CN202083448U - Electronic checkweigher for high pressure CO2 steel cylinder - Google Patents

Electronic checkweigher for high pressure CO2 steel cylinder Download PDF

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Publication number
CN202083448U
CN202083448U CN2011200840881U CN201120084088U CN202083448U CN 202083448 U CN202083448 U CN 202083448U CN 2011200840881 U CN2011200840881 U CN 2011200840881U CN 201120084088 U CN201120084088 U CN 201120084088U CN 202083448 U CN202083448 U CN 202083448U
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CN
China
Prior art keywords
high pressure
steel cylinder
outer bearing
check weighing
weighing device
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Expired - Fee Related
Application number
CN2011200840881U
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Chinese (zh)
Inventor
朱桥宇
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LUOYANG YUFO FIRE-FIGHTING EQUIPMENT CO LTD
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LUOYANG YUFO FIRE-FIGHTING EQUIPMENT CO LTD
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Priority to CN2011200840881U priority Critical patent/CN202083448U/en
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Publication of CN202083448U publication Critical patent/CN202083448U/en
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Abstract

The utility model discloses an electronic checkweigher for a high pressure CO2 steel cylinder, comprising a suspension support, a circuit board, an outer bearing, a shaft sleeve, an inner bearing, a main shaft, a strong magnet ring, a torsion spring and a magnetic resistance chip, wherein the circuit board and the outer bearing are respectively fixed in the suspension support; the shaft sleeve is arranged in the suspension support and concentrically passes through the outer bearing in a clearance fit manner; the inner bearing is arranged in the shaft sleeve in an interference fit manner, an eccentricity is existed between the shaft core of the inner bearing and that of the outer bearing; the main shaft passes through the inner bearing in an interference fit manner, and the two ends of the main shaft protrude from the suspension support; the strong magnet ring is fixedly sleeved on the outer surface of the shaft sleeve protruding from one side of the outer bearing; the torsion spring is sleeved on the outer surface of the shaft sleeve protruding from the other side of the outer bearing, and the two ends of the torsion spring are respectively fixed on the outer surface of the shaft sleeve and the outer ring of the outer bearing; the magnetic resistance chip is arranged on the circuit board, faces to the strong magnet ring, and is used for sensing the angle of magnetic lines acting on the magnetic resistance chip by the strong magnet ring, and outputting two millivolt voltage values according to the angle.

