Wellhead device of gas water-collecting well

Abstract

The utility model belongs to the technical field of coke oven gas conveying, and particularly relates to a wellhead device of a gas water-collecting well. The wellhead device of the coal gas water-collecting well comprises a mounting piece, a well head and a well head, wherein the mounting piece is provided with a first cavity communicated with the water-collecting well; at least part of the pipe plug is arranged in the first cavity, and a second cavity communicated with the first cavity is formed in the pipe plug; the supporting piece is arranged in the second cavity and is provided with a plurality of through holes; the adsorption piece is arranged in the second cavity and located above the supporting piece; the control valve is arranged at the end, deviating from the mounting piece, of the second cavity and used for controlling opening and closing of the end, deviating from the mounting piece, of the second cavity.

Description

Technical Field

[0001] This application belongs to the field of coke oven gas transportation technology, specifically relating to a wellhead device for a gas collection well. Background Technology

[0002] During the pipeline transportation of coke oven gas, as the gas temperature and pressure decrease, the saturated water contained in the gas is gradually precipitated out, forming condensate, which flows into the water collection well for storage along the gas pipeline.

[0003] However, coal gas condensate contains a variety of flammable, explosive, and volatile chemical substances such as tar, benzene, naphthalene, phenol, and sulfides, which can easily pose a safety hazard to workers who inhale chemical gases. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a wellhead device for a gas collection well, which aims to at least partially solve the technical problem that gas condensate contains a variety of flammable, explosive, and volatile chemical substances such as tar, benzene, naphthalene, phenol, and sulfides, posing a safety hazard to workers who may inhale these chemical gases.

[0005] The technical solution of this utility model is as follows:

[0006] A wellhead device for a gas collection well includes: an installation component having a first chamber communicating with the collection well; a plug having at least a portion disposed within the first chamber and having a second chamber communicating with the first chamber; a support component disposed within the second chamber and having multiple through holes; an adsorption component disposed within the second chamber and located above the support component; and a control valve disposed at the end of the second chamber away from the installation component, for controlling the opening and closing of the end of the second chamber away from the installation component.

[0007] In some embodiments, the control valve includes: a first valve plate disposed at the end of the second chamber opposite to the mounting member, and having at least one notch communicating with the second chamber; a second valve plate rotatably disposed on the first valve plate and switchable between a first position and a second position; wherein, when the second valve plate is in the first position, along the axial direction of the mounting member, the projection of the second valve plate on the mounting member is at least partially offset from the notch, and when the second valve plate is in the second position, along the axial direction of the mounting member, the projection of the second valve plate on the mounting member overlaps with the notch.

[0008] In some implementations, the second valve plate is provided with an operating element, which is located on opposite sides of the first valve plate.

[0009] In some embodiments, the plug includes: a first connecting portion inserted into the first chamber; and a second connecting portion connected to the first connecting portion and located outside the first chamber; wherein, along the axial direction of the mounting member, the cross-sectional area of ​​the first connecting portion matches the cross-sectional area of ​​the first chamber, and the cross-sectional area of ​​the second connecting portion is larger than the cross-sectional area of ​​the first chamber.

[0010] In some implementations, at least two sealing rings are provided between the first connection and the wall of the first chamber.

[0011] In some embodiments, the wellhead device of the gas collection well further includes a liquid level detection component, which includes: a float ball disposed in the first chamber; and a float rod that passes through the control valve, the adsorption element, and the support element in sequence and is connected to the float ball.

[0012] In some embodiments, the liquid level detection assembly includes: a sleeve fitted over the float and sequentially passing through the control valve, the adsorption element, and the support element, wherein the sleeve is connected to the control valve.

[0013] In some embodiments, the liquid level detection assembly includes: a transition sleeve connected to the sleeve and disposed in the first chamber; wherein the inner diameter of the transition sleeve matches the diameter of the float, and the diameter of the sleeve is larger than the diameter of the float.

[0014] In some embodiments, the liquid level detection assembly includes: an indicator connected at an angle to the float; and a scale connected to the plug and disposed opposite to the indicator.

[0015] In some embodiments, the wellhead device of the gas collection well further includes: an air cap, detachably connected to the pipe plug; wherein, along the axial direction of the mounting member, the cross-sectional area of ​​the air cap is larger than the cross-sectional area of ​​the mounting member.

[0016] The beneficial effects of this utility model include at least the following:

[0017] Because the mounting component has a first chamber communicating with the water collection well, condensate can flow into and be stored in the first chamber. Since the plug is at least partially located within the first chamber and has a second chamber communicating with it, the mounting component can accommodate and support the plug. Because the support component is located within the second chamber and has multiple through holes, the second chamber can accommodate and support the support component. The adsorbent component is located within the second chamber and above the support component; therefore, the support component can support the adsorbent component. When various flammable, explosive, and volatile chemical gases such as tar, benzene, naphthalene, phenol, and sulfides evaporate from the condensate, the chemical gases can enter the second chamber from the first chamber and reach the adsorbent component through the through holes. The adsorbent component adsorbs the chemical gases, reducing the possibility of workers inhaling them and ensuring worker safety. Simultaneously, the plug can seal the first chamber, reducing the possibility of chemical gases escaping from the first chamber and further ensuring worker safety.

[0018] Since the control valve is located at the end of the second chamber away from the mounting component, it is used to control the opening and closing of this end. Therefore, when it is necessary to observe or replace the adsorbent, the control valve is operated to open the end of the second chamber away from the mounting component. When it is not necessary to observe or replace the adsorbent, the control valve is operated to close the end of the second chamber away from the mounting component, so as to prevent the chemical gases not adsorbed by the adsorbent from escaping, further ensuring the safety of the staff. At the same time, it can shield the adsorbent, ensuring its safety, and prevent external debris from entering the second chamber, thus avoiding contamination of the condensate in the first chamber.

[0019] Because the control valve, adsorption element, and support element are spaced apart along the axial direction of the mounting component, they form multiple layers of protection to prevent external debris from entering the second chamber and to avoid contamination of the condensate in the first chamber. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the wellhead device of a gas water collection well according to some embodiments;

[0022] Figure 2 for Figure 1 A top view of the control valve of the wellhead device of a coal gas water gathering well;

[0023] Figure 3 for Figure 2A schematic diagram of the structure of the first valve plate of the central control valve;

[0024] Figure 4 for Figure 2 Schematic diagram of the structure of the second valve plate of the central control valve;

[0025] Figure 5 for Figure 1 A schematic diagram of the support components of the wellhead device for a coal gas water gathering well;

[0026] Figure 6 for Figure 1 A schematic diagram of the pipe plug structure of the wellhead device of a coal gas water gathering well;

[0027] Figure 7 for Figure 1 A schematic diagram of the installation components of the wellhead device for a coal gas water gathering well;

[0028] Figure 8 for Figure 1 A schematic diagram of the liquid level detection component at the wellhead of a coal gas water gathering well;

[0029] Figure 9 for Figure 1 A schematic diagram of the structure of the vent cap of the wellhead device for the coal gas water collection well.

[0030] In the attached image:

[0031] Mounting component 10, first chamber 11, body 12, base plate 13;

[0032] Plug 20, second chamber 21, first connecting part 22, second connecting part 23;

[0033] Support member 30, through hole 31;

[0034] Adsorption element 40;

[0035] Control valve 50, first valve plate 51, second valve plate 52, operating element 53;

[0036] Sealing ring 60;

[0037] Liquid level detection assembly 70, float 71, float rod 72, sleeve 73, spring washer 74, transition sleeve 75, indicator 76, limit component 77;

[0038] Hood 80, hat body 81, connector 82, butler 83. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] It should be noted that all directional indications in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0043] This application is described below with reference to the accompanying drawings and specific embodiments:

[0044] The wellhead device for a gas collection well provided in this embodiment aims to at least partially solve the technical problem of the safety hazard of workers inhaling chemical gases caused by the presence of various flammable, explosive, and volatile chemical substances such as tar, benzene, naphthalene, phenol, and sulfides in gas condensate.

[0045] Figure 1 This is a schematic diagram of the wellhead device of a gas water collection well according to some embodiments; Figure 5 for Figure 1 A schematic diagram of the support components for the wellhead assembly of a coal gas water gathering well. (Combined with...) Figure 1 and Figure 5The wellhead device of the gas collection well in this embodiment includes: a mounting component 10, a pipe plug 20, a support component 30, an adsorption component 40, and a control valve 50. The mounting component 10 has a first chamber 11 communicating with the collection well. The pipe plug 20 is at least partially disposed within the first chamber 11 and has a second chamber 21 communicating with the first chamber 11. The support component 30 is disposed within the second chamber 21 and has multiple through holes 31. The adsorption component 40 is disposed within the second chamber 21 and is located above the support component 30. The control valve 50 is located at the end of the second chamber 21 opposite to the mounting component 10 and is used to control the opening and closing of the end of the second chamber 21 opposite to the mounting component 10.

