CN201233838Y - Electronic pressure switch - Google Patents
Electronic pressure switch Download PDFInfo
- Publication number
- CN201233838Y CN201233838Y CNU200820109266XU CN200820109266U CN201233838Y CN 201233838 Y CN201233838 Y CN 201233838Y CN U200820109266X U CNU200820109266X U CN U200820109266XU CN 200820109266 U CN200820109266 U CN 200820109266U CN 201233838 Y CN201233838 Y CN 201233838Y
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- China
- Prior art keywords
- pressure
- bourdon tube
- pointer
- lower limit
- pressure gauge
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an electronic pressure switch, which comprises a bourdon tube pressure gauge and a pressure limiting device connected in the bourdon tube pressure gauge. The pressure limiting device is used for controlling the closing of the electronic pressure switch and comprises a pressure-regulating device and a control device; the pressure indication is carried out by adopting the bourdon tube pressure gauge with stable performance; and the pressure-regulating device for regulating an upper limit pressure and a lower limit pressure at any moment is combined with the controlling device for acquiring and processing an upper limit signal and a lower limit signal. Therefore, the upper limit pressure and the lower limit pressure are conveniently regulated, the indication is intuitive, the sensitivity and the precision of a photoelectric sensor are high, the reliability of the product is good, and the service life is long. The utility model has the advantages of simple operation, and safe and reliable use, can regulate the upper limit pressure and the lower limit pressure at the moment in the working status, and be widely suitable for various pneumatic or hydraulic pipeline environments.
Description
Technical field
The utility model relates to the electron pressure switch under a kind of hydraulic pressure or the air pressure control.
Background technology
Existing pressure switch is divided into two kinds of electronic type and mechanical types, wherein electronic pressure switch has advantages such as precision height, life-span length, but cost is higher, complex circuit, most of electronic pressure switch output power controlling is too small, can not directly drive hundreds of and even last kilowatt equipment, must add power amplification circuit, so existing electronic pressure switch is difficult in application in the low-cost and simple control occasion.The mechanical compression construction of switch is simple, cost is low, but shortcoming such as the life-span is short, and precision is not high, and control range is little.How to overcome this two kinds of shortcomings that pressure switch comes out in actual use, producing a kind of more reasonable structure, using pressure switch more convenient, highly versatile is problem to be solved in the utility model.
Summary of the invention
In view of above-mentioned deficiency of the prior art, the utility model aim to provide a kind of applied widely, cost is low, precision is high, the electron pressure switch of long service life.
The utility model is achieved through the following technical solutions:
A kind of electron pressure switch comprises bourdon tube pressure gauge, also is provided with a pressure limiting device in bourdon tube pressure gauge, and pressure limiting device is by the closure of the control of the pointer on bourdon tube pressure gauge electron pressure switch.
Described pressure limiting device comprises pressure-regulating device and control device, and pressure-regulating device is located at bourdon tube pressure gauge watch core top, and control device is connected with bourdon tube pressure gauge with pressure-regulating device respectively.
Described pressure-regulating device comprises adjusting knob, upper limit pointer, lower limit pointer and support, described adjusting knob comprises knob body, spring and driving lever, the knob body is located on the transparent shell of bourdon tube pressure gauge, spring is between knob body and transparent shell, and driving lever is positioned at transparent shell and is connected with knob body bottom; Described support is fixed in the housing; Described upper limit pointer and lower limit pointer are between bourdon tube pressure gauge pointer and driving lever, and upper limit pointer and lower limit pointer are provided with pin, and upper limit pointer and lower limit pointer one end are connected on the support by rotating shaft.
The power transmission shaft of described knob body, rotating shaft and bourdon tube pressure gauge pointer is on same axial line.
Described control device comprises two transducers, two guide vane end stops and a relay-operated controller, two transducers are connected on the bottom surface of upper limit pointer and lower limit pointer, two guide vane end stops are fixed on the pointer end face, relay-operated controller is fixed in the housing of bourdon tube pressure gauge watch core below, and relay-operated controller is connected with two transducers by lead.
Described relay-operated controller is fixed in the interior airtight independent cavity of bourdon tube pressure gauge watch core below housing.
Described transducer is the flute profile photoelectric sensor, and guide vane end stop is the arc light barrier.
The utility model adopts the bourdon tube pressure gauge of stable performance to do the pressure indication, in conjunction with the pressure-regulating device that can adjust upper and lower limit pressure at any time and the control device that carries out the upper and lower limit signal acquisition process, make that upper and lower limit pressure is easy to adjust, indication is directly perceived, photoelectric sensor sensibility and accuracy height, product reliability is good, long service life.The output of employing relay switch can be designed to the output of many group switching values as required, and the equipment that drives 2 kilowatts need not applied power amplify, and cost is lower.Relay-operated controller is installed in the interior airtight independent cavity of housing, and having avoided the pressure indicating section to produce water vapour or make moist influences electronic circuit.Total is simple to operate, safe in utilization, has the advantage of adjusting upper and lower limit pressure in working order down at any time.
