CN202209466U - Guide plate additionally mounted wing valve - Google Patents
Guide plate additionally mounted wing valve Download PDFInfo
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- CN202209466U CN202209466U CN 201120333856 CN201120333856U CN202209466U CN 202209466 U CN202209466 U CN 202209466U CN 201120333856 CN201120333856 CN 201120333856 CN 201120333856 U CN201120333856 U CN 201120333856U CN 202209466 U CN202209466 U CN 202209466U
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- valve
- guide plate
- plate
- flutter
- wing valve
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Abstract
The utility model relates to a guide plate additionally mounted wing valve at a cyclone separator dipleg outlet of an oil refining catalytic cracking unit. The guide plate additionally mounted wing valve adopts a structure to effectively reduce the erosive abrasion of catalyst granules that are carried by air flow to reversely go into the cyclone separator dipleg on the valve plate, prevent the wing valve from being seriously damaged under the continuous erosion of the catalyst granules, and ensure the normal operation of the cyclone separator. The guide plate additionally mounted wing valve consists of a valve plate (1), a hanging ring (2), a bolt (3), a connecting plate (4), a fixed plate (5), a rib plate (6), a valve body (7) and a guide plate (8). After the guide plate additionally mounted wing valve is adopted, the air flow field around the wing valve is changed, the air flow flows away from the valve plate (1) and goes into the wing valve, so as to avoid the angle of attack on the valve plate (1) caused by the movement of the catalyst granules, and then prolong the service lives of the wing valve and the cyclone separator, reduce the run loss of catalyst and ensure the long-term safe operation of the device.
Description
Technical field
The utility model relates to the flutter valve of the additional guide plate of FCC unit cyclone dipleg outlet; Its structure can alleviate effectively because of air-flow carries the catalyst granules anti-channeling and gets into the erosive wear of cyclone dip-leg to valve plate; Avoid flutter valve badly damaged, guarantee the normal running of cyclone separator because of the catalyst granules continuous erosion causes.
Background technique
Cyclone separator is one of visual plant in the catalytic cracking unit; The dipleg bottom of most of cyclone separator is provided with flutter valve; As shown in Figure 1, mainly comprise: valve plate (1), suspension ring (2), bolt (3), connecting plate (4), fixed plate (5), gusset (6), valve body (7).The effect of flutter valve is the Negative Pressure Difference through the concentration of catalyst granules in the dipleg and reserve balance dipleg, should have unidirectional discharge and the function of avoiding the gas anti-channeling to get into dipleg simultaneously, to guarantee the normal running of cyclone separator.The quality of flutter valve performance is put and is connect the operation conditions that has influence on cyclone separator.
In catalytic cracking unit; When not forming the accumulation stock column of catalyzer in the dipleg; Because valve plate (1) is in the discharge open configuration, the gas in the flutter valve outside will get into dipleg from open slit, and is as shown in Figure 2; The catalyst granules of gas-entrained is put and is connect erosion valve plate (1), and the catalyst granules continuous erosion causes flutter valve to receive serious erosive wear.It is regional with the oval ring that valve plate (1) contacts with valve body that the position of flutter valve wearing and tearing mainly concentrates on the sealing valve port face.The form of erosive wear has 2 kinds: a kind of to be valve plate (1) washed away groove, and its degree of depth can reach more than the 5mm, sees Fig. 3 (a), and it is serious that another kind is that valve plate (1) local area is washed away attenuate, and the serious position valve plate (1) of erosion is ground with the hole, sees Fig. 3 (b).This moment, valve plate (1) both sides can not form Negative Pressure Difference; Valve plate can not free opening and closing, and generation is leaked out, and it is up that the gas anti-channeling in the flutter valve outside gets into dipleg; Destroy the blanking of cyclone dip-leg; Catalyst stack less is serious, influences the efficient of cyclone system, and then influences the safe operation and the Processing capacity of whole catalytic cracking unit.
Flow field around the flutter valve analyzed show: the wearing and tearing of valve plate (1) sealing faying surface are carried catalyst granules by air-flow and are caused, and belong to the Dual-Phrase Distribution of Gas olid erosive wear.In dipleg discharge process; After the catalyst granules that valve plate (1) is piled up in the dipleg was pushed open, when the discharge process was in the semicanal fluidised form, valve body (7) lower half portion was a grain flow; The outside high pressure air of flutter valve is known from experience the entering dipleg from valve body (7) space, top, forms the anti-channeling air-flow.The catalyst granules that this anti-channeling air-flow is carried suspension secretly gets into flutter valve, because it is up to swerve behind the gas entering flutter valve, and particle breaks away from streamline under the effect of inertial force, and the part particle can clash into valve plate (1) surface, causes erosive wear.It is also different that valve plate (1) diverse location receives the degree of erosive wear.Because maximum value appears in particle motion and plastic metal material surface erosion rate when 20 ° of-30 ° of angles of attack, the angle of attack is different, and the erosion rate will be different, the groove depth that erosive wear forms also not just as.As shown in Figure 4, the black shade zone is abrading section under the different open configurations of valve plate (1), and openings of sizes is different, and the position of wearing and tearing and degree are also different.
