CN103244827B - Piston type natural gas line batch charger - Google Patents
Piston type natural gas line batch charger Download PDFInfo
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- CN103244827B CN103244827B CN201210211585.2A CN201210211585A CN103244827B CN 103244827 B CN103244827 B CN 103244827B CN 201210211585 A CN201210211585 A CN 201210211585A CN 103244827 B CN103244827 B CN 103244827B
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 220
- 239000003345 natural gas Substances 0.000 title claims abstract description 111
- 238000007789 sealing Methods 0.000 claims abstract description 42
- 239000000463 material Substances 0.000 claims description 59
- 230000007246 mechanism Effects 0.000 claims description 48
- 238000001179 sorption measurement Methods 0.000 claims description 15
- 230000005484 gravity Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 37
- 230000008569 process Effects 0.000 abstract description 33
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 abstract description 4
- 235000021050 feed intake Nutrition 0.000 abstract 1
- 239000011435 rock Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 11
- 239000007788 liquid Substances 0.000 description 8
- 239000003463 adsorbent Substances 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000002829 reductive effect Effects 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 4
- 238000006297 dehydration reaction Methods 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012840 feeding operation Methods 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Reciprocating Pumps (AREA)
Abstract
The present invention relates to a kind of piston type natural gas line batch charger, comprising: feed intake container, it is connected with the second piston/cylinder with natural gas line, first piston cylinder body respectively; Described first piston cylinder body is connected with feed pipe; Two of container and internal diameter is identical are fed intake described in described first piston cylinder body is coaxially arranged at described second piston/cylinder, be respectively arranged with the synchronization-moving first piston of energy and the second piston in described first piston cylinder body and described second piston/cylinder, and described second piston can move in described first piston cylinder body; Described first piston, the second piston are respectively and form between described first piston cylinder body and the second piston/cylinder and be tightly connected, to form the sealing between piston/cylinder and natural gas line.Structure of the present invention ensure that the rock gas in the process of feeding intake and fill process in natural gas line all can not leak in air, ensure that safety in production, avoids the pollution to environment.
Description
Technical Field
The invention relates to a material feeding device, in particular to a piston type natural gas pipeline feeding machine for feeding materials into a natural gas conveying pipeline.
Background
Liquid phase water may be present in the produced natural gas. Due to the existence of liquid phase water, hydrate can be formed under certain conditions, so that pipelines and equipment are blocked, and the normal operation of gathering and transportation generation is influenced. For containing H2Natural gas of acid gases such as S reacts with liquid-phase water to generate acidity, which causes corrosion of equipment and pipelines.
In order to remove liquid phase water in natural gas, a solvent absorption dehydration method and a solid absorption dehydration method are commonly adopted at present. The solvent absorption dehydration method usually adopts glycol aqueous solution to extract water vapor in the natural gas to form glycol dilute solution, so that the content of the water vapor in the natural gas is greatly reduced. The solid adsorption dehydration method is to put a rod-shaped solid adsorption material into a natural gas pipeline to adsorb moisture in natural gas.
At present, the process of putting the liquid adsorption material or the solid adsorption material into the natural gas pipeline is a complex process. The reason is that the pressure in the natural gas pipeline is higher than the atmospheric pressure outside the pipeline, and a small amount of natural gas in the natural gas pipeline needs to be discharged out of the natural gas pipeline when the adsorbing material is put in. Since the adsorption material is frequently added, the emission of a large amount of natural gas itself has an adverse effect on the environmental safety.
In view of the defects of the prior art, the inventor develops the piston type natural gas pipeline feeding machine according to the invention based on production design experience of the field and the related field for years, so that natural gas emission is not generated when the adsorption material is fed.
Disclosure of Invention
The invention aims to provide a piston type natural gas pipeline feeding machine which is used for feeding a liquid adsorption material and a solid adsorption material into a natural gas conveying pipeline so as to solve the problem of natural gas emission caused in the feeding process of the existing natural gas adsorption material.
Therefore, the invention provides a piston type natural gas pipeline feeding machine, which comprises: the feeding container is communicated with the natural gas pipeline, the first piston cylinder and the second piston cylinder respectively; the first piston cylinder body is communicated with a feeding pipeline; the first piston cylinder and the second piston cylinder are coaxially arranged on two sides of the feeding container and have the same inner diameter, a first piston and a second piston which can move synchronously are respectively arranged in the first piston cylinder and the second piston cylinder, and the second piston can move into the first piston cylinder; and the first piston and the second piston are respectively in sealing connection with the first piston cylinder body and the second piston cylinder body to form sealing between the piston cylinder bodies and the natural gas pipeline.
The piston type natural gas pipeline batch feeder is characterized in that at least one of the first piston and the second piston is connected with a driving mechanism, after the batch feeding is completed, the driving mechanism drives the corresponding ends of the first piston and the second piston to move to the lower part of the feed pipeline in a manner of abutting against each other, so that the first piston is positioned on one side of the feed pipeline, and the second piston is positioned on the other side of the feed pipeline; and the adsorbing material falls into the first piston cylinder body and is positioned between the first piston and the second piston, and then the first piston and the second piston are driven to drive the material to move to the feeding container, so that the material is fed into the natural gas pipeline.
