A small impact-resistant accelerometer special for petroleum inclinometer

Abstract

The utility model relates to a small -size anti -impact accelerometer special use of petroleum inclinometer. The structure includes: quartz accelerometer main part, support rod, mounting hole, frosted layer, first adhesive layer and second adhesive layer, the top symmetry is equipped with the support rod, the quartz accelerometer main part surface symmetry has the mounting hole, the quartz accelerometer main part bottom is the hexagonal cylinder of equilateral, the quartz accelerometer main part inner wall is fixedly connected with frosted layer, frosted layer inner wall is fixedly connected with first adhesive layer, first adhesive layer inside is equipped with second adhesive layer, through installing frosted layer, first adhesive layer and second adhesive layer, through frosted layer first adhesive layer and quartz accelerometer main part inner wall connection firm, first adhesive layer and second adhesive layer due to the thickness is different, and the gradient adhesive layer structure is formed, imitates the buffer material structure, improves the absorption efficiency of impact energy, simultaneously, can fill the clearance of quartz accelerometer main part inner wall and component, strengthens the structure rigidity and anti -vibration ability.

Description

Technical Field

[0001] This utility model relates to the field of quartz flexible accelerometer technology, and in particular to a small impact-resistant accelerometer specifically for oil inclinometers. Background Technology

[0002] The quartz flexible accelerometer is a high-precision inertial sensor designed based on the excellent properties of quartz crystals. Its core component is a quartz pendulum, which achieves minute angular deflection through a flexible support structure to sensitively input acceleration. Its working principle is based on Newton's second law. By detecting the capacitance change or optical path change caused by the deflection of the pendulum, the acceleration value is calculated. This accelerometer has the advantages of small size, light weight, high accuracy (down to the microgram level), good stability, and strong radiation resistance. It is widely used in fields such as oil inclinometer, aerospace, missile guidance, and earthquake monitoring, and is a key component of inertial navigation and attitude control systems.

[0003] Small, shock-resistant accelerometers used in oil well logging often employ quartz flexible accelerometers. Their high precision and stability make them key components for measuring tilt angles and vibration parameters in oil well logging operations. However, the inner walls of these accelerometer housings typically lack specialized shock-resistant designs. Under the complex and harsh conditions of oil well logging, the instruments frequently encounter collisions and vibrations. Impact energy can easily penetrate the housing and be directly transmitted to the interior. Because the core components, such as the internal quartz pendulum, are fragile and have delicate structures, they are extremely sensitive to impacts. Even small amounts of energy can cause pendulum misalignment, flexible support deformation, or even serious malfunctions such as misalignment of the capacitor detection plates and breakage of optical elements. This not only causes distorted measurement data and a sharp drop in accuracy but may also force the instrument to be shut down due to permanent component damage, significantly increasing maintenance costs and logging cycles. Therefore, it is urgent to improve the shock resistance of accelerometers by optimizing the housing structure, adding buffer layers, or implementing energy dissipation mechanisms to ensure reliable operation in extreme environments.

[0004] Therefore, in response to the above problems, a new small-sized impact-resistant accelerometer specifically designed for oil inclinometers is proposed. Utility Model Content

[0005] To overcome the problems existing in related technologies, this utility model provides a small impact-resistant accelerometer for petroleum inclinometers. It can install a gradient adhesive layer on the inner wall of the quartz flexible accelerometer housing to improve impact resistance, and at the same time fill the gap between the inner wall of the housing and the components to prevent the components from loosening.

[0006] To achieve the above objectives, the first aspect of this utility model provides a small, shock-resistant accelerometer specifically for oilfield inclinometers, comprising: Quartz accelerometer body, support rod, mounting hole, frosted layer, first adhesive layer and second adhesive layer; The main body of the quartz accelerometer is symmetrically equipped with support rods at the top. The main body of the quartz accelerometer is symmetrically equipped with mounting holes on its surface. The bottom of the main body of the quartz accelerometer is an equilateral hexagonal prism. A frosted layer is fixedly connected to the inner wall of the main body of the quartz accelerometer. A first adhesive layer is fixedly connected to the inner wall of the frosted layer. A second adhesive layer is installed inside the first adhesive layer.

[0007] Furthermore, the thickness of the first adhesive layer is greater than the thickness of the second adhesive layer.

[0008] Furthermore, symmetrical limit blocks are formed on the inner wall of the first adhesive layer, and symmetrical limit grooves are fixedly connected to the surface of the second adhesive layer, with the limit grooves and limit blocks being slidably connected.

[0009] Furthermore, both the limiting block and the limiting groove adopt a rectangular design, with the length of the limiting block being greater than the length of the limiting groove.

[0010] Furthermore, a first reinforcing plate is fixedly connected to the surface of the support rod and to the upper surface of the quartz accelerometer body, and a second reinforcing plate is fixedly connected to the support rod on the upper surface of the first reinforcing plate.

[0011] Furthermore, a positioning block is provided on the lower surface of the second reinforcing sheet, and a positioning hole is fixedly connected to the upper surface of the first reinforcing sheet, with the positioning hole and the positioning block slidingly connected.

[0012] Furthermore, both the positioning block and the positioning hole are designed as annular rings, with the inner and outer diameters of the positioning block being larger than those of the positioning hole.

[0013] The technical solution provided by this utility model can include the following beneficial effects: In this example, by installing a frosted layer, a first adhesive layer, and a second adhesive layer, the first adhesive layer and the inner wall of the quartz accelerometer body are firmly connected by the frosted layer. The first and second adhesive layers, due to their different thicknesses, form a gradient adhesive layer structure, which mimics the structure of a buffer material and improves the absorption efficiency of impact energy. At the same time, it can fill the gap between the inner wall of the quartz accelerometer body and the components, enhancing the structural rigidity and vibration resistance.

[0014] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the present invention. Attached Figure Description

[0015] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0016] Figure 1 This is a schematic diagram of the overall structure from one angle shown in one embodiment of this utility model; Figure 2This is a schematic diagram of the overall structure from another angle, as shown in an embodiment of the present invention; Figure 3 This is a cross-sectional schematic diagram of the main body of the quartz accelerometer shown in an embodiment of the present invention; Figure 4 This is a schematic cross-sectional view of the first adhesive layer shown in an embodiment of the present invention; Figure 5 This is a schematic diagram of the support rod structure shown in an embodiment of the present invention; Figure 6 This is a schematic cross-sectional view of the second reinforcing sheet shown in an embodiment of the present invention.

[0017] The correspondence between the labels and component names in the attached figures is as follows: 1. Quartz accelerometer body; 2. Support rod; 3. Mounting hole; 4. Frosted layer; 5. First adhesive layer; 6. Second adhesive layer; 7. Limiting block; 8. Limiting groove; 9. First reinforcing plate; 10. Second reinforcing plate; 11. Positioning block; 12. Positioning hole. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. The preferred embodiments of this utility model will now be described in more detail with reference to the accompanying drawings. Although the preferred embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this utility model more thorough and complete, and to fully convey the scope of this utility model to those skilled in the art.

[0019] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0020] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] How to design a small, impact-resistant accelerometer specifically for oil inclinometers is currently the primary technical problem that technicians need to solve.

[0022] To address the aforementioned problems, this utility model provides a small, impact-resistant accelerometer specifically designed for oilfield inclinometers. This structure allows for the installation of a gradient adhesive layer on the inner wall of the quartz flexible accelerometer housing, improving its impact resistance. Simultaneously, it fills the gap between the inner wall of the housing and the components, preventing the components from loosening.

[0023] The technical solution of the present invention (Embodiment 1) is described in detail below with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the overall structure from one angle shown in one embodiment of this utility model; Figure 2 This is a schematic diagram of the overall structure from another angle, as shown in an embodiment of the present invention; Figure 3 This is a cross-sectional schematic diagram of the main body of the quartz accelerometer shown in an embodiment of the present invention; Figure 4 This is a schematic cross-sectional view of the first adhesive layer shown in an embodiment of the present invention; Figure 5 This is a schematic diagram of the support rod structure shown in an embodiment of the present invention; Figure 6 This is a schematic cross-sectional view of the second reinforcing sheet shown in an embodiment of the present invention.

[0025] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 This small, shock-resistant accelerometer specifically designed for oilfield inclinometers includes: Quartz accelerometer body 1, support rod 2, mounting hole 3, frosted layer 4, first adhesive layer 5, and second adhesive layer 6; The top of the quartz accelerometer body 1 is symmetrically equipped with ten support rods 2. The surface of the quartz accelerometer body 1 is symmetrically provided with four mounting holes 3. The bottom of the quartz accelerometer body 1 is an equilateral hexagonal prism with chamfered corners. A frosted layer 4 is fixedly connected to the inner wall of the quartz accelerometer body 1. A first adhesive layer 5 is fixedly connected to the inner wall of the frosted layer 4. A second adhesive layer 6 is installed inside the first adhesive layer 5.

[0026] Specifically, the thickness of the first adhesive layer 5 is greater than the thickness of the second adhesive layer 6, and both the first adhesive layer 5 and the second adhesive layer 6 are made of phenolic epoxy resin.

[0027] Specifically, six limiting blocks 7 are symmetrically provided on the inner wall of the first adhesive layer 5, and six limiting grooves 8 are symmetrically fixedly connected to the surface of the second adhesive layer 6. The limiting grooves 8 are slidably connected to the limiting blocks 7.

[0028] Specifically, both the limiting block 7 and the limiting groove 8 adopt a rectangular design, and the length of the limiting block 7 is greater than the length of the limiting groove 8.

[0029] Specifically, a first reinforcing plate 9 is fixedly connected to the surface of the support rod 2 and is fixedly connected to the upper surface of the quartz accelerometer body 1. A second reinforcing plate 10 is fixedly connected to the support rod 2 on the upper surface of the first reinforcing plate 9. Both the first reinforcing plate 9 and the second reinforcing plate 10 are made of steel alloy.

[0030] Specifically, a positioning block 11 is provided on the lower surface of the second reinforcing piece 10, and a positioning hole 12 is fixedly connected to the upper surface of the first reinforcing piece 9. The positioning hole 12 and the positioning block 11 are slidably connected.

[0031] Specifically, both the positioning block 11 and the positioning hole 12 are circular ring designs, and the inner and outer diameters of the positioning block 11 are larger than the inner and outer diameters of the positioning hole 12.

[0032] In this embodiment, how to improve the impact resistance of the quartz accelerometer body 1, combined with... Figures 1 to 3 The specific implementation method is as follows: the first adhesive layer 5 is placed close to the inner wall of the quartz accelerometer body 1, and the first adhesive layer 5 and the inner wall of the quartz accelerometer body 1 are firmly connected by the frosted layer 4. The first adhesive layer 5 and the second adhesive layer 6 have different thicknesses, forming a gradient adhesive layer structure, which imitates the structure of a buffer material and improves the absorption efficiency of impact energy. At the same time, it can fill the gap between the inner wall of the quartz accelerometer body 1 and the component, enhance the structural rigidity and vibration resistance. The phenolic epoxy resin maintains elasticity in the range of -55℃ to +200℃, absorbs impact energy and isolates vibration transmission, ensuring that the quartz flexible accelerometer for the petroleum inclinometer can still absorb impact energy in harsh environments.

[0033] In this embodiment, how to improve the bonding strength of the first adhesive layer 5 and the second adhesive layer 6, combined with Figure 4 The specific implementation method is as follows: the second adhesive layer 6 is brought close to the bottom of the first adhesive layer 5 from below, and the limiting groove 8 enters the limiting block 7. The mechanical interlocking effect enhances the bonding force, while providing elastic deformation space and relieving thermal stress. This not only improves the bonding strength, but also improves the thermal shock resistance.

[0034] In this embodiment, how to improve the structural strength of the support rod 2, combined with Figure 5 The specific implementation method is as follows: First, the first reinforcing plate 9 is connected and fixed to the support rod 2. The bottom end of the first reinforcing plate 9 is fixedly connected to the upper surface of the quartz accelerometer body 1. Then, the second reinforcing plate 10 is installed on the first reinforcing plate 9 and fixedly connected to the support rod 2. At high temperature, the bimetallic plate structure composed of the first reinforcing plate 9 and the second reinforcing plate 10 bends towards the low temperature side to offset the prestress of the quartz pendulum plate caused by the thermal expansion of the shell. In the range of -55℃ to +175℃, the bias temperature coefficient is ≤100μg / ℃, which meets the requirements of extreme environment of oil well logging.

[0035] In this embodiment, how to quickly assemble the first reinforcing sheet 9 and the second reinforcing sheet 10, combined with... Figure 6 The specific implementation method is as follows: the lower surface of the second reinforcing piece 10 is brought close to the upper surface of the first reinforcing piece 9, and the positioning hole 12 is inserted into the positioning block 11 for quick positioning. Then, the connection is ensured by bonding. The design of the positioning block 11 and the positioning hole 12 improves the assembly speed of the first reinforcing piece 9 and the second reinforcing piece 10.

[0036] The present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to the present invention. Furthermore, it is understood that the steps in the method of the present invention embodiments can be adjusted, combined, and deleted according to actual needs, and the structure in the device of the present invention embodiments can be combined, divided, and deleted according to actual needs.

[0037] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A small, impact-resistant accelerometer specifically designed for oilfield inclinometers, characterized in that, include: Quartz accelerometer body (1), support rod (2), mounting hole (3), frosted layer (4), first adhesive layer (5), and second adhesive layer (6); The quartz accelerometer body (1) has a support rod (2) symmetrically installed at the top. The quartz accelerometer body (1) has mounting holes (3) symmetrically opened on the surface. The bottom of the quartz accelerometer body (1) is an equilateral hexagonal prism. The inner wall of the quartz accelerometer body (1) is fixedly connected to a frosted layer (4). The inner wall of the frosted layer (4) is fixedly connected to a first adhesive layer (5). A second adhesive layer (6) is installed inside the first adhesive layer (5).

2. The small, impact-resistant accelerometer for petroleum inclinometers according to claim 1, characterized in that: The thickness of the first adhesive layer (5) is greater than the thickness of the second adhesive layer (6).

3. The small, impact-resistant accelerometer for petroleum inclinometers according to claim 2, characterized in that: The inner wall of the first adhesive layer (5) is symmetrically provided with limiting blocks (7), and the surface of the second adhesive layer (6) is symmetrically fixedly connected with limiting grooves (8), and the limiting grooves (8) are slidably connected with the limiting blocks (7).

4. The small, impact-resistant accelerometer for petroleum inclinometers according to claim 3, characterized in that: Both the limiting block (7) and the limiting groove (8) adopt a rectangular design, and the length of the limiting block (7) is greater than the length of the limiting groove (8).

5. The small, impact-resistant accelerometer for petroleum inclinometers according to claim 1, characterized in that: The support rod (2) is fixedly connected to a first reinforcing plate (9) which is fixedly connected to the upper surface of the quartz accelerometer body (1), and a second reinforcing plate (10) which is fixedly connected to the support rod (2) is installed on the upper surface of the first reinforcing plate (9).

6. The small, impact-resistant accelerometer for petroleum inclinometers according to claim 5, characterized in that: The second reinforcing piece (10) has a positioning block (11) on its lower surface, and the first reinforcing piece (9) has a positioning hole (12) fixedly connected to its upper surface. The positioning hole (12) and the positioning block (11) slide through each other.

7. The small, impact-resistant accelerometer for petroleum inclinometers according to claim 6, characterized in that: Both the positioning block (11) and the positioning hole (12) are circular ring designs, and the inner and outer diameters of the positioning block (11) are larger than the inner and outer diameters of the positioning hole (12).

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