[0046] The adsorbent 40 can be made of activated carbon and zeolite. Activated carbon can store and adsorb organic matter (benzene, naphthalene, etc.), while zeolite can adsorb polar molecules (sulfides, tar, etc.).

[0047] Since the mounting component 10 has a first chamber 11 communicating with the water collection well, condensate can flow into and be stored in the first chamber 11. Since the pipe plug 20 is at least partially located within the first chamber 11 and has a second chamber 21 communicating with the first chamber 11, the mounting component 10 can accommodate and support the pipe plug 20. Since the support member 30 is located within the second chamber 21 and has multiple through holes 31, the second chamber 21 can accommodate and support the support member 30. The adsorbent 40 is located in the second chamber 21 and above the support 30. Therefore, the support 30 can support the adsorbent 40. When various flammable, explosive and volatile chemical gases such as tar, benzene, naphthalene, phenol, and sulfides are volatilized in the condensate, the chemical gases can enter the second chamber 21 from the first chamber 11 and reach the adsorbent 40 through the through hole 31. The adsorbent 40 adsorbs the chemical gases to reduce the possibility of workers inhaling the chemical gases and ensure the safety of the workers. At the same time, the plug 20 can seal the first chamber 11, reducing the possibility of chemical gases escaping from the first chamber 11 and further ensuring the safety of the workers.

[0048] Since the control valve 50 is located at the end of the second chamber 21 away from the mounting member 10, it is used to control the opening and closing of the end of the second chamber 21 away from the mounting member 10. Therefore, when it is necessary to observe or replace the adsorbent 40, the control valve 50 is operated to control the opening of the end of the second chamber 21 away from the mounting member 10. When it is not necessary to observe or replace the adsorbent 40, the control valve 50 is operated to control the closing of the end of the second chamber 21 away from the mounting member 10, so as to prevent the chemical gas not adsorbed by the adsorbent 40 from escaping, further ensuring the safety of the staff. At the same time, it can shield the adsorbent 40, ensuring the safety of the adsorbent 40, and prevent external debris from entering the second chamber 21, thus avoiding contamination of the condensate in the first chamber 11.

[0049] Since the control valve 50, the adsorption element 40 and the support element 30 are spaced apart along the axial direction of the mounting element 10, the control valve 50, the adsorption element 40 and the support element 30 can form multiple layers of protection to prevent external debris from entering the second chamber 21 and to avoid contamination of the condensate in the first chamber 11.

[0050] In some embodiments, in order to ensure the service life of the mounting component 10, the pipe plug 20, the support component 30, the adsorption component 40, and the control valve 50, the materials of the mounting component 10, the pipe plug 20, the support component 30, the adsorption component 40, and the control valve 50 can all be austenitic stainless steel to ensure the corrosion resistance of the mounting component 10, the pipe plug 20, the support component 30, the adsorption component 40, and the control valve 50.

[0051] Figure 2 for Figure 1 A top view of the control valve 50 of the wellhead device of the coal gas water gathering well; Figure 3 for Figure 2 A schematic diagram of the structure of the first valve plate of the central control valve; Figure 4 for Figure 2 A schematic diagram of the structure of the second valve plate of the central control valve. (Combined with...) Figure 1 , Figure 2 , Figure 3 and Figure 4 To enable the control valve 50 to control the opening and closing of the end of the second chamber 21 opposite to the mounting member 10, the control valve 50 includes a first valve plate 51 and a second valve plate 52. The first valve plate 51 is disposed at the end of the second chamber 21 opposite to the mounting member 10 and has at least one notch communicating with the second chamber 21. The second valve plate 52 is rotatably disposed on the first valve plate 51 and can switch between a first position and a second position. Specifically, when the second valve plate 52 is in the first position, along the axial direction of the mounting member 10, the projection of the second valve plate 52 on the mounting member 10 is at least partially offset from the notch; when the second valve plate 52 is in the first position, along the axial direction of the mounting member 10, the projection of the second valve plate 52 on the mounting member 10 overlaps with the notch.