The piston type natural gas pipeline feeder comprises: and a first sealing body and a second sealing body are respectively arranged in the first piston cylinder body and the second piston cylinder body, and the first sealing body is arranged in the first piston cylinder body between the feeding container and the feeding pipeline.
The piston type natural gas pipeline feeding machine is characterized in that a third sealing body is further arranged in the first piston cylinder body, and the third sealing body is arranged in the first piston cylinder body on one side of the feeding pipeline far away from the feeding container.
The piston type natural gas pipeline feeding machine is characterized in that the second piston is connected with the driving mechanism, and a one-way linkage mechanism is arranged between the first piston and the second piston.
The piston type natural gas pipeline feeding machine as described above, wherein the one-way linkage mechanism includes: and one end of the pull rod is fixedly connected with the second piston, and the other end of the pull rod is a movable connecting end which is connected with the first piston in a relatively movable manner.
The piston type natural gas pipeline feeding machine is characterized in that the first piston and the second piston are respectively provided with a first pull rod bracket and a second pull rod bracket which protrude out of the first piston cylinder and the second piston cylinder; one end of the pull rod is fixedly connected with the second pull rod support, and the other end of the pull rod is sleeved on the first pull rod support; the first piston cylinder body and the second piston cylinder body are respectively provided with a long sliding groove which can enable the first pull rod bracket and the second pull rod bracket to move in the long sliding grooves; the movable connecting end of the pull rod is provided with a pulling piece.
The piston type natural gas pipeline feeding machine is characterized in that the first piston and the second piston are respectively connected with a first piston positioning column and a second piston positioning column, the first piston positioning column and the second piston positioning column are respectively movably arranged in a first piston positioning column cylinder body and a second piston positioning column cylinder body, and the first piston positioning column cylinder body and the second piston positioning column cylinder body are respectively communicated with the first piston cylinder body and the second piston cylinder body and are coaxially arranged.
The piston type natural gas pipeline feeding machine is characterized in that the first piston positioning column and the second piston positioning column are respectively provided with a first pull rod support and a second pull rod support which protrude out of the first piston positioning column cylinder body and the second piston positioning column cylinder body; one end of the pull rod is pivoted with the second pull rod bracket, and the other end of the pull rod is sleeved on the first pull rod bracket; the first piston positioning column cylinder body and the second piston positioning column cylinder body are respectively provided with a long sliding groove which can enable the first pull rod support and the second pull rod support to move in the long sliding grooves; the movable connecting end of the pull rod is provided with a pulling piece.
The piston type natural gas pipeline feeding machine is characterized in that the distance between the pulling piece and the fixed end of the pull rod and the fixed end of the second pull rod support is greater than the minimum distance between the first pull rod support and the second pull rod support, and the minimum distance between the first pull rod support and the second pull rod support is the distance when two corresponding ends of the first piston and the second piston abut against each other.
The piston type natural gas pipeline feeding machine is characterized in that at least one pair of piston positioning columns are arranged on the cylinder body of the piston positioning column.
The piston type natural gas pipeline feeding machine is characterized in that the inner cavity of the feeding container is a water drop-shaped cavity, the narrow end of the cavity is located below the wide end of the cavity in the gravity direction, and the narrow end of the cavity is communicated with the natural gas pipeline.
The piston type natural gas pipeline feeding machine is characterized in that the two corresponding ends of the first piston and the second piston are provided with chamfers.
The piston-type natural gas pipeline feeding machine as described above, wherein the first piston is connected to a braking mechanism.
The piston type natural gas pipeline feeding machine is characterized in that the braking mechanism is a magnetic brake.
Compared with the prior art, the invention has the characteristics and advantages that:
the piston type natural gas pipeline feeder is provided with two pistons, and the adsorbing material is placed between the two pistons at the position of the feeding pipe and can be thrown into a natural gas pipeline along with the movement of the two pistons. The second piston can move in the first piston cylinder body, namely the second piston can push the first piston, so that when the second piston and the first piston move together to the outside of the natural gas pipeline (namely the feeding pipeline), no gap is reserved between the second piston and the first piston, and the piston cylinder body is provided with a sealing body, so that the natural gas cannot leak, the defects in the prior art are overcome, and the purpose of the invention is realized.
The linkage mechanism is arranged between the first piston and the second piston, one of the pistons is driven, and the other piston is pulled or pushed by the linkage mechanism, so that the two pistons synchronously move. Due to the existence of the linkage mechanism, only one driving motor is arranged to drive the two pistons, so that the cost is reduced, and the control program is simplified.
In addition, due to the arrangement of the third sealing body, the first sealing body and the second sealing body, natural gas leakage is avoided, only the piston needs to bear large pressure, other movable parts do not need to bear large pressure, and manufacturing cost is reduced.
The first piston is connected with a braking mechanism, so that the accuracy of the movement position of the first piston in the material taking and feeding processes is ensured, and the first piston and the second piston can synchronously stop after the driving motor stops moving.
