CN109724659A - A kind of kitchen range gas flow test macro and test method - Google Patents
A kind of kitchen range gas flow test macro and test method Download PDFInfo
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- CN109724659A CN109724659A CN201711049701.4A CN201711049701A CN109724659A CN 109724659 A CN109724659 A CN 109724659A CN 201711049701 A CN201711049701 A CN 201711049701A CN 109724659 A CN109724659 A CN 109724659A
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- 238000012360 testing method Methods 0.000 title claims abstract description 47
- 238000010998 test method Methods 0.000 title claims abstract description 11
- 239000000567 combustion gas Substances 0.000 claims abstract description 140
- 239000007789 gas Substances 0.000 claims abstract description 43
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 238000013481 data capture Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 231100000640 hair analysis Toxicity 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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Abstract
The present invention relates to a kind of kitchen range gas flow test macros, including total pressure regulator valve, mass flow meters, pressure gauge and the plug valve being arranged on combustion gas main line, at least two combustion gas branches are parallel on the plug valve, each combustion gas branch is connect with a nozzle respectively, each combustion gas branch road is disposed with pipeline switching valve and difference gauge along airflow direction, unloaded pipeline and flow rate test pipeline are parallel between the pipeline switching valve and difference gauge, above-mentioned point of pressure regulator valve and shunt volume meter are separately positioned on flow rate test pipeline；Further relate to the test method using the system.The present invention can measure the gas flow of each combustion gas branch road, to clearly know the combustion gas distribution condition of each branch, furthermore, the present invention can solve the range of flowmeter in the prior art and precision is all met the requirements but because of the case where itself pressure drop is not available greatly very much, losing on pipeline along stroke pressure is overcome simultaneously, ensure that the accuracy of test result.
Description
Technical field
The present invention relates to gas-cooker field more particularly to a kind of kitchen range gas flow test macros and test method.
Background technique
Currently, the valve body (plug valve) used on kitchen range mainly has two channels and two kinds of triple channel, it is general to test and grind
In hair test, the flow measured is the total flow for flowing through valve body, can not accurately measure the combustion gas flowed out from each channel of valve body
Flow, this causes to hinder to the experiment of valve body or even gas cooker and R&D process.
Although having the flowmeter of many types on the market, such as piston type, turbine type, heat-sensitive type, quality formula, for
Measure pressure and flow all very little the case where, these flowmeters cannot meet wanting for measuring range and precision simultaneously well
It asks, i.e., precision is too low or range is again too small in the case that precision is able to satisfy in the case that measuring range is able to satisfy.In addition, removing
Outside range and precision, the pressure drop of flowmeter itself will cause influence to the flow rate test of pipeline, different types of flowmeter its
Pressure drop is different, and pressure drop crosses conference and directly results in measuring flow inaccuracy.
Summary of the invention
First technical problem to be solved by this invention is to provide one kind for the prior art and be capable of measuring range valve
The kitchen range gas flow test macro of each bypass flow.
Second technical problem to be solved by this invention be for the prior art and to provide a kind of measurement result accurate
Kitchen range gas flow test macro.
Third technical problem to be solved by this invention is to provide one kind for the prior art and be capable of measuring range valve
Each bypass flow and the accurate kitchen range flow rate test method of measurement result.
The present invention solves technical solution used by above-mentioned first and second technical problem are as follows: a kind of kitchen range combustion gas stream
Test system is measured, including total pressure regulator valve, mass flow meters, pressure gauge and the plug valve being arranged on combustion gas main line, the plug valve
On be parallel at least two combustion gas branches, each combustion gas branch is connect with a nozzle respectively, which is characterized in that each combustion gas branch
Road is disposed with pipeline switching valve and difference gauge along airflow direction, is parallel with zero load between the pipeline switching valve and difference gauge
Pipeline and flow rate test pipeline are respectively arranged with point pressure regulator valve on the flow rate test pipeline and shunt meter.
Preferably, each flow of range and the combustion gas branch where it for shunting meter matches, so as to from
The influence for shunting the pressure drop convection current measurement test result of meter itself is reduced to a certain extent.
Preferably, the number of the shunting meter of each combustion gas branch road is at least one, each shunt volume meter difference is simultaneously
It is associated on corresponding flow rate test pipeline, and shunts the number of meter and the gas flow of the combustion gas branch where it in just
Than, and the combustion gas of each combustion gas branch road only passes through one of shunting meter on the flow rate test pipeline, the shunting meter
The gas flow of range and the combustion gas branch where it matches.So no matter the size of combustion gas branch road gas flow, equal energy
By the distribution to each combustion gas branch road gas flow, and the selection to each combustion gas branch road shunt volume meter, guaranteeing range
Guarantee the precision of measurement under the premise of range simultaneously.
Further, it is preferable that the range of each shunting meter of each combustion gas branch road is different, so as to according to reality
Border needs to make more reasonable and various distribution to the distribution of the gas flow of each combustion gas branch, farthest reduces and shunts
The influence of the pressure drop of meter and the pressure drop of pipeline to test result.
Preferably, when the number of the shunting meter of the combustion gas branch is more than or equal to two, the stream of the combustion gas branch
Test tube road is measured in each shunting meter and divides setting flowmeter switching valve between pressure regulator valve, which is used for basis
The gas flow of combustion gas branch where it makes combustion gas pass through a shunting meter for corresponding to range.So as to easily according to each
The size of combustion gas branch gas flow selects suitably to shunt meter.
Preferably, three combustion gas branches are connected on the plug valve, respectively the first combustion gas branch, the second combustion gas branch
Road and third combustion gas branch, the uninterrupted of each combustion gas branch are as follows: the combustion of first combustion gas branch < the second combustion gas branch < third
Gas branch；Above-mentioned first combustion gas branch road is provided with the first shunting meter, and above-mentioned second combustion gas branch road is parallel with the second shunting
Meter and third shunt meter, and above-mentioned third combustion gas branch road is parallel with the 4th shunting meter, the 5th shunts meter and the 6th point
Flowmeter, also, the combustion gas of the second combustion gas branch road shunts meter by second or third shunts meter, third combustion gas branch road
Combustion gas by the 4th shunt meter, the 5th shunt meter and the 6th shunt meter in one of them；Wherein, the second shunt volume
The range of meter is less than the range that third shunts meter, and the above-mentioned 4th shunts meter, the 5th shunting meter and the 6th shunting meter
Range size are as follows: the 4th, which shunts meter < the 5th, shunts the shunting meter of meter < the 6th.
The present invention solves technical solution used by third technical problem are as follows: a kind of application has above-mentioned kitchen range combustion gas stream
Measure the test method of test system, it is characterised in that the following steps are included:
(1) gaseous-pressure for passing through total pressure regulator valve regulating gas main line, so that showing on pressure gauge is the specified of combustion gas
Pressure, and mass flow meters measure be combustion gas main line total flow；
(2) each combustion gas branch is switched on unloaded pipeline by pipeline switching valve, measures each branch pressure at this time respectively
Power；
(3) each combustion gas branch is switched on corresponding shunting meter by flowmeter switching valve, by adjusting total pressure regulation
Valve and each point of pressure regulator valve, so that the pressure shown on each difference gauge at this time is respectively equal to the corresponding pressure value of above-mentioned steps (2),
Each combustion gas branch road is each at this time shunts the flow that the flow shown on meter is each combustion gas branch road
Compared with the prior art, the advantages of the present invention are as follows: the present invention is by being respectively set shunting on each combustion gas branch road
Meter, to clearly know the combustion gas distribution condition of each branch, not only may be used in this way to measure the gas flow of each combustion gas branch road
Data capture method is provided for the distribution condition of existing range valve and each circulation, while can be to develop New type kitchen range in the future
Valve body, the gas flow for adjusting each branch, which distribute and verify new valve body, provides effective test method.Test method of the invention
As long as the pressure value for guaranteeing that the difference gauge of each combustion gas branch is shown in is the same, so that it may realize and flow through spray using before and after unloaded pipeline
The flow of mouth is identical, thus solve the range of flowmeter in the prior art and precision all meet the requirements but because itself pressure drop too
Not the case where not being available but greatly, while overcoming losing on pipeline along stroke pressure, it ensure that the accuracy of test result.In addition,
Whether equal can let out in the present invention by comparing total flow and the flow of each combustion gas branch and to judge that fuel gas pipeline whether there is
Leakage problem avoids the generation of gas leakage accident to find the problem in time.
Detailed description of the invention
Fig. 1 is the schematic diagram of kitchen range gas flow test macro in the embodiment of the present invention.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
As shown in Figure 1, a kind of kitchen range gas flow test macro, including be arranged on combustion gas main line 1 total pressure regulator valve 2,
Mass flow meters 3, pressure gauge 4 and plug valve 5, are parallel with three combustion gas branches on the plug valve 5, and each combustion gas branch is respectively with one
A nozzle 101 connects.
Further, each above-mentioned combustion gas branch road is disposed with pipeline switching valve 61 and difference gauge 81 along airflow direction, should
It is parallel with unloaded pipeline 10 and flow rate test pipeline between pipeline switching valve 61 and difference gauge 81, is arranged on the flow rate test pipeline
There is pressure regulator valve 7 and shunts meter.As it can be seen that the test macro in the present invention is removed and measures the total of combustion gas main line 1 by mass flow meters 3
Outside flow, the gas flow of each combustion gas branch road can also be measured by the branch flowmeter in each combustion gas branch, thus clear
Know the combustion gas distribution condition of each branch, not only can provide number in this way for the distribution condition of existing range valve and each circulation
According to acquisition methods, while it can distribute for developing the gas flow of New type kitchen range valve body, each branch of adjustment in the future and verify new valve body
Effective test method is provided.
Further, each flow of range and the combustion gas branch where it for shunting meter matches, so as to from
The influence for shunting the pressure drop convection current measurement test result of meter itself is reduced to a certain extent.Preferably, each combustion gas branch road
The number of shunting meter be at least one, each shunt volume meter is connected in parallel on respectively on corresponding flow rate test pipeline, and is shunted
The number of meter and the gas flow of the combustion gas branch where it are proportional, and the combustion gas of each combustion gas branch road only passes through the flow
One of shunting meter of testing tube road, the gas flow phase of the range of the shunting meter and the combustion gas branch where it
Match, and the range of each shunting meter of each combustion gas branch road is different.So no matter combustion gas branch road gas flow
Size, can by the selection of distribution and each combustion gas branch road shunt volume meter to each combustion gas branch road gas flow,
Guarantee the precision for guaranteeing measurement under the premise of range ability simultaneously.
Preferably, when the number of the shunting meter of the combustion gas branch is more than or equal to two, the flow of the combustion gas branch
Testing tube road is in each shunting meter and setting flowmeter switching valve 62, flowmeter switching valve 62 between pressure regulator valve 7 is divided to be used for
Combustion gas is set to pass through a shunting meter of corresponding range according to the gas flow of the combustion gas branch where it.
Specifically, three combustion gas branches, respectively the first combustion gas branch 11, are connected on the plug valve 5 of the present embodiment
Two combustion gas branches 12 and third combustion gas branch 13, the uninterrupted of each combustion gas branch are as follows: 11 < second of the first combustion gas branch combustion
12 < third combustion gas branch 13 of gas branch.The first shunting is provided on the flow rate test pipeline 111 of above-mentioned first combustion gas branch 11
Meter 81 is parallel with the second shunting meter 82 and third shunt volume on the flow rate test pipeline 121 of above-mentioned second combustion gas branch 12
83 are counted, the 4th shunting meter the 84, the 5th is parallel on the flow rate test pipeline 131 of above-mentioned third combustion gas branch 13 and shunts meter 85
And the 6th shunt meter 86, also, the combustion gas on the second combustion gas branch 12 shunts meter 82 or third by second and shunts meter
83, combustion gas on third combustion gas branch 13 shunts meter the 84, the 5th by the 4th and shunts meter 85 and the 6th shunt in meter 86
One of them；Wherein, the second range for shunting meter 82 is less than the range that third shunts meter 83, and the above-mentioned 4th shunts meter
84, the range size of the 5th shunting meter 85 and the 6th shunting meter 86 are as follows: the 4th, which shunts 84 < the 5th of meter, shunts meter 85
< the 6th shunts meter 86.Also, divide on the flow rate test pipeline 121,131 of the second combustion gas branch 12 and third combustion gas branch 13
It is not provided with a flowmeter switching valve 62.
The test method of kitchen range gas flow test macro is as follows in the present embodiment:
(1) by the gaseous-pressure on total 2 regulating gas main line 1 of pressure regulator valve so that shown on pressure gauge 4 be combustion gas volume
Constant-pressure, and mass flow meters 3 measure be combustion gas main line 1 total flow Q.
(2) each combustion gas branch 11,12,13 is switched on unloaded pipeline 10 by pipeline switching valve 61, is measured respectively
Each branch pressure at this time, the difference gauge 81 on the first combustion gas branch 11, the second combustion gas branch 12 and third combustion gas branch 13 are aobvious
The pressure shown is respectively P1, P2 and P3, P1, P2 and the P3 be respectively each combustion gas branch nozzle 101 before pressure.
(3) each combustion gas branch is switched on corresponding shunting meter by flowmeter switching valve 62, by adjusting total adjust
Pressure valve 2, each point of pressure regulator valve 7, so that pressure P1 ', the P2 ' and P3 ' that show on each difference gauge 81 at this time are respectively equal to above-mentioned steps
(2) corresponding pressure value, i.e. P1 '=P1, P2 '=P2, P3 '=P3, each each shunt in combustion gas branch road shows on meter at this time
Flow Q1, Q2 and Q3, the as flow of each combustion gas branch road.
Therefore as long as the pressure value for guaranteeing that the difference gauge 81 of each combustion gas branch is shown in the present invention is the same, so that it may
Realization is identical using the flow for flowing through nozzle 101 before and after unloaded pipeline 10, to solve the range of flowmeter in the prior art
The case where all meeting the requirements with precision but not being available greatly very much because of itself pressure drop, while overcoming damaging on pipeline along stroke pressure
It loses, ensure that the accuracy of test result.In addition, in the present invention can by comparing total flow Q and each combustion gas branch flow and
Whether (i.e. the sum of Q1, Q2 and Q3) be equal to avoid to judge that fuel gas pipeline whether there is leakage problem to find the problem in time
The generation of gas leakage accident.
Claims (7)
1. a kind of kitchen range gas flow test macro, including total pressure regulator valve (2), the mass flow meters being arranged on combustion gas main line (1)
(3), pressure gauge (4) and plug valve (5) are parallel at least two combustion gas branches, each combustion gas branch difference on the plug valve (5)
It is connect with a nozzle (101), which is characterized in that each combustion gas branch road is disposed with pipeline along airflow direction respectively and cuts
Valve (61) and difference gauge (81) are changed, is parallel with unloaded pipeline (10) and flow between the pipeline switching valve (61) and difference gauge (81)
Pipeline is tested, above-mentioned point of pressure regulator valve (7) and shunt volume meter are separately positioned on flow rate test pipeline.
2. kitchen range gas flow test macro as described in claim 1, which is characterized in that it is each it is described shunt meter range with
The flow of combustion gas branch where it matches.
3. kitchen range gas flow test macro as claimed in claim 2, which is characterized in that the shunting of each combustion gas branch road
The number of meter is at least one, and each shunt volume meter is connected in parallel on respectively on corresponding flow rate test pipeline, and shunts meter
Number and the gas flow of the combustion gas branch where it are proportional, and the combustion gas of each combustion gas branch road only passes through the flow rate test pipe
One of shunting meter of road, the range of the shunting meter and the gas flow of the combustion gas branch where it match.
4. kitchen range gas flow test macro as claimed in claim 3, which is characterized in that each point of each combustion gas branch road
The range of flowmeter is different.
5. kitchen range gas flow test macro as claimed in claim 3, which is characterized in that when the shunt volume of the combustion gas branch
When the number of meter is more than or equal to two, on the flow rate test pipeline of the combustion gas branch in each shuntings meter with divide pressure regulator valve (7) it
Between flowmeter switching valve (62) are set, the flowmeter switching valve (62) according to the gas flow of the combustion gas branch where it for making
Combustion gas passes through a shunting meter of corresponding range.
6. kitchen range gas flow test macro as claimed in any one of claims 1 to 5, which is characterized in that the plug valve (5)
On be connected with three combustion gas branches, respectively the first combustion gas branch (11), the second combustion gas branch (12) and third combustion gas branch
(13), the uninterrupted of each combustion gas branch are as follows: first combustion gas branch (11) < the second combustion gas branch (12) < third combustion gas branch
(13)；
It is provided with the first shunting meter (81) on above-mentioned first combustion gas branch (11), is parallel on above-mentioned second combustion gas branch (12)
Second shunts meter (82) and third shunting meter (83), and the 4th shunting meter is parallel on above-mentioned third combustion gas branch (13)
(84), the 5th meter (85) and the 6th shunting meter (86) are shunted, also, the combustion gas on the second combustion gas branch (12) passes through second
Shunt meter (82) or third and shunt meter (83), the combustion gas on third combustion gas branch (13) by the 4th shunt meter (84),
5th shunt meter (85) and the 6th shunt meter (86) in one of them；
Wherein, the second range for shunting meter (82) is less than the range that third shunts meter (83), and the above-mentioned 4th shunts meter
(84), the range size of the 5th shunting meter (85) and the 6th shunting meter (86) are as follows: the 4th shunts the 5th point of meter (84) <
Flowmeter (85) < the 6th shunts meter (86).
7. a kind of application has the test method of kitchen range gas flow test macro as claimed in any one of claims 1 to 5, special
Sign be the following steps are included:
(1) pass through the gaseous-pressure on total pressure regulator valve (2) regulating gas main line (1), so that showing on pressure gauge (4) is that combustion gas is dry
The rated pressure on road (1), and mass flow meters (3) measure be combustion gas main line (1) total flow；
(2) each combustion gas branch is switched on unloaded pipeline (10) by pipeline switching valve (61), measures each at this time respectively
Road pressure；
(3) each combustion gas branch is switched on corresponding shunting meter by flowmeter switching valve (62), by adjusting total pressure regulation
Valve (2), each point of pressure regulator valve (7), so that the pressure shown on each difference gauge (81) at this time is respectively equal to the correspondence of above-mentioned steps (2)
Pressure value, each combustion gas branch road is each at this time shunts the flow that the flow shown on meter is each combustion gas branch road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711049701.4A CN109724659B (en) | 2017-10-31 | 2017-10-31 | Gas flow testing system and testing method for kitchen range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711049701.4A CN109724659B (en) | 2017-10-31 | 2017-10-31 | Gas flow testing system and testing method for kitchen range |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109724659A true CN109724659A (en) | 2019-05-07 |
| CN109724659B CN109724659B (en) | 2024-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711049701.4A Active CN109724659B (en) | 2017-10-31 | 2017-10-31 | Gas flow testing system and testing method for kitchen range |
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| CN (1) | CN109724659B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271605A (en) * | 2020-04-03 | 2020-06-12 | 上海熊猫机械(集团)有限公司 | Pipe network leakage detection system |
| CN112096695A (en) * | 2020-09-30 | 2020-12-18 | 潍柴动力股份有限公司 | Flow monitoring system and flow monitoring method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1019634A (en) * | 1996-07-08 | 1998-01-23 | Tokyo Gas Co Ltd | Gas flow measuring device |
| JP2008286812A (en) * | 2008-09-05 | 2008-11-27 | Tadahiro Omi | Differential flow meter |
| WO2016059132A1 (en) * | 2014-10-14 | 2016-04-21 | NSB Niederelbe Schiffahrtsgesellschaft mbH & Co. KG | Bunker measuring system |
| CN105699062A (en) * | 2016-02-22 | 2016-06-22 | 合肥通用机械研究院 | Flow resistance test system of valve flow and method for performing little micro flow test by using the same |
| CN106872155A (en) * | 2017-01-20 | 2017-06-20 | 合肥通用机械研究院 | A kind of performance of exhaust valve test system and method for testing |
-
2017
- 2017-10-31 CN CN201711049701.4A patent/CN109724659B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1019634A (en) * | 1996-07-08 | 1998-01-23 | Tokyo Gas Co Ltd | Gas flow measuring device |
| JP2008286812A (en) * | 2008-09-05 | 2008-11-27 | Tadahiro Omi | Differential flow meter |
| WO2016059132A1 (en) * | 2014-10-14 | 2016-04-21 | NSB Niederelbe Schiffahrtsgesellschaft mbH & Co. KG | Bunker measuring system |
| CN105699062A (en) * | 2016-02-22 | 2016-06-22 | 合肥通用机械研究院 | Flow resistance test system of valve flow and method for performing little micro flow test by using the same |
| CN106872155A (en) * | 2017-01-20 | 2017-06-20 | 合肥通用机械研究院 | A kind of performance of exhaust valve test system and method for testing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271605A (en) * | 2020-04-03 | 2020-06-12 | 上海熊猫机械(集团)有限公司 | Pipe network leakage detection system |
| CN112096695A (en) * | 2020-09-30 | 2020-12-18 | 潍柴动力股份有限公司 | Flow monitoring system and flow monitoring method |
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| Publication number | Publication date |
|---|---|
| CN109724659B (en) | 2024-01-16 |
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