CN216487605U - Pressure monitoring type built-in expander - Google Patents

Abstract

The utility model discloses a pressure monitoring type built-in expander, which comprises a corrugated expander main body, wherein an upper cover plate and a lower cover plate are respectively arranged at the upper end and the lower end of the corrugated expander main body, a fixed seat is arranged at the middle part of the upper cover plate, a threaded air hole is arranged at the middle part of the lower side wall of the fixed seat, four notches are symmetrically arranged at the upper end of the side wall of the fixed seat, a conductive bolt is connected with the middle of each notch in a threaded manner, a conductive elastic sheet is arranged at the outer side of the conductive bolt and in each notch, the conductive elastic sheet at the rear side is upwards inclined, the conductive elastic sheet at the front side is downwards inclined, an alarm base is symmetrically arranged at the upper end of the side wall of the fixed seat in the front-back manner, the conductive bolt at the rear side is electrically connected with the alarm base at the rear side, the conductive bolt at the front side is electrically connected with the alarm base at the front side, the utility model can carry out pressure monitoring on the expander, when the temperature is too high or too low, a prompt alarm sound can be sent out.

Description

Pressure monitoring type built-in expander

Technical Field

The utility model relates to the technical field of expanders, in particular to a pressure monitoring type built-in expander.

Background

The expander is a container with variable volume, is used for compensating volume change of transformer oil caused by temperature change in a ring-sealed oil-immersed transformer and a capacitor, can keep internal pressure basically unchanged when the transformer normally operates, plays a role in protecting various oil-immersed transformers and capacitors, can isolate the transformer oil in a product from external air, and prevents the transformer oil from being affected with damp, aged and deteriorated.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a pressure monitoring type internal expander to solve the problems of the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: a pressure monitoring type built-in expander comprises a corrugated expander main body, wherein an upper cover plate and a lower cover plate are respectively arranged at the upper end and the lower end of the corrugated expander main body, a fixed seat is arranged in the middle of the upper cover plate, a threaded air hole is formed in the middle of the lower side wall of the fixed seat, four notches are symmetrically formed in the upper end of the side wall of the fixed seat in the central symmetry manner, a conductive bolt is connected with a thread in each notch in a threaded manner, a conductive elastic sheet is arranged on the outer side of the conductive bolt in each notch, the conductive elastic sheet on the rear side is inclined upwards, the conductive elastic sheet on the front side is inclined downwards, alarm bases are symmetrically formed in the front and the rear of the upper end of the side wall of the fixed seat, the conductive bolt on the rear side is electrically connected with the alarm bases on the rear side, the conductive bolt on the front side is electrically connected with the alarm bases on the front side, a first alarm is arranged in the alarm bases on the rear side, the alarm comprises a front side, a second alarm is arranged in an alarm base, a threaded cylinder is arranged on the upper surface of a lower cover plate, a round rod is connected in the threaded cylinder in a threaded mode, a battery base is arranged at the upper end of the round rod, first conductive semi-rings are symmetrically arranged on the upper portion of the outer side wall of the round rod in the bilateral mode, second conductive semi-rings are symmetrically arranged on the lower portion of the outer side wall of the round rod in the bilateral mode, a lead is arranged between the first conductive semi-rings and the second conductive semi-rings in the up-down opposite mode, and the lead is electrically connected with the battery base.

Preferably, the outer diameter of the round rod is smaller than the inner diameter of the thread vent hole.

Compared with the prior art, the utility model has the beneficial effects that: the utility model provides a built-in expander of pressure monitoring formula, the relevant part of pressure monitoring all can be installed and dismantle, be convenient for to the maintenance and the evacuation work of device, the round bar that together reciprocates through the apron down with the lower cover is with the temperature pressure condition of demonstration expander, the second siren work when the high temperature, the first siren work when the low temperature is crossed, in time handle with suggestion staff's temperature anomaly, first siren and second siren adopt the siren that takes place the difference, in order to distinguish the temperature condition when sending out alarm suggestion sound.

Drawings

Fig. 1 is a schematic front view of a cross-sectional structure according to the present invention.

Fig. 2 is a schematic top view of the battery base removed according to the present invention.

Fig. 3 is a schematic structural view of the conductive elastic sheet of the present invention.

In the figure: 1. a bellows expander body; 2. an upper cover plate; 3. a lower cover plate; 4. a fixed seat; 5. thread air holes; 6. opening the gap; 7. a conductive bolt; 8. a conductive spring plate; 9. a first alarm; 10. a second alarm; 11. a threaded barrel; 12. a round bar; 13. a battery base; 14. a first conductive half ring; 15. a second conductive half-ring; 16. and (4) conducting wires.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a pressure monitoring type built-in expander comprises a corrugated expander body 1, wherein an upper cover plate 2 and a lower cover plate 3 are respectively arranged at the upper end and the lower end of the corrugated expander body 1, the upper cover plate 2 and the lower cover plate 3 are fixed on the corrugated expander body 1 to seal the upper end and the lower end of the corrugated expander, a round hole for installing a fixed seat 4 is formed in the middle of the upper cover plate 2, the fixed seat 4 is arranged in the middle of the upper cover plate 2, the fixed seat 4 is fixed on the upper cover plate 2, the upper surface of the fixed seat is inwards recessed, a threaded vent hole 5 is formed in the middle of the lower side wall of the fixed seat 4, the threaded vent hole 5 penetrates through the fixed seat 4 to enable the internal space of the corrugated expander body 1 to be communicated with the external air, meanwhile, an internal thread is formed on the threaded vent hole 5, and the screw which is matched with each other and is provided with a sealing ring is installed in the threaded vent hole 5 to seal the internal space of the corrugated expander body 1, when the vacuum pumping work is carried out, the vacuum pumping work needs to be carried out, four notches 6 are symmetrically arranged at the center of the upper end of the side wall of the fixed seat 4, a conductive bolt 7 is connected in the notch 6 in a threaded manner, a conductive elastic sheet 8 is arranged at the outer side of the conductive bolt 7 in the notch 6, the conductive elastic sheet 8 at the rear side inclines upwards, the conductive elastic sheet 8 at the front side inclines downwards, the four notches 6 are arranged on the upper surface of the fixed seat 4, a threaded hole for accommodating the conductive bolt 7 is formed at the position, corresponding to the notch 6, of the fixed seat 4, the conductive bolt 7 penetrates through the conductive elastic sheet 8, the conductive elastic sheet 8 is fixed in the notch 6, one end of the conductive elastic sheet 8 is tightly attached to the round rod 12, the bending directions of the front and rear groups of conductive elastic sheets 8 are different, the conductive elastic sheet 8 at the rear side faces upwards so as to be capable of firstly contacting with the first conductive semi-ring 14, and the conductive elastic sheet 8 at the front side faces downwards so as to be capable of firstly contacting with the second conductive semi-ring 15, alarm bases are symmetrically arranged at the front and the back of the upper end of the side wall of the fixed seat 4, the conductive bolt 7 at the rear side is electrically connected with the alarm base at the rear side, the conductive bolt 7 at the front side is electrically connected with the alarm base at the front side, a first alarm 9 is arranged in the alarm base at the rear side, a second alarm 10 is arranged in the alarm base at the front side, the alarm base is arranged on the surface of the fixed seat 4, the alarm base at the same side is electrically connected with the conductive bolt 7 or the conductive elastic sheet 8, the alarms are arranged and fixed in the alarm bases, the alarms and the alarm bases are mutually matched and electrically connected, the first alarm 9 and the second alarm 10 generate different sounds to distinguish whether the oil temperature is too high or too low when the alarm is sent out, a threaded barrel 11 is arranged on the upper surface of the lower cover plate 3, and a round rod 12 is in the threaded barrel 11, the screw cylinder 11 is fixed on the lower cover plate 3, the inner side is formed with an internal thread, the lower part of the outer side wall of the round rod 12 is formed with an external thread, the lower part of the outer side wall of the round rod 12 is fixed in the screw cylinder 11 by rotating, penetrates through the fixed seat 4 and is exposed out of the fixed seat 4, the lower cover plate 3 can move up and down by the expansion and contraction of the corrugated expander body 1 due to the fact that the upper cover plate 2 is fixed on an external equipment plane plate, the round rod 12 can move up and down relative to the fixed seat 4 along with the up and down movement of the lower cover plate, and further the degree of exposure of the round rod 12 and the fixed seat 4 is changed, the upper end of the round rod 12 is provided with a battery base 13, the upper part of the outer side wall of the round rod 12 is provided with a first conductive half ring 14 in a bilateral symmetry manner, the lower part of the outer side wall of the round rod 12 is provided with a second conductive half ring 15 in a bilateral symmetry manner, a lead 16 is arranged between the first conductive half ring 14 and the second conductive ring 15 which are opposite up and down, and the lead 16 is electrically connected with the battery base 13, the battery base 13 is fixed on the round bar 12 and can contain a battery, the wires 16 are arranged in the round bar 12, one wire 16 is electrically connected with the first conductive semi-ring 14 and the second conductive semi-ring 15 on the corresponding side and is electrically connected with one electrode of the battery base 13, no direct connection exists between the two wires 16, no direct connection exists between the first conductive semi-ring 14 and the second conductive semi-ring 15, when the conductive elastic sheet 8 contacts the conductive semi-rings, a loop can be formed between a power supply and an alarm, and the alarm can give out an alarm prompt sound when working.

