CN217721015U - Seven-core cable simulation box - Google Patents
Seven-core cable simulation box Download PDFInfo
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- CN217721015U CN217721015U CN202221812464.9U CN202221812464U CN217721015U CN 217721015 U CN217721015 U CN 217721015U CN 202221812464 U CN202221812464 U CN 202221812464U CN 217721015 U CN217721015 U CN 217721015U
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- core cable
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Abstract
The application discloses a seven-core cable simulation box which comprises a shell and a circuit board arranged in the shell; the circuit board is provided with at least one path of direct current instrument power supply circuit and at least one path of alternating current instrument power supply circuit; for each direct current instrument power supply circuit and each alternating current instrument power supply circuit, a corresponding connecting terminal is arranged on the front surface and the back surface of the shell, one end of each connecting terminal is positioned in the shell, and the other end of each connecting terminal is positioned outside the shell; the front and back of the housing are also provided with a ground terminal. The seven-core cable simulation box provided by the application can simulate the electrical characteristics of a seven-core cable; therefore, by means of the seven-core cable simulation box, the process of logging operation can be simulated more truly, and therefore the maintenance, the repair and the research and development of a logging instrument can be better carried out; the seven-core cable simulation box can be matched with most of alternating current powered logging instruments or direct current powered logging instruments for use, and is very light and easy to carry.
Description
Technical Field
The application relates to the technical field of oil exploration, in particular to a seven-core cable simulation box.
Background
During the process of oil exploration and development, a logging instrument needs to be put into an oil-water well through a cable to test the geological parameters of the well, so as to determine the oil-water containing condition of the stratum. The key point is that the logging instrument transmits the measured signal to the ground through a special cable in the testing process, and if the cables used in the logging process are classified according to cable cores, the cables comprise single-core cables, three-core cables and seven-core cables.
The logging cable used in the logging operation process is often longer, at least more than 1000 meters, and for convenient use, the cable is generally coiled on a vehicle-mounted roller and is generally stored in a large parking lot along with a vehicle when not used at ordinary times.
In the process of maintenance, repair and research and development of daily logging instruments, cables are required to be connected in a matching mode frequently in order to simulate the logging process, but the cables are generally parked in a large parking lot along with a vehicle and are far away from a daily working site, so that test equipment is required to be conveyed to the parking lot when the cables need to be used for maintaining, repairing and research and development of the logging instruments every time, and the operation is very inconvenient, and therefore the fact that a small and light cable simulator is used for simulating the electrical parameters of the cables is particularly urgent.
SUMMERY OF THE UTILITY MODEL
To this end, the present application provides a seven-core cable simulation box to simulate electrical parameters of a seven-core cable.
In order to achieve the above purpose, the present application provides the following technical solutions:
a seven-core cable simulation box comprises a shell and a circuit board arranged in the shell; the circuit board is provided with at least one path of direct current instrument power supply circuit and at least one path of alternating current instrument power supply circuit; for each direct current instrument power supply circuit and each alternating current instrument power supply circuit, a corresponding connecting terminal is arranged on the front surface and the back surface of the shell, one end of each connecting terminal is positioned in the shell, and the other end of each connecting terminal is positioned outside the shell; the front surface and the back surface of the shell are both provided with a grounding terminal;
each direct current instrument power supply circuit comprises a first resistor, a second resistor, a first capacitor, a second capacitor and a third capacitor, wherein one end of the first resistor is electrically connected with one end in the shell of a corresponding wiring terminal on the front surface of the shell, and one end of the first resistor is also electrically connected with a grounding terminal on the front surface or the back surface of the shell through the first capacitor; the other end of the first resistor is electrically connected with one end of the second resistor, and the other end of the first resistor is also electrically connected with a grounding terminal on the front surface or the back surface of the shell through a second capacitor; the other end of the second resistor is electrically connected with one end in the shell of the corresponding connecting terminal on the back surface of the shell, and the other end of the second resistor is also electrically connected with a grounding terminal on the front surface or the back surface of the shell through a third capacitor;
every way exchanges instrument supply circuit and all includes third resistance and fourth resistance, the one end of third resistance and the openly one end electric connection in corresponding binding post's the shell of shell, the other end of third resistance and the one end electric connection of fourth resistance, the other end of fourth resistance and the back of the shell on the one end electric connection in corresponding binding post's the shell.
Optionally, the housing includes an upper case and a lower case, the circuit board is fixed on the lower case by screws, and the upper case is fixed with the lower case by screws.
Further optionally, the circuit board is provided with five direct current instrument power supply circuits and two alternating current instrument power supply circuits.
Further alternatively, seven connection terminals and one ground terminal, which are arranged at equal intervals, are provided at both the upper portion of the front surface and the upper portion of the rear surface of the lower case.
Further optionally, the upper casing and the lower casing are both made of aluminum alloy.
Optionally, the resistance values of all the resistors are 50 Ω, and the rated power is 100W; the capacitance of all capacitors is 2.2 muF, and the rated working voltage is 400V.
Compared with the prior art, the method has the following beneficial effects that:
1. the seven-core cable simulation box provided by the application can simulate the electrical characteristics of a seven-core cable; therefore, by means of the seven-core cable simulation box, the process of logging operation can be simulated more truly, and therefore the logging instrument can be maintained, maintained and researched and developed better.
2. Five direct current instrument supply circuits and two alternating current instrument supply circuits are designed in the seven-core cable simulation box, and the seven-core cable simulation box can be matched with most alternating current powered logging instruments or direct current powered logging instruments for use.
3. The seven-core cable simulation box can be made of aluminum alloy materials and is very light and easy to carry.
Drawings
To more intuitively explain the prior art and the present application, several exemplary drawings are given below. It should be understood that the specific shapes, configurations, shown in the drawings, are not generally considered limitations on the practice of the present application; for example, it is within the ability of those skilled in the art to make routine adjustments or further optimizations based on the technical concepts disclosed in the present application and the exemplary drawings, for the increase/decrease/attribution of certain units (components), specific shapes, positional relationships, connection manners, dimensional ratios, and the like.
Fig. 1 is a schematic structural diagram of a seven-core cable simulation box provided in an embodiment of the present application;
FIG. 2 is a schematic diagram of a circuit board in an embodiment of the present application;
FIG. 3 is a schematic diagram of a PCB structure corresponding to a circuit board in the embodiment of the present application;
fig. 4 is an overall schematic view of a seven-core cable simulation box provided in an embodiment of the present application.
Description of reference numerals:
1. a circuit board;
2. an upper shell;
3. a lower case; 31. a wiring terminal; 32. and a ground terminal.
Detailed Description
The present application will be described in further detail below with reference to specific embodiments thereof, with reference to the accompanying drawings.
In the description of the present application: "plurality" means two or more unless otherwise specified. The terms "first", "second", "third", and the like in this application are intended to distinguish the referenced objects without particular meaning in the technical meaning (e.g., emphasis on degree or order of importance, etc.) being construed). The terms "comprising," "including," "having," and the like, are intended to be inclusive and mean "not limited to" (some elements, components, materials, steps, etc.).
In the present application, terms such as "upper", "lower", "left", "right", "middle", and the like are generally used for easy visual understanding with reference to the drawings, and are not intended to absolutely limit the positional relationship in an actual product. Changes in these relative positional relationships without departing from the technical concepts disclosed in the present application should also be considered as the scope of the present application.
In the embodiment of the application, as shown in fig. 1, there is provided a seven-core cable simulation box, comprising a housing and a circuit board 1 arranged in the housing; at least one direct current instrument power supply circuit and at least one alternating current instrument power supply circuit are arranged on the circuit board 1; for each direct current instrument power supply circuit and each alternating current instrument power supply circuit, a corresponding connecting terminal is arranged on the front surface and the back surface of the shell, one end of each connecting terminal is positioned in the shell, and the other end of each connecting terminal is positioned outside the shell; the front surface and the back surface of the shell are respectively provided with a grounding terminal, and the grounding terminals are the common ground ends of the circuits in the seven-core cable simulation box;
each direct current instrument power supply circuit comprises a first resistor, a second resistor, a first capacitor, a second capacitor and a third capacitor, one end of the first resistor is electrically connected with one end, located in the shell, of the corresponding wiring terminal on the front surface of the shell, and one end of the first resistor is also electrically connected with the grounding terminal on the front surface or the back surface of the shell through the first capacitor; the other end of the first resistor is electrically connected with one end of the second resistor, and the other end of the first resistor is also electrically connected with a grounding terminal on the front surface or the back surface of the shell through a second capacitor; the other end of the second resistor is electrically connected with one end, positioned in the shell, of the corresponding wiring terminal on the back surface of the shell, and the other end of the second resistor is also electrically connected with a grounding terminal on the front surface or the back surface of the shell through a third capacitor;
each alternating current instrument power supply circuit comprises a third resistor and a fourth resistor, one end of the third resistor is electrically connected with one end, located in the shell, of the corresponding wiring terminal on the front face of the shell, the other end of the third resistor is electrically connected with one end of the fourth resistor, and the other end of the fourth resistor is electrically connected with one end, located in the shell, of the corresponding wiring terminal on the back face of the shell.
Specifically, as shown in fig. 1, the housing includes an upper case 2 and a lower case 3, and the circuit board 1, the upper case 2, and the lower case 3 are each provided with a plurality of screw holes, so that the circuit board 1 is fixed to the lower case 3 by screws, and the upper case 2 is fixed to the lower case 3 by screws.
The alternating current power supply logging instrument used in logging operation generally needs 2 cable cores to supply power, and the power supply voltage is between AC 100V and 200V; the number of signal lines (corresponding to the number of cables required) is 2-4 according to different instruments, and the signal amplitude is below AC 10V. The logging instrument powered by direct current generally needs a cable core, the negative pole of a power supply is directly connected with the ground, and the power supply voltage is DC 50V-150V; the signal lines need 1-2 according to different instruments, some instruments directly share a cable core with a power supply, and the signal amplitude is below DC 15V.
The seven-core cable has the electrical characteristics that: impedance: 31 omega/1000 m; capacitive reactance: 0.18. Mu.F/1000 m. The cable simulation circuit is designed according to the electrical characteristics of instruments and cables to meet the requirements of different instruments.
Therefore, as a preferable scheme, five direct current instrument power supply circuits and two alternating current instrument power supply circuits are arranged on the circuit board 1. As shown in fig. 1, for each of the dc instrument power supply circuits and each of the ac instrument power supply circuits, a corresponding connection terminal 31 is disposed on each of the front and back surfaces of the lower casing 3, one end of each connection terminal 31 is located inside the lower casing 3, and the other end of each connection terminal 31 is located outside the lower casing 3; a ground terminal 32 is provided on each of the front and rear surfaces of the lower case 3, and one end of the ground terminal 32 may not be located outside the lower case 3 as shown in fig. 1 in actual production. That is, the upper portion of the front face and the upper portion of the rear face of the lower case 3 as a whole are provided with seven connection terminals 31 (corresponding to seven terminals in the dashed line frame of fig. 1) and one ground terminal 32 arranged at equal intervals.
As shown in fig. 2, the 1-5 channels on the circuit board 1 are signal channels or instrument dc power supply channels, the circuit is designed in a symmetrical pattern, and the input and output can be interchanged; 6-7 channels are AC power supply channels, and are specially used for supplying power to AC instruments. The resistance values of all the resistors are 50 omega, and the rated power is 100W; the capacitance of all capacitors is 2.2 muF, and the rated working voltage is 400V. That is to say, the circuit board 1 simulates the electrical characteristics of a cable with the length of about 3200 meters, the withstand voltage of the circuit can reach 400V, and the withstand voltage far exceeds the power supply range of a direct current instrument; the 50 omega and 100W resistor is selected to enable the circuit to bear the impact of current exceeding 1.0A. In addition, a schematic diagram of a PCB board structure of the circuit board 1 is shown in fig. 3.
In practical application, if the ac powered logging instrument is to be maintained, repaired and developed, the data output end of the ac powered logging instrument is connected to the end of one of the connection terminals corresponding to one of the ac instrument power supply circuits, which is located outside the housing, and then the end of the other connection terminal corresponding to the ac instrument power supply circuit, which is located outside the housing, is electrically connected to the data input end of the ground control device used in the logging operation process. Similarly, if the maintenance, the maintenance and the research and the development of the logging instrument with the direct current power supply are carried out, the data output end of the logging instrument with the direct current power supply is connected with one end, located outside the shell, of one wiring terminal corresponding to one direct current instrument power supply circuit, and then one end, located outside the shell, of the other wiring terminal corresponding to the direct current instrument power supply circuit is electrically connected with the data input end of the ground control equipment used in the logging operation process. Therefore, by means of the seven-core cable simulation box, the process of logging operation can be simulated more truly, and therefore the logging instrument can be maintained, maintained and researched and developed better.
Furthermore, the upper shell 2 and the lower shell 3 of the seven-core cable simulation box are both made of aluminum alloy, so that the seven-core cable simulation box is light and handy. In addition, a schematic diagram of the seven-core cable simulation box as a whole is shown in fig. 4, and the seven-core cable simulation box is in a cubic form, and is very easy to carry.
To sum up, the seven-core cable simulation box that this application provided can simulate out the electric characteristics of seven-core cable to can simulate out the process of logging operation more truthfully, carry out the maintenance, the maintenance and the research and development of logging instrument better.
Five direct current instrument supply circuits and two alternating current instrument supply circuits are designed in the seven-core cable simulation box, and the seven-core cable simulation box can be matched with most alternating current powered logging instruments or direct current powered logging instruments for use.
All the technical features of the above embodiments can be arbitrarily combined (as long as there is no contradiction between the combinations of the technical features), and for the sake of brevity, all the possible combinations of the technical features in the above embodiments are not described; these examples, which are not explicitly described, should be considered to be within the scope of the present description.
The present application has been described in considerable detail with reference to certain embodiments and examples thereof. It should be understood that several conventional adaptations or further innovations of these specific embodiments may also be made based on the technical idea of the present application; however, such conventional modifications and further innovations can also fall into the scope of the claims of the present application as long as they do not depart from the technical idea of the present application.
Claims (6)
1. A seven-core cable simulation box is characterized by comprising a shell and a circuit board arranged in the shell; the circuit board is provided with at least one path of direct current instrument power supply circuit and at least one path of alternating current instrument power supply circuit; for each direct current instrument power supply circuit and each alternating current instrument power supply circuit, a corresponding connecting terminal is arranged on the front surface and the back surface of the shell, one end of each connecting terminal is positioned in the shell, and the other end of each connecting terminal is positioned outside the shell; the front surface and the back surface of the shell are both provided with a grounding terminal;
each direct current instrument power supply circuit comprises a first resistor, a second resistor, a first capacitor, a second capacitor and a third capacitor, wherein one end of the first resistor is electrically connected with one end in the shell of a corresponding wiring terminal on the front surface of the shell, and one end of the first resistor is also electrically connected with a grounding terminal on the front surface or the back surface of the shell through the first capacitor; the other end of the first resistor is electrically connected with one end of the second resistor, and the other end of the first resistor is also electrically connected with a grounding terminal on the front surface or the back surface of the shell through a second capacitor; the other end of the second resistor is electrically connected with one end in the shell of the corresponding connecting terminal on the back surface of the shell, and the other end of the second resistor is also electrically connected with a grounding terminal on the front surface or the back surface of the shell through a third capacitor;
every way exchanges instrument supply circuit and all includes third resistance and fourth resistance, the one end of third resistance and the openly one end electric connection in corresponding binding post's the shell of shell, the other end of third resistance and the one end electric connection of fourth resistance, the other end of fourth resistance and the back of the shell on the one end electric connection in corresponding binding post's the shell.
2. The seven-core cable simulation box according to claim 1, wherein the housing comprises an upper case and a lower case, the circuit board is fixed to the lower case by screws, and the upper case is fixed to the lower case by screws.
3. The seven-core cable simulation box according to claim 2, wherein five direct current instrument power supply circuits and two alternating current instrument power supply circuits are arranged on the circuit board.
4. The seven-core cable analogue box according to claim 3, wherein seven connection terminals and one ground terminal are provided at equal intervals on each of the upper portion of the front surface and the upper portion of the rear surface of the lower case.
5. The seven-core cable simulation box according to claim 2, wherein the upper shell and the lower shell are both made of aluminum alloy.
6. The seven-core cable simulation box according to claim 1, wherein all resistors have a resistance of 50 Ω and a rated power of 100W; the capacitance of all capacitors is 2.2 muF, and the rated working voltage is 400V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221812464.9U CN217721015U (en) | 2022-07-14 | 2022-07-14 | Seven-core cable simulation box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221812464.9U CN217721015U (en) | 2022-07-14 | 2022-07-14 | Seven-core cable simulation box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217721015U true CN217721015U (en) | 2022-11-01 |
Family
ID=83779260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221812464.9U Active CN217721015U (en) | 2022-07-14 | 2022-07-14 | Seven-core cable simulation box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217721015U (en) |
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2022
- 2022-07-14 CN CN202221812464.9U patent/CN217721015U/en active Active
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