CN209908461U - Geothermal well downhole pipeline dosing system - Google Patents
Geothermal well downhole pipeline dosing system Download PDFInfo
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- CN209908461U CN209908461U CN201920317099.6U CN201920317099U CN209908461U CN 209908461 U CN209908461 U CN 209908461U CN 201920317099 U CN201920317099 U CN 201920317099U CN 209908461 U CN209908461 U CN 209908461U
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Abstract
The utility model discloses a geothermal well is pipeline medicine system in pit, medicine system include in proper order through pipeline the medicine dispensing box, medicament bucket, medicament conveying unit and the catch water that connect in order, and the medicament conveying unit includes first heating device, measuring pump, second heating device, medicament delivery tray, adds pencil, well head control valve that the pipeline connects in order, is provided with the three-way valve above the well head, is provided with the medicine weight adding at the pencil lower extreme that adds, is provided with the suit protection tube at the outer wall that adds the pencil. The utility model discloses a method that the pipe is deep adds the medicament into geothermal well depths, makes the medicament can full play drug effect, and the continuous stable operation of unit has been guaranteed in the corruption of effectual reduction pipeline, the life-span of extension pipeline.
Description
The technical field is as follows:
the utility model relates to an inside scale removal system of geothermal pipeline and concrete operation steps, in particular to geothermal well is pipeline medicine system in pit.
Secondly, background art:
geothermy is a clean renewable energy source, and nowadays, the environmental awareness is more and more strong, and geothermy is very easy to generate scaling phenomenon due to more mineral substances in the utilization process, so that the situations of wellhead blockage, damage of aboveground equipment and the like are caused, the waste of manpower and material resources is caused, and the investment loss is reduced.
Geothermal water has high mineralization degree, after the geothermal water is conveyed out of the geothermal well, mineral substances such as calcium carbonate, calcium silicate, calcium sulfate and the like which can be originally dissolved in the geothermal water exceed a saturated state due to the change of temperature and pressure, so that scaling is formed on a well wall or a pipe wall.
The existing descaling method comprises the following steps:
firstly, only the scaling substances in the well pipe can be removed by adopting a mechanical descaling method, the scaling phenomenon in equipment on the well and close to the pipe wall cannot be completely removed, and still great hidden trouble is brought to the operation of the equipment.
Secondly, the solid chemical medicine block dissolving method is greatly influenced by the temperature in the well, the medicine block dissolving is difficult to control, the implementation difficulty is high, and the medicine adding pipeline is easy to block.
And thirdly, adding the scale inhibitor from the well mouth, so that the scaling of the well wall cannot be prevented, the scaling of the well wall of the geothermal well can influence the utilization of geothermal heat, and the well mouth can be thoroughly blocked due to scaling when the scaling is serious, so that the great loss is caused. (typical example: Tibet Naqu geothermal power plant)
In the practical application process, the used chemical tube is extracted and checked, the condition that the tube wall is worn and broken is found, after careful analysis, the chemical tube is found to generate friction collision between the chemical tube and the tube wall at the outlet tee joint along with the increase of steam flow of the production well, and therefore the chemical tube is broken; when two geothermal wells of the sheep geothermal power plant are used for adding chemicals into the underground, after one-time shutdown and the unit is ready to start the east on the third day, the chemicals are found to be unable to be added, and the chemicals are checked to cause pipeline blockage due to low-temperature solidification (the temperature of sheep geothermal power plant in winter is about 20 ℃ below zero at the lowest).
Therefore, the reasonable chemical adding system and the descaling method have great significance for the quality of the scale inhibition and descaling effects of the geothermal water.
Thirdly, the contents of the utility model:
the technical problem that you want to solve in west of this utility model is: the underground pipeline dosing system for the geothermal well can reduce corrosion of a pipeline by dosing the wellhead, prolong the service life of the pipeline and ensure continuous and stable operation of a unit.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a downhole pipeline dosing system of a geothermal well comprises a dosing tank, a medicament barrel, a medicament conveying unit and a steam-water separator which are sequentially connected through a pipeline, wherein the medicament conveying unit comprises a first heating device, a metering pump, a second heating device, a medicament conveying disc, a dosing pipe and a well head control valve which are sequentially connected through a pipeline, a three-way valve is arranged above the well head, one end of the dosing pipe is fixedly connected with the medicament conveying disc, the outer wall of the lower end of the dosing pipe is provided with a dosing heavy hammer, the other end of the dosing pipe penetrates through the three-way valve to the geothermal well, the outer wall of the dosing pipe is provided with a sleeved protection pipe, the sleeved protection pipe is positioned at the three-way valve at the outlet of the well head, the right side of the three-way valve is provided with an output pipeline, and the output pipeline is sequentially provided with the well head control valve and, and a dosing heavy hammer is arranged at the bottom end of the dosing pipe positioned in the production well.
