CN113467538A - Multi-mode coordinated cooling control system and method for shield tunneling machine - Google Patents
Multi-mode coordinated cooling control system and method for shield tunneling machine Download PDFInfo
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- CN113467538A CN113467538A CN202110581845.4A CN202110581845A CN113467538A CN 113467538 A CN113467538 A CN 113467538A CN 202110581845 A CN202110581845 A CN 202110581845A CN 113467538 A CN113467538 A CN 113467538A
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- 238000001816 cooling Methods 0.000 title claims abstract description 128
- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000005641 tunneling Effects 0.000 title claims abstract description 18
- 238000005057 refrigeration Methods 0.000 claims abstract description 73
- 238000004891 communication Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 91
- 239000003507 refrigerant Substances 0.000 claims description 31
- 239000007788 liquid Substances 0.000 claims description 29
- 238000009530 blood pressure measurement Methods 0.000 claims description 18
- 230000002159 abnormal effect Effects 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 239000003921 oil Substances 0.000 description 29
- 238000010586 diagram Methods 0.000 description 6
- 239000010720 hydraulic oil Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 230000001050 lubricating effect Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
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- 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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
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Abstract
The invention provides a multi-mode coordinated cooling control system and a multi-mode coordinated cooling control method for a shield tunneling machine, wherein the system comprises a control module, a temperature acquisition module, a frequency converter, a first cooling unit and a second cooling unit; the control module is in communication connection with the temperature acquisition module, the refrigeration equipment in the second cooling unit and the frequency converter respectively; the frequency converter is in communication connection with the first cooling unit; the temperature acquisition module is arranged in the oil tank to be cooled and used for acquiring the temperature in the oil tank; the control module acquires the temperature acquired by the temperature acquisition module; comparing the temperature value with a preset temperature initial value, and controlling the working mode of the frequency converter according to the comparison result; based on the multi-mode coordination cooling control system of the shield machine, the multi-mode coordination cooling control method of the shield machine is also provided. The invention uses the temperature sensor to adopt the temperature signal, and selects the corresponding working mode of the cooling system according to the difference value of the actual temperature value and the set value, so as to play the best cooling effect.
Description
Technical Field
The invention belongs to the technical field of tunnel construction temperature control, and particularly relates to a multi-mode coordinated cooling control system and method for a shield tunneling machine.
Background
The shield machine is a large tunnel construction device integrating machinery, hydraulic pressure and photoelectricity. The shield method has the advantages of safety, reliability, high mechanization degree, good environment, high working efficiency and the like in tunnel construction, however, in the normal working process of the shield machine, a hydraulic and lubricating system of the shield machine can generate a large amount of heat energy in the process of converting pressure into mechanical energy, and the oil temperature and the ambient temperature can be increased. Excessive temperatures can affect the normal operation of the machine and also reduce the useful life of the components, so that effective measures must be taken to cool them in time.
Because the factors influencing the temperature rise are various, the traditional cooling system has a single control mode, and the ideal cooling effect is difficult to achieve.
Disclosure of Invention
In order to solve the technical problem, the invention provides a multi-mode coordinated cooling control system and method for a shield machine, which select a corresponding working mode of a cooling system according to a difference value between an actual temperature value and a set value so as to achieve an optimal cooling effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
a multi-mode coordinated cooling control system of a shield tunneling machine comprises a control module, a temperature acquisition module, a frequency converter, a first cooling unit and a second cooling unit;
the control module is in communication connection with the temperature acquisition module, the refrigeration equipment in the second cooling unit and the frequency converter respectively; the frequency converter is in communication connection with the first cooling unit;
the temperature acquisition module is arranged in the oil tank to be cooled and used for acquiring the temperature in the oil tank; the control module acquires the temperature acquired by the temperature acquisition module; comparing the temperature value with a preset temperature initial value, and controlling the working mode of the frequency converter according to the comparison result; the working mode of the frequency converter comprises working according to the current rotating speed, increasing the rotating speed of the frequency converter to start the first cooling unit to carry out water circulation cooling and carrying out water circulation cooling by the second cooling unit.
Further, the first cooling unit comprises a plurality of cooling circulating pipelines and a refrigeration water tank; each cooling circulating pipeline is connected with the refrigerating water tank in series, so that the temperature of high-temperature water is reduced after the high-temperature water passes through the refrigerating water tank.
