CN219759309U - Thermal explosion type separator - Google Patents

Abstract

The utility model discloses a thermal explosion type detacher which comprises a detacher shell, a detachment positioning rod, a thermal explosion tube and an inner metal piece, wherein an installation cavity with an opening at the lower end is arranged on the detacher shell; still include explosion-proof retaining ring and plastic ring, the plastic ring sets up inside metalwork periphery to the plastic ring lower extreme is equipped with and extends to be used for forming the spacing limit flange of axial to lower clearance ring, and explosion-proof retaining ring installs in the open end department of installation cavity, and the upper end of explosion-proof retaining ring offsets tightly with the lower extreme of plastic ring. When the hot explosion pipe works, the utility model can prevent the inner metal part from being separated from the outer shell of the separator, thereby not only preventing the inner metal part from being lost, but also improving the driving safety.

Description

Thermal explosion type separator

Technical Field

The utility model relates to the technical field of lightning arresters, in particular to a directional splash-free thermal explosion type detacher for rolling stock.

Background

The disconnector is used as a matching product of the lightning arrester, is connected in series with the lightning arrester, can act to disconnect when the lightning arrester fails to be damaged, timely isolates the lightning arrester damaged by the failure from the system, gives out clear marks, ensures the normal operation of the system, and facilitates the searching of failure points and the maintenance and replacement of the lightning arrester. The separator is divided into a hot-melt separator and a hot-explosion separator according to the use principle and performance, and the hot-melt separator fuses the gold-containing fuse in the separator by utilizing the power frequency short-circuit current flowing through the failure lightning arrester so as to achieve the separation purpose. The thermal explosion type detacher utilizes the power frequency short-circuit current flowing through the failure lightning arrester to generate an electric arc in the detacher, and detonates the thermal explosion metal piece to achieve the purpose of detachment. The hot melt type lightning arrester has the defect of low separation speed, and all the hot explosion type separators are adopted in the domestic and foreign markets at present.

The utility model patent with the patent application number of CN20090029079. X discloses a thermal explosion type detacher of a lightning arrester, and when the thermal explosion tube works, because the bottom of the detacher is not provided with a limiting structure, metal parts in the detacher can be ejected from the bottom of the detacher, so that arc discharge can be formed, other high-voltage parts are damaged, the influence on a running vehicle can be caused, namely, two sides of the running vehicle meet, and the metal parts can be ejected to an outer vehicle, so that the thermal explosion type detacher is very dangerous.

Disclosure of Invention

The utility model aims to provide a thermal explosion type detacher, which can prevent an internal metal part from being detached from a detacher shell when a thermal explosion tube works, can prevent the internal metal part from being lost, has the effect of no splashing, and can enable a detachment positioning rod to fly out in an oriented manner, so that the driving safety is improved.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the thermal explosion type detacher comprises a detacher shell, a detachment positioning rod, a thermal explosion tube and an inner metal piece, wherein an installation cavity with an opening at the lower end is arranged on the detacher shell, the upper end of the detachment positioning rod is connected with the opening end of the installation cavity, the thermal explosion tube is arranged at one end of the detachment positioning rod, which corresponds to the installation cavity, the inner metal piece is arranged in the installation cavity, and the inner metal piece comprises an upper clearance ring, a lower clearance ring and an inner porcelain ring arranged between the upper clearance ring and the lower clearance ring; still include explosion-proof retaining ring and plastic ring, the plastic ring sets up inside metalwork periphery to the plastic ring lower extreme is equipped with and extends to the internal circumference and be used for constituting the spacing limit flange of axial to lower clearance ring, explosion-proof retaining ring installs the open end department of installation cavity, and the upper end of explosion-proof retaining ring offsets tightly with the lower extreme of plastic ring.

Through adopting above-mentioned technical scheme, the spacing collar of plastic collar holds up inside metalwork, sets up explosion-proof retaining ring in plastic collar lower extreme simultaneously, and explosion-proof retaining ring links together with the remover shell, and when hot blasting tube during operation, only can deviate from the locating lever, and inside metalwork can not break away from under the restriction of explosion-proof baffle, can not prevent not only that inside metalwork from losing, has the effect that does not have the splash, enables moreover and breaks away from the directional departure of locating lever, and then promotes driving safety.

The utility model is further characterized in that a thread groove is formed in the inner wall of the mounting cavity of the separator shell, and an external thread matched with the thread groove is arranged on the periphery of the explosion-proof retainer ring.

Through adopting above-mentioned technical scheme, adopt threaded connection's mode to link together explosion-proof retaining ring and disengager shell, not only simple to operate, firm in connection moreover can not break away from under the axial force effect to guarantee to break away from the installation cavity at the explosion-proof retaining ring of heat during pipe work can effectively block inside metalwork.

The utility model further provides that the upper end of the explosion-proof retainer ring is provided with an annular extension part, and the annular extension part surrounds the periphery of the plastic ring.

Through adopting above-mentioned technical scheme, not only can promote the effect of encircleing to the plastic ring, play better supporting role, can promote the fastness that explosion-proof retaining ring self was installed moreover.

The utility model is further arranged that the disengaging positioning rod is connected to the outer shell of the disengager through the sealant, and the disengaging positioning rod is also provided with an annular step for abutting against the back surface of the sealant.

Through adopting above-mentioned technical scheme, connection structure is simple reliable, and the hot pipe work of bursting, thereby annular step can outwards extrude the sealant and break away from the disengager shell smoothly.

The utility model is further arranged that an annular gap is arranged between the inner periphery of the explosion-proof retainer ring and the outer periphery of the separation positioning rod, and the annular gap is filled by the sealant.

Through adopting above-mentioned technical scheme, can further promote the fastness that breaks away from the locating lever installation, play insulating effect simultaneously.

The utility model is further arranged that the inner metal piece further comprises an outer porcelain ring, the outer porcelain ring is arranged on the outer circumferences of the upper clearance ring, the inner porcelain ring and the lower clearance ring, and the outer circumference of the outer porcelain ring is tightly attached to the inner circumference of the plastic ring.

Through adopting above-mentioned technical scheme, outer ceramic ring can play the effect of protection to the remover shell, avoids the hot pipe explosion during operation to break away from the remover shell by the burst.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

fig. 2 is a schematic view of the structure of the utility model after the detachment of the detachment positioning lever.

In the figure: 1. a decoupler housing; 2. disengaging the positioning rod; 3. a thermal explosion tube; 4. a mounting cavity; 5. an upper clearance ring; 6. a lower clearance ring; 7. an inner porcelain ring; 8. an explosion-proof retainer ring; 9. a plastic ring; 10. a limit flange; 11. a thread groove; 12. an external thread; 13. sealing glue; 14. an annular extension; 15. an annular step; 16. an annular gap; 17. an outer porcelain ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples: the thermal explosion type detacher as shown in fig. 1 and fig. 2 comprises a detacher shell 1, a detachment positioning rod 2, a thermal explosion tube 3 and an inner metal piece, wherein an installation cavity 4 with an opening at the lower end is arranged on the detacher shell 1, the upper end of the detachment positioning rod 2 is connected with the opening end of the installation cavity 4, the thermal explosion tube 3 is arranged at one end of the detachment positioning rod 2 corresponding to the installation cavity 4, the inner metal piece is arranged in the installation cavity 4, the inner metal piece comprises an upper clearance ring 5, a lower clearance ring 6 and an inner ceramic ring 7 arranged between the upper clearance ring 5 and the lower clearance ring 6, the upper clearance ring 5, the lower clearance ring 6 and the inner ceramic ring 7 are coaxially arranged, a discharge gap is formed between the upper clearance ring 5 and the lower clearance ring 6, and an arc generated by the discharge gap acts on the thermal explosion tube 3, so that the thermal explosion tube 3 acts rapidly. The separator further comprises an explosion-proof retainer ring 8 and a plastic ring 9, wherein the plastic ring 9 is arranged on the outer periphery of the inner metal piece, a limiting flange 10 which extends towards the inner periphery and is used for limiting the lower clearance ring 6 axially is arranged at the lower end of the plastic ring 9, namely, the limiting flange 10 is used for propping the inner metal piece against the inner end of the mounting cavity 4, the explosion-proof retainer ring 8 is mounted at the opening end of the mounting cavity 4, and the upper end of the explosion-proof retainer ring 8 is propped against the lower end of the plastic ring 9. The spacing ring of plastic collar holds up inside metalwork, sets up explosion-proof retaining ring 8 simultaneously at the plastic collar lower extreme, and explosion-proof retaining ring 8 links together with break away from ware shell 1, and when thermal explosion tube 3 during operation, only can deviate from locating lever 2, and inside metalwork can not break away from in the installation cavity 4 under the restriction of explosion-proof baffle, can not only prevent that inside metalwork from losing, has the effect that does not have the splash, enables moreover and breaks away from locating lever 2 orientation departure, and then promotes driving safety.

