CN204345252U - Ring main unit gas-charging connection - Google Patents

Abstract

The inflatable joint of the ring network cabinet, the key is: including the inflatable interface and the inflatable nozzle, the inflatable interface is a sleeve structure, the inflatable mouth part that is clamped in the inflatable interface is the inner inflatable nozzle, and the inflatable nozzle is on the outside of the inflatable interface Part of it is an external inflation nozzle, the inner side of the inflation interface is provided with an internal thread, the external thread on the outside of the inner inflation nozzle and the internal thread form a thread fit, the top of the inner inflation nozzle is provided with an inflation port, and the outer periphery of the inflation port is set at a position lower than the inflation port. The sealing groove, the outer surface of the outer inflation nozzle is a pagoda surface, and the bottom center of the outer inflation nozzle is provided with an inflation hole. For the on-site inflatable cabinet, a special inflatable connector is designed. When in use, open the one-way valve on the inflatable cabinet to inflate, which is convenient to operate; the inflatable connector adopts a split design and has a simple structure; Sealing during joint work.

Description

Ring main unit inflatable connector

technical field

The utility model relates to the field of inflating and replenishing air on-site of a ring network cabinet, in particular to an inflatable joint of a ring network cabinet.

Background technique

This connector is mainly used for inflating and supplying air on site in the ring main unit. When working on site, it is necessary to ensure that the insulating gas inside the cabinet does not leak out again, and that the connection of the inflatable joint does not leak air into the air box. At present, the inflation and air replenishment of the ring network cabinet are generally carried out by the manufacturer. The inflation joint is relatively complicated, and it is inconvenient to carry because it needs to be connected with many devices. It is very inconvenient to return to the factory for inflation.

Utility model content

In order to overcome the deficiencies of the prior art, the utility model designs an inflatable joint of the ring network cabinet, which has simple structure, convenient operation and good sealing performance.

The technical scheme adopted by the utility model is that the inflatable connector of the ring network cabinet, the key is: including the inflatable interface and the inflatable nozzle, the inflatable interface is a sleeve structure, and the inflatable nozzle part that is clamped in the inflatable interface is the inner inflation The part of the inflatable nozzle outside the inflatable interface is an external inflatable nozzle, and the inner side of the inflatable interface is provided with an internal thread, and the external thread and the internal thread on the outside of the internal inflatable nozzle form a thread fit. A sealing groove is arranged on the periphery and lower than the gas charging port, the outer surface of the outer gas charging nozzle is a pagoda surface, and an gas charging hole is arranged at the center of the bottom end of the outer gas charging nozzle.

The sealing groove is an annular structure.

The inflation port is arranged on the outer surface of the top end of the inner inflation nozzle.

A sealing ring is arranged in the sealing groove 5 .

Lubricant is provided in the sealing groove 5 .

The shape of the inflation interface 1 is a hexagonal prism.

The inner diameter of the inflation interface 1 is 21.5mm, and the thread is M21.5×1.5.

The inflation port 4 is a through hole, and the inner diameter of the inflation port 4 is 1.5mm.

The outer diameter of the outer inflation nozzle 3 is a thread surface, and the thread is M21.5×1.5.

The inner diameter of the inflation port 7 is 3mm.

The beneficial effect of the utility model is that, aiming at the on-site inflatable cabinet, a special inflatable connector is designed, and the one-way valve on the inflatable cabinet is opened to inflate when in use, and the operation is convenient; the inflatable connector adopts a split design, and the structure is simple; A sealing ring is provided to ensure the sealing performance of the inflatable joint during work.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the accompanying drawings, 1 is an inflation interface, 2 is an inner inflation nozzle, 3 is an outer inflation nozzle, 4 is an inflation port, 5 is a sealing groove, 6 is a pagoda surface, and 7 is an inflation hole.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

