Novel time-delay body structure suitable for sound velocity measurement probe tube for solid mineral exploration

Abstract

The utility model relates to the technical field of acoustic logging instruments, in particular to a novel delay body structure suitable for an acoustic velocity measuring probe for solid mineral exploration, which comprises a first delay body, a connecting sleeve is sleeved at one end of the first delay body, and a second delay body is arranged in the other end of the connecting sleeve. The second sound delaying body and the first sound delaying body are both fixedly connected with abutting rings, the second sound delaying body and the first sound delaying body are both sleeved with fixing bases, one fixing base is fixedly connected with a receiving crystal, the other fixing base is fixedly connected with an emitting crystal, and the two fixing bases are fixed through a fixing mechanism. According to the sound delay structure, the sound wave duration delay effect in the logging instrument is improved, the mechanical strength of the sound delay structure is enhanced, data measured by the instrument is more accurate, and the anti-seismic performance is more reliable.

Description

Technical Field

[0001] This utility model relates to the field of acoustic logging instrument technology, and in particular to a novel time-delay structure suitable for acoustic velocity measurement probes in solid mineral exploration. Background Technology

[0002] Solid mineral exploration refers to the process of systematically investigating and exploring solid mineral resources (such as metallic minerals, non-metallic minerals, and coal in energy minerals) on and beneath the Earth's surface using various technologies such as geology, geophysics, geochemistry, and remote sensing. In solid mineral exploration, the performance of the sound velocity measurement probe is crucial. A novel time-delay structure is suitable for this purpose, optimizing sound velocity measurement results and achieving precise control of sound wave propagation through special structural design, material selection, and component assembly.

[0003] Sound waves emitted by a crystal enter a delaying body, which is made of a polymer material with specific acoustic impedance and acoustic properties. The speed of the sound waves changes as they propagate within it, thus achieving a delay effect.

[0004] However, because the delay structure requires the fabrication of interlaced delay grooves on the delay body, the delay effect is poor, and the strength of the delay body is greatly reduced, which seriously affects the overall stability and lifespan of the instrument. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, which result in poor sound delay effects and a significant reduction in the strength of the delay body, severely impacting the overall stability and lifespan of the instrument. Therefore, this invention proposes a novel delay body structure suitable for sound velocity measurement probes in solid mineral exploration.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A novel delay body structure suitable for sound velocity measurement probes in solid mineral exploration is designed, comprising a first delay body, a connecting sleeve fitted at one end of the first delay body, and a second delay body disposed inside the other end of the connecting sleeve. Both the second and first delay bodies are fixedly connected to abutment rings, and both the second and first delay bodies are fitted with fixing seats. A receiving crystal is fixedly connected to one of the fixing seats, and a transmitting crystal is fixedly connected to the other fixing seat. The two fixing seats are fixed by a fixing mechanism.

[0008] Preferably, the fixing mechanism includes a nut, and both the first and second sound-delaying bodies are provided with external threads, and the nut is threadedly connected to the external threads.

[0009] Preferably, the nut is a stainless steel nut.

[0010] Preferably, both the first and second acoustic delay bodies are made of polymer materials.

[0011] Preferably, a limiting groove is formed on the inner wall of the connecting sleeve, and a limiting strip is fixedly connected to both the first and second sound delay bodies, the limiting strip being slidably disposed in the limiting groove.

[0012] Preferably, multiple fixing holes are equally spaced on the outer walls of the first and second sound delay bodies, and a knob is threaded through the first and second sound delay bodies, with the lower end of the knob threadedly connected to the fixing hole.

[0013] Preferably, limiting parts are fixedly connected to the outer walls of both the first and second delay bodies. The limiting parts have an L-shaped structure, and the upper end of the limiting parts is located directly above the knob.

[0014] Preferably, the polymer material is polyurethane.

[0015] The present invention proposes a novel time-delay structure for sound velocity measurement probes in solid mineral exploration. The beneficial effects are: it improves the sound wave duration delay effect in logging instruments, strengthens the mechanical strength of the delay structure, helps to improve the lifespan of the structure, and makes the instrument measurement data more accurate and the seismic performance more reliable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a novel time-delay body structure for a sound velocity measurement probe suitable for solid mineral exploration proposed in this utility model.

[0017] Figure 2 A perspective view of a novel time-delay structure for a sound velocity measurement probe suitable for solid mineral exploration proposed in this utility model;

[0018] Figure 3 This invention proposes a novel time-delay structure for sound velocity measurement probes used in solid mineral exploration. Figure 2 Enlarged view of section A in the middle.

[0019] In the figure: 1. First delaying element; 2. Fixing base; 3. Nut; 4. Connecting sleeve; 5. Receiving crystal; 6. Transmitting crystal; 7. Fixing hole; 8. Limiting strip; 9. Knob; 10. Limiting part; 11. Second delaying element; 12. Abutment ring; 13. Limiting groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Example 1: Refer to Figure 1-3 A novel delay body structure for sound velocity measurement probes in solid mineral exploration includes a first delay body 1. A connecting sleeve 4 is fitted at one end of the first delay body 1, and a second delay body 11 is disposed inside the other end of the connecting sleeve 4. An abutment ring 12 is fixedly connected to both the second delay body 11 and the first delay body 1. A fixing seat 2 is fitted on both the second delay body 11 and the first delay body 1. A receiving crystal 5 is fixedly connected to one fixing seat 2, and a transmitting crystal 6 is fixedly connected to the other fixing seat 2. The two fixing seats 2 are fixed by a fixing mechanism. By fixing the transmitting crystal 6 and the receiving crystal 5, the source distance is adjusted and maintained, thereby extending the time from the transmitting crystal 6 to the receiving crystal 5.

[0022] The fixing mechanism includes a nut 3. Both the first acoustic body 1 and the second acoustic body 11 are provided with external threads. The nut 3 is connected to the external threads. By using the nut 3 to cooperate with the abutment ring 12, the connection strength between the fixing seat 2 and the acoustic body is enhanced after the nut 3 is tightened, making the crystal installation more stable. At the same time, the nut 3 is a stainless steel nut to prevent corrosion.

[0023] Both the first sound delay element 1 and the second sound delay element 11 are made of high-molecular polymer material, namely polyurethane. Polyurethane has good sound insulation properties, and its internal porous structure can effectively absorb sound wave energy and reduce sound wave propagation. At the same time, it has good elasticity, which can buffer the impact of external vibrations on the sound delay element to a certain extent, maintaining the stability of the sound delay and sound insulation effect.

[0024] Example 2: In Example 1, due to the lack of precise limiting design when connecting the first delay element 1 and the second delay element 11, it is easy for the transmitting crystal 6 and the receiving crystal 5 to misalign and become skewed when they are connected. (Refer to...) Figure 1-3 In another preferred embodiment of this utility model, based on embodiment 1, a limiting groove 13 is formed on the inner wall of the connecting sleeve 4. Limiting strips 8 are fixedly connected to both the first and second delay bodies 1 and 11. The limiting strips 8 are slidably disposed within the limiting groove 13. By using the limiting strips 8 and the limiting groove 13, the first and second delay bodies 1 and 11 are limited, ensuring precise alignment of the transmitting crystal 6 and the receiving crystal 5. This avoids deviation of the sound wave propagation path and instability of the propagation distance due to crystal misalignment, making the duration of sound wave transmission and reception controllable and stable, improving the delay effect. The precise limiting during connection allows the first and second delay bodies 1 and 11 to form a more regular and stable assembly structure with the connecting sleeve 4, dispersing external forces, enhancing the overall structure's resistance to deformation, ensuring stable operation of the delay bodies and crystals, and facilitating data accuracy and vibration resistance.

[0025] Example 3: In Example 2, since the distance between the transmitting crystal 6 and the receiving crystal 5 is fixed, it cannot be adjusted when the downhole space is limited, affecting the adaptability of the structure. (Refer to...) Figure 1-3 In another preferred embodiment of this utility model, based on embodiment 2, multiple fixing holes 7 are evenly spaced on the outer walls of the first delay body 1 and the second delay body 11. A knob 9 is threaded through both the first delay body 1 and the second delay body 11, with the lower end of the knob 9 threadedly connected to the fixing hole 7. By adjusting the positions of the first delay body 1 and the second delay body 11 within the connecting sleeve 4, and by connecting the knob 9 to the fixing holes 7 at different positions, the relative positions of the first delay body 1 and the second delay body 11 within the connecting sleeve 4 are adjusted, thus changing the distance between the transmitting crystal 6 and the receiving crystal 5. When the downhole space is different, the source distance can be adjusted accordingly to adapt to the sound wave propagation requirements, optimize the time from sound wave transmission to reception, flexibly ensure the delay effect, and lock the position by the knob 9, so that the delay body forms a stable support structure within the connecting sleeve, enhancing the overall resistance of the delay body to external forces 9, improving mechanical strength and shock resistance, and ensuring stable crystal operation and accurate data.

[0026] Example 4: In Example 3, when the knob 9 is loosened, it is easy for the knob 9 to come out of the threaded hole, resulting in loss. Refer to... Figure 1-3 As another preferred embodiment of the present invention, based on embodiment 3, a limiting part 10 is fixedly connected to the outer wall of both the first sound delay body 1 and the second sound delay body 11. The limiting part 10 has an L-shaped structure, and the upper end of the limiting part 10 is located directly above the knob 9. The limiting part 10 plays a role in limiting the maximum displacement of the knob 9, preventing the knob 9 from dislodging from the threaded hole and causing it to be lost.

[0027] Working principle: During use, the limiting strip 8 and the limiting groove 13 are used to precisely connect the first delay body 1, the second delay body 11 and the connecting sleeve 4 to ensure that the transmitting crystal 6 and the receiving crystal 5 are aligned; by using the knob 9 and different fixing holes 7, the position of the first delay body 1 and the second delay body 11 in the connecting sleeve 4 is adjusted to adapt to the downhole space and adjust the source distance; the fixing seat 2 is fixed by the nut 3 and the abutment ring 12 to stabilize the transmitting crystal 6 and the receiving crystal 5.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A new type of delay body structure suitable for solid mineral exploration acoustic velocity measurement probe, comprising a first acoustic delay body (1), characterized in that, A connecting sleeve (4) is fitted on one end of the first sound delay body (1), and a second sound delay body (11) is provided inside the other end of the connecting sleeve (4). An abutment ring (12) is fixedly connected to both the second sound delay body (11) and the first sound delay body (1). A fixing seat (2) is fitted on both the second sound delay body (11) and the first sound delay body (1). A receiving crystal (5) is fixedly connected to one of the fixing seats (2), and a transmitting crystal (6) is fixedly connected to the other fixing seat (2). The two fixing seats (2) are fixed by a fixing mechanism.

2. A new type of delay body structure suitable for solid mineral exploration sound velocity measurement probe according to claim 1, characterized in that, The fixing mechanism includes a nut (3), and both the first sound-delaying body (1) and the second sound-delaying body (11) are provided with external threads. The nut (3) is threadedly connected to the external threads.

3. A new type of delay body structure suitable for solid mineral exploration acoustic velocity measurement probe according to claim 2, characterized in that, The nut (3) is a stainless steel nut.

4. The novel time-delay structure for a sound velocity measuring probe suitable for solid mineral exploration according to claim 1, characterized in that, Both the first acoustic delay body (1) and the second acoustic delay body (11) are made of high molecular polymer materials.

5. A novel time-delay structure for a sound velocity measurement probe suitable for solid mineral exploration according to claim 1, characterized in that, The inner wall of the connecting sleeve (4) is provided with a limiting groove (13), and a limiting strip (8) is fixedly connected to both the first sound delay body (1) and the second sound delay body (11). The limiting strip (8) is slidably disposed in the limiting groove (13).

6. The novel time-delay structure for a sound velocity measurement probe suitable for solid mineral exploration according to claim 1, characterized in that, Multiple fixing holes (7) are provided at equal intervals on the outer walls of the first sound delay body (1) and the second sound delay body (11). A knob (9) is threaded through the first sound delay body (1) and the second sound delay body (11), and the lower end of the knob (9) is threadedly connected to the fixing hole (7).

7. A novel time-delay structure for a sound velocity measurement probe suitable for solid mineral exploration according to claim 6, characterized in that, Both the first sound delay body (1) and the second sound delay body (11) have a limiting part (10) fixedly connected to their outer walls. The limiting part (10) has an L-shaped structure and its upper end is located directly above the knob (9).

8. A novel time-delay structure for a sound velocity measurement probe suitable for solid mineral exploration according to claim 4, characterized in that, The polymer material is polyurethane.

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