CN202938856U - Integrated gas flowmeter based on differential pressure measurement - Google Patents

Integrated gas flowmeter based on differential pressure measurement Download PDF

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Publication number
CN202938856U
CN202938856U CN 201220622398 CN201220622398U CN202938856U CN 202938856 U CN202938856 U CN 202938856U CN 201220622398 CN201220622398 CN 201220622398 CN 201220622398 U CN201220622398 U CN 201220622398U CN 202938856 U CN202938856 U CN 202938856U
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CN
China
Prior art keywords
differential pressure
shell
pressure measurement
housing
wires hole
Prior art date
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Active
Application number
CN 201220622398
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Chinese (zh)
Inventor
林瑞忠
郑金勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FUZHOU CHANGHUI AUTOMATION SYSTEM Co Ltd
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FUZHOU CHANGHUI AUTOMATION SYSTEM Co Ltd
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Priority to CN 201220622398 priority Critical patent/CN202938856U/en
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Publication of CN202938856U publication Critical patent/CN202938856U/en
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Abstract

The utility model discloses an integrated gas flowmeter based on differential pressure measurement. The integrated gas flowmeter comprises a display front cover, a shell, a hardware circuit board and a back cover, and is characterized in that one end of the shell is connected with the display front cover through threads, and the other end of the shell is connected with the back cover through threads; the hardware circuit board, a compensation pressure transducer and a compensation temperature transducer are arranged in the shell; four thread holes, namely a compensation pressure thread hole, a compensation temperature thread hole, a power supply thread hole and a communication thread hole, are formed on the upper side of the shell; and a differential pressure detection transducer is arranged on the lower part of the shell. The integrated gas flowmeter is reasonable in design, simple in structure, reliable in work, stable in running and high in measuring accuracy, and can meet requirements for wellhead metering of natural gas extraction.

Description

A kind of integrated air flowmeter based on differential pressure measurement
Technical field
The utility model relates to measuring apparatus, is specifically related to a kind of integrated air flowmeter based on differential pressure measurement.
Background technology
Adopt at present the flowmeter of differential pressure mode measurement gas, the split type mode of general employing is carried out product design, orifice plate differential pressure signal (4-20Ma), compensatory pressure signal, compensation temperature signal are passed to respectively to 1 flow accumulation secondary instrument or the computer in pulpit, complete detection, gage work.This structure is unfavorable for commercialization and the on-the-spot construction management of product.
The utility model content
Based on above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of integrated air flowmeter based on differential pressure measurement, and this flowmeter design is reasonable, simple in structure, has reliable operation, stable and measure characteristics accurately.
The technical solution of the utility model is: a kind of integrated air flowmeter based on differential pressure measurement, comprise the demonstration protecgulum, housing, hardware circuit board, bonnet, one end of described housing with show between protecgulum through being threaded, the other end of described housing with bonnet through being threaded, described enclosure interior is provided with hardware circuit board, compensating-pressure transducer and compensation temperature sensor, also be provided with the OLED display board in described housing, the display button drive plate, motherboard, bus board, plate detecting sensor and terminal strip, described housing upside is provided with 4 through wires holes, these 4 through wires holes are respectively the compensatory pressure through wires holes, the compensation temperature through wires hole, power supply through wires hole and communication through wires hole, be provided with the differential pressure measuring sensor in the bottom of housing.
Further, before described demonstration, cover cavity is disposed with red copper pad, tempered glass, O-ring seal, epoxy resin and mirror window trim ring.
Further, described through wires hole respectively has 2 in the housing both sides.When there is no threading, be provided with the flame proof plug on described through wires hole.When being equipped with power lead etc., in described through wires hole to inner O-ring seal, pad and the gland nut of outwards being disposed with.
The beneficial effects of the utility model are: the utility model combines flow detection secondary instrument and differential pressure measuring sensor to make an integrated product, directly is installed on scene.Individual windowing arranged on protecgulum, can show measured value by the OLED screen display.Inside establish 4 Hall switch buttons, by bar magnet, carry out button operation.Enclosure interior is divided into two chambeies of isolation, the front end mounting circuit, and connection terminal is installed in rear end.This integral type flowmeter configures different operating softwares, customizable for measuring the mediums such as general gas flow, saturated vapour, superheated vapor, rock gas, condensation rock gas, moisture.
The accompanying drawing explanation
Fig. 1 is the schematic diagram that pops of the present utility model.
Half view that Fig. 2 is demonstration protecgulum of the present utility model.
Fig. 3 is local revolved sectional view of the present utility model.
The full view that Fig. 4 is bonnet of the present utility model.
Fig. 5 is that housing of the present utility model is analysed and observe view (containing two threading signals).
Label declaration: 1-shows protecgulum 2-housing 3-bonnet 4-compensatory pressure through wires hole 5-compensation temperature through wires hole 6-power supply, shell 19-display screen is moulded in the installation of communication through wires hole 8-red copper pad 9-tempered glass 10-epoxy resin 11-O-ring seal 12-mirror window trim ring 13-differential pressure measuring sensor 14-O-ring seal 15-pad 16-gland nut 17-flame proof plug 18-connection terminal and shell 20-bus board is moulded in the mainboard installation and shell 21-hardware circuit board is moulded in the sensor circuit installation.
Embodiment
With reference to legend 1 ~ 5, a kind of integrated air flowmeter based on differential pressure measurement, comprise and show protecgulum 1, housing 2, hardware circuit board, bonnet 3, one end of described housing 2 with show that 1 of protecgulum is through being threaded, the other end of described housing 2 with bonnet 3 through being threaded, described housing 2 inside are provided with hardware circuit board 21, compensating-pressure transducer and compensation temperature sensor, also be provided with OLED display board, display button drive plate, motherboard, bus board, plate detecting sensor and terminal strip in described housing 2
It is respectively that shell 19 is moulded in display screen and mainboard installation that 4 working of plastics are arranged in above-mentioned housing 2; Connection terminal is installed and is moulded shell 18; Shell is moulded in the protection of sensor circuit bonnet; Bus board and sensor circuit are installed and are moulded shell 20.
Display screen, cpu motherboard, keypad are installed on display screen and the mainboard installation is moulded in shell; Bus board is installed on bus board and the sensor circuit installation is moulded on shell, described bus board and sensor circuit are installed and are moulded 4 mounting receptacles of design on shell, the display screen combined and mainboard are installed to mould on 1 mounting receptacle of shell insertion and are buckled together, 4 convertible 4 display orientations of socket, facilitate on-the-spot different angles to install and display screen still can normal orientation show.The testing circuit of the back side setting pressure sensor of bus board, install the protection of bonnet upper sensor circuit bonnet and mould shell, is installed on the ante-chamber in housing after locking.Connection terminal is installed and moulded shell is connection terminal, installs and back cavity.
Described housing 2 upsides are provided with 4 through wires holes, and these 4 through wires holes are respectively compensatory pressure through wires hole 4, compensation temperature through wires hole 5 and power supply, communication through wires hole 6, in the bottom of housing 2, are provided with differential pressure measuring sensor 13.
In the present embodiment, described demonstration protecgulum 1 inner chamber is disposed with red copper pad 8, tempered glass 9, O-ring seal 11, epoxy resin 10 and mirror window trim ring 12.
In the present embodiment, described through wires hole respectively has 2 in housing 2 both sides.When there is no threading, be provided with flame proof plug 17 on described through wires hole.When being equipped with power lead etc., in described through wires hole to inner O-ring seal 14, pad 15 and the gland nut 16 of outwards being disposed with.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model instructions and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present utility model.

Claims (5)

1. the integrated air flowmeter based on differential pressure measurement, comprise the demonstration protecgulum, housing, hardware circuit board, bonnet, it is characterized in that: an end of described housing with show between protecgulum through being threaded, the other end of described housing with bonnet through being threaded, described enclosure interior is provided with hardware circuit board, compensating-pressure transducer and compensation temperature sensor, described housing upside is provided with 4 through wires holes, these 4 through wires holes are respectively the compensatory pressure through wires holes, the compensation temperature through wires hole, power supply through wires hole and communication through wires hole, be provided with the differential pressure measuring sensor in the bottom of housing.
2. the integrated air flowmeter based on differential pressure measurement according to claim 1 is characterized in that: before described demonstration, cover cavity is disposed with red copper pad, tempered glass, O-ring seal, epoxy resin and mirror window trim ring.
3. the integrated air flowmeter based on differential pressure measurement according to claim 1, it is characterized in that: described through wires hole respectively has 2 in the housing both sides.
4. according to the described integrated air flowmeter based on differential pressure measurement of claim 1 or 3, it is characterized in that: be provided with the flame proof plug on described through wires hole.
5. according to the described integrated air flowmeter based on differential pressure measurement of claim 1 or 3, it is characterized in that: described through wires hole is interior to inner O-ring seal, pad and the gland nut of outwards being disposed with.
CN 201220622398 2012-11-22 2012-11-22 Integrated gas flowmeter based on differential pressure measurement Active CN202938856U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220622398 CN202938856U (en) 2012-11-22 2012-11-22 Integrated gas flowmeter based on differential pressure measurement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220622398 CN202938856U (en) 2012-11-22 2012-11-22 Integrated gas flowmeter based on differential pressure measurement

Publications (1)

Publication Number Publication Date
CN202938856U true CN202938856U (en) 2013-05-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220622398 Active CN202938856U (en) 2012-11-22 2012-11-22 Integrated gas flowmeter based on differential pressure measurement

Country Status (1)

Country Link
CN (1) CN202938856U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104266690A (en) * 2014-10-11 2015-01-07 杭州冠一流体技术有限公司 Integrating instrument circuit of differential pressure flowmeter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104266690A (en) * 2014-10-11 2015-01-07 杭州冠一流体技术有限公司 Integrating instrument circuit of differential pressure flowmeter
CN104266690B (en) * 2014-10-11 2017-05-24 杭州冠一流体技术有限公司 Integrating instrument circuit of differential pressure flowmeter

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