Connecting assembly of high-pressure seamless eccentric three-way pipe fitting for jacket

Abstract

The utility model relates to the technical field of pipeline connection, in particular to a connecting assembly of a high-pressure seamless eccentric three-way pipe fitting for a jacket, which comprises an inner connecting part, an outer connecting part and two threaded connecting sections, the two ends of the inner connecting part are respectively connected with an inner pipe of the high-pressure seamless eccentric three-way pipe fitting for the jacket and an inner pipe of a communicating pipe fitting in an inserted manner, and the outer connecting part is connected with the two threaded connecting sections. The outer connecting part is located outside the inner connecting part and connected with the inner connecting part through the first connecting block, the two threaded connecting sections are in threaded connection with the two ends of the outer connecting part respectively, and the two threaded connecting sections are in spiral connection with a jacket of the jacket high-pressure seamless eccentric three-way pipe fitting and a jacket of the communicating pipe fitting respectively. According to the jacket high-pressure seamless eccentric three-way pipe fitting, the inner connecting part, the outer connecting part and the threaded connecting section are matched with one another, so that the inner pipe of the jacket high-pressure seamless eccentric three-way pipe fitting is connected with the inner pipe of the communicating pipe fitting, and the jacket of the jacket high-pressure seamless eccentric three-way pipe fitting is connected with the jacket of the communicating pipe fitting.

Description

Technical Field

[0001] This utility model relates to the field of pipeline connection technology, and in particular to a connection assembly for a jacketed high-pressure seamless eccentric tee pipe fitting. Background Technology

[0002] Jacketed high-pressure seamless eccentric tee fittings are special-purpose pipe fittings used in industrial piping systems. The jacketed design typically involves adding a sleeve to the outer layer of the tee fitting, creating a certain space between the jacket and the inner pipe. This space allows for the introduction of heating or cooling media (e.g., steam, hot water, cooling water) to heat or cool the fluid in the inner pipe, achieving precise temperature control during the process. In use, these jacketed high-pressure seamless eccentric tee fittings need to be connected to other pipe fittings; therefore, a connecting assembly for these fittings is urgently needed.

[0003] Currently, most pipe fitting connection components are single-layer connections, meaning they can only connect single-layer pipes. However, they cannot be used for double-layer (i.e., jacket and inner pipe) pipes, such as jacketed high-pressure seamless eccentric tee fittings. Utility Model Content

[0004] To address the shortcomings of the existing production technology, the applicant provides a connection assembly for a jacketed high-pressure seamless eccentric tee pipe fitting. By improving the structure of the connection assembly, it adapts to the connection of the jacketed high-pressure seamless eccentric tee pipe fitting.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A connecting assembly for a jacketed high-pressure seamless eccentric tee pipe fitting includes: an inner connecting part, an outer connecting part, and two threaded connecting sections. The two ends of the inner connecting part are respectively inserted into the inner tube of the jacketed high-pressure seamless eccentric tee pipe fitting and the inner tube of a connecting pipe fitting. The outer connecting part is located outside the inner connecting part and is connected to the inner connecting part via a first connecting block. The two threaded connecting sections are respectively threaded to the two ends of the outer connecting part, and are respectively connected to the jacket of the jacketed high-pressure seamless eccentric tee pipe fitting and the jacket thread of the connecting pipe fitting. A threaded connection is used. When the threaded connection section is not connected to the jacket of the jacketed high-pressure seamless eccentric tee fitting or the jacket of the connecting pipe fitting, the distance d1 between the end face of the threaded connection section away from the outer connection part and the center position of the outer connection part is less than half the length d2 of the inner connection part. When the threaded connection section is connected to the jacket of the jacketed high-pressure seamless eccentric tee fitting or the jacket of the connecting pipe fitting, the distance d3 between the end face of the threaded connection section away from the outer connection part and the center position of the outer connection part is greater than half the length d2 of the inner connection part.

