CN102427333A - Preamplifier of electrode - Google Patents
Preamplifier of electrode Download PDFInfo
- Publication number
- CN102427333A CN102427333A CN2011103262248A CN201110326224A CN102427333A CN 102427333 A CN102427333 A CN 102427333A CN 2011103262248 A CN2011103262248 A CN 2011103262248A CN 201110326224 A CN201110326224 A CN 201110326224A CN 102427333 A CN102427333 A CN 102427333A
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- circuit board
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- electrode
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Abstract
The invention discloses a preamplifier of an electrode. The preamplifier comprises cables, a signal conversion device and a shell. The front amplifier is characterized in that a cable end sealing cap (07), a circuit board installing tube (10) and a signal sealing cap (20) are connected in sequence, the signal conversion device is a circuit board (11) and is installed in the circuit board installing tube (10), a multi-core cable (03) passes through the cable end sealing cap (07) to be connected with one end of the circuit board (11), and a signal transmission cable (22) passes through the signal end sealing cap (20) to be connected with the other end of the circuit board (11). The preamplifier has good sealing and insulating performances and a simple structure, is convenient to install and maintain and can be used for greatly reducing the cost of transmission cables and increasing signal transmission distance.
Description
Technical field
The present invention relates to a kind of signal transmitting device, particularly a kind of electrode preamplifier.
Background technology
At present, carrying out with the solution of electrode pair raw material and product that the pH value detects and control, is the method comparatively accurately of generally acknowledging, the online automatic detection of pH value has been become indispensable technology measure in the modern production with monitoring.When electrode through the measured acid-base solution of electrolysis, can measure the conductivity size of this solution, thereby learn the height of its acid base concentration.Therefore, the electrode preamplifier is being born the effect of amplifying electrical conductivity of solution signal to controller.Because amplifier is placed on sour pond or outdoor usually; The signal of electrode transmission simultaneously is the high resistant signal; This just requires electrode preamplifier sealing and insulating properties to get well; Could guarantee that like this amplifier inner member is not impaired, guarantee simultaneously in the element in the transmission amplifier that the high resistant signal can be complete.
Aspect amplifier and cable seal equipment, we have retrieved following open source literatures, but some use limitation of all corresponding existence.For example:
1. Chinese patent, notification number: CN201051578Y, title: cable seal fixing head; Comprise clamping ring, clamp jaw, urgent head and be with externally threaded body; Said clamping ring supports and is located in the externally threaded through hole of said body, and said clamp jaw entangles on the said clamping ring, and said urgent head screws respectively on said external screw thread; Said body designs for one with female seat or public base connector, and said body is an one with connector.In female base connector, be provided with female end electronics splicing ear, it and cable join, and in public seat device, are provided with public end electric connection terminal, and it is connected with cable.The public end of the body of this cable seal fixing head and connector and/or female end are connected as a single entity, and not only structure is more simple, and water resistance is better.
2. Chinese patent; Notification number: CN101552463; Title: the current protective device of preamplifier, constitute by precision resistance, three terminal regulator, preamplifier, optocoupler, centre-tapped resistance, electric capacity and power supply, power supply is connected a precision resistance to three terminal regulator; The output of three terminal regulator connects preamplifier; Optocoupler of precision resistance parallel connection, triode output-parallel one centre-tapped resistance and a capacity earth of optocoupler, wherein the tap of centre-tapped resistance connects the earth terminal of three terminal regulator.This invention beneficial effect is: the protective device in the circuit can in time reduce supply power voltage automatically, and short circuit is more serious, and step-down significantly.
3. Chinese patent; Notification number: CN2766300; Title: a kind of signal amplifier; Comprise signal input amplifier, double-channel analog/digital transducer, microprocessor MCU, digital to analog converter and signal output Shaping circuit; Signal of telecommunication output after each part mentioned above is handled successively, wherein the output port of microprocessor MCU also connects the interior ring negative feedback loop of checkout terminal formation of double-channel analog/digital transducer, and the input that the shaping output of signal output Shaping circuit inserts one of them passage on the double-channel analog/digital transducer constitutes outer ring negative feedback loop.The utility model can make input/output signal realize regulating automatically, and the system temperature drift is little; Automatically compensation in real time, nonlinear distortion is little; Improve the data acquisition precision, reach control precision preferably; Circuit structure is simple in addition, and cost is low, is easy to realize, makes product reach high cost performance.
Yet I find that also there are some defectives in above-mentioned disclosed document, and for example the Seal of Cables effect is not enough, and water joint gets rusty easily, and the amplifier insulation measures is perfect inadequately etc.Simultaneously, the inventor finds that also there is following defective in present amplidyne generator: 1, because the signal of electrode pH value measurement mechanism through cable transmission is the high resistant signal, therefore, for the insulating requirements of electrode preamplifier be >=12 power ohms of 10.Traditional electrode preamplifier is difficult to the requirement that reaches such, therefore, adopts high resistant cable connection electrode pH value measurement mechanism and electrode preamplifier to satisfy the transmission requirement of the high signal of telecommunication more.But along with the length of cable is long more, the resistance limits that cable self causes is big more, and the length that connects two high resistant cables between the equipment usually is 20 meters at most, and this has just limited laying of a whole set of measuring equipment virtually.2, because amplifier is placed on sour pool side or outdoor usually, and traditional electrode preamplifier sealing is poor, so the influence that the precision element in the amplifier is easy to receive rainwater or acid solution is from causing equipment failure.
Summary of the invention
The technical scheme that the present invention will solve provides a kind of electrode preamplifier; Can overcome expensive, cable connection length limited that above-mentioned amplifier exists; Problems such as the amplifier insulating properties is bad, the low cost of realization electrode preamplifier, high efficiency purpose.
The electrode preamplifier comprises cable, chromacoder and housing, and cable is a signal-transmitting cable or/and multicore cable, and cut cable seal cover, circuit board mounting pipe and signal seal cover are connected successively; Chromacoder is a circuit board, is installed on the inside of circuit board mounting pipe, and multicore cable passes the cut cable seal cover and is connected with circuit board one end; Signal-transmitting cable passes the signal end seal cover and is connected with the other end of circuit board.
Above-described cut cable seal cover is provided with cable seal circle, cut cable top tube; Multicore cable is penetrated by cut cable seal cover through hole; Through mounted cut cable sliding shim, cut cable sealing ring and cut cable top tube, cut cable seal cover inner space and extraneous complete closed.
Above-described circuit board mounting pipe is provided with signal end joint base in the end, signal end insulation tank jump ring is arranged in the signal end joint base, prevents the displacement of signal end insulation tank.
Above-described circuit board is welded with the logical pad of holding wire, and welds together with signal end joint base.The through hole and the groove that are consistent with holding wire conducting mat type shape are arranged in the signal end insulation tank, and the holding wire conducting mat is pressed onto on the signal end insulation tank through interference fit.
Above-described circuit board mounting pipe is provided with signal top tube, signal sealing ring, line ball nut, signal end compressing tablet and shielding conductor pressure pad and is arranged in the line ball nut; The screw thread that cooperatively interacts is stamped in signal end top tube and signal end sealing; There is mounting groove to place signal end sliding shim and signal end sealing ring in the signal end seal cover; After signal-transmitting cable passes the circuit board mounting pipe; When signal end top tube was torqued in the signal end seal cover, signal end sliding shim and signal end sealing ring also entered in the mounting groove of signal end seal cover, the inner space of circuit board mounting pipe and extraneous sealed insulation.
Core lead on the above-described multicore cable and circuit board connected mode are welding; Card wire clamp screw and card wire clamp are fixed cable and circuit board, and the card wire clamp is to prevent that cut cable seal cover and cut cable sealing ring from driving the multicore cable rotation and drawing the pad on the bad multicore cable when rotating in this effect.
The above-described logical pad of holding wire, signal end joint base and the line ball nut of being welded with all can conduct electricity, and the signal end cable screening wire just can be received in the board circuit through these electric conductors like this.
Substantive distinguishing features and obvious improvement that the present invention gives prominence to are:
1, in original technology, must adopt the high resistant cable to carry out signal between electrode and amplifier and transmit,, can the high resistant cable be changed to common signal-transmitting cable if adopt electrode amplifier of the present invention.
2, the high resistant cable length of original technology is 20 meters at most, adopt technology of the present invention can use common cable to replace the high resistant cable, and cable length can reach 100 meters.
3, the present invention is arranged on electronic component in three different housings respectively, has adopted the thread seal connection between the housing, makes like this enclosure interior element and extraneous sealed insulation when having protected element, to make that also the repair and replacement element is more convenient.
Description of drawings
Fig. 1 is an electrode preamplifier general assembly drawing of the present invention.
Fig. 2 is the structural representation that the signal seal cover is installed.
Fig. 3 is the structural representation of signal end joint base and line ball screw thread.
