CN214653606U - Quick joint for low-temperature dangerous chemical fluid loading and unloading - Google Patents
Quick joint for low-temperature dangerous chemical fluid loading and unloading Download PDFInfo
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- CN214653606U CN214653606U CN202120820994.7U CN202120820994U CN214653606U CN 214653606 U CN214653606 U CN 214653606U CN 202120820994 U CN202120820994 U CN 202120820994U CN 214653606 U CN214653606 U CN 214653606U
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Abstract
The utility model relates to a quick-operation joint is used in loading and unloading of dangerous chemical industry fluid of low temperature, include: the butt welding ring is of a hollow cylindrical structure, the lower part of the butt welding ring is sleeved with a loose flange, and a first annular groove is formed in the loose flange; the second sleeve is sleeved in the middle of the butt welding ring; the first sleeve is annularly sleeved at the lower part of the second sleeve, and a mounting table is arranged on the first sleeve; the clamping component is movably connected with the mounting table and is configured to be clamped with the tank car interface flange; the handheld component is sleeved on the upper part of the second sleeve in a surrounding manner and is fixedly connected with the second sleeve; the transmission part is nested in the first annular groove and abuts against the lower end of the second sleeve, and the transmission part is configured to transmit the downward movement force of the second sleeve to the loose flange. The utility model discloses the device is all need not pull down installation fastener at the loading and unloading process. The whole process is simple, convenient, time-saving and labor-saving, and the working efficiency is greatly improved.
Description
Technical Field
The utility model relates to a quick-operation joint is used in loading and unloading of dangerous chemical industry fluid of low temperature belongs to low temperature loading and unloading technical field.
Background
The low-temperature loading and unloading arm is an industrial product developed in recent years in China and is mainly used for loading and unloading low-temperature fluid in the petrochemical industry. The tail interface of domestic tank car or tank is fixed standard flange, and the butt joint mode when loading and unloading has loose flange connection and dry joint connection. The dry type joint is also called as a dry type quick joint, the male end is a fixed end which is arranged on a tank car and the like for storing liquid, the female end is a hose end/crane end, and the two ends are both provided with self-sealing poppet valves, so that the quick connection and disconnection of a fluid pipeline are realized, and no leakage exists in the whole process. Dry fittings are currently used primarily for hose connections and vehicle charging. Although the dry-type joint can be refitted and connected with the existing tank car arm to realize quick connection and locking with the tank car, nitrogen purging cannot be carried out on the tank car pipeline and the tank car arm, and the operation regulations of the tank car in China are not met. The loose flange connection is that a metal winding pad is put between two flanges and is tightly combined together by bolts. When loose set flange butt joint, need the manual work to align 4 bolts of back manual tightening with both ends flange, sealed through the gasket that compresses tightly in the middle of the flange and realize airtight loading and unloading fluid, still need the manual bolt of loosening after filling the dress, repeated assembly, dismantlement need take longer time, and work efficiency is than lower, and need twist off the fastener completely at this in-process, and the fastener is lost easily in the operation process, influences work efficiency. The process of manually operating the bolt greatly influences the butt joint speed of the tank car, and the loose flange is not additionally provided with bending stress after being stressed and is only suitable for occasions with lower pressure.
At present, the filling connection mode of foreign tank cars is mainly a mode of connecting a flange and a dry joint to a hose. Tank cars are filled in a manner that the U.S., australia and singapore gradually use quick connectors (break valves or liquid filling guns) for connecting hoses, the technology of the quick connectors is high, and the use of the quick connectors is common in both Arta and JC Carter, germany.
