Shaft end mounting and sealing structure of liquid level lifting rotating shaft
By using the combined sealing structure of flange base, flange cover, elastic seal and pressure plate in the oil and water interface adjustment device, the problem of being prone to damage or leakage of the mechanical seal structure is solved, and the lower cost and more efficient sealing effects are achieved Essence
Patent Information
- Application Number
- CN202421005997.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-10
AI Technical Summary
In the existing oil-water interface adjustment devices, the mechanical seal structure is prone to damage or leakage, and the cost is high, which affects the efficiency of oil extraction.
Adopt a new sealing form, including flanges, flanges, elastic seals, and pressure plates. Through the combination of sealing rings, snail holes and double -headed bolts, the axial and radial deformation of the elastic sealing parts can be used to achieve the improvement of the rotation rotation Installation and seal of the shaft.
Avoid damage or leakage of the mechanical seal structure caused by improper operation, significantly reduced the installation and sealing cost of improving the rotating shaft, and can maintain effective sealing in the 1.5MPA usage environment.
Smart Images
Figure CN222416006U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of oil field three-phase separation devices, and relates to an oil-water interface regulating device, in particular to the installation and sealing of a lifting rotating shaft of a lifting bucket in the oil-water interface regulating device. Background Art
[0002] In the existing oil-water interface adjustment device, the lifting rotating shaft used to drive the lifting bucket is fixed on the small cylinder through a mechanical seal structure. The static ring of the mechanical seal structure is fixed on the small cylinder, and the dynamic ring is installed on the lifting rotating shaft. The corrugated hand wheel at the top of the lifting bucket is rotated, and the dynamic ring of the mechanical seal structure rotates together with the lifting rotating shaft and performs a lifting action. The lifting bucket is driven to rise and fall by the lifting rotating shaft, thereby achieving the adjustment of the oil-water interface. However, the use of mechanical seals has the following problems: (1) Improper operation by the operator can easily cause damage or leakage of the mechanical seal structure. After the mechanical seal structure is damaged or leaked, it must be shut down for maintenance, which seriously affects the efficiency of oil extraction; (2) The cost of the mechanical seal structure is high. Utility Model Content
[0003] The purpose of the utility model is to provide a sealing structure for installing a liquid level lifting rotating shaft end. This structure breaks the traditional installation method of mechanical seals and adopts a new sealing form. It can not only avoid damage or leakage of the mechanical seal structure due to improper operation of the operator, but also significantly reduce the installation and sealing cost of the lifting rotating shaft.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A sealing structure for installing the shaft end of a liquid level lifting rotating shaft, comprising a flange base, a flange cover, an elastic sealing member, and a pressure plate; wherein the flange base is installed and fixed on the top end of a small cylinder in an oil-water interface regulating device, the flange cover is arranged on the top of the flange base, a sealing ring is arranged between the flange cover and the flange base, and a sealing ring is used to achieve sealing between the flange base and the flange cover; a through hole is arranged at the axial position of the flange cover, a plurality of screw holes are arranged at intervals around the through hole along the circumference of the flange cover, an assembly groove is processed at the top end of the through hole along the circumference of the through hole, and a stud bolt is installed in the screw hole; the assembly groove is composed of a conical groove and a circular groove arranged in sequence from bottom to top; the elastic sealing member is arranged in the assembly groove The lifting rotating shaft in the oil-water interface regulating device passes through the elastic seal and the through hole to be connected with the lifting bucket in the oil-water interface regulating device; the elastic seal is composed of a cone and a circle arranged in sequence from bottom to top, the cone is arranged in a conical groove, the circle is arranged in a circular groove, and the height of the circle is higher than the height of the circular groove, so that the circle protrudes from the flange cover; the pressure plate is arranged on the elastic seal, the axial position of the pressure plate is provided with a first through hole, and the position opposite to the screw hole is provided with a second through hole, the stud bolt passes through the second through hole of the pressure plate, and the pressure plate is pressed and fixed by a nut, and the pressure plate is used to squeeze the elastic seal to perform axial and radial deformation to achieve the installation and sealing of the lifting rotating shaft.
[0006] As a preferred embodiment of the present invention, the flange base and the flange cover are fixed by bolt connection.
[0007] As a preferred embodiment of the present invention, threads at both ends of the stud bolt are identical.
[0008] As a preferred embodiment of the present invention, the elastic sealing member is made of NBR material.
[0009] The utility model has the following advantages and positive effects:
[0010] (1) The shaft end installation seal structure provided by the utility model adopts a brand-new sealing form, which can not only avoid damage or leakage of the mechanical seal structure due to improper operation of the operator, but also significantly reduce the installation and sealing cost of the lifting rotating shaft.
[0011] (2) The shaft end mounted sealing structure provided by the utility model can control the clamping force on the pressure plate by tightening the nut, thereby controlling the axial and radial deformation of the elastic seal, ensuring that the sealing structure meets the use environment of 1.5Mpa.
