CN111473168A - Detachable low-temperature fluid scabbard connecting kit - Google Patents

Detachable low-temperature fluid scabbard connecting kit Download PDF

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Publication number
CN111473168A
CN111473168A CN202010315430.8A CN202010315430A CN111473168A CN 111473168 A CN111473168 A CN 111473168A CN 202010315430 A CN202010315430 A CN 202010315430A CN 111473168 A CN111473168 A CN 111473168A
Authority
CN
China
Prior art keywords
scabbard
sealing
pipe
wall
sword
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010315430.8A
Other languages
Chinese (zh)
Inventor
任陈玲
韩伶俐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hefei Daren Electromechanical Technology Co ltd
Original Assignee
Hefei Daren Electromechanical Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hefei Daren Electromechanical Technology Co ltd filed Critical Hefei Daren Electromechanical Technology Co ltd
Priority to CN202010315430.8A priority Critical patent/CN111473168A/en
Publication of CN111473168A publication Critical patent/CN111473168A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F16L9/00—Rigid pipes
    • F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/062—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces characterised by the geometry of the seat
    • 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
    • F16L59/00—Thermal insulation in general
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
    • 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
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum
    • F16L59/065—Arrangements using an air layer or vacuum using vacuum

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

The invention discloses a detachable low-temperature fluid scabbard connecting kit, wherein a scabbard assembly comprises a scabbard pipe and a connecting sleeve, self-tapping threads are arranged on the outer wall of one end of the scabbard pipe, the connecting sleeve is sleeved outside the first sealing section of the scabbard pipe, a sealing mounting groove extending around the scabbard pipe in an annular mode is arranged on one side, facing the first sealing section, of the connecting sleeve, internal threads are arranged on the outer side wall of the sealing mounting groove, a sealing platform matched with the self-tapping threads is arranged on the inner wall of one end of a scabbard pipe of the scabbard assembly, the inner diameter of the sealing platform is gradually reduced towards the direction. Through the dismantled and assembled low-temperature fluid sword sheath of above-mentioned optimal design connects the external member, through sword subassembly and sheath subassembly integrated design, realizes through the screw thread installation that sword pipe and sheath pipe one end sealing ring are sealed, and the other end passes through self tapping screw thread and realizes that the metal is sealed to the realization installation is quick, and guarantees sealed effect, effective control connects the heat leakage quantity of external member.

