CN204422567U - A kind of pipe flow speed pick-up unit - Google Patents
A kind of pipe flow speed pick-up unit Download PDFInfo
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- CN204422567U CN204422567U CN201520166001.3U CN201520166001U CN204422567U CN 204422567 U CN204422567 U CN 204422567U CN 201520166001 U CN201520166001 U CN 201520166001U CN 204422567 U CN204422567 U CN 204422567U
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- flow speed
- rotating shaft
- pipe flow
- speed pick
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Abstract
The utility model relates to a kind of pipe flow speed pick-up unit, described pipe flow speed pick-up unit comprises the housing that inside has cavity, through described housing and one end is positioned at described cavity, the other end is positioned at the rotating shaft outside described housing, be arranged on the runner on one end being positioned at outside described housing of described rotating shaft, be arranged on the multiple blades on described runner, be connected with one end being positioned at described cavity of described rotating shaft and driven the generator generated electricity by described rotating shaft, be arranged on the terminal box on described generator, be positioned at described cavity and be provided with the electric cabinet of frequency measurement circuit, for being electrically connected the extension line of described terminal box and described frequency measurement circuit.The utility model structure is simple, effectively the flow velocity of material in pipeline can be changed into the frequency change of electric current, and then by frequency measurement circuit survey frequency, calculates flow velocity further, and measurement result is comparatively accurate, and error is little.
Description
Technical field
the utility model belongs to pick-up unit technical field, is specifically related to a kind of pipe flow speed pick-up unit.
Background technology
pipeline uses material transportation means widely in the fields such as industry, the energy, military equipment, urban architecture, the ventilating system etc. of the transport of city tap-water, sewage, rock gas and industrial material, plumbing and buildings, all uses the pipeline that large amount of complex is hidden.Ensure that security and the validity of these piping systems are most important.But along with the increase of tenure of use, the situation that city water pipeline inevitably leaks.If processed not in time, once have an accident not only can bring huge economic loss, it is also a kind of significant wastage to resource simultaneously.Therefore, regularly pipeline reconnoitred and safeguard, just seeming very necessary, namely pipeline is effectively detected.But the inner-walls of duct as water pipe leaks and has larger disguise, cannot be found by common observation, usually need many-sided parameters such as the flow to pipeline, flow velocity to measure, and then whether comprehensive descision pipeline leak.
Utility model content
technical problem to be solved in the utility model be to provide a kind of can the pipe flow speed pick-up unit of accurate testing pipes fault.
for solving the problems of the technologies described above, a kind of technical scheme that the utility model adopts is:
a kind of pipe flow speed pick-up unit, described pipe flow speed pick-up unit comprises the housing that inside has cavity, through described housing and one end is positioned at described cavity, the other end is positioned at the rotating shaft outside described housing, be arranged on the runner on one end being positioned at outside described housing of described rotating shaft, be arranged on the multiple blades on described runner, be connected with one end being positioned at described cavity of described rotating shaft and driven the generator generated electricity by described rotating shaft, be arranged on the terminal box on described generator, be positioned at described cavity and be provided with the electric cabinet of frequency measurement circuit, for being electrically connected the extension line of described terminal box and described frequency measurement circuit.
particularly, described generator is arranged in described cavity.
particularly, described pipe flow speed pick-up unit also comprises the bottom that is arranged on described cavity and the counterweight platform fitted with the inside surface of described housing, and described electric cabinet is arranged in described counterweight platform.
particularly, described pipe flow speed pick-up unit also comprises the O-ring seal be arranged on for preventing liquid from entering described inner chamber between described rotating shaft and described housing, and the inside surface of described O-ring seal and outside surface fit with described rotating shaft and described housing respectively.
particularly, described pipe flow speed pick-up unit also comprises the supporting seat for supporting described rotating shaft, and described supporting seat is positioned at described cavity and is connected with the inside surface of described housing.
more specifically, described supporting seat offers through hole, described pipe flow speed pick-up unit also comprises the bearing be arranged in described through hole, and described rotating shaft is passed described bearing and matched with described bearing.
particularly, described blade has 4 ~ 12.
particularly, described frequency measurement circuit comprises the shaping amplification circuit be electrically connected with described extension line, the main door be electrically connected with described shaping amplification circuit, crystal oscillator, the frequency divider be electrically connected with described crystal oscillator, the gate that is electrically connected with described frequency divider, and described gate and described main door are electrically connected.
scope of the present utility model, is not limited to the technical scheme of the particular combination of above-mentioned technical characteristic, also should contain other technical scheme of being carried out combination in any by above-mentioned technical characteristic or its equivalent feature and being formed simultaneously.The technical characteristic that such as, disclosed in above-mentioned feature and the application (but being not limited to) has similar functions is replaced mutually and the technical scheme etc. formed.
because technique scheme is used, the utility model compared with prior art has following advantages:
the utility model structure is simple, effectively the flow velocity of material in pipeline can be changed into the frequency change of electric current, and then by frequency measurement circuit survey frequency, calculates flow velocity further, and measurement result is comparatively accurate, and error is little.
