BS 5173-102 10-1990 Methods of test for rubber and plastics hoses and hose assemblies - Hydraulic pressure tests - Hydrostatic tests for oil suction and discharge hose《橡胶和塑料软管组件的试验.pdf

1、BRITISH STANDARD BS 5173-102.10: 1990 Methods of test for rubber and plastics hoses and hose assemblies Part 102: Hydraulic pressure tests Section 102.10 Hydrostatic tests for oil suction and discharge hose UDC 621.643.33:678.067-462:620.162.4BS5173-102.10:1990 This British Standard having beenprepa

2、red under the directionof the Rubber StandardsPolicy Committee, waspublished under the authorityof the Board of BSI andcomes into effect on 29 June1990 BSI 07-1999 The following BSI references relate to the work on this standard: Committee reference RUM/9 Draft for comment88/43370 DC ISBN 0 580 1823

3、9 8 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Rubber Standards Policy Committee (RUM/-) to Technical Committee RUM/9, upon which the following bodies were represented: British Coal Corporation British Fluid Power Association Britis

4、h Gas plc British Railways Board British Rubber Manufacturers Association Chief and Assistant Chief Fire Officers Association Energy Industries Council Engineering Equipment and Materials Users Association Ministry of Defence Society of Motor Manufacturers and Traders Limited Amendments issued since

5、 publication Amd. No. Date of issue CommentsBS5173-102.10:1990 BSI 07-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 General 1 3 Apparatus 1 4 Test medium 1 5 Procedure 1 6 Test report 2 Publications referred to Inside back coverBS5173-102.10:1990 ii BSI 07-19

6、99 Foreword This Section of BS5173, prepared under the direction of the Rubber Standards Policy Committee, is a revision of clause 4.3 of BS5173-2:1976. BS5173-2:1976 is withdrawn. The remainder of the 1976 edition is to be revised and as each of the tests is revised it is intended to issue it as a

7、separate Part or Section of BS5173, as described in BS5173-100. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity f

8、rom legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1and2, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment

9、 table on the inside front cover.BS5173-102.10:1990 BSI 07-1999 1 1 Scope This Section of BS5173 describes methods for the hydrostatic pressure testing of oil suction and discharge hose assemblies. These hoses, which are generally larger and heavier in construction than industrial hoses, are tested

10、either as the complete hose length or as a complete hose assembly. NOTEThe titles of the publications referred to in this standard are listed on the inside back cover. 2 General Unless otherwise specified in the following tests, all tests shall be carried out at standard temperature and humidity as

11、specified in BS903-A35. However, because of the size and bulk of these hoses it is not always practicable to carry out the test in a controlled laboratory environment. It is therefore permissible to carry out the test in a stabilized industrial environment provided that the test assembly has been st

12、ored in that environment for24 h. When the test environment does not comply with BS903-A35, the actual conditions shall be recorded and form part of the test report. 3 Apparatus 3.1 Pressure source capable of applying pressure at the rate specified in5.1.3 up to the specified test pressure. 3.2 Pres

13、sure gauges of a suitable range shall be chosen for the test so that the test pressure reading is between15% and85% of the full-scale reading. 3.3 Measuring tape 4 Test medium Unless otherwise specified in the following tests, the test medium shall be water. WARNING NOTE. The use of air and other ga

14、seous materials as testing media should be avoided because of the risk to operators. In special cases, where such media are required for the tests, strict safety measures are imperative. Furthermore, it is stressed that when a liquid is used as the test medium, it is essential that all air is expell

15、ed from the hose or hose assembly because of the risk of injury to the operator due to the sudden expansion of trapped air being released when the hose bursts. 5 Procedure 5.1 Proof test on production hoses 5.1.1 The hose or hose assembly shall be laid out as straight as possible, filled with liquid

16、 and vented to remove all trapped air. The hose shall be free to expand and contract without restraint. 5.1.2 Apply a pressure of0.7 bar 1)and measure the overall length of the assembly (L 0 ) in accordance with BS5173-101.2 using a suitable graduated tape. 5.1.3 Increase the pressure over a period

17、of5 min to half the specified test pressure (see BS6596 or the relevant hose product specification). Hold this pressure for10 min and then reduce the pressure to0 bar over a period of5 min. 5.1.4 Increase the pressure once again over a period of5 min this time to the full specified test pressure and

18、 hold for10 min. (See BS6596 or the relevant hose product specification.) 5.1.5 Whilst at the full specified test pressure remeasure the overall length of the assembly (L 1 ) The increase in length over that originally measured at0.7 bar represents the temporary elongation and shall be recorded as a

19、 percentage, which is calculated as follows: temporary elongation = 5.1.6 Again reduce the pressure to0 bar over a period of5 min. 5.1.7 After an interval of at least15 min and not more than30 min again raise the pressure to0.7bar and measure the overall length of the assembly (L 2 ). The increase i

20、n length over that originally measured at0.7 bar represents the permanent elongation and shall be recorded as a percentage, which is calculated as follows: permanent elongation = 5.2 Tests on sample, or prototype hoses 5.2.1 In addition to the non-destructive test specified in5.1.1 to 5.1.7 the foll

21、owing destructive tests may be carried out on sample or prototype hoses. 5.2.2 Bend the hose to its minimum bend radius (asspecified in the relevant hose product specification) and while in the bent position carry out the procedure specified in5.1.1 to5.1.6 (omitting the measurement of elongation).

22、5.2.3 Release the hose from the bent position and increase the pressure over a period of15 min to a specified multiple of the specified working pressure (usually five times for marine hose and four times for other types: see BS6596 or the relevant hose product specification). 5.2.4 Maintain this pre

23、ssure for15 min and then further increase the pressure until the hose bursts. 1) 1 bar=10 5Pa=100 kPa. L 1 L 0 L 0 -100 L 2 L 0 L 0 -100 BS5173-102.10:1990 2 BSI 07-1999 6 Test report The test report shall include the following information: a) a full description of the hose tested; b) the date of ma

24、nufacture and batch, reference or serial number; c) method of manufacture and details of reinforcement; d) the number and Section of this British Standard i.e.BS5173-102.10:1990; e) the specified test pressure; f) the test medium; g) the test conditions, if different to BS903-A35; h) the temporary e

25、longation; i) the permanent elongation; j) the result, if applicable, of the test in the bent position; k) the pressure held prior to bursting, if applicable; l) the pressure at which the hose burst, if applicable.BS5173-102.10:1990 BSI 07-1999 Publications referred to BS903, Methods of testing vulc

26、anized rubber. BS903-A35, Temperatures, humidities and times for conditioning and testing of test pieces. BS5173, Methods of test for rubber and plastics hoses and hose assemblies. BS5173-2, Hydraulic pressure tests. BS5173-100, General introduction. BS5173-101.2, Measurement of length of hoses and

27、hose assemblies. BS6596, Specification for ratios of proof and burst pressure to design working pressure for rubber and plastics hoses and hose assemblies. BS 5173-102.10: 1990 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible fo

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