[0007] Therefore, through the cooperation of the inner connecting part, the outer connecting part, and the threaded connecting section, the inner pipe of the jacketed high-pressure seamless eccentric tee fitting is connected to the inner pipe of the connecting pipe fitting, and the jacket of the jacketed high-pressure seamless eccentric tee fitting is connected to the jacket of the connecting pipe fitting. Compared with the existing single-layer pipe connection structure, this method is simple in structure and easy to operate. The connection of double-layer pipes can be achieved through the two connecting parts, the inner connecting part and the outer connecting part. In addition, by limiting the distance between the threaded connecting section and the inner connecting part, the inner connecting part protrudes from the threaded connecting section when the inner pipe is connected, and the threaded connecting section will not interfere with the connection of the inner pipe, so as to facilitate the installation and disassembly of the inner pipe.

[0008] As a further improvement to the above technical solution: the inner connection part includes: a first connection section and a second connection section, the second connection section is located inside the first connection section, and an installation groove is formed between the first connection section and the second connection section, and a jacketed high-pressure seamless eccentric tee fitting or a connecting fitting is inserted into the installation groove.

[0009] As a further improvement to the above technical solution: the inner wall of the mounting groove is provided with a first sealing gasket, the cross-sectional shape of which is "U". Thus, the sealing performance between the inner tube of the jacketed high-pressure seamless eccentric tee fitting or the inner tube of the connecting fitting and the inner connecting part is improved by the "U"-shaped first sealing gasket.

[0010] As a further improvement to the above technical solution: the end face of the first connecting section is a slope, inclined to the side away from the axis of the second connecting section; the end face of the second connecting section is a slope, inclined to the side closer to the axis of the second connecting section. Therefore, the sloped end face of the first connecting section facilitates lossless flow of the heating or cooling medium within the jacket in the transition region between the inner tube and the first connecting section; the sloped end face of the second connecting section facilitates lossless flow of the fluid to be transported within the inner tube in the transition region between the inner tube and the first connecting section.

[0011] As a further improvement to the above technical solution, a sealing ring is provided on the end face of the external connection part. This sealing ring improves the sealing performance of the connection between the jacketed high-pressure seamless eccentric tee fitting or connecting pipe fitting and the external connection part.

[0012] As a further improvement to the above technical solution: the inner diameter of the outer connecting part jacket is d4, the inner diameter of the jacket of the high-pressure seamless eccentric tee fitting is d5, and the inner diameter of the connecting pipe fitting jacket is d6; d4 = d5, d4 = d6. Thus, by limiting the inner diameter of the outer connecting part, the heating or cooling medium inside the jacket can flow without loss in the transition area between the jacket and the outer connecting part.

[0013] As a further improvement to the above technical solution, it also includes: two first connecting mechanisms, wherein the two threaded connecting sections are respectively connected to the jacket of the jacketed high-pressure seamless eccentric tee pipe fitting and the jacket of the connecting pipe fitting through the two first connecting mechanisms.

[0014] As a further improvement to the above technical solution: the first connecting mechanism includes: a rotating block, two second connecting blocks and two first fasteners. The rotating block is rotatably connected to the outer wall of the threaded connecting section. The second connecting blocks are connected to the rotating block and extend to the outside of the threaded connecting section. The first fasteners are threadedly connected to the second connecting blocks. The two second connecting blocks are arranged opposite to each other. Therefore, by using the first connecting mechanism to reinforce the jacketed high-pressure seamless eccentric tee fitting, connecting pipe fitting, and threaded connection section on the basis of the threaded connection, the connection method of the jacketed high-pressure seamless eccentric tee fitting, connecting pipe fitting, and threaded connection section is further reinforced to prevent the spiral connection method from easily loosening due to vibration, thus affecting the connection effect between the jacketed high-pressure seamless eccentric tee fitting, connecting pipe fitting, and threaded connection section. In addition, the rotating block is rotatably connected to the threaded connection section to facilitate the insertion of the first fastener into the jacket of the jacketed high-pressure seamless eccentric tee fitting or the jacket of the connecting pipe fitting. At the same time, the two second connecting blocks are arranged opposite to each other so that after the jacket of the jacketed high-pressure seamless eccentric tee fitting, the jacket of the connecting pipe fitting, and the threaded connection section are connected by the first fastener, the first fastener can restrict the relative rotation between the jacket of the jacketed high-pressure seamless eccentric tee fitting, the jacket of the connecting pipe fitting, and the threaded connection section. In this way, the connection effect between the jacketed high-pressure seamless eccentric tee fitting, the connecting pipe fitting, and the threaded connection section can be further improved.

