CN220850875U - Double-valve-disc high-flow single-calling valve capable of adjusting opening pressure - Google Patents
Double-valve-disc high-flow single-calling valve capable of adjusting opening pressure Download PDFInfo
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- CN220850875U CN220850875U CN202322814774.5U CN202322814774U CN220850875U CN 220850875 U CN220850875 U CN 220850875U CN 202322814774 U CN202322814774 U CN 202322814774U CN 220850875 U CN220850875 U CN 220850875U
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- 238000007789 sealing Methods 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 3
- 238000005336 cracking Methods 0.000 claims 9
- 238000009423 ventilation Methods 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model discloses a double-valve-disc high-flow single-call valve capable of adjusting opening pressure, which relates to the field of petrochemical industry and comprises a valve body and a valve cover fixedly connected with the valve body, wherein the valve body comprises a valve body outer shell, a valve body inner shell, a connecting flange and an outlet reducing pipe; the first pressure valve disc and the second pressure valve disc are respectively arranged on the inner side of the valve body inner shell through corresponding components. According to the utility model, the opening pressure of the valve disc of the breather valve is controlled by adjusting the pretightening force of the spring, so that the use of a traditional counterweight valve disc is avoided, the integral weight of the breather valve is greatly reduced, the requirement on the vault strength of the storage tank is reduced, and the integral stability of the storage tank system is increased; meanwhile, the design of double valve disc structure is adopted, so that the ventilation capacity of the breather valve is greatly increased.
Description
Technical Field
The utility model relates to the technical field of petrochemical industry, in particular to a double-valve-disc high-flow single-calling valve with adjustable opening pressure.
Background
The single calling valve is a valve which ensures that the storage tank space is isolated from the atmosphere in a certain pressure range and is communicated with the atmosphere when the pressure range is exceeded, and is arranged on a top plate of the storage tank space; the automatic ventilation device has the function of automatically ventilating and regulating the internal and external pressure of the storage tank space when necessary, preventing the storage tank from being damaged due to overpressure, simultaneously maintaining the tightness of the storage tank space, and reducing the evaporation loss of the liquid storage to a certain extent.
The Chinese patent CN202302127U discloses a single-calling valve, the main structure of which is a gravity type single-calling valve commonly used in the market, and the valves all adopt a gravity opening working mode. However, for a single-call valve with a higher opening pressure setting, the weight of the valve disc is correspondingly increased, so that the overall weight of the single-call valve is increased, and the requirement on the dome strength of the storage tank is further increased.
Disclosure of utility model
The utility model aims to solve the defects of the prior art, and provides a double-valve-disc high-flow single-call valve with adjustable opening pressure, which aims at solving the problems of heavy valve disc counterweight, non-adjustable opening pressure, small ventilation and the like of the prior gravity type single-call valve.
In order to solve the technical problems, the utility model adopts the following technical scheme: a double-valve-disc high-flow single-calling valve capable of adjusting opening pressure comprises a valve body and a valve cover fixedly connected with the valve body, wherein a first pressure valve disc and a first assembly, a second pressure valve disc and a second assembly are arranged in the valve body.
The valve body comprises a valve body outer shell, a valve body inner shell, a connecting flange and an outlet reducing pipe, wherein the outlet reducing pipe is fixedly arranged outside the side wall of the valve body outer shell and communicated with the side wall of the valve body outer shell; the valve body inner shell is integrally arranged inside the valve body outer shell and fixedly connected with the valve body outer shell, the connecting part of the valve body inner shell and the valve body outer shell is positioned at the outlet reducing pipe, and the outlet reducing pipe is communicated with the valve body inner shell; the valve body inner shell is of a hollow structure, the top and the bottom of the valve body inner shell are of hollow structures, the hollow rest part forms a cross support piece, a mounting through hole is reserved in the center of the cross support piece, spring sleeves are fixedly arranged on the outer sides of the cross support piece at the top and the bottom of the valve body inner shell, and a first pressure valve disc assembly and a second pressure valve disc assembly are correspondingly mounted in the upper spring sleeve and the lower spring sleeve respectively; the first pressure valve disc and the second pressure valve disc are respectively arranged on the inner side of the cross support piece of the valve body inner shell through the corresponding first pressure valve disc assembly and the corresponding second pressure valve disc assembly, and are in sealing opening and closing connection with the valve body inner shell.
Further, the first pressure valve disc assembly and the second pressure valve disc assembly have the same structure and comprise a pressure valve stud, a pressure valve spring cover plate, a spring pretightening force adjusting nut and a pressure valve bottom nut; the pressure valve stud passes through the corresponding spring sleeve and the through hole is arranged on the cross support piece; the pressure valve spring is sleeved on the pressure valve stud and is positioned in the spring sleeve; the pressure valve spring cover plate is sleeved on the pressure valve stud and is positioned at the outer end side of the pressure valve spring, and the spring pretightening force adjusting nut is arranged on the pressure valve stud and is positioned at the outer side of the pressure valve spring cover plate; the first pressure valve disc and the second pressure valve disc are respectively sleeved on corresponding pressure valve studs and are pressed and fixed through nuts at the bottom of the pressure valve.
Further, the valve body shell is of a hollow structure, the upper end and the lower end of the valve body shell are open, the valve cover is fixedly arranged at the upper end of the valve body shell, and the connecting flange and the lower end of the valve body shell of the valve body are integrally formed; the volume of the valve body inner shell is smaller than that of the valve body outer shell, and a gap is reserved between the valve body inner shell and the valve body outer shell.
Further, the valve body shell and the valve cover are fixedly connected through bolts.
Further, the inner sides of the top and the bottom of the valve body inner shell are respectively provided with a valve disc seat surrounding the valve body inner shell, and the diameter of the valve disc seat is larger than the hollowed-out diameter of the cross support piece and smaller than the outer diameter of the corresponding pressure valve disc I or pressure valve disc II; and annular valve disc sealing surfaces are arranged on the surfaces of the first pressure valve disc and the second pressure valve disc, which face the corresponding valve disc seat, and sealing gaskets which are opposite to the valve disc seat are fixedly arranged on the valve disc sealing surfaces.
Further, the pressure valve spring cover plate is of a sheet structure, and the outer diameter of the pressure valve spring cover plate is smaller than the inner diameter of the spring sleeve and larger than the maximum diameter of the spring pretightening force adjusting nut; the pre-compression amount of the pressure valve spring is adjusted by adjusting the spring pre-tightening force adjusting nut, so that the opening pressure of the pressure valve is controlled.
Further, the longitudinal central axis of the spring sleeve is coincident with the center of the installation through hole on the cross support piece, and the top of the spring sleeve is higher than the bottom surface of the spring pretightening force adjusting nut.
Further, the outer end of the outlet reducing pipe can be connected with and provided with a flame arrester or a rain cover part.
Further, turbulence rings protruding out of the side wall are respectively arranged on the inner side wall of the straight barrel section of the outlet reducing pipe and the inner side wall of the opening at the lower end of the valve body shell.
Compared with the prior art, the utility model has the following beneficial effects: according to the double-valve-disc high-flow single-calling valve capable of adjusting the opening pressure, the opening pressure of the valve disc of the breathing valve is controlled in a mode of adjusting the pretightening force of the spring, so that the use of a traditional counterweight valve disc is avoided, the integral weight of the breathing valve is greatly reduced, the requirement on the vault intensity of a storage tank is reduced, and the integral stability of a storage tank system is improved; meanwhile, the design of the double-valve disc structure is adopted in the utility model, so that the ventilation volume of the breather valve is greatly increased.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a bottom view of the structure of the present utility model;
FIG. 3 is a schematic view of the present utility model in section along a longitudinal plane of symmetry;
In the figure: 1. valve cover, valve body, pressure valve disk I, pressure valve disk II, spring sleeve, pressure valve stud, pressure valve spring cover, spring preload adjusting nut, pressure valve bottom nut, valve body outer shell, valve body inner shell, 23 outlet reducing pipe, 24 connecting flange; 221. cross support 222. Valve disc seat 223. Turbulator ring.
