CN209387106U - Gas meter, flow meter mesolow control experiment device - Google Patents
Gas meter, flow meter mesolow control experiment device Download PDFInfo
- Publication number
- CN209387106U CN209387106U CN201920007830.5U CN201920007830U CN209387106U CN 209387106 U CN209387106 U CN 209387106U CN 201920007830 U CN201920007830 U CN 201920007830U CN 209387106 U CN209387106 U CN 209387106U
- Authority
- CN
- China
- Prior art keywords
- groups
- standard scale
- parallel
- valve
- gas
- Prior art date
- 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.)
- Active
Links
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model discloses the gas meter, flow meter mesolow control experiment devices of gas meter, flow meter technical field, including power section, power section includes two groups of lobe pumps and the first pneumatic ball valve, it is connected in parallel between two groups of lobe pumps, and the air inlet and air outlet of two groups of lobe pumps are in series with the first pneumatic ball valve, water cooling segment is electrically connected on the right side of power section, water cooling segment includes the gentle line cooling system of outdoor cooling tower, outdoor cooling tower is connect with two groups of lobe pumps respectively, two groups of lobe pumps are in parallel with gas circuit cooling system, gas circuit cooling system is connect with outdoor cooling tower；The utility model filters out impurity by T-type filter, it avoids making damage to the first standard scale and the second standard scale, the model specification of first standard scale and the second standard scale is different, by opening the 5th direct uniform effluent of by-passing valve to outdoor, six groups of checklist pipelines only have bore different, data analysis result is not influenced by site environment, and error is small, and accuracy is high.
Description
Technical field
The utility model relates to gas meter, flow meter technical fields, and in particular to gas meter, flow meter mesolow control experiment device.
Background technique
Currently, industrial and commercial table week examines workflow are as follows: receive table tool-disassembly, cleaning, maintenance, replacement battery and bearing, group
Dress-calibrating not can be carried out the process first examined and determine and repaired afterwards, and then can not obtain combustion since old table table chamber dust, dirt are more
Performance indicator and error information before gas meter calibrating are unable to quantitative analysis table tool week inspection front and back measurement error, the inspection of effective evaluation week
It works and has the importance accurately measured to holding table.Group company constantly brings forth new ideas on new material, new process, improves, wherein
Gas meter, flow meter stream Comparability test in fact has been carried out in various regions, is analyzed according to recorded Comparability test data in recent years, due to on-the-spot testing ring
Border and changeable with gas situation, influence factor is more, and data analysis result is caused to have certain difference.Based on this, the utility model
Gas meter, flow meter mesolow control experiment device is devised, to solve the above problems.
Utility model content
The purpose of this utility model is to provide gas meter, flow meter mesolow control experiment devices, to solve in above-mentioned background technique
The existing apparatus of proposition is changeable due to on-the-spot testing environment and with gas situation, and influence factor is more, and data analysis result is caused to have
The problem of certain difference.
To achieve the above object, the utility model provides the following technical solutions: gas meter, flow meter mesolow control experiment device, packet
Power section is included, the power section includes two groups of lobe pumps and the first pneumatic ball valve, and parallel connection connects between lobe pump described in two groups
It connects, and the air inlet and air outlet of two groups of lobe pumps are in series with the first pneumatic ball valve, the right side of the power section electrically connects
It is connected to water cooling segment, the water cooling segment includes the gentle line cooling system of outdoor cooling tower, the outdoor cooling tower difference
It is connect with two groups of lobe pumps, lobe pump described in two groups is in parallel with gas circuit cooling system, and the gas circuit cooling system and outdoor are cooling
Tower connects, and is electrically connected with pressurized part on the right side of the water cooling segment, the pressurized part includes T-type filter, first
By-passing valve, air accumulator, the second by-passing valve, air compressor machine, third by-passing valve and first pressure regulating valve, on the gas circuit cooling system
It is electrically connected with T-type filter, the air inlet of the T-type filter is parallel with the first by-passing valve, first by-passing valve and storage
Gas tank, the second by-passing valve and air compressor machine series connection, the air accumulator is in parallel with third by-passing valve and first pressure regulating valve, the T
The gas outlet of type filter is parallel with the first standard scale and the second standard scale respectively, first standard scale and the second standard scale
Air inlet and air outlet are in series with the second pneumatic ball valve, and the gas outlet of first standard scale and the second standard scale is parallel with
The gas outlet of second pressure regulating valve and the 4th by-passing valve, first standard scale and the second standard scale is parallel with six groups of checklists
Pipeline, checklist pipeline described in six groups is in parallel with the loop of power section, includes two groups the on checklist pipeline described in six groups
Three pneumatic ball valves, third pressure-regulating valve, three groups of checklist installation sites, three groups of pressure-detecting devices and temperature-detecting device,
Third pneumatic ball valve described in two groups is located at the left and right ends of checklist pipeline, connects between third pneumatic ball valve described in two groups
There are three groups of checklist installation sites, is parallel with third pressure-regulating valve and temperature detection respectively on third pneumatic ball valve described in two groups
Device, the installation of checklist described in three groups are parallel with pressure-detecting device, the outlet of the right side third pneumatic ball valve on site
Mouth is parallel with the 5th by-passing valve.
Preferably, the outdoor cooling tower air inlet is connected to air.
Preferably, the reservoir pressure is adjustable.
Preferably, it is respectively equipped with pressure, temperature and signal sampling device on first standard scale and the second standard scale,
And first standard scale and the second standard scale be electrically connected with total system.
Preferably, the 5th by-passing valve parallel connection described in six groups concentrates release to outdoor.
Compared with prior art, the utility model has the beneficial effects that the utility model passes through between two groups of lobe pumps simultaneously
Connection connection, is independent of each other so that working between two groups of lobe pumps, and according to traffic conditions in detection, selection is beaten when flow is small
A lobe pump is opened, two groups of lobe pumps of ability are opened in the excessive situation of flow, and outdoor cooling tower is connect with two groups of lobe pumps respectively,
Be electrically connected with T-type filter on gas circuit cooling system, impurity filtered out by T-type filter, avoid to the first standard scale and
Second standard scale makes damage, and the air inlet of T-type filter is parallel with the first by-passing valve, and air compressor machine carries out aerating, storage to air accumulator
Pressure in gas tank can carry out emptying release processing by adjusting third by-passing valve and first pressure regulating valve, make in conjunction with air compressor machine
The pressure in air accumulator can be set, the model specification of the first standard scale and the second standard scale is different, by opening the
The direct uniform effluent of five by-passing valves is to outdoor, and six groups of checklist pipelines only have bore different, and data analysis result is not by live ring
Border influences, and error is small, and accuracy is high.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the utility model embodiment, make required for being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.
FIG. 1 is a schematic structural view of the utility model.
Fig. 2 is the utility model " low load with strong power " control experiment schematic diagram.
Fig. 3 is the utility model table tool week inspection front and back control experiment schematic diagram.
In attached drawing, parts list represented by the reference numerals are as follows:
1 lobe pump 2 of power section, the first pneumatic ball valve 3, water cooling segment 4, outdoor cooling tower 5, gas circuit cooling system 6,
Pressurized part 7, T-type filter 8, the first by-passing valve 9, air accumulator 10, the second by-passing valve 11, air compressor machine 12, third by-passing valve 13,
First pressure regulating valve 14, the first standard scale 15, the second standard scale 16, the second pneumatic ball valve 17, second pressure regulating valve 18, the
Four by-passing valves 19, checklist pipeline 20, third pneumatic ball valve 21, third pressure-regulating valve 22, checklist install site 23, pressure
Detection device 24, temperature-detecting device 25, the 5th by-passing valve 26.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
All other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-3 is please referred to, the utility model provides a kind of technical solution: gas meter, flow meter mesolow control experiment device, including
Power section 1, power section 1 include two groups of lobe pumps 2 and the first pneumatic ball valve 3, are connected in parallel between two groups of lobe pumps 2, and
The air inlet and air outlet of two groups of lobe pumps 2 are in series with the first pneumatic ball valve 3, and the right side of power section 1 is electrically connected with water
Cooling segment 4, water cooling segment 4 include the outdoor gentle line cooling system 6 of cooling tower 5, outdoor cooling tower 5 respectively with two groups of sieve
2 connection of thatch pump, two groups of lobe pumps 2 are in parallel with gas circuit cooling system 6, and gas circuit cooling system 6 is connect with outdoor cooling tower 5, water cooling
But the right side of part 4 is electrically connected with pressurized part 7, and pressurized part 7 includes T-type filter 8, the first by-passing valve 9, air accumulator
10, the second by-passing valve 11, air compressor machine 12, third by-passing valve 13 and first pressure regulating valve 14 electrically connect on gas circuit cooling system 6
It is connected to T-type filter 8, the air inlet of T-type filter 8 is parallel with the first by-passing valve 9, the first by-passing valve 9 and air accumulator 10, second
