CN207882301U - A kind of loop resistance instrument p-wire case - Google Patents

Abstract

The utility model provides a kind of loop resistance instrument p-wire case, including:The offline case of foot wheel, handled case of reaching the standard grade, special instrument electric current connecting line and special equipment voltage connecting line；Offline case and case of reaching the standard grade are body structure, and size is consistent with internal structure；When split, case of reaching the standard grade overlays on offline case, is fixedly connected by lock；The front of offline case and case of reaching the standard grade is provided with line outlet, and inside is all provided with partition board and winding mechanism, electric current banana bin and voltage banana bin are installed on the outside of the coiling disk of winding mechanism one end；The offline case back side sets collapsible luggage and draws, and there are two castor and two stabilizer blades for bottom surface dress；Reach the standard grade case top surface installation handle；One end of special instrument electric current connecting line and special equipment voltage connecting line is banana plug, and the other end is U-shaped plug.Existing any a loop resistance instrument uses in the market for the utility model collocation, effectively measures large span long distance loop resistance test value.

Description

A kind of loop resistance instrument p-wire case

Technical field

The utility model is related to the fields such as the examination of power equipment, maintenance and hidden troubles removing more particularly to a kind of circuits Resistance instrument p-wire case.

Background technology

Circuit resistance tester is to execute standard DL/T845.4-2004 according to the newest electric power of the People's Republic of China (PRC), is used High frequency switch power technology and digital circuit technique is designed in conjunction forms.It is suitable for the survey of switching control device loop resistance Amount.It tests the direct current 100A that electric current uses national standard to recommend.Loop resistance can be directly measured in the case of electric current 100A, It is used in combination number to show.Circuit resistance tester is applied includes in substation equipment：Vacuum circuit breaker, SF6 breakers, SF6 The equipment such as gas insulated metal enclosed swit chgear, main bus-bar, disconnecting switch.

Existing circuit resistance tester commonly uses four line detection method detection device loop resistances, i.e.,：Two testing current lines and Two voltage tester lines are clipped in tested conductor both sides respectively, and principle current line is in inside, and on the outside, usual anode is electric for pressure-wire Stream, voltage tester line indicate that, in tested conductor one end, negative terminal electric current, voltage tester line are indicated with black with red, tested The conductor other end is tried, circuit resistance tester exports 100A or the electric current of bigger when measuring, by high frequency switch power, is applied to Between two ends of measured resistance, the analog signal that electric current flows through pressure drop produced by measured resistance, warp are acquired by sample circuit After preamplifier amplification, digital signal is converted analog signals by A/D converter, then filtered to data through microprocessor Wave, operation, processing, according to series circuit current equal principle everywhere, by Ohm's law R=U/I, by the pressure for loading both ends The ratio between electric current I in drop U and circuit obtains the DC resistance of measured body.

Existing loop resistance instrument p-wire is divided into two classes, the first kind by quantity：Loop resistance instrument p-wire is four total, point It is not red electric current, voltage tester line, black current, voltage tester line.Such Current Voltage tests line length generally on 3 meters of left sides It is right.Second class：Loop resistance instrument p-wire is two total, is still actually four lines, is only designed to electric current, voltage tester line One, packet is thoroughly done away with one in edge layer, but electric current, pressure-wire are independently not attached to, and only electric current, pressure-wire are at the both ends of coenosarc line point It opens, such Current Voltage tests line length at 5 meters or so.The above two class testings line is encountering SF6 gas insulated metal enclosed swit chgears, main mother When line large span long distance loop resistance test, test line length is unsatisfactory for required distance, and traditional test line can only sectionalization test The loop resistance value addition that every section is tested is shown that large span is devices under loop resistance value, in this way because every by loop resistance value There is different degrees of error in a test point test, multistage is added the loop resistance value error bigger obtained, and test value is inaccurate, It cannot reflect loop resistance value completely, can only make reference, this generates heat hidden danger and unfavorable to discovering device.Other second class testing Line need to keep current line test position constant when heating accident point is investigated in overhaul of the equipments, and model is tested by mobile pressure-wire It encloses, investigation heating accident point cannot be satisfied such quick investigation method because of electric current, voltage tester line coenosarc, often can only will be electric Stream, pressure-wire move together, and change test clamp contact environment, increase test error, and the consuming time is longer in the process, reduce Investigate efficiency.

Existing loop resistance instrument p-wire is divided into two classes, the first kind according to storing mode：It is stored in loop resistance instrument container It is interior.Advantage：Portable, Yi Nayi is put.Weakness：Parking space is limited, limitation test line length, and is taken when using p-wire every time Inconvenience is taken, if the irregular instrument container that easily causes of storage can not cover tightly, instrument container is easily caused for a long time and squeezes rupture.Second class： It is stored in dedicated testing wire case.Advantage：Line case volume is big, can store longer p-wire.Weakness：Line box space is relatively sufficient, surveys Examination line is unlocked, is rocked in transportational process and easily leads to the mixed strand of the neat p-wire of winding together, smoothes out with the fingers line cost when in use Time is longer, and four or both threads input human cost height are received after every task, spends the time longer.

Utility model content

Technical problem to be solved by the utility model is to provide a kind of loop resistance instrument p-wire casees, can be effective Measure large span long distance loop resistance test value.

In order to solve the above-mentioned technical problem, the utility model provides a kind of loop resistance instrument p-wire case, it may include：

The offline case of foot wheel, handled case of reaching the standard grade, special instrument electric current connecting line and special equipment voltage connecting line；

The offline case and the case of reaching the standard grade are body structure, and the size of two babinets is consistent with internal structure；It spells When conjunction, the case of reaching the standard grade overlays on the offline case, is fixedly connected by lock；The offline case is reaching the standard grade case just with described Face is provided with line outlet, and inside is all provided with partition board and winding mechanism, electric current is installed on the outside of the coiling disk of described winding mechanism one end Banana bin and voltage banana bin；

The offline case back side sets collapsible luggage and draws, and there are two castor and two stabilizer blades for bottom surface dress；

The case top surface installation handle of reaching the standard grade；

One end of the special instrument electric current connecting line and the special equipment voltage connecting line is banana plug, another End is U-shaped plug.

In an alternate embodiment of the invention, the offline case and the case of reaching the standard grade are that aluminum alloy material is made.

In an alternate embodiment of the invention, the offline case and the case of reaching the standard grade are equipped with case lid, the case lid by loose-leaf with Babinet connects, and is locked by latching.

In an alternate embodiment of the invention, the winding mechanism includes that roll, the coiling disk at both ends and a hand drive are shaken , the winding mechanism is run through the partition board, on the roll in the two spaces that the partition board isolates rotating around Discharge streamline and pressure-wire.

In an alternate embodiment of the invention, one end of the current line is connected with the electric current banana bin, the pressure-wire One end is connected with the voltage banana bin.

In an alternate embodiment of the invention, the hand of the winding mechanism drive crank be installed on the upper and lower box it is outer with it is described Roll is connected, and the hand drives crank and the coiling disk heteropleural for being equipped with electric current banana bin and voltage banana bin.

In an alternate embodiment of the invention, the offline case case and is equipped with electric current banana bin and voltage banana with described reach the standard grade The coiling disk respective side of socket is provided with wiring reserved opening.

In an alternate embodiment of the invention, the offline case from can be according to actual test demand around putting different length in the case of reaching the standard grade The current line and pressure-wire of degree.

The advantageous effect of the utility model embodiment is：

The loop resistance instrument p-wire case existing any a loop resistance instrument in the market that can arrange in pairs or groups uses；It secondly, can It is single to complete test job using the loop resistance instrument p-wire case, and can quickly extract out, withdraw p-wire, shorten test work Make front and back time, reduces cost of labor；In addition, the line case can store long range p-wire, so as to directly measure Large span conductor circuit resistance.

Description of the drawings

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property It puts, other drawings may also be obtained based on these drawings.

Fig. 1 is a kind of structure of one embodiment of the case of reaching the standard grade of loop resistance instrument p-wire case provided by the utility model Schematic diagram.

Fig. 2 is a kind of structure of one embodiment of the offline case of loop resistance instrument p-wire case provided by the utility model Schematic diagram.

Fig. 3 is a kind of assembling schematic diagram of one embodiment of loop resistance instrument p-wire case provided by the utility model.

Fig. 4 is the structure of one embodiment of special electric current connecting line provided by the utility model and special voltage connecting wire Schematic diagram.

Specific implementation mode

The explanation of following embodiment is refer to the attached drawing, can be to the particular implementation implemented to example the utility model Example.

The utility model provides a kind of loop resistance instrument p-wire case, and construction is as shown in Figure 1-Figure 3, including：

The offline case 1 of foot wheel, handled case 2 of reaching the standard grade, special instrument electric current connecting line 3 and voltage connecting wire 4；

Offline case 1 and case 2 of reaching the standard grade are rectangular box body structure, and the size of two babinets is consistent with internal structure；On It when line case 2 is with offline 1 split of case, overlays on offline case 1, is fixedly connected by lock 11；

1 back side of offline case is equipped with collapsible luggage pull rod 12, and there are two castor 13 and two stabilizer blades 99 for bottom surface dress, and front is opened Line outlet 14, inside set partition board 10 and winding mechanism 5, and electric current banana plug is installed in 51 outside of coiling disk of 5 one end of winding mechanism Seat 55 and voltage banana bin 56；

It reaches the standard grade 2 top surface of case installation handle 22, front opens line outlet 24, and inside sets partition board 10 and winding mechanism 5, winding mechanism The 51 outside installation electric current banana bin 55 of coiling disk and voltage banana bin 56 of 5 one end；

Special instrument electric current connecting line 3 and 4 one end of voltage connecting wire are banana plug, and the other end is U-shaped plug.

As an example, the present embodiment is electric for storing negative terminal black current line 6 and negative terminal black by 1 painted black of offline case Crimping 7, case 2 of reaching the standard grade are painted red for storing anode red current line 8 and anode red pressure-wire 9；Certainly, in actual test In work, if the current line and pressure-wire stored are distinguished without color, also positive and negative terminal can be distinguished by babinet institute's coating colour, It avoids confusion and uses line.

In the present embodiment, the babinet of offline case 1 selects aluminum alloy material to be made, and there are one collapsible for box back surface installation Luggage pull rod 12；Bottom surface is equipped with 4 castors 13；Box house be equipped with one piece of aluminum alloy baffle plate 10, the aluminum alloy baffle plate 10 with The bottom surface and the back side of the offline case 1 are vertical, and babinet isolation is become left and right two spaces, respectively corresponding storage negative terminal black electricity Streamline 6 and negative terminal black voltage line 7, certainly in other alternative embodiments, leftward space can also store negative terminal black voltage line 7, rightward space can also store negative terminal black current line 6.Line outlet 14 is opened in the front of offline case 1, for taking out during the test Go out and recycle negative terminal black current line 6 and negative terminal black voltage line 7.

It is fixed there are one winding mechanism 5 in the inside left and right sides middle position of offline case 1, runs through aluminum alloy baffle plate 10, which drives crank 52 by roll 50, the coiling disk 51 at both ends and a hand and constitutes, in the present embodiment, Hand drives crank 52 and is placed in connection roll 50 outside the right side of offline case 1, is equipped with just on 51 outer surface of coiling disk in left side Electric current banana bin 55 and positive terminal voltage banana bin 56 are held, is corresponded on the left shell of offline case 1 and opens opening there are one sector Mouthful, the external reserved opening 15 as anode electric current banana bin 55 and positive terminal voltage banana bin 56.Negative terminal black current line 6 twines It being wound on roll 50, one end is connected with anode electric current banana bin 55, and negative terminal black voltage line 7 is wrapped on roll 50, One end is connected across partition board 10 with positive terminal voltage banana bin 56.Certainly in other alternative embodiments, hand, which drives crank 52, also may be used It is outer to be placed in left side, the reserved opening of right side opening anode electric current banana bin 55 and positive terminal voltage banana bin 56；

It is connect by stainless steel loose-leaf 17 with babinet in top design case lid 16, the case lid 16 of offline case 1, passes through case lid 18 locking of lock, in the present embodiment, one layer of storage layer 19, storage layer can be added in the box house superjacent air space of offline case 1 19 use movable diaphragm structures, and appearance and size is slightly less than babinet inside casing size, handle is equipped in partition board both sides, can facilitate from Storage layer 19 is taken out in babinet.It is surrounded by lock 20 in case lid 16, to dock the lock 21 for 2 bottom surrounding of case of reaching the standard grade, is made It reaches the standard grade to fasten when case 2 overlays on offline case 1 and avoids sliding in transportational process.

Reach the standard grade case 2 size it is consistent with offline case 1, internal structure is also consistent, using partition board 10 be isolated into left and right two skies Between, for storing anode red current line 8 and anode red pressure-wire 9；Still in babinet front

Open line outlet 24；It still uses winding mechanism 5 and anode electric current is installed on 51 outer surface of coiling disk of side Banana bin 55 and positive terminal voltage banana bin 56, and corresponding it is provided with the external reserved opening of socket 25 in body side.Anode is red Current line 8 is wrapped on roll 50, and one end is connected with anode electric current banana bin 55, anode red pressure-wire 9 be wrapped in around On spool 50, one end is connected across partition board 10 with positive terminal voltage banana bin 56.

Case lid 26 is still devised at the top for case 2 of reaching the standard grade, case lid 26 is connect by stainless steel loose-leaf 27 with babinet, passed through 28 locking of case lid lock, is still designed with one layer of storage layer 29；The difference is that it is fitted without universal wheel in the bottom surface for case 2 of reaching the standard grade, But it is surrounded by lock 21 in bottom, for overlaying on offline case 1 and locking；Different also has in the case lid of case 2 of reaching the standard grade There are one handles 22 for the installation of 26 top surfaces.

Special instrument electric current connecting line 3 and special equipment voltage connecting line 4 are that the loop resistance instrument p-wire case is external auxiliary Equipment is helped, it is banana plug to be designed to one end, and one end is U-shaped plug；As shown in figure 4, during the test, special instrument electricity Stream connecting line 3 banana plug 31 be inserted in offline case 1 or the anode electric current banana bin 55 for case 2 of reaching the standard grade on, U-shaped plug 32 connects On the electric current binding post of external equipment；The banana plug 41 of special equipment voltage connecting line 4 is inserted in offline case 1 or case of reaching the standard grade On 2 positive terminal voltage banana bin 56, U-shaped plug 42 is connected on the voltage link column of external equipment.In the present embodiment, special Instrument electric current connecting line 3 is the current line of 20 squares of 1.5 meters of specifications, and one end is 6mm banana plugs, and one end is inserted for 8mmU types Head；Special equipment voltage connecting line 4 is that a 1.5 meters long 6 squared voltage line one end is 4mm banana plugs, for connecting coiling Disk 4mm voltage banana bins, one end are 4mmU type plugs.

