Post-weld heat treatment device for skid-mounted LNG (liquefied natural gas) station

Abstract

The utility model provides a postweld heat treatment device for a skid-mounted LNG (Liquefied Natural Gas) station, which relates to the technical field of skid-mounted LNG stations and comprises a skid-mounted LNG station, a base, an LNG station device and an L-shaped heat treatment device, and the L-shaped heat treatment device comprises an L-shaped mounting plate, an L-shaped clamping structure, an L-shaped radiation part, an L-shaped heat conduction mounting structure and a circulating cooling pipeline structure; the L-shaped heat treatment devices are inserted into the weld joint between the base and the LNG station device, the multiple L-shaped heat treatment devices can be adopted at the same time for heat treatment, and when the sizes of the L-shaped heat treatment devices are insufficient, the L-shaped heat treatment devices can be pushed to slide along the weld joint to complete heat treatment; heat treatment is achieved through heat radiated by the L-shaped radiation part, cooling liquid is introduced into the circulating cooling pipeline structure for rapid cooling after heat treatment, postweld heat treatment is better completed, and the device can be used for the welding seam of the skid-mounted LNG station, is flexible to operate and can conduct postweld heat treatment on the skid-mounted LNG stations of different sizes.

Description

Technical Field

[0001] This utility model relates to the field of skid-mounted LNG station technology, and in particular to a post-weld heat treatment device for skid-mounted LNG stations. Background Technology

[0002] The descriptions in this section provide background information relating to this disclosure and do not constitute prior art.

[0003] During the welding and manufacturing process of skid-mounted LNG stations, LNG station components and bases need to be welded together. The quality of the welding directly affects the performance and service life of the equipment. Post-weld heat treatment refers to the heat treatment process performed on the welded parts after welding, with the aim of eliminating residual welding stress and improving the microstructure and properties of the welded joint.

[0004] Skid-mounted LNG stations are large in size, making it inconvenient to use heat treatment furnaces. Furthermore, manufacturing dedicated heat treatment equipment based on the distribution of weld gaps is costly. There is a lack of a device that can be inserted between the weld gaps of the skid-mounted LNG station base and the LNG station components to perform targeted post-weld heat treatment on the weld gaps, and can perform post-weld heat treatment on skid-mounted LNG stations of different sizes. Utility Model Content

[0005] The purpose of this invention is to provide a post-weld heat treatment device for skid-mounted LNG stations. The base of the skid-mounted LNG station and the LNG station components are welded and fixed together. An L-shaped heat treatment device is inserted into the weld between the base and the LNG station components. Multiple L-shaped heat treatment devices can be used simultaneously for heat treatment. When the size of the L-shaped heat treatment device is insufficient, it can be pushed to slide along the weld to complete the heat treatment. The heat treatment is achieved by the heat radiated by the L-shaped radiating element. After the heat treatment, the external power supply connected to the L-shaped radiating element is turned off, and coolant is introduced into the circulating cooling pipeline structure to transfer the cold energy to the weld between the base and the LNG station components for rapid cooling, thereby better completing the post-weld heat treatment. The device can be used at the weld of skid-mounted LNG stations, is flexible in operation, and can perform post-weld heat treatment on skid-mounted LNG stations of different sizes.

[0006] This utility model provides a post-weld heat treatment device for a skid-mounted LNG station, comprising:

[0007] The skid-mounted LNG station is fixed to its base and LNG station components by welding.

[0008] An L-shaped heat treatment device is inserted into the welded gap between the base of the skid-mounted LNG station and the LNG station components.

[0009] The L-shaped heat treatment device includes:

[0010] The L-shaped mounting plate is inserted into the welded gap between the base of the skid-mounted LNG station and the LNG station components.

[0011] The outer side of the L-shaped mounting plate has an L-shaped snap-fit ​​structure at the right angle, and an L-shaped radiating component is inserted and snapped into it.

[0012] The inner side of the L-shaped mounting plate is fitted with an L-shaped heat-conducting mounting structure, and a circulating cooling pipe structure is fixedly fitted on its inner side.

[0013] As a further optimization, in order to transfer the cold air from the circulating cooling pipeline structure to the welded gap between the base of the skid-mounted LNG station and the LNG station components, the L-shaped heat-conducting mounting structure includes:

[0014] An L-shaped heat-conducting plate is inserted into the inner side of the L-shaped mounting plate;

[0015] The upper end of the longitudinal portion and the front end of the transverse portion of the outer side of the L-shaped mounting plate are both provided with mounting grooves;

[0016] The outer side of the L-shaped heat-conducting plate is uniformly and fixedly fitted with strip-shaped heat-conducting plates corresponding to the mounting groove, which are inserted into the corresponding mounting groove;

[0017] The outer side of the strip-shaped heat-conducting plate is in contact with the outer wall at the junction of the base of the skid-mounted LNG station and the LNG station components.

[0018] As a further optimization, in order to reduce the loss of cold energy from the strip heat-conducting plates, a heat insulation plate is fixedly installed between adjacent strip heat-conducting plates.

[0019] As a further optimization, in order to rapidly cool the heat-treated weld by circulating coolant through a serpentine pipe and transferring temperature to the weld seam via an L-shaped heat-conducting installation structure, the circulating cooling pipe structure includes:

[0020] The serpentine pipe has connectors fixedly fitted at both ends;

[0021] The outer wall of the serpentine pipe is fitted with a collar, and its outer wall is welded to the inner side of the L-shaped heat-conducting installation structure.

[0022] As a further optimization, to facilitate the installation and disassembly of the L-shaped radiating plate, and to facilitate its inspection and maintenance, the L-shaped snap-fit ​​structure includes:

[0023] The L-shaped slot is located at the right angle on the outer side of the L-shaped mounting plate;

[0024] The L-shaped slot has strip slots on both the longitudinal and transverse top surfaces along its length.

[0025] The L-shaped radiating element is inserted into the L-shaped slot, and both ends of the L-shaped radiating element are slidably engaged in the corresponding strip slots.

[0026] As a further optimization, to facilitate the installation and disassembly of the L-shaped radiating plate, and to facilitate its inspection and maintenance, the L-shaped radiating component includes:

[0027] The L-shaped radiating plate has strip-shaped inserts integrally formed on its longitudinal and transverse top surfaces along the length direction.

[0028] The strip-shaped insert is slidably engaged within the corresponding strip-shaped slot.

[0029] As a further optimization, in order to radiate heat to the weld seam between the base of the skid-mounted LNG station and the LNG station components, the weld seam is heat-treated. The L-shaped radiating plate includes:

[0030] The L-shaped shell has an L-shaped window at the right angle on its outer side.

[0031] An L-shaped heat-conducting baffle is fixedly connected to the L-shaped window by bolts;

[0032] The inner wall of the L-shaped shell is wound with heating wires.

[0033] As a further optimization, in order to reduce unnecessary heat loss from the L-shaped radiant plate to other directions, the L-shaped shell is specifically an insulated shell.

[0034] As a further optimization, in order to magnetically attach the L-shaped heat treatment device to the iron base plate and position the L-shaped heat treatment device, a magnetic block is fixedly assembled at the front end of the horizontal part of the L-shaped mounting plate, which is magnetically attached to the top surface of the base of the skid-mounted LNG station.

[0035] As a further optimization, in order to perform post-weld heat treatment on the weld between the top surface of the iron base plate and the mounting base for fixing the LNG station components, the skid-mounted LNG station includes:

[0036] The base plate is made of iron, and a mounting base is welded to its top surface.

[0037] The LNG station components of the skid-mounted LNG station are fixedly assembled on the upper end of the mounting base.

[0038] The L-shaped mounting plate is inserted into the welded gap between the mounting base and the iron base plate.

[0039] This utility model provides an improved post-weld heat treatment device for skid-mounted LNG stations, which has the following improvements and advantages compared with the prior art:

[0040] The base of the skid-mounted LNG station is welded and fixed to the LNG station components. An L-shaped heat treatment device is inserted into the weld between the base and the LNG station components. Multiple L-shaped heat treatment devices can be used simultaneously for heat treatment. When the size of the L-shaped heat treatment device is insufficient, it can be pushed to slide along the weld to complete the heat treatment. The heat treatment is achieved by the heat radiated by the L-shaped radiating element. After the heat treatment, the external power supply connected to the L-shaped radiating element is turned off, and coolant is introduced into the circulating cooling pipeline structure to transfer the cold energy to the weld between the base and the LNG station components for rapid cooling, thus better completing the post-weld heat treatment. The device can be used at the weld of skid-mounted LNG stations, is flexible in operation, and can perform post-weld heat treatment on skid-mounted LNG stations of different sizes. Attached Figure Description

[0041] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the structure of this utility model;

[0043] Figure 2 This is a schematic diagram of the L-shaped heat treatment device of this utility model;

[0044] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0045] Figure 4 This is a schematic diagram of the L-shaped radiating component structure of this utility model;

[0046] Figure 5 This is a schematic diagram of the L-shaped radiating plate structure of this utility model.

[0047] Explanation of reference numerals in the attached figures:

[0048] 1-Skid-mounted LNG station, 11-Iron base plate, 12-Mounting base, 2-L-shaped heat treatment device, 21-L-shaped mounting plate, 22-L-shaped radiating component, 221-L-shaped radiating plate, 2211-L-shaped shell, 2212-Heating wire, 2213-L-shaped window, 2214-L-shaped heat-conducting baffle, 222-Strip insert, 23-Circulating cooling pipeline structure, 231-Serpentine pipe, 232-Connector, 233-Collar ring, 24-L-shaped heat-conducting mounting structure, 241-L-shaped heat-conducting plate, 242-Insulation plate, 243-Mounting groove, 244-Strip heat-conducting plate, 25-L-shaped snap-fit ​​structure, 251-L-shaped slot, 252-Strip slot, 3-Magnetic block. Detailed Implementation

[0049] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0050] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0051] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0052] Please see Figure 1-5 This utility model provides a technical solution: a post-weld heat treatment device for a skid-mounted LNG station, comprising:

[0053] Skid-mounted LNG station 1, its base and LNG station components are welded and fixed together;

[0054] An L-shaped heat-treated device 2 is inserted into the welded gap between the base of the skid-mounted LNG station 1 and the LNG station components.

[0055] L-shaped heat treatment device 2 includes:

[0056] L-shaped mounting plate 21 is inserted into the welded gap between the base of the skid-mounted LNG station 1 and the LNG station components.

[0057] An L-shaped snap-fit ​​structure 25 is provided at the right angle of the outer side of the L-shaped mounting plate 21, and an L-shaped radiating component 22 is inserted and snapped into it.

[0058] The inner side of the L-shaped mounting plate 21 is fitted with an L-shaped heat-conducting mounting structure 24, and the inner side of the plate is fixedly fitted with a circulating cooling pipe structure 23.

[0059] Specifically in this embodiment, the weld seam between the base of the skid-mounted LNG station 1 and the LNG station components is heat-treated after welding by inserting an L-shaped heat treatment device 2. The weld seam is usually right-angled, and the L-shaped design can be inserted into this right-angled space to better fit the weld seam.

[0060] Furthermore, multiple L-shaped heat treatment devices 2 can be used simultaneously for heat treatment. When the size of the L-shaped heat treatment device 2 is insufficient, it can be pushed to slide along the weld to complete the heat treatment.

[0061] More specifically, the heat treatment is achieved by the heat radiated by the L-shaped radiating element 22. After the heat treatment, the external power supply connected to the L-shaped radiating element 22 is turned off, and coolant is introduced into the circulating cooling pipe structure 23 to transfer the cold energy to the weld between the base and the LNG station device for rapid cooling, so as to better complete the post-weld heat treatment.

[0062] It is understood that this device is suitable for post-weld heat treatment of skid-mounted LNG stations where the weld seams of the base and components are at right angles, and can also be used for post-weld heat treatment of other equipment where the weld seams of the base and components are at right angles.

[0063] In some embodiments, the L-shaped thermally conductive mounting structure 24 includes:

[0064] L-shaped heat-conducting plate 241, which is inserted into the inner side of L-shaped mounting plate 21;

[0065] Mounting grooves 243 are provided on the upper end of the longitudinal part and the front end of the transverse part of the outer side of the L-shaped mounting plate 21.

[0066] A strip-shaped heat-conducting plate 244 is uniformly fixedly assembled on the outer side of the L-shaped heat-conducting plate 241 corresponding to the mounting groove 243, and is inserted into the corresponding mounting groove 243.

[0067] The outer side of the strip heat-conducting plate 244 is in contact with the outer wall of the base of the skid-mounted LNG station 1 and the junction of the LNG station components.

[0068] Specifically, in this embodiment, the L-shaped heat-conducting plate 241 and the strip-shaped heat-conducting plate 244 are made of heat-conducting metal material, specifically aluminum alloy;

[0069] Furthermore, the L-shaped heat-conducting plate 241 and the strip heat-conducting plate 244 conduct the cold energy at the circulating cooling pipeline structure 23 to the junction of the base of the LNG station 1 and the LNG station components, and finally transfer the cold energy to the weld to rapidly cool the heat-treated weld.

[0070] In some embodiments, a heat insulation plate 242 is fixedly assembled between adjacent strip heat conduction plates 244. Multiple strip heat conduction plates 244 are arranged longitudinally on each side, and each strip heat conduction plate 244 is arranged horizontally. The heat insulation plate 242 is arranged between adjacent strip heat conduction plates 244 to isolate the temperature and reduce the loss of cold energy.

[0071] In some embodiments, the circulating cooling piping structure 23 includes:

[0072] The serpentine pipe 231 has connectors 232 fixedly fitted at both ends;

[0073] The outer wall of the serpentine pipe 231 is fitted with a collar 233, and its outer wall is welded to the inner side of the L-shaped heat-conducting installation structure 24.

[0074] Specifically, in this embodiment, the serpentine pipe 231 is made of a thermally conductive metal material and is used to transfer the cooling capacity of the cooling water to the outside.

[0075] Furthermore, the connectors 232 at both ends of the serpentine pipe 231 are used to connect to an external cooling water circulator for the circulation and supply of coolant.

[0076] In some embodiments, the L-shaped snap-fit ​​structure 25 includes:

[0077] The L-shaped slot 251 is located at the right angle on the outer side of the L-shaped mounting plate 21;

[0078] The top surface of the longitudinal end of the L-shaped slot 251 and the top surface of the transverse end are both provided with strip slots 252 along the length direction.

[0079] The L-shaped radiating element 22 is inserted into the L-shaped slot 251, and both ends of the L-shaped radiating element 22 are slidably engaged in the corresponding strip slot 252;

[0080] The L-shaped radiating element 22 includes:

[0081] The L-shaped radiating plate 221 has strip-shaped inserts 222 integrally formed on its longitudinal and transverse top surfaces along the length direction.

[0082] The strip-shaped insert 222 slides into the corresponding strip slot 252.

[0083] Specifically in this embodiment, the L-shaped radiating plate 221 is inserted into the L-shaped slot 251, and the outer side of the L-shaped radiating plate 221 and the outer side of the L-shaped mounting plate 21 are located on the same plane, so that the outer side of the L-shaped radiating plate 221 fits better with the right-angle welded seam.

[0084] Furthermore, the strip-shaped inserts 222 at both ends of the L-shaped radiating plate 221 are slidably inserted into the corresponding strip-shaped slots 252 at both ends of the L-shaped slot 251 to achieve a snap-fit ​​effect. When disassembling, they can be pulled outwards to separate the strip-shaped inserts 222 from the strip-shaped slots 252. Installation and disassembly are convenient, which facilitates the inspection and maintenance of the L-shaped radiating plate 221.

[0085] In some embodiments, the L-shaped radiating plate 221 includes:

[0086] The L-shaped shell 2211 has an L-shaped window 2213 at the right angle on its outer side;

[0087] An L-shaped heat-conducting baffle 2214 is fixedly connected to the L-shaped window 2213 by bolts;

[0088] The inner wall of the L-shaped shell 2211 is wrapped with an electric heating wire 2212.

[0089] Specifically in this embodiment, the L-shaped heat-conducting baffle 2214 is made of aluminum alloy and transfers the heat of the heating wire 2212 to the weld.

[0090] Furthermore, the heating wire 2212 is connected to an external power source for power supply.

[0091] In some embodiments, the L-shaped housing 2211 is specifically an insulated housing, which reduces unnecessary heat loss from the L-shaped radiant plate 221 to other directions, allowing heat to be better transferred to the weld along the L-shaped heat-conducting baffle 2214.

[0092] In some embodiments, a magnetic block 3 is fixedly mounted on the front end of the lateral portion of the L-shaped mounting plate 21. The magnetic block 3 magnetically attracts and fixes the L-shaped mounting plate 21 to the top surface of the base of the skid-mounted LNG station 1, thereby positioning the L-shaped heat treatment device 2 and preventing displacement during use that could affect the heat treatment effect.

[0093] In some embodiments, the skid-mounted LNG station 1 includes:

[0094] An iron base plate 11 has a mounting base 12 welded to its top surface, which is specifically a rectangular plate;

[0095] The LNG station components of the skid-mounted LNG station 1 are fixedly mounted on the upper end of the mounting base 12.

[0096] The L-shaped mounting plate 21 is inserted into the welded gap between the mounting base 12 and the iron base plate 11. The LNG station equipment is set according to the actual situation, and includes at least a gas storage section and a gas refueling section.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A post-weld heat treatment device for a skid-mounted LNG station, characterized in that, include: A skid-mounted LNG station (1) is fixed to its base and LNG station components by welding; An L-shaped heat treatment device (2) is inserted into the weld seam between the base of the skid-mounted LNG station (1) and the LNG station components; The L-shaped heat treatment device (2) includes: L-shaped mounting plate (21) is inserted into the welded gap between the base of the skid-mounted LNG station (1) and the LNG station components; The L-shaped mounting plate (21) has an L-shaped snap-fit ​​structure (25) at the right angle on its outer side, and an L-shaped radiating component (22) is inserted and snapped into it; The inner side of the L-shaped mounting plate (21) is fitted with an L-shaped heat-conducting mounting structure (24), and the inner side is fixedly fitted with a circulating cooling pipe structure (23).

2. The post-weld heat treatment device for a skid-mounted LNG station according to claim 1, characterized in that, The L-shaped heat-conducting mounting structure (24) includes: L-shaped heat-conducting plate (241), which is inserted into the inner side of the L-shaped mounting plate (21); The upper end of the longitudinal part and the front end of the transverse part of the outer side of the L-shaped mounting plate (21) are provided with mounting grooves (243); The outer side of the L-shaped heat-conducting plate (241) is uniformly fixed with strip-shaped heat-conducting plates (244) corresponding to the mounting groove (243), which are inserted into the mounting groove (243); The outer side of the strip heat-conducting plate (244) is in contact with the outer wall at the junction of the base of the skid-mounted LNG station (1) and the LNG station components.

3. The post-weld heat treatment device for a skid-mounted LNG station according to claim 2, characterized in that, A heat insulation plate (242) is fixedly assembled between adjacent strip heat-conducting plates (244).

4. The post-weld heat treatment device for a skid-mounted LNG station according to claim 1, characterized in that, The circulating cooling pipeline structure (23) includes: The serpentine pipe (231) has connectors (232) fixedly fitted at both ends; The outer wall of the serpentine pipe (231) is fitted with a collar (233), the outer wall of which is welded to the inner side of the L-shaped heat-conducting installation structure (24).

5. The post-weld heat treatment device for a skid-mounted LNG station according to claim 1, characterized in that, The L-shaped snap-fit ​​structure (25) includes: The L-shaped slot (251) is located at the right angle on the outer side of the L-shaped mounting plate (21); The L-shaped slot (251) has strip slots (252) on both the longitudinal and transverse top surfaces along its length. The L-shaped radiating element (22) is inserted into the L-shaped slot (251), and the two ends of the L-shaped radiating element (22) are slidably engaged in the corresponding strip slot (252).

6. The post-weld heat treatment device for a skid-mounted LNG station according to claim 5, characterized in that, The L-shaped radiating element (22) includes: The L-shaped radiating plate (221) has strip-shaped inserts (222) integrally formed on its longitudinal and transverse top surfaces along the length direction; The strip-shaped insert (222) is slidably engaged in the corresponding strip-shaped slot (252).

7. A post-weld heat treatment device for a skid-mounted LNG station according to claim 6, characterized in that, The L-shaped radiating plate (221) includes: The L-shaped shell (2211) has an L-shaped window (2213) at the right angle on its outer side; An L-shaped heat-conducting baffle (2214) is fixedly connected to the L-shaped window (2213) by bolts; The inner wall of the L-shaped housing (2211) is wound with heating wire (2212).

8. The post-weld heat treatment device for a skid-mounted LNG station according to claim 7, characterized in that, The L-shaped shell (2211) is specifically an insulated shell.

9. A post-weld heat treatment device for a skid-mounted LNG station according to claim 1, characterized in that, The front end of the horizontal part of the L-shaped mounting plate (21) is fixedly equipped with a magnetic block (3), which is magnetically attracted and fixed to the top surface of the base of the skid-mounted LNG station (1).

10. A post-weld heat treatment device for a skid-mounted LNG station according to claim 9, characterized in that, The skid-mounted LNG station (1) includes: An iron base plate (11) has a mounting base (12) welded to its top surface; The LNG station components of the skid-mounted LNG station (1) are fixedly assembled on the upper end of the mounting base (12); The L-shaped mounting plate (21) is inserted into the welded gap between the mounting base (12) and the iron base plate (11).

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