Anti-corrosion gas production wellhead device and Christmas tree

Abstract

The invention relates to the technical field of gas production well mouths, in particular to an anti-corrosion gas production well mouth device and a Christmas tree, the anti-corrosion gas production well mouth device comprises a collection valve pipe and a connecting pipeline which is installed on one side of the collection valve pipe through a flange, a shell is arranged outside the connecting pipeline, and a first cleaning structure and a second cleaning structure which are used in cooperation are arranged in the shell; a connecting assembly is arranged between the cleaning structure I and the cleaning structure II; the first cleaning structure comprises a sleeve with the hollow interior. According to the anti-corrosion gas production wellhead device and the Christmas tree, the first cleaning structure generates pulse airflow through the reciprocating motion of the pressurizing piston in the casing pipe, the pulse airflow can directly act on impurities such as carbon deposition in the connecting pipeline with high impact force, and the impurities are impacted down from the inner wall of the pipeline and discharged. And the second cleaning structure intermittently knocks the outer wall of the pipeline through a knocking block, so that the pipeline vibrates, and attachments which cannot be completely removed through the pulse airflow can be further shaken off through vibration.

Description

Technical Field

[0001] This application relates to the field of gas wellhead technology, and in particular to corrosion-resistant gas wellhead devices and wellheads. Background Technology

[0002] Wellhead equipment and Christmas trees are key components of oil and gas extraction systems, responsible for controlling formation fluid production and regulating pressure and flow. Their long-term stable operation directly affects production safety and efficiency. However, in complex downhole environments, these devices face severe challenges: on the one hand, the produced medium often contains impurities such as sand, hydrates, paraffin, and salts, which easily deposit and scale in connecting pipes and other parts, leading to reduced flow cross-sections or even blockages, severely impacting production capacity; on the other hand, acidic components in the medium, highly salinized formation water, and external environmental corrosion continuously erode pipes and valves, causing risks such as wall thinning, pitting corrosion, and perforation, potentially leading to leaks or even safety accidents.

[0003] Over time, the accumulation of impurities such as sand, rust, and oil can clog pipelines, hindering gas or liquid flow, reducing gas and oil production efficiency, and in severe cases, even rendering equipment inoperable. Existing cleaning methods have many limitations; for example, traditional continuous gas flow cleaning is effective for loosely attached impurities, but it is insufficient for cleaning firmly attached impurities, and it is difficult to detect changes in the actual condition of the pipeline in real time, making predictive maintenance impossible. Therefore, corrosion-resistant gas wellhead devices and Christmas trees are proposed to address the aforementioned problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies and avoid serious pipeline residue, this application provides a corrosion-resistant gas wellhead device and a Christmas tree, which have advantages such as good anti-clogging effect and the ability to detect pipeline blockage and its condition during cleaning, thus solving the problems mentioned above.

[0005] This application provides corrosion-resistant gas wellhead equipment and Christmas tree, adopting the following technical solution: The corrosion-resistant gas wellhead device and production tree include a collection valve pipe and a connecting pipe with a flange installed on one side of the collection valve pipe. The connecting pipe is provided with a shell, and a cleaning structure one and a cleaning structure two for use are provided inside the shell. A connecting component is provided between the cleaning structure one and the cleaning structure two. The cleaning structure includes a hollow sleeve, one end of which is fixedly connected to the connecting pipe. A pressure boosting piston is slidably disposed inside the sleeve, and an adjusting rod connected to the connecting assembly is fixedly attached to one side of the pressure boosting piston. The second cleaning structure includes a guide tube 1 arranged from the outside to the inside and a reciprocating assembly. A guide tube 2 is installed at the end of the guide tube 1, and a guide component that works with the reciprocating assembly is installed inside the guide tube 2. The reciprocating assembly includes a reciprocating tube, and a reciprocating shaft is provided inside the reciprocating tube. A striking block and a guide ball 1 are respectively rotatably installed at both ends of the reciprocating shaft. A return spring 1 is installed on the outer surface of the reciprocating shaft. A guide surface that abuts against the guide ball 1 is provided on the inner side of the guide tube 1. A spiral guide groove is formed inside the reciprocating tube and surrounds its outer surface.

[0006] Optionally: the sleeve is obliquely arranged, and a guide rod and a buffer spring connected to the connecting assembly are provided at the end of the sleeve away from the connecting pipe, and the buffer spring is wrapped around the outside of the guide rod, wherein one end of the guide rod is fixed to the outer wall of the sleeve.

[0007] Optionally, the first guide tube, the second guide tube, and the reciprocating tube are all hollow, the guide surface is wavy and ring-shaped, and the reciprocating tube is sleeved on the outside of the connecting pipe.

[0008] Optionally: the striking block intermittently abuts against the outer wall of the connecting pipe, and the first guide ball rolls in cooperation with the wavy guide surface; the reciprocating shaft passes through the interior of the reciprocating tube; the guide includes a guide rod installed inside the second guide tube, the end of the guide rod is rotatably mounted with the second guide ball, and the second guide ball extends into the spiral guide groove and rolls in cooperation with its inner side to realize the reciprocating rotation of the reciprocating tube.

[0009] Optionally, the connecting assembly includes a guide rail fixedly disposed outside the connecting pipe, a slide block slidably mounted inside the guide rail, and a connector respectively connected to the adjusting rod and the reciprocating pipe on the slide block. The connector includes a rack slidably mounted inside the slide block, a connecting block and a connecting arm respectively mounted at both ends of the rack, the connecting block being connected to the adjusting rod and the guide rod respectively, and the guide rod penetrating inside the connecting block, and a connecting sleeve rotatably connected to the end of the reciprocating pipe being mounted at the end of the connecting arm.

[0010] Optional: The connecting assembly further includes a rotating shaft, the outer surface of which is fixed with a gear that meshes with the rack, and a support seat for limiting the rotation of the rotating shaft is bolted to the outer wall of the slide.

[0011] Optionally: Both the first cleaning structure and the second cleaning structure are provided with a detection mechanism, which consists of a detection component one and a detection component two; the detection component one includes a pointer fixed to the bottom side of the rotating shaft and a scale fixed to the bottom side of the slide block, with the pointer located above the scale.

[0012] Optionally, the detection component two includes a guide sleeve fixed to the outside of the sleeve, a guide rod slidably disposed inside the guide sleeve, and a mounting platform fixed to one end of the guide rod and rotatably connected to the end of the reciprocating pipe. A scale rod is disposed through the inside of the mounting platform. A roller that abuts against the outer surface of the connecting pipe is hinged to the bottom end of the scale rod. A reset spring two is installed on the outer surface of the scale rod.

[0013] Optional: An infusion assembly for use with and for protection of the guide rail is installed on the bottom side of the slide; The infusion assembly includes a pumping cylinder fixed to the bottom side of the slide, a pumping piston is provided inside the pumping cylinder, and a plug rod extending to the outside of the pumping cylinder is fixed to the outer wall of the pumping piston.

[0014] Optionally: an abutment block is installed at the bottom end of the stopper rod, two valve pipes are installed on the outer wall of the pumping cylinder, one of which is connected to the outer wall of the slide block, and a pressure spring connected to the bottom side of the pumping cylinder is installed on the outer surface of the stopper rod.

[0015] In summary, this application includes at least one of the following beneficial technical effects: 1. In this invention, the cleaning structure generates a pulsed airflow by reciprocating the pressurized piston inside the sleeve. The pulsed airflow can directly act on the carbon deposits and other impurities inside the connecting pipe with a strong impact force, knocking the impurities off the inner wall of the pipe and discharging them.

[0016] 2. In addition, the present invention utilizes the striking block of the second cleaning structure to intermittently strike the outer wall of the pipe, causing the pipe to vibrate. The vibration can further shake off the attachments that could not be completely removed by the pulse airflow. In particular, for some firmly attached impurities, the vibration generated by striking the outer wall can loosen and remove them.

[0017] 3. This invention uses a combination of pressurization and impact cleaning methods to clean the connecting pipes from both internal impact and external vibration perspectives, greatly improving cleaning efficiency and quality. It can effectively ensure the smooth flow of the connecting pipes, reduce the risk of impurities clogging and corroding the gas wellhead equipment and the wellhead, and extend the service life of the equipment.

[0018] 4. In the cleaning process, the position of the pointer on the dial can detect relevant parameters such as cleaning force and movement state. The cleaning force directly affects the cleaning effect. By detecting the cleaning force, the working parameters of cleaning structure one and cleaning structure two can be adjusted in time to ensure that the cleaning force is moderate, which can effectively remove impurities without damaging the connecting pipes.