Detailed Description
It should be noted that, in the description of the present utility model, terms such as "upper," "lower," "front," "rear," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and relational terms are merely determined to facilitate description of structural relationships of the components of the present utility model, and do not specifically designate any of the components of the present utility model to have a specific orientation, construct and operate in a specific orientation, and are not to be construed as limiting the present utility model.
It should be further noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings:
As shown in fig. 1 to 3, the double-valve-disc high-flow single-call valve capable of adjusting the opening pressure comprises a valve body 2 and a valve cover 1 fixedly connected with the valve body, wherein a first pressure valve disc 3, a first component, a second pressure valve disc 4 and a second component are further arranged in the valve body 2.
The valve body 2 comprises a valve body outer shell 21, a valve body inner shell 22, a connecting flange 24 and an outlet reducing pipe 23, wherein the valve body outer shell 21 is of a hollow structure, and the upper end and the lower end of the valve body outer shell are open; the outlet reducing pipe 23 is fixedly arranged outside the side wall of the valve body shell 21 and communicated with the side wall of the valve body shell 21, and the central axis of the outlet reducing pipe 23 is perpendicular to the central axis of the valve body shell 21; the valve body inner shell 22 is integrally arranged in the valve body outer shell 21 and is fixedly connected with the valve body outer shell, the connecting part of the valve body inner shell and the valve body outer shell is positioned at the outlet reducing pipe 23, and the outlet reducing pipe 23 is communicated with the valve body inner shell 22 and forms a vent; the outer end of the outlet reducing pipe 23 can be connected with a flame arrester or a rain cover part. The valve body inner shell 22 is also of a hollow structure, the volume of the valve body inner shell is smaller than the inner volume of the valve body outer shell 21, the valve body inner shell and the valve body outer shell are in clearance fit (except for a fixed connection part), meanwhile, the top and the bottom of the valve body inner shell 22 are of hollow structures, the hollow rest forms a cross support piece 221, and a mounting through hole is reserved in the center of the cross support piece 221; the outer side surfaces of the cross support pieces 221 at the top and the bottom of the valve body inner shell 22 are vertically provided with spring sleeves 5, the spring sleeves 5 are fixed by welding, the longitudinal central axis of each spring sleeve 5 coincides with the circle center of the corresponding installation through hole, and the upper spring sleeve 5 and the lower spring sleeve 5 are respectively correspondingly provided with a first pressure valve disc assembly and a second pressure valve disc assembly.
The first pressure valve disc assembly and the second pressure valve disc assembly have the same structure and comprise a pressure valve stud 6, a pressure valve spring 7, a pressure valve spring cover plate 8, a spring pretightening force adjusting nut 9 and a pressure valve bottom nut 10; wherein the pressure valve stud 6 is installed through the corresponding side of the spring bushing 5 and the mounting through hole on the cross support 221; the pressure valve spring 7 is sleeved on the pressure valve stud 6 and is positioned in the spring sleeve 5; the pressure valve spring cover plate 8 is also sleeved on the pressure valve stud 6 and is positioned at the outer end side of the pressure valve spring 7, so that one end of the pressure valve spring 7 is propped against the cross supporting piece 221, and the other end is propped against the bottom side of the pressure valve spring cover plate 8; the spring pre-tightening force adjusting nut 9 is arranged on the pressure valve double-end stud 6 in a threaded fit mode and is positioned on the outer side of the pressure valve spring cover plate 8, and the pre-compression amount of the pressure valve spring 7 is adjusted through the spring pre-tightening force adjusting nut, so that the opening pressure is controlled. The first pressure valve disc 3 and the second pressure valve disc 4 are respectively sleeved on two corresponding pressure valve studs 6 and are pressed and fixed through a pressure valve bottom nut 10; the first pressure valve disc 3 and the second pressure valve disc 4 are both positioned on the inner side of the valve body inner shell 22 and are in sealing opening and closing connection with the valve body inner shell 22.
The inner sides of the top and the bottom of the valve body inner shell 22 are respectively provided with a valve disc seat 222 surrounding the valve disc seat 222, and the diameter of the valve disc seat 222 is larger than the hollowed-out diameter of the cross support piece 221 and smaller than the outer diameter of the corresponding pressure valve disc I3 or pressure valve disc II 4; the faces of the first pressure valve disc 3 and the second pressure valve disc 4 facing the valve disc seat 222 are provided with annular valve disc sealing faces, sealing gaskets are fixedly arranged in the annular range of the valve disc sealing faces, and the sealing gaskets can be tightly attached to the corresponding valve disc seat 222 so as to ensure the sealing between the pressure valve disc and the valve body inner shell 22.
The valve cover 1 is fixedly arranged at the upper end opening of the valve body shell 21 through bolts; the connecting flange 24 is integrally formed with the lower end of the valve body housing 21.
According to a further optimized technical scheme, the pressure valve spring cover plate 8 is of a sheet structure, and the outer diameter of the pressure valve spring cover plate is smaller than the inner diameter of the spring sleeve 5 and larger than the maximum diameter of the spring pretightening force adjusting nut 9; the top of the spring sleeve 5 is slightly higher than the bottom surface of the spring pretightening force adjusting nut 9, so that the jamming phenomenon is avoided.
As a further optimized technical scheme of the utility model, the inner side wall of the straight cylinder of the outlet reducing pipe 23 and the inner side wall of the opening at the lower end of the valve body shell 21 are respectively provided with a turbulence ring 223 protruding from the side wall, which is round, and the addition of the turbulence ring 223 is beneficial to disturbing the internal steady-state flow field when the single-call valve is opened and forming local turbulence at the air vent of the breathing valve, thereby being beneficial to increasing the opening height of the pressure valve disc in the single-call valve, improving the ventilation capacity of the single-call valve and shortening the internal and external pressure balance time of the storage tank space.
When the pressure valve is specifically used, the opening pressures of the first pressure valve disc 3 and the second pressure valve disc 4 are different, namely the pretightening forces of the two corresponding pressure valve springs 7 are different, and the single calling valve step pressure opening can be realized by controlling the spring pretightening force adjusting nut 9. When the overpressure value in the storage tank space is smaller, the pressure valve disc corresponding to the smaller pretightening force is independently opened, so that the ventilation amount is small; when the overpressure value in the storage tank space is large, the first pressure valve disc 3 and the second pressure valve disc 4 are both opened, and the ventilation amount is increased.
When the pressure valve is specifically used, the opening pressure of the first pressure valve disc 3 and the opening pressure of the second pressure valve disc 4 are the same, so that when the pressure in the storage tank space reaches the opening pressure, the first pressure valve disc 3 and the second pressure valve disc 4 are simultaneously opened, and larger ventilation quantity is realized.
It should be understood that the above description is not intended to limit the utility model to the particular embodiments disclosed, but to limit the utility model to the particular embodiments disclosed, and that various changes, modifications, additions and substitutions can be made without departing from the spirit and scope of the utility model as disclosed in the following claims.
Claims (9)
1. The utility model provides a big flow single-way valve of bivalve disc of adjustable cracking pressure which characterized in that: the valve comprises a valve body and a valve cover fixedly connected with the valve body, wherein a first pressure valve disc and a first assembly, a second pressure valve disc and a second assembly are arranged in the valve body;
The valve body comprises a valve body outer shell, a valve body inner shell, a connecting flange and an outlet reducing pipe, wherein the outlet reducing pipe is fixedly arranged outside the side wall of the valve body outer shell and communicated with the side wall of the valve body outer shell; the valve body inner shell is integrally arranged inside the valve body outer shell and fixedly connected with the valve body outer shell, the connecting part of the valve body inner shell and the valve body outer shell is positioned at the outlet reducing pipe, and the outlet reducing pipe is communicated with the valve body inner shell; the valve body inner shell is of a hollow structure, the top and the bottom of the valve body inner shell are of hollow structures, the hollow rest part forms a cross support piece, a mounting through hole is reserved in the center of the cross support piece, spring sleeves are fixedly arranged on the outer sides of the cross support piece at the top and the bottom of the valve body inner shell, and a first pressure valve disc assembly and a second pressure valve disc assembly are correspondingly mounted in the upper spring sleeve and the lower spring sleeve respectively; the first pressure valve disc and the second pressure valve disc are respectively arranged on the inner side of the cross support piece of the valve body inner shell through the corresponding first pressure valve disc assembly and the corresponding second pressure valve disc assembly, and are in sealing opening and closing connection with the valve body inner shell.
2. The adjustable cracking pressure double valve disc high flow single call valve of claim 1, wherein: the first pressure valve disc assembly and the second pressure valve disc assembly have the same structure and comprise a pressure valve stud, a pressure valve spring cover plate, a spring pretightening force adjusting nut and a pressure valve bottom nut; the pressure valve stud passes through the corresponding spring sleeve and the through hole is arranged on the cross support piece; the pressure valve spring is sleeved on the pressure valve stud and is positioned in the spring sleeve; the pressure valve spring cover plate is sleeved on the pressure valve stud and is positioned at the outer end side of the pressure valve spring, and the spring pretightening force adjusting nut is arranged on the pressure valve stud and is positioned at the outer side of the pressure valve spring cover plate; the first pressure valve disc and the second pressure valve disc are respectively sleeved on corresponding pressure valve studs and are pressed and fixed through nuts at the bottom of the pressure valve.
3. The adjustable cracking pressure double valve disc high flow single call valve of claim 1, wherein: the valve body shell is of a hollow structure, the upper end and the lower end of the valve body shell are open, the valve cover is fixedly arranged at the upper end of the valve body shell, and the connecting flange and the lower end of the valve body shell of the valve body are integrally formed; the volume of the valve body inner shell is smaller than that of the valve body outer shell, and a gap is reserved between the valve body inner shell and the valve body outer shell.
4. A double-valve disc high flow single-call valve with adjustable cracking pressure as defined in claim 3, wherein: the valve body shell is fixedly connected with the valve cover through bolts.
5. The adjustable cracking pressure double valve disc high flow single call valve of claim 1, wherein: the inner sides of the top and the bottom of the valve body inner shell are respectively provided with a valve disc seat surrounding the valve body inner shell, and the diameter of the valve disc seat is larger than the hollowed-out diameter of the cross support piece and smaller than the outer diameter of the corresponding pressure valve disc I or pressure valve disc II; and annular valve disc sealing surfaces are arranged on the surfaces of the first pressure valve disc and the second pressure valve disc, which face the valve disc seat, and sealing gaskets which are opposite to the valve disc seat are fixedly arranged on the valve disc sealing surfaces.
6. The adjustable cracking pressure double valve disc high flow single call valve of claim 2, wherein: the pressure valve spring cover plate is of a sheet structure, and the outer diameter of the pressure valve spring cover plate is smaller than the inner diameter of the spring sleeve and larger than the maximum diameter of the spring pretightening force adjusting nut.
7. The adjustable cracking pressure double valve disc high flow single call valve of claim 2, wherein: the longitudinal central axis of the spring sleeve is coincident with the center of the installation through hole on the cross support piece, and the top of the spring sleeve is higher than the bottom surface of the spring pretightening force adjusting nut.
8. The adjustable cracking pressure double valve disc high flow single call valve of claim 1, wherein: the outer end of the outlet reducing pipe can be connected with and provided with a flame arrester or a rain cover part.
9. A double-valve disc high flow single-call valve with adjustable cracking pressure as defined in claim 3, wherein: the inner side wall of the straight barrel section of the outlet reducing pipe and the inner side wall of the opening at the lower end of the valve body shell are respectively provided with turbulence rings protruding out of the side wall and surrounding the turbulence rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322814774.5U CN220850875U (en) | 2023-10-20 | 2023-10-20 | Double-valve-disc high-flow single-calling valve capable of adjusting opening pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322814774.5U CN220850875U (en) | 2023-10-20 | 2023-10-20 | Double-valve-disc high-flow single-calling valve capable of adjusting opening pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220850875U true CN220850875U (en) | 2024-04-26 |
Family
ID=90748083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322814774.5U Active CN220850875U (en) | 2023-10-20 | 2023-10-20 | Double-valve-disc high-flow single-calling valve capable of adjusting opening pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220850875U (en) |
-
2023
- 2023-10-20 CN CN202322814774.5U patent/CN220850875U/en active Active
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