Further, the cooling circulating pipeline comprises a water pump, a one-way valve, a ball valve and a pressure gauge which are connected in series;
the water pump is used for conveying refrigerating liquid in the refrigerating water tank;
the one-way valve is used for controlling the flowing direction of the liquid in the cooling circulating pipeline;
the ball valve is used for cutting off, distributing or changing the flowing direction of the liquid in the cooling circulating pipeline;
the pressure gauge is used for measuring the pressure inside the cooling circulating pipeline.
Further, the second cooling unit comprises a refrigeration device, a stop valve and a refrigeration cycle pipeline;
the refrigeration equipment is connected with the refrigeration water tank in series through a refrigeration circulating pipeline, and the temperature of liquid in the refrigeration circulating pipeline is reduced through the refrigeration water tank; the refrigeration water tank is also provided with a stop valve for providing a water replenishing pipeline for the refrigeration water tank.
Further, the refrigeration circulating pipeline comprises a water pump, a one-way valve, a ball valve and a pressure gauge which are connected in series;
the water pump is used for conveying refrigerating liquid in the refrigerating water tank;
the one-way valve is used for controlling the flow direction of liquid in the refrigeration circulating pipeline;
the ball valve is used for cutting off, distributing or changing the flow direction of liquid in the refrigeration cycle pipeline;
the pressure gauge is used for measuring the pressure inside the refrigeration cycle pipeline.
Furthermore, the refrigeration equipment comprises main refrigeration equipment and preparation refrigeration equipment, and the main refrigeration equipment and the preparation refrigeration equipment both adopt air-cooled screw type water chilling units.
Further, the refrigeration equipment comprises an evaporator 31, a throttle valve 32, a drying filter 33, a condenser 34, a screw compressor 311, a cooling fan 312, a pressure measurement control device and a secondary refrigerant inlet and outlet device; the pressure measurement control device comprises a high-pressure measurement control device and a low-pressure measurement control device;
the evaporator 31, the dry filter 33, the condenser 34 and the screw compressor 311 are connected in series; the evaporator 31 is provided with a secondary refrigerant inlet and outlet device; a high-pressure measurement control device is arranged inside the screw compressor 311, and a low-pressure measurement control device is arranged outside the screw compressor 311; a cooling fan 312 is arranged on the condenser 34; a throttle valve 32 is provided between the evaporator 31 and the dry filter 33.
Further, the working process of the refrigeration equipment is as follows: the state of the refrigerant coming out of the evaporator 31 is a gas refrigerant, then the refrigerant is changed into a high-temperature and high-pressure state through adiabatic compression by the screw compressor 311, then the refrigerant is changed into a liquid refrigerant after being cooled in the condenser 34, and the refrigerant is expanded to a low pressure by the throttle valve 32 to be changed into a gas-liquid mixture, wherein the liquid refrigerant in the low-pressure state is changed into a gas refrigerant again in the evaporator 31; the gaseous refrigerant re-enters the screw compressor 311 to form a circulation process.
A multi-mode coordination cooling control method of a shield machine is realized based on a multi-mode coordination cooling control system of the shield machine, and comprises the following steps:
setting a preset temperature initial value T in an oil tank in a hydraulic systemPreset value；
Acquiring a current temperature value T (t) in the oil tank through a temperature sensor; judging the current temperature value T (T) and a preset temperature initial value TPreset valueThe magnitude relationship between them; if T (T) < TPreset valueIf so, the hydraulic system waterway circulation cooling process is carried out according to the current working mode; if T (T) > TPreset valueAnd controlling the frequency converter to accelerate and quicken the waterway circulation.
Further, the method further comprises:
judging the temperature value at the moment T (T +1) and the temperature value at the moment T (T), and if T (T +1) < T (T), carrying out the waterway circulation cooling process of the hydraulic system according to the current working mode; if T (T +1) > T (T), starting the main refrigeration equipment to quickly cool the circulating water, thereby achieving the purpose of reducing the oil temperature;
judging the temperature value at the T (T +2) moment and the temperature value at the T (T +1) moment, and if T (T +2) is less than T (T +1), performing the waterway circulating cooling process of the hydraulic system according to the current working mode; if T (T +2) > T (T +1), the preparation refrigeration equipment is started, an early warning of overhigh oil temperature is sent out, and abnormal inspection is carried out.
