CN112855174B - Freezing reinforcement curtain device capable of preventing leakage - Google Patents
Freezing reinforcement curtain device capable of preventing leakage Download PDFInfo
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- CN112855174B CN112855174B CN202110150943.2A CN202110150943A CN112855174B CN 112855174 B CN112855174 B CN 112855174B CN 202110150943 A CN202110150943 A CN 202110150943A CN 112855174 B CN112855174 B CN 112855174B
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- filtering
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- 238000007710 freezing Methods 0.000 title claims abstract description 93
- 230000008014 freezing Effects 0.000 title claims abstract description 91
- 230000002787 reinforcement Effects 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 168
- 239000007788 liquid Substances 0.000 claims abstract description 47
- 239000012267 brine Substances 0.000 claims abstract description 43
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 42
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims description 56
- 230000005540 biological transmission Effects 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 238000010276 construction Methods 0.000 description 10
- 239000012535 impurity Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 150000003839 salts Chemical class 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 238000009413 insulation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000010257 thawing Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 208000001034 Frostbite Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The invention discloses a freezing reinforcement curtain device capable of preventing leakage, which comprises a nitrogen storage vehicle, a brine tank, a freezing pipe, a control device, a hydraulic pump and a heater, the brine tank is fixedly connected with the hydraulic pump, the heater is arranged in the brine tank, a plurality of freezing pipes are transversely arranged to form a freezing pipe row, the freezing pipe rows are longitudinally provided with three rows, a plurality of freezing pipes are connected in parallel to a pipeline system, a sealing block is arranged at the pipe orifice of the freezing pipe, a freezing cover plate is arranged on the sealing block, a liquid supply pipe and a liquid outlet pipe are fixedly arranged on the freezing pipe cover plate, the control mechanism is arranged above the freezing cover plate, the control mechanism is vertically provided with a water inlet and a water outlet, the inlet opening with the feed pipe is connected, the apopore with the drain pipe is connected, the inlet opening top still is provided with filter equipment. Through the difference of the flow rates of the water inlet hole and the water outlet hole of the comparison control device, when the difference of the rotating speed is too large, the water inlet hole is automatically closed, and the brine leakage is prevented.
Description
Technical Field
The invention relates to the technical field of shield construction, in particular to a freezing reinforcement curtain device capable of preventing leakage.
Background
The freezing method reinforcement has the characteristics of high stratum strength after reinforcement, good tightness, strong stratum adaptability and the like, and is widely applied to underground engineering construction in south China at present. Although the construction mode has the advantages of short freezing period and good freezing effect, cracks are easy to appear on the surface of the freezing pipe due to the effect of cold and hot alternation in the freezing construction process, so that saline water permeates underground, the freezing time is prolonged, the leakage judgment mode commonly adopted at present is to detect the height change of the liquid level in the saline water tank, but the mode has low efficiency, and the leakage position cannot be found out quickly.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to solve the technical problem of providing a freezing reinforced curtain device capable of preventing leakage.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a freezing reinforcement curtain device capable of preventing leakage, which comprises a nitrogen storage vehicle, a brine tank, freezing pipes, a control mechanism, a hydraulic pump and a heater, wherein the hydraulic pump is arranged at a valve of the brine tank, the heater is arranged in the brine tank, a plurality of freezing pipes are transversely arranged to form a freezing pipe row, three freezing pipe rows are longitudinally arranged, the liquid inlet end of each freezing pipe is connected with a water inlet branch pipe, the other end of each water inlet branch pipe is connected with a water inlet main pipe, the water inlet main pipe is connected with the nitrogen storage vehicle or the hydraulic pump, the liquid outlet end of each freezing pipe is connected with a water outlet branch pipe, the other end of each water outlet branch pipe is connected with a water outlet main pipe, the water outlet main pipe is connected with the brine tank, so that the freezing pipes are connected in parallel, and a sealing block is arranged at the pipe orifice of each freezing pipe, be provided with on the sealed piece and freeze the apron, freeze and have set firmly feed pipe and drain pipe on the apron, the feed pipe runs through sealed piece just the feed pipe extends to freeze the bottom of pipe, the drain pipe runs through sealed piece, just the drain pipe lower extreme with sealed piece bottom surface parallel and level, it is provided with to freeze the apron top control mechanism, control mechanism has vertically seted up inlet opening and apopore, the inlet opening with the feed pipe is connected, the apopore with the drain pipe is connected, the inlet opening top still is provided with filter equipment.
In a preferred technical scheme of the invention, the transverse interval of the freezing pipes adjacent to each other is 0.8m, the vertical interval of the freezing pipes adjacent to each other is 1m, and the length of the freezing pipes in the middle row is shorter than that of the freezing pipes in the adjacent row.
In a preferable technical scheme of the invention, the control mechanism comprises a flow sensor, two adjusting components and a motor, a transmission cavity is arranged between the water inlet and the water outlet, the motor is embedded at the bottom of the transmission cavity, an ellipsoid is fixedly arranged at the top end of an output shaft of the motor, the adjusting components are symmetrically arranged at two sides of the transmission cavity, each adjusting component comprises a first sliding block, a push rod, a push plate and a first spring, the first sliding block is arranged in a first sliding groove, the first sliding groove is positioned in the right wall of the water inlet, the push rod is arranged between the transmission cavity and the first sliding groove in a sliding manner, one end of the push rod is fixedly connected with the first sliding block, the push plate is fixed at the other end of the push rod, a first spring is arranged between the push plate and the inner wall of the transmission cavity, and the first spring is sleeved on the push rod, the bottom end of the transmission cavity is embedded with the motor, and the top of the rotating shaft of the motor is provided with an ellipsoid matched with the push plate.
In a preferred technical scheme of the present invention, the control mechanism is further provided with a buzzer, and the buzzer is connected with the flow sensor.
In a preferred technical scheme of the invention, the outer layers of the water inlet main pipe, the water outlet main pipe, the water inlet branch pipe and the water outlet branch pipe are all wrapped with heat insulation layers, and each heat insulation layer comprises 1 layer of rubber heat insulation pipe and 2 layers of sealing films.
In a preferred technical scheme of the invention, the filtering device comprises a filtering block, a filtering net and a flat plate, wherein a water inlet groove is formed in the upper end surface of the filtering block, a water outlet groove is formed in the lower end surface of the filtering block, the water inlet groove is connected with the water outlet groove through a filtering channel, a second sliding groove is formed in the top wall of the filtering channel, the filtering net is vertically arranged in the filtering channel, a second sliding block is fixed to the upper end of the filtering net and is arranged in the second sliding groove in a sliding manner, a second spring is arranged between the right end surface of the second sliding block and the right wall of the second sliding groove, a pressure relief channel is formed above the filtering channel, a liquid inlet of the pressure relief channel is communicated with the second sliding groove, a liquid outlet of the pressure relief channel is communicated with the water outlet groove, a one-way valve is further arranged in the pressure relief channel and comprises a sealing spring and a steel ball, the sealing spring is arranged in the one-way valve, the top end of the sealing spring is connected with the steel ball, the right end of the filtering channel is provided with the flat plate, the left end face of the flat plate is fixedly provided with the steel needle, the right end of the flat plate is connected with the fixed rod, the flat plate is fixed at the bottom end of the water outlet groove through the fixed rod, and the bottom end of the water inlet groove is connected with a sewage discharge channel.
In a preferred technical scheme of the invention, the water inlet main pipe is also connected with an air compressor.
In a preferred technical scheme of the invention, the water inlet is connected with the nitrogen storage vehicle through a water inlet main pipe and a water inlet branch pipe, the water outlet is connected with an exhaust pipe, and an upper port of the exhaust pipe is at least 2m away from the ground;
or, the inlet opening through intake house steward and inlet branch pipe with hydraulic pump connection, the apopore passes through outlet house steward and outlet branch pipe are connected with the brine tank.
The invention has the beneficial effects that:
1. according to the freezing reinforcement curtain device capable of preventing leakage, provided by the invention, through comparing the rotation speed difference between the two ends of the water inlet hole and the water outlet hole of the control mechanism, when the rotation speed difference is too large, the freezing pipe is indicated to be leaked, at the moment, the water inlet hole is automatically closed to prevent brine leakage, and meanwhile, the motor is controlled to rotate forwards or backwards through the rotation speed of the water inlet hole, and the ellipsoid is driven to rotate to push the first sliding block to move, so that the size of the opening of the water inlet hole is controlled, and the effect of stabilizing the liquid flow is achieved.
2. According to the freezing reinforcement curtain device capable of preventing leakage, provided by the invention, the salt water is supersaturated due to the fact that moisture is evaporated in the salt water heating process, salt in the salt water is crystallized and precipitated to form impurities, and the situation that the impurities block the automatic adjusting device and the liquid supply pipe in the salt water circulation process is effectively avoided by arranging the filtering device at the water inlet end of the control mechanism and utilizing the filtering effect of the filtering device.
Drawings
FIG. 1 is a schematic view showing an overall structure of a freezing-reinforced curtain apparatus capable of preventing leakage according to an embodiment of the present invention;
FIG. 2 is a schematic view of the installation structure of the control mechanism, the filtering device and the freezing pipe in the embodiment of the invention;
FIG. 3 is an enlarged schematic view at A in FIG. 2;
FIG. 4 is an enlarged schematic view at B of FIG. 2;
FIG. 5 is a schematic illustration of the connection between the nitrogen storage cart or brine tank and the freezing tubes in an embodiment of the present invention;
fig. 6 is a cross-sectional view in the direction C-C in fig. 4.
In the figure:
1-nitrogen storage vehicle, 2-brine tank, 3-air compressor, 4-freezing pipe, 5-control mechanism, 6-hydraulic pump, 7-heater, 8-liquid supply pipe, 9-liquid outlet pipe, 10-freezing cover plate, 11-shell, 12-water inlet hole, 13-water outlet hole, 14-flow sensor, 15-sealing block, 16-first slide block, 17-first chute, 18-push rod, 19-push plate, 20-transmission cavity, 21-first spring, 22-motor, 23-rotation shaft, 24-ellipsoid, 25-buzzer, 26-water inlet main pipe, 27-water inlet branch pipe, 28-water outlet main pipe, 29-water outlet branch pipe, 30-rotation speed sensor, 31-filter block, 32-water inlet tank, 33-a water outlet groove, 34-a filtering channel, 35-a filtering screen, 36-a second sliding block, 37-a second sliding groove, 38-a second spring, 39-a pressure relief channel, 40-a steel ball, 41-a sealing spring, 42-a flat plate, 43-a steel needle, 44-a fixed rod and 45-a sewage discharge channel.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in figure 1, the embodiment provides a freezing reinforcement curtain device capable of preventing leakage, which comprises a nitrogen storage vehicle 1, a brine tank 2, freezing pipes 4, a control mechanism 5, a hydraulic pump 6 and a heater 7, wherein the valve of the brine tank 2 is provided with the hydraulic pump 6, the brine tank 2 is internally provided with the heater 7, a plurality of freezing pipes 4 are transversely arranged to form a freezing pipe row, the freezing pipe row is longitudinally provided with three rows, the liquid inlet end of each freezing pipe 4 is connected with a water inlet branch pipe 27, the other end of each water inlet branch pipe 27 is connected with a water inlet main pipe 26, the water inlet main pipe 26 is connected with the nitrogen storage vehicle 1 or the hydraulic pump 6, the liquid outlet end of each freezing pipe 4 is connected with a water outlet branch pipe 29, the other end of each water outlet branch pipe 29 is connected with a water outlet main pipe 28, the water outlet main pipe 28 is connected with the brine tank 2, so that the freezing pipes 4 are connected in parallel, the pipe mouths of the freezing pipes 4 are provided with sealing blocks 15, be provided with on the sealed piece 15 and freeze apron 10, it has set firmly feed pipe 8 and drain pipe 9 on the cover plate 10 to freeze, feed pipe 8 runs through sealed piece 15 and feed pipe 8 and extends to the bottom that freezes pipe 4, drain pipe 9 runs through sealed piece 15, and port and the 15 bottom surface parallel and level of sealed piece under the drain pipe 9, it is provided with control mechanism 5 to freeze apron 10 top, control mechanism 5 has vertically seted up inlet opening 12 and apopore 13, inlet opening 12 is connected with feed pipe 8, apopore 13 is connected with drain pipe 9, inlet opening 12 top still is provided with filter equipment. By adopting a single-hole single-circulation connection mode, each freezing pipe 4 is connected in parallel to the water inlet main pipe 35 through the water inlet branch pipe 36, so that the liquid nitrogen temperature at the inlet of each freezing pipe is the same, and the freezing speed at each freezing pipe is ensured to be the same.
