CN201955117U - Passive non-contact low frequency impulse counter on Roots gas meter - Google Patents
Passive non-contact low frequency impulse counter on Roots gas meter Download PDFInfo
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- CN201955117U CN201955117U CN2011200296341U CN201120029634U CN201955117U CN 201955117 U CN201955117 U CN 201955117U CN 2011200296341 U CN2011200296341 U CN 2011200296341U CN 201120029634 U CN201120029634 U CN 201120029634U CN 201955117 U CN201955117 U CN 201955117U
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Abstract
The utility model discloses a passive non-contact low frequency impulse counter on a Roots gas meter. The impulse counter comprises a transmission device, wherein the transmission device comprises a transmission device casing; a stator and a rotor are arranged in the transmission device casing; a No. 1 magnet ring and a No. 2 magnet ring are arranged on the rotor at an interval; zero power-consumption magnetic-sensing sensors are arranged at the No.1 magnet ring; a magnetic coupling device is arranged at the No.2 magnet ring; and the magnetic coupling device is connected with a drive shaft. For the reason that no power source is needed for the operation of the passive non-contact low frequency impulse counter, electric energy is saved; by adopting a non-mechanical-contact structure, the low frequency impulse counter has long service life, high reliability, and can not generate electric spark, thereby having simple structure and high safety, and being economical and practical; and as the two zero power-consumption magnetic-sensing sensors are adopted, not only the counting precision can be improved, but also the flow direction of the airflow can be determined.
Description
Technical field
The utility model relates to a kind of counter, the passive contactless low-frequency pulse counter on especially a kind of Roots's gas meter.
Background technology
At present, known Roots's gas meter is a kind of gauging table that is widely used in various combustion gas such as rock gas, town gas, Roots's gas meter mainly is made up of table body assembly and annex two large divisions, two parts are to be connected by magnetic coupling device, and table body assembly mainly is made of flow detection chamber housing, a pair of 8 font rotors, timing allocation gear etc.Annex mainly is made of flow-compensated instrument, low-frequency pulse counter etc.
Low-frequency pulse counter on most of Roots's table mainly contains two kinds.A kind ofly mainly be made of tongue tube, magnetic coupling device, gearing, permanent magnet etc., this counter drives permanent magnet by magnetic coupling device and rotates, and triggers tongue tube work.This counter has the contact, very likely produces spark during work, and this is a danger close for gas meter, flow meter.Another kind mainly is made of Hall element, gearing, magnetic coupling device etc., and this counter drives magnet ring by magnetic coupling device and rotates, and triggers Hall element work.This counter is an active type, about static current of lcd 10mA.The battery of one joint 2400mAh can only provide counter works about 240 hours, can consume a lot of electric energy like this, and neither environmental protection is also uneconomical, and used this counter also to increase insecurity in gas meter.
Summary of the invention
Goal of the invention: the purpose of this utility model is to overcome the shortcoming of prior art, provides a kind of and need not to use power supply, do not have mechanical contact, reliability height, low-frequency pulse counter that counting precision is high.
In order to solve the problems of the technologies described above, the utility model has adopted following technical scheme:
Passive contactless low-frequency pulse counter on a kind of Roots's gas meter, it comprises gearing, described gearing comprises drive housing, is provided with stator and rotor in the inside of drive housing; On rotor, be interval with a magnet ring and No. two magnet rings; Be provided with zero power consumptive magneto-dependent sensor at a magnet ring place; Be provided with magnetic coupling device at No. two magnet ring places, magnetic coupling device is connected with driving shaft.
Wherein, described magnetic coupling device comprises the magnetic coupling device shell, is provided with the magnetic coupling magnet ring in the magnetic coupling device shell, and the magnetic coupling device shell is connected with driving shaft.
Wherein, the described magnet ring magnet ring that is axial charging; No. two magnet rings are the magnet ring of radial magnetizing; Magnet ring and No. two magnet rings are separately positioned on the both ends of rotor.
Wherein, described zero power consumptive magneto-dependent sensor is two, and is symmetricly set on the symmetrical both sides of a magnet ring; Zero power consumptive magneto-dependent sensor is fixed on the inwall of drive housing, and inwall is provided with the adaptive groove of zero power consumptive magneto-dependent sensor, and zero power consumptive magneto-dependent sensor is fixed in the groove.
Low-frequency pulse counting appliance of the present utility model has following advantage: do not need to use power supply during (1) work, can save electric energy; (2) adopt no mechanical contact structure, long service life, the reliability height can not produce electric spark, is a kind of safe low-frequency pulse counter; (3) counter can be sent to testing result beyond 1000 meters by telephone wire, thereby realizes remote detection; (4) the rotating speed speed of testing result and gearing upper magnetic ring is irrelevant, both can detect the magnet ring that rotating speed is exceedingly fast, and also can detect the extremely slow magnet ring of rotating speed; (5) simple in structure, economical and practical; (6) signal amplitude of counter output can both reach more than the 1.5V, directly acquisition process; (7) counter has adopted two zero power consumptive magneto-dependent sensors, can improve counting precision, can also determine air flow direction.
Description of drawings
Be illustrated as structural representation of the present utility model.
Embodiment:
Below in conjunction with accompanying drawing the utility model is done further explanation.
As shown in the figure, the passive contactless low-frequency pulse counter on Roots's gas meter of the present utility model is made up of gearing, magnet ring group, zero power consumptive magneto-dependent sensor and magnetic coupling device.
Gearing comprises the drive housing 1 of a straight-tube shape, is provided with a stator 2 on the inwall at drive housing 1 two ends, is provided with suitable with it rotor 3 in stator 2, and stretch out from stator 2 at the two ends of rotor 3.
The magnet ring group comprises a magnet ring 4 that is arranged on rotor 3 upper ends and No. two magnet rings 5 that are arranged on rotor 3 lower ends.
Zero power consumptive magneto-dependent sensor 6 is two, and they are symmetricly set on the both sides of a magnet ring 4.Described zero power consumptive magneto-dependent sensor is made up of responsive silk, enameled wire loop, lead-in wire, skeleton, cylindrical aluminum shell and embedding part, wherein responsive silk is placed in the middle of the skeleton, two lead-in wires are arranged in the skeleton both sides, enameled wire loop is around skeleton, the enameled wire loop two ends connect together by pad and two lead-in wires, are sealed in the aluminium shell by the embedding part at last.The shell of two zero power consumptive magneto-dependent sensors 6 all is fixed on the inwall of drive housing 1, and inwall is provided with the adaptive groove of zero power consumptive magneto-dependent sensor 6, and zero power consumptive magneto-dependent sensor 6 is fixed in the groove.Zero power consumptive magneto-dependent sensor 6 is a kind of sensors with electromagnetic conversion function, it can produce electric signal in the magnetic field that changes, do not need during work to use power supply and magnetic signal can be converted to electric signal, the signal output part of zero power consumptive magneto-dependent sensor 6 is connected with the signal processing apparatus of Roots's gas meter.
Magnetic coupling device comprises the magnetic coupling device shell 7 of a upper end open, and the openend of magnetic coupling device shell 7 is set in magnet ring 5 outsides No. two, the magnetic coupling magnet ring 8 that on the inwall of openend, is provided with, and magnetic coupling magnet ring 8 is the magnet ring of axial charging; The lower end of magnetic coupling device shell 7 is connected with driving shaft 9, and driving shaft 9 lower ends are stretched in the interior gas piping of Roots's gas meter.N shown in the figure, S have represented the magnetic pole of magnet ring respectively.
When gas flows into Roots's gas meter, can promote driving shaft 9 rotates, also can rotate with driving shaft 9 magnetic coupling device shell 7 that connects and the magnetic coupling magnet ring 8 that is installed on the magnetic coupling device shell 7, by magnetic coupling magnet ring 8 and No. two magnet ring 5 effects, the rotor 3 that is installed on the stator 2 begins to rotate, the rotation of rotor 3 has driven a magnet ring 4 and has rotated, and then triggers two zero power consumptive magneto-dependent sensors, 6 work that are installed on the gear housing 4.
