CN208766898U - A kind of fluid pressure tester - Google Patents
A kind of fluid pressure tester Download PDFInfo
- Publication number
- CN208766898U CN208766898U CN201721919750.4U CN201721919750U CN208766898U CN 208766898 U CN208766898 U CN 208766898U CN 201721919750 U CN201721919750 U CN 201721919750U CN 208766898 U CN208766898 U CN 208766898U
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- China
- Prior art keywords
- casing
- air pump
- pressure
- pressure transducer
- pipeline
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Abstract
The utility model provides a kind of fluid pressure tester, it is related to teaching tool for physical experiments technical field, including air pump, pipeline and pressure transducer, the air pump is aspiration pump or blower pump, the pipeline includes the casing of at least two sequentially connected different tube diameters, the every casing is equipped with pressure transducer, and the air pump is connected to one end of that maximum root casing of caliber；The utility model can be from be evacuated and the blow pressure of positive and negative bi-directional verification fluid and the relationship of flow velocity；In the identical situation of other parameters, internal diameter of the pipeline is bigger, and resistance is smaller, therefore air pump is connected on the maximum casing of caliber, advantageously reduces influence of the resistance to relationship between this experimental study fluid flow rate and pressure, that is, reduces unnecessary experiment interference；By the use of pressure transducer, counts accurate, easy to operate, data and present intuitively.
Description
Technical field
The utility model relates to a kind of fluid pressure testers, belong to teaching tool for physical experiments technical field.
Background technique
In physics teaching, it is related to the pressure and flow velocity relation related content of fluid, and discusses cited in both sides relation
Experiment illustration, majority for by certain phenomenons carry out indirect demonstration, such as blow air between two pieces of paper, it is mutual between two paper
It close, table tennis floating and blows coin and skips obstacle etc..In all experiments, lack the reality for directly displaying data
It tests, student understands more difficulty of getting up.It, can be to the pressure of gas using pressure transducer as digital experiment instrument is quoted
DATA REASONING is carried out, so that this experiment carries out quantization and has certain basis.But the effect that preferably play sensor, also needs
Want matched experimental model.
In view of this, the applicant specializes in this, a kind of fluid pressure tester is developed, thus this case produces
It is raw.
Utility model content
In order to solve drawbacks described above existing in the prior art, the purpose of the utility model is to provide one kind can be from pumping
The fluid pressure tester of relationship between the fluid velocity and pressure for positive and negative bi-directional verification of blowing, to achieve the goals above,
The technical solution that the utility model is taken is as follows:
A kind of fluid pressure tester, including air pump, pipeline and pressure transducer, the air pump are aspiration pump or air blowing
Pump, the pipeline includes the casing of at least two sequentially connected different tube diameters, and the every casing is equipped with pressure sensing
Device, the air pump are connected to one end of that maximum root casing of caliber.
Preferably, being additionally provided with sensor interface on casing described in every, the pressure transducer is connect by sensor
Mouth is connected with casing.
Preferably, the pressure transducer is connected with signal picker.
Working principle: opening air pump, and tester is started to work, and the casing of every different tube diameters is equipped with pressure transducer,
The pressure for flowing through sheath gas can be measured, to verify the relationship between pressure and flow velocity.
The utility model is able to achieve following technical effect:
It (1) can be from be evacuated and the blow pressure of positive and negative bi-directional verification fluid and the relationship of flow velocity；
(2) in the identical situation of other parameters, internal diameter of the pipeline is bigger, and resistance is smaller, therefore air pump is connected to caliber most
On big casing, influence of the resistance to relationship between this experimental study fluid flow rate and pressure is advantageously reduced, that is, reducing need not
The experiment interference wanted；
(3) by the use of pressure transducer, counting is accurate, easy to operate, and data present intuitive.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the present embodiment fluid pressure tester.
Mark explanation: air pump 1, pipeline 2, first sleeve 21, the second casing 22, third casing 23, sensor interface 3, letter
Number collector 4.
Specific embodiment
In order to make the attainable technical effect of technological means and its institute of the utility model, more perfect take off can be become apparent from
Dew, hereby provides one embodiment, and be described in detail as follows in conjunction with attached drawing:
As shown in FIG. 1, FIG. 1 is the schematic perspective view of the present embodiment fluid pressure tester, one kind of the present embodiment
Fluid pressure tester, including air pump 1, pipeline 2 and pressure transducer, air pump 1 are aspiration pump or blower pump, are adopted in the present embodiment
With the air pump for the pumping air blowing one that can be not only evacuated but also can blow, i.e. air pump is equipped with suction interface and blows afloat interface, tests
When can adjust as needed air pump pumping or blow.
Pipeline 2 includes the casing of at least two sequentially connected different tube diameters, and every casing is equipped with pressure transducer (figure
In do not indicate), sensor interface 4 is additionally provided on every casing, pressure transducer is connected by sensor interface 4 with casing, i.e.,
Pressure transducer is arranged in every casing interface, can measure the pressure for flowing through sheath gas.It is maximum that air pump 1 is connected to caliber
One end of that root casing.Reason and advantage are as follows:
Above formula shows: in the identical situation of other parameters, internal diameter of the pipeline is bigger, and resistance is smaller, therefore air pump 1 is connected to
On the maximum casing of caliber, influence of the resistance to relationship between this experimental study fluid flow rate and pressure is advantageously reduced.
In the present embodiment, the first sleeve 21 being sequentially increased using three root canal diameters, the second casing 22 and third casing 23,
Three casings 23 are connected with air pump 1, and each casing socket place sealed air-tight, pressure transducer is connected with signal picker 5.
Experimental principle: fluid pressure tester is also known as " Bernoulli's theorem tester ", matches with teaching material, can in teaching
It is used for teacher's lecture experiment and student experiment in group.The tester can be matched with pressure transducer to study air flow pressure
With the relationship of flow velocity, pressure is small when flow velocity is big, and flow velocity hour pressure is big.
Experimental implementation: three matching used pressure transducers are respectively connected to three sensor interfaces 4, air pump is blown
Port is connected with third casing 23, opens air pump, and first group of three pressure acquired under air blowing state change over time curve；It will
Air pump bleeding point is connected with third casing 23, opens air pump, and acquisition lower second group of three pressure of pumping state change over time song
Every group of experimental data is analyzed and is compared by line, thus show that pressure is small when flow velocity is big, the big conclusion of flow velocity hour pressure.
Pressure transducer will be compressed with sensor interface 4 when experiment, otherwise will affect experiment effect
The above content is combination preferred embodiments of the present invention to further detailed made by provided technical solution
Describe in detail bright, and it cannot be said that the utility model specific implementation is confined to these above-mentioned explanations, technology affiliated for the utility model
For the those of ordinary skill in field, without departing from the concept of the premise utility, several simple deductions can also be made
Or replacement, it all shall be regarded as belonging to the protection scope of the utility model.
Claims (3)
1. a kind of fluid pressure tester, including air pump, pipeline and pressure transducer, it is characterised in that: the air pump is pumping
Pump or blower pump, the pipeline include the casing of at least two sequentially connected different tube diameters, and the every casing is equipped with
Pressure transducer, the air pump are connected to one end of that maximum root casing of caliber.
2. a kind of fluid pressure tester as described in claim 1, it is characterised in that: be additionally provided with biography on casing described in every
Sensor interface, the pressure transducer are connected by sensor interface with casing.
3. a kind of fluid pressure tester as described in claim 1, it is characterised in that: the pressure transducer and signal acquisition
Device is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721919750.4U CN208766898U (en) | 2017-12-29 | 2017-12-29 | A kind of fluid pressure tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721919750.4U CN208766898U (en) | 2017-12-29 | 2017-12-29 | A kind of fluid pressure tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208766898U true CN208766898U (en) | 2019-04-19 |
Family
ID=66124864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721919750.4U Expired - Fee Related CN208766898U (en) | 2017-12-29 | 2017-12-29 | A kind of fluid pressure tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208766898U (en) |
-
2017
- 2017-12-29 CN CN201721919750.4U patent/CN208766898U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190419 Termination date: 20211229 |