CN2038236U - Pressure vacuum meter parity checker - Google Patents
Pressure vacuum meter parity checker Download PDFInfo
- Publication number
- CN2038236U CN2038236U CN 88217634 CN88217634U CN2038236U CN 2038236 U CN2038236 U CN 2038236U CN 88217634 CN88217634 CN 88217634 CN 88217634 U CN88217634 U CN 88217634U CN 2038236 U CN2038236 U CN 2038236U
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- CN
- China
- Prior art keywords
- pressure
- vacuum meter
- meter
- checker
- parity checker
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a pressure vacuum meter parity checker which takes a precision pressure meter and a precision vacuum meter as a measurement standard to check a general pressure meter, a general pressure vacuum meter and a vacuum meter, the measurement ranges of which are 0.25 MPa-0.1MPa. The parity checker is composed of a cylinder body, a pipeline, a valve seat with a pressure meter joint and a base. The parity checker, which does not need to be externally connected with a pressure source or an emptying source and has no need of a power source, is operated by hands, and can generate a pressure value and a vacuum value, which are needed in checking. Air is the medium of the parity checker in work. The utility model has the advantages of simple structure, convenient operation, low cost, convenient maintenance and no vibration creation in working time.
Description
The utility model belongs to a kind of checker, it be with precision pressure gauge, accurate vacuum meter be standard examine and determine range be 0.25MPa～-general purpose pressure gauge of 0.1MPa, pressure vacuum meter, the used a kind of checker of vacuum meter.
Stipulate according to JJG52-87 General Manometer of Elastic Tube, pressure vacuum meter and vacuum meter vertification regulation: the tensimeter that higher limit is not more than 0.25MPa is measured in calibrating, and its actuating medium is necessary for air or other gas nontoxic, harmless, stable chemical performance.Actuating medium must be used gas when this just required to examine and determine.
Existing with precision pressure gauge, accurate vacuum meter be standard examine and determine range be 0.25MPa～-gas checker in the general purpose pressure gauge of 0.1MPa, pressure vacuum meter, vacuum meter, its pressure and thin empty generation have following two kinds: 1. outer pressure source and the air-evacuating source of connecing, normally external air compressor or vacuum pump, this use to checker can bring many inconvenience.As: YZJ-1,2 type tensimeters, vacuum meter checker.2. compressor having internally mounted in checker, utilize power supply and motor to be used as power and produce pressure source and air-evacuating source.The equipment set structure is comparatively complicated like this, the cost height, and maintenance, maintenance are also inconvenient, also easily produce vibration when working simultaneously, do not have oil pressure vacuum tester as the YZ-3 type.And, when all needing air drum and micro actuator to guarantee to examine and determine, the checker of above-mentioned two kinds of forms can be transferred to required pressure or thin null value.In addition, also having a class is that standard is examined and determine the used checker of general purpose pressure gauge with the precision pressure gauge, as: YX-1 type pressure validator, YJY-600 type pressure validator, YXQ-B type ordinarily manometer checker, the common table of YXQ-B2 type, the oxygen gauge checker, YYL-1 type tensimeter, dual-purpose checker of oxygen gauge or the like, all be to be used to examine and determine the pressure gauge tester of the measurement upper limit greater than 0.25MPa, because this class checker can only be with liquid as actuating medium, therefore all can not be used as the calibrating range and be 0.25MPa～-general purpose pressure gauge of 0.1MPa, the checker of pressure vacuum meter and vacuum meter is used.
The purpose of this utility model is exactly a kind of novel checker of design, and it does not need external pressure source and air-evacuating source, does not also need compressor having internally mounted and power supply, motor are used as power, and just can produce needed pressure of calibrating and thin sky as long as armrest rotates handwheel.Its actuating medium is an air.Therefore can be used as with precision pressure gauge or accurate vacuum meter be standard examine and determine range be 0.25MPa～-checker of general purpose pressure gauge, pressure vacuum meter and the vacuum meter of 0.1MPa.
