CN206573555U - A kind of laboratory shield foaming agent performance detecting system - Google Patents
A kind of laboratory shield foaming agent performance detecting system Download PDFInfo
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- CN206573555U CN206573555U CN201720229811.8U CN201720229811U CN206573555U CN 206573555 U CN206573555 U CN 206573555U CN 201720229811 U CN201720229811 U CN 201720229811U CN 206573555 U CN206573555 U CN 206573555U
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- foaming agent
- foam
- detecting system
- agent performance
- performance detecting
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- 239000004088 foaming agent Substances 0.000 title claims abstract description 40
- 239000006260 foam Substances 0.000 claims abstract description 55
- 238000012360 testing method Methods 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 239000002689 soil Substances 0.000 claims abstract description 10
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 claims description 22
- 239000000945 filler Substances 0.000 claims description 14
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 9
- 238000005187 foaming Methods 0.000 abstract description 7
- 238000011156 evaluation Methods 0.000 abstract description 5
- 239000013049 sediment Substances 0.000 abstract description 5
- 230000007423 decrease Effects 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000012827 research and development Methods 0.000 description 3
- 201000004569 Blindness Diseases 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model is related to a kind of laboratory shield foaming agent performance detecting system.Including foamable composition device, half-life period test device and torsion-testing apparatus.Foamable composition device：The sample introduction end of foam maker is connected by check valve, adjustable rotor flowmeter, liquid-supplying system and gas circuit control assembly with mixed liquid box and air compressor respectively.Sample outlet end connects flexible pipe.Half-life period test device：Funnel is put on support, funnel is corresponding with flexible pipe, hopper outlet is corresponding with the measuring device being placed on balance.Torsion-testing apparatus is that agitator tank is connected with foam meter and soil body meter respectively, and motor drives the main axis in agitator tank, and torque sensor is connected by shaft coupling and motor connection, torque sensor with computer.The utility model can objective, accurate analysis foam core capabilities index and its influence to sediment improvement, objective evaluation is made to foaming properties by laboratory data and instructs to apply exactly, overall efficiency is improved, safeguards construction safety.
Description
Technical field
The utility model is related to a kind of test in laboratory system, more particularly to a kind of experiment for shield foaming agent performance
Room detecting system.
Background technology
Shield technique is the core technology in modern excavation work.In recent years, each big city of China was developed on a large scale
Urban track traffic is, it is necessary to use increasing shield excavation machine.At present, the shield machine used in subway construction is generally
Earth pressure balanced, foaming system is earth pressure balanced shield " key element ".The use of shield foaming agent has 20 so far
History for many years, the way for particularly improveing soil property using bubble nearly ten years increasingly obtains the attention of engineering circles, and China makes
It is also increasing with the quantity of foaming agent.
But, current shield foaming agent product there is no the checkout facility and device of standard, also the examination criteria without specification,
Produce and engineering experience is still relied on the running parameter of foaming agent to shield using unit, rest on the basis of construction experience
On.To shield with lacking theoretical guidance in terms of foaming agent performance evaluation, to the research and development of shield foaming agent and using bringing
Various problems：1. due to being theoretically unsound, the blindness that bubble is used in shield-tunneling construction is caused, geological conditions is run into bad
When, without bubble injection rate is targetedly increased, the waste of foaming agent is caused, or in order to reduce cost, inappropriate reduction foaming
, easily there is security incident in the usage amount of agent.2. because foaming agent product category is various, unit in charge of construction cannot be distinguished by performance, only
Can after buying gathered data in practice of construction, that is, influence construction speed waste of resource and fund again.3. the research and development of foaming agent are given
Blindness is brought, the performance of product can only be verified by live practical operation, expend substantial amounts of manpower and financial resources, R＆D cycle
It is long.
The core capabilities index of foam is grasped because prior art objective, accurate can not be analyzed and its to sediment improvement
Influence, it is impossible to foaming properties are made with objective evaluation and application is instructed exactly, can only be according to live practical application effect to bubble
The performance of foam agent makes fuzzy Judgment, takes time and effort, and there is hidden danger to construction safety, influences overall efficiency.So being badly in need of pin
To the test in laboratory means of shield foaming agent performance detection.
The content of the invention
In order to overcome the shortcomings of that prior art is present, the utility model provides a kind of laboratory shield foaming agent performance detection
System.For shield theoretical direction is provided with foaming agent performance evaluation.
The technical solution adopted in the utility model is：A kind of laboratory shield foaming agent performance detecting system, by foaming agent
Foam device, half-life period test device and torsion-testing apparatus are constituted.
Described foamable composition device：At the sample introduction end of foam maker, foam maker and foaming agent mixed liquid box
Between be sequentially provided with check valve I, adjustable rotor flow meter I and liquid-supplying system；Between foam maker and air compressor according to
It is secondary to be provided with check valve II, adjustable rotor flow meter II and gas circuit control assembly.
The sample outlet end of foam maker is connected with flexible pipe.
Described half-life period test device：Funnel is placed on support, the entrance of funnel is corresponding with flexible pipe outlet, funnel goes out
Mouth is corresponding with the measuring device being placed on balance.
Described torsion-testing apparatus：Foam meter is corresponding with flexible pipe outlet, agitator tank respectively with foam meter and
Soil body meter is connected, and motor drives the main axis being arranged in agitator tank, and torque sensor is connected by shaft coupling and motor
Connect, torque sensor is connected with computer.
A kind of above-mentioned laboratory shield foaming agent performance detecting system, described foam maker is by body, filling
Grain, grid and flange composition, the two ends of body are respectively mounted flange, and flange stretches into tubular body and is arranged with two seals groove, close
O-ring seal is placed in sealing groove, flange is provided with some fixing holes, and the two ends of some screw rods extend through fixing hole, pass through nut
Body is fixed；Liquid fast joint and gas fast joint are provided with the flange at body sample introduction end, the sample outlet end of body is provided with bubble
Foam exports fast joint；Filler particles are provided with body, a grid is respectively mounted at the sample introduction end of body and sample outlet end.
A kind of above-mentioned laboratory shield foaming agent performance detecting system, grid is arranged between filler particles and flange,
A diameter of 2mm hole is uniformly distributed on grid.
A kind of above-mentioned laboratory shield foaming agent performance detecting system, described grid is taper, during placement, its tip
It is respectively facing sample introduction end and the sample outlet end of body.
A kind of above-mentioned laboratory shield foaming agent performance detecting system, described filler particles are a diameter of 3mm and straight
The mixture of bead, ceramic particle or plastic grain that footpath is 2mm.
A kind of above-mentioned laboratory shield foaming agent performance detecting system, described funnel lower end is provided with piston.
A kind of above-mentioned laboratory shield foaming agent performance detecting system, agitator tank inner main axis are provided with propeller.
It is preferred that, described helical form agitating paddle is double helix agitating paddle.
The beneficial effects of the utility model are：
1. the utility model, improves the structure of foam maker, and equipped with adjustable rotor flowmeter, can be according to experiment
Need to be precisely controlled frostproof froth n parameter, optimum proportioning is found out by experiment.It is unidirectional by being respectively mounted in gas circuit/fluid path
Valve, gas circuit/fluid path pressure is unbalanced when preventing work, causes that liquid enters gas circuit or gas enters fluid path, to flowmeter, feed flow
System and gas circuit control assembly etc. play a protective role.Matched somebody with somebody flowmeter is glass rotameter, and dependable performance, installation makes
With convenient, the flow of gas/liquid can be controlled by adjusting flowmeter, the purpose for being precisely controlled foaming parameter is reached.Flange with
O-ring seal is placed between body, sealing function is played.It is furnished with grid in body between filler particles and flange, it is on the one hand fixed
Filler particles in body.Another aspect grid is taper, and tip is towards the entry/exit sample end of flange during placement, so in generator
Inlet side can play certain peptizaiton to gas and liquid, be conducive to being sufficiently mixed for gas-liquid.And the port of export passes through grid point
Hold the foam released finer and smoother uniform.Filler particles are the pearl of the mixture, respectively diameter 3mm and 2mm of two kinds of particle diameters
Mixture, pearl material be glass, ceramics or wear-resistant plastic.Two kinds of particles are used in mixed way, and gas, liquid are same during work
When enter generator, pass through in particles filled space, gas liquid collides the fine and smooth uniform bubble of generation.
2. the utility model, configuration half-life period determines device, core capabilities index-half-life period of foam can be tested, for bubble
The running parameter of foam agent provides theoretical foundation.
3. the utility model, there is provided torsion-testing apparatus, by dynamic torque sensor, and equipped with computer terminal, is received
Collection improvement parameter, influence of the addition of foam to sediment improvement device moment of torsion, rotating speed and power is measured by experiment.Through foam
The foam that generator is sent is mixed and is put into agitator tank according to a certain percentage with the soil body to be improved, and torque sensor is adopted during work
Collect main shaft operation torque, rotating speed and power, be transferred to terminal computer, theoretical foundation is provided to research staff.
In a word, the utility model, by lab analysis data, objective, accurate can analyze and grasp the nuclear of foam
Foaming properties can be made objective evaluation by laboratory data and instructed exactly by energy index and its influence to sediment improvement
Using raising overall efficiency safeguards construction safety.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of foam maker.
Fig. 3 is the structural representation of agitator tank.
Fig. 4 is the structural representation of half-life period test device.
Embodiment
As Figure 1-Figure 4, a kind of laboratory shield foaming agent performance detecting system, by foamable composition device, partly declines
Phase test device 9 and torsion-testing apparatus 8 are constituted.
Described foamable composition device：At the sample introduction end of foam maker 7, foam maker 7 and foaming agent mixed liquor
Check valve I 11, adjustable rotor flow meter I 5 and liquid-supplying system 3 are sequentially provided between case 1；Foam maker 7 and air compression
Check valve II 10, adjustable rotor flow meter II 6 and gas circuit control assembly 4 are sequentially provided between machine 2.
As shown in Fig. 2 described foam maker 7 is made up of body 71, filler particles 72, grid 73 and flange 74, pipe
The two ends of body 71 are respectively mounted flange 74, and flange 74 stretches into and two seals groove 78 is arranged with inside body 71, is put in seal groove 78
O-ring seal 75 is put, flange 74 is provided with some fixing holes, and the two ends of some screw rods 77 extend through fixing hole, pass through nut 76
Body 71 is fixed；Liquid fast joint and gas fast joint are provided with the flange 74 at the sample introduction end of body 71, body 71 goes out sample
End is provided with foam outlet fast joint；Filler particles 72 are provided with body 71, are respectively mounted at the sample introduction end of body 71 and sample outlet end
One grid 73.
Described grid 73 is arranged between filler particles 72 and flange 74, is uniformly distributed a diameter of 2mm's on grid 73
Hole.Described grid 73 is taper, and during placement, its tip is respectively facing sample introduction end and the sample outlet end of body 71.
Described filler particles 72 are a diameter of 3mm and a diameter of 2mm hybrid particles, and described hybrid particles can be adopted
With bead, ceramic particle or plastic grain.
The sample outlet end of foam maker 7 is connected with flexible pipe 14.
Described half-life period test device：Funnel 91 is placed on support 93, the entrance of funnel 91 is corresponding with the outlet of flexible pipe 14,
The outlet of funnel 91 is corresponding with the measuring device 92 being placed on balance 94.The described lower end of funnel 91 is provided with piston 95.
Described torsion-testing apparatus 8：Foam meter 15 is corresponding with the outlet of flexible pipe 14, agitator tank 81 respectively with frothmeter
Measuring device 15 and soil body meter 12 are connected, and motor 84 drives the main shaft 85 being arranged in agitator tank 81 to rotate, and torque sensor leads to
Shaft coupling 83 and motor connection are crossed, torque sensor 82 is connected with computer 13.
The inner main axis 85 of agitator tank 81 are provided with propeller 86.It is preferred that, described helical form agitating paddle 86 is double spiral shells
Revolve agitating paddle.
The course of work of the present utility model is：
1st, foaming test
Certain density mixed liquor (generally 2-5%) is configured, suitable gas liquid ratio is adjusted (generally (10-20)：1),
Following several tests can be done using foamable composition device：
(1) different brands foaming agent, can be by observing a barmy integrality in the case of mixed liquid concentration identical
With the stability of fine and smooth uniformity coefficient, and foam, optimal gas-liquid ratio, i.e. expansion ratio are found.
(2) same brand foaming agent, under identical gas-liquid ratio, the mixed liquor institute for observing various concentrations is barmy complete
Property stability with fine and smooth uniformity coefficient, and foam, find optimal mixed liquid concentration, i.e. stoste mixes ratio.
The optimum mix amount and expansion ratio of foaming agent can be determined according to test data, practical application is instructed.
2nd, half-life period tests
Foam volume when being reduced to original volume 50% time used be referred to as half-life period of bubble.It is that dregs keeps stream plasticity
Core index.
Method of testing：By the foam injection decline funnel sent by foamable composition device, and weigh the quality of foam,
Decline funnel is put on support, piston is opened, and starts timing, a measuring device is placed below decline funnel (such as empty burning
Cup), and it is to bubble to configure liquid quality in the sustainable quality for weighing trickle after foam liquefaction of electronic balance, record beaker
The half-life period t1/2 of time used, i.e. foam during foam quality 50%；At least carry out three parallel tests.
The volume of decline funnel is about actual expansion ratio with the mass ratio for injecting foam.To decline funnel injection bubble
Require foam-filled closely knit during foam, avoid producing larger space as far as possible, in order to avoid the accuracy of the calculating of the actual expansion ratio of influence.
3rd, sediment improvement is tested
The soil sample of certain mass is fitted into agitator tank, initial moment of torsion, rotating speed and power is recorded, added by several times into soil sample
Enter foaming agent, and observe the situation of change of the moment of torsion, rotating speed and power of main shaft, when moment of torsion, rotating speed and power no longer change or become
Stop adding foam, and the addition of total foam when changing less, the volume ratio for calculating foam and soil sample is foam
Injection rate.Different soil samples can coordinate other improved materials to use.
The utility model can be measured foam injection rate by experimental data and improve the state of dregs, indirect reaction foam
Intensity and dynamic stability.
Claims (8)
1. a kind of laboratory shield foaming agent performance detecting system, it is characterised in that tested by foamable composition device, half-life period
Device (9) and torsion-testing apparatus (8) are constituted；
Described foamable composition device：At the sample introduction end of foam maker (7), foam maker (7) and foaming agent mixed liquor
Check valve I (11), adjustable rotor flow meter I (5) and liquid-supplying system (3) are sequentially provided between case (1)；
Check valve II (10), adjustable rotor flow meter II are sequentially provided between foam maker (7) and air compressor (2)
And gas circuit control assembly (4) (6)；
The sample outlet end of foam maker (7) is connected with flexible pipe (14)；
Described half-life period test device：Funnel (91) is placed on support (93), entrance and the flexible pipe (14) of funnel (91) are exported
Correspondence, the outlet of funnel (91) is corresponding with the measuring device (92) being placed on balance (94)；
Described torsion-testing apparatus (8)：Foam meter (15) is corresponding with flexible pipe (14) outlet, agitator tank (81) respectively with bubble
Foam meter (15) and soil body meter (12) connection, motor (84) drive the main shaft (85) being arranged in agitator tank (81) to turn
Dynamic, torque sensor (82) is connected by shaft coupling (83) with motor (84), and torque sensor (82) is connected with computer (13).
2. a kind of laboratory shield foaming agent performance detecting system according to claim 1, it is characterised in that described bubble
Foam generator (7) is made up of body (71), filler particles (72), grid (73) and flange (74), the two ends difference of body (71)
Mounting flange (74), flange (74), which stretches into be arranged with inside body (71) in two seals groove (78), seal groove (78), places close
Sealing rubber ring (75), flange (74) is provided with some fixing holes, and the two ends of some screw rods (77) extend through fixing hole, pass through nut
(76) it is body (71) is fixed；Liquid fast joint and gas fast joint, pipe are provided with the flange (74) at body (71) sample introduction end
The sample outlet end of body (71) is provided with foam outlet fast joint；Filler particles (72), the sample introduction in body (71) are provided with body (71)
End and sample outlet end are respectively mounted a grid (73).
3. a kind of laboratory shield foaming agent performance detecting system according to claim 2, it is characterised in that grid (73)
Between filler particles (72) and flange (74), a diameter of 2mm hole is uniformly distributed on grid (73).
4. a kind of laboratory shield foaming agent performance detecting system according to Claims 2 or 3, it is characterised in that described
Grid (73) be taper, during placement, its tip is respectively facing sample introduction end and the sample outlet end of body (71).
5. a kind of laboratory shield foaming agent performance detecting system according to Claims 2 or 3, it is characterised in that described
Filler particles (72) be a diameter of 3mm and a diameter of 2mm bead, the mixture of ceramic particle or plastic grain.
6. a kind of laboratory shield foaming agent performance detecting system according to claim 1 or 2 or 3, it is characterised in that institute
Funnel (91) lower end stated is provided with piston (95).
7. a kind of laboratory shield foaming agent performance detecting system according to claim 1 or 2 or 3, it is characterised in that stir
Tank (81) inner main axis (85) are mixed provided with propeller (86).
8. a kind of laboratory shield foaming agent performance detecting system according to claim 7, it is characterised in that described spiral shell
It is double helix agitating paddle to revolve shape agitating paddle (86).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720229811.8U CN206573555U (en) | 2017-03-10 | 2017-03-10 | A kind of laboratory shield foaming agent performance detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720229811.8U CN206573555U (en) | 2017-03-10 | 2017-03-10 | A kind of laboratory shield foaming agent performance detecting system |
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| Publication Number | Publication Date |
|---|---|
| CN206573555U true CN206573555U (en) | 2017-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720229811.8U Expired - Fee Related CN206573555U (en) | 2017-03-10 | 2017-03-10 | A kind of laboratory shield foaming agent performance detecting system |
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| Country | Link |
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| CN (1) | CN206573555U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927024A (en) * | 2019-11-22 | 2020-03-27 | 中建五局土木工程有限公司 | Foam half-life period measuring equipment for shield and foam half-life period measuring method |
-
2017
- 2017-03-10 CN CN201720229811.8U patent/CN206573555U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927024A (en) * | 2019-11-22 | 2020-03-27 | 中建五局土木工程有限公司 | Foam half-life period measuring equipment for shield and foam half-life period measuring method |
| CN110927024B (en) * | 2019-11-22 | 2022-05-10 | 中建五局土木工程有限公司 | Foam half-life period measuring equipment for shield and foam half-life period measuring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171020 |