CN106198298A - A kind of negative pressure water absorber of material - Google Patents
A kind of negative pressure water absorber of material Download PDFInfo
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- CN106198298A CN106198298A CN201610766611.6A CN201610766611A CN106198298A CN 106198298 A CN106198298 A CN 106198298A CN 201610766611 A CN201610766611 A CN 201610766611A CN 106198298 A CN106198298 A CN 106198298A
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- pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
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Abstract
The invention discloses the negative pressure water absorber of a kind of material, it includes pressure-bearing cylinder, seals lid, tank and vacuum-pumping equipment, pressure-bearing cylinder both sides respectively arrange a negative tube and are connected with tank and vacuum-pumping equipment respectively, intake valve and water intaking valve it is provided with on negative tube, pressure-bearing cylinder sidewall is provided with drain valve on the lower, wherein seal the portion of covering and be provided with pressure vacuum gauge and relief valve, the surrounding that sealing lid contacts with pressure-bearing cylinder is provided with seal washer, respectively arranging two hooks on the barrel that pressure-bearing cylinder is relative, hook arranges two ends the stainless steel of annulus.Described negative pressure water absorber simple in construction, it is easy to operation, can be widely used in the negative pressure submerging test of material.
Description
Technical field
The present invention relates to field of civil engineering, particularly relate to the negative pressure water absorber of a kind of material.
Background technology
The permafrost distribution of China is extensive, and its area accounts for the 21.5% of area.Build recently as China's economy
If development and the policy execution of development of the West Regions, underground engineering field engineering build quantity increasing, the most all kinds of
Highway in cold region and railway tunnel etc..By tunnel, the highway in cold region investigation runed is found have more than 80% in tunnel in cold area
All there is various freeze injury phenomenon, wherein the tunnel generation seepage of 60%, the appearance lining concrete of about 24% peels off, opens
Split, slump, the problem such as depression.These disease Tunnel Repair maintenance costs quantity is shied by annual each department and relevant traffic enterprise
People, Ling Ding tunnel, Cui Ling tunnel, No. 1 tunnel of western Luo Qi and strange No. 2 tunnels of Xi Luo built such as China Northeast Forest Areas are exactly example
Card.
In order to avoid cold district underground engineering main body produces freeze injury, the most all take antifreezing heat insulation measure.Different underground works
Journey main structure body, due to the diversity of geological environment Yu hydrologic condition, proposes different requirements, wherein to guarantor to insulation material
The water resistance of adiabator has particular/special requirement, and insulation material is prevented by especially complex geological condition Xia Han district rich water tunnel
Water requires the highest.It is more normal that this is primarily due to the percolating water phenomenon that cold district rich water tunnel causes due to various construction factors
See, next to that under conditions of tunnel waterproof and water drainage system lost efficacy, cause a behind hydrops at the beginning of tunnel, so that treatment technology for tunnel seepage phenomenon
More serious.Treatment technology for tunnel seepage occurs the insulation material heat insulation effect of Yi Duihan district rich water tunnel to impact, especially through too much
Year winter freeze the spring and melt, cause the heat insulation effect of insulation material to decline year by year, shorten the service life of insulation material, finally result in
Losing efficacy, not only can affect tunnel also can make tunnel scrap when normally using serious.
When insulation material is under the comprehensive function of Tunnel Surrounding Rock Pressure or hydraulic pressure, inside Groundwater infiltration to insulation material,
So that insulation material becomes a kind of composite of two media composition, change the material under insulation material initial condition special
Property, affect the using effect of insulation material.In sum, in conjunction with insulation material practical implementation and environmental condition thereof, exploitation
Such material a kind of submerging test equipment at various pressures, and then be analyzed its heat-insulating property on this basis having
Important engineering significance, but in the market not for the instrument used by the material indoor submerging test under condition of negative pressure
Device equipment.
Summary of the invention
The present invention is for overcoming disadvantages mentioned above, it is provided that the negative pressure water absorber of a kind of material, it is possible in different negative pressure value conditions
The submerging test of lower mensuration material, and easily operated.
For reaching above-mentioned purpose, the present invention adopts the following technical scheme that:
The negative pressure water absorber of a kind of material, including pressure-bearing cylinder, seals lid, tank and vacuum-pumping equipment, pressure-bearing cylinder
Both sides respectively arrange a negative tube and are connected with tank and vacuum-pumping equipment respectively, and negative tube is provided with intake valve and water inlet
Valve, pressure-bearing cylinder sidewall is provided with drain valve on the lower, wherein seals the portion of covering and is provided with pressure vacuum gauge and relief valve, seals lid
The surrounding contacted with pressure-bearing cylinder is provided with seal washer, and the barrel that pressure-bearing cylinder is relative respectively arranges two hooks, and hook is arranged
There is the stainless steel of annulus at two ends.
