CN103196501B - With the Venturi tube of safety valve - Google Patents
With the Venturi tube of safety valve Download PDFInfo
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- CN103196501B CN103196501B CN201310098872.1A CN201310098872A CN103196501B CN 103196501 B CN103196501 B CN 103196501B CN 201310098872 A CN201310098872 A CN 201310098872A CN 103196501 B CN103196501 B CN 103196501B
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- venturi tube
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Abstract
The present invention relates to a kind of Venturi tube with safety valve, comprise body, tubular body is divided into entrance, adsorbent chamber, contraction section, throat and diffuser, be provided with safety valve at tubular body, safety valve comprises safety valve entrance and safety valve outlet, and there is spring safety valve inside, spring one end is connected with safety valve top, the other end is connected with piston, the part of safety valve outlet between the inwall of safety valve the first half and outer wall be sky, and the inwall of safety valve the first half is mesh.When Venturi tube interior inlet section and contraction section pressure excessive time, piston will be pressed to the direction at safety valve top gradually by pressure, when piston is depressed into mesh inner wall section, gas or liquid will overflow gradually from mesh, again from safety valve outlet flow externally, reach the effect of decompression, prevent the appearance of explosion, even explosive event, well serve the function of safety guarantee.
Description
Technical field
The present invention relates to a kind of Venturi tube, particularly relate to a kind of Venturi tube with safety valve.
Background technology
Venturi tube, is widely used in, the control of the industry Large Diameter Pipeline fluids such as oil, chemical industry, metallurgy, electric power and metering, have usable range wide, easy for installation, be convenient to the features such as long-time maintenance.But, lack the guarantee of secure context in design, easily occur because of the excessive appearance explosion of pressure, or even the accident of blast.
Summary of the invention
The present invention is directed to existing Venturi tube and occur this shortcoming of exploding because pressure is excessive, propose 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:
With the Venturi tube of safety valve, comprise body, tubular body is divided into entrance, adsorbent chamber, contraction section, throat and diffuser, is provided with safety valve at tubular body.
As preferably, safety valve is on entrance and near contraction section, safety valve comprises safety valve entrance and safety valve outlet, and safety valve inside is provided with spring, spring one end and safety valve top contact, the other end and piston contact.Safety valve is used for alleviating overpressure.
As preferably, the upper portion of safety valve inwall is mesh.After fluid is pressed onto upper portion by pressure, fluid can be flowed out by upper portion reticulate texture, reduces pressure.
As preferably, throat two ends arrange left transition section and right transition section respectively, and left transition section and right transition section and circular cone collapsible tube are fixedly connected with circular cone anemostat and coordinate.Left transition section and right transition section can protect throat can not be out of shape when installation, when fluid passes through, can slow down the pressure suffered by throat, thus ensure that the accuracy that adsorbent chamber is measured.
As preferably, throat is connected with adsorbent chamber.Along with in body, cross section reduces gradually, and compressed-air actuated pressure increases, and flow velocity also becomes large thereupon, produces a vacuum tightness, cause surrounding air to be inhaled in pipe in the import of adsorbent chamber, along with pressurized air flows to the flow velocity increasing gas in diffusion body together.
According to technical scheme of the present invention, when Venturi tube interior inlet section and contraction section pressure normal time, piston, by the porch of spring top at safety valve, makes fluid enter safety valve, and whole Venturi tube is in the state of normal work.When Venturi tube interior inlet section and contraction section pressure excessive time, piston will be pressed to the direction at safety valve top gradually by fluid.When piston is depressed into mesh inner wall section, fluid will overflow gradually from mesh, then from safety valve outlet flow externally, reaches the effect of decompression, prevents the appearance of explosion, even explosive event, serves the function of safety guarantee.When Venturi tube internal pressure is recovered normal, piston can be pressed again the porch of meeting safety valve again by the elastic force of spring, make whole Venturi tube return to the state of normal work.
Accompanying drawing explanation
Fig. 1 is the venturi tube structure schematic diagram 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 in accompanying drawing, each number designation refers to 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-upper portion, 13-right transition section.
Embodiment
Below in conjunction with accompanying drawing 1 and embodiment, the present invention is described in further detail:
Embodiment 1
With the Venturi tube of safety valve, comprise body 6, body 6 inside is divided into entrance 1, adsorbent chamber 2, contraction section 3, throat 7 and diffuser 4, is 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, spring 52 one end and safety valve 5 top contact, and the other end contacts with piston 51, and the upper portion 12 of safety valve 5 inwall is mesh 11.Throat 7 two ends arrange left transition section 10 and right transition section 13 respectively, and left transition section 10 and right transition section 13 and circular cone collapsible tube 8 are fixedly connected with circular cone anemostat 9 and coordinate.Left transition section and right transition section can protect throat can not be out of shape when installation, when fluid passes through, can slow down the pressure suffered by throat, thus ensure that the accuracy that adsorbent chamber is measured.Throat 7 is connected with adsorbent chamber 2, and along with in body 1, cross section reduces gradually, and compressed-air actuated pressure increases, flow velocity also becomes large thereupon, produce a vacuum tightness in the import of adsorbent chamber 2, cause surrounding air to be inhaled in body 1, along with pressurized air flows to the flow velocity increasing gas in anemostat 9 together.
Normal operating conditions:
Fluid from outside enters Venturi tube, first arrives the entrance 1 of body 6 inside, then through contraction section 3.When the pressure of body 6 interior inlet section 1 and contraction section 3 is in normal condition, safety valve 5 part has 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, make fluid cannot enter safety valve 5.Arrive the gradually reduction of throat 7 along with caliber size at contraction section 3, also thereupon from the coarse to fine, simultaneously under the pressure effect of entrance 1, the flow velocity of fluid just increases fluid gradually.When fluid is gone out from contraction section 3, near throat 7, there is height pressure reduction, thus the gas flow diffuser 4 near driving, cause in adsorbent chamber 2 and form vacuum state, make adsorbent chamber 2 produce the ability of absorption.
The excessive state of overpressure:
Fluid from outside enters Venturi tube, first arrives the entrance 1 of body 6 inside, then through contraction section 3.When the pressure of tubular body entrance 1 is excessive, when cannot be alleviated in time by contraction section 3, safety valve 5 part will enter duty.The inner excessive pressure of body 6 can the top originally being pressed to safety valve 5 by the piston 51 that spring 52 is pressed in safety valve entrance 53 place gradually, when piston 51 is caused the upper portion 12 of safety valve 5 inwall by pressure pressure completely, fluid will overflow from the mesh of epimere, alleviate the pressure that safety valve 5 is inner excessive, piston 51 be more pressed towards from safety valve 5 top more close to position, fluid will overflow from more mesh, thus alleviates the excessive pressure of tubular body faster.When the pressure recover normal condition of tubular body, piston 51 will be rebounded by spring 52 and cause safety valve entrance 53 place, now, the pressure of tubular body entrance 1 and contraction section 3 is in normal condition, safety valve 5 part has 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 cannot enter safety valve 5, the gradually reduction of throat 7 along with caliber size is arrived at contraction section 3, fluid also thereupon from the coarse to fine, simultaneously under the pressure effect of entrance 1, the flow velocity of fluid just increases gradually.When fluid is gone out from contraction section 3, near throat 7, there is height pressure reduction, thus the gas flow diffuser 4 near driving, cause in adsorbent chamber 2 and form vacuum state, make adsorbent chamber 2 produce the ability of absorption.
When Venturi tube interior inlet section and contraction section pressure normal time, piston, by the porch of spring top at safety valve, makes gas or liquid enter safety valve, is in the state of normal work.When Venturi tube interior inlet section and contraction section pressure excessive time, piston will be pressed to the direction at safety valve top gradually by pressure.When piston is depressed into mesh inner wall section, gas or liquid will overflow gradually from mesh, then from safety valve outlet flow externally, reach the effect of decompression, prevent the appearance of explosion, even explosive event, well serve the function of safety guarantee.When Venturi tube internal pressure is recovered normal, piston can be pushed back again the porch of safety valve again by the elastic force of spring, makes whole Venturi tube return to the state of normal work.
In a word, the foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (3)
1. be with the Venturi tube of safety valve, comprise body (6), 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, safety valve (5) is connected to 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), spring (52) one end and safety valve (5) top contact, the other end contacts with piston (51), the upper portion (12) of safety valve (5) inwall is mesh (11), when entrance (1) pressure is excessive, the inner excessive pressure of body (6) can the top originally being pressed to safety valve (5) by the piston (51) that spring (52) is pressed in safety valve entrance (53) place gradually, when piston (51) is caused upper portion (12) of safety valve (5) inwall completely by pressure pressure, fluid will overflow from the mesh (11) of safety valve (5) epimere, when the pressure recover normal condition of tubular body, piston (51) will be sprung back to safety valve entrance (53) place by spring (52).
2. 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, left transition section (10) and right transition section (13) and circular cone collapsible tube (8) are fixedly connected with circular cone anemostat (9) and coordinate.
3. the Venturi tube of band safety valve according to claim 1, is characterized in that: throat (7) is connected 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 CN103196501A (en) | 2013-07-10 |
| CN103196501B true CN103196501B (en) | 2016-01-27 |
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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 |
|---|---|
| CN103196501A (en) | 2013-07-10 |
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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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