In actual test work, first by anode red current line 28, anode red pressure-wire 29, negative terminal black current Line 6 and negative terminal black voltage line 7 are drawn out to required length from line outlet 24 and line outlet 14 respectively；Further, it shakes The hand of upper offline case, which drives crank 52, makes anode electric current banana bin 55 and positive terminal voltage banana bin 56 be directed at reserved opening 25 and pre- Stay mouth 15；Further, the anode electric current for being inserted into offline case respectively using the banana plug 31 of special instrument electric current connecting line 3 is fragrant Any of several broadleaf plants socket 55, U-shaped plug 32 connect instrument；It is inserted into offline case respectively using the banana plug 41 of special equipment voltage connecting line 4 Positive terminal voltage banana bin 56, U-shaped plug 42 connects instrument；Further, anode red current line 28, anode red pressure-wire 29, the pull-out end of negative terminal black current line 6 and negative terminal black voltage line 7 is clipped in the both ends of measured conductor respectively, can open Beginning is tested.After the completion of test, all connection positions are separated, shake the line withdrawal that hand drives crank 52 by pull-out.

By above description it is found that the advantageous effect of the utility model embodiment is：The loop resistance instrument p-wire case The existing any a loop resistance instrument in the market that can arrange in pairs or groups uses；Secondly, it can be singly used the loop resistance instrument p-wire case Test job is completed, and can quickly extract out, withdraw p-wire, shortens the time before and after test job, is reduced artificial Cost；In addition, the line case can store long range p-wire, so as to directly measure large span conductor circuit resistance.

Above disclosures are merely preferred embodiments of the utility model, with this utility model cannot be limited certainly Interest field, therefore equivalent variations made according to the claim of the utility model still fall within the scope of the utility model.

Claims (8)

1. a kind of loop resistance instrument p-wire case, which is characterized in that including：

The offline case of foot wheel, handled case of reaching the standard grade, special instrument electric current connecting line and special equipment voltage connecting line；

The offline case and the case of reaching the standard grade are body structure, and the size of two babinets is consistent with internal structure；When split, The case of reaching the standard grade overlays on the offline case, is fixedly connected by lock；The front of the offline case and the case of reaching the standard grade is equal It is provided with line outlet, inside is all provided with partition board and winding mechanism, electric current banana is installed on the outside of the coiling disk of described winding mechanism one end Socket and voltage banana bin；

The offline case back side sets collapsible luggage and draws, and there are two castor and two stabilizer blades for bottom surface dress；

The case top surface installation handle of reaching the standard grade；

One end of the special instrument electric current connecting line and the special equipment voltage connecting line is banana plug, and the other end is equal For U-shaped plug.

2. loop resistance instrument p-wire case according to claim 1, which is characterized in that the offline case and the case of reaching the standard grade It is that aluminum alloy material is made.

3. loop resistance instrument p-wire case according to claim 1, which is characterized in that the offline case and the case of reaching the standard grade It is equipped with case lid, the case lid is connect by loose-leaf with babinet, is locked by latching.

4. loop resistance instrument p-wire case according to claim 1, which is characterized in that the winding mechanism includes coiling Axis, the coiling disk at both ends and a hand drive crank, and the winding mechanism runs through the partition board, isolated in the partition board Rotating around electric discharge streamline and pressure-wire on the roll in two spaces.

5. loop resistance instrument p-wire case according to claim 4, which is characterized in that one end of the current line with it is described Electric current banana bin is connected, and one end of the pressure-wire is connected with the voltage banana bin.

6. loop resistance instrument p-wire case according to claim 5, which is characterized in that the hand of the winding mechanism drives Crank is installed on outside the upper and lower box to be connected with the roll, and the hand drives crank and is equipped with electric current banana bin and electricity Press the coiling disk heteropleural of banana bin.

7. loop resistance instrument p-wire case according to claim 1, which is characterized in that the offline case and the case of reaching the standard grade It is provided with wiring reserved opening with the coiling disk respective side for being equipped with electric current banana bin and voltage banana bin.

8. loop resistance instrument p-wire case according to claim 1, which is characterized in that the offline case and the case of reaching the standard grade It is interior can be according to actual test demand around the current line and pressure-wire for putting different length.