The utility model is to be communicated with a pipeline behind cylinder body, and pipeline is communicated with the valve seat of two bands pressure tapping respectively again, and the valve seat of cylinder body and the pressure tapping of two bands is screwed on cast iron base.During calibrating, on the valve seat of band pressure tapping, connect precision pressure gauge or the accurate vacuum meter of using as standard.On another band pressure tapping valve seat, connect the general purpose pressure gauge examined and determine or pressure vacuum meter, vacuum meter.The handwheel that rotates then on the cylinder body rotates screw mandrel, drives piston and moves in cylinder barrel, produces needed force value of calibrating or thin null value, examines and determine general purpose pressure gauge, pressure vacuum meter or vacuum meter.
The utility model does not need external pressure source or air-evacuating source, does not need power supply yet, just can produce force value or thin null value required when checking as long as armrest rotates handwheel.Its actuating medium is an air.The maximum pressure value that is produced reaches more than the 0.5MPa, and thin reciprocal of duty cycle is not less than-0.092MPa.Therefore, be applicable to range be 0.25MPa～-calibrating of general purpose pressure gauge, pressure vacuum meter and the vacuum meter of 0.1MPa, it have simple in structure, easy to operate, do not produce vibration at work, cost is lower, the characteristics of maintenance, easy maintenance.
The utility model will be further described below in conjunction with accompanying drawing:
Fig. 1 is a schematic diagram of the present utility model.
Fig. 2 is a floor plan synoptic diagram of the present utility model.
Fig. 3 is a housing structure synoptic diagram of the present utility model.
In the drawings, 1 is cylinder body; 2 is base; 3 valve seats for the band pressure tapping; 4 is pipeline; 5 valve seats for the band pressure tapping; 6 is handwheel; 7 is screw mandrel; 8 is piston; 9 is O-ring seal; 10 is cylinder barrel; 11 for being with the valve that connects mouth; 12 is the atmospheric valve door; 13 is bonnet.
When work, rotate handwheel 6 screw mandrel 7 is rotated, drive piston 8 and in cylinder barrel 10, move, thereby produce calibrating required force value or thin null value.Its actuating medium is an air.Change hands when wheel when little, also can realize the fine setting of force value or thin null value, to obtain the force value or the thin null value of calibrating.
Cylinder body 1 is by cylinder barrel 10, piston 8, and screw mandrel 7, handwheel 6, O-ring seal 9 and bonnet 13 are formed.The internal diameter of cylinder barrel 10 is designed to φ 75mm, O RunddichtringO 9 with oil-resistant rubber material between piston 8 and the cylinder barrel 10 seals, screw mandrel No. 45 steel of 7 employings or the modifier treatment of 40Cr steel, wire rod thread adopts square tooth, square tooth is that helical pitch is the double thread of 12mm, to reduce the handwheel number of revolutions, screw mandrel 7 and piston 8 adopt to float and connect, the influence of coaxiality error during with elimination processing and assembling.Also have two valves on the bonnet 13 of cylinder body 1, one is logical atmosphere with valve 12, produce pressure or dredges when empty, must open, and closes this valve, and another valve 11 is circumscribed with and connects mouth, makes the utility model also can external pressure source or air-evacuating source under the situation of needs.
The valve seat 3 and 5 of band pressure tapping all is a kind of device with valve and pressure tapping.
Common available copper pipe of the material of pipeline 4 or steel pipe.
The material of base 2 usually cylinder iron.
Precision pressure gauge or accurate vacuum meter as standard are installed on the valve seat 3 of band pressure tapping, being installed on the valve seat 5 of band pressure tapping by the general purpose pressure gauge examined and determine or pressure vacuum meter, vacuum meter, as required, table as standard also can be exchanged installation with the table of being examined and determine, and the handwheel 6 that rotates on the cylinder body 1 just can be examined and determine.
