CN211549954U

CN211549954U - Breather valve

Info

Publication number: CN211549954U
Application number: CN201922488449.8U
Authority: CN
Inventors: 胡锦武; 何伟; 周粤
Original assignee: Guangdong Dapeng Liquefied Natural Gas Co ltd
Current assignee: Guangdong Dapeng Liquefied Natural Gas Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-22
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a breather valve, including adjusting part and the breather valve body of connecting sea water pipe and outside atmospheric pressure simultaneously, this internal inlet port that is equipped with of breather valve, the below of inlet port is equipped with the support frame, adjusting part wears to locate the support frame, adjusting part includes the valve plate, adjusts the height of valve plate is in order to adjust the inlet port is opened or is closed. The adjusting part realizes that the automatically regulated inlet port is opened or is closed under water pressure and atmospheric pressure's effect, make the sea water pipe operation more smooth and easy, the sea water pipe is connected with the sea water pump, can supply the air for the sea water pipe fast when the pump stops, also can be when the pump starts, the air in the sea water pipe of quick discharge, the pipeline that the sea water runs off when avoiding stopping the pump forms the vacuum fast, probably cause the pipeline to collapse the problem of deformation because of the high vacuum during serious, avoid not in time exhaust air when the pump starts, cause the air to appear being compressed to the blasting condition, cause the problem of pipeline harm.

Description

Breather valve

Technical Field

The utility model relates to a valve field, the more specifically breather valve that says so.

Background

The sea water pump is the main equipment of Liquefied Natural Gas (LNG) receiving station, provides the heat medium for the LNG vaporizer, gasifies LNG into Natural Gas (NG) and exports through the vaporizer.

Because of the influence of topography, sea water pump and vaporizer have certain drop usually, when stopping the pump, because of the effect of sea water dead weight, the sea water of high pipeline section will produce a water hammer effect and flow to low place fast, at this moment, if do not supplement the air admission, the pipeline that the sea water runs off will form the vacuum fast, may cause the pipeline to collapse and warp because of the high vacuum in serious cases. In addition, if a large amount of air is stored in the pipeline, the air is not discharged in time when the pump is started, and the air is compressed to the explosion condition, and the pipeline damage can be caused. In general, in order to avoid the effect of water hammer, outlet one-way valves are arranged at the outlets of the seawater pumps, but the one-way valves can leak after long-time operation, and when the seawater pumps are stopped, the outlet pipelines of the seawater pumps can also have the problems of pipeline cavitation, vibration and the like caused by seawater loss at high pipe sections, and even cause pipeline damage. To avoid this, it is common practice to install a breather valve at the high position of the pipe, which has the function of quickly discharging the air in the pipe, in addition to quickly replenishing the outlet pipe with air when the pump is stopped, also when the pump is started.

Although present most breather valves can play the above-mentioned exhaust effect of breathing in, nevertheless because the pump opens and stops the kinetic energy change of production and change, also very big to the impact of each spare part of breather valve, because structural reason, a lot of breather valve trouble is frequent, and the connecting rod snap often appears, and spare parts separation conditions such as valve plate, connecting rod and floater cause the pipeline to leak seriously and even take place when being forced the parking circumstances.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a breather valve.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a breather valve, includes adjusting part and connects the sea water pipe simultaneously and the breather valve body of outside atmospheric pressure, this internal inlet port that is equipped with of breather valve, the below of inlet port is equipped with the support frame, adjusting part wears to locate the support frame, adjusting part includes the valve plate, adjusts the height of valve plate is in order to adjust the inlet port is opened or is closed.

The further technical scheme is as follows: the adjusting component further comprises a connecting rod and a floating ball, the connecting rod penetrates through the supporting frame, the upper end of the connecting rod is fixedly connected with the valve plate, and the lower end of the connecting rod is fixedly connected with the floating ball.

The further technical scheme is as follows: the upper portion cover of connecting rod is equipped with the spring, spring one end is stopped and is supported the bottom of valve plate, and the other end is stopped and is supported the support frame.

The further technical scheme is as follows: the breather valve body comprises an upper cover and a valve body, wherein a gasket is arranged between the upper cover and the valve body and is fixedly connected through a bolt.

The further technical scheme is as follows: the bottom of the valve body is connected with a flange, and the flange is communicated with a seawater pipe.

The further technical scheme is as follows: the upper cover is provided with a breathing hole which is communicated with the external atmospheric pressure.

The further technical scheme is as follows: and a nut or an anti-rotation pin connected with the connecting rod is arranged on the outer sides of the valve plate and the floating ball.

Compared with the prior art, the utility model beneficial effect be: the utility model relates to a breather valve is through setting up adjusting part, adjusting part is under water pressure and atmospheric pressure's effect, it opens or closes to realize the automatically regulated inlet port, make the sea water pipe operation more smooth and easy, the sea water pipe is connected with the sea water pump, can supply the air for the sea water pipe fast when the pump stops, also can be when the pump starts, the air in the sea water pipe of quick emission, the pipeline that the sea water runs off when avoiding stopping the pump forms the vacuum fast, probably cause the pipeline to collapse the problem of deformation because of the high vacuum when serious, avoid not in time discharging the air when the pump starts, cause the air to appear being compressed to the blasting condition, cause the problem of pipeline harm. The whole breather valve has the characteristics of compact structure, automatic and free opening and closing, low exhaust noise, long service life, convenient maintenance and installation, safety, reliability and the like, avoids the problems of leakage, pipeline excitation vibration and the like caused by the failure of the breather valve, and ensures that the operation of the sea water pump is more stable and reliable.

The foregoing is a summary of the present invention, and other objects, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments, which is provided for the purpose of illustration and understanding of the present invention.

Drawings

Fig. 1 is a schematic half-section view of a breather valve.

Reference numerals

1. A breather valve body; 11. an air inlet; 12. a support frame; 13. an upper cover; 14. a valve body; 15. a gasket; 16. a bolt; 17. a flange; 18. a breathing hole; 19. an anti-rotation pin; 2. an adjustment assembly; 21. a valve plate; 22. a connecting rod; 23. a floating ball; 24. a spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and the following detailed description.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "secured" are to be construed broadly and can, for example, be connected or detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.

As shown in fig. 1, a breather valve comprises an adjusting assembly 2 and a breather valve body 1 which is connected with a seawater pipe and an external atmospheric pressure at the same time, wherein an air inlet hole 11 is arranged in the breather valve body 1, a support frame 12 is arranged below the air inlet hole 11, the adjusting assembly 2 is arranged on the support frame 12 in a penetrating manner, the adjusting assembly 2 comprises a valve plate 21, and the height of the adjusting valve plate 21 is adjusted to open or close the air inlet hole 11. The seawater pipe is connected with a seawater pump, the adjusting component 2 realizes the automatic adjustment of the opening or closing of the air inlet hole 11 under the action of water pressure and atmospheric pressure, so that the seawater pipe can run more smoothly, air can be quickly supplemented to the seawater pipe when the pump stops, and when the pump is started, the air in the seawater pipe is discharged quickly, the problem that the pipeline is collapsed and deformed due to high vacuum when the pipeline with seawater loss is quickly vacuumized during the pump stop is avoided, the condition that the air is compressed to be blasted due to the fact that the air is not discharged in time when the pump is started is avoided, the breather valve has the characteristics of compact structure, automatic and free opening and closing, low exhaust noise, long service life, convenient maintenance and installation, safety, reliability and the like, avoids the problems of leakage, pipeline excitation vibration and the like caused by the failure of the breather valve, and ensures that the sea water pump operates more stably and reliably.

Specifically, the adjusting assembly 2 further includes a connecting rod 22 and a floating ball 23, the connecting rod 22 penetrates through the support frame 12, the upper end of the connecting rod 22 is fixedly connected with the valve plate 21, and the lower end of the connecting rod 22 is fixedly connected with the floating ball 23. When the pump is stopped, the valve plate 21, the floating ball 23 and the connecting rod 22 are opened downwards under the action of gravity and negative pressure, and air enters the pipeline. When the pump is started, the valve plate 21 moves upwards under the buoyancy action of the floating ball 23 to discharge air, and the larger the water pressure is, the larger the buoyancy is, the better the sealing performance of the valve plate 21 is. The adjusting assembly 2 realizes the opening or closing of the automatic adjusting air inlet 11 under the action of water pressure and atmospheric pressure, and the stress of the connecting rod 22 is stretching force, so that the service life of the connecting rod 22 is prolonged, and the reliability of the whole breather valve is improved.

Specifically, the speed of upward movement of the valve plate 21 is affected by the change of the water pressure in the pipeline, and the pressure is too high, which may cause the valve plate 21 to close instantly and generate a large impact, but the problem can be reduced by slowly opening the opening degree of the outlet valve of the pump, and even the impact can be avoided.

Specifically, the upper portion of the connecting rod 22 is sleeved with a spring 24, one end of the spring 24 abuts against the bottom of the valve plate 21, and the other end abuts against the supporting frame 12. The spring 24 serves as a buffer so that the valve plate 21 does not open abruptly, avoiding strong impact between the valve plate 21 and other components. That is, when the pump is stopped, the valve plate 21, the floating ball 23 and the connecting rod 22 are opened downward by gravity and negative pressure, and air enters the pipeline. When the valve plate 21 moves downward, the valve plate 21 does not open abruptly due to the spring 24, and strong impact between the valve plate 21 and other components is avoided.

Specifically, the breather valve body 1 comprises an upper cover 13 and a valve body 14, wherein a gasket 15 is arranged between the upper cover 13 and the valve body 14 and is fixedly connected through a bolt 16, and the connection is stable and reliable and is easy to disassemble through the bolt 16.

Specifically, a flange 17 is connected to the bottom of the valve body 14, and the flange 17 is communicated with a seawater pipe.

Specifically, the upper cover 13 is provided with a breathing hole 18, and the breathing hole 18 is communicated with the external atmospheric pressure.

Specifically, the valve plate 21 and the outer side of the float 23 are provided with nuts or rotation preventing pins 19 connected to the connecting rod 22 to prevent the connecting rod 22 from rotating.

Specifically, this breather valve can improve life, but also receives the pump to open and stop the influence of number of times great, still need to keep as far as possible during normal production to operate under the rated operating mode, start and stop equipment according to the operating specification and avoid frequently opening and stopping suitable.

Specifically, the breather valve can be used for seawater pipelines, can also be used for preventing vacuum or water hammer of non-flammable and explosive (such as water supply and drainage) industrial pipelines, can be used for connecting the breather hole 18 with the pipelines and introducing other safe containers if the structure is further improved, can also be used for loading and unloading logistics flows of flammable and explosive and toxic industrial pipelines in petrochemical industry and the like, and has good effect.

Compared with the prior art, the utility model relates to a breather valve is through setting up adjusting part, adjusting part is under water pressure and atmospheric pressure's effect, realize that the automatically regulated inlet port is opened or is closed, it is more smooth and easy to make the sea water pipe move, the sea water pipe is connected with the sea water pump, can supply the air for the sea water pipe when the pump stops fast, also can be when the pump starts, the air in the sea water pipe of quick discharge, the pipeline that the sea water runs off when avoiding stopping the pump forms the vacuum fast, probably cause the pipeline to collapse the problem of deformation because of the high vacuum when serious, avoid not in time exhaust air when the pump starts, cause the air to appear being compressed to the blasting condition, cause the problem of pipeline damage. The whole breather valve has the characteristics of compact structure, automatic and free opening and closing, low exhaust noise, long service life, convenient maintenance and installation, safety, reliability and the like, avoids the problems of leakage, pipeline excitation vibration and the like caused by the failure of the breather valve, and ensures that the operation of the sea water pump is more stable and reliable.

The technical content of the present invention is further described by the embodiments only, so that the reader can understand it more easily, but the embodiments of the present invention are not limited thereto, and any technical extension or re-creation according to the present invention is protected by the present invention. The protection scope of the present invention is subject to the claims.

Claims

1. The utility model provides a breather valve, its characterized in that includes the regulating assembly and connects the sea water pipe simultaneously with the breather valve body of outside atmospheric pressure, this internal inlet port that is equipped with of breather valve, the below of inlet port is equipped with the support frame, the regulating assembly wears to locate the support frame, the regulating assembly includes the valve plate, adjusts the height of valve plate is in order to adjust the inlet port is opened or is closed.

2. The breather valve according to claim 1, wherein the adjusting assembly further comprises a connecting rod and a floating ball, the connecting rod is arranged in the supporting frame in a penetrating manner, the upper end of the connecting rod is fixedly connected with the valve plate, and the lower end of the connecting rod is fixedly connected with the floating ball.

3. The breather valve according to claim 2, wherein a spring is sleeved on the upper portion of the connecting rod, one end of the spring abuts against the bottom of the valve plate, and the other end of the spring abuts against the supporting frame.

4. The breather valve according to claim 1, wherein the breather valve body comprises an upper cover and a valve body, and a gasket is arranged between the upper cover and the valve body and is fixed through a bolt connection.

5. The breather valve according to claim 4, wherein a flange is connected to the bottom of the valve body, and the flange is in communication with a sea water pipe.

6. The breather valve of claim 4, wherein the upper cover is provided with a breather hole, and the breather hole is communicated with external atmospheric pressure.

7. The breather valve according to claim 2, wherein the valve plate and the outer side of the floating ball are provided with nuts or anti-rotation pins connected with the connecting rod.