CN205722191U - A kind of prompting domestic gas meter without tolerance that can give warning in advance - Google Patents

Abstract

A kind of prompting domestic gas meter without tolerance that can give warning in advance, including housing and arrange the control device of enclosure interior, gas flow sensor and electric control valve, housing is assembled with the sealed snap fit of lower house by upper shell, upper shell sets air inlet, venthole and buzzer, gas flow sensor sleeve is located at venthole and is positioned at enclosure interior port, electric control valve is arranged at air inlet and is positioned at the port of enclosure interior, and lower house medium position sets slot, and lower house inwall is set up defences protective pad sheet；Control device: single-chip microcomputer, flow counting circuit, IC-card read/write circuit, D/C power circuit, valve controling circuit, liquid crystal display circuit and warning circuit；Single-chip microcomputer is connected with flow counting circuit, IC-card read/write circuit, valve controling circuit, liquid crystal display circuit and warning circuit signal respectively；Introduce flow transducer and electric control valve component, based on controlling device flow measurement, it is achieved surplus is reminded, and based on Single-chip Controlling method, improves sensing accuracy.

Description

A kind of prompting domestic gas meter without tolerance that can give warning in advance

Technical field

This utility model relates to a kind of gas meter, flow meter, a kind of prompting domestic gas without tolerance that can give warning in advance Table, belongs to gas measuring instrument production technical field.

Background technology

Gas meter, flow meter is the gas dosing equipment that a kind of people commonly use, and the structure that existing gas meter, flow meter has is complex, its peace Dress uses the most highly inconvenient.

Universal domestic gas meter currently on the market, user buys card initially to supply department before using and purchases gas, then by IC Card inserts in the default metering module of gas meter, flow meter, and user just can employ.In use, need the most often to check IC-card Interior institute Residual volume, in order to avoid the technical problem that during causing being currently in use, tolerance deficiency is died the most suddenly, to daily life band It is inconvenient to come.

This utility model is intended to based on metering gas table, and research design one surplus alarm device, when tolerance deficiency (reaches Set lowest residuals value) time can send alarm signal prompting user in time IC-card is supplemented with money, solve above-mentioned application is deposited Problem, it is the most convenient to bring to daily life.

Utility model content

This utility model aims to provide a kind of prompting domestic gas meter without tolerance that can give warning in advance, and innovation introduces surplus Alarm device, thoroughly solves the technological deficiency that the gas meter, flow meter surplus in the presence of prior art cannot be reported to the police so that it used In journey the most convenient.

For realizing described purpose, this utility model following technical scheme of offer:

A kind of prompting that can give warning in advance is without the domestic gas meter of tolerance, including housing and be arranged at described enclosure interior Control device, gas flow sensor and electric control valve, described housing is assembled by snap fit with lower house by upper shell Forming, described upper shell is provided with air inlet, venthole and buzzer, and described gas flow sensor sleeve is located at described venthole position In the port of described enclosure interior, described electric control valve is arranged at described air inlet and is positioned at the port of described enclosure interior, The medium position of described lower house offers slot, upper casing and lower casing and is tightly connected, and described lower house inwall is additionally provided with protection Pad；

Control device in described housing includes: single-chip microcomputer, flow counting circuit, IC-card read/write circuit, D/C power electricity Road, valve controling circuit, liquid crystal display circuit and warning circuit；Described single-chip microcomputer is read with flow counting circuit, IC-card respectively Write circuit, valve controling circuit, liquid crystal display circuit and warning circuit connect；Described valve controling circuit is believed with described valve Number connecting, described D/C power circuit is electrically connected with described single-chip microcomputer and electric control valve respectively；Described warning circuit and described honeybee Ring device signal connects.

Described air inlet is provided with defecator, and described defecator includes framework and drainage screen, in described drainage screen also Being provided with dry medium, described dry medium is inert alumina；Combustion gas is dried, can effectively extend gas meter, flow meter (particularly Internal control device and gas flow sensor) service life.

Described protection pad is that elastomeric material is made；The protection pad of quality of rubber materials, and then effectively play protection gas meter, flow meter Internal core control the parts vibrations that are subject to and damage during assembling.

Described upper shell is provided with seal washer with the access section of lower house；Effectively realize the airtight of enclosure interior environment, keep away Exempt from the inflammable risk that combustion gas exists enclosure interior slight leakage of generation.

Compared with prior art, the beneficial effects of the utility model are:

1, this case is based on existing conventional gas machinery table, introduces gas flow sensor and electric control valve component, can On the basis of flow measurement circuit based on control device, it is achieved that the function that surplus is reminded, IC-card is used to realize prepaid, Being able to ensure that the consumption pattern of " with gas after post-pay paystation ", this product sets from the Thoughts on Optimized Design of electromechanical integration, structure Put simple, install easy to operate, and based on Single-chip Controlling method, improve detection, sensing accuracy.

2, being provided with protection pad in lower house, protection pad is distributed along lower house inwall and fixes connection, can be in combustion gas During table transport, assembling, the collision reducing gas meter, flow meter makes gas meter, flow meter impaired with jolting.It is made for elastomeric material, permissible Improve the protected effect of gas meter, flow meter.

3, it is additionally provided with dry medium in air inlet is provided with defecator, and defecator, can effectively filter in combustion gas Granule foreign, combustion gas is dried, extend the service life of gas meter, flow meter.

Accompanying drawing explanation

Fig. 1 is the structural representation of shell of the present utility model；

Fig. 2 is the fundamental diagram of control device described in the utility model；

Fig. 3 is workflow diagram of the present utility model.

Description of symbols:

1-upper shell；2-lower house；3-air inlet；4-venthole；5-slot；6-buzzer；7-protects pad；8-seals Packing ring；9-electric control valve；10-gas flow sensor；11-defecator.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise The every other embodiment obtained, broadly falls into the scope of this utility model protection.

Refer to Fig. 1-3, in this utility model embodiment, a kind of prompting domestic gas without tolerance that can give warning in advance Table, including housing and be arranged at the control device of enclosure interior, gas flow sensor 10 and electric control valve 9, housing is by upper Housing 1 and lower house 2 are assembled by sealing snap fit, and described upper shell 1 is provided with air inlet 3, venthole 4 and buzzer 6, gas flow sensor 10 is sheathed on venthole 4 and is positioned at the port of enclosure interior, and electric control valve 9 is arranged at described air inlet 3 ports being positioned at described enclosure interior, the medium position of described lower house 4 offers slot 5, and described lower house 2 inwall is also It is provided with protection pad 7；

Control device in described housing includes: single-chip microcomputer, flow counting circuit, IC-card read/write circuit, D/C power electricity Road, valve controling circuit, liquid crystal display circuit and warning circuit；Described single-chip microcomputer is read with flow counting circuit, IC-card respectively Write circuit, valve controling circuit, liquid crystal display circuit and warning circuit connect；Described valve controling circuit and described electrically-controlled valve Door 9 signal connects, and described D/C power circuit is electrically connected with described single-chip microcomputer and electric control valve 9 respectively；Described warning circuit with Described buzzer 6 signal connects.

Described air inlet 3 is provided with defecator 11, and described defecator 11 includes framework and drainage screen, described drainage screen Inside being additionally provided with dry medium, described dry medium is inert alumina；Combustion gas is dried, can effectively extend gas meter, flow meter (special Internal control device and gas flow sensor) service life.

Described protection pad 7 is made for elastomeric material；The protection pad of quality of rubber materials, and then effectively play protection gas meter, flow meter Internal core control the parts vibrations that are subject to and damage during assembling.

Described upper shell 1 is provided with seal washer 8 with the access section of lower house 2；Effectively realize the airtight of enclosure interior environment, The inflammable risk avoiding combustion gas to occur slightly to reveal in enclosure interior and to exist.

When user will insert in table containing the IC-card purchasing tolerance (representing with encrypted value form), control valve is in automatically controlled system System opens the electric control valve of air inlet nose end under controlling, to open combustion gas route.User is often by a measurement unit, and metering circuit is just Sending the cycle metrical pulse sequence such as a group, this pulse train, as being judged to effectively through electric-control system, i.e. can oneself be purchased in tolerance Deduct a measurement unit, and by residue tolerance in Liquid Crystal Module display table.When remaining tolerance and being zero, control valve is closed automatically Closing, gas circuit is the most cut-off, and now user must again hold and purchase gas.Control valve is in ON state under normal circumstances, only works as spy When different event occurs, control valve just becomes closing closed state from ON state.The information read back from IC-card, is stored in RAM memory therewith In, RAM memory chip can store significant data in system under non-powered state reliably and with long-term, and working life is up to 100,000 Secondary.When subscriber card insertion system, card in password, card number, purchasing the critical data such as tolerance and user's use gas record will be with ciphertext shape Formula is stored in RAM storage chip.

Liquid crystal display circuit can show under-voltage, purchase gas, close valve, card by mistake and five kinds of information states of tolerance and combination in any thereof. Warning circuit is connected by the buzzer signal of peripheral hardware, reports to the police, Single-chip Controlling is signaled to warning circuit, reports to the police Circuit produces signal and sends warning to buzzer.

Claims (4)

1. the prompting that can give warning in advance is without the domestic gas meter of tolerance, including housing and be arranged at described enclosure interior Controlling device, gas flow sensor and electric control valve, described housing is filled by sealing snap fit with lower house by upper shell Joining and form, described upper shell is provided with air inlet, venthole and buzzer, and described gas flow sensor sleeve is located at described venthole Being positioned at the port of described enclosure interior, described electric control valve is arranged at described air inlet and is positioned at the port of described enclosure interior Place, the medium position of described lower house offers slot, and described lower house inwall is additionally provided with protection pad；

Control device in described housing includes: single-chip microcomputer, flow counting circuit, IC-card read/write circuit, D/C power circuit, valve Gate control circuit, liquid crystal display circuit and warning circuit；Described single-chip microcomputer reads and writes electricity with flow counting circuit, IC-card respectively Road, valve controling circuit, liquid crystal display circuit and warning circuit signal connect；Described valve controling circuit is believed with described valve Number connecting, described D/C power circuit is electrically connected with described single-chip microcomputer and electric control valve respectively；Described warning circuit and described honeybee Ring device signal connects.

A kind of prompting domestic gas meter without tolerance that can give warning in advance the most according to claim 1, it is characterised in that institute Stating air inlet and be provided with defecator, described defecator includes framework and drainage screen, is additionally provided with and is dried Jie in described drainage screen Matter, described dry medium is inert alumina.

A kind of prompting domestic gas meter without tolerance that can give warning in advance the most according to claim 1, it is characterised in that anti- Protective pad sheet is that elastomeric material is made.

A kind of prompting domestic gas meter without tolerance that can give warning in advance the most according to claim 1, it is characterised in that institute The access section stating upper shell and lower house is provided with seal washer.