According to the invention, the adsorption material can be automatically put in by setting a simple automatic control program, and the adsorption material is loaded under normal pressure, so that the labor cost is saved.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein,
fig. 1 is a schematic structural diagram of a piston type natural gas pipeline batch feeder of the invention.
Fig. 2 is a state diagram of the material taking process of the piston type natural gas pipeline feeding machine.
Fig. 3 is another state diagram of the material taking process of the piston type natural gas pipeline feeding machine.
Fig. 4 is a first state diagram of the feeding process of the piston type natural gas pipeline feeder of the invention.
Fig. 5 is a second state diagram of the feeding process of the piston type natural gas pipeline feeder.
Fig. 6 is a schematic structural diagram of the magnetic brake of the piston type natural gas pipeline feeder of the invention.
The reference numbers illustrate:
1. magnetic brake 2, first piston positioning column cylinder 3, pulling nut
4. First pull rod support 5, feed pipe 6, pull rod
7. Feeding container 8, second piston cylinder 9 and second piston
10. Second piston positioning column cylinder body 11, second pull rod support 12 and lead screw
13. First piston brake lever 14, first piston positioning column 15 and rotation-stopping sliding key
16. Third seal body 17, first piston cylinder 18, first piston
19. First sealing body 20, chamfer 21, second sealing body
22. Second piston positioning column 23, rotation-stopping sliding key 24 and material rod
25. Electromagnet 26, brake spring 27, brake pad
28. Magnetic driving piece
Detailed Description
The invention provides a piston type natural gas pipeline feeder, which comprises: the feeding container is communicated with the natural gas pipeline, the first piston cylinder and the second piston cylinder respectively; the first piston cylinder body is communicated with a feeding pipeline; the first piston cylinder and the second piston cylinder are coaxially arranged on two sides of the feeding container and have the same inner diameter, a first piston and a second piston which can move synchronously are respectively arranged in the first piston cylinder and the second piston cylinder, and the second piston can move into the first piston cylinder; and the first piston and the second piston are respectively in sealing connection with the first piston cylinder body and the second piston cylinder body to form sealing between the piston cylinder bodies and the natural gas pipeline.
Further, at least one of the first piston and the second piston is connected with a driving mechanism, after the feeding is finished, the driving mechanism drives the corresponding ends of the first piston and the second piston to move to the lower part of the feeding pipe in a mutual abutting mode, the first piston is located on one side of the feeding pipe, and the second piston is located on the other side of the feeding pipe; after the material enters the space between the first piston and the second piston, the first piston and the second piston are driven to clamp the material and move to the feeding container, and the material is fed into the natural gas pipeline.
According to the piston type natural gas pipeline feeding machine, the first piston cylinder body and the first piston are hermetically connected with each other, the second piston cylinder body and the second piston are hermetically connected with the feeding container, so that natural gas in a natural gas pipeline cannot enter the piston cylinder body and leak into a feeding pipeline in the feeding process, and after the feeding operation is completed, two corresponding ends of the first piston and the second piston abut against each other and move to the lower part of the feeding pipeline, so that the natural gas cannot be brought into the first piston cylinder body and the feeding pipeline, the natural gas in the pipeline cannot leak into the atmosphere when an adsorbing material is fed, the safe production is ensured, and the pollution to the environment is avoided.
In one possible solution, the second piston is connected to the driving mechanism, and a one-way linkage mechanism is arranged between the first piston and the second piston. The one-way linkage mechanism only plays a role in the feeding process, namely, the first piston and the second piston can move together under the driving of the driving mechanism.
Wherein, one-way link gear includes: and one end of the pull rod is pivoted with the second piston, and the other end of the pull rod is a movable connecting end which is connected with the first piston in a relatively movable manner.
Furthermore, the first piston is connected to a braking mechanism, which may be a magnetic brake.
In order to make the technical features, objects and effects of the present invention more clearly understood, the following detailed description of the embodiments, structures, features and effects of the piston type natural gas pipeline feeding machine according to the present invention is made with reference to the accompanying drawings and preferred embodiments. Furthermore, while the present invention has been described in connection with the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications, alternative constructions, and arrangements included within the scope of the appended claims.
FIG. 1 is a schematic structural diagram of a piston type natural gas pipeline batch feeder of the invention; FIG. 2 is a state diagram of the material taking process of the piston type natural gas pipeline feeding machine of the invention; FIG. 3 is another state diagram of the material taking process of the piston type natural gas pipeline feeding machine of the invention; FIG. 4 is a first state diagram of the feeding process of the piston type natural gas pipeline feeder of the invention; fig. 5 is a second state diagram of the feeding process of the piston type natural gas pipeline feeder.
