A tail shaft sealing system for deep-sea operation equipment

Abstract

This invention discloses a tail shaft sealing system for deep-sea operating equipment. Its features include a sealing seat, an intelligent sensing plug seal, a spacer ring, and a pressure cap. The intelligent sensing plug seal is disposed in the sealing groove of the sealing seat and is abutted against its end face by the spacer ring. The pressure cap is connected to the sealing seat by screws. The intelligent sensing plug seal has the function of transmitting data in real time. This patented sealing system, due to the addition of the intelligent sensing plug seal, can perform self-checks on its sealing condition and transmit its sealing condition information in real time. This lays the foundation for timely and accurate quantitative evaluation of the sealing performance and reliability of the seal, thereby enabling early detection and resolution of problems.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of deep sea operation equipment tail shaft sealing system technical field, especially to a kind of tail shaft sealing system on deep sea operation submersible. BACKGROUND

[0002] Sealing technology is the key technology that affects the safety of equipment in engineering application field, with the development of science and technology, some equipment must adapt to space, deep sea, polar and other extreme environments, and traditional rubber sealing material has certain limitations in essential attribute, it is easy to age at high temperature, easy to brittle crack at low temperature, and cannot meet the increasingly complex engineering needs.Therefore, independent research and development of high-performance sealing under special working conditions has been one of the important research topics in the field of sealing and leakage prevention.

[0003] In the existing sealing system, metal sealing ring has been used, which has the characteristics of wide working temperature range, corrosion resistance, high strength, etc., and can adapt to harsh engineering environment, and is increasingly used in the sealing field.Because it can realize compression, rebound and damping energy consumption under external load, etc., it can realize the function of sealing by adding C-shaped, rectangular, O-shaped metal shell or rubber wrapping layer in special engineering application environment.The reason for the failure of the metal sealing ring sealing system is analyzed by experiment and finite element simulation, and the reliability function of the sealing element is calculated based on the experimental and simulation data, and the working life of the metal rubber sealing element is predicted through the function.

[0004] At present, the sealing system cannot directly observe the lubrication condition of the sealing interface and the microstate in the sealing gap when working, so the evaluation basis for replacing the sealing element is insufficient, and the sealing performance and reliability of the sealing element cannot be quantitatively evaluated in time.

[0005] The replacement evaluation condition of most sealing elements in the current sealing system is whether the service time of the sealing element reaches the preset life value, and the sealing element can only be detected and replaced by stopping work and disassembling the equipment, which seriously increases the time and cost. SUMMARY

[0006] The purpose of the present application is to provide a deep sea operation equipment tail shaft sealing system, which can timely transmit the working condition information of the metal sealing ring, and lay a foundation for timely quantitative evaluation of the sealing performance and reliability of the sealing element.

[0007] To solve the above technical problems, the technical scheme adopted by the present application is:

[0008] The application discloses a tail shaft sealing system of a deep-sea operation device, which comprises a sealing seat, an intelligent sensing type flooding seal, a spacer ring and a gland.

[0009] Further, the intelligent sensing type flooding seal is provided with two.

[0010] Further, a heat conducting packing is arranged between the gland and the spacer ring.

[0011] Further, the intelligent sensing type flooding seal comprises a C-shaped metal ring body and an energy storage spring, the C-shaped metal ring body is a metal ring with a C-shaped groove, the C-shaped metal ring body comprises a skeleton metal layer and a soft metal layer, the soft metal layer is wrapped on the surface of the skeleton metal layer, the surface in the C-shaped groove of the C-shaped metal ring body is provided with an electrically insulating layer, the surface of the electrically insulating layer is provided with a corresponding positive electrode conductive film and a negative electrode conductive film, the positive electrode conductive film and the negative electrode conductive film constitute a flexible capacitive sensor, the energy storage spring is arranged in the C-shaped groove of the C-shaped metal ring body to compensate for the deformation of the C-shaped metal ring body, and the surface of the energy storage spring is provided with a non-conductive layer.

[0012] Further, one end of the positive electrode conductive film and the negative electrode conductive film is respectively coated with an adhesive layer, and the adhesive layer is used to bond a data line electrically connected with the positive electrode conductive film and the negative electrode conductive film.

[0013] Further, the energy storage spring is a cylindrical spiral spring.

[0014] Further, the material of the skeleton metal layer is copper, low-carbon steel, stainless steel, tantalum, zirconium or titanium.

[0015] Further, the material of the soft metal layer is silver, aluminum, nickel, gold or indium.

[0016] Further, the electrically insulating layer and the non-conductive layer are both made of a polyimide polymer material.

[0017] Further, the material of the positive electrode conductive film and the negative electrode conductive film is copper.

[0018] The application has the following beneficial effects:

[0019] The sealing system of the application is provided with the intelligent sensing type flooding seal, the intelligent sensing type flooding seal can self-check the sealing working condition thereof, timely transmit the sealing working condition information of the intelligent sensing type flooding seal, lay a foundation for timely and accurately evaluating the sealing property and reliability of the sealing member, and thus problems can be found and solved early. BRIEF DESCRIPTION OF DRAWINGS

[0020] The application will be further described with the accompanying drawings, but the embodiments in the drawings do not constitute any limitation to the application, and other embodiments can be obtained by those skilled in the art without creative labor on the basis of the following drawings:

[0021] Figure 1 The structural schematic diagram of the application is shown in the figure;

[0022] Figure 2 The structural schematic diagram of the intelligent sensing type universal seal is shown in the figure; Figure 1

[0023] Figure 3 The sectional view along the line A-A is shown in the figure. Figure 2

[0024] In the figure: 1, C-shaped metal ring body; 2, energy storage spring; 3, C-shaped groove; 4, skeleton metal layer; 5, soft metal layer; 6, electrically insulating layer; 7, positive electrode conductive film; 8, negative electrode conductive film; 9, adhesive layer; 10, data line; 11, sealing seat; 12, intelligent sensing type universal seal; 13, spacer ring; 14, gland; 15, heat conducting packing; 16, screw; 17, shaft. DETAILED DESCRIPTION

[0025] In order for those skilled in the art to better understand the technical solutions of the application, the application will be further described in detail below in combination with the drawings and specific embodiments, and it should be noted that the embodiments of the application and the features in the embodiments can be combined with each other without conflict.

[0026] In the description of the application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper surface", "lower surface", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "forward rotation", "reverse rotation", "axial", "radial", "circumferential" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0027] As Figure 1 ​​As shown in the figure, a deep-sea operation equipment tail shaft sealing system comprises a sealing seat 11, an intelligent sensing type flooding seal 12, a spacer ring 13 and a gland 14, the intelligent sensing type flooding seal 12 is arranged in a sealing groove of the sealing seat 11 and abuts against an end face of the intelligent sensing type flooding seal 12 by the spacer ring 13, and the gland 14 is connected with the sealing seat 11 by a screw 16; the intelligent sensing type flooding seal 12 has the function of timely transmitting data, and two intelligent sensing type flooding seals 12 are arranged. A heat conducting packing 15 is arranged between the gland 14 and the spacer ring 13. The embodiment is a sealing system of a shaft 17.

[0028] As shown in the figure, Figure 2 , 3 The intelligent sensing type flooding seal 12 comprises a C-shaped metal ring body 1 and an energy storage spring 2, and the energy storage spring 2 is a cylindrical spiral spring; the C-shaped metal ring body 1 is a metal ring with a C-shaped groove 3 in the cross section, the C-shaped metal ring body 1 comprises a skeleton metal layer 4 and a soft metal layer 5, the soft metal layer 5 is wrapped on the surface of the skeleton metal layer 4, the material of the skeleton metal layer 4 is stainless steel 718, and the material of the soft metal layer 5 is silver. The surface in the C-shaped groove 3 of the C-shaped metal ring body 1 is provided with an electrically insulating layer 6, and the electrically insulating layer 6 is made of a polyimide polymer material and has a thickness of 12-50 μm.

[0029] The surface of the electrically insulating layer 6 is provided with a corresponding positive electrode conductive film 7 and a negative electrode conductive film 8, and the positive electrode conductive film 7 and the negative electrode conductive film 8 are made of copper material and have a thickness of 12-35 μm.

[0030] One end of the positive electrode conductive film 7 and the negative electrode conductive film 8 is respectively coated with an adhesive layer 9, the adhesive layer 9 is used to bond a data line 10 electrically connected with the positive electrode conductive film and the negative electrode conductive film, the positive electrode conductive film 7 and the negative electrode conductive film 8 constitute a flexible capacitive sensor, the energy storage spring 2 is arranged in the C-shaped groove of the C-shaped metal ring body 1 to compensate for the deformation of the C-shaped metal ring body, and the surface of the energy storage spring 2 is provided with a non-conductive layer.

[0031] Working principle: in large equipment in harsh environment conditions such as deep space, deep sea and deep earth, the sealing element in the sealing system of the equipment cannot be easily disassembled and replaced due to the reasons that the construction personnel cannot enter, the construction space is limited, the maintenance cost is high and the like. Under normal circumstances, the failure mode of the sealing system caused by friction and wear is the transient information.

[0032] In the sealing system, the positive electrode conductive film 7 and the negative electrode conductive film 8 in the intelligent sensing type flooding seal 12 constitute a flexible capacitive sensor,

[0033] The capacitance is represented by formula (1) as C = ε0ε r A / d (1)

[0034] wherein: ε0, ε r are the relative permittivity of the dielectric layer and vacuum, respectively; A is the overlapping area of the upper and lower plates, in units of m 2 ; d is the vertical distance between the two plates, in units of m.

[0035] Compared with the ordinary parallel-plate capacitor, the capacitance change of the C-type sealing ring sensor is mainly achieved by dynamically changing the parameters of the dielectric layer, including changing the parameters of d and A together. In combination of the above effects, the vertical distance d between the plates and the overlapping area A of the upper and lower plates of the dielectric layer with C-type ring structure are prone to change under the action of a small pressure.

[0036] When the C-shaped groove of the metal sealing ring is deformed, the plate spacing d and the overlapping area A of the upper and lower plates will change, and this change information will be transmitted outward. The monitoring host uses these information to provide the possibility for early fault diagnosis of complex equipment, so that problems can be found and solved early, and the situation of sealing failure during service can be effectively avoided.

[0037] In addition, without being mutually contradictory, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples. Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and modifications to the above embodiments within the scope of the present application.

Claims

1. A stern shaft seal system for a deep sea operating device, characterized by: The application relates to a sealing seat, an intelligent sensing type universal seal, a ring and a gland, the intelligent sensing type universal seal is arranged in a sealing groove of the sealing seat and is abutted against the end face of the intelligent sensing type universal seal by the ring, and the gland is connected with the sealing seat by a screw; the intelligent sensing type universal seal has the function of timely data transmission; the intelligent sensing type universal seal comprises a C-shaped metal ring body and an energy storage spring, the C-shaped metal ring body is a metal ring with a C-shaped groove, the C-shaped metal ring body comprises a skeleton metal layer and a soft metal layer, the soft metal layer is wrapped on the surface of the skeleton metal layer, the surface in the C-shaped groove of the C-shaped metal ring body is provided with an electrically insulating layer, the surface of the electrically insulating layer is provided with corresponding positive and negative conductive films, and the positive and negative conductive films constitute a flexible capacitive sensor; the energy storage spring is arranged in the C-shaped groove of the C-shaped metal ring body and is used for compensating the deformation of the C-shaped metal ring body; and the surface of the energy storage spring is provided with a non-conductive layer.

2. A deep water work equipment shaft seal system according to claim 1, characterised in that: The intelligent sensing type universal seal is provided with two.

3. The deep water work vessel shaft seal system of claim 1, wherein: A heat conducting packing is arranged between the gland and the ring.

4. A deep water work device shaft seal system according to claim 3, characterised in that: One end of the positive and negative conductive films is respectively coated with an adhesive layer, and the adhesive layer is used for bonding a data line electrically connected with the positive and negative conductive films.

5. The deep water work vessel shaft seal system of claim 3, wherein: The energy storage spring is a cylindrical spiral spring.

6. The deep water work device shaft seal system of claim 3, wherein: The material of the skeleton metal layer is copper, low-carbon steel, stainless steel, tantalum, zirconium or titanium.

7. The deep water work vessel shaft seal system of claim 3, wherein: The material of the soft metal layer is silver, aluminum, nickel, gold or indium.

8. The deep water work device shaft seal system of claim 3, wherein: The electrically insulating layer and the non-conductive layer are both made of a polyimide polymer material.

9. The deep water work device shaft seal system of claim 3, wherein: The material of the positive and negative conductive films is copper.

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