CN1083924A - Multi-channel standard pressure signal generator - Google Patents
Multi-channel standard pressure signal generator Download PDFInfo
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- CN1083924A CN1083924A CN 93116747 CN93116747A CN1083924A CN 1083924 A CN1083924 A CN 1083924A CN 93116747 CN93116747 CN 93116747 CN 93116747 A CN93116747 A CN 93116747A CN 1083924 A CN1083924 A CN 1083924A
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- floating ball
- millimeters
- signal generator
- ball device
- counterweight
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- 239000003990 capacitor Substances 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000012795 verification Methods 0.000 abstract description 3
- 238000013016 damping Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000015111 chews Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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Abstract
Multi-channel standard pressure signal generator system is installed in a plurality of floating ball devices of being made up of nozzle, nozzle core, ball float and counterweight on the pipeline board, the inlet channel of each floating ball device is connected to same air supply source, the porch of each inlet channel is equipped with the different constant throttling orifice plate in aperture respectively, each floating ball device is furnished with the fixing counterweight that varies in weight respectively, each floating ball device is furnished with air-capacitor respectively and is respectively equipped with output interface, exports different normal pressure signals.The signal accuracy that this signal generator connects confession all is better than 0.1% and good stability, and the self-correcting of can supply verification, demarcating pneumatic instrument and intelligence instrument is used.
Description
The present invention relates to the gaseous tension signal source device, particularly demarcate, proofread and correct the normal pressure signal generation apparatus of usefulness as pneumatic gage.
With the liquid level in the static pressure method measuring vessel, need to proofread and correct measured value with the normal pressure signal, obtaining accurate hydraulic pressure value, and then draw accurate level gauging result.Known this class standard signal source, " the YJF type standard float-ball type pressure gauge " produced as Shenyang City's pneumatic instrument two factories is exactly a kind of convectional signals source that can carry out pressure magnitude transmission and verification manometer.Fig. 1 illustrates this known manometric structure principle chart.From the air process filter 80 of source of the gas, flow regulator 20 enters nozzle 30, chews 40 through throttling again and sprays to ball float 50.When gaseous tension equaled or exceeded the weight of counterweight 60 on it in the air chamber below the ball float, ball float was together floated together with counterweight, and by the outside exhaust in the gap between ball float and nozzle, final system reaches balance.Air chamber pressure after stable is drawn through manostat (air-capacitor) 70, is the normal pressure signal.Change counterweight, can obtain the output of different pressures signal.
Adopt this pressure gauge, obtain the output of multiple signal, must be through artificial replacing counterweight, and the stability of counterweight is very poor, very easily is subjected to the interference of extraneous mechanical vibration.Even more noteworthy, output signal is the function of flow, thereby exports for the air pressure signal of acquisition standard, must regulate flow when the conversion output valve, reaches the corresponding numerical value of appointment when dispatching from the factory.These all make this pressure gauge use inconvenience, are difficult to provide stable signal again, can not satisfy the scene and use as the verification instrument, more can not become the standard signal from normal moveout correction.
The object of the present invention is to provide a kind of normal pressure telltale that multiple stable output signal can be provided easily.
Above-mentioned purpose realizes as follows.A plurality of floating ball devices are installed on the pipeline board, and the inlet channel of each floating ball device is connected to same air supply source, and each inlet channel enters the mouth into the different constant throttling orifice plate in aperture is housed, and the stable air feed of required flow is provided for each floating ball device.Described constant throttling orifice plate is also formed weakening damping link with the air-capacitor that each floating ball device is joined, and further guarantees the stability of output signal.
Each floating ball device is equipped with fixing, the counterweight that has nothing in common with each other, join counterweight quality cooperate with the aperture of described constant throttling orifice plate, provide the normal pressure signal output of different numerical value respectively.
Described each floating ball device adopts the continuous air feed of same source of the gas, and each standard signal of gained is output continuously, as the switchable electromagnetic gas valve of configuration on each output pipe, then can realize from normal moveout correction or demarcation.
Use multi-channel standard pressure signal generator of the present invention, no matter in the instrument box of indoor or outdoors, all can long-term stability carry out, provide the multiple standards pressure signal for selecting for use or the use of automaticallying switch.In-10 ℃ to 50 ℃ ambient temperature range, the standard signal precision all is better than 0.1%.
Describe the embodiment of multi-channel standard pressure signal generator of the present invention in detail below in conjunction with accompanying drawing and by instantiation, wherein:
Fig. 1 is the manometric structure principle chart of prior art YJF type standard float-ball type;
Fig. 2 is the structural representation of multi-channel standard pressure signal generator embodiment of the present invention.
