Auxiliary device for instrument control cabinet channel test and use method thereof

Abstract

The invention relates to the technical field of channel test devices, and aims to solve the problems of low efficiency, poor precision and high risk caused by poor or complex connection of equipment and terminals in an instrument control cabinet channel test process. The invention provides an auxiliary device for an instrument control cabinet channel test, which comprises a positive pole and a negative pole slidably arranged on the positive pole, the end parts of the positive pole and the negative pole extend towards the same direction to form connecting parts, the connecting part of the positive pole is provided with a positive contact, and the connecting part of the negative pole is provided with a negative contact. And interface lines are arranged in the positive pole and the negative pole. According to the invention, frequent connection and disconnection operation is not needed, the efficiency is high, connection of other non-test channels cannot be touched by mistake in the connection and disconnection process, and the operation risk is reduced. The condition of poor contact of the channel is overcome, and the channel testing precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of channel test devices, and in particular to an auxiliary device for channel testing of an instrumentation and control cabinet and a use method thereof. Background Art

[0002] At present, in the field of automation control of nuclear power plants and thermal power plants, crimping terminals are widely used in instrumentation and control cabinets. With the continuous improvement of automation level, the integration of instrumentation and control cabinets has gradually increased, and the termination density has also increased, resulting in a continuous reduction in maintenance space, which has brought great inconvenience to the commissioning and maintenance of power plants, especially for the large workload and inevitable instrumentation and control channel test work during commissioning and maintenance.

[0003] During the channel test, the multimeter or digital generator is usually fastened directly to the terminal slot or manually pressed on the terminal post. However, both methods have the following problems: the first method requires frequent disconnection and wiring operations, which is inefficient, and may accidentally touch the wiring of other non-test channels during the disconnection process, which poses a certain risk; the second method often results in poor channel contact, affecting the accuracy of channel testing. Summary of the invention

[0004] The purpose of the present invention is to provide an auxiliary device for instrumentation and control cabinet channel testing and a method of using the same, so as to solve the problems of low efficiency, poor accuracy and high risk caused by poor or complex connection between equipment and terminals during instrumentation and control cabinet channel testing.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] On the one hand, the present invention provides an auxiliary device for instrumentation and control cabinet channel testing, comprising a positive pole and a negative pole slidably arranged on the positive pole, the ends of the positive pole and the negative pole both have connecting parts extending in the same direction, a positive contact is installed on the connecting part of the positive pole, a negative contact is installed on the connecting part of the negative pole, and interface wires are provided in the positive pole and the negative pole.

[0007] In some embodiments, one end of the interface line is disposed at the connecting portion, and the other end passes through and extends from the ends of the positive pole and the negative pole.

[0008] In some embodiments, an instrumentation signal test clip is installed at the other end of the interface line.

[0009] In some embodiments, the positive electrode post and the negative electrode post are slidably connected via an engaging guide rail.

[0010] In some embodiments, a long groove is opened on the front side of the positive pole, a movable guide rail is installed in the long groove, and a row of teeth is installed on the negative pole, and the row of teeth is adapted to the movable guide rail.

[0011] In some embodiments, the positive contact and the negative contact are provided with internal threads, and the connecting portion is provided with external threads matching the internal threads.

[0012] In some embodiments, an LED indicator light is provided on the front side of the positive pole, and an LED light switch is installed on the back side of the negative pole.

[0013] In some embodiments, the positive contact and the negative contact are hollow copper structures.

[0014] In some embodiments, a power assist stopper is provided on the negative pole.

[0015] On the other hand, the present invention also provides a method for using an auxiliary device for instrumentation and control cabinet channel testing, comprising:

[0016] Step 1: Check whether the parts of the auxiliary device are available;

[0017] Step 2: Determine whether to turn on the LED lighting lamp according to environmental conditions, and if the light is poor, turn on the LED lighting lamp through the LED lighting switch;

[0018] Step 3: Select contacts of appropriate size according to the terminal aperture determined in step 2, then unscrew the pre-installed positive and negative contacts, and install the positive and negative contacts suitable for this channel test;

[0019] Step 4: According to the positive and negative pole spacing of the terminal determined in step 2, the distance between the positive and negative contacts is changed by pushing and pulling the back-pull assist stopper until it matches the terminal to be tested;

[0020] Step 5: Insert the positive and negative contacts of the auxiliary device into the terminals, and confirm that the connection is tight and not loose;

[0021] Step 6: Connect the channel test device to the auxiliary device via an interface line;

[0022] Step 7: Start the channel test equipment and begin the channel test.

[0023] Compared with the prior art, the auxiliary device for instrumentation and control cabinet channel test and the use method thereof provided by the present invention have the following beneficial effects:

[0024] The present invention does not need to frequently disconnect the wiring, has high efficiency, will not accidentally touch the wiring of other non-test channels during the disconnection process, and reduces the operation risk. The present invention overcomes the problem of poor channel contact and improves the accuracy of channel testing.

[0025] The two contacts of the present invention are connected by bolts, and contacts of different sizes can be detached and replaced, and are suitable for terminals with different apertures.

[0026] The present invention is compact as a whole and is convenient to use, especially for an integrated instrument control cabinet.

[0027] Furthermore, the positive and negative poles of the present invention are connected by a gear slide rail, and the contact distance can be adjusted by sliding, which is suitable for terminals of different sizes.

[0028] Furthermore, an illumination lamp is installed between the two contacts of the present invention to improve the test environment and enhance the test efficiency.

[0029] Furthermore, the contacts of the present invention are designed with a slightly elastic structure and are tightly connected to the terminals during testing, thereby improving test accuracy.

[0030] In addition, the use of the auxiliary device of the present invention can improve test efficiency and test accuracy and reduce test risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for the technical description.

[0032] Figure 1 A schematic diagram of the structure of an auxiliary device for instrumentation and control cabinet channel testing provided by the present invention;

[0033] Figure 2 A side view of the auxiliary device for instrumentation and control cabinet channel testing provided by the present invention;

[0034] Figure 3 A flow chart of the use of the auxiliary device for instrumentation and control cabinet channel testing provided by the present invention.

[0035] Description of reference numerals:

[0036] 1- positive contact, 2- LED lighting, 3- negative contact, 4- power-assisting stopper, 5- negative pole, 6- LED light switch, 7- positive pole, 8- interface wire, 9- engagement rail. DETAILED DESCRIPTION

[0037] The following is further explained in detail through specific implementation methods.

[0038] like Figure 1 and Figure 2As shown, the present invention provides an auxiliary device for channel testing of an instrumentation and control cabinet, the overall size of the auxiliary device is 200mm×20mm×40mm (excluding the interface line 8), and mainly includes a contact, a pole, an LED lighting lamp 2, an interface line 8, an engagement guide rail 9 and an assisting gear head 4. The contact includes a positive contact 1 and a negative contact 3. The contact uses a hollow copper structure, which will deform when subjected to pressure all around, so that the inserted terminal can be compressed by elastic force. The lower ends of the positive contact 1 and the negative contact 3 are both provided with threads (internal threads), which can be tightened with the threads (external threads) on the connecting parts of the positive pole 7 and the negative pole 5. The contacts are designed according to the sizes of the general terminal blocks in the instrumentation and control cabinet, with 3.5mm, 4mm, 5mm, and 6mm, and contacts of other sizes can be made according to actual needs.

[0039] Optionally, the two contacts (positive contact 1 and negative contact 3) are connected by bolts, and contacts of different sizes can be removed and replaced, which are suitable for terminals of different apertures.

[0040] The pole includes a positive pole 7 and a negative pole 5. The pole is a hollow copper structure with insulated multi-strand soft copper wire inside. The multi-strand soft copper wire is arranged inside the thread of the pole head at the contact end so that the contact can make good contact with the copper wire after installation. At the same time, the pole also contains a power supply device for the LED indicator 2, which is equipped with 4 9.5mm×2.7mm universal button batteries. The power supply circuit of the LED indicator 2 is insulated from the circuit of the channel test and does not interfere with each other. The outside of the pole is coated with an insulating frosted layer, and the meshing guide rails 9 of the positive and negative poles are embedded at the connection between the positive and negative poles.

[0041] The meshing guide rail 9 includes a movable guide rail and a row of teeth. The movable guide rail is embedded in the positive pole 7, and the row of teeth is embedded in the negative pole 5. The positive and negative poles are driven by the meshing relationship between the movable guide rail and the row of teeth, thereby achieving the purpose of adjusting the distance between the positive and negative contacts.

[0042] like Figure 1 As shown, the positive pole 7 and the negative pole 5 are L-shaped structures as a whole, one end of which is used to install the contact. The ends of the positive pole 7 and the negative pole 5 extend in the same direction with a connecting portion, which is used to detachably install the positive contact 1 and the negative contact 3.

[0043] The LED lighting lamp 2 is arranged on the front of the positive pole 7. The LED lighting lamp 2 is arranged on the same side as the positive contact 1 and the negative contact 3. The LED lighting lamp 2 is arranged between the positive contact 1 and the negative contact 3. The LED light switch 6 is arranged on the other side of the positive pole 7 (the back of the positive pole 7) to control the lighting and extinguishing of the LED lighting lamp 2. The LED lighting lamp 2 uses a 5mm power 0.06 watt LED lamp bead, which is embedded 0.5mm below the front end of the positive pole 7, and the power supply line is fixed in the positive pole 7. The LED light switch 6 is embedded in the center of the back of the positive pole. In the non-working state, press the LED light switch 6, the LED lighting lamp 2 lights up, and press the LED light switch 6 again, the LED lighting lamp 2 goes out.

[0044] The interface line 8 uses a multi-strand soft copper core wire with an insulation layer, one end of which is welded to the threaded end of the pole contact, and the other end extends to the outside of the auxiliary device. At the same time, a universal instrumentation signal test clip is welded, and the instrumentation signal test clip can be well and conveniently connected to the test equipment. The interface line 8 is fixed in the pole to avoid cable damage or breakage due to tension.

[0045] Optionally, the length of the interface line 8 is 1000 mm, meeting the requirements of channel testing.

[0046] The meshing guide rails 9 of the positive pole 7 and the negative pole 5 are made of wear-resistant engineering hard plastics, and the meshing guide rails 9 are embedded in the positive and negative poles. The positive pole 7 is a fixed end, inlaid with a movable guide rail, and the negative pole 5 is a movable end, inlaid with a row of teeth.

[0047] A booster stopper 4 is provided on the front of the negative pole 5, and the booster stopper 4 is arranged on the same side as the positive contact 1 and the negative contact 3. Pulling the booster stopper 4 can make the negative pole 5 slide relatively on the positive pole 7, thereby changing the distance between the positive contact 1 and the negative contact 3 to adapt to terminals with different spacings.

[0048] In addition, if Figure 3 As shown, the present invention also provides a method for using an auxiliary device for instrumentation and control cabinet channel testing, comprising the following steps:

[0049] Step 1: Auxiliary device inspection. This step mainly checks the following items:

[0050] Whether the device structure is complete; whether the LED lighting is usable; whether the contacts are deformed; whether the positive and negative poles can slide smoothly; whether the interface wire is cracked, and whether the wire clamp is usable.

[0051] Step 2: Check the terminal type.

[0052] Determine whether to turn on the LED lighting lamp 2 according to the environmental conditions. If the light is poor, turn on the LED lighting lamp through the LED lighting switch 6. Under good environmental conditions, check the type of the terminal, including the positive and negative pole spacing of the terminal and the aperture of the terminal.

[0053] Step 3: Replace the auxiliary device contacts.

[0054] Select the appropriate contact size according to the terminal aperture determined in step 2, and make sure that the contact has no deformation or other problems. Then unscrew the positive contact 1 and negative contact 3 pre-installed on the equipment, and install the positive and negative contacts suitable for this channel test.

[0055] Step 4: Adjust the auxiliary device contact spacing.

[0056] According to the positive and negative terminal spacing determined in step 2, the distance between the positive contact 1 and the negative contact 3 is changed by pushing the reverse pull assist stopper 4 until it matches the terminal to be tested.

[0057] Step 5: Connect the terminals.

[0058] Insert the positive contact 1 and negative contact 3 of the auxiliary device into the terminal and make sure that the connection is tight and not loose.

[0059] Step 6: Connect the Devices.

[0060] Connect the channel test equipment to the auxiliary device via the interface line 8. During the connection, pay attention to connecting the positive pole of the signal to the positive contact 1 and the negative pole to the negative contact 3.

[0061] Step 7: Start testing.

[0062] Start the channel test equipment and begin the channel test.

[0063] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An auxiliary device for instrumentation and control cabinet channel test, characterized in that: The invention comprises a positive pole (7) and a negative pole (5) slidably arranged on the positive pole (7), the ends of the positive pole (7) and the negative pole (5) both have connecting parts extending in the same direction, a positive contact (1) is installed on the connecting part of the positive pole (7), a negative contact (3) is installed on the connecting part of the negative pole (5), and interface wires (8) are arranged inside the positive pole (7) and the negative pole (5).

2. The auxiliary device for instrumentation and control cabinet channel test according to claim 1 is characterized in that: One end of the interface line (8) is arranged at the connecting portion, and the other end passes through and extends from the ends of the positive pole (7) and the negative pole (5).

3. The auxiliary device for instrumentation and control cabinet channel test according to claim 1 is characterized in that: An instrument control signal test clip is installed at the other end of the interface line (8).

4. The auxiliary device for instrumentation and control cabinet channel test according to claim 1 is characterized in that: The positive pole (7) and the negative pole (5) are slidably connected via an engaging guide rail (9).

5. The auxiliary device for instrumentation and control cabinet channel test according to claim 1 or 4, characterized in that: The front side of the positive pole (7) is provided with a long groove, a movable guide rail is installed in the long groove, and a row of teeth is installed on the negative pole (5), and the row of teeth is adapted to the movable guide rail.

6. The auxiliary device for instrumentation and control cabinet channel test according to claim 1 is characterized in that: The positive contact (1) and the negative contact (3) are provided with internal threads, and the connecting portion is provided with external threads matching the internal threads.

7. The auxiliary device for instrumentation and control cabinet channel test according to claim 1 is characterized in that: An LED indicator light (2) is provided on the front of the positive pole (7), and an LED light switch is installed on the back of the negative pole (7).

8. The auxiliary device for instrumentation and control cabinet channel test according to claim 1 is characterized in that: The positive contact (1) and the negative contact (3) adopt a hollow copper structure.

9. The auxiliary device for instrumentation and control cabinet channel test according to claim 1, characterized in that: The negative pole (5) is provided with a power assist stopper (4).

10. A method for using an auxiliary device for instrumentation and control cabinet channel testing, characterized in that: include: Step 1: Check whether the parts of the auxiliary device are available; Step 2: determining whether to turn on the LED lighting lamp (2) based on environmental conditions, and if the light is poor, turning on the LED lighting lamp (2) through the LED lighting switch (6); Step 3: Select a contact of appropriate size according to the terminal aperture determined in step 2, then remove the pre-installed positive contact (1) and negative contact (3), and install the positive and negative contacts suitable for this channel test; Step 4: According to the positive and negative pole spacing of the terminal determined in step 2, the distance between the positive and negative contacts is changed by pushing and pulling the back-pull assist stopper (4) until it matches the terminal to be tested; Step 5: Insert the positive and negative contacts of the auxiliary device into the terminals, and confirm that the connection is tight and not loose; Step 6: Connect the channel test device to the auxiliary device via an interface line (8); Step 7: Start the channel test equipment and begin the channel test.

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