CN201540132U

CN201540132U - Gas meter provided with control valve with switch in-place detection function

Info

Publication number: CN201540132U
Application number: CN2009202079987U
Authority: CN
Inventors: 李忠明; 谷利斌
Original assignee: SHANGHAI FATO ENTERPRISE GROUP CO Ltd
Current assignee: ZENNER Metering Technology (Shanghai) Ltd.
Priority date: 2009-08-18
Filing date: 2009-08-18
Publication date: 2010-08-04
Anticipated expiration: 2019-08-18

Abstract

The utility model discloses a gas meter provided with a control valve with the switch in-place detection function. The gas meter comprises a gas meter main body and the control valve; the gas meter main body comprises an intelligent control module and a liquid crystal display window; a mechanism for driving a gear rack (3) to move is mounted on a rotating shaft of the control valve; a wavy ridge is arranged on the back of the gear rack; an electrode base is mounted in the corresponding position near the ridge of the gear rack; two electrode contact pieces bending to one side are arranged on the electrode base in the corresponding position of the ridge of the gear rack, wherein, the lower electrode contact piece is a fixed electrode contact piece, and the upper is an elastic electrode contact piece; a contact bending inwards is arranged at the top end of the elastic electrode contact piece; and the elastic electrode contact piece protrudes upwards in the position near the contact. The utility model has the advantages of simple structure, safety and reliability, and ensures that the on-off state displayed in the liquid crystal display window is the same to that of a switch of the valve.

Description

Operation valve has put in place the gas meter, flow meter of measuring ability of switch

Technical field

The utility model relates to a kind of gas meter, flow meter, is specifically related to a kind of operation valve and has put in place the gas meter, flow meter of measuring ability of switch.

Background technology

The gas meter, flow meter of prior art comprises valve, intelligent control module, liquid crystal window etc., liquid crystal window has burnt gas valve to open or close the demonstration printed words, the unlatching or the closed condition that show exist and the inconsistent situation of valve virtual condition sometimes, and this can use to combustion gas and bring potential safety hazard.Cause demonstration and actual inconsistent reason to mainly contain following two kinds of situations: a kind of is that valve goes to carry out this instruction after control module is sent the instruction of open and close valve, and control module is transferred to information that opens or closes of LCD simultaneously, and is shown by LCD.But whether valve was really carried out (as the disconnection of the electric power connection line of valve) and whether was carried out that to put in place (be that valve has been carried out this instruction this moment, but owing to jam or other reason do not carry out put in place), control module can't be known, so can produce the display message of LCD and the inconsistent possibility of virtual condition of valve.Second kind is that the minority valve has been installed a reed switch in the extreme position of opening the valve state, open and close valve state to valve detects, promptly control module is judged to be out valve when reed is closed, control module is judged to be the pass valve when reed disconnects, according to this judgement relevant information being exported to LCD then shows, the defect point of this design is to disconnect late gate and not necessarily really close and put in place when detecting reed, because the open and close of valve have certain impulse stroke, might mechanism's execution partway because jam etc. are stopped at this; In addition,, remain closed, and the actual closed condition that is in of valve also can cause its LCD to show and the different defective of valve virtual condition as it if reed switch lost efficacy always.

Summary of the invention

The purpose of this utility model is to overcome the defective of above-mentioned prior art, provides a kind of operation valve to have put in place the gas meter, flow meter of measuring ability of switch, and it has simple in structure, and is safe and reliable, and it is in full accord to guarantee that the lcd window switch shows with the valve switch state.

The purpose of this utility model is achieved in that a kind of operation valve has put in place the gas meter, flow meter of measuring ability of switch, and it comprises gas meter, flow meter main body and operation valve, and the gas meter, flow meter main body comprises intelligent control module, liquid crystal window; It is characterized in that: on operation valve, comprise a burnt gas switch rotating shaft, install one in the burnt gas switch rotating shaft and drive the mechanism that tooth bar moves, there is the undaform back at the back of tooth bar, close on tooth bar back correspondence position electrode base is installed, fix two electrode contact plates at electrode base upper rack back correspondence position to a lateral bending song, following is the fixed electorde contact chip, top is the elastic electrode contact chip, elastic electrode contact chip top is aduncate contact, the elastic electrode contact chip raises up closing on contact position, elastic electrode feeds back to intelligent control module by lead with switch actuating signals, and intelligent control module shows according to switch actuating signals control liquid crystal window opens or close printed words.

The mechanism that described driving tooth bar moves can be mounted in switch rotating shaft and tooth bar meshed gears, also with the switch rotating shaft be one or interlock and with the threaded rod of tooth bar engagement.

