CN203717380U - Mechanical bearing detecting device of shield pump - Google Patents
Mechanical bearing detecting device of shield pump Download PDFInfo
- Publication number
- CN203717380U CN203717380U CN201420053709.3U CN201420053709U CN203717380U CN 203717380 U CN203717380 U CN 203717380U CN 201420053709 U CN201420053709 U CN 201420053709U CN 203717380 U CN203717380 U CN 203717380U
- Authority
- CN
- China
- Prior art keywords
- tube
- pressure
- end nut
- pressure chamber
- detecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000011261 inert gas Substances 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000659 freezing mixture Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000008041 oiling agent Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The utility model provides a mechanical bearing detecting device of a shield pump, which relates to the technical field of bearing detection, and aims to achieve the technical goal of improving the bearing detection reliability. The device comprises an air pressure meter, a detector tube and an end nut, wherein the air pressure meter is fixedly provided with a totally closed pressure cavity, a pressure measuring head of the pressure meter extends into the pressure cavity, inert gas is filled in the pressure cavity, the air pressure in the pressure cavity is higher than the atmospheric pressure or lower than the atmospheric pressure, the detector tube is a totally closed rigid hollow tube body, the tube tail of the detector tube is fixed on the pressure cavity, the tube cavity of the detector tube is communicated with the pressure cavity, the axis of the end nut is provided with a cylindrical groove coaxial with the end nut, and the tube head of the detector tube extends into the cylindrical groove at the axis of the end nut in a clearance fit manner. The mechanical bearing detecting device provided by the utility model is particularly suitable for detecting the wearing situation of a spindle bearing of the shield pump.
Description
Technical field
The utility model relates to bearing detection technique, particularly relates to a kind of technology of mechanical type bearing detecting device of canned motorpump.
Background technique
Canned motorpump is the totally enclosed motor-and-pump integrated product of making freezing mixture and oiling agent for delivery of medium, formed by shield electric machine, pump case, impeller, the pump housing part of canned motorpump is to be directly connected with motor part, rotor axis of electric directly extends to pump housing part, front end is installed impeller, this complete nothing leakage that can ensure canned motorpump without shaft seal structure.
Bearing is all extremely important part for most rotating machinery, no exception to canned motorpump.Excessive bearing wear meeting causes the excessive play of pump inner rotatable part, makes pump in unstable, and therefore unsafe running state needs the bearing of canned motorpump rotating shaft to carry out daily detection, with the operation that ensures that canned motorpump is safe and reliable.Due to the structural feature of canned motorpump, all adopt the shaft bearing of sliding bearing as canned motorpump, its material is generally graphite or silicon carbide.
The difference that canned motorpump is different from conventional pump is, canned motorpump utilizes the medium of self carrying to carry out cooling motor and lubricating bearings.The medium that canned motorpump is carried inflammable and explosive dangerous chemicals often, and the shaft bearing of canned motorpump directly contacts with these dangerous chemicals, and detecting the shaft bearing wear condition of canned motorpump, currently used electrified detection means is easily subject to the interference of external electromagnetic environment, thereby cause signal wrong report, detecting reliability is poor, and detection range is also limited, can only detect bearing shaft to wearing and tearing.
Model utility content
For the defect existing in above-mentioned prior art, technical problem to be solved in the utility model is to provide the mechanical type bearing detecting device of the canned motorpump that a kind of detecting reliability is high.
In order to solve the problems of the technologies described above, the mechanical type bearing detecting device of a kind of canned motorpump provided by the utility model, is characterized in that: comprise barometer, detecting tube;
The pressure chamber that is fixed with an integrally closed on described barometer, barometric pressure-measuring head stretches in pressure chamber;
In described pressure chamber, be filled with inert gas, and air pressure in pressure chamber is higher than atmospheric pressure or lower than atmospheric pressure;
Described detecting tube is the rigid hollow body of an integrally closed, and the pipe tail of detecting tube is fixed on pressure chamber, and the tube chamber of detecting tube is communicated with pressure chamber.
Further, the tube head of described detecting tube is in T shape.
Further, the tube head pipe thickness of described detecting tube is 0.4 ± 0.02mm.
The mechanical type bearing detecting device of the canned motorpump that the utility model provides, utilize the characteristic that can cause rotating shaft eccentric rotary or axial float after bearing wear, detect the wear condition of canned motorpump shaft bearing by simple mechanical energy, avoid the interference of external electromagnetic environment, the multiple situation such as axial wearing and tearing, bearing gauge wear that bearing can be detected, its operational safety is higher.
Brief description of the drawings
Fig. 1 is the structural representation of the mechanical type bearing detecting device of the utility model embodiment's canned motorpump.
