CN208673856U - A kind of external box type metal expanding device - Google Patents

Abstract

The utility model relates to high voltage oil immersion field of electrical equipment, a kind of external box type metal expanding device, outer skeleton and inner frame are ring structure, one inner frame is set between two neighboring outer skeleton, so that outer skeleton and inner frame form the laminated construction of concentric setting, ripple box is thin-walled round pie can, the both ends of the surface of ripple box are equipped with expansion ripple, ripple box is arranged between two neighboring outer skeleton, ripple box edge is clamped by outer skeleton and inner frame, union first end connection ripple box is simultaneously connected to ripple box inside, second end is the sealing male connector docked with fuel tank connector, the head face hump or indent of ripple box ripple box when compensating.This metal expander limits the position of ripple box by outer skeleton and inner frame, ripple box is connected to by union with sealing male connector with fuel tank internal, when ripple box plays compensating action, ripple box passes through the ripple contraction distortion of upper and lower end faces, so that the volume change inside ripple box, to realize pressure compensation.

Description

A kind of external box type metal expanding device

Technical field

The utility model relates to power high voltage equipment field, especially a kind of external-expander of high-voltage product.

Background technique

Metal expander is widely used in high voltage oil immersion power equipment, and usage mode is divided into external and built-in, external What formula metal expander was almost unable to satisfy high-voltage product vacuumizes requirement, need to will be packed into outside high-voltage product after expander.This Sample is easy the oil liquid exposure of high-voltage product in air.It is more demanding for high-voltage product device security.

Utility model content

To solve the above problems, the utility model provides a kind of external box type metal expanding device, feature is operating pressure The features such as small, leakproofness realizes that the independent of product vacuumizes, independent oiling.

In order to achieve the above purposes, the technical solution adopted by the utility model is:

A kind of external box type metal expanding device, including at least two outer skeletons, at least one inner frame, at least one ripple An inner frame is arranged wherein the dermoskeleton frame and inner frame are ring structure in box and union between two neighboring outer skeleton, So that outer skeleton and inner frame form the laminated construction of concentric setting, the spacing of two neighboring outer skeleton is fixed, the ripple Box is thin-walled round pie can, and the both ends of the surface of ripple box are equipped with expansion ripple, the setting of ripple box two neighboring outer skeleton it Between, ripple box edge is clamped by outer skeleton and inner frame, the union first end connect ripple box and in ripple box Portion's connection, second end is the sealing male connector docked with fuel tank connector, and the end face of ripple box ripple box when compensating is convex Rise or indent.

Preferably, the end that the union is connect with ripple box is copper inner connection tube.

Preferably, the union extends to ripple box axle center line position by ripple box edge along ripple box radius.

Preferably, the sealing male connector is globe joint made of copper, the fuel tank connector is G type nut.

Preferably, the external box type metal expanding device further includes the centrosymmetric installation group that its surrounding is arranged in Part, the mounting assembly include vertical plate, rubber pad and screw and nut, are set on the vertical plate there are two through-hole, are set on outer skeleton There are two mounting hole corresponding with through-hole, the outer skeleton is connected by screw and nut with vertical plate to limit two neighboring dermoskeleton The relative distance of frame.

Preferably, the lower end of the vertical plate has for external box type metal expanding device to be fixed on top of oil-tank Through-hole.

Preferably, the cross section of the outer skeleton is U-typed structure.

Preferably, the edge of the outer skeleton seamlessly transits.

Preferably, the inner frame include axially extending annular body and along annular body upper and lower ends towards The interior wall extension of interior extension, the angle between the interior wall extension and annular body less than 90 ° and are greater than 60 °.

Preferably, the annular body and the smooth transition of interior wall extension junction.

Using the beneficial effects of the utility model are:

This metal expander limits the position of ripple box by outer skeleton and inner frame, by union and seals male connector for wave Line box is connected to fuel tank internal, plays the role of compensation, and when ripple box plays compensating action, ripple box passes through upper and lower end faces Ripple contraction distortion so that the volume change inside ripple box, to realize pressure compensation.

The inner frame of this metal expander passes through the bending inwardly of interior wall extension and interior wall extension and annular body Between angle design so that ripple box internal pressure be negative pressure when, interior wall extension will not be to the upper and lower end faces of ripple box It abuts, and then will not concentrate because of external force stress causes inner frame to damage ripple box.

Detailed description of the invention

Fig. 1 is the external box type metal expanding device overall structure diagram of the utility model.

Fig. 2 is the external box type metal expanding device use state sectional view of the utility model.