The effect provided in the summary of the invention is only the effect of the embodiment, not all the effects of the invention, and one of the above technical solutions has the following advantages or beneficial effects:
the invention provides a multi-mode coordinated cooling control system and a multi-mode coordinated cooling control method for a shield tunneling machine, wherein the system comprises a control module, a temperature acquisition module, a frequency converter, a first cooling unit and a second cooling unit; the control module is in communication connection with the temperature acquisition module, the refrigeration equipment in the second cooling unit and the frequency converter respectively; the frequency converter is in communication connection with the first cooling unit; the temperature acquisition module is arranged in the oil tank to be cooled and used for acquiring the temperature in the oil tank; the control module acquires the temperature acquired by the temperature acquisition module; comparing the temperature value with a preset temperature initial value, and controlling the working mode of the frequency converter according to the comparison result; the working mode of the frequency converter comprises working according to the current rotating speed, increasing the rotating speed of the frequency converter to start the first cooling unit to carry out water circulation cooling and carrying out water circulation cooling by the second cooling unit. Based on the multi-mode coordination cooling control system of the shield machine, the multi-mode coordination cooling control method of the shield machine is also provided. The invention uses the temperature sensor to adopt the temperature signal, and selects the corresponding working mode of the cooling system according to the difference value of the actual temperature value and the set value, so as to play the best cooling effect.
The refrigeration equipment comprises a main refrigeration equipment and a slave refrigeration equipment, and when one main refrigeration machine fails or is difficult to achieve the required cooling effect in the working process, the other slave refrigeration machine is started to work. Firstly, temperature sensors in each system acquire internal temperature values, the internal temperature values are compared with temperature set values, a frequency converter is controlled according to the comparison result, and if the temperature is within an allowable range, the frequency converter continues to work according to the current mode; if the temperature is higher than the preset value, the frequency converter is controlled to automatically increase the speed, the waterway circulation is accelerated, and the heat exchange efficiency of the system is improved; if the temperature of the system continues to rise, the refrigerating machine is started, the characteristics of slow natural cooling and poor effect are effectively relieved, the circulating water is cooled rapidly, the purpose of cooling the equipment is achieved, and the temperature is cooled to the set value range finally through continuous adjustment. The intelligent adjustment is realized, the temperature is adjusted to the optimal state, and an abnormal alarm is given out when the oil temperature is too high, so that the safety of equipment is improved.
Drawings
Fig. 1 is a schematic structural diagram of a hydraulic system water circuit circulation refrigeration system according to embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a multi-mode coordinated cooling control system of a shield tunneling machine according to embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of a refrigeration apparatus according to embodiment 1 of the present invention;
fig. 4 is a flowchart of a multi-mode coordinated cooling control method for a shield tunneling machine according to embodiment 2 of the present invention;
in addition: 11. the device comprises a pressure gauge, 12 ball valves, 13 one-way valves, 14 cutter head waterway circulating water pumps with rated power of 7.5kW, 15 waterway circulating water pumps of an inner sealing system and a lubricating system with rated power of 11kW, 16 waterway circulating water pumps of an outer sealing system and a hydraulic system with rated power of 11kW, 17 stop valves, 18 external circulating system circulating water pumps with rated power of 45 kW;
31. the system comprises an evaporator, a throttle valve 32, a drying filter 33, a condenser 34, a screw compressor 311, a cooling fan 312, a high-pressure controller 39, a high-pressure gauge 310, a low-pressure gauge 37, a low-pressure controller 38, a refrigerating medium outlet 35 and a refrigerating medium inlet 36.
Detailed Description
In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and procedures are omitted so as to not unnecessarily limit the invention.
Example 1
The embodiment 1 of the invention provides a multi-mode coordinated cooling control system of a shield machine, and fig. 2 is a schematic structural diagram of the multi-mode coordinated cooling control system of the shield machine in the embodiment 1 of the invention. The system comprises a control module, a temperature acquisition module, a frequency converter, a first cooling unit and a second cooling unit;
the control module is in communication connection with the temperature acquisition module, the refrigeration equipment in the second cooling unit and the frequency converter respectively; the frequency converter is in communication with the first cooling unit.
The control module adopts a PLC control module, and the control module is in communication connection with the temperature acquisition module, the refrigeration equipment in the second cooling unit and the frequency converter respectively, so that remote communication can be adopted.
The temperature acquisition module is arranged in the oil tank to be cooled and used for acquiring the temperature in the oil tank; in embodiment 1 of the present invention, 3 temperature sensors are provided. The control module acquires the temperature acquired by the temperature acquisition module; comparing the temperature value with a preset temperature initial value, and controlling the working mode of the frequency converter according to the comparison result; the working mode of the frequency converter comprises working according to the current rotating speed, increasing the rotating speed of the frequency converter to start the first cooling unit to carry out water circulation cooling and carrying out water circulation cooling by the second cooling unit.
Fig. 1 is a schematic structural diagram of a hydraulic system water circuit circulation refrigeration system according to embodiment 1 of the present invention; the hydraulic system water path circulation is used as a branch of an internal circulation water system, the internal circulation water cooled by the external circulation water through the cooling water tank is pumped to the position near a hydraulic oil tank by the hydraulic system water path circulation water pump, and the hydraulic oil circulated in the oil tank exchange heat through the plate type heat exchange fins, so that the heat of the hydraulic oil is taken away, and the oil temperature is reduced.
The first cooling unit is the internal circulation water system in embodiment 1 of the present invention, and the second cooling unit is the external circulation water system in embodiment 1 of the present invention.
The first cooling unit comprises a plurality of cooling circulating pipelines and a refrigeration water tank; each cooling circulating pipeline is connected with the refrigerating water tank in series, so that the temperature of high-temperature water is reduced after the high-temperature water passes through the refrigerating water tank. Namely three circulating water pumps (11kW, 7.5kW) and one cooling water tank (10000L) in fig. 1, each of which is independent.
The cooling circulation pipeline of each circulation water pump comprises a water pump, a one-way valve, a ball valve and a pressure gauge which are connected in series; the water pump is used for conveying refrigerating liquid in the refrigerating water tank; the one-way valve is used for controlling the flowing direction of the liquid in the cooling circulating pipeline; the ball valve is used for cutting off, distributing or changing the flowing direction of the liquid in the cooling circulating pipeline; the pressure gauge is used for measuring the pressure inside the cooling circulating pipeline.
In fig. 1, 11 is a pressure gauge; 12 is a ball valve; 13 is a one-way valve; 14 is a cutter head waterway circulating water pump with the rated power of 7.5 kW; 15 is a waterway circulating water pump of an internal sealing system and a lubricating system with the rated power of 11 kW; 16 is an external sealing system and a hydraulic system waterway circulating water pump with the rated power of 11 kW; 17 is a stop valve; 18 is an external circulation system circulating water pump with the rated power of 45 kW.
Three circulating water pumps respectively control the waterway circulation of the cutter head motor, the waterway circulation of the outer sealing system and the hydraulic system, the waterway circulation of the inner sealing system and the waterway circulation of the lubricating system, so that the temperature of high-temperature water is reduced after the high-temperature water passes through the heat exchanger.
The second cooling unit is an external circulation system, the external circulation system mainly comprises a 45KW circulating water pump, the 45KW circulating water pump and a cooling water pool outside the tunnel form external circulation, a cooling tower is required to be equipped to reduce the temperature of the external circulating water, and heat generated by the internal circulation system is taken away through a heat exchanger.
The refrigeration circulating pipeline in the external circulating system comprises a water pump, a one-way valve, a ball valve and a pressure gauge which are connected in series; the water pump is used for conveying refrigerating liquid in the refrigerating water tank; the one-way valve is used for controlling the flow direction of liquid in the refrigeration circulating pipeline; the ball valve is used for cutting off, distributing or changing the flow direction of liquid in the refrigeration cycle pipeline; the pressure gauge is used for measuring the pressure inside the refrigeration cycle pipe.
The refrigeration equipment comprises main refrigeration equipment and standby refrigeration equipment, and the main refrigeration equipment and the standby refrigeration equipment both adopt air-cooled screw type water chilling units. Fig. 3 is a schematic structural diagram of a refrigeration apparatus in embodiment 1 of the present invention; comprises an evaporator 31, a throttle valve 32, a drying filter 33, a condenser 34, a screw compressor 311, a cooling fan 312, a pressure measurement control device and a refrigerating medium inlet and outlet device; the pressure measurement control device comprises a high-pressure measurement control device and a low-pressure measurement control device.
The high-pressure measurement control device comprises a high-pressure controller 39 and a high-pressure gauge 310; the low pressure measurement control device comprises a low pressure gauge 37 and a low pressure controller 38, and the coolant inlet and outlet device comprises a coolant outlet 35 and a coolant inlet 36.
The working process of the refrigeration equipment comprises the following steps: the state of the refrigerant coming out of the evaporator 31 is a gas refrigerant, then the refrigerant is changed into a high-temperature and high-pressure state through adiabatic compression by the screw compressor 311, then the refrigerant is changed into a liquid refrigerant after being cooled in the condenser 34, and the refrigerant is expanded to a low pressure by the throttle valve 32 to be changed into a gas-liquid mixture, wherein the liquid refrigerant in the low-pressure state is changed into a gas refrigerant again in the evaporator 31; the gaseous refrigerant re-enters the screw compressor 311 to form a circulation process.
Example 2
Based on the multi-mode coordinated cooling control system of the shield machine provided by the embodiment 1 of the invention, the embodiment 2 of the invention provides a multi-mode coordinated cooling control method of the shield machine. Fig. 4 is a flowchart of a multi-mode coordinated cooling control method for a shield tunneling machine according to embodiment 2 of the present invention, where the method includes the following steps:
setting a preset temperature initial value T in an oil tank in a hydraulic systemPreset value；
Acquiring a current temperature value T (t) in the oil tank through a temperature sensor; judging the current temperature value T (T) and a preset temperature initial value TPreset valueThe magnitude relationship between them; if T (T) < TPreset valueIf so, the hydraulic system waterway circulation cooling process is carried out according to the current working mode; if T (T) > TPreset valueAnd controlling the frequency converter to accelerate and quicken the waterway circulation.
The method further comprises the following steps:
judging the temperature value at the moment T (T +1) and the temperature value at the moment T (T), and if T (T +1) < T (T), carrying out the waterway circulation cooling process of the hydraulic system according to the current working mode; if T (T +1) > T (T), starting the main refrigeration equipment to quickly cool the circulating water, thereby achieving the purpose of reducing the oil temperature;
judging the temperature value at the T (T +2) moment and the temperature value at the T (T +1) moment, and if T (T +2) is less than T (T +1), performing the waterway circulating cooling process of the hydraulic system according to the current working mode; if T (T +2) > T (T +1), the preparation refrigeration equipment is started, an early warning of overhigh oil temperature is sent out, and abnormal inspection is carried out.
Generally, the oil temperature of a hydraulic system is not more than 65 ℃, the oil temperature of a lubricating system is not more than 60 ℃, and when the temperature is more than 60 ℃, the normal use of the machine is seriously influenced, the service life of mechanical elements is also shortened, and the maintenance cost of the shield machine is increased. Taking cooling of a hydraulic system as an example, the set value of the oil temperature of the hydraulic system is 60 ℃, the temperature sensor takes the oil temperature of the hydraulic system in real time, the oil temperature is compared with the set value of the oil temperature, T (t) is set as the oil temperature of the hydraulic system measured by the temperature sensor at the moment t, and the control process of the cooling system is as follows:
if T (t) is less than 60 ℃, the hydraulic system waterway circulating cooling process is carried out according to the current working mode; if T (t) is more than 60 ℃, controlling the frequency converter to automatically increase the speed and quickening the waterway circulation.
If T (T +1) < T (T), the waterway circulation cooling process of the hydraulic system is carried out according to the current working mode; if T (T +1) > T (T), the refrigerating machine is started to rapidly cool the circulating water, so that the aim of reducing the oil temperature is fulfilled.
If T (T +2) < T (T +1), the hydraulic system waterway circulation cooling process is carried out according to the current working mode; and if T (T +2) > T (T +1), starting the standby refrigerating machine, giving an alarm when the oil temperature is too high, and performing abnormal inspection.
The overall circulation path of the hydraulic system water circuit circulation in the control system is as follows: the hydraulic system water path circulation is used as a branch of an internal circulation water system, the internal circulation water cooled by the external circulation water through the cooling water tank is pumped to the position near a hydraulic oil tank by the hydraulic system water path circulation water pump, and the hydraulic oil circulated in the oil tank exchange heat through the plate type heat exchange fins, so that the heat of the hydraulic oil is taken away, and the oil temperature is reduced.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, the scope of the present invention is not limited thereto. Various modifications and alterations will occur to those skilled in the art based on the foregoing description. And are neither required nor exhaustive of all embodiments. On the basis of the technical scheme of the invention, various modifications or changes which can be made by a person skilled in the art without creative efforts are still within the protection scope of the invention.
Claims (10)
1. A multi-mode coordinated cooling control system of a shield tunneling machine is characterized by comprising a control module, a temperature acquisition module, a frequency converter, a first cooling unit and a second cooling unit;
the control module is in communication connection with the temperature acquisition module, the refrigeration equipment in the second cooling unit and the frequency converter respectively; the frequency converter is in communication connection with the first cooling unit;
the temperature acquisition module is arranged in the oil tank to be cooled and used for acquiring the temperature in the oil tank; the control module acquires the temperature acquired by the temperature acquisition module; comparing the temperature value with a preset temperature initial value, and controlling the working mode of the frequency converter according to the comparison result; the working mode of the frequency converter comprises working according to the current rotating speed, increasing the rotating speed of the frequency converter to start the first cooling unit to carry out water circulation cooling and carrying out water circulation cooling by the second cooling unit.
2. The multi-mode coordinated cooling control system of the shield tunneling machine according to claim 1, wherein the first cooling unit comprises a plurality of cooling circulation pipelines and a cooling water tank; each cooling circulating pipeline is connected with the refrigerating water tank in series, so that the temperature of high-temperature water is reduced after the high-temperature water passes through the refrigerating water tank.
3. The multi-mode coordinated cooling control system of the shield tunneling machine according to claim 2, wherein the cooling circulation pipeline comprises a water pump, a one-way valve, a ball valve and a pressure gauge which are connected in series;
the water pump is used for conveying refrigerating liquid in the refrigerating water tank;
the one-way valve is used for controlling the flowing direction of the liquid in the cooling circulating pipeline;
the ball valve is used for cutting off, distributing or changing the flowing direction of the liquid in the cooling circulating pipeline;
the pressure gauge is used for measuring the pressure inside the cooling circulating pipeline.
4. The multi-mode coordinated cooling control system of the shield tunneling machine according to claim 3, wherein the second cooling unit comprises a refrigeration device, a stop valve and a refrigeration cycle pipeline;
the refrigeration equipment is connected with the refrigeration water tank in series through a refrigeration circulating pipeline, and the temperature of liquid in the refrigeration circulating pipeline is reduced through the refrigeration water tank; the refrigeration water tank is also provided with a stop valve for providing a water replenishing pipeline for the refrigeration water tank.
5. The multi-mode coordinated cooling control system of the shield tunneling machine according to claim 4, wherein the refrigeration cycle pipeline comprises a water pump, a check valve, a ball valve and a pressure gauge which are connected in series;
the water pump is used for conveying refrigerating liquid in the refrigerating water tank;
the one-way valve is used for controlling the flow direction of liquid in the refrigeration circulating pipeline;
the ball valve is used for cutting off, distributing or changing the flow direction of liquid in the refrigeration cycle pipeline;
the pressure gauge is used for measuring the pressure inside the refrigeration cycle pipeline.
6. The multi-mode coordinated cooling control system of the shield tunneling machine according to claim 4, wherein the refrigeration equipment comprises a main refrigeration equipment and a spare refrigeration equipment, and the main refrigeration equipment and the spare refrigeration equipment both adopt an air-cooled screw type water chilling unit.
7. The multi-mode coordinated cooling control system of the shield tunneling machine according to claim 6, wherein the refrigeration equipment comprises an evaporator (31), a throttle valve (32), a dry filter (33), a condenser (34), a screw compressor (311), a cooling fan (312), a pressure measurement control device, a secondary refrigerant inlet and outlet device; the pressure measurement control device comprises a high-pressure measurement control device and a low-pressure measurement control device;
the evaporator (31), the drying filter (33), the condenser (34) and the screw compressor (311) are connected in series; the evaporator (31) is provided with a secondary refrigerant inlet and outlet device; a high-pressure measurement control device is arranged inside the screw compressor (311), and a low-pressure measurement control device is arranged outside the screw compressor (311); a cooling fan (312) is arranged on the condenser (34); a throttle valve (32) is arranged between the evaporator (31) and the drying filter (33).
8. The multi-mode coordinated cooling control system of the shield tunneling machine according to claim 7, wherein the work flow of the refrigeration equipment is as follows: the state of the refrigerant coming out of the evaporator (31) is a gas refrigerant, then the refrigerant is changed into a high-temperature high-pressure state through adiabatic compression by a screw compressor (311), then the refrigerant is changed into a liquid refrigerant after being cooled in a condenser (34), and the refrigerant is expanded to be low pressure by a throttle valve (32) to be changed into a gas-liquid mixture, wherein the liquid refrigerant in the low-pressure state is changed into a gas refrigerant again in the evaporator (31); the gaseous refrigerant reenters the screw compressor (311) to form a circulation process.
9. A multi-mode coordination cooling control method of a shield machine, which is implemented based on the multi-mode coordination cooling control system of the shield machine of any one of claims 1 to 8, and is characterized by comprising the following steps:
setting a preset temperature initial value T in an oil tank in a hydraulic systemPreset value；
Acquiring a current temperature value T (t) in the oil tank through a temperature sensor; judging the current temperature value T (T) and a preset temperature initial value TPreset valueThe magnitude relationship between them; if T (T) < TPreset valueIf so, the hydraulic system waterway circulation cooling process is carried out according to the current working mode; if T (T) > TPreset valueAnd controlling the frequency converter to accelerate and quicken the waterway circulation.
10. The multi-mode coordinated cooling control method of the shield tunneling machine according to claim 9, further comprising:
judging the temperature value at the moment T (T +1) and the temperature value at the moment T (T), and if T (T +1) < T (T), carrying out the waterway circulation cooling process of the hydraulic system according to the current working mode; if T (T +1) > T (T), starting the main refrigeration equipment to quickly cool the circulating water, thereby achieving the purpose of reducing the oil temperature;
judging the temperature value at the T (T +2) moment and the temperature value at the T (T +1) moment, and if T (T +2) is less than T (T +1), performing the waterway circulating cooling process of the hydraulic system according to the current working mode; if T (T +2) > T (T +1), the preparation refrigeration equipment is started, an early warning of overhigh oil temperature is sent out, and abnormal inspection is carried out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110581845.4A CN113467538A (en) | 2021-05-24 | 2021-05-24 | Multi-mode coordinated cooling control system and method for shield tunneling machine |
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| CN202110581845.4A CN113467538A (en) | 2021-05-24 | 2021-05-24 | Multi-mode coordinated cooling control system and method for shield tunneling machine |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201827626U (en) * | 2010-10-28 | 2011-05-11 | 南车资阳机车有限公司 | Lubricating system of small type shielding main bearing |
| CN204060698U (en) * | 2014-09-20 | 2014-12-31 | 辽宁三三工业有限公司 | Shield machine water cooling system |
| CN104500508A (en) * | 2014-12-08 | 2015-04-08 | 中国船舶工业系统工程研究院 | Cooling circulation system of liquid cooling equipment and cooling method |
| CN206648341U (en) * | 2017-02-23 | 2017-11-17 | 苏州市明瑞精工器材有限公司 | A kind of microwave moves hot systems |
| CN109340359A (en) * | 2018-12-18 | 2019-02-15 | 徐工集团凯宫重工南京股份有限公司 | Auto-cool system for shield owner's sliding tooth roller box lubricating oil |
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2021
- 2021-05-24 CN CN202110581845.4A patent/CN113467538A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201827626U (en) * | 2010-10-28 | 2011-05-11 | 南车资阳机车有限公司 | Lubricating system of small type shielding main bearing |
| CN204060698U (en) * | 2014-09-20 | 2014-12-31 | 辽宁三三工业有限公司 | Shield machine water cooling system |
| CN104500508A (en) * | 2014-12-08 | 2015-04-08 | 中国船舶工业系统工程研究院 | Cooling circulation system of liquid cooling equipment and cooling method |
| CN206648341U (en) * | 2017-02-23 | 2017-11-17 | 苏州市明瑞精工器材有限公司 | A kind of microwave moves hot systems |
| CN109340359A (en) * | 2018-12-18 | 2019-02-15 | 徐工集团凯宫重工南京股份有限公司 | Auto-cool system for shield owner's sliding tooth roller box lubricating oil |
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Application publication date: 20211001 |