 23.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A performance testing device for a pressure-resistant centrifugal pump, comprising a frame (1), characterized in that: Also includes: A conveying device (2), a transverse clamping device (3), an automatic centering device (4) and a testing device (5), wherein the conveying device (2) is mounted on the upper side of a frame (1), a supporting bottom frame (6) is fixedly mounted on the left side of the frame (1), two supporting rods (7) are fixedly mounted on the supporting bottom frame (6), the two transverse clamping devices (3) are respectively symmetrically mounted on the left and right sides of the supporting bottom frame (6), the automatic centering device (4) is mounted on the transverse clamping device (3), the testing device (5) is mounted on the frame (1), and the automatic centering device (4) comprises: a fixed ring (41), a rotating ring (42), a first supporting seat (43), a second supporting seat (44) and a first limiting rod (45), the fixed ring (41) is mounted on the transverse support seat (43), the second supporting seat (44) and a first limiting rod (45), the fixed ring (41) is mounted on the transverse support seat (43), the second supporting seat (44) and the ... On the side of the clamping device (3) close to the center of the supporting bottom frame (6), the rotating ring (42) is rotatably connected to the fixed ring (41), the two first support seats (43) are hinged on the rotating ring (42) and are located on the same diameter of the rotating ring (42), the two second support seats (44) are hinged on the fixed ring (41) and are located on the same diameter of the fixed ring (41), one end of the first limit rod (45) is rotatably connected to the first support seat (43), and the other end of the first limit rod (45) is slidably connected to the second support seat (44), and the two first limit rods (45) are parallel to each other. The automatic centering device (4) also includes: upper and lower limit assemblies, and the upper and lower limit assemblies are installed on the fixed ring (41).

2. The performance testing equipment for a pressure-resistant centrifugal pump according to claim 1, characterized in that: The upper and lower limit assembly comprises: a servo electric cylinder (46), a third support seat (47), a fourth support seat (48) and a second limit rod (49); one end of the servo electric cylinder (46) is hinged on the transverse clamping device (3); the output end of the servo electric cylinder (46) is hinged on the rotating ring (42); the two third support seats (47) are hinged on the rotating ring (42) and are located on the same diameter of the rotating ring (42); the two fourth support seats (48) are hinged on the fixed ring (41) and are located on the same diameter of the fixed ring (41); one end of the second limit rod (49) is rotatably connected to the third support seat (47); the other end of the second limit rod (49) is slidably connected to the fourth support seat (48); the two second limit rods (49) are parallel to each other; the first limit rod (45) is closer to the center position of the supporting bottom frame (6) than the second limit rod (49).

3. The performance testing equipment for a pressure-resistant centrifugal pump according to claim 2, characterized in that: The transverse clamping device (3) comprises: a cylinder (31), a sliding plate (32), a moving interface (33) and a quick-release interface (34); one end of the two cylinders (31) is fixedly mounted on the supporting bottom frame (6); the sliding plate (32) is slidably connected to the supporting rod (7); the output end of the cylinder (31) is fixedly connected to a side of the sliding plate (32) away from the center of the supporting bottom frame (6); the moving interface (33) is fixedly mounted on the sliding plate (32); the quick-release interface (34) is threadedly connected to an end of the moving interface (33) close to the center of the supporting bottom frame (6); the fixed ring (41) is fixedly mounted on a side of the sliding plate (32) of the transverse clamping device (3) close to the center of the supporting bottom frame (6); and one end of the servo electric cylinder (46) is hinged to the sliding plate (32) of the transverse clamping device (3).

4. The performance testing equipment for a pressure-resistant centrifugal pump according to claim 3 is characterized in that: The transverse clamping device (3) further comprises: a telescopic component, wherein the telescopic component is mounted on the moving interface (33).

5. The performance testing equipment for a pressure-resistant centrifugal pump according to claim 4, characterized in that: The telescopic assembly comprises: a fixed interface (35), a fixed support frame (36), a connecting rod (37), a movable support frame (38), a bellows (39) and a spring (310), wherein the fixed interface (35) is fixedly mounted on the support base frame (6), the fixed support frame (36) is fixedly mounted on a side of the fixed interface (35) close to the center of the support base frame (6), one end of a plurality of connecting rods (37) is fixedly mounted on a side of the fixed support frame (36) close to the center of the support base frame (6), the movable support frame (38) is slidably connected to the connecting rod (37), and one end of the bellows (39) is fixedly mounted on the support base frame (6). The bellows (39) is connected to a side of the fixed support frame (36) close to the center of the support bottom frame (6); the other end of the bellows (39) is fixedly connected to a side of the movable support frame (38) away from the center of the support bottom frame (6); the spring (310) is arranged on the connecting rod (37); one end of the spring (310) is fixedly connected to a side of the movable support frame (38) close to the center of the support bottom frame (6); the other end of the spring (310) is fixedly connected to a side of the connecting rod (37) close to the center of the support bottom frame (6); and one end of the movable interface (33) away from the sliding plate (32) is fixedly connected to the movable support frame (38).

6. The performance testing equipment for a pressure-resistant centrifugal pump according to claim 5, characterized in that: The test device (5) comprises: a water reservoir (51), a test pipe (52), a flow meter (53) and an electric valve (54); the water reservoir (51) is fixedly mounted on the right side of the frame (1); one end of the test pipe (52) is fixedly mounted on a fixed interface (35) of a left lateral clamping device (3); the other end of the test pipe (52) is fixedly mounted on the upper side of the water reservoir (51); the flow meter (53) is mounted on the test pipe (52); one end of the electric valve (54) is fixedly mounted on the right side of the supporting bottom frame (6); and the other end of the electric valve (54) is fixedly mounted on the left side of the water reservoir (51).

7. The performance testing equipment for a pressure-resistant centrifugal pump according to claim 6, characterized in that: The testing device (5) further comprises: a circulation mechanism, the circulation mechanism being mounted on the frame (1), the circulation mechanism comprising: a cross bar (55), a slider (56), a connecting line (57), a cross plate (58) and a C-shaped frame (59), the cross bar (55) being fixedly mounted on the upper side of the frame (1), the slider (56) being slidably connected to the cross bar (55), one end of the connecting line (57) being fixedly mounted on the slider (56), the cross plate (58) being fixedly mounted on the other end of the connecting line (57), the C-shaped frame (59) being slidably connected to the lower side of the cross plate (58), a plurality of tension springs (510) being fixedly mounted on the cross plate (58), and one end of the tension spring (510) being away from the cross plate (58) being fixedly connected to the C-shaped frame (59).

8. The performance testing equipment for a pressure-resistant centrifugal pump according to claim 7, characterized in that: The circulation mechanism further comprises: a fixed extension plate (511), a sliding extension plate (512), a first connecting plate (513), a second connecting plate (514), a driving motor (515) and a threaded rod (516); the fixed extension plate (511) is fixedly mounted on the left side of the C-shaped frame (59); the two sliding extension plates (512) are slidably connected to the right side of the C-shaped frame (59); the fixed extension plate (511) and the right sliding extension plate (512) are both hingedly connected to two first connecting plates (513); the middle sides of the two second connecting plates (514) are hingedly connected to the middle sliding extension plate (512); and one end of the left first connecting plate (513) away from the fixed extension plate (511) is hingedly connected to the second connecting plate (514). The first connecting plate (513) is on the left side of the plate (514), one end of the first connecting plate (513) on the right side away from the right sliding extension plate (512) is hinged on the right side of the second connecting plate (514), the driving motor (515) is fixedly installed on the left side of the C-shaped frame (59), one end of the threaded rod (516) is fixedly connected to the output shaft of the driving motor (515), and the other end of the threaded rod (516) is rotatably connected to the C-shaped frame (59), the rightmost sliding extension plate (512) is threadedly connected to the middle side of the threaded rod (516) through a bracket, and the rear sides of the fixed extension plate (511) and the sliding extension plate (512) are fixedly installed with conductive contacts (520), and the conductive contacts (520) are electrically connected to the connecting wire (57).

9. The performance testing equipment for a pressure-resistant centrifugal pump according to claim 8, characterized in that: The circulation mechanism further comprises: a water delivery component, wherein the water delivery component is mounted on the supporting bottom frame (6).

10. The performance testing equipment for a pressure-resistant centrifugal pump according to claim 1, characterized in that: The conveying device (2) comprises: an extension frame (21), a linear module (22) and an electric hoist (23); the extension frame (21) is fixedly mounted on the upper side of the frame (1); the linear module (22) is fixedly mounted on the extension frame (21); and the electric hoist (23) is fixedly mounted on the output end of the linear module (22).

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