Breather valve
By adding a three-way valve and a control valve to the breathing valve, and using an external air source for detection, the problems of low efficiency and poor safety of traditional detection methods are solved, achieving fast, safe and flexible detection results.
Patent Information
- Application Number
- CN202520572766.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-29
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-03-29
AI Technical Summary
Traditional methods for testing breather valves are time-consuming, costly, labor-intensive, and compromise safety, resulting in low testing efficiency.
By adding a three-way valve and a control valve, an external air source is used for air intake and exhaust. Combined with a diaphragm to sense pressure changes, the working status of the breathing valve can be detected online, and the gas flow rate can be adjusted by the control valve to simulate the response under different pressure conditions.
It enables rapid, safe, and flexible testing of breather valves, improving testing efficiency, reducing labor intensity, and enhancing safety.
Smart Images
Figure CN223754795U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of valves, in particular to a breather valve. BACKGROUND
[0002] The breather valve is an important accessory for protecting the safety of a storage tank, which is installed on the top of the storage tank and consists of a pressure valve and a vacuum valve. In general, the breather valve maintains the airtightness of the storage tank, maintains the pressure balance of the storage tank, and reduces the volatilization of the medium. The breather valve makes full use of the pressure-bearing capacity of the storage tank to reduce the emission of the medium. The principle is to use the weight of the positive and negative pressure valve disc to control the exhaust positive pressure and the inhalation negative pressure of the storage tank. The automatic ventilation adjustment balances the pressure inside and outside the storage tank, which can play a safety role for the storage tank. According to the standard requirements of SYT 0511.1-2010 “Petroleum Storage Tank Accessories Part 1: Breather Valve”, the breather valve is detected at least once a year, and performance detection such as opening pressure and leakage is an indispensable item.
[0003] When the pressure of the traditional inner groove breather valve needs to be changed in the use site or the pressure changes, the pressure in the storage tank needs to be punched or the pressure needs to be slowly increased by relying on the self-pressurization of the storage tank to reach the take-off pressure of the breather valve. When the breather valve takes off, the gas in the storage tank is discharged to reduce the pressure of the storage tank, and the pressure needs to be adjusted repeatedly several times to adjust the pressure.
[0004] This detection method not only has a long detection period, high cost, and high labor intensity, but also affects safety. CONTENT OF THE UTILITY MODEL
[0005] The present application aims to at least solve one of the technical problems in the related art.
[0006] Therefore, the present application provides a breather valve, which comprises a valve body, a valve cover, a valve rod, a valve flap, a diaphragm, a pilot valve, and a three-way pipe.
[0007] In the technical scheme, when detection is needed, the gas is introduced into the gas inlet through the first interface, and the valve disc moves as the gas pressure between the valve disc and the gas inlet increases; meanwhile, the gas is introduced into the control circuit of the pilot valve through the second interface, and the pressure change is sensed through the diaphragm, so that the valve rod is driven to move according to the pressure change, thereby it can be judged whether the breather valve is normally opened, and the working state of the breather valve is detected online. The detection method is more convenient and fast, thereby the detection efficiency of the breather valve is improved; meanwhile, the gas is introduced and discharged through the external gas source, which is safer than the gas introduced and discharged by the storage tank.
[0008] In some technical schemes, optionally, the control valve is further connected with the third interface to control the opening and closing of the third interface. In this way, the gas flow into the tee pipe can be accurately controlled by adjusting the opening of the control valve, so as to simulate the valve disc response under different pressure conditions and improve the flexibility of detection.
[0009] In some technical schemes, optionally, the control valve is a needle valve.
[0010] The needle valve can realize stepless adjustment of the gas flow by cooperation of the conical valve core and the valve seat, and is especially suitable for low-flow and high-precision detection scenarios, and has simple structure and short valve core stroke, so that fast opening and closing can be realized and the detection efficiency is improved.
[0011] In some technical schemes, optionally, the control valve is further connected with the third interface to control the opening and closing of the third interface. In this way, the gas flow into the tee pipe can be accurately controlled by adjusting the opening of the control valve, so as to simulate the valve disc response under different pressure conditions and improve the flexibility of detection.
[0012] In the technical scheme, the gas is introduced and discharged through the external gas source, which is safer than the gas introduced and discharged by the storage tank. In actual application, the connecting pipe can be selected in different lengths and directions according to actual installation requirements to adapt to the gas source access under complex working conditions.
[0013] In some technical schemes, optionally, the other end of the connecting pipe is provided with a bending section. Thus, rainwater and other media can be prevented from entering the valve.
[0014] In some technical schemes, optionally, the bending section comprises a first bending part and a second bending part; the first bending part extends downward, and the second bending part is connected with the first bending part and extends toward the valve body.
[0015] In actual application, the downward bending forms a "brim" structure to guide rainwater or other media to flow down along the outer wall of the connecting pipe, avoiding direct entry into the interface of the connecting pipe; further, the extension toward the valve body can further prevent rainwater from entering the interface of the connecting pipe.
[0016] In some technical schemes, optionally, the first interface and the valve body are detachably connected through a first pipe joint.
[0017] In some embodiments, the second interface and the pilot valve are detachably connected through the second pipe joint.
[0018] In the above technical solution, the first pipe joint and the second pipe joint allow quick replacement or repair of related components without disassembling the valve body, and the detachable connection design can greatly shorten downtime and improve production efficiency during equipment maintenance or upgrading. At the same time, by replacing pipe joints of different specifications or types, different external pipelines or equipment can be adapted.
[0019] Additional aspects and advantages of the present application will become apparent from the following description with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS
[0020] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings in which:
[0021] Figure 1 A structural schematic diagram of a breathing valve in an embodiment of the present application is shown;
[0022] Figure 2 A structural schematic diagram of a tee pipe in an embodiment of the present application is shown;
[0023] Figure 3 A structural schematic diagram of a control valve in an embodiment of the present application is shown;
[0024] Figure 4 A structural schematic diagram of a connecting pipe in an embodiment of the present application is shown.
[0025] Wherein, Figures 1 to 4 The correspondence between the reference signs and the component names in the accompanying drawings is as follows:
[0026] 100 valve body; 110 inlet; 200 valve cover; 210 upper cavity; 220 lower cavity; 300 valve stem; 310 valve flap; 400 diaphragm; 500 pilot valve; 600 tee pipe; 610 first interface; 620 second interface; 630 third interface; 700 control valve; 800 connecting pipe; 810 bent section; 811 first bent portion; 812 second bent portion; 910 first pipe joint; 920 second pipe joint. DETAILED DESCRIPTION
[0027] In order to enable those skilled in the art to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application will be further described in detail below in conjunction with the drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0028] In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can be practiced in other manners different from those described herein, and therefore, the scope of the present application is not limited to the specific embodiments disclosed below.
[0029] The breathing valve provided by the embodiments of the present application will be described in detail below in combination with specific embodiments and application scenarios. Figures 1 to 4
[0030] With reference to Figures 1 to 4 The breathing valve provided by the embodiments of the present application includes a valve body 100, a valve cover 200, a valve rod 300, a diaphragm 400, a pilot valve 500 and a three-way pipe 600.
[0031] Specifically, the bottom of the valve body 100 is provided with an air inlet 110.
[0032] The valve cover 200 is arranged in the valve body 100 and divides the inside of the valve body 100 into an upper cavity 210 and a lower cavity 220, and the lower cavity 220 is in communication with the air inlet.
[0033] The valve rod 300 is arranged in the valve body 100 and is in sliding fit with the valve cover 200; the bottom of the valve rod 300 is provided with a valve flap 310; wherein the valve flap 310 is located in the lower cavity 220 and can block the communication part of the lower cavity 220 and the air inlet 110.
[0034] The diaphragm 400 is arranged on the valve rod 300 and is located in the upper cavity 210.
[0035] The pilot valve 500 is arranged on the valve body 100 and is connected with the valve rod 200 to drive the valve rod 200 to move, thereby driving the valve flap 310 on the valve rod 300 to move to block the communication part of the lower cavity 220 and the air inlet 110 or to make the air inlet 110 and the lower cavity 220 in communication.
[0036] The three-way pipe 600 includes a first interface 610, a second interface 620 and a third interface 630. Wherein the first interface 610 is connected with the valve body 100, and the connection position of the first interface 610 and the valve body 100 is located between the valve flap 310 and the opening of the air inlet 110; the second interface 620 is connected with the pilot valve; the third interface 630 is used for connecting an external air source.
[0037] In the above embodiment, by adding the tee pipe 600, when detection is needed, the gas is introduced into the gas inlet 110 through the first interface 610, and as the gas pressure between the valve disc 310 and the gas inlet 110 increases, the valve disc 310 moves; at the same time, the gas is introduced into the control circuit of the pilot valve 500 through the second interface 620, and the pressure change is sensed through the diaphragm 400, so as to drive the valve rod 300 to move according to the pressure change, thereby judging whether the breather valve is normally opened, so as to realize online detection of the working state of the breather valve. The above detection method is more convenient and fast, thereby improving the detection efficiency of the breather valve; at the same time, the gas is introduced and discharged through the external gas source, which is safer than the gas introduced and discharged by the storage tank.
