CN202814513U - Online calibrating apparatus for thermal gas mass flow meter - Google Patents
Online calibrating apparatus for thermal gas mass flow meter Download PDFInfo
- Publication number
- CN202814513U CN202814513U CN 201220450583 CN201220450583U CN202814513U CN 202814513 U CN202814513 U CN 202814513U CN 201220450583 CN201220450583 CN 201220450583 CN 201220450583 U CN201220450583 U CN 201220450583U CN 202814513 U CN202814513 U CN 202814513U
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- flow meter
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- mass flow
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- pipeline
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Abstract
The utility model discloses an online calibrating apparatus for a thermal gas mass flow meter. The online calibrating apparatus comprises a flow meter which is provided with a sweeping pipeline, a pressure regulating valve, a pressure meter, a nitrogen gas cylinder, a gas delivery pipe and a gas outlet pipe, wherein a ventilation pipeline is arranged in the pressure regulating valve, and is provided with a fastening bolt for opening and closing the ventilation pipeline; one end of the ventilation pipeline is provided with an output joint for being connected with the pressure meter; the other end of the ventilation pipeline is provided with an input joint for being connected with the gas delivery pipe; the nitrogen gas cylinder is connected with the input joint of the pressure regulating valve through the gas delivery pipe; and the pressure meter is connected with the sweeping pipeline of the flow meter which is provided with the sweeping pipeline through the gas outlet pipe. The online calibrating apparatus has the advantages that the flow of nitrogen gas introduced to the thermal gas mass flow meter is controlled accurately by the pressure regulating valve, the pressure of nitrogen gas is kept at a fixed value, and the accuracy of the thermal gas mass flow meter is judged by comparing whether measured nitrogen gas flow data are the same as calibration and delivery data or not; and online calibration can be completed without detaching, and the online calibrating apparatus is convenient to use.
Description
Technical field
The utility model relates to a kind of calibrating installation of flowmeter, particularly discloses a kind of thermal type gas quality flow meter in-line calibration device.
Background technology
In the prior art, thermal type gas quality flow meter uses separately usually, when thermal type gas quality flow meter need to be calibrated, must be with after the thermal type gas quality flow meter dismounting, return again the factory-run school standard, and can't realize on-line calibration, in the process of dismounting and assembling, very bother like this, and time-consuming longer.
Summary of the invention
The purpose of this utility model is to overcome the defective that exists in the prior art, provides a kind of easy to operate, realizes on-line calibration, removes the dismounting thermal mass flow meter from, thermal type gas quality flow meter in-line calibration device easy to use.
The utility model is achieved in that a kind of thermal type gas quality flow meter in-line calibration device, comprise with the thermal mass flow meter that purges pipeline, it is characterized in that: also comprise pressure regulator valve, pressure gauge, nitrogen cylinder, gas piping, escape pipe, be provided with breather line in the described pressure regulator valve, described breather line is provided with tighting a bolt for the switch breather line, one end of described breather line is provided with the out splice going splice for the Bonding pressure meter, and the other end of described breather line is provided with the input adapter for connecting gas transmission pipe; Described nitrogen cylinder links to each other with input adapter by gas piping, and described pressure gauge links to each other by the purging pipeline of escape pipe with described thermal mass flow meter with purging pipeline.
Describedly tight a bolt, input adapter, out splice going splice link to each other with described breather line by the mode of screw thread respectively.
Described gas piping is made of the input flexible tube section that links to each other, input copper pipe section, and described input copper pipe section links to each other with described input adapter, and described input flexible tube section links to each other with described nitrogen cylinder.
Described escape pipe is made of the air-out hose section, the copper pipe section of giving vent to anger that link to each other, and the described copper pipe section of giving vent to anger links to each other with described pressure gauge, and soft section of described escape pipe links to each other with described purging pipeline.
Tighting a bolt of pressure regulator valve screws in the breather line of pressure regulator valve, and the path of internal ventilation pipeline diminishes, and flow and pressure by gas just can diminish, and control the flow of gas with this.
The beneficial effects of the utility model are: realize on-line calibration, the link of removing dismounting, postal delivery etc. from is used more easy; Accurately control the flow of the nitrogen that leads to thermal mass flow meter by pressure regulator valve, the pressure that makes nitrogen is a definite value, whether the data when relatively the measured nitrogen flow data of flowmeter should be dispatched from the factory with demarcation are identical, to judge whether thermal mass flow meter is accurate, if the data when the nitrogen flow data that flowmeter records are dispatched from the factory with demarcation are identical, illustrate that then flowmeter is accurate, otherwise be inaccurate.Realized by the utility model device that thermal mass flow meter need not be dismantled namely and can finish on-line calibration, easy to use, remove the trouble that the dismounting thermal mass flow meter is sent to the calibrating center from.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the structural representation of the utility model pressure regulator valve.
Wherein: 1, thermal mass flow meter; 2, purge pipeline; 3, pressure regulator valve; 4, pressure gauge; 5, nitrogen cylinder; 6, input flexible tube section; 7, input copper pipe section; 8, air-out hose section; 9, the copper pipe section of giving vent to anger; 10, breather line; 11, tight a bolt; 12, out splice going splice; 13, input adapter; 14, probe.
Embodiment
According to Fig. 1, Fig. 2, the escape pipe that the utility model comprises the gas piping that consists of with the thermal mass flow meter 1 that purges pipeline 2, pressure regulator valve 3, pressure gauge 4, nitrogen cylinder 5, by the input flexible tube section 6 that links to each other and input copper pipe section 7, is made of the air-out hose section 8 that links to each other and the copper pipe section 9 of giving vent to anger.Be provided with breather line 10 in the described pressure regulator valve 3, described breather line 10 is provided with and tights a bolt 11 for switch breather line 10, one end of described breather line 10 is provided with the out splice going splice 12 for Bonding pressure meter 4, and the other end of described breather line 10 is provided with for the input adapter 13 that connects input copper pipe section 7; Described input adapter 13, input copper pipe section 7, input flexible tube section 6, nitrogen cylinder 5 link to each other successively; Described pressure gauge 4 links to each other with the purging pipeline 2 of described thermal mass flow meter 1 with air-out hose section 8 by the copper pipe section 9 of giving vent to anger that links to each other.Describedly tight a bolt 11, input adapter 13, out splice going splice 12 link to each other with described breather line 10 by the mode of screw thread respectively.In the breather line 10 of the 11 screw-in pressure regulator valves that tight a bolt of pressure regulator valve 3, the path of breather line 10 diminishes, the nitrogen flow that passes through and pressure just can diminish, control the flow of nitrogen with this, the flow of nitrogen then records by the probe 14 of the purging pipeline 2 on the thermal mass flow meter 1 by thermal mass flow meter 1.When the pressure of nitrogen is a definite value, if thermal mass flow meter 1 is talked about accurately, data when the data on flows of the nitrogen that thermal mass flow meter 1 is measured should be dispatched from the factory with demarcation are identical, and the data that draw on the thermal mass flow meter 1 with demarcate when dispatching from the factory data not simultaneously, then thermal mass flow meter 1 is inaccurate; Utilize this point, the user can judge whether thermal mass flow meter 1 is accurate in the situation that thermal mass flow meter 1 is not disassembled, and dismantles the trouble that instrument is sent to the calibrating Spot detection to remove the user from.The utility model action effect when the accuracy of the own verification thermal mass flow meter 1 of user is obvious especially.
Claims (4)
1. thermal type gas quality flow meter in-line calibration device, comprise with the thermal mass flow meter that purges pipeline, it is characterized in that: also comprise pressure regulator valve, pressure gauge, nitrogen cylinder, gas piping, escape pipe, be provided with breather line in the described pressure regulator valve, described breather line is provided with tighting a bolt for the switch breather line, one end of described breather line is provided with the out splice going splice for the Bonding pressure meter, and the other end of described breather line is provided with the input adapter for connecting gas transmission pipe; Described nitrogen cylinder links to each other with input adapter by gas piping, and described pressure gauge links to each other by the purging pipeline of escape pipe with described thermal mass flow meter with purging pipeline.
2. described thermal type gas quality flow meter in-line calibration device according to claim 1 is characterized in that: describedly tight a bolt, input adapter, out splice going splice link to each other with described breather line by the mode of screw thread respectively.
3. described thermal type gas quality flow meter in-line calibration device according to claim 1, it is characterized in that: described gas piping is made of the input flexible tube section that links to each other, input copper pipe section, described input copper pipe section links to each other with described input adapter, and described input flexible tube section links to each other with described nitrogen cylinder.
4. described thermal type gas quality flow meter in-line calibration device according to claim 1, it is characterized in that: described escape pipe is made of the air-out hose section, the copper pipe section of giving vent to anger that link to each other, the described copper pipe section of giving vent to anger links to each other with described pressure gauge, and soft section of described escape pipe links to each other with described purging pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220450583 CN202814513U (en) | 2012-09-06 | 2012-09-06 | Online calibrating apparatus for thermal gas mass flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220450583 CN202814513U (en) | 2012-09-06 | 2012-09-06 | Online calibrating apparatus for thermal gas mass flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202814513U true CN202814513U (en) | 2013-03-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220450583 Expired - Fee Related CN202814513U (en) | 2012-09-06 | 2012-09-06 | Online calibrating apparatus for thermal gas mass flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202814513U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829847A (en) * | 2012-09-06 | 2012-12-19 | 上海华强浮罗仪表有限公司 | Online detection device of thermal gas mass flowmeter |
-
2012
- 2012-09-06 CN CN 201220450583 patent/CN202814513U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829847A (en) * | 2012-09-06 | 2012-12-19 | 上海华强浮罗仪表有限公司 | Online detection device of thermal gas mass flowmeter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20140906 |
|
| EXPY | Termination of patent right or utility model |