Specific embodiments, as shown in Figure 1, the key of the inflatable joint of the ring network cabinet is: including the inflatable interface 1 and the inflatable nozzle, the described inflatable interface 1 is a bushing structure, and the inner diameter of the inflated interface 1 is 21.5 mm, The thread is M21.5×1.5. In order to facilitate the installation of the inflatable interface 1, the shape of the inflatable interface 1 is a hexagonal prism. The inflatable nozzle part that is snapped into the inflatable interface 1 is the inner inflatable nozzle 2, and the inflatable nozzle is outside the inflatable interface 1. The part is the outer inflation nozzle 3, the outer diameter of the outer inflation nozzle 3 is a threaded surface, and the thread is M21.5×1.5), the inner side of the inflation interface 1 is provided with an internal thread, and the outer thread of the inner inflation nozzle 2 is arranged on the outer side and The internal thread forms a thread fit, and the top outer surface of the inner inflation nozzle 2 is provided with an inflation port 4. The inflation port 4 is a through hole, and the inner diameter of the inflation port 4 is 1.5 mm. The position is provided with a sealing groove 5, one is to ensure the tightness between the inner charging nozzle 2 and the one-way valve, and the other is to ensure that the gas in the ring main unit does not leak outward, the sealing groove 5 is an annular structure, and the A sealing ring is arranged in the sealing groove 5, the inner diameter of the sealing ring is 13 mm, and the outer diameter is 18 mm. Silicone grease is applied on the sealing ring during use. The center of the bottom end is provided with an air-filling hole 7 with an inner diameter of 3 mm.

When the utility model is actually implemented, the working process of the inflatable joint of the ring network cabinet: firstly, the pressure reducing valve, the inflatable pipe and the inflatable joint are connected in sequence, the pressure reducing valve is installed in the air outlet of the gas cylinder, and silicon is applied to the sealing ring of the inflatable joint. Then, use a wrench to turn the hexagonal prism inflation port, and as the inflation port is fixed in place, the top of the inflation nozzle can open the one-way valve, that is, the one-way valve on the inflatable cabinet at this time The valve has been opened; the gas flow direction: gas cylinder - pressure reducing valve - inflation tube - inflation connector - one-way valve on the inflatable cabinet - in the inflatable cabinet; finally, after the inflation is completed, the hexagonal prism inflation interface can be removed, and the inflation is completed. The inflatable joint is designed in a split type, and there is a sealing ring between the two parts. Silicone grease is applied when using it to ensure the airtightness of the air joint. When supplying air on site, the inflation joint is fixed to the one-way valve on the ring network cabinet. At this time, the top of the inflation joint can open the one-way valve to inflate the ring network cabinet, so that the insulating gas inside the cabinet can not be released Secondary leakage, at the same time, the connection of the inflatable joint does not leak air into the air box.

Claims (10)

1. The inflatable joint of the ring network cabinet is characterized in that it includes an inflatable interface (1) and an inflatable nozzle, the inflatable interface (1) is a casing structure, and the inflatable nozzle is clamped on the inflatable nozzle part in the inflatable interface (1) It is an inner inflation nozzle (2), and the part of the inflation nozzle on the outside of the inflation interface (1) is an outer inflation nozzle (3). The inner side of the inflation interface (1) is provided with an internal thread, and the outer thread arranged on the outer side of the inner inflation nozzle (2) is in line with the The internal thread forms a thread fit, the top of the inner inflation nozzle (2) is provided with an inflation port (4), the outer periphery of the inflation port (4) is provided with a sealing groove (5) at a position lower than the inflation port (4), and the outer inflation nozzle (3 ) outer surface is a pagoda surface (6), and the center of the bottom end of the outer inflation nozzle (3) is provided with an inflation hole (7). 2. The inflatable joint of the ring main unit according to claim 1, characterized in that: the sealing groove (5) is a ring structure. 3. The charging joint of the ring main unit according to claim 1, characterized in that: the charging port (4) is arranged on the outer surface of the top end of the inner charging nozzle (2). 4. The inflatable joint of the ring network cabinet according to claim 1, characterized in that: a sealing ring is arranged in the sealing groove (5). 5. The inflatable joint of the ring main unit according to claim 1, characterized in that: a lubricant is arranged in the sealing groove (5). 6. The charging joint of the ring network cabinet according to claim 1, characterized in that: the shape of the charging joint (1) is a hexagonal prism. 7. The inflatable connector of the ring main unit according to claim 1, characterized in that: the inner diameter of the inflatable interface (1) is 21.5mm, and the thread is M21.5×1.5. 8. The charging joint of the ring network cabinet according to claim 1, characterized in that: the charging port (4) is a through hole, and the inner diameter of the charging port (4) is 1.5 mm. 9. The charging joint of the ring main unit according to claim 1, characterized in that: the outer diameter of the outer charging nozzle (3) is a threaded surface, and the thread is M21.5×1.5. 10. The charging joint of the ring main unit according to claim 1, characterized in that: the inner diameter of the charging port (7) is 3 mm.