CN202916263U - Foam detection device - Google Patents
Foam detection device Download PDFInfo
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- CN202916263U CN202916263U CN 201220648045 CN201220648045U CN202916263U CN 202916263 U CN202916263 U CN 202916263U CN 201220648045 CN201220648045 CN 201220648045 CN 201220648045 U CN201220648045 U CN 201220648045U CN 202916263 U CN202916263 U CN 202916263U
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- foam
- ball valve
- frother
- detecting device
- container
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- Excavating Of Shafts Or Tunnels (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a foam detection device and relates to the technical field of shield machines. The foam detection device comprises a liquid system, a gas system and a foam collection and detection system, wherein the gas system comprises an air compressor and a first spherical valve; the liquid system comprises a foam mixed solution container, a heater placed in the foam mixed solution container, a pump, a second manometer, a second flowmeter, a third spherical valve and a foam generator; and the foam collection and detection system comprises a closed vessel, a third manometer, an adjustable reducing valve and a second spherical valve. As for foaming agents of the same manufacturer, the foam detection device can be used for analyzing the quality degree of the foaming agents indoor, improves the utilization ratio, avoids field test and relatively saves the construction cost; and as for foaming agents of different manufacturers, the foam detection device can quickly compare and analyze the utilization value of the foam agents on the shield machine, thereby having significance in selecting foaming agents in the earlier stage.
Description
Technical field
The utility model relates to the shield machine technical field, relates in particular to a kind of shield machine foam detecting device.
Background technology
The effect of foam is generally considered aspect two in the practice of construction process in the shield machine driving: the frothing percentage of foaming agent and the stability of foam.The first, frothing percentage: frothing percentage claims again " coefficient of foaming ", refers to the ratio of foam volume that the certain mass foaming agent solution produces and primary liquid volume, and it is an important indicator weighing the gas-development agent quality.The expression formula of frothing percentage can be represented by the formula:
In the formula: V
f---the foam volume of generation, V
1---the foaming agent liquor capacity.
The frothing percentage that is applied at present the special-purpose foaming agent of shield-tunneling construction is approximately 5-20, under kindred circumstances, frothing percentage is higher, the foam that the equivalent foaming agent produces is more, illustrate that it has high efficiency, but the two is interactional for frothing percentage and the stability of producing foam, and higher frothing percentage is that to sacrifice foam stability be cost.When analyzing foam property, only frothing percentage is high can not illustrate the superior of foaming agent, and should consider in conjunction with the stability of foam.Because foam is in pressured state in native cabin, and generally, foam mixes under pressure state with the soil body and carries out.Suppose pressure * volume=constant, then the frothing percentage when supporting pressure is P in the native cabin is:
In the formula: P
0---be standard atmospheric pressure, FER
1---the frothing percentage of depressing for normal atmosphere.
The frothing percentage of research foam is mainly set about from the foamability of foam.And the introducing of gas phase, liquid phase and energy is to form the foam essential condition, and the investigation of therefore general foamability refers to introducing under the condition that energy equates, what of foam generated amount.
The second, the stability of foam: the stability of foam refers to that foam is statically placed in the air for a long time and the character of not breaking.The stability of foam is to weigh an important indicator of foam quality.The quality of stability is reacted by defoamed ratio usually, and defoamed ratio is one of important parameter of weighing foam stability, and it is defined as follows formula.
In the formula: V
d---be the foam volume that dissipates, V
0---be the foam initial volume.
In the shield-tunneling construction, usually arrange the inlet of foam at cutterhead, native cabin, worm conveyor three places, by injecting foam soil improvement in the native cabin is become " Plastic Flow state ", and should be retained to the worm conveyor mouth and discharge smoothly.This just requires foam to have enough stability, can be present in the dregs until composite soil is discharged from worm conveyor to satisfy.So foam stability how will directly affect the performance of its effect.The frothing percentage of foam is as a variable element, higher frothing percentage can accomplish to produce more foam under the foaming agent of some, but there is the mutually relation of restriction in the stability of too high frothing percentage and foam, therefore should consider frothing percentage and the stability of foam.
The utility model content
Technical problem to be solved in the utility model provides a kind of foam detecting device, uses described device to have avoided field experiment in the quality of in office analysis foam, has saved cost.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of foam detecting device, it is characterized in that comprising liquid system, gas system and foam are collected detection system, described gas system comprises air compressor machine and the first ball valve, described liquid system comprises the foams mix liquid container, be positioned over the well heater in the foams mix liquid container, pump, the second pressure gauge, the second flowmeter, the 3rd ball valve and frother, described foam is collected detection system and is comprised closed container, the 3rd pressure gauge, adjustable compression release valve and the second ball valve, the water delivering orifice of described foams mix liquid container is through pump, the second pressure gauge, the second flowmeter is connected with the water inlet of frother with the 3rd ball valve, the foam mouth that goes out of frother is connected with the import of described closed container, the outlet of closed container is connected with the air intake opening of air compressor machine through the second ball valve, and gas outlet first ball valve of air compressor machine is connected with the air intake opening of frother.
Preferably: described gas system also comprises the first pressure gauge and first flow meter, and described the first pressure gauge and first flow meter are on the air intake opening and the pipeline between the first ball valve of frother.
Preferably: described well heater is Temperature controlled heater.
Preferably: described pump is the adjustable flow pump.
Preferably: described closed container is with the transparent closed container of scale mark on the outer wall.
Preferably: the pipeline between described the first ball valve and the frother is provided with the first retaining valve.
Preferably: the pipeline between described the 3rd ball valve and the frother is provided with the second retaining valve.
Preferably: described frother is the container of both ends open, and a hybrid chamber and composite steel silk screen are set in the container.
The beneficial effect that adopts technique scheme to produce is: described device can be increased operation rate in the good and bad degree of its quality of in office analysis for the foaming agent of same producer, avoids site test, has relatively saved construction cost; For the foaming agent of different manufacturers, comparative analysis goes out the value on shield machine fast, and the selection of foaming agent is significant for early stage.In addition, simple in structure, the low cost of manufacture of described device have and promote preferably and prospect of the application.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is composition schematic diagram of the present utility model;
Fig. 2 is the structural representation of frother among Fig. 1;
Wherein: 1, air compressor machine 2, the first ball valve 3, foams mix liquid container 4, well heater 5, pump 6, the second pressure gauge 7, the second flowmeter 8, the 3rd ball valve 9, frother 10, closed container 11, the 3rd pressure gauge 12, adjustable compression release valve 13, the second ball valve 14, the first pressure gauge 15, first flow meter 16, the first retaining valve 17, the second retaining valve 18, woven wire.
Embodiment
As shown in Figure 1, a kind of foam detecting device comprises liquid system, gas system and foam collection detection system.Described gas system comprises air compressor machine 1, the first ball valve 2, the first pressure gauge 14, first flow meter 15 and the first retaining valve 16; Described liquid system comprises foams mix liquid container 3, is positioned over well heater 4, pump 5, the second pressure gauge 6, the second flowmeter 7, the 3rd ball valve 8, the second retaining valve 17 and frother 9 in the foams mix liquid container; Described foam is collected detection system and is comprised closed container 10, the 3rd pressure gauge 11, adjustable compression release valve 12 and the second ball valve 13.
The water delivering orifice of described foams mix liquid container 3 is connected through pump 5, the second pressure gauge 6, the second flowmeter 7, the 3rd ball valve 8 and the water inlet of retaining valve 17 with frother 9 of being connected, preferred described well heater 4 is Temperature controlled heater, and described pump 5 is the adjustable flow pump; The foam mouth that goes out of frother 9 is connected with the import of described closed container 10, and the outlet of closed container 10 is connected with the air intake opening of air compressor machine 1 through the second ball valve 13, and preferred described closed container 10 is with the transparent closed container of scale mark on the outer wall; Gas outlet the first ball valve 2, the first pressure gauge 14, first flow meter 15 and the air intake opening of retaining valve 16 with frother 9 of being connected of air compressor machine 1 are connected, preferred described frother 9 is the container of both ends open, a hybrid chamber and composite steel silk screen are set in the container, woven wire 18 mesh diameters are between 0.05mm-0.2mm, and the structure of frother as shown in Figure 2.
The using method of this device is as follows:
1, the mixed liquid of the foam of configuration proper proportion places the foams mix liquid container, opens Temperature controlled heater and arranges temperature required;
2, close the first ball valve, open the second ball valve, adjust the set pressure of adjustable compression release valve;
3, open air compressor machine, observe the 3rd pressure gauge, when pressure reaches design pressure, close the second ball valve, then close air compressor machine;
4, readjusting air compressor machine, that pressure is set is required to producing foam;
5, open the 3rd ball valve, the pressure of adjustable flow pump is set and opens, observe the second flowmeter and the second manometric demonstration, when reaching designing requirement, open the first ball valve so that liquid gas mixes;
6, liquid gas is collected on the outer wall in the transparent closed container with scale mark by the frother foam generated;
7, after the foam of collecting reaches setting height h, close simultaneously adjustable flow pump and air compressor machine and close the first ball valve and the 3rd ball valve.
The process of the test of described device is as follows:
(1) foaming agent foamability and Detection of Stability
1, different former liquid hold-up foamabilities and Detection of Stability
Use foam of the same race, set identical foams mix flow quantity and air mass flow, uniform temp, and identical closed container pressure, test out the foam mixing liquid of equal volume in former liquid hold-up (K) not simultaneously, the height h of foam in the closed container, and the record foam height drops to ten foam height h1-h10 corresponding to time point t1-t10 difference in 0 process.
2, different air content foamabilities and Detection of Stability
Use foam of the same race, set identical foam solution content, identical foams mix flow quantity, uniform temp and identical closed container pressure, test out the foam mixing liquid of identical proportioning and volume at air content not simultaneously, foam height h in the closed container, and the record foam height drops to ten foam height h1-h10 corresponding to time point t1-t10 difference in 0 process.
3, foamability and Detection of Stability under the different temperatures
Use foam of the same race, set identical foams mix flow quantity and air mass flow, the same foam original liquid concentration, and identical closed container pressure, test out mixeding liquid temperature not simultaneously, the height h of foam in the closed container, and the record foam height drops to ten foam height h1-h10 corresponding to time point t1-t10 difference in 0 process.
Foamability and Detection of Stability when 4, simulating different support pressure
Use foam of the same race, set identical foams mix flow quantity and air mass flow, the same foam original liquid concentration, and under the uniform temp, test out the foam mixing liquid of equal volume at closed container pressure not simultaneously, the height h of foam in the closed container, and the record foam height drops to ten foam height h1-h10 corresponding to time point t1-t10 difference in 0 process.
(2) foam foamability not of the same race and Detection of Stability
Foam not of the same race is compared test, detect foam not of the same race under various conditions foam foamability and stability.
Can carry out following analysis by the above-mentioned experimental result that this device draws:
1, the foamability of the different frothing percentages of foaming agent (only changing the flow of air) detects, and analyzes relation and the curve plotting figure of FER and h;
2, the foam stability of the different frothing percentages of foaming agent (only changing the flow of air) detects, and draws the foam attenuation curve;
3, the foamability under the foaming agent different foam original liquid concentration detects, and analyzes relation and the curve plotting figure of K and h;
4, the foam stability of foaming agent different foam original liquid concentration detects, and draws the foam attenuation curve;
5, the foam foamability under the foaming agent different temperatures detects, the relation of analysis temperature and foam height h and curve plotting figure;
6, the foam stability under the foaming agent different temperatures detects, and draws the foam attenuation curve;
7, foaming agent foamability under the different support pressures of simulation detects, and analyzes the relation of pressure P and height h;
8, foaming agent foam stability under the different support pressures of simulation detects, and draws the foam attenuation curve.
Described device can be increased operation rate in the good and bad degree of its quality of in office analysis for the foaming agent of same producer, avoids site test, has relatively saved construction cost; For the foaming agent of different manufacturers, comparative analysis goes out the value on shield machine fast, and the selection of foaming agent is significant for early stage.In addition, simple in structure, the low cost of manufacture of described device have and promote preferably and prospect of the application.
Claims (8)
1. foam detecting device, it is characterized in that comprising liquid system, gas system and foam are collected detection system, described gas system comprises air compressor machine (1) and the first ball valve (2), described liquid system comprises foams mix liquid container (3), be positioned over the well heater (4) in the foams mix liquid container, pump (5), the second pressure gauge (6), the second flowmeter (7), the 3rd ball valve (8) and frother (9), described foam is collected detection system and is comprised closed container (10), the 3rd pressure gauge (11), adjustable compression release valve (12) and the second ball valve (13), the water delivering orifice of described foams mix liquid container (3) is through pump (5), the second pressure gauge (6), the second flowmeter (7) is connected with the water inlet of the 3rd ball valve (8) with frother (9), the foam mouth that goes out of frother (9) is connected with the import of described closed container (10), the outlet of closed container (10) is connected through the air intake opening of the second ball valve (13) with air compressor machine (1), and gas outlet first ball valve (2) of air compressor machine (1) is connected with the air intake opening of frother (9).
2. a kind of foam detecting device according to claim 1, it is characterized in that described gas system also comprises the first pressure gauge (14) and first flow meter (15), described the first pressure gauge (14) and first flow meter (15) are positioned on the air intake opening and the pipeline between the first ball valve (2) of frother (9).
3. a kind of foam detecting device according to claim 1 and 2 is characterized in that described well heater (4) is Temperature controlled heater.
4. a kind of foam detecting device according to claim 1 and 2 is characterized in that described pump (5) is the adjustable flow pump.
5. a kind of foam detecting device according to claim 1 and 2, it is characterized in that described closed container (10) on the outer wall with the transparent closed container of scale mark.
6. a kind of foam detecting device according to claim 1 and 2 is characterized in that the pipeline between described the first ball valve (2) and the frother (9) is provided with the first retaining valve (16).
7. a kind of foam detecting device according to claim 1 and 2 is characterized in that the pipeline between described the 3rd ball valve (8) and the frother (9) is provided with the second retaining valve (17).
8. a kind of foam detecting device according to claim 1 and 2 is characterized in that described frother (9) is the container of both ends open, arranges a hybrid chamber and composite steel silk screen in the container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220648045 CN202916263U (en) | 2012-11-30 | 2012-11-30 | Foam detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220648045 CN202916263U (en) | 2012-11-30 | 2012-11-30 | Foam detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202916263U true CN202916263U (en) | 2013-05-01 |
Family
ID=48164567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220648045 Expired - Fee Related CN202916263U (en) | 2012-11-30 | 2012-11-30 | Foam detection device |
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| Country | Link |
|---|---|
| CN (1) | CN202916263U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297420A (en) * | 2013-07-17 | 2015-01-21 | 国家电网公司 | System for evaluating liquid foaming performance |
| CN105699610A (en) * | 2016-04-25 | 2016-06-22 | 中国科学院武汉岩土力学研究所 | Device for testing performance of soil body foam modifier in soil pressure shield construction |
| CN105717261A (en) * | 2016-04-25 | 2016-06-29 | 中国科学院武汉岩土力学研究所 | Evaluation device and evaluation method for stability of shield soil modified foam |
| CN106444608A (en) * | 2016-10-31 | 2017-02-22 | 中铁工程装备集团有限公司 | Multifunctional fluid testing platform for shield tunneling machine |
| CN106680437A (en) * | 2017-02-28 | 2017-05-17 | 富兰克润滑科技（太仓）有限公司 | Device for testing foam characteristics of metal working fluid |
-
2012
- 2012-11-30 CN CN 201220648045 patent/CN202916263U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297420A (en) * | 2013-07-17 | 2015-01-21 | 国家电网公司 | System for evaluating liquid foaming performance |
| CN105699610A (en) * | 2016-04-25 | 2016-06-22 | 中国科学院武汉岩土力学研究所 | Device for testing performance of soil body foam modifier in soil pressure shield construction |
| CN105717261A (en) * | 2016-04-25 | 2016-06-29 | 中国科学院武汉岩土力学研究所 | Evaluation device and evaluation method for stability of shield soil modified foam |
| CN106444608A (en) * | 2016-10-31 | 2017-02-22 | 中铁工程装备集团有限公司 | Multifunctional fluid testing platform for shield tunneling machine |
| CN106680437A (en) * | 2017-02-28 | 2017-05-17 | 富兰克润滑科技（太仓）有限公司 | Device for testing foam characteristics of metal working fluid |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20131130 |