CN102013184A - Simulation digital pressure gage - Google Patents

Simulation digital pressure gage Download PDF

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Publication number
CN102013184A
CN102013184A CN 201010584464 CN201010584464A CN102013184A CN 102013184 A CN102013184 A CN 102013184A CN 201010584464 CN201010584464 CN 201010584464 CN 201010584464 A CN201010584464 A CN 201010584464A CN 102013184 A CN102013184 A CN 102013184A
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CN
China
Prior art keywords
shell
cover plate
digital
digital pressure
transparent cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN 201010584464
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Chinese (zh)
Inventor
黄斌
张泉
徐建良
邓素萍
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.)
Nanjing College of Chemical Technology
Original Assignee
Nanjing College of Chemical Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing College of Chemical Technology filed Critical Nanjing College of Chemical Technology
Priority to CN 201010584464 priority Critical patent/CN102013184A/en
Publication of CN102013184A publication Critical patent/CN102013184A/en
Pending legal-status Critical Current

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Abstract

The invention provides a simulation digital pressure gage, belonging to the technical field of display instrument and relating to a simulation digital pressure measurement instrument used in a teaching and training device. The simulation digital pressure gage comprises a shell, a digital display, a signal wire and a connection pipe joint, wherein the shell is provided with a window; the window is provided with a transparent cover plate; a unit name board is installed at one side of the cover plate; and the shell is internally provided with the digital display, and the displaying window is over against the cover plate. In the invention, a mode of combining the shell and the digital display is adopted, thus reading is direct, correct and convenient, a measured medium is not needed when in training, and the simulation digital pressure gage has flexible and reliable detection, good stability, long service life and the like; and simultaneously, the reading and the unit on the unit name board are combined into a complete reading, thus the simulation digital pressure gage is extremely precise and has good market application value.

Description

The simulated digital tensimeter
Technical field
The invention belongs to the display instrument technical field, relate to a kind of display instrument, be specifically related to a kind of simulated digital pressure measuring instruments that in teaching training apparatus, uses, be used to imitate conventional online digital pressure measurement instrument.
Background technology
Conventional digital pressure gauge is the on-line measurement instrument, when the measured medium pressure of cut-in pressure table changes, pass to the pressure-sensitive diaphragm of sensor by pressure interface, sensor is changed the electric signal of induction through amplification, V/A, send CPU to handle, there is decimal number to demonstrate, thereby and provides analog quantity or digital quantity output to realize the process that pressure shows, controls and change is sent by the size of measuring pressure.
But on the industrial processes actual training device of enterprise or universities and colleges, need to use with the similar measurement instrument of actual industrial production process condition, need a kind ofly to be installed in that (actual is no material on the process simulation actual training device, stress-free equipment) simulated digital pressure measuring instruments, the instrument contour structures also needs to adopt the contour structures of true digital pressure gauge, the pressure that need experience medium when but actual online digital pressure gauge is measured just has pressure value to be shown, if when not experiencing the pressure of measured medium be the size that can not demonstrate pressure, therefore in the process simulation actual training device, to in instrument and connecting pipe, pass to actual medium and just can test and operation training, therefore on the process simulation actual training device of no material, need a kind of simulated digital tensimeter of the demonstration pressure size that can change according to the normalized current signal magnitude of 4~20mA DC.In addition, if with actual digital pressure pressure measuring instruments, must pass to actual material so in the actual training device and form real pressure, this just to actual training device cause making, experimentation cost height, have high input, the maintaining difficulty, nor be convenient to test, complicated operation, situations such as leakage easily take place, dangerous, real training can not be carried out, maintenance is wasted time and energy.
Summary of the invention
The objective of the invention is to be the solution the deficiencies in the prior art, and the online digital pressure measurement instrument of a kind of simulation that provides.
The present invention is when practical application, need not to pass to actual medium, by a signal converter, dc current signal with 4~20mA is converted to the receptible signal of light-emitting diode display earlier, demonstrate by the size of wall pressure by light-emitting diode display again, the reading that can be on the online digital pressure gauge of emulation directly shows tested pressure signal, outward appearance, image and digital pressure gauge is the same really.
For achieving the above object, the present invention is achieved by the following technical solutions:
A kind of simulated digital tensimeter mainly comprises meter case, LED digital indicator, signal wire joint and connecting pipe joint; Described shell is a hollow structure, and the front of shell has a rectangle window, is fixed with transparent cover plate on the window, on the shell of transparent cover plate one side the pressure unit nameplate is installed; The shell periphery is provided with and is used for the simulated digital pressure measuring instrument is fixedly mounted on connecting pipe joint on the equipment under test; The shell internal fixation is equipped with the LED digital indicator, and the display window of digital indicator is over against transparent cover plate; The shell periphery is provided with and is used for signal wire joint that external signal line is linked to each other with in the enclosure LED digital indicator of fixed installation.
Usually, the manometric shell profile of described simulated digital is cylindrical; Described transparent cover plate is organic glass or plastic material.
The invention has the beneficial effects as follows:
The mode that simulated digital tensimeter of the present invention has adopted shell to combine with digital indicator, not only reading is directly accurate, convenient, and owing to need not to pass to actual measured medium during real training, only need the dc current signal of input 4~20mA, size with current signal simulation actual pressure signal, can not produce leakage phenomenon like this, cost and input have been reduced, be not subjected to the restriction of service condition, (4~20mA) size of standard demonstrates the size of institute's measuring pressure, can not use in having simulation training device in kind according to input current signal, everywhere can real training, have and detect flexibly, reliably, good stability, advantages such as life-span length; Simultaneously, the unit on reading and the unit nameplate is combined into a complete reading, and is very accurate, has good market using value.
Description of drawings
Fig. 1 is the front view of the embodiment of the invention; Fig. 2 is a functional-block diagram of the present invention.
Among the figure: the 1-shell; 2-unit's nameplate; The 3-signal wire joint; The 4-signal wire; 5-connecting pipe joint; The 6-connecting pipe; The 7-transparent cover plate.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done concrete introduction.
Embodiment
Fig. 1 is the front view of the embodiment of the invention, and as shown in the figure, the simulated digital pressure display table of present embodiment comprises shell 1, LED digital indicator (not shown), transparent cover plate 7, signal wire joint 3, signal wire 4 and connecting pipe joint 5 and connecting pipe 6; In order to play simulated effect, shell 1 adopts cylindrical, or directly adopts the shell of existing pressure display table.Shell 1 is a hollow structure, is provided with opening in the front of shell 1, and transparent cover plate 7 is installed on opening, can have an X-rayed mounted component in the shell 1; LED digital indicator (not shown) is fixedly mounted in the hollow of shell 1, and reading district (being display window) faces transparent cover plate 7, the directly reading of display digit display; The unit's of being equipped with nameplate 2 on the shell 1 of transparent cover plate 7 one sides, unit are MPa (kPa) etc., and the unit of the pressure on the number of demonstration and unit nameplate has just constituted a complete reading.
As shown in Figure 2, digital indicator adopts two-wire system to carry out the signal transmission, characteristics are to be provided and the corresponding 4~20mA simulating signal of pressure range by process simulation software and DCS system under no medium situation, by change-over circuit, the driving circuit of digital indicator, thereby reach the purpose of imitating online digital pressure meter.Simply, intuitively, be convenient to demonstration, operation training.
The periphery of shell 1 is provided with connecting pipe joint 5, and connecting pipe 6 is fixedly mounted on the connecting pipe joint 5, and connecting pipe 6 is used for fixedlying connected with pipeline, is about to simulated digital tensimeter of the present invention and is installed on the process equipments such as pipeline, reactor, tower, pump.
Also be provided with signal wire joint 3 on the periphery of shell 1, signal wire 4 is introduced in the shell 1 from the outside by signal wire joint 3, be connected with the LED digital indicator in being fixedly mounted on shell 1, give current signal of digital indicator, the processing of the circuit board in digital indicator, show a corresponding pressure value by digital indicator, because the display window of digital indicator faces transparent cover plate 7, therefore can be clear, the reading on the reading number display easily.
In order to save cost and easy to process, above-mentioned transparent cover plate 7 can adopt materials such as organic glass, plastic cement to make.
Present embodiment in use, connecting pipe 6 is fixedlyed connected with pipeline or equipment, signal wire 4 is connected with the DCS system, when real training, give electric signal of simulated digital tensimeter by simulation operations station (computing machine),, show corresponding reading through the processing of digital indicator, force value just can be read easily by unit on the bonding unit nameplate 2.
Just can carry out real training owing to when real training, need not to pass to actual medium, therefore highly beneficial for maintaining; And what the present invention adopted is digital wash, directly shows numerical value, need not to convert, and reading comes into plain view.The real training cost is lower, and is easy to operate, do not have the misgivings of leakage, has very high using value.
The foregoing description does not limit the present invention in any form, and all employings are equal to the technical scheme that mode obtained of replacement or equivalent transformation, all drop in protection scope of the present invention.

