CN115805662A - Automatic preparation system for mixed liquid for shield construction - Google Patents
Automatic preparation system for mixed liquid for shield construction Download PDFInfo
- Publication number
- CN115805662A CN115805662A CN202211466577.2A CN202211466577A CN115805662A CN 115805662 A CN115805662 A CN 115805662A CN 202211466577 A CN202211466577 A CN 202211466577A CN 115805662 A CN115805662 A CN 115805662A
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- liquid
- contactor
- water glass
- mixed liquid
- contact
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- 239000007788 liquid Substances 0.000 title claims abstract description 159
- 238000010276 construction Methods 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 61
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 60
- 238000003860 storage Methods 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 10
- 239000000243 solution Substances 0.000 abstract description 14
- 239000008235 industrial water Substances 0.000 abstract description 11
- 239000011550 stock solution Substances 0.000 abstract description 11
- 230000001360 synchronised effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 3
- 239000011083 cement mortar Substances 0.000 description 3
- 230000005641 tunneling Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses an automatic preparation system of mixed liquid for shield construction, which relates to the technical field of shield construction and comprises a water glass raw liquid tank and a control box arranged at the rear side of the water glass raw liquid tank, wherein a first liquid outlet pipe is connected between the control box and the water glass raw liquid tank, a second liquid outlet pipe and a third liquid outlet pipe are connected on the control box, a first metering pump is connected on the second liquid outlet pipe, a first one-way valve is connected on the first metering pump, the third liquid outlet pipe is connected with a second metering pump, a second one-way valve is connected on the second metering pump, the first one-way valve and the second one-way valve are both connected with a fourth liquid outlet pipe, and the fourth liquid outlet pipe is connected with a mixed liquid storage tank. According to the automatic preparation system for the mixed liquid for shield construction, which adopts the structure, the first metering pump and the second metering pump are adopted to respectively meter the water glass stock solution and the industrial water, and the volume of the industrial water to be added is determined according to the concentration of the water glass solution and the concentration of the water glass stock solution, so that the water glass solution meeting the construction requirements is prepared.
Description
Technical Field
The invention relates to the technical field of shield construction, in particular to an automatic preparation system of mixed liquid for shield construction.
Background
The shield construction becomes a mature construction method of tunnel construction in a track traffic interval, synchronous grouting is an important work of the shield construction, and the synchronous grouting comprises synchronous single-liquid grouting and synchronous double-liquid grouting; the synchronous single-liquid grouting is to inject cement mortar into a segment and a cutter head excavation space which are out of the tail of the shield while the shield is tunneling so as to fill a building gap formed by the cutter head excavation space and the periphery of the segment; the synchronous two-fluid grouting is characterized in that mixed slurry consisting of cement mortar and water glass is injected into the excavation space of a segment and a cutter head which are separated from the tail of the shield while the shield is tunneling, the concentration and the volume of the injected water glass solution influence the solidification time of the cement mortar, and the length of the solidification time has great influence on the fixation of the segment separated from the tail of the shield and the posture of a formed tunnel.
The water glass solution used in the double-liquid grouting in the prior art is mostly manually prepared, a construction site worker introduces a certain volume of water glass stock solution into a water glass solution storage tank, and then injects construction water into the storage tank, the injected water volume is influenced by the responsibility and technical level of the operator, the concentration of the mixed liquid is difficult to accurately control, the quality of synchronous double-liquid grouting is influenced to a certain extent, and the double-liquid grouting is one of the quality influence factors of a formed tunnel.
Disclosure of Invention
The invention aims to provide an automatic preparation system of mixed liquid for shield construction, which solves the problem that the concentration of water glass solution required by double-liquid grouting in shield construction is difficult to control, realizes the accurate control of the concentration of the water glass solution, reduces the labor intensity of field construction, avoids the waste and construction environment pollution caused by the overflow of water glass stock solution caused by manually prepared slurry, and has good economic benefit and environmental benefit.
In order to achieve the purpose, the invention provides an automatic preparation system of mixed liquid for shield construction, which comprises a water glass raw liquid tank and a control box arranged at the rear side of the water glass raw liquid tank, wherein a first liquid outlet pipe is connected between the control box and the water glass raw liquid tank, a second liquid outlet pipe and a third liquid outlet pipe are connected onto the control box, a first metering pump is connected onto the second liquid outlet pipe, a first one-way valve is connected onto the first metering pump, the third liquid outlet pipe is connected onto the second metering pump, a second one-way valve is connected onto the second metering pump, the first one-way valve and the second one-way valve are both connected onto a fourth liquid outlet pipe, and the fourth liquid outlet pipe is connected onto a mixed liquid storage tank.
