CN114623303A - Connecting device for LNG tank car and LNG tank car pipeline - Google Patents
Connecting device for LNG tank car and LNG tank car pipeline Download PDFInfo
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- CN114623303A CN114623303A CN202210175545.0A CN202210175545A CN114623303A CN 114623303 A CN114623303 A CN 114623303A CN 202210175545 A CN202210175545 A CN 202210175545A CN 114623303 A CN114623303 A CN 114623303A
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- valve
- dry
- flange plate
- pipe
- safety valve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C3/00—Vessels not under pressure
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention discloses a connecting device for an LNG tank wagon and an LNG tank wagon pipeline, wherein the connecting device comprises: the dry-type quick connector male head comprises a connecting section, a flange plate and a cavity, one end of the connecting section is fixedly connected with the flange plate, one end of the connecting section, far away from the flange plate, is used for being in adaptive connection with a dry-type quick connector female head, the flange plate is used for being connected with an LNG tank car, the cavity penetrates through the connecting section and the flange plate along the axis direction of the connecting section, and a mounting hole is formed in the side wall of the flange plate; and the safety valve is adaptive to the mounting hole and is communicated with the cavity in a sealing way. According to the invention, the safety valve is arranged on the male head of the dry-type quick connector, so that the safety risk caused by overpressure of the dry-type connector and a tank car tail end pipeline after loading and unloading are avoided in the automatic loading process.
Description
Technical Field
The invention relates to the technical field of LNG (liquefied natural gas), and further relates to a connecting device for an LNG tank wagon and an LNG tank wagon pipeline.
Background
LNG (liquefied Natural gas) is highly popular among various countries as a safe, clean, and efficient energy source. With the rapid development of the LNG industry in China, the traditional pipeline transportation mode is not enough to meet the requirements of a large number of small and medium-sized users. LNG tankers, because of their great flexibility and economy, have been used as the primary transport means for each receiving station to make up for the deficiencies of pipeline transportation modes. The loading and unloading arm is used as an intermediate device for loading and unloading the tank car and plays a role in determining the loading and unloading speed of the tank car.
At present, the LNG tank wagon loading and unloading truck is mainly connected with the tank wagon through a loading and unloading truck arm (or a low-temperature hose) manually. With the improvement of the industry level, the LNG loading field begins to develop towards automation and intellectualization. The automatic and intelligent loading mode is a development trend of future LNG tank car loading. The tank car generally adopts a standard container flange as a connecting interface with an LNG loading and unloading arm (or a low-temperature hose), but the automatic connection of the loading and unloading arm cannot be realized by a traditional flange connecting mode. Therefore, how to improve the technical defects existing in the LNG tanker connection method in the prior art is always a problem to be solved by ordinary technicians in the field.
Disclosure of Invention
In view of the above technical problems, an object of the present invention is to provide a connection device for an LNG tanker and an LNG tanker pipeline, which can avoid safety risks caused by overpressure in a dry-type quick connector and a pipeline at the end of the tanker after loading and unloading in an automated loading process by providing a safety valve on the dry-type quick connector male.
In order to accomplish the above object, the present invention provides a coupling device for an LNG tanker, comprising:
the dry-type quick connector male head comprises a connecting section, a flange plate and a cavity, one end of the connecting section is fixedly connected with the flange plate, one end of the connecting section, far away from the flange plate, is used for being in adaptive connection with a dry-type quick connector female head, the flange plate is used for being connected with an LNG tank car, the cavity penetrates through the connecting section and the flange plate along the axis direction of the connecting section, and a mounting hole is formed in the side wall of the flange plate;
and the safety valve is adaptive to the mounting hole and is communicated with the cavity in a sealing way.
In some embodiments, further comprising:
one end of the dry-type quick joint female head is in adaptive sealing connection with one end, far away from the flange, of the connecting section, and the other end of the dry-type quick joint female head is used for being connected with an external pipeline.
In some embodiments, the dry quick connector male is a standard dry quick connector male and the dry quick connector female is a standard dry quick connector female adapted to the dry quick connector male.
In some embodiments, the connection end of the safety valve is provided with an external thread, the inner wall of the mounting hole is provided with an internal thread, and the safety valve is fittingly mounted on the mounting hole.
In some embodiments, the safety valve is a low-temperature safety valve, the connecting end of the safety valve is provided with an NPT external thread, and the inner wall of the mounting hole is provided with an NPT internal thread.
According to another aspect of the present invention, the present invention further provides an LNG tanker pipeline for connecting with a tanker storage tank, comprising the connecting device for an LNG tanker as described in any one of the above, further comprising:
one end of the gas phase pipe is connected with the tank car storage tank, and the other end of the gas phase pipe is in adaptive connection with the first flange plate;
one end of the liquid supply pipe is connected with the tank wagon storage tank, and the other end of the liquid supply pipe is in adaptive connection with the second flange plate;
and one end of the pressure boost liquid phase pipe is connected with the tank wagon storage tank, and the other end of the pressure boost liquid phase pipe is in adaptive connection with a third flange plate.
In some embodiments, further comprising:
an emptying pipe;
a first safety valve arranged on the first flange plate is communicated with the emptying pipe;
a second safety valve arranged on the second flange plate is communicated with the emptying pipe;
and a third safety valve arranged on the third flange disc is communicated with the emptying pipe.
In some embodiments, further comprising:
and the inlet end of the stop valve is respectively connected with the first safety valve, the second safety valve and the third safety valve, and the outlet end of the stop valve is connected with the emptying pipe.
In some embodiments, further comprising:
one end of the first manual stop valve is connected with the gas phase pipe, and the other end of the first manual stop valve is connected with the emptying pipe through a first stop valve;
one end of the second manual stop valve is connected with the liquid supply pipe, and the other end of the second manual stop valve is connected with the emptying pipe through a second stop valve;
and one end of the third manual stop valve is connected with the pressurizing liquid phase pipe, and the other end of the third manual stop valve is connected with the pressurizing liquid phase pipe through the third stop valve.
In some embodiments, further comprising:
one end of the first emergency cut-off valve is connected with the gas phase pipe, and the other end of the first emergency cut-off valve is connected with the first manual cut-off valve;
one end of the second emergency cut-off valve is connected with the liquid supply pipe, and the other end of the second emergency cut-off valve is connected with the second manual cut-off valve;
and one end of the third emergency cut-off valve is connected with the pressurizing liquid phase pipe, and the other end of the third emergency cut-off valve is connected with the third manual cut-off valve.
Compared with the prior art, the connecting device for the LNG tank wagon and the LNG tank wagon pipeline provided by the invention have the following beneficial effects:
1. according to the connecting device for the LNG tank wagon, due to the traditional flange connection mode, automatic connection of a loading arm cannot be achieved, automation of the LNG tank wagon is possible due to the presence of the dry-type low-temperature quick connector, if the dry-type low-temperature quick connector is directly connected with the LNG tank wagon, a closed space is formed between the dry-type connector and a stop valve at the tail end of the tank wagon after loading and unloading are finished, overpressure can be caused to a pipeline at the connecting section due to expansion of residual low-temperature liquid, and although a manual emptying valve can be arranged on the LNG tank wagon, misoperation and operation forgetting are possible, and certain risks exist; through set up the public head of dry-type quick-operation joint on the LNG tank wagon, provide the connection guarantee for LNG tank wagon intelligence loading and unloading car, set up the relief valve between public head of dry-type quick-operation joint and the terminal stop valve of LNG tank wagon, raffinate gasification when avoiding both ends to seal causes this section pipeline superpressure.
2. According to the connecting device for the LNG tank wagon, the safety valve can be directly connected with the dry-type quick connector male head through the threaded hole, the on-site pipeline punching, welding and transformation are avoided, the transformation efficiency of the existing tank wagon is improved, and meanwhile the cost is saved.
3. According to the LNG tank car pipeline provided by the invention, the dry-type quick connector male heads are respectively arranged at the pressurization liquid phase port, the liquid supply port and the gas phase port, so that the quick connection of the three ports can be realized, the safety valves on the dry-type quick connector male heads at the pressurization liquid phase port, the liquid supply port and the gas phase port are connected in parallel and gathered to the emptying pipeline with a smaller caliber, the transformation cost is low, and the efficiency is high; set up manual stop valve on relief valve manifold road, close this valve earlier when leaking in the relief valve damages, accomplish this and fill the dress after, the damage relief valve is changed to the machine selection, and this structure not only is applicable to intelligent loading, also is applicable to the manual connection scheme who adopts the quick-operation joint loading.
Drawings
The above features, technical features, advantages and modes of realisation of the present invention will be further described in the following detailed description of preferred embodiments thereof, which is to be read in connection with the accompanying drawings.
Fig. 1 is a schematic structural view of a coupling device for an LNG tanker according to a preferred embodiment of the present invention;
fig. 2 is a schematic flow diagram of an LNG tanker pipeline according to a preferred embodiment of the present invention.
The reference numbers illustrate:
the dry type pipe bundle joint comprises a male head 1, a connecting section 2, a flange 3, a cavity 4, a mounting hole 5, a tank car storage tank 6, a gas phase pipe 7, a liquid supply pipe 8, a pressure increasing liquid phase pipe 9, a vent pipe 10, a first flange 11, a first safety valve 12, a second flange 13, a second safety valve 14, a third flange 15, a third safety valve 16, a stop valve 17, a first manual stop valve 18, a first stop valve 19, a second manual stop valve 20, a second stop valve 21, a third manual stop valve 22, a third stop valve 23, a first emergency stop valve 24, a second emergency stop valve 25 and a third emergency stop valve 26.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
For the sake of simplicity, only the parts relevant to the invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.
In one embodiment, referring to fig. 1 of the specification, the present invention provides a coupling device for an LNG tanker, comprising: a dry-type quick connector male head 1 and a safety valve. LNG is an abbreviation for liquefied natural gas (liquefied natural gas), and an LNG carrier vehicle is simply referred to as an LNG tanker. Public head 1 of dry-type quick-operation joint includes linkage segment 2, ring flange 3 and cavity 4, and the right-hand member and the ring flange 3 fixed connection of linkage segment 2, the left end of linkage segment 2 be used for with the female first adaptation of dry-type quick-operation joint be connected, ring flange 3 be used for being connected with the LNG tank wagon, cavity 4 along the axis direction run-through linkage segment 2 and ring flange 3 of linkage segment 2, be provided with mounting hole 5 on the lateral wall of ring flange 3. The safety valve is arranged on the mounting hole 5 in a matched mode and is communicated with the cavity 4 in a sealing mode. Wherein, the relief valve can be the low temperature safety valve, and the link of relief valve is provided with the external screw thread, and the inner wall of mounting hole 5 is provided with the internal thread, and the relief valve adaptation is installed on mounting hole 5. For example: the link of relief valve is provided with the NPT external screw thread, and the inner wall of mounting hole 5 is provided with the NPT internal thread.
In the embodiment, due to the traditional flange connection mode, automatic connection of a loading arm cannot be realized, and due to the occurrence of a dry-type low-temperature quick connector, the LNG loading and unloading vehicle can be automatically realized; the dry-type quick connector male 1 is arranged on the LNG tank wagon, so that connection guarantee is provided for the intelligent loading and unloading vehicle of the LNG tank wagon, and the safety valve is arranged between the dry-type quick connector male 1 and the stop valve at the tail end of the LNG tank wagon, so that overpressure of the pipeline at the section caused by gasification of residual liquid when two ends are closed is avoided; the relief valve can directly be connected with the male head 1 of dry-type quick-operation joint through the screw hole, avoids the on-the-spot pipeline to punch the welding transformation, has improved the transformation efficiency to current tank wagon, practices thrift the cost simultaneously.
In one embodiment, referring to fig. 1 of the specification, the present invention provides a coupling device for an LNG tanker, comprising: male dry quick-operation joint 1, relief valve and female dry quick-operation joint. Male head 1 of dry-type quick-operation joint includes linkage segment 2, ring flange 3 and cavity 4, and the right-hand member and the ring flange 3 fixed connection of linkage segment 2, the left end and the female first adaptation of dry-type quick-operation joint of linkage segment 2 are connected, and ring flange 3 is used for being connected with the LNG tank wagon, and cavity 4 is provided with mounting hole 5 along the axis direction run-through linkage segment 2 and ring flange 3 of linkage segment 2 on the lateral wall of ring flange 3. The safety valve is arranged on the mounting hole 5 in a matched mode and is communicated with the cavity 4 in a sealing mode. The other end of the dry-type quick coupling female head is used for being connected with an external pipeline, and the external pipeline can be connected with an LNG filling station. The dry-type quick connector male head 1 is a standard dry-type quick connector male head, and the dry-type quick connector female head is a standard dry-type quick connector female head matched with the dry-type quick connector male head 1.
In accordance with another aspect of the present invention, and with reference to fig. 2 of the specification, the present invention further provides, in accordance with the above-described embodiment, an LNG tanker pipeline for connection to a tanker tank 6, comprising: a gas phase pipe 7, a liquid supply pipe 8, a tank car storage tank 9 and an emptying pipe 10. Tank wagon storage tank 6 is used for saving LNG, and the one end and the tank wagon storage tank 6 of gas phase pipe 7 are connected, and the other end and the 11 adaptation of first ring flange of gas phase pipe 7 are connected, and the first relief valve 12 that sets up on the 11 intercommunication of first ring flange and blow-down pipe 10. One end of the liquid supply pipe 8 is connected with the tank wagon storage tank 6, the other end of the liquid supply pipe 8 is connected with the second flange 13 in an adaptive mode, and a second safety valve 14 arranged on the second flange 13 is communicated with the vent pipe 10. One end of the pressure increasing liquid phase pipe 9 is connected with the tank car storage tank 6, the other end of the pressure increasing liquid phase pipe 9 is connected with a third flange 15 in a matching mode, and a third safety valve 16 arranged on the third flange 15 is communicated with the vent pipe 10. The flare 10 may be provided with a small bore, for example: the caliber of the emptying pipe 10 is DN8, DN10, DN12 and the like.
In this embodiment, pressure boost liquid phase pipe 9, liquid feed pipe 8, gaseous phase pipe 7 respectively set up the public head 1 of dry-type quick-operation joint, can realize the high-speed joint of three interface, and the relief valve on the public head 1 of dry-type quick-operation joint of pressure boost liquid phase pipe 9, liquid feed pipe 8, gaseous phase pipe 7 department is parallelly connected to be gathered to the blow-down pipe 10 that the bore is less, reforms transform with low costs, and is efficient.
It should be noted that the first flange 11, the second flange 13, and the third flange 15 are all the same as the flange 3 in the above embodiment, and the first relief valve 12, the second relief valve 14, and the third relief valve 16 are also all the same as the relief valves in the above embodiment, and their connection modes are also the same, and the nomenclature is different here only for distinguishing their use in different pipelines.
In one embodiment, referring to fig. 2 of the specification, on the basis of the above embodiment, the present invention provides an LNG tanker pipeline, further comprising: a shut-off valve 17, a first manual shut-off valve 18, a second manual shut-off valve 20 and a third manual shut-off valve 22. The inlet end of the stop valve 17 is respectively connected with the first safety valve 12, the second safety valve 14 and the third safety valve 16, and the outlet end of the stop valve 17 is connected with the emptying pipe 10. One end of the first manual stop valve 18 is connected with the gas phase pipe 7, and the other end of the first manual stop valve 18 is connected with the emptying pipe 10 through a first stop valve 19. One end of the second manual stop valve 20 is connected with the liquid supply pipe 8, and the other end of the second manual stop valve 20 is connected with the emptying pipe 10 through a second stop valve 21. One end of the third manual stop valve 22 is connected to the pressure-increasing liquid phase pipe 9, and the other end of the third manual stop valve 22 is connected to the pressure-increasing liquid phase pipe 9 through the third stop valve 23.
In the embodiment, when the tank car is in overpressure with the pipeline at the external connecting section, the pressure can be quickly released through the safety valve, the manual stop valve is arranged on the safety valve collecting pipeline, the valve is closed when the safety valve is damaged and internally leaked, and the damaged safety valve is replaced by selecting the machine after the filling is completed; set up the relief valve and avoided stop valve and manual stop valve to close simultaneously, and when the operator forgets again to arrange the air, cause the excess pressure that the remaining medium of pipeline between stop valve and the manual stop valve arouses by thermal expansion, first ring flange 11, second ring flange 13, third ring flange 15 can with the direct flange joint of LNG tank wagon, with the direct threaded connection of relief valve, the work progress is simple, and is with low costs, and this structure not only is applicable to intelligent loading, also is applicable to the manual connection scheme who adopts the quick-operation joint loading.
In one embodiment, referring to fig. 2 of the specification, on the basis of the above embodiment, the present invention provides an LNG tanker pipeline, further comprising: a first quick action emergency valve 24, a second quick action emergency valve 25, and a third quick action emergency valve 26. One end of the first quick action emergency valve 24 is connected to the gas phase pipe 7, and the other end of the first quick action emergency valve 24 is connected to the first manual shutoff valve 18. One end of the second quick action emergency valve 25 is connected to the liquid supply pipe 8, and the other end of the second quick action emergency valve 25 is connected to the second manual cut-off valve 20. One end of the third quick action emergency valve 26 is connected to the pressure-increasing liquid phase pipe 9, and the other end of the third quick action emergency valve 26 is connected to the third manual cut-off valve 22. Through set up emergency cut-off valve respectively at pressure boost liquid phase pipe 9, feed pipe 8, gaseous phase pipe 7, when meetting emergency, disconnection pipeline that can be timely. This structure not only can reduce the transformation cost and the time to current tank wagon, compromise the safe in utilization and the loading and unloading car efficiency of LNG tank wagon simultaneously.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or recited in detail in a certain embodiment.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (10)
1. A coupling device for an LNG tanker, comprising:
the dry-type quick connector male head comprises a connecting section, a flange plate and a cavity, one end of the connecting section is fixedly connected with the flange plate, one end of the connecting section, far away from the flange plate, is used for being in adaptive connection with a dry-type quick connector female head, the flange plate is used for being connected with an LNG tank car, the cavity penetrates through the connecting section and the flange plate along the axis direction of the connecting section, and a mounting hole is formed in the side wall of the flange plate;
and the safety valve is adaptive to the mounting hole and is communicated with the cavity in a sealing way.
2. The coupling device for an LNG tanker according to claim 1, further comprising:
one end of the dry-type quick joint female head is in adaptive sealing connection with one end, far away from the flange, of the connecting section, and the other end of the dry-type quick joint female head is used for being connected with an external pipeline.
3. Connection arrangement for an LNG tanker according to claim 2,
the dry-type quick connector male head is a standard dry-type quick connector male head, and the dry-type quick connector female head is a standard dry-type quick connector female head matched with the dry-type quick connector male head.
4. Connection arrangement for an LNG tanker according to claim 3,
the safety valve is characterized in that external threads are arranged at the connecting end of the safety valve, internal threads are arranged on the inner wall of the mounting hole, and the safety valve is mounted on the mounting hole in an adaptive mode.
5. Connection arrangement for an LNG tanker according to claim 4,
the safety valve is a low-temperature safety valve, the connecting end of the safety valve is provided with an NPT external thread, and the inner wall of the mounting hole is provided with an NPT internal thread.
6. An LNG tanker pipeline for connection to a tanker storage tank, comprising the connection device for the LNG tanker of any of claims 1 to 5, further comprising:
one end of the gas phase pipe is connected with the tank car storage tank, and the other end of the gas phase pipe is in adaptive connection with the first flange plate;
one end of the liquid supply pipe is connected with the tank wagon storage tank, and the other end of the liquid supply pipe is in adaptive connection with the second flange plate;
and one end of the pressurized liquid phase pipe is connected with the tank car storage tank, and the other end of the pressurized liquid phase pipe is in adaptive connection with a third flange plate.
7. The LNG tanker pipeline of claim 6, further comprising:
an emptying pipe;
a first safety valve arranged on the first flange plate is communicated with the emptying pipe;
a second safety valve arranged on the second flange plate is communicated with the emptying pipe;
and a third safety valve arranged on the third flange is communicated with the emptying pipe.
8. The LNG tanker pipeline of claim 7, further comprising:
and the inlet end of the stop valve is respectively connected with the first safety valve, the second safety valve and the third safety valve, and the outlet end of the stop valve is connected with the emptying pipe.
9. The LNG tanker pipeline according to claim 8, further comprising:
one end of the first manual stop valve is connected with the gas phase pipe, and the other end of the first manual stop valve is connected with the emptying pipe through a first stop valve;
a second manual stop valve, one end of which is connected with the liquid supply pipe, the second manual stop valve
The other end of the second manual stop valve is connected with the emptying pipe through a second stop valve;
and one end of the third manual stop valve is connected with the pressurizing liquid phase pipe, and the other end of the third manual stop valve is connected with the pressurizing liquid phase pipe through the third stop valve.
10. The LNG tanker pipeline according to claim 9, further comprising:
one end of the first emergency cut-off valve is connected with the gas phase pipe, and the other end of the first emergency cut-off valve is connected with the first manual cut-off valve;
one end of the second emergency cut-off valve is connected with the liquid supply pipe, and the other end of the second emergency cut-off valve is connected with the second manual cut-off valve;
and one end of the third emergency cut-off valve is connected with the pressurizing liquid phase pipe, and the other end of the third emergency cut-off valve is connected with the third manual cut-off valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210175545.0A CN114623303A (en) | 2022-02-24 | 2022-02-24 | Connecting device for LNG tank car and LNG tank car pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210175545.0A CN114623303A (en) | 2022-02-24 | 2022-02-24 | Connecting device for LNG tank car and LNG tank car pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN114623303A true CN114623303A (en) | 2022-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210175545.0A Pending CN114623303A (en) | 2022-02-24 | 2022-02-24 | Connecting device for LNG tank car and LNG tank car pipeline |
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| CN (1) | CN114623303A (en) |
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| CN201475568U (en) * | 2009-08-25 | 2010-05-19 | 中国石化集团江汉石油管理局第四机械厂 | Multi-channel high pressure joint |
| WO2014117611A1 (en) * | 2013-01-30 | 2014-08-07 | 周纪昌 | Quick connector with flange for split air conditioner |
| CN204254248U (en) * | 2014-11-24 | 2015-04-08 | 杭州福斯达实业集团有限公司 | LNG entrucking is prized |
| CN204756248U (en) * | 2015-06-23 | 2015-11-11 | 石家庄安瑞科气体机械有限公司 | Fast -assembling auto -lock on -off valve disk seat |
| CN205350469U (en) * | 2015-12-15 | 2016-06-29 | 林秀程 | Novel full air relief valve door |
| CN107883185A (en) * | 2017-07-04 | 2018-04-06 | 上海新奥新能源技术有限公司 | LNG feeders and its workflow, LNG air supply systems |
| CN109237044A (en) * | 2018-10-31 | 2019-01-18 | 东莞市华汇精密机械有限公司 | A kind of dry-type encapsulated device for twin-screw dry powder pump |
| CN109268676A (en) * | 2018-10-16 | 2019-01-25 | 武汉三江航天远方科技有限公司 | Break protection type low temperature dry type quick coupling |
| CN208620055U (en) * | 2018-06-14 | 2019-03-19 | 蚌埠艾普压缩机制造有限公司 | A kind of LNG gasification recompression device |
| CN209655267U (en) * | 2019-01-15 | 2019-11-19 | 江苏扬帆船舶设备有限公司 | A kind of main boiler safety valve protection device |
| CN111336294A (en) * | 2020-04-14 | 2020-06-26 | 中船重工鹏力（南京）超低温技术有限公司 | Explosion-proof safety valve of KF flange interface |
| CN113217809A (en) * | 2020-01-21 | 2021-08-06 | 中国石油化工股份有限公司 | Dry-type quick joint for loading and unloading LNG (liquefied natural gas) car tank car |
| CN215862866U (en) * | 2021-08-27 | 2022-02-18 | 铜川市天然气有限公司 | LNG loading and unloading vehicle system |
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| WO2014117611A1 (en) * | 2013-01-30 | 2014-08-07 | 周纪昌 | Quick connector with flange for split air conditioner |
| CN204254248U (en) * | 2014-11-24 | 2015-04-08 | 杭州福斯达实业集团有限公司 | LNG entrucking is prized |
| CN204756248U (en) * | 2015-06-23 | 2015-11-11 | 石家庄安瑞科气体机械有限公司 | Fast -assembling auto -lock on -off valve disk seat |
| CN205350469U (en) * | 2015-12-15 | 2016-06-29 | 林秀程 | Novel full air relief valve door |
| CN107883185A (en) * | 2017-07-04 | 2018-04-06 | 上海新奥新能源技术有限公司 | LNG feeders and its workflow, LNG air supply systems |
| CN208620055U (en) * | 2018-06-14 | 2019-03-19 | 蚌埠艾普压缩机制造有限公司 | A kind of LNG gasification recompression device |
| CN109268676A (en) * | 2018-10-16 | 2019-01-25 | 武汉三江航天远方科技有限公司 | Break protection type low temperature dry type quick coupling |
| CN109237044A (en) * | 2018-10-31 | 2019-01-18 | 东莞市华汇精密机械有限公司 | A kind of dry-type encapsulated device for twin-screw dry powder pump |
| CN209655267U (en) * | 2019-01-15 | 2019-11-19 | 江苏扬帆船舶设备有限公司 | A kind of main boiler safety valve protection device |
| CN113217809A (en) * | 2020-01-21 | 2021-08-06 | 中国石油化工股份有限公司 | Dry-type quick joint for loading and unloading LNG (liquefied natural gas) car tank car |
| CN111336294A (en) * | 2020-04-14 | 2020-06-26 | 中船重工鹏力（南京）超低温技术有限公司 | Explosion-proof safety valve of KF flange interface |
| CN215862866U (en) * | 2021-08-27 | 2022-02-18 | 铜川市天然气有限公司 | LNG loading and unloading vehicle system |
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