Emergency sealing structure of rotary spraying device

Abstract

The utility model discloses an emergency sealing structure of a rotary spraying device. The technical problem that the rotary spraying device cannot be sealed in emergency is solved. The emergency sealing structure comprises a retaining ring used for being coaxially connected to a flange at the bottom of the rotary spraying device; the bearing ring groove is formed in the outer edge position of the lower surface of the retaining ring and is formed in the circumferential direction of the retaining ring; the emergency sealing ring is movably arranged in the bearing ring groove; the control part is movably connected to the bottom of the retaining ring; the emergency sealing ring is made of elastic materials, and the control part is used for controlling the emergency sealing ring to expand in the radial direction of the emergency sealing ring and enabling the outer side wall of the emergency sealing ring to be tightly connected with the inner side wall of the rotary spraying device shell in an abutting mode so that emergency sealing of the rotary spraying device can be achieved. According to the emergency sealing structure, rapid emergency sealing of the rotary spraying device can be achieved, a sealing piece of the rotary spraying device does not need to be replaced, operation is easy and convenient, downtime and operation risks are remarkably reduced, operation efficiency is improved, the emergency sealing structure can be repeatedly used, and therefore cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of well control equipment technology, specifically relating to an emergency sealing structure for a rotary nozzle. Background Technology

[0002] The rotary nozzle is the core equipment of the well control system of an offshore drilling platform. Its streamline sealing performance is directly related to the safety of drilling operations. Under high pressure and high temperature environments, the streamline sealing components of the rotary nozzle are prone to aging and corrosion failure, resulting in leakage problems.

[0003] Currently, if the seal of the nozzle converter fails, workers need to remove the distributor and replace the seal, which is a complex and time-consuming operation, and the disassembly process can easily lead to well control accidents. Furthermore, in related technologies, the nozzle converter seals need to be readjusted after replacement, thus affecting operational efficiency and requiring improvement. Utility Model Content

[0004] In order to solve all or some of the above problems, the purpose of this utility model is to provide an emergency sealing structure for a rotary nozzle, which can achieve rapid emergency sealing of the rotary nozzle, is easy to operate, significantly reduces downtime and operational risks, improves operational efficiency, and the emergency sealing structure can be reused, thereby reducing costs.

[0005] This utility model provides an emergency sealing structure for a rotary nozzle, comprising:

[0006] A retaining ring is used for coaxial connection to the flange at the bottom of the rotary nozzle;

[0007] A receiving groove is provided at the outer edge of the lower surface of the retaining ring and is provided along the circumference of the retaining ring;

[0008] An emergency sealing ring is movably disposed within the receiving ring groove;

[0009] The control unit is movably connected to the bottom of the retaining ring;

[0010] The emergency sealing ring is made of an elastic material, and the control unit is used to control the emergency sealing ring to expand radially and make the outer side wall of the emergency sealing ring tightly abut against the inner side wall of the nozzle housing to achieve emergency sealing of the nozzle.

[0011] Optionally, the control unit includes:

[0012] A support ring is movably connected to the bottom of the retaining ring;

[0013] A control ring is coaxially fixed to the outer edge of the upper surface of the control ring and slides vertically with the receiving ring groove.

[0014] A guide portion is disposed between the control ring and the emergency sealing ring. When the control ring moves upward and transmits force to the guide portion, the emergency sealing ring can expand radially under the action of the guide portion.

[0015] Optionally, the guide portion includes:

[0016] A guide ring is coaxially fixed to the inner edge of the upper surface of the control ring;

[0017] A first guide ramp is disposed on the outer side wall of the guide ring;

[0018] Multiple guide strips are arranged at equal intervals along the circumference of the retaining ring. Each guide strip is arc-shaped and tightly abuts against the inner wall of the emergency sealing ring.

[0019] There are multiple second guide slopes, each disposed on a corresponding guide bar, and each of the multiple second guide slopes is in close contact with the first guide slope.

[0020] Optionally, the inner wall of the emergency sealing ring is provided with multiple limiting step grooves, and the multiple guide strips are respectively tightly embedded in the corresponding limiting step grooves.

[0021] Optionally, the inner wall of the emergency sealing ring is provided with a limiting slope, which is flush with the second guide slope and closely abuts against the first guide slope.

[0022] Optionally, the inclination angles of the first guide slope, the second guide slope, and the limiting slope are 15°-30° respectively.

[0023] Optionally, the inner sidewall of the control ring is fixedly connected with multiple positioning plates at equal intervals along its circumference, and the lower surface of the retaining ring is provided with multiple positioning grooves. The multiple positioning plates are vertically slidably engaged with the corresponding positioning grooves, and the multiple positioning plates are movably connected to the retaining ring by fastening screws.

[0024] Optionally, the fastening screw may have a hexagonal head or hydraulic interface on its nut for use with an external manual wrench or hydraulic wrench.

[0025] Optionally, the outer wall of the emergency sealing ring is vulcanized to form multiple annular sealing flanges, and the multiple sealing flanges can form a multi-stage seal with the inner wall of the rotary nozzle housing.

[0026] Optionally, the outer diameter of the expanded emergency sealing ring is 0.5%-1.5% larger than the inner diameter of the nozzle housing.

[0027] As can be seen from the above technical solution, the emergency sealing structure of the rotary nozzle provided by this utility model has the following advantages:

[0028] This emergency sealing structure enables rapid emergency sealing of the spray nozzle without the need to replace the nozzle's seals. It is easy to operate, significantly reduces downtime and operational risks, improves operational efficiency, and is reusable, thereby reducing costs.

[0029] Other features and advantages of this invention will be set forth in the following description. Attached Figure Description

[0030] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain the technical solution of this utility model, and do not constitute a limitation on the technical solution of this utility model.

[0031] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0032] Figure 2 This is a schematic diagram illustrating the usage state of an embodiment of the present utility model;

[0033] Figure 3 for Figure 2 Enlarged view of region A in the middle;

[0034] Figure 4 This is a schematic diagram of the emergency sealing ring in an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the support ring structure in an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the guide strip in an embodiment of the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Retaining ring; 2. Receiving ring groove; 3. Emergency sealing ring; 4. Control unit; 41. Support ring; 42. Control ring; 43. Guide unit; 431. Guide ring; 432. First guide slope; 433. Guide strip; 434. Second guide slope; 435. Limiting slope; 5. Limiting step groove; 6. Positioning plate; 7. Positioning groove; 8. Fastening screw. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be arbitrarily combined with each other.

[0040] like Figures 1-6 The present invention is illustrated in an embodiment of the present invention. This embodiment discloses an emergency sealing structure for a rotary nozzle, including a retaining ring 1. The retaining ring 1 can be coaxially connected to the flange at the bottom of the rotary nozzle by multiple limiting screws. A receiving ring groove 2 is provided at the outer edge of the lower surface of the retaining ring 1, and the receiving ring groove 2 is arranged along the circumference of the retaining ring 1.

[0041] In one embodiment, such as Figure 1 , Figure 2 , Figure 3 As shown, an emergency sealing ring 3 is movably disposed in the receiving ring groove 2, and the emergency sealing ring 3 is made of elastic material. Meanwhile, a control unit 4 is movably connected to the bottom of the retaining ring 1. The control unit 4 is used to control the emergency sealing ring 3 to expand radially and to make the outer side wall of the emergency sealing ring 3 tightly abut against the inner side wall of the rotary nozzle housing, so as to achieve emergency sealing of the rotary nozzle.

[0042] The emergency sealing structure of the rotary nozzle in this embodiment can achieve rapid emergency sealing of the rotary nozzle without replacing the nozzle's seals. It is easy to operate, significantly reduces downtime and operational risks, improves operational efficiency, and the emergency sealing structure can be reused, thereby reducing costs.

[0043] In one embodiment, such as Figure 3 , Figure 4 As shown, the emergency sealing ring 3 is made of a high-temperature and corrosion-resistant elastic material (such as fluororubber, silicone rubber, or neoprene rubber) to ensure its performance. The outer wall of the emergency sealing ring 3 is vulcanized to form multiple annular sealing flanges (not shown in the figure), and these flanges can form a multi-stage seal with the inner wall of the nozzle housing to ensure a good sealing effect. Simultaneously, the outer diameter of the expanded emergency sealing ring 3 is 0.5%-1.5% larger than the inner diameter of the nozzle housing to ensure an interference fit, thereby improving the sealing effect.

[0044] In one embodiment, such as Figure 3 , Figure 5 As shown, the control unit 4 includes a support ring 41, a control ring 42, and a guide part 43. The support ring 41 is movably connected to the bottom of the retaining ring 1. The control ring 42 is coaxially fixed to the outer edge of the upper surface of the control ring 42, and the control ring 42 forms a vertical sliding fit with the receiving ring groove 2. The guide part 43 is disposed between the control ring 42 and the emergency sealing ring 3. When the control ring 42 moves upward and transmits force to the guide part 43, the emergency sealing ring 3 can expand radially under the action of the guide part 43.

[0045] In one embodiment, such as Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the guide portion 43 includes a guide ring 431 coaxially fixedly connected to the inner edge of the upper surface of the control ring 42, and the outer wall of the guide ring 431 is provided with a first guide slope 432. The guide portion 43 also includes a plurality of arc-shaped guide strips 433, which are arranged at equal intervals along the circumference of the retaining ring 1, and the plurality of guide strips 433 respectively abut against the inner sidewall of the emergency sealing ring 3. At the same time, each guide strip 433 is provided with a second guide slope 434, and the plurality of second guide slopes 434 respectively fit and abut against the first guide slope 432.

[0046] When the support ring 41 drives the control ring 42 to move vertically upward, the force along the axial direction of the emergency sealing ring 3 is converted into a radial force under the action of the first guide slope 432 and the second guide slope 434. This causes the emergency sealing ring 3 to expand radially under the action of multiple guide bars 433 and to press tightly against the inner wall of the spray nozzle housing.

[0047] In one embodiment, such as Figure 3 , Figure 4 As shown, the inner wall of the emergency sealing ring 3 is provided with multiple limiting step grooves 5, and multiple guide strips 433 are respectively tightly embedded in the corresponding limiting step grooves 5 to improve the connection stability between the emergency sealing ring 3 and the guide strips 433, thereby ensuring the stable transmission of force.

[0048] In one embodiment, such as Figure 3 , Figure 5 , Figure 6 As shown, the inner wall of the emergency sealing ring 3 is provided with a limiting inclined surface 435. The limiting inclined surface 435 is flush with the second guide inclined surface 434 and closely abuts against the first guide inclined surface 432, further improving the guiding effect, thereby ensuring that the emergency sealing ring 3 can expand smoothly and achieve stable sealing.

[0049] In this embodiment, the inclination angles of the first guide slope 432, the second guide slope 434, and the limiting slope 435 are 15°-30° respectively, to ensure stable force transmission.

[0050] In one embodiment, such as Figure 3 , Figure 5 As shown, multiple positioning plates 6 are fixedly connected at equal intervals along the inner sidewall of the control ring 42, and multiple positioning grooves 7 are provided on the lower surface of the retaining ring 1. The multiple positioning plates 6 are vertically slidably engaged with the corresponding positioning grooves 7, and the multiple positioning plates 6 are movably connected to the retaining ring 1 by fastening screws 8.

[0051] In this embodiment, the nut of the fastening screw 8 is provided with a hexagonal head or hydraulic interface (not shown in the figure) for use with an external manual wrench or hydraulic wrench, so that the operator can control the fastening screw 8 to adjust quickly.

[0052] The emergency sealing structure of the rotary nozzle in this embodiment is used as follows:

[0053] The emergency sealing structure is installed at the bottom flange of the nozzle. When the streamline seal of the nozzle fails, a manual or hydraulic wrench is used to control the rotation of the fastening screw 8, causing the support ring 41 and control ring 42 to move upward. At this time, under the action of the guide part 43, the axial thrust is converted into radial expansion force, causing the emergency sealing ring 3 to expand radially, so that the emergency sealing ring 3 and the inner wall of the nozzle housing are tightly fitted together, thereby achieving an emergency seal for the nozzle. Subsequently, the sealing effect is confirmed by pressure testing equipment. If the standard is met, operation is resumed. After the nozzle malfunction is resolved, a manual or hydraulic wrench is used to control the reverse rotation of the fastening screw 8, releasing the expansion force of the emergency sealing ring 3, so that all components return to their initial state.

[0054] As can be seen from the above process, this emergency sealing structure can achieve rapid emergency sealing of the rotary nozzle. It is easy to operate, requiring no disassembly of the rotary nozzle body or replacement of seals, and can complete the sealing operation in a short time, significantly reducing downtime and operational risks, and improving operational efficiency. Furthermore, this emergency sealing structure is reusable, thereby reducing costs and achieving efficient resource utilization.

[0055] It should be noted that, unless otherwise stated, the technical or scientific terms used in this utility model shall have the ordinary meaning as understood by those skilled in the art to which this utility model pertains.

[0056] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An emergency seal structure for a rotary atomizer, characterized by, include: A retaining ring (1) is used for coaxial connection to the flange at the bottom of the rotary nozzle; The receiving groove (2) is located at the outer edge of the lower surface of the retaining ring (1) and is arranged along the circumference of the retaining ring (1); An emergency sealing ring (3) is movably disposed within the receiving ring groove (2); The control unit (4) is movably connected to the bottom of the retaining ring (1); The emergency sealing ring (3) is made of elastic material, and the control unit (4) is used to control the emergency sealing ring (3) to expand radially and make the outer side wall of the emergency sealing ring (3) tightly abut against the inner side wall of the nozzle housing to achieve emergency sealing of the nozzle.

2. The emergency containment structure of claim 1, wherein, The control unit (4) includes: A support ring (41) is movably connected to the bottom of the retaining ring (1); The control ring (42) is coaxially fixed to the outer edge of the upper surface of the control ring (42) and vertically slides with the receiving ring groove (2); The guide part (43) is disposed between the control ring (42) and the emergency sealing ring (3). When the control ring (42) moves upward and transmits force to the guide part (43), the emergency sealing ring (3) can expand radially under the action of the guide part (43).

3. The emergency containment structure of claim 2, wherein, The guide portion (43) includes: The guide ring (431) is coaxially fixed to the inner edge of the upper surface of the control ring (42); A first guide slope (432) is provided on the outer side wall of the guide ring (431); There are multiple guide strips (433) and they are arranged at equal intervals along the circumference of the retaining ring (1). Each of the multiple guide strips (433) is arc-shaped and each of the multiple guide strips (433) is in close contact with the inner wall of the emergency sealing ring (3). There are multiple second guide slopes (434), which are respectively disposed on the corresponding guide strips (433), and the multiple second guide slopes (434) are respectively in close contact with the first guide slope (432).

4. The emergency containment structure of claim 3, wherein, The inner wall of the emergency sealing ring (3) is provided with multiple limiting step grooves (5), and multiple guide strips (433) are respectively tightly embedded in the corresponding limiting step grooves (5).

5. The emergency containment structure of claim 3, wherein, The inner wall of the emergency sealing ring (3) is provided with a limiting inclined surface (435), which is flush with the second guide inclined surface (434) and closely abuts against the first guide inclined surface (432).

6. The emergency containment structure of claim 5, wherein, The inclination angles of the first guide slope (432), the second guide slope (434), and the limiting slope (435) are 15°-30° respectively.

7. The emergency containment structure of claim 2, wherein, The inner sidewall of the control ring (42) is fixedly connected with multiple positioning plates (6) at equal intervals along its circumference. The lower surface of the retaining ring (1) is provided with multiple positioning grooves (7). The multiple positioning plates (6) are vertically slidably engaged with the corresponding positioning grooves (7), and the multiple positioning plates (6) are movably connected to the retaining ring (1) by fastening screws (8).

8. The emergency containment structure of claim 7, wherein, The fastening screw (8) has a hexagonal head or hydraulic interface on its nut for use with an external manual wrench or hydraulic wrench.

9. The emergency containment structure of claim 1, wherein, The outer wall of the emergency sealing ring (3) is vulcanized to form multiple annular sealing flanges, and the multiple sealing flanges can form a multi-level seal with the inner wall of the rotary nozzle housing.

10. The emergency containment structure of claim 1, wherein, The outer diameter of the expanded emergency sealing ring (3) is 0.5%-1.5% larger than the inner diameter of the nozzle housing.

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