Specifically, the outer diameter of the round rod 12 is smaller than the inner diameter of the threaded air hole 5, so that the round rod 12 and the conductive semi-ring can pass through the fixed seat 4.

The working principle is as follows: after the device is arranged on an external capacitive voltage transformer cover plate, if vacuumizing work is required, a threaded air hole 5 on a fixed seat 4 is blocked by a bolt with a sealing ring, the bolt is taken down after preparation is finished, a round rod 12 penetrates through the threaded air hole 5 of the fixed seat 4 and extends into a threaded cylinder 11 to be screwed into the threaded cylinder 11 for fixation, a battery is put into a battery base 13, a conductive elastic sheet 8 is fixed on a gap 6 through a conductive bolt 7, a corrugated expander main body 1 normally works, when the external temperature rises, the volume of oil is increased, the compressed internal space of the corrugated expander main body 1 is reduced, a lower cover plate 3 moves upwards, the round rod 12 moves upwards relative to the fixed seat 4, when the temperature is overhigh, the left conductive elastic sheet 8 and the right conductive elastic sheet 8 which bend downwards on the front side respectively contact with a left conductive semi-ring 15 and a right conductive semi-ring 15, the battery and the second conductive semi-ring 15 are electrically connected with the lead 16, the second alarm 10 is electrically connected with the two conductive elastic sheets 8 on the front side, so that a loop is formed between the battery and the second alarm 10, the second alarm 10 works to give an alarm sound for prompting that the ambient temperature of the oil is overhigh at the moment, when the external temperature is lowered, the volume of the oil is reduced, the expanded internal space of the corrugated expander main body 1 is enlarged, the lower cover plate 3 moves downwards, the round rod 12 moves downwards relative to the fixed seat 4, when the temperature is overlow, the two conductive elastic sheets 8 which are bent upwards on the left and right on the rear side respectively contact the left and right first conductive semi-rings 14, the battery is electrically connected with the first conductive semi-ring 14 and the lead 16, the first alarm 9 is electrically connected with the two conductive elastic sheets 8 on the rear side, so that a loop is formed between the battery and the first alarm 9, and the first alarm 9 works to give an alarm sound, for indicating that the ambient temperature of the oil is too low, the first alarm 9 and the second alarm 10 are different alarms to distinguish the temperature condition when the alarm indication sound is given.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (2)

1. A pressure monitoring type built-in expander comprises a corrugated expander body (1), and is characterized in that: an upper cover plate (2) and a lower cover plate (3) are respectively arranged at the upper end and the lower end of the corrugated expander main body (1), a fixing seat (4) is arranged at the middle part of the upper cover plate (2), a threaded air hole (5) is formed in the middle part of the lower side wall of the fixing seat (4), four notches (6) are symmetrically formed in the center of the upper end of the side wall of the fixing seat (4), a conductive bolt (7) is connected with the middle part of each notch (6) in a threaded manner, a conductive elastic sheet (8) is arranged on the outer side of the conductive bolt (7) in each notch (6), the conductive elastic sheet (8) on the rear side inclines upwards, the conductive elastic sheet (8) on the front side inclines downwards, alarm bases are symmetrically formed in the front and back of the upper end of the side wall of the fixing seat (4), the conductive bolt (7) on the rear side is electrically connected with the alarm bases, the conductive bolt (7) on the front side is electrically connected with the alarm bases on the front side, the alarm device comprises a rear side and a front side, and is characterized in that a first alarm (9) is arranged in the alarm device base, a second alarm (10) is arranged in the alarm device base, a threaded cylinder (11) is arranged on the upper surface of a lower cover plate (3), a round rod (12) is in threaded connection in the threaded cylinder (11), a battery base (13) is arranged at the upper end of the round rod (12), first conductive semi-rings (14) are arranged on the upper portion of the outer side wall of the round rod (12) in a bilateral symmetry mode, second conductive semi-rings (15) are arranged on the lower portion of the outer side wall of the round rod (12) in a bilateral symmetry mode, a lead (16) is arranged between the first conductive semi-rings (14) and the second conductive semi-rings (15) in an up-down opposite mode, and the lead (16) is electrically connected with the battery base (13).

2. A pressure monitoring internal expander as claimed in claim 1, wherein: the outer diameter of the round rod (12) is smaller than the inner diameter of the thread vent hole (5).

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