CN210728488U - Pressure vessel device - Google Patents
Pressure vessel device Download PDFInfo
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- CN210728488U CN210728488U CN201920873553.6U CN201920873553U CN210728488U CN 210728488 U CN210728488 U CN 210728488U CN 201920873553 U CN201920873553 U CN 201920873553U CN 210728488 U CN210728488 U CN 210728488U
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Abstract
The utility model provides a pressure vessel device, include: the pressure container is provided with a bottom wall, a side wall and a container opening, and is transversely arranged when in use; the bottle head valve assembly comprises a bottle head valve, a siphon and a suction port section, the bottle head valve is arranged at a container opening, the first end of the siphon is communicated with the bottle head valve, the second end of the siphon is arranged in the pressure container and extends towards the side wall, the first end of the suction port section is connected with the second end of the siphon, the second end of the suction port section has a preset distance with the side wall, and the cross sectional area from the first end of the suction port section to the second section of the suction port section is gradually increased. The technical scheme of the utility model the great problem of resistance loss when the medicament is discharged to the pressure vessel device among the prior art has been solved effectively.
Description
Technical Field
The utility model relates to a fire-fighting equipment's technical field particularly, relates to a pressure vessel device.
Background
At present, the fire fighting device is generally used in a vertical mode when in use. In particular, the liquid in the container bottle (container) of most fire fighting devices is ejected by driving the liquid out of the siphon tube by pressure, but this method is to ensure that the container bottle (container) is placed vertically to ensure that the liquid suction port of the siphon tube is positioned at the bottom of the bottle, which is favorable for the liquid in the bottle to be ejected as much as possible. However, in some application scenarios, the container bottle needs to be laid down, and due to the structural characteristics of the existing fire fighting device, when the fire fighting device is laid down for use, a large amount of liquid in the container bottle cannot be used.
In the prior art, a container bottle is also placed horizontally, the medicament in the container bottle is discharged out of the container bottle through a siphon, a liquid inlet of the siphon is generally in a flat cut or inclined cut mode, and the siphon with the structure has larger resistance and lower conveying efficiency when adsorbing the medicament.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a pressure vessel device to solve the problems of the prior art that the resistance loss is large and the transport efficiency is low when the drug is discharged.
In order to achieve the above object, the present invention provides a pressure vessel device, including: the pressure container is provided with a bottom wall, a side wall and a container opening, and is transversely arranged when in use; the bottle head valve assembly comprises a bottle head valve, a siphon and a suction port section, the bottle head valve is arranged at a container opening, the first end of the siphon is communicated with the bottle head valve, the second end of the siphon is arranged in the pressure container and extends towards the side wall, the first end of the suction port section is connected with the second end of the siphon, the second end of the suction port section has a preset distance with the side wall, and the cross sectional area from the first end of the suction port section to the second section of the suction port section is gradually increased.
Furthermore, the suction port section is a horn-shaped revolution curved surface with a revolution bus in an arc line, or the suction port section is in a cone frustum shape, or the suction port section is in a multi-surface frustum shape.
Further, when the rotating generatrix of the suction port section is an arc, the arc is 1/4 circular arc.
Further, when the rotating generatrix of the suction port section is an arc, the arc is 1/4 elliptic arc or other streamline curve sections.
Further, the siphon includes first pipe section, circular arc section and second pipe section, and the circular arc section is connected between first pipe section and second pipe section.
Furthermore, the R/D of the arc section is between 3 and 5, R is the circular radius of the central axis of the arc section, and D is the pipe inner diameter of the arc section.
Further, the suction port section is of a horn mouth-shaped structure, and the pressure container device meets the following requirements:
wherein: c-a predetermined distance between the second end of the suction port section and the sidewall;
DL-the maximum diameter of the bell-mouth-like structure of the suction opening section;
Di-the inner diameter of the siphon;
vi-average flow velocity over the cylindrical surface of the second pipe section;
vi' -average flow rate of the flared cross section of the suction section;
vi"-average flow rate in the siphon.
Further, the pressure vessel arrangement also satisfies:
wherein: q-is the flow rate through the siphon in unit time;
d is the diameter of the bell mouth of the suction port section;
hmin-is the critical depth of flooding.
Further, the pressure vessel arrangement also satisfies:
ic＞3.5Di
wherein: lc-the horizontal distance from the suction port section to the front inner side wall of the pressure vessel;
Di-inner diameter of siphon.
Furthermore, the pressure container device also comprises a shell and a release structure, at least one pressure container is provided, the bottle head valve assemblies and the pressure containers are arranged in a one-to-one correspondence mode, and the release structure is communicated with the pressure containers.
Use the technical scheme of the utility model, pressure vessel device is when using, and the inside medicament of pressure vessel passes through siphon discharge pressure vessel. The medicament first passes through the mouthpiece section, the second end of the mouthpiece section is an inlet end, the cross-sectional area of the inlet end is enlarged, which greatly reduces the resistance loss of the medicament entering the siphon. The technical scheme of the utility model the great problem of resistance loss when the medicament is discharged to the pressure vessel device among the prior art has been solved effectively.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic structural view of an embodiment of a pressure vessel arrangement according to the invention;
FIG. 2 shows a schematic view of another angle of construction of the pressure vessel arrangement of FIG. 1;
FIG. 3 shows a schematic partial structural view of the pressure vessel arrangement of FIG. 1; and
fig. 4 shows a schematic view of the structure of the suction port section of the pressure vessel arrangement of fig. 1.
Wherein the figures include the following reference numerals:
10. a pressure vessel; 20. a bottle head valve assembly; 21. a bottle head valve; 22. a siphon tube; 23. a suction port section.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 to 4, the pressure vessel device of the present embodiment includes: a pressure vessel 10 and a cylinder head valve assembly 20. The pressure vessel 10 has a bottom wall, side walls and a vessel mouth, the pressure vessel 10 being arranged transversely in use. The bottle head valve assembly 20 includes a bottle head valve 21, a siphon 22 and a suction port section 23, the bottle head valve 21 is disposed at a container port, a first end of the siphon 22 is communicated with the bottle head valve 21, a second end of the siphon 22 is disposed in the pressure container 10 and extends toward the sidewall, a first end of the suction port section 23 is connected with a second end of the siphon 22, a second end of the suction port section 23 has a predetermined distance from the sidewall, and a cross-sectional area from the first end of the suction port section 23 to the second end of the suction port section 23 is gradually increased.
With the solution of the present embodiment, when the pressure container apparatus is used, the chemical inside the pressure container 10 is discharged out of the pressure container 10 through the siphon tube 22. The medicament first passes through the mouthpiece section 23, the second end of the mouthpiece section 23 being the inlet end, the cross-sectional area of the inlet end being enlarged, which greatly reduces the drag loss of the medicament entering the siphon. The technical scheme of this embodiment has solved the pressure vessel device among the prior art effectively and has discharged the problem that resistance loss is great, transport efficiency is low when medicament.
As shown in fig. 4, in the technical solution of this embodiment, the suction section 23 is a trumpet-shaped curved surface of revolution with a curved line of revolution, and the curved line of revolution is a curved line, or the suction section 23 is a truncated cone, or the suction section 23 is a multi-faceted frustum. The three forms of the suction port section 23 are shown in fig. 4, the suction port section 23 on the left side of fig. 4 is in a frustum shape, the arc line of the suction port section 23 in the middle of fig. 4 is an 1/4 arc, and the arc line of the suction port section 23 on the right side of fig. 4 is an 1/4 elliptical arc.
Specifically, suction inlet section 23 adopts conical horn mouth, and the streamline converges gradually in the import department, and mouth of pipe internal wall face separation and swirl phenomenon weaken, and local resistance is less (resistance coefficient ξ is 0.2 ~ 0.4). simultaneously, the horn mouth diameter enlarges makes the velocity of flow less, and the regional velocity of flow discontinuity in the outside of pipe is unobvious, weakens formation and the development of swirl to some extent.
Specifically, the suction port section 23 adopts an 1/4 circular arc curved surface bell mouth, the streamline at the pipe orifice is consistent with the shape of the pipe wall, so that wall separation and vortex cannot occur during confluence, and the local resistance is very small (the resistance coefficient ξ is 0.04).
Specifically, the suction port section 23 adopts an 1/4 elliptic curved surface bell mouth form, which is similar to the pipe orifice flow condition of a circular arc bell mouth form, and the local resistance is very small (the resistance coefficient ξ is 0.04). in the area outside the suction port section 23, because the flow velocity at the inlet is still large due to the small expansion degree of the bell mouth, the flow velocity discontinuity is still obvious, and the control effect on the liquid level vortex is not as good as that of the 1/4 circular arc bell mouth.
As shown in fig. 1 to 3, in the solution of the present embodiment, the siphon 22 includes a first pipe section, a circular arc section and a second pipe section, and the circular arc section is connected between the first pipe section and the second pipe section. The structure has the advantages of low processing cost, convenient arrangement and small resistance loss of the siphon 22. The bend angle theta of the first and second sections of siphon 22 is between 80 deg. and 160 deg., as shown in fig. 1.
As shown in fig. 1, in the solution of this embodiment, the radius of the arc section is between 3 and 5, R is the bending radius of the central axis of the arc section, D is the pipe inner diameter of the first pipe section of the siphon pipe, the downward bending part of the siphon pipe 22 will generate centrifugal force when passing through the pipe section, which causes the secondary flow and vortex in the pipe to increase the local resistance, the smaller the bending radius of the siphon pipe 22 is, the larger the pipe diameter is, the larger the local resistance loss is, for a 90 ° smooth bend pipe, when the bending radius is 3 to 5 times the pipe diameter, the resistance coefficient can be reduced to a low point (ξ is 0.13 to 0.2), and the resistance coefficient smaller than the corresponding 45 ° bend pipe is about 1/7 of the resistance coefficient of the corresponding 90 ° bend pipe (R ≦ D).