It is that represented as cut-away section among the figure, the nozzle core 7 of each floating ball device is fixed on the described pipeline board with screw 9 on 210 millimeters * 80 millimeters the pipeline board 3 that embodiment shown in Figure 2 system is contained in a planar dimension with three floating ball devices.The inlet channel of each floating ball device is connected to same source of the gas, and each inlet channel all is equipped with the different constant throttling orifice plate 4 in aperture with the porch that nozzle core 7 joins, in order to the air flow rate of control supply.In the present embodiment aperture of the above-mentioned orifice plate 4 of each floating ball device successively (from left to right) be 0.5 millimeter, 0.4 millimeter, 0.3 millimeter.Each floating ball device all has the out splice going splice 6 of oneself as can be seen from Figure 2, and each communicates with an air-capacitor 2.Air-capacitor 2 is 150 millimeters * 80 millimeters * 60 millimeters cuboid container, links to each other with pipeline board 3 by pipeline, cooperates with the constant throttling orifice plate of each floating ball device, produces damping action, can eliminate the vibration of output signal.
From figure, also can find out, the inlet channel porch in each nozzle core, and all there are 5 sealings of " O " type circle the joint of output gas circuit.Nozzle 10 cooperates closely by mechanical wringing fit and bonding agent with the nozzle core and links together; Form throttling therebetween and chew 11.Form air chamber A between described nozzle, nozzle core and the ball float 12, described throttling is chewed air chamber A and out splice going splice 6 is coupled together.Ball float 12 is the steel ball with high precision of 11.506 millimeters of diameters.
Three floating ball devices are equipped with the weight counterweight of Different Weight respectively.Among the figure from left to right the external diameter of three counterweights be 60 millimeters, internal diameter is 26 millimeters, but height then is respectively 55 millimeters, 27 millimeters and 5.5 millimeters, cooperate with the throttle diameter of aforementioned each constant throttling orifice plate that installs, provide the normal pressure signal of 0.097 MPa, 0.055 MPa and 0.01 MPa respectively.
The bottom integrated of the multi-channel standard pressure signal generator of present embodiment is supported by three screw rods 1.These screw rods also have the effect of regulating 3 one-tenth levels of pipeline board concurrently.
The above-mentioned standard signal that utilizes the device of present embodiment to provide can be implemented zero point, range and nonlinear correction to the pneumatic gage of measurement range 0 to 0.1 MPa.Can provide self-tuning standard signal for intelligence instrument especially.
Claims (9)
1, a kind of multi-channel standard pressure signal generator comprises a plurality of floating ball devices of being made up of nozzle, nozzle core, ball float and counterweight, it is characterized in that:
-a plurality of floating ball devices are installed on the pipeline board, and their inlet channel is connected to same air supply source;
The different constant throttling orifice plate in aperture is equipped with in-each floating ball device inlet channel porch;
-each floating ball device is equipped with counterweight fixing, that quality has nothing in common with each other;
-each floating ball device has air-capacitor respectively;
-each floating ball device has output interface respectively.
2, a kind of signal generator as claimed in claim 1 is characterized in that said floating ball device is three, and they are installed on 210 millimeters * 80 millimeters the pipeline board.
3, a kind of signal generator as claimed in claim 2 is characterized in that the constant throttling orifice panel aperture that said three floating ball device inlet channel porch are provided with is followed successively by 0.5 millimeter, 0.4 millimeter, 0.3 millimeter.
4, a kind of signal generator as claimed in claim 3 is characterized in that the counterweight external diameter of said three floating ball devices configuration is 60 millimeters, and internal diameter is 26 millimeters, corresponds to 55 millimeters, 27 millimeters, 5.5 millimeters highly successively.
5, a kind of as each described signal generator of claim 2 to 4, it is characterized in that the ball float in described three floating ball devices is the steel ball of 11.506 millimeters of diameters.
6, a kind of as each described signal generator of claim 2 to 4, it is characterized in that the air-capacitor that each floating ball device is joined is 150 millimeters * 80 millimeters * 60 millimeters cuboid container.
7, a kind of as each described signal generator of claim 2 to 4, it is characterized in that three studdles are equipped with in the bottom of this generator.
8, a kind of signal generator as claimed in claim 5 is characterized in that three studdles are equipped with in the bottom of this generator.
9, a kind of signal generator as claimed in claim 6 is characterized in that three studdles are equipped with in the bottom of this generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93116747 CN1083924A (en) | 1993-09-01 | 1993-09-01 | Multi-channel standard pressure signal generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93116747 CN1083924A (en) | 1993-09-01 | 1993-09-01 | Multi-channel standard pressure signal generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1083924A true CN1083924A (en) | 1994-03-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93116747 Pending CN1083924A (en) | 1993-09-01 | 1993-09-01 | Multi-channel standard pressure signal generator |
Country Status (1)
| Country | Link |
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| CN (1) | CN1083924A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102971613A (en) * | 2010-06-28 | 2013-03-13 | Ta海德罗尼克斯有限责任公司 | Valve assembly for a differential pressure sensor with automatic zero point calibration and flushing |
-
1993
- 1993-09-01 CN CN 93116747 patent/CN1083924A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102971613A (en) * | 2010-06-28 | 2013-03-13 | Ta海德罗尼克斯有限责任公司 | Valve assembly for a differential pressure sensor with automatic zero point calibration and flushing |
| CN102971613B (en) * | 2010-06-28 | 2014-09-24 | Ta海德罗尼克斯有限责任公司 | Valve assembly for a differential pressure sensor with automatic zero point calibration and flushing |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |