A pump shell pressure resistance performance testing device

Abstract

The utility model discloses a kind of pump shell pressure resistance performance testing devices, belong to pump shell test technical field, including the test water storage cylinder of upper surface opening, rack is set above test water storage cylinder, several bolts are threadedly connected on the rack one and form detachable connection between bolt one and test water storage cylinder, the number of expansion piece is several and all are fixed on the upper surface of rack, the expansion piece telescopic end is laid down and fixedly connected with pump shell clamping shell, pump shell clamping unit is set on pump shell clamping shell, for clamping and fixing to pump shell;By setting multiple expansion piece cooperation multiple pump shell clamping shell use, multiple pump shell synchronous pressure resistance test can be realized, ruler contrast test, test efficiency is greatly improved, adaptive batch operation detection scene, and pressure resistance performance test under different depth water pressure condition to the same batch of pump shell can be carried out, further guarantee the diversification of pressure resistance performance test.

Description

Technical Field

[0001] This utility model belongs to the field of pump casing testing technology, specifically relating to a pump casing pressure resistance performance testing device. Background Technology

[0002] The pump casing is a core component of fluid machinery such as centrifugal pumps. Its main functions are to house and protect internal components, withstand pressure, guide fluid flow, and prevent leakage. The design of the pump casing directly affects the pump's efficiency and durability; therefore, it is necessary to conduct performance tests on the pump casing, including pressure resistance and corrosion resistance.

[0003] One of the tests is to immerse the pump casing in water and check its underwater pressure resistance.

[0004] Existing pressure resistance testing equipment has limited testing capacity, allowing only one pump casing to be tested at a time. It cannot conduct comparative tests on multiple pump casings simultaneously, resulting in low testing efficiency and difficulty in meeting the testing needs of mass production. Furthermore, it lacks a targeted and effective fixing structure, making it easy for the pump casing to shift or shake during the test. This not only affects the accuracy of the test results but may also damage the pump casing during the test, increasing testing costs.

[0005] Therefore, we propose a pump casing pressure resistance testing device. Utility Model Content

[0006] The purpose of this invention is to provide a pump casing pressure resistance performance testing device to solve the problems mentioned in the background art. The existing pressure resistance performance testing devices have limited testing capacity, can only test one pump casing at a time, and cannot conduct comparative tests on multiple pump casings simultaneously, resulting in low testing efficiency and difficulty in meeting the needs of mass production testing. Furthermore, they lack a targeted and effective fixing structure, and the pump casing is prone to displacement and shaking during the testing process, which not only affects the accuracy of the test results but may also lead to damage to the pump casing during the testing process, increasing testing costs.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a pump casing pressure resistance testing device, comprising a test water storage cylinder with an opening on the upper surface;

[0008] A frame is set above the test water storage cylinder. Several bolts are threaded onto the frame, and a detachable connection is formed between the frame and the test water storage cylinder through the bolts.

[0009] There are several telescopic components, all of which are fixed on the upper surface of the frame. The telescopic ends of the telescopic components are arranged downwards and are fixedly connected to the pump housing clamping housing.

[0010] The pump casing clamping unit is installed on the pump casing clamping housing and is used to clamp and fix the pump casing.

[0011] The pump housing clamping unit includes a power component fixed to the side of the pump housing clamping housing, a bidirectional screw rotatably connected to the pump housing clamping housing, two threaded brackets threaded to the outer surfaces of the two threads of the bidirectional screw, and two pump housing clamps fixed to one side of the two threaded brackets. The output end of the power component is fixedly connected to one end of the bidirectional screw.

[0012] The pump casing support plate is movably installed below the pump casing clamping housing to support the pump casing and cooperate with the pump casing clamping unit to achieve stable clamping of the pump casing.

[0013] The pump casing support plate has several inner plates fixedly connected to its side, and the surface of the pump casing clamping shell has several outer cylinders for the inner plates to slide on.

[0014] By adopting the above solution, multiple telescopic components can be used in conjunction with multiple pump casing clamps to achieve simultaneous pressure resistance testing of multiple pump casings and ruler comparison testing, which greatly improves testing efficiency and is suitable for batch operation testing scenarios. It can also perform pressure resistance performance testing on pump casings of the same batch under different water pressure conditions, further ensuring the diversity of pressure resistance performance testing. By setting up pump casing clamping units in conjunction with pump casing support plates, the pump casings can be effectively fixed and clamped to prevent displacement and misalignment during testing, ensuring no displacement or shaking, guaranteeing the accuracy of test results, and avoiding damage caused by collisions. In addition, the height of the pump casing support plate is adjustable to accommodate pump casings of different sizes and specifications.

