CN103196501A - Venturi tube with safety valve - Google Patents
Venturi tube with safety valve Download PDFInfo
- Publication number
- CN103196501A CN103196501A CN2013100988721A CN201310098872A CN103196501A CN 103196501 A CN103196501 A CN 103196501A CN 2013100988721 A CN2013100988721 A CN 2013100988721A CN 201310098872 A CN201310098872 A CN 201310098872A CN 103196501 A CN103196501 A CN 103196501A
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- Prior art keywords
- safety valve
- venturi tube
- piston
- pressure
- spring
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- 230000008602 contraction Effects 0.000 claims abstract description 19
- 230000007704 transition Effects 0.000 claims description 18
- 239000003463 adsorbent Substances 0.000 claims description 15
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004880 explosion Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 3
- 238000009792 diffusion process Methods 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 20
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Safety Valves (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention relates to a Venturi tube with a safety valve. The Venturi tube comprises a tube body. The internal portion of the tube body includes an inlet section, an adsorption cavity, a contraction section, a throat portion and a diffusion section. The safety valve is arranged inside the tube body and comprises a safety valve inlet and a safety valve outlet, a spring is arranged inside the safety valve, one end of a spring is connected with the top of the safety valve, the other end of the spring is connected with a piston, the safety valve outlet is the empty portion between an inner wall and an outer wall of the upper half portion of the safety valve, and the inner wall of the upper half portion of the safety valve is meshy. When pressure of the inlet section and the contraction section inside the Venturi tube is overlarge, the piston is gradually pressed by the pressure towards the top direction of the safety valve. When the piston is pressed to the meshy inner wall portion, gas or liquid overflows from mesh holes gradually and then flows towards the outside through the safety valve outlet, the pressure reduction effect is achieved, burst and even explosion is prevented, and a safety guarantee function is played well.
Description
Technical field
The present invention relates to a kind of Venturi tube, related in particular to a kind of Venturi tube with safety valve.
Background technology
Venturi tube is widely used in, control and the metering of industry bassoons such as oil, chemical industry, metallurgy, electric power footpaths fluid, have usable range wide, easy for installation, be convenient to characteristics such as long-time maintenance.But, lacking the guarantee of secure context in design, explosion appears in appearance because pressure is excessive easily, or even the accident of blast.
Summary of the invention
The present invention is directed to existing Venturi tube and occur this shortcoming of blast because pressure is excessive, proposed a kind of Venturi tube with safety valve.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals:
The Venturi tube of band safety valve comprises body, and body inside is divided into entrance, adsorbent chamber, contraction section, throat and diffuser, is provided with safety valve in body inside.
As preferably, safety valve is on entrance and near contraction section, and safety valve comprises safety valve entrance and safety valve outlet, and safety valve inside is provided with spring, and spring one end contacts with the safety valve top, and the other end contacts with piston.Safety valve is used for the release pipe internal pressure.
As preferably, the epimere of safety valve inwall partly is mesh.After pressure was pressed onto the epimere part with fluid, fluid can flow out by the epimere partial mesh topology, reduces pressure.
As preferably, the throat two ends arrange left transition section and right transition section respectively, and left transition section is fixedlyed connected with the circular cone anemostat with the circular cone collapsible tube with right transition section and cooperated.Left side transition section and right transition section can protect throat can not be out of shape when installing, and when fluid passes through, can slow down the suffered pressure of throat, thereby have guaranteed the accuracy of adsorbent chamber metering.
Be connected with adsorbent chamber as preferred laryngeal.Along with cross section in the body reduces gradually, pressure of compressed air increases, and it is big that flow velocity also becomes thereupon, produces a vacuum tightness in the import of adsorbent chamber, causes surrounding air to be inhaled in the pipe, flows to the flow velocity that increases gas in the diffusion body together along with pressurized air.
According to technical scheme of the present invention, when the inner entrance of Venturi tube and contraction section pressure just often, piston is withstood on the porch of safety valve by spring, makes fluid can't enter safety valve, whole Venturi tube is in the state of operate as normal.When the inner entrance of Venturi tube and contraction section pressure were excessive, piston will be pressed to the direction at safety valve top gradually by fluid.When piston was depressed into the mesh inner wall section, fluid will overflow from mesh gradually, flowed to outsidely again from safety valve outlet, had reached the effect of decompression, prevented explosion,
Even the appearance of blast situation, played the function of safety guarantee.When the Venturi tube internal pressure is recovered just often, piston again can by the elastic force of spring press again can safety valve the porch, make whole Venturi tube return to the state of operate as normal.
Description of drawings
Fig. 1 is the Venturi tube structural representation of band safety valve of the present invention.
Fig. 2 is partial enlarged drawing.
Fig. 3 is the structural drawing of safety valve.
The toponym that each number designation refers in the accompanying drawing is as follows: wherein 1-entrance, 2-adsorbent chamber, 3-contraction section, 4-diffuser, 5-safety valve, 51-piston, 52-spring, 53-safety valve entrance, the outlet of 54-safety valve, 6-body, 7-throat, 8-collapsible tube, 9-anemostat, 10-left transition section, 11-mesh, 12-epimere part, 13-right transition section.
Embodiment
Below in conjunction with accompanying drawing 1 and embodiment the present invention is described in further detail:
The Venturi tube of band safety valve comprises body 6, and body 6 inside are divided into entrance 1, adsorbent chamber 2, contraction section 3, throat 7 and diffuser 4, are provided with safety valve 5 in body 6 inside.
Safety valve 5 comprises safety valve entrance 53 and safety valve outlet 54, and there is spring 52 safety valve 5 inside, and spring 52 1 ends contact with safety valve 5 tops, and the other end contacts with piston 51, and the epimere part 12 of safety valve 5 inwalls is mesh 11.Throat 7 two ends arrange left transition section 10 and right transition section 13 respectively, and left transition section 10 is fixedlyed connected with circular cone anemostat 9 with circular cone collapsible tube 8 with right transition section 13 and cooperated.Left side transition section and right transition section can protect throat can not be out of shape when installing, and when fluid passes through, can slow down the suffered pressure of throat, thereby have guaranteed the accuracy of adsorbent chamber metering.Throat 7 is connected with adsorbent chamber 2, and along with cross section in the body 1 reduces gradually, pressure of compressed air increases, it is big that flow velocity also becomes thereupon, produce a vacuum tightness in the import of adsorbent chamber 2, cause surrounding air to be inhaled in the body 1, flow to the flow velocity that increases gas in the anemostat 9 along with pressurized air together.
Normal operating conditions:
Fluid from outside enters Venturi tube, arrives the entrance 1 of body 6 inside earlier, passes through contraction section 3 again.When the pressure of body 6 inner entrances 1 and contraction section 3 was in normal condition, safety valve 5 parts had neither part nor lot in work, and piston 51 is pressed in the position of the safety valve entrance 53 of safety valve 5 by the elastic force of spring 52, makes fluid can't enter safety valve 5.At contraction section 3 to throat 7 along with the reducing gradually of caliber size, fluid also thereupon from the coarse to fine, under the pressure effect of entrance 1, flow rate of fluid just increases gradually simultaneously.When fluid is gone out from contraction section 3, near throat 7, have height pressure reduction, thereby near the gas flow diffuser 4 driving causes to form vacuum state in the adsorbent chamber 2, makes adsorbent chamber 2 produce the ability of absorption.
The excessive state of pipe internal pressure:
Fluid from outside enters Venturi tube, arrives the entrance 1 of body 6 inside earlier, passes through contraction section 3 again.Excessive when the pressure of the inner entrance 1 of body, in the time of can't in time be alleviated by contraction section 3, safety valve 5 parts will enter duty.The inner excessive pressure of body 6 can be pressed to the piston 51 that is pressed in safety valve entrance 53 places by spring 52 originally the top of safety valve 5 gradually, when piston 51 is caused the epimere part 12 of safety valve 5 inwalls by the pressure pressure fully, fluid will overflow from the mesh of epimere, alleviate the excessive pressure in safety valve 5 inside, piston 51 more is pressed towards the position close to more from safety valve 5 tops, fluid will overflow from more many mesh, thereby alleviates the inner excessive pressure of body faster.When the body pressure inside is recovered normal condition, piston 51 will be rebounded by spring 52 and cause safety valve entrance 53 places, at this moment, the pressure of the inner entrance 1 of body and contraction section 3 is in normal condition, safety valve 5 parts have neither part nor lot in work, piston 51 is pressed in the position of the porch 53 of safety valve 5 by the elastic force of spring 52, make fluid can't enter safety valve 5, at contraction section 3 to throat 7 reducing gradually along with caliber size, fluid also thereupon from the coarse to fine, under the pressure effect of entrance 1, flow rate of fluid just increases gradually simultaneously.When fluid is gone out from contraction section 3, near throat 7, have height pressure reduction, thereby near the gas flow diffuser 4 driving causes to form vacuum state in the adsorbent chamber 2, makes adsorbent chamber 2 produce the ability of absorption.
When the inner entrance of Venturi tube and contraction section pressure just often, piston is withstood on the porch of safety valve by spring, makes gas or liquid can't enter safety valve, is in the state of operate as normal.When the inner entrance of Venturi tube and contraction section pressure were excessive, piston will be pressed to the direction at safety valve top gradually by pressure.When piston was depressed into the mesh inner wall section, gas or liquid will overflow from mesh gradually, flowed to the outside from the safety valve outlet again, had reached the effect of decompression, had prevented the appearance of explosion even blast situation, had well played the function of safety guarantee.Recover just often when the Venturi tube internal pressure, piston can be pushed back the porch of safety valve again again by the elastic force of spring, makes whole Venturi tube return to the state of operate as normal.In a word, the above only is preferred embodiment of the present invention, and all equalizations of doing according to the present patent application claim change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (5)
1. the Venturi tube of band safety valve comprises body (6), and body (6) inside is divided into entrance (1), contraction section (3), adsorbent chamber (2), throat (7) and diffuser (4), it is characterized in that: be provided with safety valve (5) in body (6) inside.
2. the Venturi tube of band safety valve according to claim 1, it is characterized in that: safety valve (5) is connected in entrance (1), and safety valve (5) comprises safety valve entrance (53) and safety valve outlet (54); Safety valve (5) inside is provided with spring (52), and spring (52) one ends contact with safety valve (5) top, and the other end contacts with piston (51).
3. the Venturi tube of band safety valve according to claim 1 is characterized in that: the epimere part (12) of safety valve (5) inwall is mesh (11).
4. the Venturi tube of band safety valve according to claim 1, it is characterized in that: throat (7) two ends arrange left transition section (10) and right transition section (13) respectively, and left transition section (10) is fixedlyed connected with circular cone anemostat (9) with circular cone collapsible tube (8) with right transition section (13) and cooperated.
5. the Venturi tube of band safety valve according to claim 1, it is characterized in that: throat (7) links to each other with adsorbent chamber (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310098872.1A CN103196501B (en) | 2013-03-25 | 2013-03-25 | With the Venturi tube of safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310098872.1A CN103196501B (en) | 2013-03-25 | 2013-03-25 | With the Venturi tube of safety valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103196501A true CN103196501A (en) | 2013-07-10 |
| CN103196501B CN103196501B (en) | 2016-01-27 |
Family
ID=48719201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310098872.1A Active CN103196501B (en) | 2013-03-25 | 2013-03-25 | With the Venturi tube of safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103196501B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6286367B1 (en) * | 1998-03-30 | 2001-09-11 | Schlumberger Technology Corporation | Method of evaluating the effluent of a hydrocarbon well by means of a multiphase flowmeter, and installation implementing the same |
| CN1940365A (en) * | 2005-09-30 | 2007-04-04 | 陈雪峰 | Safety valve with pressure releaser for electric water heater |
| CN101109571A (en) * | 2006-07-21 | 2008-01-23 | 斯德龙有限两合公司 | Water heater |
| CN102661627A (en) * | 2010-11-18 | 2012-09-12 | 托马斯及贝茨国际股份有限公司 | Premix air heater |
-
2013
- 2013-03-25 CN CN201310098872.1A patent/CN103196501B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6286367B1 (en) * | 1998-03-30 | 2001-09-11 | Schlumberger Technology Corporation | Method of evaluating the effluent of a hydrocarbon well by means of a multiphase flowmeter, and installation implementing the same |
| CN1940365A (en) * | 2005-09-30 | 2007-04-04 | 陈雪峰 | Safety valve with pressure releaser for electric water heater |
| CN101109571A (en) * | 2006-07-21 | 2008-01-23 | 斯德龙有限两合公司 | Water heater |
| CN102661627A (en) * | 2010-11-18 | 2012-09-12 | 托马斯及贝茨国际股份有限公司 | Premix air heater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103196501B (en) | 2016-01-27 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20151221 Address after: 315105 No. 959, faith Road, Ningbo, Zhejiang, Yinzhou District Applicant after: The dynamo-electric Manufacturing Co., Ltd of Zhejiang Ou Laike Address before: Two building, No. four, building 959, 315100 faith Road, Ningbo, Zhejiang, Yinzhou District Applicant before: Liu Xianguo |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |