CN211158897U

CN211158897U - Geothermal well negative pressure recharging device

Info

Publication number: CN211158897U
Application number: CN201922034721.5U
Authority: CN
Inventors: 肖斌
Original assignee: Individual
Current assignee: Henan Ruidong New Energy Technology Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-08-04
Anticipated expiration: 2029-11-22

Abstract

The utility model relates to the technical field of geothermal wells, in particular to a geothermal well negative pressure recharging device, which comprises a geothermal well and a recharging well, wherein a pumping mechanism is arranged between the geothermal well and the recharging well, the output end of the pumping mechanism is connected with the recharging well through a water return pipe, the input end of the pumping mechanism is connected with a pumping pipe arranged at the inner side of the geothermal well, and a vacuum mechanism for generating negative pressure is fixedly connected at the bottom of the recharging well, can provide the protection to the vacuum pump, do benefit to hoisting device's life.

Description

Geothermal well negative pressure recharging device

Technical Field

The utility model relates to a geothermal well technical field specifically is a geothermal well negative pressure recharging device.

Background

Geothermal energy is renewable thermal energy from deep within the earth that results from the decay of the earth's molten magma and radioactive materials. The circulation of the deep underground water and the invasion of magma from an extremely deep place into the crust bring heat from deep underground to near surface. In order to ensure the long-term safe operation of water sources, stable underground water source supply is needed, so that the tail water of geothermal energy needs to be injected into underground aquifers, namely underground water artificial supply (recharge). By doing so, underground water sources can be supplemented, the water level can be adjusted, the balance of reserves can be maintained, the stored energy can be recharged, and cold and heat sources can be provided; the water head pressure of the aquifer can be maintained, and the ground settlement is prevented.

The hot water extracted from the deep geothermal well is required to be recharged into the exploited water layer through a recharging well after heat is extracted by the heat exchanger. At present, a pressurizing recharging mode is mainly adopted in the industry, and hot water extracted from a production well is recharged to a production layer by increasing the pressure of hot water after heat exchange after heat is extracted by a heat exchanger. The recharging mode can cause the problems of increasing the recharging pressure year by year and reducing the recharging efficiency, and long-time operation can cause the damage of the stratum structure and the paralysis of the recharging system, so that the development of a geothermal well negative pressure recharging device is urgently needed to overcome the defects in the current practical application.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a geothermal well negative pressure recharging device to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a geothermal well negative pressure recharging device, includes geothermal well and recharging well, be provided with the mechanism of drawing water between geothermal well and the recharging well, it is connected through the wet return between mechanism output and the recharging well to draw water, it is connected with the water pumping pipe that sets up at the geothermal well inboard to draw water the mechanism input, recharging well bottom fixed connection is provided with the vacuum mechanism that is used for producing the negative pressure.

As a further aspect of the present invention: the water pumping mechanism comprises a shell, a water pump is arranged on the inner side of the shell in a bolted connection mode, the input end of the water pump is connected with a water pumping pipe, the output end of the water pump is connected with a water inlet pipe, the other end of the water inlet pipe is connected with a filter arranged on the inner side of the shell, a heat exchanger connected with a shell bolt is arranged on the left side of the filter, the heat exchanger is connected with the filter through a water outlet pipe, a water storage tank connected with the shell in a bolted connection mode is arranged on the left side of the heat exchanger, the water storage tank is.

As a further aspect of the present invention: the filter is characterized in that a dust collection box is arranged at the bottom end of the inner side of the filter in a clamped mode, a filter frame is fixedly connected to the top of the left end of the dust collection box, a filter screen is detachably connected and arranged in the filter frame, the filter frame is obliquely arranged, a partition plate is arranged on the left side of the filter frame, the top of the partition plate is fixedly connected with the filter, baffle plates are fixedly connected to the left and right sides of the partition plate, and a settling box is arranged on the lower side of the partition plate and.

As a further aspect of the present invention: the vacuum mechanism comprises a vacuum box, the vacuum box is fixedly connected and arranged at the bottom of the recharging well, a vacuum pump is arranged at the top of the left end of the vacuum box in a bolted connection mode, the input end of the vacuum pump is connected with the vacuum box, the output end of the vacuum pump is connected with an exhaust pipe, a drain pipe is fixedly connected and arranged at the bottom of the vacuum box, and a second valve and a first valve are fixedly connected and arranged on the inner sides of the joints of the vacuum box, the drain pipe and the recharging well respectively.

As a further aspect of the present invention: and a waterproof shield fixedly connected with the vacuum box is arranged outside the vacuum pump.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the baffle plate is arranged, so that the flow velocity of water flow can be reduced, impurities in the water flow can be settled in the settling tank, and geothermal water can be filtered by arranging the filter screen, so that the extracted geothermal water is ensured to be purer;

2. by arranging the vacuum mechanism, negative pressure can be generated on the inner side of the vacuum box, so that the water pressure in geothermal water in the water storage tank is increased, and smooth recharge is ensured;

3. through setting up waterproof guard shield, can provide the protection to the vacuum pump, do benefit to hoisting device's life.

Drawings

FIG. 1 is a schematic structural diagram of a geothermal well negative pressure recharging device;

FIG. 2 is a schematic structural diagram of a filter in the geothermal well negative pressure refilling device;

fig. 3 is an enlarged schematic view of a portion a in fig. 1.

In the figure: 1-geothermal well, 2-water pumping pipe, 3-water pump, 4-shell, 5-filter, 6-heat exchanger, 7-water storage tank, 8-water return pipe, 9-filter plate, 10-recharging well, 11-exhaust pipe, 12-vacuum pump, 13-vacuum box, 14-drain pipe, 15-second valve, 16-first valve, 17-waterproof shield, 18-water inlet pipe, 19-dust collection box, 20-filter screen, 21-partition board, 22-baffle board, 23-settling box and 24-water outlet pipe.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

Example 1

Referring to fig. 1-3, in an embodiment of the present invention, a geothermal well negative pressure recharging device includes a geothermal well 1 and a recharging well 10, a pumping mechanism is disposed between the geothermal well 1 and the recharging well 10, an output end of the pumping mechanism is connected to the recharging well 10 through a water return pipe 8, an input end of the pumping mechanism is connected to a pumping pipe 2 disposed inside the geothermal well 1, and a vacuum mechanism for generating negative pressure is disposed at a bottom of the recharging well 10 in a fixed connection manner.

Example 2

In this embodiment, the mechanism of drawing water includes shell 4, the inboard bolted connection of shell 4 is provided with water pump 3, the 3 input of water pump is connected with drinking-water pipe 2, the 3 output of water pump is connected with inlet tube 18, the inlet tube 18 other end is connected with the filter 5 that sets up at shell 4 inboardly, 5 left sides of filter are provided with the heat exchanger 6 with 4 bolted connection of casing, be connected through outlet pipe 24 between heat exchanger 6 and the

filter

5, 6 left sides of heat exchanger are provided with the storage water tank 7 with 4 bolted connection of shell, pass through pipe connection between storage water tank 7 and the heat exchanger 6, 7 outputs of storage water tank are connected with wet return 5.

In this embodiment, the inboard bottom joint of filter 5 is provided with dust collection box 19, dust collection box 19 left end top fixed connection is provided with the filter frame, can dismantle the connection in the filter frame and be provided with filter screen 20, the filter frame slope sets up, the filter frame left side be provided with baffle 21, baffle 21 top and filter 5 fixed connection, the equal fixed connection in baffle 21 left and right sides is provided with baffling board 22, the baffle 21 downside sets up the setting tank 23 with filter 5 joint, through setting up baffling board 22, can reduce the velocity of flow, makes impurity in the rivers can subside in the setting tank 23, through setting up filter screen 20, can filter geothermal water, ensures that the geothermal water of extraction is more pure.

In this embodiment, the vacuum mechanism includes vacuum box 13, vacuum box 13 fixed connection sets up in recharging well 10 bottom, vacuum box 13 left end top bolted connection is provided with vacuum pump 12, vacuum pump 12 input is connected with vacuum box 13, vacuum pump 12 output is connected with blast pipe 11, vacuum box 13 bottom fixed connection is provided with drain pipe 14, vacuum box 13 is provided with second valve 15 and first valve 16 with drain pipe 14 and recharging well 10 junction inboard fixed connection respectively, through setting up the vacuum mechanism, can produce the negative pressure in vacuum box 13 inboard to make the water pressure increase in the geothermol power water in the storage water tank 7, ensure that the recharging is smooth.

In this embodiment, vacuum pump 12 outside is provided with the waterproof guard shield 17 with vacuum chamber 13 fixed connection, through setting up waterproof guard shield 17, can provide the protection to vacuum pump 12, does benefit to hoisting device's life.

In this embodiment, the filter plate 9 is clamped and arranged on the inner side of the top end of the recharging well 10.

This geothermal well negative pressure recharging device, through setting up baffling board 22, can reduce the velocity of flow of rivers, make impurity in the rivers can subside in the setting tank 23, through setting up filter screen 20, can filter by geothermal water, ensure that the geothermal water of extraction is purer, through setting up vacuum mechanism, can be in the inboard negative pressure that produces of vacuum chamber 13, thereby make the water pressure increase in the geothermal water in the storage water tank 7, ensure to recharge smoothly, through setting up waterproof guard shield 17, can provide the protection to vacuum pump 12, do benefit to hoisting device's life.

The utility model discloses a theory of operation is: the method comprises the steps of starting a water pump 3, pumping electric hot water out of the water pump 3 by using a water pumping pipe 2 located in a geothermal well 1, enabling pumped geothermal water to enter a filter 5, firstly filtering the geothermal water by a filter screen 20 in the filter 5, enabling impurities in the geothermal water to fall into a dust collection box 19, then slowing down the flow velocity of water under the action of a baffle plate 22, enabling the impurities in the filtered geothermal water to settle in a settling box 23, ensuring that the pumped geothermal water is purer, enabling the purified geothermal water to enter a heat exchanger 6 for heat exchange, enabling the purified geothermal water to enter a water storage tank 7 after the heat exchange, starting a vacuum pump 13, simultaneously closing a first valve 16 and a second valve 15, enabling negative pressure to be formed in the vacuum tank 13, then closing the vacuum pump 13, opening the first valve 16 and the second valve 15, increasing the water pressure in the geothermal water storage tank 7, and ensuring smooth recharge.

The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. The utility model provides a geothermal well negative pressure recharging device, includes geothermal well (1) and recharging well (10), its characterized in that, be provided with between geothermal well (1) and recharging well (10) and draw water the mechanism, draw water and be connected through wet return (8) between mechanism's output and recharging well (10), draw water the mechanism input and be connected with the drinking-water pipe (2) that set up in geothermal well (1) inboard, recharging well (10) bottom fixed connection is provided with the vacuum mechanism that is used for producing the negative pressure.

2. The geothermal well negative pressure recharging device of claim 1, wherein the water pumping mechanism comprises a housing (4), the inner side of the shell (4) is provided with a water pump (3) in a bolt connection way, the input end of the water pump (3) is connected with the water pumping pipe (2), the output end of the water pump (3) is connected with a water inlet pipe (18), the other end of the water inlet pipe (18) is connected with a filter (5) arranged on the inner side of the shell (4), the left side of the filter (5) is provided with a heat exchanger (6) which is connected with the shell (4) by bolts, the heat exchanger (6) is connected with the filter (5) through a water outlet pipe (24), a water storage tank (7) which is connected with the shell (4) through a bolt is arranged on the left side of the heat exchanger (6), the water storage tank (7) is connected with the heat exchanger (6) through a guide pipe, and the output end of the water storage tank (7) is connected with the water return pipe (8).

3. The geothermal well negative pressure recharging device according to claim 2, wherein a dust collection box (19) is arranged at the bottom end of the inner side of the filter (5) in a clamped mode, a filter frame is fixedly connected to the top of the left end of the dust collection box (19), a filter screen (20) is detachably connected and arranged in the filter frame, the filter frame is arranged in an inclined mode, a partition plate (21) is arranged on the left side of the filter frame, the top end of the partition plate (21) is fixedly connected with the filter (5), baffle plates (22) are fixedly connected to the left side and the right side of the partition plate (21), and a settling box (23) is arranged on the lower side of the partition plate (21) in a clamped mode with the filter.

4. The geothermal well negative pressure recharging device according to claim 1, wherein the vacuum mechanism comprises a vacuum box (13), the vacuum box (13) is fixedly connected and arranged at the bottom of the recharging well (10), a vacuum pump (12) is arranged at the top of the left end of the vacuum box (13) in a bolted connection mode, the input end of the vacuum pump (12) is connected with the vacuum box (13), the output end of the vacuum pump (12) is connected with the exhaust pipe (11), a drain pipe (14) is fixedly connected and arranged at the bottom of the vacuum box (13), and a second valve (15) and a first valve (16) are respectively fixedly connected and arranged on the inner sides of the joints of the vacuum box (13) and the drain pipe (14) and the recharging well (10).

5. The geothermal well negative pressure recharging device according to claim 4, wherein a waterproof shield (17) fixedly connected with the vacuum box (13) is arranged outside the vacuum pump (12).