阅读说明：本技术 一种用于油气装卸的集气管道联动单向截断装置及方法 (Gas collecting pipeline linkage one-way cutoff device and method for oil gas loading and unloading ) 是由 刘麟 李京 陈普宽 王为周 刘成文 陶卉 单继强 方亮 黄维秋 张伟 王志坚 于 2021-07-16 设计创作，主要内容包括：一种用于油气装卸的集气管道联动单向截断装置及方法,包括油气输送管道、输气管Ⅰ、输气管Ⅱ、过料型气缸、连接法兰、连杆机构Ⅰ、连杆机构Ⅱ、连杆机构Ⅲ、下密封件、活塞、上密封件、气相接口、收集装置、密封橡胶、存储罐组成。其中,油气输送管道与气相接口固定于连接法兰上端,上密封件与下密封件之间采用线性密封,上密封件与气相接口焊接固定,下密封件与连杆机构Ⅲ焊接固定,连杆机构Ⅰ、连杆机构Ⅱ与连杆机构Ⅲ铰链连接,另连杆机构Ⅲ与输油管道铰接连接,收集装置与气相接口柔性连接。该装置在联动机构与气相管道油气压力共同作用下闭合,防止油气经装卸臂集气管道倒流泄漏,同时减少作业程序,降低劳动强度。(A gas collecting pipeline linkage one-way cutoff device and method for oil and gas loading and unloading comprises an oil and gas conveying pipeline, a gas conveying pipeline I, a gas conveying pipeline II, a material passing type cylinder, a connecting flange, a connecting rod mechanism I, a connecting rod mechanism II, a connecting rod mechanism III, a lower sealing element, a piston, an upper sealing element, a gas phase interface, a collecting device, sealing rubber and a storage tank. The oil and gas conveying pipeline and the gas phase interface are fixed to the upper end of the connecting flange, linear sealing is adopted between the upper sealing piece and the lower sealing piece, the upper sealing piece is welded and fixed with the gas phase interface, the lower sealing piece is welded and fixed with the connecting rod mechanism III, the connecting rod mechanism I and the connecting rod mechanism II are hinged with the connecting rod mechanism III, the connecting rod mechanism III is hinged with the oil conveying pipeline, and the collecting device is flexibly connected with the gas phase interface. The device is closed under the combined action of the linkage mechanism and the oil gas pressure of the gas phase pipeline, so that the backflow leakage of oil gas through the gas collecting pipeline of the loading and unloading arm is prevented, meanwhile, the operation procedures are reduced, and the labor intensity is reduced.)

1. The utility model provides a one-way cut-off device of gas gathering pipeline linkage for oil gas loading and unloading, includes oil gas conveying pipeline (1), collection device (14) and storage jar (16), oil gas conveying pipeline (1) one end and the gas gathering pipeline connection of oil gas loading and unloading arm, the other end penetrates inside storage jar (16) for to carrying oil gas in the storage jar (16), collection device (14) and storage jar (16) top intercommunication for collecting the volatile oil gas in storage jar (16) upper portion, a serial communication port, the one-way cut-off device of gas gathering pipeline linkage for oil gas loading and unloading still includes gas-supply pipe I (2), gas-supply pipe II (3), punishment in advance type cylinder (4), flange (5), link mechanism I (6), link mechanism II (7), link mechanism III (8), lower sealing member (10), sealing plug (11), upper seal (12), gaseous phase interface (13), the material passing type cylinder (4) and the gas phase interface (13) are fixed at the upper end of a connecting flange (5), the lower end of the connecting flange (5) is connected with a storage tank (16), the connecting flange (5) comprises an oil-gas sensing device arranged at the bottom end and is used for judging the position of oil, one end of the gas phase interface (13) penetrates through the connecting flange (5) and extends into the top end inside the storage tank (16), the other end of the gas phase interface is connected with a collecting device (14), an upper sealing element (12) is arranged at one end of the gas phase interface (13) extending into the storage tank (16), the upper sealing element (12) is hollow inside and is connected with the edge of the gas phase interface (13);

the material passing type cylinder (4) comprises a cylinder body and a piston, a piston rod of the piston is the upper part of an oil-gas conveying pipeline (1), a slide way for the piston to slide is arranged in the cylinder body, an interlayer channel is arranged on the outer side of the slide way on one side and communicated with a sealed area formed by the bottom of the piston and the bottom of the cylinder body, a gas pipe II (3) is connected with the top of the interlayer channel, and a gas pipe I (2) is communicated with the sealed area formed by the top of the piston and the top of the cylinder body;