Referring to fig. 1, there is shown an embodiment of the piston type natural gas pipeline feeder of the present invention, illustrating the main structure of the piston type natural gas pipeline feeder. The piston type natural gas pipeline feeder is mainly used for feeding materials capable of adsorbing moisture to a natural gas pipeline. This piston natural gas line feeder mainly includes: the feeding container 7, the first piston cylinder 17 and the second piston cylinder 8, the first piston 18 disposed in the first piston cylinder 17, and the second piston 9 disposed in the second piston cylinder 8. Wherein, a main pipeline for conveying natural gas, a first piston cylinder body 17 and a second piston cylinder body 8 are respectively communicated with the feeding container 7; the first piston cylinder 17 is communicated with the feeding pipeline 5; the first piston cylinder 17 and the second piston cylinder 8 are coaxially arranged on two sides of the feeding container 7, and have the same inner diameter, that is, the first piston cylinder 17, the feeding container 7 and the second piston cylinder 8 are sequentially arranged on the same axis, and the second piston 9 can move into the first piston cylinder 17, that is, the second piston 9 passes through the feeding container 7 during the reciprocating motion in the first piston cylinder 17 and the second piston cylinder 8. The first piston 18 and the second piston 9 are respectively connected with the first piston cylinder 17 and the second piston cylinder 8 in a sealing manner to form a seal between the piston cylinders and the natural gas pipeline.
Further, the second piston 9 is connected to a driving mechanism, in this embodiment, the second piston 9 is connected to a driving mechanism. After the feeding is finished, under the driving of the driving mechanism, the second piston 9 is moved to abut against the first piston 18, that is, corresponding ends of the first piston 18 and the second piston 9 abut against each other, and the second piston 9 is further driven to simultaneously drive the first piston 18 to move to the lower part of the feeding pipe 5 together, and the first piston 18 is located at one side of the feeding pipe 5, and the second piston 9 is located at the other side of the feeding pipe 5; after the adsorbing material falls into the piston cylinder 17 through the feeding pipeline 5 and is located between the first piston and the second piston, the first piston 18 and the second piston 9 drive the adsorbing material 24 to move to the feeding container 7 under the driving of the driving mechanism, and the adsorbing material is fed into the natural gas pipeline. The adsorbent 24 may be a solid adsorbent rod or a liquid adsorbent rod.
In a particular embodiment, the inner wall of the first piston cylinder 17 is provided with an annular first sealing body 19, in particular the first sealing body 19, in the portion of the first piston cylinder 17 located between the feed conduit 5 and the dosage vessel 7, i.e. as shown in fig. 1, the inner wall of the first piston cylinder 17 on the right side of the feed conduit 5 is provided with the first sealing body 19, so that the first sealing body 19 prevents natural gas from leaking into the feed conduit 5 due to the difference in gas pressure between the inside and the outside of the dosage vessel 7. Similarly, an annular second sealing body 21 is provided on the inner wall of the second piston cylinder 8, and the second sealing body 21 can also prevent natural gas leakage due to a difference in gas pressure between the inside and the outside of the charging container 7. A third sealing body 16 is further arranged in the first piston cylinder 17, and the third sealing body 16 is arranged in the first piston cylinder on the side of the feeding pipe 5 far away from the feeding container 7. As can be seen from fig. 1, an annular third sealing body 16 is arranged on the inner wall of the first piston cylinder 17 on the left side of the feed line 5 (the side facing away from the feed container 7). The third sealing body 16 functions to: when the feed pipe 5 is filled with liquid adsorbent, the third sealing body 16 can play a sealing role to prevent the liquid adsorbent from leaking to the outside of the batch feeder.
One possible example is that the drive mechanism employs a motor, a lead screw drive mechanism. In order to enable the first piston 18 to move together with the second piston 9, the first piston 18 may be connected to a further threaded spindle, and the first piston 18 and the second piston 9 may be driven synchronously by a drive motor. In order to make the driving mechanism simple and reliable in movement, a specific embodiment is given below in which the driving motor drives a lead screw, and the first and second pistons are driven to move together by a linkage mechanism.
As shown in fig. 1, one end of the screw 12 is connected to the second piston 9, and the other end of the screw is connected to a rotating shaft of the driving motor, and under the driving of the driving motor, the screw 12 rotates, so as to drive the second piston 9 to move left and right along the screw 12, that is, the rotation of the driving motor is converted into the linear motion of the second piston 9. Of course, the driving mechanism is not limited to the motor and the screw driving mechanism, and other known mechanisms may be used as long as the second piston 9 is driven to perform linear motion. Such as pneumatic, hydraulic drive mechanisms, etc., may also be employed.
A one-way linkage mechanism is arranged between the first piston 18 and the second piston 9, and the one-way linkage mechanism only plays a role in the feeding process, namely, the first piston 18 and the second piston 9 can move together under the driving of a driving mechanism (a lead screw 12). The one-way linkage mechanism comprises: and one end of the pull rod 6 is fixedly connected with the second piston 9, and the other end of the pull rod 6 is a movable connecting end which is connected with the first piston 18 in a relatively movable manner. The number of the pull rods 6 is not limited, and the plurality of pull rods can improve the motion stability.
