CN102384820A - Sealing test method for rubber sealing ring of prestressed concrete tube - Google Patents
Sealing test method for rubber sealing ring of prestressed concrete tube Download PDFInfo
- Publication number
- CN102384820A CN102384820A CN201010271044XA CN201010271044A CN102384820A CN 102384820 A CN102384820 A CN 102384820A CN 201010271044X A CN201010271044X A CN 201010271044XA CN 201010271044 A CN201010271044 A CN 201010271044A CN 102384820 A CN102384820 A CN 102384820A
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- China
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- rubber ring
- cushion rubber
- rubber
- testing machine
- aprons slot
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Abstract
A sealing test method for a rubber sealing ring of a prestressed concrete tube is finished according to following steps of 1 cutting out a rubber ring groove, and sealing two ends of the rubber ring groove; 2 cutting out a rubber ring with the same length as the rubber ring groove, fixing the rubber ring in the rubber ring groove with two ends sealed, measuring the height of the rubber ring extending out of the rubber ring groove by using calipers, and then placing the rubber ring groove with the rubber ring on a universal testing machine with a long pressing plate; 3 starting the universal testing machine, slowly compressing the rubber ring, and measuring compression amount of the rubber ring every time when 20 KN is increased in the testing machine until the compression amount of the rubber ring doesn't change; 4 drawing a curve graph of compression stress of the rubber ring and installation clearance. Thus, project planners can select rubber ring types meeting engineering requirements according to situation of external load of pipelines. The method is simple to operate, accurate in testing conclusion and low in testing cost.
Description
Technical field:
The invention belongs to a kind of detection method of equipment sealing property, particularly a kind of prestressed concrete pipe is used the rubber seal sealing test method.
Background technology:
The a large amount of hydraulic testing of main dependence of choosing of rubber seal (hereinafter to be referred as cushion rubber) diameter and hardness was confirmed when present domestic Prestressed concrete cylinder pipe was installed.Main method is that the cushion rubber with the different-diameter different hardness is respectively installed in the aprons slot of Prestressed concrete cylinder pipe, with after the pipe butt joint, checks the sealing of cushion rubber down at the pressure of regulation then.The pipe of single cushion rubber carries out the joint tighness test on the hydrostatic testing machine of special use.The pipe of two cushion rubbers is to utilize to be reserved in the space of the middle pressurization hole of two cushion rubbers in the middle of two cushion rubbers to pressurize, with the sealing of analyzing adapter.
There is deficiency in said method aspect a lot, mainly show:
1, the specification of cushion rubber, hardness need lot of test to confirm; A lot of designers are because test for data is not enough; In the safety coefficient of having to strengthen exponentially aspect the selection of parameter of engineering, so not only cause difficulty, and increased engineering cost to construction.
2, carry out the hydraulic testing and also will be equipped with special testing equipment, need qualified pipe, the output investment ratio of equipment and product is higher.
3, because test is what under desirable trystate, to carry out, do not meet the working condition of pipeline actual motion, be easy to engineering is caused design hidden danger.
Summary of the invention:
The object of the invention just is to overcome the deficiency that exists in the above-mentioned prior art, and provides a kind of prestressed concrete pipe to use the rubber seal sealing test method, and this method is simple to operate, conclusion (of pressure testing) is accurate, and experimentation cost is low.
As above design, technical scheme of the present invention is: a kind of prestressed concrete pipe use the rubber seal sealing test method, it is characterized in that: according to the following step completion: 1. intercepting aprons slot, with the aprons slot sealed at both ends; 2. cushion rubber is truncated to the length of aprons slot, and is fixed in the aprons slot of sealed at both ends, measure the height that cushion rubber exposes aprons slot with slide calliper rule, the aprons slot that cushion rubber will be installed then is placed on the universal testing machine that has long pressing plate; 3. open universal testing machine, slowly compress cushion rubber, the decrement that the every increase of testing machine 20KN measures a cushion rubber is till the decrement of cushion rubber no longer changes; 4. draw cushion rubber compression stress and assemblage gap curve map, like this project planner just can to choose according to pipeline external loads situation be the cushion rubber model with requirement of engineering.
Principle of work of the present invention is: utilize universal testing machine compression cushion rubber; Through measuring the decrement of cushion rubber; Draw cushion rubber stress and assemblage gap curve and find out the compressed limit point of cushion rubber; Be the limit point that cushion rubber no longer continues to be out of shape with the increase of stress, this point also is the limit point of working condition in the engineering design, so just can confirm the diameter and the hardness of cushion rubber through the actual residing condition of engineering.
Advantage of the present invention is: the data of acquisition are directly perceived, accurately, and can adopt the test of comparing of the cushion rubber of different size, thus the selection optimal design scheme.This method need not be equipped with special testing equipment, need on product, not experimentize, and whole test only needs two people, and just can accomplish test indoor.Greatly facilitate the collection of project planner like this, make enterprise reduce the input of equipment and product data.
Embodiment:
A kind of prestressed concrete pipe is used the rubber seal sealing test method, and its process of the test is:
1, intercepting 600mm aprons slot; With the aprons slot sealed at both ends; Its objective is the simulation cushion rubber in the actual working environment of engineering site, avoid that rubber overflows along aprons slot both ends open place in the process of compression, guarantee that cushion rubber is in air-tight state all the time in whole experiment.
2, the cushion rubber with intercepting is stretched to 600mm by the stretch ratio of stipulating; And be fixed in the aprons slot of sealed at both ends; Measure the height that cushion rubber exposes aprons slot with slide calliper rule, the aprons slot that cushion rubber will be installed then is placed on the universal testing machine that has the long pressing plate of 600mm.
3, open universal testing machine, slowly compress cushion rubber, the decrement that the every increase of testing machine 20KN measures a cushion rubber is till the decrement of cushion rubber no longer changes.
4, draw cushion rubber compression stress and assemblage gap curve map, like this project planner just can to choose according to pipeline external loads situation be the cushion rubber model with requirement of engineering.
Claims (1)
1. a prestressed concrete pipe is used the rubber seal sealing test method, it is characterized in that: accomplish according to the following step: 1. intercepting aprons slot, with the aprons slot sealed at both ends; 2. cushion rubber is truncated to the length of aprons slot, and is fixed in the aprons slot of sealed at both ends, measure the height that cushion rubber exposes aprons slot with slide calliper rule, the aprons slot that cushion rubber will be installed then is placed on the universal testing machine that has long pressing plate; 3. open universal testing machine, slowly compress cushion rubber, the decrement that the every increase of testing machine 20KN measures a cushion rubber is till the decrement of cushion rubber no longer changes; 4. draw cushion rubber compression stress and assemblage gap curve map, like this project planner just can to choose according to pipeline external loads situation be the cushion rubber model with requirement of engineering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010271044XA CN102384820A (en) | 2010-09-03 | 2010-09-03 | Sealing test method for rubber sealing ring of prestressed concrete tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010271044XA CN102384820A (en) | 2010-09-03 | 2010-09-03 | Sealing test method for rubber sealing ring of prestressed concrete tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102384820A true CN102384820A (en) | 2012-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010271044XA Pending CN102384820A (en) | 2010-09-03 | 2010-09-03 | Sealing test method for rubber sealing ring of prestressed concrete tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102384820A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136436A (en) * | 2015-07-29 | 2015-12-09 | 东风汽车股份有限公司 | Device and method for testing reliability of sealing ring of oil injector |
| CN112268820A (en) * | 2020-09-17 | 2021-01-26 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | High-voltage bushing top sealing performance evaluation method |
-
2010
- 2010-09-03 CN CN201010271044XA patent/CN102384820A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136436A (en) * | 2015-07-29 | 2015-12-09 | 东风汽车股份有限公司 | Device and method for testing reliability of sealing ring of oil injector |
| CN105136436B (en) * | 2015-07-29 | 2018-01-16 | 东风汽车股份有限公司 | Device and method for testing reliability of sealing ring of oil injector |
| CN112268820A (en) * | 2020-09-17 | 2021-01-26 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | High-voltage bushing top sealing performance evaluation method |
| CN112268820B (en) * | 2020-09-17 | 2022-05-17 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | High-voltage bushing top sealing performance evaluation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120321 |