[0019] 5. In the cleaning process, the relevant conditions of the connected pipes can be detected by observing the position change of the scale rod in the mounting platform. Since the different residual impurities in the pipes will affect the vibration characteristics of the pipes, the contact wheel contacts the surface of the pipes, and the vibration of the pipes will be transmitted to the contact wheel, causing it to vibrate up and down, i.e., rise and fall. The vibration amplitude can be detected by the connected scale rod, thereby indirectly judging the residual impurities and achieving the effect of cleaning and detection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a cross-sectional view of the shell structure of this application; Figure 3 This is a schematic diagram of the connecting pipe structure of this application; Figure 4 These are cross-sectional views of cleaned structure one and cleaned structure two of this application; Figure 5 This is a schematic diagram of the structure of the connecting component of this application; Figure 6 This is a cross-sectional view of the structure of structure two in this application; Figure 7 This is a cross-sectional view of the reciprocating component structure of this application; Figure 8 This is a cross-sectional view of the connecting component of this application; Figure 9 This is a cross-sectional view of the infusion assembly of this application.

[0021] Explanation of reference numerals in the attached figures: 1. Collection valve pipe; 2. Connecting pipe; 3. Cleaning structure one; 31. Sleeve; 32. Pressure boosting piston; 33. Adjusting rod; 34. Guide rod; 35. Buffer spring; 4. Cleaning structure two; 41. Guide tube one; 42. Guide tube two; 43. Reciprocating assembly; 431. Reciprocating tube; 432. Reciprocating shaft; 433. Impact block; 434. Guide ball one; 435. Return spring one; 44. Guide surface; 45. Guide rod; 46. Guide ball two; 47. Spiral guide groove; 5. Connecting assembly; 51. Guide rail; 52. Slide; 53. Rack; 54. Connecting block; 55. Rotating shaft; 56. Gear; 57. Support seat; 58. Connecting arm; 59. Connecting sleeve; 6. Detection component one; 61. Pointer; 62. Dial; 7. Detection component two; 71. Guide sleeve; 72. Guide rod; 73. Mounting platform; 74. Dial rod; 75. Roller; 76. Return spring two; 8. Infusion assembly; 81. Pumping cylinder; 82. Pumping piston; 83. Plug rod; 84. Valve tube; 85. Pressure spring; 86. Abutment block; 9. Housing. Detailed Implementation

[0022] The following is in conjunction with the appendix Figures 1-9 This application will be described in further detail.

[0023] Example 1, such as Figures 1-7 As shown, this is the first embodiment of the present invention. This embodiment provides a corrosion-resistant gas wellhead device and a Christmas tree, including a collection valve pipe 1 and a connecting pipe 2 with a flange installed on one side of the collection valve pipe 1. Specifically, the collection valve pipe 1 includes a valve body, a valve seat, and a multi-port pipe; wherein, the connecting pipe 2 is connected to one of the multi-port pipes; a valve is provided inside the valve body; a valve cover for strength is also provided on the valve body; it should be noted that both the collection valve pipe 1 and the connecting pipe 2 can be made of materials with good corrosion resistance. For example, in some highly corrosive oil and gas extraction environments, stainless steel may be used. Stainless steel contains elements such as chromium, which can form a dense oxide film on the surface, preventing further contact between corrosive media such as oxygen and water and the metal, thereby playing a role in corrosion prevention; or corrosion-resistant alloys, such as nickel-based alloys, can be used. These alloys have excellent resistance to erosion by various corrosive media, which can effectively extend the service life of pipes and valves. In addition, the surfaces of the collection valve pipe 1 and the connecting pipe 2 are specially treated to enhance corrosion resistance. For example, a coating treatment can be performed, where a metal coating such as zinc, nickel, or chromium is plated onto the surface. This coating can act as a sacrificial anode, being preferentially corroded, thus protecting the base metal. Alternatively, a coating treatment can be performed, where an anti-corrosion coating is applied to form an isolation layer that prevents corrosive media from contacting the metal surface. Common anti-corrosion coatings include epoxy resin coatings and polyurethane coatings.

[0024] In this embodiment, the connecting pipe 2 is externally equipped with a housing 9, and the housing 9 contains a first cleaning structure 3 and a second cleaning structure 4 for cooperative use. A connecting component 5 is provided between the first cleaning structure 3 and the second cleaning structure 4. It should be noted that during the operation of the gas wellhead device and the Christmas tree, some impurities, such as sand, rust, and oil, will inevitably enter the connecting pipe 2. If these impurities accumulate in the connecting pipe 2 over a long period, they will gradually clog the pipe, causing poor gas or liquid flow, affecting the efficiency of gas or oil production, and in severe cases, even causing the equipment to malfunction. The cleaning components allow you to promptly remove these impurities and ensure the unobstructed flow of the connecting pipe 2.

