CN212721909U

CN212721909U - On-spot calibrating device of differential pressure gauge

Info

Publication number: CN212721909U
Application number: CN202022106628.3U
Authority: CN
Inventors: 王丛先; 王婷; 刘伟光; 李宝罗; 邵建桥; 逄媛媛
Original assignee: Qingdao Institute Of Measurement Technology
Current assignee: Qingdao Institute Of Measurement Technology
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-03-16
Anticipated expiration: 2030-09-23

Abstract

The utility model discloses an on-spot calibrating device of differential pressure gauge, including the bottom main part, the internally mounted of bottom main part has automatically controlled unit, and the top main part is installed at the top of bottom main part, and the bottom main part includes the shell, and one side of shell is run through and is provided with the connection interface, installs the three-way pipe on the connection interface, and one side of three-way pipe is provided with the force pump, and one side of three-way pipe is provided with pressure sensor, and automatically controlled unit includes the controller, and the bottom of controller has set gradually the copper post, and the bottom of copper post is provided with the dust screen, and the top main part. The utility model relates to a differential pressure gauge field calibration device, the differential pressure gauge field calibration device can effectively solve the problem that the differential pressure gauge is difficult to debug and calibrate on site, and can carry out accurate debugging and calibration according to the numerical value offset of the high-low pressure end of the differential pressure gauge; the micro differential pressure gauge calibration device is provided with an LCD display screen, and can display the pressure in the pipeline after balancing on the LCD display screen.

Description

On-spot calibrating device of differential pressure gauge

Technical Field

The utility model relates to a calibration check out test set field, in particular to little differential pressure meter field calibration device.

Background

The micro differential pressure gauge is an instrument for measuring fluid with small pressure or pressure difference, is widely applied to measurement of positive pressure, negative pressure and differential pressure of gas, is an ideal instrument for testing laboratories, medicine and health, building ventilation, environment monitoring stations, fire safety inspection and clean rooms, and is suitable for measurement and field verification of ventilation and air conditioning systems, clean rooms or fault maintenance of any gas pressure system. The operation is simple and convenient, the reading is clear, and the test tool is indispensable for heating ventilation air-conditioning technicians, operation maintenance engineers and scientific researchers. The instrument has the functions of zero setting and calibration of differential pressure, display of measured value, maintenance of measured value, setting of compensation parameters and the like.

Under the current technical conditions, for the measurement traceability of the micro differential pressure gauge, a field instrument is disassembled and sent to a third party laboratory to be traceed to the measurement standard, and in the field environment, no mature solution is provided, the field traceability requirement can not be met, and the great inconvenience is caused.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art's defect, provide a differential pressure gauge field calibration device.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model relates to a differential pressure gauge field calibration device, including the bottom main part, the internally mounted of bottom main part has automatically controlled unit, the top main part is installed at the top of bottom main part, the bottom main part includes the shell, one side of shell is run through and is provided with the connection interface, install the three-way pipe on the connection interface, one side of three-way pipe is provided with the force pump, one side of three-way pipe is provided with pressure sensor, automatically controlled unit includes the controller, the bottom of controller has set gradually the copper post, the bottom of copper post is provided with the dust screen, the top main part is including the apron main part, install LCD display module and button module in the apron main part in proper order.

As a preferred technical scheme of the utility model, the internally mounted of shell has the battery, the inside of shell has set gradually first installation base and second installation base, be provided with the louvre on the shell.

As an optimal technical scheme of the utility model, the apron main part includes fixed panel, first recess and second recess have set gradually on the fixed panel, first recess and LCD display module looks adaptation, second recess and button module looks adaptation, fixed panel's bottom surface has set gradually third installation base and fourth installation base.

As an optimal technical scheme of the utility model, force pump, pressure sensor, LCD display module and button module all with controller electric connection, battery and controller electric connection.

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

the utility model relates to a differential pressure gauge field calibration device can effectively solve the problem that the differential pressure gauge is difficult to debug in the field and calibrate, the differential pressure gauge calibration device is provided with a control system consisting of a controller, a pressure sensor and a pressure pump, and can carry out accurate debugging and calibration according to the pressure difference of the high and low pressure ends of the differential pressure gauge, the differential pressure gauge is not required to be disassembled, the labor is saved, and the working efficiency is improved; the micro differential pressure gauge calibration device is provided with an LCD display screen, and can display the pressure in the pipeline after balance on the LCD display screen, so that the pressure can be conveniently checked by personnel; the micro differential pressure gauge calibration device has the advantages of compact internal structure design, small volume and portability.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is one of exploded views of the internal structure of the present invention;

fig. 3 is a second exploded view of the internal structure of the present invention;

fig. 4 is a third exploded view of the internal structure of the present invention;

fig. 5 is a control block diagram of the present invention;

in the figure: 1. a bottom body; 11. a housing; 12. connecting an interface; 13. a three-way pipe; 14. a pressure pump; 15. a pressure sensor; 16. a battery; 17. a first mounting boss; 18. a second mounting boss; 19. heat dissipation holes; 2. an electronic control unit; 21. a controller; 22. a dust screen; 23. a copper pillar; 3. a top body; 31. a cover plate main body; 311. fixing the panel; 312. a first groove; 313. a third mounting boss; 314. a fourth mounting boss; 315. a second groove; 32. an LCD display module; 33. and a button module.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example 1

As shown in fig. 1-5, the utility model provides a differential pressure gauge field calibration device, including bottom main part 1, the internally mounted of bottom main part 1 has electrical unit 2, top main part 3 is installed at the top of bottom main part 1, bottom main part 1 includes shell 11, one side of shell 11 is run through and is provided with interface 12, install three-way pipe 13 on the interface 12, one side of three-way pipe 13 is provided with force pump 14, one side of three-way pipe 13 is provided with pressure sensor 15, electrical unit 2 includes controller 21, the bottom of controller 21 has set gradually copper post 23, the bottom of copper post 23 is provided with dust screen 22, top main part 3 includes apron main part 31, install LCD display module 32 and button module 33 on the apron main part 31 in proper order.

Furthermore, a battery 16 is mounted inside the housing 11, a first mounting boss 17 and a second mounting boss 18 are sequentially arranged inside the housing 11, a heat dissipation hole 19 is formed in the housing 11, the heat dissipation hole 19 facilitates heat dissipation 21, and the service life is prolonged.

The cover plate main body 31 includes a fixing panel 311, a first groove 312 and a second groove 315 are sequentially disposed on the fixing panel 311, the first groove 312 is adapted to the LCD display module 32, the second groove 315 is adapted to the button module 33, a third mounting boss 313 and a fourth mounting boss 314 are sequentially disposed on the bottom surface of the fixing panel 311, the third mounting boss 313 is used for fixing the LCD display module 32, and the fourth mounting boss 314 is used for fixing the button module 33.

The pressure pump 14, the pressure sensor 15, the LCD display module 32 and the button module 33 are all electrically connected to the controller 21, the battery 16 is electrically connected to the controller 21, and the battery 16 provides power.

Specifically, the micro differential pressure gauge field calibration device has a component fixing mode as follows: the first mounting boss 17 is used for fixing the cover plate main body 31, the second mounting boss 18 is used for fixing the dust screen 22, the copper column 23 can adopt a stud, the controller 21 and the dust screen 22 are fixedly connected through the copper column 23, the third mounting boss 313 is used for fixing the LCD display module 32, and the fourth mounting boss 314 is used for fixing the button module 33; the micro differential pressure gauge field calibration device comprises the following electric control components: the pressure sensor 15 and the button module 33 are both used as signal input ends of the controller 21, the pressure pump 14 and the LCD display module 32 are both used as signal output ends of the controller 21, the LCD display module 32 is used as a multi-level menu through a preset program, and a person presses the button module 33 to switch a display interface of the LCD display module 32; the use process of the micro differential pressure gauge field calibration device is as follows: the pressure sensor 15 adopts a similar micro-pressure sensor module with the model number of SM5651-003-D-3-SR and the like, a person correspondingly connects the connection interface 12 of the on-site calibrating device of the micro-pressure differential gauge with the high-low pressure end and the low-low pressure end of the micro-pressure differential gauge which need debugging and calibrating, the low-pressure end of the micro-pressure differential gauge is connected with the low-pressure end of the pressure sensor 15 and is connected with the atmosphere, the low-pressure end can be automatically balanced with the atmosphere, the pressure sensor 15 can feed back the data of the high-pressure end to the controller 21, the pipeline pressure measured by the pressure sensor 15 is displayed on the LCD display module 32 through a program, the person can conveniently observe the pressure in the pipeline, and finally the high-pressure end of the micro-pressure differential gauge is debu. The micro differential pressure gauge calibration device has the advantages of compact internal structure design, small volume and portability.

The micro differential pressure gauge on-site calibration device can effectively solve the problem that the micro differential pressure gauge is difficult to debug and calibrate on site, has a control system consisting of a controller, a pressure sensor and a pressure pump, can carry out accurate debugging and calibration on the micro differential pressure gauge according to the pressure difference of the high and low pressure ends of the micro differential pressure gauge, does not need to disassemble the micro differential pressure gauge, saves manpower and improves the working efficiency; the micro differential pressure gauge calibration device is provided with an LCD display screen, and can display the pressure in the pipeline after balance on the LCD display screen, so that the pressure can be conveniently checked by personnel; the micro differential pressure gauge calibration device has the advantages of compact internal structure design, small volume and portability.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The on-site calibrating device for the micro differential pressure gauge comprises a bottom main body (1) and is characterized in that an electric control unit (2) is installed inside the bottom main body (1), a top main body (3) is installed at the top of the bottom main body (1), the bottom main body (1) comprises a shell (11), a connecting interface (12) penetrates through one side of the shell (11), a three-way pipe (13) is installed on the connecting interface (12), a pressure pump (14) is arranged on one side of the three-way pipe (13), a pressure sensor (15) is arranged on one side of the three-way pipe (13), the electric control unit (2) comprises a controller (21), a copper column (23) is sequentially arranged at the bottom of the controller (21), a dust screen (22) is arranged at the bottom of the copper column (23), and a cover plate main body (31) is arranged on the top main body (3), and the cover plate main body (31) is sequentially provided with an LCD display module (32) and a button module (33).

2. The on-site calibration device of the differential pressure gauge according to claim 1, wherein a battery (16) is installed inside the housing (11), a first installation boss (17) and a second installation boss (18) are sequentially arranged inside the housing (11), and a heat dissipation hole (19) is formed in the housing (11).

3. The on-site calibration device of the differential pressure gauge according to claim 1, wherein the cover plate main body (31) comprises a fixing panel (311), a first groove (312) and a second groove (315) are sequentially arranged on the fixing panel (311), the first groove (312) is matched with the LCD display module (32), the second groove (315) is matched with the button module (33), and a third mounting boss (313) and a fourth mounting boss (314) are sequentially arranged on the bottom surface of the fixing panel (311).

4. The on-site calibration device of the micro differential pressure gauge according to claim 2, wherein the pressure pump (14), the pressure sensor (15), the LCD display module (32) and the button module (33) are electrically connected with the controller (21), and the battery (16) is electrically connected with the controller (21).