[0015] As a further improvement to the above technical solution, it also includes: two second connecting mechanisms, wherein the two ends of the first connecting section are respectively connected to the inner tube of the jacketed high-pressure seamless eccentric tee fitting and the inner tube of the connecting fitting through the two second connecting mechanisms.

[0016] As a further improvement to the above technical solution: the second connecting mechanism includes two third connecting blocks and two second fasteners. The third connecting blocks are installed on the end face of the first connecting section, and the second fasteners pass through the third connecting blocks and are threadedly connected to them. The two third connecting blocks are arranged opposite to each other. When the jacketed high-pressure seamless eccentric tee fitting or connecting pipe fitting is connected to the inner connecting part, the second fasteners are inserted into the inner tube of the jacketed high-pressure seamless eccentric tee fitting or the inner tube of the connecting pipe fitting, and are threadedly connected to it. Therefore, the second connecting structure can further enhance the connection effect between the inner tube of the jacketed high-pressure seamless eccentric tee fitting, the inner tube of the connecting pipe fitting, and the inner connecting part. Furthermore, the insertion-type connection method of the second fasteners can restrict the relative rotation between the jacketed high-pressure seamless eccentric tee fitting, the connecting pipe fitting, and the inner connecting part, thus further improving the connection effect between the jacketed high-pressure seamless eccentric tee fitting, the connecting pipe fitting, and the inner connecting part.

[0017] The beneficial effects of this utility model are as follows:

[0018] By cooperating with the inner connecting part, the outer connecting part, and the threaded connecting section, the inner pipe of the jacketed high-pressure seamless eccentric tee fitting is connected to the inner pipe of the connecting pipe fitting, and the jacket of the jacketed high-pressure seamless eccentric tee fitting is connected to the jacket of the connecting pipe fitting. Compared with the existing single-layer pipe connection structure, this method is simple in structure and easy to operate. The connection of double-layer pipes can be achieved through the two connecting parts, the inner connecting part and the outer connecting part. In addition, by limiting the distance between the threaded connecting section and the inner connecting part, the inner connecting part protrudes from the threaded connecting section when the inner pipe is connected, and the threaded connecting section will not interfere with the connection of the inner pipe, so as to facilitate the installation and disassembly of the inner pipe.

[0019] This utility model also has the following advantages:

[0020] 1. The inclined end face of the first connecting section of this utility model can facilitate the lossless flow of the heating or cooling medium in the jacket in the transition area between the jacket and the first connecting section; the inclined end face of the second connecting section can facilitate the lossless flow of the fluid to be transported in the inner tube in the transition area between the inner tube and the first connecting section; by limiting the inner diameter of the outer connecting part, the heating or cooling medium in the jacket can flow losslessly in the transition area between the jacket and the outer connecting part.

[0021] 2. This utility model reinforces the jacketed high-pressure seamless eccentric tee fitting, connecting pipe fitting, and threaded connection section based on the threaded connection through a first connecting mechanism. This prevents the spiral connection between the jacketed high-pressure seamless eccentric tee fitting, connecting pipe fitting, and threaded connection section from easily loosening due to vibration, thus affecting the connection effect. Furthermore, the rotating block's rotatable connection with the threaded connection section facilitates the insertion of the first fastener into the jacket of the jacketed high-pressure seamless eccentric tee fitting or the connecting pipe fitting. Simultaneously, the two second connecting blocks are arranged opposite each other, ensuring that after the jacket of the jacketed high-pressure seamless eccentric tee fitting, the jacket of the connecting pipe fitting, and the threaded connection section are connected by the first fastener, the first fastener restricts the relative rotation between the jacket of the jacketed high-pressure seamless eccentric tee fitting, the jacket of the connecting pipe fitting, and the threaded connection section. This further improves the connection effect between the jacketed high-pressure seamless eccentric tee fitting, the connecting pipe fitting, and the threaded connection section. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the threaded connection section of the connecting assembly of the jacketed high-pressure seamless eccentric tee pipe fitting of this utility model in the connected state.