[0025] like Figures 2-4As shown, the cleaning structure 3 includes a hollow sleeve 31, one end of which is fixedly connected to the connecting pipe 2. A pressure boosting piston 32 is slidably disposed inside the sleeve 31, and an adjusting rod 33 connected to the connecting assembly 5 is fixedly disposed on one side of the pressure boosting piston 32. It should be noted that the pressure boosting piston 32, which is slidably disposed inside, can generate a pulse airflow when it reciprocates. The pulse airflow acts directly on the carbon deposits and other impurities inside the connecting pipe 2 with a strong impact force, knocking the impurities off the inner wall of the pipe and discharging them. Compared with the traditional continuous airflow cleaning method, the pulse airflow has a stronger instantaneous impact force, which is significantly effective in cleaning some loosely attached impurities. It can quickly and effectively remove most of the impurities in the pipe and ensure the initial unobstructed flow of the connecting pipe 2. Furthermore, a valve is installed at the connection between the sleeve 31 and the connecting pipe 2. In practical applications, the intensity and frequency of the pulse airflow can be controlled by adjusting the movement frequency and amplitude of the booster piston 32 according to the adhesion of impurities in the connecting pipe 2 and the cleaning requirements, so as to achieve precise cleaning. For example, when there are many impurities and the adhesion is thick, the movement amplitude and frequency of the booster piston 32 can be increased by adjusting the rod 33 to enhance the impact force of the pulse airflow. When there are few impurities and the adhesion is loose, the movement amplitude and frequency of the booster piston 32 can be appropriately reduced to save energy.

[0026] Specifically, such as Figure 3 As shown, the sleeve 31 is obliquely arranged. At the end of the sleeve 31 away from the connecting pipe 2, there is a guide rod 34 and a buffer spring 35 connected to the connecting assembly 5. The buffer spring 35 is wrapped around the outside of the guide rod 34. One end of the guide rod 34 is fixed to the outer wall of the sleeve 31. The installation of the buffer spring 35 plays a buffering role during the movement of the booster piston 32. When the booster piston 32 moves to the limit position, the buffer spring 35 can absorb part of the impact force and reduce the collision between the booster piston 32 and the end of the sleeve 31.

[0027] To further provide pipeline cleaning, such as Figures 3-7As shown, the cleaning structure 4 includes a guide tube 41 arranged from the outside to the inside and a reciprocating assembly 43. A guide tube 42 is installed at the end of the guide tube 41, and a guide component that works with the reciprocating assembly 43 is installed inside the guide tube 42. The reciprocating assembly 43 includes a reciprocating tube 431, and a reciprocating shaft 432 is arranged inside the reciprocating tube 431. A striking block 433 and a guide ball 434 are respectively rotatably installed at both ends of the reciprocating shaft 432. A return spring 435 is installed on the outer surface of the reciprocating shaft 432. A guide surface 44 that abuts against the guide ball 434 is provided on the inner side of the guide tube 41. A spiral guide groove 47 is opened inside the reciprocating tube 431 and surrounds its outer surface. The striking block 433 intermittently abuts against the outer wall of the connecting pipe 2, and the guide ball 434 rolls in cooperation with the wavy guide surface 44. The reciprocating shaft 432 passes through the interior of the reciprocating pipe 431. It should be noted that when the reciprocating shaft 432 moves back and forth under the action of the reciprocating component 43, the striking block 433 will intermittently strike the outer wall of the pipe, causing the pipe to vibrate. Through vibration, it can further shake off the attachments that were not completely removed by the pulse airflow. Especially for some firmly attached impurities, the vibration generated by striking the outer wall can loosen and remove them. This complements the pulse airflow cleaning of the cleaning structure 3, and comprehensively cleans the connecting pipe 2 from both internal impact and external vibration angles, greatly improving the cleaning effect. Furthermore, the cleaning structure 3 can be made of corrosion-resistant material, which can significantly extend the service life of the cleaning structure, reduce the frequency of replacement, thereby reducing equipment maintenance costs and downtime, and improving production efficiency. In addition, the material and shape of the striking block 433 can be selected according to the material of the connecting pipe 2 and the cleaning requirements. If the pipe material is hard, a striking block 433 with higher hardness can be selected to ensure the striking force; if the pipe material is soft, a striking block 433 with a softer material or a buffer layer can be selected to avoid damage to the pipe. At the same time, the shape of the striking block 433 can also be designed in different shapes to generate vibrations of different frequencies and intensities to meet different cleaning needs. Specifically, the guide pipe 41, the guide pipe 42, and the reciprocating pipe 431 are all hollow, and the reciprocating pipe 431 is fitted onto the outside of the connecting pipe 2.

