CN201177546Y - Pressure generator for pressure calibrating - Google Patents
Pressure generator for pressure calibrating Download PDFInfo
- Publication number
- CN201177546Y CN201177546Y CNU2007201834665U CN200720183466U CN201177546Y CN 201177546 Y CN201177546 Y CN 201177546Y CN U2007201834665 U CNU2007201834665 U CN U2007201834665U CN 200720183466 U CN200720183466 U CN 200720183466U CN 201177546 Y CN201177546 Y CN 201177546Y
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- China
- Prior art keywords
- pressure
- motor
- baffle plate
- connecting rod
- generating device
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- Expired - Fee Related
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Abstract
The utility model relates to a pressure generating device used for calibrating the pressure, comprising a piston, a connecting bar force guide mechanism and a motor, wherein a piston cylinder is fixed by two fixing brackets and is provided with a pressure output port which is connected with the outside; the connecting bar force guide mechanism comprises two parallel connecting bars, two ends of the connecting bar are connected with baffle plates, the connecting bar is sleeved between the two fixing brackets and can slide between the two fixing brackets, the baffle plate on the connecting bar away from the motor end is connected with a cylinder rod, the baffle plate at the other end is matched with a screw mandrel connected with the motor through a nut on the baffle plate; a pair of guide rods is arranged between the motor and the fixing bracket of the piston cylinder and is arranged in parallel with the connecting bars of the connecting bar force guide mechanism, and the baffle plate with the nut is sleeved on the guide rods and can slide between the guide rods; the motor is connected with the screw mandrel through a coupling; and the other side of the motor is provided with an adjusting hand wheel. The device is suitable for the automatic or manual pressure production, has the advantages of stable pressure, high accuracy, high speed, and the like and is arranged on various manual pressure calibrating devices, semiautomatic pressure calibrating devices and full automatic pressure calibrating devices.
Description
[technical field]
The utility model relates to a kind of pressure equipment of making, and refers in particular to a kind of Pressure generator that is used for pressure calibration.
[background technology]
Common pressure series products has been widely used in industries such as heating power, chemical industry.And the enterprise or the metrological service that produce these pressure series products need carry out the performance verification according to the rules that relevant departments formulate to the error of indication of these pressure series products.Traditional method of calibration is by manually finishing by some manual or semi-automatic pressure generators, has that workload is big, there is personal error in low the adding of efficient, causes its terminal check result accurate inadequately.For this reason, some unit develops some calibration equipments that can make pressure automatically, but also has the not science of constructing, and the pressure limit poor controllability, makes pressure and needs manual shift, makes many defectives such as pressing shakiness.
[summary of the invention]
The purpose of this utility model is to have overcome above-mentioned defective, and a kind of pressure-generating device that can be used for pressure calibration is provided, and it can be finished automatic or manual and make pressure, and make press high, make that pressure speed is fast, good seal, precision advantages of higher.
The purpose of this utility model is achieved in that a kind of pressure-generating device that is used for pressure calibration, its improvements are: described pressure-generating device comprises piston, connecting rod power-guiding machine structure and motor, piston cylinder is fixed by two fixed mounts, piston cylinder is provided with a pressure output, and pressure output links to each other with the outside; Connecting rod power-guiding machine structure comprises two parallel linkage, the connecting rod two ends are connected with baffle plate, connecting rod is set between two fixed mounts and can slides betwixt, and the baffle plate away from motor side on the connecting rod links to each other with piston rod, and other end baffle plate cooperates with the screw mandrel that links to each other with motor by the nut on it;
Be provided with guide rod between motor and piston cylinder fixed mount, guide rod is for being in a parallel set in pairs and with the connecting rod of connecting rod power-guiding machine structure, and the baffle plate of band nut wears on it and can slide betwixt;
Described motor links to each other with screw mandrel by shaft joint; Described motor opposite side is provided with a control hand wheel;
Described motor is a stepper motor;
Described motor is a servomotor.
Than common Pressure generator, but the beneficial effects of the utility model have been to provide a kind of to need simple operations to make the high-performance pressure-generating device of pressure for manometer task instrument with regard to high precision.
[description of drawings]
Below in conjunction with drawings and Examples the utility model is described further.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the utility model one specific embodiment synoptic diagram.
[embodiment]
As shown in Figure 1, pressure-generating device comprises piston, connecting rod power-guiding machine structure and motor 1, and piston cylinder 9 is fixing by two fixed mounts 3, and piston cylinder 9 is provided with a pressure output 12, and pressure output 12 links to each other with the outside; Connecting rod power-guiding machine structure comprises two parallel linkage 8, connecting rod 8 two ends are connected with baffle plate 5,11, connecting rod 8 is set in 3 of two fixed mounts and can slides betwixt, baffle plate 11 away from motor 1 end on the connecting rod 8 links to each other with piston rod 10, and other end baffle plate 5 cooperates with the screw mandrel 6 that links to each other with motor 1 by the nut 4 on it.
Be illustrated in figure 2 as the utility model one specific embodiment, when this device is used for pressure calibration usually, for guaranteeing high precision, good seal and high pressure output, two covers or two covers should be set with this different pressure-generating device of upper cylinder body volume, each device is connected to valve and parallel connection is connected.Be provided with two cover pressure generating meanss in the specific embodiment herein, it is small one and large one two not isometric piston cylinders.Big piston cylinder pressure reference device divides two-way output, one the tunnel links to each other with media Containers 18 through first valve 14, another road second valve 15 links to each other with little pressure reference device, valve piston cylinder pressure reference device also links to each other with tested appliance interface 16, pressure reference interface 17, tested utensil linked to each other with tested appliance interface 16 when device used, and pressure transducer links to each other with pressure reference interface 17.
Need during device work through pressurization and decompression two processes:
Pressure process: open first valve 14 and second valve 15, begin to make 1 retrograde rotation of two motors, two motors are straight-line displacement via feed screw nut's thaumatropy, driving piston cylinder 9 inner piston rods 10 retreats, make its inside be full of medium, the motor 1 of cutting out first valve, 14 rear drive big piston cylinder pressure reference devices is just changeing, medium supercharging in the compression piston cylinder 9, after arriving certain pressure, close second valve 15, the motor 1 that drives little pressure reference device is just changeing, and makes medium compression pressure continuation increase in its piston cylinder 9, by greatly, the difference of valve piston pressure reference device is made press fit, produces the required pressure of verification.
Decompression process: after the required test pressure test of arrival finishes, drive motor 1 counter-rotating of valve piston cylinder standard apparatus, piston rod 10 retreats, and pressure descends, after pressure no longer descends, make a call to second and open valve 15, drive motor 1 counter-rotating of big piston cylinder standard apparatus, pressure is continuous to descend, after arriving minimum pressure, make a call to first and drive valve 14, whole pressure system communicates with atmospheric pressure, finishes pressure decline process.
The utility model adopts piston rod to pass through screw mandrel, the nut fit structure is via driven by motor, the rotation of motor is converted to the straight-line displacement of piston rod, reduced the spin friction loss of piston in piston cylinder, the sealing of system improves greatly, and make and press height relevant by piston cylinder inner carrier area, piston area is more little, it is high more to make pressure, make and press precision and motor, screw mandrel, the nut body quality of fit is relevant, and screw mandrel often all is high-precision, system can adopt high segmentation step pitch motor-driven and driven by servomotor in addition, thereby the accuracy and the continuous adjustability of pressure have been guaranteed to make, and can cooperate with computing machine by simple outer connected control system and interface circuit, and adopt image identification system in the testing process, thus constitute a kind of full-automatic pressure calibration equipment.
It is to be noted; of the present utility modelly be not limited to above-mentioned embodiment; for example medium is not limited to air in the piston cylinder; can be all kinds of media of castor-oil plant wet goods; any simple modification, equivalent variations and modification that any those skilled in the art do the foregoing description in based on technical solutions of the utility model all belong in the protection domain of the present utility model.