[0023] Figure 2 This is a cross-sectional view of the threaded connection section of the connecting assembly of the jacketed high-pressure seamless eccentric tee pipe fitting of this utility model in the connected state.

[0024] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of a local structure at point A;

[0025] Figure 4 This is a left view of the connection assembly of the jacketed high-pressure seamless eccentric tee pipe fitting of this utility model;

[0026] Figure 5 This is a schematic diagram of the connection assembly of the jacketed high-pressure seamless eccentric tee pipe fitting of this utility model with the threaded connection section in an unconnected state.

[0027] Figure 6 This is a cross-sectional view of the threaded connection section of the connecting assembly of the jacketed high-pressure seamless eccentric tee pipe fitting of this utility model in an unconnected state.

[0028] Figure 7 This is a rendering of the connection between the jacketed high-pressure seamless eccentric tee fitting and the connecting fitting of this utility model.

[0029] Figure 8 This is an exploded view of the connection between the jacketed high-pressure seamless eccentric tee fitting and the connecting fitting of this utility model.

[0030] Figure 9 For the present utility model Figure 8 Enlarged schematic diagram of the local structure at point B.

[0031] Among them: 1. Inner connecting part;

[0032] 101. First connecting section; 102. Second connecting section; 103. Mounting groove; 104. First sealing gasket;

[0033] 2. External connecting part;

[0034] 201. Sealing ring;

[0035] 3. Threaded connection section;

[0036] 4. First connecting block;

[0037] 5. First connecting mechanism;

[0038] 501. Rotating block; 502. Second connecting block; 503. First fastener;

[0039] 6. Second connecting mechanism;

[0040] 601. Third connecting block; 602. Second fastener. Detailed Implementation

[0041] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0042] like Figures 1 to 9The diagram shows the preferred embodiment of this utility model. The connecting assembly of the jacketed high-pressure seamless eccentric tee pipe fitting in this embodiment includes: an inner connecting part 1, an outer connecting part 2, and two threaded connecting sections 3. The two ends of the inner connecting part 1 are respectively inserted into the inner tube of the jacketed high-pressure seamless eccentric tee pipe fitting and the inner tube of the connecting pipe fitting. The outer connecting part 2 is located outside the inner connecting part 1 and is connected to the inner connecting part 1 through a first connecting block 4. The two threaded connecting sections 3 are respectively threaded to the two ends of the outer connecting part 2, and are respectively connected to the jacketed high-pressure seamless eccentric tee pipe fitting. The sleeve and the connecting pipe fitting are spirally connected; when the threaded connection section 3 is not connected to the sleeve of the high-pressure seamless eccentric tee fitting or the sleeve of the connecting pipe fitting, the distance d1 between the end face of the threaded connection section 3 away from the outer connection part 2 and the center position of the outer connection part 2 is less than half the length d2 of the inner connection part 1; when the threaded connection section 3 is connected to the sleeve of the high-pressure seamless eccentric tee fitting or the sleeve of the connecting pipe fitting, the distance d3 between the end face of the threaded connection section 3 away from the outer connection part 2 and the center position of the outer connection part 2 is greater than half the length d2 of the inner connection part 1. Therefore, through the cooperation of the inner connecting part 1, the outer connecting part 2, and the threaded connecting section 3, the inner pipe of the jacketed high-pressure seamless eccentric tee fitting is connected to the inner pipe of the connecting pipe fitting, and the jacket of the jacketed high-pressure seamless eccentric tee fitting is connected to the jacket of the connecting pipe fitting. Compared with the existing single-layer pipe connection structure, this method is simple in structure and easy to operate. The connection of double-layer pipes can be achieved through the two connecting parts, the inner connecting part 1 and the outer connecting part 2. In addition, by limiting the distance between the threaded connecting section 3 and the inner connecting part 1, the inner connecting part 1 protrudes from the threaded connecting section 3 when the inner pipe is connected, and the threaded connecting section 3 will not interfere with the connection of the inner pipe, so as to facilitate the installation and disassembly of the inner pipe.