Embodiment
Below in conjunction with brief description of the drawings, embodiment of the present utility model is described in further detail, but the present embodiment is not limited to the utility model, every employing analog structure of the present utility model and similar variation thereof, all should list protection domain of the present utility model in.
As shown in Figure 1, the mechanical type bearing detecting device of a kind of canned motorpump that the utility model embodiment provides, is characterized in that: comprise barometer 1, detecting tube 3, end nut 4;
On described barometer 1, be fixed with the pressure chamber 2 of an integrally closed, the pressure-measuring head of barometer 1 stretches in pressure chamber 2;
In described pressure chamber 2, be filled with inert gas, and air pressure in pressure chamber 2 is higher than atmospheric pressure or lower than atmospheric pressure;
The rigid hollow body that described detecting tube 3 is integrally closeds, the pipe tail of detecting tube 3 is fixed on pressure chamber 2, and the tube chamber of detecting tube 3 is communicated with pressure chamber 2;
The axle center of described end nut 4 offers the cylinder shape groove coaxial with it, in the cylinder shape groove of the tube head of described detecting tube 3 with gap fiting mode inserting end nut 4 axle center.
In the utility model embodiment, the tube head of described detecting tube 3 is in T shape, and detecting tube should be selected pipe fitting easy to wear and that pipe thickness is thinner, and the tube head pipe thickness preferred value of detecting tube is 0.4 ± 0.02mm.
The utility model embodiment's usage mode is as follows:
End nut is coaxially fixed on to the rotating shaft tail end of canned motorpump, barometer, detecting tube and pressure chamber is all fixed on the pump tail rear bearing block of canned motorpump, when canned motorpump operation process, end nut synchronously rotates with the rotating shaft of canned motorpump, and detecting tube can not rotate;
When the shaft bearing wearing and tearing of canned motorpump do not reach limit value, the rotating shaft of canned motorpump is in stable rotation state, and end nut is stable rotation thereupon also, and now end nut does not contact mutually with detecting tube;
The shaft bearing wearing and tearing of canned motorpump reach after limit value, rotating shaft meeting generation eccentric rotary or the axial float of canned motorpump, also there is eccentric rotary or axial float in end nut thereupon, make cell wall or bottom land and the detecting tube generation rubbing contact of the cylinder shape groove in end nut axle center, the breakage thereby the tube wall that causes detecting tube is worn through, (inert gas in pressure chamber is overflowed to cause air pressure in pressure chamber to change, or outside air enters pressure chamber), barometric measured value also changes thereupon, by barometric measured value, the shaft bearing that can learn canned motorpump is in damaged condition, need to change in time.
Claims (3)
1. a mechanical type bearing detecting device for canned motorpump, is characterized in that: comprise barometer, detecting tube, end nut;
The pressure chamber that is fixed with an integrally closed on described barometer, barometric pressure-measuring head stretches in pressure chamber;
In described pressure chamber, be filled with inert gas, and air pressure in pressure chamber is higher than atmospheric pressure or lower than atmospheric pressure;
Described detecting tube is the rigid hollow body of an integrally closed, and the pipe tail of detecting tube is fixed on pressure chamber, and the tube chamber of detecting tube is communicated with pressure chamber;
The axle center of described end nut offers the cylinder shape groove coaxial with it, in the cylinder shape groove of the tube head of described detecting tube with gap fiting mode inserting end nut axle center.
2. the mechanical type bearing detecting device of canned motorpump according to claim 1, is characterized in that: the tube head of described detecting tube is in T shape.
3. the mechanical type bearing detecting device of canned motorpump according to claim 1, is characterized in that: the tube head pipe thickness of described detecting tube is 0.4 ± 0.02mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420053709.3U CN203717380U (en) | 2014-01-28 | 2014-01-28 | Mechanical bearing detecting device of shield pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420053709.3U CN203717380U (en) | 2014-01-28 | 2014-01-28 | Mechanical bearing detecting device of shield pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203717380U true CN203717380U (en) | 2014-07-16 |
Family
ID=51156538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420053709.3U Expired - Lifetime CN203717380U (en) | 2014-01-28 | 2014-01-28 | Mechanical bearing detecting device of shield pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203717380U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879517A (en) * | 2020-08-31 | 2020-11-03 | 合肥工业大学 | Device and method for detecting bearing abrasion in canned motor pump |
-
2014
- 2014-01-28 CN CN201420053709.3U patent/CN203717380U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879517A (en) * | 2020-08-31 | 2020-11-03 | 合肥工业大学 | Device and method for detecting bearing abrasion in canned motor pump |
| CN111879517B (en) * | 2020-08-31 | 2022-02-22 | 合肥工业大学 | Device and method for detecting bearing abrasion in canned motor pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |
|
| CX01 | Expiry of patent term |