CN204347209U - The artificial leakage tripping test unit in a low tension switch distant place, colliery - Google Patents
The artificial leakage tripping test unit in a low tension switch distant place, colliery Download PDFInfo
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- CN204347209U CN204347209U CN201420833463.1U CN201420833463U CN204347209U CN 204347209 U CN204347209 U CN 204347209U CN 201420833463 U CN201420833463 U CN 201420833463U CN 204347209 U CN204347209 U CN 204347209U
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- colliery
- test unit
- auxiliary reclay
- low tension
- distant place
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Abstract
The utility model discloses the artificial leakage tripping test unit in a low tension switch distant place, a kind of colliery, comprise test resistance, described test resistance is in parallel with load equipment, and described test resistance ground connection, wherein, described test unit also comprises: auxiliary reclay, and contact and the described test resistance of described auxiliary reclay are in series; The time relay, the coil of the described time relay and described auxiliary reclay is in series.The artificial leakage tripping test unit in a low tension switch distant place, colliery that the utility model provides is by the contact of auxiliary reclay of connecting on the loop at test resistance place; and utilize the time relay to control the delay adhesive of auxiliary reclay; by the feature of on-delay; miss the time of the protective effect of gauge tap own; avoid the protection of getting rid of upper level, improve the security of test.
Description
Technical field
The utility model relates to the leakage tests technology of colliery low tension switch, particularly relates to the artificial leakage tripping test unit in a low tension switch distant place, a kind of colliery.
Background technology
For the electric switch of underground coal mine, usual needs regularly carry out the artificial leakage tripping test in a distant place, to detect the reliability of electric switch.
In prior art, usually adopt test resistance to be connected with switch, specifically have following two kinds of modes:
One, Fig. 1 is the test unit schematic diagram with branch's feeding switch in prior art, as shown in Figure 1, when testing, first disconnecting branch's feeding switch 1, accessing test resistance 3 (127V 2K Ω, 10W resistance in the gauge tap 2 of distalmost end by different electric pressure; 380V 3.5K Ω, 10W resistance; 660V 11K Ω, 10W resistance; 1140V 20K Ω, 10W resistance; 3300V by specification provides data to perform), test resistance 3 and load equipment 4 are in parallel.Ex post, close branch's feeding switch 1 and gauge tap 2, if total feeding switch 5 trips, then electric switch is reliably sensitive, if total feeding switch 5 is failure to actuate, then needs to search reason and processes for the leakage latching protection of gauge tap 2.
Two, Fig. 2 is the test unit schematic diagram not having branch's feeding switch in prior art, as shown in Figure 2, when testing, disconnect total feeding switch 5, access test resistance 3, the cut-in method of test resistance 3 is identical with the first cut-in method with the test unit of branch's feeding switch.Close total feeding switch 5 and gauge tap 2, if total feeding switch 5 trips, then electric switch is reliably sensitive, if total feeding switch 5 is failure to actuate, then needs to search reason and processes.
Above-mentioned two kinds of test unit complex operations; and the front line insulation of feeding switch combined floodgate that colliery uses at present has monitoring; if monitoring is lower than 40K Ω; protective effect cannot be closed a floodgate; so need the protection of getting rid of upper level feeding switch before test; there are major safety risks, cause the accident such as device damage and personnel's electric shock.
Utility model content
The utility model provides a low tension switch distant place, a kind of colliery artificial leakage tripping test unit, to solve the problems of the prior art, improves the security of test.
The utility model provides the artificial leakage tripping test unit in a low tension switch distant place, a kind of colliery, and comprise test resistance, described test resistance is in parallel with load equipment, and described test resistance ground connection, wherein, described test unit also comprises:
Auxiliary reclay, contact and the described test resistance of described auxiliary reclay are in series;
The time relay, the coil of the described time relay and described auxiliary reclay is in series.
The artificial leakage tripping test unit in a low tension switch distant place, colliery as above, wherein, preferably: also comprise the first fuse, is in series with described test resistance.
The artificial leakage tripping test unit in a low tension switch distant place, colliery as above, wherein, preferably: also comprise the second fuse, is in series with the described time relay.
The artificial leakage tripping test unit in a low tension switch distant place, colliery as above, wherein, preferably: also comprise control transformer, the coil of the described time relay and described auxiliary reclay is arranged on the low-pressure side of described control transformer.
The artificial leakage tripping test unit in a low tension switch distant place, colliery as above, wherein, preferably: also comprise the 3rd fuse, be arranged on the high-pressure side of described control transformer.
The artificial leakage tripping test unit in a low tension switch distant place, colliery as above, wherein, preferably: also comprise explosion-resistant enclosure, is arranged on the outside of described test resistance, auxiliary reclay and the time relay.
The artificial leakage tripping test unit in a low tension switch distant place, colliery that the utility model provides is by the contact of auxiliary reclay of connecting on the loop at test resistance place; and utilize the time relay to control the delay adhesive of auxiliary reclay; by the feature of on-delay; miss the time of the protective effect of gauge tap own; avoid the protection of getting rid of upper level, improve the security of test.
Accompanying drawing explanation
Fig. 1 is the test unit schematic diagram with branch's feeding switch in prior art;
Fig. 2 is the test unit schematic diagram not having branch's feeding switch in prior art;
A low tension switch distant place, the colliery artificial leakage tripping test unit schematic diagram that Fig. 3 provides for the utility model embodiment.
Embodiment
Below in conjunction with embodiment, the utility model is described in detail.The identical Reference numeral of wherein identical parts represents.It should be noted that, the word "front", "rear" of use is described below, "left", "right", "up" and "down" refer to direction in accompanying drawing, word " interior " and " outward " refer to the direction towards or away from particular elements geometric center respectively.
A low tension switch distant place, the colliery artificial leakage tripping test unit schematic diagram that Fig. 3 provides for the utility model embodiment, as shown in Figure 3, the utility model embodiment provides the artificial leakage tripping test unit in a low tension switch distant place, a kind of colliery, comprise test resistance 3, described test resistance 3 is in parallel with load equipment, and described test resistance 3 ground connection, wherein, described test unit also comprises auxiliary reclay and the time relay.
Contact 61 and the described test resistance 3 of described auxiliary reclay are in series, and the coil 62 of the described time relay and described auxiliary reclay is in series.It will be appreciated by persons skilled in the art that auxiliary reclay has Multiple Type, its effect is all transmit M signal in control circuit.The time relay generally includes input sensing mechanism and output executing mechanism two parts composition.The former is for reflecting the change of input quantity, and the latter completes the break-make (to contactless relay) of contact deciliter action (to contact relay) or semiconductor element.In the present embodiment, the time relay can adopt model to be the relay of ST3PA-B, comprises coil 71 and contact 72, after the coil 71 of the time relay is energized, and can contact 72 adhesive after certain time delay of control time relay.
Auxiliary reclay also comprises contact 61 and coil 62, the contact 61 of auxiliary reclay is connected in the loop at test resistance 3 place, the coil 62 of auxiliary reclay is cascaded with the coil 71 of the time relay and contact 72, after contact 72 adhesive of the time relay, the coil 62 of auxiliary reclay obtains electric, thus controls contact 61 adhesive of auxiliary reclay, now, the loop conducting at test resistance 3 place, starts to carry out trip test.
Preferably, the artificial leakage tripping test unit in a low tension switch distant place, colliery that the utility model embodiment provides also comprises the first fuse 8, is in series, plays safety effect, prevent test resistance 3 to be burned with described test resistance 3, ensures safety.It will be appreciated by persons skilled in the art that the model of the first fuse can be selected according to the rated current of actual requirement and voltage, in the present embodiment, adopt model to be the fuse of RL5-16.
Similarly, this test unit can also comprise the second fuse 9, can arrange the second fuse 9 and be in series, to play a protective role with the described time relay.
On the basis of above-described embodiment, the artificial leakage tripping test unit in a low tension switch distant place, colliery that the utility model embodiment provides also comprises control transformer 10, the coil 62 of the described time relay and described auxiliary reclay is arranged on the low-pressure side of described control transformer 10, as shown in Figure 3.The high-pressure side of control transformer 10 is connected with electrical network 11, for low-pressure side provides power supply.
Preferably, the high-pressure side of control transformer 10 is provided with the 3rd fuse 12, identical with the effect of the second fuse 9 with the first fuse 8, the 3rd fuse 12 also can play safety effect, prevents test switch 3 to be burned.
Further, the artificial leakage tripping test unit in a low tension switch distant place, colliery that the utility model embodiment provides also comprises explosion-resistant enclosure 13, is arranged on the outside of described test resistance 3, auxiliary reclay and the time relay, to play explosive-proof protector effect.
The artificial leakage tripping test unit in a low tension switch distant place, colliery that the utility model embodiment provides is by the contact of auxiliary reclay of connecting on the loop at test resistance place; and utilize the time relay to control the delay adhesive of auxiliary reclay; by the feature of on-delay; miss the time of the protective effect of gauge tap own; avoid the protection of getting rid of upper level, improve the security of test.
Last it is noted that above embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
Claims (6)
1. the artificial leakage tripping test unit in a colliery low tension switch distant place, comprise test resistance, described test resistance is in parallel with load equipment, and described test resistance ground connection, it is characterized in that, described test unit also comprises:
Auxiliary reclay, contact and the described test resistance of described auxiliary reclay are in series;
The time relay, the coil of the described time relay and described auxiliary reclay is in series.
2. the artificial leakage tripping test unit in a low tension switch distant place, colliery according to claim 1, is characterized in that: also comprise the first fuse, is in series with described test resistance.
3. the artificial leakage tripping test unit in a low tension switch distant place, colliery according to claim 2, is characterized in that: also comprise the second fuse, is in series with the described time relay.
4., according to the arbitrary described artificial leakage tripping test unit in a low tension switch distant place, colliery of claim 1-3, it is characterized in that: also comprise control transformer, the coil of the described time relay and described auxiliary reclay is arranged on the low-pressure side of described control transformer.
5. the artificial leakage tripping test unit in a low tension switch distant place, colliery according to claim 4, is characterized in that: also comprise the 3rd fuse, be arranged on the high-pressure side of described control transformer.
6., according to the arbitrary described artificial leakage tripping test unit in a low tension switch distant place, colliery of claim 1-3, it is characterized in that: also comprise explosion-resistant enclosure, be arranged on the outside of described test resistance, auxiliary reclay and the time relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420833463.1U CN204347209U (en) | 2014-12-24 | 2014-12-24 | The artificial leakage tripping test unit in a low tension switch distant place, colliery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420833463.1U CN204347209U (en) | 2014-12-24 | 2014-12-24 | The artificial leakage tripping test unit in a low tension switch distant place, colliery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204347209U true CN204347209U (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420833463.1U Active CN204347209U (en) | 2014-12-24 | 2014-12-24 | The artificial leakage tripping test unit in a low tension switch distant place, colliery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108710059A (en) * | 2018-08-23 | 2018-10-26 | 吕清胜 | A kind of artificial distance leakage testing device of underground coal mine |
| CN108983024A (en) * | 2018-07-14 | 2018-12-11 | 山东工商学院 | Mining earth leakage protective test and distant place closing device |
-
2014
- 2014-12-24 CN CN201420833463.1U patent/CN204347209U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983024A (en) * | 2018-07-14 | 2018-12-11 | 山东工商学院 | Mining earth leakage protective test and distant place closing device |
| CN108710059A (en) * | 2018-08-23 | 2018-10-26 | 吕清胜 | A kind of artificial distance leakage testing device of underground coal mine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |