CN112856234B - High-pressure pipeline assembly - Google Patents
High-pressure pipeline assembly Download PDFInfo
- Publication number
- CN112856234B CN112856234B CN202110224917.XA CN202110224917A CN112856234B CN 112856234 B CN112856234 B CN 112856234B CN 202110224917 A CN202110224917 A CN 202110224917A CN 112856234 B CN112856234 B CN 112856234B
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- Prior art keywords
- pipe
- conveying pipe
- hoop
- main conveying
- ball
- Prior art date
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 18
- 210000005056 cell body Anatomy 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 13
- 239000000463 material Substances 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 11
- 238000007599 discharging Methods 0.000 description 6
- 239000006260 foam Substances 0.000 description 5
- 239000002518 antifoaming agent Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013530 defoamer Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
- E21B43/168—Injecting a gaseous medium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Details Of Reciprocating Pumps (AREA)
- Supports For Pipes And Cables (AREA)
Abstract
The invention relates to the technical field of pipeline conveying and discloses a high-pressure pipeline assembly, which comprises a plunger pump, a main conveying pipe, a shunt pipe with two closed ends and a tank body, wherein the main conveying pipe is communicated with the shunt pipe, the plunger pump is arranged at the feeding end of the main conveying pipe, the plunger pump is positioned at the tank bottom of the tank body, a first conveying pipe is arranged on the shunt pipe, a sealing plate is arranged in the first conveying pipe, a discharge hole is formed in the sealing plate, the axial lead of the discharge hole is close to the edge of the sealing plate, a pressure regulating pipe is arranged at the discharge end of the first conveying pipe, a first bolt is screwed into the pressure regulating pipe, a ball and a spring for blocking the discharge end of the first conveying pipe are also arranged in the pressure regulating pipe, and a second conveying pipe communicated with the inner cavity of the pressure regulating pipe is also arranged on the pressure regulating pipe. The beneficial effects of the invention are as follows: the material in the first conveyer pipe is directed to the ball that blocks up at first conveyer pipe mouth of pipe through the discharge gate on the close shrouding, makes the ball take place to rotate, avoids the ball one side to bear the impact damage, has prolonged the life of ball.
Description
Technical Field
The invention relates to the technical field of pipeline conveying, in particular to a high-pressure pipeline assembly.
Background
Foam drainage gas production technology is widely applied to natural gas exploitation, foam can be generated after foaming agent is filled in a gas well, the foam is conveyed to a gas collecting station along with airflow, and the foam can cause great damage to a separator of the gas collecting station, so that the foam needs to be eliminated before the separator, and the most common mode is continuous filling of the foaming agent. The gas gathering station is generally provided with a plurality of pipelines which are led in, the pressures of the pipelines are different, and a set of defoaming agent filling system (pumping system) is arranged for each pipeline in a conventional mode, so that the filling effect can be ensured, but the cost is high, more devices are added, the failure rate is greatly increased, and the maintenance difficulty is also increased.
In the prior art, the pipes in the pipe system are usually placed on the bracket or welded and fixed on the bracket. If the pipeline is only placed on the support, the pipeline is not provided with a good fixing and limiting function, and often the pipeline is displaced under the condition that the pipeline is subjected to external force or internal force, so that the pipeline is damaged, and the operation risk and the maintenance cost are increased. And the welding on the bracket increases the construction cost, prolongs the installation time and causes unnecessary waste.
Disclosure of Invention
The invention aims to provide a high-pressure pipeline assembly to solve the problem that the cost of filling defoamer in a gas pipe of an existing gas gathering station is high.
The aim of the invention is achieved by the following technical scheme: the utility model provides a high-pressure pipeline subassembly, includes plunger pump, main conveying pipe, shunt tubes and the cell body that both ends were closed, main conveying pipe with the shunt tubes intercommunication, the plunger pump is installed the feed end of main conveying pipe, the plunger pump is located the bottom of the pool of cell body, be provided with first conveyer pipe on the shunt tubes, be provided with the closing plate in the first conveyer pipe, the closing plate is close to the discharge end of first conveyer pipe, the discharge gate has been seted up on the closing plate, the axial lead of discharge gate is close to the edge of closing plate, the tap tube is installed to the discharge end of first conveyer pipe, twist first bolt in the tap tube, still install the jam in the tap tube ball and the spring of first conveyer pipe discharge end, the spring compression is installed between the ball with first bolt, still be provided with the second conveyer pipe rather than the inner chamber intercommunication on the tap tube.