[0038] In some embodiments, the breather valve further comprises a control valve 700. The control valve 700 is connected with the third interface 630 to control the on-off of the third interface 630. At the same time, by adjusting the opening degree of the control valve 700, the gas flow entering the tee pipe 600 can be accurately controlled, so as to simulate the response of the valve disc 310 under different pressure conditions, thereby improving the flexibility of detection.
[0039] In the above embodiment, the control valve 700 is a needle valve. The needle valve can realize stepless adjustment of gas flow by cooperating the conical valve core with the valve seat, and is especially suitable for low-flow and high-precision detection scenarios, and has simple structure, short valve core stroke, and can realize fast opening and closing, thereby improving the detection efficiency. It can be understood that in actual application, in addition to the needle valve, a switch valve, a shut-off valve, etc. can also be used.
[0040] In some embodiments, the breather valve further comprises a connecting pipe 800, one end of the connecting pipe 800 is connected with the inlet of the control valve 700, and the other end is connected with an external gas source. The gas is introduced and discharged through the external gas source, which is safer than the gas introduced and discharged by the storage tank. In actual application, the connecting pipe 800 can be selected in different lengths and directions according to actual installation requirements to adapt to the gas source access under complex working conditions.
[0041] In some embodiments, the other end of the connecting pipe 800 is provided with a bending section 810, so as to prevent rainwater and other media from entering the valve interior.
[0042] Specifically, the bending section 810 comprises a first bending part 811 and a second bending part 812. The first bending part 811 is bent downward, and the second bending part 812 is connected with the first bending part 811 and extends towards the valve body 100.
[0043] In the above embodiment, the "brim" structure is formed by bending downward, so as to guide the rainwater or other media to flow down along the outer wall of the connecting pipe 800, thereby avoiding direct entry into the interface of the connecting pipe 800; further, by extending towards the valve body 100, the rainwater can be further prevented from entering the interface of the connecting pipe 800.
[0044] In some embodiments, the first pipe joint 910 is detachably connected between the first interface 610 and the valve body 100.
[0045] The first pipe joint 910 allows quick replacement or repair of relevant components without disassembling the valve body 100, and the detachable connection design can greatly shorten downtime and improve production efficiency during equipment maintenance or upgrading. At the same time, by replacing different specifications or types of first pipe joints 910, different external pipelines or equipment can be adapted
[0046] Similarly, in actual application, the second pipe joint 920 is detachably connected between the second interface 620 and the pilot valve 500.
[0047] It should be noted that in the claims, the specification and drawings of the present application, the term "a plurality of" means two or more, unless otherwise expressly specified, the terms "upper", "lower", and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship, and are only used to more conveniently describe the present application and make the description process more simple, and therefore these descriptions cannot be understood as limiting the present application; the terms "connection", "installation", "fixation" and the like should be understood in a broad sense, for example, "connection" can be a fixed connection between multiple objects, or a detachable connection between multiple objects, or an integral connection; can be a direct connection between multiple objects, or an indirect connection between multiple objects through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances of the above data.
[0048] In the claims, the specification and drawings of the present application, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the claims, the specification and drawings of the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0049] The above is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A breather valve characterized in that, The utility model relates to a valve, which comprises: a valve body provided with an air inlet; a valve cover arranged in the valve body and separating the valve body into an upper cavity and a lower cavity, wherein the lower cavity is in communication with the air inlet; a valve rod arranged in the valve body and in sliding fit with the valve cover, the bottom of the valve rod being provided with a valve flap, the valve flap being located in the lower cavity and capable of blocking the communication between the lower cavity and the air inlet; a diaphragm arranged on the valve rod and located in the upper cavity; a pilot valve arranged on the valve body and connected with the valve rod; a tee pipe having a first interface, a second interface and a third interface, wherein the first interface is connected with the valve body, the connection position between the first interface and the valve body being located between the valve flap and the opening of the air inlet, the second interface is connected with the pilot valve, and the third interface is used for connecting an external air source.
2. The breather valve of claim 1, wherein, The utility model further comprises a control valve, which is connected with the third interface to control the on-off of the third interface.
3. The breather valve of claim 2, wherein, The control valve is a needle valve.
4. Breathing valve according to claim 2 or 3, characterized in that The utility model further comprises a connecting pipe, one end of which is connected with the inlet of the control valve, and the other end of which is connected with an external air source.
5. The breather valve of claim 4, wherein, The other end of the connecting pipe is provided with a bending section.
6. The breather valve of claim 5, wherein, The bending section comprises a first bending part and a second bending part, the first bending part extending downward, and the second bending part being connected with the first bending part and extending toward the valve body.
7. The respiratory valve of claim 1, wherein, The first interface and the valve body are detachably connected through a first pipe joint.
8. Breathing valve according to claim 1 or 7, characterized in that The second interface and the pilot valve are detachably connected through a second pipe joint.