[0015] In a preferred embodiment, a plurality of glass observation plates are fixedly connected to the test water storage cylinder, a scale is fixedly connected to the surface of the glass observation plates, and an indicator needle that works in conjunction with the scale is fixedly connected to the surface of the pump casing support plate.

[0016] Using the above scheme, the glass observation plate is made of high-strength transparent glass, which makes it easy for testers to directly observe the sealing status of the underwater pump casing and whether there is any leakage. The scale and indicator needle work together to accurately read the immersion depth of the pump casing, ensuring that the immersion depth is consistent when testing multiple pump casings, thus ensuring the fairness of the comparative test. At the same time, it can record the performance of the pump casing under different water pressures at different immersion depths.

[0017] In a preferred embodiment, a plurality of alignment rods are fixedly connected to the surface of the test water storage cylinder, and a plurality of limiting plates are fixedly connected to the inner wall of the frame. The limiting plates are fitted and arranged at the surface position of the test water storage cylinder, and the limiting plates are provided with alignment holes for the alignment rods to be engaged.

[0018] Using the above solution, the alignment rod and alignment hole can achieve rapid positioning and installation of the frame and the test water storage tank, avoiding misalignment during installation. This ensures that the telescopic parts, pump housing, clamping housing, and other components on the frame accurately correspond to the effective test area of ​​the test water storage tank. The limiting plate fits against the surface of the test water storage tank, further enhancing the stability of the connection between the frame and the test water storage tank, dispersing the force on bolt 1, and preventing deformation of the connection after long-term use.

[0019] In one preferred embodiment, a plurality of guide rods are slidably connected to the frame. The guide rods are arranged longitudinally and their bottom ends are fixedly connected to the surface of the pump casing clamping housing at corresponding positions.

[0020] With the above scheme, the guide rod is set longitudinally parallel to the telescopic component, providing guidance for the lifting and lowering movement of the pump casing clamping the housing. This prevents the pump casing clamping the housing from deflecting or shaking when the telescopic component is driven, ensuring that the pump casing can be smoothly and vertically immersed in water or detached from the water surface, ensuring the stability of the clamped pump casing posture and improving the accuracy of the test.

[0021] In a preferred embodiment, a plurality of guide rods are fixedly connected to the inner wall of the pump housing clamping housing, and the threaded frame is slidably connected to the outer surface of the plurality of guide rods.

[0022] With the above scheme, the guide rod two is set parallel to the bidirectional screw, which guides and limits the movement of the threaded frame, preventing the threaded frame from rotating with the bidirectional screw, ensuring that the two threaded frames always move in parallel, thereby ensuring that the clamping force of the pump casing clamp on the pump casing is evenly distributed, and preventing the pump casing from being damaged due to uneven clamping force.

[0023] In a preferred embodiment, anti-slip pads are affixed to the side of the pump housing clamp, with two anti-slip pads on the same pump housing clamp arranged opposite each other.

[0024] Using the above solution, the anti-slip pad is made of elastic and wear-resistant material, which can increase the friction between the pump housing clamp and the pump housing surface, further improve the clamping stability, prevent the pump housing from slipping off during the test, and the elastic material can play a buffering role, avoiding hard contact between the pump housing clamp and the pump housing, which would cause scratches and deformation on the pump housing surface, and protect the integrity of the test sample.

[0025] In a preferred embodiment, the outer cylinder is threadedly connected to a bolt, and the inner plate has several threaded grooves on its side for the bolt to be screwed in.

[0026] Using the above scheme, the inner plate can slide and adjust its height inside the outer cylinder. After the pump casing support plate is adjusted to the height that matches the pump casing, the bolt 2 is screwed into the corresponding threaded groove to fix the inner plate and the outer cylinder, thereby locking the height of the pump casing support plate and preventing the support plate from shifting due to water flow impact or the weight of the pump casing during the test, thus ensuring the stability of the double fixing structure.