Preferably, the second conveying pipe is installed on the ground through a supporting structure, the supporting structure comprises a T-shaped groove arranged on the ground, a sliding block is installed in the T-shaped groove in a tight fit mode, a supporting block is integrally formed on the sliding block, a notch is formed in one side, away from the sliding block, of the supporting block, and the second conveying pipe is clamped in the notch.
Preferably, a pair of T-shaped vertical grooves are formed in the inner wall of the tank body, the pair of T-shaped vertical grooves are respectively located on two sides of the main conveying pipe, a second nut is installed in the vertical grooves, a second bolt is screwed into the second nut, a second hoop is arranged on the main conveying pipe, an oblong through hole is formed in an arm of the second hoop, and the second bolt penetrates through the oblong through hole.
Preferably, a first hoop is hinged to one side of the notch, a rotating shaft of the first hoop is parallel to the second conveying pipe, a fastening piece for locking the first hoop is arranged at a port of the notch, and the fastening piece is far away from the rotating shaft of the first hoop.
Preferably, a locking block is arranged on the first hoop, the locking block is far away from the rotating shaft of the first hoop, the fastening piece is an elastic rod, a retaining groove is formed in the surface, close to the second conveying pipe, of the fastening piece, and the locking block is clamped in the retaining groove.
Preferably, the number of the retaining grooves is several, and the retaining grooves are distributed along the direction vertical to the ground.
Preferably, the main conveying pipe is provided with a check valve.
The invention has the following advantages:
1. the material in the first conveyer pipe is directed to the ball blocked at the mouth of the first conveyer pipe through the discharge port on the sealing plate, and as the axial lead of the discharge port is not coincident with the axial lead of the first conveyer pipe, the material directed to the ball enables the ball to rotate, so that impact damage to one surface of the ball is avoided, and the service life of the ball is prolonged.
2. The second anchor ear is made to clamp the main conveying pipe by tightening the second bolt, so that the main conveying pipe is firmly fixed on the inner wall of the tank body, and the long round through hole on the second anchor ear can finely adjust the horizontal position of the anchor ear on the inner wall of the tank body, so that the slightly bent main conveying pipe can be conveniently installed.
3. The first bolt is screwed to adjust the pipeline pressure of the plunger pump for filling the defoaming agent into the gas pipes, so that the filling pressure is higher than the highest pipe pressure in the gas pipes, one plunger pump is used for pressurizing a plurality of gas pipes, and the production cost is reduced.
4. The locking block is clamped in the retaining groove by rotating the first hoop, so that the gas pipe is rapidly clamped, the fixing is firm, the installation is convenient, the installation time is shortened, and the construction cost is reduced.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a second embodiment of the present invention;
FIG. 3 is a schematic diagram III of the structure of the present invention;
FIG. 4 is an enlarged partial schematic view of FIG. 1 at A;
FIG. 5 is an enlarged partial schematic view at B in FIG. 2;
FIG. 6 is an enlarged partial schematic view of FIG. 3 at C;
fig. 7 is a schematic view of a mounting structure of the second anchor ear;
FIG. 8 is a partially enlarged schematic illustration of FIG. 7 at D;
FIG. 9 is a schematic view of the mounting structure of the support block;
in the figure, the check valve 1, the main conveying pipe 2, the shunt pipe 3, the first conveying pipe 4, the pressure regulating pipe 5, the first bolt 6, the ball 7, the spring 8, the second conveying pipe 9, the T-shaped groove 10, the slide block 11, the support block 12, the notch 13, the first hoop 14, the fastener 15, the locking block 16, the retaining groove 17, the anti-slip groove 18, the clamping hoop 19, the plunger pump 20, the tank body 21, the vertical groove 22, the second nut 23, the second bolt 24, the second hoop 25, the oblong through hole 26, the sealing plate 27 and the discharge hole 28.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without collision.