Accompanying drawing explanation
accompanying drawing 1 is sectional view of the present utility model;
accompanying drawing 2 is frequency measurement circuit figure of the present utility model;
wherein: 1, housing; 2, rotating shaft; 3, runner; 4, generator; 5, extension line; 6, electric cabinet; 7, counterweight platform; 8, O-ring seal; 11, cavity; 12, supporting seat; 13, bearing; 31, blade; 41, terminal box.
Embodiment
below in conjunction with accompanying drawing, further detailed complete to illustrate is done to the utility model.
example is detected as with water pipe:
as illustrated in fig. 1 and 2, a kind of pipe flow speed pick-up unit, comprise housing 1, rotating shaft 2, runner 3, blade 31, generator 4, terminal box 41, be provided with frequency measurement circuit electric cabinet 6, for being electrically connected extension line 5, counterweight platform 7, O-ring seal 8, the supporting seat 12 of terminal box 41 and frequency measurement circuit.
the inside of housing 1 has cavity 11, generator 4, terminal box 41, electric cabinet 6, extension line 5, counterweight platform 7, supporting seat 12 are all positioned at cavity 11, rotating shaft 2 is through housing 1 and one end is positioned at cavity 11, the other end is positioned at outside housing 1, and runner 3, blade 31 are positioned at outside housing 1.
runner 3 is arranged on the end being positioned at outside housing 1 of rotating shaft 2, and blade 31 is arranged on runner 3.Blade 31 has 4 ~ 12, and preferably, blade 31 is 4 or 6 or 8 or 10 or 12.
in testing process, because rotating shaft 2 is stretched out outside housing 1, and flow rate of water flow in pipeline is very fast, hydraulic pressure is higher, rotating shaft 2 is easily seeped water with the connecting portion of housing 1, therefore, pipe flow speed pick-up unit also comprises the O-ring seal 8 being arranged on and entering inner chamber 11 between rotating shaft 2 and housing 1 for anti-sealing, and the inside surface of O-ring seal 8 and outside surface fit with rotating shaft 2 and housing 1 respectively.The setting of O-ring seal 8, can hinder the infiltration of current effectively, is protected the generator 4 in cavity 11 and frequency measurement circuit not easily soak or make moist.
generator 4 is arranged in cavity 11.Generator 4 is connected with the end being positioned at cavity 11 of rotating shaft 2 and drives generating by rotating shaft 2, and terminal box 41 is arranged on generator 4.
the radial support point of rotating shaft 2 lays respectively at the junction with the junction of housing 1 and generator 4, but spacing is comparatively large between the two, and rotating shaft 2 is easily beated when rotating, and causes rotary speed unstabilization fixed, and then the accuracy that impact is measured.Therefore arrange the supporting seat 12 being used for supporting revolving shaft 2, supporting seat 12 is positioned at cavity 11 and is connected with the inside surface of housing 1.Supporting seat 12 offers through hole, and bearing 13 is arranged in through hole, and rotating shaft 2 is passed bearing 13 and matches with bearing 13.The setting of supporting seat 12 and bearing 13, provides the 3rd strong point to rotating shaft 2, the stability of rotating shaft 2 when rotating is improved greatly, rotating speed is reacted truly in testing circuit.
counterweight platform 7 is arranged on the bottom of cavity 11 and fits with the inside surface of housing 1, and electric cabinet 6 is arranged in counterweight platform 7.Counterweight platform 7 to be arranged so that housing 1 runs in the duct more stable, not easily there is rollover or canting, make testing process more stable, reduce and artificially adjust number of times, improve work efficiency.
frequency measurement circuit comprises the shaping amplification circuit be electrically connected with extension line 5, the main door be electrically connected with shaping amplification circuit, crystal oscillator, the frequency divider be electrically connected with crystal oscillator, the gate that is electrically connected with frequency divider, and gate and main door are electrically connected.
send fixed frequency signal by crystal oscillator, frequency divider selects suitable frequency signal to control gate, and gate controls main door, and input signal is strengthened through shaping amplification circuit processing signals value, becomes and is easy to measure.
in this programme, runner 3 and blade 31 are in outside housing 1, are arranged in the current of pipeline, and so by the effect of current, blade 31 is driven to rotate together with runner 3, has driven the rotation of rotating shaft 2 further.Again because rotating shaft 2 is connected with generator 4 and drive it to generate electricity, so along with the rotation of rotating shaft 2, generator 4 will send alternating current, therefore when the flow velocity of current changes, the frequency of the alternating current that generator 4 sends also is change, measured the frequency of electric current by frequency measurement circuit, and then instead can release the rotating speed of rotating shaft 2, then can be calculated the flow velocity of current further by the geomery of runner 3 and blade 31.
the pick-up unit of the present embodiment in use, first checks whether runner 3 and blade 31 can normal rotation, the then situations of the O-ring seal 8 of inspection rotating shaft 2 and housing 1 junction.Confirm normally, moving blade 31, sees whether the count display in frequency measurement circuit works, if do not worked, then the connection of check circuit all parts, as normal work, then the pick-up unit of the present embodiment can be put into pipeline, detect, and collect detection signal.
as mentioned above, we are illustrated according to aim of the present utility model completely, but the utility model is not limited to above-described embodiment and implementation method.Different changes and enforcement is carried out in the scope that the practitioner of correlative technology field can permit at technological thought of the present utility model.
Claims (8)
1. a pipe flow speed pick-up unit, it is characterized in that: described pipe flow speed pick-up unit comprises the housing (1) that inside has cavity (11), through described housing (1) and one end is positioned at described cavity (11), the other end is positioned at described housing (1) rotating shaft outward (2), be arranged on the runner (3) be positioned on described housing (1) one end outward of described rotating shaft (2), be arranged on the multiple blades (31) on described runner (3), be connected with one end being positioned at described cavity (11) of described rotating shaft (2) and driven the generator (4) generated electricity by described rotating shaft (2), be arranged on the terminal box (41) on described generator (4), be positioned at described cavity (11) and be provided with the electric cabinet (6) of frequency measurement circuit, for being electrically connected described terminal box (41) and the extension line (5) of described frequency measurement circuit.
2. pipe flow speed pick-up unit according to claim 1, is characterized in that: described generator (4) is arranged in described cavity (11).
3. pipe flow speed pick-up unit according to claim 1, it is characterized in that: described pipe flow speed pick-up unit also comprises the bottom that is arranged on described cavity (11) and the counterweight platform (7) fitted with the inside surface of described housing (1), and described electric cabinet (6) is arranged in described counterweight platform (7).
4. pipe flow speed pick-up unit according to claim 1, it is characterized in that: described pipe flow speed pick-up unit also comprises the O-ring seal (8) be arranged on for preventing liquid from entering described inner chamber (11) between described rotating shaft (2) and described housing (1), the inside surface of described O-ring seal (8) and outside surface fit with described rotating shaft (2) and described housing (1) respectively.
5. pipe flow speed pick-up unit according to claim 1, it is characterized in that: described pipe flow speed pick-up unit also comprises the supporting seat (12) for supporting described rotating shaft (2), described supporting seat (12) is positioned at described cavity (11) and is connected with the inside surface of described housing (1).
6. pipe flow speed pick-up unit according to claim 5, it is characterized in that: described supporting seat (12) offers through hole, described pipe flow speed pick-up unit also comprises the bearing (13) be arranged in described through hole, and described rotating shaft (2) is through described bearing (13) and match with described bearing (13).
7. pipe flow speed pick-up unit according to claim 1, is characterized in that: described blade (31) has 4 ~ 12.
8. pipe flow speed pick-up unit according to any one of claim 1 to 7, it is characterized in that: described frequency measurement circuit comprises the shaping amplification circuit be electrically connected with described extension line (5), the main door be electrically connected with described shaping amplification circuit, crystal oscillator, the frequency divider be electrically connected with described crystal oscillator, the gate that is electrically connected with described frequency divider, and described gate and described main door are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520166001.3U CN204422567U (en) | 2015-03-24 | 2015-03-24 | A kind of pipe flow speed pick-up unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520166001.3U CN204422567U (en) | 2015-03-24 | 2015-03-24 | A kind of pipe flow speed pick-up unit |
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| Publication Number | Publication Date |
|---|---|
| CN204422567U true CN204422567U (en) | 2015-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520166001.3U Active CN204422567U (en) | 2015-03-24 | 2015-03-24 | A kind of pipe flow speed pick-up unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548603A (en) * | 2016-01-25 | 2016-05-04 | 王晶怡 | Speed measurement system based on signal amplification circuit |
| CN105675060A (en) * | 2016-03-04 | 2016-06-15 | 黄立新 | Flow measurement apparatus of pipe airflow |
-
2015
- 2015-03-24 CN CN201520166001.3U patent/CN204422567U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548603A (en) * | 2016-01-25 | 2016-05-04 | 王晶怡 | Speed measurement system based on signal amplification circuit |
| CN105675060A (en) * | 2016-03-04 | 2016-06-15 | 黄立新 | Flow measurement apparatus of pipe airflow |
| CN105675060B (en) * | 2016-03-04 | 2018-01-19 | 黄立新 | A kind of chimneying flow measurement device |
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| GR01 | Patent grant |