[0043] In other words, by limiting the distance between the threaded connection section 3 and the inner connection part 1, when the inner tube is connected to the inner connection part 1, the spiral connection section moves closer to the center of the outer connection part 2. This allows the inner connection part 1 to protrude from the threaded connection section 3, and the inner connection part 1 has a certain space relative to the threaded connection section 3. This space facilitates the insertion of the inner tube of the jacketed high-pressure seamless eccentric tee fitting and the connecting pipe into the inner connection part 1 (i.e., the threaded connection section 3 does not interfere with the connection of the inner tube), thus facilitating the installation and disassembly of the inner tube.

[0044] It should be noted that: Insertion connection refers to the connection method in which the inner tube of the jacketed high-pressure seamless eccentric tee fitting and the inner tube of the connecting fitting are moved along the axis of the inner connection part 1 towards the side closer to the inner connection part 1, and then inserted into the inner connection part 1; Spiral connection refers to the connection method in which the spiral connection section moves gradually away from the outer connection part 2 in a rotating manner, and then connects with the jacket of the jacketed high-pressure seamless eccentric tee fitting and the jacket of the connecting fitting.

[0045] Specifically, jacketed high-pressure seamless eccentric tee fittings and connecting fittings are divided into inner and outer layers. The inner layer is an inner tube, and the outer layer is a sleeve (i.e., the inner tube is embedded in the sleeve). The inner tube is used to transport fluid, and the space between the sleeve and the inner tube is used to transport heating or cooling media. The heating or cooling media is used to heat or cool the fluid in the inner tube.

[0046] In this embodiment, the inner connecting part 1 includes: a first connecting section 101 and a second connecting section 102. The second connecting section 102 is located inside the first connecting section 101, and an installation groove 103 is formed between the first connecting section 101 and the second connecting section 102. A jacketed high-pressure seamless eccentric tee fitting or a connecting fitting is inserted into the installation groove 103. A first sealing gasket 104 is provided on the inner wall of the installation groove 103. The cross-sectional shape of the first sealing gasket 104 is "U". The end face of the first connecting section 101 is inclined and tilted away from the axis of the second connecting section 102. The end face of the second connecting section 102 is inclined and tilted towards the axis of the second connecting section 102. Therefore, the sealing performance of the connection between the inner tube of the jacketed high-pressure seamless eccentric tee fitting or the inner tube of the connecting fitting and the inner connection part 1 is improved by the first sealing gasket 104 with a cross-sectional shape of "U". The inclined end face of the first connecting section 101 can facilitate the lossless flow of the heating medium or cooling medium in the jacket in the transition area between the jacket and the first connecting section 101. The inclined end face of the second connecting section 102 can facilitate the lossless flow of the fluid to be transported in the inner tube in the transition area between the inner tube and the first connecting section 101.

[0047] In other words, the beveled end face of the first connecting section 101 allows for a smooth transition between the inner tube and the first connecting section 101. This ensures that the heating or cooling medium flows smoothly through this area without obstruction, facilitating lossless flow of the heating or cooling medium within the jacket in the transition area between the jacket and the first connecting section 101. Furthermore, the bevel is angled away from the axis of the second connecting section 102, ensuring that the flow direction of the heating or cooling medium aligns with the inclination of the bevel, further facilitating the flow of the heating or cooling medium within the jacket between the jacket and the first connecting section 101. The transition region of section 101 allows for lossless flow; the end face of the second connecting section 102 is designed with a slope to ensure a smooth transition between the inner tube and the second connecting section 102. When the fluid flows through this region, it will not be obstructed. This facilitates lossless flow of the fluid to be transported in the inner tube in the transition region between the inner tube and the first connecting section 101. In addition, the slope is inclined to the side closer to the axis of the second connecting section 102 so that the flow direction of the fluid is consistent with the inclination trend of the slope, thereby further facilitating lossless flow of the fluid to be transported in the inner tube in the transition region between the inner tube and the first connecting section 101.

[0048] In this embodiment, a sealing ring 201 is provided on the end face of the outer connecting part 2; the inner diameter of the jacket of the outer connecting part 2 is d4, the inner diameter of the jacket of the high-pressure seamless eccentric tee fitting is d5, and the inner diameter of the jacket of the connecting pipe fitting is d6; d4 = d5, d4 = d6. Thus, the sealing ring 201 improves the sealing performance of the connection between the jacket high-pressure seamless eccentric tee fitting or the connecting pipe fitting and the outer connecting part 2; by limiting the inner diameter of the outer connecting part 2, the heating medium or cooling medium in the jacket can flow without loss in the transition area between the jacket and the outer connecting part 2.

[0049] In other words, by limiting the inner diameter of the outer connecting part 2 (i.e., d4 = d5, d4 = d6), the dimensions of each position in the connection area between the jacket and the outer connecting part 2 are kept consistent and do not change. In this way, the flow of the heating medium or cooling medium through this area is not obstructed, so that the heating medium or cooling medium in the jacket can flow without loss in the transition area between the jacket and the outer connecting part 2.

[0050] In this embodiment, it further includes: two first connecting mechanisms 5, and two threaded connecting sections 3 are respectively connected to the jacket of the jacketed high-pressure seamless eccentric tee fitting and the jacket of the connecting pipe fitting through the two first connecting mechanisms 5; the first connecting mechanism 5 includes: a rotating block 501, two second connecting blocks 502 and two first fasteners 503, the rotating block 501 is rotatably connected to the outer wall of the threaded connecting section 3, the second connecting block 502 is connected to the rotating block 501 and extends to the outside of the threaded connecting section 3, the first fasteners 503 are threadedly connected to the second connecting block 502, and the two second connecting blocks 502 are arranged opposite to each other. Therefore, by using the first connecting mechanism 5 to reinforce the jacketed high-pressure seamless eccentric tee fitting, connecting pipe fitting, and threaded connection section 3 on the basis of the threaded connection, the spiral connection of the jacketed high-pressure seamless eccentric tee fitting, connecting pipe fitting, and threaded connection section 3 is easily loosened due to vibration, thus affecting the connection effect between the jacketed high-pressure seamless eccentric tee fitting, connecting pipe fitting, and threaded connection section 3. In addition, the rotating block 501 is rotatably connected to the threaded connection section 3 to facilitate the insertion of the first fastener 503 into the jacketed high-pressure seamless eccentric tee fitting, connecting pipe fitting, and threaded connection section 3. Inside the jacket of the pressure-sealed eccentric tee fitting or the jacket of the connecting pipe fitting, two second connecting blocks 502 are simultaneously arranged opposite each other. After the jacket of the pressure-sealed pressure-sealed eccentric tee fitting or the jacket of the connecting pipe fitting is connected to the threaded connection section 3 by the first fastener 503, the first fastener 503 can restrict the relative rotation between the jacket of the pressure-sealed pressure-sealed eccentric tee fitting or the jacket of the connecting pipe fitting and the threaded connection section 3. In this way, the connection effect between the pressure-sealed pressure-sealed eccentric tee fitting or the connecting pipe fitting and the threaded connection section 3 can be further improved.

[0051] For example, the first fastener 503 is a bolt.