[0052] When it is necessary to observe or replace the adsorption element 40, the second valve plate 52 rotates on the first valve plate 51 so that the second valve plate 52 reaches the first position. At this time, along the axial direction of the mounting part 10, the projection of the second valve plate 52 on the mounting part 10 is at least partially offset from the notch so that the notch is opened and the operator can observe or replace the adsorption element 40 through the notch.

[0053] When the adsorbent 40 does not need to be observed or replaced, the second valve plate 52 rotates on the first valve plate 51 to reach the second position. At this time, along the axial direction of the mounting member 10, the projection of the second valve plate 52 on the mounting member 10 overlaps with the notch. The second valve plate 52 closes the notch to prevent the chemical gas not adsorbed by the adsorbent 40 from escaping, further ensuring the safety of the staff. At the same time, it can shield the adsorbent 40 to ensure its safety, and prevent external debris from entering the second chamber 21, thus preventing the condensate in the first chamber 11 from being contaminated.

[0054] In some embodiments, in order to facilitate the operation of the second valve plate 52, an operating member 53 is provided on the second valve plate 52. The operating member 53 and the first valve plate 51 are respectively located on opposite sides of the second valve plate 52. The operator can rotate the second valve plate 52 by operating the operating member 53, thereby switching the second valve plate 52 between the first position and the second position.

[0055] In some embodiments, the operating member 52 is set at an angle to the second valve plate 53. The included angle between the operating member 52 and the second valve plate 53 can be set from 45° to 135°. In this embodiment, the included angle between the operating member 52 and the second valve plate 53 is 90°, that is, the operating member 52 and the second valve plate 53 are set perpendicularly. This should not be construed as a limitation of this application.

[0056] Figure 6 for Figure 1 A schematic diagram of the pipe plug structure of the wellhead device in a coal gas gathering well. (Combined with...) Figure 1 and Figure 6 In some embodiments, to facilitate the installation of the plug 20 within the first chamber 11, the plug 20 includes a first connecting portion 22 and a second connecting portion 23. The first connecting portion 22 is inserted into the first chamber 11. The second connecting portion 23 is connected to the first connecting portion 22 and is located outside the first chamber 11. The first connecting portion 22 and the second connecting portion 23 can be cylindrical. Along the axial direction of the mounting member 10, the cross-sectional area of ​​the first connecting portion 22 matches the cross-sectional area of ​​the first chamber 11, and the cross-sectional area of ​​the second connecting portion 23 is larger than the cross-sectional area of ​​the first chamber 11.

[0057] When the tube plug 20 is to be installed, the first connecting part 22 is inserted into the first chamber 11. During the process of inserting the first connecting part 22 into the first chamber 11, since the cross-sectional area of ​​the second connecting part 23 is larger than the cross-sectional area of ​​the first chamber 11, the cavity wall of the first chamber 11 can abut against the second connecting part 23 to limit the second connecting part 23. At the same time, it can support the second connecting part 23. No screws or other operations are required, which reduces the installation difficulty and steps and improves the installation efficiency, so that the tube plug 20 can be installed in the first chamber 11.

[0058] Of course, in some other embodiments, the second connection 23 can be connected to the cavity wall of the first chamber 11 by bolts.

[0059] In some embodiments, to further reduce the possibility of workers inhaling chemical gases, at least two sealing rings 60 are provided between the first connecting portion 22 and the pipe wall of the first chamber 11. The sealing rings 60 seal the gap between the first connecting portion 22 and the pipe wall of the first chamber 11, reducing the possibility of leakage from this gap and thus minimizing the possibility of chemical gases escaping from the first chamber 11, ensuring worker safety. The sealing rings 60 can be O-rings, and the material can be rubber.

[0060] In some embodiments, a plurality of sealing rings 60 are spaced apart along the axial direction of the mounting member 10.

[0061] Figure 7 for Figure 1 A schematic diagram of the installation components of the wellhead device for a coal gas water gathering well. (Combined with...) Figure 1 and Figure 7 In some embodiments, the mounting component 10 includes a body 12 and a base plate 13. The body 12 is disposed on the base plate 13 and supported by the base plate 13. A first chamber 11 passes through the body 12 and the base plate 13. The body 12 may be cylindrical.