In a possible technical solution, the first piston 18 and the second piston 9 may be respectively provided with a first pull rod support 4 and a second pull rod support 11 protruding out of the first piston cylinder 17 and the second piston cylinder 8. One end of the pull rod 6 is pivoted with the second pull rod support 11, and the other end of the pull rod is sleeved on the first pull rod support 4 and is connected with the first pull rod support 4 in a sliding manner. In particular, the tie rod 6 is pivotally connected to the second tie rod bracket 11. The first piston cylinder 17 and the second piston cylinder 8 are respectively provided with a long sliding groove which can enable the first pull rod bracket 4 and the second pull rod bracket 11 to move in the long sliding grooves; and a pulling piece is arranged on the movable connecting end of the pull rod 6. The pulling part is arranged on the outer side of the first pull rod support 4, namely, on the side far away from the feeding pipeline 5, and the first pull rod support 4 can be pulled through the pulling part to realize the one-way linkage of the first pull rod support 4 and the second pull rod support 11, namely, the one-way linkage between the first piston 18 and the second piston 9.
The pulling element may be a pulling nut 3 screwed onto the pull rod 6.
Further, in order to improve the motion stability of the first and second pistons and the connection strength with the driving mechanism, a first piston positioning column 14 and a second piston positioning column 22 may be respectively connected to the rear portions of the first piston 18 and the second piston 9, the first piston positioning column 14 and the second piston positioning column 22 are respectively movably disposed in the first piston positioning column cylinder 2 and the second piston positioning column cylinder 10, and the first piston positioning column cylinder 2 and the second piston positioning column cylinder 10 are respectively communicated with the first piston cylinder 17 and the second piston cylinder 8 and are coaxially disposed. In the particular embodiment shown in fig. 1, the outside diameters of first and second piston positioning columns 14 and 22 are larger than the diameters of first and second pistons 18 and 9.
In one embodiment, as shown in fig. 1, the pull rod 6 is hinged to the second pull rod support 11 and slidably connected to the first pull rod support 4. I.e. the tie rod 6 can slide on the first tie rod holder 4. The pull nut 3 as a pull member can pull the first pull rod bracket 4 after the pull rod 6 slides to a proper position. The pull rod 6 is provided with a thread matched with the pulling nut 3, so that the position of the pulling nut 3 can be adjusted.
As can be seen from fig. 1, the first tie rod holder 4 is arranged on the first piston positioning post 14. The left end of the first piston 18 is connected with the first piston positioning column 14 to form a whole, and the first pull rod support 4 is connected with the first piston 18 through the first piston positioning column 14. Similarly, the right end of the second piston 9 is connected with a second piston positioning column 22 to form a whole, and the second pull rod support 11 is connected with the second piston 9 through the second piston positioning column 22. First piston positioning post 14 reciprocates with first piston 18 within first piston positioning post cylinder 2. A first pull rod support sliding slot is formed in the wall of the first piston positioning column cylinder body 2, and the first pull rod support sliding slot is suitable for enabling the first pull rod support 4 to penetrate through the wall of the first piston positioning column cylinder body 2 and to reciprocate. A second pull rod support sliding slot is formed in the wall of the second piston positioning column cylinder 10, and the second pull rod support sliding slot is suitable for the second pull rod support 10 to penetrate through the wall of the second piston positioning column cylinder 10 and to reciprocate. Similarly, second piston positioning post 22 reciprocates with second piston 9 within second piston positioning post cylinder 10.
In a specific technical scheme, in order to prevent the first piston positioning column 14 from rotating around the axis in the reciprocating process, a rotation and sliding stop key 15 is arranged between the first piston positioning column 14 and the first piston positioning column cylinder body 2. Similarly, in order to prevent rotation of second piston positioning post 22 about the axis during the reciprocating motion, a rotation/slip stop key 23 may be provided between second piston positioning post 22 and second piston positioning post cylinder 10.
As shown in fig. 1, both end portions of the first piston 18 corresponding to the second piston 9 are provided with chamfers 20. When the first piston 18 and the second piston 9 do linear motion, the probability of damaging the first sealing body, the second sealing body or the third sealing body can be reduced due to the existence of the chamfer, the sealing performance is improved, and the service life of the batch feeder is prolonged.
In a preferable scheme, the inner cavity of the feeding container 7 is a drop-shaped cavity, the narrow end of the drop-shaped cavity is located below the wide end of the cavity in the gravity direction (the gravity direction in the direction shown in fig. 1 is from top to bottom), and the narrow end of the cavity is communicated with a natural gas pipeline. The two sides of the feeding container 7 are respectively communicated with the first piston cylinder 17 and the second piston cylinder 8. The cavity shape ensures that the pressure of the wall of the feeding container 7 is reasonably distributed by the natural gas, reduces the requirement on the strength of the wall of the feeding container 7 and provides convenience for processing and selecting materials for the feeding container 7.
The operation of the piston type natural gas line feeder of the present invention will be described below in order to further explain the principle of the piston type natural gas line feeder.
The working principle of the piston type natural gas pipeline feeding machine is explained by combining fig. 1 to fig. 5. The operation of the batch feeder comprises a material taking process and a material feeding process. Figure 1 shows the piston natural gas pipeline batch feeder in a standby state. The material taking process refers to fig. 2 and 3, and the material feeding process refers to fig. 4 and 5.
