CN214313039U - Stop sheet type flow switch with anti-corrosion function - Google Patents

Abstract

The utility model discloses a baffle type flow switch with anti-corrosion function, which comprises a junction box, an interface, a baffle and an elastic anti-corrosion shielding layer; the interface is arranged on the junction box, and the blocking piece is arranged on one side of the interface, which is back to the junction box, and is connected with the junction box; the anti-corrosion shielding layer is coated outside the separation blade and connected to the interface, and swings relative to the interface along with the separation blade. The baffle piece type flow switch with the anti-corrosion function protects the cladding of the baffle piece through the anti-corrosion shielding layer, does not influence the swing of the baffle piece, and avoids the conditions that the baffle piece type flow switch is broken and the interface is leaked when being used in liquid media such as seawater for a long time; providing a more reliable isolation of the terminal block from the medium.

Description

Stop sheet type flow switch with anti-corrosion function

Technical Field

The utility model relates to a flow switch especially relates to a keep off piece formula flow switch of anticorrosive function of utensil.

Background

At present, a liquid receiving part of a barrier sheet type flow switch widely used in a nuclear power station is made of stainless steel, the liquid receiving part is used in a seawater cooling loop for monitoring flow for a long time, corrosion conditions exist at a barrier sheet, a connecting piece and a mechanical interface, faults such as fracture of the barrier sheet or the connecting piece and medium leakage at the mechanical interface occur, and long-term online operation reliability is low.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a keep off piece formula flow switch of utensil anticorrosive function.

The utility model provides a technical scheme that its technical problem adopted is: the baffle type flow switch with the anti-corrosion function comprises a junction box, an interface, a baffle and an elastic anti-corrosion shielding layer;

the interface is arranged on the junction box, and the blocking piece is arranged on one side of the interface, which is back to the junction box, and is connected with the junction box; the anti-corrosion shielding layer is coated outside the separation blade and connected to the interface, and swings relative to the interface along with the separation blade.

Preferably, the anti-corrosion shielding layer comprises an anti-corrosion coating coated on one end of the separation blade far away from the interface, and an elastic shielding sleeve sleeved on one end of the separation blade close to the interface;

one end of the elastic shielding sleeve is connected to the anticorrosive coating in a sealing mode, and the other end of the elastic shielding sleeve is connected to the interface.

Preferably, the anti-corrosion shielding layer is a telescopic anti-corrosion shielding sleeve with an opening at one end, and the anti-corrosion shielding sleeve is sleeved outside the separation blade and sleeved on the interface through the opening of the anti-corrosion shielding sleeve.

Preferably, the anti-corrosion shielding sleeve is an anti-corrosion rubber sleeve.

Preferably, the flap type flow switch further comprises a connecting piece, and the flap is connected with the junction box through the connecting piece.

Preferably, a first end of the connecting piece penetrates into the interface to be connected with the junction box, and the interface is exposed out of a second end of the connecting piece;

one end of the blocking piece is connected to the second end of the connecting piece through a fastener.

Preferably, the fastener comprises a screw.

The utility model has the advantages that: the barrier sheet is coated by the anti-corrosion shielding layer for protection, and meanwhile, the swing of the barrier sheet is not influenced, so that the situations that the barrier sheet type flow switch is broken and leaks at the interface when being used in liquid media such as seawater for a long time and the like are avoided; providing a more reliable isolation of the terminal block from the medium.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic structural view of a barrier sheet type flow switch with an anti-corrosion function according to an embodiment of the present invention.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1, a flow switch with anti-corrosion function of the present invention includes a junction box 10, a connector 20, a blocking sheet 30 and an elastic anti-corrosion shielding layer 40.

The interface 20 is disposed on the terminal box 10, and the baffle 30 is disposed on a side of the interface 20 opposite to the terminal box 10 and connected to the terminal box 10. The anti-corrosion shielding layer 40 covers the baffle 30 and is connected to the interface 20, so that the whole baffle 30 is sealed, and the anti-corrosion effect is achieved on the baffle 30. And the anti-corrosion shielding layer 40 can swing along with the baffle 30 relative to the interface 20, so that the movement of the baffle 30 and the conduction of the junction box 10 are not influenced, and the switching function is realized.

The interface 20 is a mechanical interface and is fixed on the junction box 10 by a nut or welding. The interface 20 is adapted to a pipe or the like, so that the whole flow switch can be mounted on the pipe or the like.

The baffle 30 is located at one side of the interface 20 and can be connected with the junction box 10 through a connecting piece 50, and after being acted by fluid, the baffle can swing back and forth relative to the interface 20, a swing signal is transmitted into the junction box 10, and the junction box 10 performs corresponding actions to realize switching.

Correspondingly, the flap type flow switch of the present invention further includes a connecting member 50, and the flap 30 is connected to the junction box 10 through the connecting member 50.

Specifically, in the present embodiment, the connector 50 has opposite first and second ends; the first end of the connecting piece 50 penetrates into the interface 20 to be connected with the junction box 10, and the second end of the connecting piece is exposed out of the interface 20; one end of flap 30 is attached to the second end of connector 50 by fastener 51. The fastener 51 may include a screw or the like, so that the separation blade 30 can be detachably attached to the connecting member 50, and replacement and maintenance are facilitated.

The anti-corrosion shielding layer 40 is elastic and stretchable so as not to affect the swing of the baffle 30. The anti-corrosion shielding layer 40 can be made of polytetrafluoroethylene, neoprene, or the like.

In this embodiment, the anti-corrosion shielding layer 40 includes an anti-corrosion coating 41 coated on an end of the baffle 30 away from the interface 20, and an elastic shielding sleeve 42 sleeved on an end of the baffle 30 close to the interface 20. The elastic shield 42 is sealingly attached to the corrosion protection coating 41 at one end and to the interface 20 at the opposite end, also enclosing the connector 50 therein. The corrosion-resistant shielding layer 40 can effectively avoid the long-term corrosion of the corrosive medium to the connecting piece 50, and can ensure the normal angle deviation of the connecting piece 50 when the baffle 30 acts, so that the normal action of the flow switch is not influenced.

An anti-corrosion coating 41 is provided as a coating on the end of the flap 30 remote from the mouthpiece 20, covering the end face and all surfaces of that end. The elastic shielding sleeve 42 is covered on one end of the blocking piece 30 close to the interface 20 in a sleeving manner, so that the swing of the blocking piece 30 is not limited, and when the blocking piece 30 swings, the elastic shielding sleeve 42 is also deformed and swings along with the deformation.

In other embodiments, the anti-corrosion shielding layer 40 is a telescopic anti-corrosion shielding sleeve with an opening at one end, and the whole sleeve is sleeved outside the blocking sheet 30 and sleeved on the interface 20 with the opening thereof, so that the blocking sheet 30 can be protected from corrosion, and the swing of the blocking sheet 30 is not limited. Alternatively, the corrosion-resistant shielding sleeve may be a corrosion-resistant rubber sleeve.

The utility model discloses a but utensil anticorrosive function's fender formula flow switch wide application promotes the long-term online operational reliability of fender formula flow switch long-term use at media such as sea water on each process systems flow monitoring circuit of nuclear power station.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims (7)

1. A stop piece type flow switch with an anti-corrosion function is characterized by comprising a junction box, an interface, a stop piece and an elastic anti-corrosion shielding layer;

the interface is arranged on the junction box, and the blocking piece is arranged on one side of the interface, which is back to the junction box, and is connected with the junction box; the anti-corrosion shielding layer is coated outside the separation blade and connected to the interface, and swings relative to the interface along with the separation blade.

2. The flapper flow switch of claim 1, wherein the anti-corrosion shielding layer comprises an anti-corrosion coating coated on an end of the flapper away from the port, an elastic shielding sleeve sleeved on an end of the flapper close to the port;

one end of the elastic shielding sleeve is connected to the anticorrosive coating in a sealing mode, and the other end of the elastic shielding sleeve is connected to the interface.

3. The flapper flow switch of claim 1, wherein the anti-corrosion shield is a retractable anti-corrosion shield with an open end, and is sleeved on the flapper and sleeved on the port with its open end.

4. The flapper flow switch of claim 3, wherein the corrosion resistant shield is a corrosion resistant rubber sleeve.

5. The flapper flow switch of any one of claims 1-4, further comprising a connector by which the flapper is connected to the junction box.

6. The flapper flow switch of claim 5 wherein a first end of the connector extends into the port for connection to the junction box and an opposite second end exposes the port;

one end of the blocking piece is connected to the second end of the connecting piece through a fastener.

7. The flapper flow switch of claim 6, wherein the fastener comprises a screw.

Images