Fig. 3 is the portion A partial enlarged view in Fig. 2.

Fig. 4 is the portion B partial enlarged view in Fig. 2.

Appended drawing reference includes:

1- ripple box, 2- union, 3- seal male connector, and 4- seals female, and 5- inner connection tube, 6- inner frame, 61- is interior to be extended Wall, the outer skeleton of 7-, 8- vertical plate, 9- rubber pad, 10- connection component, 11- fuel tank connector, 12- fuel tank cap.

Specific embodiment

The utility model is described in detail below in conjunction with attached drawing.

Embodiment 1

As Figure 1-Figure 4, the present embodiment provides a kind of external box type metal expanding device, including at least two outer skeletons 7, At least one inner frame 6, at least one ripple box 1 and union 2, wherein outer skeleton 7 and inner frame 6 are ring structure, it is adjacent One inner frame 6 is set between two outer skeletons 7, so that outer skeleton 7 and inner frame 6 form the laminated construction of concentric setting, Ripple box 1 is thin-walled round pie can, and the both ends of the surface of ripple box 1 are equipped with expansion ripple, and the setting of ripple box 1 is two neighboring outer Between skeleton 7,1 edge of ripple box is clamped by outer skeleton 7 and inner frame 6, and 2 first end of union connects ripple box 1 and and ripple It is connected to inside box 1, second end is the sealing male connector 3 docked with fuel tank connector 11, the ripple box 1 when compensating of ripple box 1 Head face hump or indent.

Specifically, as shown in Figure 1, this metal expander is mounted on above fuel tank using external, with two outer 7 Hes of skeleton For one ripple box 1, outer skeleton 7 is cyclic structure, clamps an inner frame 6, two outer skeletons 7 among two outer skeletons 7 It is stacked with an inner frame 6 using sandwich structure, ripple box 1 is thin-walled round pie, and ripple box 1 is placed on two outer skeletons 7 Between, inner frame 6 is placed on inside ripple box 1, the height of inner frame 6 and thickness inside ripple box 1 always, inner frame 6 Effect is to support the outer circumferential walls for the box 1 that ripples.

External box type metal expanding device further includes the centrosymmetric mounting assembly that its surrounding is arranged in, the mounting assembly packet Include vertical plate 8, rubber pad 9 and screw and nut, screw and nut, gasket are connection component 10, set on vertical plate 8 there are two Through-hole, sets that there are two mounting hole corresponding with through-hole, outer skeleton 7 and vertical plates 8 to be connected by screw and nut to limit on outer skeleton 7 Make the relative distance of two neighboring outer skeleton 7.Skeleton 7 outer in this way, the relative position between inner frame 6 and ripple box 1 is fixed.

As shown in Fig. 2, top of oil-tank has fuel tank cap 12, fuel tank cap 12 is made of hard metal material, tank tube connection Fuel tank internal, the outer end of tank tube are fuel tank connector 11.As shown in figure 3, when using this metal expander, by fuel tank connector 11 On sealing female 4 and sealing male connector 3 dock, the installation of this metal expander can be completed, tank internal pressure increase when, Ripple box 1 is deformed by the ripple of upper and lower ends, so that ripple box 1 deforms, to realize pressure compensation.

This metal expander limits the position of ripple box 1 by outer skeleton 7 and inner frame 6, passes through union 2 and sealing male connector 3 are connected to ripple box 1 with fuel tank internal, play the role of compensation, and when ripple box 1 plays compensating action, ripple box 1 passes through upper The ripple contraction distortion of lower both ends of the surface, so that the volume change inside ripple box 1, to realize pressure compensation.

The end that union 2 is connect with ripple box 1 is copper inner connection tube 5, and expansion box is connect with small copper pipe using high silver soldering, high Phenomena such as silver soldering connects with good welding performance, avoids the occurrence of dry joint, solder skip is integrally superimposed outer skeleton 7 and assembles after welding, copper Connector is connect with union 2 using high silver soldering, and copper sleeve compresses copper sleeve using G nut with fuel tank jointing and fuel tank connector 11 is close Envelope.It is globe joint that high silver soldering, which connects copper sleeve, guarantees that good leakproofness, union 2 are that high silver soldering connects with small copper pipe.Realize product Individually vacuumize, independent oiling.

As shown in Figure 1, union 2 extends to 1 axle center line position of ripple box by 1 edge of ripple box along 1 radius of ripple box, side Just it is docked with fuel tank connector 11.

Sealing male connector 3 is globe joint made of copper, and fuel tank connector 11 is G type nut, and sealing effect is good, assembly side Just.

