CN2559395Y - Inclined hole bar-shape infloating valve - Google Patents
Inclined hole bar-shape infloating valve Download PDFInfo
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- CN2559395Y CN2559395Y CN 02265549 CN02265549U CN2559395Y CN 2559395 Y CN2559395 Y CN 2559395Y CN 02265549 CN02265549 CN 02265549 CN 02265549 U CN02265549 U CN 02265549U CN 2559395 Y CN2559395 Y CN 2559395Y
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- valve
- inclined hole
- rectangular
- liquid
- valve block
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Abstract
The utility model provides a gas-liquid contact element on a tray, namely an inclined hole and strip shape floating valve, which is a long strip bench type, and consists of a valve plate of a long strip shape and a valve leg supported the valve plate. The surface of the valve plate is opened with side blown inclined holes of each two back to back, a transition region between the valve plate and the valve leg forms a contractible step so as to make up a supporting arm. The floating valve is positioned in the rectangular valve hole on the tray and can float from up to down, the main body adopts strip (rectangle) structure, the abrasion even exfoliation fault caused by valve rotating can be avoided, thereby increasing the fastness of the structure; simultaneously, in practical operation, two long edges pf the strip shape floating valve are in parallel with the liquid flow direction and form a rectangular air flow channel with the two edges of the rectangular valve hole on the tray, thus the air flow is perpendicular to the liquid flow, and a good gas-liquid contact condition is created; the valve leg can plug ''back-mixing'' and ''fore-mixing'' flows and is propitious to improve mass transfer force.
Description
Technical field
The utility model relates to the gas-liquid contact element in a kind of chemical industry equipment, particularly plate column, is exactly the float valve in the plate column specifically.
Background technology
According to the perforate situation of the gas-liquid contact element in the plate column, plate column can be divided into two classes: one is the changeless fixing hole column plate of percent opening; Two is the self-adjustable float valve type of percent opening column plate.Wherein float valve type column plate is big because of its operating flexibility, efficient is high, make easy for installation being used widely.
Float valve tray is made up of float valve, column plate, overflow mechanism and seal pot four parts usually.Press the difference of float valve architectural feature, float valve can be divided into positive perforate and oblique two kinds of forms of perforate, and wherein positive perforate has F1 float valve, cross float valve, bar shaped (rectangle) float valve, trapezoidal float valve, a guide float-valve etc.; Tiltedly perforate as floating tongue.
The F1 float valve in use, air-flow is radially from circumferential periphery ejection, the jet consistent with the liquid flow path direction will cause " preceding the mixing " of liquid phase, the jet opposite with the liquid flow path direction then causes " back-mixing " of liquid phase." preceding mixing " and " back-mixing " all can reduce mass transfer force, thereby reduce plate efficiency.In addition, circular float valve is because of circumferentially fixing rotation easily, cause float valve wearing and tearing, come off, finally cause the gas phase short circuit, plate efficiency seriously descends.
Rectangular valve makes the valve leg to minor face usually, the shutoff air-flow is two sides ejection from front and back, be that air-flow can only be along the direction ejection vertical with liquid stream, thereby suppressed the concentration mixing of liquid on the plate effectively, has higher mass-transfer efficiency, advance but can not promote liquid stream, be unfavorable for high liquid phase load operation.
General float valve, not perforate on the valve gap, gas phase is only from the ejection of valve side, therefore above valve gap in the certain altitude, the solution-air loose contact.
Tiltedly the floating tongue primary air direction of perforate is consistent with the liquid flow path direction, forms so-called also stream and sprays.Though so can suppress the back-mixing of liquid effectively, liquid layer approaches on the plate because of gas constantly quickens to cause to liquid, and the mass transfer point efficiency is low.In addition, mist is along the distribution triangular in shape of liquid flow path direction, and the tower tray outlet area is the corner position that triangle sprays, and low in a large number dope body is entrained to the high dense inlet region of top plate, causes the back-mixing of adjacent two layers plate, reduces full tower separative efficiency.
