CN211121802U - Casing pressure resistance testing device of centrifugal pump - Google Patents
Casing pressure resistance testing device of centrifugal pump Download PDFInfo
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- CN211121802U CN211121802U CN202020147739.6U CN202020147739U CN211121802U CN 211121802 U CN211121802 U CN 211121802U CN 202020147739 U CN202020147739 U CN 202020147739U CN 211121802 U CN211121802 U CN 211121802U
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- 238000012360 testing method Methods 0.000 title claims abstract description 53
- 238000007789 sealing Methods 0.000 claims abstract description 42
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
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- 230000000694 effects Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 229920001778 nylon Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a casing withstand voltage testing arrangement of centrifugal pump relates to the pressure test technical field of centrifugal pump casing, include: the centrifugal pump comprises a centrifugal pump shell, a tension shaft, a connecting piece and a connecting piece, wherein the tension shaft is used for penetrating through two shaft holes oppositely arranged on the centrifugal pump shell, the two ends of the tension shaft are respectively provided with a connecting section exposed out of the centrifugal pump shell, and the end part of the connecting section is provided with a thread; the sealing assembly is sleeved on the connecting section and used for sealing the shaft hole; fixing nut, with linkage segment threaded connection for it is fixed with seal assembly, the withstand voltage testing arrangement of casing of the centrifugal pump of this application sets up the pulling force axle through two shaft holes that set up relatively on centrifugal pump casing, fixes seal assembly on the linkage segment of pulling force axle through fixing nut, realizes the sealed to the shaft hole, thereby makes the pulling force axle atress, has avoided among the correlation technique, leads to the damage of centrifugal pump casing because of the atress of screw hole.
Description
Technical Field
The utility model relates to a pressure test technical field of centrifugal pump shell, concretely relates to casing withstand voltage testing arrangement of centrifugal pump.
Background
At present, after the existing centrifugal pump shell is processed, a pressure test needs to be carried out to detect the sealing performance of the shell, the test pressure is usually 1.2-1.5 times of the normal working pressure of the centrifugal pump shell, because the thickness of the sealing part of the centrifugal pump shell is relatively thin, the size of the installation thread is small, if a pressure-resistant clamp is directly installed at the screw hole position of the shell pump, part of the pump body can deform under the action of high pressure, as shown in fig. 1, the centrifugal pump shell and the pressure-resistant detection device thereof in the prior art are provided with through holes at the front end, the rear end, the discharge flange and the suction flange of the centrifugal pump shell, and when the pressure test of the shell is carried out, the through holes need to be sealed; wherein, when being used for the shaft hole of later stage installation pump shaft to seal with sealed apron 202 on the centrifugal pump casing, through the screw hole threaded connection on bolt 201 and the centrifugal pump casing promptly, thereby carry out sealing connection in the end cover department of front end and rear end with sealed apron 202 fastening, because sealed position thickness is relatively thin, installation thread size is little, because the pressure of applying is greater than the pressure of pump normal operating far away when carrying out withstand voltage test, sealed apron 202 is under pressure, make bolt 201 also can be relatively great for the formation pulling force of screw hole, powerful tensile stress often can lead to the screw thread deformation of screw hole, need the successor to do over again, and is long in time, and is high in cost.
On the other hand, the casing of the centrifugal pump is relatively large and relatively heavy, and when the existing pressure resistance detection is carried out, after the casing of the centrifugal pump is sealed, pressure water is introduced into the casing through a set pressurizing pipeline, and the leakage is observed visually, particularly, the pressure water needs to enter the bottom of the centrifugal pump to be detected when a specific leakage position is detected, and if the leakage occurs at the moment, the personal safety of pressure resistance detection personnel is seriously injured.
Disclosure of Invention
In view of this, the embodiment of the present application provides a casing pressure resistance testing device of a centrifugal pump. One or more of the problems due to the limitations and disadvantages of the related art are overcome at least in part.
The application provides a casing pressure resistance testing device of a centrifugal pump, which comprises a tension shaft, a pressure resistance testing device and a pressure resistance testing device, wherein the tension shaft is used for penetrating through two shaft holes oppositely arranged on a centrifugal pump casing, connecting sections exposed out of the centrifugal pump casing are arranged at two ends of the tension shaft, and threads are arranged at the end parts of the connecting sections; the sealing assembly is sleeved on the connecting section and used for sealing the shaft hole; and the fixing nut is in threaded connection with the connecting section and is used for fixing the sealing assembly.