As shown in fig. 1, a thread groove 11 is formed in the inner wall of the installation cavity 4 of the separator housing 1, an external thread 12 matched with the thread groove 11 is formed on the periphery of the explosion-proof retainer ring 8, and after the explosion-proof retainer ring 8 is screwed, the plastic ring is tightly pressed and installed. The explosion-proof retainer ring 8 and the separator housing 1 are connected together in a threaded connection mode, so that the heat explosion-proof retainer ring is convenient to install, firm in connection and can not be separated under the action of axial force, and therefore the explosion-proof retainer ring 8 can effectively prevent internal metal parts from separating from the installation cavity 4 when the heat explosion pipe 3 works.

As shown in fig. 1, the upper end of the explosion-proof retainer ring 8 is provided with an annular extension 14, the annular extension 14 surrounds the periphery of the plastic ring 9, and the external thread 12 on the explosion-proof retainer ring 8 extends to the upper end of the annular extension 14, so that the annular extension 14 is also in threaded fit with the thread groove 11. The design not only can promote the surrounding effect to plastic ring 9, plays better supporting role, can promote the fastness that explosion-proof retaining ring 8 self was installed moreover.

As shown in fig. 1, the upper end of the explosion-proof retainer ring 8 is provided with an annular extension 14, and the annular extension 14 surrounds the outer periphery of the plastic ring 9. The connecting structure is simple and reliable, and when the thermal explosion tube 3 works, the annular step 15 can extrude the sealant 13 outwards so as to be smoothly separated from the outer shell 1 of the separator.

As shown in fig. 1, an annular gap 16 is provided between the inner periphery of the anti-explosion retainer ring 8 and the outer periphery of the release positioning rod 2, and the annular gap 16 is filled with the sealant 13. The design can further promote the fastness of breaking away from locating lever 2 installation, plays insulating effect simultaneously.

As shown in fig. 1, the inner metal piece further comprises an outer ceramic ring 17, wherein the outer ceramic ring 17 is arranged on the outer circumferences of the upper clearance ring 5, the inner ceramic ring 7 and the lower clearance ring 6, and the outer circumference of the outer ceramic ring 17 is tightly attached to the inner circumference of the plastic ring 9. The outer porcelain ring 17 has high hardness, can play a role in protecting the separator housing 1, and can prevent the separator housing 1 from being burst when the thermal explosion tube 3 works.

Claims (6)

1. The thermal explosion type detacher comprises a detacher shell (1), a detachment positioning rod (2), a thermal explosion tube (3) and an inner metal piece, wherein an installation cavity (4) with an opening at the lower end is arranged on the detacher shell (1), the upper end of the detachment positioning rod (2) is connected to the opening end of the installation cavity (4), the thermal explosion tube (3) is arranged at one end, corresponding to the detachment positioning rod (2), in the installation cavity (4), the inner metal piece is arranged in the installation cavity (4), and the inner metal piece comprises an upper clearance ring (5), a lower clearance ring (6) and an inner porcelain ring (7) arranged between the upper clearance ring (5) and the lower clearance ring (6); the method is characterized in that: still include explosion-proof retaining ring (8) and plastic ring (9), plastic ring (9) set up in inside metalwork periphery to plastic ring (9) lower extreme is equipped with inwards extends and is used for constituting spacing flange (10) of axial spacing to lower clearance ring (6), explosion-proof retaining ring (8) are installed the open end department of installation cavity (4) to the upper end of explosion-proof retaining ring (8) offsets tightly with plastic ring (9) lower extreme.

2. The thermal explosion decoupler as set forth in claim 1, wherein: the inner wall of the installation cavity (4) of the separator shell (1) is provided with a thread groove (11), and the periphery of the explosion-proof retainer ring (8) is provided with an external thread (12) matched with the thread groove (11).

3. The thermal explosion decoupler as set forth in claim 2, wherein: the upper end of the explosion-proof retainer ring (8) is provided with an annular extension part (14), and the annular extension part (14) surrounds the periphery of the plastic ring (9).

4. The thermal explosion decoupler as set forth in claim 1, wherein: the disengaging and positioning rod (2) is connected to the disengager shell (1) through the sealant (13), and the disengaging and positioning rod (2) is also provided with an annular step (15) which is used for propping against the back of the sealant (13).

5. The thermal explosion type detacher of claim 4, wherein: an annular gap (16) is arranged between the inner periphery of the explosion-proof retainer ring (8) and the outer periphery of the separation positioning rod (2), and the annular gap (16) is filled with the sealant (13).

6. The thermal explosion decoupler as set forth in claim 1, wherein: the inner metal piece further comprises an outer porcelain ring (17), the outer porcelain ring (17) is arranged on the outer periphery of the upper clearance ring (5), the inner porcelain ring (7) and the lower clearance ring (6), and the outer periphery of the outer porcelain ring (17) is tightly attached to the inner periphery of the plastic ring (9).