CN211344051U - Anti-coking adjusting butterfly valve - Google Patents
Anti-coking adjusting butterfly valve Download PDFInfo
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- CN211344051U CN211344051U CN201921719659.7U CN201921719659U CN211344051U CN 211344051 U CN211344051 U CN 211344051U CN 201921719659 U CN201921719659 U CN 201921719659U CN 211344051 U CN211344051 U CN 211344051U
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- coking
- valve body
- butterfly valve
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Abstract
The utility model discloses a butterfly valve is adjusted in anti-coking comprises valve body portion (1-0) and actuating mechanism (2-0), and valve body portion (1-0) is including valve body (1), nut (2), valve plate (3), disk seat (4), steam sweep mouth (5), valve rod (6) and taper pin (7), leaves the clearance between valve plate (3) and disk seat (4), is equipped with steam on the valve body and sweeps mouth (5), sets up in the department of meeting of valve plate (3) and disk seat (4). Use anti-coking adjust butterfly valve, can satisfy the pressure and the flow control requirement of coke drum reactor among the novel delayed coking device, solve the problem of the easy coking of high temperature oil gas in the valve body structure.
Description
Technical Field
The utility model relates to an anti-coking adjusting butterfly valve used by a delayed coking device of an oil refinery.
Background
In heavy oil processing equipment of oil refineries, such as catalytic crackers and delayed coking units, high-temperature oil and gas pipelines are usually arranged in a reaction system and a fractionation system, and the high-temperature oil and gas often contains coke powder or heavy oil components easy to coke. When the flow or pressure control is required, a regulating valve needs to be arranged, and the regulating valve is easy to coke and block, so that the normal operation of the process device is influenced. Taking a delayed coking unit as an example, generally, an oil gas ring valve is arranged between a coke drum reactor and a fractionating tower in the delayed coking unit. The control requirement of the oil-gas loop valve is not high, and the oil-gas loop valve is only used for circulation of a warm tower when two adjacent coke tower reactors are switched, so that accurate pressure or flow control is not needed. In a new delayed coking unit, the pressure and flow rate of the coke drum reactor need to be controlled more precisely. At this time, the general high-temperature oil-gas ring valve cannot meet the control requirement of accurate pressure or flow.
Generally, a butterfly valve is used as a regulating valve, and is widely applied in the field of flow industrial regulating valves by virtue of the characteristics of simple structure, small size, light weight, simplicity and rapidness in operation, high flow capacity and the like. The butterfly valve depends on the opening of the adjusting valve plate to control the gap between the valve plate and the valve body to throttle so as to realize the function of adjusting the flow or the pressure. Generally, the universal butterfly valve tuning performance has a good approximate equal percentage tuning characteristic. The butterfly valve is selected on the high-temperature oil-gas pipeline, so that the requirement of more accurately controlling the pressure or flow of the coke drum reactor can be met. Meanwhile, considering that the high-temperature oil gas contains coke powder or other heavy oil components easy to coke, a coking prevention measure needs to be arranged for adjusting a butterfly valve. Therefore, a new anti-coking regulating butterfly valve needs to be developed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a butterfly valve is adjusted in coking prevention to when satisfying the pressure and the flow control requirement of coke drum reactor among the novel delayed coking device, solve the problem of the easy coking of high temperature oil gas in the valve body structure.
In order to solve the above problem, the utility model adopts the following technical scheme:
the utility model provides a butterfly valve is adjusted in coking prevention, its characterized in that: the anti-coking adjusting butterfly valve comprises a valve body part and an executing mechanism, wherein the executing mechanism is connected with the valve body part through a connecting plate, the valve body part comprises a valve body, a nut, a valve plate, a valve seat, a steam purging port, a valve rod and a conical pin, a gap is reserved between the valve plate and the valve seat, the valve body is provided with the steam purging port, and the steam purging port is arranged at the joint of the valve plate and the valve seat.
The utility model discloses further technical characterized in that: the valve plate is provided with a valve seat, the valve seat is.
The utility model discloses further technical characterized in that: the valve body adopts a center line butterfly valve structure, namely the valve rod (6) is arranged at the center line position of the valve plate (3). The valve body can also adopt a single eccentric structure, a double eccentric structure or a triple eccentric structure.
The utility model discloses further technical characterized in that: the valve body is provided with two hand holes, namely an upper hand hole and a lower hand hole which are positioned above and below the central line of the valve body flow passage shaft. Preferably, the upper hand hole and the lower hand hole are respectively positioned on two sides of the closing position of the valve plate of the butterfly valve.