Description of drawings
Fig. 1 is a structure cutaway view of the present utility model;
Fig. 2 is a vertical view of the present utility model;
Fig. 3 is the electrical block diagram of the utility model repeat circuit controller.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described:
As shown in Figure 1 and Figure 2, a kind of electron pressure switch described in the utility model comprises bourdon tube pressure gauge and the pressure limiting device of being located in the bourdon tube pressure gauge.Pressure limiting device comprises pressure-regulating device and control device, pressure-regulating device comprises adjusting knob, upper limit pointer 17, lower limit pointer 14 and support 5 again, adjusting knob comprises knob body 9, spring and driving lever 12, the transparent shell 6 of bourdon tube pressure gauge is provided with opening, knob body 9 is stuck on the opening and can rotates on transparent shell 6, spring is between knob body 9 and opening, after knob body 9 passes transparent shell 6, driving lever 12 is connected knob body 9 bottoms in the transparent shell 6, and driving lever 12 is the body of rod of a level.Support 5 is fixed in the housing, upper limit pointer 17 and lower limit pointer 14 1 ends are connected on the support 5 by rotating shaft, upper limit pointer 17 and lower limit pointer 14 are between bourdon tube pressure gauge pointer 7 and driving lever 12, and be positioned at the both sides of driving lever 12, also be fixed with pin 13 on upper limit pointer 17 and lower limit pointer 14, driving lever 12 is stirred pin 13 drive upper limit pointers 17 or lower limit pointer 14 rotates on support 5.The power transmission shaft of knob body 9, rotating shaft and bourdon tube pressure gauge pointer 7 is convenient to adjust and the relative position of 7 on upper control limit pointer 17 and lower limit pointer 14 and pointer on same axial line like this.Control device comprises two flute profile photoelectric sensors, two arc light barriers and a relay-operated controller 1, two flute profile photoelectric sensors are respectively upper limit flute profile photoelectric sensor 11 and lower limit flute profile photoelectric sensor 8, two transducer correspondences are connected on the bottom surface of upper limit pointer 17 and lower limit pointer 14, two arc light barriers are respectively upper limit arc light barrier 15 and lower limit arc light barrier 10, two arc light barriers are separately fixed on the end face of pointer 7, upper limit arc light barrier 15 is corresponding with the position of upper limit flute profile photoelectric sensor 11 and lower limit flute profile photoelectric sensor 8 respectively with lower limit arc light barrier 10, also be provided with an airtight independent cavity 16 in the housing below bourdon tube pressure gauge watch core 4, relay-operated controller 1 is fixed in this independent cavity 16, relay-operated controller 1 is connected with two flute profile photoelectric sensors respectively by lead 2, and the porch that lead 2 enters independent cavity 16 seals with fluid sealant.
During use, as shown in Figure 1 and Figure 2, adjust the Pressure gauge numerical value of upper and lower limit pointer 17,14 indications at first as required.Push-turn key body 9, spring between knob body 9 and transparent shell 6 openings deforms, knob body 9 drives driving lever 12 and moves down, make driving lever 12 sides to contact with pin 13 sides on upper limit pointer 17 or the lower limit pointer 14, turning knob body 9 drives upper limit pointer 17 and rotates on support 5, and the numerical value of upper limit pointer 17 appointments is the maximum pressure that electron pressure switch can bear.Then adjust lower limit pointer 14, lower limit pointer 14 is rotated on the position of required minimum pressure values, unclamp knob body 9, knob body 9 pops up under the reaction force of spring, and driving lever 12 disengagings contact with pin 13 sides.When pressure enters into bourdon tube pressure gauge watch core 4 by interface 3, pressure makes the diaphragm deformation in the watch core 4, amplifying drive pointer 7 by gear shift rotates along clockwise direction, during pointer 7 process lower limit pointers 14, lower limit arc light barrier 10 blocks the lower limit flute profile photoelectric sensor 8 that is connected on the lower limit pointer 14, relay-operated controller 1 receives from behind the high level signal on the lower limit flute profile photoelectric sensor 8, relay-operated controller 1 conducting.Increase along with pressure, pointer 7 continues to rotate up along clockwise direction, when arriving upper limit pointer 17, the corresponding upper limit arc light barrier 15 that is fixed on the pointer 7 blocks the upper limit flute profile photoelectric sensor 11 that is connected on upper limit pointer 17 bottom surfaces, as shown in Figure 3, upper limit flute profile photoelectric sensor 11 sends the normal phase input end of high level signal comparator 21 in the IC1 comparator circuit, the output of comparator 21 also is a high level, because of comparator 21 outputs connect by the normal phase input end of resistance R 12 with latching circuit 23, the input just in opposite directions of latching circuit 23 is a high level, latching circuit 23 enters self-locking state, latching circuit 23 outputs also are high level, because latching circuit 23 outputs connect with the inverting input of comparator 24, the inverting input of comparator 24 is a high level, comparator 24 outputs are low level, comparator 24 outputs connect by the base stage of resistance