The characteristics of zero power consumptive magneto-dependent sensor 6 work are: under action of alternating magnetic field, the direction of magnetization generation instant reverse of magnetic bi-stable alloy wire in the sensor, cause that instantaneous variation also takes place surrounding magnetic field thereupon, thereby in coil, generate electromotive force, export a series of pulse electrical signals.Whether responsive silk direction of magnetization overturns, only to be parallel to the threshold value of magnetic induction density component of responsive silk relevant with external magnetic field, promptly need only a magnet ring 4 near near the magneto-dependent sensor, and the magnetic field intensity that it produced reaches the threshold value of responsive silk magnetization reversal along the component of responsive silk direction, and zero power consumptive magneto-dependent sensor 6 will be exported an electric signal.The output of this electric signal and changes of magnetic field speed are irrelevant, and is promptly irrelevant with the velocity of approach of a magnet ring 4, therefore can detect the magnetic field of extremely low pace of change, is suitable for low-frequency pulse counting under the very slow situation of magnet ring 4 rotating speed.Gas flow rotates the number of turns with driver rotor 3 and is directly proportional, and a moving week of rotor 3 revolutions, two zero power consumptive magneto-dependent sensors 6 produce a pair of positive negative pulse stuffing signal respectively.Therefore the pulse signal of zero power consumptive magneto-dependent sensor 6 outputs is counted, can be detected gas flow.Two zero power consumptive magneto-dependent sensors 6 are installed are for counting precision is doubled, and the sequencing of the positive negative pulse stuffing signal that each zero power consumptive magneto-dependent sensor 6 is sent analyzes, can also further judge airflow direction.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. the passive contactless low-frequency pulse counter on Roots's gas meter, it is characterized in that: it comprises gearing, described gearing comprises drive housing (1), is provided with stator (2) and rotor (3) in the inside of drive housing (1); On rotor (3), be interval with a magnet ring (4) and No. two magnet rings (5); Locate to be provided with zero power consumptive magneto-dependent sensor (6) at a magnet ring (4); Locate to be provided with magnetic coupling device at No. two magnet rings (5), magnetic coupling device is connected with driving shaft (9).
2. the passive contactless low-frequency pulse counter on a kind of Roots's gas meter according to claim 1, it is characterized in that: described magnetic coupling device comprises magnetic coupling device shell (7), be provided with magnetic coupling magnet ring (8) in magnetic coupling device shell (7), magnetic coupling device shell (7) is connected with driving shaft (9).
3. the passive contactless low-frequency pulse counter on a kind of Roots's gas meter according to claim 2 is characterized in that: a described magnet ring (4) is the magnet ring of axial charging; No. two magnet rings (5) are the magnet ring of radial magnetizing.
4. the passive contactless low-frequency pulse counter on a kind of Roots's gas meter according to claim 3 is characterized in that: a described magnet ring (4) and No. two magnet rings (5) are separately positioned on the both ends of rotor (3).
5. according to the passive contactless low-frequency pulse counter on claim 1,2, the 3 or 4 described a kind of Roots's gas meters, it is characterized in that: described zero power consumptive magneto-dependent sensor (6) is two, and is symmetricly set on the symmetrical both sides of a magnet ring (4).
6. the passive contactless low-frequency pulse counter on a kind of Roots's gas meter according to claim 5, it is characterized in that: described zero power consumptive magneto-dependent sensor (6) is fixed on the inwall of drive housing (1), inwall is provided with the adaptive groove of zero power consumptive magneto-dependent sensor (6), and zero power consumptive magneto-dependent sensor (6) is fixed in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200296341U CN201955117U (en) | 2011-01-28 | 2011-01-28 | Passive non-contact low frequency impulse counter on Roots gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200296341U CN201955117U (en) | 2011-01-28 | 2011-01-28 | Passive non-contact low frequency impulse counter on Roots gas meter |
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| Publication Number | Publication Date |
|---|---|
| CN201955117U true CN201955117U (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200296341U Expired - Fee Related CN201955117U (en) | 2011-01-28 | 2011-01-28 | Passive non-contact low frequency impulse counter on Roots gas meter |
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| CN (1) | CN201955117U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109559486A (en) * | 2018-11-13 | 2019-04-02 | 禹州市天源生物科技有限公司 | A kind of Roots's measuring instrument warning device of wireless transmission |
-
2011
- 2011-01-28 CN CN2011200296341U patent/CN201955117U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109559486A (en) * | 2018-11-13 | 2019-04-02 | 禹州市天源生物科技有限公司 | A kind of Roots's measuring instrument warning device of wireless transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20110831 Termination date: 20170128 |