CN204556733U - A kind of pole tower ground resistance measurement mechanism not dismantling ground wire - Google Patents
A kind of pole tower ground resistance measurement mechanism not dismantling ground wire Download PDFInfo
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- CN204556733U CN204556733U CN201520070958.8U CN201520070958U CN204556733U CN 204556733 U CN204556733 U CN 204556733U CN 201520070958 U CN201520070958 U CN 201520070958U CN 204556733 U CN204556733 U CN 204556733U
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Abstract
The utility model discloses a kind of pole tower ground resistance measurement mechanism not dismantling ground wire, comprise earth resistance tester main frame, it is characterized in that, also comprise the multiplex roles connector be connected with the voltage socket of earth resistance tester main frame, described multiplex roles connector is connected with several voltage jaws, the quantity of described voltage jaw is equal to or greater than the radical of the ground wire of shaft tower to be measured, and the current sockets of described earth resistance tester main frame is connected with electric current jaw.No matter tower grounding line has how many can measure pole tower ground resistance, and every root ground wire does not need to disconnect, and overcome prior art Problems existing, and structure is simple, easy to operate, not high to user of service's level requirement.
Description
Technical field
The utility model relates to a kind of pole tower ground resistance measurement mechanism not dismantling ground wire, and when especially having many ground wires for tested shaft tower, measuring process does not dismantle the measurement mechanism of ground wire.
Background technology
At present two jaw ground resistance tester precision are on the market high, antijamming capability is strong, be simple to operately easy to carry about with one, digital processing capabilities is powerful, ground loop resistance can be detected when not power-off, avoiding in classic method needs at substantial engineering to lay auxiliary earth polar, needs to disconnect grounding body and the shortcoming such as electrical equipment is connected, both the requirement of the work of electric power system of needs not power-off has now been adapted to, in turn save a lot of manpower and materials, there is larger practical value.
But sometimes surveyed a shaft tower often more than ground wire, when running into many ground wires, require that the earthing device of tested shaft tower all ground wires except tested ground wire all disconnect with shaft tower when using two jaw ground resistance tester to measure, and it is in parallel with tested ground wire, the stake resistance of earthing device is measured as a whole, namely only retains a ground wire and is connected with shaft tower.At this moment the advantage (namely not needing to disconnect ground wire) of two jaw ground resistance tester is just difficult to embody, moreover sometimes the ground wire of shaft tower is also do not allow to disconnect or be difficult to disconnecting, and at this moment common two jaw ground resistance testers just cannot measure pole tower ground resistance.
Therefore be badly in need of a kind of when all ground wires do not disconnect at present, the measurement mechanism of grounding resistance can be measured.
Utility model content
For the problems referred to above, the utility model provides a kind of pole tower ground resistance measurement mechanism not dismantling ground wire, and no matter tower grounding line has how many can measure pole tower ground resistance, and every root ground wire does not need to disconnect, not high to user of service's level requirement, easy to operate.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the utility model is achieved through the following technical solutions:
A kind of pole tower ground resistance measurement mechanism not dismantling ground wire, comprise earth resistance tester main frame, it is characterized in that, also comprise the multiplex roles connector be connected with the voltage socket of earth resistance tester main frame, described multiplex roles connector is connected with several voltage jaws, the quantity of described voltage jaw is equal to or greater than the radical of the ground wire of shaft tower to be measured, and the current sockets of described earth resistance tester main frame is connected with electric current jaw.
Preferably, the lower wire of the upper conductor that the connects all voltage jaw upper ends ground wires ground wire all with being connected electric current jaw lower end is also comprised.
The beneficial effects of the utility model are:
No matter tower grounding line has how many can measure pole tower ground resistance, and every root ground wire does not need to disconnect, and largely overcome prior art Problems existing, and structure is simple, easy to operate, not high to user of service's level requirement.
Accompanying drawing explanation
Fig. 1 is the pole tower ground resistance measuring principle equivalent circuit diagram that the utility model does not dismantle ground wire;
Fig. 2 is a kind of structural representation not dismantling the pole tower ground resistance measurement mechanism of ground wire of the utility model;
Fig. 3 be the utility model for measuring time schematic diagram;
Fig. 4 is the enlarged drawing of left part in Fig. 3;
The mark implication of accompanying drawing is as follows:
1: earth resistance tester main frame; 2: voltage jaw; 3: electric current jaw; 4: multiplex roles connector; 5: upper conductor; 6: lower wire; 7: stake resistance; 8: ground wire; 9: equivalent voltage source; 10: electric current jaw electric current to be measured.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, technical solutions of the utility model are described in further detail, the quantity of wherein getting ground wire is 2 and is described, to make those skilled in the art better can understand the utility model being implemented, but illustrated embodiment is not as to restriction of the present utility model.
Do not dismantle a pole tower ground resistance measurement mechanism for ground wire, Fig. 1 is that hypothesis has pole tower ground resistance during two ground wires 8 to measure equivalent circuit diagram, and in the entire network, survey stake resistance 7, if its resistance is R, other each grounding resistor coupled in parallel values are R
0=R
1//R
2//R
3// ... //R
n, when n is larger, R
0< < R.When shaft tower quantity in parallel on lightning conducter in surveyed track section meets table 1, just split-core type meter measurement of Grounding Resistance 7 can be used.
Table 1
| Stake resistance (Ω) | Shaft tower quantity (base) | Stake resistance (Ω) | Shaft tower quantity (base) |
| 0＜R≤1 | ≥4 | 10＜R≤15 | ≥10 |
| 1＜R≤2 | ≥5 | 15＜R≤17 | ≥11 |
| 2＜R≤4 | ≥6 | 17＜R≤24 | ≥12 |
| 4＜R≤5 | ≥7 | 24＜R≤30 | ≥13 |
| 5＜R≤7 | ≥8 | 30＜R≤40 | ≥15 |
| 7＜R≤10 | ≥9 | 40＜R≤50 | ≥16 |
Pole tower ground resistance 7 measuring principle not dismantling ground wire 8 is powered to multiple voltage jaw 2 by same power supply, the equivalent voltage source 9 that each voltage jaw 2 is acted on every root ground wire 8 is completely equal, be expressed as U, two complete equal voltage sources are in parallel, and its total voltage is constant.The electric current jaw electric current to be measured 10 of the electric current in each equivalent voltage source 9 and Fig. 1 must be equal, be expressed as I, so electric current jaw 3 no matter to be clipped in stake resistance 7 numerical value that main frame on which root ground wire 8 measures all equal, all electric currents are added up the current value equaling to flow through in stake resistance 7.If there is n root ground wire 8, the electric current flowing through each equivalent voltage source 9 is n/mono-flowing through stake resistance 7 electric current, therefore the current value R that measures of main frame
*=U/I, actual stake resistance R=R
*/ n=U/ (nI).
As shown in Figure 2, a kind of pole tower ground resistance measurement mechanism not dismantling ground wire, comprises earth resistance tester main frame 1, it is at least provided with a current sockets and voltage socket, wherein, voltage socket is connected with multiplex roles connector 4, and current sockets is connected with electric current jaw 3.Multiplex roles connector 4 plays the effect of expanding interface, and its interface quantity can be arranged according to practical measurement requirement, or, can by the cascade of multiple multiplex roles connector 4 to meet the quantitative requirement of interface.
Multiplex roles connector 4 is connected with several voltage jaws 2, the quantity of described voltage jaw 2 is equal to or greater than the radical of the ground wire 8 of shaft tower to be measured, preferably, described voltage jaw 2 is removably arranged on multiplex roles connector 4, during measurement, the quantity of voltage jaw 2 equals the radical of ground wire 8.When earth resistance tester main frame 1 comprises multiple voltage socket, if the voltage source of voltage socket is identical, then voltage jaw 2 directly can be connected with voltage socket.
In order to avoid each ground wire 8 internal resistance on the impact of electric current in equivalent voltage source 9 as far as possible, preferably, measurement mechanism also comprises upper conductor 5 and lower wire 6, wherein, upper conductor 5 is for connecting the ground wire 8 of all voltage jaw 2 upper ends, lower wire 6 is for connecting all ground wires 8 in electric current jaw 3 lower end, and the below place that namely all ground wires 8 are positioned at electric current jaw 3 is connected by lower wire 6.
As shown in Figure 3 and Figure 4, a kind of pole tower ground resistance measurement method not dismantling ground wire, comprises the steps:
S01: the voltage jaw 2 selecting equal number according to the radical of ground wire 8, is clipped on every root ground wire 8 respectively;
S02: certain distance bottom distance voltage jaw 2, is clipped on any ground wire 8 by electric current jaw 3;
S03: open earth resistance tester main frame 1, reads the resistance value that main frame shows;
S04: with the radical of the resistance value that main frame shows divided by ground wire 8, the stake resistance 7 namely obtaining finally will measuring is worth.
Preferably, between step S02 and step S03, also comprise the steps: the ground wire 8 connecting all voltage jaw 2 upper ends with upper conductor 5, lower wire 6 connects all ground wires 8 in electric current jaw 3 lower end.
Accordingly, when ground wire 8 quantity reaches certain numerical value, by the cascade of multiple multiplex roles connector 4, each voltage jaw 2 is connected with the voltage socket of earth resistance tester main frame 1.
The beneficial effects of the utility model are: no matter tower grounding line 8 has how many can measure pole tower ground resistance 7, and every root ground wire 8 does not need to disconnect, largely overcome prior art Problems existing, and structure is simple, easy to operate, not high to user of service's level requirement.Existing earth resistance tester basis is reequiped, and repacking cost is low, has good market outlook.
These are only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model instructions and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in the technical field that other are relevant, be all in like manner included in scope of patent protection of the present utility model.
Claims (3)
1. do not dismantle the pole tower ground resistance measurement mechanism of ground wire for one kind, comprise earth resistance tester main frame (1), it is characterized in that, also comprise the multiplex roles connector (4) be connected with the voltage socket of earth resistance tester main frame (1), described multiplex roles connector (4) is connected with several voltage jaws (2), the quantity of described voltage jaw (2) is equal to or greater than the radical of the ground wire (8) of shaft tower to be measured, and the current sockets of described earth resistance tester main frame (1) is connected with electric current jaw (3).
2. a kind of pole tower ground resistance measurement mechanism not dismantling ground wire according to claim 1, it is characterized in that, also comprising the lower wire (6) of the upper conductor (5) that connects the upper terminate ground wire (8) of all voltage jaws (2) ground wire (8) all with being connected electric current jaw (3) lower end.
3. a kind of pole tower ground resistance measurement mechanism not dismantling ground wire according to claim 1, is characterized in that, described voltage jaw (2) is removably arranged on multiplex roles connector (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520070958.8U CN204556733U (en) | 2015-01-30 | 2015-01-30 | A kind of pole tower ground resistance measurement mechanism not dismantling ground wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520070958.8U CN204556733U (en) | 2015-01-30 | 2015-01-30 | A kind of pole tower ground resistance measurement mechanism not dismantling ground wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204556733U true CN204556733U (en) | 2015-08-12 |
Family
ID=53831827
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520070958.8U Expired - Fee Related CN204556733U (en) | 2015-01-30 | 2015-01-30 | A kind of pole tower ground resistance measurement mechanism not dismantling ground wire |
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| Country | Link |
|---|---|
| CN (1) | CN204556733U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490307A (en) * | 2018-07-06 | 2018-09-04 | 广东电网有限责任公司 | Grounding integrated device and grounding detection system |
| CN109991517A (en) * | 2019-04-16 | 2019-07-09 | 华能山东石岛湾核电有限公司 | For judging the structure and its test method of position of failure point |
| CN112415235A (en) * | 2020-11-16 | 2021-02-26 | 贵州电网有限责任公司 | Portable novel grounding resistance measuring terminal and measuring method thereof |
-
2015
- 2015-01-30 CN CN201520070958.8U patent/CN204556733U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490307A (en) * | 2018-07-06 | 2018-09-04 | 广东电网有限责任公司 | Grounding integrated device and grounding detection system |
| CN109991517A (en) * | 2019-04-16 | 2019-07-09 | 华能山东石岛湾核电有限公司 | For judging the structure and its test method of position of failure point |
| CN109991517B (en) * | 2019-04-16 | 2024-05-03 | 华能山东石岛湾核电有限公司 | Structure for judging fault point position and test method thereof |
| CN112415235A (en) * | 2020-11-16 | 2021-02-26 | 贵州电网有限责任公司 | Portable novel grounding resistance measuring terminal and measuring method thereof |
| CN112415235B (en) * | 2020-11-16 | 2022-09-23 | 贵州电网有限责任公司 | Portable novel grounding resistance measuring terminal and measuring method thereof |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 Termination date: 20180130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |