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CN-121988091-A - Geothermal recharging equipment and geothermal recharging method with impurity removing function

CN121988091ACN 121988091 ACN121988091 ACN 121988091ACN-121988091-A

Abstract

The invention relates to the technical field of filtering equipment, and discloses geothermal recharging equipment with an impurity removing function and a geothermal recharging method thereof, including the filtration jar, set up in the sealed lid at filtration jar top, set up in the inlet tube in the filtration jar outside, set up in the outlet pipe in the sealed outside, set up in the cartridge filter of sealed bottom. This geothermal recharging equipment and method with impurity removal function through setting up clean subassembly, when removing the miscellaneous, high-pressure rivers get into back flush space along the connecting pipe, these waters from inside to outside pierces through the cartridge filter, wash the cartridge filter, the screw rod rotates afterwards and drives the cleaning head and reciprocate in the cartridge filter, wash the cartridge filter a bit, so concentrate the pressure in a less region, can improve the washing effect to the cartridge filter, and can effectively control the circulation route of rivers, realize the comprehensive washing to the cartridge filter, avoid appearing clean dead angle.

Inventors

  • GAO XIAORONG
  • REN XIAOQING
  • LU XINGCHEN
  • LV QIANGQIANG
  • XU YONG
  • DONG WENBIN

Assignees

  • 中石化绿源地热能开发有限公司

Dates

Publication Date
20260508
Application Date
20260408

Claims (9)

  1. 1. The geothermal recharging equipment with the impurity removing function comprises a filtering tank (1), a sealing cover (2) arranged at the top of the filtering tank (1), a water inlet pipe (3) arranged at the outer side of the filtering tank (1), a water outlet pipe (4) arranged at the outer side of the sealing cover (2), a filter cartridge (5) arranged at the bottom of the sealing cover (2), and is characterized in that a cleaning component (6) arranged between the water outlet pipe (4) and the filter cartridge (5), a blow-down pipe (7) arranged at the bottom of the filtering tank (1), an exhaust component (8) arranged at the top of the sealing cover (2), the cleaning component (6) specifically comprises a main board (61) arranged in the water outlet pipe (4), an assembly groove (62) arranged at one side of the main board (61) far away from the sealing cover (2), an outflow hole (63) arranged at one side of the main board (61) close to the sealing cover (2), a containing chamber (64) arranged at the inner wall of the assembly groove (62), a supporting spring (65) arranged in the containing chamber (64), a baffle plate (66) arranged in the interior of the assembly groove (62), a connecting hole (67) arranged at the center shaft of the filtering cartridge (61), a connecting hole (67) arranged at the center shaft, a connecting hole (68) arranged at the inner side of the filter cartridge (61), and a cleaning head (68) arranged at the top, a connecting pipe (610) arranged between the second connecting hole (69) and the first connecting hole (67), and a screw (611) arranged between the sealing cover (2) and the filter cartridge (5); The assembly groove (62) is annular in design, the outflow hole (63) is communicated with the assembly groove (62) and distributed in an annular array around the assembly groove (62), the cleaning head (68) is I-shaped, the cleaning head (68) is slidably mounted in the filter cartridge (5), the screw rod (611) is in threaded connection with the cleaning head (68), the upper end of the screw rod (611) extends out of the sealing cover (2), and the connecting pipe (610) is in spiral design and surrounds the outer side of the screw rod (611).
  2. 2. The geothermal recharging device with the impurity removing function according to claim 1, wherein the sealing cover (2) is divided into a cover plate (21) and a convex pipe (22), and the water outlet pipe (4) is connected to the middle part of the convex pipe (22).
  3. 3. The geothermal recharging device with the impurity removing function according to claim 2, wherein the inner wall of the filtering tank (1) is provided with a bottom separation plate (11), an upper separation plate (12) arranged at the bottom of the cover plate (21), and a flow hole (13) arranged at the outer side of the upper separation plate (12); The bottom separation plate (11) and the top separation plate (12) are annular and encircle the outer side of the filter cartridge (5), the diameters of the bottom separation plate (11) and the top separation plate (12) are the same, and a flow channel is arranged between the bottom separation plate and the top separation plate.
  4. 4. The geothermal recharging device with impurity removing function according to claim 2, wherein the filtering cartridge (5) comprises a liner (51) disposed at the bottom of the cover plate (21), and a filtering membrane (52) disposed outside the liner (51); The length of the lining (51) is larger than that of the filter membrane (52), and connecting ends and receiving ends are reserved at two ends of the lining (51).
  5. 5. The geothermal recharging device with impurity removing function according to claim 2, wherein the exhaust assembly (8) comprises a vertical pipe (81) arranged at the top of the cover plate (21) and the convex pipe (22), a boss (82) arranged at the top of the vertical pipe (81), a butt joint hole (83) penetrating through the top of the cover plate (21) and the convex pipe (22), an overflow port (84) arranged at the top of the boss (82), and a sealing bolt (89) arranged at the top opening of the overflow port (84); The lower end of the vertical pipe (81) is communicated with the butt joint hole (83), and the upper end of the vertical pipe (81) is communicated with the overflow port (84).
  6. 6. The geothermal recharging device with the impurity removing function according to claim 5, wherein the exhaust assembly (8) further comprises a receiving groove (85) and a communicating hole (86) formed in an inner wall of the outer overflow port (84), a blocking ball (87) formed in the receiving groove (85), a screen (88) formed in the outer overflow port (84), and a drain hole (810) formed in the sealing bolt (89); The storage groove (85) is communicated with the communication hole (86), the storage groove (85) and the separation net (88) are of an inclined design, the separation net (88) is located at the opening of the storage groove (85), one end of the drainage hole (810) penetrates through the bottom end of the sealing bolt (89), and the other end of the drainage hole penetrates through the side face of the sealing bolt (89).
  7. 7. The geothermal recharging device with the impurity removing function according to claim 6, wherein the opening at the lower end of the draining hole (810) is provided with a groove which is fit with the outer contour of the blocking ball (87).
  8. 8. The geothermal recharging device with the impurity removing function according to claim 7, wherein the inner wall of the water outlet pipe (4) is provided with a limiting ring (41), one end of the water outlet pipe (4) far away from the sealing cover (2) is inserted with a pressing sleeve (42), and the main board (61) is positioned between the limiting ring (41) and the pressing sleeve (42).
  9. 9. A geothermal recharging method with an impurity removing function, using the geothermal recharging apparatus with an impurity removing function according to claim 1, comprising the steps of: Step one, tail water generated after geothermal utilization is collected and conveyed to a sand setting tank through a collecting pipeline, and impurities are separated by utilizing the action of gravity; When the pressure difference reaches 0.05MPa, the booster pump is reversely pressurized, the cleaning assembly (6) is matched to realize reverse water flow flushing, and backwash wastewater enters the sewage tank through the sewage pipe (7); And thirdly, setting an online monitoring point at an outlet of the water outlet pipe (4), and detecting water quality in real time through a turbidity sensor and a particle counter.

