Fixing device for submersible pump shell sealing performance test

Abstract

The utility model relates to the technical field of pump shell sealing performance testing, and discloses a fixing device for submersible pump shell sealing performance testing, which comprises a supporting structure, a pump shell, a plurality of pressing and fixing structures, a sealing structure and a communicating pipe, the sealing structure is fixed at the front end of the supporting structure, and the pressing and fixing structures are positioned beside the sealing structure. The pump shell is fixed to the sealing structure through a plurality of pressing and fixing structures, and the communicating pipe is fixed to the rear end of the supporting structure. The sealing structure comprises a sealing seat, a sealing cavity and a sealing groove, the sealing cavity is arranged in the center of the sealing seat in a sinking mode, a circle of sealing groove is formed in the sealing seat along the edge of the sealing cavity, and the bottom end of the pump shell is arranged in the sealing groove. The front end of the communicating pipe communicates with the sealing cavity. The supporting structure comprises a base, a supporting plate and a rib plate, the supporting plate is vertically fixed to the upper end of the base, and the rib plate is arranged between the rear end of the supporting plate and the upper end of the base. According to the utility model, the submersible pump shell can be conveniently fixed and subjected to a sealing test, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pump shell sealing performance testing, in particular to a fixing device for testing the sealing performance of a submersible pump shell. Background Technique

[0002] The pump shell of a submersible pump has a complex structure, mostly irregular curved surfaces, and a narrow space. Leakage is likely to occur on the pump shell, and there are often more than one position where leakage may occur, which will affect the sealing performance of the submersible pump shell during later use.

[0003] In the prior art, there are also some pump shell sealing performance testing devices. For example, the Chinese utility model patent with the application number CN201521010260.3 and the name of an experimental device for measuring the reverse sealing performance of a pump housing can accurately and intuitively measure the leakage amount of the pump housing, that is, the reverse sealing performance. However, it is mainly to solve the problem that it is difficult to accurately measure the reverse sealing performance of a complex cavity housing, and the pump shell is set inside the test oil tank for testing.

[0004] Another example is the Chinese utility model patent with the application number CN201720464841.7 and the name of a pump shell sealing detection device. It can automatically complete the sealing of the pump shell and automatically realize its airtightness detection, improve the detection efficiency, and reduce the labor intensity of operators. However, the test pump shell it aims at has its structural particularity. Content of the Utility Model

[0005] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a fixing device for testing the sealing performance of a submersible pump shell different from the existing structure, which can conveniently fix the submersible pump shell and carry out the sealing performance test, and improve the detection efficiency.

[0006] The utility model is realized by adopting the following technical scheme: A fixing device for testing the sealing performance of a submersible pump shell includes a support structure, a pump shell, a pressing and fixing structure, a sealing structure and a connecting pipe. The sealing structure is fixed at the front end of the support structure. A plurality of pressing and fixing structures are located beside the sealing structure. The pump shell is fixed on the sealing structure through a plurality of pressing and fixing structures. The connecting pipe is fixed at the rear end of the support structure. The sealing structure includes a sealing seat, a sealing cavity and a sealing groove. The sealing cavity is sunken and arranged in the center of the sealing seat. A sealing groove is arranged along the edge of the sealing cavity on the sealing seat. The bottom end of the pump shell is arranged in the sealing groove. The front end of the connecting pipe is communicated with the sealing cavity.

[0007] Further, the support structure includes a base, a support plate and a rib plate. The support plate is vertically fixed at the upper end of the base. The rib plate is arranged between the rear end of the support plate and the upper end of the base.

[0008] Further, the pressing and fixing structure includes a rotary cylinder base, a downward pressing cylinder, a connecting rod, and a pressing column. The rotary cylinder base is fixed on the support plate by bolts. The downward pressing cylinder is located on the rotary cylinder base. One end of the connecting rod is fixed on the driving end of the downward pressing cylinder, and a pressing column is installed at the other end of the connecting rod.

[0009] Further, the pump housing includes a housing, a wire hole, and a liquid outlet. The liquid outlet is arranged at the top end of the housing, and the wire hole is arranged at the side end of the housing.