In some embodiments, the seal assembly comprises: the end face sealing ring, the sealing plate and the axial sealing ring; the end face sealing ring is arranged between the sealing plate and the centrifugal pump shell, and the axial sealing ring is arranged between the sealing plate and the connecting section.
In some embodiments, the casing pressure resistance testing apparatus of a centrifugal pump further comprises: and the movable cushion cover is sleeved on the connecting section and is arranged between the sealing plate and the fixed nut.
In some embodiments, the casing pressure resistance testing apparatus of a centrifugal pump further comprises: the sensor base plate is used for connecting a discharge port flange of the centrifugal pump shell; the pressure sensor is arranged on the sensor seat plate and used for outputting a pressure signal; and the display is electrically connected with the pressure sensor and used for displaying the pressure signal.
In some embodiments, the casing pressure resistance testing apparatus of a centrifugal pump further comprises: the pressurizing plate is used for connecting a suction port flange of the centrifugal pump shell; and the pressurizing pipeline is arranged on the pressurizing plate.
The utility model has the advantages that:
according to the casing pressure-resistant testing device of the centrifugal pump, the tension shaft penetrates through the two shaft holes oppositely formed in the casing of the centrifugal pump, the sealing assembly is fixed on the connecting section of the tension shaft through the fixing nut, and the shaft holes are sealed; meanwhile, through the combined action of the fixing nut and the tension shaft, compressive stress is generated on the end face of the shaft hole by test pressure in a pressure test, and the threaded hole on the end face of the shaft hole is not stressed, so that the thread damage of the centrifugal pump shell caused by the tensile stress of the threaded hole in the pressure test in the related technology is avoided; during the test, the pressure-resistant sealing performance of the shell can be visually known only by observing the change of a pressure curve on the display, and if leakage is displayed, the test pressure can be reduced to a safety value, and then the specific leakage position of the shell is visually checked, so that the personal safety of detection personnel is ensured.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.
Fig. 1 is a structural schematic diagram of pressure resistance detection of a centrifugal pump shell in the prior art.
Fig. 2 is a schematic structural diagram of a casing pressure resistance testing device of the centrifugal pump of the present invention.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Reference numerals: 1. a tension shaft; 11. a connecting section; 2. a seal assembly; 21. an end face seal ring; 22. a sealing plate; 23. an axial seal ring; 3. fixing a nut; 4. a movable cushion cover; 5. a sensor base plate; 6. a pressure sensor; 7. a display; 8. a pressurizing plate; 9. a pressurized conduit; 10. a centrifugal pump housing; 101. a shaft hole; 102. a discharge port flange; 103. a suction port flange.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in FIGS. 2 to 3: a casing pressure resistance test device of a centrifugal pump includes: the centrifugal pump comprises a tension shaft 1 and a centrifugal pump shell 10, wherein the tension shaft 1 is used for penetrating through two shaft holes 101 oppositely arranged on the centrifugal pump shell 10, two ends of the tension shaft 1 are respectively provided with a connecting section 11 exposed out of the centrifugal pump shell 10, and the end part of the connecting section 11 is provided with a thread; the sealing assembly 2 is sleeved on the connecting section 11 and used for sealing the shaft hole 101; and the fixing nut 3 is in threaded connection with the connecting section 11 and is used for fixing the sealing assembly 2.
In this application embodiment, seal assembly 2 has two, overlaps respectively to be established on two linkage segments 11, and fixation nut 3 has two, respectively with the threaded connection of two linkage segments 11 tip. Specifically, the thread at the end of the connecting section 11 is an external thread, and the fixing nut 3 is an internal thread.