The medicine dispensing box is characterized in that a fan blade stirring rod is arranged in the medicine dispensing box, a transfer pump and a first valve are arranged on a pipeline between the medicine dispensing box and a medicine barrel, the number of the metering pumps is two, a second valve is arranged on a pipeline where each metering pump is located, a first temperature controller is arranged at one end of each first heating device, and a second temperature controller is arranged at one end of each second heating device.
The utility model discloses a concrete operating procedure as follows:
arranging medicines: adding the stock solution and desalted water in a ratio of 1:2 into a dispensing box, uniformly stirring the liquid for 15 minutes by a fan blade stirring rod arranged in the dispensing box, starting a transfer pump and a first valve after stirring is finished, and transferring the prepared diluent into a medicament barrel;
a drug delivery unit: opening a second valve, starting a metering pump and a medicament conveying disc, conveying the medicament to a downhole dosing position through a dosing pipe according to a set or given frequency, closing the medicament conveying disc, adjusting the dosing amount according to the residual concentration of the medicament, and repeating the operation; adjusting the first heating device and the second heating device according to the first temperature controller and the second temperature controller;
thirdly, stopping the dosing process: if the medicine adding device stops, the main production valve is closed first, the medicine is switched to desalted water, and the medicine adding can be stopped after the whole pipeline is filled with the desalted water.
The utility model discloses an actively beneficial effect is:
1. the utility model discloses the position that runs through the three-way valve at the pencil that adds is provided with the suit protection tube, through the repetition test, sets up the suit protection tube at the pencil outer wall that adds and makes the pencil avoid causing the cracked condition of wearing and tearing because of the horizontal impact force of rivers or the pencil that adds produces strong friction at tee bend department and pipe wall in the use, has improved the normal operating and the life of this system.
2. The utility model discloses be provided with the pencil weight of adding medicine in the bottom of pencil, prevent to strike because of underground geothermal water and lead to the unable degree of depth that reaches the requirement of pencil, make the performance drug effect that the medicine can be abundant.
3. The utility model discloses be provided with first heating device on the conveyer pipe between medicament bucket to the measuring pump, be provided with second heating device on the pipeline before the medicament delivery tray, guarantee through first temperature controller and second temperature controller that whole medicament delivery pipeline carries unobstructed, avoided the medicament of the easy geothermal power plant of similar sheep emergence because of the condition of the pipeline jam that the low temperature solidifies and causes.
4. The utility model discloses a medicament directly gets into the medicament bucket through the transfer pump, and the harm that causes human body and environment has been avoided splashing because of artifical improper operation medicament to whole inclosed environment that gets into.
5. The utility model discloses a method that the pipe is deep adds the medicament into geothermal well depths, makes the medicament can full play drug effect, and the continuous stable operation of unit has been guaranteed in the corruption of effectual reduction pipeline, the life-span of extension pipeline.
Fourthly, explanation of the attached drawings:
fig. 1 is a flow chart of the present invention.
The fifth embodiment is as follows:
the invention is further explained and illustrated by the figures and examples, without limiting the scope of the invention.
Example 1:
referring to fig. 1, the underground pipeline chemical feeding system of the geothermal well sequentially comprises a chemical dosing box 1, a chemical barrel 3, a chemical conveying unit and a steam-water separator 18 which are sequentially connected through a pipeline, wherein the chemical conveying unit comprises a first heating device 6, a metering pump 8, a second heating device 10, a chemical conveying disc 12, a chemical feeding pipe 13 and a well mouth control valve 17 which are sequentially connected through a pipeline, a three-way valve 15 is arranged above the well mouth, one end of the chemical feeding pipe 13 is fixedly connected with the chemical conveying disc 12, a chemical feeding heavy hammer 16 is arranged on the outer wall of the lower end of the chemical feeding pipe 9, the other end of the chemical feeding pipe 13 penetrates through the three-way valve 15 to the geothermal well, a sleeved protection pipe 14 is arranged on the outer wall of the chemical feeding pipe 13, the sleeved protection pipe 14 is positioned at the three-way valve 15 at the outlet of the well mouth, an output pipeline is arranged on the right side of the three, And a steam-water separator 18, wherein the bottom end of the dosing pipe 13 positioned in the production well is provided with a dosing heavy hammer 16.
A fan blade stirring rod 2 is arranged in the dosing box 1, a transfer pump 4 and a first valve 5 are arranged on a pipeline between the dosing box 1 and the medicament barrel 3, wherein: the number of the metering pumps 8 is two, a second valve 9 is respectively arranged on a pipeline where each metering pump 8 is located, a first temperature controller 7 is arranged at one end of the first heating device 6, and a second temperature controller 11 is arranged at one end of the second heating device 10.
Example 2:
the utility model discloses a concrete step as follows:
arranging medicines: adding the stock solution and desalted water in a ratio of 1:2 into a dosing box 1, uniformly stirring the liquid for 15 minutes by a fan blade stirring rod 2 arranged in the dosing box 1, starting a transfer pump 4 and a first valve 5 after stirring is finished, and transferring the prepared diluent into a medicament barrel 3;
a drug delivery unit: opening the second valve 9, starting the metering pump 8 and the medicament delivery tray 12, delivering the medicament to a downhole dosing position through a dosing pipe 13 according to a set or given frequency, closing the medicament delivery tray 12, adjusting the dosing amount according to the concentration of the residual medicament, and repeating the operation; adjusting the first heating device 6 and the second heating device 10 according to the first temperature controller 7 and the second temperature controller 11; the chemical feeding pipe 13 adopts a stainless steel coil pipe with the diameter of 8 multiplied by 2 and extends into the underground through a wellhead by a chemical feeding device; the sleeving protection tube 14 is a phi 57 multiplied by 3 stainless steel tube and is fixed on the upper and lower structures of the well mouth, so that the chemical feeding tube is prevented from swinging left and right due to the transverse impact force of water flow in the use process;
thirdly, stopping the dosing process: if the medicine adding device stops, the main production valve is closed first, the medicine is switched to desalted water, and the medicine adding can be stopped after the whole pipeline is filled with the desalted water.
Claims (2)
1. The utility model provides a geothermal well is pipeline medicine system in pit which characterized in that: the dosing system sequentially comprises a dosing box (1), a medicament barrel (3), a medicament conveying unit and a steam-water separator (18) which are sequentially connected through a pipeline, the medicament conveying unit comprises a first heating device (6), a metering pump (8), a second heating device (10), a medicament conveying disc (12), a dosing pipe (13) and a wellhead control valve (17) which are sequentially connected through a pipeline, a three-way valve (15) is arranged above a wellhead, one end of the dosing pipe (13) is fixedly connected with the medicament conveying disc (12), a dosing heavy hammer (16) is arranged on the outer wall of the lower end of the dosing pipe (13), the other end of the dosing pipe (13) penetrates through the three-way valve (15) to the geothermal well, a sleeving protection pipe (14) is arranged on the outer wall of the dosing pipe (13), and the sleeving protection pipe (14) is positioned at the outlet of the wellhead at the position of the three-way, an output pipeline is arranged on the right side of the three-way valve (15), a wellhead control valve (17) and a steam-water separator (18) are sequentially arranged on the output pipeline, and a dosing heavy hammer (16) is arranged at the bottom end of a dosing pipe (13) positioned in a production well.
2. The geothermal well downhole pipe dosing system of claim 1, wherein: the fan blade stirring rod (2) is arranged in the dosing box (1), a transfer pump (4) and a first valve (5) are arranged on a pipeline between the dosing box (1) and the medicament barrel (3), the number of the metering pumps (8) is two, a second valve (9) is arranged on a pipeline where each metering pump (8) is located, a first temperature controller (7) is arranged at one end of the first heating device (6), and a second temperature controller (11) is arranged at one end of the second heating device (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920317099.6U CN209908461U (en) | 2019-03-13 | 2019-03-13 | Geothermal well downhole pipeline dosing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920317099.6U CN209908461U (en) | 2019-03-13 | 2019-03-13 | Geothermal well downhole pipeline dosing system |
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| CN209908461U true CN209908461U (en) | 2020-01-07 |
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| CN201920317099.6U Active CN209908461U (en) | 2019-03-13 | 2019-03-13 | Geothermal well downhole pipeline dosing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056330A (en) * | 2019-03-13 | 2019-07-26 | 中国电建集团河南工程有限公司 | Geothermal well down-hole pipe medicine system and descaling method |
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2019
- 2019-03-13 CN CN201920317099.6U patent/CN209908461U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056330A (en) * | 2019-03-13 | 2019-07-26 | 中国电建集团河南工程有限公司 | Geothermal well down-hole pipe medicine system and descaling method |
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