CN104111472A - Dehumidification sealing device for mounting seismograph - Google Patents
Dehumidification sealing device for mounting seismograph Download PDFInfo
- Publication number
- CN104111472A CN104111472A CN201410359858.7A CN201410359858A CN104111472A CN 104111472 A CN104111472 A CN 104111472A CN 201410359858 A CN201410359858 A CN 201410359858A CN 104111472 A CN104111472 A CN 104111472A
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- China
- Prior art keywords
- base plate
- seismographic
- packoff
- dehumidifying
- seismograph
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- 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.)
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Links
- 238000007789 sealing Methods 0.000 title abstract description 24
- 238000007791 dehumidification Methods 0.000 title abstract 4
- 238000012544 monitoring process Methods 0.000 abstract description 25
- 230000000694 effects Effects 0.000 abstract description 15
- 238000001035 drying Methods 0.000 abstract description 8
- 239000000758 substrate Substances 0.000 abstract 4
- 230000001681 protective effect Effects 0.000 description 25
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 22
- 239000004065 semiconductor Substances 0.000 description 8
- 238000000605 extraction Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 6
- 239000011521 glass Substances 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 229940099259 vaseline Drugs 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Geophysics And Detection Of Objects (AREA)
- Drying Of Gases (AREA)
Abstract
The invention discloses a dehumidification sealing device for mounting a seismograph. The dehumidification sealing device for mounting the seismograph comprises a shield and a bottom plate which are mutually connected to form a seal cavity, the bottom plate is fixed on a monitoring foundation pier surface, a substrate is arranged in the seal cavity, and the top surface of the substrate is used for mounting the seismograph; the bottom plate is provided with a mounting hole, the bottom of the substrate passes through the mounting hole and extends out of the seal cavity to firmly connect with the monitoring foundation pier surface, a sealing device is arranged between the bottom plate and the substrate, and an electronic dehumidifying device is arranged in the seal cavity. The dehumidification sealing device for mounting the seismograph provides a dry and sealed observation environment for the seismograph observation and has advantages of good sealing effect, controllable drying degree, simple overall structure, convenience in disassembling, small damage to the seismograph in disassembling, long service life and the like.
Description
Technical field
The present invention relates to seismographic field engineering, particularly a kind of for seismographic dehumidifying packoff is installed.
Background technology
In order to control and to reduce the harm that violent earthquake brings, all kinds of seismographic application, more and more by extensively, wherein mainly comprise Observation Technology of Earthquakes and the instruments such as seismological observation, explosion monitoring, geologic examination.The wide range of seismographic work place, such as lawn, outdoor park, cavern, dam top etc., conventionally working environment is all more severe, because seismograph inside comprises the observation instrument of a lot of precisions, broadband seismograph in particular for observation earthquake, this class seismograph is all more responsive to violent temperature, humidity, air pressure, while being particularly arranged on the places such as moist cavern or outdoor research station when seismograph, may produce large humiture and change, this likely directly causes damage to these instruments.Therefore, when this class seismograph of actual installation, need to take certain measure to reduce these humitures and change, this is one of key link being directly connected to the accurate work of seismograph.
At present, general mounting means is that seismograph is fixed on to monitoring foundation pier face, monitoring foundation pier face is for seismographic installed surface is installed, then use square cloche to cover on seismograph outer for isolated extraneous air, and carry out hygroscopic desiccation internal environment at the inner chemical drier of placing of cloche, finally use the space between glass cement or vaseline sealant seal glass cover and monitoring foundation pier face.
With chemical drier, seal cavity is dehumidified, generally better in work initial stage effect, but through after a period of time, the drying effect of chemical drier obviously declines, and needs periodic replacement; Effect on moisture extraction is relevant with consumption, dehumidifies comparatively slow, and effect is unsatisfactory; Effect on moisture extraction is uncontrollable, can only judge by rule of thumb, may cause the not good seismograph that causes of effect on moisture extraction to test inaccurate problem.And while making seal glass cover with glass cement or vaseline, the seismograph of easily making dirty; While needing change or reinstall seismograph, need to remove this class sealant, in process, easily damage seismograph.