The parts table of comparisons among the figure:
01, card wire clamp screw 02, cut cable sliding shim
03, multicore cable 04, cut cable sealing ring
05, card wire clamp 06, cut cable top tube
07, cut cable seal cover 08, cut cable sealing gasket
09, cut cable snap ring 10, circuit board mounting pipe
11, circuit board 12, sealed insulation packing material
13, signal end insulation tank 14, signal end insulation tank jump ring
15, holding wire conducting mat 16, signal end joint base
17, signal end compressing tablet 18, signal end snap ring
19, signal end sealing gasket 20, signal end seal cover
21, signal end top tube 22, signal-transmitting cable
23, signal end sliding shim 24, signal end sealing ring
25, signal end cable screening wire 26, line ball nut
27, shielding conductor pressure pad 28, top line post jump ring
29, top line post 30, shielding conductor and holding wire insulating barrier
31, holding wire
Embodiment
As shown in Figure 1; Electrode preamplifier of the present invention; Comprise multicore cable 03 and cut cable seal cover 07: multicore cable 03 is penetrated by cut cable seal cover 07 through hole, through mounted cut cable sliding shim 02, cut cable sealing ring 04 and cut cable top tube 06, cuts open the insulated hull of multicore cable 03 outer layer insulation crust and each core; Earlier with each core wire bonds to the pad of circuit board 11 appointments; Be fixed on the assigned address of circuit board with card wire clamp screw 01 and card wire clamp 05, card wire clamp 05 is when preventing that cut cable seal cover 07 from rotating with cut cable sealing ring 04, to turn to the pad on the multicore cable 03 with multicore cable 03 in this effect again.Cut cable seal cover 07 is turned round on the thread of circuit board mounting pipe 10; Cut cable top tube 06 just can be expressed to cut cable sealing gasket 08 and cut cable sealing ring 04; 04 distortion of cut cable sealing ring; And engage with multicore cable 03 intimate, can keep the inner space and the outside sealed insulation of cut cable sealing gasket 08 tube 06 like this to the cut cable top.
Like Fig. 2; Shown in 3; Signal-transmitting cable 22 is penetrated by signal end seal cover 20 through holes; Through mounted signal end sliding shim 23, signal end sealing ring 24 and signal end top tube 21; Again signal-transmitting cable 22 is cutd open insulation sheath and semiconductor layer, penetrate into then in mounted signal end compressing tablet 17, shielding conductor pressure pad 27, top line post 29 and the line ball nut 26, the signal end cable screening wire 25 of signal-transmitting cable 22 is stuck in the space between shielding conductor pressure pad 27 and the line ball nut 26; And the shielding conductor and the holding wire insulating barrier 30 that make signal-transmitting cable 22 pass the through hole in the middle of signal end compressing tablet 17, shielding conductor pressure pad 27, the top line post 29; Cut open again and stretch out signal end compressing tablet 17 outer unnecessary shielding conductor and holding wire insulating barriers 30, and keep the holding wire 31 of appropriate length, signal end cable screening wire 25 is pressed between shielding conductor pressure pad 27 and the line ball nut 26; Holding wire 31 is pressed between holding wire conducting mat 15 and the signal end compressing tablet 17; Holding wire conducting mat 15 is the metallic conduction material, is welded to circuit board 11 through plain conductor and specifies on the pads, and holding wire 31 is just in the connection circuit plate circuit like this.Signal end joint base 16 also is the metallic conduction material with line ball nut 26; And signal end joint base 16 is welded on 11 liang of bifurcated pin of circuit board; With the specified circuit conducting of circuit board, signal end cable screening wire 25 is just in the connection circuit plate circuit like this on 11 liang of bifurcated pin of circuit board.
Signal end seal cover 20 is turned round on the thread of circuit board mounting pipe 10; Signal end top tube 21 just can be expressed to signal end sealing gasket 19 and signal end sealing ring 24; 24 distortion of signal end sealing ring engage with signal-transmitting cable 22 intimate, enable the inner space and the space outerpace sealed insulation of inhibit signal end sealing gasket 19 tube 21 to the signal end top like this.
Among the present invention; The through hole and the groove that are consistent with holding wire conducting mat 15 type shapes are arranged in the signal end insulation tank 13; Holding wire conducting mat 15 is pressed onto on the signal end insulation tank 13 through interference fit;, again signal end insulation tank jump ring 14 is installed in the signal end joint base 16 bottom jump ring grooves after being pressed into signal end joint base 16 bottoms on holding wire conducting mat 15 and the signal end insulation tank 13 through interference fit, prevents 13 displacements of signal end insulation tank.
In invention, signal end sealing gasket 19 is installed on the draw-in groove of signal end snap ring 18, signal end snap ring 18 through sealed insulation packing material 12 and glue fixing at circuit board mounting pipe 10 1 ends.The draw-in groove of signal end snap ring 18 plays signal end sealing gasket 19 effect of dropping when preventing to turn on signal end seal cover 20; Cut cable sealing gasket 08 is installed on the draw-in groove of cut cable snap ring 09, cut cable snap ring 09 through sealed insulation packing material 12 and glue fixing at circuit board mounting pipe 10 other ends.The draw-in groove of cut cable snap ring 09 plays cut cable sealing gasket 08 effect of dropping when preventing to turn on cut cable seal cover 07.
