CN211274254U - Foaming device - Google Patents
Foaming device Download PDFInfo
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- CN211274254U CN211274254U CN201921703860.6U CN201921703860U CN211274254U CN 211274254 U CN211274254 U CN 211274254U CN 201921703860 U CN201921703860 U CN 201921703860U CN 211274254 U CN211274254 U CN 211274254U
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Abstract
The utility model relates to a tunnel and underground works construction technical field provide a foaming device. The foaming device comprises a compressed gas conveying device, a mixed liquid conveying device, a foam generator and a controller, wherein the compressed gas conveying device comprises an air compressor, an air storage tank, a gas pipeline, a gas speed regulating valve and a gas flowmeter; the mixed liquid conveying device comprises a centrifugal pump, a liquid pipeline, a liquid flowmeter and a liquid pressure gauge; the controller is in signal connection with the gas speed regulating valve and the centrifugal pump. Compressed air that the air compressor machine produced in this application stores in the gas holder to pass through the gas holder towards gas pipeline transport compressed air, guarantee that compressed air atmospheric pressure is stable, and accessible controller adjusts atmospheric pressure and hydraulic pressure in real time, obtain the foam that the foaming rate is high, the steady bubble nature is good, and can directly be used for instructing the shield structure job site to carry out the dregs improvement through the foaming parameter of adjusting, reduce construction risk and construction cost, avoid debugging the foaming parameter repeatedly simultaneously, improve the efficiency of construction.
Description
Technical Field
The utility model relates to a tunnel and underground works construction technical field, concretely relates to foaming device.
Background
The subway shield tunnel construction often meets complex strata, such as clay layers tackified when meeting water, sandy soil layers with strong water permeability, sandy gravel strata difficult to form, slightly weathered and middle weathered rocks, composite strata with soft upper parts and hard lower parts, and the like. Especially in sandy gravel stratum, slightly weathered and moderately weathered rock stratum and other strata, if the slag soil improvement effect is not good, the following problems can occur: the cutter head torque is too high, so that shield tunneling is difficult, and ground settlement is difficult to control; the instability of a tunnel face (also called sub-face, namely a working face for continuously pushing forward when a tunnel is excavated) and the foundation collapses caused by the caking of a cutter head, the spouting of a screw machine and the serious damage of a cutter; occlusion of the pressure chamber results in uncontrolled pressure within the chamber, causing ground uplift and torque rise problems.
The best modifier for improving the slag soil is a foaming agent. However, the performance of the foaming agent and the parameter setting of the on-site shield tunneling machine have important influence on the improvement of the muck, so that the working parameters with the best foaming effect need to be obtained through experiments. The foam device that present laboratory was equipped with the supporting foam device of shield structure machine has very big difference, and the atmospheric pressure stability of the compressed air that provides through the air compressor machine is relatively poor, and atmospheric pressure can not reach the on-the-spot needs, leads to the foaming parameter that the laboratory debugged to be difficult to direct and is applied to the shield structure job site, can't direct guidance practice, and can't adjust atmospheric pressure and hydraulic pressure in the experimentation, reduces the experimental efficiency.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problem or at least partially solve the above technical problem, the utility model provides a foaming device.
The foaming device comprises:
the compressed gas conveying device comprises an air compressor and a gas storage tank, wherein the gas storage tank is used for storing air compressed by the air compressor, a gas pipeline is connected to the gas storage tank, and a gas speed regulating valve and a gas flowmeter are arranged on the gas pipeline;
the mixed liquid conveying device comprises a centrifugal pump and a liquid pipeline, wherein the centrifugal pump is used for pumping mixed liquid into the liquid pipeline, and a liquid flowmeter and a liquid pressure gauge are arranged on the liquid pipeline;
a foam generator having a first end connected to the gas pipe and the liquid pipe and a second end for outputting foam;
and the controller is in signal connection with the gas speed regulating valve and the centrifugal pump.
Optionally, still include the mixing box, the mixing box is connected with foamer pipeline and rivers pipeline, be equipped with in the mixing box and be used for becoming foamer and water stirring mixing liquid's agitator pump.
Optionally, the foam generator further comprises a foam tank for receiving the foam output by the foam generator, and the foam tank is connected with the foam generator through a pipeline.
Optionally, a liquid discharge pump for discharging liquid is arranged on the foam tank.
Optionally, a foam output ball valve for controlling the on-off of the pipeline is arranged on the pipeline.
Optionally, a pressure sensor for detecting the pressure of the foam output by the foam generator is arranged on the pipeline.
Optionally, the gas pipeline is further provided with a gas inlet ball valve, a pneumatic triple piece and a gas one-way valve.
Optionally, the liquid pipeline is further provided with a liquid inlet ball valve, a liquid one-way valve and a safety valve.