Claims (6)
1. pressure-generating device that is used for pressure calibration, it is characterized in that: described pressure-generating device comprises piston, connecting rod power-guiding machine structure and motor, piston cylinder is fixed by two fixed mounts, and piston cylinder is provided with a pressure output, and pressure output links to each other with the outside; Connecting rod power-guiding machine structure comprises two parallel linkage, the connecting rod two ends are connected with baffle plate, connecting rod is set between two fixed mounts and can slides betwixt, and the baffle plate away from motor side on the connecting rod links to each other with piston rod, and other end baffle plate cooperates with the screw mandrel that links to each other with motor by the nut on it.
2. pressure-generating device according to claim 1 is characterized in that: be provided with guide rod between motor and piston cylinder fixed mount, guide rod is for being in a parallel set in pairs and with the connecting rod of connecting rod power-guiding machine structure, and the baffle plate of band nut wears on it and can slide betwixt.
3. pressure-generating device according to claim 1 is characterized in that: described motor links to each other with screw mandrel by shaft joint.
4. pressure-generating device according to claim 3 is characterized in that: described motor opposite side is provided with a control hand wheel.
5. pressure-generating device according to claim 4 is characterized in that: described motor is a stepper motor.
6. pressure-generating device according to claim 4 is characterized in that: described motor is a servomotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201834665U CN201177546Y (en) | 2007-12-03 | 2007-12-03 | Pressure generator for pressure calibrating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201834665U CN201177546Y (en) | 2007-12-03 | 2007-12-03 | Pressure generator for pressure calibrating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201177546Y true CN201177546Y (en) | 2009-01-07 |
Family
ID=40217566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201834665U Expired - Fee Related CN201177546Y (en) | 2007-12-03 | 2007-12-03 | Pressure generator for pressure calibrating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201177546Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042895A (en) * | 2010-11-26 | 2011-05-04 | 中国航空工业集团公司北京长城计量测试技术研究所 | Sine pressure generator with differential piston |
| CN103344373A (en) * | 2011-12-23 | 2013-10-09 | 合肥工业大学 | Method for carrying out pressure fluctuation calibration on pressure sensor |
| CN106546379A (en) * | 2015-09-22 | 2017-03-29 | 南京理工大学 | For the integrated apparatus that quiet dynamic force in situ is demarcated |
| CN106568603A (en) * | 2016-11-10 | 2017-04-19 | 江苏三能动力总成有限公司 | Device for controlling vehicle slow acceleration and method for controlling vehicle slow acceleration |
| CN110736585A (en) * | 2019-10-21 | 2020-01-31 | 红旗仪表有限公司 | high-pressure precise pressure control method |
| CN112945458A (en) * | 2021-02-02 | 2021-06-11 | 同济大学 | Automatic test system, method and device for pressure gauge |
-
2007
- 2007-12-03 CN CNU2007201834665U patent/CN201177546Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042895A (en) * | 2010-11-26 | 2011-05-04 | 中国航空工业集团公司北京长城计量测试技术研究所 | Sine pressure generator with differential piston |
| CN102042895B (en) * | 2010-11-26 | 2013-03-20 | 中国航空工业集团公司北京长城计量测试技术研究所 | Sine pressure generator with differential piston |
| CN103344373A (en) * | 2011-12-23 | 2013-10-09 | 合肥工业大学 | Method for carrying out pressure fluctuation calibration on pressure sensor |
| CN103344373B (en) * | 2011-12-23 | 2015-03-25 | 合肥工业大学 | Method for carrying out pressure fluctuation calibration on pressure sensor |
| CN106546379A (en) * | 2015-09-22 | 2017-03-29 | 南京理工大学 | For the integrated apparatus that quiet dynamic force in situ is demarcated |
| CN106568603A (en) * | 2016-11-10 | 2017-04-19 | 江苏三能动力总成有限公司 | Device for controlling vehicle slow acceleration and method for controlling vehicle slow acceleration |
| CN110736585A (en) * | 2019-10-21 | 2020-01-31 | 红旗仪表有限公司 | high-pressure precise pressure control method |
| CN112945458A (en) * | 2021-02-02 | 2021-06-11 | 同济大学 | Automatic test system, method and device for pressure gauge |
| CN112945458B (en) * | 2021-02-02 | 2022-05-20 | 同济大学 | Automatic test system, method and device for pressure gauge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090107 Termination date: 20100104 |