CN203396691U - Tool for detecting adhesion strength of stator rubber of screw pump - Google Patents
Tool for detecting adhesion strength of stator rubber of screw pump Download PDFInfo
- Publication number
- CN203396691U CN203396691U CN201320561525.3U CN201320561525U CN203396691U CN 203396691 U CN203396691 U CN 203396691U CN 201320561525 U CN201320561525 U CN 201320561525U CN 203396691 U CN203396691 U CN 203396691U
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- China
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- screw pump
- stator
- piston
- sample
- bonding
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- Expired - Lifetime
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a tool for detecting the adhesion strength of the stator rubber of a screw pump and solves the problem that an existing detection method cannot well reflect the actual adhesion performance of a product. The tool specifically comprises an adhesion sample, a supporting seat, an upper cover and a piston, wherein the adhesion sample is cut from one end of a stator of the screw pump; an annular step is arranged at an upper port of the supporting seat; the adhesion sample is positioned on the step; the upper port of the supporting seat is in threaded connection with the upper cover; an upper clamping head is fixed in the center of the upper end surface of the upper cover; the piston comprises a piston head and a piston rod; the piston head is hung to the adhesion sample; the piston rod penetrates through a central hole of the adhesion sample and a central hole in the bottom of the supporting seat; a lower clamping head is fixed at the tail end of the piston rod. The tool for detecting the adhesion strength of the stator rubber of the screw pump can well reflect the stress state of the product in a using process, so that a detection result can directly reflect the adhesion performance of the stator rubber of the screw pump.
Description
Technical field
The utility model relates to a kind of screw pump Performance Detection instrument, and concrete is the testing tool of screw pump stator rubber bonding strength.
Background technology
The feature such as screw pump has that device structure is simple, easy to operate, small investment, energy-saving effect are obvious.Compare with the machine mode of adopting such as ram pump, submersible electric pump, hydraulic pump, with the obvious advantage, oil field is paid attention to extremely both at home and abroad, has become one of main oil tool.
Screw pump stator rubber is that screw pump most critical is also the weakest link, is the principal element that determines service life of screw pump.Stator rubber bonds on stator tube inwall by bonding agent, and rubber directly determines the serviceable life of screw pump with the quality of stator tube adhesive property.Owing to being interference fit between screw pump rotor and stator, especially after using a period of time, rubber generation swelling, this degree of interference fit increases, friction torsion between rotor and stator increases, between stator rubber and stator tube, bear shearing force and tensile force simultaneously, this just requires stator rubber can bond to very securely on stator tube inwall, if bonding strength is inadequate, screw pump is in the process of down-hole running, with regard to easy problem of coming unstuck, once come unstuck, screw pump has just lost jacking capacity, the rubber coming off is easily by rotor locking, cause that bar is disconnected.Therefore between stator rubber and stator tube, the detection of bonding strength is very important Performance Detection of screw pump, directly determines the serviceable life of screw pump.
In the past, screw pump stator rubber bonding strength detects mainly to be tested according to the method for veneer stretch release, mainly contained 90 degree and peeled off with 180 degree and peel off, and this test method is applied to screw pump bonding strength context of detection, mainly contains following shortcomings:
(1) test is different from the manufacturing process of screw pump by the manufacturing process of standard sample of photo, can not embody well the adhering state of screw pump stator rubber;
(2) stress in process of the test is different from the stress of screw pump;
(3) in the manufacture process of test print, need a lot of utility appliance and material.
Summary of the invention
The purpose of this utility model is to provide a kind of novel screw pump stator rubber bonding strength testing tool, the sample that this testing tool is used can directly intercept from screw pump stator, the manufacturing process of sample and product is in full accord, can embody well the adhesive property of product, process of the test also can embody product stress in use well.
For achieving the above object, the technical solution adopted in the utility model is: a kind of screw pump stator rubber bonding strength testing tool, comprise bonding sample, bearing, upper cover, piston, described bonding sample is intercepted by one end of screw pump stator, specimen shape is circular, and bonding sample is structurally divided into two-layer, and skin is stator tube, internal layer is stator rubber, bonding between two-layer; Described bearing, its upper port arranges ring-shaped step, and the width of step is identical with the thickness of stator tube, and the height of step is identical with the height of bonding sample, and bonding sample is sitting on this step, the upper port of the bearing upper cover that is threaded; The fixing upper clamping head in center, described upper cover ，Qi upper surface; Described piston, comprises piston head and piston rod, and piston head is hung on bonding sample, and the internal diameter of its diameter and bearing is corresponding, and piston rod is through the center pit of bonding sample and the center pit of rest base, and the tail end of piston rod is fixed lower clamping head.
Preferably the edge rounding of piston head, prevents the cutting of edge to rubber test piece.
The beneficial effects of the utility model:
1, the utility model screw pump bonding strength testing tool, provides a kind of new method for detecting screw pump stator rubber bonding strength;
2, the utility model testing tool, can embody product stress in use well, so testing result can more directly embody screw pump stator rubber adhesive property;
3, the utility model is simple in structure, and handling ease is convenient and practical.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model screw pump stator rubber bonding strength testing tool.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described:
As shown in Figure 1: a kind of screw pump stator rubber bonding strength testing tool, comprise bonding sample, bearing, upper cover, piston, described bonding sample is intercepted by one end of screw pump stator, specimen shape is circular, bonding sample is structurally divided into two-layer, outer 4 is stator tube, and internal layer 5 is stator rubber, bonding between two-layer; Described bearing 7, its upper port arranges ring-shaped step, and the thickness of outer 4 stator tubes of the width of step and bonding sample is identical, and the height of step is identical with the height of bonding sample, and bonding sample is sitting on this step, the upper port of bearing 7 upper cover 2 that is threaded; The fixing upper clamping head 1 in described upper cover 2 centers, ，Qi upper surface; Described piston, comprises piston head 3 and piston rod 6, and piston head 3 is hung on bonding sample 2, and the internal diameter of its diameter and bearing 7 is corresponding, and piston rod 6 is through the center pit of bonding sample and the center pit of bearing 7 bottoms, and the tail end of piston rod 6 is fixed lower clamping head 8.
During detection, the upper and lower clamping head that uses tension tester to clamp testing tool stretches, until stator rubber and stator tube are peeled off, just can detect the bonding strength between rubber and stator tube.
Claims (1)
1. a screw pump stator rubber bonding strength testing tool, comprise bonding sample, bearing, upper cover, piston, it is characterized in that: described bonding sample is intercepted by one end of screw pump stator, specimen shape is circular, bonding sample is structurally divided into two-layer, skin is stator tube, and internal layer is stator rubber, bonding between two-layer; Described bearing, its upper port arranges ring-shaped step, and the width of step is identical with the thickness of stator tube, and the height of step is identical with the height of bonding sample, and bonding sample is sitting on this step, the upper port of the bearing upper cover that is threaded; The fixing upper clamping head in center, described upper cover ，Qi upper surface; Described piston, comprises piston head and piston rod, and piston head is hung on bonding sample, and the internal diameter of its diameter and bearing is corresponding, and piston rod is through the center pit of bonding sample and the center pit of rest base, and the tail end of piston rod is fixed lower clamping head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320561525.3U CN203396691U (en) | 2013-09-11 | 2013-09-11 | Tool for detecting adhesion strength of stator rubber of screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320561525.3U CN203396691U (en) | 2013-09-11 | 2013-09-11 | Tool for detecting adhesion strength of stator rubber of screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203396691U true CN203396691U (en) | 2014-01-15 |
Family
ID=49908215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320561525.3U Expired - Lifetime CN203396691U (en) | 2013-09-11 | 2013-09-11 | Tool for detecting adhesion strength of stator rubber of screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203396691U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576612A (en) * | 2017-10-10 | 2018-01-12 | 河北小蜜蜂工具集团有限公司 | A kind of diamond circular saw film base body endoporus coordinates the detection device of intensity with packing ring |
| CN109001108A (en) * | 2018-08-08 | 2018-12-14 | 中国石油天然气集团有限公司 | The detection device and detection method of stator motor rubber adhesive effect |
-
2013
- 2013-09-11 CN CN201320561525.3U patent/CN203396691U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576612A (en) * | 2017-10-10 | 2018-01-12 | 河北小蜜蜂工具集团有限公司 | A kind of diamond circular saw film base body endoporus coordinates the detection device of intensity with packing ring |
| CN109001108A (en) * | 2018-08-08 | 2018-12-14 | 中国石油天然气集团有限公司 | The detection device and detection method of stator motor rubber adhesive effect |
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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: 20140115 |
|
| CX01 | Expiry of patent term |