Chinese patent ZL 200520112642.7, a kind of board-like flutter valve on the faying surface that valve plate (1) and dipleg export, is inlayed wearing layer, and wearing layer is cemented carbide or wear-resisting powder bed, solves wear problem.The structure of overall flutter valve is not done any variation.This method can only be slowed down the erosive wear of the anti-channeling air-flow of entrained catalyst particles to valve plate (1), and processing technology is complicated, still can not solve valve plate (1) wear problems from mechanism.
Field Research to catalytic cracking unit shows: the valve plate of flutter valve (1) wear problem is commonplace, for the catalytic cracking unit operation, is a kind of potential harm.The wearing and tearing of flutter valve often cause cyclone separator operation exception or inefficacy, cause whole device difficult long period safe and stable operation.The wear problem that solves flutter valve is the key factor of assurance device long period safe operation.
Summary of the invention
In order to solve the problem that exists in the above-mentioned flutter valve discharge process, the utility model provides a kind of effectively alleviating because of air-flow carries catalyst granules anti-channeling entering cyclone dip-leg to cause the valve plate (1) of flutter valve to receive the erosive wear of catalyst granules, the device of assurance cyclone separator normal running.
For realizing above-mentioned purpose, the technological scheme that the utility model adopts is: additional guide plate in valve body (7) outlet port of at present common flutter valve.After adopting the flutter valve of the additional guide plate of the utility model; Air velocity distribution around the flutter valve changes; Air-flow deviates from valve plate (1) and gets into flutter valve; Avoided the catalyst granules motion to form 20 ° of-30 ° of angles of attack, thereby can prolong the working life of flutter valve and cyclone separator, race damage, the safe operation of assurance device long period of minimizing catalyzer valve plate (1).
As shown in Figure 5, the flutter valve of a kind of additional guide plate of the utility model is made up of valve plate (1), suspension ring (2), bolt (3), connecting plate (4), fixed plate (5), gusset (6), valve body (7) and guide plate (8).
The flutter valve of a kind of additional guide plate of the utility model is characterized in that: export along a guide plate of its circumferential arrangement (8) at flutter valve valve body (7).
The flutter valve of a kind of additional guide plate of the utility model is characterized in that: when valve plate (1) was closed, it was 10-60mm that the edge of valve plate (1) exceeds valve body (7) outlet edge.
The flutter valve of a kind of additional guide plate of the utility model is characterized in that: guide plate (8) is 0-8mm apart from valve body (7) outlet.
The flutter valve of a kind of additional guide plate of the utility model is characterized in that: guide plate (8) has two types.A kind of is to wait the hem width guide plate, and width L is 20mm-80mm.A kind of is that the broadside of the wide guide plate of inequilateral is at horizontal center line place, valve body (7) outlet; Width L is 20mm-80mm; The narrowest limit is vertical centerline in valve body (7) outlet, and width M is
The flutter valve of a kind of additional guide plate of the utility model is characterized in that: guide plate (8) and vertical direction angle are 3 ° of-8 ° of valve plates (1) when being in closed state, and guide plate (8) is parallel to valve plate (1).
Below in conjunction with accompanying drawing and embodiment the utility model is explained in further detail.
Description of drawings
Fig. 1 is the flutter valve structural representation
Fig. 2 is the half-open position schematic representation of flutter valve
Fig. 3 is a flutter valve erosive wear photo
Fig. 4 is the valve plate erosive wear schematic representation of flutter valve
Fig. 5 is the flutter valve structural representation of the additional guide plate of the utility model
Fig. 6 is the flutter valve A-A sectional drawing of the additional guide plate of the utility model
Fig. 7 is the hem width guide plate schematic representation such as flutter valve of the additional guide plate of the utility model
Fig. 8 is the wide guide plate schematic representation of flutter valve inequilateral of the additional guide plate of the utility model
Fig. 9 is the flutter valve guide plate shaft side figure of the additional guide plate of the utility model
Flow field velocity cloud atlas around the flutter valve of the additional guide plate of Figure 10 the utility model
Wherein: the 1-valve plate; The 2-suspension ring; The 3-bolt; The 4-connecting plate; The 5-fixed plate; 6 gussets-; The 7-valve body; The 8-guide plate.
Embodiment
As shown in Figure 5, the flutter valve of the additional guide plate of the utility model is made up of valve plate (1), suspension ring (2), bolt (3), connecting plate (4), fixed plate (5), gusset (6), valve body (7) and guide plate (8).As shown in Figure 6, when valve plate (1) was closed, valve plate (1) closely cooperated with valve body (7) outlet, and guide plate (8) is 0-8mm apart from valve body (7) outlet.Valve plate (1) circular arc portion edge exceeds valve body (7) outlet edge and is about 10-60mm.Like Fig. 7,8, shown in 9, guide plate (8) is arranged a circle along valve body (7) outlet, and guide plate (8) has two types.A kind of is to wait the hem width guide plate, and width L is 20mm-80mm.A kind of is that the broadside of the wide guide plate of inequilateral is at horizontal center line place, valve body (7) outlet; Width L is 20mm-80mm; The narrowest limit is vertical centerline in valve body (7) outlet; Width M is 3 ° of-8 ° of valve plates (1) when being in closed state for
guide plate (8) and vertical direction angle, and guide plate (8) is parallel to valve plate (1).
Flow field simulation: adopt FLUENT fluid software for calculation that the field of the gas phase
around the flutter valve of additional guide plate is calculated, the computational physics model is as shown in Figure 6.Result of calculation is shown in figure 10; Figure 10 (a) and Figure 10 (b) are the anti-channeling air velocity distribution that does not add flutter valve valve plate (1) the different opening position of guide plate (8), and Figure 10 (c) and Figure 10 (d) are the anti-channeling air velocity distribution of flutter valve valve plate (1) the different opening position of additional guide plate (8).Behind the additional guide plate (8), the equal gas phase flow field in valve plate (1) diverse location place changes, and vapor phase stream deviates from valve plate (1) and gets into flutter valve, can not form erosion to valve plate (1).
Claims (5)
1. the flutter valve of a kind of additional guide plate of the utility model is made up of valve plate (1), suspension ring (2), bolt (3), connecting plate (4), fixed plate (5), gusset (6), valve body (7) and guide plate (8), it is characterized in that: export along a guide plate of its circumferential arrangement (8) at common flutter valve valve body (7).
2. the flutter valve of a kind of additional guide plate according to claim 1 is characterized in that: when valve plate (1) was closed, it was 10-60mm that the edge of valve plate (1) exceeds valve body (7) outlet edge.
3. the flutter valve of a kind of additional guide plate according to claim 1 is characterized in that: guide plate (8) is 0-8mm apart from valve body (7) outlet.
4. the flutter valve of a kind of additional guide plate according to claim 1; It is characterized in that: guide plate (8) has two types; A kind of is to wait the hem width guide plate; Width L is 20mm-80mm, a kind of be the broadside of the wide guide plate of inequilateral at horizontal center line place, valve body (7) outlet, width L is 20mm-80mm; The narrowest limit is vertical centerline in valve body (7) outlet, and width M is
5. the flutter valve of a kind of additional guide plate according to claim 1 is characterized in that: guide plate (8) is 3 °-8 ° with the vertical direction angle, and valve plate (1) is when being in closed state, and guide plate (8) is parallel to valve plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120333856 CN202209466U (en) | 2011-09-07 | 2011-09-07 | Guide plate additionally mounted wing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120333856 CN202209466U (en) | 2011-09-07 | 2011-09-07 | Guide plate additionally mounted wing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202209466U true CN202209466U (en) | 2012-05-02 |
Family
ID=45989013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120333856 Expired - Fee Related CN202209466U (en) | 2011-09-07 | 2011-09-07 | Guide plate additionally mounted wing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202209466U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763814A (en) * | 2015-03-31 | 2015-07-08 | 洛阳兴罡石化设备有限公司 | Wear-resisting method for preventing sealing surface between folded wing panel and adaptor tube from being worn and wearable wing valve |
-
2011
- 2011-09-07 CN CN 201120333856 patent/CN202209466U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763814A (en) * | 2015-03-31 | 2015-07-08 | 洛阳兴罡石化设备有限公司 | Wear-resisting method for preventing sealing surface between folded wing panel and adaptor tube from being worn and wearable wing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120502 Termination date: 20150907 |
|
| EXPY | Termination of patent right or utility model |