CN110240110B - Pressing mechanism of sealing cover for sealing loading crane pipe - Google Patents
Pressing mechanism of sealing cover for sealing loading crane pipe Download PDFInfo
- Publication number
- CN110240110B CN110240110B CN201910687063.1A CN201910687063A CN110240110B CN 110240110 B CN110240110 B CN 110240110B CN 201910687063 A CN201910687063 A CN 201910687063A CN 110240110 B CN110240110 B CN 110240110B
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- China
- Prior art keywords
- inner tube
- fastening
- sealing cover
- pressure
- pushing mechanism
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- 238000007789 sealing Methods 0.000 title claims abstract description 50
- 230000007246 mechanism Effects 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 230000003993 interaction Effects 0.000 abstract description 2
- 239000007791 liquid phase Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 229920001971 elastomer Polymers 0.000 description 4
- 238000005191 phase separation Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000005501 phase interface Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/42—Filling nozzles
- B67D7/54—Filling nozzles with means for preventing escape of liquid or vapour or for recovering escaped liquid or vapour
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses a pushing mechanism of a sealing cover for sealing loading of a crane pipe. The pushing mechanism is positioned above the sealing cover and comprises a driving device, a pressure device and a fastening device, wherein the driving device is connected with the pressure device, and the fastening device is arranged outside an inner pipe of the telescopic vertical pipe of the crane pipe; the pressure device is arranged outside the fastening device; the pressure device and the fastening device and the inner tube can move relatively; the pressure means provides the fastening means with a pushing force for fastening the inner tube and a pressure for moving the inner tube relative to the outer tube. The pushing mechanism utilizes the interaction force between the pressure device and the fastening device to enable the fastening device to automatically fasten the inner tube, achieves the effect of pressing the sealing cover through the movement of the inner tube, and ensures the sealing reliability of the sealed loading.
Description
Technical Field
The invention relates to a pushing device structure, in particular to a pushing mechanism for a sealing cover of a loading arm sealing loading machine.
Background
The oil filling riser is a common device in petrochemical industry and is used for loading and unloading petroleum, natural gas and other fluids on the tank truck. When the oil filling riser is used for sealing loading, a sealing cap is generally arranged outside the oil filling riser to reduce volatilization of oil gas, and a tank opening is sealed in the loading and unloading process so as to reduce environmental pollution. However, due to factors such as pressure of oil evaporation gas or increase of vehicle load, the oil filling riser and the tank truck port are easy to move, so that the sealing cap is not tightly sealed, and the problem of oil gas leakage is caused.
In order to solve the problem that the sealing of the airtight loading is unreliable, the sealing cap is required to be pressed on the port of the tank truck. Chinese patent ZL201820014980.4 provides a compress tightly sealing device, provides the compressive force through compressing tightly the cylinder, adopts bulb connecting portion in order to guarantee sealed apron and tank wagon mouth laminating. The compressing device lifts the inner tube and the sealing gasket by using a hollow cylinder, and the travel of the inner tube is usually between 1000mm and 1500mm due to different heights of tank openings of the tank truck, so that the travel of the cylinder is longer (about 1800 mm); in addition, the cylinder is sleeved on the outer tube, and the diameter of the cylinder barrel is larger. Therefore, the compressing and sealing device has the advantages of complex structure, large volume, heavy weight, difficult processing and high cost.
The Chinese patent ZL201821098675.4 relates to an oil storage and transportation oil gas recovery system, wherein a clamping device comprises a clamping piece hinged to the upper portion of an oil gas collecting pipe and a telescopic rod, one end of the telescopic rod is hinged to the middle portion of the clamping piece, and the clamping device is used for controlling the expansion of the clamping piece. When sealed, the telescoping member shortens so that the clamping member approaches and clamps the tank wagon mouth. However, the clamping structure is only suitable for clamping and sealing the air bag at the end face of the groove, and the structure is not firm enough, so that the sealing effect is poor.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the pushing mechanism for pressing the sealing cover, which has simple structure and good sealing effect.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the pushing mechanism of the sealing cover of the sealed loading crane pipe is positioned above the sealing cover and comprises a driving device and a pressure device, wherein the driving device is connected with the pressure device; the telescopic vertical tube of the crane tube comprises an inner tube and an outer tube; the pushing mechanism further comprises a fastening device, and the fastening device is arranged outside the inner pipe; the pressure device is arranged outside the fastening device; the pressure device and the fastening device and the inner tube can move relatively; the pressure means provides the fastening means with a pushing force for fastening the inner tube and a pressure for moving the inner tube relative to the outer tube.