Preferred as technique scheme, described pressure-bearing cylinder is the square lacking end face, the inside dimension of described cylinder
For (200mm-210mm) × (200mm-210mm) × (200mm-210mm), the thickness of described pressure-bearing cylinder is 25mm-30mm, institute
State the position of pressure-bearing cylinder surrounding and close closure contacts to stretch out along the direction being perpendicular to barrel 30mm-40mm.
Preferred as technique scheme, described pressure-bearing cylinder is provided with three ducts, a diameter of 6mm-10mm, and described two
Root negative tube, by described duct connection water channel and vacuum-pumping equipment respectively, described negative tube is provided with intake valve and water inlet
Valve.It is provided with drain valve on described drain pipe.
Preferred as technique scheme, described pressure-bearing cylinder is provided with seal washer, and thickness is 5mm-8mm, seals
Lid and pressure-bearing cylinder contact surface are square-shaped frame, and described square-shaped frame is the length and width size of seal washer.
Preferred as technique scheme, described sealing covers and is provided with pressure vacuum gauge.
Preferred as technique scheme, described sealing covers and is provided with relief hole, a diameter of 6mm-10mm of relief hole,
It is provided with relief valve on described relief hole.
Preferred as technique scheme, described pressure-bearing cylinder and seal lid and be bolted, described seal lid and hold
Pressure cylinder contact surface is square-shaped frame, is respectively provided with a bolt at four angles of described square-shaped frame, remaining bolt according to
Arrange away from the spacing for 50mm-70mm.
Preferred as technique scheme, described pressure-bearing cylinder is transparent organic glass material.
Preferred as technique scheme, the described lid that seals is for transparent organic glass material, and thickness is 25mm-30mm,
Length and width is equal for 330mm-340mm.
Preferred as technique scheme, respectively arranges two hooks on the barrel that described pressure-bearing cylinder is relative, a length of
10mm-15mm, 50mm-70mm at the bottom of distance cylinder.Two ends are set on described hook and have the stainless steel of annulus.
The present invention uses the pressure-bearing cylinder of lucite material to cover with sealing, and can pass through water intaking valve, drain valve and sealing
The relief valve covered combines the force value that pressure vacuum gauge shows makes the force value in pressure-bearing cylinder control in stable scope, and leads to
Cross the hook of pressure-bearing cylinder sidewall and stainless steel stop material floats in the water surface, therefore, it is possible to measure under the conditions of different negative pressure value
The submerging test of material.Present configuration is simple, it is easy to operation.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention；
Fig. 2 is the front view of Fig. 1；
Fig. 3 is the profile of pressure-bearing cylinder；
Wherein: 1-pressure-bearing cylinder；2-seal washer；3-seals lid；4-bolt；5-pressure vacuum gauge；6-relief valve；7-vacuum
Air-extractor；8-tank；9-negative tube；10-intake valve；11-water intaking valve；12-drain pipe；13-drain valve；14-links up with；15-
Stainless steel；16-sample.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in further details.
