Gas-liquid mixed transportation device and system for natural gas extraction and forced liquid discharge and collection

Abstract

The utility model discloses a gas-liquid mixed transportation device and system for natural gas extraction and forced liquid discharge and collection, and belongs to the field of natural gas extraction equipment. The gas-liquid mixed conveying device comprises a liquid inlet control valve, a liquid outlet control valve and a liquid outlet control valve, wherein the liquid inlet control valve is provided with a first liquid inlet hole and a first liquid outlet hole; the mixed transportation valve shell is provided with a second liquid inlet hole, a second liquid outlet hole, an air inlet and an air outlet, the second liquid inlet hole is communicated with the first liquid outlet hole, the position height of the second liquid inlet hole is lower than that of the first liquid outlet hole, and the second liquid outlet hole is communicated with the air outlet; the hollow pipe is rotationally arranged in the mixed transportation valve shell, the outer wall of the hollow pipe is in contact with the inner wall of the mixed transportation valve shell, a spiral blade is arranged on the inner wall of the hollow pipe, the two ends of the hollow pipe are communicated with the air inlet and the air outlet respectively, and a liquid storage tank is arranged on the outer wall of the hollow pipe. According to the gas-liquid mixed conveying device, gas-liquid mixing is achieved through energy of airflow, and a power source does not need to be independently arranged for liquid conveying.

Description

Technical Field

[0001] This utility model belongs to the field of natural gas extraction equipment, and in particular relates to a gas-liquid mixed transportation device and system for forced drainage and liquid collection in natural gas extraction. Background Technology

[0002] As gas wells continue to produce and remain in operation for longer periods, the bottomhole pressure decreases, leading to a continuous increase in wells unable to produce due to fluid accumulation in the wellbore, severely impacting effective gas production. For gas wells with casing pressure below 2 MPa, the main countermeasure currently adopted is forced drainage and fluid recovery. This involves reducing the transmission pressure and increasing the wellbore pressure differential to promote well resumption of production. During forced drainage and fluid recovery, the liquid that has already had light hydrocarbons separated from it in the atmospheric pressure storage tank is mixed with natural gas and fed into combustion equipment. The energy from the combustion of natural gas is used to evaporate the liquid. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a gas-liquid mixing and transportation device and system for forced drainage and liquid collection in natural gas extraction, which can mix liquid and natural gas before output.

[0004] This utility model is achieved through the following technical solution:

[0005] The first aspect of this utility model discloses a gas-liquid mixing and transportation device for forced drainage and liquid collection in natural gas extraction, comprising:

[0006] A liquid inlet control valve, wherein the liquid inlet control valve has a first liquid inlet port and a first liquid outlet port;

[0007] A mixing valve housing, wherein the mixing valve housing is provided with a second liquid inlet, a second liquid outlet, an air inlet, and an air outlet, the second liquid inlet is connected to the first liquid outlet, the position height of the second liquid inlet is lower than the position height of the first liquid outlet, and the second liquid outlet is connected to the air outlet.

[0008] A hollow tube is rotatably disposed inside the mixing valve housing. The outer wall of the hollow tube is in contact with the inner wall of the mixing valve housing. The inner wall of the hollow tube is provided with helical blades. The two ends of the hollow tube are respectively connected to an air inlet and an air outlet. The outer wall of the hollow tube is provided with a liquid storage tank. The liquid storage tank, the second liquid inlet, and the second liquid outlet are at the same height.

[0009] Furthermore, the liquid inlet control valve includes a valve body, a float, and a sealing valve. The valve body has a first liquid inlet hole on its side wall and a first liquid outlet hole at its bottom. The float is disposed inside the valve body, and the sealing valve is disposed in the first liquid outlet hole. The sealing valve is connected to the bottom of the float.

[0010] Furthermore, the sealing valve is a labyrinth seal.

[0011] Furthermore, the gas-liquid mixing and conveying device also includes an air inlet connector and an air outlet connector. The air inlet connector is connected to the air inlet of the mixing and conveying valve housing, and the air outlet connector is connected to the air outlet of the mixing and conveying valve housing.

[0012] Furthermore, the gas-liquid mixing and conveying device also includes a support housing, on which a third liquid inlet hole is provided, the third liquid inlet hole is connected to a first liquid outlet hole, the mixing and conveying valve housing is located inside the support housing, the air inlet connector and the air outlet connector are fixed on the support housing, and the air inlet connector and the air outlet connector extend to the outside of the support housing.

[0013] Furthermore, the top of the bracket housing is provided with a first mounting hole, the bottom of the bracket housing is provided with a second mounting hole, the air inlet connector is fixed in the first mounting hole, the air outlet connector is fixed in the second mounting hole, and a sealing ring is provided between the air outlet connector and the second mounting hole.

[0014] Furthermore, the hollow tube is rotatably mounted inside the mixing valve housing via a bearing.

[0015] The second aspect of this utility model discloses a gas-liquid mixing and transportation system for forced drainage and liquid collection in natural gas extraction, including a storage tank, a gas source, and a gas-liquid mixing and transportation device as described in the first aspect of this utility model. The gas-liquid mixing and transportation device is fixed in the storage tank, and the outlet of the gas source is connected to the inlet of the gas-liquid mixing and transportation device.

[0016] Compared with the prior art, this utility model has the following advantages and beneficial effects: the gas-liquid mixing device of this utility model can send the liquid to the gas outlet and mix it with the airflow under the action of the airflow, and realize the gas-liquid mixing by utilizing the energy of the airflow, without the need to configure a separate power source for liquid transportation. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of a gas-liquid mixing and transporting device according to the present invention;

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0021] Figure 4 for Figure 1 Enlarged view of point C in the middle;

[0022] In the figure, 1—inlet control valve, 11—first inlet hole, 12—first outlet hole, 13—valve body, 14—float, 15—sealing valve, 2—mixing valve body, 21—second inlet hole, 22—second outlet hole, 3—hollow tube, 31—storage tank, 32—spiral blade, 33—bearing, 4—air inlet connector, 5—air outlet connector, 6—support body, 61—sealing ring. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0025] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] like Figures 1 to 3 As shown, this utility model discloses a gas-liquid mixed transportation device and system for forced drainage and liquid collection in natural gas extraction.

[0028] The first aspect of this embodiment discloses a gas-liquid mixing and transportation device for forced drainage and liquid collection in natural gas extraction, such as... Figure 1As shown, the gas-liquid mixing and conveying device includes a liquid inlet control valve 1, a mixing and conveying valve housing 2, and a hollow tube 3.

[0029] The liquid inlet control valve 1 has a first liquid inlet hole 11 and a first liquid outlet hole 12.

[0030] like Figure 2 and Figure 3 As shown, the mixing valve housing 2 is provided with a second liquid inlet 21, a second liquid outlet 22, an air inlet, and an air outlet. The second liquid inlet 21 is connected to the first liquid outlet 12. The position height of the second liquid inlet 21 is lower than that of the first liquid outlet 12. The second liquid outlet 22 is connected to the air outlet.

[0031] The hollow tube 3 is rotatably disposed inside the mixing valve housing 2. The outer wall of the hollow tube 3 is in contact with the inner wall of the mixing valve housing 2. The inner wall of the hollow tube 3 is provided with a spiral blade 32. The two ends of the hollow tube 3 are respectively connected to the air inlet and the air outlet. The outer wall of the hollow tube 3 is provided with a liquid storage tank 31. The liquid storage tank 31, the second liquid inlet 21 and the second liquid outlet 22 are at the same height.

[0032] When using the gas-liquid mixing device in this embodiment, the first liquid inlet 11 is connected to the liquid storage tank, and the air inlet is connected to the gas source. When the liquid inlet control valve 1 is opened, the liquid in the liquid storage tank flows sequentially through the first liquid inlet 11 and the first liquid outlet 12, and enters the second liquid inlet 21; the high-speed airflow from the gas source enters the hollow tube 3 through the air inlet, and when the airflow passes through the spiral blade 32, the pressure of the airflow drives the hollow tube 3 to rotate; when the liquid storage tank 31 rotates to the position connected to the second liquid inlet 21, the liquid in the second liquid inlet 21 enters the liquid storage tank 31; when the liquid storage tank 31 rotates to the position connected to the second liquid outlet 22, the liquid in the liquid storage tank 31 enters the second liquid outlet, and the liquid in the second liquid outlet 22 flows into the air outlet; when the airflow flows out from the air outlet, the airflow mixes with the liquid, and then the gas-liquid mixing device is output.

[0033] In some implementations of this embodiment, such as Figure 4 As shown, the liquid inlet control valve 1 includes a valve body 13, a float 14, and a sealing valve 15. The valve body 13 has a first liquid inlet hole 11 on its side wall and a first liquid outlet hole 12 at its bottom. The float 14 is located inside the valve body 13, and the sealing valve 15 is disposed in the first liquid outlet hole 12. The sealing valve 15 is connected to the bottom of the float 14.

[0034] In these embodiments, when the liquid level inside the valve housing 13 reaches a certain height, the float 14 rises, causing the sealing valve 15 to rise and open the first outlet hole 12. When the liquid level inside the valve housing 13 is too low, the sealing valve 15 descends, thereby sealing the first outlet hole 12. In these embodiments, the sealing valve 15 opens or seals the first outlet hole 12 according to the liquid level inside the valve housing 13, without the need for manual operation.

[0035] In some embodiments of this example, the sealing valve 15 is a labyrinth seal.

[0036] In some embodiments of this example, there are one or more liquid storage tanks 31. When there are multiple liquid storage tanks 31, all liquid storage tanks 31 are arranged radially around the outer wall of the hollow tube 3.

[0037] In some embodiments of this example, the gas-liquid mixing device further includes an air inlet connector 4 and an air outlet connector 5. The air inlet connector 4 is connected to the air inlet of the mixing valve housing 2, and the air outlet connector 5 is connected to the air outlet of the mixing valve housing 2.

[0038] In some embodiments of this example, the gas-liquid mixing device further includes a support housing 6, which has a third liquid inlet hole connected to a first liquid outlet hole 12. The mixing valve housing 2 is located inside the support housing 6. The air inlet connector 4 and the air outlet connector 5 are fixed on the support housing 6 and extend to the outside of the support housing 6.

[0039] In these embodiments, the third inlet hole is connected to the first outlet hole 12. When the first outlet hole 12 is opened, the external liquid enters the support housing 6. Since the mixing valve housing 2 is located inside the support housing 6, when the liquid level inside the support housing 6 reaches the position height of the second inlet hole 21, the liquid inside the support housing 6 enters the second inlet hole 21.

[0040] In some embodiments of this example, the top of the bracket housing 6 is provided with a first mounting hole, the bottom of the bracket housing 6 is provided with a second mounting hole, the air inlet connector 4 is fixed in the first mounting hole, the air outlet connector 5 is fixed in the second mounting hole, a sealing ring 61 is provided between the air inlet connector 4 and the first mounting hole, and a sealing ring 61 is provided between the air outlet connector 5 and the second mounting hole.

[0041] In these embodiments, by providing a sealing ring 61, good sealing between the air inlet connector 4 and the first mounting hole, and between the air outlet connector 5 and the second mounting hole, can be ensured.

[0042] In some embodiments of this example, the hollow tube 3 is rotatably disposed within the mixing valve housing 2 via a bearing 33.

[0043] The second aspect of this embodiment discloses a gas-liquid mixing and transportation system for forced drainage and liquid collection in natural gas extraction, including a storage tank, a gas source, and a gas-liquid mixing and transportation device as described in the first aspect of this embodiment. The gas-liquid mixing and transportation device is fixed in the storage tank, and the outlet of the gas source is connected to the inlet of the gas-liquid mixing and transportation device.

[0044] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A gas-liquid mixing and conveying device for forced drainage and liquid collection in natural gas extraction, characterized in that, include: A liquid inlet control valve, wherein the liquid inlet control valve has a first liquid inlet port and a first liquid outlet port; A mixing valve housing, wherein the mixing valve housing is provided with a second liquid inlet, a second liquid outlet, an air inlet, and an air outlet, the second liquid inlet is connected to the first liquid outlet, the position height of the second liquid inlet is lower than the position height of the first liquid outlet, and the second liquid outlet is connected to the air outlet. A hollow tube is rotatably disposed inside the mixing valve housing. The outer wall of the hollow tube is in contact with the inner wall of the mixing valve housing. The inner wall of the hollow tube is provided with helical blades. The two ends of the hollow tube are respectively connected to an air inlet and an air outlet. The outer wall of the hollow tube is provided with a liquid storage tank. The liquid storage tank, the second liquid inlet, and the second liquid outlet are at the same height.

2. The gas-liquid mixing and conveying device for forced drainage and liquid collection in natural gas extraction according to claim 1, characterized in that, The liquid inlet control valve includes a valve body, a float, and a sealing valve. The valve body has a first liquid inlet hole on its side wall and a first liquid outlet hole at its bottom. The float is disposed inside the valve body, and the sealing valve is disposed in the first liquid outlet hole and connected to the bottom of the float.

3. A gas-liquid mixing and conveying device for forced drainage and liquid collection in natural gas extraction according to claim 2, characterized in that, The sealing valve is a labyrinth seal.

4. A gas-liquid mixing and conveying device for forced drainage and liquid collection in natural gas extraction according to claim 1, characterized in that, The gas-liquid mixing and conveying device further includes an air inlet connector and an air outlet connector. The air inlet connector is connected to the air inlet of the mixing and conveying valve housing, and the air outlet connector is connected to the air outlet of the mixing and conveying valve housing.

5. A gas-liquid mixing and conveying device for forced drainage and liquid collection in natural gas extraction according to claim 4, characterized in that, The gas-liquid mixing and conveying device also includes a support housing, on which a third liquid inlet hole is provided, the third liquid inlet hole is connected to a first liquid outlet hole, the mixing and conveying valve housing is located inside the support housing, the air inlet connector and the air outlet connector are fixed on the support housing, and the air inlet connector and the air outlet connector extend to the outside of the support housing.

6. A gas-liquid mixing and conveying device for forced drainage and liquid collection in natural gas extraction according to claim 5, characterized in that, The top of the bracket housing is provided with a first mounting hole, and the bottom of the bracket housing is provided with a second mounting hole. The air inlet connector is fixed in the first mounting hole, and the air outlet connector is fixed in the second mounting hole. A sealing ring is provided between the air outlet connector and the second mounting hole.

7. A gas-liquid mixing and conveying device for forced drainage and liquid collection in natural gas extraction according to claim 1, characterized in that, The hollow tube is rotatably mounted inside the mixing valve housing via a bearing.

8. A gas-liquid mixed transportation system for forced drainage and liquid collection in natural gas extraction, characterized in that, It includes a liquid storage tank, a gas source, and a gas-liquid mixing and conveying device as described in any one of claims 1-7, wherein the gas-liquid mixing and conveying device is fixed in the liquid storage tank, and the gas outlet of the gas source is connected to the gas inlet of the gas-liquid mixing and conveying device.

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