In order to improve the freezing speed, further, the adjacent freezing pipes 4 are transversely spaced by 0.8m and vertically spaced by 1m, and the length of the freezing pipe 4 in the middle row is shorter than that of the freezing pipe 4 in the adjacent row. By arranging the freezing pipes 4, the freezing range of each freezing pipe 4 is reduced, the freezing speed is improved, and the construction period is shortened.
In order to ensure that the freezing pipes do not leak and simultaneously stabilize the flow rate of liquid in the freezing pipes, the control mechanism comprises a flow sensor 14, two adjusting components and a motor 22, a transmission cavity 20 is formed between a water inlet 12 and a water outlet 13, the motor 22 is embedded at the bottom of the transmission cavity 20, an ellipsoid 24 is fixedly arranged at the top end of an output shaft 23 of the motor 22, the adjusting components are symmetrically arranged at two sides of the transmission cavity 20 and comprise a first sliding block 16, a push rod 18, a push plate 19 and a first spring 21, the first sliding block 16 is arranged in a first sliding groove 17, the first sliding groove 17 is positioned in the right wall of the water inlet 12, the push rod 18 is arranged between the transmission cavity 20 and the first sliding groove 17 in a sliding manner, one end of the push rod 18 is fixedly connected with the first sliding block 16, the push plate 19 is fixed at the other end of the push rod 18, the first spring 21 is arranged between the push plate 19 and the inner wall of the transmission cavity 20, and the first spring 21 is sleeved on the push rod 18, the bottom end of the transmission cavity 20 is embedded with a motor 22, and the top of the rotating shaft of the motor 22 is provided with an ellipsoid 24 matched with the push plate 19. When the flow at the water inlet 12 exceeds a set value, the motor 22 is controlled to rotate positively and drive the ellipsoid 24 to rotate through the rotating shaft 23, the push plate 19 is pushed to move rightwards, the push rod 18 pushes the first slide block 16 to move rightwards, the openings of the water inlet 12 and the water outlet 13 are reduced, the flow rate of liquid is reduced, and at the moment, the first spring 21 is compressed; similarly, when the flow of inlet opening 12 department is less than the setting value, control motor 22 reverses and drives ellipsoid 24 through axis of rotation 23 and rotate, push pedal 19 moves left under the effect of first spring 21, and drive first slider 16 and move left through push rod 18, make inlet opening 12 and apopore 13 opening increase, thereby accelerate the liquid velocity of flow, simultaneously because inlet opening and apopore department all are connected with flow sensor 14, when two positions velocity of flow differ too greatly, show that should freeze pipe 4 departments and leak, then control motor 22 rotates and seals inlet opening 12 and apopore 13.
In order to remind the operator in time after the leakage occurs, the control mechanism 5 is further provided with a buzzer 25, and the buzzer 25 is connected with the flow sensor 14. By comparing the flow rate difference between the water inlet 12 and the water outlet 13, when the difference is too large, the leakage at the freezing pipe 4 is indicated, and the buzzer 25 is controlled to give an alarm to remind an operator to check the leakage condition.
In order to reduce the loss of cooling capacity caused by the fact that the pipeline is exposed to the air, the outer layers of the water inlet main pipe 26, the water outlet main pipe 28, the water inlet branch pipe 27 and the water outlet branch pipe 29 are wrapped with heat insulation layers, and each heat insulation layer comprises 1 layer of rubber heat insulation pipe and 2 layers of sealing films. Prevent through the heat preservation that cold air from leaking, cause the injury to the staff.
In order to prevent water evaporation from causing salt crystallization and separation to generate impurities in the heating process and causing blockage of the automatic adjusting device 5 in the brine circulation process, the filtering device further comprises a filtering block 31, a filtering net 35 and a flat plate 42, the upper end surface of the filtering block 31 is provided with a water inlet groove 32, the lower end surface of the filtering block 31 is provided with a water outlet groove 33, the water inlet groove 32 is connected with the water outlet groove 33 through a filtering channel 34, the top wall of the filtering channel 34 is provided with a second sliding groove 37, the filtering net 35 is vertically arranged in the filtering channel 34, the upper end of the filtering net 35 is fixed with a second sliding block 36, the second sliding block 36 is slidably arranged in the second sliding groove 37, a second spring 38 is arranged between the right end surface of the second sliding block 36 and the right wall of the second sliding groove 37, a pressure relief channel 39 is arranged above the filtering channel 34, the liquid inlet of the pressure relief channel 39 is communicated with the second sliding groove 37, and the liquid outlet of the pressure relief channel 39 is communicated with the water outlet groove 33, still be provided with the check valve in the pressure release passageway 39, the check valve includes sealing spring 41 and steel ball 40, and sealing spring 41 sets up in the check valve, and sealing spring 41's top is connected with steel ball 40, and filtering channel 34 right-hand member is provided with dull and stereotyped 42, and dull and stereotyped 42's left end face has set firmly steel needle 43, and dull and stereotyped 42 right-hand member is connected with dead lever 44, and dull and stereotyped 42 is fixed in out basin 33 bottom through dead lever 44, and intake chamber 32 bottom is connected with trapway 45. The model of the flow sensor 14 is FPR100, the filtering channel 34 is vertically arranged in the transverse direction, so that impurities filtered by the filtering net 45 are deposited at the bottom of the water inlet tank 42 under the action of gravity, when meshes of the filtering net 42 are blocked, the brine slowly flows to increase the pressure, the filtering net 42 is pushed to move rightwards under the action of brine pressure, the fourth sliding block 46 is driven to slide in the fourth sliding groove 47 and compress the telescopic spring 48, the filtering net 45 is in contact with the flat plate 52, the steel needle 53 pushes out the impurities in the filtering net 45, meanwhile, the pressure relief channel 49 is opened, under the action of brine pressure, the steel column 50 moves downwards to compress the sealing spring 51, the water inlet tank 42 is communicated with the water outlet tank 43, the brine in the water inlet tank 42 flows into the water outlet tank 43 through the pressure relief channel 49, the brine pressure is reduced, the filtering net 45 returns to the initial position under the action of the elastic force of the telescopic spring 48 and pushes the impurities into the bottom end of the water inlet tank 42, when the impurities are deposited to a certain amount, they are discharged through the trapway 55.
In order to discharge the salt water accumulated in the freezing pipe after the construction is finished, an air compressor 3 is further connected to the water inlet main pipe 26. The brine accumulated in the freezing pipe 4 can be blown into the brine tank 2 by the air compressor 3.
In order to meet different pipeline connection modes during freezing construction and unfreezing construction, further, during freezing construction, the water inlet hole 12 is connected with the nitrogen storage vehicle 1 through the water inlet main pipe 26 and the water inlet branch pipe 27, the water outlet hole 13 is connected with the exhaust pipe, and the upper port of the exhaust pipe is at least 2m away from the ground. The upper port of the exhaust pipe is higher, so that the nitrogen can be prevented from frostbite operators; during thawing construction, the water inlet 12 is connected with the hydraulic pump 6 through the water inlet main pipe 26 and the water inlet branch pipe 27, and the water outlet 13 is connected with the brine tank 2 through the water outlet main pipe 28 and the water outlet branch pipe 29. The water inlet pipeline and the water outlet pipeline are connected with the brine tank 2, so that the purpose of recycling brine is achieved, and the thawing cost is saved.
The working principle is as follows: when freezing operation is required, the water inlet main pipe 26 is connected with the nitrogen storage vehicle 1, the water inlet 12 is connected with the water inlet branch pipe 27, the exhaust pipe is connected with the water outlet 13, at the moment, a valve of the nitrogen storage vehicle 1 is opened, liquid nitrogen flows into the freezing pipe 4 through the water inlet main pipe 26, the water inlet branch pipe 27, the filtering device, the water inlet 12 and the liquid supply pipe 8 in sequence, soil is frozen, and gasified nitrogen after sufficient heat exchange is discharged into the atmosphere through the liquid outlet pipe 9, the water outlet 13 and the exhaust pipe in sequence;
when the thawing operation is required, the water inlet main pipe 26 is adjusted to be connected with the hydraulic pump 6, meanwhile, the exhaust pipe is taken down, the water outlet branch pipe 29 is connected with the water outlet hole 13, the water outlet main pipe 28 is connected with the brine tank 2, the heater 7 is turned on to heat the brine, the hydraulic pump 6 is started after the temperature of the brine is raised, the hot brine flows into the water inlet tank 32 through the water inlet main pipe 26 and the water inlet branch pipe 27 in sequence under the action of the hydraulic pump 6, because the filtering channel 34 is transversely arranged, the liquid passes through the filtering action of the filtering net 35, impurities in the liquid are deposited at the bottom of the water inlet tank 32 under the action of gravity to avoid mesh blockage, the filtered liquid flows into the water inlet hole 12 through the water outlet tank 33, the flow sensor 14 at the bottom end of the water inlet hole 12 detects the flow rate of the liquid, when the flow at the positive rotation position of the water inlet 12 exceeds a set value, the motor 22 is controlled and the ellipsoid 24 is driven by the rotating shaft 23 to rotate, the push plate 19 is pushed to move rightwards, so that the push rod 18 pushes the first sliding block 16 to move rightwards, the openings of the water inlet hole 12 and the water outlet hole 13 are reduced, the flow rate of the liquid is reduced, and the first spring 21 is compressed; similarly, when the flow of inlet opening 12 department is less than the setting value, control motor 22 reversal and drive ellipsoid 24 through axis of rotation 23 and rotate, push pedal 19 moves left under the effect of first spring 21, and drive first slider 16 and move left through push rod 18, make inlet opening 12 and apopore 13 opening increase, thereby accelerate the liquid velocity of flow, the stability of liquid velocity of flow has been guaranteed, the liquid after the velocity of flow is stabilized flows into the freezing pipe by feed pipe 8, unfreeze the soil body, the liquid that carries out the overheat exchange is by drain pipe 9, apopore 13, go out liquid branch pipe 29, go out liquid main pipe 28 and get back to brine tank 2 again, the cyclic utilization of salt solution has been realized. Meanwhile, the water inlet 12 and the water outlet 13 are both connected with the flow sensor 14, when the difference between the flow rates of the two positions is too large, the leakage occurs at the position of the freezing pipe 4, the motor 22 is controlled to rotate to seal the water inlet 12 and the water outlet 13, the buzzer 25 is started to give an alarm, and an operator is reminded that the leakage exists in the freezing pipe 4. After thawing, the air compressor 3 is started to press out the residual brine in the freezing pipe 4.
The invention has the beneficial effects that:
1. according to the freezing and reinforcing curtain device capable of preventing leakage, provided by the invention, as the water in the brine heating process is evaporated, the brine is supersaturated, and the salt in the brine is crystallized and separated out to form impurities, and the filtering device is arranged at the water inlet end of the control mechanism, and the filtering effect of the filtering device is utilized, so that the condition that the impurities block the automatic adjusting device and the liquid supply pipe in the brine circulation process is effectively avoided.
2. According to the freezing reinforcement curtain device capable of preventing leakage, provided by the invention, through comparing the rotation speed difference between the two ends of the water inlet hole and the water outlet hole of the control mechanism, when the rotation speed difference is too large, the freezing pipe is indicated to be leaked, at the moment, the water inlet hole is automatically closed to prevent brine leakage, and meanwhile, the motor is controlled to rotate forwards or backwards through the rotation speed of the water inlet hole, and the ellipsoid is driven to rotate to push the first sliding block to move, so that the size of the opening of the water inlet hole is controlled, and the effect of stabilizing the liquid flow is achieved.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not intended to be limited to the specific embodiments disclosed herein, but other embodiments falling within the scope of the appended claims are intended to be within the scope of the present invention.
Claims (7)
1. A freezing reinforcement curtain device capable of preventing leakage is characterized in that: comprises a nitrogen storage vehicle (1), a brine tank (2), freezing pipes (4), a control mechanism (5), a hydraulic pump (6) and a heater (7), wherein the valve of the brine tank (2) is provided with the hydraulic pump (6), the heater (7) is arranged in the brine tank (2), a plurality of freezing pipes (4) are transversely arranged to form a freezing pipe row, the freezing pipe row is longitudinally provided with three rows, the liquid inlet end of each freezing pipe (4) is connected with a water inlet branch pipe (27), the other end of each water inlet branch pipe (27) is connected with a water inlet main pipe (26), the water inlet main pipe (26) is connected with the nitrogen storage vehicle (1) or the hydraulic pump (6), the liquid outlet end of each freezing pipe (4) is connected with a water outlet branch pipe (29), and the other end of each water outlet branch pipe (29) is connected with a water outlet main pipe (28), the water outlet main pipe (28) is connected with the brine tank (2), so that a plurality of freezing pipes (4) are connected in parallel, a sealing block (15) is arranged at the pipe orifice of the freezing pipe (4), a freezing cover plate (10) is arranged on the sealing block (15), a liquid supply pipe (8) and a liquid outlet pipe (9) are fixedly arranged on the freezing cover plate (10), the liquid supply pipe (8) penetrates through the sealing block (15), the liquid supply pipe (8) extends to the bottom of the freezing pipe (4), the liquid outlet pipe (9) penetrates through the sealing block (15), the lower end of the liquid outlet pipe (9) is flush with the bottom surface of the sealing block (15), the control mechanism (5) is arranged above the freezing cover plate (10), a water inlet hole (12) and a water outlet hole (13) are vertically formed in the control mechanism (5), and the water inlet hole (12) is connected with the liquid supply pipe (8), the water outlet hole (13) is connected with the liquid outlet pipe (9), and a filtering device is arranged above the water inlet hole (12);
the control mechanism comprises a flow sensor (14), two adjusting components and a motor (22), a transmission cavity (20) is formed between the water inlet hole (12) and the water outlet hole (13), the motor (22) is embedded at the bottom of the transmission cavity (20), an ellipsoid (24) is fixedly arranged at the top end of an output shaft (23) of the motor (22), the adjusting components are symmetrically arranged on two sides of the transmission cavity (20), each adjusting component comprises a first sliding block (16), a push rod (18), a push plate (19) and a first spring (21), the first sliding block (16) is arranged in a first sliding groove (17), the first sliding groove (17) is located in the right wall of the water inlet hole (12), the push rod (18) is slidably arranged between the transmission cavity (20) and the first sliding groove (17), one end of the push rod (18) is fixedly connected with the first sliding block (16), the other end of push rod (18) is fixed with push plate (19), push plate (19) with be provided with between transmission chamber (20) the inner wall first spring (21) just first spring (21) cover is located on push rod (18), transmission chamber (20) bottom is inlayed motor (22), motor (22) axis of rotation top be provided with push plate (19) matched with ellipsoid (24).
2. A refrigerated reinforced drapery unit capable of preventing leaks according to claim 1, wherein: the transverse interval between the adjacent freezing pipes (4) is 0.8m, the vertical interval is 1m, and the length of the freezing pipes (4) in the middle row is shorter than that of the freezing pipes (4) in the adjacent rows.
3. A refrigerated reinforced drapery unit capable of preventing leaks according to claim 1, wherein: the control mechanism (5) is further provided with a buzzer (25), and the buzzer (25) is connected with the flow sensor (14).
4. A refrigerated reinforced drapery unit capable of preventing leaks according to claim 1, wherein: the outer layers of the water inlet main pipe (26), the water outlet main pipe (28), the water inlet branch pipe (27) and the water outlet branch pipe (29) are all wrapped with heat-insulating layers, and each heat-insulating layer comprises 1 layer of rubber heat-insulating pipe and 2 layers of sealing films.
5. A refrigerated reinforced drapery unit capable of preventing leaks according to claim 1, wherein: the filtering device comprises a filtering block (31), a filtering net (35) and a flat plate (42), wherein a water inlet groove (32) is formed in the upper end face of the filtering block (31), a water outlet groove (33) is formed in the lower end face of the filtering block (31), the water inlet groove (32) is connected with the water outlet groove (33) through a filtering channel (34), a second sliding groove (37) is formed in the top wall of the filtering channel (34), the filtering net (35) is vertically arranged in the filtering channel (34), a second sliding block (36) is fixed at the upper end of the filtering net (35), the second sliding block (36) is arranged in the second sliding groove (37) in a sliding manner, a second spring (38) is arranged between the right end face of the second sliding block (36) and the right wall of the second sliding groove (37), a pressure relief channel (39) is formed above the filtering channel (34), and a liquid inlet of the pressure relief channel (39) is communicated with the second sliding groove (37), pressure release passageway (39) liquid outlet with go out basin (33) intercommunication, still be provided with the check valve in pressure release passageway (39), the check valve includes sealing spring (41) and steel ball (40), sealing spring (41) set up in the check valve, the top of sealing spring (41) is connected with steel ball (40), it is provided with to filter passageway (34) right-hand member dull and stereotyped (42), the left end face of dull and stereotyped (42) has set firmly steel needle (43), the right-hand member of dull and stereotyped (42) is connected with dead lever (44), just dull and stereotyped (42) pass through dead lever (44) are fixed in out basin (33) bottom, intake antrum (32) bottom is connected with disposal channel (45).
6. A refrigerated reinforced drapery unit capable of preventing leaks according to claim 1, wherein: and the water inlet main pipe (26) is also connected with an air compressor (3).
7. A refrigerated reinforced drapery unit capable of preventing leaks according to claim 1, wherein: the water inlet hole (12) is connected with the nitrogen storage vehicle (1) through a water inlet main pipe (26) and a water inlet branch pipe (27), the water outlet hole (13) is connected with an exhaust pipe, and an upper port of the exhaust pipe is at least 2m away from the ground;
or the water inlet hole (12) is connected with the hydraulic pump (6) through a water inlet main pipe (26) and a water inlet branch pipe (27), and the water outlet hole (13) is connected with the brine tank (2) through a water outlet main pipe (28) and a water outlet branch pipe (29).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110150943.2A CN112855174B (en) | 2021-02-03 | 2021-02-03 | Freezing reinforcement curtain device capable of preventing leakage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110150943.2A CN112855174B (en) | 2021-02-03 | 2021-02-03 | Freezing reinforcement curtain device capable of preventing leakage |
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| Publication Number | Publication Date |
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| CN112855174A CN112855174A (en) | 2021-05-28 |
| CN112855174B true CN112855174B (en) | 2022-06-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SU1229256A1 (en) * | 1984-12-21 | 1986-05-07 | Московский Ордена Трудового Красного Знамени Текстильный Институт Им.А.Н.Косыгина | Method of thermal consolidation of soil body |
| CN103088810B (en) * | 2013-02-06 | 2015-04-01 | 徐州市城市轨道交通有限责任公司 | Freezing pipe capable of exhausting air |
| CN203847125U (en) * | 2013-12-04 | 2014-09-24 | 宏润建设集团股份有限公司 | Hot brine circulating and brine blowing system for freezing stopping pipe pulling for subway shield tunnels |
| CN204000835U (en) * | 2014-05-29 | 2014-12-10 | 宏润建设集团股份有限公司 | Freezing unit for horizontal freezing soil mass consolidation |
| CN111535814B (en) * | 2020-05-07 | 2022-08-19 | 中国建筑第二工程局有限公司 | Precise stratum freezer and operation method thereof |
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