[0027] Compared with the prior art, the beneficial effects of this utility model are:

[0028] This pump casing pressure resistance testing device uses multiple telescopic components to clamp multiple pump casings, enabling simultaneous pressure resistance testing of multiple pump casings and ruler comparison testing, significantly improving testing efficiency. It is suitable for batch operation testing scenarios and can also perform pressure resistance testing on the same batch of pump casings under different water pressure conditions, further ensuring the diversity of pressure resistance testing.

[0029] This pump casing pressure resistance testing device uses a pump casing clamping unit in conjunction with a pump casing support plate to effectively fix and clamp the pump casing, preventing it from shifting or misaligning during testing, ensuring no displacement or shaking, guaranteeing the accuracy of test results, and avoiding damage caused by collisions with odors. The pump casing support plate has an adjustable height design to accommodate pump casings of different sizes and specifications. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the structure of the test water storage cylinder and frame explosion of this utility model;

[0032] Figure 3 This is a schematic diagram of the frame structure of this utility model;

[0033] Figure 4 This is a schematic diagram of the pump casing clamping housing of this utility model;

[0034] Figure 5 This is a schematic diagram of the cross-sectional structure of the pump casing clamping housing of this utility model;

[0035] Figure 6 This is a schematic diagram of the outer cylinder, inner plate, and bolts of this utility model after an explosion.

[0036] In the diagram: 1. Test water storage cylinder; 2. Frame; 3. Bolt 1; 4. Telescopic component; 5. Pump casing clamping housing; 6. Power component; 7. Bidirectional screw; 8. Threaded bracket; 9. Pump casing clamp; 10. Outer cylinder; 11. Inner plate; 12. Pump casing support plate; 13. Glass observation plate; 14. Scale; 15. Indicator needle; 16. Alignment lever; 17. Limiting plate; 18. Guide rod 1; 19. Guide rod 2; 20. Anti-slip pad; 21. Bolt 2. Detailed Implementation

[0037] Please see Figure 1-6 This utility model provides a pump casing pressure resistance test device, including a test water storage cylinder 1 with an opening on the upper surface;

[0038] The frame 2 is set above the test water storage cylinder 1. Several bolts 3 are threaded on the frame 2 and a detachable connection is formed between the frame 2 and the test water storage cylinder 1 through the bolts 3.

[0039] There are several telescopic components 4, all of which are fixed on the upper surface of the frame 2. The telescopic ends of the telescopic components 4 are arranged downward and are fixedly connected to the pump casing clamping housing 5.

[0040] The pump casing clamping unit is installed on the pump casing clamping housing 5 and is used to clamp and fix the pump casing.

[0041] The pump casing clamping unit includes a power component 6 fixed to the side of the pump casing clamping housing 5, a bidirectional screw 7 rotatably connected to the pump casing clamping housing 5, two threaded brackets 8 threadedly connected to the outer surfaces of the two threads of the bidirectional screw 7, and two pump casing clamps 9 fixed to one side of the two threaded brackets 8. The output end of the power component 6 is fixedly connected to one end of the bidirectional screw 7.

[0042] The pump casing support plate 12 is movably disposed below the pump casing clamping housing 5, and is used to support the pump casing and cooperate with the pump casing clamping unit to achieve stable clamping of the pump casing.

[0043] Among them, several inner plates 11 are fixedly connected to the side of the pump casing support plate 12, and several outer cylinders 10 for sliding of the inner plates 11 are fixedly connected to the surface of the pump casing clamping shell 5.

[0044] In this embodiment, the telescopic component 4 is specifically selected from either an electric telescopic rod or a hydraulic telescopic rod, and the power component 6 is specifically selected from either a servo motor or a stepper motor.

[0045] By setting multiple telescopic components 4 in conjunction with multiple pump casing clamping housings 5, multiple pump casings can be simultaneously pressure tested and compared with a ruler, greatly improving testing efficiency and adapting to batch operation testing scenarios. It can also perform pressure resistance tests on pump casings of the same batch under different water pressure conditions, further ensuring the diversity of pressure resistance tests. By setting the pump casing clamping unit in conjunction with the pump casing support plate 12, the pump casing can be effectively fixed and clamped to prevent the pump casing from shifting or misaligning during the test, ensuring no displacement or shaking, ensuring the accuracy of test results, and avoiding damage caused by collisions. The height of the pump casing support plate 12 is adjustable to adapt to pump casings of different sizes and specifications.

[0046] Several glass observation plates 13 are fixedly connected to the water storage cylinder 1. A scale 14 is fixedly connected to the surface of the glass observation plate 13. An indicator needle 15 that works with the scale 14 is fixedly connected to the surface of the pump casing support plate 12. The glass observation plate 13 is made of high-strength transparent glass, which makes it easy for testers to directly observe the sealing status of the underwater pump casing and whether there is any leakage. The scale 14 and the indicator needle 15 work together to accurately read the immersion depth of the pump casing, ensuring that the immersion depth of multiple pump casings is consistent during testing, ensuring the fairness of the comparative test. At the same time, it can record the performance of the pump casing under different pressures and immersion depths corresponding to different water pressures.

[0047] Several alignment rods 16 are fixedly connected to the surface of the test water storage cylinder 1, and several limiting plates 17 are fixedly connected to the inner wall of the frame 2. The limiting plates 17 are fitted and arranged on the surface of the test water storage cylinder 1. The limiting plates 17 have alignment holes for the alignment rods 16 to be inserted. The cooperation between the alignment rods 16 and the alignment holes can realize the quick positioning and installation of the frame 2 and the test water storage cylinder 1, avoid the offset during installation, and ensure that the telescopic parts 4, pump housing clamping housing 5 and other components on the frame 2 are accurately aligned with the effective testing area of ​​the test water storage cylinder 1. The limiting plates 17 fit the surface of the test water storage cylinder 1, further enhancing the stability of the connection between the frame 2 and the test water storage cylinder 1, dispersing the force on the bolts 3, and preventing deformation of the connection parts after long-term use.

[0048] Several guide rods 18 are slidably connected on the frame 2. The guide rods 18 are arranged longitudinally and their bottom ends are fixedly connected to the surface of the pump housing clamping housing 5 at the corresponding positions. The guide rods 18 are arranged longitudinally and parallel to the telescopic component 4 to provide guidance for the lifting and lowering movement of the pump housing clamping housing 5. This prevents the pump housing clamping housing 5 from deflecting or shaking when the telescopic component 4 is driven, ensuring that the pump housing can be smoothly and vertically immersed in water or detached from the water surface, ensuring the stability of the clamped pump housing posture and improving the accuracy of the test.

[0049] Several guide rods 19 are fixedly connected to the inner wall of the pump casing clamping housing 5. The threaded frame 8 is slidably connected to the outer surface of the guide rods 19. The guide rods 19 are arranged parallel to the bidirectional screw 7, which guides and limits the movement of the threaded frame 8, preventing the threaded frame 8 from rotating with the bidirectional screw 7. This ensures that the two threaded frames 8 always move in parallel, thereby ensuring that the clamping force of the pump casing clamp 9 on the pump casing is evenly distributed and preventing damage to the pump casing due to uneven clamping force.

[0050] Anti-slip pads 20 are attached to the side of the pump housing clamp 9. Two anti-slip pads 20 on the same pump housing clamp 5 are arranged opposite each other. The anti-slip pads 20 are made of elastic and wear-resistant material, which can increase the friction between the pump housing clamp 9 and the surface of the pump housing, further improve the clamping stability, prevent the pump housing from slipping off during the test, and the elastic material can play a buffering role to avoid hard contact between the pump housing clamp 9 and the pump housing, which would cause scratches or deformation on the surface of the pump housing and protect the integrity of the test sample.

[0051] The outer cylinder 10 is threaded with bolt 21 on its side. The inner plate 11 has several threaded grooves on its side for bolt 21 to be screwed in. The inner plate 11 can slide inside the outer cylinder 10 to adjust its height. When the pump housing support plate 12 is adjusted to match the height of the pump housing, bolt 21 is screwed into the corresponding threaded groove to fix the inner plate 11 and the outer cylinder 10, thereby locking the height of the pump housing support plate 12 and preventing the support plate from shifting due to water flow impact or pump housing gravity during the test, thus ensuring the stability of the double fixing structure.

[0052] When using:

[0053] First, inject an appropriate amount of test water into the test water storage cylinder 1, and adjust the status of each component according to the number and size of the pump casing to be tested;

[0054] Loosen bolt 21, slide inner plate 11 to adjust the height of pump housing support plate 12 so that the bottom support plate matches the height of the pump housing. After adjustment, tighten bolt 21 to lock the position of the support plate.

[0055] Place the pump casing to be tested on the pump casing support plate 12, start the power unit 6, the power unit 6 drives the bidirectional screw 7 to rotate, the bidirectional screw 7 drives the two threaded brackets 8 to move towards each other along the guide rod 19, and then the pump casing is clamped and fixed by the pump casing clamp 9 and the anti-slip pad 20. Then the pump casings at other positions are clamped and fixed in sequence. After they are fixed, stop the power unit 6.

[0056] Start the telescopic component 4. The telescopic component 4 drives the pump casing clamping housing 5 to descend longitudinally along the guide rod 18, immersing the clamped and fixed pump casing into the water of the test water storage cylinder 1. The immersion depth of each pump casing is controlled by the indicator needle 15 and the scale 14.

[0057] During the test, the sealing status of each pump casing is observed through the glass observation plate 13 to check whether there are bubbles to determine whether there is leakage, and the immersion depth and test time corresponding to the scale 14 are recorded.

[0058] After the test is completed, start the telescopic component 4 to drive the pump casing clamp 5 to rise, so that the pump casing is removed from the water surface. Then turn off the power component 6, and the bidirectional screw 7 rotates in the opposite direction to drive the pump casing clamp 9 to loosen. Remove the pump casing to complete the test.

[0059] If maintenance or water replacement is required, loosen bolt 3 to separate the frame 2 from the test water tank 1 for cleaning or component repair.

Claims

1. A pump casing pressure resistance testing device, characterized in that: The test water storage cylinder (1) includes an opening on the upper surface; The frame (2) is set above the test water storage cylinder (1). Several bolts (3) are threaded on the frame (2) and a detachable connection is formed between the bolts (3) and the test water storage cylinder (1). There are several telescopic components (4) and they are all fixed on the upper surface of the frame (2). The telescopic ends of the telescopic components (4) are arranged downward and fixedly connected to the pump casing clamping housing (5). The pump casing clamping unit is installed on the pump casing clamping housing (5) and is used to clamp and fix the pump casing. The pump housing clamping unit includes a power component (6) fixed to the side of the pump housing clamping housing (5), a bidirectional screw (7) rotatably connected inside the pump housing clamping housing (5), two threaded brackets (8) threadedly connected to the outer surfaces of the two threads of the bidirectional screw (7), and two pump housing clamps (9) fixed to one side of the two threaded brackets (8). The output end of the power component (6) is fixedly connected to one end of the bidirectional screw (7). The pump casing support plate (12) is movably set below the pump casing clamping housing (5) to support the pump casing and cooperate with the pump casing clamping unit to achieve stable clamping of the pump casing. Among them, the side of the pump housing support plate (12) is fixedly connected with several inner plates (11), and the surface of the pump housing clamping shell (5) is fixedly connected with several outer cylinders (10) for the inner plates (11) to slide.

2. The pump casing pressure resistance testing device according to claim 1, characterized in that: Several glass observation plates (13) are fixedly connected to the test water storage cylinder (1). A scale (14) is fixedly connected to the surface of the glass observation plate (13). An indicator needle (15) that works with the scale (14) is fixedly connected to the surface of the pump housing support plate (12).

3. The pump casing pressure resistance testing device according to claim 1, characterized in that: The surface of the test water storage cylinder (1) is fixedly connected with several alignment rods (16), and the inner wall of the frame (2) is fixedly connected with several limiting plates (17). The limiting plates (17) are attached to the surface of the test water storage cylinder (1), and the limiting plates (17) are provided with alignment holes for the alignment rods (16) to be inserted.

4. The pump casing pressure resistance testing device according to claim 1, characterized in that: Several guide rods (18) are slidably connected on the frame (2). The guide rods (18) are arranged longitudinally and the bottom end of the guide rods (18) is fixedly connected to the surface of the pump housing clamping shell (5) at the corresponding position.

5. The pump casing pressure resistance testing device according to claim 1, characterized in that: The pump housing clamping housing (5) has several guide rods (19) fixedly connected to its inner wall, and the threaded frame (8) is slidably connected to the outer surface of the guide rods (19).

6. The pump casing pressure resistance testing device according to claim 1, characterized in that: The side of the pump housing clamp (9) is covered with anti-slip pads (20), and two anti-slip pads (20) on the same pump housing clamp (5) are arranged opposite each other.

7. The pump casing pressure resistance testing device according to claim 1, characterized in that: The outer cylinder (10) is threaded with bolt 2 (21) on its side, and the inner plate (11) has several threaded grooves on its side for bolt 2 (21) to be screwed in.

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