The lower end of vertical plate 8 has the through-hole for external box type metal expanding device to be fixed on to top of oil-tank, in order to incite somebody to action This metal expander is mounted on top of oil-tank.

As shown in figure 4, the cross section of outer skeleton 7 avoids outer skeleton 7 with good support performance for U-typed structure Lower end cut the end face of bad ripple box 1.The edge of outer skeleton 7 seamlessly transits, and prevents plowing from ripple box 1.

Inner frame 6 includes axially extending annular body and the interior extension to extend internally along annular body upper and lower end faces Wall 61, the angle between the interior wall extension 61 and annular body less than 90 ° and are greater than 60 °.

The inner frame 6 of this metal expander passes through the bending inwardly of interior wall extension 61 and interior wall extension 61 and ring Angle design between shape main body, so that ripple box 1 is when internal pressure is negative pressure, interior wall extension 61 will not be to ripple box 1 Upper and lower end faces abut, and then will not concentrate because of external force stress causes inner frame 6 to damage ripple box 1.

Annular body and the smooth transition of 61 junction of interior wall extension, avoid inner frame 6 from cutting the end face of bad ripple box 1.

Embodiment 2

Metal expander in the present embodiment is similar with the metal expander in embodiment 1, distinguishes in this present embodiment Metal expander use multiple-layer stacked form.

For example, the outer skeleton 7 in the present embodiment has 4, there are three the correspondences of inner frame 6, and corresponding ripple box 1 also has three It is a, it is equipped with an inner connection tube 5 on each ripple box 1, then multiple connection inner tubes are interconnected by union 2, in this way Multiple ripple boxes 1 play the role of balancing pressure simultaneously.

It should be understood that outer skeleton 7, inner frame 6, ripple box 1 can be any multilayered structure.

The above content is only the preferred embodiment of the utility model, for those of ordinary skill in the art, according to this reality It, in specific embodiments and applications can be with many changes may be made, as long as these variations are without departing from this with novel thought The design of utility model, belongs to the protection scope of the utility model.

Claims (10)

1. a kind of external box type metal expanding device, it is characterised in that: including at least two outer skeletons, at least one inner frame, extremely A few ripple box and union are arranged between two neighboring outer skeleton wherein the dermoskeleton frame and inner frame are ring structure One inner frame, so that outer skeleton and inner frame form the laminated construction of concentric setting, the spacing of two neighboring outer skeleton is solid Fixed, the ripple box is thin-walled round pie can, and the both ends of the surface of ripple box are equipped with expansion ripple, and ripple box is arranged adjacent two Between a outer skeleton, ripple box edge is clamped by outer skeleton and inner frame, and the union first end connection ripple box is simultaneously It is connected to inside ripple box, second end is the sealing male connector docked with fuel tank connector, ripple box ripple when compensating The head face hump or indent of box.

2. external box type metal expanding device according to claim 1, it is characterised in that: the union is connect with ripple box End is copper inner connection tube.

3. external box type metal expanding device according to claim 1, it is characterised in that: the union is along ripple box radius Ripple box axle center line position is extended to by ripple box edge.

4. external box type metal expanding device according to claim 1, it is characterised in that: the sealing male connector is ball made of copper Shape connector, the fuel tank connector are G type nut.

5. external box type metal expanding device according to claim 1, it is characterised in that: the external box type metal expanding device It further include the centrosymmetric mounting assembly that its surrounding is set, which includes vertical plate, rubber pad and screw and spiral shell Mother sets on the vertical plate there are two through-hole, sets that there are two mounting hole corresponding with through-hole, the outer skeleton and vertical plates on outer skeleton It is connected by screw and nut to limit the relative distance of two neighboring outer skeleton.

6. external box type metal expanding device according to claim 5, it is characterised in that: the lower end of the vertical plate, which has, to be used for External box type metal expanding device is fixed on to the through-hole of top of oil-tank.

7. external box type metal expanding device according to claim 1, it is characterised in that: the cross section of the outer skeleton is U-typed structure.

8. external box type metal expanding device according to claim 7, it is characterised in that: the edge of the outer skeleton is smooth Transition.

9. external box type metal expanding device according to claim 1-8, it is characterised in that: the inner frame includes Axially extending annular body and the interior wall extension to extend internally along annular body upper and lower end faces, the interior wall extension and annular Angle between main body less than 90 ° and is greater than 60 °.

10. external box type metal expanding device according to claim 9, it is characterised in that: the annular body and interior extension The smooth transition of wall junction.