Description

Detachable low-temperature fluid scabbard connecting kit
Technical Field
The invention relates to the field of low-temperature pipelines in low-temperature engineering, in particular to a detachable low-temperature fluid scabbard connecting kit.
Background
Cryogenic fluids generally refer to media having a saturation temperature below 120K, and the fluid state is not limited to gaseous, liquid, supercritical forms. The fluid is mainly liquid oxygen, liquid nitrogen, liquid hydrogen and liquid helium, but is not limited to other cryogenic medium fluids.
The working pressure of the low-temperature pipeline in the low-temperature engineering is within a certain range, and the maximum working pressure is 150 PSIG. Generally, a low-temperature pipeline, which is also called a high-vacuum multi-layer heat-insulating pipeline, is generally composed of a sword pipe and an outer pipe. The space formed between the rapier and the outer tube is called "interlayer". The interlayer is formed by wrapping multiple layers of heat-insulating materials, and high vacuum is established between the interlayers. In the field of cryogenic engineering, high-vacuum multi-layer heat-insulating pipelines are mostly adopted in the process of delivering cryogenic liquid (such as liquid oxygen, liquid nitrogen, liquid hydrogen, liquid helium and the like) to users, and particularly, the high-vacuum multi-layer heat-insulating pipelines cannot be separated in the process of delivering the cryogenic liquid and the liquid helium under the condition of low critical temperature. A "cold box" is used in a facility for producing cryogenic fluid that is to be delivered to a user for use.
Therefore, since the high-vacuum multi-layer heat-insulating piping structure is generally complicated, the low-temperature piping between the cold box (the outlet for the low-temperature fluid) and the user side cannot be attached and detached. Disassembly must be destructive if necessary. When the distance between the cold box and the user side is long, such as tens of meters or even hundreds of meters, the low-temperature pipeline at this time needs to be manufactured on site. For manufacturers of low-temperature pipelines, the efficiency of on-site manufacture is far lower than that of in-plant manufacture due to different production conditions. There is also the same problem of disassembly and assembly as described in the previous paragraph. Meanwhile, as the saturation temperature of the cryogenic fluid is far lower than the ambient temperature, the detachable connection also needs to solve the problem of heat leakage per se, the common butt joint mode can cause larger heat leakage, and the heat leakage can cause the temperature rise of the cryogenic fluid or the loss of the cryogenic liquid.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a detachable cryogenic fluid scabbard connecting kit.
The invention provides a detachable low-temperature fluid scabbard connecting kit, which comprises: a sword assembly and a sheath assembly;
the sword assembly comprises a sword pipe and a connecting sleeve, wherein one end of the sword pipe is provided with a first sealing section, the outer wall of the first sealing section is provided with self-tapping threads, the connecting sleeve is sleeved outside the sword pipe away from the first sealing section, one side of the connecting sleeve, which faces the first sealing section, is provided with a sealing installation groove which extends annularly around the sword pipe, a sealing ring is arranged in the sealing installation groove, the sealing ring is abutted against the inner side wall of the sealing installation groove, and the outer side wall of the sealing installation groove is provided with;
the sheath subassembly includes the sheath pipe, and the sheath pipe both ends are equipped with the sealed section of second and linkage segment respectively, the sealed section inner wall of second be equipped with the self tapping screw-thread fit's of first sealed section sealed platform, the direction of sealed intra-bench radial sheath pipe reduces gradually, the linkage segment with sealed mounting groove corresponds the setting, the linkage segment outer wall be equipped with through the internal thread with sealed mounting groove complex external screw thread.
Preferably, the sword pipe is provided with a nose sleeve, the nose sleeve is welded at one end, far away from the connecting sleeve, of the sword pipe, and the self-tapping threads are arranged on the outer wall of the nose sleeve.
Preferably, the connecting sleeve comprises a connector and a nut, the connector is welded on the outer wall of the sword pipe, the outer wall of the connector is provided with a first limiting protrusion and a second limiting protrusion, the first limiting protrusion and the second limiting protrusion are sequentially annularly arranged on the outer wall of the connector, the nut sleeve is arranged outside the connector and between the connector and the nut sleeve to form a sealing installation groove, the inner wall of the nut is provided with a clamping protrusion which is annularly arranged, and the clamping protrusion is located between the first limiting protrusion and the second limiting protrusion.
Preferably, the connector is further provided with a first clamping ring and a second clamping ring, and the outer wall of the connector is provided with a first clamping groove used for accommodating the first clamping ring and a second clamping groove used for accommodating the second clamping ring.
Preferably, the outer wall of the connector is further provided with a sealing groove for accommodating the sealing ring.
Preferably, the second seal section one end of sheath pipe is equipped with the nose and revolves the seat, and the sealed platform setting is revolved the seat inner wall at the nose.
Preferably, the nasal socket and the sheath are coaxially arranged.
Preferably, the nasal rotating seat is welded and fixed with the sheath tube.
According to the detachable low-temperature fluid scabbard connecting kit, a scabbard assembly comprises a scabbard pipe and a connecting sleeve, self-tapping threads are arranged on the outer wall of one end of the scabbard pipe, the connecting sleeve is sleeved outside the first sealing section of the scabbard pipe, a sealing mounting groove extending around the scabbard pipe in an annular mode is arranged on one side, facing the first sealing section, of the connecting sleeve, internal threads are arranged on the outer side wall of the sealing mounting groove, a sealing platform matched with the self-tapping threads is arranged on the inner wall of one end of a scabbard pipe of the scabbard assembly, the inner diameter of the sealing platform is gradually reduced towards the direction of. Through the dismantled and assembled low-temperature fluid sword sheath of above-mentioned optimal design connects the external member, through sword subassembly and sheath subassembly integrated design, realizes through the screw thread installation that sword pipe and sheath pipe one end sealing ring are sealed, and the other end passes through self tapping screw thread and realizes that the metal is sealed to the realization installation is quick, and guarantees sealed effect, effective control connects the heat leakage quantity of external member.
Drawings
FIG. 1 is a schematic view of the construction of the sheath assembly of a removable cryogenic fluid scabbard connection kit of the present invention.
FIG. 2 is a schematic view of the structure of the sword assembly of the detachable cryogenic fluid sword sheath connection kit of the present invention.
Fig. 3 is a schematic diagram of the structure of the removable cryogenic fluid scabbard connection kit according to the present invention.
Detailed Description
Fig. 1 to 3 show a schematic structural view of a sheath assembly of a removable cryogenic fluid scabbard connection kit according to the present invention in fig. 1, fig. 2 shows a schematic structural view of a scabbard assembly of a removable cryogenic fluid scabbard connection kit according to the present invention in fig. 2, and fig. 3 shows a schematic structural view of a mating structure of a removable cryogenic fluid scabbard connection kit according to the present invention in fig. 3.
Referring to fig. 1 to 3, the present invention provides a removable cryogenic fluid scabbard connection kit, comprising: a sword assembly and a sheath assembly;
the sword component comprises a sword pipe 1 and a connecting sleeve, wherein one end of the sword pipe 1 is provided with a first sealing section, the outer wall of the first sealing section is provided with self-tapping threads, the connecting sleeve is sleeved outside the first sealing section away from the sword pipe 1, one side of the connecting sleeve, which faces the first sealing section, is provided with a sealing installation groove which extends annularly around the sword pipe 1, a sealing ring 3 is arranged in the sealing installation groove, the sealing ring 3 is abutted against the inner side wall of the sealing installation groove, and the outer side wall of the sealing installation groove is provided;
the sheath subassembly includes sheath pipe 2, and 2 both ends of sheath pipe are equipped with the sealed section of second and linkage segment respectively, the sealed section inner wall of second be equipped with the self tapping screw-thread fit's of first sealed section sealed platform, the sealed bench internal diameter reduces to the direction of sheath pipe 2 gradually, the linkage segment with sealed mounting groove corresponds the setting, the linkage segment outer wall be equipped with through the internal thread with sealed mounting groove complex external screw thread.
In the concrete installation of dismantled and assembled low temperature fluid sword sheath connection external member of this embodiment, the first seal section one end of sword pipe is followed sheath pipe link end one end and is inserted in the sheath pipe, the adapter sleeve of sword pipe inserts in the seal installation groove of sheath pipe link section, the thread mounting is passed through with the sword pipe adapter sleeve to sheath pipe link section for the sealing ring is sealed at the deformation between adapter sleeve and connecting portion, at this in-process, the first seal section of sword pipe passes through self tapping screw thread to the seal land tapping of sheath pipe second seal section, realize that the two metal is sealed.
In this embodiment, dismantled and assembled cryogenic fluid sword sheath that provides connects external member, sword subassembly include sword pipe and adapter sleeve, and sword pipe one end outer wall is equipped with self tapping screw thread, and the adapter sleeve cover is established outside the first sealed section of sword pipe is kept away from, and the adapter sleeve is equipped with around the sealed mounting groove of sword pipe annular extension towards first sealed section one side, sealed mounting groove lateral wall is equipped with the internal thread, and the sheath pipe one end inner wall of sheath subassembly is equipped with the sealed platform with self tapping screw thread complex, and the sealed platform internal diameter reduces gradually to the direction of sheath pipe, the sheath pipe other end with sealed mounting groove correspond set up and with sealed mounting groove screw thread complex. Through the dismantled and assembled low-temperature fluid sword sheath of above-mentioned optimal design connects the external member, through sword subassembly and sheath subassembly integrated design, realizes through the screw thread installation that sword pipe and sheath pipe one end sealing ring are sealed, and the other end passes through self tapping screw thread and realizes that the metal is sealed to the realization installation is quick, and guarantees sealed effect, effective control connects the heat leakage quantity of external member.
In the specific implementation mode of sword subassembly, be equipped with nose cover 4 on sword pipe 1, nose cover 4 welds in sword pipe 1 and keeps away from the adapter sleeve one end, and self tapping screw thread sets up at nose cover 4 outer walls.
In other specific embodiments, the connecting sleeve comprises a connector 5 and a nut 6, the connector 5 is welded on the outer wall of the sword pipe 1, the outer wall of the connector 5 is provided with a first limiting bulge and a second limiting bulge, the first limiting bulge and the second limiting bulge are sequentially annularly arranged on the outer wall of the connector 5, the nut 6 is sleeved outside the connector 5 and forms a sealing installation groove with the connector 5, the inner wall of the nut 6 is provided with an annularly arranged clamping bulge, and the clamping bulge is located between the first limiting bulge and the second limiting bulge; the nut is clamped between the first limiting protrusion and the second limiting protrusion through the clamping protrusion, and installation reliability is guaranteed.
In a further specific embodiment, the connector 5 is further provided with a first snap ring 71 and a second snap ring 72, and the outer wall of the connector 5 is provided with a first clamping groove for accommodating the first snap ring 71 and a second clamping groove for accommodating the second snap ring 72; in specific installation, at first the second snap ring that will be close to sealing ring one side is installed in the second draw-in groove, then with the nut suit in the connector outside, at last clamps first snap ring in first draw-in groove again to carry on spacingly from both sides to the joint of nut through first snap ring and second snap ring.
In a specific installation mode of the sealing ring, the outer wall of the connector 5 is also provided with a sealing groove for accommodating the sealing ring; the sealing ring is limited through the sealing groove, and the sealing reliability is guaranteed.
In the concrete design mode of sheath subassembly, the sealed section one end of second of sheath pipe 2 is equipped with the pronounce seat 8, and the sealed platform setting is revolved 8 inner walls at the pronounce.
In a specific embodiment, the nasal socket 8 and the sheath tube 2 are coaxially arranged, and in a specific installation mode, the nasal socket 8 and the sheath tube 2 are fixedly welded.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (8)