[0012] (3) The shaft end mounting seal structure provided by the utility model is easy to install and disassemble. In actual use, the elastic seal can be replaced regularly according to actual conditions. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0014] Figure 1 It is a structural schematic diagram of the utility model in which the shaft end mounted sealing structure for liquid level lifting is installed on a small cylinder in the oil-water interface regulating device;
[0015] Figure 2 This utility model Figure 1 A partial enlarged view of
[0016] Figure 3 It is a structural schematic diagram of the flange cover of the utility model;
[0017] Figure 4 It is a structural schematic diagram of the pressing plate of the utility model;
[0018] Figure 5 It is a structural schematic diagram of the elastic sealing member of the utility model;
[0019] Figure markings: flange base 1, flange cover 2, elastic seal 3, pressure plate 4, sealing ring 5, small cylinder 6, lifting rotating shaft 7, lifting bucket 8, stud bolt 9, nut 10, through hole 201, screw hole 202, conical groove 203, circular groove 204, cone 301, circular part 302, first through hole 401, second through hole 402. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0021] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0022] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0023] like Figures 1 to 5 As shown, the utility model provides a sealing structure for installing the shaft end of a liquid level lifting rotating shaft, comprising a flange base 1, a flange cover 2, an elastic sealing member 3, and a pressure plate 4; wherein, the flange base 1 is installed and fixed on the top end of a small cylinder 6 in an oil-water interface regulating device, and the flange cover 2 is arranged on the top of the flange base 1, and a sealing ring 5 is arranged between the flange cover 2 and the flange base 1, and the sealing ring 5 is used to achieve sealing between the flange base 1 and the flange cover 2; a through hole 201 is arranged at the axial position of the flange cover 2, and a plurality of screw holes 202 are evenly spaced around the through hole 201 along the circumference of the flange cover 2, and an assembly groove is processed at the top end of the through hole 201 along the circumference of the through hole, and a stud bolt 9 is installed in the screw hole 202; the assembly groove is composed of a conical groove 203 and a circular groove 204 arranged in sequence from bottom to top; the elastic sealing member 3 is arranged in the assembly groove, and the oil-water interface regulating device is provided with a plurality of screw holes 202 at the axial position of the flange cover 2 ... The lifting rotating shaft 7 in the interface adjustment device passes through the elastic seal 3 and the through hole 201 and is connected to the lifting barrel 8 in the oil-water interface adjustment device; the elastic seal 3 is composed of a cone 301 and a round part 302 arranged in sequence from bottom to top, the cone 301 is arranged in the conical groove 203, the round part 302 is arranged in the circular groove 204, and the height of the round part 302 is higher than the height of the circular groove 204, so that the round part 302 protrudes from the flange cover 2; the pressure plate 4 is arranged on the elastic seal 3, and a first through hole 401 is provided at the axial position of the pressure plate 4, and a second through hole 402 is provided at a position opposite to the screw hole 202, the stud bolt 9 passes through the second through hole 402 of the pressure plate, and the pressure plate 4 is pressed and fixed by the nut 10, and the pressure plate 4 is used to squeeze the elastic seal 3 for axial and radial deformation to achieve the installation and sealing of the lifting rotating shaft 7.
[0024] Specifically, in this embodiment, the diameter of the lifting rotating shaft 7 is 40mm, the diameter of the through hole 201 is 43mm, and the diameter of the first through hole 401 on the pressure plate is 42mm, that is, there is a clearance fit between the pressure plate 4 and the lifting rotating shaft 7, and between the flange cover 2 and the lifting rotating shaft 7; the inner diameter of the elastic seal 3 is 40mm, and the overall height is 7mm. The outer diameter of the end of the cone 301 of the elastic seal 3 is 42.7mm, the outer diameter of the circular portion 302 is 49mm, the height of the circular portion 302 is 2.8mm, and the angle α of the cone 301 is 37°; the height of the circular groove 204 is 1mm, and the inner diameter of the circular groove 204 is 49mm; the height of the conical groove 203 is 4mm.
[0025] Furthermore, in this embodiment, the flange base 1 and the flange cover 2 are connected and fixed by bolts (not marked).
[0026] Furthermore, in this embodiment, the threads at both ends of the stud bolt 9 are identical.
[0027] Furthermore, in this embodiment, the elastic sealing member 3 is made of NBR (nitrile rubber) material.
[0028] The above description is only a specific implementation case of the utility model, but the technical features of the utility model are not limited thereto. Any changes and modifications made by any technician in the field within the field of the utility model are within the scope of the patent of the utility model.
Claims
1. A sealing structure for installing a shaft end of a liquid level lifting rotating shaft, characterized in that: It includes a flange base, a flange cover, an elastic seal, and a pressure plate; wherein the flange base is installed and fixed on the top end of a small cylinder in the oil-water interface regulating device, the flange cover is arranged on the top of the flange base, a sealing ring is arranged between the flange cover and the flange base, and the flange base and the flange cover are sealed by the sealing ring; a through hole is arranged at the axial position of the flange cover, a plurality of screw holes are arranged around the through hole along the circumference of the flange cover at intervals, an assembly groove is processed at the top end of the through hole along the circumference of the through hole, and stud bolts are installed in the screw holes; the assembly groove is composed of a conical groove and a circular groove arranged in sequence from bottom to top; the elastic seal is arranged in the assembly groove, and the oil-water interface regulating device The lifting rotating shaft passes through the elastic seal and the through hole and is connected with the lifting bucket in the oil-water interface regulating device; the elastic seal is composed of a cone and a circle arranged in sequence from bottom to top, the cone is arranged in the conical groove, the circle is arranged in the circular groove, and the height of the circle is higher than the height of the circular groove, so that the circle protrudes from the flange cover; the pressure plate is arranged on the elastic seal, the axial position of the pressure plate is provided with a first through hole, the position opposite to the screw hole is provided with a second through hole, the stud bolt passes through the second through hole of the pressure plate, the pressure plate is pressed and fixed by the nut, and the pressure plate is used to squeeze the elastic seal to perform axial and radial deformation to achieve the installation and sealing of the lifting rotating shaft.
2. A sealing structure for installing a shaft end of a liquid level lifting rotating shaft according to claim 1, characterized in that: The flange base and the flange cover are connected and fixed by bolts.
3. A sealing structure for installing a shaft end of a liquid level lifting rotating shaft according to claim 1, characterized in that: The threads at both ends of the stud bolt are identical.
4. A sealing structure for installing a shaft end of a liquid level lifting rotating shaft according to claim 1, characterized in that: The elastic sealing element is made of NBR material.