CN107290488A - Transformer SF6Gas test fixture - Google Patents
Transformer SF6Gas test fixture Download PDFInfo
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- CN107290488A CN107290488A CN201710587607.8A CN201710587607A CN107290488A CN 107290488 A CN107290488 A CN 107290488A CN 201710587607 A CN201710587607 A CN 201710587607A CN 107290488 A CN107290488 A CN 107290488A
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- screw mandrel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The present invention relates to a kind of transformer SF6Gas test fixture, the test fixture includes joint, push up bucket, cross bar, screw mandrel, by means of power bar and grasping, joint one end connecting detection pipe, push up bucket upper end and opening is set, push up bucket lower end and bottom is set, joint connecting detection pipe one end is sleeved in the opening, centre bore and some circumferences is set to be distributed in the detection pore of centre bore on bottom, detection pipe one of therethrough detection pore, the screwed hole matched with the screw mandrel is set in the middle part of cross bar, screw mandrel top is in coniform, wire rod thread is connected in screwed hole, screw mandrel top is withstood in the centre bore, the diameter of centre bore is less than the diameter of screw mandrel, the end of screw mandrel, which is set, borrows power bar, the two ends of the cross bar, which are respectively provided with, to be grasped.Transformer SF of the present invention6Gas test fixture is simple in construction, easy to operate, and fixation, service life is long, and cost is low, is adapted to the detection interface of plurality of specifications, has wide range of applications.
Description
Technical field
The present invention relates to a kind of transformer station's electrical test fixing device, and in particular to a kind of transformer SF6Gas is detected
Fixing device.
Background technology
Sulfur hexafluoride SF6Gas has good electrical insulation properties and excellent arc extinction performance, and its electric strength is same
2.5 times of nitrogen under one pressure, breakdown voltage is 2.5 times of air, and arc extinguishing ability is 100 times of air, be one kind between sky
Super-pressure insulating dielectric materials of new generation between gas and oil, SF6With its good insulating properties and arc extinction performance extensive use
In power equipment, such as：Breaker, sealing gland close combined capacitor, transformer etc..
SF6Gas humidity is one of main project that new gas is checked and accepted and operation gas is supervised, and the size of humidity is directly affected
The quality of gas and the safe operation of sulfur hexafluoride electrical equipment, under higher air pressure, excessive moisture is set to gas-insulated
The influence of standby middle solid insulation dielectric surface flashover voltage is serious, results even in internal flashover accident, therefore, SF in operation6Electricity
The gas purity control of gas equipment is very important, arc extinction performance to electrical equipment of the height of gas purity, dielectric strength
And the aging effects of electrical equipment are very big.《Power transmission and transformation equipment state overhauling testing regulations》（Q/GDW 1168-2013）Regulation：
SF6Gas purity >=99.9（New gas）, SF6Gas purity >=97%（Operation）；SO2≤1μL/L（Demand value）, H2S≤1μL/L
（Demand value）.When device interior occurs electric discharge or overheated, inside can produce characteristic gas, pass through SF6Gas componant detects energy
The problem of existing inside effective discovering device.
Carrying out SF in the prior art6When gas is detected, it is necessary first to which three screws on cover plate are dismantled, then connecing
Head is connected by these three screws and flange, and joint is turned on again after test, finally cover plate recovered again, in this process
In need dismounting screw 4 times, this process consumes substantial amounts of manpower and materials, causes detection efficiency very low.The flange of interface
It is aluminium material, not enough, frequently dismounting can be damaged flange internal thread, and then cause cover plate for sealing not tight, rainwater and dew meeting for hardness
Into interface, it is possible to the effect for influenceing gas to detect, seriously moisture is possible to enter in air inlet chamber, entail dangers to equipment
Insulation and tester sensor.
Notification number discloses a kind of SF for CN203572818U Chinese utility model patent6Gas-detecting device experiment connects
Mouth fast fixture device, can be as needed by its tight locking button floor installation in the outer face of test interface or inflatable interface
On, locking pull bar is driven by rotation lock spanner, the interface of distal end is caught on using the movable locking bail of its end（Inflatable interface
Or test interface）, make compression between two interfaces, make valve connection closer.SF provided in an embodiment of the present invention6Gas
Detection means test interface fast fixture device, easy to use, without positioning, Fast Installation is raised labour efficiency, can independently grasped
Make, screw rod is locked without two people（Past screw rod connection method）, while also eliminating potential safety hazard.But, the patent
It is complicated, not easy processing, three lock set spanners are bolt arrangements, it is necessary to three times are tightened, troublesome poeration, and the patent is only
Joint flange and inflation flange suitable for special diameter, are of limited application.
Notification number discloses a kind of SF for CN103364529B Chinese invention patent6 Micro- water tester joint fixing apparatus
And its application method, which employs one flange of increase（That is bearing）Method compress tester joint flange and gas-charging connection method
Orchid, and the design for having used hook to be arranged in pairs or groups with handle, enable hook to hook gas-charging connection flange, so that tester joint is with filling
Gas joint is completely embedded, the SF6Micro- water tester joint fixing apparatus and its application method are simplified needs to use spanner originally
Or buckle is the step of block adpting flange, compression, the connection work, contracting of joint just can be easily accomplished without using excessive manpower
The short testing time, also reduce work risk.But, the first connecting pin and the second connecting pin manufacture difficulty described in the patent
Greatly, operating process is certain for the length for putting a stress, joint flange discontinuity, and hook, is only suitable for connecing for specific thicknesses
Head flange and inflation flange, are of limited application.
The content of the invention
To overcome drawbacks described above, it is an object of the invention to provide a kind of transformer SF6Gas test fixture.
To achieve the above object, the present invention is adopted the following technical scheme that：
A kind of transformer SF6Gas test fixture, including joint, top bucket, cross bar, screw mandrel, by means of power bar and grasp, it is described
Joint one end connecting detection pipe, the top bucket upper end sets opening, and the top bucket lower end sets bottom, the joint connecting detection
Pipe one end is sleeved in the opening, sets centre bore and some circumferences to be distributed in the detection pore of centre bore on the bottom,
The screwed hole matched with the screw mandrel, the silk are set in the middle part of the detection pipe one of therethrough detection pore, the cross bar
Bar top is in coniform, and the wire rod thread is connected in screwed hole, and the screw mandrel top is withstood in the centre bore, it is described in
The diameter in heart hole is less than the diameter of screw mandrel, and the end of the screw mandrel, which is set, borrows power bar, and the two ends of the cross bar, which are respectively provided with, to be grasped.
Preferably, the detection pore sets three.
Preferably, described one end grasped opens up the fixing hole matched with the cross bar, and the other end that grasps is in L
Shape.
Preferably, length >=75mm of the top bucket.
Preferably, the bottom is made up of wear-resisting steel plate.
Preferably, the wear-resisting steel plate is made up of the chemical composition of following percentage by weight：C 0.1-0.35%, Si 0.1-
0.5%, Mn 0.5-1.0%, Ti 0.8-1.5%, Zr 0.05-0.3%, Ni 0-0.2%, Mo 0.3-0.6%, Cr 0.1-0.45%,
Al 0.05-0.1%, Ca 0.003-0.005%, V 0-0.05%, remaining is Fe and inevitable impurity.
Preferably, the manufacture method of the wear-resisting steel plate comprises the following steps：Match and smelt by above-mentioned chemical composition, through casting
Make, heat, rolling, cooling down and tempering step, producing；In the heating stepses, heating-up temperature is 1080-1300 DEG C, insulation
0.5-2h；In the milling step, roughing temperature is 1000-1250 DEG C, and final rolling temperature is 820-950 DEG C；The cooling step
In, using cooling by water, extremely≤500 DEG C are air-cooled to room temperature, cooling by water speed >=20 DEG C/s again；In the tempering step, heating
Temperature is 150-400 DEG C, is incubated 1-3h.
The effect of each chemical composition of the present invention is as follows：
C：C can improve the intensity and hardness of steel, and then improve the wearability of steel, but unfavorable to the toughness and welding performance of steel,
The present invention is by C content control in 0.1-0.35%.
Si：Si can improve the hardness and intensity of steel, also with corrosion resistance and oxidation resistant effect, but to the toughness of steel
Unfavorable, the present invention is by the control of Si contents in 0.1-0.5%.
Mn:Mn can improve the intensity and toughness of steel, moreover it is possible to improve the hot-working character of steel, but manganese amount is too high, and having makes
The tendency of grain coarsening, and increase the crisp sensitiveness of steel belt roof bolt, it is easily caused in strand and segregation and crackle occurs, it is of the invention by Mn
Content is controlled in 0.5-1.0%.
Ti：Ti is one of carbide, and trickle TiC particles are formed with carbon, and TiC particles are tiny, are distributed in
Crystal boundary, reaches the effect of crystal grain thinning.In addition, a large amount of, equally distributed TiC particles are highly beneficial in the wearability for improving steel,
It is 0.8-1.5% that Ti content is controlled in abrasion-resistant stee of the present invention.
Zr：Zr easily absorbs hydrogen, nitrogen and oxygen, improves weldability, impact flexibility and the crack resistance of steel, and Zr can also improve steel
Wearability, Zr contents of the present invention be 0.05-0.3%.
Ni：Ni can improve the intensity of steel, and keep good plasticity and toughness, and nickel has higher corrosion-resistant energy to soda acid
Power, but too high levels are easily caused steel surface oxide skin and are difficult to come off, and Ni contents control of the present invention is 0-0.2%.
Mo：Mo can make the crystal grain refinement of steel, improve quenching degree and thermostrength, enough intensity can be also kept in high temperature
And creep resisting ability, mechanical performance can be improved by adding molybdenum, while easily it is passivated steel plate in some reductants, Mo of the present invention
Content is controlled in 0.3-0.6%.
Cr：Cr main functions are reduction critical cooling rates, improve the quenching degree of steel plate, and Cr can form a variety of carbon in steel
Compound, can also improve the intensity and hardness of steel plate, but reduce the plasticity and toughness of steel simultaneously, and Cr contents control of the present invention is in 0.1-
0.45%。
Al：Al can crystal grain thinning, nitrogen and oxygen in fixed steel mitigate steel to the sensitiveness of breach, steel are reduced or eliminated
Aging phenomenon, and the toughness of steel is improved, Al content control of the present invention is in 0 .05-0.1 %.
Ca：Steel grade field trash can be changed into CaS or CaO by Ca, and the oxide and Sulfide inclusion that calcium is formed are close
Degree is small, it is easy to float discharge, Ca of the present invention content 0.003-0.005%.
V：V is excellent deoxidier, can thinning microstructure crystal grain, improve intensity and toughness, the carbide of V and C formation exists
The hydrogen attack resistance of steel can be also improved under HTHP, V content of the present invention is 0-0.05%.
The positive beneficial effect of the present invention：
1. transformer SF of the present invention6Gas test fixture, including joint, top bucket, cross bar, screw mandrel, by means of power bar and drawing
Grab, joint one end connecting detection pipe, the top bucket upper end sets opening, the top bucket lower end sets bottom, the joint
Connecting detection pipe one end is sleeved in the opening, sets centre bore and some circumferences to be distributed in the inspection of centre bore on the bottom
Test tube hole, the detection pipe one of therethrough detection pore, the present invention makes joint and SF by top bucket6Gas vent flange connects
Connect, joint uniform force is simple to operate.