The embodiment of the application provides a casing pressure resistance testing arrangement of centrifugal pump, set up pulling force axle 1 through two shaft holes 101 of relative setting on centrifugal pump casing 10, fix seal assembly 2 on the linkage segment 11 of pulling force axle 1 and make seal assembly 2 compress tightly at the outer terminal surface in shaft hole 101 through fixation nut 3, realize the sealed to shaft hole 101, thereby make pulling force axle 1 atress, in the correlation technique has been avoided, the atress because of the screw hole leads to centrifugal pump casing 10's damage, this application provides the holding power through pulling force axle 1 and fixation nut 3 and reaches the effect of fastening seal assembly 2, make seal assembly 2 produce compressive stress to the terminal surface in shaft hole 101 of centrifugal pump casing 10, avoid centrifugal pump casing 10's deformation in the test, make the finished product size accord with dimensional requirement.
In some embodiments, the seal assembly 2 comprises: an end face seal ring 21, a seal plate 22 and an axial seal ring 23; the end face seal ring 21 is arranged between the seal plate 22 and the centrifugal pump shell 10, the axial seal ring 23 is arranged between the seal plate 22 and the connecting section 11, when the fixing nut 3 fixes the seal assembly 2 on the connecting section 11 of the tension shaft 1 and presses the seal assembly 2 on the outer end face of the shaft hole 101, the end face seal ring 21 completes end face seal, and the axial seal ring 23 completes axial seal, so that the shaft hole 101 is sealed.
In some embodiments, the seal plate 22 is metal and the end seal 21 and axial seal 23 are rubber or nylon.
The application provides a casing pressure resistance test device of centrifugal pump is equipped with end face seal 21 between through closing plate 22 and centrifugal pump casing 10, through being equipped with axial sealing ring 23 between closing plate 22 and linkage segment 11, can improve the sealing performance of whole device.
In some embodiments, the casing pressure resistance testing apparatus of a centrifugal pump further comprises: and the movable cushion cover 4 is sleeved on the connecting section 11 and is arranged between the sealing plate 22 and the fixing nut 3.
In this application embodiment, activity cushion cover 4 is cylindricly, and the contact surface with linkage segment 11 is unthreaded, and the length of activity cushion cover 4 can set up according to particular case, and in some embodiments, pull shaft 1, seal assembly 2, fixation nut 3 and activity cushion cover 4 are all removable.
The application provides a casing pressure resistance test device of centrifugal pump through set up the activity pad cover 4 between closing plate 22 and fixation nut 3 to adapt to different centrifugal pump casing 10's length difference, the number of rotations when reducing fixation nut 3's fastening makes fixation nut 3 ability quick adjustment locking, efficiency when improving withstand voltage test.
In some embodiments, the casing pressure resistance testing apparatus of a centrifugal pump further comprises: a sensor seat plate 5 for connecting to the outlet flange 102 of the centrifugal pump housing 10; a pressure sensor 6 disposed on the sensor seat plate 5 for outputting a pressure signal; and the display 7 is electrically connected with the pressure sensor 6 and is used for displaying pressure information in a continuous curve form.
The application provides a casing pressure-resistant testing arrangement of centrifugal pump, through installing pressure sensor 6 additional, pressure sensor 6 converts pressure signal into the signal of telecommunication, direct display real-time pressure value curve in display 7, pressure sensor 6 can also connect signal processing or storage function module, a processing save and transmission for the pressure signal of telecommunication, the sealing performance situation that centrifugal pump casing 10 just can be known in real time to the change that inspection personnel observed pressure value curve, needn't get into dangerous position when experimental and carry out the tiny circumstances of leaking of naked eye observation, thereby avoid the potential safety hazard that exists, and relevant curve data are all uploaded to the server and are carried out the digital management of filing, ensure the integrality and the traceability of pump body manufacturing process data.
In some embodiments, the casing pressure resistance testing apparatus of a centrifugal pump further comprises: a pressurizing plate 8 for connecting a suction port flange 103 of the centrifugal pump casing 10; and a pressurizing pipe 9 provided on the pressurizing plate 8.
According to the casing pressure resistance testing device of the centrifugal pump, when pressure testing is required, the tension shaft 1 penetrates through the two shaft holes 101 which are oppositely arranged on the centrifugal pump casing 10, then the sealing assembly 2 is additionally arranged, and the tension shaft 1 and the sealing assembly 2 are fixed on the centrifugal pump casing 10 through the fixing nut 3; the supporting force is provided by the tension shaft 1 and the fixing nut 3 to achieve the effect of fastening the sealing component 2, and meanwhile, the sensor seat plate 5 and the pressurizing plate 8 are respectively and hermetically installed on the outlet flange 102 and the suction port flange 103 to finish sealing before pressure testing. When the pressure test is carried out, pressure water is injected into the centrifugal pump shell 10 through the pressurizing pipeline 9 to apply pressure to the centrifugal pump shell 10, the applied pressure transmits a pressure signal to the display 7 through the pressure sensor 6, and the pressure change condition inside the centrifugal pump shell 10 can be seen through the display 7, so that the pressure test is visual and rapid.
This application chooses for use safest effectual mode to carry out pressure test and observation under the prerequisite that satisfies pressure test, through pulling force axle 1 and fixation nut 3 atress, avoids prior art, causes the deformation after pressure test to reprocess such low efficiency mode of processing again, guarantees still to obtain the qualified product of size after pressure test. Adopt the test mode of this application in order to avoid danger, guarantee inspection test personnel's safety. Through installing pressure sensor 6 additional, direct demonstration real-time pressure value curve in display 7, the inspection personnel observe the change of pressure value curve and just can know centrifugal pump casing 10's sealing performance situation in real time, needn't get into dangerous position and carry out the tiny circumstances of leaking of naked eye observation to avoid the potential safety hazard that exists. And relevant curve data and data are uploaded to a server for digital filing management, so that the integrity and traceability of the data in the manufacturing process of the centrifugal pump are ensured.
The object of the present application is to provide a hardware configuration of a casing pressure resistance test device of a centrifugal pump different from the prior art, enabling a technician to realize further development in such a hardware configuration.
Other configurations of the casing pressure resistance test device of the centrifugal pump according to the embodiment of the present application, such as the pressurizing plate, the pressurizing pipe, the connection manner, etc., and operations thereof are known to those skilled in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments without departing from the spirit and scope of the present invention.
Claims (5)
1. A casing pressure resistance testing device of a centrifugal pump is characterized by comprising
The centrifugal pump comprises a tension shaft (1) and a centrifugal pump shell, wherein the tension shaft (1) is used for penetrating through two shaft holes oppositely arranged on the centrifugal pump shell, two ends of the tension shaft (1) are respectively provided with a connecting section (11) exposed out of the centrifugal pump shell, and the end part of the connecting section (11) is provided with a thread;
the sealing assembly (2) is sleeved on the connecting section (11) and used for sealing the shaft hole;
and the fixing nut (3) is in threaded connection with the connecting section (11) and is used for fixing the sealing assembly (2).
2. A casing pressure resistance testing device of a centrifugal pump according to claim 1, wherein the seal assembly comprises:
the end face sealing ring (21), the sealing plate (22) and the axial sealing ring (23); the end face sealing ring (21) is arranged between the sealing plate (22) and the centrifugal pump shell, and the axial sealing ring (23) is arranged between the sealing plate (22) and the connecting section (11).
3. The casing pressure resistance testing device of a centrifugal pump according to claim 2, further comprising:
and the movable cushion cover (4) is sleeved on the connecting section (11) and is arranged between the sealing plate (22) and the fixing nut (3).
4. The casing pressure resistance test device of a centrifugal pump according to any one of claims 1 to 3, further comprising:
a sensor seat plate (5) for connecting with a discharge port flange of the centrifugal pump housing;
the pressure sensor (6) is arranged on the sensor seat plate (5) and is used for outputting a pressure signal;
and the display (7) is electrically connected with the pressure sensor (6) and is used for displaying the pressure signal.
5. The casing pressure resistance testing device of a centrifugal pump according to claim 4, further comprising:
a pressure plate (8) for connecting a suction port flange of the centrifugal pump housing;
and the pressurizing pipeline (9) is arranged on the pressurizing plate (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020147739.6U CN211121802U (en) | 2020-01-29 | 2020-01-29 | Casing pressure resistance testing device of centrifugal pump |
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| CN202020147739.6U CN211121802U (en) | 2020-01-29 | 2020-01-29 | Casing pressure resistance testing device of centrifugal pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113092100A (en) * | 2021-05-07 | 2021-07-09 | 朝阳市加华电子有限公司 | Water pressure testing device and using method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113092100A (en) * | 2021-05-07 | 2021-07-09 | 朝阳市加华电子有限公司 | Water pressure testing device and using method thereof |
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