The 'ice breaking' technology of the JC Carter liquid filling gun prevents freezing during filling, the whole filling process is completed within 5 minutes, the installation of the filling gun on a vehicle is simple and easy due to a press joint on a filling port, the disconnection after filling is completely free from waiting, and any other brand can not be durable and efficient. For added safety, the filling gun and the filling port both contain independent shut-off valves. The LNG outflow can be prevented when unexpectedly disconnected. The nitrogen purging operation is not needed, and the simple operation of connection can be completed by one action; the patented interface seal is obtained, preventing leakage during filling. The liquid filling gun is opened and closed in a double-handle scissor type, and the filling port is arranged on the LNG automobile. This fills dress mode can realize filling fast, and easy operation is convenient, swift, is equipped with quick-operation joint at the hose end, is equipped with the quick-operation joint interface at the tank wagon, only needs to connect the butt joint with quick-operation joint and tank wagon, and the public female joint is locked to manual rotatory 15 degrees, and rotatory 90 degrees again open the internal valve can, nevertheless can't carry out nitrogen gas and sweep. During the filling process, due to the low temperature of LNG, two joints of the quick joint are easily frozen together and cannot be opened, and air or nitrogen is used for blowing and deicing.
Disclosure of Invention
To the above outstanding problem, the utility model provides a quick-operation joint is used in dangerous chemical industry fluid loading and unloading of low temperature, the device make loading and unloading arm flange and tank wagon afterbody's flange butt joint all the time by the restriction in specific scope through the half surrounding structure that exhibition arm and jack catch constitute for two flange butt joints back, the jack catch not only can compress tightly the seal gasket between the two flanges, can also restrict the moving direction of two flange both sides. Therefore, only the relative positions of the two flanges need to be corrected upwards or downwards, the two flanges can be fixed by the fixing piece at the same time, the butt joint process of the two flanges is simple, and the labor amount is reduced.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a quick coupling for loading and unloading low-temperature dangerous chemical fluid comprises the following components:
the butt welding ring is of a hollow cylindrical structure, the lower part of the butt welding ring is sleeved with a loose flange, and a first annular groove is formed in the loose flange;
the second sleeve is sleeved in the middle of the butt welding ring;
the first sleeve is sleeved at the lower part of the second sleeve in a surrounding manner, and a mounting table is arranged on the first sleeve;
the clamping component is movably connected with the mounting table and is configured to be clamped with the tank car interface flange;
the handheld part is sleeved on the upper part of the second sleeve in a surrounding mode and is fixedly connected with the second sleeve in a surrounding mode, and the handheld part is configured to drive the second sleeve to move downwards under the driving of a user;
the transmission part is nested in the first annular groove and abuts against the lower end of the second sleeve, the transmission part is configured to transmit the downward movement force of the second sleeve to the loose flange, and then the loose flange drives the butt welding ring to move downwards.
The quick coupling for loading and unloading of low-temperature dangerous chemical fluid is characterized in that preferably, a second annular groove and an external thread are arranged on the outer wall surface of the second sleeve, a third annular groove and an internal thread matched with the external thread of the second sleeve are arranged on the inner wall surface of the first sleeve, and a first sealing ring and a second sealing ring are respectively arranged in the second annular groove and the third annular groove.
Quick-operation joint for loading and unloading of low temperature dangerous chemical industry fluid, preferably, still include a plurality of stoppers, it is a plurality of the stopper sets up on the loose flange, be provided with the second boss that extends to the axle center direction on the stopper, be provided with first boss on the telescopic lower extreme circumferential direction of second, the second boss is located the top of first boss, and the two looks butt, the stopper is configured as the restriction the not hard up slip of drive disk assembly.
Quick-operation joint for loading and unloading of low temperature dangerous chemical industry fluid, preferably, be provided with the recess on the loose flange, be provided with on the chucking part with the arch of the recess looks adaptation of loose flange, the two cooperatees and prevents the chucking part is in following when handheld part rotates and rotates.
Preferably, the clamping part is a clamping jaw, the upper end of the clamping jaw is provided with a second through hole, the mounting table is provided with a first through hole, a pin shaft penetrates through the first through hole on the mounting table and the second through hole on the clamping jaw to movably connect the first through hole and the second through hole, two ends of the pin shaft are provided with pin shaft holes, and the pin shaft holes are configured to accommodate lock pins.
Quick-operation joint is used in loading and unloading of low temperature dangerous chemical industry fluid, preferably, hand-held part is the hand wheel, the hand wheel includes handheld portion and fixed part, the cover can be dismantled to the fixed part and establish the telescopic upper end of second, the hand wheel is configured to drive under user's drive the second sleeve upwards or downstream.