Description

High pressure CO＜sub〉2＜/sub〉the electronics check weighing device of steel cylinder
Technical field
The utility model relates to a kind of check weighing measurement mechanism, particularly relates to a kind of high pressure CO 2The electronics check weighing device of steel cylinder.
Background technology
In the prior art to high pressure CO 2The check weighing of steel cylinder is measured and the weightless following mode of reporting to the police realizes: at CO 2Between the suspender member of steel cylinder bottleneck and last fixed cross beam, increase by an eccentric wheel and add little weight-driven, by eccentric offset (about 1.5mm), with the lever principle of the ratio of position (rotatable adjustment) length (about 200mm) of little weight on little weight arm (screw rod), make the CO that is full of gas of 125KG left and right sides weight 2The little weight of steel cylinder and 1KG reaches balance, and this moment, little weight arm approximately was horizontal, so the user is known CO this moment 2Be full of CO in the steel cylinder 2Gas.Work as CO 2CO in the steel cylinder 2When gas leaks, CO 2The gross weight of steel cylinder reduces with the balance of little weight unbalance, and little weight is fallen, so the user is known CO this moment 2CO in the steel cylinder 2Gas leaks.But according to the 4.9.2 leakage detection apparatus performance demands among the GB GB16669 1:
The device of dress fire extinguishing agent leakage loss amount in 4.9.2.1 the carbon dioxide extinguishing agent hold-up vessel should be provided with and can reliably show, precision must not be lower than 1.5%, and simple and convenient is answered in operation, and indicating value should be sensitive and accurate.
Leak the limiting alarm device 4.9.2.2 the carbon dioxide extinguishing agent hold-up vessel should be provided with, when the carbon dioxide leakage amount reach charging weight 10% the time, should be able to reliably send sound, visual alarm.It is yellow or faint yellow that visual alarm should be, under the general environment light condition, and at a distance should be high-visible apart from 3m.
This shows that above-mentioned prior art is to high pressure CO 2The check weighing measurement mechanism of steel cylinder can't satisfy the requirement of GB GB 16,669 one 1996, and demands urgently further being improved.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of high pressure CO of new structure 2The electronics check weighing device of steel cylinder, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Summary of the invention
The purpose of this utility model is, overcomes existing prior art to high pressure CO 2The check weighing measurement mechanism of steel cylinder can't satisfy the defective that GB GB 16,669 one 1996 requires, and a kind of high pressure CO of new structure is provided 2The electronics check weighing device of steel cylinder, technical matters to be solved are to make it on the basis of the basic size framework of prior art, and the employing eccentric wheel adds the mechanism of the equalising torque of the reverse resistance of torsion spring, by detecting by high pressure CO 2CO in the steel cylinder 2Gas leaks the caused variation that acts on the angle of the magnetic line of force on the magnetic resistance chip, calculates high pressure CO 2CO in the steel cylinder 2The accurate weight of gas is very suitable for practicality.
The purpose of this utility model and to solve its technical matters be to adopt following technical scheme to realize.According to a kind of high pressure CO that the utility model proposes 2The electronics check weighing device of steel cylinder, it comprises: one hangs support, is hung on one on the fixed cross beam; One wiring board is fixedly set in this and hangs in the support; One outer bearing is fixedly set in this and hangs in the support; One axle sleeve is arranged at this and hangs in the support, and is arranged in this outer bearing with one heart with clearance fit, and this outer bearing is stretched out at its two ends respectively; One inner bearing, with interference fit be arranged at this axle sleeve in, and there is an eccentric throw in the axle center of its axle center and this outer bearing; One main shaft is arranged in this inner bearing with interference fit, and its two ends are stretched out this respectively and hung support; One strong magnet ring, fixed cover are located on the outside surface of this axle sleeve of a side that this axle sleeve stretches out this outer bearing; One torsion spring is sheathed on this axle sleeve and stretches out on the outside surface of this axle sleeve of opposite side of this outer bearing, and the two ends of this torsion spring is individually fixed in the outside surface of this axle sleeve and the outer shroud of this outer bearing; And a magnetic resistance chip, be arranged on this wiring board, and towards this strong magnet ring, this this strong magnet ring of magnetic resistance chip sensing acts on the angle of the magnetic line of force of this magnetic resistance chip, and according to two millivolt magnitudes of voltage of this angle output.
The purpose of this utility model and solve its technical matters and can also be further achieved by the following technical measures.
Aforesaid high pressure CO 2The electronics check weighing device of steel cylinder, wherein said wiring board is to be horizontally placed on this to hang the interior top of support, this outer bearing is that correspondence is arranged at this and hangs bottom in the support, and this magnetic resistance chip is to be arranged on the lower surface of this wiring board, and over against the top of this strong magnet ring.
Aforesaid high pressure CO 2The electronics check weighing device of steel cylinder, the two ends of wherein said main shaft are hung with the high pressure CO that needs check weighing 2Steel cylinder.
Aforesaid high pressure CO 2The electronics check weighing device of steel cylinder, the signal output part of wherein said wiring board is connected with a host computer.
Aforesaid high pressure CO 2The electronics check weighing device of steel cylinder, the signal output part of wherein said wiring board is connected with a hummer and/or a warning light.
Aforesaid high pressure CO 2The electronics check weighing device of steel cylinder, wherein said eccentric throw is 1.5mm.