From Practical Calculation, suppose that when valve is opened fully its maximum opening is h (being the distance between column plate upper surface and valve plate lower surface), and the homalographic aperture is h
e(promptly under this aperture, the minimum sectional area that air flow stream is crossed equates with the perforated area of column plate gas channel) is then for general float valve, h＜h
e(F1 float valve h/h for example
e≈ 0.859).Resistance coefficient (resistance coefficient is 5.34 behind the F1 float valve standard-sized sheet) after this has limited the operating flexibility of float valve undoubtedly and has increased standard-sized sheet, promptly under identical percent opening and gas, liquid load, plate pressure drop is bigger.
Summary of the invention
In view of the defective that above-mentioned column plate float valve exists, the utility model aims to provide a kind of good gas-liquid contact conditions of creating, and helps improving the inclined hole rectangular valve of mass transfer force.
Structure of the present utility model is rectangular stool shape substantially, constitute by the valve block of a strip and the valve leg of this valve block of support, the surface that is characterized in this valve block has opposing in twos side-blown inclined hole, the width of its valve block is greater than the width of valve leg, thereby makes transitional region between the two form a step that dwindles and constitute support arm.Also have a guide hole that vertically runs through on wherein one the surface of described valve leg; And the bottom of two valve legs is stuck up to turning up respectively and is formed the valve pin.The edge on long limit, the both sides of this external valve plate is formed with recessed valve lip respectively.The long limit of its middle valve plate is preferably 1.5 to 4 with the ratio of minor face.The hole count of the inclined hole of opening is an even number on the valve block, and staggers mutually, and is opposing in twos, and this inclined hole to dehisce highly be 4～8mm.
Because the utility model main body adopts bar (square) shape float valve structure, wearing and tearing even the release failure of avoiding the valve body rotation to cause, the fixing of raising structure; This rectangular valve is in tower plate structure simultaneously, and its two long limit is parallel with the liquid flow path direction, and the gas channel with the both sides formation rectangle of rectangle valve opening on the column plate intersects vertically air-flow and liquid stream, has created good gas-liquid contact conditions; The valve leg, but shutoff " back-mixing " and " preceding mixing " air-flow help improving mass transfer force; The valve lip that the long limit of valve block is gone out forms reducing, can promote the air-flow turbulence, and wake flow forms whirlpool, helps mass transfer; The guide hole of being gone out on the valve leg makes valve block open the back and advances from the air-flow promotion liquid stream that this guide hole blows out, and eliminates the dead band, reduces gradient of liquid level; Load hour, valve body sinks, guide hole is closed, and blows the negative effect of thin liquid layer in the time of can not producing underload; The inclined hole that the valve back is left, except the air-flow dead band of avoiding valve back side, and the inclined hole of opening is got even rows, adjacent two row's inclined holes are staggered opposing, the primary air projection is vertical with the liquid flow path direction, liquid is pushed to column plate both sides arch area, avoided the deceleration of arch area liquid stream, the gentle flow short-circuit that remains in a standstill, thereby improved the gas-liquid contact mass transfer.In addition, the side-blown structure of inclined hole can suppress the column plate entrainment effectively, improves the tower plate operation upper load limit.When valve block was closed, the resistance that air communication is crossed the valve block inclined hole was lower than air communication and crosses the resistance in the space between valve block and the column plate (being caused by quiet liquid level and surface tension), and air-flow preferentially sprays from inclined hole, bubbling is steady, valve block does not shake, and the leakage in the time of can reducing underload improves operating flexibility of tray.And the air-flow of the air-flow of inclined hole ejection and the ejection of valve both sides intersects, and collides stream group and helps flowing the Surface Renewal and the turbulence of group, thereby help mass transfer.Institute can line up along row towards the suitable liquid flow path direction of rectangle valve opening on the column plate in addition, also can line up stagger arrangement.Can reduce " riverbed " resistance that liquid flows along row, help reducing gradient of liquid level when high liquid phase is loaded, thereby also help the even distribution of air-flow at bubbling area; Stagger arrangement then helps the turbulence of liquid stream and the stagnant wake occurs between two valves before and after mixing perpendicular to the friendship on the liquid flow path direction, avoiding.The utility model valve block standard-sized sheet aperture h 〉=h
eThe float valve of this big aperture can improve operating flexibility, reduces the column plate resistance.
Description of drawings
Fig. 1 is the utility model shaft side figure;
Fig. 2 is the utility model closed condition figure in valve plate;
Fig. 3 is the utility model full-gear figure in valve plate.