[0052] In this embodiment, it further includes: two second connecting mechanisms 6, the two ends of the first connecting section 101 are respectively connected to the inner tube of the jacketed high-pressure seamless eccentric tee fitting and the inner tube of the connecting fitting through the two second connecting mechanisms 6; the second connecting mechanism 6 includes: two third connecting blocks 601 and two second fasteners 602, the third connecting blocks 601 are installed on the end face of the first connecting section 101, the second fasteners 602 pass through the third connecting blocks 601 and are threadedly connected to the third connecting blocks 601, the two third connecting blocks 601 are arranged opposite to each other; when the jacketed high-pressure seamless eccentric tee fitting or the connecting fitting is connected to the inner connecting part 1, the second fasteners 602 are inserted into the inner tube of the jacketed high-pressure seamless eccentric tee fitting or the inner tube of the connecting fitting, and are threadedly connected to the inner tube of the jacketed high-pressure seamless eccentric tee fitting or the inner tube of the connecting fitting. Therefore, the second connection structure can further enhance the connection effect between the inner tube of the jacketed high-pressure seamless eccentric tee fitting, the inner tube of the connecting fitting, and the inner connection part 1; in addition, the insertion connection method of the second fastener 602 can restrict the relative rotation between the jacketed high-pressure seamless eccentric tee fitting, the connecting fitting, and the inner connection part 1, thus further improving the connection effect between the jacketed high-pressure seamless eccentric tee fitting, the connecting fitting, and the inner connection part 1.

[0053] For example, the second fastener 602 is a bolt.

[0054] The connection process of the jacketed high-pressure seamless eccentric tee fitting and the connecting fitting of this utility model is as follows: First, the inner tube of the jacketed high-pressure seamless eccentric tee fitting and the inner tube of the connecting fitting are inserted into both ends of the inner connecting part 1 in an insertion manner; then, the inner tube of the jacketed high-pressure seamless eccentric tee fitting and the inner tube of the connecting fitting are connected to the inner connecting part 1 respectively through two second connecting mechanisms 6; then, the jacket of the jacketed high-pressure seamless eccentric tee fitting and the jacket of the connecting fitting are connected to the threaded connecting section 3 in a spiral manner; finally, the jacket of the jacketed high-pressure seamless eccentric tee fitting and the threaded connecting section 3 are connected to the threaded connecting section 3 respectively through two first connecting mechanisms 5.

[0055] In summary, this utility model achieves the connection between the inner tube of the jacketed high-pressure seamless eccentric tee fitting and the inner tube of the connecting pipe fitting, and the connection between the jacket of the jacketed high-pressure seamless eccentric tee fitting and the jacket of the connecting pipe fitting, through the cooperation of the inner connecting part 1, the outer connecting part 2, and the threaded connecting section 3. Compared with the existing single-layer pipe connection structure, this method is simple in structure and easy to operate. The connection of double-layer pipes can be achieved through the two connecting parts, the inner connecting part 1 and the outer connecting part 2. In addition, by limiting the distance between the threaded connecting section 3 and the inner connecting part 1, the inner connecting part 1 protrudes from the threaded connecting section 3 when the inner tube is connected, and the threaded connecting section 3 will not interfere with the connection of the inner tube, so as to facilitate the installation and disassembly of the inner tube.

[0056] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A connecting assembly for a jacketed high-pressure seamless eccentric tee pipe fitting, characterized in that, Including: An inner connecting part (1), both ends of the inner connecting part (1) are respectively inserted and connected to the inner pipe of the jacketed high-pressure seamless eccentric three-way pipe fitting and the inner pipe of the connecting pipe fitting; An outer connecting part (2) and two threaded connection segments (3), the outer connecting part (2) is located outside the inner connecting part (1), and is connected to the inner connecting part (1) through a first connecting block (4), the two threaded connection segments (3) are respectively threadedly connected to both ends of the outer connecting part (2), and the two threaded connection segments (3) are respectively spirally connected to the jacket of the jacketed high-pressure seamless eccentric three-way pipe fitting and the jacket of the connecting pipe fitting; When the threaded connection segment (3) is not connected to the jacket of the jacketed high-pressure seamless eccentric three-way pipe fitting or the jacket of the connecting pipe fitting, the distance d1 between the end face on the side away from the outer connecting part (2) of the threaded connection segment (3) and the central position of the outer connecting part (2) is less than half of the length d2 of the inner connecting part (1); When the threaded connection segment (3) is connected to the jacket of the jacketed high-pressure seamless eccentric three-way pipe fitting or the jacket of the connecting pipe fitting, the distance d3 between the end face on the side away from the outer connecting part (2) of the threaded connection segment (3) and the central position of the outer connecting part (2) is greater than half of the length d2 of the inner connecting part (1).

2. The connection assembly for a jacketed high-pressure seamless eccentric tee pipe fitting as described in claim 1, characterized in that: The inner connecting part (1) includes: A first connecting segment (101) and a second connecting segment (102), the second connecting segment (102) is located inside the first connecting segment (101), and an installation groove (103) is formed between the first connecting segment (101) and the second connecting segment (102), and the jacketed high-pressure seamless eccentric three-way pipe fitting or the connecting pipe fitting is inserted into the installation groove (103).

3. The connection assembly for a jacketed high-pressure seamless eccentric tee pipe fitting as described in claim 2, characterized in that: A first sealing gasket (104) is provided on the inner wall of the installation groove (103), and the cross-sectional shape of the first sealing gasket (104) is "U"-shaped.

4. The connection assembly for a jacketed high-pressure seamless eccentric tee pipe fitting as described in claim 2, characterized in that: The end face of the first connecting segment (101) is an inclined surface and is inclined towards the side away from the axis of the second connecting segment (102); The end face of the second connecting segment (102) is an inclined surface and is inclined towards the side close to the axis of the second connecting segment (102).

5. The connection assembly for a jacketed high-pressure seamless eccentric tee pipe fitting as described in claim 1, characterized in that: A sealing ring (201) is provided on the end face of the outer connecting part (2).

6. The connection assembly for a jacketed high-pressure seamless eccentric tee pipe fitting as described in claim 1, characterized in that: The inner diameter of the jacket of the outer connecting part (2) is d4, the inner diameter of the jacket of the jacketed high-pressure seamless eccentric three-way pipe fitting is d5, and the inner diameter of the jacket of the connecting pipe fitting is d6; d4 = d5, d4 = d6.

7. The connection assembly for a jacketed high-pressure seamless eccentric tee pipe fitting as described in claim 1, characterized in that: It further includes: Two first connecting mechanisms (5), the two threaded connection segments (3) are respectively connected to the jackets of the jacketed high-pressure seamless eccentric three-way pipe fitting and the connecting pipe fitting through the two first connecting mechanisms (5).

8. The connection assembly for a jacketed high-pressure seamless eccentric tee pipe fitting as described in claim 7, characterized in that: The first connecting mechanism (5) includes: The rotating block (501), two second connecting blocks (502), and two first fasteners (503) are provided. The rotating block (501) is rotatably connected to the outer wall of the threaded connecting section (3). The second connecting blocks (502) are connected to the rotating block (501) and extend to the outside of the threaded connecting section (3). The first fasteners (503) are threadedly connected to the second connecting blocks (502). The two second connecting blocks (502) are arranged opposite to each other.

9. The connection assembly for a jacketed high-pressure seamless eccentric tee pipe fitting as described in claim 2, characterized in that: Also includes: Two second connecting mechanisms (6) are provided, and the two ends of the first connecting section (101) are respectively connected to the inner tube of the jacketed high-pressure seamless eccentric tee fitting and the inner tube of the connecting fitting through the two second connecting mechanisms (6).

10. The connection assembly for a jacketed high-pressure seamless eccentric tee pipe fitting as described in claim 9, characterized in that: The second connecting mechanism (6) includes: Two third connecting blocks (601) and two second fasteners (602) are provided. The third connecting blocks (601) are mounted on the end face of the first connecting segment (101). The second fasteners (602) pass through the third connecting blocks (601) and are threadedly connected to the third connecting blocks (601). The two third connecting blocks (601) are arranged opposite to each other. When the jacketed high-pressure seamless eccentric tee or connecting pipe is connected to the inner connection part (1), the second fastener (602) is inserted into the inner tube of the jacketed high-pressure seamless eccentric tee or the inner tube of the connecting pipe, and is threadedly connected to the inner tube of the jacketed high-pressure seamless eccentric tee or the inner tube of the connecting pipe.

Images