The quick joint for loading and unloading the low-temperature dangerous chemical fluid is characterized in that preferably, the transmission part is a bearing, and the lower end of the butt welding ring is provided with a butt joint port.
Preferably, the inner diameter and the outer diameter of the first sleeve are both large at the upper end and small at the lower end, the outer diameter of the upper end of the second sleeve is smaller than that of the lower end, and the inner diameter of the second sleeve is consistent with that of the butt welding ring.
Based on above-mentioned quick-operation joint is used in dangerous chemical fluid loading and unloading of low temperature, the utility model discloses still provide the device's operating method, include following step:
when the groove car is connected with the groove car, the lower end of the butt welding ring is aligned with a groove car interface flange, the clamping part is rotated after the alignment, the clamping part is buckled on the back surface of the groove car interface flange, the handheld part is rotated, the second sleeve is driven to rotate when the handheld part rotates, the second sleeve moves downwards, the second sleeve rotates downwards to move downwards to extrude the transmission part, the transmission part drives the loose flange to move downwards, and then the loose flange drives the butt welding ring to move downwards; and along with the continuous rotation of the handheld part, the lower end of the butt welding ring is gradually attached to the tank car interface flange until the butt welding ring and the tank car interface flange are tightly pressed and sealed, and the handheld part cannot rotate to complete car receiving.
The utility model discloses owing to take above technical scheme, it has following advantage:
1. the utility model discloses a half surrounding structure that exhibition arm and jack catch constitute makes the flange of loading and unloading arm and the butt joint of the flange of tank wagon afterbody be restricted in specific scope all the time for two flange butt joints back, the jack catch not only can compress tightly the seal gasket between two flanges, can also restrict the moving direction of two flange both sides. Therefore, only the relative positions of the two flanges need to be corrected upwards or downwards, the two flanges can be fixed by the fixing piece (2 bolts) at the same time, the butt joint process of the two flanges is simple, and the labor amount is reduced.
2. The utility model discloses a swing joint structure of jack catch for the jack catch can avoid the flange of tank wagon afterbody when rotating, avoids the jack catch to need the condition of dismantling when two flanges dock. The jack catch is as an organic whole with the adapter sleeve of loop, but the jack catch can rotate around its installation hinge 0 ~ 90 degrees, and the installation fastener need not all be dismantled in the loading and unloading process. The whole process is simple, convenient, time-saving and labor-saving, and the working efficiency is greatly improved. The utility model discloses the device is a quick-operation joint for liquid, gas transmission, can be used to dangerous chemical industry medium's such as oil, hydrogen, LNG loading and unloading car to connect the use, and the hose that can arrange in pairs uses.
3. The utility model discloses respectively increase a sealing washer in the upper and lower both ends of device first sleeve and second sleeve, prevent that the comdenstion water from getting into inside back ice knot, through low temperature bearing with second sleeve and loose cover flange joint, eliminated the direct effect of second sleeve to the loose cover flange, avoided the direct friction of second sleeve to the loose cover flange, improved the life of loose cover flange, low temperature bearing has also reduced the required strength of hand wheel when rotatory fastening.
4. The utility model discloses the device has changed the fixed mode of conventional loose flange, rotates through the hand wheel, drives second sleeve 3 and low temperature bearing downstream, and low temperature bearing promotes loose flange, and loose flange compresses tightly the welding ring, makes between tank car interface flange, metal winding pad, the pipe that hangs down sealed, has solved the fixed live time of conventional flange long, and sealed effect poor technical problem.
Drawings
Fig. 1 is a schematic perspective view of a quick coupling for loading and unloading low-temperature hazardous chemical fluid according to an embodiment of the present invention;
fig. 2 is a top view of the quick coupling for loading and unloading low-temperature hazardous chemical fluid according to the embodiment of the present invention;
fig. 3 is a front view of the quick coupling for loading and unloading low-temperature dangerous chemical fluid according to the embodiment of the present invention;
fig. 4 is a cross-sectional view of the quick coupling for loading and unloading low-temperature hazardous chemical fluid according to the embodiment of the present invention;
fig. 5 is a schematic partial enlarged view of a first seal ring in the quick coupling for loading and unloading low-temperature hazardous chemical fluid according to the embodiment of the present invention;
fig. 6 is a schematic partial enlarged view of a second seal ring in the quick coupling for assembling and disassembling low-temperature hazardous chemical fluid according to the embodiment of the present invention;
the respective symbols in the figure are as follows:
1-hand wheel, 101-hand-held part, 102-fixed part; 2-a first sleeve; 3-a second sleeve, 301-a first boss; 4-clamping jaws; 5-butt welding ring, 501-butt joint interface; 6-bolt; 7-a lock pin; 8-a pin shaft; 9-a limiting block, 901-a second boss; 10-a bearing; 11-loose flange; 12-a first sealing ring; 13-a second sealing ring; 14-mounting table.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention are clearly and completely described below, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the ordinary person in the art without creative work belong to the protection scope of the present invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
As shown in figure 1, the utility model provides a quick-operation joint is used in loading and unloading of dangerous chemical fluid of low temperature, including following part: the butt welding ring 5 is of a hollow cylindrical structure, the lower part of the butt welding ring 5 is sleeved with a loose flange 11, and a first annular groove is formed in the loose flange 11; the second sleeve 3, the second sleeve 3 ring is sleeved in the middle of the butt welding ring 5; the first sleeve 2 is sleeved at the lower part of the second sleeve 3 in a sleeving manner, and the first sleeve 2 is provided with an installation table 14; the clamping component is movably connected with the mounting table 14 and is configured to be clamped with the tank car interface flange; the handheld part is sleeved on the upper part of the second sleeve 3 in a surrounding manner and is tightly connected with the second sleeve 3, and the handheld part is configured to drive the second sleeve 3 to move downwards under the driving of a user; the transmission part is nested in the first annular groove and abuts against the lower end of the second sleeve 3, the transmission part is configured to transmit the downward movement force of the second sleeve 3 to the loose flange 11, and then the loose flange 11 drives the butt welding ring 5 to move downward. The utility model discloses the device is all need not pull down installation fastener at the loading and unloading process. The whole process is simple, convenient, time-saving and labor-saving, and the working efficiency is greatly improved.
In a preferred embodiment of the present invention, as shown in fig. 1 and 3, the hand wheel 1 is tightly connected to the second sleeve 3 by means of the hexagon socket head cap screw 6, and the number of the hexagon socket head cap screw 6 is 3.
In a preferred embodiment of the present invention, as shown in fig. 4, the outer wall surface of the second sleeve 3 is provided with a second annular groove and an external thread, the inner wall surface of the first sleeve 2 is provided with a third annular groove and an internal thread adapted to the external thread of the second sleeve 3, and the second annular groove and the third annular groove are respectively provided with a second sealing ring 13 and a first sealing ring 12.
In a preferred embodiment of the present invention, as shown in fig. 4, a second annular groove and an external thread are provided on the outer wall surface of the second sleeve 3, an internal thread adapted to the external thread of the second sleeve 3 is provided on the inner wall surface of the first sleeve 2, and a second sealing ring 13 is provided in the second annular groove.
In a preferred embodiment of the present invention, as shown in fig. 4, an external thread is provided on the outer wall surface of the second sleeve 3, a third annular groove and an internal thread adapted to the external thread of the second sleeve 3 are provided on the inner wall surface of the first sleeve 2, and a first sealing ring 12 is provided in the third annular groove.
The utility model discloses an in preferred embodiment, as shown in fig. 1-4, still include a plurality of stoppers 9, a plurality of stoppers 9 set up on loose flange 11, are provided with the second boss 901 that extends to the axle center direction on stopper 9, are provided with first boss 301 in the lower extreme circumference direction of second sleeve 3, and second boss 901 is located the top of first boss 301, and the two looks butt, and stopper 9 is configured as the not hard up slip of restriction drive disk assembly.
The utility model discloses an in the preferred embodiment, as shown in fig. 1, 2, be provided with the recess on the loose flange 11, be provided with on the chucking part with the arch of the recess looks adaptation of loose flange 11, the two cooperatees and prevents that the chucking part from following when handheld part rotates and rotating.
In a preferred embodiment of the present invention, as shown in fig. 1-4, the clamping component is a clamping jaw 4 or any other component capable of generating clamping force, the number is two, a second through hole is formed at the upper end of the clamping jaw 4, a first through hole is formed on the mounting platform 14, a pin shaft 8 (preferably, a B-shaped pin shaft) passes through the first through hole on the mounting platform 14 and the second through hole on the clamping jaw 4 to movably connect the two, pin shaft holes are formed at both ends of the pin shaft 8, and the pin shaft holes are configured to receive the locking pins 7.
In a preferred embodiment of the present invention, as shown in fig. 1-3, the hand-held component is a hand wheel 1 or any other component capable of generating a pushing force, the hand wheel 1 includes a hand-held portion 101 and a fixed portion 102, the fixed portion 102 is detachably sleeved on the upper end of the second sleeve 3, and the hand wheel 1 is configured to drive the second sleeve 3 to move upwards or downwards under the driving of a user.
In a preferred embodiment of the present invention, as shown in fig. 1 and 4, the transmission component is a bearing 10 or any other component capable of generating transmission force, and the lower end of the butt-welding ring 5 is provided with a butt-joint interface 501. The bearing 10 is preferably a cryogenic bearing, and the bearing 10 reduces both the friction of the second sleeve 3 against the loose flange 11 and the force required to rotationally tighten the handwheel 1.
In a preferred embodiment of the present invention, the inner and outer diameters of the first sleeve 2 are both small at the upper end and large at the lower end, and the upper end of the first sleeve 2 is sealed with the second sleeve 3 for placing the O-ring seal, so that the first sleeve is made small to be matched with the second sleeve 3; the outer diameter of the upper end of the second sleeve 3 is smaller than that of the lower end, the inner diameter of the second sleeve 3 is consistent with the outer diameter of the butt welding ring 5, and the diameter of the bottom surface of the second sleeve 3 is basically consistent with the outer diameter of the bearing 10, so that the second sleeve is conveniently compressed with the bearing 10.
Based on above-mentioned quick-operation joint is used in dangerous chemical fluid loading and unloading of low temperature, the utility model discloses still provide the device's operating method, include following step:
when the groove car is connected with the groove car, the lower end of the butt welding ring 5 is aligned with the groove car interface flange, the clamping part is rotated after alignment, the clamping part is buckled on the back surface of the groove car interface flange, the handheld part is rotated, the second sleeve 3 is driven to rotate when the handheld part is rotated, the second sleeve 3 moves downwards, the second sleeve 3 rotates downwards to extrude the transmission part, the transmission part drives the loose flange 11 to move downwards, and then the loose flange 11 drives the butt welding ring 5 to move downwards; along with the continuous rotation of the handheld part, the lower end of the butt welding ring 5 is gradually attached to the tank car interface flange until the two are tightly pressed and sealed, and the handheld part cannot rotate to complete car receiving.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (8)
1. The utility model provides a quick-operation joint is used in loading and unloading of dangerous chemical industry fluid of low temperature which characterized in that includes following part:
the butt welding ring (5) is of a hollow cylindrical structure, the lower part of the butt welding ring (5) is sleeved with a loose flange (11), and a first annular groove is formed in the loose flange (11);
the second sleeve (3), the said second sleeve (3) ring is covered in the middle part of the said butt welding ring (5);
the first sleeve (2), the first sleeve (2) is sleeved on the lower part of the second sleeve (3) in a sleeving manner, and an installation table (14) is arranged on the first sleeve (2);
the clamping component is movably connected with the mounting table (14) and is configured to be clamped with a tank car interface flange;
the hand-held part is sleeved on the upper part of the second sleeve (3) in a surrounding manner and is tightly connected with the second sleeve, and the hand-held part is configured to drive the second sleeve (3) to move downwards under the driving of a user;
the transmission component is nested in the first annular groove and abuts against the lower end of the second sleeve (3), the transmission component is configured to transmit the downward movement force of the second sleeve (3) to the loose flange (11), and then the loose flange (11) drives the butt welding ring (5) to move downward.
2. The quick coupling for loading and unloading of low-temperature dangerous chemical fluid according to claim 1, wherein the outer wall surface of the second sleeve (3) is provided with a second annular groove and an external thread, the inner wall surface of the first sleeve (2) is provided with a third annular groove and an internal thread matched with the external thread of the second sleeve (3), and the second annular groove and the third annular groove are respectively provided with a first sealing ring (12) and a second sealing ring (13).
3. The quick coupling for loading and unloading of low-temperature dangerous chemical fluid as recited in claim 1, further comprising a plurality of limiting blocks (9), wherein the plurality of limiting blocks (9) are disposed on the loose flange (11), a second boss (901) extending towards the axial center direction is disposed on the limiting blocks (9), a first boss (301) is disposed on the lower end of the second sleeve (3) in the circumferential direction, the second boss (901) is located above the first boss (301) and is abutted against the first boss, and the limiting blocks (9) are configured to limit the transmission component from loosening and sliding.
4. The quick coupling for low-temperature dangerous chemical fluid loading and unloading according to claim 1, wherein a groove is arranged on the loose flange (11), a protrusion matched with the groove of the loose flange (11) is arranged on the clamping part, and the protrusion are matched to prevent the clamping part from rotating when the handheld part rotates.
5. The quick coupling for loading and unloading of low-temperature dangerous chemical fluid as recited in claim 1, wherein the clamping member is a clamping jaw (4), the upper end of the clamping jaw (4) is provided with a second through hole, the mounting platform (14) is provided with a first through hole, a pin (8) passes through the first through hole on the mounting platform (14) and the second through hole on the clamping jaw (4) to movably connect the two, two ends of the pin (8) are provided with pin holes, and the pin holes are configured to accommodate the locking pins (7).
6. The quick coupling for loading and unloading of low-temperature dangerous chemical fluid according to claim 1, wherein the hand-held component is a hand wheel (1), the hand wheel (1) comprises a hand-held part (101) and a fixed part (102), the fixed part (102) is detachably sleeved on the upper end of the second sleeve (3), and the hand wheel (1) is configured to drive the second sleeve (3) to move upwards or downwards under the driving of a user.
7. The quick coupling for loading and unloading of cryogenic hazardous chemical fluids according to claim 1, characterized in that the transmission component is a bearing (10) and the butt welding ring (5) is provided with a butt joint (501) at its lower end.
8. The quick coupling for loading and unloading of cryogenic hazardous chemical fluids according to claim 1, characterized in that the inner and outer diameters of the first sleeve (2) are both larger at the upper end and smaller at the lower end, the outer diameter of the upper end of the second sleeve (3) is smaller than the outer diameter of the lower end, and the inner diameter of the second sleeve (3) is consistent with the outer diameter of the butt welding ring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120820994.7U CN214653606U (en) | 2021-04-21 | 2021-04-21 | Quick joint for low-temperature dangerous chemical fluid loading and unloading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120820994.7U CN214653606U (en) | 2021-04-21 | 2021-04-21 | Quick joint for low-temperature dangerous chemical fluid loading and unloading |
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| Publication Number | Publication Date |
|---|---|
| CN214653606U true CN214653606U (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120820994.7U Active CN214653606U (en) | 2021-04-21 | 2021-04-21 | Quick joint for low-temperature dangerous chemical fluid loading and unloading |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113148935A (en) * | 2021-04-21 | 2021-07-23 | 中海石油气电集团有限责任公司 | Quick connector for loading and unloading low-temperature dangerous chemical fluid and operation method thereof |
-
2021
- 2021-04-21 CN CN202120820994.7U patent/CN214653606U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113148935A (en) * | 2021-04-21 | 2021-07-23 | 中海石油气电集团有限责任公司 | Quick connector for loading and unloading low-temperature dangerous chemical fluid and operation method thereof |
| CN113148935B (en) * | 2021-04-21 | 2024-07-16 | 中海石油气电集团有限责任公司 | Quick connector for loading and unloading low-temperature dangerous chemical fluid and operation method thereof |
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