Search

CN-121698424-B - Geothermal water-soluble gas separation device

CN121698424BCN 121698424 BCN121698424 BCN 121698424BCN-121698424-B

Abstract

The invention relates to the technical field of geothermal water treatment and discloses a geothermal water-soluble gas separation device which comprises a tank body, a tank cover arranged at the top end of the tank body, a liquid inlet arranged above the side wall of the tank body, a water outlet arranged at the bottom of the tank body, an exhaust port arranged at the top of the tank cover, a multistage water collecting assembly arranged in the middle of the inner cavity of the tank body and a resonance separation assembly arranged in the inner cavity of the tank body, wherein the multistage water collecting assembly comprises three groups of arc-shaped water collecting pipes and spiral water injection pipes which are arranged at intervals along the axial direction of the tank body, wherein the resonance separation assembly comprises an umbrella-shaped water collecting disc fixedly arranged in the tank cover, a vertical rod fixedly connected to the center of the umbrella-shaped water collecting disc and extending downwards, and three groups of floating units arranged on the vertical rod.

Inventors

  • LIU JIAN
  • LU XINGCHEN
  • JI XUESEN
  • Xue Minglei
  • REN XIAOQING
  • LV QIANGQIANG

Assignees

  • 中石化绿源地热能开发有限公司

Dates

Publication Date
20260508
Application Date
20260211

Claims (9)

  1. 1. The geothermal water-soluble gas separation device comprises a tank body (1), a tank cover (2) arranged at the top end of the tank body (1), a liquid inlet (3) arranged above the side wall of the tank body (1), a water outlet (4) arranged at the bottom of the tank body (1) and an exhaust port (5) arranged at the top of the tank cover (2), and is characterized by further comprising a multistage water collecting component arranged in the middle of the inner cavity of the tank body (1) and a resonance separation component arranged in the inner cavity of the tank body (1); the multistage water collecting assembly comprises three groups of arc water collecting pipes (6) and spiral water injection pipes (7), wherein the three groups of arc water collecting pipes (6) are axially arranged at intervals along the tank body (1), the spiral water injection pipes (7) are communicated with the liquid inlet (3), water outlet ends of each group of arc water collecting pipes (6) are communicated with water collecting bent pipes (8), a plurality of water outlet pipes (9) are arranged on each group of water collecting bent pipes (8), and water inlet ends of each group of arc water collecting pipes (6) are communicated with the spiral water injection pipes (7) through bridging pipelines (10); The resonance separation assembly comprises an umbrella-shaped water catch tray (11) fixedly installed in a tank cover (2), a vertical rod (12) fixedly connected to the center of the umbrella-shaped water catch tray (11) and extending downwards, and three groups of floating units (13) arranged on the vertical rod (12), wherein the umbrella-shaped water catch tray (11) is positioned below an exhaust port (5) and is used for converging separated gas and preventing liquid drops from being carried out, the position of the floating units (13) on the vertical rod (12) corresponds to the level of the arc-shaped water collecting pipe (6), each group of floating units (13) comprises a positioning ring (131) fixedly connected to the vertical rod (12), a sliding ring (132) sleeved on the vertical rod (12) in a sliding manner and a conical screen disc (133) fixedly connected to the sliding ring (132), the height of the conical screen disc (133) is slightly higher than that of the corresponding arc-shaped water collecting pipe (6), a plurality of separation holes (135) distributed in a spiral manner are formed in the conical screen disc (133), and an elastic supporting piece (134) is arranged between the positioning ring (131) and the sliding ring (132); Every group all be equipped with a plurality of adjustment mechanism (14) along circumference interval on arc collector tube (6), adjustment mechanism (14) include with connecting pipe (141) of arc collector tube (6) intercommunication, with cylinder body (142) of connecting pipe (141) intercommunication, slide locate piston ring (143) in cylinder body (142), with piston ring (143) fixed connection's push rod (144) and cover establish reset spring (145) on push rod (144), reset spring (145) both ends are fixed respectively and are connected with cylinder body (142) and piston ring (143), the other end of push rod (144) extends outside cylinder body (142) and articulates there is connecting rod (146), the other end of connecting rod (146) is articulated with corresponding toper sieve dish (133) edge.
  2. 2. The geothermal water-soluble gas separation device according to claim 1, wherein the elastic support member (134) comprises an outer sleeve (1341) fixedly connected to the positioning ring (131), an annular cavity (1342) formed in the outer sleeve (1341), an inner sleeve (1343) slidably inserted into the annular cavity (1342), a limiting plate (1344) fixedly connected to the bottom of the inner sleeve (1343), and a supporting spring (1345) arranged on the inner sleeve (1343), wherein both ends of the supporting spring (1345) are respectively connected with the sliding ring (132) and the outer sleeve (1341).
  3. 3. The geothermal water-soluble gas separation device according to claim 1, wherein a baffle ring (147) is fixedly connected in the cylinder body (142), and the baffle ring (147) is in contact fit with the piston ring (143).
  4. 4. A geothermal water-soluble gas separation device according to claim 3, characterized in that the bottom of the baffle ring (147) is provided with a sealing gasket (148) in sealing contact with the connecting tube (141).
  5. 5. Geothermal water-soluble gas separation device according to claim 1, characterized in that the bottom of the conical screen disc (133) is circumferentially spaced apart with a plurality of sets of guide vanes (136).
  6. 6. Geothermal water-soluble gas separation device according to claim 5, characterized in that the separation aperture (135) is located in a region between two adjacent sets of baffles (136).
  7. 7. The geothermal water-soluble gas separation device of claim 5, wherein a bottom edge of the deflector (136) is serrated.
  8. 8. The geothermal water-soluble gas separation device according to claim 1, wherein the outer cover of the elastic support member (134) is provided with a flexible protective sleeve (137), and both ends of the flexible protective sleeve (137) are fixedly connected with the positioning ring (131) and the sliding ring (132), respectively.
  9. 9. Geothermal water-soluble gas separation device according to claim 1, characterized in that the water-collecting elbow (8) and the water outlet pipe (9) are both located below the corresponding conical sieve tray (133).