When the material taking process is started from the standby state, the driving motor drives the screw rod 12 to rotate and drives the second piston 9 to start to perform linear motion (from right to left in fig. 1) towards the first piston 18, and the pull rod 6 moves towards the first piston 18 together under the driving of the second piston 9, and the movable end of the pull rod 6 is sleeved in the first pull rod bracket 4 and is movably connected with the first piston 18, so that the first piston 18 is in a static state at the moment. When the second piston 9 touches the first piston 18, the second piston 9 is driven to move leftwards continuously, and simultaneously the first piston 18 is pushed to move synchronously with the first piston, until the first piston 18 is pushed to the outside of the pipe wall of the feeding pipe 5, namely the state shown in fig. 2, the driving is stopped. Then, the driving motor starts to run reversely, which drives the screw 12 to rotate reversely, so that the second piston 9 starts to move reversely, and moves to the right side in the figure until the pipe wall of the feeding pipe 5 (the pipe wall of the feeding pipe on the opposite side of the first piston 18) is outside, as shown in fig. 3, and the driving motor stops working. During this process, the first piston 18 remains stationary, so that a space is formed between the first piston 18 and the second piston 9. From the feed conduit 5, the sorption material (slug) 24 enters the space formed between the first piston 18 and the second piston 9. In order to ensure that the first piston 8 is kept still during the movement of the second piston 9 in the direction away from the first piston 18, a feeding space can be formed between the first piston 18 and the second piston 9, the distance S2 between the pulling member (pulling nut 3) and the fixed ends of the pull rod and the second pull rod bracket 11 is greater than the minimum distance S1 between the first pull rod bracket 4 and the second pull rod bracket 11, the minimum distance between the first pull rod bracket 4 and the second pull rod bracket 11 is the distance when the two corresponding ends of the first piston 18 and the second piston 9 abut against each other, and the difference between the distance S2 and the distance S1 is greater than or equal to the diameter of the feeding pipe 5. Depending on the diameter of the feed conduit 5 connected to the first piston cylinder 17, the position of the pulling member (adjustment of the pulling nut 3) and thus the size of the above-mentioned feed space formed between the first piston 18 and the second piston 9 can be adjusted to accommodate the dosing of different lengths or different amounts of adsorbent material (rods) 24. That is, when the above-described feeding space is formed between the first piston 18 and the second piston 9, the draw nut 3 has abutted against or approached the first draw bar holder 4.
And then, in the feeding process, the driving motor is started to rotate continuously in the reverse direction, the screw 12 drives the second piston 9 to move in the reverse direction, namely, the second piston moves in the right direction shown in the figure, the first piston 18 is driven by the pull rod 6 to move synchronously, the first piston 18 and the second piston 9 clamp the adsorbing material (material rod) 24 to move rightwards until the position shown in the figure 4 is reached, the adsorbing material (material rod) 24 enters the feeding container 7, and under the action of gravity, the adsorbing material 24 is separated from the first piston 18 and the second piston 9 and enters the natural gas pipeline from the narrow end of the feeding container 7. After the adsorbent 24 is charged, the first piston 18 and the second piston 9 reach the state shown in fig. 5, i.e., the standby state shown in fig. 1, and wait for the next charge. And finishing the feeding process.
In the material taking process, the two corresponding ends of the second piston 9 and the first piston 18 are mutually abutted and tightly moved to the feeding pipeline 5, and no gap exists between the second piston 9 and the first piston 18, so that natural gas cannot be carried into the feeding pipeline 5, the problem of natural gas leakage in the material taking process is solved, and the purpose of the invention is realized. The invention is described above by taking a solid adsorbing material as an example, and the invention is also applicable to the feeding of a liquid adsorbing material, in the process, the feeding pipeline 5 only needs to inject the liquid adsorbing material, and the liquid adsorbing material does not leak due to the arrangement of the third sealing body 16.
In the material taking process and the material feeding process, the second piston 9 is driven to move only by the screw rod 12, and the first piston 18 can be pulled in a single direction through the one-way linkage mechanism between the first piston 18 and the second piston 9 so as to be linked with the second piston. The movement of the first piston 18 to the left in the figure, the movement of the first piston 18 to the left being achieved by the second piston 9 pushing against the first piston 18; the second piston 9 unidirectionally pulls the first piston 18 through the unidirectional linkage mechanism, and the first piston 18 is moved rightward in the drawing. Due to the existence of the one-way linkage mechanism, only one driving motor is arranged to drive the first piston 18 and the second piston 9, so that the cost is reduced, and the control program is simplified. As can be seen from the attached drawings, two sets of one-way linkage mechanisms are arranged, so that the stress is more uniform. Due to the arrangement of the third sealing body 16, the first sealing body 19 and the second sealing body 21, on one hand, natural gas leakage is avoided, on the other hand, only the piston needs to bear large pressure, and other movable parts do not need to bear large pressure, so that the manufacturing cost is reduced.
Another preferable technical solution is that the first piston 18 is connected to a braking mechanism to ensure that the first piston 18 moves accurately in the material taking and feeding processes, and after the driving motor stops moving, the first piston 18 can stop synchronously. The specific type and structure of the braking mechanism are not limited as long as the first piston 18 and the second piston 9 can be stopped synchronously, and the following description is given by way of example only.
In one embodiment, as shown in fig. 1 to 6, a first piston brake lever 13 is disposed on the left side of the first piston positioning column 14, and a set of magnetic brakes 1 acts on the first piston brake lever 13 to brake the first piston 18. The magnetic brake 1 is preferably an electromagnetic brake.
Fig. 6 shows a specific structure of the electromagnetic brake, which includes: an electromagnet 25, a brake spring 26, a pair of brake shoes 27 and a magnetic drive 28. The electromagnet 25, when energized, pulls the magnetic drive member 28, which through a series of linkages causes the pair of brake shoes 27 to clamp the first piston brake lever 13 and thereby brake the first piston 18. The braking spring 26 is connected at one end to the magnetic actuator 28 and at the other end to the base on which the electromagnet 25 is located. When the electromagnet 25 is de-energized, the spring force of the brake spring 26 is caused to pull the magnetic actuator 28, so that the brake shoes 27 still hold the first piston brake lever 13. Since the spring force of the brake spring 26 is smaller than the tensile force of the electromagnet 25, the brake shoe 27 cannot stop the movement of the first piston brake lever 13, but only delays the movement of the first piston brake lever 13 by increasing the frictional resistance. The presence of such frictional resistance prevents the generation of an undesirable gap between the first piston 18 and the second piston 9. This is particularly important during the taking of the material, and the frictional resistance is such that the second piston 9 always keeps pushing against the first piston 18, so that no play arises between the first piston 18 and the second piston 9, and the natural gas in the feed container 7 is not carried along to the feed line 5. By using different types of brake springs 26, the friction between the brake block 27 and the first piston brake lever 13 can be adjusted, but the friction is much smaller than the pulling force of the pulling nut 3 on the first piston 18 during the feeding process, so as to ensure that the first piston 18 can move rightwards synchronously with the second piston 9 to perform the feeding operation.
According to the technical scheme, the adsorption material can be automatically put in by setting a simple automatic control program, and the adsorption material is loaded under normal pressure, so that the labor cost is saved.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention. It should be noted that the components of the present invention are not limited to the above-mentioned whole application, and various technical features described in the present specification can be selected to be used alone or in combination according to actual needs, so that the present invention naturally covers other combinations and specific applications related to the invention.
Claims (13)
1. A piston natural gas line feeder, characterized in that, piston natural gas line feeder includes: the feeding container is communicated with the natural gas pipeline, the first piston cylinder and the second piston cylinder respectively; the first piston cylinder body is communicated with a feeding pipeline; the first piston cylinder and the second piston cylinder are coaxially arranged on two sides of the feeding container and have the same inner diameter, a first piston and a second piston which can move synchronously are respectively arranged in the first piston cylinder and the second piston cylinder, and the second piston can move into the first piston cylinder; the first piston and the second piston are respectively in sealing connection with the first piston cylinder and the second piston cylinder to form sealing between the piston cylinders and the natural gas pipeline;
at least one of the first piston and the second piston is connected with a driving mechanism, after the feeding is finished, the driving mechanism drives the corresponding ends of the first piston and the second piston to move to the lower part of the feeding pipeline in a mutually propping manner, so that the first piston is positioned on one side of the feeding pipeline, and the second piston is positioned on the other side of the feeding pipeline; the adsorption material falls into the first piston cylinder body and is positioned between the first piston and the second piston, and then the first piston and the second piston are driven to drive the material to move to the feeding container, and the material is fed into a natural gas pipeline;
and a first sealing body and a second sealing body are respectively arranged in the first piston cylinder body and the second piston cylinder body, and the first sealing body is arranged in the first piston cylinder body between the feeding container and the feeding pipeline.
2. The piston-type natural gas pipeline feeder according to claim 1, wherein a third seal is provided in the first piston cylinder, and the third seal is provided in the first piston cylinder on a side of the feeder pipe remote from the feeding container.
3. The piston-type natural gas pipeline batch feeder of claim 1, wherein the second piston is connected with the driving mechanism, and a one-way linkage mechanism is arranged between the first piston and the second piston.
4. The piston-type natural gas pipeline batch feeder of claim 3, characterized in that the one-way linkage mechanism comprises: and one end of the pull rod is fixedly connected with the second piston, and the other end of the pull rod is a movable connecting end which is connected with the first piston in a relatively movable manner.
5. The piston-type natural gas pipeline feeder according to claim 4, wherein the first piston and the second piston are respectively provided with a first pull rod bracket and a second pull rod bracket which protrude out of the first piston cylinder and the second piston cylinder; one end of the pull rod is pivoted with the second pull rod bracket, and the other end of the pull rod is sleeved on the first pull rod bracket; the first piston cylinder body and the second piston cylinder body are respectively provided with a long sliding groove which can enable the first pull rod bracket and the second pull rod bracket to move in the long sliding grooves; the movable connecting end of the pull rod is provided with a pulling piece.
6. The piston-type natural gas pipeline batch feeder of claim 4, wherein the first piston and the second piston are respectively connected with a first piston positioning column and a second piston positioning column, the first piston positioning column and the second piston positioning column are respectively movably arranged in a first piston positioning column cylinder body and a second piston positioning column cylinder body, and the first piston positioning column cylinder body and the second piston positioning column cylinder body are respectively communicated with the first piston cylinder body and the second piston cylinder body and are coaxially arranged.
7. The piston-type natural gas pipeline batch feeder of claim 6, wherein the first piston positioning column and the second piston positioning column are respectively provided with a first pull rod bracket and a second pull rod bracket which protrude out of the first piston positioning column cylinder body and the second piston positioning column cylinder body; one end of the pull rod is fixedly connected with the second pull rod support, and the other end of the pull rod is sleeved on the first pull rod support; the first piston positioning column cylinder body and the second piston positioning column cylinder body are respectively provided with a long sliding groove which can enable the first pull rod support and the second pull rod support to move in the long sliding grooves; the movable connecting end of the pull rod is provided with a pulling piece.
8. The piston-type natural gas pipeline batch feeder of claim 7, wherein the distance between the pulling piece and the fixed end of the pull rod and the second pull rod bracket is greater than the minimum distance between the first pull rod bracket and the second pull rod bracket, and the minimum distance between the first pull rod bracket and the second pull rod bracket is the distance when the two corresponding ends of the first piston and the second piston abut against each other.
9. The piston-type natural gas pipeline batch feeder of claim 6, wherein a rotation-stop sliding key is arranged between at least one pair of the piston positioning columns and the cylinder body of the piston positioning column.
10. The piston-type natural gas pipeline batch feeder of claim 1, wherein the inner cavity of the batch container is a drop-shaped cavity, the narrow end of the cavity is positioned below the wide end of the cavity in the gravity direction, and the narrow end of the cavity is communicated with the natural gas pipeline.
11. The piston-type natural gas pipeline batch feeder of claim 1, wherein the corresponding ends of the first piston and the second piston are provided with chamfers.
12. A piston-type natural gas pipeline batch feeder according to any one of claims 3 to 11, characterized in that the first piston is connected to a braking mechanism.
13. The piston-type natural gas pipeline batch feeder of claim 12, wherein the brake mechanism is a magnetic brake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210211585.2A CN103244827B (en) | 2012-06-21 | 2012-06-21 | Piston type natural gas line batch charger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210211585.2A CN103244827B (en) | 2012-06-21 | 2012-06-21 | Piston type natural gas line batch charger |
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| Publication Number | Publication Date |
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| CN103244827A CN103244827A (en) | 2013-08-14 |
| CN103244827B true CN103244827B (en) | 2015-09-09 |
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| CN201210211585.2A Active CN103244827B (en) | 2012-06-21 | 2012-06-21 | Piston type natural gas line batch charger |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2304803Y (en) * | 1997-05-09 | 1999-01-20 | 四川石油管理局输气公司 | Corrosion inhibitor atomizing and filling apparatus for long distance gas pipelines |
| CA2591378A1 (en) * | 2006-06-12 | 2007-12-12 | Nils Kohlhase | Gas-operated diaphragm dosing pump |
| CN102226501A (en) * | 2011-06-21 | 2011-10-26 | 成都孚吉科技有限责任公司 | Solid antifoaming agent filling device |
| CN202647192U (en) * | 2012-06-21 | 2013-01-02 | 中国石油大学(北京) | Piston type natural gas pipeline batch feeder |
-
2012
- 2012-06-21 CN CN201210211585.2A patent/CN103244827B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2304803Y (en) * | 1997-05-09 | 1999-01-20 | 四川石油管理局输气公司 | Corrosion inhibitor atomizing and filling apparatus for long distance gas pipelines |
| CA2591378A1 (en) * | 2006-06-12 | 2007-12-12 | Nils Kohlhase | Gas-operated diaphragm dosing pump |
| CN102226501A (en) * | 2011-06-21 | 2011-10-26 | 成都孚吉科技有限责任公司 | Solid antifoaming agent filling device |
| CN202647192U (en) * | 2012-06-21 | 2013-01-02 | 中国石油大学(北京) | Piston type natural gas pipeline batch feeder |
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|---|---|
| CN103244827A (en) | 2013-08-14 |
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Effective date of registration: 20150409 Address after: 102249 Beijing city Changping District Road No. 18 Applicant after: China University of Petroleum (Beijing) Applicant after: Xi'an Hai Zhi mechanical & electronic equipment corporation, Ltd Applicant after: Xian Ao benefit of Petroleum Technology Development Co., Ltd. Address before: 102249 Beijing city Changping District Road No. 18 Applicant before: China University of Petroleum (Beijing) Applicant before: Xian Ao benefit of Petroleum Technology Development Co., Ltd. |
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