Preferably, a low liquid level control sensor, a middle liquid level control sensor and a high liquid level control sensor are arranged in the water glass raw liquid tank, the installation position of the low liquid level control sensor is 10cm away from the bottom of the water glass raw liquid tank, the installation position of the middle liquid level control sensor is 20-30 cm away from the bottom of the water glass raw liquid tank, and the installation position of the high liquid level sensor is 5cm away from the top of the water glass raw liquid tank.
Preferably, the installation height of the first liquid outlet pipe is greater than 3cm from the bottom of the water glass raw liquid tank.
Preferably, a controller is arranged in the control box, a change-over switch is arranged on the controller, one end of the change-over switch is connected with a power supply through a contact of the contactor KM2, and a manual contact and an automatic contact are arranged at the other end of the change-over switch.
Preferably, the automatic contact is sequentially connected with a mixed liquid high liquid level detection electrode H-G, a relay KA1 coil, a mixed liquid low liquid level detection electrode H-D, a contactor KM3 coil, a contactor KM4 coil, a contactor KM5, a contactor KM6 normally open contact, a KA2 coil, a contactor KM3 and a contactor KM4 coil, and a first branch is formed after the automatic contact and the contactor are connected in parallel.
Preferably, the manual contact is sequentially connected with a stop button SB2, a normally closed contact of a relay KA3, a contactor KM7, a normally open contact of a contactor KM8, a coil of the contactor KM3, and a coil of the contactor KM4 to form a second branch, and two ends of the normally open contacts of the contactor KM7 and the contactor KM8 after being connected in series are connected in parallel with a start button SB1; fuse FU3 establishes ties thermal relay FR1, FR2, establishes ties stoste low liquid level detection electrode Y-D again and constitutes the third branch road, and fuse FU3 is connected with the power through contactor KM 2's contact, first branch road, second branch road and third branch road parallel connection.
Preferably, a support is arranged below the mixed liquid storage tank.
Therefore, according to the automatic preparation system of the mixed liquid for shield construction, which adopts the structure, the first metering pump and the second metering pump are adopted to respectively meter the water glass stock solution and the industrial water, and the volume of the industrial water to be added is determined according to the concentration of the water glass solution and the concentration of the water glass stock solution, so that the water glass solution meeting the construction requirements is prepared.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic structural diagram of a mixed liquid preparation system according to an embodiment of an automatic mixed liquid preparation system for shield construction;
FIG. 2 is a schematic diagram of a control system connection according to an embodiment of the automatic preparation system for mixed liquid in shield construction;
FIG. 3 is an electrical schematic diagram of an automatic control system of an embodiment of an automatic preparation system for mixed liquid in shield construction according to the present invention;
FIG. 4 is an electrical schematic diagram of a manual control system of an embodiment of an automatic mixed liquid preparation system for shield construction according to the present invention;
reference numerals: 1. a water glass stock solution tank; 2. a control box; 3. a first liquid outlet pipe; 4. a second liquid outlet pipe; 5. a third liquid outlet pipe; 6. a first metering pump; 7. a second metering pump; 8. a first check valve; 9. a second one-way valve; 10. a fourth liquid outlet pipe; 11. a mixed liquid storage tank; 12. a support; 13. a low level control sensor; 14. a mid-level control sensor; 15. a high level control sensor; 16. a transfer switch; 17. automatic contact; 18. a manual contact; 19. a raw liquid low liquid level detection electrode H-G; 20. detecting electrodes H-G at high liquid level of the mixed liquid; 21. and detecting electrodes H-D at low liquid level of the mixed liquid.
Detailed Description
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Examples
The utility model provides a shield constructs mixed liquid automatic preparation system, including water glass crude tank 1 and the control box 2 of setting in 1 rear side of water glass crude tank, be connected with first drain pipe 3 between control box 2 and the water glass crude tank 1, be connected with second drain pipe 4 and third drain pipe 5 on the control box 2, be connected with first measuring pump 6 on the second drain pipe 4, be connected with first check valve 8 on the first measuring pump 6, second measuring pump 7 is connected to third drain pipe 5, be connected with second check valve 9 on the second measuring pump 7, fourth drain pipe 10 is all connected to first check valve 8 and second check valve 9, fourth drain pipe 10 is connected with mixed liquid storage tank 11. The water glass raw liquid tank 1 and the mixed liquid storage tank 11 are both made of stainless steel, the water glass raw liquid tank 1 is placed at a preset position of the shield tunneling machine trolley, and the volume of the mixed liquid storage tank 11 is not less than 0.5m 3 The length, width and height of the mixed liquid storage tank meet the installation space requirement of the shield machine trolley, a support 12 is arranged below the mixed liquid storage tank 11, and the support 12 is 10 # The method comprises the steps of manufacturing channel steel, wherein a first metering pump 6 is a water glass stock solution metering pump, a second metering pump 7 is an industrial water metering pump, and the first metering pump 6 and the second metering pump 7 share a base and are installed on the shield locomotive through bolt connection.
A low liquid level control sensor 13, a medium liquid level control sensor 14 and a high liquid level control sensor 15 are arranged in the water glass raw liquid tank 1, the installation position of the low liquid level control sensor 13 is 10cm away from the bottom of the water glass raw liquid tank 1, the installation position of the medium liquid level control sensor 14 is 20-30 cm away from the bottom of the water glass raw liquid tank 1, the installation position of the high liquid level sensor 15 is 5cm away from the top of the water glass raw liquid tank 1, and the installation height of a first liquid outlet pipe is larger than 3cm away from the bottom of the water glass raw liquid tank.
The control box 3 is internally provided with a controller, the controller is provided with a change-over switch 16, one end of the change-over switch 16 is connected with a power supply through a contact of the contactor KM2, and the other end of the change-over switch is provided with an automatic contact 17 and a manual contact 18.
The automatic contact 17 is connected with a mixed liquid high liquid level detection electrode H-G20, a relay KA1 coil, a mixed liquid low liquid level detection electrode H-D21, a contactor KM3 coil, a contactor KM4 coil, normally open contacts of contactors KM5 and KM6, a KA2 coil, a contactor KM3 and a contactor KM4 coil in sequence, and a first branch is formed after the two coils are connected in parallel.
The manual contact 18 is sequentially connected with a stop button SB2, a normally closed contact of a relay KA3, a contactor KM7, a normally open contact of a contactor KM8, coils of contactors KM3 and KM4 to form a second branch, and two ends of the normally open contacts of the contactor KM7 and the contactor KM8 after being connected in series are connected with a start button SB1 in parallel; fuse FU3 establishes ties thermorelay FR1, FR2, and low liquid level detection electrode Y-D19 of low liquid level of cascade constitutes the third branch road again, and fuse FU3 is connected with the power through contactor KM 2's contact, first branch road, second branch road and third branch road parallel connection.
The controller outputs an instruction to control the concentration of the water glass mixed liquid, the volume of the industrial water to be added is determined according to the concentration of the water glass stock solution and the concentration (volume ratio) of the water glass solution required by construction, the second metering pump 7 receives a flow (L/min) signal of the first metering pump 6, the output flow (L/min) of the second metering pump 7 is controlled by the signal, and the accurate control of the flow of the two paths of liquid is realized.
When the controller is in a manual state, the preparation of the mixed solution only has the function of automatic stop of high liquid level; when the controller is in the automatic state, the system is in the automatic circulation state.
When the system is used specifically, firstly, system equipment is installed: selecting a reasonable idle position of the shield machine trolley, installing and fixing a water glass mixed liquid storage tank 11 and a support 12 thereof, and distributing the water glass mixed liquid storage tank 11; laying storage positions of a water glass raw liquid tank 1, determining an introduction point of industrial water, installing and fixing a first metering pump 6 and a second metering pump 7, determining corresponding pipeline lengths according to site space positions, installing a first check valve 8 and a second check valve 9 at outlets of the first metering pump 6 and the second metering pump 7 respectively, installing a first liquid outlet pipe 3, a second liquid outlet pipe 4, a third liquid outlet pipe 5 and a fourth liquid outlet pipe 10, and completing installation of a mechanical part of equipment; selecting an electric power introduction point, installing a controller in the control box 2 according to a system control design scheme, and installing a liquid level control sensor in the water glass raw liquid tank 1 to complete corresponding electrical connection; after the no-load debugging equipment operates normally, industrial water is used for carrying out load debugging, the precision of the first metering pump 6 and the precision of the second metering pump 7 are verified, debugging acceptance is qualified, clear water in the sodium silicate raw liquid tank 1 and the mixed liquid storage tank 11 is discharged, and debugging acceptance of the equipment is completed.
Preparing mixed liquid after system equipment is installed: when the liquid level in the water glass raw liquid tank 1 reaches a medium liquid level, the first metering pump 6 and the second metering pump 7 are started simultaneously to respectively pump the water glass raw liquid and the industrial water, the two paths of liquid enter the fourth liquid outlet pipe 10 through the first check valve 8 and the second check valve 9 respectively, the two paths of liquid are fully mixed in the flowing process and then enter the mixed liquid storage tank 11, as shown in a schematic connection diagram of a control system in fig. 2, when the liquid level of the mixed liquid reaches a high liquid level of the mixed liquid storage tank 11, the first metering pump 6 and the second metering pump 7 are stopped, and the operation is repeated in a circulating mode; when the liquid level trouble in the middle of, system auto-stop when the liquid level in glass raw material jar 1 reaches the low liquid level, first measuring pump 6 no-load operation, second measuring pump 7 normally supply water when avoiding the empty jar of glass raw material jar, cause mixed liquid concentration unusual, avoid the equipment accident that first measuring pump 6 no-load probably caused simultaneously.
Therefore, according to the automatic preparation system of the mixed liquid for shield construction, which adopts the structure, the first metering pump and the second metering pump are adopted to respectively meter the water glass stock solution and the industrial water, and the volume of the industrial water to be added is determined according to the concentration of the water glass solution and the concentration of the water glass stock solution, so that the water glass solution meeting the construction requirements is prepared.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a shield constructs construction and mixes liquid automatic preparation system which characterized in that: including water glass crude liquid jar and setting up the control box of water glass crude liquid jar rear side, the control box with be connected with first drain pipe between the water glass crude liquid jar, be connected with second drain pipe and third drain pipe on the control box, be connected with first measuring pump on the second drain pipe, be connected with first check valve on the first measuring pump, the second measuring pump is connected to the third drain pipe, be connected with the second check valve on the second measuring pump, first check valve with the fourth drain pipe is all connected to the second check valve, the fourth drain pipe is connected with and mixes the liquid storage tank.
2. The automatic preparation system of mixed liquid for shield construction according to claim 1, characterized in that: the device is characterized in that a low liquid level control sensor, a middle liquid level control sensor and a high liquid level control sensor are arranged in the water glass raw liquid tank, the installation position of the low liquid level control sensor is 10cm away from the bottom of the water glass raw liquid tank, the installation position of the middle liquid level control sensor is 20-30 cm away from the bottom of the water glass raw liquid tank, and the installation position of the high liquid level sensor is 5cm away from the top of the water glass raw liquid tank.
3. The automatic preparation system of mixed liquid for shield construction according to claim 1, characterized in that: the installation height of the first liquid outlet pipe is larger than the distance of 3cm from the bottom of the water glass raw liquid tank.
4. The automatic preparation system of mixed liquid for shield construction according to claim 1, characterized in that: the control box is internally provided with a controller, the controller is provided with a change-over switch, one end of the change-over switch is connected with a power supply through a contact of the contactor KM2, and the other end of the change-over switch is provided with a manual contact and an automatic contact.
5. The automatic preparation system of mixed liquid for shield construction according to claim 4, characterized in that: the automatic contact is sequentially connected with a mixed liquid high liquid level detection electrode H-G, a relay KA1 coil, a mixed liquid low liquid level detection electrode H-D, a contactor KM3 coil, a contactor KM4 coil, a contactor KM5, a contactor KM6 normally open contact, a KA2 coil, a contactor KM3 and a contactor KM4 coil, and a first branch is formed after the automatic contact is connected in parallel.
6. The automatic preparation system of mixed liquid for shield construction according to claim 4, characterized in that: the manual contact is sequentially connected with a stop button SB2, a normally closed contact of a relay KA3, a contactor KM7, a normally open contact of a contactor KM8, a coil of the contactor KM3 and a coil of the contactor KM4 to form a second branch, and two ends of the normally open contact of the contactor KM7 and the normally open contact of the contactor KM8 after being connected in series are connected with a start button SB1 in parallel; fuse FU3 establishes ties thermal relay FR1, FR2, establishes ties stoste low liquid level detection electrode Y-D again and constitutes the third branch road, and fuse FU3 is connected with the power through contactor KM 2's contact, first branch road, second branch road and third branch road parallel connection.
7. The automatic preparation system of mixed liquid for shield construction according to claim 1, characterized in that: and a support is arranged below the mixed liquid storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211466577.2A CN115805662A (en) | 2022-11-22 | 2022-11-22 | Automatic preparation system for mixed liquid for shield construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211466577.2A CN115805662A (en) | 2022-11-22 | 2022-11-22 | Automatic preparation system for mixed liquid for shield construction |
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| CN115805662A true CN115805662A (en) | 2023-03-17 |
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| CN202211466577.2A Pending CN115805662A (en) | 2022-11-22 | 2022-11-22 | Automatic preparation system for mixed liquid for shield construction |
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2022
- 2022-11-22 CN CN202211466577.2A patent/CN115805662A/en active Pending
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