Description

Geothermal water-soluble gas separation device Technical Field The invention relates to the technical field of geothermal water treatment, in particular to a geothermal water-soluble gas separation device. Background In the field of geothermal energy development and utilization, geothermal water is taken as an important clean energy source, exploitation is usually realized through a geothermal well, the exploited high-temperature geothermal fluid is a complex thermodynamic system, besides being rich in thermal energy, a large amount of non-condensable gas taking carbon dioxide, hydrogen sulfide, methane and the like as main components is often dissolved, the traditional treatment process generally follows the following procedures that after geothermal water is produced from a wellhead, solid rock debris particles carried in the fluid are firstly removed through a wellhead desander, then the geothermal water subjected to primary purification enters a desander, water-soluble gas is separated through the desander and is discharged through an external pipeline, the geothermal water subjected to degassing treatment is conveyed to a plate heat exchanger through a circulating pump to realize heat exchange, and finally, the geothermal water subjected to treatment is widely applied to regional heating, power generation and industrial and agricultural heat sources. The atmospheric pressure water-soluble gas type geothermal water degassing device and geothermal water exploitation system disclosed by the prior publication No. CN221400458U comprises a tank body, wherein a gas exhaust port is arranged at the upper part of the tank body, a geothermal water exhaust port is arranged at the lower part of the tank body, a geothermal water screen pipe part is arranged in the tank body and positioned between the gas exhaust port and the geothermal water exhaust port, the input end of the geothermal water screen pipe part is arranged at the outer side of the tank body and can be communicated with a geothermal water exploitation pipe group, a plurality of water through holes are formed in the plate surfaces of the two baffle plates, and the two baffle plates are arranged in the tank body from top to bottom and positioned between the geothermal water screen pipe part and the geothermal water exhaust port. In the prior art, dynamic interference such as sudden flow velocity change and pressure pulse exists in the geothermal fluid exploitation process, the traditional degassing equipment is not only limited by a static separation cavity and a fixed flow channel structure, the dynamic change of flow velocity and pressure is difficult to adapt, after geothermal water directly enters the separation cavity in the water-soluble gas separation process, the geothermal water is naturally separated only by the static cavity, the stable state of micro bubbles in a water body is difficult to break so as to promote desorption of the geothermal water, when the water flow size or pressure fluctuates, adjustment cannot be timely made, when the flow rate increases, the flowing speed of geothermal water in a tank body is accelerated, the micro bubbles are not fully gathered and are wrapped and discharged by rapid water, when the flow rate decreases, the water flow power is insufficient, the floating speed of the bubbles is reduced, the bubbles are easy to stay in the water body, separation is incomplete, and the non-separated non-condensable gas forms a gas film on the surface of a heat exchanger after the non-condensable gas enters a subsequent heat exchange system, so that heat transfer is hindered, and the whole heat exchange effect is affected. Disclosure of Invention The invention aims to provide a geothermal water-soluble gas separation device, which aims to solve the problems of unstable separation effect and poor adaptability of the traditional degassing equipment in the prior art when the flow and pressure wave move. The invention provides a geothermal water-soluble gas separation device, which adopts the following technical scheme: The geothermal water-soluble gas separation device comprises a tank body, a tank cover arranged at the top end of the tank body, a liquid inlet arranged above the side wall of the tank body, a water outlet arranged at the bottom of the tank body, an exhaust port arranged at the top of the tank cover, a multistage water collecting assembly arranged in the middle of the inner cavity of the tank body and a resonance separation assembly arranged in the inner cavity of the tank body; the multistage water collecting assembly comprises three groups of arc water collecting pipes and spiral water injection pipes, wherein the three groups of arc water collecting pipes are arranged along the axial direction of the tank body at intervals, the spiral water injection pipes are communicated with the liquid inlet, the water outlet ends of each group of arc water collecting pipes are communicated with water collecting bent pipes,