Aforesaid high pressure CO 2The electronics check weighing device of steel cylinder, wherein said magnetic resistance chip are that the precision of the angle that is calculated to be of its two millivolt magnitudes of voltage exporting is 0.2 ° a magnetic resistance chip.
Aforesaid high pressure CO 2The electronics check weighing device of steel cylinder detects this high pressure CO 2CO in the steel cylinder 2The measuring accuracy of gas weight is 0.12%.
The utility model compared with prior art has tangible advantage and beneficial effect.By technique scheme, the utility model high pressure CO 2The electronics check weighing device of steel cylinder has following advantage and beneficial effect at least: the utility model utilized cleverly prior art the basic size architecture design a kind of brand-new electronics check weighing device.Because electronics check weighing device of the present utility model has adopted the non-contact measurement of magnetic resistance chip, can improve the durability of check weighing device, make the failure rate of check weighing device lower, measure more accurate.And can directly obtain high pressure CO by the Single Chip Microcomputer (SCM) program of moving in wiring board electronics check weighing of the present utility model device 2CO in the steel cylinder 2Therefore the gravimetric value of gas can be according to the leakage alarm that requires of GB, and the weight measurement precision that it reached satisfies the requirement of GB fully.Because the utility model has utilized the basic size framework of prior art cleverly,, realize high pressure CO so the utility model can be replaced the check weighing device that the eccentric wheel of prior art adds little weight fully 2The electronics check weighing of steel cylinder, and its cost is low, and market outlook are wide.
In sum, the utility model has obvious improvement technically, and has tangible good effect, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of instructions, and for above-mentioned and other purposes, feature and advantage of the present utility model can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the utility model high pressure CO 2The structural representation of the electronics check weighing device of steel cylinder.
Fig. 2 is the cut-open view along A-A line among Fig. 1.
1: hang support 2: wiring board
3: magnetic resistance chip 4: outer bearing
5: strong magnet ring 6: inner bearing
7: main shaft 8: torsion spring
9: axle sleeve.
Embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to the high pressure CO that the utility model proposes 2Its embodiment of electronics check weighing device, structure, feature and the effect thereof of steel cylinder, describe in detail as after.
Relevant aforementioned and other technology contents, characteristics and effect of the present utility model can clearly present in the following detailed description that cooperates with reference to graphic preferred embodiment.Explanation by embodiment, when can being to reach technological means that predetermined purpose takes and effect to obtain one more deeply and concrete understanding to the utility model, yet appended graphic only provide with reference to the usefulness of explanation, be not to be used for the utility model is limited.
See also Figure 1 and Figure 2, Fig. 1 is the utility model high pressure CO 2The structural representation of the electronics check weighing device of steel cylinder.Fig. 2 is the cut-open view along A A line among Fig. 1.
The utility model high pressure CO 2The electronics check weighing device of steel cylinder is mainly formed by hanging support 1, wiring board 2, magnetic resistance chip 3, outer bearing 4, strong magnet ring 5, inner bearing 6, main shaft 7, torsion spring 8 and axle sleeve 9.Wherein, hang support 1 and be hung on (not shown) on the fixed cross beam.Wiring board 2 is fixedly set in to be hung in the support 1.Magnetic resistance chip 3 is arranged on the wiring board 2, and towards strong magnet ring 5, these magnetic resistance chip 3 sensing strong magnet rings 5 act on the angle of the magnetic line of force of magnetic resistance chip, and according to two millivolt magnitudes of voltage of this angle output.Outer bearing 4 is fixedly set in to be hung in the support 1.Axle sleeve 9 is arranged to be hung in the support 1, and is arranged in outer bearing 4 with one heart with clearance fit, and outer bearing 4 is stretched out at its two ends respectively; Inner bearing 6 is arranged in the axle sleeve 9 with interference fit, and there is an eccentric throw in the axle center of its axle center and outer bearing 4; Main shaft 7 is arranged in inner bearing 6 with interference fit, and its two ends stretch out respectively and hang support 1, to stretch out the high pressure CO that hang at the two ends of hanging support 1 needs check weighing by main shaft 7 2Steel cylinder; Strong magnet ring 5 fixed covers are located on the outside surface of this axle sleeve 9 of a side that axle sleeve 9 stretches out outer bearing 4; Torsion spring 8 is sheathed on axle sleeve 9 and stretches out on the outside surface of this axle sleeve 9 of opposite side of outer bearing 4, and the two ends of torsion spring 8 is individually fixed in the outside surface of axle sleeve 9 and the outer shroud of outer bearing 4.In the utility model, wiring board 2 is to be horizontally placed on the top of hanging in the support 1, and outer bearing 4 is that correspondence is arranged at the bottom of hanging in the support 1, and magnetic resistance chip 3 is to be arranged on the lower surface of wiring board 2, and over against the top of strong magnet ring 5.
The utility model is to adopt eccentric wheel to add the equalising torque mechanism of the reverse resistance of torsion spring.Be hung with the high pressure CO that needs check weighing as the two ends of main shaft 7 2During steel cylinder, main shaft 7 promptly is subjected to high pressure CO 2The gravity of steel cylinder, the direction shown in arrow among Fig. 2.Owing to have eccentric throw between the axle center of inner bearing 6 and the axle center of outer bearing 4, and axle sleeve 9 is concentric settings with outer bearing 4, so axle sleeve 9 will be subjected to high pressure CO 2The effect of the gravity of steel cylinder and the formed initial torque of eccentric throw, main shaft 7 is that the axle center of relative outer bearing 4 is directed downwards rotation along clockwise among Fig. 1, thereby axle sleeve 9 also is rotated in a clockwise direction, because strong magnet ring 5 fixed covers are located on the axle sleeve 9, therefore strong magnet ring 5 also can be rotated in a clockwise direction in company with axle sleeve 9 at this moment again.Two ends by torsion spring 8 are individually fixed on the outer shroud of axle sleeve 9 and outer bearing 4, and torsion spring 8 can produce the moment of resistance, this moment of resistance and high pressure CO with the rotation of axle sleeve 9 2The corresponding balance of the gravitational torque of steel cylinder.