As shown in fig. 1, in the solution of the present embodiment, the suction port section 23 is a bell-mouth-shaped structure, r is a bending radius of an outer wall of the bell mouth, and the pressure vessel apparatus satisfies:
wherein: c-a predetermined distance between the second end of the suction port section and the sidewall;
DL-the maximum diameter of the bell-mouth-like structure of the suction opening section;
Di-the inner diameter of the siphon;
vi-average flow velocity over the cylindrical surface of the second pipe section;
vi' -average flow rate of the flared cross section of the suction section;
vi"-average flow rate in the siphon.
Suppose vi＝vi', then c is 0.25DL. When the suspension height (predetermined distance) c is more than or equal to 0.3DLIn time, the liquid inlet efficiency is not influenced; when the height c is suspended<0.2DLAt that time, the efficiency of the feed liquid starts to change. The area of the cylindrical surface enclosed from the edge of the general bellmouth to the bottom is slightly larger than the area of the end surface of the bellmouth, and the suspension height is calculated according to the formula: c ═ 0.3 to 0.5DL＝(0.5～1)Di。
As shown in fig. 1 to 3, in the solution of the present embodiment, the pressure vessel apparatus further satisfies:
wherein: q-is the flow rate through the siphon in unit time;
d is the diameter of the bell mouth of the suction port section;
hmin-critical flooding depth.
The submergence depth acts as a barrier to the development of liquid level vortices, with the greater the submergence depth the greater the velocity ring volume required for the vortex tail to reach the inlet. h is the height of the liquid surface from the inlet of the suction section 23. And when the inlet flow velocity is increased, the vortex is promoted to be developed quickly. The ratio of the critical submerging depth of the liquid inlet to the diameter (or the section width) of the pipe orifice is in direct proportion to the Froude number. Namely, it is
In the formula: hmin-critical flooding depth; Fr-Froude number
D is the diameter of the pipe orifice or the width of the section of the flow beam; v-flow velocity v-4Q/(π D)2)
Obtaining a critical submergence depth calculation formula:
under the condition of a certain flow rate, the critical submerging depth is in direct proportion to the flow rate and is in inverse proportion to the 1.5 th power of the diameter of the bell mouth of the suction port section, namely the critical submerging depth is smaller when the diameter of the bell mouth is larger under the condition of the certain flow rate. However, the diameter of the bell mouth should not be too large, and the flow state of the liquid inlet will be deteriorated if the diameter of the bell mouth is too large. The appropriate flare diameter can be determined with the critical submergence depth satisfied.
The liquid inlet submerging height of the siphon pipe of the fire extinguishing device with the transverse container is designed to meet the requirement of the spraying performance of the fire extinguishing device, and the submerging depth of the liquid inlet is still not less than the critical submerging depth when the fire extinguishing agent of the device is released 1/2 in principle. I.e. h in the solution of the present embodimentm≥hmin. In the formula: hm-the submergence depth of the liquid inlet when the fire extinguishing agent is released 1/2.
As shown in fig. 1, in the solution of the present embodiment, the pressure vessel apparatus further satisfies: lc＞3.5Di
Wherein: lc-the horizontal distance from the suction port section to the front inner side wall of the pressure vessel;
Di-inner diameter of siphon.
The distance between the suction port section and the side wall of the container is that in order to enable liquid-phase medium to smoothly enter the siphon from the periphery, a sufficient horizontal distance is kept between the suction port section and the side wall of the container at the periphery, and the minimum distance is more than 3.5 times of the pipe diameter. lc＞3.5Di
In the formula: lc-horizontal distance from liquid inlet of siphon tube to front inner side wall of container.
In addition, the liquid inlet of the suction port section 23 in the long axis direction of the pressure vessel should be located close to the middle of the pressure vessel 10, so as to reduce the influence of the levelness deviation in the long axis direction of the pressure vessel 10, and simultaneously reduce the flow state non-uniformity caused by the liquid phase horizontal movement due to the liquid inlet close to the end.
As shown in fig. 1, in the solution of the present embodiment, the pressure vessel apparatus further includes a housing and a release structure, at least one pressure vessel 10 is provided, the cylinder head valve assemblies 20 are disposed in one-to-one correspondence with the pressure vessels 10, and the release structure is communicated with the pressure vessels 10. The casing is a cuboid casing surrounded by six plate bodies. The pressure container is arranged in the shell, the releasing structure comprises a releasing part and a connecting pipeline, and the arrangement position of the connecting pipeline can be on the same side of the containers or among the containers. The release part is a spray head. The release portion can be a plurality of, and the connecting line is a plurality of exports, and each export all is connected with the shower nozzle.
In the technical scheme of this embodiment, the pressure vessel device includes a distributor, the distributor is a cross including a first interface, a second interface, a third interface and a fourth interface, the outlets of the plurality of pressure vessels are connected with the first interface, and the release structure is connected with the second interface. The provision of the distributor reduces the layout of the lines. The third interface is connected with the pressure detection system, the fourth interface is connected with the pressure signal feedback structure, and the pressure signal feedback structure can be communicated with the central control room so as to transmit the pressure signal of the pressure container device in real time.
In the solution of this embodiment, as shown in fig. 1, the pressure vessel arrangement comprises a valve arranged between the outlet of the plurality of pressure vessels and the release structure. The valve is convenient to control the fire extinguishing agent in the pressure container, and can be closed when parts need to be replaced. The valve can be the solenoid valve, realizes the automatic switching of solenoid valve through the coordinated control structure, for example when sensing when having the condition of a fire, the coordinated control structure control solenoid valve is opened.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A pressure vessel arrangement, comprising:
a pressure vessel (10), said pressure vessel (10) having a bottom wall, a side wall and a vessel mouth, said pressure vessel (10) being disposed transversely in use;
the bottle head valve assembly (20) comprises a bottle head valve (21), a siphon (22) and a suction port section (23), the bottle head valve (21) is arranged at the container opening, a first end of the siphon (22) is communicated with the bottle head valve (21), a second end of the siphon (22) is arranged in the pressure container (10) and extends towards the side wall, a first end of the suction port section (23) is connected with a second end of the siphon (22), a second end of the suction port section (23) has a preset distance with the side wall, and the cross-sectional area of the first end of the suction port section (23) to the second end of the suction port section (23) is gradually increased.
2. The pressure vessel arrangement according to claim 1, characterized in that the suction port section (23) is a trumpet-shaped surface of revolution with a generatrix of revolution being an arc, or the suction port section (23) is a truncated cone, or the suction port section (23) is a multi-faceted truncated pyramid.
3. A pressure vessel arrangement according to claim 2, characterised in that when the generatrix of revolution of the suction port section (23) is an arc, said arc is 1/4.
4. Pressure vessel arrangement, according to claim 2, characterized in that the suction section (23) has an arc line, which is 1/4 elliptical or a streamlined curve section, when the generatrix of the revolution is an arc line.
5. The pressure vessel arrangement according to any of claims 1 to 4, characterized in that the siphon (22) comprises a first pipe section, a circular arc section and a second pipe section, the circular arc section being connected between the first pipe section and the second pipe section.
6. The pressure vessel arrangement according to claim 5, wherein the circular arc segment has a ratio R/D between 3 and 5, R being the circular radius of the central axis of the circular arc segment and D being the pipe inner diameter of the circular arc segment.
7. The pressure vessel arrangement according to claim 5, wherein the suction port section (23) is of a bell mouth-like structure, the pressure vessel arrangement satisfying:
wherein: c-a predetermined distance between the second end of the suction port section and the sidewall;
DL-the maximum diameter of the bell-mouth-like structure of the suction opening section;
Di-the inner diameter of the siphon;
vi-average flow velocity over the cylindrical surface of the second pipe section;
vi' -average flow rate of the flared cross section of the suction section;
vi"-average flow rate in the siphon.
8. The pressure vessel arrangement according to claim 5, wherein said pressure vessel arrangement further fulfils:
wherein: q-is the flow rate through the siphon in unit time;
d is the diameter of the bell mouth of the suction port section;
hmin-critical depth of flooding.
9. The pressure vessel arrangement according to claim 5, wherein said pressure vessel arrangement further fulfils:
lc＞3.5Di
wherein: lc-the horizontal distance from the suction port section to the front inner side wall of the pressure vessel;
Di-inner diameter of siphon.
10. The pressure vessel arrangement according to any of claims 1 to 4, further comprising a housing and a release structure, the pressure vessel (10) being at least one, the topping valve assembly (20) being arranged in one-to-one correspondence with the pressure vessel (10), the release structure being in communication with the pressure vessel (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920873553.6U CN210728488U (en) | 2019-06-10 | 2019-06-10 | Pressure vessel device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920873553.6U CN210728488U (en) | 2019-06-10 | 2019-06-10 | Pressure vessel device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210728488U true CN210728488U (en) | 2020-06-12 |
Family
ID=70979601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920873553.6U Active CN210728488U (en) | 2019-06-10 | 2019-06-10 | Pressure vessel device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210728488U (en) |
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2019
- 2019-06-10 CN CN201920873553.6U patent/CN210728488U/en active Active
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