[0028] To further improve the cleaning effect, such as Figure 5As shown, the guide includes a guide rod 45 installed inside the guide tube 42. A guide ball 46 is rotatably mounted at the end of the guide rod 45, and the guide ball 46 extends into the spiral guide groove 47 and rolls with its inner side to realize the reciprocating rotation of the reciprocating tube 431. In use, the spiral guide groove 47, which is set around the outer surface of the reciprocating tube 431, is opened inside the reciprocating tube 431. The guide surface 44 is wavy and ring-shaped, and rolls with the guide ball 46 at the end of the guide rod 45 inside the guide tube 42 to realize the reciprocating rotation of the reciprocating tube 431. The rotational movement allows the striking block 433 to strike the outer wall of the pipe around the circumference of the pipe, thereby expanding the cleaning coverage. Compared with single-direction striking, rotational striking can more comprehensively clean the attachments at all positions on the outer wall of the pipe, avoid cleaning dead corners, ensure the cleanliness of the outer wall of the connecting pipe 2, and further improve the effectiveness of the entire cleaning system. It should be noted that the pitch and depth of the spiral guide groove 47 can be adjusted according to actual cleaning needs. The larger the pitch, the longer the reciprocating distance required for the reciprocating tube 431 to rotate one revolution, and the slower the rotation speed; the smaller the pitch, the faster the rotation speed, the greater the depth, and the more stable the movement of the guide ball 46 in the groove, but the friction will also increase accordingly. Therefore, it is necessary to select an appropriate pitch and depth according to the actual situation to achieve the best cleaning effect and rotational stability.

[0029] like Figure 3 and Figure 4 As shown, the connecting assembly 5 includes a guide rail 51 fixedly installed outside the connecting pipe 2. The guide rail 51 is connected to the outer wall of the housing 9. A support frame can also be installed on the inner wall of the housing 9 to support the guide rail 51 and the second cleaning structure 4. Specifically, a slide block 52 is slidably installed inside the guide rail 51. The slide block 52 is provided with connecting parts that are respectively connected to the adjusting rod 33 and the reciprocating pipe 431. The connecting parts include a rack 53 slidably installed inside the slide block 52. A connecting block 54 and a connecting arm 58 are respectively installed at both ends of the rack 53. The connecting block 54 is connected to the adjusting rod 33 and the guide rod 34 respectively. The guide rod 34 passes through the interior of the connecting block 54. The adjusting rod 33 is threadedly connected to the connecting block 54, thereby adjusting the position of the booster piston 32 and thus adjusting the driving pressure of the booster piston 32. A connecting sleeve 59 is installed at the end of the connecting arm 58 and rotatably connected to the end of the reciprocating pipe 431. It should be noted that the slide block 52 can be detached and driven by an electric slide block or an external telescopic electric cylinder.

[0030] Specifically, the connecting component 5 also includes a rotating shaft 55, on the outer surface of which a gear 56 meshes with a rack 53. A support seat 57 for limiting the rotation of the rotating shaft 55 is bolted to the outer wall of the slide 52. In this embodiment, when the slide 52 moves on the guide rail 51, the power can be accurately transmitted to the first cleaning structure 3 and the second cleaning structure 4 through the meshing transmission of the gear 56 and the rack 53. The meshing transmission method has the characteristics of high transmission accuracy and good stability, which can ensure that the first cleaning structure 3 and the second cleaning structure 4 work according to the predetermined motion law, and ensure the consistency and reliability of the cleaning effect.

[0031] Example 2, as Figure 3 , Figure 5 and Figure 7 As shown, this is the second embodiment of the present invention, which differs from the first embodiment in that: both cleaning structure 3 and cleaning structure 4 are provided with a detection mechanism, wherein the detection mechanism is composed of detection component 6 and detection component 7; To achieve the detection of structure 3, such as Figure 5 As shown, the detection component 6 includes a pointer 61 fixed to the bottom side of the rotating shaft 55 and a scale 62 fixed to the bottom side of the slide 52, with the pointer 61 positioned above the scale 62. By observing the positional changes of the pointer 61 on the scale 62, it is possible to determine whether the working force of the cleaning structure 3 and the cleaning structure 4 is appropriate. Simultaneously, the detection of the motion state allows for assessment of the normal operation of each component of the cleaning structure, such as whether the slide 52 moves smoothly on the guide rail 51, and whether the rotation and axial displacement of the reciprocating tube 431 are stable. This enables timely detection and resolution of potential motion faults, ensuring the stable operation of the entire cleaning mechanism. It should be noted that the scale of dial 62 can be designed according to actual testing needs; the higher the scale accuracy, the more accurate the test results. Different colored areas or markings can also be set on dial 62 to distinguish different parameter ranges and states, facilitating quick reading and judgment of test results by operators. It should also be noted that under constant driving pressure, impurities in the pipeline will increase the resistance to the movement of the booster piston 32, causing it to slow down. However, the final stroke of the booster piston 32 is usually determined by mechanical limits or the control system, so the stroke remains relatively consistent, while the speed will vary depending on the amount of impurities remaining, thus achieving the desired cleaning and testing effect.

[0032] To further improve cleaning and detection, such as Figure 7As shown, the detection component 7 includes a guide sleeve 71 fixed to the outside of the sleeve 31, a guide rod 72 slidably disposed inside the guide sleeve 71, and a mounting platform 73 fixed to one end of the guide rod 72 and rotatably connected to the end of the reciprocating tube 431. A scale rod 74 is disposed through the inside of the mounting platform 73. A roller 75 is hinged to the bottom end of the scale rod 74 and abuts against the outer surface of the connecting pipe 2. A return spring 76 is installed on the outer surface of the scale rod 74. In this embodiment, when the connecting pipe 2 is deformed, the roller 75 will move up and down with the change of the pipe surface, driving the scale rod 74 to move within the mounting platform 73. By observing the position change of the scale rod 74 within the mounting platform 73, the deformation of the connecting pipe 2 can be accurately detected, the deformation problem of the pipe can be detected in time, and corresponding repair measures can be taken to avoid gas leakage and operational failure caused by pipe deformation. Furthermore, the varying degrees of impurity residue within the pipeline can affect its vibration characteristics. When there is a significant amount of impurity residue, the pipeline's mass distribution, stiffness, and other physical properties will change, resulting in different vibration amplitude and frequency parameters when subjected to the same excitation compared to when there is less or no impurity residue. Since the roller 75 is in contact with the pipeline surface, when the pipeline vibrates, the vibration is transmitted to the roller 75, causing it to vibrate up and down, i.e., rise and fall. Because the roller 75 is connected to components such as the mounting platform 73 via the scale rod 74, its up and down vibration will drive the scale rod 74 to move up and down within the mounting platform 73. By observing the distance the scale rod 74 moves, i.e., the vibration amplitude, the extent of impurity residue within the pipeline can be indirectly determined. If the vibration amplitude of the scale rod 74 is large, it indicates that the vibration of the pipeline is more intense, meaning that there are fewer impurities remaining in the pipeline, and the vibration characteristics of the pipeline are closer to the state when there are no impurities remaining. Conversely, if the vibration amplitude of the scale rod 74 is small, it may indicate that there are more impurities remaining in the pipeline, and the vibration of the pipeline is suppressed by the impurities, and the vibration characteristics have changed. In this way, the detection component 2 7 can be used in conjunction with the detection component 1 to enhance the detection of the impurities remaining in the pipeline.

[0033] Example 3, as Figure 8 and Figure 3As shown, this is the third embodiment of the present invention, which differs from the second embodiment in that: an infusion assembly 8 is installed on the bottom side of the slide 52 for use in conjunction with and for protecting the guide rail 51. During the cleaning process, some impurities and dust may be generated. If these impurities and dust enter the interior of the guide rail 51, they will affect the smoothness of the sliding of the slide 52, or even damage the guide rail 51 and the slide 52. The infusion assembly 8 delivers lubricating or cleaning fluid to the surface of the guide rail 51, forming a lubricating film or cleaning layer, reducing the adhesion of impurities and dust, protecting the guide rail 51 from wear and corrosion, and extending the service life of the guide rail 51. Alternatively, the infusion assembly 8 can be used for gas delivery and blowing operations, using a three-way pipe to connect to the storage tank and the gas delivery equipment (here it can be connected to the outside air, and the infusion assembly 8 directly draws in gas for blowing when it is working), to jointly achieve the cleaning of the guide rail 51.

[0034] Specifically, the infusion assembly 8 includes a pumping cylinder 81 fixed to the bottom side of the slide 52. A pumping piston 82 is provided inside the pumping cylinder 81, and a stopper rod 83 extending to the outside of the pumping cylinder 81 is fixed to the outer wall of the pumping piston 82. An abutment block 86 is installed at the bottom end of the stopper rod 83. Two valve tubes 84 are installed on the outer wall of the pumping cylinder 81, and one of the valve tubes 84 is connected to the outer wall of the slide 52. A pressure spring 85 connected to the bottom side of the pumping cylinder 81 is installed on the outer surface of the stopper rod 83. It should be noted that the slide 52 is hollow inside, and a spray hole is opened on the side near the guide rail 51. In conjunction with the pump piston 82 in the infusion assembly 8, it moves up and down, so that the abutment block 86 abuts against the ground or the table surface, driving the piston rod 83 and the pressure spring 85 to achieve automatic reciprocating motion without manual operation. This achieves lubrication or cleaning, thereby ensuring that the guide rail 51 is always in a good lubricated or clean state, reducing the workload and time cost of manual maintenance, and improving the operating efficiency and reliability of the equipment.

[0035] Combined with appendix Figures 1-9 The working principle of the above embodiments is as follows: First, the slide 52 in the connecting assembly 5 is moved along the guide rail 51 by pushing or pulling inside the housing 9. During the movement of the slide 52, the adjusting rod 33 is driven to move through the rack 53 and the connecting block 54. The adjusting rod 33 will push the booster piston 32 to slide in the inclined sleeve 31. Thus, the movement of the booster piston 32 will generate positive pressure impact on the sleeve 31 and the connecting pipe 2 connected to it, forming a fluid pulse, thereby loosening and expelling the impurities attached to the inner wall of the pipe. At the same time, the movement of the slide 52 simultaneously drives the reciprocating tube 431 to move axially along the outside of the connecting pipe 2 through the connecting arm 58 and the connecting sleeve 59. When the reciprocating tube 431 moves axially, the guide ball 46 inside it rolls in the fixed spiral guide groove 47, forcing the reciprocating tube 431 to rotate while moving axially. When the reciprocating tube 431 rotates, the guide ball 434 inside it rolls along the fixed wave-shaped guide surface 44. The uneven track forces the reciprocating shaft 432 to make radial reciprocating extension and retraction movements inside the reciprocating tube 431. Through the radial extension and retraction of the reciprocating shaft 432, the striking block 433 at its end intermittently and rhythmically strikes the outer wall of the connecting pipe 2. The vibration can shake off the externally attached corrosion products and scale, and prevent the formation of new deposits. There is no need to disassemble the pipe or stop production, which greatly improves the safety and efficiency of the operation.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A corrosion-resistant gas wellhead device and Christmas tree, comprising a collection valve pipe (1) and a connecting pipe (2) with a flange installed on one side of the collection valve pipe (1), characterized in that: The connecting pipe (2) is provided with a shell (9) on the outside, and a cleaning structure one (3) and a cleaning structure two (4) are provided inside the shell (9) for use together, and a connecting component (5) is provided between the cleaning structure one (3) and the cleaning structure two (4). The cleaning structure 1 (3) includes a sleeve (31) with a hollow interior. One end of the sleeve (31) is fixedly connected to the connecting pipe (2). A pressure boosting piston (32) is slidably arranged inside the sleeve (31), and an adjusting rod (33) connected to the connecting assembly (5) is fixed on one side of the pressure boosting piston (32). The second cleaning structure (4) includes a guide tube (41) arranged from the outside to the inside and a reciprocating assembly (43). The end of the guide tube (41) is equipped with a guide tube (42). The guide tube (42) is equipped with a guide component that works with the reciprocating assembly (43). The reciprocating assembly (43) includes a reciprocating tube (431). The reciprocating tube (431) is equipped with a reciprocating shaft (432). The two ends of the reciprocating shaft (432) are respectively rotatably equipped with a striking block (433) and a guide ball (434). The outer surface of the reciprocating shaft (432) is equipped with a return spring (435). The inner side of the guide tube (41) is provided with a guide surface (44) that abuts against the guide ball (434). The reciprocating tube (431) is provided with a spiral guide groove (47) arranged around its outer surface.

