CN118498430B - Energy underground structure system for assembled subway station and distribution method thereof - Google Patents
Energy underground structure system for assembled subway station and distribution method thereof Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T50/00—Geothermal systems
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
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Abstract
The invention discloses an energy underground structure system for an assembled subway station and a distribution method thereof, belonging to the field of underground engineering, wherein the energy underground structure system comprises a station body, a distribution unit, a top plate radiation end, a middle plate radiation end, an energy bottom plate end, an energy side wall end and an energy segment end; the distribution unit is installed at station body central authorities, and the roof radiation end is fixed at station body top, and the middle plate radiation end is fixed at the middle part of station body, and the energy bottom plate end buries in the bottom of station body, and the energy side wall end buries in the both sides of station body, and the energy section of jurisdiction end buries in the both ends of station body, and roof radiation end, middle plate radiation end, energy bottom plate end, energy side wall end and energy section of jurisdiction end are all connected with the distribution unit. The invention fully utilizes the comprehensive advantages of various energy underground structures, improves the utilization rate of underground space and fully utilizes renewable shallow geothermal energy resources.
Description
Technical Field
The invention relates to the technical field of underground engineering, in particular to an energy underground structure system for an assembled subway station and an allocation method thereof.
Background
The energy underground structure is a shallow geothermal energy utilization form in which a ground source side heat exchange tube in a ground source heat pump is buried in various underground structures. The urban rail transit and energy underground structure fusion system supported by the underground space can explore the application potential of ground source heat energy in the urban rail transit system and search for a new energy utilization mode; the energy, urban rail transit and underground space are fully coupled, the functions of promoting the low-carbon transformation of society are exerted, the energy, the urban rail transit and the underground space are mutually supported and mutually supplemented, the comprehensive benefits including environmental benefits, economic benefits and social benefits are promoted in a higher dimension, and the path selection is provided for the low-carbon ductile city construction.
At present, most of energy underground structures are only embedded with heat exchange tubes in pile foundations, bottom plates, side walls and duct pieces, and various forms of energy underground structures are not integrated into a whole, so that the waste of the embedded space of part of underground structures is caused; in addition, the distribution method of most of the energy underground structures is relatively simple, and a quantifiable strategy is not formed, so that the operation efficiency and the large-scale application of the energy underground structures are affected.
Disclosure of Invention
In order to solve the technical problems, the invention provides an energy underground structure system for an assembled subway station and a distribution method thereof, which are characterized in that a plurality of energy underground structures in different forms are placed in the same prefabricated structure, the comprehensive advantages of the energy underground structures in different forms can be fully utilized, and the utilization rate of an underground space is improved while renewable shallow geothermal energy resources are fully utilized.
In order to achieve the above purpose, the invention discloses an energy underground structure for an assembled subway station, which comprises a station body, a distribution unit, a top plate radiation end, a middle plate radiation end, an energy bottom plate end, an energy side wall end and an energy segment end; the distribution unit is installed at the center of the station body, the top plate radiation tail end is fixed at the top of the station body, the middle plate radiation tail end is fixed at the middle of the station body, the energy bottom plate tail end is buried at the bottom of the station body, the energy side wall tail ends are buried at two sides of the station body, the energy pipe piece tail ends are buried at two ends of the station body, and the top plate radiation tail end, the middle plate radiation tail end, the energy bottom plate tail end, the energy side wall tail end and the energy pipe piece tail end are all connected with the distribution unit.
Further, the assembled subway station is of a multi-ring staggered assembly structure, each ring of station body comprises a bottom beam member, corner members, side beam members, a first vault, a second vault, a middle plate, longitudinal beams and upright posts, two corner members and side beam members are arranged, the two corner members are respectively connected to two ends of the bottom beam member, the side beam members are connected to one end of the corner members far away from the bottom beam member, the side beam members are perpendicular to the bottom beam member, the first vault and the second vault are arc-shaped in the length direction, one end of the first vault is connected with one end of the second vault, the other end of the second vault is connected with the top end of one side beam member, and one end of the first vault far away from the second vault is connected with the top end of the other side beam member; the middle plate is connected between the beam members at two sides, the longitudinal beam is positioned at the bottom of the middle plate, and two ends of the upright post are respectively connected with the longitudinal beam and the bottom beam member.
Further, heat exchange tubes are prefabricated in the bottom beam member and the side beam member, and radiant tubes are fixed on the intrados of the first vault and the second vault and the lower surface of the middle plate.
Further, the top plate radiation end comprises a top plate parallel branch pipe, a top plate water main pipe and a top plate backwater main pipe; the top plate parallel branch pipe is fixed on the inner cambered surfaces of the first vault and the second vault; the top plate water supply main pipe and the top plate backwater main pipe are respectively connected at two ends of the top plate parallel branch pipe, one ends of the top plate water supply main pipe and the top plate backwater main pipe are connected with the distribution unit through flanges, and the other ends of the top plate water supply main pipe and the top plate backwater main pipe are provided with top plate sealing joints.
Further, the middle plate radiation end comprises a middle plate parallel branch pipe, a middle plate water supply main pipe and a middle plate backwater main pipe; the middle plate parallel branch pipe is fixed on the lower surface of the middle plate of the station body; the water main pipe of medium plate and medium plate return water main pipe are connected at the both ends of the parallelly connected branch pipe of medium plate, the one end of medium plate water main pipe and medium plate return water main pipe is connected with distribution unit through the flange, and the other end is provided with the medium plate sealing joint.
Further, the tail end of the energy base plate comprises a longitudinal buried pipe, a base plate water supply branch pipe, a base plate water return branch pipe, a base plate electric valve, a base plate check valve, a base plate water supply main pipe and a base plate water return main pipe; the longitudinal buried pipe is prefabricated in the bottom beam component; one end of the bottom plate water supply branch pipe is connected with the water inlet of the longitudinal buried pipe, the other end is connected with the bottom plate electric valve; one end of the bottom plate backwater branch pipe is connected with the longitudinal buried pipe water outlet, and the other end of the bottom plate backwater branch pipe is connected with the bottom plate check valve;
One end of the bottom plate water supply main pipe is connected with the bottom plate water supply branch pipe through a bottom plate electric valve, the other end is connected with the distribution unit through a flange; one end of the bottom plate backwater main pipe is connected with the bottom plate backwater branch pipe through a bottom plate check valve, the other end is connected with the distribution unit through a flange.
Further, the tail end of the energy side wall comprises a vertical buried pipe, a side wall water supply branch pipe, a side wall water return branch pipe, a side wall electric valve, a side wall check valve, a side wall water supply main pipe and a side wall water return main pipe; the vertical buried pipes are prefabricated in the side members; one end of the side wall water supply branch pipe is connected with the water inlet of the vertical buried pipe, the other end is connected with the side wall electric valve; one end of the side wall backwater branch pipe is connected with a water outlet of the vertical buried pipe, and the other end of the side wall backwater branch pipe is connected with a side wall check valve;
the side wall electric valve at one end of the side wall water supply main pipe is connected with the side wall water supply branch pipe, the other end is connected with the distribution unit through a flange; and one end of the side wall backwater main pipe is connected with the side wall backwater branch pipe through a side wall check valve, and the other end of the side wall backwater main pipe is connected with the distribution unit through a flange.
Further, the tail end of the energy pipe segment comprises a circumferential buried pipe, a pipe segment water supply branch pipe, a pipe segment water return branch pipe, a pipe segment electric valve, a pipe segment check valve, a pipe segment water supply main pipe, a pipe segment water return main pipe, a pipe segment sealing joint and a shield pipe segment; the annular buried pipe is prefabricated in a shield segment; one end of the duct piece water supply branch pipe is connected with the water inlet of the annular buried pipe, and the other end of the duct piece water supply branch pipe is connected with the duct piece electric valve; one end of the segment backwater branch pipe is connected with the water outlet of the annular buried pipe, and the other end of the segment backwater branch pipe is connected with the segment check valve;
One end of the duct piece water supply main pipe is connected with the duct piece water supply branch pipe through a duct piece electric valve, the other end is connected with the distribution unit; one end of the segment backwater main pipe is connected with the segment backwater main pipe through a segment check valve, the other end is connected with the distribution unit; the duct piece sealing joint is arranged at one end of the duct piece water supply branch pipe and one end of the duct piece water return branch pipe, which are far away from the station body;
the shield segments are assembled in a through joint manner in the section provided with the circumferential buried pipe, and the rest sections are assembled in a staggered joint manner.
Further, the distribution unit comprises a PLC controller, a heat exchanger, a radiation tail end circulating pump, an underground structure tail end circulating pump, a radiation tail end and heat exchanger connecting pipeline, an underground structure and heat exchanger connecting pipeline, a water supplementing device and an antenna; the antenna is arranged on the PLC controller and is used for receiving the states of the electric valves in the underground structures of all the energy sources in real time and correcting the existing distribution strategy in real time; the heat exchangers are in one-to-one correspondence with the underground structures of all the energy sources;
The radiation tail end circulating pump is arranged in the distribution unit and is connected with the water inlets of the top plate radiation tail end and the middle plate radiation tail end; the tail end circulating pump of the underground structure is arranged in the distribution unit and is connected with the water inlet of each energy underground structure; the radiation ends and the heat exchanger connecting pipelines and the underground structure and the heat exchanger connecting pipelines are connected with the water supplementing device.
The invention also discloses a distribution method of the energy underground structure system for the assembled subway station, which comprises the following steps:
Step S1: calculating the heat required by the adjusting areas corresponding to the radiation ends;
Step S2: calculating the heat exchange amount of each radiation end per second;
step S3: calculating the opening ratio of an electric valve in each energy underground structure;
Step S4: calculating rated heat supply quantity of each energy underground structure per second;
Step S5: calculating the time required by each radiation end when the radiation ends exchange heat through the underground structures with different energy sources;
Step S6: calculating the starting times of each radiation end per hour;
Step S7: calculating a time loss function value of each radiation end;
step S8: calculating the time weight of each radiation end;
step S9: calculating the average comprehensive heat exchange time of the comprehensive energy underground structure system;
step S10: distributing each radiation end to an energy underground structure corresponding to the maximum time loss value;
step S11: calculating the comprehensive heat exchange time of the energy underground structure;
Step S12: dividing a time loss value distribution interval and a heat exchange amount distribution interval according to the comprehensive heat exchange time and the opening ratio of the electric valve for distribution;
step S13: repeating the steps S11 and S12 until the distribution of all radiation ends is completed;
And each time an electric valve in the energy underground structure is opened or closed, the distribution unit corrects the distribution strategy of the integrated energy underground structure system according to the steps.
The invention has the beneficial effects that:
Compared with a common single-form energy underground structure, the energy underground structure system for the assembled subway station can simultaneously embed the heat exchange tubes in various underground structures, integrates the formed energy bottom plate, the energy side wall and the energy duct piece into one energy underground structure system, and improves the utilization rate of underground space and shallow geothermal energy;
According to the invention, the energy base plate, the energy side wall and the energy duct piece are directly prefabricated in different forms of underground structures, the whole set of energy underground structure system can be synchronously installed along with the assembly of the subway station, no additional working procedure is needed, and popularization and use of the energy underground structure system are facilitated;
The invention adopts a through seam splicing mode in the energy segment areas at the two ends of the station and is connected and reinforced with the station, solves the problem of difficult connection of the main pipe caused by different joint positions of each ring of branch pipes under the conventional multi-ring energy segment staggered seam splicing, adopts the through seam splicing only in the reinforced areas at the two ends of the station, adopts the staggered seam splicing in the other areas, and does not influence the stability of the whole tunnel structure.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
FIG. 2 is a diagram of the overall piping of the integrated energy underground structure system.
Fig. 3 is a block diagram of a single ring assembly station.
Fig. 4 is a schematic diagram of a dispenser unit.
Fig. 5 is a block diagram of a distribution unit.
Fig. 6 is a top plate radiation end piping diagram.
Fig. 7 is a partial enlarged view of the portion a in fig. 6.
Fig. 8 is a diagram of a middle plate radiation end pipeline.
Fig. 9 is a partial enlarged view of the portion B in fig. 8.
Fig. 10 is a diagram of an energy floor end piping.
Fig. 11 is a partial enlarged view of a portion C in fig. 10.
Fig. 12 is a line drawing of the end of the energy sidewall.
Fig. 13 is a partial enlarged view of the portion D in fig. 12.
Fig. 14 is a pipeline diagram of the end of the energy segment.
Fig. 15 is a partial enlarged view of the portion E in fig. 14.
FIG. 16 is a flow chart of a method of distributing integrated energy underground structure systems.
In the figure, 1, a station body; 2. a distribution unit; 3. a top plate radiation end; 4. a midplane radiation end; 5. an energy source bottom plate end; 6. the tail end of the energy side wall; 7. the tail end of the energy segment; 8. a sill member; 9. a corner member; 10. a side member; 11. a first dome; 12. a second dome; 13. a middle plate; 14. a longitudinal beam; 15. a column; 16. a PLC controller; 17. a heat exchanger; 18. a radiation end circulation pump; 19. an underground structure end circulating pump; 20. the radiation end is connected with the heat exchanger through a pipeline; 21. the underground structure is connected with the heat exchanger through a pipeline; 22. a water supplementing device; 23. an antenna; 24. the top plate is connected with the branch pipe in parallel; 25. a top plate water supply main pipe; 26. a top plate backwater main pipe; 27. a top plate sealing joint; 28. the middle plate is connected with the branch pipe in parallel; 29. a middle plate water supply main pipe; 30. a medium plate backwater main pipe; 31. a middle plate sealing joint; 32. longitudinally burying the pipe; 33. a base plate water supply branch pipe; 34. a bottom plate backwater branch pipe; 35. a base plate electric valve; 36. a bottom plate check valve; 37. a bottom plate water supply main pipe; 38. a bottom plate backwater main pipe; 39. vertical pipe burying; 40. side wall water supply branch pipes; 41. a side wall backwater branch pipe; 42. a side wall electric valve; 43. a side wall check valve; 44. a side wall water supply main pipe; 45. a side wall backwater main pipe; 46. annular buried pipe; 47. a segment water supply branch pipe; 48. a segment backwater branch pipe; 49. segment electric valve; 50. a segment check valve; 51. a segment water supply main pipe; 52. a segment backwater main pipe; 53. a segment sealing joint; 54. shield segment.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
The invention discloses an energy underground structure for an assembled subway station and a distribution method thereof.
Referring to fig. 1 and 2, an energy underground structure for an assembled subway station includes a station body 1, a distribution unit 2, a roof radiation end 3, a middle plate radiation end 4, an energy bottom plate end 5, an energy side wall end 6, and an energy segment end 7. Wherein, distribution unit 2 installs at station body 1 central authorities, and roof radiation end 3 is fixed at station body 1 top, and medium plate radiation end 4 is fixed at station body 1's middle part, and energy bottom plate end 5 buries in station body 1's bottom, and energy side wall end 6 buries in station body 1's both sides, and energy section of jurisdiction end 7 buries in station body 1's both ends. The top plate radiation end 3, the middle plate radiation end 4, the energy bottom plate end 5, the energy side wall end 6 and the energy segment end 7 are all connected with the distribution unit 2.
Referring to fig. 3, the assembled subway station in this embodiment is a multi-ring staggered assembled structure, each ring station body 1 includes a sill member 8, a corner member 9, a side member 10, a first dome 11, a second dome 12, a middle plate 13, a longitudinal beam 14 and a pillar 15, two corner members 9 and side members 10 are provided, two corner members 9 are respectively connected to both ends of the sill member 8, the side member 10 is connected to one end of the corner member 9 away from the sill member 8, the side member 10 is perpendicular to the sill member 8, the first dome 11 and the second dome 12 are arc-shaped in the length direction, the first dome 11 is connected to one end of the second dome 12, the other end of the second dome 12 is connected to the top end of one of the side members 10, and one end of the first dome 11 away from the second dome 12 is connected to the top end of the other side member 10; the middle plate 13 is connected between the two side beam members 10, the longitudinal beam 14 is positioned at the bottom of the middle plate 13, and the two ends of the upright post 15 are respectively connected with the longitudinal beam 14 and the bottom beam member 8. Heat exchange tubes are prefabricated in the bottom beam members 8 and the side beam members 10 and used for extracting shallow geothermal energy; a radiant tube is fixed to the intrados of the first and second domes 11 and 12 and the lower surface of the middle plate 13 for adjusting the ambient temperature.
Referring to fig. 6 and 7, the ceiling radiation tip 3 in the present embodiment includes a ceiling parallel branch pipe 24, a ceiling water main pipe 25, and a ceiling return water main pipe 26; after the assembly of the annular station body 1 is completed, fixing the top plate parallel branch pipes 24 on the inner cambered surfaces of the first vault 11 and the second vault 12, and respectively installing the top plate water supply main pipes 25 and the top plate water return main pipes 26 at the two ends of the top plate parallel branch pipes to ensure that the same-stroke circulation loop is formed; in the embodiment, each top plate parallel branch pipe 24 of the five-ring station body 1 forms a top plate radiation end 3; one end of the top plate water supply main pipe 25 and one end of the top plate water return main pipe 26 are connected with the distribution unit 2 through flanges, and the other end is provided with a top plate sealing joint 27.
Referring to fig. 8 and 9, the middle plate radiation end 4 in the present embodiment includes a middle plate parallel branch pipe 28, a middle plate water supply main pipe 29, and a middle plate return water main pipe 30; after the assembly of the annular station body 1 is completed, fixing the middle plate parallel branch pipe 28 on the lower surface of the middle plate 13, and respectively installing the middle plate water supply main pipe 29 and the middle plate water return main pipe 30 at two ends to ensure the formation of a same-stroke circulation loop; in the embodiment, each middle plate parallel branch pipe 28 of the five-ring station body 1 forms a middle plate radiation end 4; one end of the middle plate water supply main pipe 29 and one end of the middle plate water return main pipe 30 are connected with the distribution unit 2 through flanges, and the other end is provided with a middle plate sealing joint 31.
Referring to fig. 10 and 11, the energy floor end 5 in the present embodiment includes a longitudinal buried pipe 32, a floor water supply branch pipe 33, a floor return water branch pipe 34, a floor electric valve 35, a floor check valve 36, a floor water supply main pipe 37, a floor return water main pipe 38; the longitudinal buried pipe 32 is prefabricated in the bottom beam member 8, and a water inlet and a water outlet are reserved on the upper surface; one end of the base plate water supply branch pipe 33 is connected with the water inlet of the longitudinal buried pipe 32 in the five-ring station body 1, and one end of the single joint is connected with the base plate electric valve 35; one end of the multi-joint of the bottom plate backwater branch pipe 34 is connected with the water outlet of the longitudinal buried pipe 32 in the five-ring station body 1, and one end of the single joint is connected with the bottom plate check valve 36;
One end of the multi-joint of the bottom plate water supply main pipe 37 is connected with the five bottom plate water supply branch pipes 33 through the five bottom plate electric valves 35, and one end of the single joint is connected with the distribution unit 2 through a flange; one end of the bottom plate return water main pipe 38 is connected with the five bottom plate return water branch pipes 34 through the five bottom plate check valves 36, and one end of the single joint is connected with the distribution unit 2 through a flange.
Referring to fig. 12 and 13, the energy sidewall end 6 in this embodiment includes a vertical buried pipe 39, a sidewall water supply branch pipe 40, a sidewall water return branch pipe 41, a sidewall electric valve 42, a sidewall check valve 43, a sidewall water supply main pipe 44, and a sidewall water return main pipe 45; vertical buried pipes 39 are prefabricated in the side members 10 with water inlets and outlets left in the inner side; one end of a multi-joint of the side wall water supply branch pipe 40 is connected with a water inlet of a vertical buried pipe 39 in the five-ring station body 1, and one end of a single joint is connected with a side wall electric valve 42; one end of the side wall backwater branch pipe 41 is connected with a water outlet of the vertical buried pipe 39 in the five-ring station body 1, and one end of the single joint is connected with the side wall check valve 43;
one end of a multi-joint of the side wall water supply main pipe 44 is connected with the five side wall water supply branch pipes 40 through the five side wall electric valves 42, and one end of a single joint is connected with the distribution unit 2 through a flange; one end of the multi-joint of the side wall backwater main pipe 45 is connected with the five side wall backwater branch pipes 41 through the five side wall check valves 43, and the other end is connected with the distribution unit 2 through a flange.
Referring to fig. 14 and 15, the energy segment end 7 in the present embodiment includes a circumferential buried pipe 46, a segment water supply branch pipe 47, a segment water return branch pipe 48, a segment electric valve 49, a segment check valve 50, a segment water supply main pipe 51, a segment water return main pipe 52, a segment sealing joint 53, and a shield segment 54; the annular buried pipe 46 is prefabricated in the shield segment 54, and a water inlet and a water outlet are arranged on the inner cambered surface of the capping block of each ring; in the embodiment, four energy segment ends 7 are arranged in a bidirectional tunnel at two ends of a station, and six-ring energy segments are assembled at each energy segment end 7 in a through-joint mode;
One end of a multi-joint of the pipe piece water supply branch pipe 47 is connected with a water inlet of the annular buried pipe 46, and one end of a single joint is connected with a pipe piece electric valve 49; one end of the pipe piece backwater branch pipe 48 is connected with the water outlet of the annular buried pipe 46, and one end of the single joint is connected with the pipe piece check valve 50;
One end of a multi-joint of the duct piece water supply main pipe 51 is connected with the duct piece water supply branch pipe 47 through a duct piece electric valve 49, and one end of a single joint is connected with the distribution unit 2; one end of a multi-joint of the pipe piece return water main pipe 52 is connected with the pipe piece return water branch pipe 48 through a pipe piece check valve 50, and one end of a single joint is connected with the distribution unit 2; the segment sealing joint 53 is installed at one end of the segment water supply branch pipe 47 and the segment water return branch pipe 48 away from the station.
Referring to fig. 4 and 5, the distribution unit 2 in the present embodiment includes a PLC controller 16, a heat exchanger 17, a radiation end circulation pump 18, an underground structure end circulation pump 19, a radiation end and heat exchanger connection line 20, an underground structure and heat exchanger connection line 21, a water replenishing device 22, and an antenna 23. The antenna 23 is installed on the PLC controller 16, and is configured to receive the states of the electric valves in the underground structures of different energy sources in real time, correct the existing allocation strategy in real time, and connect the radiation end pipelines corresponding to the heat exchangers 17 of each underground structure of energy sources; the heat exchangers 17 are in one-to-one correspondence with the energy underground structures; the radiation end circulating pump 18 is arranged inside the distribution unit 2 and is connected with the water inlet of each radiation end; the underground structure tail end circulating pump 19 is arranged inside the distribution unit 2 and is connected with a water inlet of the energy underground structure; the water replenishing device 22 is connected with all radiation ends and the heat exchanger connecting pipeline 20 and the underground structure and the heat exchanger connecting pipeline 21 and is used for replenishing circulating water to the radiation ends and the energy underground structure circulating loop.
Referring to fig. 16, a method of distributing an energy underground structure for an assembled subway station according to the present invention includes the steps of:
step S1: the heat required by the corresponding adjustment area of each radiation end is calculated as follows:
the heat exchange amount required by the radiation end of the top plate is as follows: ；
The heat exchange amount required by the radiation tail end of the middle plate is as follows: ；
Wherein, Represents the volumetric specific heat capacity of air,Representing the air volume of the corresponding conditioning area at the end of the radiation,Indicating the target temperature of the corresponding conditioning region at the radiant end of the top plate,Indicating the current air temperature at the radiant end of the top plate corresponding to the conditioned zone,Indicating the target temperature of the radiating end of the midplane corresponding to the conditioning region,Indicating the current air temperature of the corresponding conditioning area at the radiating end of the midplane.
Step S2: the heat exchange amount per second at each radiation end is calculated as follows:
The heat exchange amount of the tail end of the top plate is as follows: ；
The heat exchange amount of the tail end of the middle plate is as follows: ；
Wherein, Represents the surface area of the radiation heat exchange tube of the top plate,Represents the emissivity of the top plate radiation heat exchange tube,Represents the surface area of the radiation heat exchange tube of the middle plate,Represents the emissivity of the medium plate radiation heat exchange tube,Representing the steven boltzmann constant,Indicating the current temperature of the radiant end of the top plate,Indicating the current air temperature at the radiant end of the top plate corresponding to the conditioned zone,Indicating the current temperature of the radiating end of the midplane,Indicating the current air temperature of the corresponding conditioning area at the radiating end of the midplane.
In this embodiment, ten top plate radiation ends are used, and the heat exchange amount is as follows: 。
In this embodiment, there are eight middle plate radiation ends, and the heat exchange amount is sequentially: 。
Step S3, calculating the opening ratio of the electric valve of each energy underground structure, wherein the formula is as follows: ；
Wherein, Indicating the number of electrically operated valves open in a branch of an energy underground structure,Representing the total number of electrically operated valves in the energy underground structure; the opening and closing of the electric valve in the energy underground structure are judged through the heat exchange quantity which can be provided in the corresponding branch of the electric valve, and the judging conditions are as follows:
；
Wherein, Represents the mass specific heat capacity of the circulating water in the branch,Represents the mass flow of the circulating water in the branch,Representing the temperature of the inlet water in the branch,Indicating the outlet water temperature of the branch,Representing the total number of branches in the energy subsurface structure,Indicating the rated heat exchange capacity of the energy underground structure.