Example 1:
as shown in fig. 1, 2, 5, 7 and 8, a multi-pressure filling and adjusting system comprises a plunger pump 20, a main conveying pipe 2, a shunt pipe 3 with two closed ends and a tank body 21, wherein the main conveying pipe 2 is communicated with the shunt pipe 3, the plunger pump 20 is arranged at the feeding end of the main conveying pipe 2, the plunger pump 20 is positioned at the tank bottom of the tank body 21 filled with defoaming agent, a pair of T-shaped vertical grooves 22 are formed in the inner wall of the tank body 21, the pair of vertical grooves 22 are respectively positioned at two sides of the main conveying pipe, a second nut 23 is arranged in the vertical grooves 22, a second bolt 24 is screwed in the second nut 23, a second hoop 25 is arranged on the main conveying pipe, an oblong through hole 26 is formed in an arm of the second hoop 25, the second bolt 24 penetrates through the oblong through hole 26, the second hoop 25 is tightly clamped on the main conveying pipe by screwing the second bolt 24, thereby firmly fixing the main conveying pipe on the inner wall of the tank body 21, the long round through hole 26 on the second hoop 25 can finely adjust the horizontal position of the hoop on the inner wall of the tank body 21 so as to conveniently install the slightly bent main conveying pipe 2, both ends of the shunt pipe 3 are provided with manual valves, both ends of the shunt pipe 3 are opened and closed through the manual valves, other pipelines can be connected into the shunt pipe 3 through the manual valves, the main conveying pipe 2 is provided with a check valve 1, the main conveying pipe 2 is welded in the middle part of the shunt pipe 3, a plunger pump is arranged at the feeding end of the main conveying pipe 2 (i.e. the end far away from the shunt pipe 3), the shunt pipe 3 is provided with a first conveying pipe 4, the first conveying pipe 4 is paved on the ground and fixed by using a clamp 19, a sealing plate 27 is arranged in the first conveying pipe 4, the sealing plate 27 is close to the discharging end of the first conveying pipe 4, a discharging hole 28 is arranged on the sealing plate 27, the axial lead of the discharging hole 28 is close to the edge of the sealing plate 27, the pressure regulating pipe 5 is installed to the discharge end of first conveyer pipe 4, twist first bolt 6 in the pressure regulating pipe 5, still install ball 7 and spring 8 that blocks up first conveyer pipe 4 discharge end in the pressure regulating pipe 5, spring 8 compression is installed between ball 7 and first bolt 6, the material in the first conveyer pipe 4 is through the discharge gate 28 on the close shrouding 27 to block up at first conveyer pipe 4 orificial ball 7, because the axial lead of discharge gate 28 and the axial lead of first conveyer pipe 4 do not coincide, so the material of the ball 7 of orientation makes ball 7 take place to rotate, avoid ball 7 one side to bear impact damage, the life of ball 7 has been prolonged, still be provided with the second conveyer pipe 9 with its inner chamber intercommunication on the pressure regulating pipe 5, the discharge end welding of second conveyer pipe 9 is on the gas-supply pipe, and second conveyer pipe 9 is with the pipe intercommunication, because the pressure difference in different pipes, make the intraductal pipe pressure of each conveyer be greater than the biggest pipe pressure in the gas-supply pipe through twisting first bolt 6, thereby the realization is to the gas-supply pump to the multiple plunger pressure, the gas-supply pump has been reduced.
In this embodiment, as shown in fig. 1, 2, 5, 7, 8, 9, the bearing structure is including setting up the T type groove 10 on ground, install slider 11 in the T type groove 10 tight fit, integrated into one piece has supporting shoe 12 on the slider 11, notch 13 has been seted up on the one side that slider 11 was kept away from to supporting shoe 12, the contour line of notch 13 is the arc, the arc is the major arc, supporting shoe 12 is made by elastic material, be provided with anti-skidding tooth on the breach 13 inner wall, second conveyer pipe 9 card is in notch 13, the installation is quick and convenient, and anti-skidding line 18 has increased the frictional force between second conveyer pipe 9 and the supporting shoe 12, the risk that second conveyer pipe 9 takes place to rotate has been reduced.