By-passing valve 11 and air compressor machine 12 are connected, and air accumulator 10 is in parallel with third by-passing valve 13 and first pressure regulating valve 14, T-type filtering
The gas outlet of device 8 is parallel with the first standard scale 15 and the second standard scale 16 respectively, the first standard scale 15 and the second standard scale 16
Air inlet and air outlet are in series with the second pneumatic ball valve 17, and the gas outlet of the first standard scale 15 and the second standard scale 16 is in parallel
There are a second pressure regulating valve 18 and the 4th by-passing valve 19, the gas outlet of the first standard scale 15 and the second standard scale 16 is parallel with six
Group checklist pipeline 20, six groups of checklist pipelines 20 are in parallel with the loop of power section 1, include on six groups of checklist pipelines 20
22, three groups of two groups of third pneumatic ball valves 21, third pressure-regulating valve checklists install 23, three groups of site, 24 and of pressure-detecting device
Temperature-detecting device 25, two groups of third pneumatic ball valves 21 are located at the left and right ends of checklist pipeline 20, and two groups of thirds are pneumatic
It is in series with three groups of checklist installation sites 23 between ball valve 21, is parallel with third pressure respectively on two groups of third pneumatic ball valves 21
Regulating valve 22 and temperature-detecting device 25, are parallel with pressure-detecting device 24 on three groups of checklists installation sites 23, right side the
The gas outlet of three pneumatic ball valves 21 is parallel with the 5th by-passing valve 26.
Wherein, outdoor 5 air inlet of cooling tower is connected to air, 10 pressure adjustable of air accumulator, the first standard scale 15 and the second mark
Pressure, temperature and signal sampling device are respectively equipped on quasi- table 16, and the first standard scale 15 and the second standard scale 16 are electrically
It is connected with total system, six groups of the 5th by-passing valves 26 are in parallel to concentrate release to outdoor.
One concrete application of the present embodiment are as follows: be connected in parallel between two groups of lobe pumps 2, and the air inlet of two groups of lobe pumps 2
Mouth and gas outlet are in series with the first pneumatic ball valve 3, are independent of each other so that working between two groups of lobe pumps 2, flow according in detection
Situation is measured, a lobe pump 2 is opened in selection when flow is small, and two groups of lobe pumps 2 of ability are opened in the excessive situation of flow, room
Outer cooling tower 5 is connect with two groups of lobe pumps 2 respectively, and two groups of lobe pumps 2 are in parallel with gas circuit cooling system 6, gas circuit cooling system 6 with
Outdoor cooling tower 5 connects, and water enters from outdoor cooling tower 5, is cooled again by the outflow of gas circuit cooling system 6, gas circuit cooling system
It is electrically connected with T-type filter 8 on system 6, the gas outlet of T-type filter 8 is parallel with the first standard scale 15 and the second standard respectively
Table 16 filters out impurity by T-type filter 8, avoids making the first standard scale 15 and the second standard scale 16 damage, T-type filtering
The air inlet of device 8 is parallel with the first by-passing valve 9, and the first by-passing valve 9 is gone here and there with air accumulator 10, the second by-passing valve 11 and air compressor machine 12
Connection, air accumulator 10 is in parallel with third by-passing valve 13 and first pressure regulating valve 14, and air compressor machine 12 carries out aerating, storage to air accumulator 10
Pressure in gas tank 10 can carry out emptying release processing by adjusting third by-passing valve 13 and first pressure regulating valve 14, in conjunction with sky
Press 12 makes that the pressure in air accumulator 10 can be set, the air inlet of the first standard scale 15 and the second standard scale 16 and go out
Port is in series with the second pneumatic ball valve 17, and the gas outlet of the first standard scale 15 and the second standard scale 16 is parallel with second pressure
The model specification of regulating valve 18 and the 4th by-passing valve 19, the first standard scale 15 and the second standard scale 16 is different, by pressure,
Temperature and signal are sampled detection, and will test result and summarize and send out in total system, pass through and open and close second
Pneumatic ball valve 17 switches over the first standard scale 15 and the second standard scale 16, and second pressure regulating valve 18 can be to pressure in pipeline