For easy disassembly, there are the personnel of correlative technology field to propose a kind of for the dehumidifying packoff of other kind of quasi-instrument is installed, the patent documentation of publication No. CN102818944A discloses a kind of device that improves power-frequency electric field strength checkout equipment accuracy, comprise the seal closure shell and the base plate that are mutually tightly connected, described base plate be provided with can installation and measuring equipment probe pedestal and can control the switching function post of checkout equipment probe, described pedestal is connected with the feeler lever of checkout equipment through base plate, and described switching function post extends to base plate external through base plate; In the annular seal space forming after described seal closure shell and base plate are tightly connected, be provided with moisture absorption silica gel.
Although the seal closure of said apparatus is easy for removal and installation, still dehumidifies with drying agent, there is effect on moisture extraction not good, dehumidifying degree is difficult to control and the not good problem of sealing effectiveness.
Summary of the invention
The invention provides a kind ofly for seismographic dehumidifying packoff is installed, simple in structure, easy accessibility, for seismograph provides humidity controlled sealed environment, effectively improves the accuracy of seismograph observation earthquake.
It is a kind of for seismographic dehumidifying packoff is installed; comprising is tightly connected mutually forms protective cover and the base plate of annular seal space; base plate is fixed on monitoring foundation pier face; in described annular seal space, be provided with end face for seismographic pedestal is installed; described base plate is provided with mounting hole; the bottom surface of described pedestal is stretched out annular seal space through mounting hole and is fixedly connected with monitoring foundation pier face, between described base plate and pedestal, is provided with packoff, and electronic dehumidifying device is installed in described annular seal space.
When the present invention uses, seismograph is fixed on pedestal, make seismograph be positioned at annular seal space, pedestal is fixedly connected with monitoring foundation pier face, the electronic dehumidifying device being arranged in annular seal space is controlled the humidity in annular seal space, humidity in annular seal space can be controlled in the optimal humidity range of seismograph, thereby effectively improve the accuracy of seismographic test; The effect on moisture extraction of electronic dehumidifying device is stable, as long as provide stable electric energy to supply with, can continuous working, and long service life, drying effect is good.
Seismograph inside comprises the observation instrument of a lot of precisions, broadband seismograph in particular for observation earthquake, and common electronic dry equipment is all generally to adopt exchange current, but while showing that through practice use exchange current is powered to electronic dry equipment, can produce larger interference to seismographic test signal, thereby affect test accuracy.Therefore, preferred, described electronic dehumidifying device is once-through type, is connected with and exchanges power supply changeover device or the direct supply that turns direct current.Can effectively improve test accuracy.
Because installation seismographic annular seal space space is little, do not need to use powerful dehydrating unit to dehumidify on a large scale again, therefore, for the cost-saving energy of saving simultaneously, preferred, described electronic dehumidifying device is semi-conductor condensation dehumidifier.Semi-conductor condensation dehumidifier has low price, and power consumption is little, simple in structure, failure rate is low, and long service life, can carry out direct current supply, machinery-free vibration, the advantage such as low noise is little.
In order to reduce the otherness of each position degree of drying in annular seal space, preferred, described electronic dehumidifying device is arranged on the top of protective cover.
For convenient, manufacture and install, reduce annular seal space vibration to seismographic impact simultaneously, preferred, described packoff is the grommet type seals being stretched on pedestal sidewall, and the edge of described mounting hole and grommet type seals recline and push against.Pedestal and base plate are separately manufactured, then by O-ring seal, sealed, due to damping and the buffering effect of O-ring seal, can, in the situation that annular seal space is subject to vibrating, greatly reduce it to seismographic impact.
In order to improve the sealing effectiveness connecting between protective cover and base plate, preferred, described protective cover is fixedly connected with by some braces that are distributed in protective cover periphery with base plate, and the junction of described protective cover and base plate is provided with the first ring washer.By sealing strip, seal, easy for removal and installation, avoided after the use of bonding agent, need to dismantle by force protective cover and base plate and produce the problem of damaging seismograph hidden danger.
In order to prevent that the moisture of monitoring foundation pier face from entering annular seal space by base plate, the degree of drying in lift-off seal chamber, preferred, between described base plate and monitoring foundation pier face, be provided with furring device to form air moisture barrier between base plate and monitoring foundation pier face.Because the moisture of bottom surface is larger, air moisture barrier is set and can effectively prevents that the moisture of monitoring foundation pier face from entering annular seal space.
In order to improve the sealing effectiveness between base plate and pedestal, preferred, described furring device is be set in pedestal periphery and be pushed against base plate and monitor the second ring washer between foundation pier face.Arranging of described the second ring washer can arrange a seal structures outward again at the packoff of pedestal and base plate, air moisture barrier being set simultaneously, further improves the sealing effectiveness of annular seal space.