Optionally, the foaming device further comprises a control panel in signal connection with the controller, wherein a display screen is arranged on the control panel and used for displaying the foaming parameters.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
compressed air that the air compressor machine produced in this application stores in the gas holder to carry compressed air towards gas pipeline through the gas holder, guarantee that compressed air atmospheric pressure is stable, and accessible controller adjusts atmospheric pressure and hydraulic pressure in real time, it is high to obtain the foaming rate, foam that the foam stability is good, and can directly be used for instructing the shield structure job site to carry out the dregs improvement through the foaming parameter of adjusting, reach better improvement effect, reduce construction risk and construction cost, avoid debugging the foaming parameter repeatedly simultaneously, the efficiency of construction is improved.
Drawings
Fig. 1 is a front view of a foaming device according to an embodiment of the present invention;
fig. 2 is a left side view of a foaming device according to an embodiment of the present invention;
fig. 3 is a plan view of a foaming device according to an embodiment of the present invention.
Reference numerals:
1. an air compressor; 2. a gas storage tank; 3. an intake ball valve; 4. a stirring pump; 5. a pneumatic triplet; 6. a gas speed regulating valve; 7. a gas flow meter; 8. a centrifugal pump; 9. a liquid pressure gauge; 10. a liquid flow meter; 11. a liquid check valve; 12. a gas check valve; 13. a foam generator; 14. a pressure sensor; 15. a foam output ball valve; 16. a safety valve; 17. a liquid inlet ball valve; 18. a control panel; 19. a foam box; 20. a liquid discharge pump.
Detailed Description
In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples. It is to be understood that the embodiments described are some, but not all embodiments of the invention. The specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting. All other embodiments, which can be derived from the description of the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.
Referring to fig. 1, 2 and 3, the foaming device provided in the embodiment of the present application includes a compressed gas delivery device, a mixed liquid delivery device, a foam generator 13, a controller, a mixing box, a foam box 19 and a control panel 18, and the control panel 18 is in signal connection with the controller.
The compressed gas conveying device comprises an air compressor 1 and an air storage tank 2, wherein the air compressor 1 is used for generating compressed gas, the air storage tank 2 is used for storing air compressed by the air compressor 1, the air storage tank 2 is connected with a gas pipeline, and a gas speed regulating valve 6 and a gas flowmeter 7 are arranged on the gas pipeline. During the use, make gas enter into the gas pipeline through opening the valve on the gas holder 2, through the gaseous flow of 7 real-time detection gas pipeline of gas flowmeter, flow and the settlement flow that detects in the gas pipeline when gas flowmeter 7 has the deviation, the accessible is adjusted the aperture of gas governing valve 6, comes the flow and the pressure of regulation gas, until reaching required numerical value.
The mixed liquid conveying device comprises a centrifugal pump 8 and a liquid pipeline, wherein the centrifugal pump 8 is used for pumping mixed liquid into the liquid pipeline, and a liquid flowmeter 10 and a liquid pressure gauge 9 are arranged on the liquid pipeline. The flow and the water pressure of the mixed liquid in the liquid pipeline are respectively detected through the liquid flowmeter 10 and the liquid pressure gauge 9, and when the deviation between the flow and the water pressure in the liquid pipeline and a set value is detected, the flow and the pressure of the mixed liquid can be adjusted by adjusting the opening of the centrifugal pump 8 until a required numerical value is reached.
The foam generator 13 has a first end connected to the gas and liquid pipes and a second end for outputting foam. After the mixed liquid and the compressed air enter the foam generator 13, mixing and foaming are performed, and the obtained foam flows out through the second end of the foam generator 13. The first end of the foam generator 13 here refers to the end connected to the gas pipe, i.e. the left end in fig. 3; the second end of the foam generator 13 refers to the end connected to the subsequent device, i.e., the right end in fig. 3.
The controller is in signal connection with the gas speed regulating valve 6 and the centrifugal pump 8, and the controller is in signal connection with the control panel 18, so that the opening degrees of the gas speed regulating valve 6 and the centrifugal pump 8 can be adjusted through the control panel 18, the operation is convenient, and the real-time adjustment is convenient. Further optimally, a display screen is arranged on the control panel 18 and used for displaying foaming parameters, and an operator can adjust the equipment according to the foaming parameters fed back by the display screen. The foaming parameters include flow parameters of the mixed liquid, hydraulic parameters, air pressure parameters of the compressed gas, foaming amount parameters of the foaming foam generator 13, and the like.
Compressed air that air compressor machine 1 produced in this application stores in gas holder 2, and through gas holder 2 towards gas pipeline transport compressed air, guarantee that compressed air atmospheric pressure is stable, and accessible controller adjusts atmospheric pressure and hydraulic pressure in real time, it is high to obtain the foaming rate, foam that the foam stability is good, and the foaming parameter adjusted can directly be used for instructing the shield structure construction site to carry out the dregs improvement, reach better improvement effect, reduce construction risk and construction cost, avoid debugging the foaming parameter repeatedly simultaneously, construction efficiency is improved.
The mixing box is connected with a foaming agent conveying pipeline and a water flow conveying pipeline, the foaming agent and water enter the mixing direction, the foaming agent and the water are stirred into mixed liquid through a stirring pump 4 arranged in the mixing box, and the mixed liquid is pumped into a liquid pipeline through a centrifugal pump 8 and then enters a foam generator 13.
The foam box 19 is used for receiving the foam output by the foam generator 13, the foam box 19 is connected with the foam generator 13 through a pipeline, the foam generated by the foam generator 13 enters the foam box 19 through the pipeline, and a relevant performance test is performed in the foam box 19. Further optimally, the foam tank 19 is provided with a liquid discharge pump 20 for discharging liquid, that is, the tested foam is broken and changed into liquid and then discharged through the liquid discharge pump 20, so that the next experiment is facilitated. And the pipeline is provided with a foam output ball valve 15 for controlling the on-off of the pipeline, and the circulation of foam is controlled through the foam output ball valve 15, so that the foam quantity entering the foam box 19 is controlled.
In some embodiments, a pressure sensor 14 is disposed on the pipe for detecting the pressure of the foam output from the foam generator 13, and the pressure of the foam output through the second end of the foam generator 13 can be measured by the pressure sensor 14. Since in actual use the foam output by the pressure sensor 14 acts directly on the working surface, and the space in which the working surface is located is a closed space, in order to avoid damage to the working surface, the pressure of the foam output by the foam generator 13 should not exceed the maximum pressure to which the working surface is subjected. If the modifier with the best effect on improving the muck is obtained in the experimental process, the air pressure of the compressed air is required to be adjusted downwards when the air pressure of the compressed air is greater than the set pressure, and the air pressure is controlled within the set range, so that the negative influence is avoided.
The gas pipeline of the application is also provided with an air inlet ball valve 3, a pneumatic triple piece 5 and a gas one-way valve 12. Wherein the inlet ball valve 3 is used for controlling the on-off of the gas pipeline. Compressed gas directly gets into foam generator 13 through the check valve in, and gaseous check valve 12 prevents effectively that the phenomenon that liquid back-suction gas circuit pipeline was mixed to the valve on the gas holder 2 suddenly from taking place. The pneumatic triple piece 5 comprises three parts, namely an air pressure reducing valve, a filter and an oil atomizer, wherein the pressure reducing valve can stabilize the pressure of an air source, so that the air source is in a constant state, and the damage to hardware such as a valve or an actuator and the like due to sudden change of the air pressure of the air source can be reduced. The filter is used for cleaning the air source, and can filter moisture in the compressed air and prevent the moisture from entering the device along with the air. The oil atomizer can lubricate moving parts of the engine body, can lubricate parts which are inconvenient to be lubricated with lubricating oil, and greatly prolongs the service life of the engine body.
The liquid pipeline is also provided with a liquid inlet ball valve 17, a liquid one-way valve 11 and a safety valve 16. Wherein the liquid inlet ball valve 17 is used for controlling the on-off of a liquid pipeline. The mixed liquid can enter the foam generator 13 through the liquid check valve 11, the liquid check valve 11 and the safety valve 16 can effectively prevent the mixed liquid in the foam generator 13 from flowing backwards, and the safety valve 16 can prevent the phenomenon that the pressure in the liquid pipeline is too high and bursts.
The specific use method is as follows:
starting the air compressor 1, filling the air storage tank 2, adjusting the pneumatic triple piece 5 to obtain stable compressed air, and adjusting the opening degree of the air speed regulating valve 6 on the control panel 18 to obtain the required compressed air flow; and pouring the prepared foaming agent and a certain proportion of water into a mixing box to obtain a mixed liquid with the anionic surfactant mass percentage of 3%. The centrifugal pump 8 is started, the opening degree of the centrifugal pump 8 is adjusted on the control panel 18, the flow rate of the foaming agent solution is obtained, the liquid pressure is read through the liquid pressure gauge 9, and when the foaming agent solution and the compressed air reach the foam generator 13, mixing and foaming are carried out. Through a plurality of tests, the foam with uniform foam holes, large quantity, high foaming rate and good foam stability is obtained. And the numerical values of the gas flowmeter 7, the liquid flowmeter 10 and the liquid pressure gauge 9 displayed on the display screen are recorded for guiding the site shield construction.
The application has the following advantages:
the foaming agent for the shield is subjected to a foaming test in a foaming device, and the foam with high foaming rate, good foam stability, uniform foam holes and large amount is obtained by controlling the pressure and flow change of compressed air and the pressure and flow change of a foaming agent solution of the foaming device.
According to the requirements of a shield construction site, the device can be used for obtaining compressed air pressure and flow values and foaming agent solution pressure and flow values of dry foam, wet foam and semi-dry semi-wet foam in a laboratory, and directly available parameter adjustment values are provided for site adjustment of construction units. Greatly reducing the test time of field personnel and ensuring the smooth operation of shield construction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (9)
1. A foaming apparatus, comprising:
the compressed gas conveying device comprises an air compressor and a gas storage tank, wherein the gas storage tank is used for storing air compressed by the air compressor, a gas pipeline is connected to the gas storage tank, and a gas speed regulating valve and a gas flowmeter are arranged on the gas pipeline;
the mixed liquid conveying device comprises a centrifugal pump and a liquid pipeline, wherein the centrifugal pump is used for pumping mixed liquid into the liquid pipeline, and a liquid flowmeter and a liquid pressure gauge are arranged on the liquid pipeline;
a foam generator having a first end connected to the gas pipe and the liquid pipe and a second end for outputting foam;
and the controller is in signal connection with the gas speed regulating valve and the centrifugal pump.
2. The foaming apparatus as claimed in claim 1, further comprising a mixing tank connected to the blowing agent delivery conduit and the water flow delivery conduit, wherein a mixing pump is provided in the mixing tank for mixing the blowing agent and the water into the mixed liquid.
3. The foaming apparatus defined in claim 1, further comprising a foam tank for receiving the foam output from the foam generator, the foam tank being connected to the foam generator via a conduit.
4. Foaming device according to claim 3, wherein the foam chamber is provided with a drainage pump for draining liquid.
5. The foaming device according to claim 3, wherein the pipeline is provided with a foam output ball valve for controlling the on-off of the pipeline.
6. Foaming device according to claim 3, wherein the conduit is provided with a pressure sensor for detecting the pressure of the foam output by the foam generator.
7. The foaming device according to claim 1, wherein the gas pipeline is further provided with an air inlet ball valve, a pneumatic triplet and a gas one-way valve.
8. The foaming apparatus defined in claim 1, wherein the liquid pipeline is further provided with a liquid inlet ball valve, a liquid check valve and a safety valve.
9. The foaming device of claim 1, further comprising a control panel in signal connection with the controller, wherein a display screen is disposed on the control panel, and the display screen is used for displaying the foaming parameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921703860.6U CN211274254U (en) | 2019-10-11 | 2019-10-11 | Foaming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921703860.6U CN211274254U (en) | 2019-10-11 | 2019-10-11 | Foaming device |
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| Publication Number | Publication Date |
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| CN211274254U true CN211274254U (en) | 2020-08-18 |
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| CN201921703860.6U Active CN211274254U (en) | 2019-10-11 | 2019-10-11 | Foaming device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012299A (en) * | 2020-08-24 | 2020-12-01 | 浙江骊尔智能卫浴有限公司 | Cloud foam control method and intelligent closestool |
| CN112844085A (en) * | 2020-12-29 | 2021-05-28 | 南昌轨道交通集团有限公司 | Automatic foam generating device and method for soil improvement test |
| CN114395400A (en) * | 2021-12-14 | 2022-04-26 | 中国铁道科学研究院集团有限公司金属及化学研究所 | Foaming agent for shield tunneling machine and preparation method and application thereof |
| CN114594815A (en) * | 2022-03-09 | 2022-06-07 | 华北科技学院(中国煤矿安全技术培训中心) | Automatic fire prevention and extinguishing control system for inert gas in goaf |
-
2019
- 2019-10-11 CN CN201921703860.6U patent/CN211274254U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012299A (en) * | 2020-08-24 | 2020-12-01 | 浙江骊尔智能卫浴有限公司 | Cloud foam control method and intelligent closestool |
| CN112012299B (en) * | 2020-08-24 | 2022-03-11 | 浙江骊尔智能卫浴有限公司 | Cloud foam control method and intelligent closestool |
| CN112844085A (en) * | 2020-12-29 | 2021-05-28 | 南昌轨道交通集团有限公司 | Automatic foam generating device and method for soil improvement test |
| CN114395400A (en) * | 2021-12-14 | 2022-04-26 | 中国铁道科学研究院集团有限公司金属及化学研究所 | Foaming agent for shield tunneling machine and preparation method and application thereof |
| CN114395400B (en) * | 2021-12-14 | 2023-11-14 | 中国铁道科学研究院集团有限公司金属及化学研究所 | Foaming agent for shield machine and preparation method and application thereof |
| CN114594815A (en) * | 2022-03-09 | 2022-06-07 | 华北科技学院(中国煤矿安全技术培训中心) | Automatic fire prevention and extinguishing control system for inert gas in goaf |
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