Release is carried out, the 4th by-passing valve 19 is opened and reduces flow in pipeline, it is effectively anti-blocking, it include two groups on six groups of checklist pipelines 20
Third pneumatic ball valve 21,22, three groups of checklist installation 23, three groups of site pressure-detecting devices 24 of third pressure-regulating valve and temperature
Detection device 25 is spent, two groups of third pneumatic ball valves 21 are located at the left and right ends of checklist pipeline 20, two groups of third Pneumatic balls
It is in series with three groups of checklist installation sites 23 between valve 21, is parallel with the adjusting of third pressure respectively on two groups of third pneumatic ball valves 21
Valve 22 and temperature-detecting device 25, three groups of checklists are installed and are parallel with pressure-detecting device 24, right side third gas on sites 23
The gas outlet of dynamic ball valve 21 is parallel with the 5th by-passing valve 26, installs checklist in checklist installation site 23, to checklist into
Row checks that third pressure-regulating valve 22 carries out manual exhaust, by opening the direct uniform effluent of the 5th by-passing valve 26 to outdoor, six
Group checklist pipeline 20 only has bore different.
Using air as medium, field pipes pressure is simulated, table tool is installed in series on pipeline, by flexibly changing temperature
The service conditions such as degree, pressure, mounting means obtain the flow-rate ratio under different situations to error.Pass through the analysis to experimental data
With judgement, to instruct the development of related real work.
Experimental procedure week inspection front and back comparison:
According to gas user gas, old city distribution situation, it is received to inspection center week inspection table, first carry out part or
Bulge test, obtain gas meter, flow meter week inspection before continuous data, then repair, clean, examine and determine, so obtain table tool week inspection before
Continuous data difference afterwards.
It is compared under the conditions of varying environment:
It is tested under different temperatures；
It is tested under different flow；
Test (horizontal, vertical) under different installation sites；
It is tested under different pipeline pressures.
Type Selection Test:
For the same flow, the gas meter, flow meter of 5~7 different bores is installed respectively, makes to set flow in 5~7 combustion gas
Flow section when carrying out long of the small flow of table, 10%max, 20%Qmax, 40%Qmax, 80%Qmax, 100%max, super flow
Between run, record and analyze data, analysis " low load with strong power " is influenced caused by the Biao Ju First Astronautic Research Institute for Measurement and Test, provides number for table tool type selecting
According to theories integration.
Volume read-out test:
To table tool non-refuelling, refuel by regulation, add oil, it is few refuel when test, analyze oiling situation
To influence caused by table tool operation.
Internal structural failure degree serious table tool is tested:
The gas meter, flow meter of table chamber, impeller, waist wheel well damage is tested before maintenance, analytical table has impeller, waist wheel etc.
Influence degree caused by the badly damaged First Astronautic Research Institute for Measurement and Test Biao Ju of critical component.
Civilian watch test:
(1) an individually designed gas circuit, is able to achieve being horizontally mounted for two DN20~DN25D lobe pumps 22；
(2) steel construction line end connects hose, carries out more diaphragm gas meter series connection in hose end；
(3) hose gas circuit end is able to enter closed conduct, pressure debugging range are as follows: and normal pressure 101.325kPa~
The resolution ratio of 105kPa, pressure-regulating valve need to be better than 0.2kPa.
(4) this pipeline need to realize the washability of closing Yu non-close pipeline.
(1) " low load with strong power " control experiment
Two are chosen by maintenance, the turbine table of assay approval, range of flow is (8~160) m3/ h, in each flow point
It is compared with standard scale, records the integrated flow in same time, finally analyze the error of each flow point.Pass through comparison data
Analysis, Xin Biao or just carried out week inspection turbine flowmeter lower than regulation flux lower limit flow point operation when, measurement error
It is partially negative serious, 5m3Maximum negative error reaches -10.2% when/h, and with the reduction of flow, error can become larger rapidly, 3m3When/h
For two table tool integrated fluxs compared with standard scale, maximum negative error reaches -17.2%, -25.7%, is unable to satisfy metering requirements.
(2) table tool week inspection front and back control experiment
Table, which has, is compared experiment by device before week inspection, and record sheet tool does not carry out before periodic maintenance is examined and determine and standard scale
Integrated flow metering compare error information, then table tool is dismantled, is cleaned, replaces the work such as bearing and battery, assembling,
It is mounted on after assay approval on control experiment device and continues control experiment, the accumulative stream after record sheet tool week inspection with standard scale
Meter amount compares error information.
From Fig. 2-3 it can be seen that
1) each flow point tolerance has biggish improvement after week inspection, and especially lower-capacity point error change is larger,
The error change of week inspection front and back is up to 11.8%；
2) all there is different degrees of negative error, up to -10% or so below 20% flow point in table tool；
3) exclusion table tool waist wheel is stuck, deforms, outside the serious biggish mechanical breakdown of bearing damage, and lobe pump 2 is normally transported
Under row state, its measurement error is relatively stable in 40%~80% flow section, and error linear rate of change is slower, can be longer
Time in keep good meter characteristic.
It is tested by being compared, demonstrates drawback of turbine table " low load with strong power " phenomenon in table tool metering process,
The inspection work of valid certificates gas meter, flow meter week has the importance accurately measured to holding table, has type selecting for later period table, effectively formulates table
Have the measurements such as all inspection plans and provides most important theories data.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one of the utility model
In embodiment or example.In the present specification, schematic expression of the above terms be not necessarily referring to identical embodiment or
Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiment or examples
In can be combined in any suitable manner.
The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously
There is no the details that detailed descriptionthe is all, also not limiting the utility model is only the specific embodiment.Obviously, according to this theory
The content of bright book can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably
The principles of the present invention and practical application are explained, so that skilled artisan be enable to better understand and utilize this
Utility model.The utility model is limited only by the claims and their full scope and equivalents.
Claims (5)
1. gas meter, flow meter mesolow control experiment device, including power section (1), it is characterised in that: the power section (1) includes
Two groups of lobe pumps (2) and the first pneumatic ball valve (3), lobe pump described in two groups are connected in parallel between (2), and two groups of lobe pumps (2)
Air inlet and air outlet be in series with the first pneumatic ball valve (3), it is cooling that water is electrically connected on the right side of the power section (1)
Partially (4), the water cooling segment (4) include outdoor cooling tower (5) gentle line cooling system (6), the outdoor cooling tower (5)
It is connect respectively with two groups of lobe pumps (2), lobe pump described in two groups (2) is in parallel with gas circuit cooling system (6), the gas circuit cooling system
System (6) is connect with outdoor cooling tower (5), is electrically connected with pressurized part (7) on the right side of the water cooling segment (4), described to add
Laminate section (7) includes T-type filter (8), the first by-passing valve (9), air accumulator (10), the second by-passing valve (11), air compressor machine (12),
Third by-passing valve (13) and first pressure regulating valve (14) are electrically connected with T-type filter on the gas circuit cooling system (6)
(8), the air inlet of the T-type filter (8) is parallel with the first by-passing valve (9), first by-passing valve (9) and air accumulator
(10), the second by-passing valve (11) and air compressor machine (12) series connection, the air accumulator (10) and third by-passing valve (13) and first pressure
Regulating valve (14) is in parallel, and the gas outlet of the T-type filter (8) is parallel with the first standard scale (15) and the second standard scale respectively
(16), the air inlet and air outlet of first standard scale (15) and the second standard scale (16) are in series with the second pneumatic ball valve
(17), the gas outlet of first standard scale (15) and the second standard scale (16) is parallel with second pressure regulating valve (18) and
The gas outlet of four by-passing valves (19), first standard scale (15) and the second standard scale (16) is parallel with six groups of checklist pipelines
(20), checklist pipeline (20) described in six groups is in parallel with the loop of power section (1), on checklist pipeline (20) described in six groups
Including two groups of third pneumatic ball valves (21), third pressure-regulating valve (22), three groups of checklist installations site (23), three groups of pressure inspections
It surveys device (24) and temperature-detecting device (25), third pneumatic ball valve (21) described in two groups is located at checklist pipeline (20)
Left and right ends are in series with three groups of checklists installations site (23) between third pneumatic ball valve (21) described in two groups, the described in two groups
Third pressure-regulating valve (22) and temperature-detecting device (25), checklist described in three groups are parallel on three pneumatic ball valves (21) respectively
It is parallel with pressure-detecting device (24) in installation site (23), the gas outlet of the right side third pneumatic ball valve (21) is parallel with
5th by-passing valve (26).
