Underground detector for geophysical geophysical prospecting

Abstract

The utility model discloses an underground geophone for geophysical prospecting, which relates to the field of geophones and comprises a mounting shell and a cable, a sensor is mounted in the mounting shell, a wire holder is mounted at one end of the mounting shell, a connector lug is connected to one end of the cable, and a connecting assembly is arranged between the mounting shell and the cable. The connecting shell is slidably sleeved outside the mounting shell and the cable, the connecting shell is clamped outside the mounting shell and the cable through the locking assembly, the sealing assembly is arranged outside the connector lug, and the sealing assembly and the locking assembly form linkage. According to the utility model, by using the cooperative use mode of the mounting shell, the cable, the connector lug and the connecting assembly, under the action of the locking assembly, the cable and the connector lug can keep a stable connection state with the mounting shell, the sealing assembly can seal the joint of the connector under the action of the locking assembly, and the locking assembly can be detached, so that the cable and the connector lug can be conveniently assembled and disassembled. Therefore, the cable and the mounting shell can be directly split.

Description

Technical Field

[0001] The utility model relates to the field of geophones, in particular to a downhole geophone for geophysical prospecting. Background Art

[0002] Downhole geophones are widely used in fields such as oil exploration and mineral resource exploration. For example, in oil exploration, they can be used to monitor the propagation of seismic waves underground, thereby inferring the rock structure and oil and gas distribution underground. In mineral resource exploration, they can be used to monitor the propagation of seismic waves underground, thereby inferring the distribution of minerals underground.

[0003] Downhole physical detectors are usually composed of a cylindrical shell, a sensor and a cable. Since the cylindrical shell and the sensor are placed underground, the cable not only transmits data, but also serves to lift the cylindrical shell and the sensor. In order to ensure the stability of the connection between one end of the cable and the cylindrical shell and the sensor, the cylindrical shell and the sensor are usually integrated with the cable. When the sensor fails or is damaged, the cable, cylindrical shell and sensor cannot be used, which causes the cable to be idle. It is not convenient to directly disassemble the cable and assemble it with a new sensor. Utility Model Content

[0004] The purpose of the present utility model is to provide a downhole geophone for geophysical prospecting to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a downhole geophone for geophysical prospecting, comprising a mounting housing and a cable, wherein a sensor is mounted inside the mounting housing;

[0006] A terminal block is installed at one end of the mounting housing, a terminal head connected to the terminal block is connected to one end of the cable, and a connecting component is provided between the mounting housing and the cable, the connecting component comprising:

[0007] A connecting housing slidably sleeved on the outside of the mounting housing and the cable;

[0008] A locking assembly, wherein the connecting housing is snap-fitted to the exterior of the mounting housing and the cable via the locking assembly;

[0009] A sealing component is provided on the outside of the terminal head and is linked with the locking component.

[0010] Preferably, the connection assembly further comprises:

[0011] A fixing collar, the fixing collar being fixedly sleeved on the outside of the cable, a through hole matching the fixing collar being formed on one side of the connecting housing, and the fixing collar being linked to the locking assembly;

[0012] The sealing ring is fixedly sleeved on the outside of the cable, and the outer wall of the sealing ring is slidably sleeved with the through hole.

[0013] Preferably, the locking assembly comprises:

[0014] a connecting plate, one end of which is fixedly connected to the mounting housing, and the connecting plate is located inside the connecting housing;

[0015] a locking plate, the locking plate being clamped to the exterior of the connecting housing;

[0016] a first locking rod, one end of which is fixedly connected to the locking plate, and one end of which is clamped to the fixing collar;

[0017] A second locking rod, one end of which is fixedly connected to the locking plate, and one end of which is linked to the sealing assembly.

[0018] Preferably, a first limiting hole is provided on the outer wall of the connecting shell and one side of the connecting plate, the outer wall of the first locking rod is slidably engaged with the inner cavity of the first limiting hole, the outer wall of the fixing ring is provided with a locking groove, and one end of the outer wall of the first locking rod is slidably engaged with the inner cavity of the locking groove.

[0019] Preferably, a second limiting hole is provided on the outer wall of the connecting shell and one side of the connecting plate, the outer wall of the second locking rod is slidably connected to the inner cavity of the second limiting hole, and the other end of the second locking rod is provided with a first inclined slope.

[0020] Preferably, the sealing assembly comprises:

[0021] A sealing cover is slidably sleeved on the outside of the terminal head;

[0022] A sealing gasket, the sealing gasket being fixedly connected to one side of the sealing cover, and the one side of the sealing gasket being pressed and fitted with the mounting housing;

[0023] A rubber sleeve, wherein the rubber sleeve is fixedly sleeved on the outside of the cable, and one end of the rubber sleeve is fixedly connected to the sealing cover;

[0024] A locking ring is fixedly connected to the other side of the sealing cover, and an outer wall of the locking ring is provided with a second inclined slope that matches the first inclined slope at the end of the second locking rod.

[0025] Preferably, the locking assembly further comprises:

[0026] a positioning plate slidably disposed on an end portion of the locking plate;

[0027] A positioning block, one side of which is fixedly connected to the locking plate, and a positioning groove matching the positioning block is provided on the side of the connecting shell.

[0028] Preferably, a mounting hole is opened at the end of the positioning plate, and the end of the inner cavity of the mounting hole is fixedly sleeved with a limiting ring. A fixing rod is fixedly connected to one side of the positioning plate, and one end of the fixing rod passes through the limiting ring and is fixedly connected to the limiting block. The outer wall of the fixing rod is slidably sleeved with a limiting spring, and the limiting spring is located between the limiting spring and the limiting block.

[0029] Technical effects and advantages of this utility model:

[0030] The utility model utilizes the coordinated use of an installation shell, a cable, a terminal head and a connection assembly. The connection assembly includes a connection shell, a fixing ring, a sealing ring, a locking assembly and a sealing assembly. Under the action of the locking assembly, the cable and the terminal head can maintain a stable connection state with the installation shell, and the sealing assembly can seal the connection of the terminal head under the action of the locking assembly. By removing the locking assembly, the cable and the installation shell can be directly disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0032] Figure 2 This is a schematic diagram of the internal structure of the connecting shell of the utility model.

[0033] Figure 3 This is a schematic diagram of the internal structure of the sealing cover of the utility model from above.

[0034] In the figure: 1. Mounting shell; 2. Cable; 3. Terminal head; 4. Connecting assembly; 41. Connecting shell; 42. Fixing collar; 43. Sealing ring; 44. Locking assembly; 441. Connecting plate; 442. Locking plate; 443. First locking rod; 444. Second locking rod; 445. Locking groove; 446. Positioning plate; 447. Positioning block; 448. Fixing rod; 449. Limiting spring; 4410. Limiting collar; 4411. Limiting block; 45. Sealing assembly; 451. Sealing cover; 452. Sealing gasket; 453. Rubber sleeve; 454. Locking ring. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] The utility model provides Figure 1-3 The downhole geophone for geophysical prospecting shown in the figure includes a mounting shell 1 and a cable 2. A sensor is installed inside the mounting shell 1. When seismic waves reach the geophone, the sensor will feel the vibration and convert it into an electrical signal. The size and frequency of this electrical signal are related to the intensity and frequency of the seismic waves. The electrical signal is then transmitted to a recording device on the ground through the cable 2. The recording device processes and analyzes these signals to obtain information about the underground structure. A terminal block is installed at one end of the mounting shell 1, and a terminal head 3 connected to the terminal block is connected to the cable 2 at one end. The cable 2 is electrically connected to the sensor through the terminal head 3 and the terminal block. A connection is provided between the mounting shell 1 and the cable 2. The connection component 4 includes a connection shell 41, a locking component 44 and a sealing component 45. The connection shell 41 is slidably sleeved on the outside of the mounting shell 1 and the cable 2. The connection shell 41 is clamped to the outside of the mounting shell 1 and the cable 2 through the locking component 44. Under the action of the locking component 44, the cable 2 can maintain a stable connection with the mounting shell 1. The sealing component 45 is provided on the outside of the terminal head 3. The sealing component 45 and the locking component 44 form a linkage. Under the action of the locking component 44, the sealing component 45 can seal the connection between the terminal head 3 and the terminal seat.

[0037] Furthermore, the connecting component 4 also includes a fixing ring 42 and a sealing ring 43. The fixing ring 42 is fixedly sleeved on the outside of the cable 2. A through hole matching the fixing ring 42 is opened on one side of the connecting shell 41. The fixing ring 42 is linked with the locking component 44. The sealing ring 43 is fixedly sleeved on the outside of the cable 2. The outer wall of the sealing ring 43 is slidably sleeved with the through hole. The sealing ring 43 is made of rubber and can seal the through hole on the connecting shell 41.

[0038] The locking member 44 includes a connecting plate 441, a locking plate 442, a first locking rod 443 and a second locking rod 444. One end of the connecting plate 441 is fixedly connected to the mounting shell 1, the connecting plate 441 is located inside the connecting shell 41, the locking plate 442 is clamped to the outside of the connecting shell 41, one end of the first locking rod 443 is fixedly connected to the locking plate 442, one end of the first locking rod 443 is clamped to the fixing collar 42, one end of the second locking rod 444 is fixedly connected to the locking plate 442, one end of the second locking rod 444 is linked to the sealing member 45, the outer wall of the connecting shell 41 and one side of the connecting plate 441 are provided with a first limiting hole, the outer wall of the first locking rod 443 is slidably sleeved with the inner cavity of the first limiting hole, the outer wall of the fixing collar 42 is provided with a locking groove 445, and the first locking rod 4 One end of the outer wall of 43 is slidably engaged with the inner cavity of the locking groove 445, so that the first locking rod 443 is engaged between the connecting shell 41, the connecting plate 441 and the fixing ring 42, so that the connecting shell 41, the installation shell 1 and the cable 2 can be in a stable connection state. The outer wall of the connecting shell 41 and one side of the connecting plate 441 are provided with a second limiting hole, and the outer wall of the second locking rod 444 is slidably engaged with the inner cavity of the second limiting hole. The other end of the second locking rod 444 is provided with a first inclined slope, and the second locking rod 444 can again engage and limit the connecting shell 41 and the connecting plate 441, pulling the locking plate 442 away from the connecting shell 41 to separate the first locking rod 443 and the second locking rod 444 from the connecting shell 41, so that the connecting shell 41, the installation shell 1 and the cable 2 can be disassembled.

[0039] Furthermore, the locking assembly 44 also includes a positioning plate 446 and a positioning block 447. The positioning plate 446 is slidably arranged at the end of the locking plate 442. One side of the positioning block 447 is fixedly connected to the locking plate 442. A positioning groove matching the positioning block 447 is provided on the side of the connecting shell 41. The positioning block 447 is snapped into the positioning groove, so that the locking plate 442 can be stably snapped to the side of the connecting shell 41. A mounting hole is provided at the end of the positioning plate 446. The end of the inner cavity of the mounting hole is fixedly sleeved with a limiting ring 441. 0. A fixing rod 448 is fixedly connected to one side of the positioning plate 446. One end of the fixing rod 448 passes through the limiting ring 4410 and is fixedly connected to the limiting block 4411. The outer wall of the fixing rod 448 is slidably sleeved with the limiting spring 449. The limiting spring 449 is located between the limiting spring 449 and the limiting block 4411. The limiting spring 449 can give the positioning plate 446 an elastic force toward the locking plate 442 through the limiting block 4411 and the fixing rod 448, so that the positioning block 447 and the locking plate 442 maintain a stable clamping state.

[0040] In particular, the sealing assembly 45 includes a sealing cover 451, a sealing gasket 452, a rubber sleeve 453 and a locking ring 454. The sealing cover 451 is slidably sleeved on the outside of the terminal head 3, the sealing gasket 452 is fixedly connected to one side of the sealing cover 451, one side of the sealing gasket 452 is squeezed and fitted with the mounting housing 1, the rubber sleeve 453 is fixedly sleeved on the outside of the cable 2, one end of the rubber sleeve 453 is fixedly connected to the sealing cover 451, the rubber sleeve 453 is made of rubber and can undergo a certain degree of compression deformation, and the locking ring 454 is fixedly connected to the other side of the sealing cover 451 The outer wall of the locking ring 454 is provided with a second inclined slope that matches the first inclined slope at the end of the second locking rod 444. The partial slope view of the locking ring 454 is triangular, so that when one end of the second locking rod 444 squeezes the outside of the locking ring 454, the second locking rod 444 can push the sealing cover 451 toward the installation shell 1 through the locking ring 454, so that the sealing gasket 452 and the installation shell 1 are in an extruded fit state, and then the sealing gasket 452, the sealing cover 451 and the rubber sleeve 453 can seal the terminal 3 at one end of the cable 2.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A downhole geophone for geophysical exploration, comprising a mounting housing (1) and a cable (2), wherein a sensor is mounted inside the mounting housing (1); It is characterized by: A wiring seat is installed at one end of the installation housing (1), a wiring head (3) connected to the wiring seat is connected to one end of the cable (2), and a connecting component (4) is provided between the installation housing (1) and the cable (2), and the connecting component (4) comprises: A connecting housing (41) is slidably sleeved on the outside of the mounting housing (1) and the cable (2); A locking assembly (44), wherein the connecting housing (41) is clamped to the outside of the mounting housing (1) and the cable (2) via the locking assembly (44); A sealing component (45) is provided on the outside of the terminal head (3), and the sealing component (45) is linked to the locking component (44).

2. A downhole geophone for geophysical exploration according to claim 1, characterized in that: The connecting component (4) further comprises: A fixing collar (42), the fixing collar (42) being fixedly sleeved on the outside of the cable (2), a through hole matching the fixing collar (42) being provided on one side of the connecting shell (41), and the fixing collar (42) and the locking assembly (44) forming a linkage; A sealing ring (43) is fixedly sleeved on the outside of the cable (2), and an outer wall of the sealing ring (43) is slidably sleeved with the through hole.

3. The downhole geophone for geophysical exploration according to claim 2, characterized in that: The locking assembly (44) comprises: a connecting plate (441), one end of the connecting plate (441) being fixedly connected to the mounting housing (1), and the connecting plate (441) being located inside the connecting housing (41); A locking plate (442), the locking plate (442) being snap-connected to the exterior of the connecting housing (41); A first locking rod (443), one end of which is fixedly connected to the locking plate (442), and one end of which is clamped to the fixing collar (42); A second locking rod (444), one end of which is fixedly connected to the locking plate (442), and one end of which is linked to the sealing assembly (45).

4. The downhole geophone for geophysical exploration according to claim 3, characterized in that: A first limiting hole is provided on the outer wall of the connecting shell (41) and one side of the connecting plate (441); the outer wall of the first locking rod (443) is slidably engaged with the inner cavity of the first limiting hole; the outer wall of the fixing ring (42) is provided with a locking groove (445); one end of the outer wall of the first locking rod (443) is slidably engaged with the inner cavity of the locking groove (445).

5. The downhole geophone for geophysical exploration according to claim 3, characterized in that: A second limiting hole is provided on the outer wall of the connecting shell (41) and one side of the connecting plate (441); the outer wall of the second locking rod (444) is slidably sleeved with the inner cavity of the second limiting hole; and the other end of the second locking rod (444) is provided with a first inclined slope.

6. The downhole geophone for geophysical exploration according to claim 3, characterized in that: The sealing assembly (45) comprises: A sealing cover (451), wherein the sealing cover (451) is slidably sleeved on the outside of the terminal head (3); A sealing gasket (452), the sealing gasket (452) being fixedly connected to one side of the sealing cover (451), and one side of the sealing gasket (452) being pressed and fitted with the mounting housing (1); A rubber sleeve (453), wherein the rubber sleeve (453) is fixedly sleeved on the outside of the cable (2), and one end of the rubber sleeve (453) is fixedly connected to the sealing cover (451); A locking ring (454) is fixedly connected to the other side of the sealing cover (451), and an outer wall of the locking ring (454) is provided with a second inclined slope that matches the first inclined slope of the end of the second locking rod (444).

7. The downhole geophone for geophysical exploration according to claim 3, characterized in that: The locking assembly (44) further comprises: a positioning plate (446) slidably disposed on an end portion of the locking plate (442); A positioning block (447), one side of which is fixedly connected to the locking plate (442), and a positioning groove matching the positioning block (447) is provided on the side of the connecting shell (41).

8. The downhole geophone for geophysical exploration according to claim 7, characterized in that: A mounting hole is provided at the end of the positioning plate (446), and a limiting ring (4410) is fixedly sleeved on the end of the inner cavity of the mounting hole. A fixing rod (448) is fixedly connected to one side of the positioning plate (446), and one end of the fixing rod (448) passes through the limiting ring (4410) and is fixedly connected to the limiting block (4411). The outer wall of the fixing rod (448) is slidably sleeved on the limiting spring (449), and the limiting spring (449) is located between the limiting spring (449) and the limiting block (4411).

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