Description

Geothermal recharging equipment and geothermal recharging method with impurity removing function Technical Field The invention relates to the technical field of filtering equipment, in particular to geothermal recharging equipment with an impurity removing function and a geothermal recharging method. Background Geothermal resources are used as clean and efficient renewable energy sources, and are increasingly widely applied in the fields of heating, power generation, medical health care and the like. Geothermal recharging is a key link for realizing sustainable development and utilization of geothermal resources, and tail water generated after geothermal utilization is reinjected into an underground thermal reservoir, so that the geothermal recharging method not only can supplement thermal storage capacity and maintain thermal storage pressure, but also can avoid environmental influence caused by direct discharge of the tail water, and is a key technical means for guaranteeing long-term stable utilization of geothermal resources. The filtering equipment is a core component part in the geothermal recharging system, and has the main functions of removing suspended matters, sediment, floccules and other impurities in geothermal tail water, preventing the impurities from blocking pore channels of the recharging well or attaching on the inner wall of a well pipe, and further ensuring the smoothness and stability of the recharging system. The geothermal recharging filtering equipment on the market at present mostly adopts a multistage filtering structure combining coarse filtration and fine filtration, a filter core is used as a filtering core, the filtering precision and interception efficiency of the geothermal recharging filtering equipment directly determine whether recharging water quality meets the hot reservoir injection requirement, the common filter core types comprise honeycomb tubular filter cores, folding filter cores, ceramic filter cores and the like, and the filtering precision covers different grades of 1-100 mu m so as to adapt to impurity content scenes of different geothermal tail waters. However, in the practical application process, the filtering system of the conventional geothermal recharging filtering device still has obvious technical defects, so that the operation efficiency and maintenance economy of the recharging system are restricted, and the core problem is concentrated in the blocking and cleaning links of the filter element. The impurity components of geothermal tail water are complex, especially sandstone thermal storage and geothermal tail water containing more floccules, impurities are easy to be quickly attached to the surface of a filter element and gradually embedded into the pore structure of the filter element, so that the filtering channel of the filter element is blocked. Along with the aggravation of the blockage degree, the water inlet and outlet pressure difference of the filtering equipment can be obviously increased, so that the filtering flow rate can be reduced, the recharging efficiency is affected, and the filter element is possibly damaged due to overhigh pressure, so that unfiltered impurities directly enter the recharging well, and the recharging well is permanently blocked. Disclosure of Invention In view of the problems that the impurity components of geothermal tail water are complex in the prior art, especially in the geothermal tail water with sandstone thermal storage and more floccules, impurities are easy to attach to the surface of a filter element and gradually embed into a pore structure of the filter element, so that a filtering channel of the filter element is blocked, geothermal recharging equipment with an impurity removing function and geothermal recharging method are provided. The application provides geothermal recharging equipment with an impurity removing function and a geothermal recharging method, and aims to regularly clean a filter element and keep water flow smooth. The geothermal recharging device with the impurity removing function comprises a filtering tank, a sealing cover arranged at the top of the filtering tank, a water inlet pipe arranged at the outer side of the filtering tank, a water outlet pipe arranged at the outer side of the sealing cover, a filter cartridge arranged at the bottom of the sealing cover, a cleaning component arranged between the water outlet pipe and the filter cartridge, a sewage discharging pipe arranged at the bottom of the filtering tank, an exhaust component arranged at the top of the sealing cover, the cleaning component specifically comprises a main plate arranged inside the water outlet pipe, an assembly groove arranged at one side of the main plate far away from the sealing cover, an outflow hole arranged at one side of the main plate close to the sealing cover, a storage chamber arranged in the inner wall of the assembly groove, a supporting spring arranged in the storage chamber, a baffle plate