Electronics check weighing device of the present utility model makes high pressure CO by selecting the torsion spring 8 of suitable parameters 2When steel cylinder is expired gas, high pressure CO 2The moment of resistance balance of the gravitational torque of steel cylinder and torsion spring 8, this moment, the moment of resistance of torsion spring 8 was in maximal value, outer bearing 4 becomes a special angle value with the line in inner bearing 6 axle center approximately with horizontal angle, and the magnetic line of force of strong magnet ring 5 a at an angle acts on magnetic resistance chip 3.Utilize the high-sensitive reaction and millivolt principle of voltage output of the magnetic line of force of 3 pairs of rotations of magnetic resistance chip, load the 5V DC voltage for magnetic resistance chip 3, when the high pressure CO of expiring gas 2When steel cylinder takes place to leak, high pressure CO 2The overall weight of steel cylinder alleviates, the moment of resistance that causes torsion spring 8 to produce diminishes, main shaft 7 rotates up along direction counterclockwise among Fig. 1 with respect to the axle center of outer bearing 4, outer bearing 4 and the line and the horizontal angle in inner bearing 6 axle center are changed, and driving strong magnet ring 5 simultaneously along the rotation of counterclockwise direction, the angle that makes the magnetic line of force of strong magnet ring 5 act on magnetic resistance chip 3 turns to angle b by angle a.In this process, doube bridge in the magnetic resistance chip 3 can correspondingly be exported two angles along with the magnetic line of force that acts on magnetic resistance chip 3 and change and the millivolt magnitude of voltage of variation, Single Chip Microcomputer (SCM) program by operation in the wiring board 2, the special-purpose formula that utilizes magnetic resistance chip 3 producers to provide can calculate this two pairing angle values of millivolt magnitude of voltage, thereby angle value calculates high pressure CO thus 2CO in the steel cylinder 2The accurate weight of gas.
Electronics check weighing device of the present utility model can be connected the signal output part of wiring board 2 with a host computer, to demonstrate high pressure CO at host computer 2CO in the steel cylinder 2The weight of gas and leakage situation.The utility model can also be connected the signal output part of wiring board 2 with a hummer and/or a warning light, work as high pressure CO 2When steel cylinder generation gas leaked, the leakage rate of carbon dioxide reached 10% o'clock of charging weight in bottle, to report to the police by hummer and/or warning light.
Because the magnetic line of force of strong magnet ring 5 acts on the angle of magnetic resistance chip 3 and turns to angle b from angle a, is by high pressure CO 2Steel cylinder weight is driven to light variation by the heaviest.As with high pressure CO 2Be full of gas CO in the steel cylinder 2During gas, high pressure CO 2The general assembly (TW) of steel cylinder is 125KG, CO in the bottle 2The weight of gas is that 45KG is an example, and when the eccentric throw in inner bearing 6 and outer bearing 4 axle center was about 1.5mm, the initial torque that axle sleeve 9 is subjected to was 125KG * 1.5mm.By selecting the torsion spring 8 of suitable parameters, make this moment outer bearing 4 become-80 ° approximately with horizontal angle with the line in inner bearing 6 axle center, the angle a that strong magnet ring 5 acts on magnetic resistance chip 3 is-80 °, at this moment the moment of resistance and the high pressure CO of torsion spring 2The corresponding balance of the gravitational torque of steel cylinder.Work as high pressure CO 2The steel cylinder general assembly (TW) is by 125KG (full bottle) when dropping to 80KG (empty bottle), the corresponding this moment outer bearing 4 of making becomes 80 ° with the line in inner bearing 6 axle center approximately with horizontal angle, the angle b that strong magnet ring 5 acts on the magnetic line of force of magnetic resistance chip 3 is 80 °, at this moment the moment of resistance and the high pressure CO of torsion spring 2The corresponding balance of the gravitational torque of steel cylinder.In this process, direction and horizontal angle that strong magnet ring 5 acts on the magnetic line of force of magnetic resistance chip 3 forward 80 ° along direction counterclockwise among Fig. 1 to by-80 °, because the precision of the angle that the millivolt magnitude of voltage of magnetic resistance chip 3 outputs is calculated to be is 0.2 °, then by 160 °/0.2 °=800,45KG/800 ≈ 0.056KG, 0.056KG/45 the calculating of ≈ 0.12% can obtain the utility model to high pressure CO 2The measuring accuracy of gas weight is about 0.12% in the steel cylinder, and as seen this precision is much smaller than the accuracy requirement of GB.
The utility model utilized cleverly prior art the basic size architecture design a kind of brand-new electronics check weighing device.Because it has adopted non-contact measurement, can improve the durability of device, make failure rate lower, measure more accurate.And high pressure CO can be directly exported in the operation by the Single Chip Microcomputer (SCM) program in the wiring board 2 2CO in the steel cylinder 2The gravimetric value of gas, and can be according to the leakage alarm that requires of GB, and the precision that it reached satisfies the requirement of GB fully.Because the utility model has utilized the basic size framework of prior art cleverly,, realize high pressure CO so the utility model can be replaced the check weighing device that the eccentric wheel of prior art adds little weight fully 2The electronics check weighing of steel cylinder, and its cost is low, and market outlook are wide.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art are not in breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.

Claims (8)

1. high pressure CO 2The electronics check weighing device of steel cylinder is characterized in that it comprises:
One hangs support, is hung on one on the fixed cross beam;
One wiring board is fixedly set in this and hangs in the support;
One outer bearing is fixedly set in this and hangs in the support;
One axle sleeve is arranged at this and hangs in the support, and is arranged in this outer bearing with one heart with clearance fit, and this outer bearing is stretched out at its two ends respectively;
One inner bearing, with interference fit be arranged at this axle sleeve in, and there is an eccentric throw in the axle center of its axle center and this outer bearing;
One main shaft is arranged in this inner bearing with interference fit, and its two ends are stretched out this respectively and hung support;
One strong magnet ring, fixed cover are located on the outside surface of this axle sleeve of a side that this axle sleeve stretches out this outer bearing;
One torsion spring is sheathed on this axle sleeve and stretches out on the outside surface of this axle sleeve of opposite side of this outer bearing, and the two ends of this torsion spring is individually fixed in the outside surface of this axle sleeve and the outer shroud of this outer bearing; And
One magnetic resistance chip is arranged on this wiring board, and towards this strong magnet ring, this this strong magnet ring of magnetic resistance chip sensing acts on the angle of the magnetic line of force of this magnetic resistance chip, and according to two millivolt magnitudes of voltage of this angle output.
2. high pressure CO according to claim 1 2The electronics check weighing device of steel cylinder, it is characterized in that wherein said wiring board is to be horizontally placed on this to hang the interior top of support, this outer bearing is that correspondence is arranged at this and hangs bottom in the support, and this magnetic resistance chip is to be arranged on the lower surface of this wiring board, and over against the top of this strong magnet ring.
3. high pressure CO according to claim 1 2The electronics check weighing device of steel cylinder is characterized in that the two ends of wherein said main shaft are hung with the high pressure CO that needs check weighing 2Steel cylinder.
4. high pressure CO according to claim 1 2The electronics check weighing device of steel cylinder is characterized in that the signal output part of wherein said wiring board is connected with a host computer.
5. high pressure CO according to claim 1 2The electronics check weighing device of steel cylinder is characterized in that the signal output part of wherein said wiring board is connected with a hummer and/or a warning light.
6. high pressure CO according to claim 1 2The electronics check weighing device of steel cylinder is characterized in that wherein said eccentric throw is 1.5mm.
7. according to the described high pressure CO of arbitrary claim in the claim 1 to 6 2The electronics check weighing device of steel cylinder is characterized in that wherein said magnetic resistance chip is that the precision of the angle that is calculated to be of its two millivolt magnitudes of voltage exporting is 0.2 ° a magnetic resistance chip.
8. high pressure CO according to claim 7 2The electronics check weighing device of steel cylinder is characterized in that this electronics check weighing device detects this high pressure CO 2CO in the steel cylinder 2The measuring accuracy of gas weight is 0.12%.
CN2011200840881U 2011-03-23 2011-03-23 Electronic checkweigher for high pressure CO2 steel cylinder Expired - Fee Related CN202083448U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011200840881U CN202083448U (en) 2011-03-23 2011-03-23 Electronic checkweigher for high pressure CO2 steel cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011200840881U CN202083448U (en) 2011-03-23 2011-03-23 Electronic checkweigher for high pressure CO2 steel cylinder

Publications (1)

Publication Number Publication Date
CN202083448U true CN202083448U (en) 2011-12-21

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Application Number Title Priority Date Filing Date
CN2011200840881U Expired - Fee Related CN202083448U (en) 2011-03-23 2011-03-23 Electronic checkweigher for high pressure CO2 steel cylinder

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112334743A (en) * 2018-11-30 2021-02-05 开利公司 Suppression tank scale and level determination

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112334743A (en) * 2018-11-30 2021-02-05 开利公司 Suppression tank scale and level determination

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20111221

Termination date: 20120323