CN212299512U

CN212299512U - Anti-reflux wellhead device for middle-deep geothermal well

Info

Publication number: CN212299512U
Application number: CN202022213360.3U
Authority: CN
Inventors: 刘中成; 崔国华; 李吉武
Original assignee: Dongying Minghui New Energy Technology Co ltd
Current assignee: Dongying Minghui New Energy Technology Co ltd
Priority date: 2020-10-07
Filing date: 2020-10-07
Publication date: 2021-01-05
Anticipated expiration: 2030-10-07

Abstract

The utility model discloses a backflow prevention wellhead device for a middle-deep geothermal well, which comprises a one-way check valve arranged on a water supply pipeline in the wellhead and a branch pipe arranged on the wall of a deep well, wherein a backflow cavity is connected in series on the branch pipe There is a valve disc in the counter-flow cavity, a spring connecting rod is arranged at the bottom of the counter-flow cavity, and the spring connecting rod is elastically supported with the valve disc. , the upper end of the countercurrent cavity is connected with a copper pipe in parallel with the water supply pipeline on the left side of the one-way check valve, and the copper pipe is provided with a gate valve. The utility model will not be affected in any way, and the anti-backflow water of the whole system has been returned to the inside of the geothermal well, and it will not be backflowed or discharged through manual operation or a series of electric control devices like the existing geothermal wellhead.

Description

Anti-reflux wellhead device for middle-deep geothermal well

Technical Field

The utility model relates to a wellhead assembly, concretely relates to well deep geothermal well anti-reflux wellhead assembly.

Background

At present, no special countercurrent-preventing device is arranged in a deep geothermal well head device, so that when the electric submersible pump of the deep well stops running or the water pump breaks down, water in a pipeline system completely flows against the countercurrent, a large amount of water countercurrent and impurities in the pipeline violently impact the electric submersible pump of the geothermal well, and the service life of the electric submersible pump can be shortened and the end of the service life of the electric submersible pump can be ended after multiple times of impact. The existing individual system is only provided with a check valve to control the backflow of system pipeline water, the water in the geothermal well system pipeline can only be remained in the pipeline due to the arrangement of the check valve, the water cannot be discharged in non-heating seasons, the pipeline is corroded, and the pollution to the surrounding environment of the geothermal well is caused due to manual discharge.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a well head device is prevented against current by the middle and deep geothermal well against current to the defect that prior art exists.

The technical scheme is as follows: well deep geothermal well anti-reflux wellhead assembly, the lateral pipe that is equipped with on the one-way check valve that is equipped with on the water supply line in the well head and the deep well wall of a well, concatenate on the lateral pipe and be equipped with the cavity against the current, be equipped with the valve clack in the cavity against the current, the bottom of cavity against the current is equipped with spring connecting rod, spring connecting rod and valve clack elastic support are connected, the right-hand member of cavity against the current leads to pipe to connect in parallel on the one-way check valve right side water supply line, be connected with the copper pipe on the cavity against the current.

Preferably, the branch pipe is provided with a butterfly valve positioned on the left side of the reverse flow cavity, and the water supply pipeline is provided with a second butterfly valve positioned on the left side of the one-way check valve.

Preferably, be equipped with the manometer on the water supply line and the thermometer is located one-way check valve's right side, still is equipped with hole for hoist, water level measurement hole, pressure release exhaust hole and cable hole on the wellhead assembly.

Preferably, a sealing ring is arranged at the joint of the valve flap of the countercurrent cavity and the right water pipe of the countercurrent cavity.

Compared with the prior art, the utility model, have following advantage: by adopting the device, the phenomenon of impeller blockage caused by that impurities in a geothermal water supply pipeline cannot flow back into a high-temperature electric submersible pump can be prevented, the electric submersible pump is not impacted due to a large amount of water backflow, the water backflow time of a long distance on the water supply pipeline without the device is difficult to control, the circulating water pump needs to wait for a very long time when being restarted, and otherwise, the motor is burnt down due to the load of the electric submersible pump caused by the large difference of the backflow water. The system can not be influenced, the anti-backflow water of the whole system returns to the interior of the geothermal well, and the anti-backflow water can not flow back or be discharged outside through manual operation or a series of electric control devices like the existing geothermal well head.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Detailed Description

Referring to fig. 1, well deep geothermal well prevents wellhead assembly against current, lateral pipe 2 that is equipped with on the one-way check valve 1 that is equipped with on the water supply line in the well head and the deep well wall of a well on, it is equipped with cavity 4 against the current to concatenate on the lateral pipe 2, be equipped with valve clack 6 in the cavity 4 against the current, the bottom of cavity 4 against the current is equipped with spring connecting rod 5, spring connecting rod 5 is connected with 6 elastic support of valve clack, the right-hand member of cavity 4 against the current leads to pipe and connects in parallel on the 1 right side delivery pipe of one-way check valve, be connected with on the 1 left side delivery pipe of copper.

Be equipped with butterfly valve 3 on the bleeder 2 and be located the left side of cavity 4 against current, be equipped with the left side that second butterfly valve 8 is located one-way check valve 1 on the water supply line.

Be equipped with manometer 10 and thermometer 9 on the water supply line and be located one-way check valve 1's right side, still be equipped with hole for hoist 11, water level measuring hole 12, pressure release exhaust hole 13 and cable hole 14 on the wellhead assembly.

And a sealing ring 7 is arranged at the joint of the valve clack 6 of the countercurrent cavity 4 and the right water pipe thereof.

The working principle is as follows: the deep geothermal well utilizes a high-temperature electric submersible pump installed in the geothermal well, and is connected with a wellhead device through a water pump lifting pipe in the geothermal well, and the wellhead device is connected with a water supply pipeline leading to a machine room. After the local thermoelectric submersible pump starts, water can pass through the water pump lifting pipe and pass through the well head device, most water can be carried to the heat supply computer lab through one-way check valve 1, few partial water can enter into in the cavity 4 against the current through gate valve 16 and the copper pipe 15 of installing at 1 front end of one-way valve, valve clack 6 reduces after the water pressure of cavity 4 inside reaches certain numerical value against the current, valve clack 6 reduces and is keeping off 4 imports of cavity against the current, geothermal water through the well head device this moment can not flow to cause the short circuit circulation in the geothermal well, valve clack 6 of cavity 4 inside is by spring connecting rod 5 jack-up against the current when the system breaks down, the water of cavity 4 inside against the current can pass through copper pipe 15 inside to the water pump lifting pipe against the current, the water of system's pipeline can get into in the geothermal well mouth.

Claims

1. Well deep geothermal well anti-reflux wellhead assembly, its characterized in that: one-way check valve (1) that are equipped with on the water supply line in the well head and lateral pipe (2) that are equipped with on the deep well wall of a well, it is equipped with cavity (4) against the current to concatenate on lateral pipe (2), be equipped with valve clack (6) in cavity (4) against the current, the bottom of cavity (4) is equipped with spring connecting rod (5) against the current, spring connecting rod (5) are connected with valve clack (6) elastic support, the right-hand member of cavity (4) against the current leads to pipe and connects in parallel on one-way check valve (1) right side water supply line, be connected with copper pipe (15) on the cavity (4) against the current and connect in parallel on one-way check valve (.

2. The anti-reflux wellhead device for the middle-deep geothermal well according to claim 1, characterized in that: be equipped with butterfly valve (3) on lateral pipe (2) and be located the left side of adverse current cavity (4), be equipped with second butterfly valve (8) on the water supply line and be located the left side of one-way check valve (1).

3. The anti-reflux wellhead device for the middle-deep geothermal well according to claim 1, characterized in that: be equipped with manometer (10) and thermometer (9) on the water supply line and be located the right side of one-way check valve (1), still be equipped with hole for hoist (11), water level measurement hole (12), pressure release exhaust hole (13) and cable hole (14) on the wellhead assembly.

4. The anti-reflux wellhead device for the middle-deep geothermal well according to claim 1, characterized in that: and a sealing ring (7) is arranged at the joint of the valve clack (6) of the countercurrent cavity (4) and the right water pipe thereof.