1. A removable cryogenic fluid scabbard connection kit, comprising: a sword assembly and a sheath assembly;
the sword component comprises a sword pipe (1) and a connecting sleeve, wherein one end of the sword pipe (1) is provided with a first sealing section, the outer wall of the first sealing section is provided with self-tapping threads, the connecting sleeve is sleeved outside the first sealing section away from the sword pipe (1), one side of the connecting sleeve, which faces the first sealing section, is provided with a sealing installation groove which extends annularly around the sword pipe (1), a sealing ring (3) is arranged in the sealing installation groove, the sealing ring (3) is abutted against the inner side wall of the sealing installation groove, and the outer side wall of the sealing installation groove is provided with;
the sheath subassembly includes sheath pipe (2), and sheath pipe (2) both ends are equipped with the sealed section of second and linkage segment respectively, the sealed section inner wall of second be equipped with the self tapping screw-thread fit's of first sealed section sealed platform, the direction of sealed intra-bench radial sheath pipe (2) reduces gradually, the linkage segment with sealed mounting groove corresponds the setting, the linkage segment outer wall be equipped with through the internal thread with sealed mounting groove complex external screw thread.
2. A detachable cryogenic fluid scabbard connection kit according to claim 1, wherein a nose sleeve (4) is provided on the scabbard tube (1), the nose sleeve (4) is welded to an end of the scabbard tube (1) away from the connection sleeve, and a self-tapping thread is provided on an outer wall of the nose sleeve (4).
3. The removable low-temperature fluid scabbard connection kit according to claim 1, wherein the connection sleeve comprises a connector (5) and a nut (6), the connector (5) is welded on the outer wall of the scabbard pipe (1), the outer wall of the connector (5) is provided with a first limiting protrusion and a second limiting protrusion, the first limiting protrusion and the second limiting protrusion are sequentially arranged on the outer wall of the connector (5) in an annular mode, the nut (6) is sleeved on the outer portion of the connector (5) and forms a sealing installation groove with the connector (5), the inner wall of the nut (6) is provided with a clamping protrusion arranged in an annular mode, and the clamping protrusion is located between the first limiting protrusion and the second limiting protrusion.
4. A removable cryogenic fluid scabbard connection kit according to claim 3, wherein the connector (5) further comprises a first snap ring (71) and a second snap ring (72), and wherein the outer wall of the connector (5) comprises a first snap groove for receiving the first snap ring (71) and a second snap groove for receiving the second snap ring (72).
5. A removable cryogenic fluid scabbard connection kit according to claim 3, wherein the outer wall of the connector (5) is further provided with a sealing groove for accommodating the sealing ring (3).
6. The removable cryogenic fluid scabbard connection kit of claim 1, wherein the second sealing section of the scabbard tube (2) is provided at one end with a pronged seat (8), and the sealing platform is provided on the inner wall of the pronged seat (8).
7. A removable cryogenic fluid scabbard connection kit according to claim 6, wherein the nosespin base (8) and the scabbard tube (2) are coaxially arranged.
8. A removable cryogenic fluid scabbard connection kit according to claim 6, wherein the nosed screw seat (8) is welded to the scabbard tube (2).
CN202010315430.8A 2020-04-21 2020-04-21 Detachable low-temperature fluid scabbard connecting kit Pending CN111473168A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010315430.8A CN111473168A (en) 2020-04-21 2020-04-21 Detachable low-temperature fluid scabbard connecting kit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010315430.8A CN111473168A (en) 2020-04-21 2020-04-21 Detachable low-temperature fluid scabbard connecting kit

Publications (1)

Publication Number Publication Date
CN111473168A true CN111473168A (en) 2020-07-31

Family

ID=71754055

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010315430.8A Pending CN111473168A (en) 2020-04-21 2020-04-21 Detachable low-temperature fluid scabbard connecting kit

Country Status (1)

Country Link
CN (1) CN111473168A (en)

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