Among the present invention; When being torqued into circuit board mounting pipe 10, cut cable seal cover 07 can make 04 distortion of cut cable sealing ring; Cut cable sealing ring 04 closely contacts with the outer surface of multicore cable 03 and the mounting groove of cut cable sealing gasket 08, when cut cable seal cover 07 rotates, just can be with multicore cable 03 to rotate together, and cut cable sliding shim 02 has played when cut cable seal cover 07 rotates; Cut cable sealing ring 04 separates with cut cable seal cover 07, does not rotate with cut cable seal cover 07.Signal end sliding shim 23 is identical with the effect that cut cable seal cover 07 is played.
The electrode preamplifier course of work of the present invention is following:
The signal-transmitting cable 22 of connection electrode pH value checkout gear is penetrated from the hole on the signal seal cover 20, insert in the amplifier; Multicore cable 03 1 ends are connected other end access controller with circuit board 11 in the amplifier.Electrode imports signal in the electrode signal circuit board 11 through signal-transmitting cable 22, and circuit board 11 imports signal into controller from multicore cable 03 through amplifying, and promptly demonstrates the data of electrode measurement solution on the controller.
Claims (7)
1. electrode preamplifier; Comprise cable, chromacoder and housing; It is characterized in that: described cable is a signal-transmitting cable or/and multicore cable, and described cut cable seal cover (07), circuit board mounting pipe (10) and signal seal cover (20) are connected successively; Chromacoder is circuit board (11), is installed on the inside of circuit board mounting pipe (10), and multicore cable (03) passes cut cable seal cover (07) and is connected with circuit board (11) one ends; Signal-transmitting cable (22) passes signal end seal cover (20) and is connected with the other end of circuit board (11).
2. electrode preamplifier according to claim 1 is characterized in that: described cut cable seal cover (07) is provided with cable seal circle (04) and cut cable top tube (06).
3. electrode preamplifier according to claim 1 is characterized in that: described circuit board mounting pipe (10) is provided with signal end joint base (16) in the end, and signal end insulation tank jump ring (14) is arranged in the signal end joint base (16).
4. signal electrode preamplifier according to claim 1 is characterized in that: described circuit board (11) is welded with the logical pad of holding wire (15), and welds together with signal end joint base (16).
5. electrode preamplifier according to claim 1; It is characterized in that: described circuit board mounting pipe (20) is provided with signal top top tube (21), signal sealing ring (24) and line ball nut (26), and signal end compressing tablet (17) and shielding conductor pressure pad (27) are arranged in the line ball nut (26).
6. electrode preamplifier according to claim 1 is characterized in that: core lead on the described multicore cable (03) and circuit board (11) connected mode are welding, and cable and circuit board (11) are fixing with card wire clamp screw (01) and card wire clamp (05).
7. according to the described electrode preamplifier of claim 1～6, it is characterized in that: the described logical pad of holding wire (15), signal end joint base (16) and the line ball nut (26) of being welded with all can conduct electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103262248A CN102427333A (en) | 2011-10-25 | 2011-10-25 | Preamplifier of electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103262248A CN102427333A (en) | 2011-10-25 | 2011-10-25 | Preamplifier of electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102427333A true CN102427333A (en) | 2012-04-25 |
Family
ID=45961283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103262248A Pending CN102427333A (en) | 2011-10-25 | 2011-10-25 | Preamplifier of electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102427333A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104080267A (en) * | 2014-06-27 | 2014-10-01 | 杨海蓉 | Circuit board gasket |
| CN110856091A (en) * | 2019-11-27 | 2020-02-28 | 湖南声仪测控科技有限责任公司 | Preamplifier for sound level meter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2495046Y (en) * | 2001-08-10 | 2002-06-12 | 北京义顺德商社 | Electric cable steel pipe joint box |
| CN2595037Y (en) * | 2002-12-20 | 2003-12-24 | 西安石油勘探仪器总厂 | Sealed wire connector |
| CN102103922A (en) * | 2009-12-18 | 2011-06-22 | 上海瑞奇电气设备有限公司 | Improved high-voltage cable connector for underground transformer |
-
2011
- 2011-10-25 CN CN2011103262248A patent/CN102427333A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2495046Y (en) * | 2001-08-10 | 2002-06-12 | 北京义顺德商社 | Electric cable steel pipe joint box |
| CN2595037Y (en) * | 2002-12-20 | 2003-12-24 | 西安石油勘探仪器总厂 | Sealed wire connector |
| CN102103922A (en) * | 2009-12-18 | 2011-06-22 | 上海瑞奇电气设备有限公司 | Improved high-voltage cable connector for underground transformer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104080267A (en) * | 2014-06-27 | 2014-10-01 | 杨海蓉 | Circuit board gasket |
| CN110856091A (en) * | 2019-11-27 | 2020-02-28 | 湖南声仪测控科技有限责任公司 | Preamplifier for sound level meter |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20151216 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |