CN114411881A - Negative pressure eliminating device in reinjection water well - Google Patents
Negative pressure eliminating device in reinjection water well Download PDFInfo
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- CN114411881A CN114411881A CN202210118621.4A CN202210118621A CN114411881A CN 114411881 A CN114411881 A CN 114411881A CN 202210118621 A CN202210118621 A CN 202210118621A CN 114411881 A CN114411881 A CN 114411881A
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- recharge
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/32—Methods or installations for obtaining or collecting drinking water or tap water with artificial enrichment, e.g. by adding water from a pond or a river
- E03B3/34—Methods or installations for obtaining or collecting drinking water or tap water with artificial enrichment, e.g. by adding water from a pond or a river of underground water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/40—Protecting water resources
- Y02A20/406—Aquifer recharge
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention relates to a negative pressure eliminating device in a recharge well, which is structurally characterized in that a recharge pipe is inserted in the recharge well, a portal frame is arranged on a well mouth of the recharge well, a hoisting device is arranged on the portal frame, a conical hopper sealing cover body is connected under a hoisting rope of the hoisting device, the conical hopper sealing cover body is vertically hung in the recharge pipe, a necking sealing flange for preventing the conical hopper sealing cover body from falling off is arranged at the lower port of the recharge pipe, a water level meter is further arranged in the recharge pipe, a signal data line of the water level meter is connected with a controller, and the controller is electrically connected with the hoisting device so as to control the lifting of the conical hopper sealing cover body in the recharge pipe according to the water level in the recharge pipe. The invention can keep the recharge water filled in the recharge pipe from the lower port to the wellhead section all the time, avoid the phenomenon of negative pressure inside the recharge water in the recharge pipe section caused by the increase of the amplitude of the water level in the pipe, correspondingly reduce the separation of gaseous substances contained in the recharge water and avoid the condition of blocking a seepage passage caused by the separation of the gaseous substances.
Description
Technical Field
The invention relates to an underground water recharge treatment device, in particular to a negative pressure elimination device in a recharge water well.
Background
Groundwater recharge is a technical measure for artificially replenishing groundwater. The water source used for groundwater recharge will normally contain small amounts of solid and gaseous materials. In the process of transporting the recharge water to the underground aquifer through the pipeline and the recharge well, the pressure, the temperature and the like of the recharge water can be changed, so that solid substances in the water are accumulated and gaseous substances are separated out.
When the recharge water enters the underground aquifer from the recharge well, the recharge water firstly passes through the recharge well filter and then enters the aquifer through the filter bed outside the well. And communicated pores in the recharging well filter, the filter material layer outside the well and the water-containing layer form a water seepage channel for recharging the underground water. Solid substance particles are gathered in the water seepage channel, so that the water seepage channel is gradually reduced; and gaseous substances in water are separated out and gathered to form micro bubbles, the micro bubbles gradually form larger bubbles after gathering, and an air resistance section is formed in a communicating pore channel of the filter bed layer or the aquifer outside the well. The occurrence of these phenomena can cause the blocking of the migration channel of the recharge water, and reduce the recharge efficiency.
Most of the existing groundwater recharge processes are that a recharge water solidifying and degassing device is installed outside a recharge well, but after the recharge water enters a recharge well head, the water pressure and the water temperature of the recharge water can change. Particularly, in the part above the water surface in the recharge well, the flow velocity is gradually increased under the influence of gravity acceleration due to the effect of gravity on the recharge water; meanwhile, the increment of the water flow entering the wellhead is small, the water quantity required for keeping the original water flow density due to the increase of the flow speed of the recharge water cannot be met, negative pressure can be generated inside the recharge water (column), and gaseous substances contained in the water can be continuously separated out and gathered in the negative pressure state and exist in the recharge water in the form of micro-bubbles.
After the recharge water containing micro bubbles enters a pipe section below the water surface in the well, the pressure intensity is gradually increased along with the continuous increase of the depth; in most cases, the water temperature will also rise continuously. Under the combined action of water temperature and water pressure, although part of micro-bubbles are re-dissolved in the recharge water, part of micro-bubbles can enter the aquifer through the water seepage channel along with the recharge water. In the process that the reinjection water moves in the water seepage channel, micro bubbles in the water can be gradually adsorbed on the inner wall surface of the water seepage channel along the way. When the micro-bubbles adsorbed and gathered at a certain position of the water seepage channel are more enough to form an air resistance section, the water seepage channel is blocked, so that the migration path of the recharge water is blocked.
In the existing groundwater recharge process, after recharge water enters a recharge well, negative pressure is generated inside the recharge water (column) in a pipe section above a water level line in the well, so that a water seepage channel is blocked by gas, and the blockage condition of the water seepage channel caused by the negative pressure is generated occasionally, so that the recharge working efficiency is influenced.
Disclosure of Invention
The invention aims to provide a negative pressure eliminating device in a recharge water well, which aims to solve the problem that the recharge working efficiency is influenced by the separation of gaseous substances and the blockage of seepage channels in the recharge process of underground water.
The invention is realized by the following steps: a recharge pipe is inserted into the recharge well, a portal frame is arranged on a well mouth of the recharge well, a hoisting device is arranged on the portal frame, a conical hopper sealing cover body is connected with a lifting rope of the hoisting device in a downward mode, the conical hopper sealing cover body is hung in the recharge pipe in a vertical mode, a necking sealing flange used for preventing the conical hopper sealing cover body from falling off is arranged at the lower port of the recharge pipe, a water level gauge is further arranged in the recharge pipe, a signal data line of the water level gauge is connected with a controller, and the controller is electrically connected with the hoisting device so as to control the conical hopper sealing cover body to lift in the recharge pipe according to the water level in the recharge pipe.
Furthermore, the bottom surface of the conical hopper sealing cover body is an inverted conical surface, and the necking sealing flange arranged at the lower port of the recharging pipe is an annular slope surface matched with the conical degree of the bottom surface of the conical hopper sealing cover body.
Furthermore, the bottom surface of the conical hopper sealing cover body is a spherical surface, and the necking sealing flange arranged at the lower port of the recharging pipe is an annular spherical crown surface matched with the radian of the bottom surface of the conical hopper sealing cover body.
Furthermore, a sealing strip is arranged on the ring surface of the necking sealing rib, which is in contact with the cone bucket sealing cover body.
Furthermore, a plurality of limit ejector rods extending laterally are connected to the cone bucket sealing cover body, and sliding sheets capable of sliding up and down on the inner wall of the recharge pipe are connected to the outer end portions of the limit ejector rods.
Furthermore, a first ring is sleeved on the lifting rope, and the center of the first ring is on the axis of the recharge pipe through a connecting rod support frame.
Furthermore, the lower tip of the cone bucket cover body is connected with a hanging rod, the lower end of the hanging rod is connected with a hanging ball, the hanging rod is sleeved with a second ring, the second ring is arranged on the lower port of the recharge pipe through a connecting rod support frame, and the outer diameter of the hanging ball is larger than the inner diameter of the second ring.
The invention monitors the water level change in the recharging pipe through the water level gauge, when the water level in the recharging pipe changes, the water level gauge converts the pressure difference delta p generated by the water level change into a corresponding electric signal, the electric signal is transmitted to the controller through a signal data line, the controller controls the action of the hoisting device to enlarge or reduce the gap between the conical hopper sealing cover body and the shrinking sealing flange of the recharging pipe, the water yield of the recharging pipe to the recharging well is correspondingly improved or reduced, so that the change amplitude of the water level in the recharging pipe is controlled within a certain range, the recharging pipe from the lower port to the wellhead section can be kept to be filled with the recharging water all the time, the change of the water temperature and the water pressure of the recharging water outside the well after entering the recharging well mouth is relieved, and the phenomenon of negative pressure inside the recharging water (column) in the recharging pipe section above the water level line in the well due to the increase of the amplitude of the water level in the recharging pipe can be avoided to the maximum extent, therefore, the separation of gaseous substances contained in the recharge water is correspondingly reduced, and the condition that the seepage channel is blocked due to the separation of the gaseous substances is avoided.
Drawings
FIG. 1 is a schematic structural diagram of the negative pressure eliminating device in the reinjection water well.
In the figure: 1. the device comprises a water level meter, 2, a water level in a pipe, 3, a recharge pipe, 4, a recharge well, 5, a sealing material layer, 6, a stratum, 7, a filter, 8, an outer filter material layer, 9, a cone bucket sealing cover body, 10, a well water level line, 11, a second ring, 12, a first ring, 13, a lifting rope, 14, an underground water-containing layer, 15, a necking sealing flange, 16, a sliding sheet, 17, a limiting ejector rod, 18, a portal frame, 19, a support, 20, a pulley, 21, a signal data line, 22, a controller, 23, a lifting rod, 24 and a hanging ball.
Detailed Description
As shown in fig. 1, a recharging well 4 is dug in a stratum 6, the recharging well is communicated with an underground aquifer 14, a sealing material layer 5 is attached to the wall of the recharging well 4, and an outer filter material layer 8 and a filter 7 are correspondingly arranged on a section of wall of the well communicated with the underground aquifer 14. The recharging pipe 3 is inserted into the recharging well 4, the upper port of the recharging pipe 3 is fixed on the well head through a support 19, and the lower port of the recharging pipe 3 is submerged below the water level line 10 in the well.
In fig. 1, a portal frame 18 is arranged on a wellhead of a recharge well 4, a hoisting device is arranged on the portal frame 18, the hoisting device comprises a winch, a lifting rope 13, a pulley 20 and the like, one end of the lifting rope 13 is connected with the winch, the other end of the lifting rope is connected with a cone bucket sealing cover body 9 after bypassing the pulley 20, the cone bucket sealing cover body 9 is hung in a recharge pipe 3, and a necking sealing flange 15 for preventing the cone bucket sealing cover body from falling off is arranged at the lower port of the recharge pipe 3. The recharging pipe 3 is also provided with a water level gauge 1, a signal data line 21 of the water level gauge 1 is connected to a signal input end of a controller 22, and the controller is electrically connected with a winch in a hoisting device so as to control the action of the winch according to the water level in the recharging pipe, so that the cone bucket sealing cover body 9 is lifted and lowered in the recharging pipe 3 in a proper amount.
The first ring 12 is sleeved on the lifting rope 13, the center of the first ring 12 is supported on the axis of the recharge pipe 3 through the connecting rod, so that the cone bucket sealing cover body 9 can be pulled on the axis of the recharge pipe 3, the cone bucket sealing cover body 9 is kept at the central position in the recharge pipe, and the recharge pipe can be accurately sealed when falling.
The upper part of the cone bucket sealing cover body 9 is of a conical structure, and the bottom surface is an inverted conical surface. The necking sealing flange 15 arranged at the lower end opening of the recharge pipe 3 is an annular slope surface matched with the bottom surface taper of the conical hopper sealing cover body 9. The upper conical structure of the conical hopper cover sealing body 9 can properly reduce the upward resistance; likewise, the lower conical configuration of the cone cover 9 also provides a suitable reduction in the downward resistance. Of course, the upper portion of the cone cover 9 may have other shapes such as a cylindrical shape or a curved shape. A sealing strip may be provided on the neck seal flange 15 at the lower port of the recharge pipe 3 to seal the lower port of the recharge pipe 3 when the cone cover 9 falls down. The weight of the cone cover 9 can meet the requirement that when the water level 2 in the recharge pipe 3 is at a certain height, the water stored in the recharge pipe 3 cannot leak.
A plurality of limit ejector rods 17 extending laterally are connected on the cone bucket sealing cover body 9, and the outer end parts of the limit ejector rods 17 are connected with sliding sheets 16 capable of sliding up and down on the inner wall of the recharge pipe. Therefore, the conical hopper sealing cover body 9 is always limited at the central position of the recharging pipe 3 through the limiting ejector rod 17 in the lifting process of the conical hopper sealing cover body 9 in the recharging pipe 3. A hanging rod 23 is connected at the lower tip part of the cone bucket sealing cover body 9, a hanging ball 24 is connected at the lower end of the hanging rod 23, a second ring 11 is sleeved on the hanging rod 23, and the second ring 11 is arranged at the lower end of the recharge pipe 3 through a connecting rod bracket. The outer diameter of the sling ball 24 is larger than the inner diameter of the second collar 11 to prevent the sling ball from falling out. The purpose of arranging the second ring 11 at the lower port of the recharge pipe 3 is to limit the rising amplitude of the cone bucket sealing cover body 9 and avoid the negative pressure condition caused by rapid discharge of the recharge water in the recharge pipe 3 due to overlarge opening degree of the lower port.
The position of the cone bucket sealing cover body 9 is within a certain variation range, the larger the rising height of the cone bucket sealing cover body is, the larger the opening degree between the cone bucket sealing cover body and the lower end opening of the recharging pipe 3 is, and the larger the flow rate of the recharging water falling into the recharging well 4 through the recharging pipe 3 is. The water level gauge 1 is used for monitoring the water level change in the recharge pipe 3, when the water level in the pipe changes, the water level gauge 1 transmits a water level change signal to the controller 22, the controller 22 controls the action of the winch so as to enlarge or reduce the gap between the cone bucket sealing cover body 9 and the recharge pipe contraction opening sealing flange 15, the water yield from the recharge pipe 3 to the recharge well 4 is correspondingly improved or reduced, the change amplitude of the water level 2 in the pipe is controlled within a certain range, thus the recharge pipe 3 from the lower end opening to the well head section is always filled with recharge water, the generation of a recharge water negative pressure state is eliminated, and the separation of gaseous substances from the recharge water caused by the change of the water level in the pipe is avoided.
Claims (7)
1. A negative pressure eliminating device in a recharge well is characterized in that a recharge pipe is inserted into the recharge well, a portal frame is arranged on a well mouth of the recharge well, a hoisting device is arranged on the portal frame, a conical hopper sealing cover body is connected with a lifting rope of the hoisting device in a downward mode, the conical hopper sealing cover body is vertically hung in the recharge pipe, a necking sealing flange used for preventing the conical hopper sealing cover body from falling off is arranged at the lower port of the recharge pipe, a water level gauge is further arranged in the recharge pipe, a signal data wire of the water level gauge is connected with a controller, and the controller is electrically connected with the hoisting device so as to control the conical hopper sealing cover body to lift in the recharge pipe according to the water level in the recharge pipe.
2. The negative pressure elimination device in a recharge water well as defined in claim 1, wherein the bottom surface of the conical hopper sealing cover body is an inverted conical surface, and the necking sealing flange arranged at the lower port of the recharge pipe is an annular slope surface which is matched with the conical degree of the bottom surface of the conical hopper sealing cover body.
3. The negative pressure elimination device in a recharge water well as defined in claim 1, wherein the bottom surface of the conical hopper cover body is a spherical surface, and the necking sealing flange arranged at the lower port of the recharge pipe is an annular spherical crown surface matched with the radian of the bottom surface of the conical hopper cover body.
4. The device for eliminating the negative pressure in the reinjection water well as claimed in claim 2 or 3, wherein a sealing strip is arranged on the ring surface of the necking sealing rib, which is in contact with the conical bucket sealing cover body.
5. The negative pressure eliminating device in the recharge water well according to claim 1, 2 or 3, wherein a plurality of limit ejector rods extending sideward are connected on the cone bucket sealing cover body, and sliding sheets capable of sliding up and down on the inner wall of the recharge water pipe are connected at the outer end parts of the limit ejector rods.
6. The apparatus as claimed in claim 1, 2 or 3, wherein the lifting rope is sleeved with a first loop, and the center of the first loop is located on the axial center of the recharging pipe through a connecting rod support.
7. The device for eliminating the negative pressure in the recharge water well according to claim 1, 2 or 3, wherein a hanging rod is connected to the lower tip of the conical bucket cover body, a hanging ball is connected to the lower end of the hanging rod, a second ring is sleeved on the hanging rod and is arranged at the lower port of the recharge water well through a connecting rod support frame, and the outer diameter of the hanging ball is larger than the inner diameter of the second ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210118621.4A CN114411881B (en) | 2022-02-08 | 2022-02-08 | Negative pressure eliminator in recharging well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210118621.4A CN114411881B (en) | 2022-02-08 | 2022-02-08 | Negative pressure eliminator in recharging well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114411881A true CN114411881A (en) | 2022-04-29 |
| CN114411881B CN114411881B (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210118621.4A Active CN114411881B (en) | 2022-02-08 | 2022-02-08 | Negative pressure eliminator in recharging well |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060000690A (en) * | 2004-06-29 | 2006-01-06 | 주식회사 한국수권환경연구센터 | Apparatus and method for gathering deep water |
| CN103526799A (en) * | 2013-10-21 | 2014-01-22 | 西安建筑科技大学 | Telescopic selective water taking device |
| CN205662976U (en) * | 2016-04-15 | 2016-10-26 | 北京市水利规划设计研究院 | Recharging well and system of recharging |
| CN106703121A (en) * | 2017-03-14 | 2017-05-24 | 唐水深 | Multi-level water taking method and structure for reservoir |
| KR101837300B1 (en) * | 2016-10-27 | 2018-03-13 | 한국농어촌공사 | A Underground Water Artificial Recharge System |
| CN209211544U (en) * | 2018-11-30 | 2019-08-06 | 孙立生 | Geothermal water reinjection system |
| JP2020084552A (en) * | 2018-11-22 | 2020-06-04 | 三菱ケミカルアクア・ソリューションズ株式会社 | Pumping system, method for supplying groundwater, and method for suppressing increase of dissolved oxygen concentration in groundwater |
-
2022
- 2022-02-08 CN CN202210118621.4A patent/CN114411881B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060000690A (en) * | 2004-06-29 | 2006-01-06 | 주식회사 한국수권환경연구센터 | Apparatus and method for gathering deep water |
| CN103526799A (en) * | 2013-10-21 | 2014-01-22 | 西安建筑科技大学 | Telescopic selective water taking device |
| CN205662976U (en) * | 2016-04-15 | 2016-10-26 | 北京市水利规划设计研究院 | Recharging well and system of recharging |
| KR101837300B1 (en) * | 2016-10-27 | 2018-03-13 | 한국농어촌공사 | A Underground Water Artificial Recharge System |
| CN106703121A (en) * | 2017-03-14 | 2017-05-24 | 唐水深 | Multi-level water taking method and structure for reservoir |
| JP2020084552A (en) * | 2018-11-22 | 2020-06-04 | 三菱ケミカルアクア・ソリューションズ株式会社 | Pumping system, method for supplying groundwater, and method for suppressing increase of dissolved oxygen concentration in groundwater |
| CN209211544U (en) * | 2018-11-30 | 2019-08-06 | 孙立生 | Geothermal water reinjection system |
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| Publication number | Publication date |
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| CN114411881B (en) | 2023-10-03 |
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