CN210071995U - Automatic jumper device for detecting insulativity of logging cable - Google Patents

Abstract

The utility model relates to the technical field of cable insulation detection, and relates to an automatic jumper device for logging cable insulation detection. The insulating shell is provided with the positive terminal of the insulation shaker, the negative terminal of the insulation shaker, and eight test interfaces. The positive terminal of the insulation shaker is respectively connected with the normally open contacts of the eight positive relays, and the negative terminal of the insulation shaker They are respectively connected with the normally open contacts of eight negative relays, and each test interface is respectively connected with a normally open contact of a positive relay and a normally open contact of a negative relay. The utility model realizes the automatic detection of the insulation of the logging cable, does not need to perform repeated wiring and disconnection work, can automatically select the cable core or the cable outer armor for the insulation test, shortens the test time, and can avoid the generation of the insulation shaker at the same time. The high voltage can cause injury to workers.

Description

Automatic jumper device for testing insulation of logging cable

technical field

The utility model relates to the technical field of cable insulation detection, which is an automatic jumper device for the insulation detection of logging cables.

Background technique

At present, when measuring the insulation properties of logging seven-core cables, mechanical insulation meters and digital insulation meters are mostly used. The insulation between the cable cores is measured. Taking the mechanical insulation meter as an example, the following problems exist when measuring the insulation of the logging seven-core cable:

1. After accurately connecting the two cable cores to be measured with the crocodile head of the mechanical insulation meter, shake the handle to measure, because the cable head cores are columnar objects and the distance between them is small, the crocodile clips often bite. If the cable core does not stop or touch other cable cores, it needs to be reconnected; and after one measurement, the connection should be removed, and the other two cable cores should be re-selected for connection measurement, that is, a seven-core cable should be measured. The measurement needs to be repeated 31 times. Ideally, it takes 15 seconds to calculate each time. It still takes 480 seconds, which is equivalent to more than 7.5 minutes. This process is time-consuming and labor-intensive;

2. During on-site operation, at least two people are required to complete the operation. One person is responsible for connecting the insulation meter and the ferrule in the cable head, and the other person is responsible for operating the insulation meter. Without any one person, the work cannot be carried out normally;

3. Since the voltage supplied by the two ends of the insulation meter is generally a high voltage of 500V to 1000V, it is more dangerous and must be operated with caution. Continuous power supply operation cannot be performed, and the measurement must be reconnected after the power is cut off. At the same time, due to the simple connection between the cable core and the insulation meter, the operator needs to control it by hand, and may be hit by the high voltage released by the insulation meter (with insulating gloves will affect the fine operation accuracy of the connection between the insulation meter and the cable core). , on-site construction workers often can not do).

SUMMARY OF THE INVENTION

The utility model provides an automatic jumper device for detecting the insulation of logging cables, which overcomes the shortcomings of the prior art and can effectively solve the problems of cumbersome, time-consuming and labor-intensive testing processes in the existing testing of the insulation properties of logging cables. question.

The technical scheme of the present utility model is realized by the following measures: an automatic jumper device for detecting the insulation property of logging cables, comprising an insulating shell, and a control unit, a positive electrode relay group, a negative electrode relay group, and a positive electrode relay group are arranged in the insulating shell. The relay group includes eight positive relays, and the negative relay group includes eight negative relays. The insulating shell is provided with the positive terminal of the insulation shaker, the negative terminal of the insulation shaker, eight test interfaces, a display unit, and the positive pole of the insulation shaker. The terminals are respectively connected with the normally open contacts of the eight positive relays, the negative terminals of the insulation shaker are respectively connected with the normally open contacts of the eight negative relays, and each test interface is respectively connected with the normally open contacts of one positive relay and one The normally open contacts of the negative relay are connected, and the coils of the eight positive relays, the coils of the eight negative relays, and the display unit are all connected to the control unit.

The following are further optimizations or/and improvements to the above-mentioned technical solutions of the utility model:

The above-mentioned insulating housing can also be provided with a manual operation control unit and a mode switching unit for switching between the manual state and the automatic state, and both the manual operation control unit and the mode switching unit are connected to the control unit.

The above-mentioned manual operation control unit may include a positive electrode selection module, a negative electrode selection module, and a relay switching module, and the positive electrode selection module, the negative electrode selection module and the relay switching module are all connected to the control unit.

The above-mentioned insulating casing can also be provided with a start-stop control unit and a power supply interface, and the start-stop control unit and the power supply interface are both connected to the control unit.

The above-mentioned display unit may include a display screen, a first indicator group for displaying the conduction state of the positive relays in the positive relay group, and a second indicator group for displaying the conduction state of the negative relays in the negative relay group.

