CN201302499Y - Axial thrust-measuring device of shield pump - Google Patents
Axial thrust-measuring device of shield pump Download PDFInfo
- Publication number
- CN201302499Y CN201302499Y CNU2008200609062U CN200820060906U CN201302499Y CN 201302499 Y CN201302499 Y CN 201302499Y CN U2008200609062 U CNU2008200609062 U CN U2008200609062U CN 200820060906 U CN200820060906 U CN 200820060906U CN 201302499 Y CN201302499 Y CN 201302499Y
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- force
- axial thrust
- canned motor
- motor pump
- lever
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Abstract
The utility model discloses an axial thrust-measuring device of a shield pump, which is arranged on the shield pump. The axial thrust-measuring device comprises a force-transmitting mechanism and a force-measuring mechanism. The force-transmitting mechanism is arranged at the rear end of the shield pump and accepts axial thrust of the shield pump. The axial thrust accepted by the force-transmitting mechanism is converted into constant force which is convenient for being measured, and is measured out by the force-measuring mechanism which is connected with the force-transmitting mechanism. The axial thrust-measuring device which is obtained according to the above scheme transmits force by the force-transmitting mechanism and calculates out the axial thrust of the shield pump by the force-measuring mechanism according to the lever principle. With the characteristics of simple structure, easy operation and exact measuring, the axial thrust-measuring device can provide basis for design.
Description
Technical field:
The utility model relates to a kind of mechanical device for measuring force, particularly a kind of measurement mechanism that is used to measure the canned motor pump axial thrust.
Background technology:
Canned motor pump is widely used in liquid such as conveying acid in the industry such as oil, chemical industry, refrigeration, food, national defence, atomic energy, alkali, inflammable, explosive, severe toxicity with its absolute no leaks.On pump class device, annual maintenance cost is all very big, and canned motor pump is no exception.An important indicator weighing the canned motor pump functional reliability is that the mean free error time, the longer the better.The important spare part of decision shielded electric pump average non-failure operation time is the serviceable life of bearing friction pair, and the stressed of strict control thrust bearing friction pair is the key that improves the electric pump reliability.The factor that influences the serviceable life of friction pair comprises the material of friction pair, friction pair cooperation and axial force etc.And wherein be one of key of canned motor pump design especially with axial force, the uncertainty of axial thrust can cause canned motor pump complete machine performance to be had a greatly reduced quality.In the production run,,, do not detect data verification accurately mostly by means of Theoretical Calculation and operating experience for determining of canned motor pump axial thrust in the past.Cause excessive in advance damage pump in part, reduction of service life, the increase maintenance cost of most canned motor pumps because of axial thrust.
The utility model content:
The utility model is measured existing problem at above-mentioned having now to the canned motor pump axial thrust, and a kind of device that can accurately measure axial thrust is provided, it can provide foundation for design, to improve the canned motor pump product structure design, improve serviceable life, increase economic efficiency.
In order to achieve the above object, the technical solution adopted in the utility model:
Canned motor pump axial thrust measurement mechanism, this device is settled on the canned motor pump, and it comprises force transmission mechanism and force measuring machine; Described force transmission mechanism is placed in the canned motor pump rear end, accepts the axial thrust of canned motor pump; This force transmission mechanism converts the axial thrust that receives to be convenient to measure weighing apparatus and decides power, and measures by connected force measuring machine.
Described force transmission mechanism comprises power transmission connecting pin, force transmitters and transmission rod, described force transmitters connects the pump shaft of canned motor pump by the power transmission connecting pin, to convert the weighing apparatus of being convenient to measure to by the axial thrust of power transmission connecting pin transmission and decide power, and be passed to the force measuring machine measurement by connected transmission rod.
Described force measuring machine is a lever enlarger, it comprises lever, lever pillar and dynamometry display instrument, the thick stick body of described lever connects the transmission rod in the force transmission mechanism, and the two ends of this lever connect respectively and are used for as the lever pillar of balance pivot and the dynamometry display instrument that is used to measure.
The utility model that obtains according to such scheme has force measuring machine to calculate the canned motor pump axial thrust according to lever principle by the force transmission mechanism power transmission again; This device for measuring force is simple in structure, and processing ease is measured accurately, can provide foundation for design.
The utility model can satisfy canned motor pump product design requirement fully, improves dependability, prolongs complete machine serviceable life, has favorable social and economic benefits; The utility model also guarantees to improve the quality of products, and reduces the after sale service expense, has good business economic benefit.
Description of drawings:
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is a structural representation of the present utility model.
Embodiment:
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
To the measurement of canned motor pump axial thrust,, so just there is the defective that does not detect data verification accurately in the prior art normally by means of Theoretical Calculation and operating experience.
In order to solve the problems of the technologies described above, the utility model provide a kind of simple in structure, measure measurement mechanism accurately, as shown in Figure 1:
This device is made up of force transmission mechanism 1 and force measuring machine 2 two parts, and wherein force transmission mechanism 1 comprises power transmission holder 1004, power transmission connecting pin 1001, force transmitters 1003 and transmission rod 1005, and these holder 1004 fixed in position are on the rear bearing block 4 of canned motor pump; Power transmission connecting pin 1001 is connected with the pump shaft 3 of canned motor pump, force transmitters 1003 in it passes rear bearing block 4 and be placed in power transmission holder 1004 by bearing 1002 is connected, described transmission rod 1005 is placed in the power transmission holder 1004, one end is inserted in force transmitters 1003, and the other end passes power transmission holder 1004 and is connected with lever 2001 in the force measuring machine 2.
The measurement mechanism that obtains according to technique scheme connects pump shaft and force transmitters by the power transmission pin, and axial force is transferred to the lever enlarger; And record the result by the lever structure for amplifying, calculate the canned motor pump axial thrust according to display result according to lever principle again; Device for measuring force is simple in structure, and processing ease is measured accurately, can satisfy the product design requirement fully.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the instructions just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1, canned motor pump axial thrust measurement mechanism, this device is settled on the canned motor pump, and it comprises force transmission mechanism and force measuring machine; It is characterized in that described force transmission mechanism is placed in the canned motor pump rear end, accept the axial thrust of canned motor pump; This force transmission mechanism converts the axial thrust that receives to be convenient to measure weighing apparatus and decides power, and measures by connected force measuring machine.
2, canned motor pump axial thrust measurement mechanism according to claim 1, it is characterized in that, described force transmission mechanism comprises power transmission connecting pin, force transmitters and transmission rod, described force transmitters connects the pump shaft of canned motor pump by the power transmission connecting pin, to convert the weighing apparatus of being convenient to measure to by the axial thrust of power transmission connecting pin transmission and decide power, and be passed to the force measuring machine measurement by connected transmission rod.
3, canned motor pump axial thrust measurement mechanism according to claim 1, it is characterized in that, described force measuring machine is a lever enlarger, it comprises lever, lever pillar and dynamometry display instrument, the thick stick body of described lever connects the transmission rod in the force transmission mechanism, and the two ends of this lever connect respectively and are used for as the lever pillar of balance pivot and the dynamometry display instrument that is used to measure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200609062U CN201302499Y (en) | 2008-11-18 | 2008-11-18 | Axial thrust-measuring device of shield pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200609062U CN201302499Y (en) | 2008-11-18 | 2008-11-18 | Axial thrust-measuring device of shield pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201302499Y true CN201302499Y (en) | 2009-09-02 |
Family
ID=41086127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200609062U Expired - Fee Related CN201302499Y (en) | 2008-11-18 | 2008-11-18 | Axial thrust-measuring device of shield pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201302499Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940540A (en) * | 2014-04-14 | 2014-07-23 | 上海交通大学 | Measuring device and method of fluid dynamic axial force of vertical type wet rotor of shielded motor |
| CN104655336A (en) * | 2015-01-19 | 2015-05-27 | 江苏大学 | Water spraying propulsion pump structure capable of measuring dynamic exciting force of blade |
-
2008
- 2008-11-18 CN CNU2008200609062U patent/CN201302499Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940540A (en) * | 2014-04-14 | 2014-07-23 | 上海交通大学 | Measuring device and method of fluid dynamic axial force of vertical type wet rotor of shielded motor |
| CN103940540B (en) * | 2014-04-14 | 2016-03-02 | 上海交通大学 | Protected type motor vertical wet rotor hydrodynamic axial-force testing device and method |
| CN104655336A (en) * | 2015-01-19 | 2015-05-27 | 江苏大学 | Water spraying propulsion pump structure capable of measuring dynamic exciting force of blade |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090902 Termination date: 20131118 |