CN111795587A - Water circulation system and working method thereof - Google Patents
Water circulation system and working method thereof Download PDFInfo
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- CN111795587A CN111795587A CN202010704609.2A CN202010704609A CN111795587A CN 111795587 A CN111795587 A CN 111795587A CN 202010704609 A CN202010704609 A CN 202010704609A CN 111795587 A CN111795587 A CN 111795587A
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- water
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- water circulation
- cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/14—Conveying liquids or viscous products by pumping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/003—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus specially adapted for cooling towers
Abstract
The invention provides a water circulation system and a working method thereof, and the water circulation system comprises a flushing water pipeline, wherein the flushing water pipeline is communicated with an equipment cooling pipeline, the equipment cooling pipeline is respectively communicated with a first water circulation pipeline and a second water circulation pipeline, the first water circulation pipeline is communicated with the second water circulation pipeline, the first water circulation pipeline and the second water circulation pipeline integrally form a first semi-closed loop water circulation control system, the second water circulation pipeline and the equipment cooling pipeline integrally form a second semi-closed loop water circulation control system, the flushing water pipeline, the first semi-closed loop water circulation control system and the second semi-closed loop water circulation control system are all connected with an upper computer, and the upper computer is connected with a main control room. The invention not only can carry out water cooling on heating equipment, but also realizes the cooling recovery of circulating water and the automatic control flushing of the multi-flushing water loop.
Description
Technical Field
The invention relates to the technical field of water circulation, in particular to a water circulation system and a working method thereof.
Background
In the tunneling process of the rectangular tunneling machine, heating sources such as a driving motor, a frequency converter and a hydraulic pump station can generate high heat and discharge the heat into the tunnel, and the temperature in the tunnel is rapidly increased after natural cooling. The water system of the traditional rectangular development machine mainly comprises components such as a water tank, a water pump, a valve body, pipelines and the like, and mainly realizes the functions of providing high-pressure water scouring and stirring blind area scouring for excavation blind areas, and each scouring pipeline is usually controlled by a manual ball valve; the patent application number is "201821511406.4", the patent name is "cooling system and have this cooling system's entry driving machine" disclose one kind and utilize the outer loop system and be used for carrying out refrigerated inner loop system to the part that generates heat, fall to normal operating range in with the temperature in the one-level water tank through the cooling tower, it can only shut down the floodgate and turn on the water to have solved current equipment when generating heat and cooling, but this water system not only can't realize carrying out host computer automatic control to each flushing line, can't carry out intelligent water cooling to the system that generates heat, and can't realize intelligent moisturizing to the water tank water level.
Disclosure of Invention
The invention provides a water circulation system and a working method thereof, and aims to solve the technical problems that a scouring water system in a rectangular tunneling machine cannot automatically control each scouring pipeline, and cannot intelligently cool and replenish water levels of a heating system and a water tank.
In order to solve the above problems, the technical solution of the present invention is realized as follows:
a water circulation system comprises a flushing water pipeline, wherein the flushing water pipeline is communicated with an equipment cooling pipeline, the equipment cooling pipeline is respectively communicated with a first water circulation pipeline and a second water circulation pipeline, the first water circulation pipeline is communicated with the second water circulation pipeline, the first water circulation pipeline and the second water circulation pipeline integrally form a first semi-closed loop water circulation control system, the second water circulation pipeline and the equipment cooling pipeline integrally form a second semi-closed loop water circulation control system, and the flushing water pipeline, the first semi-closed loop water circulation control system and the second semi-closed loop water circulation control system are all connected with an upper computer.
Preferably, it erodes branch road, spraying dust fall branch road and blind area high pressure water excavation branch road to erode the water piping way including the dregs improvement, and the dregs improvement is scoured branch road, spraying dust fall branch road and blind area high pressure water excavation branch road and all is linked together with equipment cooling pipe and the dregs improvement is scoured branch road, spraying dust fall branch road and blind area high pressure water excavation branch road and all is provided with pneumatic ball valve on the road, and pneumatic ball valve is connected with the host computer.
Preferably, the equipment cooling pipeline comprises a heating equipment cooling branch and a debugging branch, the heating equipment cooling branch is communicated with the debugging branch through a second stop valve and a first stop valve, and the heating equipment cooling branch is respectively communicated with the flushing water pipeline, the first water circulation pipeline and the second water circulation pipeline.
Preferably, a radiator is arranged on the heating equipment cooling branch, one end of the radiator is respectively communicated with the improved flushing branch, the spraying dust-settling branch and the blind area high-pressure water excavation branch in the flushing water pipeline, the water return end of the first water circulation pipeline and the water outlet end of the second water circulation pipeline, and the other end of the radiator is communicated with the water return end of the second water circulation pipeline sequentially through the second stop valve and the third stop valve.
Preferably, a flow sensor and a first thermometer are arranged at the joint of the heating equipment cooling branch and the flushing water pipeline, a second thermometer is arranged between the heating equipment cooling branch and the first and second stop valves, and the flow sensor is connected with an upper computer.
Preferably, the first water circulation pipeline comprises a cooling water tower and a water return pipeline, the cooling water tower is respectively communicated with an external water replenishing pipeline and a recovery pipeline, the water return pipeline is respectively communicated with one end of a heating equipment cooling branch in the equipment cooling pipeline and a water outlet end of the second water circulation pipeline through a pneumatic ball valve and a one-way valve, the water outlet end of the second water circulation pipeline is communicated with one end of the heating equipment cooling branch through a pneumatic ball valve, the cooling water tower is communicated with a water inlet end of the second water circulation pipeline through a water conveying pipeline, a water circulation pump and a pneumatic ball valve are arranged on the water conveying pipeline, and the water circulation pump and the pneumatic ball valve are both connected with an upper computer.
Preferably, the second water circulation pipeline comprises a water adding tank and a water adding pipeline, the water outlet end of the water adding tank is communicated with the water adding pipeline through a booster water pump, a pressure gauge, a pressure sensor and a temperature sensor are arranged on the water adding pipeline, the water adding pipeline is communicated with the water return pipeline and one end of the heating equipment cooling branch through corresponding pneumatic ball valves respectively, the water inlet end of the water adding tank is communicated with the cooling water tower through the circulating water pump and the pneumatic ball valves, the water return end of the water adding tank is communicated with the other end of the heating equipment cooling branch through a third stop valve and a second stop valve, and the water return end of the water adding tank is communicated with the debugging branch through the third stop valve and a first stop valve; and the first stop valve, the second stop valve, the third stop valve, the booster water pump, the pressure sensor, the temperature sensor, the circulating water pump and the pneumatic ball valve are all connected with an upper computer.
Preferably, be provided with high liquid level switch and low liquid level switch on the water tank, high liquid level switch and low liquid level switch all are connected with the host computer.
Preferably, a visual liquid level pipe is further arranged on the water adding tank.
A method of operating a water circulation system comprising the steps of:
s1, firstly, opening an external water replenishing pipeline to supply water for the cooling water tower, controlling a pneumatic ball valve on the water conveying pipeline to be opened by the upper computer, and simultaneously starting a circulating water pump to add water into a water adding tank;
s2, monitoring the water level change in the water adding tank through a high liquid level switch and a low liquid level switch on the water adding tank, and closing a pneumatic ball valve and a circulating water pump on a water conveying pipeline by an upper machine when the water level reaches the high liquid level; when the liquid level is lower than the height of the high liquid level switch, the pneumatic ball valve and the circulating water pump on the water conveying pipeline are controlled on site to automatically start water supplement;
s3, when the heating equipment runs, the upper computer controls a pneumatic ball valve on the first water circulation pipeline to be closed, simultaneously opens the pneumatic ball valve between the heating equipment cooling branch and the second water circulation pipeline, a second stop valve and a third stop valve, starts a booster water pump to supply water to the heating equipment cooling branch through a water adding tank, performs heat dissipation and cooling on the heating equipment through a radiator on the heating equipment cooling branch, and returns cooling water to the water adding tank to form a second group of semi-closed loop water circulation control system;
s4, monitoring the pressure and temperature change of the pressurized water in real time by a pressure gauge, a temperature sensor and a pressure sensor in the second water circulation pipeline in the step S3, when the temperature sensor detects that the temperature of the water supplied to the cooling branch of the heating equipment exceeds a set value, controlling a pneumatic ball valve between the cooling branch of the heating equipment and the second water circulation pipeline to be closed by the upper computer, opening the pneumatic ball valve on the first water circulation pipeline, discharging the circulating water into a cooling water tower through a pressurized water pump, and when the liquid level in a water adding tank is reduced, repeating the step S2 to supplement the water for the water adding tank, so as to form a first group of semi-closed loop water circulation control system;
s5, according to the step S4, when the temperature sensor detects that the temperature of the circulating water is reduced to the normal temperature of the cooling water, the pneumatic ball valve on the first water circulating pipeline is controlled to be closed through field control, the pneumatic ball valve between the cooling branch of the heating equipment and the second water circulating pipeline is opened, and the step S3 is repeated;
and S6, according to the steps S3 and S5, when the heating equipment runs, the corresponding pneumatic ball valves on the muck improvement flushing branch, the spraying dust-falling branch and the blind area high-pressure water excavation branch in the flushing water pipeline are respectively controlled to be opened to control the on-off of the muck improvement branch, the blind area high-pressure water excavation branch and the spraying dust-falling branch.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the corresponding pneumatic ball valves on the residue soil improvement scouring branch, the spraying dust-settling branch and the blind area high-pressure water excavation branch in the scouring water pipeline are respectively controlled to be opened to control the residue soil improvement, the blind area high-pressure water excavation and the spraying dust-settling branch to be switched on and off, so that the automatic control of water supply of each scouring branch is realized;
2. according to the invention, the first semi-closed loop water circulation control system is used for recovering and cooling the circulating cooling water in the second semi-closed loop water circulation control system, the temperature sensor and the pressure sensor on the second circulating pipeline are used for monitoring the water supply pressure and temperature in real time, and when the cooling water in the second semi-closed loop water circulation control system exceeds a certain temperature, the first semi-closed loop water circulation control system is used for introducing the cooling water into the cooling water tower for cooling and recovering, so that the second semi-closed loop water circulation control system is convenient for water cooling circulation of the heating equipment again;
3. in the second semi-closed loop water circulation control, once the water level of the water adding tank is lower than the height of the high liquid level switch, the upper computer controls the opening of a circulating water pump and a pneumatic ball valve on a circulating pipeline to supplement water in the water adding tank, so that the water level in the water adding tank meets the requirement of cooling circulation;
4. according to the invention, the water inlet and the water outlet of the radiator are respectively provided with the group of thermometers, so that workers can conveniently observe the temperature difference change of cooling water; meanwhile, a flow sensor is arranged at the water inlet end of the flushing pipeline and used for monitoring the water flow of the flushing pipeline, so that the accurate control of the water supply speed of the flushing pipeline is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the present invention.
In the figure, 1 is a pressure gauge, 2 is a pneumatic ball valve, 5 is a flow sensor, 6 is a first thermometer, 7 is a radiator, 8 is a filter, 11 is a one-way valve, 12 is a pressure sensor, 13 is a temperature sensor, 14 is a pressure gauge, 17 is a circulating water pump, 18 is a cooling water tower, 19 is a first stop valve, 20 is a second stop valve, 21 is a third stop valve, 22 is a booster water pump, 23 is a visual liquid level pipe, 24 is a water adding tank, 25 is a low liquid level switch, and 26 is a high liquid level switch.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Example 1: as shown in fig. 1, a water circulation system includes a flushing water pipeline, the flushing water pipeline is communicated with an equipment cooling pipeline, the equipment cooling pipeline is respectively communicated with a first water circulation pipeline and a second water circulation pipeline, the first water circulation pipeline is communicated with the second water circulation pipeline, the first water circulation pipeline and the second water circulation pipeline integrally form a first semi-closed loop water circulation control system, the second water circulation pipeline and the equipment cooling pipeline integrally form a second semi-closed loop water circulation control system, the flushing water pipeline, the first semi-closed loop water circulation control system and the second semi-closed loop water circulation control system are all connected with an upper computer, the first semi-closed loop water circulation control system recovers and cools the circulating cooling water in the second semi-closed loop water circulation control system, and the temperature sensor and the pressure sensor on the second circulation pipeline are used for monitoring the water supply pressure and temperature in real time, when the cooling water in the second semi-closed loop water circulation control system exceeds a certain temperature, the first semi-closed loop water circulation control system is utilized to introduce the cooling water into the cooling tower for cooling and recycling, so that the second semi-closed loop water circulation control system is convenient for water cooling circulation of the heating equipment again.
The corresponding pneumatic ball valves on the residue soil improvement scouring branch, the spraying dust-settling branch and the blind area high-pressure water excavation branch in the scouring water pipeline are respectively controlled by the upper computer to open and control the on-off of the residue soil improvement branch, the blind area high-pressure water excavation branch and the spraying dust-settling branch, and the pneumatic ball valves are respectively controlled to control the on-off of the residue soil improvement branch, the blind area high-pressure water excavation branch, the spraying dust-settling branch and the like; the spraying dust fall can be applied to a rectangular tunneling machine with large dust, is installed in a region with large dust, and plays a role in dust fall, so that the automatic control of water supply of each flushing branch is realized, and the secondary cooling circulation use of water cooling and circulating water for heating equipment is realized.
The washing water pipeline includes that the dregs improvement erodees the branch road, spraying dust fall branch road and blind area high pressure water excavation branch road, the dregs improvement erodees the branch road, spraying dust fall branch road and blind area high pressure water excavation branch road all are linked together with equipment cooling pipeline and the dregs improvement erodees the branch road, all be provided with pneumatic ball valve 2 on spraying dust fall branch road and the blind area high pressure water excavation branch road, the dregs improvement erodees the branch road, spraying dust fall branch road and blind area high pressure water excavation branch road all are provided with manometer 1, water pressure change when being convenient for look over erodeing through each branch road manometer 1, pneumatic ball valve 2 is connected with the host computer.
The equipment cooling pipeline comprises a heating equipment cooling branch and a debugging branch, the heating equipment cooling branch is communicated with the debugging branch through a second stop valve 20 and a first stop valve 19, and the heating equipment cooling branch is respectively communicated with the flushing water pipeline, the first water circulation pipeline and the second water circulation pipeline.
The heating equipment cooling branch is provided with a radiator 7, one end of the radiator 7 is respectively communicated with an improved flushing branch, a spraying dust-settling branch and a blind area high-pressure water excavation branch in a flushing water pipeline, a water return end of a first water circulation pipeline and a water outlet end of a second water circulation pipeline, and the other end of the radiator 7 is communicated with a water return end of the second water circulation pipeline sequentially through a second stop valve 20 and a third stop valve 21.
A flow sensor 5 and a first thermometer 6 are arranged at the joint of the heating equipment cooling branch and the flushing water pipeline, a second thermometer is arranged between the heating equipment cooling branch and a second stop valve 20, the flow sensor 5 is connected with an upper computer, and a group of thermometers are respectively arranged at a water inlet and a water outlet of the radiator, so that a worker can conveniently observe the change of the cooling water temperature difference; meanwhile, a flow sensor is arranged at the water inlet end of the flushing pipeline and used for monitoring the water flow of the flushing pipeline, so that the accurate control of the water supply speed of the flushing pipeline is facilitated.
The first water circulation pipeline comprises a cooling water tower 18 and a water return pipeline, the cooling water tower 18 is respectively communicated with an external water replenishing pipeline and a recovery pipeline, the water return pipeline is respectively communicated with one end of a heating equipment cooling branch in the equipment cooling pipeline and the water outlet end of a second water circulation pipeline through a pneumatic ball valve 2 and a one-way valve 11, the water outlet end of the second water circulation pipeline is communicated with one end of the heating equipment cooling branch through a pneumatic ball valve 2, a filter is arranged between the pneumatic ball valve and one end of the heating equipment cooling branch and used for filtering circulating water, the cooling water tower is communicated with the water inlet end of the second water circulation pipeline through a water conveying pipeline, a circulating water pump 17 and a pneumatic ball valve 2 are arranged on the water conveying pipeline, a filter 8 is further arranged between the pneumatic ball valve and a water adding tank, the filter is used for filtering water supplied into the cooling water tower, and the circulating water pump 17 and the pneumatic ball valve.