2. The corrosion-resistant gas wellhead device and Christmas tree according to claim 1, characterized in that: The sleeve (31) is obliquely arranged, and a guide rod (34) and a buffer spring (35) connected to the connecting assembly (5) are provided at one end of the sleeve (31) away from the connecting pipe (2). The buffer spring (35) is surrounded around the outside of the guide rod (34), wherein one end of the guide rod (34) is fixed to the outer wall of the sleeve (31).

3. The corrosion-resistant gas wellhead device and Christmas tree according to claim 1, characterized in that: The first guide tube (41), the second guide tube (42), and the reciprocating tube (431) are all hollow. The guide surface (44) is wavy and ring-shaped. The reciprocating tube (431) is sleeved on the outside of the connecting pipe (2).

4. The corrosion-resistant gas wellhead device and Christmas tree according to claim 1, characterized in that: The striking block (433) intermittently abuts against the outer wall of the connecting pipe (2), and the first guide ball (434) rolls in cooperation with the wavy guide surface (44). The reciprocating shaft (432) passes through the inside of the reciprocating tube (431). The guide includes a guide rod (45) installed inside the second guide tube (42). The end of the guide rod (45) is rotatably equipped with the second guide ball (46), and the second guide ball (46) extends into the spiral guide groove (47) and rolls in cooperation with its inner side to realize the reciprocating rotation of the reciprocating tube (431).

5. The corrosion-resistant gas wellhead device and Christmas tree according to claim 2, characterized in that: The connecting assembly (5) includes a guide rail (51) fixedly disposed outside the connecting pipe (2). A slide block (52) is slidably installed inside the guide rail (51). A connector is provided on the slide block (52) and connected to the adjusting rod (33) and the reciprocating pipe (431) respectively. The connector includes a rack (53) slidably installed inside the slide block (52). A connecting block (54) and a connecting arm (58) are respectively installed at both ends of the rack (53). The connecting block (54) is connected to the adjusting rod (33) and the guide rod (34) respectively. The guide rod (34) passes through the interior of the connecting block (54). A connecting sleeve (59) is installed at the end of the connecting arm (58) and rotatably connected to the end of the reciprocating pipe (431).

6. The corrosion-resistant gas wellhead device and Christmas tree according to claim 5, characterized in that: The connecting assembly (5) also includes a rotating shaft (55), on the outer surface of which a gear (56) meshes with the rack (53), and a support seat (57) for limiting the rotation of the rotating shaft (55) is bolted to the outer wall of the slide (52).

7. The corrosion-resistant gas wellhead device and Christmas tree according to claim 6, characterized in that: Both the first cleaning structure (3) and the second cleaning structure (4) are equipped with a detection mechanism. The detection mechanism consists of a first detection component (6) and a second detection component (7). The first detection component (6) includes a pointer (61) fixed to the bottom side of the rotating shaft (55) and a dial (62) fixed to the bottom side of the slide (52). The pointer (61) is located above the dial (62).

8. The corrosion-resistant gas wellhead device and Christmas tree according to claim 7, characterized in that: The detection component 2 (7) includes a guide sleeve (71) fixed to the outside of the sleeve (31), a guide rod (72) slidably disposed inside the guide sleeve (71), and a mounting platform (73) fixed to one end of the guide rod (72) and rotatably connected to the end of the reciprocating tube (431). A scale rod (74) is disposed through the inside of the mounting platform (73). A roller (75) is hinged to the bottom end of the scale rod (74) and abuts against the outer surface of the connecting pipe (2). A reset spring 2 (76) is installed on the outer surface of the scale rod (74).

9. The corrosion-resistant gas wellhead device and Christmas tree according to claim 6, characterized in that: The slide (52) is equipped with an infusion assembly (8) for use with and for protection of the guide rail (51). The infusion assembly (8) includes a pumping cylinder (81) fixed to the bottom side of the slide (52), a pumping piston (82) is provided inside the pumping cylinder (81), and a plug rod (83) extending to the outside of the pumping cylinder (81) is fixed to the outer wall of the pumping piston (82).

10. The corrosion-resistant gas wellhead device and Christmas tree according to claim 9, characterized in that: The bottom end of the stopper rod (83) is equipped with an abutment block (86), and two valve pipes (84) are installed on the outer wall of the pumping cylinder (81), one of which is connected to the outer wall of the slide (52). The outer surface of the stopper rod (83) is equipped with a pressure spring (85) connected to the bottom side of the pumping cylinder (81).

Images