Further, the pushing mechanism further comprises a telescopic device, and the telescopic device is connected with the fastening device and is positioned between the fastening device and the sealing cover.
Further, the telescopic device adopts a pressure spring assembly.
Further, the driving device is fixed on the outer tube.
Further, at least one of the contact surfaces of the pressure device and the fastening device is an inclined surface.
Further, the pressure device adopts a pressing block with an inclined surface, and the inclined surface of the pressing block faces the fastening device.
Further, the pressure device further comprises a pressing plate and a pressing block sleeve, the pressing block is arranged in the pressing block sleeve, the pressing block sleeve is fixed on the pressing plate, and the pressing plate is connected with the driving device.
Further, the fastening devices are multiple and uniformly distributed along the circumference of the inner tube.
Further, the fastening device is of an annular structure and sleeved outside the inner tube.
Further, the fastening device comprises a fastener and a support sleeve, wherein the fastener is installed in the support sleeve.
The pushing mechanism utilizes the interaction force between the pressure device and the fastening device to enable the fastening device to automatically fasten the inner tube, achieves the effect of pressing the sealing cover through the movement of the inner tube, and ensures the sealing reliability of the sealed loading. The pushing mechanism has the advantages of simple structure, small volume, light weight, large thrust, convenient processing, shortened cylinder stroke, cost saving and the like.
Drawings
FIG. 1 is a schematic view of a mechanism according to an embodiment of the present invention before pushing.
Fig. 2 is a schematic view of the mechanism of the embodiment of the present invention after pushing.
In the figure, a 1-truss connecting flange, a 2-liquid phase interface connecting flange, a 3-gas phase interface connecting flange, a 4-gas-liquid phase separation tee joint, a 5-liquid phase pipe, a 6-outer pipe, a 7-inner pipe, an 8-driving device, a 9-connecting seat, a 10-pressing plate, a 11-pressing block sleeve, a 12-pressing block, a 13-ball, a 14-supporting sleeve, a 15-telescoping device and a 16-sealing cover.
Detailed Description
The invention is elucidated below on the basis of embodiments shown in the drawings. The presently disclosed embodiments are considered in all respects to be illustrative and not restrictive. The scope of the present invention is not limited by the following description of the embodiments, but is only indicated by the scope of the claims.
The pushing mechanism is applied to the closed loading process of the truss crane pipe. The embodiment relates to a main structure of a truss crane pipe, which comprises: a gas-liquid phase separation tee 4, a liquid phase pipe 5 and a telescopic vertical pipe (comprising an outer pipe 6 and an inner pipe 7). Wherein the gas-liquid phase separation tee joint 4 is used for recovering residual gas, and the liquid phase pipe 5 is a multi-stage telescopic pipe. The outer tube 6 is fixed on the outer flange of the gas-liquid phase separation tee 4. The inner tube 7 is sleeved inside the outer tube 6 and coaxially arranged, can slide up and down along the inner wall of the outer tube 6, the lower end of the inner tube 7 is connected with the sealing cover 16, and the inner tube 7 can drive the sealing cover 16 to move up and down. The sealing cover 16 is made of medium-resistant rubber and is contacted with the tank opening of the tank wagon.
The pushing mechanism is provided at the lower end of the outer tube 6 above the sealing cover 16. The pushing mechanism comprises a driving means 8, a pressing means, a fastening means and a telescopic means 15. The driving means 8 are connected to pressure means, which are located outside the fastening means, and the telescopic means 15. The pressure means can move up and down relative to the fastening means, which can move up and down along the outer surface of the inner tube 7.
The driving device 8 is used for driving the pressure device to move up and down, and an air cylinder, an oil cylinder or the like can be adopted. In this embodiment, a connecting seat 9 is provided on the outer wall of the lower portion of the outer tube 6, and the driving device 8 is fixed on the connecting seat 9.
The pressure device is used for providing a pushing force, namely, the pushing force for fastening the inner tube inwards and the pressure for driving the inner tube to move downwards, and particularly, an integrated pressing block structure can be adopted, or a split structure comprising a pressing plate 10, a pressing block sleeve 11 and a pressing block 12 as shown in fig. 1 can be adopted, wherein the pressing plate 10 is sleeved outside the inner tube 6 and is connected with an output rod of the driving device 8, the pressing block 12 is fixed on the inner side of the pressing block sleeve 11, and the pressing block sleeve 11 and the pressing plate 10 are fixed together.
The fastening device can adopt a split structure shown in fig. 1, namely, the fastening device comprises a fastening ball 13 and a supporting sleeve 14, wherein the supporting sleeve 14 is sleeved on the inner side of the pressing sleeve 11 and positioned on the outer side of the inner tube 7, the supporting sleeve 14, the pressing sleeve 11 and the inner tube 7 can relatively move, and the ball 13 is arranged in a small hole or a groove on the supporting sleeve 14 and can roll. The balls 13 are provided in plurality and uniformly distributed along the circumference of the inner tube 7, and correspondingly, the pressure means are also provided in plurality. The fastening device can also be in the form of an integral hoop, which is directly sleeved outside the inner tube 7 without the support sleeve 14. The contact surface between the pressing device and the fastening device needs to be provided with an inclined surface, and the other contact surface is not limited in form, and can be a T-shaped inclined block, a sphere, a cylinder, a triangle body and the like, so long as the fastening device is forced in the direction towards the inner tube 7. In this embodiment, the contact surface of the pressing block 12 is set to be an inclined surface, and the ball 13 of a sphere or a cylinder is adopted as a fastener of the fastening device.
The telescopic device 15 is located below the fastening device, and is used for adjusting the height of the fastening device, and mainly comprises a spring and a screw rod, although other structures capable of achieving similar effects and capable of being telescopically adjusted, such as a tension spring, a torsion spring, a rubber elastomer and the like, can be adopted. One end of the screw rod of the embodiment passes through a hole on the flange of the supporting sleeve 14 to be connected with the pressing block sleeve 11, and the other end is provided with a step. The lower end of the spring is pressed on the step of the screw rod, the upper end of the spring is pressed on the lower end face of the supporting sleeve 14, the spring pushes the supporting sleeve 14 upwards by taking the step face of the lower end of the screw rod as a support, and the pressing force of the spring is larger than the sum of the gravity of the supporting sleeve 14 and the balls 13.
The working process of the pressing mechanism of the present embodiment is described in detail below:
in the initial state, as shown in fig. 1, the inner tube 7 is contracted into the outer tube 6, the driving device 8 does not work, the extension stroke is zero, the upper end face (i.e. the position A in fig. 1) of the supporting sleeve 14 is attached to the lower end face (i.e. the position B in fig. 1) of the outer tube 6, the supporting sleeve 14 is relatively fixed with the outer tube 6, the spring force can not push the supporting sleeve 14 to move upwards, no acting force exists between the inclined surface of the pressing block 12 and the balls 13, gaps exist between the balls 13 and the outer surface of the inner tube 7, smooth movement of the inner tube 7 and the outer tube is ensured, and when the inner tube 7 moves downwards to the contact of the sealing cover plate 16 and the upper part of the tank opening, the inner tube 7 does not move downwards any more. Next, the driving device 8 is started, as shown in fig. 2, the extending rod of the driving device 8 moves downwards to push the pressing device formed by the pressing plate 10, the pressing block sleeve 11 and the pressing block 12, the pressing device moves downwards, and the supporting sleeve 14 does not descend in a short time under the action of the spring because the spring pressing force of the telescopic device 15 is larger than the gravity of the fastening device. With the downward movement of the pressure device, the screw rod moves downwards, the spring stretches, the pressure is released, but after the release, the pressure of the spring is ensured to be larger than the sum of the gravity of the supporting sleeve 14 and the balls 13, the inclined surface of the pressing block 12 is contacted with the balls 13, the balls 13 move inwards in the radial direction, when the balls 13 are contacted with the inner pipe 7, the downward pressing force of the pressing block 12 generates an increased horizontal component force through the inclined surface to press the inner pipe 7, the friction generated by the pressing force is larger than the downward pressure of the driving device 8, so that the pushing mechanism does not slip, the pressure of the driving device 8 is transmitted to the inner pipe 7 and the sealing cover 16 connected with the lower end through the pushing mechanism, and the rubber pad at the lower part of the sealing cover 16 presses a sealing tank car opening.
When loading is completed, the extending rod of the driving device 8 is retracted upwards, the extending rod drives the pressure device to move upwards, the pressing block sleeve 10 and the pressing block 12 move upwards at the moment, the inclined surface of the pressing block 12 has no pressing force on the ball 13, but the ball 13 is not separated from the inclined surface of the pressing block 12 and the inner tube 7 due to the pressure action of the spring of the telescopic device 15 at the lower end of the supporting sleeve 14, but only rolls and rises in the ball hole, and the movement of the inner tube 7 is not influenced. When the driving device 8 continues to move upwards, the upper end surface (i.e. the position A in fig. 1) of the supporting sleeve 14 is attached to the lower end surface (i.e. the position B in fig. 1) of the outer tube 6, the supporting sleeve 14 is relatively fixed with the outer tube 6, the spring force cannot push the supporting sleeve 14 to move upwards, the pressure device also continues to move upwards, at this time, the inclined surface of the pressing block 12 and the ball 13 have no acting force (can not contact), the ball 7 and the outer surface of the inner tube 7 have a gap, the driving device 8 continues to move upwards until the stroke is finished, and the inner tube 7 drives the sealing cover 16 to ascend and retract into the outer tube 6, so that the closed loading process of the truss crane tube is completed.
Claims (7)
1. The pushing mechanism of the sealing cover of the sealed loading crane pipe is positioned above the sealing cover and comprises a driving device and a pressure device, wherein the driving device is connected with the pressure device; the telescopic vertical tube of the crane tube comprises an inner tube and an outer tube, and is characterized in that the pushing mechanism further comprises a fastening device, and the fastening device is arranged outside the inner tube; the pressure device is arranged outside the fastening device; the pressure device and the fastening device and the inner tube can move relatively; the pressure device provides a pushing force for fastening the inner tube and a pressure for enabling the inner tube to move relative to the outer tube to the fastening device; the pressure device adopts a pressing block with an inclined surface, and the inclined surface of the pressing block faces the fastening device; the method comprises the steps of carrying out a first treatment on the surface of the The fastening device comprises a fastening piece and a supporting sleeve, and the fastening piece is arranged in the supporting sleeve; the fastener adopts a ball of a sphere or a cylinder, a gap is reserved between the ball and the outer surface of the inner tube, the pressure device moves downwards, the inclined surface of the pressing block contacts with the ball and the ball moves inwards in the radial direction, and after the ball contacts with the inner tube, the downward pressing force of the pressing block generates an increased horizontal component force through the inclined surface to press the inner tube.
2. The pushing mechanism of the sealing cover of the oil filling riser closed loading machine according to claim 1, wherein the pushing mechanism further comprises a telescopic device, and the telescopic device is connected with the fastening device and is located between the fastening device and the sealing cover.
3. The pushing mechanism of a sealing cover for sealing a loading arm according to claim 2, wherein the telescopic device adopts a pressure spring assembly.
4. The pushing mechanism of a sealing cover for sealing a truck for oil filling riser according to claim 1, wherein the driving device is fixed on the outer tube.
5. The pushing mechanism of the sealing cover for the sealed loading of the crane pipe according to claim 1, wherein the pressure device further comprises a pressing plate and a pressing block sleeve, the pressing block is arranged in the pressing block sleeve, the pressing block sleeve is fixed on the pressing plate, and the pressing plate is connected with the driving device.
6. The pushing mechanism of the sealing cover for sealing the truck loading arm as set forth in claim 1, wherein a plurality of said fastening devices are uniformly distributed along the circumference of the inner tube.
7. The pushing mechanism of the sealing cover for the sealed loading of the crane tube according to claim 1, wherein the fastening device is of an annular structure and sleeved outside the inner tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910687063.1A CN110240110B (en) | 2019-07-29 | 2019-07-29 | Pressing mechanism of sealing cover for sealing loading crane pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910687063.1A CN110240110B (en) | 2019-07-29 | 2019-07-29 | Pressing mechanism of sealing cover for sealing loading crane pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110240110A CN110240110A (en) | 2019-09-17 |
| CN110240110B true CN110240110B (en) | 2023-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910687063.1A Active CN110240110B (en) | 2019-07-29 | 2019-07-29 | Pressing mechanism of sealing cover for sealing loading crane pipe |
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Families Citing this family (1)
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| TWI730876B (en) * | 2020-08-19 | 2021-06-11 | 青輔實業股份有限公司 | Bedside table |
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| CN110240110A (en) | 2019-09-17 |
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