CN87204683U - Tester for safety valve and pressure gauge - Google Patents
Tester for safety valve and pressure gauge Download PDFInfo
- Publication number
- CN87204683U CN87204683U CN 87204683 CN87204683U CN87204683U CN 87204683 U CN87204683 U CN 87204683U CN 87204683 CN87204683 CN 87204683 CN 87204683 U CN87204683 U CN 87204683U CN 87204683 U CN87204683 U CN 87204683U
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- pressure
- valve
- gas
- safety valve
- safety
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a tester for safety valve and pressure gauge, which is composed of a plurality of safety valves, a pressure gauge, a pressure reducing joint, a standard pressure gauge, an air source pressure, an air supplying branch tube, a control valve, and an air supplying main tube. The utility model can supply air for testing various safety valves, stop valves, bursting slices, pressure gauges, and pressure reducing devices which have different standard and various range. The utility model has the advantages of flexible switch, simple and convenient test, accuracy, safety, and low expense. The utility model is adapted for organization using safety valve doing periodical test.
Description
The utility model relates to the detection and the calibration of safety valve, tensimeter and decompressor.
All kinds of gas compressing equipments in the production, as gas compressors such as air, oxygen, ammonias, various large-scale pressure-vessels, pipeline, as liquefied petroleum gas container, the safety valve and the tensimeter of various types and all size all need be set, but, use the safety valve of a period of time and tensimeter to make periodic check (every year is at least once) to operation aborning and but have difficulties.The current methods of verification safety valve generally is to utilize the production equipment of pressurized or the container people that is in operation to carry out for supercharging.This method of calibration, the contrast of installation code tensimeter do detects on equipment that moves or container because be not easy to, so verification is owed accurately, verification speed is also slow.Supercharging verification in equipment operation also causes equipment or container overload operation, and certain danger is arranged, and verification is very inconvenient again after adjusting or repairing to safety valve.In view of there is defective in this method of calibration, the enterprise that has then regularly replaces, and often still spendable safety valve after repairing is scrapped, and causes unnecessary waste.
The purpose of this utility model provides a kind of safety valve and pressure meter calibration device, the drawback that produces with the deficiency that overcomes above-mentioned safety valve checking method and regular update.When using this device, just can carry out verification, can also not unload safety valve and carry out continuous verification after it is adjusted or repair safety valve with various different structure forms and type of attachment, size and different popping pressure values by changing-over extremely flexibly; Also can the tensimeter of various different ranges and joint specification be detected and calibrate; Can also carry out verification to the gas pressure reducer of various different sizes and size for connection.And make that verification is easy, quick, accurate, safety, expense is low.
For achieving the above object, the utility model is provided with standard security valve union and a flange connecting-type and non-standard safety valve joint of the type that is threaded of the flange connecting-type of a plurality of various criterion sizes or the type that is threaded, the master gauge that a plurality of measurement ranges are different, a movable pressure tapping and a movable decompressor joint.And above-mentioned various terminal is connected by the arm of supplying gas, the operation valve separately and the house steward that supplies gas with master gauge, not connected between them.Supplying gas also is provided with two pressure gas source operation valves on the house steward, and one by decompressor, and one does not communicate with pressure gas source respectively by decompressor.At arbitrary safety valve joint, or movable pressure tapping, or connect safety valve to be verified on the movable decompressor joint, or tensimeter, or decompressor, open the operation valve that coupled logical operation valve reaches the master gauge that conforms to its rated pressure value, close remaining whole operation valve, then can form a closed system.According in closed container, the pressure of gas or liquid can not change its size, to the Pascal law of all directions transmission, rated pressure value according to be measured, open and the corresponding pressure gas source operation valve of its pressure, the cut-in pressure source of the gas can detect and calibration operation.
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the configuration connection diagram of safety valve and pressure meter calibration device.
Fig. 2 is a flange connecting-type safety valve joint cut-open view.
Fig. 3 is the type safety valve joint cut-open view that is threaded.
The standard security valve union 1 and 2 of flange connecting-type, the non-standard safety valve joint 3 of flange connecting-type, the standard security valve union 4 of the type that is threaded, the non-standard safety valve joint 5 of the type that is threaded, movable pressure reducer joint 6, master gauge 7,8 and 9, movable pressure tapping 10, blast pipe 11 all is fixed on the table top flat board 12 of operating desk by clamp nut, and their center line is on same straight line. This operating desk can be made fixed, also can make portable.