[0010] Further, a liquid outlet sealing structure is arranged in the liquid outlet for sealing it.

[0011] Further, the liquid outlet sealing structure includes a sleeve, a sleeve groove, a sleeve gasket, and a connecting bolt. The sleeve groove is arranged at the upper part of the sleeve. The sleeve gasket is sleeved in the sleeve groove. The connecting bolt is arranged in the central counterbore at the upper end of the sleeve.

[0012] Further, a fixing groove is arranged in the sealing cavity. A threaded hole is arranged at the center of the fixing groove. The bottom end of the sleeve is arranged in the fixing groove. The liquid outlet sealing structure is connected to the sealing structure by the cooperation of the connecting bolt and the threaded hole in the fixing groove.

[0013] Further, the outer shape of the sleeve is adapted to the inner shape of the liquid outlet.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. A fixing device for testing the sealing performance of a submersible pump housing of the present utility model can automatically press and fix the pump housing on the sealing structure by using the pressing and fixing structure, block the liquid outlet of the pump housing by using the liquid outlet sealing structure, and pressurize the sealing cavity and the inside of the pump housing through the communicating pipe, which can conveniently carry out the fixing and sealing performance test of the submersible pump housing and improve the detection efficiency.

[0016] 2. A fixing device for testing the sealing performance of a submersible pump housing of the present utility model uses the rotary cylinder base and the downward pressing cylinder to drive the pressing column at the end of the connecting rod to press and fix the pump housing through automatic rotation and downward pressing, so that the bottom end of the pump housing is pressed and fixed in the sealing groove, which can automatically press and fix the pump housing on the sealing structure and maintain the sealing performance therebetween.

[0017] 3. A fixing device for testing the sealing performance of a submersible pump housing of the present utility model has a liquid outlet sealing structure arranged in the liquid outlet. The liquid outlet sealing structure is connected to the sealing structure by the cooperation of the connecting bolt and the threaded hole in the fixing groove to seal the liquid outlet. Description of the Drawings

[0018] Figure 1 is the schematic diagram of the overall structure of the present utility model Figure 1 ;

[0019] Figure 2 is the schematic diagram of the overall structure of the present utility model Figure 2 ;

[0020] Figure 3 is the schematic structural diagram of the sealing structure in the present utility model;

[0021] Figure 4 is the top view of the pump housing when the pressing and fixing structure in the present utility model fixes the pump housing;

[0022] Figure 5 is the three-dimensional structural schematic diagram of the pressing and fixing structure fixing the pump housing in the present utility model;

[0023] Figure 6 is the structural schematic diagram of the pump housing in the present utility model Figure 1 ;

[0024] Figure 7 is the structural schematic diagram of the pump housing in the present utility model Figure 2 ;

[0025] Figure 8 is the schematic structural diagram of the liquid outlet sealing structure in the present utility model.

[0026] In the figure: support structure - 1; pressing and fixing structure - 2; sealing structure - 3; pump housing - 4; connecting pipe - 5; liquid outlet sealing structure - 6; base - 11; support plate - 12; rib plate - 13; rotary cylinder seat - 21; downward pressing cylinder - 22; connecting rod - 23; pressing column - 24; sealing seat - 31; sealing cavity - 32; fixing groove - 33; sealing groove - 34; housing - 41; wire hole - 42; liquid outlet - 43; sleeve - 61; sleeve groove - 62; sleeve washer - 63; connecting bolt - 64. Specific embodiments

[0027] The following uses specific specific examples to illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0028] The purpose of the present utility model is to provide a fixing device for testing the sealing performance of a submersible pump housing in view of the defects of the prior art.

[0029] Embodiment 1

[0030] This embodiment provides a fixing device for testing the sealing performance of a submersible pump housing. Refer toFigure 1 , Figure 2 As shown in Figure 2 , it includes a support structure 1, a pressing and fixing structure 2, a sealing structure 3, a pump housing 4 and a connecting pipe 5. The sealing structure 3 is fixed at the front end of the support structure 1. Three pressing and fixing structures 2 are located beside the sealing structure 3. The pump housing 4 is fixed on the sealing structure 3 through the three pressing and fixing structures 2. The connecting pipe 5 is fixed at the rear end of the support structure 1.