The utility model compared with prior art has following advantage: 1, it comprises on gas meter, flow meter main body and the operation valve switch state detector, this device can feed back to intelligent control module with switch actuating signals, intelligent control module shows according to switch actuating signals control liquid crystal window opens or closes printed words, and it is in full accord that he can guarantee that the lcd window switch shows with the valve switch state.2, this switch state detector, opening or closing in the process of burnt gas switch, rotating switch rotating shaft driven gear rotates, and then driving tooth bar linear slide, raising up of tooth bar back undaform back extruding elastic electrode contact chip, make elastic electrode contact chip and fixed electorde contact chip produce continuous opening and closing movement, promptly produce pulse or current potential digital signal, according to the digital signal of two electrodes output can judge exactly the burnt gas switch state of putting in place be close fully, complete opening or semi-open state.This design has simple in structure, with low cost, safe and reliable to operation, can be widely used among the various fuel gas pipelines.

Description of drawings

Fig. 1 is the utility model gas meter, flow meter main body and operation valve close valve state synoptic diagram;

Fig. 2 be operation valve described in the utility model open the valve view;

Fig. 3 is that pass of the present utility model valve process detects principle schematic;

Fig. 4 is that the valve process of opening of the present utility model detects principle schematic.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described further.

Embodiment 1: shown in Figure 2 as Fig. 1, a kind of operation valve has put in place the gas meter, flow meter of measuring ability of switch, and it comprises gas meter, flow meter main body 8 and operation valve 7, and gas meter, flow meter main body 8 comprises intelligent control module, liquid crystal window 9; On operation valve 7, comprise a burnt gas switch rotating shaft 1, one gear 2 is installed in burnt gas switch rotating shaft 1, but close on gear 2 positions install one with the gear 2 engagements tooth bar 3 of linear slide also, there is the undaform back at the back of tooth bar 3, close on tooth bar 3 back correspondence positions electrode base 6 is installed, fix two electrode contact plates at electrode base upper rack back correspondence position to a lateral bending song, following is fixed electorde contact chip 5, top is elastic electrode contact chip 4, elastic electrode contact chip 4 tops are aduncate contacts, and elastic electrode contact chip 4 raises up closing on contact position.

As shown in Figure 3, this figure is that the pass valve process of the utility model embodiment 1 detects principle schematic, in closing the process of burnt gas switch, clockwise rotating switch rotating shaft 1 driven gear 2 rotates, and then drive tooth bar 3 straight lines to lower slider, raising up of tooth bar 3 back undaform back extruding elastic electrode contact chips 4, make elastic electrode contact chip 4 and fixed electorde contact chip 5 produce continuous opening and closing movement, promptly produce current potential digital signal " 1010 ", can judge exactly that according to digital signal the burnt gas switch state of putting in place is to have arrived buttoned-up status.

As shown in Figure 4, this figure is that the valve process of opening of the utility model embodiment 1 detects principle schematic, in the process of opening burnt gas switch, rotating counterclockwise switch rotating shaft 1 driven gear 2 rotates, and then driving tooth bar 3 straight lines upwards slide, raising up of tooth bar 3 back undaform back extruding elastic electrode contact chips 4, make elastic electrode contact chip 4 and fixed electorde contact chip 5 produce continuous opening and closing movement, promptly produce current potential digital signal " 0101 ", can judge exactly that according to digital signal the burnt gas switch state of putting in place is to have arrived the complete opening state.

Claims

1. an operation valve has put in place the gas meter, flow meter of measuring ability of switch, it comprises gas meter, flow meter main body (8) and operation valve (7), gas meter, flow meter main body (8) comprises intelligent control module, liquid crystal window (9), on operation valve (7), comprise a burnt gas switch rotating shaft (1), it is characterized in that: go up in described burnt gas switch rotating shaft (1) mechanism that a driving tooth bar (3) moves is installed, there is the undaform back at the back of tooth bar (3), close on tooth bar (3) back correspondence position electrode base (6) is installed, fix two electrode contact plates at electrode base (6) upper rack back correspondence position to a lateral bending song, following is fixed electorde contact chip (5), top is elastic electrode contact chip (4), elastic electrode contact chip (4) top is aduncate contact, and elastic electrode contact chip (4) raises up closing on contact position.

2. have put in place the gas meter, flow meter of measuring ability of switch according to the described operation valve of claim 1, it is characterized in that: the mechanism that described driving tooth bar moves is mounted in switch rotating shaft (1) and tooth bar (3) meshed gears (2).

3. have put in place the gas meter, flow meter of measuring ability of switch according to the described operation valve of claim 1, it is characterized in that: the mechanism that described driving tooth bar moves be with switch rotating shaft (1) for one or interlock and with the threaded rod of tooth bar (3) engagement.