Example 2:
as shown in fig. 1 to 8, a multi-pressure filling and adjusting system comprises a plunger pump 20, a main conveying pipe 2, a shunt pipe 3 with two closed ends and a tank body 21, wherein the main conveying pipe 2 is communicated with the shunt pipe 3, the plunger pump 20 is arranged at the feeding end of the main conveying pipe 2, the plunger pump 20 is positioned at the tank bottom of the tank body 21 filled with defoaming agent, a pair of T-shaped vertical grooves 22 are formed in the inner wall of the tank body 21, the pair of vertical grooves 22 are respectively positioned at two sides of the main conveying pipe, a second nut 23 is arranged in the vertical grooves 22, a second bolt 24 is screwed in the second nut 23, a second hoop 25 is arranged on the main conveying pipe, an oblong through hole 26 is formed in an arm of the second hoop 25, the second bolt 24 penetrates through the oblong through hole 26, the second hoop 25 is tightly clamped on the main conveying pipe by screwing the second bolt 24, thereby the main conveying pipe is firmly fixed on the inner wall of the tank body 21, the long round through hole 26 on the second hoop 25 can finely adjust the horizontal position of the hoop on the inner wall of the tank body 21 so as to conveniently install the slightly bent main conveying pipe 2, both ends of the shunt pipe 3 are provided with manual valves, both ends of the shunt pipe 3 are opened and closed through the manual valves, other pipelines can be connected into the shunt pipe 3 through the manual valves, the main conveying pipe 2 is provided with a check valve 1, the main conveying pipe 2 is welded in the middle part of the shunt pipe 3, a plunger pump is arranged at the feeding end of the main conveying pipe 2 (i.e. the end far away from the shunt pipe 3), the shunt pipe 3 is provided with a first conveying pipe 4, the first conveying pipe 4 is paved on the ground and fixed by using a clamp 19, a sealing plate 27 is arranged in the first conveying pipe 4, the sealing plate 27 is close to the discharging end of the first conveying pipe 4, a discharging hole 28 is arranged on the sealing plate 27, the axial lead of the discharging hole 28 is close to the edge of the sealing plate 27, the pressure regulating pipe 5 is installed to the discharge end of first conveyer pipe 4, twist first bolt 6 in the pressure regulating pipe 5, still install ball 7 and spring 8 that blocks up first conveyer pipe 4 discharge end in the pressure regulating pipe 5, spring 8 compression is installed between ball 7 and first bolt 6, the material in the first conveyer pipe 4 is through the discharge gate 28 on the close shrouding 27 to block up at first conveyer pipe 4 orificial ball 7, because the axial lead of discharge gate 28 and the axial lead of first conveyer pipe 4 do not coincide, so the material of the ball 7 of orientation makes ball 7 take place to rotate, avoid ball 7 one side to bear impact damage, the life of ball 7 has been prolonged, still be provided with the second conveyer pipe 9 with its inner chamber intercommunication on the pressure regulating pipe 5, the discharge end welding of second conveyer pipe 9 is on the gas-supply pipe, and second conveyer pipe 9 is with the pipe intercommunication, because the pressure difference in different pipes, make the intraductal pipe pressure of each conveyer be greater than the biggest pipe pressure in the gas-supply pipe through twisting first bolt 6, thereby the realization is to the gas-supply pump to the multiple plunger pressure, the gas-supply pump has been reduced.
In this embodiment, as shown in fig. 1-8, the supporting structure includes a T-shaped slot 10 disposed on the ground, a slider 11 is tightly fitted in the T-shaped slot 10, a supporting block 12 is integrally formed on the slider 11, a notch 13 is formed on one side of the supporting block 12 away from the slider 11, the second conveying pipe 9 is clamped in the notch 13, a first hoop 14 is hinged on one side of the notch 13, a rotating shaft of the first hoop 14 is parallel to the second conveying pipe 9, a fastening piece 15 for locking the first hoop 14 is disposed at a port of the notch 13, the fastening piece 15 is far away from the rotating shaft of the first hoop 14, a locking block 16 is disposed on the first hoop 14, the locking block 16 is far away from the rotating shaft of the first hoop 14, the fastening piece 15 is an elastic block, a retaining groove 17 is formed on a surface of the fastening piece 15 near the second conveying pipe 9, and the locking block 16 is clamped in the retaining groove 17, so that the first hoop 14 is clamped in the retaining groove 17, the air conveying pipe is fast clamped, the fastening piece 15 is firm and convenient to install, and the construction cost is reduced.
In this embodiment, as shown in fig. 1-8, the number of the retaining grooves 17 is several, and the retaining grooves are distributed along the direction perpendicular to the ground, and the locking pieces 16 are clamped in different retaining grooves 17, so that the second conveying pipes 9 with different sizes are clamped, and the application range is wide.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (7)
1. The utility model provides a high-pressure pipeline subassembly, includes plunger pump, main conveying pipe, shunt tubes and the cell body that both ends were closed, main conveying pipe with shunt tubes intercommunication, the plunger pump is installed the feed end of main conveying pipe, the plunger pump is located the bottom of the pool of cell body, its characterized in that: be provided with first conveyer pipe on the shunt tubes, be provided with the closing plate in the first conveyer pipe, the closing plate is close to the discharge end of first conveyer pipe, the discharge gate has been seted up on the closing plate, the axial lead of discharge gate is close to the edge of closing plate, the pressure regulating pipe is installed to the discharge end of first conveyer pipe, screw up first bolt in the pressure regulating pipe, still install in the pressure regulating pipe and block up ball and the spring of first conveyer pipe discharge end, the spring compression is installed the ball with between the first bolt, still be provided with on the pressure regulating pipe with its inner chamber intercommunication's second conveyer pipe.
2. A high pressure piping assembly as claimed in claim 1, wherein: the second conveying pipe is installed on the ground through a supporting structure, the supporting structure comprises a T-shaped groove arranged on the ground, a sliding block is installed in the T-shaped groove in a tight fit mode, a supporting block is integrally formed on the sliding block, a notch is formed in one side, away from the sliding block, of the supporting block, and the second conveying pipe is clamped in the notch.
3. A high pressure pipe assembly according to claim 1 or 2, wherein: a pair of T-shaped vertical grooves are formed in the inner wall of the tank body, the pair of T-shaped vertical grooves are respectively located on two sides of the main conveying pipe, a second nut is installed in the vertical grooves, a second bolt is screwed into the second nut, a second hoop is arranged on the main conveying pipe, an oblong through hole is formed in an arm of the second hoop, and the second bolt penetrates through the oblong through hole.
4. A high pressure piping assembly as claimed in claim 2, wherein: one side of the gap is hinged with a first hoop, the rotating shaft of the first hoop is parallel to the second conveying pipe, a fastening piece for locking the first hoop is arranged at a port of the gap, and the fastening piece is far away from the rotating shaft of the first hoop.
5. A high pressure piping assembly as claimed in claim 4, wherein: the locking device is characterized in that a locking block is arranged on the first hoop, the locking block is far away from the rotating shaft of the first hoop, the fastening piece is an elastic rod, a retaining groove is formed in the surface, close to the second conveying pipe, of the fastening piece, and the locking block is clamped in the retaining groove.
6. A high pressure piping assembly as claimed in claim 5, wherein: the number of the retaining grooves is several, and the retaining grooves are distributed along the direction vertical to the ground.
7. A high pressure piping assembly as claimed in claim 1, wherein: the main conveying pipe is provided with a check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110224917.XA CN112856234B (en) | 2021-03-01 | 2021-03-01 | High-pressure pipeline assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110224917.XA CN112856234B (en) | 2021-03-01 | 2021-03-01 | High-pressure pipeline assembly |
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| Publication Number | Publication Date |
|---|---|
| CN112856234A CN112856234A (en) | 2021-05-28 |
| CN112856234B true CN112856234B (en) | 2024-03-29 |
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| CN202110224917.XA Active CN112856234B (en) | 2021-03-01 | 2021-03-01 | High-pressure pipeline assembly |
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| CN114377901B (en) * | 2021-12-14 | 2022-09-13 | 广东海洋大学 | Paint solar panel's graphite alkene processingequipment |
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