When integral arrangement, cylinder body 1 is mounted on the latter half of of base 2 usually, and the valve seat 3 and 5 of two bands pressure tapping is fixed on base 2 first halfs, and pipeline 4 gets up valve seat 3,5 connections of cylinder body 1 and the pressure tapping of two bands.Arrange the operation when being convenient to examine and determine like this.
Claims (5)
1, a kind of being used for precision pressure gauge, accurate vacuum meter be standard examine and determine range be 0.25MPa～-checker of general purpose pressure gauge, pressure vacuum meter and the vacuum meter of 0.1MPa, it is characterized in that forming by valve seat 3 and 5, the base 2 of cylinder body 1, pipeline 4, band pressure tapping.
2, checker according to claim 1 is characterized in that actuating medium is an air.
3, checker according to claim 1 is characterized in that pipeline 4 is communicated with the valve seat 3 and 5 of cylinder body 1 and the pressure tapping of two bands, and the valve seat 3 and 5 of cylinder body 1 and the pressure tapping of two bands is mounted on the base 2.
4, checker according to claim 1 is characterized in that cylinder body 1 is made up of cylinder barrel 10, piston 8, screw mandrel 7, handwheel 6 and O-ring seal 9, bonnet 13.
5, checker according to claim 4 is characterized in that having valve 11 and the open to atmosphere valve 12 that band connects mouth on the bonnet 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88217634 CN2038236U (en) | 1988-10-22 | 1988-10-22 | Pressure vacuum meter parity checker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88217634 CN2038236U (en) | 1988-10-22 | 1988-10-22 | Pressure vacuum meter parity checker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2038236U true CN2038236U (en) | 1989-05-24 |
Family
ID=4850164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88217634 Withdrawn CN2038236U (en) | 1988-10-22 | 1988-10-22 | Pressure vacuum meter parity checker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2038236U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384815A (en) * | 2010-08-31 | 2012-03-21 | 沈阳兴大通仪器仪表有限公司 | Pressure meter detecting device |
| CN103913270A (en) * | 2013-01-05 | 2014-07-09 | 上海朝辉压力仪器有限公司 | Calibration device and operation method thereof |
| CN109236807A (en) * | 2018-09-13 | 2019-01-18 | 中国航空工业集团公司北京长城计量测试技术研究所 | Small dynamic pressure generator and working method based on the conversion of liquid gas pressure power |
| CN112484914A (en) * | 2020-10-30 | 2021-03-12 | 南京理工大学 | Quasi-static air pressure calibration device of minimum range pressure system and design method |
| CN112781788A (en) * | 2021-02-04 | 2021-05-11 | 广州计量检测技术研究院 | Pointer type micro differential pressure gauge calibration device |
-
1988
- 1988-10-22 CN CN 88217634 patent/CN2038236U/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384815A (en) * | 2010-08-31 | 2012-03-21 | 沈阳兴大通仪器仪表有限公司 | Pressure meter detecting device |
| CN103913270A (en) * | 2013-01-05 | 2014-07-09 | 上海朝辉压力仪器有限公司 | Calibration device and operation method thereof |
| CN109236807A (en) * | 2018-09-13 | 2019-01-18 | 中国航空工业集团公司北京长城计量测试技术研究所 | Small dynamic pressure generator and working method based on the conversion of liquid gas pressure power |
| CN112484914A (en) * | 2020-10-30 | 2021-03-12 | 南京理工大学 | Quasi-static air pressure calibration device of minimum range pressure system and design method |
| CN112484914B (en) * | 2020-10-30 | 2022-04-19 | 南京理工大学 | Quasi-static air pressure calibration device of minimum range pressure system and design method |
| CN112781788A (en) * | 2021-02-04 | 2021-05-11 | 广州计量检测技术研究院 | Pointer type micro differential pressure gauge calibration device |
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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 |