Immersion type multi-stage centrifugal pump testing tool

Abstract

The utility model discloses an immersion type multi-stage centrifugal pump testing tool, which relates to the technical field of centrifugal pumps and comprises a water tank and a pump body. According to the technical scheme, the plane where the tightening station is located is far away from the water tank, and the plane where the tightening station is located and the erecting plane of the supporting frame are arranged at intervals, so that when the pump body is erected on the water tank through the supporting frame for immersion testing, the tightening station is far away from the erecting plane of the supporting frame, and in the testing process, the pump body can be tightened conveniently. A worker can conveniently and finely adjust the tightening torque of the water pump pull rod and the nut at the tightening station, and the testing efficiency and quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal pumps, and particularly relates to a testing tooling for an immersed multistage centrifugal pump. Background Art

[0002] A centrifugal pump refers to a pump that conveys liquid by the centrifugal force generated when the impeller rotates. A multistage centrifugal pump is composed of two or more centrifugal pumps with the same function. In order to ensure quality, a multistage centrifugal pump needs to be tested before leaving the factory.

[0003] A multistage centrifugal pump is provided with a plurality of water pump tie rods. During the testing process, it is necessary to finely adjust the tightening torque of each water pump tie rod and the connecting nut to avoid problems such as noise and vibration of the water pump caused by the deflection of the pump shaft.

[0004] In the related art, since the pump shaft of the multistage centrifugal pump is coaxial with or directly fixedly connected to the motor shaft, the design of the coupling is omitted, resulting in a smaller installation space for the water pump tie rod and its connecting nut. During the immersed test, it is difficult for the staff to finely adjust the tightening torque, resulting in low test efficiency. Summary of the Utility Model

[0005] The main purpose of the utility model is to propose a testing tooling for an immersed multistage centrifugal pump, aiming to expand the installation space for the water pump tie rod and its connecting nut, facilitating the adjustment by the staff during the immersed test, and improving the test efficiency and quality.

[0006] To achieve the above object, the testing tooling for an immersed multistage centrifugal pump proposed by the utility model includes:

[0007] A water tank, on which a support frame is erected;

[0008] A pump body, on the side of which a plurality of tightening stations are arranged, and the pump body is inserted into the support frame;

[0009] Wherein, the plane where the tightening station is located is far from the water tank, and the plane where the tightening station is located is spaced from the erection plane of the support frame.

[0010] In an embodiment, a tray is erected on the support frame, and the pump body abuts against the tray.

[0011] In an embodiment, the support frame includes a bracket and a plurality of support rings. The plurality of support rings are spaced on the side of the bracket. The tray is erected on one of the support rings, and the pump body passes through the plurality of support rings and abuts against the tray.

[0012] In one embodiment, the tray includes a tray body and a plurality of first support portions, the plurality of first support portions are spaced apart on a side surface of the tray body, the support ring surrounds the tray body, and the plurality of first support portions are plugged into the support ring.

[0013] In one embodiment, a plurality of second support portions are spaced apart on the side surface of the tray, and the plurality of second support portions are mounted on the edge of the support ring.

[0014] In one embodiment, the support ring includes a ring body and a plurality of support grooves, the ring body is connected to the side of the bracket, the plurality of support grooves are spaced apart in the ring body, and one of the first support parts is inserted into one of the support grooves.

[0015] In one embodiment, a limiting portion is connected to a side surface of the support ring on a side of the bracket, and the bracket is mounted on the water tank through the limiting portion.

[0016] In one embodiment, the limiting portion includes a limiting body, a plug-in end and a holding portion, the limiting body is connected to the side of the support ring, the holding portion is connected to the surface of the limiting body, and the plug-in end is connected to the side of the limiting body away from the holding portion, and the plug-in end is plugged into the water tank.

[0017] In one embodiment, the water tank includes a water tank body and a cross frame, the cross frame is connected to the water tank body, the support frame is mounted on the cross frame, and the plug-in end is plugged into the cross frame.

[0018] In one embodiment, a rotation groove is provided on one side of the pump body close to the tightening station.

[0019] The technical solution of the utility model is that the plane where the tightening station is located is away from the water tank, and the plane where the tightening station is located is spaced apart from the erection plane of the support frame, so that when the pump body is erected on the water tank through the support frame for immersion testing, the tightening station is away from the erection plane of the support frame, so that during the test, the staff can conveniently fine-tune the tightening torque of the water pump pull rod and the nut at the tightening station, thereby improving the efficiency and quality of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1Structural schematic diagram of an embodiment of the immersion type multistage centrifugal pump testing tooling provided by the present utility model;

[0022] Figure 2 Structural schematic diagram of the pump body of an embodiment of the immersion type multistage centrifugal pump testing tooling provided by the present utility model;

[0023] Figure 3 Structural schematic diagram of the support frame of an embodiment of the immersion type multistage centrifugal pump testing tooling provided by the present utility model;

[0024] Figure 4 Structural schematic diagram of the tray of an embodiment of the immersion type multistage centrifugal pump testing tooling provided by the present utility model;

[0025] Figure 5 Structural schematic diagram of the pump body of another embodiment of the immersion type multistage centrifugal pump testing tooling provided by the present utility model;

[0026] Figure 6 Structural schematic diagram of the pump body of another embodiment of the immersion type multistage centrifugal pump testing tooling provided by the present utility model.

[0027] Explanation of the attached drawing reference numerals:

[0028] 100, immersion type multistage centrifugal pump testing tooling; 10, water tank; 11, water tank body; 12, cross frame; 13, limiting hole; 20, pump body; 21, motor; 22, pump body proper; 23, tightening station; 24, rotating groove; 30, support frame; 31, limiting part; 311, holding part; 312, inserting end; 313, limiting body; 32, support ring; 321, support groove; 322, ring body; 33, support; 34, tray; 341, second support part; 342, disc body; 343, first support part; 40, internal expansion type high-pressure quick connector; 41, hose.

[0029] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0031] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, then such directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture. If this specific posture changes, then the directional indications will also change accordingly.

[0032] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, or scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0033] The present utility model provides an immersion type multi-stage centrifugal pump testing tooling.

[0034] Please refer to Figure 2 and Figure 6 As shown, in an embodiment of the present utility model, the immersion type multi-stage centrifugal pump testing tooling includes:

[0035] A water tank 10, on which a support frame 30 is erected;

[0036] A pump body 20, on the side of which there are multiple tightening stations 23, and the pump body 20 is inserted into the support frame 30;

[0037] Among them, the plane where the tightening station 23 is located is far from the water tank 10, and the plane where the tightening station 23 is located is spaced from the erection plane of the support frame 30.

[0038] It should be noted that the pump body 20 includes a motor 21 and a pump body 22, and the output shaft of the motor 21 is coaxial or rigidly fixedly connected to the pump shaft of the pump body 22.

[0039] As Figure 1 and Figure 2 shown, the outlet end of the pump body 22 is connected with an internally expanding type high-pressure quick connector 40, and a plastic hose 41 is pre-connected to the internally expanding type high-pressure quick connector 40.

[0040] It should be noted that in the related art, during the immersion test, it is necessary to use a pull-out quick connector to connect to the outlet end of the pump body 22. However, due to the overall steel structure of the pull-out quick connector, its large size and mass make it difficult to test a large number of pump bodies 20. This greatly consumes the physical strength and energy of the testers, reducing the test efficiency.

[0041] It can be understood that the internal expansion high-pressure quick connector 40 is made of aluminum alloy and nylon, is small in size and light in weight, can be connected to the outlet end of the pump body 22 by plugging and unplugging, and can be sealed by turning a nylon wrench, which greatly reduces the test efficiency of testers during large-scale testing.

[0042] It can be understood that the plastic hose 41 is pre-connected to the internal expansion type high pressure quick connector 40, which saves the installation of the connecting pipe during the test process, improves the efficiency of replacement, and reduces the workload of the tester.

[0043] It can be understood that the pump body 20 is mounted on the water tank 10 , the water tank 10 stores liquid, and the pump body 20 is partially immersed in the liquid, so as to facilitate testing of the pump body 20 .

[0044] like Figure 6 As shown, multiple centrifugal pumps are stacked, and multiple water pump tie rods are arranged at intervals on the sides of the stacked multiple centrifugal pumps. The tightening station 23 is a boss, and the screw passes through the tightening station 23 and is connected to the water pump tie rod. A nut is connected to the end of the screw away from the water pump tie rod.

[0045] It can be understood that one end of the water pump pull rod is restricted to the side of the stacked centrifugal pump group, and the other end is connected to a nut, and the centrifugal pump group is adjusted by rotating the nut and adjusting the tightening torque.

[0046] It should be noted that, in order to expand the installation space between the nut and the screw, the boss is arranged to protrude outward.

[0047] The technical solution of the utility model is that the plane where the tightening station 23 is located is away from the water tank 10, and the plane where the tightening station 23 is located is spaced apart from the erection plane of the support frame 30, so that when the pump body 20 is erected on the water tank through the support frame 30 for immersion testing, the tightening station 23 is away from the erection plane of the support frame 30, so that during the test, the staff can conveniently fine-tune the tightening torque of the water pump rod and the nut at the tightening station 23, thereby improving the efficiency and quality of the test.

[0048] In one embodiment, a tray 34 is mounted on the support frame 30 , and the pump body 20 abuts against the tray 34 .

[0049] As shown Figure 2 As shown, the tray 34 is disposed within the support frame 30 and is supported by the support frame 30. The pump body 20 passes through the support frame 30 and is supported by the tray 34.

[0050] It should be noted that, in order to prevent the contact between the tray 34 and the pump body 20 from affecting the operation of the pump body 20, through holes are provided on the tray 34, and the through holes do not affect the support of the pump body 20 by the tray 34.

[0051] It can be understood that the tray 34 supports the pump body 20, so that the distance between the plane where the tightening station 23 is located and the tray 34 is greater than the distance between the installation plane of the support frame 30 and the tray 34. In this way, the installation and processing space of the tightening station 23 is expanded, facilitating the operation of the staff at the tightening station 23 during the immersion test to adjust the tightening torque between the water pump tie rod and the nut, improving the test efficiency and quality.

[0052] It can be understood that by adjusting the position of the tray 34 on the support frame 30, it is convenient to adapt to different stages of direct-connected multi-stage centrifugal pumps.

[0053] In an embodiment, the support frame 30 includes a bracket 33 and a plurality of support rings 32. The plurality of support rings 32 are spaced apart on the side surface of the bracket 33. The tray 34 is mounted on one of the support rings 32. The pump body 20 passes through the plurality of support rings 32 and abuts against the tray 34.

[0054] As shown Figure 5 and Figure 6 As shown, the multi-stage centrifugal pump is composed of a plurality of centrifugal pumps stacked together. Therefore, the lengths of multi-stage centrifugal pumps with different stages are different.

[0055] It can be understood that the plurality of support rings 32 are spaced apart on the bracket 33, and the tray 34 can be supported by any one of the support rings 32, so as to facilitate the adaptive adjustment and support of multi-stage centrifugal pumps with different stages.

[0056] As shown Figure 3 As shown, the bracket 33 is a vertical plate, and the plurality of support rings 32 are spaced apart on the side surface of the vertical plate, so that the plurality of support rings 32 can be concentrically spaced apart, avoiding interference with the support rings 32 during the installation of the pump body 20 and affecting the test quality.

[0057] It should be noted that the number of brackets 33 is multiple, the multiple brackets 33 are spaced apart, and the multiple brackets 33 are distributed on different sides of the support rings 32.

[0058] In one embodiment, if Figure 3 As shown, there are two brackets 33 , which are arranged opposite to each other, and the connection between the plurality of support rings 32 and the brackets 33 is stable.

[0059] In one embodiment, the tray 34 includes a tray body 342 and a plurality of first support portions 343 , wherein the plurality of first support portions 343 are spaced apart on the side of the tray body 342 , the support ring 34 surrounds the tray body 342 , and the plurality of first support portions 343 are inserted into the support ring 34 .

[0060] like Figures 2 to 4 As shown, the support ring 34 is disposed around the disk body 342 , and the first support portion 343 is plugged into the support ring 34 to ensure the support stability of the disk body 342 by the support ring 34 .

[0061] like Figure 4 As shown, the first support portion 343 is an L-shaped bending structure, and the bending portion of the first support portion 343 is inserted into the support ring 34 .

[0062] It can be understood that the plurality of first support portions 343 are distributed at intervals on the outer annular surface of the disk body 342 , and when the first support portion 343 passes through the support ring 32 , the first support portion 343 avoids the bracket 33 .

[0063] It should be noted that, in order to ensure the stability of supporting the pump body 20, a receiving groove is provided on the disc body 342, and the through hole penetrates the disc body 342. The edge of the disc body 342 wraps the pump body 20 and stably supports the pump body 20. At the same time, by setting the through hole, it avoids affecting the operation of the pump body 20.

[0064] In one embodiment, a plurality of second support portions 341 are spaced apart on the side surface of the tray 34 , and the plurality of second support portions 341 are mounted on the edge of the support ring 34 .

[0065] In order to further improve the support stability between the tray 34 and the support ring 342, the second support portion 341 is spaced apart on the outer annular surface of the tray body 342. When the support ring 34 is connected to the tray 342, the second support portion 341 is mounted on the upper edge of the support ring 34.

[0066] It can be understood that the support ring 34 is a ring plate and is spaced apart from the disk body 342. The second support portion 341 overlaps the upper edge of the support ring 34 to avoid affecting the support quality of the first support portion 343 on the disk body 342 due to the bracket 33, thereby helping to improve the support effect.

[0067] It should be noted that the planes where the multiple first supporting parts 343 are located are not coplanar with the planes where the multiple second supporting parts 341 are located, and the planes where the multiple second supporting parts 341 are located are far from the plane where the through hole is located.

[0068] It can be understood that the planes where the multiple first supporting parts 343 are located are not coplanar with the planes where the multiple second supporting parts 341 are located, which facilitates the insertion of the first supporting parts 343 into the support ring 34 and the lapping of the second supporting parts 341 with the upper edge of the support ring 34, improving the support stability of the support ring 34 for the disk body 342.

[0069] In an embodiment, the support ring 32 includes a ring body 322 and a plurality of support grooves 321. The ring body 322 is connected to the side surface of the bracket 33, and the plurality of support grooves 321 are arranged at intervals on the ring body 322. One first supporting part 343 is inserted into one support groove 321.

[0070] As Figure 3 shown, the plurality of support grooves 321 are arranged at intervals on the ring body 322, and the openings of the support grooves 321 face the limiting part 31.

[0071] As Figure 2 shown, the bent part of the first supporting part 343 passes through the support groove 321 and laps on the ring body 322.

[0072] It can be understood that the bent part of the first supporting part 343 is inserted into the support groove 321, and the displacement of the first supporting part 343 is restricted by the groove wall of the support groove 321, avoiding the disk body 342 moving relative to the ring body 322 when the disk body 342 is mounted on the ring body 322, which affects the stability of supporting the pump body 20.

[0073] In an embodiment, a limiting part 31 is connected to the side surface of the support ring 32 on the side of the bracket 33, and the bracket 33 is mounted on the water tank 10 through the limiting part 31.

[0074] It can be understood that the limiting part 31 on the side is used to limit the support frame 30, avoiding the support frame 30 completely falling into the water tank 10. And since the pump body 20 is inserted into the support frame 30, the pump body 20 is partially immersed in the liquid in the water tank 10, ensuring the normal progress of the test and protecting the motor 21 part of the pump body 20.

[0075] It should be noted that there are two limiting portions 31 , and the two limiting portions 31 are arranged opposite to each other on the sides of the supporting ring 32 , so as to ensure the stability of the supporting frame 30 when the supporting frame 30 is erected.

[0076] In one embodiment, the limiting portion 31 includes a limiting body 313, a plug-in end 312 and a holding portion 311, the limiting body 313 is connected to the side of the support ring 32, the holding portion 311 is connected to the surface of the limiting body 313, and the plug-in end 312 is connected to the side of the limiting body 313 away from the holding portion 311, and the plug-in end 312 is plugged into the water tank 10.

[0077] It is understandable that the holding portion 311 is connected to the limiting body 313 so that when carrying the support frame 30 , the tester can conveniently move the support frame 30 by holding the holding portion 311 .

[0078] It should be noted that the holding portion 311 is a bent piece, which is convenient for the tester to hold the holding portion 311 after bending his hand, so as to ensure stability when lifting and moving the support frame 30.

[0079] In one embodiment, the water tank 10 includes a water tank body 11 and a cross frame 12 , the cross frame 12 is connected to the water tank body 11 , the support frame 30 is mounted on the cross frame 12 , and the plug-in end 312 is plugged into the cross frame 12 .

[0080] It should be noted that, since a large number of multi-stage centrifugal pumps need to be tested, a plurality of the multi-stage centrifugal pumps are mounted on the water tank 10 , and the plurality of the multi-stage centrifugal pumps are arranged at intervals and tested simultaneously.

[0081] It is understandable that when the pump body 20 is working, the pump body 20 will produce relative movement, thus affecting the test of the rest of the pump body 20 .

[0082] It can be understood that when the limiting portion 31 is mounted on the cross frame 12, the plug-in end 312 is plugged into the cross frame 12, thereby limiting the displacement of the limiting portion 31, preventing the movement of the support frame 30, and avoiding mutual influence when the multiple pump bodies 20 are working, thereby ensuring the test quality.

[0083] like Figure 1 As shown, the cross frame 12 is provided with a limiting hole 13 , and the plug-in end 312 is plugged into the limiting hole 13 to prevent relative displacement between the limiting portion 31 and the cross frame 12 .

[0084] In one embodiment, the number of the cross frames 12 is two, and the two cross frames 12 are arranged at intervals on the water tank pump body 11. When the support frame 30 is mounted on the cross frames 12, the support 33 and the support ring 32 are arranged between the two cross frames 12, and the two limiting parts 31 are respectively mounted on the two cross frames 12, and the insertion ends 312 are respectively inserted into the corresponding limiting holes 13.

[0085] It can be understood that the two cross frames 12 respectively mount the two limiting parts 31 to ensure the stability of supporting the support frame 30 and the pump body 20, and improve the test efficiency and stability.

[0086] In one embodiment, a rotating groove 24 is provided on one side of the pump body 20 close to the tightening station 23.

[0087] As Figure 2 shown, by providing the rotating groove 24 on the pump body 20, and the rotating groove 24 is located on the side of the tightening station 23 away from the water pump pull rod.

[0088] It can be understood that a nut is arranged in the rotating groove 23, and the nut is connected to a screw rod. By providing the rotating groove 24, the rotating installation space of the nut is enlarged, so as to facilitate adjusting the acting force of the water pump pull rod on the centrifugal pump when testing the pump body.

[0089] The above are only exemplary embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural transformations made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An immersion multi-stage centrifugal pump testing tooling, characterized in that, include: A water tank, wherein a support frame is mounted on the water tank; A pump body, wherein a plurality of tightening stations are arranged on the side of the pump body, and the pump body is plugged into the support frame; Wherein, the plane where the tightening station is located is far away from the water tank, and the plane where the tightening station is located is spaced apart from the erection plane of the support frame.

2. The immersion multi-stage centrifugal pump testing tooling according to claim 1, characterized in that, A tray is mounted on the support frame, and the pump body abuts against the tray.

3. The immersion multi-stage centrifugal pump test tooling according to claim 2, characterized in that The support frame includes a support and a plurality of support rings, wherein the plurality of support rings are arranged at intervals on the side of the support, the tray is mounted on one of the support rings, and the pump body is passed through the plurality of support rings and abuts against the tray.

4. The immersion multi-stage centrifugal pump testing tooling according to claim 3, characterized in that, The tray includes a tray body and a plurality of first supporting parts, wherein the plurality of first supporting parts are arranged at intervals on the side of the tray body, the supporting ring surrounds the tray body, and the plurality of first supporting parts are inserted into the supporting ring.

5. The immersion multi-stage centrifugal pump testing tooling according to claim 4, characterized in that, A plurality of second support parts are also arranged at intervals on the side surface of the tray, and the plurality of second support parts are mounted on the edge of the support ring.

6. The immersion multi-stage centrifugal pump test tooling according to claim 4, characterized in that, The support ring includes a ring body and a plurality of support grooves. The ring body is connected to the side of the bracket. The plurality of support grooves are arranged at intervals on the ring body. One of the first support parts is inserted into one of the support grooves.

7. The immersion multi-stage centrifugal pump testing tooling according to claim 4, characterized in that, A limiting portion is connected to a side surface of the support ring at a side of the bracket, and the bracket is mounted on the water tank through the limiting portion.

8. The immersion multi-stage centrifugal pump testing tooling according to claim 7, characterized in that, The limiting part includes a limiting body, a plug-in end and a holding part, the limiting body is connected to the side of the support ring, the holding part is connected to the surface of the limiting body, and the plug-in end is connected to the side of the limiting body away from the holding part, and the plug-in end is plugged into the water tank.

9. The immersion multi-stage centrifugal pump testing tooling according to claim 8, wherein, The water tank comprises a water tank body and a cross frame, the cross frame is connected to the water tank body, the support frame is mounted on the cross frame, and the plug-in end is plugged into the cross frame.

10. The immersion multi-stage centrifugal pump testing tooling according to claim 1, wherein A rotation groove is provided on one side of the pump body close to the tightening station.

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