[0031] Referring to Figure 3 As shown in Figure 3 , the sealing structure 3 among them includes a sealing seat 31, a sealing cavity 32 and a sealing groove 34. The sealing cavity 32 is sunken and arranged in the center of the sealing seat 31. The front end of the connecting pipe 5 is communicated with the sealing cavity 32. A sealing groove 34 is arranged along the edge of the sealing cavity 32 on the sealing seat 31. The bottom end of the pump housing 4 is arranged in the sealing groove 34. A sealing ring is arranged in the sealing groove 34 to improve the sealing performance between the bottom end of the pump housing 4 and the sealing groove 34.

[0032] Referring to Figure 2 As shown in Figure 2 , the support structure 1 includes a base 11, a support plate 12 and a rib plate 13. The support plate 12 is vertically fixed at the upper end of the base 11. A plurality of fixed mounting holes are also arranged on the base 11 for fixing the base 11. The rib plate 13 is arranged between the rear end of the support plate 12 and the upper end of the base 11 to improve the structural strength between the support plate 12 and the base 11.

[0033] Referring to Figure 4 , Figure 5 As shown in Figure 4 and Figure 5 , the pressing and fixing structure 2 includes a rotary cylinder seat 21, a downward pressing cylinder 22, a connecting rod 23 and a pressing column 24. The rotary cylinder seat 21 is fixed on the support plate 12 through bolts. The downward pressing cylinder 22 is located on the rotary cylinder seat 21. One end of the connecting rod 23 is fixed on the driving end of the downward pressing cylinder 22, and a pressing column 24 is installed at the other end of the connecting rod 23. The rotary cylinder seat 21 in this embodiment can use the ACKL series corner cylinders in the prior art, and the downward pressing cylinder 22 can use a rotary downward pressing and clamping cylinder, which drives the pressing column 24 at the end of the connecting rod 23 to press and fix the pump housing 4 through automatic rotation and downward pressing.

[0034] Referring to Figure 6 , Figure 7 As shown in Figure 6 and Figure 7 , the pump housing 4 among them includes a housing 41, a wire hole 42 and a liquid outlet 43. The liquid outlet 43 is arranged at the top end of the housing 41 for liquid outlet. The wire hole 42 is arranged at the side end of the housing 41 for wiring. A liquid outlet sealing structure 6 is arranged in the liquid outlet 43 for sealing it.

[0035] Referring to Figure 8As shown, the liquid outlet sealing structure 6 includes a barrel sleeve 61, a barrel sleeve groove 62, a barrel sleeve gasket 63, and a connecting bolt 64. The barrel sleeve groove 62 is provided in the upper part of the barrel sleeve 61. The barrel sleeve gasket 63 is sleeved in the barrel sleeve groove 62 to improve the sealing effect of the barrel sleeve 61 on the liquid outlet 43. The connecting bolt 64 is provided in the central counterbore at the upper end of the barrel sleeve 61.

[0036] Referring to Figure 3 、 Figure 8 As shown, a fixing groove 33 is provided in the sealing cavity 32, and a threaded hole is provided in the center of the fixing groove 33. The bottom end of the barrel sleeve 61 is arranged in the fixing groove 33, and is connected with the threaded hole in the fixing groove 33 through the connecting bolt 64 to connect the liquid outlet sealing structure 6 with the sealing structure 3. The outer shape of the barrel sleeve 61 is adapted to match the inner shape of the liquid outlet 43, so that the barrel sleeve 61 can better seal the liquid outlet 43. Specifically, when the inner hole shape of the liquid outlet 43 is cylindrical or trapezoidal, the shape of the barrel sleeve 61 is also cylindrical or trapezoidal.

[0037] A fixing device for testing the sealing performance of a submersible pump housing of the present utility model. When used to test the sealing performance of the pump housing 4, the pump housing 4 is placed on the sealing structure 3. The rotating cylinder base 21 and the pressing cylinder 22 are used to drive the pressing column 24 at the end of the connecting rod 23 to press and fix the pump housing 4 through automatic rotation and pressing, so that the bottom end of the pump housing 4 is pressed and fixed in the sealing groove 34, and a sealing ring is provided to make the seal between the two. Then, the liquid outlet sealing structure 6 is placed into the liquid outlet 43, and the liquid outlet sealing structure 6 is connected with the sealing structure 3 by connecting the connecting bolt 64 with the threaded hole in the fixing groove 33 to seal the liquid outlet 43. Then, the test is carried out. A pressurized liquid pipeline or a pressurized gas pipeline is connected to the rear end of the communicating pipe 5 to test the sealing performance of the sealing cavity 32 and the pump housing 4, and the sealing performance test of the submersible pump housing can be conveniently carried out.

[0038] In addition, it should be understood that although this specification is described according to the embodiments, not each embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fixture for testing the sealing performance of a submersible pump casing, comprising a support structure (1) and a pump casing (4), characterized in that: The pump housing (4) further comprises a compression structure (2), a sealing structure (3) and a connecting pipe (5); the sealing structure (3) is fixed at the front end of the supporting structure (1); a plurality of the compression structures (2) are located beside the sealing structure (3); the pump housing (4) is fixed to the sealing structure (3) through the plurality of compression structures (2); and the connecting pipe (5) is fixed to the rear end of the supporting structure (1); the sealing structure (3) comprises a sealing seat (31), a sealing cavity (32) and a sealing groove (34); the sealing cavity (32) is arranged downwardly in the center of the sealing seat (31); a circle of sealing grooves (34) are arranged on the sealing seat (31) along the edge of the sealing cavity (32); and the bottom end of the pump housing (4) is arranged in the sealing groove (34); the front end of the connecting pipe (5) is connected to the sealing cavity (32).

2. The fixture for testing the sealing performance of a submersible pump casing according to claim 1, characterized in that: The support structure (1) comprises a base (11), a support plate (12) and a rib plate (13); the support plate (12) is vertically fixed to the upper end of the base (11); and the rib plate (13) is arranged between the rear end of the support plate (12) and the upper end of the base (11).

3. The fixture for testing the sealing performance of a submersible pump casing according to claim 2, characterized in that: The pressing structure (2) comprises a rotating cylinder seat (21), a pressing cylinder (22), a connecting rod (23) and a pressing column (24); the rotating cylinder seat (21) is fixed to a supporting plate (12) by bolts; the pressing cylinder (22) is located on the rotating cylinder seat (21); one end of the connecting rod (23) is fixed to a driving end of the pressing cylinder (22); and a pressing column (24) is installed on the other end of the connecting rod (23).

4. The fixture for testing the sealing performance of a submersible pump casing according to any one of claims 1 to 3, characterized in that: The pump housing (4) comprises a housing (41), a wire hole (42) and a liquid outlet (43); the liquid outlet (43) is arranged at the top end of the housing (41), and the wire hole (42) is arranged at the side end of the housing (41).

5. The fixture for testing the sealing performance of a submersible pump casing according to claim 4, characterized in that: The liquid outlet (43) is provided with a liquid outlet sealing structure (6) for sealing the liquid outlet.

6. The fixture for testing the sealing performance of a submersible pump casing according to claim 5, characterized in that: The liquid outlet sealing structure (6) comprises a sleeve (61), a sleeve groove (62), a sleeve gasket (63) and a connecting bolt (64); the sleeve groove (62) is arranged on the upper part of the sleeve (61); the sleeve gasket (63) is sleeved in the sleeve groove (62); and the connecting bolt (64) is arranged in the central countersunk hole at the upper end of the sleeve (61).

7. The fixture for testing the sealing performance of a submersible pump casing according to claim 6, characterized in that: A fixing groove (33) is provided in the sealing cavity (32), a threaded hole is provided in the center of the fixing groove (33), the bottom end of the sleeve (61) is provided in the fixing groove (33), and the liquid outlet sealing structure (6) is connected to the sealing structure (3) by means of a connecting bolt (64) which cooperates with the threaded hole in the fixing groove (33).

8. The fixture for testing the sealing performance of a submersible pump casing according to claim 6, characterized in that: The outer shape of the sleeve (61) is adapted to the inner shape of the liquid outlet (43).

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