CN206656850U - A kind of Dynamic Characteristics of Non-Return Valve test device - Google Patents
A kind of Dynamic Characteristics of Non-Return Valve test device Download PDFInfo
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- CN206656850U CN206656850U CN201720297445.XU CN201720297445U CN206656850U CN 206656850 U CN206656850 U CN 206656850U CN 201720297445 U CN201720297445 U CN 201720297445U CN 206656850 U CN206656850 U CN 206656850U
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Abstract
A kind of Dynamic Characteristics of Non-Return Valve test device, including water pump, control valve, Pneumatic butterfly valve one, Pneumatic butterfly valve two, electromagnetic flowmeter, sensor, vacuum tank, air tank, tested check-valves, water pump, vacuum tank connects to form circulation loop one with control valve by pipeline, tested check-valves, electromagnetic flowmeter, control valve connects to form circulation loop two with the pneumatic valve of butterfly one by pipeline, one end of Pneumatic butterfly valve two is connected by pipeline with circulation loop two, interface is arranged between Pneumatic butterfly valve one and electromagnetic flowmeter, the other end of Pneumatic butterfly valve two is connected with air tank, sensor is arranged on the both ends of tested check-valves, the present apparatus also includes the data acquisition module being sequentially connected, processing module and data disaply moudle.The dynamic characteristic of the present utility model for being capable of Correct Analysis check-valves, to ensuring that the safety tool of feed liquid pipeline system is of great significance.
Description
Technical field
A kind of test device is the utility model is related to, more particularly to a kind of Dynamic Characteristics of Non-Return Valve test device.
Background technology
Check-valves is valve important in pumping station system.Its function is to prevent the liquid reverse flow in pipeline, although only
It is single to return valve function, it is simple in construction but often huge in water attack harm caused by unexpected termination of pumping, to keep away the production of rabbit water attack
It is raw, once attempted to be not provided with check-valves in pump discharge, and as a result caused pump assembly reversion, static superpressure etc. after termination of pumping.So we will
The Water hammer characteristic of check-valves, i.e. dynamic characteristic are studied, makes every effort to disclose the inherent law of its generation water attack, takes the initiative measure to prevent
Only or reduce water check valve water attack.
The content of the invention
In order to study the dynamic characteristic of check-valves, the utility model provides a kind of convenient, fast, accurately check-valves dynamic
Characteristic test device.
Technical scheme is a kind of Dynamic Characteristics of Non-Return Valve test device used by the utility model solves its technical problem,
Including water pump, control valve, Pneumatic butterfly valve one, Pneumatic butterfly valve two, electromagnetic flowmeter, sensor, vacuum tank, air tank, tested
Check-valves, the water pump, vacuum tank and control valve connect to form circulation loop one by pipeline, the tested check-valves, electricity
Magnetic flowmeter, control valve connect to form circulation loop two with the pneumatic valve of butterfly one by pipeline, and one end of the Pneumatic butterfly valve two leads to
Piping is connected with circulation loop two, and the interface is arranged between Pneumatic butterfly valve one and electromagnetic flowmeter, the Pneumatic butterfly valve
Two other end is connected with air tank, and the sensor is arranged on the both ends of tested check-valves.
Preferably, the control valve is piston control valve.
Preferably, the tested check-valves is DN100 to DN200 check-valves.
Preferably, the Electromagnetic Flow is calculated as duct type electromagnetic flowmeter.
Preferably, the sensor is pressure pulsation sensor.
Preferably, it is provided with service valve between the upper check valve of circulation loop two and control valve.
The Dynamic Characteristics of Non-Return Valve test device also includes data acquisition module, processing module and the data being sequentially connected
Display module, the data acquisition module are used to gather electromagnetic flowmeter and sensing data, send processing module to and enter line number
According to processing, data disaply moudle is used to receive the data-signal from processing module and shown.
Compared with the prior art, the beneficial effects of the present invention are：
By the data on data collecting module collected analyte sensors and electromagnetic flowmeter, processing module progress is sent to
Processing, and result is shown on data disaply moudle, thus we can draw deceleration-adverse current length velocity relation characteristic curve,
Valve opening and discharge coefficient relation curve, this two curves can intuitively reflect the dynamic characteristic of check-valves.This test
Device is easy to use, and data are accurate, to ensuring that the safety tool of feed liquid pipeline system is of great significance.
Brief description of the drawings
Fig. 1 is the utility model structural map.
Fig. 2 is the utility model data acquisition module, processing module and data disaply moudle connection figure.
Embodiment
The utility model is further described with reference to embodiment.Wherein, being given for example only property of accompanying drawing
Illustrate, expression is only schematic diagram, rather than pictorial diagram, it is impossible to is interpreted as the limitation to this patent；In order to which this reality is better described
With new embodiment, some parts of accompanying drawing have omission, zoomed in or out, and do not represent the size of actual product；To ability
For field technique personnel, some known features and its explanation may be omitted and will be understood by accompanying drawing.
Embodiment
As shown in figure 1, a kind of Dynamic Characteristics of Non-Return Valve test device, including water pump 2, piston control valve 3, Pneumatic butterfly valve one
10th, Pneumatic butterfly valve 29, duct type electromagnetic flowmeter 6, pressure pulsation sensor 7, vacuum tank 1, air tank 4, tested check-valves
8, the water pump 2, vacuum tank 1 connect to form circulation loop one with piston control valve 3 by pipeline, are tested check-valves 8, pipeline
Formula electromagnetic flowmeter 6, piston control valve 3 and Pneumatic butterfly valve 1 connect to form circulation loop two by pipeline, Pneumatic butterfly valve 29
One end be connected by pipeline with circulation loop two, interface is arranged between Pneumatic butterfly valve 1 and duct type electromagnetic flowmeter 6,
The other end of Pneumatic butterfly valve 29 is connected with air tank 4, and pressure pulsation sensor 7 is arranged on the both ends of tested check-valves 8.Follow
Service valve 5 is provided between the upper check valve 8 of loop back path two and piston control valve 3.
Dynamic Characteristics of Non-Return Valve test device also includes data acquisition module 11, the processing being sequentially connected in the utility model
Module 12 and data disaply moudle 13, data acquisition module 11 are used to gather duct type electromagnetic flowmeter 6 and pressure fluctuation sensing
Device data 7, send processing module 12 to and carry out data processing, data disaply moudle 13 is used to receive the number from processing module 12
It is believed that number and shown.
Testing procedure is as follows：
First, preparation before testing
A. the instrument and meter precision of all tests should meet standard requirement.
B. leakage check is done to armamentarium, connecting line, pressure tap, flowmeter in pilot system, there must not be leakage.
C. Pneumatic butterfly valve 29 is closed, opens and regulating piston control valve 3 is in some aperture, and record, remaining valve
It is fully open, reach full-gear.
D. duct type electromagnetic flowmeter 6, pressure pulsation sensor 7 are opened.
2nd, water filling
The water filling into vacuum tank 1, the gage pressure value of vacuum tank 1 is observed, when pressure value is constant in running water pressure value
0.3MPa or so, expire to water.
3rd, boiling water pump
Water pump 2 is opened, opens operation 10 minutes, checks whether the operating of the motor of water pump 2 is normal, drains air in pipeline, manages
Water circulation is moved in line, and circulating pressure reaches setting valve 0.35MPa, and duct type electromagnetic flowmeter 6 records initial flow QO, and change
Calculate as initial flow rate V0。
4th, Dynamic Characteristics of Non-Return Valve is tested
A. Pneumatic butterfly valve 1 is closed in setting time, while opens Pneumatic butterfly valve 29.
B. the tested upstream of check-valves 8 is communicated with air tank 4, while cut off the tested upstream forward direction current of check-valves 8,
So that the tested downstream aqueous reflux of check-valves 8, until tested check-valves 8 is closed.
C. duct type electromagnetic flowmeter 6 measures the change of reverse flow flow, flow velocity, and pressure pulsation sensor 7 records non-return
The pressure changing of the upstream and downstream of valve 8 simultaneously obtains boosting △ H.
D. the different opening of regulating piston control valve 3, such as：10%th, 20%, 30%...... to 100%, measures and records above-mentioned
Data.By adjusting the switch time t of Pneumatic butterfly valve 1 and Pneumatic butterfly valve 29, simulate different tested check-valves 8 and close
Influence of the speed to the tested performance of check-valves 8.
5th, check-valves dynamic characteristic curves generate：
A. deceleration dv/dt is calculated：v=V0That is percentage speed variation of the forward stream prompt drop to 0；Dt=t is Pneumatic butterfly valve 1
With the rate of change of the switch time of Pneumatic butterfly valve 29.
B. adverse current speed calculates：Converted, △ H=av/g, wherein a=velocity of wave ft/s, be approximately equal to by following equation
3200 feet per seconds（Steel pipe）；V=refluence speed ft/s；g=32.2ft/s2.
6th, deceleration-adverse current length velocity relation characteristic curve is drawn, draws valve opening and discharge coefficient relation curve.
7th, cut out the pump 2, close power supply of duct type electromagnetic flowmeter 6 etc., carry out cleaning and tidying and the protection of equipment, complete to survey
Examination.
Obviously, above-described embodiment is only intended to clearly illustrate the technical solution of the utility model example, and simultaneously
Non- is the restriction to embodiment of the present utility model.For those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms.There is no need and unable to give thoroughly all embodiments
Lift.All made within spirit of the present utility model and principle all any modification, equivalent and improvement etc., it should be included in this
Within the protection domain of utility model right requirement.
Claims (7)
1. a kind of Dynamic Characteristics of Non-Return Valve test device, it is characterised in that including water pump, control valve, Pneumatic butterfly valve one, pneumatic butterfly
Valve two, electromagnetic flowmeter, sensor, vacuum tank, air tank, tested check-valves, the water pump, vacuum tank and control valve pass through
Pipeline connects to form circulation loop one, and the tested check-valves, electromagnetic flowmeter, control valve and the valve of pneumatic butterfly one pass through pipeline
Connection form circulation loop two, one end of the Pneumatic butterfly valve two is connected by pipeline with circulation loop two, Pneumatic butterfly valve two and
Circulation loop two connect interface be arranged between Pneumatic butterfly valve one and electromagnetic flowmeter, the other end of the Pneumatic butterfly valve two with
Air tank connects, and the sensor is arranged on the both ends of tested check-valves.
2. a kind of Dynamic Characteristics of Non-Return Valve test device according to claim 1, it is characterised in that the control valve is work
Fill in control valve.
A kind of 3. Dynamic Characteristics of Non-Return Valve test device according to claim 1, it is characterised in that the tested non-return
Valve is DN100 to DN200 check-valves.
A kind of 4. Dynamic Characteristics of Non-Return Valve test device according to claim 1, it is characterised in that the electromagnetic flowmeter
For duct type electromagnetic flowmeter.
5. a kind of Dynamic Characteristics of Non-Return Valve test device according to claim 1, it is characterised in that the sensor is pressure
Power fluctuation sensor.
A kind of 6. Dynamic Characteristics of Non-Return Valve test device according to claim 1, it is characterised in that the circulation loop two
Service valve is provided between upper check valve and control valve.
7. the Dynamic Characteristics of Non-Return Valve test device according to any one of claim 1 to 6, it is characterised in that the non-return
Valve actuation step response test device also includes data acquisition module, processing module and the data disaply moudle being sequentially connected, the number
It is used to gather electromagnetic flowmeter and sensing data according to acquisition module, sends processing module to and carry out data processing, data are shown
Module is used to receive the data-signal from processing module and shown.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720297445.XU CN206656850U (en) | 2017-03-24 | 2017-03-24 | A kind of Dynamic Characteristics of Non-Return Valve test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720297445.XU CN206656850U (en) | 2017-03-24 | 2017-03-24 | A kind of Dynamic Characteristics of Non-Return Valve test device |
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| CN206656850U true CN206656850U (en) | 2017-11-21 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918103A (en) * | 2018-04-18 | 2018-11-30 | 合肥通用机械研究院有限公司 | A kind of waterpower control Dynamic Characteristics of Non-Return Valve test macro and test method |
| CN109029943A (en) * | 2018-06-21 | 2018-12-18 | 中广核研究院有限公司 | Two loop non-return valve action test sets |
| CN113203540A (en) * | 2021-04-20 | 2021-08-03 | 株洲珠华智慧水务科技有限公司 | Multi-target experimental device based on transient hydraulic model |
| CN115266080A (en) * | 2022-08-03 | 2022-11-01 | 无锡甘露阀门有限公司 | Valve production is with preventing blockking up capability test equipment |
-
2017
- 2017-03-24 CN CN201720297445.XU patent/CN206656850U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918103A (en) * | 2018-04-18 | 2018-11-30 | 合肥通用机械研究院有限公司 | A kind of waterpower control Dynamic Characteristics of Non-Return Valve test macro and test method |
| CN109029943A (en) * | 2018-06-21 | 2018-12-18 | 中广核研究院有限公司 | Two loop non-return valve action test sets |
| CN113203540A (en) * | 2021-04-20 | 2021-08-03 | 株洲珠华智慧水务科技有限公司 | Multi-target experimental device based on transient hydraulic model |
| CN113203540B (en) * | 2021-04-20 | 2023-03-14 | 株洲珠华智慧水务科技有限公司 | Multi-target experimental device based on transient hydraulic model |
| CN115266080A (en) * | 2022-08-03 | 2022-11-01 | 无锡甘露阀门有限公司 | Valve production is with preventing blockking up capability test equipment |
| CN115266080B (en) * | 2022-08-03 | 2023-06-30 | 无锡甘露阀门有限公司 | Anti-blocking performance test equipment for valve production |
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