As shown in Figure 2, on the boss at its outer rim middle part of collar nut 20 dependence of the safety valve joint of flange connecting-type (standard or non-standard) and the table top flat board 12 that clamp nut 21 is fixed on operating desk, the form that is threaded is adopted in its underpart, by bowl-type attaching nut 22 with give Gas branch pipe 13 links to each other, and is flexible in order to connect, easy for installation, and a tube end of supplying gas is welded with a vertical section and is T-shaped contiguous block 24, and the microcephaly of contiguous block passes the circular hole of bowl-type attaching nut bottom, and its bead is stuck in the bowl nut, and can rotate freely. Put into seal washer 23 between T shape contiguous block 24 and collar nut 20, rotation bowl-type attaching nut gets final product the arm of will supplying gas and closely is connected with safety valve joint. It also is feasible on the bowl-type attaching nut that the arm of supplying gas directly is welded in, but it is easy for installation to be not so good as above-mentioned type of attachment.
As shown in Figure 3, the safety valve joint of the type that is threaded (standard or off-gauge) is except collar nut 25 is different with collar nut from the safety valve joint of flange connecting-type, its fixing on operating desk and the structure that links with the arm of supplying gas, identical with the flange connecting-type. Equally, movable pressure reducer joint, the normal pressure meter connector, movable pressure tapping is except being the adaptation pressure reducer and being connected connection, and adopted outside the collar nut of different structure form and size for connection its fixing and all identical with flange connecting-type safety valve joint with the syndeton of the arm of supplying gas on operating desk.
As mentioned above, owing to adopt T shape contiguous block and bowl-type attaching nut's dismounting extremely convenient, flexible.Just can carry out verification as long as change collar nut to safety valve, decompressor and the tensimeter of all size and size for connection.
The flange connecting-type, or the number that is provided with of the type standard security valve union that is threaded should be definite according to the safety valve kind with standard size for connection of need verification.Can satisfy the replacing, the verification that reduce collar nut as far as possible conveniently is principle.Movable pressure tapping and movable decompressor joint that number is set is also like this.
Number is set also should determines according to the rated pressure value of the safety valve of need verification, tensimeter, decompressor of master gauge generally should be provided with basic, normal, high three master gauges.Such as: range is set is respectively 0～1.6MPa, 0～6.0MPa, three master gauges commonly used of 0～16.0MPa are to adapt to and to satisfy the needs of verification.If the required master gauge kind of the rated pressure value that meets to be verified is too much, the also master gauge that a certain verification need be able to be used, such as: range is 0～0.1MPa, or 0～2.5MPa, or carry out verification again after any one in the master gauge 7,8 and 9 among the master gauge of 0～60.0MPa replacing Fig. 1.If verification safety valve or decompressor, with need with master gauge receive in the movable pressure tapping 10 more convenient.
Each safety valve, decompressor, pressure tapping and master gauge be the arm 13 of supplying gas by separately all, and operation valve 14 and operation valve inlet union 15 link to each other in the house steward 16 that supplies gas.And it is not connected.When operation valve was selected the right-angle type stop valve for use, the arm of supplying gas was connected with the bowl-type attaching nut with also adopting aforementioned T type contiguous block being connected of operation valve, and operation valve and operation valve inlet union are for being threaded, and the operation valve inlet union is welded on the house steward that supplies gas.
Supply gas and also be provided with exhaust-valve 17, pressure gas source operation valve 18,19 on the house steward.Exhaust-valve links to each other with gas outlet 11 by exhaust branch pipe 26, and its connected mode also adopts T type contiguous block to be connected with bowl nut, is used for two different check processes and discharges the interior residual high pressure gas of each pipeline.Certainly, also can discharge residual high pressure gas with arbitrary joint that does not connect to be measured.Pressure gas source operation valve 18 communicates with pressure gas source by decompressor, is used for, the verification of low pressure range.Operation valve 19 then directly communicates with pressure gas source, is used for the verification of high pressure range.Decompressor should be selected according to actual needs, makes output pressure can satisfy the requirement of verification with force value.
Supply gas house steward and all operation valves all is fixed on the top of operator's console flat board, and all arms of supplying gas all are installed in the below of operator's console flat board, so that the operation of verification.
Pressure gas source can adopt air or nitrogen compressor, also can adopt bottled pressure-air or nitrogen.Top pressure values such as safety valve to be verified are less than 14.7MPa(150kgf/cm
2) time, adopt bottled pressure-air or nitrogen comparatively suitable.
Each parts of this calibration equipment connect and top pressure value that the withstand voltage and tightness test of weld should be required according to verification, choose and carry out by the regulation of safety regulations.
Owing to adopt said structure, the utility model verification safety valve, tensimeter, decompressor are extremely convenient, flexible, as long as to be verified is received existing or changes on the joint that matches with its size for connection behind the collar nut, the master gauge that selection or replacing conform to its rated pressure value is connected corresponding pressure gas source and can be carried out verification.It is easy and simple to handle, and verification is accurate, fast, safety, and defeated storage pipeline is short, volume is little, air consumption is little, the verification expense is low, is well suited for using the unit of various safety valve, tensimeter, decompressor to do the periodic check use.
The impermeability that the utility model also can be used for the stop valve on pressurized equipment or the container detects.After taking certain safeguard procedures, also can be used for the burst pressure demonstration test of the rupture disk that pressure vessel uses.
The running program of this calibration equipment is described below in conjunction with embodiment.
The connecting thread of standard safety valve joint 4 collar nuts is M36 * 2 among Fig. 1, so 6K15 type safety valve directly can be connected.During connection, should add sealing gasket in both junctions.Open the operation valve that links to each other with low-voltage standards tensimeter 7(measurement range 0～1.6MPa) with safety valve joint 4 then respectively, and close remaining whole operation valve, comprise exhaust-valve 17 and pressure gas source operation valve 18,19.Regulate the pressure gas source decompressor again, make its output pressure meet the verification requirement.Slowly open pressure gas source operation valve 18 at last.Post-decompression gases at high pressure are introduced check system, simultaneously, pay close attention to the variation of indicated pressure on the master gauge, if when pressure reaches 0.78MPa, opened jumping by the safety valve of verification, and do not have between the pressure zone below 0.78MPa and leak, illustrate that then this safety valve is qualified, verification is promptly accused and is finished.If safety valve opens jumping when being greater than or less than 0.78MPa, or leakage arranged, then should first closing presure source of the gas operation valve 18, open exhaust-valve 17 again, get rid of residue air under pressure in the pipeline, after on the operator's console it being adjusted, repair (as: grinding), repeat above-mentioned checking procedure then, finish until verification.
The flange size for connection of the collar nut of non-standard safety valve joint 3 is that 110mm is not inconsistent with it among Fig. 1, unload this collar nut earlier, changing screw center correspondingly-sized is the collar nut of 80mm, then safety valve is connected, except adopting master gauge 9(measurement range 0～16.0MPa) and pressure gas source operation valve 19, to satisfy outside the verification needs that the popping pressure value is 9.8MPa, all the other checking procedures and embodiment 1 are identical.
As shown in Figure 1, activity pressure meter connector 10 collar nut connecting threads just in time coincide with the yo-150 oxygen gauge, it can be directly connected in this pressure tapping (also should add sealing gasket).But yo～150 oxygen gauge ranges are 0～24.52MPa, but master gauge 9 ranges of existing range maximum are 0～16.0MPa only, obviously do not match.Therefore, answering selected range is master gauge more than or equal to 0～25.0MPa, changes primary standard tensimeter 9.Open the operation valve that connects with master gauge and testing pressure epiphase again, close all remaining operation valves.Opening pressure source of the gas operation valve 19 slowly then, the cut-in pressure source of the gas, reflecting the force value that equates with pressure gas source on tensimeter compares, if the force value of the two indication equates, or the force value difference does not surpass permissible error (this routine tensimeter precision is 1.5 grades, and permissible error is ± 1.5%).And, open exhaust-valve 17, behind the pressure in the delivery system, pointer can normally be got back to " zero " position, and then this tensimeter is accurately, can use.If there is the indicated pressure value to surpass permissible error, pressure discharges backpointer and does not go back to " zero " position, or other defective is arranged, and after then should doing to repair, repeats said procedure and calibrates.
The external thread of the collar nut of movable decompressor joint 6 just in time coincide with it among Fig. 1, can directly connect (also should add sealing gasket) to yQy-1 type oxygen gauge, carries out verification by the program of embodiment 1 described unlatching or closed control valve.Behind the cut-in pressure source of the gas, if P
1, P
2Pressure stability is in 0.1～2.45MPa, P
2Transfer to arbitrary force value and all can all permanently export gas; After stopping exhaust, close the decompressor switch, P
2Pressure does not go up, and can think that this decompressor is intact.Otherwise, should then repeat above-mentioned steps again and carry out verification according to concrete fault place under repair.
Claims (5)
1, a kind of by the pressure gas source air feed, the device that safety attachments such as the safety valve that pressure vessel and equipment are used, stop valve, rupture disk, tensimeter and decompressor carry out verification, it is characterized in that it is by the joint that can connect various safety attachments and decompressor, master gauge, pressure gas source, respectively each joint is linked to each other with the house steward that supplies gas and the not connected arm 13 of supplying gas, operation valve 14 with master gauge, and be provided with by or the pressure gas source operation valve 18 that do not communicate with pressure gas source by decompressor and 19 the house steward 16 that supplies gas constitute.
2, calibration equipment according to claim 1 is characterized in that also being provided with on its house steward that supplies gas the exhaust-valve 17 that communicates with gas outlet 11.
3, calibration equipment according to claim 1, arm and various terminal is characterized in that supplying gas, or master gauge, or the connection of operation valve, and being connected of exhaust branch pipe 26 and gas outlet 11 and exhaust-valve 17, the type of attachment that preferably adopts T shape contiguous block 24 to match with bowl-type attaching nut 22 also can be welded on the arm of supplying gas on the bowl-type attaching nut.
4, calibration equipment according to claim 1, it is characterized in that its pressure gas source can adopt air or nitrogen compressor, also can adopt bottled pressure-air or nitrogen, the top pressure value that safety valve etc. are to be verified preferably adopts bottled pressure-air or nitrogen during less than 14.7MPa.
5, calibration equipment according to claim 1 is characterized in that the range of its master gauge can be chosen in the scope smaller or equal to 0～60.0MPa according to the needs of verification more than or equal to 0～0.1MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87204683 CN87204683U (en) | 1987-10-12 | 1987-10-12 | Tester for safety valve and pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87204683 CN87204683U (en) | 1987-10-12 | 1987-10-12 | Tester for safety valve and pressure gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87204683U true CN87204683U (en) | 1988-05-04 |
Family
ID=4820536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87204683 Withdrawn CN87204683U (en) | 1987-10-12 | 1987-10-12 | Tester for safety valve and pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87204683U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278314A (en) * | 2013-04-28 | 2013-09-04 | 江南大学 | Safety valve check bench |
| CN101682156B (en) * | 2007-03-30 | 2013-09-11 | 阿舍克罗夫特有限公司 | Adapter assembly and method of manufacture |
| CN104481514A (en) * | 2014-12-17 | 2015-04-01 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Special joint for overall alignment calibration of CalScan small-diameter pressure gauge |
| CN104729840A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Safety valve testing device and testing method |
| CN105715854A (en) * | 2014-12-03 | 2016-06-29 | 中国石油天然气股份有限公司 | Energy source accommodating equipment |
| CN112729676A (en) * | 2020-12-30 | 2021-04-30 | 深圳市弗赛特科技股份有限公司 | Pressure transmitter calibration stand |
-
1987
- 1987-10-12 CN CN 87204683 patent/CN87204683U/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101682156B (en) * | 2007-03-30 | 2013-09-11 | 阿舍克罗夫特有限公司 | Adapter assembly and method of manufacture |
| CN103278314A (en) * | 2013-04-28 | 2013-09-04 | 江南大学 | Safety valve check bench |
| CN103278314B (en) * | 2013-04-28 | 2015-08-12 | 江南大学 | Safety valve checkout platform |
| CN104729840A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Safety valve testing device and testing method |
| CN105715854A (en) * | 2014-12-03 | 2016-06-29 | 中国石油天然气股份有限公司 | Energy source accommodating equipment |
| CN104481514A (en) * | 2014-12-17 | 2015-04-01 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Special joint for overall alignment calibration of CalScan small-diameter pressure gauge |
| CN112729676A (en) * | 2020-12-30 | 2021-04-30 | 深圳市弗赛特科技股份有限公司 | Pressure transmitter calibration stand |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |