CN217208247U - Fluid heating rectifier joint and natural gas pipeline hydrate prevention and control system - Google Patents
Fluid heating rectifier joint and natural gas pipeline hydrate prevention and control system Download PDFInfo
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- CN217208247U CN217208247U CN202220887396.6U CN202220887396U CN217208247U CN 217208247 U CN217208247 U CN 217208247U CN 202220887396 U CN202220887396 U CN 202220887396U CN 217208247 U CN217208247 U CN 217208247U
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- fluid heating
- joint
- inner core
- urceolus
- natural gas
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 70
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 239000012530 fluid Substances 0.000 title claims abstract description 46
- 239000003345 natural gas Substances 0.000 title claims abstract description 35
- 230000002265 prevention Effects 0.000 title claims abstract description 16
- 239000007789 gas Substances 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 13
- 150000004677 hydrates Chemical class 0.000 description 4
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- -1 Natural gas hydrates Chemical class 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000005411 Van der Waals force Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012821 model calculation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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Abstract
The utility model discloses a fluid heating rectifier joint and natural gas line hydrate prevention and cure system, wherein the system includes gas transmission pipeline and sets up the choke valve on gas transmission pipeline, be equipped with fluid heating rectifier joint, pressure sensor and temperature sensor on the gas transmission pipeline, still include central controller, and with power cord electric connection's power, pressure sensor, temperature sensor and power all are connected with the central controller communication, rectifier joint includes the urceolus and sets up the inner core in the urceolus, the inner core includes the cowling piece that sets up along the urceolus axial, be equipped with heating element in the inner core, the cowling piece be with the conducting strip of heating element contact, heating element has the power cord that runs through to the urceolus outside. Adopt modular fluid heating rectifier joint, have good matching nature with current natural gas pipeline, but install the use fast, and fully consider the influence that choke valve pressure adjustment produced, the prevention and cure effect is better, overall structure is succinct, implements the degree of difficulty low.
Description
Technical Field
The utility model belongs to the technical field of the natural gas is carried, concretely relates to fluid heating rectifier joint and natural gas line hydrate prevention and cure system.
Background
Natural gas hydrates are cage-like crystalline compounds of natural gas with water at a certain temperature and pressure. Water molecules are combined through hydrogen bonds to form holes with cage structures, and natural gas molecules are enveloped in the cage holes of the water molecules under the action of van der Waals force. Natural gas hydrates are also one of the most typical types of hydrates that exist in nature.
The natural gas adopts the choke valve to carry out pressure control through adopting among the pipeline transportation process usually, and the pressure drop arouses the temperature drop very easily, and then leads to producing hydrate in the pipeline, hydrate gathering, and the lower condition of ambient temperature in addition, then very easily causes the jam of pipeline, valve port to and the damage of pipe fitting, equipment instrument, make whole production transportation process be absorbed in paralysedly, seriously influence the normal transportation and the use of natural gas, cause huge economic loss simultaneously.
Some natural gas pipeline hydrate prevention and control equipment or experimental devices and the like appear on the market, for example, the patent number is "201620867806.5", the name is "a natural gas pipeline hydrate is frozen and is blocked up prevention and rapid decomposition experimental device", but as disclosed in the patent, a direct temperature control mode is mostly adopted, namely, the temperature of flowing natural gas is controlled, so that the temperature of the flowing natural gas is kept above the critical temperature of generating hydrate in the section of conveying pipeline, relatively speaking, the implementation difficulty is increased, the influence of a throttle valve is often ignored, the matching performance with the existing natural gas conveying pipeline is poor, and the overall practicability is poor.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a fluid heating rectifier joint and natural gas line hydrate prevention and cure system to among the solution prior art, hydrate prevention and cure equipment is implemented complicacy, and the implementation degree of difficulty is big, the not good enough scheduling problem of practicality.
The technical scheme is as follows:
the utility model provides a fluid heating rectifier connects, includes the urceolus and sets up the inner core in the urceolus, the inner core includes the cowling panel along urceolus axial setting, and its key lies in: the inner core is internally provided with a heating element, the rectifying piece is a heat conducting piece contacted with the heating element, and the heating element is provided with a power line penetrating to the outside of the outer cylinder.
By adopting the scheme, the fluid flowing through can be rectified by utilizing the internal rectifying piece, so that the fluid is converted into laminar flow from turbulent flow as much as possible, a more stable flowing state is achieved, the gas is favorable for long-distance transportation, meanwhile, the flowing gas can be heated, and the temperature of the flowing gas is increased to be higher than the critical temperature generated by hydrates under the flowing pressure, and the joint can be used for preventing and controlling the hydrates of the natural gas.
Preferably, the method comprises the following steps: the inner core activity sets up in the urceolus, and the urceolus both ends all have with it screw-thread fit's adapter, the inner of adapter offsets with the tip that corresponds of inner core, and the outer end has internal thread or external screw thread. Scheme more than adopting utilizes the adapter to support tight mounting means with the inner core, is favorable to reducing the processing and installs the degree of difficulty, is convenient for install fast to existing pipeline simultaneously, improves its site practicability greatly.
Preferably, the method comprises the following steps: the inner core comprises an inner barrel, the outer diameters of the two ends of the inner barrel are matched with the inner diameter of the outer barrel, the outer diameter of the middle of the inner barrel is smaller than the inner diameter of the outer barrel, and the power line penetrates out of the middle of the inner barrel. By adopting the scheme, the inner core is conveniently and quickly fixedly arranged in the outer barrel, the two ends of the inner core are plugged preliminarily, and gaps between the middle parts of the inner barrel and the outer barrel are favorable for forming a heat preservation space, so that the influence of external environment temperature is reduced.
Preferably, the method comprises the following steps: and sealing rings are arranged between the two ends of the inner cylinder and the outer cylinder. By adopting the scheme, the annular space formed between the inner barrel and the outer barrel is better in relative sealing performance, the influence of the environmental temperature can be further reduced, and the problem that the inner barrel and the outer barrel are inconvenient to disassemble and take in the later period due to large surface contact can be avoided.
Preferably, the method comprises the following steps: the inner core is internally provided with a cavity arranged along the axial direction of the inner core, the heating element is positioned in the cavity, and two ends of the cavity are fixedly provided with plugs. By adopting the scheme, the balance of the inner core structure is convenient to ensure, and meanwhile, the heating element can better transfer heat to each rectifier.
Preferably, the method comprises the following steps: the fairing is located the circumference outside of cavity, and at least one of them and cavity outer wall fixed connection, the power cord runs through stretch into in the cavity behind the arbitrary fairing fixed with the cavity outer wall. By adopting the scheme, the power line is prevented from being exposed in the fluid, and the service life of the power line is prolonged.
Preferably, the method comprises the following steps: the commutator segments are distributed in an annular array along the center of the inner cylinder or in a linear array along any diameter direction of the inner cylinder.
On the basis of the scheme, the application also provides a natural gas pipeline hydrate control system for controlling hydrates in the natural gas conveying process.
The technical scheme is as follows:
the utility model provides a natural gas line hydrate prevention and cure system, includes gas transmission pipeline and sets up the choke valve on gas transmission pipeline, its key lies in: the gas transmission pipeline is provided with the fluid heating rectifying joint, the pressure sensor and the temperature sensor, wherein the fluid heating rectifying joint is positioned at the upstream of the throttling valve, the pressure sensor and the temperature sensor are positioned at the downstream of the throttling valve, the gas transmission pipeline further comprises a central controller and a power supply electrically connected with the power line, and the pressure sensor, the temperature sensor and the power supply are all in communication connection with the central controller.
By adopting the scheme, the relation curve graph of the temperature and the pressure of the hydrate generated by inputting natural gas in the central controller in advance during use is compared with the pressure and the temperature after the valve, so that whether the fluid heating rectifying joint is heated or kept warm is controlled, and the generation of the hydrate is inhibited.
Preferably, the method comprises the following steps: the power supply is a solar cell. By adopting the scheme, local control is facilitated, and remote control cost is saved.
Preferably, the method comprises the following steps: the distance between the fluid heating rectifying joint and the throttle valve is larger than the distance between the relative pressure sensor and the throttle valve. By adopting the scheme, the effective use distance of the system is favorably increased, and the overall cost of hydrate control along the pipeline is saved.
Compared with the prior art, the beneficial effects of the utility model are that:
adopt the utility model provides a fluid heating rectifier joint and natural gas line hydrate prevention and cure system adopts modular fluid heating rectifier joint, has good matching nature with current natural gas pipeline, can install the use fast, and fully considers the influence that choke valve pressure adjustment produced, and the prevention and cure effect is better, and overall structure is succinct, implements the degree of difficulty and hangs down.
Drawings
FIG. 1 is an exploded view of a fluid heating rectifier junction configuration of the present application;
FIG. 2 is a schematic view of a natural gas pipeline hydrate control system according to the present application;
FIG. 3 is a cross-sectional view of a fluid heating fairing joint;
FIG. 4 is a perspective view of a fluid heating fairing joint;
FIG. 5 is a schematic view of a distribution of a commutator segment;
FIG. 6 is another schematic view of a distribution of a fairing;
fig. 7 is a schematic diagram of the operation of the hydrate control system for natural gas pipelines.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 to 7, a fluid heating rectifier joint and a natural gas pipeline hydrate prevention system are shown, wherein the fluid heating rectifier joint includes an outer cylinder 1 and an inner core 2 disposed in the outer cylinder 1, and the inner core 2 mainly includes a rectifier plate 20 disposed along an axial direction of the outer cylinder 1, as shown in the figure, a heating element 21 is further disposed in the inner core 2, the rectifier plate 20 is a heat conducting plate contacting with the heating element 21, the heating element 21 has a power line 22 penetrating to the outside of the outer cylinder 1, and is connected with an external power supply through the power line 22, and the heating element 21 can work to generate heat and transfer the heat to all the rectifier plates 20.
Referring to fig. 1, fig. 3 and fig. 4, the activity of inner core 2 sets up in urceolus 1, and urceolus 1 both ends all have with it screw-thread fit's adapter 3, and the inner of adapter 3 offsets with the corresponding tip of inner core 2, and the outer end has internal thread or external screw thread, and inner core 2 relies on the adapter 3 at both ends to support the mounting means who tightly is fixed in urceolus 1, and the later stage of being convenient for is changed, and reduces the installation degree of difficulty.
The inner core 2 comprises an inner cylinder 23, the inner cylinder 23 and the outer cylinder 1 are both in a cylindrical shape with two open ends, the outer diameters of the two ends of the inner cylinder 23 are matched with the inner diameter of the outer cylinder 1, the outer diameter of the middle part of the inner cylinder 23 is smaller than the inner diameter of the outer cylinder 1, the power cord 22 penetrates out of the middle part of the inner cylinder 23 and then penetrates through the outer cylinder 1, the commutator segments 20 are uniformly distributed in the inner cylinder 23, as can be seen by combining fig. 5 and 6, the middle part of the inner cylinder 23 is provided with a chamber 25 arranged along the axis of the inner cylinder, the commutator segments 20 are distributed on the circumferential outer side of the chamber 25, two embodiments of the distribution structure of the commutator segments 20 are provided, the commutator segments 20 in fig. 5 are distributed in an annular array along the circumferential direction of the chamber 25, the commutator segments 20 in fig. 6 are integrally distributed in a linear array along the diameter direction of the inner cylinder 23, both can play a certain role in rectifying the fluid, wherein the structure shown in fig. 6 has a better rectifying effect on the gas, so that the fluid state tends to a laminar flow, and the thickness of the commutator segments 20 is about 5cm in specific implementation, the length is 0.3-0.5m, and the porosity of the flow channel in the inner cylinder 23 is 0.5-0.8.
The cavity 25 is open at two ends, and the heating element 21 is detachably disposed in the cavity 25, plugs 26 are fixedly disposed at two ends of the cavity 25, the plugs 26 and the ends of the cavity 25 can be in threaded engagement, as shown in fig. 5 and 6, because the fairing 20 is located at the circumferential outer side of the cavity 25 and at least one fairing 20 is fixedly connected with the outer wall of the cavity 25 in the implementation process, the power line 22 penetrates through any fairing 20 fixed with the outer wall of the cavity 25 and then extends into the cavity 25 to be connected with the heating element 21, in the implementation process, the heating element 21 can be an electric heating rod, a resistance wire, or a deconcentrator connected with a plurality of resistance wires, and the resistance wires are directly embedded into the commutator segments 20, this embodiment is relatively more suitable for the distribution of the fillets 20 shown in fig. 6, the resistance wires being embedded in each fillet 20 through the side wall of the inner cylinder 23.
In order to improve the joint reliability, reduce the risk of leakage and prolong the service life of the power cord 22, sealing rings 24 are provided between the two ends of the inner barrel 23 and the outer barrel 1.
On the basis of the scheme, the application also provides a natural gas pipeline hydrate control system, and as can be seen by referring to FIGS. 2 and 7, which mainly comprises a gas transmission pipeline 4, a throttle valve 5 arranged on the gas transmission pipeline 4, a fluid heating rectifying joint, a pressure sensor 6 and a temperature sensor 7, wherein the fluid heating rectifying joint is positioned at the upstream of the throttle valve 5, the two ends of the fluid heating rectifying joint are connected with the gas transmission pipeline 4 through the adapter 3, the adapter 3 mainly plays the purpose of screw-buckle type conversion so that the fluid heating rectifying joint can be quickly installed on the existing gas transmission pipeline 4, the pressure sensor 6 and the temperature sensor 7 are positioned at the downstream of the throttle valve 5, and the fluid heating rectifying joint also comprises a central controller 8, and a power supply electrically connected with the power line 22, wherein the pressure sensor 6, the temperature sensor 7 and the power supply are in communication connection with the central controller 8, and wireless signal transmission is generally adopted.
In specific implementation, a solar cell is preferably used as a power supply, which is relatively more beneficial to the application of a field natural gas remote transportation pipeline, the power supply can independently supply power to the heating element 21 in the fluid heating rectifier joint, and also can simultaneously supply power to the heating element 21 and the central controller 8, but the on-off between the power supply and the heating element 21 is controlled by the central controller 8. Furthermore, the distance between the fluid heating rectifier junction and the throttle valve 5 is greater than the distance between the relative pressure sensor 6 and the throttle valve 5.
Referring to the fluid heating rectifier joint and the natural gas pipeline hydrate prevention and control system shown in fig. 1 to 7, in implementation, the fluid heating rectifier joint is first installed on the gas pipeline 4 as shown in fig. 2, a hydrate generation critical curve is input in the central controller 8 in advance, and the abscissa of each point in the natural gas hydrate generation critical curve is the operating temperature and the ordinate is the pressure. Specifically, the natural gas hydrate generation critical curve can be obtained through experiment acquisition, Multiflash software acquisition or theoretical model calculation such as Chen-Guo and the like, namely, the temperature T of the natural gas hydrate generated under the pressure P can be quickly known through the pressure curve.
The power supply supplies power to the central controller 8, the pressure sensor 6 and the temperature sensor 7 transmit measured values to the central controller 8, when the pressure P1 after the valve (corresponding to the critical temperature T2 for generating the natural gas hydrate) is detected and the actually measured temperature T1 after the valve is always greater than the critical temperature T2, the power supply and the heating element 21 are always in a disconnected state, that is, the heating element 21 does not work, otherwise, when the temperature T1 after the valve is less than the critical temperature T2, the central controller 8 timely controls the power supply to supply power to the heating element 21, so that the rectifying plate 20 rapidly heats the gas flowing through, the pressure is usually in the range of 6MPa-7MPa, the heating temperature is about 5 ℃, the temperature of the natural gas under the corresponding pressure after the valve is always higher than the critical temperature for generating the hydrate, and the hydrate prevention effect is achieved.
In general, all fluid heating rectifier joints along the gas transmission pipeline 4 can be managed in a centralized manner, that is, only one central controller 8 is arranged to control the heating elements 21 in all the fluid heating rectifier joints and provide corresponding alarms, and on the other hand, in the heating process, the pipeline distance between the fluid heating rectifier joints and the non-independent sensors 6, the corresponding heat dissipation and other factors are fully considered to ensure more accurate and reliable control.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.
Claims (10)
1. The utility model provides a fluid heating rectifier connects, includes urceolus (1) and sets up inner core (2) in urceolus (1), inner core (2) are including fillet (20) along urceolus (1) axial setting, its characterized in that: be equipped with heating element (21) in inner core (2), cowling panel (20) be with the conducting strip of heating element (21) contact, heating element (21) have run through to urceolus (1) outer power cord (22).
2. The fluid heating fairing joint of claim 1, wherein: inner core (2) activity sets up in urceolus (1), urceolus (1) both ends all have with it screw-thread fit's adapter (3), the inner of adapter (3) offsets with the tip that corresponds of inner core (2), and the outer end has internal thread or external screw thread.
3. The fluid heating fairing joint of claim 1, wherein: the inner core (2) comprises an inner cylinder (23), the outer diameters of the two ends of the inner cylinder (23) are matched with the inner diameter of the outer cylinder (1), the outer diameter of the middle part of the inner cylinder (23) is smaller than the inner diameter of the outer cylinder (1), and the power line (22) penetrates out of the middle part of the inner cylinder (23).
4. The fluid heating fairing joint of claim 3, wherein: and sealing rings (24) are arranged between the two ends of the inner cylinder (23) and the outer cylinder (1).
5. The fluid heating fairing joint of claim 1, wherein: the heating core is characterized in that a cavity (25) is arranged in the inner core (2) along the axial direction of the inner core, the heating element (21) is located in the cavity (25), and plugs (26) are fixedly arranged at two ends of the cavity (25).
6. The fluid heating fairing joint of claim 5, wherein: fillet (20) are located the circumference outside of cavity (25), and at least one of them and cavity (25) outer wall fixed connection, power cord (22) run through behind arbitrary fillet (20) fixed with cavity (25) outer wall and stretch into in cavity (25).
7. The fluid heating fairing joint of claim 1, wherein: the fairing pieces (20) are distributed in an annular array along the center of the inner cylinder (23) or in a linear array along any diameter direction of the inner cylinder (23).
8. The utility model provides a natural gas line hydrate prevention and cure system, includes gas transmission pipeline (4) and sets up choke valve (5) on gas transmission pipeline (4), its characterized in that: the gas transmission pipeline (4) is provided with a fluid heating rectifying joint, a pressure sensor (6) and a temperature sensor (7) according to any one of claims 1 to 7, wherein the fluid heating rectifying joint is positioned at the upstream of the throttling valve (5), the pressure sensor (6) and the temperature sensor (7) are positioned at the downstream of the throttling valve (5), the gas transmission pipeline further comprises a central controller (8) and a power supply which is electrically connected with the power line (22), and the pressure sensor (6), the temperature sensor (7) and the power supply are all in communication connection with the central controller (8).
9. The natural gas pipeline hydrate control system of claim 8, wherein: the power supply is a solar cell.
10. A natural gas pipeline hydrate control system as claimed in claim 8, wherein: the distance between the fluid heating rectifying joint and the throttle valve (5) is larger than the distance between the relative pressure sensor (6) and the throttle valve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220887396.6U CN217208247U (en) | 2022-04-16 | 2022-04-16 | Fluid heating rectifier joint and natural gas pipeline hydrate prevention and control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220887396.6U CN217208247U (en) | 2022-04-16 | 2022-04-16 | Fluid heating rectifier joint and natural gas pipeline hydrate prevention and control system |
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| Publication Number | Publication Date |
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| CN217208247U true CN217208247U (en) | 2022-08-16 |
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|---|---|---|---|
| CN202220887396.6U Expired - Fee Related CN217208247U (en) | 2022-04-16 | 2022-04-16 | Fluid heating rectifier joint and natural gas pipeline hydrate prevention and control system |
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| CN (1) | CN217208247U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114994288A (en) * | 2022-06-01 | 2022-09-02 | 重庆科技学院 | Comprehensive experiment system for preventing and controlling generation of oil and gas pipeline hydrate |
-
2022
- 2022-04-16 CN CN202220887396.6U patent/CN217208247U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114994288A (en) * | 2022-06-01 | 2022-09-02 | 重庆科技学院 | Comprehensive experiment system for preventing and controlling generation of oil and gas pipeline hydrate |
| CN114994288B (en) * | 2022-06-01 | 2023-12-12 | 重庆科技学院 | Comprehensive experiment system for preventing and controlling hydrate formation of oil and gas pipeline |
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