The utility model has the advantages of simple structure and convenient use, realizes the automatic detection of the insulation of the logging cable, does not need to perform repeated wiring and disconnection work, and can automatically select the cable core or the cable outer armor for the insulation test through the control unit, thereby shortening the test time. At the same time, after connecting the 7 cable cores and the outer armor of the cable with the eight test interfaces in one-to-one correspondence, the staff does not need to touch the utility model, thereby avoiding the high voltage generated by the insulation shaker from causing damage to the staff. , to ensure the safety of staff.

Description of drawings

Accompanying drawing 1 is the three-dimensional structure schematic diagram of the preferred embodiment of the utility model.

Figure 2 is a schematic diagram of the circuit structure of the preferred embodiment of the present invention.

The codes in the accompanying drawings are respectively: 1 is an insulating casing, 2 is a mode switching unit, 3 is a positive selection module, 4 is a negative selection module, 5 is a relay switching module, 6 is a start-stop control unit, and 7 is a power interface, 8 is the display screen, 9 is the first indicator group, 10 is the second indicator group, K2 is the positive terminal of the insulation shaker, K1 is the negative terminal of the insulation shaker, N is the test interface, M1 is the positive relay, M2 Negative relay.

Detailed ways

The present invention is not limited by the following examples, and specific implementations can be determined according to the technical solutions and actual conditions of the present invention.

In the present utility model, for the convenience of description, the description of the relative positional relationship of each component is described according to the layout of Figure 1 of the specification, such as: the positions of front, rear, upper, lower, left, right, etc. The relationship is determined according to the layout direction of the drawings in the specification.

Below in conjunction with embodiment and accompanying drawing, the utility model is further described:

As shown in Figures 1 and 2, the logging cable insulation detection automatic jumper device includes an insulating housing 1, and the insulating housing 1 is provided with a control unit, a positive relay group, and a negative relay group. The positive relay group includes Eight positive relays M1, and the negative relay group includes eight negative relays M2. The insulating housing 1 is provided with an insulating rocker positive terminal K1, an insulating rocker negative terminal K2, eight test interfaces N, a display unit, and an insulating The positive terminal K1 of the shaker is respectively connected with the normally open contacts of the eight positive relays M1, the negative terminal K2 of the insulating shaker is respectively connected with the normally open contacts of the eight negative relays M2, and each test interface N is respectively connected with a positive terminal The normally open contact of relay M1 is connected to the normally open contact of a negative relay M2.

The above-mentioned positive terminal K1 and negative terminal K2 of the insulating rocker are respectively used for connecting the positive pole and the negative pole of the insulation rocker. The eight test ports N are respectively used to connect the 7 cable cores and the cable outer armor of the logging cable. The positive relay group includes eight positive relays M1, and the normally open contacts of the eight positive relays M1 are connected with the eight test interfaces N in one-to-one correspondence, which are used to select the high voltage (500V or 1000V) connected to the positive pole of the insulation shaker. Test the cable core or cable sheath; the negative relay group includes eight negative relays M2, and the normally open contacts of the eight negative relays M2 are connected with the eight test ports N in a one-to-one correspondence, which is used to select the negative electrode height of the insulation shaker. Cable core or cable sheath for voltage (500V or 1000V) connection. The control unit can be a STC12C5A60S2 chip, which is used for automatic insulation test control, that is, automatic control of the on-off of a relay in the positive relay group and the negative relay group. The display unit is used to display the test interface N currently being tested.

When using, the specific process is as follows:

1. Connect the positive and negative poles of the insulation shaker to the positive terminal K1 of the insulation shaker and the negative terminal K2 of the insulation shaker respectively; connect the 7 cable cores and cable armor of the logging cable to the eight test interfaces N-1. A corresponding connection;

2. There is a set of test time in the control unit (determined according to the actual situation such as cable length), select a positive relay M1 and a negative relay M2 within the test time, and energize its coil to make its corresponding normally open contact Closed, so that the test interface N corresponding to the positive relay M1 is connected to the positive electrode of the insulation shaker, so that the test interface N corresponding to the negative relay M2 is connected to the negative pole of the insulation shaker;

3. The insulation shaker tests the insulation between the cable cores or the cable sheaths connected to the above two test interfaces N;

4. When the test time is over, the control unit disconnects the selected positive relay M1 and negative relay M2, and the test time is re-timed, and the next set of tests is performed in a cycle of 2 to 4 steps.

It can be seen from the above that the utility model has a simple structure and is easy to use, realizes the automatic detection of the insulation of the logging cable, does not need to perform repeated wiring and disconnection work, and can automatically select the cable core or the cable outer armor for insulation testing through the control unit. , shortens the test time; at the same time, the staff does not need to touch the utility model after connecting the 7 cable cores and the outer armor of the cable with the eight test ports N in one-to-one correspondence, thereby avoiding the high voltage generated by the insulation shaker. Injure the staff and ensure the safety of the staff.

According to actual needs, the above-mentioned automatic jumper device for insulation detection of logging cable can be further optimized or/and improved:

As shown in Figures 1 and 2, the insulating housing 1 is also provided with a manual operation control unit and a mode switching unit 2 for switching between the manual state and the automatic state. The manual operation control unit and the mode switching unit 2 are both connected with the control unit connect.

The above-mentioned mode switching unit 2 is used to switch between the manual state and the automatic state; when switching to the manual state, the staff sends an instruction to the control unit by manually operating the control unit, and manually selects a positive relay M1 and a negative relay that need to be turned on. M2.

As shown in Figures 1 and 2, the manual operation control unit includes a positive selection module 3, a negative selection module 4, and a relay switching module 5. The positive selection module 3, the negative selection module 4 and the relay switching module 5 are all connected to the control unit.

The above-mentioned positive selection module 3 can be a button. When in use, the staff presses the positive selection module 3 to send a command to select and control the positive relay group to the control unit; the negative selection module 4 can be a key, and the staff presses the negative selection module during use. 4. Send a command to select and control the negative relay group to the control unit.

The above-mentioned relay switching module 5 may include a forward cycle relay selection button and a reverse cycle relay selection button. During use, if the staff has pressed the positive electrode selection module 3, the forward cycle relay selection button or the reverse cycle relay selection button can be used to select the desired guide. A positive relay M1 to be turned on; if the staff has pressed the negative selection module 4, a negative relay M2 to be turned on can be selected through the positive cycle relay selection button or the reverse cycle relay selection button.

As shown in Figures 1 and 2, the insulating housing 1 is also provided with a start-stop control unit 6 and a power supply interface 7, and the start-stop control unit 6 and the power supply interface 7 are both connected to the control unit.

The above-mentioned start-stop control unit 6 is used to control the start and stop of the present invention. The power interface 7 can be a USB power supply interface or a 5V DC power interface.

As shown in Figures 1 and 2, the display unit includes a display screen 8, a first indicator group 9 that displays the conduction state of the positive relay M1 in the positive relay group, and a second indicator that displays the conduction state of the negative relay M2 in the negative relay group. Light set 10.

The above-mentioned first indicator group 9 may include eight indicator lights of different colors, and the conduction states of the eight positive relays M1 are displayed in a one-to-one correspondence; the second indicator group 10 may include eight indicator lights of different colors, one by one. Correspondingly, the conduction states of the eight negative relays M2 are displayed.

The above technical features constitute the best embodiment of the present invention, which has strong adaptability and best implementation effect, and can increase or decrease unnecessary technical features according to actual needs to meet the needs of different situations.

Claims (6)

1. A logging cable insulation detection automatic jumper device is characterized in that comprising an insulating casing, in the insulating casing is provided with a control unit, a positive electrode relay group, a negative electrode relay group, and the positive electrode relay group comprises eight positive electrode relays, and the negative electrode The relay group includes eight negative relays, and the insulating shell is provided with the positive terminal of the insulating shaker, the negative terminal of the insulating shaker, eight test interfaces, and a display unit. The normally open contacts are connected, the negative terminals of the insulation shaker are respectively connected with the normally open contacts of the eight negative relays, and each test interface is respectively connected with a normally open contact of a positive relay and a normally open contact of a negative relay. The coils of the eight positive relays, the coils of the eight negative relays, and the display unit are all connected to the control unit. 2. The logging cable insulation detection automatic jumper device according to claim 1 is characterized in that a manual operation control unit and a mode switching unit for switching between manual state and automatic state are also provided on the insulating housing, and the manual Both the operation control unit and the mode switching unit are connected with the control unit. 3. The logging cable insulation detection automatic jumper device according to claim 2, characterized in that the manual operation control unit comprises a positive electrode selection module, a negative electrode selection module, a relay switching module, a positive electrode selection module, a negative electrode selection module and a relay switching module The modules are all connected to the control unit. 4. The logging cable insulation detection automatic jumper device according to claim 1, 2 or 3, characterized in that the insulating housing is also provided with a start-stop control unit and a power supply interface, and the start-stop control unit and a power supply interface are connected to the control unit. 5. The logging cable insulation detection automatic jumper device according to claim 1, 2 or 3, characterized in that the display unit comprises a display screen, a first indicator group showing the conduction state of the positive relay in the positive relay group, and The second indicator group showing the conduction state of the negative relay in the negative relay group. 6. The logging cable insulation detection automatic jumper device according to claim 4, characterized in that the display unit comprises a display screen, a first indicator group for displaying the conduction state of the positive relay in the positive relay group, and a negative relay group for displaying The second indicator group for the conduction state of the middle and negative relays.