R 17 with triode 20, the base stage of triode 20 is a low level, triode 20 ends, the relay coil dead electricity disconnects, pressure no longer continues to rise in the pipeline, has guaranteed that pressure maintains in the scope of a safety all the time.When pressure continues to reduce, as shown in Figure 2, after lower limit arc light barrier 10 on the pointer 7 enters into lower limit flute profile photoelectric sensor 8 on lower limit pointer 14 bottom surfaces once more, as shown in Figure 3, the normal phase input end of lower limit flute profile photoelectric sensor 8 output high level comparator 22 in the IC1 comparator circuit, when comparator 22 normal phase input ends are high level, output also is a high level, because of comparator 22 outputs connect by the inverting input of resistance R 11 with latching circuit 23, the inverting input of latching circuit 23 is a high level, so latching circuit 23 is removed self-locking state, latching circuit 23 outputs are low level, and the inverting input of comparator 24 also is a low level, and comparator 24 outputs are high level, make triode 20 conductings, the relay coil energising is closed.Pressure begins to rise in the pipeline, and reciprocation cycle is finished the pressure adjustment process automatically like this.Certainly, in use, also can adjust the position of upper limit pointer and lower limit pointer indication as required at any time by driving lever, so also can not influence electron pressure switch just in use.
Claims (7)
1, a kind of electron pressure switch comprises bourdon tube pressure gauge, it is characterized in that, also is provided with a pressure limiting device in bourdon tube pressure gauge, and pressure limiting device is by the closure of the control of the pointer on bourdon tube pressure gauge electron pressure switch.
2, electron pressure switch according to claim 1, it is characterized in that, described pressure limiting device comprises pressure-regulating device and control device, and described pressure-regulating device is located at bourdon tube pressure gauge watch core top, and control device is connected with bourdon tube pressure gauge with pressure-regulating device respectively.
3, electron pressure switch according to claim 2, it is characterized in that, described pressure-regulating device comprises adjusting knob, upper limit pointer, lower limit pointer and support, described adjusting knob comprises knob body, spring and driving lever, the knob body is located on the transparent shell of bourdon tube pressure gauge, spring is between knob body and transparent shell, and driving lever is positioned at transparent shell and is connected with knob body bottom; Described support is fixed in the housing; Described upper limit pointer and lower limit pointer are between bourdon tube pressure gauge pointer and driving lever, and upper limit pointer and lower limit pointer are provided with pin, and upper limit pointer and lower limit pointer one end are connected on the support by rotating shaft.
4, electron pressure switch according to claim 3 is characterized in that, the power transmission shaft of described knob body, rotating shaft and bourdon tube pressure gauge pointer is on same axial line.
5, electron pressure switch according to claim 2, it is characterized in that, described control device comprises two transducers, two guide vane end stops and a relay-operated controller, two transducers are connected on the bottom surface of upper limit pointer and lower limit pointer, two guide vane end stops are fixed on the pointer end face, relay-operated controller is fixed in the housing of bourdon tube pressure gauge watch core below, and relay-operated controller is connected with two transducers by lead.
6, electron pressure switch according to claim 5 is characterized in that, described relay-operated controller is fixed in the interior airtight independent cavity of bourdon tube pressure gauge watch core below housing.
According to claim 5 or 6 described electron pressure switchs, it is characterized in that 7, described transducer is the flute profile photoelectric sensor, guide vane end stop is the arc light barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820109266XU CN201233838Y (en) | 2008-07-16 | 2008-07-16 | Electronic pressure switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820109266XU CN201233838Y (en) | 2008-07-16 | 2008-07-16 | Electronic pressure switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201233838Y true CN201233838Y (en) | 2009-05-06 |
Family
ID=40620225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820109266XU Expired - Fee Related CN201233838Y (en) | 2008-07-16 | 2008-07-16 | Electronic pressure switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201233838Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812409A (en) * | 2017-11-18 | 2019-05-28 | 马燕翔 | A kind of air pressure control mechanism and vacuum pump and air compressor machine with the mechanism |
| CN112484917A (en) * | 2020-11-26 | 2021-03-12 | 西安航天计量测试研究所 | System and method for calibrating switching difference of electric contact pressure gauge |
-
2008
- 2008-07-16 CN CNU200820109266XU patent/CN201233838Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812409A (en) * | 2017-11-18 | 2019-05-28 | 马燕翔 | A kind of air pressure control mechanism and vacuum pump and air compressor machine with the mechanism |
| CN112484917A (en) * | 2020-11-26 | 2021-03-12 | 西安航天计量测试研究所 | System and method for calibrating switching difference of electric contact 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: 20090506 Termination date: 20130716 |