The screwed hole matched with the screw mandrel is set in the middle part of the cross bar, and the screw mandrel top is in coniform, the screw mandrel
It is threaded in screwed hole, the screw mandrel top is withstood in the centre bore, the diameter of the centre bore is less than the straight of screw mandrel
Footpath, the end of the screw mandrel, which is set, borrows power bar, and the two ends of the cross bar, which are respectively provided with, to be grasped, and grasps consolidating in cross bar diverse location
It is fixed, the fixation of different-diameter joint flange and gas-charging connection is realized, is rotated by screw mandrel in cross bar, meets different-thickness joint
Top closes close between the fixation of flange and gas-charging connection, and screw mandrel and top bucket, conveniently exerts oneself, and borrows power bar by rotation, makes to connect
Head and SF6It is fitted close between gas flange, while two grasp reverse tension, by fixing device fixation of the present invention.
Transformer SF of the present invention6Gas test fixture is simple in construction, easy to operate, fixation, and is not required to
To repeat twisting SF6Screw on gas vent flange, extends the service life of each part, saves manpower, reduce into
This, is adapted to the detection interface of plurality of specifications, has wide range of applications.
2. detection pore of the present invention sets three, the suitable detection pore of selection pulls out detection pipe as needed, prevents
Only detection pipe is distorted in the bucket of top, easy to operate.Described one end grasped opens up the fixing hole matched with the cross bar, described
Grasp the other end L-shaped, grasp two ends difference fixed transverse rod and SF6Gas vent flange, consolidates fixing device joint of the present invention
It is fixed firm.Length >=75mm of the top bucket, it is ensured that detection pipe will not be bent in the bucket of top.
3. bottom of the present invention is made up of wear-resisting steel plate, wear-resisting steel plate chemical composition is in C, Si, Mn, Ni, Cr, Ca
On the basis of, Ti and Zr are with the addition of, the wearability of steel is substantially increased, Mo, V and Al is added, has refined crystal grain, improved raising steel
Intensity and toughness, each chemical composition synergy of the invention, excellent in mechanical performance, top bucket bottom wear-resisting steel plate hardness 390-
422HB, hardness is high；Tensile strength 1161-1325MPa, intensity is high；Elongation percentage 14-18%, good toughness；- 40 DEG C of ballistic work 61-
92J, impact resistance is good；Wear rate≤13.02mg/m, wear rate is low, and anti-wear performance is excellent.
Brief description of the drawings
Fig. 1 is the transformer SF of the embodiment of the present invention 16Gas test fixture assembled state main structure diagram；
Fig. 2 is the transformer SF of the embodiment of the present invention 16Gas test fixture disassembled form side structure schematic view；
Fig. 3 is the transformer SF of the embodiment of the present invention 16Gas test fixture disassembled form overlooking the structure diagram；
Fig. 4 is the joint design schematic diagram of the embodiment of the present invention 1；
In figure：1- joints, 2- tops bucket, 3- cross bars, 4- screw mandrels, 5- borrows power bar, and 6- is grasped, 7- detection pipes, 8- centre bores, 9- detections
Pore, 10- screwed holes, 11- fixing holes.
Embodiment
With reference to some embodiments, the present invention is further described.
Embodiment 1
Referring to Fig. 1-4, a kind of transformer SF6Gas test fixture, including joint 1, top bucket 2, cross bar 3, screw mandrel 4, borrow
Power bar 5 and grasp 6, one end connecting detection pipe 7 of joint 1, the top upper end of bucket 2 sets opening, and the top lower end of bucket 2 is set
Bottom, the length of the top bucket 2 is 80mm, and described one end of 1 connecting detection pipe of joint 7 is sleeved in the opening, the bottom
The upper detection pore 9 for setting centre bore 8 and three circumferences to be distributed in centre bore 8, the detection pipe 7 one of therethrough detection pipe
Hole 9, the middle part of cross bar 3 sets the screwed hole 10 matched with the screw mandrel 4, and the top of screw mandrel 4 is in coniform, the screw mandrel
4 are threaded in screwed hole 10, and the top of screw mandrel 4 is withstood in the centre bore 8, and the diameter of the centre bore 8 is less than silk
The diameter of bar 4, the end of the screw mandrel 4, which is set, borrows power bar 5, and the two ends of the cross bar 3, which are respectively provided with, grasps 6, it is described grasp 6 one
End opens up the fixing hole 11 matched with the cross bar 3, and the fixing hole 11 is run through at the two ends of cross bar 3.
Transformer SF of the present invention6Gas test fixture is in use, first by joint 1（Referring to Fig. 4）Upper connection inspection
Test tube 7, then by the one end of 1 connecting detection pipe of joint 7 be sleeved on it is described top the upper end open of bucket 2 in, the other end of detection pipe 7 from top bucket
Pulled out in one detection pore 9 of 2 bottoms and be connected to test equipment, then by the other end of joint 1 and SF6Gas vent flange connects
Connect, now by the internal thread connection wire rod 4 of 3 screwed hole of cross bar 10, the top of screw mandrel 4 is withstood in the centre bore 8 of the bottom of bucket 2, will
The other end for grasping 6 is hung and closed in SF through the fixing hole 11 for grasping 6 by the two ends of cross bar 36On gas vent flange, now towards one
Individual direction is rotated by means of power bar 5, using code principle is drawn, makes joint 1 and SF6Gas vent flange is fitted close, while grasping 6 drawings
Tightly, SF6Gas test fixture fixation；When detection completes to dismantle this device, rotate in the opposite direction by means of power bar 5, draw
6 releases are grabbed, removes and grasps 6 and joint 1.
The bottom is made up of wear-resisting steel plate, and the wear-resisting steel plate is made up of the chemical composition of following percentage by weight：C
0.1%, Si 0.1%, Mn 0.5%, Ti 0.8%, Zr 0.05%, Mo 0.3%, Cr 0.1%, Al 0.05%, Ca 0.003%, remaining
For Fe and inevitable impurity.
The manufacture method of the wear-resisting steel plate comprises the following steps：By above-mentioned chemical composition match smelt, it is cast, plus
Heat, rolling, cooling and tempering step, are produced；In the heating stepses, heating-up temperature is 1080 DEG C, is incubated 1h；The rolling step
In rapid, roughing temperature is 1000 DEG C, and final rolling temperature is 820 DEG C；In the cooling step, using cooling by water to 400 DEG C it is empty again
It is cooled to room temperature, 30 DEG C/s of cooling by water speed；In the tempering step, heating-up temperature is 150 DEG C, is incubated 3h.
Embodiment 2
The present embodiment transformer SF6Gas test fixture structure is substantially the same manner as Example 1, and something in common is not repeated,
Somewhat different is：
The bottom is made up of wear-resisting steel plate, and the wear-resisting steel plate is made up of the chemical composition of following percentage by weight：C
0.13%, Si 0.2%, Mn 0.6%, Ti 0.9%, Zr 0.08%, Ni 0.05%, Mo 0.4%, Cr 0.15%, Al 0.06%, Ca
0.003%, remaining is Fe and inevitable impurity.
The manufacture method of the wear-resisting steel plate comprises the following steps：By above-mentioned chemical composition match smelt, it is cast, plus
Heat, rolling, cooling and tempering step, are produced；In the heating stepses, heating-up temperature is 1100 DEG C, is incubated 2h；The rolling step
In rapid, roughing temperature is 1000 DEG C, and final rolling temperature is 900 DEG C；In the cooling step, using cooling by water to 400 DEG C it is empty again
It is cooled to room temperature, 20 DEG C/s of cooling by water speed；In the tempering step, heating-up temperature is 400 DEG C, is incubated 2h.
