CN215491884U - Signal anti-interference turbine flowmeter - Google Patents
Signal anti-interference turbine flowmeter Download PDFInfo
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- CN215491884U CN215491884U CN202120557976.4U CN202120557976U CN215491884U CN 215491884 U CN215491884 U CN 215491884U CN 202120557976 U CN202120557976 U CN 202120557976U CN 215491884 U CN215491884 U CN 215491884U
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Abstract
The utility model discloses a signal anti-interference turbine flowmeter, which comprises a cylindrical barrel; the lower end of the outer side surface of the cylindrical barrel body is provided with a lower sealing cover, the inner side surface of the lower sealing cover is provided with a first arc-shaped conformal sleeve, the inner side surface of the first arc-shaped conformal sleeve is provided with a metal shielding cover, the inner side surface of the metal shielding cover is provided with a permanent magnetic sleeve, the inner side surface of the permanent magnetic sleeve is provided with a PVC inner sleeve, the PVC inner sleeve is rotatably connected with a turbine through a bearing support arranged on the inner side surface of the PVC inner sleeve, the upper end of the outer side surface of the metal shielding cover is sleeved with a second arc-shaped conformal sleeve, the signal anti-interference turbine flowmeter, can prevent the interference of external electromagnetic field by using electrostatic shielding and electromagnetic induction shielding to ensure the accuracy of the measurement of the instrument and high-quality communication, simultaneously can dismantle the washing fast, can link to each other cylindricality barrel and measurement pipeline fast through the sealed ring flange, open the bolt of installing on the mounting panel, can take off the turbine together with PVC inner skleeve together fast.
Description
Technical Field
The utility model relates to the technical field of speed type flowmeters, in particular to a signal anti-interference turbine flowmeter.
Background
The turbine flowmeter is the main type of speed type flowmeter, and the working principle is as follows: a turbine is arranged in the center of the pipeline, and two ends of the turbine are supported by bearings. When fluid passes through the pipeline, the fluid impacts turbine blades to generate driving torque on the turbine, so that the turbine overcomes friction torque and fluid resistance torque to generate rotation. Within a certain flow range, the rotational angular velocity of the turbine is directly proportional to the fluid flow rate for a certain fluid medium viscosity. Thus, the fluid flow rate can be obtained from the rotational angular velocity of the turbine, and the fluid flow through the conduit can be calculated. The speed of the turbine is sensed by a sensing coil mounted outside the housing. When the turbine blades cut the magnetic lines of force generated by the permanent magnet steel in the housing, a change in the magnetic flux in the sensing coil is caused. The sensing coil sends the detected magnetic flux periodic variation signal to a preamplifier, amplifies and shapes the signal, generates a pulse signal in direct proportion to the flow velocity, and sends the pulse signal to a unit conversion and flow integrating circuit to obtain and display an accumulated flow value; meanwhile, the pulse signal is sent to a frequency current conversion circuit to convert the pulse signal into an analog current amount, so as to indicate an instantaneous current value.
The existing turbine flowmeter has the following defects when in use: 1. the anti-electromagnetic interference capability is weak, and the stable operation cannot be realized in a complex electromagnetic environment; 2. in order to make the turbine flowmeter work stably for a long time; the turbine flowmeter needs to be disassembled and cleaned regularly, generally once a month, and the existing turbine flowmeter is troublesome to disassemble and clean.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art, and provides a signal anti-interference turbine flowmeter which can prevent the interference of an external electromagnetic field by using an electrostatic shield and an electromagnetic induction shield so as to ensure the accuracy of the measurement of the instrument and high-quality communication, can be quickly disassembled and cleaned, and can effectively solve the problems in the background art.
In order to achieve the purpose, the utility model provides the following technical scheme: a signal anti-interference turbine flowmeter comprises a cylindrical barrel; the lateral surface lower extreme of cylindricality barrel is equipped with down the sealed cowling, and the medial surface of lower sealed cowling is equipped with first arc shape conformal cover, and the medial surface of first arc shape conformal cover is equipped with metal shielding cover, and metal shielding cover's medial surface is equipped with permanent magnetism sleeve, and permanent magnetism telescopic medial surface is equipped with the PVC inner skleeve, and the PVC inner skleeve is connected with the turbine through setting up the bearing bracket rotation of its medial surface, second arc shape conformal cover has been cup jointed to metal shielding cover's lateral surface upper end, and the lateral surface upper end of second arc shape conformal cover is equipped with the sealed cowling, and the upper surface middle part of going up the sealed cowling is equipped with seal shell, and seal shell's upper surface is equipped with can dismantle the apron, and seal shell's internally mounted has hall sensor.
Furthermore, sealing flanges are arranged on the left end face and the right end face of the cylindrical barrel, and positioning rib plates are arranged between the outer side faces of the sealing flanges and the outer side faces of the cylindrical barrel.
Furthermore, the lower end of the outer side face of the metal shielding cover is provided with a rectangular boss, and the rectangular boss is clamped with a rectangular groove arranged at the lower end of the inner side face of the first arc-shaped conformal sleeve.
Furthermore, the second arc-shaped conformal sleeve and the first arc-shaped conformal sleeve are spliced together to form a hollow cylindrical barrel.
Furthermore, mounting plates are arranged on the front side and the rear side of the lower end of the outer side face of the upper sealing cover and on the front side and the rear side of the upper end of the outer side face of the lower sealing cover, and adjacent mounting plates are connected together through bolts.
Compared with the prior art, the utility model has the beneficial effects that: this anti-interference turbine flowmeter of signal can utilize electrostatic shield and electromagnetic induction shielding to prevent the interference of external electromagnetic field to ensure its instrument measurement's accuracy nature and high-quality communication, can dismantle the washing fast simultaneously, can link to each other cylindricality barrel and measuring tube fast through the sealing flange dish, open the bolt of installing on the mounting panel, can be fast with the turbine together take off with the PVC inner skleeve together.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
fig. 3 is a schematic cross-sectional view taken at a-a in fig. 2.
In the figure: the device comprises a sealing flange plate 1, an upper sealing cover 2, a detachable cover plate 3, a sealing shell 4, a positioning rib plate 5, a mounting plate 6, a lower sealing cover 7, a cylindrical barrel 8, a first arc-shaped conformal sleeve 9, a second arc-shaped conformal sleeve 10, a Hall sensor 11, a metal shielding cover 12, a permanent magnet sleeve 13, a PVC inner sleeve 14 and a turbine 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, if an orientation description is referred to, for example, the directions or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in fig. 2, only for convenience of description and simplification of description, but not for indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. When a feature is referred to as being "disposed," "secured," or "connected" to another feature, it can be directly disposed, secured, or connected to the other feature or be indirectly disposed, secured, or connected to the other feature.
Referring to fig. 1-3, the present invention provides a technical solution: a signal anti-interference turbine flowmeter comprises a cylindrical barrel 8; sealing flange discs 1 are respectively arranged on the left end face and the right end face of a cylindrical barrel 8, a positioning rib plate 5 is arranged between the outer side face of the sealing flange disc 1 and the outer side face of the cylindrical barrel 8, the cylindrical barrel 8 can be quickly connected with a measuring pipeline through the sealing flange discs 1, a lower sealing cover 7 is arranged at the lower end of the outer side face of the cylindrical barrel 8, a first arc-shaped conformal sleeve 9 is arranged on the inner side face of the lower sealing cover 7, a metal shielding cover 12 is arranged on the inner side face of the first arc-shaped conformal sleeve 9, a rectangular boss is arranged at the lower end of the outer side face of the metal shielding cover 12 and is clamped with a rectangular groove arranged at the lower end of the inner side face of the first arc-shaped conformal sleeve 9, a permanent magnetic sleeve 13 is arranged on the inner side face of the metal shielding cover 12, a PVC inner sleeve 14 is arranged on the inner side face of the permanent magnetic sleeve 13, the PVC inner sleeve 14 is rotatably connected with a turbine 15 through a bearing support arranged on the inner side face of the PVC sleeve, a second arc-shaped conformal sleeve 10 is sleeved on the outer side face of the metal shielding cover 12, the second arc-shaped conformal sleeve 10 and the first arc-shaped conformal sleeve 9 are spliced together to form a hollow cylindrical barrel, the upper end of the outer side surface of the second arc-shaped conformal sleeve 10 is provided with an upper sealing cover 2, the middle part of the upper surface of the upper sealing cover 2 is provided with a sealing shell 4, the upper surface of the sealing shell 4 is provided with a detachable cover plate 3, the sealing shell 4 is internally provided with a Hall sensor 11, the front side and the rear side of the lower end of the outer side surface of the upper sealing cover 2 and the front side and the rear side of the upper end of the outer side surface of a lower sealing cover 7 are respectively provided with a mounting plate 6, the adjacent mounting plates 6 are connected together through bolts, the bolts arranged on the mounting plates 6 are opened, the turbine 15 and a PVC inner sleeve 14 can be quickly taken down together, the contact parts of the second arc-shaped conformal sleeve 10, the Hall sensor 11, the metal shielding cover 12 and the permanent magnetic sleeve 13 and the cylindrical barrel 8 are respectively provided with a sealing ring, and the signal anti-interference turbine flowmeter, the electrostatic shielding and the electromagnetic induction shielding can be utilized to prevent the interference of an external electromagnetic field, so that the accuracy of the measurement of the instrument and high-quality communication can be ensured, and meanwhile, the quick disassembly and cleaning can be realized.
When in use: the inner layer of the metal shielding cover 12 is made of lead materials and is used for shielding external electromagnetic fields, when the turbine 15 and the PVC inner sleeve 14 need to be cleaned, bolts installed on the installation plate 6 only need to be detached, then the upper sealing cover 2 is lifted, and the inner side face of the PVC inner sleeve 14 and the turbine 15 can be cleaned by a high-pressure air gun.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A signal interference resistant turbine flowmeter, characterized by: comprises a cylindrical barrel (8); a lower sealing cover (7) is arranged at the lower end of the outer side surface of the cylindrical barrel (8), a first arc-shaped conformal sleeve (9) is arranged on the inner side surface of the lower sealing cover (7), a metal shielding cover (12) is arranged on the inner side surface of the first arc-shaped conformal sleeve (9), a permanent magnetic sleeve (13) is arranged on the inner side surface of the metal shielding cover (12), a PVC inner sleeve (14) is arranged on the inner side surface of the permanent magnetic sleeve (13), the PVC inner sleeve (14) is rotatably connected with a turbine (15) through a bearing support arranged on the inner side surface of the PVC inner sleeve, the outer side upper end of metal shield cover (12) has cup jointed second arc conformal cover (10), and the lateral surface upper end of second arc conformal cover (10) is equipped with sealed cowling (2), and the upper surface middle part of going up sealed cowling (2) is equipped with seal shell (4), and the upper surface of seal shell (4) is equipped with can dismantle apron (3), and the internally mounted of seal shell (4) has hall sensor (11).
2. A signal tamper resistant turbine flowmeter according to claim 1, wherein: the left end face and the right end face of the cylindrical barrel (8) are respectively provided with a sealing flange (1), and a positioning rib plate (5) is arranged between the outer side face of the sealing flange (1) and the outer side face of the cylindrical barrel (8).
3. A signal tamper resistant turbine flowmeter according to claim 1, wherein: the lower end of the outer side face of the metal shielding cover (12) is provided with a rectangular boss, and the rectangular boss is clamped with a rectangular groove arranged at the lower end of the inner side face of the first arc-shaped conformal sleeve (9).
4. A signal tamper resistant turbine flowmeter according to claim 1, wherein: the second arc-shaped conformal sleeve (10) and the first arc-shaped conformal sleeve (9) are spliced together to form a hollow cylindrical barrel.
5. A signal tamper resistant turbine flowmeter according to claim 1, wherein: the mounting plates (6) are arranged on the front side and the rear side of the lower end of the outer side face of the upper sealing cover (2) and on the front side and the rear side of the upper end of the outer side face of the lower sealing cover (7), and the adjacent mounting plates (6) are connected together through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120557976.4U CN215491884U (en) | 2021-03-18 | 2021-03-18 | Signal anti-interference turbine flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120557976.4U CN215491884U (en) | 2021-03-18 | 2021-03-18 | Signal anti-interference turbine flowmeter |
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| Publication Number | Publication Date |
|---|---|
| CN215491884U true CN215491884U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120557976.4U Active CN215491884U (en) | 2021-03-18 | 2021-03-18 | Signal anti-interference turbine flowmeter |
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| CN (1) | CN215491884U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117490782A (en) * | 2023-12-29 | 2024-02-02 | 福建哈德仪表有限公司 | Turbine flowmeter capable of preventing magnetic interference |
-
2021
- 2021-03-18 CN CN202120557976.4U patent/CN215491884U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117490782A (en) * | 2023-12-29 | 2024-02-02 | 福建哈德仪表有限公司 | Turbine flowmeter capable of preventing magnetic interference |
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