In order not affect the sealing effectiveness of base plate, preferred, described base plate is fixedly connected with by some swell fixtures that are distributed in the second ring washer periphery with monitoring between foundation pier face.
Seismograph when mounted, need positioning cable line towards, for convenient location, preferred, described protective cover is cylindrical shape, the sidewall of protective cover is provided with cable-through hole, in described cable-through hole, packing washer is installed.Seismographic data or cable are through cable-through hole, and cylindrical shape barrel, than square barrel, is conducive to the direction that passes of data or cable to carry out orientation.
Beneficial effect of the present invention:
Of the present invention for seismographic dehumidifying packoff is installed, for seismograph observation provides observing environment dry, sealing, there is good sealing effect, degree of drying is controlled, and one-piece construction is simple, easy accessibility, disassembly process is little to seismographic damage, the advantages such as long service life.
Accompanying drawing explanation
Fig. 1 is the perspective view of embodiment 1.
Fig. 2 is the cross-sectional schematic of embodiment 1.
Fig. 3 is the cross-sectional schematic of embodiment 1 another angle.
Fig. 4 is the wave form varies schematic diagram of test waves when electronic dehumidifying device is used alternating current or direct current.
Embodiment
As shown in Figures 1 to 3; comprising for seismographic dehumidifying packoff is installed of the present embodiment: be mutually tightly connected and form protective cover 2 and the base plate 3 of annular seal space 1; base plate 3 is fixed on monitoring foundation pier face 4; in annular seal space 3, be provided with end face for the pedestal 6 of seismograph 5 is installed; base plate 3 is provided with mounting hole 31; the bottom surface of pedestal 6 is stretched out annular seal space 1 through mounting hole 5 and is fixedly connected with monitoring foundation pier face 4; between base plate 3 and pedestal 6, by grommet type seals 11, seal, electronic dehumidifying device 7 is installed in annular seal space 1.
Protective cover 2 is cylindrical shape, and the sidewall of protective cover 2 is provided with cable-through hole 21, and packing washer 22 is installed in cable-through hole 21.Seismographic data or cable are through cable-through hole 21, and columnar structure, is conducive to the direction that passes of data or cable to carry out orientation.
Protective cover 2 and base plate 3 are made by organic glass, have transparent outward appearance, are convenient to observe seismograph, and organic glass material is non-friable, long service life; Pedestal 6 is sheet metal, can effectively transmit the seismograph that is vibrated to of monitoring foundation pier face, adopts steel plate to make in the present embodiment.
Protective cover 2 is fixedly connected with by two braces 8 that are distributed in protective cover periphery with base plate 3; brace 8 is fixedly connected with by rivet with protective cover 2; the junction of protective cover 2 and base plate 3 is provided with the first ring washer 9, the first ring washers 9 and is pressed abd fixed between protective cover 2 and base plate 3 to realize sealing.
In the present embodiment, between base plate 3 and monitoring foundation pier face 4, be provided with the second ring washer 10, the setting of the second ring washer 10 not only forms air moisture barrier and by base plate, directly penetrates into annular seal space effectively to prevent the moisture of monitoring foundation pier face between base plate and monitoring foundation pier face, and outside the grommet type seals 11 of pedestal and base plate, a seal structures is set again, prevent that gas from entering annular seal space 1 from the gap between pedestal 6 and base plate 3, thereby further improve the sealing effectiveness of annular seal space 1, between base plate 3 and monitoring foundation pier face 4, by two swell fixtures 12 that are distributed in the second ring washer 10 peripheries, be fixedly connected with, swell fixture 12 is fixedly connected with sheet 8 through two braces 8 respectively simultaneously, base plate 3 and monitoring foundation pier face 4, effectively reduce parts, simplify installation steps.
Grommet type seals 11 is U-shaped sealing strip, and the edge of mounting hole 31 snaps in U-shaped groove, can effectively improve sealing.The first ring washer 9 and the second ring washer 10 adopt end to end the making of D type sealing strip, and D type sealing strip is hollow structure, has larger deflection, can increase sealing contact surface by extruding, improves sealing effectiveness.
The cross section of the second ring washer 10 has from inside to outside downward-sloping gradually upper surface, the angle of inclination of relative level face is between 5 °～10 °, in the present embodiment, angle of inclination is 7 °, base plate 3 presses down the second ring washer 10 in swell fixture 12 effect, due to the principle of lever, and the part that base plate 3 is positioned at the second ring washer 10 slight perk that can make progress, thereby upper surface and base plate 3 that the second ring washer 10 is tilted are more fitted, and improve sealing effectiveness.
Electronic dehumidifying device 7 is arranged on the top of protective cover 2; protective cover 2 tops offer the mounting hole coordinating with electronic dehumidifying device 7; electronic dehumidifying device 7 is fixed on the edge of mounting hole by rivet, electronic dehumidifying device 7 is provided with humidity regulation knob 71 and power interface 72.
Seismograph inside comprises the observation instrument of a lot of precisions, broadband seismograph in particular for observation earthquake, and common electronic dry equipment is all generally to adopt exchange current, but process practice and experiment draw while using exchange current to power to electronic dry equipment, can produce larger interference to seismograph, as shown in Figure 4.Therefore, in the present embodiment, electronic dehumidifying device 7 is once-through type, is connected with and exchanges power supply changeover device or the direct supply that turns direct current, and power supply changeover device is arranged on outside annular seal space, and direct supply can adopt common accumulator.
Less due to seismographic annular seal space space being installed again, do not need to use powerful dehydrating unit to dehumidify on a large scale, therefore, for the cost-saving energy of saving simultaneously, in the present embodiment, the electronic dehumidifying device 7 of once-through type is semi-conductor condensation dehumidifier, and specification is: apparent size: 200*125*50mm; Rated voltage: DC5V2A; Average power: 5W/H.
After semi-conductor condensation dehumidifier energising work, utilize semiconductor wafer temperature difference principle, when in annular seal space, humidity is higher than setting value, semiconductor wafer work, makes the interior moisture condensation of annular seal space on the white plate of collection, when humidity drops to setting value, semiconductor wafer quits work, the moisture solution collecting on white plate is frozen into the globule, through water-guiding hole, by water-absorption fiber is powerful, absorbs, and finally distributes and reaches effect on moisture extraction.Semi-conductor condensation dehumidifier has low price, and power consumption is little, simple in structure, failure rate is low, the advantage such as long service life, can carry out direct current supply, and machinery-free vibration is little to seismographic interference, and noise is little.
When the present embodiment is installed:
First pedestal 6 is fixedly bolted on monitoring foundation pier face, grommet type seals 11 is enclosed within on pedestal 6, and the second ring washer 10 is placed on monitoring foundation pier face; Then base plate 3 is sleeved on pedestal 6 by mounting hole 31 and the edge of mounting hole 31 is snapped in the U-shaped groove of grommet type seals 11, lower surface and the second ring washer 10 recline; Seismograph 5 is arranged on to the end face of pedestal 6, at the upper surface of base plate, the first ring washer 9 is installed, by being connected with base plate 3 of protective cover 2, the opening edge of protective cover 2 is along reclining with the first ring washer 9, and seismographic data line passes the cable-through hole of protective cover and seals by packing washer 22; Protective cover 2 and base plate 3 between brace 8 is installed, first by rivet, brace is fixed on protective cover, then by expansion bolt by brace 8, base plate 3 is fixed on monitoring foundation pier face 4 together, and making the firstth ring washer 9, second ring packing ring 10 compresses to realize and seals; Thereby seismograph is arranged in annular seal space, completes installation.
During use, 7 energisings of electronic dehumidifying device, according to the dry numerical value setting in advance, annular seal space is dehumidified, humidity in annular seal space is controlled within the specific limits, thereby improved seismograph test accuracy, the effect on moisture extraction of electronic dehumidifying device is stable, as long as stable electric energy is provided to be supplied with, can continuous working, long service life, drying effect is good.
In sum, the present embodiment for seismographic dehumidifying packoff is installed, for seismograph observation provides observing environment dry, sealing, have good airproof performance, degree of drying is controlled, and one-piece construction is simple, easy accessibility, disassembly process is little to seismographic infringement, the advantages such as long service life.
Claims (10)
1. one kind for installing seismographic dehumidifying packoff; comprising is tightly connected mutually forms protective cover and the base plate of annular seal space; it is characterized in that; base plate is fixed on monitoring foundation pier face; in described annular seal space, be provided with end face for seismographic pedestal is installed, described base plate is provided with mounting hole, and the bottom surface of described pedestal is stretched out annular seal space through mounting hole and is fixedly connected with monitoring foundation pier face; between described base plate and pedestal, be provided with packoff, electronic dehumidifying device is installed in described annular seal space.