Among the figure:
The 1-valve block 2-inclined hole that blows side
3-support arm 4-valve leg
5-valve pin 7-valve lip
9-guide hole 10-column plate
Aperture h during h-float valve standard-sized sheet
1-inclined hole height
L-liquid flow path direction
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, this valve is rectangular stool shape, it has the valve block 1 of a strip and by the downward valve leg 4 that bends this valve block of support that forms in these valve block two ends, the surface of this valve block has 2 side-blown inclined holes 2 of opening dorsad, and dehiscing of this inclined hole highly is 4～8mm.Valve block and column plate form line and contact and cause bonding when float valve cuts out, the width of valve leg is set to the width less than valve block, thereby form a step that dwindles and constitute support arm 3 in valve block 1 to the transitional region between the valve leg 4, by the minimum aperture of these four support arms, 3 restriction float valves that are positioned at four jiaos of valve block sections.5 one on valve pin dashes with valve, and another is packed into and bent with specific purpose tool behind the valve opening, guarantees that valve moves up and down but unlikely stripping smoothly, and the maximum opening of limiting valve.Also have a guide hole that vertically runs through 9 along the liquid flow path direction on the surface of wherein preceding valve leg 4, the air-flow that blows out from this guide hole after valve block is opened promotes liquid stream and advances, and eliminates the dead band, reduces gradient of liquid level; Load hour, valve body sinks, guide hole is closed, and blows the negative effect of thin liquid layer in the time of can not producing underload.The edge on long limit, the both sides of this external valve plate 1 punching press downwards respectively forms recessed valve lip 7, and to promote the air-flow turbulence, wake flow forms whirlpool, helps mass transfer.
The inclined hole rectangular valve that the utility model is sayed has been done the observation of hydraulic performance and oxygen desorption efficiency and has been measured in heavy-oxygen-enriched water-air system.And under same system, same device, identical percent opening, identical height of weir, same plate spacing and same operation condition, compare with the F1 float valve.The long limit trend of the rectangular valve of being tested is consistent with the liquid flow path direction, and long limit is 3 with the ratio of minor face; Inclined hole height h
1=4.5mm, maximum opening h (being the distance between the bottom surface of column plate 10 and valve lip 7) reaches 1.43h
eSmooth operation, dry-plate pressure drop curve shape and F1 float valve are similar.The pressure drop in the stage of floating is close to level gently along with hole speed rises to change, and index only is 1/3 of a F1 float valve.Because of aperture is big, the stage of floating is elongated, and the hole kinetic energy factor of standard-sized sheet point improves about 1/4 than F1 float valve.Resistance coefficient is about 3 behind the standard-sized sheet, descends nearly half than 5.34 of F1 float valve.Low pressure drop and high load capacity were laid a good foundation when this just was the utility model float valve high resiliency, high load capacity.Inclined hole rectangular valve oxygen desorption efficiency is higher by about 10% than F1 float valve.
As shown in Figures 2 and 3, during the wet plate operation, under little tolerance, valve block does not float, and gas phase is only by the inclined hole bubbling on the valve block, and the bubbling area bubble is evenly intensive, has guaranteed the abundant contact mass transfer of gas-liquid.Along with tolerance increases, valve block floats gradually, because of the fluctuation of liquid stream is impacted, the valve block up-down vibration, drop is intermittently from the downward water clock of valve opening, but leakage rate little (less than 10%), and leakage is even, even in big liquid measure (as 68m
3/ (m.h)) down operation, can make still that froth bed is evenly distributed on the plate, thereby realize uniform gas-liquid contact.Avoided the drawback of the float valve of not perforate on the valve block: air-flow is concentrated and to be washed local valve block group open, produces local bumping; The valve opening of supernatant layer higher position can't be supported liquid layer gravity because of air-flow and become the leakage passage.Along with tolerance further increases, valve block reaches maximum opening h, the violent mutually turbulence of gas-liquid, and foam is evenly distributed on the plate, helps improving mass-transfer efficiency.
