CN201653645U - Electric digital micromanometer - Google Patents
Electric digital micromanometer Download PDFInfo
- Publication number
- CN201653645U CN201653645U CN2010201748619U CN201020174861U CN201653645U CN 201653645 U CN201653645 U CN 201653645U CN 2010201748619 U CN2010201748619 U CN 2010201748619U CN 201020174861 U CN201020174861 U CN 201020174861U CN 201653645 U CN201653645 U CN 201653645U
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- pressure
- module
- electric digital
- housing
- stepper motor
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Abstract
The utility model relates to an electric digital micromanometer comprising a shell, and a micro-pressure compensator lead screw and a pressure generator which are arranged in the shell, wherein the pressure generator comprises a water box provided with a static pressure air nozzle and a water storage tank connected with a dynamic pressure air nozzle by a pipeline; and the water box is arranged on the micro-pressure compensator lead screw and is connected with the water storage tank by a connecting hose. The electric digital micro-pressure gauge also comprises a stepping motor arranged at the top end in the shell, a small transmission wheel fixed on a rotating shaft of the stepping motor, a large transmission wheel fixed at the top end of the micro-pressure compensator lead screw and a transmission belt for horizontally connecting the small transmission wheel and the large transmission wheel in a transmission manner; and an MCU main control panel is provided with a stepping motor driving module which is controlled by an MCU and is electrically connected with the stepping motor, and can drive the stepping motor to run. The electric digital micro-pressure gauge can lead the water box to move up and down by the transmission of an electric lifting device, and automatically form liquid level difference to generate pressure.
Description
Technical field
The utility model relates to a kind of electric digital micromanometer that the dynamic pressure measurement system of pollution source sample devices is calibrated, examines and determine of can be used for.
Background technology
At present, the existing equipment that is used to calibrate, examine and determine pollution source sample devices dynamic pressure measurement system is the mechanical type compensation micro-pressure meter that China introduces from USSR (Union of Soviet Socialist Republics), and it has accuracy height, good reproducibility, pressure stable characteristics take place.But also there is following defective in the prior mechanical compensation micro-pressure meter: 1) lifting of static pressure end (water casket) is stirred " fine tuning dish " realization by hand by operating personnel, labor capacity is big, operation is difficult for grasping, when using for the first time, operating personnel easily compensation micro-pressure meter is done, even break, when manually pressure taking place, if control is improper, very easily stuck at high range or lower range; 2) existing microbarograph is to come the calculating pressure value by the scale numerical value on degree plate and the fine tuning dish, directly reading; 3) its maximum measurement range of existing microbarograph is-2500～2500Pa, can not satisfy the new demand in market; 4) existing microbarograph environmental parameters such as energy measurement atmospheric pressure, temperature, humidity not also need the corresponding instrumentation of additional configuration, use inconvenience and have increased cost.
The utility model content
The purpose of this utility model is to provide a kind of electric digital micromanometer, and this microbarograph can be finished pressure compensation automatically and directly provide force value, goes back the numerical value of environmental parameters such as energy measurement atmospheric pressure, temperature, humidity simultaneously.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopted is:
A kind of electric digital micromanometer, it includes housing, be arranged at minute-pressure compensator screw rod and pressure generator in the described housing, described pressure generator comprises water casket that is provided with the static pressure valve and the water tank that is connected with the dynamic pressure valve by pipeline, described water casket is arranged on the described minute-pressure compensator screw rod, and be connected with described water tank by connecting flexible pipe, described electric digital micromanometer also comprises can control Motorized lift device and the MCU master control borad that described water casket is done vertical up-or-down movement, described Motorized lift device comprises the stepper motor that is arranged on top in the described housing, be fixed on the little power wheel in the described stepper motor rotating shaft, be fixed on the large drive wheel on described minute-pressure compensator screw rod top and be used for the be in transmission connection driving-belt of described little power wheel and described large drive wheel of level, described MCU master control borad has the step motor drive module that is subjected to MCU control and is electrically connected with described stepper motor, and described step motor drive module can drive described stepper motor running.
Two ends up and down in the described housing are installed with upper supporting plate and the base that vertically wears for described minute-pressure compensator screw rod respectively, described upper supporting plate is passed in the rotating shaft of described stepper motor vertically upward, and described little power wheel and described large drive wheel are arranged on the upper surface of described upper supporting plate.
Described Motorized lift device also includes to be arranged on and is electrically connected the up stroke limit switch and the down stroke limit switch that can limit described water casket range in the described housing and with described MCU master control borad; Described up stroke limit switch is arranged on the described upper supporting plate corresponding to the upper surface of described water casket, and described down stroke limit switch is arranged on the described base corresponding to the lower surface of described water casket; Behind the circuit communication of described up stroke limit switch or described down stroke limit switch and described MCU master control borad, can change the rotation direction of described stepper motor.
Also be provided with support bar between described upper supporting plate and the described base, described support bar is parallel to the setting of described minute-pressure compensator screw rod.
Described MCU master control borad also includes LCD MODULE, data acquisition module, pressure measuring module and environmental parameter measurement module; Described pressure measuring module comprises the differential pressure pick-up that is connected by flexible pipe with described dynamic pressure valve and described static pressure valve, described environmental parameter measurement module comprises digital atmosphere pressure sensor, temperature sensor and humidity sensor, and described LCD MODULE comprises the digital indicator on the outer side panel that is located at described housing; Described pressure measuring module and described environmental parameter measurement module all are electrically connected with described data acquisition module, and described data acquisition module, MCU and described LCD MODULE are electrically connected in regular turn.
Described electric digital micromanometer, also include the operation keyboard on the outer side panel that contiguous described digital indicator is arranged on described housing, described operation keyboard is electrically connected with described MCU master control borad, also can controls described step motor drive module, described pressure measuring module, described environmental parameter measurement module, described data acquisition module and described LCD MODULE by circuit board.
Described stepper motor is the pulse step motor.
Described water tank indicates levelling line.
Described housing and the corresponding position of described water tank offer observation port.
The bottom of described housing is equipped with fixing feet and levelling bolt, and the top of described housing is equipped with spirit bubble.
But the utility model electric digital micromanometer AC/DC, its utilization " u U-tube manometer " pressure measurement principle, transmission by Motorized lift device moves up and down the water casket, automatically form liquid level difference pressure takes place, and, need not manual operations from the motion tracking setup pressure value, operating personnel there is not training request, do not have the hidden danger of toppling over, and the pressure of electronic generation is more stable.By increasing the length of minute-pressure compensator screw rod, making the pressure occurrence scope is-3000～3000Pa, satisfies the new measurement range demand in market.In addition, by LCD MODULE, data acquisition module, pressure measuring module, environmental parameter measurement module and operation keyboard, can directly show environmental parameter values such as the force value of generation and atmospheric pressure, temperature, humidity.
Description of drawings
Fig. 1 is the perspective view of the utility model electric digital micromanometer.
Fig. 2 is the planar structure synoptic diagram of the utility model electric digital micromanometer.
Fig. 3 is the architecture block diagram of MCU master control borad in the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model electric digital micromanometer is described in further detail.
As depicted in figs. 1 and 2, the utility model electric digital micromanometer, it includes housing 1, is arranged at minute-pressure compensator screw rod 2 and pressure generator in the housing 1.Pressure generator comprises water casket 4 that is provided with static pressure valve 3 and the water tank 6 that is connected with dynamic pressure valve 5 by pipeline, water tank 6 subscripts are shown with levelling line 7, water casket 4 is arranged on the minute-pressure compensator screw rod 2, and is connected with water tank 6 by connecting flexible pipe (scheming not shown).Housing 1 mainly encloses structure by top board 8, protecgulum 9, bonnet 10 and outer side panel 11 and forms, and for the ease of the position height of the water level in the observation water tank 6 with respect to levelling line 7, offers observation port 12 in bonnet 10 and water tank 6 corresponding positions.The bottom of housing 1 is equipped with the level(l)ing device that mainly is made of levelling bolt 13 and fixing feet 14, and the top of housing 1 is equipped with spirit bubble 15.The top of housing 1 also is provided with double end valve 16, because of it belongs to prior art, therefore repeats no more here.
The utility model electric digital micromanometer, it also includes can control Motorized lift device and the MCU master control borad 20 that water casket 4 is done vertical up-or-down movement, wherein MCU master control borad 20 be installed on housing 1 outer side panel 11 below.Motorized lift device comprises the stepper motor (scheming not shown) that is arranged on housing 1 inner tip, be fixed on brief biography driving wheel 17 in the stepper motor rotating shaft, be fixed on the large drive wheel 18 on minute-pressure compensator screw rod 2 tops and be used for the be in transmission connection driving-belt of brief biography driving wheel 17 and large drive wheel 18 of level.Wherein, stepper motor can be the pulse step motor.As shown in Figure 3, MCU master control borad 20 has the step motor drive module that is subjected to MCU control and is electrically connected with stepper motor, and the step motor drive module can the drive stepping motor running.Thus, when the step motor drive module drive stepper motor by MCU master control borad 20 turns round, the brief biography driving wheel 17 that is fixed in the stepper motor rotating shaft is rotated, and drive the large drive wheel 18 be fixed on the minute-pressure compensator screw rod 2 by driving-belt and also correspondingly rotate, thereby horizontally rotating of stepper motor and big or small power wheel can be converted to the vertical up-or-down movement of the water casket 4 that is fixed on the minute-pressure compensator screw rod 2.In addition, by changing the structure of microbarograph, increase the length of minute-pressure compensator screw rod 2, can make the pressure occurrence scope is-3000～3000Pa, thereby can satisfy the new measurement range demand in market.
Two ends up and down in housing 1 can be installed with upper supporting plate 19 and the base 26 that vertically wears for minute-pressure compensator screw rod 2 respectively, upper supporting plate 19 is passed in the rotating shaft of stepper motor vertically upward, brief biography driving wheel 17 and large drive wheel 18 are arranged on the upper surface of upper supporting plate 19, can strengthen the transmission of firm Motorized lift device thus.Between upper supporting plate 19 and base 26, be provided with three support bars 21 that are parallel to minute-pressure compensator screw rod 2, to play support, firm effect.
Motorized lift device also includes to be arranged on and is electrically connected the up stroke limit switch and the down stroke limit switch (scheming not shown) that can limit water casket 4 ranges in the housing 1 and with MCU master control borad 20, wherein the up stroke limit switch is arranged on the upper supporting plate 19 corresponding to the upper surface of water casket 4, and the down stroke limit switch is arranged on the base 26 corresponding to the lower surface of water casket 4.Behind the circuit communication of up stroke limit switch or down stroke limit switch and MCU master control borad 20, can change the rotation direction of stepper motor.When water casket 4 presses the contact of up stroke limit switch in uphill process, make the circuit turn-on between up stroke limit switch and the MCU master control borad 20, offer 20 1 electric signal of MCU master control borad, MCU master control borad 20 can be controlled the step motor drive module after receiving this electric signal, make stepper motor carry out antiport, thereby make water casket 4 stop to rise and decline automatically.When water casket 4 triggers the contact of down stroke limit switch in the decline process, make the circuit turn-on between down stroke limit switch and the MCU master control borad 20, can offer 20 1 electric signal of MCU master control borad once more, MCU master control borad 20 can be controlled the step motor drive module after receiving this electric signal once more, stepper motor is shut down, thereby make water casket 4 stop to descend.Thus, the water casket 4 that can guarantee electronic microbarograph moves in restricted portion.
The utility model electric digital micromanometer has automatic air emptying function after adopting said structure, promptly can get rid of the bubble that is connected between water casket 4 and the water tank 6 in the interior distilled water of flexible pipe automatically.The first the utility model that uses, after adding distilled water, under the condition of static pressure valve 3 and 5 zero loads of dynamic pressure valve, starting stepper motor rises water casket 4 automatically, the decline of water table in the water casket 4 correspondingly, water level in the water tank 6 rises, thereby effectively eliminate the bubble in the connecting line, up to the upper surface of water casket 4 roof pressure up stroke limit switch, make the MCU master control borad 20 can control step motor antiport, make water casket 4 stop to rise and decline automatically, water level in the water casket 4 correspondingly rises at this moment, decline of water table in the pipeline that dynamic pressure valve 5 connects between the water tank 6, effectively eliminate the bubble in the connecting line once more,, MCU master control borad 20 control step motors are shut down up to the lower surface of water casket 4 roof pressure down stroke limit switch, thereby make water casket 4 stop to descend, finish automatic air emptying function.
As shown in Figure 3, the MCU master control borad 20 in the utility model also includes pressure measuring module 22, environmental parameter measurement module 23, data acquisition module 24 and liquid crystal display mode 25.Pressure measuring module 22 comprises the differential pressure pick-up that is connected by flexible pipe with dynamic pressure valve 5 and static pressure valve 3, and to measure the force value that produces, its pressure resolution is 0.1Pa.Environmental parameter measurement module 23 comprises instruments such as digital atmosphere pressure sensor, temperature sensor and humidity sensor, can correspondingly measure environmental parameters such as atmospheric pressure, temperature, humidity.LCD MODULE 25 comprises the digital indicator on the outer side panel 11 that is located at housing 1.Wherein, the circuit of the analog device in pressure measuring module 22 and the environmental parameter measurement module 23 all is connected with data acquisition module 24, and data acquisition module 24, MCU and LCD MODULE 25 are electrically connected in regular turn.The measured electrical signal data of analog device in pressure measuring module 22 and the environmental parameter measurement module 23, after data acquisition module 24 data processing (promptly being converted to digital signal), after MCU handles, deliver to LCD MODULE 25 again, directly demonstrate environmental parameter values such as the force value of generation and atmospheric pressure, temperature, humidity with tens digit by digital indicator.
The utility model electric digital micromanometer, it also includes the operation keyboard (scheming not shown) on the outer side panel 11 that contiguous digital indicator is arranged on housing 1.Operation keyboard is electrically connected with MCU master control borad 20 by circuit board, and can control step motor drive module, pressure measuring module 22, environmental parameter measurement module 23, data acquisition module 24 and LCD MODULE 25 by control circuit and carry out the function corresponding operation.
But the utility model electric digital micromanometer AC/DC is a high-precision pressure generation instrument and pressure measuring instruments.Transmission by Motorized lift device moves up and down the water casket, forms liquid level difference automatically pressure takes place, and from the motion tracking setup pressure value, need not manual operations, do not have and topple over and stuck hidden danger, and the pressure of electronic generation is more stable.In addition, by instruments such as pressure measuring module, environmental parameter measurement module, data acquisition module, LCD MODULE, can directly show environmental parameter values such as the force value of generation and atmospheric pressure, temperature, humidity.
Claims (10)
1. electric digital micromanometer, it includes housing, is arranged at minute-pressure compensator screw rod and pressure generator in the described housing, described pressure generator comprises water casket that is provided with the static pressure valve and the water tank that is connected with the dynamic pressure valve by pipeline, described water casket is arranged on the described minute-pressure compensator screw rod, also is connected with described water tank by connecting flexible pipe, and it is characterized in that: it also comprises can control Motorized lift device and the MCU master control borad that described water casket is done vertical up-or-down movement; Described Motorized lift device comprises the stepper motor that is arranged on top in the described housing, be fixed on little power wheel in the described stepper motor rotating shaft, be fixed on the large drive wheel on described minute-pressure compensator screw rod top and be used for the be in transmission connection driving-belt of described little power wheel and described large drive wheel of level; Described MCU master control borad has the step motor drive module that is subjected to MCU control and is electrically connected with described stepper motor, and described step motor drive module can drive described stepper motor running.
2. electric digital micromanometer according to claim 1, it is characterized in that: the two ends up and down in the described housing are installed with upper supporting plate and the base that vertically wears for described minute-pressure compensator screw rod respectively, described upper supporting plate is passed in the rotating shaft of described stepper motor vertically upward, and described little power wheel and described large drive wheel are arranged on the upper surface of described upper supporting plate.
3. electric digital micromanometer according to claim 2 is characterized in that: described Motorized lift device also includes to be arranged on and is electrically connected the up stroke limit switch and the down stroke limit switch that can limit described water casket range in the described housing and with described MCU master control borad; Described up stroke limit switch is arranged on the described upper supporting plate corresponding to the upper surface of described water casket, and described down stroke limit switch is arranged on the described base corresponding to the lower surface of described water casket; Behind the circuit communication of described up stroke limit switch or described down stroke limit switch and described MCU master control borad, can change the rotation direction of described stepper motor.
4. electric digital micromanometer according to claim 2 is characterized in that: also be provided with support bar between described upper supporting plate and the described base, described support bar is parallel to the setting of described minute-pressure compensator screw rod.
5. electric digital micromanometer according to claim 1 is characterized in that: described MCU master control borad also includes LCD MODULE, data acquisition module, pressure measuring module and environmental parameter measurement module; Described pressure measuring module comprises the differential pressure pick-up that is connected by flexible pipe with described dynamic pressure valve and described static pressure valve, described environmental parameter measurement module comprises digital atmosphere pressure sensor, temperature sensor and humidity sensor, and described LCD MODULE comprises the digital indicator on the outer side panel that is located at described housing; Described pressure measuring module and described environmental parameter measurement module all are electrically connected with described data acquisition module, and described data acquisition module, MCU and described LCD MODULE are electrically connected in regular turn.
6. electric digital micromanometer according to claim 5, it is characterized in that: it also includes the operation keyboard on the outer side panel that contiguous described digital indicator is arranged on described housing, and described operation keyboard is electrically connected with described MCU master control borad, also can controls described step motor drive module, described pressure measuring module, described environmental parameter measurement module, described data acquisition module and described LCD MODULE by circuit board.
7. electric digital micromanometer according to claim 1 is characterized in that: described stepper motor is the pulse step motor.
8. electric digital micromanometer according to claim 1 is characterized in that: described water tank indicates levelling line.
9. electric digital micromanometer according to claim 1 is characterized in that: described housing and the corresponding position of described water tank offer observation port.
10. electric digital micromanometer according to claim 1 is characterized in that: the bottom of described housing is equipped with fixing feet and levelling bolt, and the top of described housing is equipped with spirit bubble.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201748619U CN201653645U (en) | 2010-04-29 | 2010-04-29 | Electric digital micromanometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201748619U CN201653645U (en) | 2010-04-29 | 2010-04-29 | Electric digital micromanometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201653645U true CN201653645U (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201748619U Expired - Fee Related CN201653645U (en) | 2010-04-29 | 2010-04-29 | Electric digital micromanometer |
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| Country | Link |
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| CN (1) | CN201653645U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806648A (en) * | 2010-04-29 | 2010-08-18 | 武汉市天虹仪表有限责任公司 | Electric digital micromanometer |
-
2010
- 2010-04-29 CN CN2010201748619U patent/CN201653645U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806648A (en) * | 2010-04-29 | 2010-08-18 | 武汉市天虹仪表有限责任公司 | Electric digital micromanometer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20170429 |