2. gas meter, flow meter mesolow control experiment device according to claim 1, it is characterised in that: the outdoor cooling tower
(5) air inlet is connected to air.
3. gas meter, flow meter mesolow control experiment device according to claim 1, it is characterised in that: air accumulator (10) pressure
Power is adjustable.
4. gas meter, flow meter mesolow control experiment device according to claim 1, it is characterised in that: first standard scale
(15) and on the second standard scale (16) pressure, temperature and signal sampling device, and the first standard scale (15) and are respectively equipped with
Two standard scales (16) are electrically connected with total system.
5. gas meter, flow meter mesolow control experiment device according to claim 1, it is characterised in that: the 5th bypass described in six groups
Valve (26) is in parallel to concentrate release to outdoor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920007830.5U CN209387106U (en) | 2019-01-03 | 2019-01-03 | Gas meter, flow meter mesolow control experiment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920007830.5U CN209387106U (en) | 2019-01-03 | 2019-01-03 | Gas meter, flow meter mesolow control experiment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209387106U true CN209387106U (en) | 2019-09-13 |
Family
ID=67863619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920007830.5U Active CN209387106U (en) | 2019-01-03 | 2019-01-03 | Gas meter, flow meter mesolow control experiment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209387106U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113310541A (en) * | 2021-06-18 | 2021-08-27 | 重庆电子工程职业学院 | Password type gas meter based on electromagnetic induction principle |
-
2019
- 2019-01-03 CN CN201920007830.5U patent/CN209387106U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113310541A (en) * | 2021-06-18 | 2021-08-27 | 重庆电子工程职业学院 | Password type gas meter based on electromagnetic induction principle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204346744U (en) | Air cleaner particle counting classification efficiency test board | |
| CN201803832U (en) | Tester using acoustic emission signals to detect valve leakage | |
| CN202075022U (en) | Online real-flow calibrating device for small natural gas flowmeter | |
| CN209387106U (en) | Gas meter, flow meter mesolow control experiment device | |
| CN109383847B (en) | Auxiliary power device fuel nozzle testboard | |
| CN201568403U (en) | Oil contamination on-line monitoring feedback device for hydraulic system of wind turbine generator system | |
| CN206656945U (en) | A kind of test system for the cleaner filter efficiency for simulating vehicle-mounted operating mode | |
| CN217786309U (en) | Continuously-running parallel double-station gas flowmeter calibrating device | |
| CN201062713Y (en) | Device for simulating gas storage and peak regulation | |
| CN206832780U (en) | A kind of wasted nickel catalyst device | |
| CN214066499U (en) | Flow resistance test bench | |
| CN215338512U (en) | Calibrating device for orifice flowmeter | |
| CN109186857A (en) | A kind of interface module for pressure measurement | |
| CN106918451B (en) | System for testing oil-gas separation efficiency and test method thereof | |
| CN201122442Y (en) | Nuclear power plant technique penetration member sealing property integrated testing apparatus | |
| CN209181885U (en) | A kind of calibration equipment based on nuclear power plant's penetration piece test flow | |
| CN210533692U (en) | Test system for fuel nozzle performance test | |
| CN209311153U (en) | Low-level (stack-gas) economizer differential pressure measuring point sampling line anti-block apparatus | |
| CN111043105A (en) | High-power hydraulic comprehensive test bed and test method thereof | |
| CN207436196U (en) | A kind of device on pipeline | |
| CN211121985U (en) | Turbojet engine fuel oil flow distribution detection system | |
| CN114017423B (en) | Comprehensive test bed for hydraulic component and test method thereof | |
| CN220418607U (en) | Gas meter detection device and system | |
| CN201757662U (en) | Gas meter actual medium durability testing machine | |
| CN108302027B (en) | Intelligent measurement and control device and measurement and control method for vacuum pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |