Three-phase resistance measuring device with stable installation function

Abstract

The utility model provides a three-phase resistance measuring device with a stable installation function, which relates to the technical field of three-phase resistance measurement, and comprises an installation mechanism, the installation mechanism comprises a base, the base is provided with a side frame, the side frame is provided with a bolt, the base is provided with an adjusting block, one end of the adjusting block is provided with a butt joint block, and the butt joint block is provided with a bolt. Connecting plates are arranged on the two sides of the adjusting block and the two sides of the butt joint block correspondingly, and a mounting base is arranged at one end of the butt joint block. According to the utility model, the resistor is placed on the test equipment on the mounting seat, then a worker can fix the resistor by penetrating the bolt through the side frame in a threaded rotation manner, then the worker can adjust the adjusting block and the butt joint block and then limit the resistor through the connecting plate; and after adjustment is completed, a worker can buckle and limit the base and the mounting base through an ejector rod and a spring, so that the stability of the device in the actual use process is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to three -phase resistance measurement technical field especially relates to a three -phase resistance measurement device with stable installation function. BACKGROUND

[0002] Three -phase resistance measurement device is used for measuring the special equipment of three -phase resistance in power system, and is widely used in power engineering and equipment maintenance. Its measurement result directly influences the operation efficiency and safety of power equipment. Therefore, ensure that the measurement device is stably installed, and then improve the measurement precision and reliability, it is an important demand in the power industry.

[0003] However, the three -phase resistance measurement device in the prior art often faces some challenges in the use process. First, the design of the fixing device is usually simple, and it is difficult to provide sufficient stability in various environments, which may cause shaking during the measurement process and affect the accuracy of the measurement results. Secondly, the installation steps are complicated, and the adjustment is inconvenient, which increases the preparation time and operation difficulty. In addition, the fixing effect is not good, and displacement is easy to occur during measurement, which further affects the stability of the system and the accuracy of the measurement. Therefore, we provide a three -phase resistance measurement device with stable installation function. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art, and provides a three -phase resistance measurement device with stable installation function.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: a three -phase resistance measurement device with stable installation function, comprising: installation mechanism, the installation mechanism includes base, the base is provided with side frame, the side frame is provided with bolt, the base is provided with adjusting block, one end of the adjusting block is provided with butt joint block, the both sides of the adjusting block and butt joint block are provided with connecting plate, one end of the butt joint block is provided with mounting seat, the mounting seat is provided with test equipment, the base and mounting seat are provided with supporting mechanism between them;

[0006] Supporting mechanism, including limiting frame, the limiting frame is provided with spring, the both ends of the spring are provided with top rod.

[0007] As a preferred embodiment, one end of the base and the mounting seat is provided with buckle mechanism, the buckle mechanism includes butt joint frame, the butt joint frame is provided with spring leaf, the both ends of the spring leaf are provided with buckle plate.

[0008] As a preferred embodiment, the both ends of the spring leaf are respectively butt jointed between two buckle plates, the outer surfaces of the buckle plate and spring leaf are nested in the butt joint frame.

[0009] As a preferred implementation, one end of the side frame is fixedly connected to the base, and the bolt is installed through the side frame by threaded rotation.

[0010] As a preferred implementation, one end of the adjusting block is butted to the base, one end of the butting block and the adjusting block is respectively butted to the connecting plate, and the end of the butting block away from the connecting plate is butted to the mounting seat.

[0011] As a preferred implementation, the test device is installed on the mounting seat, the two ends of the spring are fixed between the two jacks, the end of the jack away from the spring is respectively butted to the base and the mounting seat, and the outer surfaces of the jack and the spring are nested in the limiting frame.

[0012] Compared with the prior art, the utility model has the advantages and positive effects that:

[0013] 1、 the utility model discloses a three -phase resistance measuring device with stable installation function, which comprises a base, a mounting seat, a test device, a spring, a jack and a limiting frame.

[0014] 2、 the utility model discloses a three -phase resistance measuring device with stable installation function, which comprises a base, a mounting seat, a test device, a spring, a jack and a limiting frame. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A structure schematic view of the three -phase resistance measuring device with stable installation function is provided for the utility model.

[0016] Figure 2 A structure exploded view of the three -phase resistance measuring device with stable installation function is provided for the utility model.

[0017] Figure 3 A mounting mechanism and support mechanism structure schematic view of the three -phase resistance measuring device with stable installation function is provided for the utility model.

[0018] Figure 4 A buckle mechanism structure schematic view of the three -phase resistance measuring device with stable installation function is provided for the utility model.

[0019] LEGEND:

[0020] 1, installation mechanism; 11, base; 12, side frame; 13, bolt; 14, adjusting block; 15, connecting plate; 16, butt block; 17, mounting seat; 18, test equipment;

[0021] 2, support mechanism; 21, limiting frame; 22, ejector rod; 23, spring;

[0022] 3, buckle mechanism; 31, butt frame; 32, buckle plate; 33, elastic sheet. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail in conjunction with the accompanying drawings.

[0024] It should be noted that in the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0025] In addition, in the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0026] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. However, it is noted that direct connection means that the connection between the two main bodies does not form a connection relationship through an excessive structure, but is connected only through the connecting structure to form a whole. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Embodiment

[0028] As shown in Figures 1-3 The utility model provides a technical scheme: a three -phase resistance measuring device with stable installation function, include: installation mechanism 1, installation mechanism 1 includes base 11, be provided with side frame 12 on base 11, be provided with bolt 13 on side frame 12, be provided with adjusting block 14 on base 11, the one end of adjusting block 14 is provided with docking block 16, adjusting block 14 and the both sides of docking block 16 are provided with connecting plate 15, the one end of docking block 16 is provided with mounting seat 17, be provided with test equipment 18 on mounting seat 17, be provided with support mechanism 2 between base 11 and mounting seat 17,

[0029] Support mechanism 2, including limiting frame 21, be provided with spring 23 in limiting frame 21, the both ends of spring 23 are provided with top rod 22,

[0030] The one end of side frame 12 is fixedly connected on base 11, and bolt 13 is installed through the threaded rotation mode through side frame 12, the one end of adjusting block 14 is docked on base 11, the one end of docking block 16 and adjusting block 14 is respectively docked on connecting plate 15, the one end of docking block 16 away from connecting plate 15 is docked on mounting seat 17, test equipment 18 is installed on mounting seat 17, the both ends of spring 23 are fixed between two top rods 22, the one end of top rod 22 away from spring 23 is respectively docked on base 11 and mounting seat 17, and the outer surfaces of top rod 22 and spring 23 are nested in limiting frame 21.

[0031] In this embodiment, when the staff uses this detection device to measure the three-phase resistance, the staff can place the resistor on the test equipment 18 on the mounting seat 17, and then the staff can fix the bolt 13 by threading it through the side frame 12, and then the staff can adjust the adjustment block 14 and the docking block 16, and then limit them through the connecting plate 15. After the adjustment is completed, the staff can use the top rod 22 and the spring 23 to clip and limit the base 11 and the mounting seat 17, so that its stability during actual use is further improved.

[0032] This three-phase resistance measuring device mainly uses direct current to measure whether the three-phase resistance of the installed switch cabinet is balanced and whether the three-phase resistance is within the normal range, so as to find out whether the busbar on the main circuit of the switch cabinet and the main circuit of the circuit breaker are installed correctly and whether the main contact resistance of the circuit breaker is within the normal range.

[0033] The main circuit of the power distribution system is generally composed of the main contacts of the circuit breaker, the busbar and screws, and the resistance of the main circuit is composed of the busbar resistance, the main contact resistance of the circuit breaker and the busbar joint resistance.

[0034] Measured resistance = busbar resistance + circuit breaker main contact resistance + busbar joint resistance

[0035] Under normal circumstances: busbar resistance = ρ (L / S) unit Ω ρ = resistivity copper resistivity = 0.017

[0036] L = length of the line in m, S = cross section of the line in mm²

[0037] Circuit breaker main contact resistance = provided in the manufacturer's manual

[0038] Busbar resistance connector resistance = Maximum should not exceed 1 milliohm

[0039] Measuring principle:

[0040] From the circuit diagram we can see that:

[0041] Phase A resistance = Phase A standard resistance 1R + Phase A measured resistance 4R

[0042] Phase B resistance = Phase B standard resistance 2R + Phase B measured resistance 5R

[0043] C-phase resistance = C-phase standard resistance 3R + C-phase measured resistance 6R

[0044] The stable DC power supply is generated by the switching power supply 1, when the programmable controller controls 1KA to be closed, the positive power supply flows into the measured loop through three standard resistances, the programmable controller measures the voltage of C1, C2, C3 and C4 points at the same time, generates the voltage of VC1, VC2, VC3 and VC4 points, and sends them into the analog input points AD1, AD2, AD3 and AD4 of the programmable controller after being amplified by the integrated operational amplifiers F1, F2, F3 and F4, and the resistance of the three measured resistances can be calculated through the programmable calculation.

[0045] The amplification factor n=(20+1) / 1=21

[0046] IA=(VC1-VC2) / 1R IB=(VC1-VC3) / 2R IC=(VC1-VC4) / 3R

[0047] 4R=VC2 / IA / n

[0048] 5R=VC3 / IB / n

[0049] 6R=VC4 / IC / n

[0050] In this way, the programmable controller can measure the resistance value, and through manual comparison and calculation, it can be known whether the measured resistance is in the normal range.

[0051] The touch screen displays the calculated resistance data by collecting the programmable controller data. Embodiment

[0052] As shown in Figures 1-4 The base 11 and one end of the mounting seat 17 are provided with a buckle mechanism 3, the buckle mechanism 3 comprises a butt joint frame 31, the butt joint frame 31 is provided with a spring sheet 33, both ends of the spring sheet 33 are provided with a buckle plate 32, both ends of the spring sheet 33 are respectively butt jointed between the two buckle plates 32, and the outer surfaces of the buckle plate 32 and the spring sheet 33 are nested in the butt joint frame 31.

[0053] In the embodiment, in order to further improve the practicability in actual use, the buckle mechanism 3 is arranged at one end of the base 11 and the mounting seat 17 for buckling reinforcement, the staff can pull the buckle plate 32 to stretch the spring sheet 33, so that the buckle plate 32 is buckled and fixed on the base 11 and the mounting seat 17 for buckling fixation, thereby further improving the stability in actual use.

[0054] Working principle:

[0055] As shown in Figures 1-4As shown, when the detection device is used to measure the three-phase resistance, the operator first places the resistance on the test device 18 on the mounting seat 17. Next, the operator fixes the bolt 13 through the side frame 12 by screwing, so as to ensure that the resistance device is stably installed. Then, the operator can accurately adjust the adjusting block 14 and the butt block 16, and fix them by limiting the connecting plate 15, so as to ensure that the device is in a suitable position during the detection process.

[0056] After the adjustment is completed, the operator uses the top rod 22 and the spring 23 to buckle and limit the base 11 and the mounting seat 17. This design effectively improves the stability of the whole device, prevents the device from moving or loosening during the measurement process, and ensures the accuracy of the measurement result.

[0057] In order to further improve the practicability and stability of the device in actual use, an additional buckling mechanism 3 is arranged at one end of the base 11 and the mounting seat 17. The operator can pull the buckling plate 32, so that the spring piece 33 is stretched, thereby fixing the buckling plate 32 on the base 11 and the mounting seat 17, and realizing buckling fixation. In this way, the buckling mechanism can provide a more firm reinforcing effect for the device, ensure that the device is stable and does not move during the measurement process, further reduce the error and improve the measurement accuracy.

[0058] It should be understood by those skilled in the art that the above discussion of any embodiment is only exemplary and is not intended to imply that the scope (including claims) of the present application is limited to these examples; under the idea of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above. In order to be brief, they are not provided in details.

[0059] The present application is intended to cover all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Accordingly, any and all such alternatives, modifications and variations are intended to be included within the scope of the present application.

Claims

1. A three-phase resistance measuring device with a stable installation function, characterized in that: include: A mounting mechanism (1), the mounting mechanism (1) comprising a base (11), a side frame (12) being provided on the base (11), a bolt (13) being provided on the side frame (12), an adjusting block (14) being provided on the base (11), a docking block (16) being provided at one end of the adjusting block (14), connecting plates (15) being provided on both sides of the adjusting block (14) and the docking block (16), a mounting seat (17) being provided at one end of the docking block (16), a test device (18) being provided on the mounting seat (17), and a supporting mechanism (2) being provided between the base (11) and the mounting seat (17); The support mechanism (2) comprises a limit frame (21), a spring (23) is provided in the limit frame (21), and push rods (22) are provided at both ends of the spring (23).

2. A three-phase resistance measuring device with a stable installation function according to claim 1, characterized in that: A snap mechanism (3) is provided at one end of the base (11) and the mounting seat (17), the snap mechanism (3) comprising a docking frame (31), a spring piece (33) being provided in the docking frame (31), and snap plates (32) being provided at both ends of the spring piece (33).

3. The three-phase resistance measuring device with stable installation function according to claim 2, characterized in that: The two ends of the spring piece (33) are respectively butted between the two snap plates (32), and the outer surfaces of the snap plates (32) and the spring piece (33) are nested in the butt joint frame (31).

4. The three-phase resistance measuring device with stable installation function according to claim 1, characterized in that: One end of the side frame (12) is fixedly connected to the base (11), and the bolt (13) is installed by passing through the side frame (12) through threaded rotation.

5. The three-phase resistance measuring device with stable installation function according to claim 1, characterized in that: One end of the adjustment block (14) is docked on the base (11), one end of the docking block (16) and the adjustment block (14) are docked on the connecting plate (15) respectively, and one end of the docking block (16) away from the connecting plate (15) is docked on the mounting seat (17).

6. The three-phase resistance measuring device with stable installation function according to claim 1, characterized in that: The test device (18) is mounted on the mounting seat (17), the two ends of the spring (23) are fixed between the two push rods (22), the end of the push rod (22) away from the spring (23) is docked on the base (11) and the mounting seat (17), respectively, and the outer surfaces of the push rod (22) and the spring (23) are nested in the limit frame (21).

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