2. as claimed in claim 1ly for seismographic dehumidifying packoff is installed, it is characterized in that, described electronic dehumidifying device is once-through type, is connected with and exchanges power supply changeover device or the direct supply that turns direct current.
3. as claimed in claim 1 or 2ly for seismographic dehumidifying packoff is installed, it is characterized in that, described electronic dehumidifying device is semi-conductor condensation dehumidifier.
4. as claimed in claim 1 or 2ly for seismographic dehumidifying packoff is installed, it is characterized in that, described electronic dehumidifying device is arranged on the top of protective cover.
5. as claimed in claim 1ly for seismographic dehumidifying packoff is installed, it is characterized in that, described packoff is the grommet type seals being stretched on pedestal sidewall, and the edge of described mounting hole and grommet type seals recline and push against.
As described in claim 1 or 5 for seismographic dehumidifying packoff is installed; it is characterized in that; described protective cover is fixedly connected with by some braces that are distributed in protective cover periphery with base plate, and the junction of described protective cover and base plate is provided with the first ring washer.
As described in claim 1 or 5 for seismographic dehumidifying packoff is installed, it is characterized in that, between described base plate and monitoring foundation pier face, be provided with furring device to form air moisture barrier at base plate with monitoring between foundation pier face.
8. as claimed in claim 7ly for seismographic dehumidifying packoff is installed, it is characterized in that, described furring device be set in pedestal periphery and be pushed against base plate and monitoring foundation pier face between the second ring washer.
9. as claimed in claim 8ly for seismographic dehumidifying packoff is installed, it is characterized in that, between described base plate and monitoring foundation pier face, by some swell fixtures that are distributed in the second ring washer periphery, be fixedly connected with.
10. as claimed in claim 1ly for seismographic dehumidifying packoff is installed, it is characterized in that, described protective cover is cylindrical shape, and the sidewall of protective cover is provided with cable-through hole, in described cable-through hole, packing washer is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410359858.7A CN104111472B (en) | 2014-07-25 | 2014-07-25 | One is used for installing seismographic dehumidifying sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410359858.7A CN104111472B (en) | 2014-07-25 | 2014-07-25 | One is used for installing seismographic dehumidifying sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104111472A true CN104111472A (en) | 2014-10-22 |
| CN104111472B CN104111472B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410359858.7A Expired - Fee Related CN104111472B (en) | 2014-07-25 | 2014-07-25 | One is used for installing seismographic dehumidifying sealing device |
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| Country | Link |
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| CN (1) | CN104111472B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107561577A (en) * | 2017-08-24 | 2018-01-09 | 龚梁涛 | A kind of concealed apparatus for placing of natural gas extraction seismic detector |
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|---|---|---|---|---|
| CN2526749Y (en) * | 2002-03-11 | 2002-12-18 | 北京中能创新电力技术有限公司 | Semiconductor refrigerating gas humidifier |
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| CN102818944A (en) * | 2012-08-23 | 2012-12-12 | 四川电力科学研究院 | Device and method for improving accuracy of power frequency electric field strength detection device |
| CN103115409A (en) * | 2013-03-06 | 2013-05-22 | 海南瑞尔电子科技有限公司 | Efficient electronic dehumidifier |
| CN204028373U (en) * | 2014-07-25 | 2014-12-17 | 浙江省地震监测预报研究中心 | It is a kind of for seismographic dehumidifying packoff is installed |
-
2014
- 2014-07-25 CN CN201410359858.7A patent/CN104111472B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2526749Y (en) * | 2002-03-11 | 2002-12-18 | 北京中能创新电力技术有限公司 | Semiconductor refrigerating gas humidifier |
| CN2549817Y (en) * | 2002-09-17 | 2003-05-14 | 李开基 | Electronic dehumidity and anti-mould furniture |
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| CN103115409A (en) * | 2013-03-06 | 2013-05-22 | 海南瑞尔电子科技有限公司 | Efficient electronic dehumidifier |
| CN204028373U (en) * | 2014-07-25 | 2014-12-17 | 浙江省地震监测预报研究中心 | It is a kind of for seismographic dehumidifying packoff is installed |
Non-Patent Citations (1)
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| CN107561577A (en) * | 2017-08-24 | 2018-01-09 | 龚梁涛 | A kind of concealed apparatus for placing of natural gas extraction seismic detector |
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| CN104111472B (en) | 2016-08-17 |
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