Seeing Fig. 1, Fig. 2 and Fig. 3, the present invention includes pressure-bearing cylinder 1, seals lid 3, tank 8 and vacuum-pumping equipment 7；Its
Middle pressure-bearing cylinder 1 both sides respectively arrange a negative tube 9, be connected with tank 8 and vacuum-pumping equipment 7 respectively, negative tube 9 is provided with
Intake valve 10 and water intaking valve 11；Pressure-bearing cylinder 1 sidewall is provided with drain valve 13 on the lower；Wherein seal lid 3 tops and be provided with Vacuum Pressure
Power table 5 and relief valve 6；The surroundings that sealing lid 3 contacts with pressure-bearing cylinder 1 are provided with seal washer 2；The relative cylinder of pressure-bearing cylinder 1
Respectively arranging two hooks 14 on wall, hook arranges two ends the stainless steel 15 of annulus.Pressure-bearing cylinder 1 uses transparent organic glass
Material, the inside dimension of cylinder is (200mm-210mm) × (200mm-210mm) × (200mm-210mm), the thickness of pressure-bearing cylinder 1
For 25mm-30mm, pressure-bearing cylinder 1 surrounding with seal positions that lid 3 contacts and stretch out along the direction being perpendicular to barrel 30mm-
40mm.Seal and be provided with relief hole on lid 3, a diameter of 6mm-10mm of relief hole.Pressure-bearing cylinder 1 and sealing lid 3 are by bolt 4 even
Connecing, sealing lid 3 with pressure-bearing cylinder 1 contact surface is square-shaped frame, is respectively provided with a bolt 4 at four angles of square-shaped frame, remaining
Bolt 4 arrange according to spacing that spacing is 50mm-70mm.Drain valve 13 it is provided with on drain pipe 12.It is provided with on pressure-bearing cylinder 1
Seal washer 2, thickness is 5mm-8mm, and sealing lid 3 with pressure-bearing cylinder 1 contact surface is square-shaped frame, and square-shaped frame is seal washer
The length and width size of 2.Pressure-bearing cylinder 1 is provided with three ducts, a diameter of 6mm-10mm.Sealing lid 3 is transparent organic glass material, thick
Degree is 25mm-30mm, and length and width is equal for 330mm-340mm.The relative barrel of pressure-bearing cylinder 1 respectively arranges two extensions
Hook 14, a length of 10mm-15mm, 50mm-70mm at the bottom of distance cylinder, hook arranges two ends the stainless steel 15 of annulus.
Operation principle that the present invention is main and process: apparatus of the present invention are applicable to the negative pressure submerging test of material, i.e. negative
Measuring the moisture content of material in the environment of pressure, pressure limit is at 0MPa～0.1MPa.
Use apparatus of the present invention has specifically comprising the following steps that of pressure submerging test
1) preparing sample, the size of sample is (150 ± 2) mm × (150 ± 2) mm × original thickness, weighs up on balance
Its quality；
2) sample prepared is put into pressure-bearing cylinder bottom center, by two stainless steels respectively with pressure-bearing cylinder inside extension
Hook is connected；
3) sealing ring is put into pressure-bearing cylinder top lid top cover labyrinth, with bolt by sealing lid and pressure-bearing cylinder compact siro spinning technology,
Check whether relief valve, drain valve, intake valve and water intaking valve close, and pressure vacuum gauge is returned to zero；
4) open intake valve and water intaking valve, then open vacuum-pumping equipment, start evacuation, the water level in pressure-bearing cylinder
Higher than closing water intaking valve during material end face 5cm, when the vacuum that pressure vacuum gauge shows is for-0.1MPa, closes intake valve, stop
Only bleed, and the state now that records is 0；
5) slowly open relief valve, make outside air enter in pressure-bearing cylinder, to adjust the negative pressure in pressure-bearing cylinder.With pressure-bearing cylinder
As a example by interior negative pressure is 0.01MPa, close relief valve when the vacuum that pressure vacuum gauge shows is for-0.09MPa, now in cylinder
Negative pressure is 0.01MPa.
6) in the case of negative pressure is 0.01MPa (negative pressure value determines) according to test requirements document, material immersion 24h is allowed (to soak
Time determines according to test requirements document)；
7) after submerging test terminates, open relief valve and drain valve, make the moisture in pressure-bearing cylinder discharge, unload bolt, beat
Open sealing lid, take off stainless steel, take out material, dry, with wet cloth, the moisture that material surface is unnecessary, and claim its quality.
Claims (10)
1. a negative pressure water absorber for material, including pressure-bearing cylinder (1), it is characterised in that: it is provided with two on described pressure-bearing cylinder (1)
Root negative tube (9) and a drain pipe (12), pressure-bearing cylinder (1) is provided with sealing lid (3).
The negative pressure water absorber of a kind of material the most according to claim 1, it is characterised in that: described pressure-bearing cylinder (1) is scarce
The square of few end face, the inside dimension of described cylinder is (200mm-210mm) × (200mm-210mm) × (200mm-210mm),
The thickness of described pressure-bearing cylinder (1) is 25mm-30mm, and the position that described pressure-bearing cylinder (1) surrounding contacts with sealing lid (3) is along vertical
Stretch out 30mm-40mm in the direction of barrel.
The negative pressure water absorber of a kind of material the most according to claim 1, it is characterised in that: described pressure-bearing cylinder (1) is arranged
Having three ducts, a diameter of 6mm-10mm, described two negative tubes (9) are by described duct connection water channel (8) and vacuum respectively
Air-extractor (7), described negative tube (9) is provided with intake valve (10) and water intaking valve (11), and described drain pipe (12) is upper to be arranged
There is drain valve (13).
The negative pressure water absorber of a kind of material the most according to claim 1, it is characterised in that: set on described pressure-bearing cylinder (1)
Being equipped with seal washer (2), thickness is 5mm-8mm, and sealing lid (3) with pressure-bearing cylinder (1) contact surface is square-shaped frame, described square
Frame is the length and width size of seal washer (2).
The negative pressure water absorber of a kind of material the most according to claim 1, it is characterised in that: described sealing sets on lid (3)
It is equipped with pressure vacuum gauge (5).
The negative pressure water absorber of a kind of material the most according to claim 1, it is characterised in that: described sealing sets on lid (3)
It is equipped with relief hole, a diameter of 6mm-10mm of relief hole, described relief hole is provided with relief valve (6).
The negative pressure water absorber of a kind of material the most according to claim 1, it is characterised in that: described pressure-bearing cylinder (1) and close
Capping (3) is connected by bolt (4), and described sealing lid (3) is square-shaped frame with pressure-bearing cylinder (1) contact surface, at described square
Four angles of frame are respectively provided with a bolt (4), and remaining bolt (4) is arranged according to the spacing that spacing is 50mm-70mm.
The negative pressure water absorber of a kind of material the most according to claim 1, it is characterised in that: described pressure-bearing cylinder (1) is
Bright lucite material.
The negative pressure water absorber of a kind of material the most according to claim 1, it is characterised in that: the described lid (3) that seals is
Bright lucite material, thickness is 25mm-30mm, and length and width is equal for 330mm-340mm.
The negative pressure water absorber of a kind of material the most according to claim 1, it is characterised in that: in described pressure-bearing cylinder (1) phase
To barrel on two hooks (14) are respectively set, a length of 10mm-15mm, 50mm-70mm at the bottom of distance cylinder.On described hook (14)
Two ends are set and have the stainless steel (15) of annulus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610766611.6A CN106198298A (en) | 2016-08-29 | 2016-08-29 | A kind of negative pressure water absorber of material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610766611.6A CN106198298A (en) | 2016-08-29 | 2016-08-29 | A kind of negative pressure water absorber of material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106198298A true CN106198298A (en) | 2016-12-07 |
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ID=58088622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610766611.6A Pending CN106198298A (en) | 2016-08-29 | 2016-08-29 | A kind of negative pressure water absorber of material |
Country Status (1)
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| CN (1) | CN106198298A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107188392A (en) * | 2017-06-08 | 2017-09-22 | 郑州旭飞光电科技有限公司 | Microcirculation device and the platinum channel system with the microcirculation device |
| CN110286485A (en) * | 2019-07-04 | 2019-09-27 | 上海索倍信息科技有限公司 | A kind of water injection type refraction depth of field device |
Citations (4)
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|---|---|---|---|---|
| JP2004020512A (en) * | 2002-06-20 | 2004-01-22 | Taisei Corp | Method for measuring specific gravity and water absorption of lock material, water absorption method, an drying method |
| CN203069471U (en) * | 2012-12-21 | 2013-07-17 | 山西潞安环保能源开发股份有限公司 | Device for testing water absorption performance of coal |
| CN103969007A (en) * | 2014-05-29 | 2014-08-06 | 福建中烟工业有限责任公司 | Tightness detection device of transparent paper for cigarette packing |
| CN205483895U (en) * | 2016-03-16 | 2016-08-17 | 中国石油大学(北京) | Rock core imbibition experimental apparatus |
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2016
- 2016-08-29 CN CN201610766611.6A patent/CN106198298A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004020512A (en) * | 2002-06-20 | 2004-01-22 | Taisei Corp | Method for measuring specific gravity and water absorption of lock material, water absorption method, an drying method |
| CN203069471U (en) * | 2012-12-21 | 2013-07-17 | 山西潞安环保能源开发股份有限公司 | Device for testing water absorption performance of coal |
| CN103969007A (en) * | 2014-05-29 | 2014-08-06 | 福建中烟工业有限责任公司 | Tightness detection device of transparent paper for cigarette packing |
| CN205483895U (en) * | 2016-03-16 | 2016-08-17 | 中国石油大学(北京) | Rock core imbibition experimental apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107188392A (en) * | 2017-06-08 | 2017-09-22 | 郑州旭飞光电科技有限公司 | Microcirculation device and the platinum channel system with the microcirculation device |
| CN110286485A (en) * | 2019-07-04 | 2019-09-27 | 上海索倍信息科技有限公司 | A kind of water injection type refraction depth of field device |
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Application publication date: 20161207 |