[0062] Figure 8 for Figure 1 A schematic diagram of the liquid level detection component at the wellhead of a coal gas gathering well. (Combined with...) Figure 1 and Figure 8 In some embodiments, to obtain the liquid level within the first chamber 11, the wellhead device of the gas collection well further includes a liquid level detection component 70, which includes a float 71 and a float rod 72. The float 71 is disposed within the first chamber 11. The float rod 72 passes sequentially through the control valve 50, the adsorption member 40, and the support member 30, and is connected to the float 71.

[0063] When condensate enters the first chamber 11, the condensate will cause the float 71 to move axially along the mounting part 10. The float 71 will cause the float rod 72 to move axially along the mounting part 10. By observing the rise and fall of the part of the float rod 72 located outside the second chamber 21, the staff can know the liquid level in the first chamber 11. This makes it convenient to obtain the liquid level in the first chamber 11. Moreover, the staff does not need to probe into the water collection well to observe, which reduces the possibility of the staff inhaling chemical gases and ensures the safety of the staff.

[0064] In some embodiments, to ensure the stability of the float 72's axial movement along the mounting member 10, the liquid level detection assembly 70 includes a sleeve 73. The sleeve 73 is fitted onto the float 72 and sequentially passes through the control valve 50, the suction member 40, and the support member 30. The sleeve 73 restricts the movement of the float 72 through its wall to prevent tilting and jamming, ensuring the float 72 can move smoothly along the axial direction of the mounting member 10 and guaranteeing the accuracy of the liquid level reading in the first chamber 11. The float 72 can be made of austenitic stainless steel to ensure its corrosion resistance and service life.

[0065] Since the sleeve 73 is connected to the control valve 50, the control valve 50 supports the sleeve 73 to ensure the stability of the sleeve 73 installation.

[0066] In some embodiments, to connect the sleeve 73 to the control valve 50, the control valve 50 has a through hole, and the sleeve 73 is provided with a limiting member 77. Along the axial direction of the mounting member 10, the cross-sectional area of ​​the limiting member 77 is larger than the cross-sectional area of ​​the through hole, so that the limiting member 77 can abut against the control valve 50. The control valve 50 can support the limiting member 77 to prevent the sleeve 73 from falling off, thus realizing the installation of the sleeve 73. The limiting member 77 can be a nut.

[0067] In some embodiments, to avoid hard contact between the limiting member 77 and the control valve 50, a spring washer 74 is provided between the limiting member 77 and the control valve 50, which ensures the service life of the limiting member 77 and the control valve 50.

[0068] In some embodiments, to reduce the possibility of chemical gas escape, the liquid level detection assembly 70 includes a transition sleeve 75. The transition sleeve 75 is connected to the sleeve 73 and is disposed within the first chamber 11. The inner diameter of the transition sleeve 75 matches the diameter of the float 72, and the diameter of the sleeve 73 is larger than the diameter of the float 72. The transition sleeve 75 may be made of brass.

[0069] To ensure smooth operation of the float 72 within the sleeve 73, the diameter of the sleeve 73 is larger than that of the float 72, reducing the possibility of the sleeve wall interfering with the operation of the float 72. However, because the diameter of the sleeve 73 is larger than that of the float 72, the gap between the sleeve 73 and the float 72 is relatively large, allowing chemical gases to escape through this gap. Since the inner diameter of the transition sleeve 75 matches the diameter of the float 72, the gap between the transition sleeve 75 and the float 72 can be reduced, thus minimizing the possibility of chemical gas escape. Even if some chemical gas does escape, the small gap between the transition sleeve 75 and the float 72 results in a smaller amount of gas escaping, ensuring the safety of the personnel.

[0070] In some embodiments, to obtain the liquid level value within the first chamber 11, the liquid level detection assembly 70 includes an indicator 76 and a scale. The indicator 76 is connected at an angle to the float 72. The scale is connected to the pipe plug 20 and is positioned opposite to the indicator 76. The indicator 76 may be made of red acrylic glass with an indicating arrow, providing a clear visual indication to personnel.

[0071] The float 71 drives the float rod 72 to move, and the float rod 72 drives the indicator 76 to move so that the indicator 76 is aligned with the scale. By reading the scale, the liquid level value in the first chamber 11 can be obtained.

[0072] In some embodiments, the included angle between the indicator 76 and the float 72 can be set from 45° to 135°. In this embodiment, the included angle between the indicator 76 and the float 72 is 90°, that is, the indicator 76 and the float 72 are set perpendicularly. This should not be construed as a limitation of this application.

[0073] Figure 9 for Figure 1 A schematic diagram of the ventilation cap structure of the wellhead device for a coal gas water gathering well. (Combined with...) Figure 1 and Figure 9 To prevent rainwater from entering the first chamber 11, the wellhead device of the gas collection well also includes a vent cap 80. The vent cap 80 is detachably connected to the pipe plug 20. Along the axial direction of the mounting member 10, the cross-sectional area of ​​the vent cap 80 is larger than the cross-sectional area of ​​the mounting member 10, and the vent cap 80 shields the second chamber 21 and the first chamber 11.

[0074] In some embodiments, the hood 80 includes a hood body 81, a connector 82, and a tube clamp 83. One end of the connector 82 is connected to the hood body 81, and the other end is connected to the tube clamp 83, which is connected to the tube plug 20 to support the hood body 81. Along the axial direction of the mounting member 10, the cross-sectional area of ​​the hood body 81 is larger than the cross-sectional area of ​​the mounting member 10.

[0075] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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, they should not be construed as limitations on this application.

[0076] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0077] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0078] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0079] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A wellhead device for a gas-water collection well, characterized in that, include: The mounting component has a first chamber that communicates with the water collection well; The plug is at least partially disposed within the first chamber, and a second chamber communicating with the first chamber is provided. A support member is disposed in the second cavity and has multiple through holes; An adsorption element is disposed within the second chamber and located above the support element; A control valve is located at the end of the second chamber opposite to the mounting member, and is used to control the opening and closing of the end of the second chamber opposite to the mounting member.

2. The wellhead device for a gas-water collection well according to claim 1, characterized in that, The control valve includes: A first valve plate is disposed at the end of the second chamber away from the mounting member, and has at least one notch communicating with the second chamber; The second valve plate is rotatably disposed on the first valve plate and can be switched between the first position and the second position; Wherein, when the second valve plate is located in the first position, along the axial direction of the mounting member, the projection of the second valve plate on the mounting member is at least partially offset from the notch; when the second valve plate is located in the second position, along the axial direction of the mounting member, the projection of the second valve plate on the mounting member overlaps with the notch.

3. The wellhead device for a gas-water collection well according to claim 2, characterized in that, An operating element is provided on the second valve plate, and the operating element and the first valve plate are respectively located on opposite sides of the second valve plate.

4. The wellhead device for a gas-water gathering well according to any one of claims 1-3, characterized in that, The plug includes: The first connecting part is inserted into the first cavity; The second connecting part is connected to the first connecting part and is located outside the first cavity; Along the axial direction of the mounting component, the cross-sectional area of ​​the first connecting portion matches the cross-sectional area of ​​the first chamber, and the cross-sectional area of ​​the second connecting portion is larger than the cross-sectional area of ​​the first chamber.

5. The wellhead device for a gas-water collection well according to claim 4, characterized in that, At least two sealing rings are provided between the first connecting part and the tube wall of the first chamber.

6. The wellhead device for a gas-water gathering well according to any one of claims 1-3, characterized in that, The wellhead device of the gas water collection well also includes a liquid level detection component, which includes: A float is located in the first chamber; A float rod is sequentially inserted through the control valve, the adsorption element, and the support element, and is connected to the float ball.

7. The wellhead device for a gas-water collection well according to claim 6, characterized in that, The liquid level detection component includes: A sleeve is fitted onto the float and sequentially passes through the control valve, the adsorption element, and the support element. The sleeve is connected to the control valve.

8. The wellhead device for a gas-water collection well according to claim 7, characterized in that, The liquid level detection component includes: A transition sleeve is connected to the sleeve and is disposed in the first cavity; The inner diameter of the transition sleeve matches the diameter of the float, and the diameter of the sleeve is larger than the diameter of the float.

9. The wellhead device for a gas-water collection well according to claim 6, characterized in that, The liquid level detection component includes: Indicator, connected at an angle to the float; A scale is connected to the tube plug and is positioned opposite to the indicator.

10. The wellhead device for a gas-water gathering well according to any one of claims 1-3, characterized in that, The wellhead device of the gas water collection well also includes: The vent cap is detachably connected to the tube plug; Wherein, along the axial direction of the mounting component, the cross-sectional area of ​​the wind cap is larger than the cross-sectional area of ​​the mounting component.

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