The second water circulation pipeline comprises a water adding tank 24 and a water adding pipeline, the water outlet end of the water adding tank 24 is communicated with the water adding pipeline through a booster water pump 22, a pressure gauge 14, a pressure sensor 12 and a temperature sensor 13 are arranged on the water adding pipeline, the water adding pipeline is respectively communicated with one end of a water return pipeline and one end of a heating equipment cooling branch through corresponding pneumatic ball valves 2, the water inlet end of the water adding tank 24 is communicated with a cooling water tower 18 through a circulating water pump 17 and the pneumatic ball valves 2, the water return end of the water adding tank 24 is communicated with the other end of the heating equipment cooling branch through a third stop valve 21 and a second stop valve 20, and the water return end of the water adding tank 24 is communicated with a debugging branch through the third stop valve 21 and a first stop; the first stop valve 19, the second stop valve 20, the third stop valve 21, the booster water pump 22, the pressure sensor 12, the temperature sensor 13, the circulating water pump 17 and the pneumatic ball valve 2 are all connected with an upper computer, and the booster water pressure and temperature change conditions are monitored through the pump outlet pressure gauge 14, the temperature sensor 13 and the pressure sensor 14.
Be provided with high level switch 25 and low level switch 26 on the water feeding box, high level switch 25 and low level switch 26 all are connected with the host computer, still be provided with visual liquid level pipe 23 on the water feeding box 24, the limit liquid level of 24 internal waters of water feeding box is monitored through high level switch 26 and low level switch 25, also can watch its liquid level height through visual level gauge 23, in case of water feeding box water level is less than high level switch height in the second semi-closed loop water circulation control, circulating water pump and pneumatic ball valve on the host computer control circulation pipeline open the operation of moisturizing in the water feeding box, guarantee to add the internal water level of water feeding box and satisfy cooling cycle and use.
Example 2: as shown in fig. 1, a method for operating a water circulation system includes the following steps:
s1, firstly, opening an external water replenishing pipeline to supply water for the cooling water tower 18, controlling the pneumatic ball valve 2 on the water conveying pipeline to be opened by the upper computer, and simultaneously starting the circulating water pump 17 to add water into the water adding tank 24;
s2, monitoring the water level change in the water adding tank 24 through the high liquid level switch 26 and the low liquid level switch 25 on the water adding tank 24, and closing the pneumatic ball valve 2 and the circulating water pump 17 on the water conveying pipeline by the upper machine when the water level reaches the high liquid level; when the liquid level is lower than the height of the high liquid level switch 26, the pneumatic ball valve 2 and the circulating water pump 17 on the water conveying pipeline are controlled to automatically start water supplement;
s3, when the heating equipment runs, the upper computer controls the pneumatic ball valve 2 on the first water circulation pipeline to be closed, simultaneously opens the pneumatic ball valve 2 between the heating equipment cooling branch and the second water circulation pipeline, the second stop valve 20 and the third stop valve 21, starts the booster water pump 22 to supply water to the heating equipment cooling branch through the water adding tank 24, performs heat dissipation and cooling on the heating equipment through the radiator 7 on the heating equipment cooling branch, and returns the cooling water to the water adding tank 24, so that a second group of semi-closed loop water circulation control system is formed;
s4, monitoring the pressure and temperature change of pressurized water in real time by a pressure gauge 14, a temperature sensor 13 and a pressure sensor 12 in the second water circulation pipeline in step S3, when the temperature sensor 13 detects that the temperature of water supplied to the cooling branch of the heating equipment exceeds a set value, controlling the pneumatic ball valve 2 between the cooling branch of the heating equipment and the second water circulation pipeline to be closed by the upper computer, opening the pneumatic ball valve 2 on the first water circulation pipeline, discharging the circulating water into the cooling water tower 18 through a pressurized water pump 22, and repeating the step S2 when the liquid level in the water adding tank 24 is reduced, so as to supplement water for the water adding tank 24, thereby forming a first group of semi-closed loop water circulation control systems;
s5, according to the step S4, when the temperature sensor 13 detects that the temperature of the circulating water is reduced to the normal cooling water temperature, the pneumatic ball valve 2 on the first water circulating pipeline is controlled to be closed, the pneumatic ball valve 2 between the heating equipment cooling branch and the second water circulating pipeline is opened, and the step S3 is repeated;
and S6, according to the steps S3 and S5, when the heating equipment runs, the corresponding pneumatic ball valves 2 on the muck improvement flushing branch, the spraying dust-falling branch and the blind area high-pressure water excavation branch in the flushing water pipeline are respectively controlled to be opened to control the on-off of the muck improvement branch, the blind area high-pressure water excavation branch and the spraying dust-falling branch.
The rest of the structure is the same as in example 1.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A water circulation system comprises a flushing water pipeline and is characterized in that the flushing water pipeline is communicated with an equipment cooling pipeline, the equipment cooling pipeline is respectively communicated with a first water circulation pipeline and a second water circulation pipeline, the first water circulation pipeline is communicated with the second water circulation pipeline, the first water circulation pipeline and the second water circulation pipeline integrally form a first semi-closed loop water circulation control system, the second water circulation pipeline and the equipment cooling pipeline integrally form a second semi-closed loop water circulation control system, and the flushing water pipeline, the first semi-closed loop water circulation control system and the second semi-closed loop water circulation control system are all connected with an upper computer.
2. The water circulation system according to claim 1, wherein the flushing water pipeline comprises a residue soil improvement flushing branch, a spraying dust-settling branch and a blind area high-pressure water excavation branch, the residue soil improvement flushing branch, the spraying dust-settling branch and the blind area high-pressure water excavation branch are communicated with the equipment cooling pipeline, pneumatic ball valves (2) are arranged on the residue soil improvement flushing branch, the spraying dust-settling branch and the blind area high-pressure water excavation branch, and the pneumatic ball valves (2) are connected with an upper computer.
3. A water circulation system according to claim 1 or 2, wherein the equipment cooling circuit comprises a heat generating equipment cooling branch and a commissioning branch, the heat generating equipment cooling branch being in communication with the commissioning branch via a second stop valve (20) and a first stop valve (19) and the heat generating equipment cooling branch being in communication with the flush water circuit, the first water circulation circuit and the second water circulation circuit, respectively.
4. The water circulation system is characterized in that a radiator (7) is arranged on the heating equipment cooling branch, one end of the radiator (7) is respectively communicated with an improved flushing branch, a spraying dust-settling branch and a blind area high-pressure water excavation branch in a flushing water pipeline, the water return end of the first water circulation pipeline and the water outlet end of the second water circulation pipeline, and the other end of the radiator (7) is communicated with the water return end of the second water circulation pipeline sequentially through a second stop valve (20) and a third stop valve (21).
5. The water circulation system according to claim 4, wherein a flow sensor (5) and a first thermometer (6) are arranged at the joint of the heating equipment cooling branch and the flushing water pipeline, a second thermometer is arranged between the heating equipment cooling branch and the second stop valve (20), and the flow sensor (5) is connected with an upper computer.
6. The water circulation system according to claim 1 or 4, wherein the first water circulation pipeline comprises a cooling water tower (18) and a water return pipeline, the cooling water tower (18) is respectively communicated with an external water replenishing pipeline and a recovery pipeline, the water return pipeline is respectively communicated with one end of a heating equipment cooling branch in the equipment cooling pipeline and a water outlet end of the second water circulation pipeline through a pneumatic ball valve (2) and a one-way valve (11), the water outlet end of the second water circulation pipeline is communicated with one end of the heating equipment cooling branch through a pneumatic ball valve (2), the cooling water tower is communicated with a water inlet end of the second water circulation pipeline through a water conveying pipeline, a water circulation pump (17) and the pneumatic ball valve (2) are arranged on the water conveying pipeline, and the water circulation pump (17) and the pneumatic ball valve (2) are both connected with an upper computer.
7. The water circulation system according to claim 6, wherein the second water circulation pipeline comprises a water adding tank (24) and a water adding pipeline, the water outlet end of the water adding tank (24) is communicated with the water adding pipeline through a booster water pump (22), a pressure gauge (14) is arranged on the water adding pipeline, the water feeding pipeline is communicated with a water return pipeline and one end of a heating equipment cooling branch through corresponding pneumatic ball valves (2), the water inlet end of a water feeding tank (24) is communicated with a cooling water tower (18) through a circulating water pump (17) and the pneumatic ball valves (2), the water return end of the water feeding tank (24) is communicated with the other end of the heating equipment cooling branch through a third stop valve (21) and a second stop valve (20), and the water return end of the water feeding tank (24) is communicated with a debugging branch through the third stop valve (21) and a first stop valve (19); the first stop valve (19), the second stop valve (20), the third stop valve (21), the booster water pump (22), the pressure sensor (12), the temperature sensor (13), the circulating water pump (17) and the pneumatic ball valve (2) are connected with an upper computer.
8. The water circulation system according to claim 7, wherein the water adding tank is provided with a high liquid level switch (25) and a low liquid level switch (26), and the high liquid level switch (25) and the low liquid level switch (26) are both connected with an upper computer.
9. A water circulation system according to claim 8, wherein a visual level tube (23) is also provided on the filler tank (24).
10. A working method of a water circulation system is characterized by comprising the following steps:
s1, firstly, opening an external water replenishing pipeline to supply water for the cooling water tower (18), controlling a pneumatic ball valve (2) on the water conveying pipeline to be opened by the upper computer, and simultaneously starting a circulating water pump (17) to add water into a water adding tank (24);
s2, monitoring the water level change in the water adding tank (24) through a high liquid level switch (26) and a low liquid level switch (25) on the water adding tank (24), and closing a pneumatic ball valve (2) and a circulating water pump (17) on a water conveying pipeline by an upper machine when the water level reaches the high liquid level; when the liquid level is lower than the height of the high liquid level switch (26), the pneumatic ball valve (2) and the circulating water pump (17) on the water conveying pipeline are controlled to automatically start water supplement;
s3, when the heating equipment runs, the upper computer controls the pneumatic ball valve (2) on the first water circulation pipeline to be closed, simultaneously opens the pneumatic ball valve (2) between the heating equipment cooling branch and the second water circulation pipeline, the second stop valve (20) and the third stop valve (21), starts the booster water pump (22) to supply water to the heating equipment cooling branch through the water adding tank (24), performs heat dissipation and cooling on the heating equipment through the radiator (7) on the heating equipment cooling branch, and returns cooling water to the water adding tank (24), so that a second group of semi-closed loop water circulation control system is formed;
s4, monitoring the pressure and temperature change of the pressurized water in real time by a pressure gauge (14), a temperature sensor (13) and a pressure sensor (12) in the second water circulation pipeline in the step S3, when the temperature sensor (13) detects that the temperature of the water supplied to the cooling branch of the heating equipment exceeds a set value, controlling a pneumatic ball valve (2) between the cooling branch of the heating equipment and the second water circulation pipeline to be closed by an upper computer, starting the pneumatic ball valve (2) on the first water circulation pipeline, discharging the circulating water into a cooling water tower (18) through a pressurized water pump (22), and repeating the step S2 when the liquid level in a water adding tank (24) is reduced, so as to supplement water for the water adding tank (24), thereby forming a first group of semi-closed loop water circulation control systems;
s5, according to the step S4, when the temperature sensor (13) detects that the temperature of the circulating water is reduced to the normal cooling water temperature, controlling the pneumatic ball valve (2) on the first water circulating pipeline to be closed, opening the pneumatic ball valve (2) between the cooling branch of the heat-generating equipment and the second water circulating pipeline, and repeating the step S3;
and S6, according to the steps S3 and S5, when the heating equipment runs, the corresponding pneumatic ball valves (2) on the muck improvement flushing branch, the spraying dust-falling branch and the blind area high-pressure water excavation branch in the flushing water pipeline are respectively controlled to be opened to control the on-off of the muck improvement branch, the blind area high-pressure water excavation branch and the spraying dust-falling branch.
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