The utility model discloses further technical characterized in that: the actuating mechanism is a pneumatic, electric or electro-hydraulic actuating mechanism.
The utility model discloses butterfly valve is adjusted in easy coking on the mainly used oil refinery high temperature oil gas pipeline, include: the heavy oil processing device such as delayed coking, catalytic cracking, residual oil hydrogenation, etc. contains the oil gas pipeline regulating valve of the medium easy to coke. Such as: a pressure or flow control valve on a coke drum reactor overhead hydrocarbon line in a novel delayed coking unit.
Compared with the prior art, the utility model, following beneficial effect has: the utility model provides a when anti-coking adjusts butterfly valve and installs on coke drum reactor top oil gas pipeline, twice oil gas block valve is still installed usually to this valve low reaches, the high temperature oil gas that produces in by coke drum reactor is through anti-coking adjusting butterfly valve, twice oil gas block valve gets into the fractionating system, be equipped with steam on the valve body and sweep the mouth, accessible steam sweeps the mouth and lets in steam and sweep, will probably pile up the coke or other solid coking greasy dirt medium cleaing away at the adjacent position coking of valve plate and disk seat. When the butterfly valve plate is opened, the steam purging port is closed, and the steam consumption can be reduced. In addition, two hand holes are arranged on the valve body, and when the coke drum reactor is switched to a hydraulic decoking operation stage, normally, two oil and gas isolating valves at the downstream of the valve are closed. The coke drum reactor is isolated from the plant fractionation system. Then, when the coke drum reactor enters a hydraulic decoking stage, the interior of the coke drum reactor is communicated with the atmosphere, and at the moment, the coking condition in the valve body can be checked by opening the two hand holes on the valve body. If coke cleaning is needed, the two hand holes can be opened and the coke cleaning operation is related, so that when the operation performance is affected due to the coke in the valve body of the butterfly valve, the whole butterfly valve does not need to be detached for maintenance.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The drawings and detailed description do not limit the scope of the invention as claimed.
Drawings
Figure 1 is the utility model discloses an anti-coking adjusts butterfly valve overall view schematic diagram on oil gas pipeline.
Fig. 2 is a right side view of the present invention from fig. 1.
Fig. 3 is a partial schematic view of the utility model shown in fig. 2 from the direction B.
Fig. 4 is a cross-sectional view of the valve body portion of fig. 1, where a-a is a cross-sectional designation.
Figure 5 is a simplified diagram of the coke drum reactor top anti-coking regulating butterfly valve of the present invention.
The reference symbols shown in the figures are:
1-valve body, 1-1-upper hand hole, 1-2-lower hand hole, 2-nut, 3-valve plate, 4-valve seat, 5-steam blowing port, 6-valve rod, 7-taper pin, 1-0-valve body part, 2-0-actuating mechanism, 3-1-wear-resistant material I, 4-1-wear-resistant material II, 31-coke tower reactor, 32-oil gas pipeline, 33-pressure control valve, 34-one oil gas isolating valve, 35-two oil gas isolating valves and 36-oil gas ring valve.
Detailed Description
Referring to fig. 1 and 2, the utility model discloses an anti-coking adjusting butterfly valve, this anti-coking adjusting butterfly valve comprises valve body portion 1-0 and actuating mechanism 2-0. The valve body part 1-0 comprises a valve body 1, a nut 2, a valve plate 3, a valve seat 4, a steam purging port 5, a valve rod 6 and a taper pin 7. The valve body 1 is provided with two hand holes, namely an upper hand hole 1-1 and a lower hand hole 1-2 which are respectively positioned above and below the central line of a flow channel shaft of the valve body 1. The upper hand hole 1-1 and the lower hand hole 1-2 are respectively positioned at two sides of the closing position of the butterfly valve plate 3. The position and the number of the hand holes arranged on the valve body 1 can be properly adjusted according to the requirement so as to meet the requirements of overhaul and maintenance.
The anti-coking adjusting butterfly valve is driven by an actuating mechanism 2-0, the opening of the valve plate 3 is adjusted by the actuating mechanism 2-0 to realize the adjustment of the valve, and the actuating mechanism 2-0 can be a pneumatic, electric or electro-hydraulic actuating mechanism. The butterfly valve adopts a non-sealing structure, and a gap is reserved between the valve plate 3 and the valve seat 4, so that no sealing is realized. The valve body is provided with a steam blowing opening 5 which is arranged at the joint of the valve plate 3 and the valve seat 4. The surface and the end part of the valve plate 3 close to the valve seat 4 are provided with wear-resistant materials I3-1, and the outer surface and the end part of the valve seat 4 close to the valve plate 3 are provided with wear-resistant materials II 4-1. When the valve is in a closed position, steam can be introduced through the steam purging port 5 for purging, and coke or other solid coking oil fouling media which can be accumulated at the adjacent part of the valve plate 3 and the valve seat 4 for coking are removed. When the valve is opened, the steam purge port 5 is closed to save steam consumption.