Claims (3)

1. a simulated digital tensimeter is characterized in that comprising meter case, LED digital indicator, signal wire joint and connecting pipe joint; Described shell is a hollow structure, and the front of shell has a rectangle window, is fixed with transparent cover plate on the window, on the shell of transparent cover plate one side the pressure unit nameplate is installed; The shell periphery is provided with and is used for the simulated digital pressure measuring instrument is fixedly mounted on connecting pipe joint on the equipment under test; The shell internal fixation is equipped with the LED digital indicator, and the display window of digital indicator is over against transparent cover plate; The shell periphery is provided with and is used for signal wire joint that external signal line is linked to each other with in the enclosure LED digital indicator of fixed installation.
2. simulated digital tensimeter as claimed in claim 1, the profile that it is characterized in that shell is cylindrical.
3. simulated digital tensimeter as claimed in claim 1 is characterized in that transparent cover plate is an organic glass.
CN 201010584464 2010-12-13 2010-12-13 Simulation digital pressure gage Pending CN102013184A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201010584464 CN102013184A (en) 2010-12-13 2010-12-13 Simulation digital pressure gage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201010584464 CN102013184A (en) 2010-12-13 2010-12-13 Simulation digital pressure gage

Publications (1)

Publication Number Publication Date
CN102013184A true CN102013184A (en) 2011-04-13

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Application Number Title Priority Date Filing Date
CN 201010584464 Pending CN102013184A (en) 2010-12-13 2010-12-13 Simulation digital pressure gage

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CN (1) CN102013184A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103714728A (en) * 2013-12-18 2014-04-09 浙江中控科教仪器设备有限公司 Simulation pressure gauge
CN106248140A (en) * 2016-08-02 2016-12-21 马鞍山市亿格仪表有限公司 A kind of bluetooth digital pressure gauge

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
《上海铁道大学学报》 19980531 谭喜堂、俞凯、李云、王倩华 《双针气压表动作仿真研究》 第19卷, 第5期 2 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103714728A (en) * 2013-12-18 2014-04-09 浙江中控科教仪器设备有限公司 Simulation pressure gauge
CN103714728B (en) * 2013-12-18 2016-08-24 浙江中控科教仪器设备有限公司 Simulation pressure gauge
CN106248140A (en) * 2016-08-02 2016-12-21 马鞍山市亿格仪表有限公司 A kind of bluetooth digital pressure gauge

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Open date: 20110413