Test shows, the utility model float valve have high resiliency, high efficiency, high load capacity and low pressure degradation feature, and structure is firm, do not have wearing and tearing, and be not stuck, do not come off, easy for installation, and maintenance easily.Operating flexibility can reach 3～4; Load-bearing capacity is higher more than 10% (particularly the liquid phase load-bearing capacity is higher) than F1 float valve; The oxygen desorption efficiency is higher by 7～10% than F1 float valve under the same test condition.Can adapt to big industrial needs such as distillation, absorption, desorb, direct heat transfer, wet dedusting fully.Being particularly useful for treating capacity changes greatly and the mass transport process also higher to the pressure drop requirement.
Claims (7)
1. inclined hole rectangular valve that is used for float valve tray, this valve is rectangular stool shape, the valve leg (4) that it has the valve block (1) of a strip and supports this valve block, the surface that it is characterized in that this valve block has opposing in twos side-blown inclined hole (2), and its valve block (1) to the transitional region between the valve leg (4) is formed with a step that dwindles and constitutes support arm (3).
2. inclined hole rectangular valve according to claim 1 is characterized in that wherein one the surface of described valve leg (4) has a guide hole that vertically runs through (9).
3. inclined hole rectangular valve according to claim 1 and 2 is characterized in that valve pin (5) is outwards formed respectively on the bottom of described two valve legs (4).
4. inclined hole rectangular valve according to claim 1 is characterized in that the edge on the long limit, both sides of described valve block (1) forms a recessed valve lip (7) respectively.
5. according to claim 1 or 4 described inclined hole rectangular valves, the long limit that it is characterized in that described valve block is 1.5 to 4 with the ratio of minor face.
6. inclined hole rectangular valve according to claim 1, it is characterized in that on the valve block the even number of hole count for staggering mutually of the inclined hole of opening (2).
7. inclined hole rectangular valve according to claim 1, it is characterized in that the inclined hole of opening on the valve block to dehisce highly be 4～8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02265549 CN2559395Y (en) | 2002-07-16 | 2002-07-16 | Inclined hole bar-shape infloating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02265549 CN2559395Y (en) | 2002-07-16 | 2002-07-16 | Inclined hole bar-shape infloating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2559395Y true CN2559395Y (en) | 2003-07-09 |
Family
ID=33731551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02265549 Expired - Lifetime CN2559395Y (en) | 2002-07-16 | 2002-07-16 | Inclined hole bar-shape infloating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2559395Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909157A (en) * | 2014-04-23 | 2014-07-09 | 无锡市华诚石化设备有限责任公司 | Continuous stamping die and stamping process of rectangular float valve |
| CN104941232A (en) * | 2015-06-29 | 2015-09-30 | 苏州市科迪石化工程有限公司 | Tongue type floating valve tower disc |
-
2002
- 2002-07-16 CN CN 02265549 patent/CN2559395Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909157A (en) * | 2014-04-23 | 2014-07-09 | 无锡市华诚石化设备有限责任公司 | Continuous stamping die and stamping process of rectangular float valve |
| CN104941232A (en) * | 2015-06-29 | 2015-09-30 | 苏州市科迪石化工程有限公司 | Tongue type floating valve tower disc |
| CN104941232B (en) * | 2015-06-29 | 2017-01-18 | 苏州市科迪石化工程有限公司 | Tongue type floating valve tower disc |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Designer after: Lai Wenheng Designer after: He Jianpei Designer after: Cheng Zaoliang Designer after: Liu Hongjun Designer after: Du Xudong Designer before: Lai Wenheng Designer before: Liu Hongjun Designer before: Huang Shaolin Designer before: He Jianpei Designer before: Cheng Zaoliang |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: DESIGNER; FROM: LAI WENHENG LIU HONGJUN HUANG SHAOLIN HE JIANPEI CHEN ZHAOLIANG TO: LAI WENHENG HE JIANPEI CHEN ZHAOLIANG LIU HONGJUN DU XUDONG |
|
| C56 | Change in the name or address of the patentee |
Owner name: WISON ENGINEERING (CHINA) CO., LTD. Free format text: FORMER NAME: SHANGHAI HUISHENG CHEMICAL ENGINEERING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Shanghai City, Pudong Gold Bridge Road No. 58 Yinqiao building six floor, zip code: 201206 Patentee after: Wison Engineering Ltd. Address before: Shanghai City, Pudong Gold Bridge Road No. 58 Yinqiao building six floor, zip code: 201206 Patentee before: Huisheng Chemical Engineering Co., Ltd., Shanghai |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120716 Granted publication date: 20030709 |