Novel multifunctional direct current test transmission instrument
By fixing the output line connector with a limiting plate and locking plate structure, and combining the design of internal and external heat dissipation pipes, the problems of loose connectors and dust entry during the DC test instrument testing process are solved, achieving stable resistance and heat dissipation effect of components.
Patent Information
- Application Number
- CN202511094004.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-06
- Publication Date
- 2025-11-18
AI Technical Summary
Existing DC test instruments experience output line vibration during testing, which can lead to loose connections, unstable resistance, and potentially cause high-temperature damage to the equipment. Furthermore, dust can easily enter during heat dissipation, affecting the lifespan of components.
The output line connector is fixed by a limiting plate and a locking plate structure. Combined with the design of internal and external heat dissipation pipes, heat dissipation without external wall openings is achieved through the air flow of the internal and external heat dissipation pipes.
This prevents loose connections at the output interface, maintains stable resistance, prevents high-temperature damage to the equipment, and prevents dust from entering, thus extending the lifespan of components.
Smart Images
Figure CN120971845A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of power grid operation and maintenance auxiliary equipment, and particularly relates to a novel multifunctional DC test instrument. BACKGROUND
[0002] In the power system, the DC power supply system occupies a pivotal position, which provides stable and reliable DC power for the control, signal, protection, automatic device and emergency lighting of the substation and other key loads, is one of the core links to ensure the safe and stable operation of the power system, and is an important task in the operation and maintenance of the power system to regularly detect and maintain the DC system and related equipment, timely find and eliminate potential safety hazards, and ensure that the performance indicators of the DC system meet the requirements. The DC test instrument is a tool specially used for detecting the performance and equipment state of the DC system, and is of great significance to improve the reliability and stability of the operation of the DC system.
[0003] At present, when connecting the high-voltage output line, the DC test instrument is usually directly inserted into the socket on the test instrument through the plug, but in the detection process, the output line may be shaken by personnel touching, and the output line is also easy to shake when the wind is strong, so the joint position is easy to loosen, which affects the stability of the resistance during detection, and the unstable resistance may also cause high-temperature damage to the equipment, and the test instrument also generates a lot of heat after a long time of detection. At present, the heat dissipation is directly opened on the side of the test instrument, and dust is easy to enter the inside and cover the internal components during heat dissipation, which affects the heat dissipation and service life. SUMMARY
[0004] The present application provides a novel multifunctional DC test instrument, which can avoid the loosening of the joint at the output interface due to the shaking of the power transmission line, the resistance is more stable during detection, and the high-temperature damage to the equipment is avoided, and the dust entering the inside of the test instrument and covering the internal components during heat dissipation is avoided, so as to ensure the heat dissipation effect and service life of the internal components.
[0005] The application provides a novel multifunctional direct-current test instrument.
[0006] The limiting plates are U-shaped plates, the limiting plates can slide up and down in the U-shaped grooves in the inner side of the top of the test instrument, and the springs at the bottom of the limiting plates can push the limiting plates to slide upward.
[0007] When the output line connector is pressed downward, the limiting plates can slide downward to the bottom, when the connector locking plate is away from the output line connector, the limiting plates slide upward, and at this time, one side of the two limiting plates can tightly push one side of the connector locking plate.
[0008] The locking plate support columns are cylindrical rods, each of the connector locking plates is provided with a circular hole with an inner diameter equal to the outer diameter of the locking plate support column, and the springs outside the locking plate support columns can push the connector locking plates to slide toward the high-voltage output interface.
[0009] The five circular holes in the inner side of the outer heat dissipation pipes and the right outer wall of the test instrument box are in communication with the cavities in the inner side of the outer heat dissipation pipes, the inner heat dissipation pipes are U-shaped pipes, and the lower parts of the inner heat dissipation pipes are located in the cavities in the inner side of the outer heat dissipation pipes.
[0010] The top of the test instrument is also provided with two groups of four strip-shaped protrusions, the width of the gap between the strip-shaped protrusions in each group is equal to the width of the connector locking plate, the bottom surface of the connector locking plate is tightly attached to the top surface of the test instrument and can slide in the gap between the two groups of strip-shaped protrusions.
[0011] Air in the outer heat dissipation pipes flows from left to right, the top right side of the inner heat dissipation pipe is connected to the air outlet of the heat dissipation fan in the inner side of the test instrument, and air in the inner heat dissipation pipe flows from right to left.
[0012] The outer side of the output line connector is provided with an annular groove, the top side of the connector locking plate is provided with a semicircular plate, and after the output line connector is inserted into the high-voltage output interface, the semicircular plate on the top side of the connector locking plate is embedded into the annular groove on the outer side of the output line connector and tightly contacts with the inner wall of the annular groove.
[0013] The application provides a novel multifunctional direct current test instrument, which has the following beneficial effects: The test instrument in the application is inserted into the high-voltage output interface in cooperation with the output line connector when being connected with the high-voltage output line, and the connector locking plate is also slid towards the high-voltage output interface and tightly locks the output line connector when the output line connector is inserted, so that the loosening of the connector at the output interface caused by the shaking of the power transmission line can be avoided, the resistance is more stable during the detection process, and the high-temperature damage of the equipment can be avoided.
[0014] In addition, the test instrument does not need to be opened on the outer wall during heat dissipation, and heat exchange can be realized only by cooperating with the inner heat dissipation pipe and the outer heat dissipation pipe which are in communication with the inner cavity, so that the cavity in the test instrument is not in communication with the outside during the heat exchange process, and thus the dust can be prevented from entering the inside of the test instrument and covering the internal components, so that the heat dissipation effect and service life of the internal components are ensured. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings of the embodiments will be briefly introduced below.
[0016] The drawings described in the following description only relate to some embodiments of the application, rather than limiting the application.
[0017] In the drawings: Figure 1 The main shaft side schematic view of the output line connector after installation in the application is shown; Figure 2 The main shaft side schematic view of the overall structure of the application is shown; Figure 3 The partial shaft side schematic view of the output line connector during installation in the application is shown; Figure 4 The shaft side schematic view of the test instrument after installation of the output line connector is shown; Figure 5 The shaft side schematic view of the test instrument after cutting is shown; Figure 6 The main shaft side schematic view of the test instrument box after cutting is shown; Figure 7 The structure schematic view of the inner partition plate and the outer heat dissipation pipe is shown; Figure 8 The structure schematic view of the outer heat dissipation pipe after cutting is shown; List of reference signs 1, test instrument box; 2, test instrument; 3, touch screen; 4, high-voltage output interface; 5, locking plate support column; 6, joint locking plate; 7, spring; 8, limiting plate; 9, output line joint; 10, cooling fan; 11, inner partition plate; 12, outer cooling pipe; 13, inner cooling pipe. DETAILED DESCRIPTION
[0018] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without any inventive effort fall within the scope of protection of the present application.
[0019] Embodiment one: please refer to Figures 1 to 8 : The utility model provides a new type multifunctional direct current test sender, include: test sender box 1, the inside fixed test sender 2 of test sender box 1 top, test sender 2 top is provided with touch -control screen 3, high -voltage output interface 4, ground socket, power socket, pilot lamp and voltage adjusting knob, test sender box 1 is used to the wrapping protection of test sender 2, test sender 2 is used for detecting direct current system, when detecting, can insert power cord into the power socket of test sender 2 top and power on the device, and the ground socket is connected with ground through the ground wire, then the output wire joint 9 is inserted into high -voltage output interface 4, also can adjust voltage through voltage adjusting knob, operate through touch -control screen 3, observe whether the performance is eligible through pilot lamp, two locking plate support columns 5 are also fixed to the front and back of high -voltage output interface 4 symmetrically, one piece of joint locking plate 6 is slidably installed on the outside of two locking plate support columns 5, a spring 7 is also installed on the outside of two locking plate support columns 5, and high -voltage output interface 4 and output wire joint 9 can be connected with high -voltage output wire and test sender 2, when output wire joint 9 is inserted into high -voltage output interface 4, the spring 7 on the outside of locking plate support column 5 will push joint locking plate 6 to slide towards high -voltage output interface 4, then the half ring plate on the top of joint locking plate 6 will be embedded in the annular groove on the outside of output wire joint 9, so that the output wire joint 9 can be locked firmly by joint locking plate 6, to avoid the joint at the output interface 4 from loosening due to the shaking of power transmission line, a limiting plate 8 is also slidably installed on the front and back of high -voltage output interface 4, and two springs 7 are also arranged on the bottom of limiting plate 8, when output wire joint 9 is inserted into high -voltage output interface 4, the bottom surface of output wire joint 9 will first contact with the top of limiting plate 8 and push it to slide downwards, so that the limiting plate 8 can be completely slid into the U-shaped groove on the inside of test sender 2, at this time, the limiting plate 8 will not resist joint locking plate 6, so as to unlock joint locking plate 6, when the device is used, the output wire joint 9 can be pulled out, the joint locking plate 6 can be pushed towards the side away from high -voltage output interface 4, when the bottom outer wall of joint locking plate 6 is separated from the top outer wall of limiting plate 8, the high -voltage output interface 4 can be pulled out, and the spring 7 at the bottom of limiting plate 8 also pushes limiting plate 8 to slide upwards to the top, at this time, the side of limiting plate 8 will press joint locking plate 6 tightly, so as to limit joint locking plate 6, output wire joint 9 is inserted into high -voltage output interface 4, and high -voltage output interface 4 and output wire joint 9 can be connected with high -voltage output wire and test sender 2, a cooling fan 10 is installed on the left bottom of test sender box 1, and the cooling fan 10 can be connected with the power socket in test sender 2 during production, so that the cooling fan 10 can be powered after the power cord is inserted, and the cooling fan 10 can blow air into the cavity on the left of inner partition 11 when working.The left side of the cavity in the bottom of the test instrument box 1 is fixed with an inner partition plate 11, and five outer heat dissipation pipes 12 are fixed equidistantly between the right side of the inner partition plate 11 and the right inner wall of the test instrument box 1, and an inner heat dissipation pipe 13 is fixed to the inner side of each of the five outer heat dissipation pipes 12. When the heat dissipation fan in the test instrument 2 works, the hot air generated in the test instrument 2 will be sent into the inner heat dissipation pipe 13 and flow from right to left. At the same time, the heat dissipation fan 10 will first send the cool air outside into the cavity on the left side of the inner partition plate 11, and then the cool air will enter the outer heat dissipation pipe 12 through the round holes on the inner partition plate 11 and flow to the right. In this process, the air in the outer heat dissipation pipe 12 and the inner heat dissipation pipe 13 will exchange heat, so as to cool the air in the inner heat dissipation pipe 13. The cooled air will re-enter the test instrument 2 and circulate continuously, so as to dissipate heat for the test instrument 2.
[0020] In the embodiment, as shown in Figure 4 and Figure 5 , the limiting plates 8 are U-shaped plates, and the limiting plates 8 can slide up and down in the U-shaped grooves in the top of the test instrument 2. The springs 7 at the bottom of the limiting plates 8 can push the limiting plates 8 to slide upward. When the limiting plates 8 slide to the bottom, the joint locking plate 6 is unlocked. When the limiting plates 8 are pushed upward by the springs 7, the limiting plates 8 can limit the joint locking plate 6.
[0021] In the embodiment, as shown in Figures 3-5 , when the output line joint 9 is pressed downward, the limiting plates 8 can be pushed to slide to the bottom. When the joint locking plate 6 moves away from the output line joint 9, the limiting plates 8 slide upward, and one side of the two limiting plates 8 can press one side of the joint locking plate 6. When the output line joint 9 is inserted into the high-voltage output interface 4, the bottom surface of the output line joint 9 will first contact the top of the limiting plate 8 and push the limiting plate 8 to slide downward, so that the limiting plate 8 can completely slide into the U-shaped groove in the test instrument 2. At this time, the limiting plate 8 will not resist the joint locking plate 6, so as to unlock the joint locking plate 6. When the device is used, the output line joint 9 can be pulled out. When the joint locking plate 6 is pushed away from the high-voltage output interface 4, the bottom outer wall of the joint locking plate 6 can be separated from the top outer wall of the limiting plate 8, and the high-voltage output interface 4 can be pulled out. At the same time, the spring 7 at the bottom of the limiting plate 8 can push the limiting plate 8 to slide upward to the top. At this time, one side of the limiting plate 8 can press the joint locking plate 6, so as to limit the joint locking plate 6.
[0022] In the embodiment, as shown in Figures 3-5As shown, the locking plate support columns 5 are all cylindrical rods, and each of the joint locking plates 6 is provided with a circular hole with an inner diameter equal to the outer diameter of the locking plate support column 5, and the spring 7 outside the locking plate support column 5 can push the joint locking plate 6 to slide towards the high-voltage output interface 4, and the locking plate support column 5 and the circular hole on the joint locking plate 6 can guide the sliding of the joint locking plate 6, and when the output line joint 9 is inserted into the high-voltage output interface 4, the spring 7 outside the locking plate support column 5 will push the joint locking plate 6 to slide towards the high-voltage output interface 4, and then the half-ring plate on one side of the top of the joint locking plate 6 will be embedded in the annular groove outside the output line joint 9, so that the output line joint 9 can be tightly locked by the joint locking plate 6, avoiding the loosening of the joint at the output interface 4 due to the shaking of the power transmission line.
[0023] In the embodiment, as shown in the figure, Figures 6-8 As shown, five circular holes are arranged on the inner partition plate 11 and the right outer wall of the test instrument box body 1, and the circular holes are in communication with the inner cavity of the outer heat dissipation pipe 12, the inner heat dissipation pipes 13 are all U-shaped pipes, and the lower parts of the inner heat dissipation pipes 13 are located in the cavity inside the outer heat dissipation pipe 12, and when in use, the cooling fan 10 will first send the external cool air into the cavity on the left side of the inner partition plate 11, and then the cool air will enter the outer heat dissipation pipe 12 through the circular holes on the inner partition plate 11 and flow to the right, and in this process, the air in the outer heat dissipation pipe 12 and the inner heat dissipation pipe 13 will be heat-exchanged, so that the air in the inner heat dissipation pipe 13 can be cooled, and the cooled air will re-enter the test instrument 2 and circulate continuously, so that the test instrument 2 can be cooled.
[0024] In the embodiment, as shown in the figure, Figures 1-5 As shown, two groups of four strip-shaped protrusions are arranged on the top of the test instrument 2, and the width of the gap between each group of strip-shaped protrusions is equal to the width of the joint locking plate 6, the bottom surface of the joint locking plate 6 is tightly attached to the top surface of the test instrument 2 and can slide in the gap between the two groups of strip-shaped protrusions, and when the joint locking plate 6 slides left and right, the lower part of the joint locking plate 6 will also slide between the strip-shaped protrusions on the top of the test instrument 2, thereby improving the stability of the joint locking plate 6 when sliding.
[0025] In the embodiment, as shown in the figure, Figures 1-5 As shown, an annular groove is arranged on the outside of the output line joint 9, and a half-ring plate is arranged on one side of the top of the joint locking plate 6, and after the output line joint 9 is inserted into the high-voltage output interface 4, the half-ring plate on one side of the top of the joint locking plate 6 will be embedded in the annular groove outside the output line joint 9 and tightly attached to the inner wall of the annular groove, and when the output line joint 9 is inserted into the high-voltage output interface 4, the half-ring plate on one side of the top of the joint locking plate 6 will be embedded in the annular groove outside the output line joint 9, so that the output line joint 9 can be tightly locked by the joint locking plate 6, avoiding the loosening of the joint at the output interface 4 due to the shaking of the power transmission line, and the resistance is more stable during detection.
[0026] Example 2, based on Example 1, such as Figures 1-8 As shown, the air in the outer heat dissipation pipe 12 flows from left to right. The top right side of the inner heat dissipation pipe 13 is connected to the air outlet of the cooling fan inside the test delivery device 2. The air in the inner heat dissipation pipe 13 flows from right to left. When the cooling fan in the test delivery device 2 is working, it will send the hot air generated inside into the inner heat dissipation pipe 13 and let it flow from right to left. At the same time, the cooling fan 10 will first send the cool air from outside into the cavity on the left side of the inner partition 11. Then, this cool air will enter the outer heat dissipation pipe 12 through the round hole on the inner partition 11 and flow to the right. During this process, the air in the outer heat dissipation pipe 12 and the inner heat dissipation pipe 13 will exchange heat, thus cooling the air in the inner heat dissipation pipe 13. Moreover, because the air in the outer heat dissipation pipe 12 and the inner heat dissipation pipe 13 flows in opposite directions, the air about to enter the test delivery device 2 will come into contact with cooler air, thereby improving the heat exchange effect.
[0027] The working principle of the embodiment: when it is needed to use the device to detect the direct current system, first, open the box cover on the top of the test instrument box 1, then insert the power cord into the power socket on the top of the test instrument 2 to power on the device, at the same time, the cooling fan 10 will also be powered on and run, and the grounding socket is connected to the ground through the grounding wire, then insert the output wire connector 9 into the high-voltage output interface 4, in this process, the bottom surface of the output wire connector 9 will first contact the top of the limiting plate 8 and push it to slide down, so that the limiting plate 8 can be completely slid into the U-shaped groove inside the test instrument 2, at this time, the limiting plate 8 will not resist the joint locking plate 6, so the spring 7 outside the locking plate support column 5 will push the joint locking plate 6 to slide towards the high-voltage output interface 4, then the half-ring plate on the top of the joint locking plate 6 will be embedded into the annular groove outside the output wire connector 9, so that the output wire connector 9 can be locked tightly by the joint locking plate 6, avoiding the joint at the output interface 4 from loosening due to the shaking of the power line, the resistance is more stable during detection, then connect the detection line at the other end of the output wire connector 9 to the circuit to be detected, in this way, the performance of the direct current system can be detected through the test instrument 2, during detection, the voltage can be adjusted through the voltage adjusting knob, the performance can be observed through the touch screen 3, and the cooling fan in the test instrument 2 will also be turned on during the detection process, when the cooling fan in the test instrument 2 works, it will send the hot air generated inside into the inner heat dissipation pipe 13 and flow from right to left, at the same time, the cooling fan 10 will first send the cool air outside into the cavity on the left side of the inner partition plate 11, then the cool air will enter the outer heat dissipation pipe 12 through the round holes on the inner partition plate 11 and flow to the right, in this process, the air in the outer heat dissipation pipe 12 and the inner heat dissipation pipe 13 will be exchanged, so that the air in the inner heat dissipation pipe 13 can be cooled, in this way, the cooled air will re-enter the test instrument 2 and circulate continuously, so that the test instrument 2 can be cooled, and because the air flow directions in the outer heat dissipation pipe 12 and the inner heat dissipation pipe 13 are opposite, the air about to enter the test instrument 2 will contact the cool air with lower temperature, so that the heat exchange effect can be improved, when the device is used, the output wire connector 9 can be pulled out, first, push the joint locking plate 6 to the side away from the high-voltage output interface 4, when the bottom outer wall of the joint locking plate 6 is separated from the top outer wall of the limiting plate 8, the high-voltage output interface 4 can be pulled out, at the same time, the spring 7 at the bottom of the limiting plate 8 will push the limiting plate 8 to slide up to the top, at this time, one side of the limiting plate 8 will press the joint locking plate 6 tightly, so that the joint locking plate 6 can be limited, finally, close the box cover on the top of the test instrument box 1 again to carry and store it.
[0028] In this article, the following points need to be noted: 1. The drawings of the embodiment only involve the structures involved in the embodiment, and other structures can refer to the usual design.
[0029] 2. The features of the embodiments and embodiments can be combined with each other in the case of no conflict to obtain new embodiments.
Claims
1. A novel multifunctional DC test instrument, comprising: Test delivery instrument housing (1); characterized in that: a test delivery instrument (2) is fixed on the inner top of the test delivery instrument housing (1), and the top of the test delivery instrument (2) is provided with a touch screen (3), a high voltage output interface (4), a grounding socket, a power socket, an indicator light and a voltage adjustment knob; two locking plate support columns (5) are symmetrically fixed on the front and rear sides of the high voltage output interface (4), and a connector locking plate (6) is slidably installed on the outer side of each of the two locking plate support columns (5), and a spring (7) is also installed on the outer side of each locking plate support column (5); the front and rear sides of the high voltage output interface (4) are also provided with A limiting plate (8) is slidably installed, and two springs (7) are also provided at the bottom of the limiting plate (8); an output line connector (9) is plugged into the top of the high voltage output interface (4); a cooling fan (10) is installed at the bottom left side of the test delivery instrument box (1); an inner partition (11) is fixed on the left side of the cavity inside the bottom of the test delivery instrument box (1), and five external heat dissipation pipes (12) are fixed at equal distances between the right side of the inner partition (11) and the right inner wall of the test delivery instrument box (1), and an inner heat dissipation pipe (13) is fixed inside each of the five external heat dissipation pipes (12).
2. The novel multifunctional DC test instrument according to claim 1, characterized in that, The locking plate support column (5) is a cylindrical rod. The connector locking plate (6) is provided with a circular hole with an inner diameter equal to the outer diameter of the locking plate support column (5). The spring (7) on the outside of the locking plate support column (5) can push the connector locking plate (6) to slide toward the high voltage output interface (4).
3. The novel multifunctional DC test instrument according to claim 1, characterized in that, The test delivery device (2) is also provided with two sets of four strip protrusions on the top, and the width of the groove between each set of strip protrusions is equal to the width of the connector locking plate (6). The bottom surface of the connector locking plate (6) is in close contact with the top surface of the test delivery device (2) and can slide in the groove between the two sets of strip protrusions.
4. A novel multifunctional DC test instrument according to claim 1, characterized in that, The output connector (9) has an annular groove on its outer side. The top side of the connector locking plate (6) is provided with a semi-annular plate. After the output connector (9) is inserted into the high voltage output interface (4), the semi-annular plate on the top side of the connector locking plate (6) will be embedded in the annular groove on the outer side of the output connector (9) and closely attached to the inner wall of the annular groove.
5. A novel multifunctional DC test instrument according to claim 1, characterized in that, The limiting plates (8) are all U-shaped plates. The limiting plates (8) can slide up and down in the U-shaped groove on the inner side of the top of the test delivery instrument (2), and the spring (7) at the bottom of the limiting plates (8) can push them to slide upward.
6. A novel multifunctional DC test instrument according to claim 1, characterized in that, When the output line connector (9) is pressed down, it can push the limiting plate (8) down to the bottom. When the connector locking plate (6) moves away from the output line connector (9), the limiting plate (8) will slide up, and at this time, one side of the two limiting plates (8) will press against one side of the connector locking plate (6).
7. A novel multifunctional DC test instrument according to claim 1, characterized in that, The inner partition (11) and the outer right side of the test delivery instrument box (1) are provided with five round holes that communicate with the inner cavity of the outer heat dissipation pipe (12). The inner heat dissipation pipes (13) are all U-shaped pipes, and the lower part of the inner heat dissipation pipes (13) is located in the cavity inside the outer heat dissipation pipe (12).
8. A novel multifunctional DC test instrument according to claim 1, characterized in that, The air in the outer heat dissipation pipe (12) flows from left to right, and the top right side of the inner heat dissipation pipe (13) is connected to the air outlet of the inner heat dissipation fan of the test delivery instrument (2), and the air in the inner heat dissipation pipe (13) flows from right to left.