the lower part outside of oil gas pipeline (1) and the one end fixed connection of link mechanism I (6), the other end of link mechanism I (6) is articulated with the one end of link mechanism II (7) and is connected, the other end of link mechanism II (7) and the one end fixed connection of link mechanism III (8) hinge, the junction of link mechanism II (7) and link mechanism III (8) and the round pin body that is fixed in flange (5) through the support form the revolute pair, link mechanism III (8) and lower sealing member (10) welding sealing plug, sealing plug (11) are connected with lower sealing member (10), inside cavity of sealing member (11) and last sealing member (12) corresponds, lower sealing member (10) and last sealing member (12) one-to-one and linear sealing.

2. The gas collecting pipeline linkage one-way cutoff device for oil and gas loading and unloading according to claim 1, characterized in that the gas collecting pipeline linkage one-way cutoff device for oil and gas loading and unloading further comprises a compensator (9), wherein the compensator (9) is arranged between the link mechanism I (6) and the link mechanism II (7).

3. The gas collecting pipeline linkage one-way cutoff device for oil and gas loading and unloading as recited in claim 2, wherein the compensator (9) is a spring compensator, one end of the spring compensator is connected with the right end of the link mechanism II (7), and the other end of the spring compensator is connected with the upper end of the link mechanism I (6).

4. The gas collecting pipeline linkage one-way cutoff device for oil and gas loading and unloading as claimed in claim 1, wherein the gas collecting pipeline linkage one-way cutoff device for oil and gas loading and unloading further comprises sealing rubber (15), and the sealing rubber (15) is arranged at the joint of the connecting flange (5) and the storage tank (16).

5. The gas collecting pipeline linkage one-way cutoff device for oil and gas loading and unloading according to claim 1, characterized in that the upper sealing member (12), the lower sealing member (10) and the sealing plug (11) are rubber members.

6. The gas collecting pipeline linkage one-way cutoff device for oil and gas loading and unloading according to claim 1, wherein the height of the inner slide way of the material passing type cylinder (4) is 100-500 mm.

7. The method for the linked unidirectional truncation of the gas collecting pipeline for oil and gas loading and unloading based on the device of claim 1 is characterized by comprising the following steps: when oil gas loading operation is carried out, compressed air enters the air cylinder (4) from the air delivery pipe II (3), original compressed air in the air cylinder (4) is discharged from the air delivery pipe I (2), the oil gas delivery pipeline (1) is lifted by pressure generated by the compressed air, meanwhile, the connecting rod mechanism I (6) is driven to act, finally, the sealing plug (11) is separated from the gas phase interface (13), meanwhile, oil gas enters the storage tank (16) from the oil gas delivery pipeline (1), and meanwhile, volatile oil gas volatilizes to the collecting device (14) from the gas phase interface (13), so that oil gas collection and storage are realized; the oil gas sensing device is used for judging the position of oil liquid, and when the oil liquid is close to the gas phase interface (13), the loading operation is finished; when oil gas loading operation ended, compressed air got into cylinder (4) from gas-supply pipe I (2), original compressed air discharged from gas-supply pipe II (3) in cylinder (4), the pressure that compressed air produced makes oil gas pipeline (1) descend, drive link mechanism I (6) action simultaneously, the closing plate upwards rotates under the drive, finally make sealing plug (11) seal gas phase interface (13), go up sealing member (12) and closely laminate with lower sealing member (10), realize sealing by force.

Technical Field

The invention relates to special fluid loading and unloading equipment, in particular to a gas collecting pipeline linkage one-way cutoff device and method for oil and gas loading and unloading.

Background

The volatile leakage in the oil gas loading and unloading process is a technical bottleneck which is difficult to overcome at home and abroad, on one hand, the leakage loss causes the power shortage of part of industry departments, and the negative influence is brought to the national economic development. Meanwhile, the oil gas leakage causes environmental pollution and seriously harms the health of workers, and the oil product loading and transporting site is filled with oil gas media, so that safety accidents such as burning explosion, poisoning and the like are very easy to happen, and great loss is brought to national economy. Therefore, the research on the high-efficiency gas-collecting fluid loading and unloading arm with high sealing performance is urgent.

Particularly, the gas collecting pipelines (gas phase pipes) of all loading and unloading arms are connected to the oil gas recovery system, when part of the loading and unloading arms work, oil gas flows back from the gas collecting pipelines of the idle loading and unloading arms and is directly discharged to the atmosphere, waste and pollution are caused, and the site safety and the health safety of operators are endangered.

Disclosure of Invention

The technical problem to be solved is as follows: aiming at the technical problems, the invention provides a gas collecting pipeline linkage one-way cut-off device and a method for oil gas loading and unloading, which are assembled on a gas collecting pipeline (a gas phase pipe) of an oil gas loading and unloading arm to be linked with a pressing self-locking mechanism, can effectively prevent oil gas from flowing back and leaking through the gas collecting pipeline of the loading and unloading arm, reduce operation procedures and reduce labor intensity.

The technical scheme is as follows: a gas collecting pipeline linkage one-way cut-off device for oil gas loading and unloading comprises an oil gas conveying pipeline, a collecting device and a storage tank, wherein one end of the oil gas conveying pipeline is connected with the gas collecting pipeline of an oil gas loading and unloading arm, the other end of the oil gas conveying pipeline penetrates into the storage tank and is used for conveying oil gas into the storage tank, the collecting device is communicated with the top of the storage tank and is used for collecting the volatile oil gas at the upper part of the storage tank, the gas collecting pipeline linkage one-way cut-off device for oil gas loading and unloading further comprises a gas conveying pipe I, a gas conveying pipe II, a material passing type cylinder, a connecting flange, a connecting rod mechanism I, a connecting rod mechanism II, a connecting rod mechanism III, a lower sealing element, a sealing plug, an upper sealing element and a gas phase interface, the material passing type cylinder and the gas phase interface are fixed at the upper end of the connecting flange, the lower end of the connecting flange is connected with the storage tank, the connecting flange comprises an oil gas sensing device arranged at the bottom end and is used for judging the position of oil liquid, one end of the gas phase interface penetrates through the connecting flange and extends into the top end of the interior of the storage tank, the other end of the gas phase interface is connected with the collecting device, the upper sealing element is arranged at one end of the gas phase interface extending into the interior of the storage tank, the interior of the upper sealing element is hollow, and the edge of the upper sealing element is connected with the edge of the gas phase interface;

the material passing type cylinder comprises a cylinder body and a piston, a piston rod of the piston is the upper part of an oil gas conveying pipeline, a slide way for the piston to slide is arranged in the cylinder body, an interlayer channel is arranged on the outer side of the slide way on one side, the interlayer channel is communicated with a sealed area formed by the bottom of the piston and the bottom of the cylinder body, a gas pipe II is connected with the top of the interlayer channel, and a gas pipe I is communicated with the sealed area formed by the top of the piston and the top of the cylinder body;

the outer side of the lower portion of the oil and gas conveying pipeline is fixedly connected with one end of a connecting rod mechanism I, the other end of the connecting rod mechanism I is hinged to one end of a connecting rod mechanism II, the other end of the connecting rod mechanism II is fixedly connected with one end of a connecting rod mechanism III hinge, a connecting part of the connecting rod mechanism II and the connecting rod mechanism III and a pin body fixed on a connecting flange through a support form a revolute pair, the connecting rod mechanism III is welded with a lower sealing piece, a sealing plug is connected with the lower sealing piece, the sealing plug corresponds to the inner portion of the upper sealing piece in a hollow mode, and the lower sealing piece corresponds to the upper sealing piece in a one-to-one mode and is sealed linearly.

Preferably, the gas collecting pipeline linkage one-way cutoff device for oil and gas loading and unloading further comprises a compensator, and the compensator is arranged between the connecting rod mechanism I and the connecting rod mechanism II.

Preferably, the compensator is a spring compensator, one end of the spring compensator is connected with the right end of the link mechanism II, the other end of the spring compensator is connected with the upper end of the link mechanism I, the connecting rod can be effectively prevented from being damaged due to unfixed cylinder stroke caused by nonuniform sizes of the openings of the storage tanks, and the blocking mechanism (the upper sealing piece, the sealing plug and the lower sealing piece) is enabled to be linked with the locking mechanism (the link mechanism).

Preferably, the gas collecting pipeline linkage one-way cutoff device for oil and gas loading and unloading further comprises sealing rubber, and the sealing rubber is arranged at the joint of the connecting flange and the storage tank. The sealing performance of the shut-off mechanism can be further improved.

Preferably, the upper seal, the lower seal and the sealing plug are rubber members.

Preferably, the height of the material passing type cylinder inner slide way is 100-500 mm.

The method for linking and unidirectionally cutting the gas collecting pipeline for oil and gas loading and unloading based on the device comprises the following steps: when oil gas loading operation is carried out, compressed air enters the air cylinder from the gas pipe II, original compressed air in the air cylinder is discharged from the gas pipe I, the pressure generated by the compressed air enables the oil gas conveying pipeline to ascend and simultaneously drives the connecting rod mechanism I to act, finally the sealing plug is separated from the gas phase interface, meanwhile, oil gas enters the storage tank from the oil gas conveying pipeline, and simultaneously, volatile oil gas volatilizes to the collecting device from the gas phase interface, so that oil gas collection and storage are realized; judging the position of oil by using an oil-gas sensing device, and finishing the loading operation when the oil is close to the gas phase interface; when oil gas loading operation ended, compressed air got into the cylinder from gas-supply pipe I, and original compressed air discharged from gas-supply pipe II in the cylinder, and the pressure that compressed air produced makes oil gas pipeline descend, drives I actions of link mechanism simultaneously, and the closing plate upwards rotates under the drive, finally makes the sealing plug seal the gas phase interface, goes up the sealing member and closely laminates with lower sealing member, realizes sealing by force. The material passing type cylinder driving device is designed to realize sustainable force application through the injection quantity of compressed air, so that appropriate deformation quantity can be generated between the lower sealing element and the upper sealing element, and the gas collecting pipeline is ensured to be closed reliably and has no leakage.

Has the advantages that: the one-way cut-off mechanism is closed under the combined action of the linkage mechanism and the oil gas pressure of the gas phase pipeline, so that the backflow leakage of the oil gas through the gas collecting pipeline of the loading and unloading arm is effectively prevented, meanwhile, the operation procedures are reduced, and the labor intensity is reduced.

The injection amount of the compressed air realizes sustainable stress application, so that proper deformation can be generated between the sealing parts, and the gas collecting pipeline is ensured to be closed reliably without leakage.

Drawings

FIG. 1 is a schematic view of a gas collecting pipeline linkage one-way cutoff device for oil and gas loading and unloading, which is disclosed by the invention.

The numerical designations in the drawings represent the following: 1. an oil and gas delivery pipeline; 2. a gas delivery pipe I; 3. a gas delivery pipe II; 4. a material passing type cylinder; 5. a connecting flange; 6. a connecting rod mechanism I; 7. a link mechanism II; 8. a link mechanism III; 9. a compensator; 10. a lower seal member; 11. a sealing plug; 12. an upper seal member; 13. a gas phase interface; 14. a collection device; 15. sealing rubber; 16. and (7) storing the tank.

Detailed Description

The invention is further described below with reference to the accompanying drawings and specific embodiments.

Example 1

A gas collecting pipeline linkage one-way cut-off device for oil gas loading and unloading, see figure 1, includes oil gas conveying pipeline 1, collection device 14 and storage jar 16, oil gas conveying pipeline 1 one end is connected with the gas collecting pipeline of oil gas loading and unloading arm, and the other end penetrates inside storage jar 16 for to carrying oil gas in the storage jar 16, collection device 14 and storage jar 16 top intercommunication for collecting the volatile oil gas in storage jar 16 upper portion, a gas collecting pipeline linkage one-way cut-off device for oil gas loading and unloading still includes gas-supply pipe I2, gas-supply pipe II 3, punishment in advance type cylinder 4, flange 5, link mechanism I6, link mechanism II 7, link mechanism III 8, lower sealing member 10, sealing plug 11, upper seal 12, gaseous phase interface 13, punishment in advance type cylinder 4 and gaseous phase interface 13 are fixed in flange 5 upper end, and flange 5 lower extreme is connected with storage jar 16, the connecting flange 5 comprises an oil-gas sensing device arranged at the bottom end and is used for judging the position of oil, one end of the gas phase interface 13 penetrates through the connecting flange 5 and extends into the top end of the interior of the storage tank 16, the other end of the gas phase interface is connected with the collecting device 14, the upper sealing element 12 is arranged at one end of the gas phase interface 13 extending into the interior of the storage tank 16, the interior of the upper sealing element 12 is hollow, and the edge of the upper sealing element is connected with the edge of the gas phase interface 13;

the material passing type cylinder 4 comprises a cylinder body and a piston, a piston rod of the piston is the upper part of the oil gas conveying pipeline 1, a slide way for the piston to slide is arranged in the cylinder body, an interlayer channel is arranged on the outer side of the slide way on one side and is communicated with a sealed area formed by the bottom of the piston and the bottom of the cylinder body, the gas conveying pipe II 3 is connected with the top of the interlayer channel, and the gas conveying pipe I2 is communicated with the sealed area formed by the top of the piston and the top of the cylinder body;

the lower part outside of oil gas pipeline 1 and the one end fixed connection of link mechanism I6, the other end of link mechanism I6 is connected with the one end of link mechanism II 7 is articulated, the other end of link mechanism II 7 and the one end fixed connection of link mechanism III 8 hinge, link mechanism II 7 and link mechanism III 8's junction and the round pin body that is fixed in flange 5 through the support form the revolute pair, link mechanism III 8 and lower sealing member 10 welding, sealing plug 11 is connected with lower sealing member 10, the inside cavity of sealing plug 11 and last sealing member 12 corresponds, lower sealing member 10 and last sealing member 12 one-to-one and linear sealing.

The method for linking and unidirectionally cutting the gas collecting pipeline for oil and gas loading and unloading based on the device comprises the following steps: when oil gas loading operation is carried out, compressed air enters the material passing type cylinder 4 from the air conveying pipe II 3, original compressed air in the material passing type cylinder 4 is discharged from the air conveying pipe I2, the oil gas conveying pipeline 1 is lifted by pressure generated by the compressed air, meanwhile, the connecting rod mechanism I6 is driven to act, finally, the sealing plug 11 is separated from the gas phase interface 13, meanwhile, oil gas enters the storage tank 16 from the oil gas conveying pipeline 1, and meanwhile, volatile oil gas volatilizes to the collecting device 14 from the gas phase interface 13, so that oil gas collection and storage are realized; judging the position of oil by using an oil-gas sensing device, and finishing the loading operation when the oil is close to the gas phase interface 13; when oil gas loading operation ended, compressed air got into material type cylinder 4 from gas-supply pipe I2, and original compressed air discharged from gas-supply pipe II 3 in the material type cylinder 4, and the pressure that compressed air produced makes oil gas pipeline 1 descend, drives I6 actions of link mechanism simultaneously, and the closing plate upwards rotates under the drive, finally makes sealing plug 11 seal gas phase interface 13, goes up sealing member 12 and closely laminates with lower sealing member 10, realizes sealed by force. The driving design of the material passing type cylinder 4 is that sustainable stress application is realized through the injection quantity of compressed air, so that appropriate deformation quantity can be generated between the lower sealing element 10 and the upper sealing element 12, and the reliable closing and no leakage of a gas collecting pipeline are ensured.

Example 2

The one-way gas collecting pipeline linkage cut-off device for oil and gas loading and unloading further comprises a compensator 9, and the compensator 9 is arranged between the connecting rod mechanism I6 and the connecting rod mechanism II 7. The compensator 9 is a spring compensator, one end of the spring compensator is connected with the right end of the link mechanism II 7, the other end of the spring compensator is connected with the upper end of the link mechanism I6, the phenomenon that the connecting rod is damaged due to unfixed cylinder stroke caused by non-uniform sizes of the openings of the storage tanks can be effectively prevented, and the blocking mechanism (the upper sealing piece 12, the sealing plug 11 and the lower sealing piece 10) is enabled to be linked and opened along with the locking mechanism (the link mechanism). The gas collecting pipeline linkage one-way cut-off device for oil and gas loading and unloading further comprises sealing rubber 15, and the sealing rubber 15 is arranged at the joint of the connecting flange 5 and the storage tank 16. The sealing performance of the shut-off mechanism can be further improved. The upper seal 12, the lower seal 10 and the sealing plug 11 are rubber members. The height of the inner slide way of the material passing type cylinder 4 is 100-500 mm.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.