Large-current single-core logging cable simulation device

Abstract

The utility model relates to the field of petroleum logging, in particular to a large-current single-core logging cable simulation device design. Petroleum logging operation needs to use a ground instrument to supply power to an underground instrument and issue commands through a cable, the underground instrument needs to generally adopt a motor as a power source, the motor needs a large working current under the condition of a large load, and the large current causes large heat loss on a logging cable of thousands of meters. A single-core logging cable is an armored cable, and the cable which is thousands of meters long occupies a large space and is inconvenient to use for daily testing of an instrument. The large-current single-core logging cable simulation device aims at designing a simple device conforming to the resistance-capacitance characteristic of a single-core logging cable, and the device strengthens the heat dissipation design aiming at the special situation of large current and meets the requirement for single-core logging cable simulation in the large-current environment.

Description

Technical Field

[0001] The utility model relates to the technical field of petroleum logging, in particular to a high-current single-core logging cable simulation device. Background Art

[0002] Well logging technology is a downhole oil and gas exploration method. It is an important means to accurately discover and describe oil and gas reservoirs, and is an indispensable scientific basis for the assessment of oil and gas reserves and production. Well logging technology is an important part of petroleum science and technology, and is one of the disciplines with the most high-tech content in the oil and gas industry. The commonly used logging system consists of a cable car, a logging ground control panel, and downhole measuring instruments. The ground control panel communicates and transmits power to the downhole measuring instruments through the logging cable. The logging cable is usually an armored cable with a length of more than 7,000 meters. The cable resistance and capacitance characteristics are relatively complex, and the power loss on the cable is large during long-distance transmission; the single-core logging cable is usually several thousand meters long and requires a special cable car for transportation. It is very inconvenient to use the logging cable during the instrument design and debugging process. In order to solve the above problems, a high-current single-core logging cable simulation device is proposed. Utility Model Content

[0003] According to the above existing technical problems, the utility model provides a large current single-core logging cable simulation device, characterized in that it includes a front panel assembly, a box assembly, a relay group, a cross countersunk screw, a right heat dissipation module, a rear panel assembly, a cover plate, a main control circuit board, a bottom plate heat dissipation module, a mounting lining plate, a left heat dissipation module, and a switching power supply. The front end of the box assembly is provided with a front panel assembly, the rear end of the box assembly is provided with a rear panel assembly, the upper end of the box assembly is provided with a cover plate, the bottom surface of the box assembly is provided with a mounting lining plate, the mounting lining plate is provided with a relay group, the bottom plate heat dissipation module is provided with a switching power supply on the mounting lining plate, the left heat dissipation module is fixedly provided on the left side of the box assembly by a cross countersunk screw, the right heat dissipation module is fixedly provided on the right side of the box assembly by a cross countersunk screw, and the main control circuit board is provided on the bottom plate heat dissipation module by screws;

[0004] Furthermore, the box assembly is assembled from aluminum profiles, with air inlet holes processed on both sides and panel mounting slots on the front and back.

[0005] Further, the front panel assembly includes a band switch, a front panel body, a three-in-one socket, a safety banana test hole, and a cable length selection knob. The three-in-one socket is arranged in front of the front panel body, two safety banana test holes are arranged in front of the front panel body, a cable length selection knob is arranged in front of the front panel body, a band switch is arranged behind the cable length selection knob, and the band switch is electrically connected to the main control circuit board;

[0006] Further, the left heat dissipation module includes an outer heat dissipation plate, a cross combination screw A, a stainless steel hexagonal column, a 100W high-power resistor, an inner heat dissipation plate, a fan A, and a cross pan head screw. The outer heat dissipation plate is bonded to the box assembly, and the outer heat dissipation plate and the inner heat dissipation plate are separated by a stainless steel hexagonal column. A cross combination screw A is arranged on the inner heat dissipation plate. Six 100W high-power resistors are installed on the inner heat dissipation plate. The bottom of the 100W high-power resistor is bonded to the back side of the inner heat dissipation plate, and the top is bonded to the outer heat dissipation plate. There is thermal grease at the bonding position. Two sets of fans A are arranged on the wing plate on one side of the inner heat dissipation plate through a cross pan head screw.

[0007] Furthermore, the left heat dissipation module and the right heat dissipation module have the same structure and are installed in opposite directions;

[0008] Further, the bottom plate heat dissipation module includes a bottom plate body, a 50W power resistor, a cross combination screw B, and a single-head stainless steel hexagonal column. The bottom surface of the bottom plate body has a heat dissipation wing plate, and the upper surface is installed with 12 50W power resistors through a cross combination screw B. The upper plane of the bottom plate body has four threaded holes, and a single-head stainless steel hexagonal column is installed in each threaded hole. A main control circuit board is arranged above the single-head stainless steel hexagonal column;

[0009] Furthermore, the rear panel assembly includes a rear panel body, a fan B, a fan guard, a self-tapping countersunk screw, and a rocker switch. Two fans B are installed on the rear panel body, and each fan B is provided with a fan guard via a self-tapping countersunk screw. A rocker switch is provided on the rear panel body, and the rocker switch is electrically connected to the fan B.

[0010] Beneficial effects of the utility model:

[0011] The utility model is applied to the simulation test of single-core logging cables that need to carry large currents. The large-current single-core logging cable simulation device adopts a chassis-type structure as a whole, with three heat dissipation modules inside. Single-core logging cables are usually several thousand meters long and require special cable cars for transportation. It is very inconvenient to use logging cables during instrument design and debugging. The utility model aims at the characteristics of logging cables that carry large currents, utilizes multiple groups of high-power resistors to simulate logging cables, and adopts band switches to complete the selection of cables of different lengths. High-power resistors are installed on different heat dissipation modules. At different cable lengths, the resistors are distributed on the modules as evenly as possible, which greatly increases the heat dissipation efficiency of the box. The utility model has a simple patent structure, good modular performance, and is portable and expandable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall assembly structure of a high current single-core logging cable simulation device of the utility model;

[0013] Figure 2This is a schematic diagram of the explosion structure of a high current single-core logging cable simulation device of the utility model;

[0014] Figure 3 This is a schematic diagram of the front panel assembly structure of a high-current single-core logging cable simulation device of the utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the left heat dissipation module of a high-current single-core logging cable simulation device of the utility model;

[0016] Figure 5 This is a schematic diagram of the structure of a bottom plate heat dissipation module of a high-current single-core logging cable simulation device of the utility model;

[0017] Figure 6 This is a schematic diagram of the structure of the rear panel assembly of a high-current single-core logging cable simulation device of the utility model;

[0018] As shown in the figure: 1. Front panel assembly, 2. Box assembly, 3. Relay group, 4. Cross countersunk screw, 5. Right heat dissipation module, 6. Rear panel assembly, 7. Cover, 8. Main control circuit board, 9. Bottom plate heat dissipation module, 10. Installation lining, 11. Left heat dissipation module, 12. Switch power supply, 13. Band switch, 14. Front panel body, 15. Three-in-one socket, 16. Safety banana test hole, 17. Cable length selection knob, 18. External heat dissipation plate, 19. Cross combination screw A, 20. Stainless steel hexagonal column, 21. 100W high-power resistor, 22. Internal heat dissipation plate, 23. Fan A, 24. Cross pan head screw, 25. Bottom plate body, 26. 50W power resistor, 27. Cross combination screw B, 28. Single-head stainless steel hexagonal column, 29. Rear panel body, 30. Fan B, 31. Fan protection cover, 32. Self-tapping countersunk screw, 33. Rocker switch. DETAILED DESCRIPTION

[0019] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] Example 1

[0023] The utility model provides a large current single-core logging cable simulation device, which is characterized by comprising a front panel component (1), a box component (2), a relay group (3), a cross countersunk screw (4), a right heat dissipation module (5), a rear panel component (6), a cover plate (7), a main control circuit board (8), a bottom plate heat dissipation module (9), an installation lining plate (10), a left heat dissipation module (11), a switch power supply (12), a front end of the box component (2) is provided with the front panel component (1), a rear end of the box component (2) is provided with the rear panel component (6), and the upper part of the box component (2) is provided with a plurality of heat dissipation modules. A cover plate (7) is arranged at the end, a mounting lining plate (10) is arranged on the bottom surface of the box assembly (2), a relay group (3) is arranged on the mounting lining plate (10), a bottom plate heat dissipation module (9) is arranged on the mounting lining plate (10), a switch power supply (12) is arranged on the mounting lining plate (10), a left heat dissipation module (11) is fixedly arranged on the left side of the box assembly (2) by means of a cross countersunk screw (4), a right heat dissipation module (5) is fixedly arranged on the right side of the box assembly (2) by means of a cross countersunk screw (4), and a main control circuit board (8) is arranged on the bottom plate heat dissipation module (9) by means of screws;

[0024] Furthermore, the box assembly (2) is assembled from aluminum profiles, with air inlet holes processed on both sides and panel mounting slots on the front and rear.

[0025] Furthermore, the front panel assembly (1) comprises a band switch (13), a front panel body (14), a three-in-one socket (15), a safety banana test hole (16), and a cable length selection knob (17); the three-in-one socket (15) is arranged in front of the front panel body (14); two safety banana test holes (16) are arranged in front of the front panel body (14); a cable length selection knob (17) is arranged in front of the front panel body (14); the band switch (13) is arranged behind the cable length selection knob (17); and the band switch (13) is electrically connected to the main control circuit board (8);

[0026] Furthermore, the left heat dissipation module (11) comprises an outer heat dissipation plate (18), a cross combination screw A (19), a stainless steel hexagonal column (20), a 100W high-power resistor (21), an inner heat dissipation plate (22), a fan A (23), and a cross pan head screw (24). The outer heat dissipation plate (18) is bonded to the box assembly (2). The outer heat dissipation plate (18) and the inner heat dissipation plate (22) are separated by the stainless steel hexagonal column (20). The inner heat dissipation plate (22) is provided with a cross combination screw A (19). Six 100W high-power resistors (21) are installed on the inner heat dissipation plate (22). The bottom of the 100W high-power resistor (21) is bonded to the back side of the inner heat dissipation plate (22), and the top is bonded to the outer heat dissipation plate (18). There is thermal grease at the bonding position. Two sets of fans A (23) are provided on the wing plate on one side of the inner heat dissipation plate (22) through a cross pan head screw (24).

[0027] Furthermore, the left heat dissipation module (11) and the right heat dissipation module (5) have the same structure and are installed in opposite directions;

[0028] Furthermore, the bottom plate heat dissipation module (9) comprises a bottom plate body (25), a 50W power resistor (26), a cross combination screw B (27), and a single-head stainless steel hexagonal column (28). The bottom surface of the bottom plate body (25) is provided with a heat dissipation wing plate, and 12 50W power resistors (26) are installed on the upper surface through the cross combination screw B (27). The upper plane of the bottom plate body (25) has four threaded holes, and a single-head stainless steel hexagonal column (28) is installed in each threaded hole. A main control circuit board (8) is arranged above the single-head stainless steel hexagonal column (28);

[0029] Furthermore, the rear panel assembly (6) includes a rear panel body (29), a fan B (30), a fan guard (31), a self-tapping countersunk screw (32), and a rocker switch (33). Two fans B (30) are installed on the rear panel body (19), each fan B (30) is provided with a fan guard (31) through a self-tapping countersunk screw (32), and a rocker switch (33) is provided on the rear panel body (29), and the rocker switch (33) is electrically connected to the fan B (30).

[0030] Example 2

[0031] The band switch (13) is installed into the mounting hole on the back side of the front panel body (14), the positioning holes are aligned, and the front side of the front panel body (14) is tightened with the own nut. The cable length selection knob (17) is installed on the adjustment shaft of the band switch (13) with an Allen wrench, and the mark of the cable length selection knob (17) is aligned with the corresponding gear position. The four safety banana test holes (16) are installed from the front side of the front panel body (14) and tightened with the own nut. The three-in-one socket (15) is installed from the front side of the front panel body (14) and tightened with the countersunk screw and nut.

[0032] Take 8 stainless steel hexagonal columns (20) M4×16 and install them on the flat side of the outer heat sink (18). Solder the leads of the two ends of the 100W high-power resistor (21) and cover them with heat shrink tubes. Apply thermal conductive silicone grease to the flat surface of the 100W high-power resistor (21) and fit it to the flat surface of the inner heat sink (22). Tighten and fix it with a cross combination screw A (19) M3×8. Apply grease to the top of the high-power resistor (21) and fit it to the flat surface of the outer heat sink (18). Place the fan A (23) on the support column of the inner heat sink (22) and tighten and fix it with 8 cross pan head screws (24) M4×45. Complete the assembly of the left heat sink module (11). Repeat the above operation to complete the assembly of the right heat sink module (5).

[0033] It is better to weld the leads at both ends of the 50W power resistor (26) than to use heat shrink tubes, apply thermal conductive silicone grease to the flat end of the 50W power resistor (26), tighten it with a cross combination screw B (27) M3×8 to fix it on the flat surface of the bottom plate body (25), and install 4 single-head stainless steel hexagonal columns (28) M3×20 on the flat surface of the bottom plate body (25);

[0034] Place the fan B (30) inside the rear panel body (29), with the trademark of the fan B (30) facing outwards, and the fan exhausts air outwards. On the outside of the rear panel body (29), use eight self-tapping countersunk screws (32) M5×12 to fix two fan protective covers (31) to the mounting holes of the fan B (30).

[0035] The relay group (3), the switching power supply (12) and the bottom plate heat dissipation module (9) are fixed on the mounting lining (10), and the mounting lining (10) is installed on the bottom of the box assembly (2). The left heat dissipation module (11) and the right heat dissipation module (5) are respectively fixed on both sides of the inside of the box assembly (2) by cross countersunk screws (4) M4×20. The front panel assembly (1) and the rear panel assembly (6) are installed through the front and rear mounting grooves of the box assembly. The main control circuit board (8) is fixed on the single-head stainless steel hexagonal column (28) M3×30 of the bottom plate heat dissipation module (9). With reference to the circuit wiring diagram, the assembly of various circuit components and connectors is completed. After the above operations are completed, soft silicone is applied to all screws and nuts to prevent loosening. After the application of glue, the soft silicone is cured for 24 hours to reach the maximum strength. The cover plate (7) is covered to complete the assembly of the entire box.

[0036] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The various components mentioned in the utility model are common technologies in the existing field. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A high current single-core logging cable simulation device, characterized in that: It includes a front panel assembly, a box assembly, a relay group, a cross countersunk screw, a right heat dissipation module, a rear panel assembly, a cover plate, a main control circuit board, a bottom plate heat dissipation module, a mounting lining plate, a left heat dissipation module, and a switching power supply. The front panel assembly is arranged at the front end of the box assembly, the rear panel assembly is arranged at the rear end of the box assembly, the cover plate is arranged at the upper end of the box assembly, the mounting lining plate is arranged on the bottom surface of the box assembly, the relay group is arranged on the mounting lining plate, the bottom plate heat dissipation module is arranged on the mounting lining plate, and the switching power supply is arranged on the mounting lining plate. The left heat dissipation module is fixedly arranged on the left side of the box assembly by a cross countersunk screw, and the right heat dissipation module is fixedly arranged on the right side of the box assembly by a cross countersunk screw, and the main control circuit board is arranged on the bottom plate heat dissipation module by screws.

2. A high current single-core logging cable simulation device according to claim 1, characterized in that: The box assembly is assembled from aluminum profiles, with air inlet holes processed on both sides and panel installation slots at the front and back.

3. A high current single-core logging cable simulation device according to claim 2, characterized in that: The front panel assembly includes a band switch, a front panel body, a three-in-one socket, a safety banana test hole, and a cable length selection knob. The three-in-one socket is arranged in front of the front panel body, two safety banana test holes are arranged in front of the front panel body, a cable length selection knob is arranged in front of the front panel body, a band switch is arranged behind the cable length selection knob, and the band switch is electrically connected to the main control circuit board.

4. A high current single-core logging cable simulation device according to claim 3, characterized in that: The left heat dissipation module includes an outer heat dissipation plate, a cross combination screw A, a stainless steel hexagonal column, a 100W high-power resistor, an inner heat dissipation plate, a fan A, and a cross pan head screw. The outer heat dissipation plate is bonded to the box assembly, and the outer heat dissipation plate and the inner heat dissipation plate are separated by a stainless steel hexagonal column. A cross combination screw A is arranged on the inner heat dissipation plate. Six 100W high-power resistors are installed on the inner heat dissipation plate. The bottom of the 100W high-power resistor is bonded to the back side of the inner heat dissipation plate, and the top is bonded to the outer heat dissipation plate. There is thermal grease at the bonding position. Two groups of fans A are arranged on the wing plate on one side of the inner heat dissipation plate through a cross pan head screw.

5. A high current single-core logging cable simulation device according to claim 4, characterized in that: The left heat dissipation module and the right heat dissipation module have the same structure but are installed in opposite directions.

6. A high current single-core logging cable simulation device according to claim 5, characterized in that: The base plate heat dissipation module includes a base plate body, a 50W power resistor, a cross combination screw B, and a single-head stainless steel hexagonal column. The lower surface of the base plate body is provided with a heat dissipation wing plate, and 12 50W power resistors are installed on the upper surface through a cross combination screw B. The upper plane of the base plate body has four threaded holes, and a single-head stainless steel hexagonal column is installed in each threaded hole. A main control circuit board is arranged above the single-head stainless steel hexagonal column.

7. A high current single-core logging cable simulation device according to claim 6, characterized in that: The rear panel assembly includes a rear panel body, a fan B, a fan guard, a self-tapping countersunk screw, and a rocker switch. Two fans B are installed on the rear panel body, and each fan B is provided with a fan guard via a self-tapping countersunk screw. A rocker switch is provided on the rear panel body, and the rocker switch is electrically connected to the fan B.

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