Step 4: the rated heat exchange amount of each energy underground structure per second is calculated, and the formula is as follows:
Rated heat exchange amount of energy base plate: ；；；
Wherein, The heat exchange quantity of the energy base plate in unit area obtained through the rock-soil thermal response test is represented,Representing the actual area of an energy base plate in the integrated energy underground structure system; the heat exchange quantity of the energy side wall in unit area obtained through the rock-soil thermal response test is represented, Representing the actual area of an energy side wall in the comprehensive energy underground structure system; The heat exchange quantity of the energy segment in unit area obtained through the rock-soil thermal response test is represented, The actual area of the energy segment in the integrated energy underground structure system is represented.
In this embodiment, there is an energy base plate with a rated heat exchange capacity of。
In the embodiment, two energy side walls are arranged, and rated heat exchange capacity is respectively as follows。
In the embodiment, four energy segments are arranged, and rated heat exchange capacity is respectively as follows。
Step S5, calculating the time required by each radiation end when heat exchange is carried out through the underground structures with different energy sources, wherein the formula is as follows:
The equation of the heat exchange process of the first top plate radiation end through the energy bottom plate is as follows: ；
Wherein the method comprises the steps of The loss coefficient when the energy bottom plate end is adopted is represented, and the calculation formula is as follows: ; wherein the method comprises the steps of Indicating the heat loss along the way of the energy base plate,Represents the temperature of the circulating water in the pipe per linear meter,Represents the temperature of the rock soil outside the tube in units of linear meters,Represents the coefficient of convective heat transfer,Representing the heat exchange area of a unit linear meter pipeline; And The current radiation end temperature and the air temperature are respectively expressed as integral variablesIs a function of (2).
The time required by the heat exchange of the first top plate radiation end through the energy bottom plate can be obtained through the heat exchange equation and scientific calculation software。
The heat exchange time matrix of different radiation ends through various energy underground structures can be calculated by the same method:
；
Renumbering the energy underground structure in the time matrix, wherein the number 1 represents an energy bottom plate, the numbers 2 to 3 represent two energy side walls, and the numbers 4 to 7 represent four energy segments.
；
Step S6, calculating the starting times of each radiation end per hour, wherein the formula is as follows:；
Wherein the method comprises the steps of Representing the time-by-time load of the adjustment area,Indicating the temperature of the regulated zoneTo the point ofThe required heat exchange amount is calculated by the method,Indicating a high temperature threshold value of the high temperature,Indicating a low temperature threshold value of the temperature,Represents the volumetric specific heat capacity of air,Representing the air volume of the corresponding conditioning area of the radiation end; in summer, when the air temperature in the conditioning area is higher thanWhen the radiation end starts to be lower thanThe radiation end is closed when the radiation end is closed; in winter, when the air temperature in the conditioning area is lower thanWhen the radiation end starts, higher thanThe radiation ends are closed when.
Step S7, calculating a time loss function value of each radiation end, wherein the formula is as follows:；
Wherein, For a minimum heat exchange time of a certain radiation end in the time matrix,For the next smallest heat exchange time of a certain radiation end in the time matrix.
Step S8, calculating the time weight of each radiation end, wherein the formula is as follows:
The top plate radiation end time weight is: ；
the radiation end time weight of the middle plate is as follows: ；
Wherein the method comprises the steps of AndRespectively representing the sum of corresponding heat exchange time of a certain top plate radiation end and a middle plate radiation end in different energy underground structures, and k represents seven energy underground structures in the embodiment.
S9, calculating the average comprehensive heat exchange time of the comprehensive energy underground structure system, wherein the formula is as follows:；
Wherein, AndThe number of activations per hour of the different ceiling radiation ends and the middle plate radiation ends are respectively indicated,AndThe time weights of the different ceiling radiation ends and the middle plate radiation ends on the respective energy underground structures are represented respectively.
And step S10, distributing each radiation end to the energy underground structure corresponding to the maximum time loss value.
Step S11, calculating comprehensive heat exchange time of the underground structure with the largest quantity of distributed radiation ends, wherein the formula is as follows:；
where p represents the number of radiating ends of the top plate on the energy source underground structure and q represents the number of radiating ends of the middle plate on the energy source underground structure.
Step S12, dividing a time loss value distribution interval and a heat exchange amount distribution interval according to the comprehensive heat exchange time and the opening ratio of the electric valve, wherein the dividing strategy is as follows:；
At the position of Partial radiation end, according to different radiation end time loss valueThe distribution is carried out from the big order to the small order; at the position ofPart of the radiation ends are subjected to heat exchange according to the required heat exchange quantity of different radiation endsThe allocation being performed in order of magnitude, if during the allocation processAnd the radiation end of the energy source is distributed to the energy source underground structure corresponding to the second smallest heat exchange time.
Step S13: the above steps S11 and S12 are repeated until the distribution of all radiation ends is completed.
And when the electric valve is opened or closed in the energy underground structure, the PLC controller in the distribution unit corrects the distribution strategy of the comprehensive energy underground structure system according to the steps.
Claims (7)
1. A method for distributing an energy underground structure system for an assembled subway station, which is characterized in that: the energy underground structure system comprises a station body (1), a distribution unit (2), a top plate radiation end (3), a middle plate radiation end (4), an energy bottom plate end (5), an energy side wall end (6) and an energy segment end (7); the distribution unit (2) is arranged at the center of the station body (1), the top plate radiation tail end (3) is fixed at the top of the station body (1), the middle plate radiation tail end (4) is fixed at the middle of the station body (1), the energy bottom plate tail end (5) is buried at the bottom of the station body (1), the energy side wall tail ends (6) are buried at two sides of the station body (1), the energy pipe piece tail ends (7) are buried at two ends of the station body (1), and the top plate radiation tail end (3), the middle plate radiation tail end (4), the energy bottom plate tail end (5), the energy side wall tail end (6) and the energy pipe piece tail end (7) are connected with the distribution unit (2);
The assembled subway station is of a multi-ring staggered assembly structure, each ring of station body (1) comprises a bottom beam member (8), corner members (9), side beam members (10), a first vault (11), a second vault (12), a middle plate (13), longitudinal beams (14) and upright posts (15), two corner members (9) and the side beam members (10) are arranged, the two corner members (9) are respectively connected to two ends of the bottom beam member (8), the side beam members (10) are connected to one end, far away from the bottom beam member (8), of each corner member (9), the side beam members (10) are perpendicular to the bottom beam member (8), the first vault (11) and the second vault (12) are arc-shaped in the length direction, the first vault (11) is connected with one end of the second vault (12), the other end, far away from the second vault (11), of the second vault (12) is connected with the top end of one side beam member (10); the middle plate (13) is connected between the two side beam members (10), the longitudinal beams (14) are positioned at the bottom of the middle plate (13), and the two ends of the upright post (15) are respectively connected with the longitudinal beams (14) and the bottom beam member (8);
heat exchange tubes are prefabricated in the bottom beam members (8) and the side beam members (10), and radiant tubes are fixed on the inner cambered surfaces of the first vault (11) and the second vault (12) and the lower surface of the middle plate (13);
The distribution method comprises the following steps:
Step S1: calculating the heat required by the adjusting areas corresponding to the radiation ends;
Step S2: calculating the heat exchange amount of each radiation end per second;
step S3: calculating the opening ratio of an electric valve in each energy underground structure;
Step S4: calculating rated heat supply quantity of each energy underground structure per second;
Step S5: calculating the time required by each radiation end when the radiation ends exchange heat through the underground structures with different energy sources;
Step S6: calculating the starting times of each radiation end per hour;
Step S7: calculating a time loss function value of each radiation end;
step S8: calculating the time weight of each radiation end;
step S9: calculating the average comprehensive heat exchange time of the comprehensive energy underground structure system;
step S10: distributing each radiation end to an energy underground structure corresponding to the maximum time loss value;
step S11: calculating the comprehensive heat exchange time of the energy underground structure;
Step S12: dividing a time loss value distribution interval and a heat exchange amount distribution interval according to the comprehensive heat exchange time and the opening ratio of the electric valve for distribution;
step S13: repeating the steps S11 and S12 until the distribution of all radiation ends is completed;
The distribution unit (2) corrects the distribution strategy of the integrated energy underground structure system according to the steps when the electric valve is opened or closed in the energy underground structure.
2. A method of distributing an energy underground structural system for an assembled subway station according to claim 1, wherein: the top plate radiation end (3) comprises a top plate parallel branch pipe (24), a top plate water main pipe (25) and a top plate backwater main pipe (26); the roof parallel branch pipe (24) is fixed on the intrados of the first vault (11) and the second vault (12); the top plate water supply main pipe (25) and the top plate return water main pipe (26) are respectively connected to two ends of the top plate parallel branch pipe (24), one ends of the top plate water supply main pipe (25) and the top plate return water main pipe (26) are connected with the distribution unit (2) through flanges, and the other ends of the top plate water supply main pipe and the top plate return water main pipe are provided with top plate sealing joints (27).
3. A method of distributing an energy underground structural system for an assembled subway station according to claim 1, wherein: the middle plate radiation end (4) comprises a middle plate parallel branch pipe (28), a middle plate water supply main pipe (29) and a middle plate return water main pipe (30); the middle plate parallel branch pipe (28) is fixed on the lower surface of the middle plate (13) of the station body (1); the water supply main pipe (29) and the water return main pipe (30) are connected to two ends of the parallel branch pipe (28), one ends of the water supply main pipe (29) and the water return main pipe (30) are connected with the distribution unit (2) through flanges, and the other ends of the water supply main pipe and the water return main pipe are provided with middle plate sealing joints (31).
4. A method of distributing an energy underground structural system for an assembled subway station according to claim 1, wherein: the energy base plate tail end (5) comprises a longitudinal buried pipe (32), a base plate water supply branch pipe (33), a base plate backwater branch pipe (34), a base plate electric valve (35), a base plate check valve (36), a base plate water supply main pipe (37) and a base plate backwater main pipe (38); the longitudinal buried pipe (32) is prefabricated in the bottom beam component (8); one end of the bottom plate water supply branch pipe (33) is connected with a water inlet of the longitudinal buried pipe (32), and the other end of the bottom plate water supply branch pipe is connected with the bottom plate electric valve (35); one end of the bottom plate backwater branch pipe (34) is connected with the water outlet of the longitudinal buried pipe (32), and the other end is connected with the bottom plate check valve (36);
One end of the bottom plate water supply main pipe (37) is connected with the bottom plate water supply branch pipe (33) through a bottom plate electric valve (35), and the other end of the bottom plate water supply main pipe is connected with the distribution unit (2) through a flange; one end of the bottom plate return water main pipe (38) is connected with the bottom plate return water branch pipe (34) through a bottom plate check valve (36), and the other end is connected with the distribution unit (2) through a flange.
5. A method of distributing an energy underground structural system for an assembled subway station according to claim 1, wherein: the energy side wall tail end (6) comprises a vertical buried pipe (39), a side wall water supply branch pipe (40), a side wall backwater branch pipe (41), a side wall electric valve (42), a side wall check valve (43), a side wall water supply main pipe (44) and a side wall backwater main pipe (45); the vertical buried pipe (39) is prefabricated in the side sill member (10); one end of the side wall water supply branch pipe (40) is connected with a water inlet of the vertical buried pipe (39), and the other end of the side wall water supply branch pipe is connected with the side wall electric valve (42); one end of the side wall backwater branch pipe (41) is connected with a water outlet of the vertical buried pipe (39), and the other end of the side wall backwater branch pipe is connected with a side wall check valve (43);
One end of the side wall water supply main pipe (44) is connected with the side wall water supply branch pipe (40) through a side wall electric valve (42), and the other end of the side wall water supply main pipe is connected with the distribution unit (2) through a flange; one end of the side wall backwater main pipe (45) is connected with the side wall backwater branch pipe (41) through a side wall check valve (43), and the other end is connected with the distribution unit (2) through a flange.
6. A method of distributing an energy underground structural system for an assembled subway station according to claim 1, wherein: the energy pipe segment tail end (7) comprises a circumferential buried pipe (46), a pipe segment water supply branch pipe (47), a pipe segment water return branch pipe (48), a pipe segment electric valve (49), a pipe segment check valve (50), a pipe segment water supply main pipe (51), a pipe segment water return main pipe (52), a pipe segment sealing joint (53) and a shield pipe segment (54); the circumferential buried pipe (46) is prefabricated in a shield segment (54); one end of the duct piece water supply branch pipe (47) is connected with a water inlet of the annular buried pipe (46), and the other end of the duct piece water supply branch pipe is connected with a duct piece electric valve (49); one end of the segment backwater branch pipe (48) is connected with a water outlet of the annular buried pipe (46), and the other end of the segment backwater branch pipe is connected with a segment check valve (50);
One end of the duct piece water supply main pipe (51) is connected with the duct piece water supply branch pipe (47) through a duct piece electric valve (49), and the other end is connected with the distribution unit (2); one end of the duct piece water return main pipe (52) is connected with the duct piece water return main pipe (52) through a duct piece check valve (50), and the other end is connected with the distribution unit (2); the duct piece sealing joint (53) is arranged at one end of the duct piece water supply branch pipe (47) and the duct piece water return branch pipe (48) far away from the station body (1);
The shield segments (54) are assembled in a through joint manner in the section provided with the annular buried pipe (46), and the rest sections are assembled in a staggered joint manner.
7. A method of distributing an energy underground structural system for an assembled subway station according to claim 1, wherein: the distribution unit (2) comprises a PLC (programmable logic controller) controller (16), a heat exchanger (17), a radiation tail end circulating pump (18), an underground structure tail end circulating pump (19), a radiation tail end and heat exchanger connecting pipeline (20), an underground structure and heat exchanger connecting pipeline (21), a water supplementing device (22) and an antenna (23); the antenna (23) is arranged on the PLC (16) and is used for receiving the states of the electric valves in the underground structures of the energy sources in real time and correcting the existing distribution strategy in real time; the heat exchangers (17) are in one-to-one correspondence with the energy underground structures;
The radiation tail end circulating pump (18) is arranged inside the distribution unit (2) and is connected with water inlets of the top plate radiation tail end (3) and the middle plate radiation tail end (4); the tail end circulating pump (19) of the underground structure is arranged in the distribution unit (2) and is connected with the water inlet of each energy underground structure; the radiation end and heat exchanger connecting pipelines (20) and the underground structure and heat exchanger connecting pipelines (21) are connected with the water supplementing device (22).
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| CN116446926A (en) * | 2023-03-20 | 2023-07-18 | 深圳大学 | Structure conversion method for forming integral subway station by double-hole closely-attached jacking pipe |
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| CN112281918B (en) * | 2020-11-13 | 2022-06-21 | 广州地铁设计研究院股份有限公司 | Assembled subway station and construction method thereof |
| CN117167853A (en) * | 2023-08-30 | 2023-12-05 | 上海市隧道工程轨道交通设计研究院 | Diversion heat transfer decoration component for subway station |
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| CN116446926A (en) * | 2023-03-20 | 2023-07-18 | 深圳大学 | Structure conversion method for forming integral subway station by double-hole closely-attached jacking pipe |
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