Referring to fig. 3, in a coke drum reactor to plant fractionation system related simplified oil and gas flow path, it consists of a coke drum reactor 31, oil and gas lines 32, a pressure control valve 33, an oil and gas block valve 34, two oil and gas block valves 35 and an oil and gas ring valve 36. Under normal operating conditions, as oil enters the coke drum reactor 31 for the coking stage, oil and gas from the feed is sent to the unit fractionation system through oil and gas line 32. At this time, a coking-preventing control butterfly valve for petrochemical industry according to the present invention is used as the pressure control valve 33 to control the pressure of the coke drum reactor 31. The oil and gas isolating valve 34, the oil and gas isolating valve 35 and the oil and gas ring valve 36 are fully opened. When the coke drum reactor 31 enters the decoking operation stage, the oil gas isolating valve 34, the oil gas isolating valve 35 and the oil gas ring valve 36 are all closed, and the coke drum reactor 31 is cut off from being communicated with the device fractionation system. The coke drum reactor 31 is then vented to atmosphere as the coke drum reactor 31 enters the hydraulic decoking stage. The coking condition in the valve body can be checked by opening the upper hand hole 1-1 and the lower hand hole 1-2 on the valve body 1. If coke cleaning is needed, the relevant coke cleaning operation can also be carried out by opening the two hand holes, namely the upper hand hole 1-1 and the lower hand hole 1-2. For example, the coke is cleaned by mechanical coke cleaning, chemical coke cleaning, steam purging and the like by introducing relevant machine tools and equipment through two hand holes on the valve body 1. Thus, when the operation performance is affected due to coking in the valve body of the butterfly valve, the whole butterfly valve does not need to be detached for maintenance.
Claims (6)
1. The utility model provides a butterfly valve is adjusted in anti-coking which characterized in that: the anti-coking adjusting butterfly valve is composed of a valve body portion (1-0) and an executing mechanism (2-0), wherein the valve body portion (1-0) comprises a valve body (1), a nut (2), a valve plate (3), a valve seat (4), a steam purging port (5), a valve rod (6) and a conical pin (7), the valve plate (3) is driven by the valve rod (6) through the conical pin (7), the conical pin (7) penetrates through the valve rod (6) and is fixedly arranged on the valve plate (3) through the nut (2), the valve rod (6) extends out of the valve body (1) and is connected with the executing mechanism (2-0), a gap is reserved between the valve plate (3) and the valve seat (4), and the steam purging port (5) is arranged on the valve body and is arranged at the joint of the valve plate (3) and the valve seat (.
2. The anti-coking adjusting butterfly valve of claim 1, wherein: the valve plate wear-resistant material (3-1) is arranged on the surface and the end part, close to the valve seat (4), of the valve plate (3), and the valve seat wear-resistant material (4-1) is arranged on the outer surface and the end part, close to the valve plate (3), of the valve seat (4).
3. The anti-coking adjusting butterfly valve of claim 1, wherein: the actuating mechanism (2-0) is a pneumatic, electric or electro-hydraulic actuating mechanism.
4. The anti-coking adjusting butterfly valve of claim 1, wherein: the valve body (1) adopts a center line butterfly valve structure, or adopts a single eccentric structure, a double eccentric structure or a triple eccentric structure.
5. The anti-coking adjusting butterfly valve of claim 1, wherein: the valve body (1) is provided with two hand holes, namely an upper hand hole (1-1) and a lower hand hole (1-2) which are positioned above and below the center line of a flow channel shaft of the valve body (1).
6. An anti-coking regulating butterfly valve according to claim 5, in which: the upper hand hole (1-1) and the lower hand hole (1-2) are respectively positioned on two sides of the closed position of the valve plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921719659.7U CN211344051U (en) | 2019-10-15 | 2019-10-15 | Anti-coking adjusting butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921719659.7U CN211344051U (en) | 2019-10-15 | 2019-10-15 | Anti-coking adjusting butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211344051U true CN211344051U (en) | 2020-08-25 |
Family
ID=72103109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921719659.7U Active CN211344051U (en) | 2019-10-15 | 2019-10-15 | Anti-coking adjusting butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211344051U (en) |
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2019
- 2019-10-15 CN CN201921719659.7U patent/CN211344051U/en active Active
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