Embodiment 3
The present embodiment transformer SF6Gas test fixture structure is substantially the same manner as Example 1, and something in common is not repeated,
Somewhat different is：
The bottom is made up of wear-resisting steel plate, and the wear-resisting steel plate is made up of the chemical composition of following percentage by weight：C 0.2%,
Si 0.2%, Mn 0.7%, Ti 0.95%, Zr 0.1%, Ni 0.06%, Mo 0.43%, Cr 0.2%, Al 0.07%, Ca
0.004%, V 0.01%, remaining is Fe and inevitable impurity.
The manufacture method of the wear-resisting steel plate comprises the following steps：By above-mentioned chemical composition match smelt, it is cast, plus
Heat, rolling, cooling and tempering step, are produced；In the heating stepses, heating-up temperature is 1300 DEG C, is incubated 0.5h；The rolling
In step, roughing temperature is 1250 DEG C, and final rolling temperature is 950 DEG C；In the cooling step, using cooling by water to 500 DEG C again
It is air-cooled to room temperature, 30 DEG C/s of cooling by water speed；In the tempering step, heating-up temperature is 400 DEG C, is incubated 1h.
Embodiment 4
The present embodiment transformer SF6Gas test fixture structure is substantially the same manner as Example 1, and something in common is not repeated,
Somewhat different is：
The bottom is made up of wear-resisting steel plate, and the wear-resisting steel plate is made up of the chemical composition of following percentage by weight：C
0.22%, Si 0.25%, Mn 0.8%, Ti 1.0%, Zr 0.15%, Ni 0.1%, Mo 0.45%, Cr 0.2%, Al 0.07%, Ca
0.004%, V 0.02%, remaining is Fe and inevitable impurity.
The manufacture method of the wear-resisting steel plate comprises the following steps：By above-mentioned chemical composition match smelt, it is cast, plus
Heat, rolling, cooling and tempering step, are produced；In the heating stepses, heating-up temperature is 1300 DEG C, is incubated 1h；The rolling step
In rapid, roughing temperature is 1250 DEG C, and final rolling temperature is 900 DEG C；In the cooling step, using cooling by water to 300 DEG C it is empty again
It is cooled to room temperature, 20 DEG C/s of cooling by water speed；In the tempering step, heating-up temperature is 200 DEG C, is incubated 3h.
Embodiment 5
The present embodiment transformer SF6Gas test fixture structure is substantially the same manner as Example 1, and something in common is not repeated,
Somewhat different is：
The bottom is made up of wear-resisting steel plate, and the wear-resisting steel plate is made up of the chemical composition of following percentage by weight：C
0.25%, Si 0.25%, Mn 0.8%, Ti 1.1%, Zr 0.2%, Ni 0.12%, Mo 0.5%, Cr 0.25%, Al 0.07%, Ca
0.004%, V 0.025%, remaining is Fe and inevitable impurity.
The manufacture method of the wear-resisting steel plate comprises the following steps：By above-mentioned chemical composition match smelt, it is cast, plus
Heat, rolling, cooling and tempering step, are produced；In the heating stepses, heating-up temperature is 1200 DEG C, is incubated 1.5h；The rolling
In step, roughing temperature is 1100 DEG C, and final rolling temperature is 900 DEG C；In the cooling step, using cooling by water to 300 DEG C again
It is air-cooled to room temperature, 20 DEG C/s of cooling by water speed；In the tempering step, heating-up temperature is 200 DEG C, is incubated 3h.
Embodiment 6
The present embodiment transformer SF6Gas test fixture structure is substantially the same manner as Example 1, and something in common is not repeated,
Somewhat different is：
The bottom is made up of wear-resisting steel plate, and the wear-resisting steel plate is made up of the chemical composition of following percentage by weight：C 0.3%,
Si 0.3%, Mn 0.85%, Ti 1.2%, Zr 0.2%, Ni 0.15%, Mo 0.52%, Cr 0.3%, Al 0.08%, Ca
0.004%, V 0.03%, remaining is Fe and inevitable impurity.
The manufacture method of the wear-resisting steel plate comprises the following steps：By above-mentioned chemical composition match smelt, it is cast, plus
Heat, rolling, cooling and tempering step, are produced；In the heating stepses, heating-up temperature is 1250 DEG C, is incubated 2h；The rolling step
In rapid, roughing temperature is 1200 DEG C, and final rolling temperature is 950 DEG C；In the cooling step, using cooling by water to 450 DEG C it is empty again
It is cooled to room temperature, 30 DEG C/s of cooling by water speed；In the tempering step, heating-up temperature is 150 DEG C, is incubated 3h.
Embodiment 7
The present embodiment transformer SF6Gas test fixture structure is substantially the same manner as Example 1, and something in common is not repeated,
Somewhat different is：
The bottom is made up of wear-resisting steel plate, and the wear-resisting steel plate is made up of the chemical composition of following percentage by weight：C
0.31%, Si 0.4%, Mn 0.9%, Ti 1.4%, Zr 0.25%, Ni 0.18%, Mo 0.6%, Cr 0.35%, Al 0.09%, Ca
0.005%, V 0.04%, remaining is Fe and inevitable impurity.
The manufacture method of the wear-resisting steel plate comprises the following steps：By above-mentioned chemical composition match smelt, it is cast, plus
Heat, rolling, cooling and tempering step, are produced；In the heating stepses, heating-up temperature is 1250 DEG C, is incubated 1h；The rolling step
In rapid, roughing temperature is 1050 DEG C, and final rolling temperature is 850 DEG C；In the cooling step, using cooling by water to 500 DEG C it is empty again
It is cooled to room temperature, 20 DEG C/s of cooling by water speed；In the tempering step, heating-up temperature is 400 DEG C, is incubated 2h.
Embodiment 8
The present embodiment transformer SF6Gas test fixture structure is substantially the same manner as Example 1, and something in common is not repeated,
Somewhat different is：
The bottom is made up of wear-resisting steel plate, and the wear-resisting steel plate is made up of the chemical composition of following percentage by weight：C
0.35%, Si 0.5%, Mn 1.0%, Ti 1.5%, Zr 0.3%, Ni 0.2%, Mo 0.6%, Cr 0.45%, Al 0.1%, Ca
0.005%, V 0.05%, remaining is Fe and inevitable impurity.
The manufacture method of the wear-resisting steel plate comprises the following steps：By above-mentioned chemical composition match smelt, it is cast, plus
Heat, rolling, cooling and tempering step, are produced；In the heating stepses, heating-up temperature is 1150 DEG C, is incubated 2h；The rolling step
In rapid, roughing temperature is 1050 DEG C, and final rolling temperature is 950 DEG C；In the cooling step, using cooling by water to 400 DEG C it is empty again
It is cooled to room temperature, 20 DEG C/s of cooling by water speed；In the tempering step, heating-up temperature is 300 DEG C, is incubated 1h.
1-8 transformers of embodiment of the present invention SF6The top bucket bottom of gas test fixture carries out Mechanics Performance Testing,
Wherein abrasion test step is：Under room temperature condition, carried out on ML-100 grain-abrasion testing machines, during interception sample, order examination
Sample is processed into stepped cylindrical body by the axis of sample on request perpendicular to surface of steel plate, and part of detecting size is φ 4mm, card
It is φ 5mm to have retained part size.With the sand paper that granularity is 80 mesh, tested under the effect of 84N load.Sample exists after experiment
A helix is drawn on sand paper, the length of helix is calculated according to the starting of helix and termination radius, calculation formula is such as
Under：
S=π（r1 2- r2 2）/a
In above formula, r1For the start radius of helix, r2For the termination radius of helix, a is the amount of feeding of helix.It is real every time
Test to weigh three times and average, then calculate weightless, the wear rate of sample is represented with every meter of weightlessness（mg/m）, the results are shown in Table 1.
The 1-8 bottom wear-resisting steel plate mechanical properties of the embodiment of the present invention of table 1
As shown in Table 1,1-8 of the embodiment of the present invention pushes up bucket bottom wear-resisting steel plate hardness 390-422HB, and hardness is high；Tensile strength
1161-1325MPa, intensity is high；Elongation percentage 14-18%, good toughness；- 40 DEG C of ballistic work 61-92J, impact resistance is good；Wear rate≤
13.02mg/m, wear rate is low, and anti-wear performance is excellent.
Claims (7)
1. a kind of transformer SF6Gas test fixture, it is characterised in that including joint, top bucket, cross bar, screw mandrel, by means of power
Bar and grasp, joint one end connecting detection pipe, the top bucket upper end sets opening, the top bucket lower end sets bottom, institute
State joint connecting detection pipe one end to be sleeved in the opening, set centre bore and some circumferences to be distributed in center on the bottom
Set what is matched with the screw mandrel in the middle part of the detection pore in hole, the detection pipe one of therethrough detection pore, the cross bar
Screwed hole, the screw mandrel top is in coniform, and the wire rod thread is connected in screwed hole, the screw mandrel top withstand on it is described in
In heart hole, the diameter of the centre bore is less than the diameter of screw mandrel, and the end of the screw mandrel, which is set, borrows power bar, the two ends of the cross bar
It is respectively provided with and grasps.
2. transformer SF according to claim 16Gas test fixture, it is characterised in that the detection pore is set
Put three.
3. transformer SF according to claim 16Gas test fixture, it is characterised in that described one end grasped
Open up the fixing hole matched with the cross bar, described to grasp the other end L-shaped.
4. transformer SF according to claim 16Gas test fixture, it is characterised in that the length of the top bucket
≥75mm。
5. transformer SF according to claim 16Gas test fixture, it is characterised in that the bottom is by wear-resisting
Steel plate is made.
6. transformer SF according to claim 56Gas test fixture, it is characterised in that the wear-resisting steel plate by
The chemical composition of following percentage by weight is made：C 0.1-0.35%, Si 0.1-0.5%, Mn 0.5-1.0%, Ti 0.8-1.5%,
Zr 0.05-0.3%, Ni 0-0.2%, Mo 0.3-0.6%, Cr 0.1-0.45%, Al 0.05-0.1%, Ca 0.003-0.005%,
V 0-0.05%, remaining is Fe and inevitable impurity.
7. transformer SF according to claim 66Gas test fixture, it is characterised in that the wear-resisting steel plate
Manufacture method comprises the following steps：Match and smelt by the chemical composition, cast, heating, rolling, cooling and tempering step,
Produce；In the heating stepses, heating-up temperature is 1080-1300 DEG C, is incubated 0.5-2h；In the milling step, roughing temperature
For 1000-1250 DEG C, final rolling temperature is 820-950 DEG C；In the cooling step, using cooling by water to≤500 DEG C of air coolings again
To room temperature, cooling by water speed >=20 DEG C/s；In the tempering step, heating-up temperature is 150-400 DEG C, is incubated 1-3h.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710587607.8A CN107290488A (en) | 2017-07-18 | 2017-07-18 | Transformer SF6Gas test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710587607.8A CN107290488A (en) | 2017-07-18 | 2017-07-18 | Transformer SF6Gas test fixture |
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| CN107290488A true CN107290488A (en) | 2017-10-24 |
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ID=60101067
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| CN201710587607.8A Pending CN107290488A (en) | 2017-07-18 | 2017-07-18 | Transformer SF6Gas test fixture |
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| CN110530687A (en) * | 2019-09-18 | 2019-12-03 | 国网山东省电力公司莱芜供电公司 | A kind of SF6 gas-detecting device |
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