CN220623110U - Steel pressure pipeline and flange connection structure - Google Patents

Abstract

The utility model discloses a steel pressure pipeline and flange connection structure, which comprises a valve and a pipeline connected with the valve, wherein one end of the pipeline is fixedly provided with a first flange plate, an inner ring fluted disc is arranged on the pipeline in a sliding manner, outer ring teeth are rotationally arranged on the outer side of the inner ring fluted disc, at least three nuts are uniformly distributed between the outer ring teeth and the inner ring fluted disc, one end of each nut is respectively meshed with the inner ring fluted disc and the outer ring teeth, the other end of each nut is in threaded connection with the first flange plate, the other end of each nut penetrates through the first flange plate to be connected with a fixed plate, the fixed plate is arranged in the first flange plate in a sliding manner, at least one second flange plate is arranged on the valve, and a limiting groove in sealing clamping connection with the fixed plate is arranged in the second flange plate. According to the utility model, the nut on the first flange plate is meshed with the inner ring fluted disc to rotate through the rotation of the outer ring tooth on the pipeline, the fixing plate in the first flange plate is pushed by the nut to move upwards, and the fixing plate is clamped on the valve through sliding and is used for clamping and fixing the pipeline and the valve.

Description

A steel pressure pipe and flange connection structure

Technical field

The utility model relates to a steel pressure pipeline and flange connection structure, belonging to the technical field of pipeline connection.

Background technique

Most of the existing steel pressure pipes are connected to flanges through nuts, so that when the sealing surface of the flange is damaged, the flange can be replaced as a whole, such as the following technology:

Reference Publication (Announcement) Number: CN218780914U, Publication (Announcement) Date: 2023-03-31, a detachable looper flange is disclosed, including a flange, and the connection part of the pipeline is provided with a convex ring joint. The ring joint is set in the detachable flange. The detachable flange has a left and right spliced structure. The detachable flanges are connected to each other through screw rods and bolts.

In the prior art including the above-mentioned patents, the above-mentioned flanges are connected through multiple nuts, so that when replacing the flange, the entire flange can be replaced. However, since the above-mentioned flange is connected to the pipeline through multiple screws and bolts, , resulting in the need for screws and bolts to be disassembled and installed one by one during installation and disassembly.

Contents of the invention

The technical problem to be solved by the utility model is: when replacing the flange on the steel pressure pipeline, how to avoid disassembling and installing one by one the multiple screws and bolts used to connect the flange and the pipeline.

In order to solve the above technical problems, the technical solution of the present invention is to provide a steel pressure pipe and flange connection structure, including a valve and a pipe connected to the valve, which is characterized in that a first method is fixed at one end of the pipe. The orchid plate has an inner ring gear plate sliding on the pipe. The outer ring gear is rotated on the outside of the inner ring gear plate. At least three nuts are evenly distributed between the outer ring teeth and the inner ring gear plate. One end of the nut is connected to the inner ring gear respectively. The disc and the outer ring teeth are meshed and connected. The other end of the nut is threadedly connected to the first flange. The other end of the nut passes through the first flange and is connected to the fixed plate. The fixed plate is slidably located in the first flange. The valve is provided with There is at least one second flange, and the second flange is provided with a limiting groove that is sealingly engaged with the fixed plate; the number of the second flange is the same as the number of pipes connected to it.

Preferably, the other end of the nut is arranged in the fixed plate to rotate without causing axial displacement with the fixed plate.

Preferably, the first flange is provided with a first annular slide, the fixed plate is slidably provided in the first annular slide, the second flange is provided with a second annular slide, and the fixed plate and the second The annular slideway matches; when the fixed plate slides from the first annular slideway into the second annular slideway and cannot be pushed, the fixed plate engages with the second annular slideway; the limiting groove is the second annular slideway.

Preferably, an annular rubber pad is fixed on the fixed plate, and the annular rubber pad matches the second annular slideway; when the fixed plate slides from the first annular slideway to the second annular slideway and cannot be pushed, the annular rubber pad The rubber gasket is in sealing and snap-fitting with the second annular slideway.

Preferably, the annular rubber pad is fixed with fixed rods arranged in a circular array; the second flange plate is provided with slots arranged in a circular array, and the slots are connected to the second annular slideway, and each fixed rod is arranged in a circular array. The positions correspond to the positions of the slots respectively; when the fixing plate slides from the first annular slideway to the second annular slideway and cannot be pushed, each fixing rod snaps into fit with its corresponding slot.

Preferably, the first flange is provided with threaded holes arranged in a circular array, and the thread at the other end of the nut is provided in the threaded hole; the first annular slideway is connected with the threaded hole.

Preferably, the pipeline is fixed with guide blocks arranged in a circular array, the inner wall of the inner ring gear plate is provided with a chute that matches the guide block, and the inner ring gear plate is slidably mounted on the guide block through the chute.

Preferably, the inner ring gear plate is provided with an annular groove, and a ring plate is rotated in the annular groove; a connecting plate arranged in a circular array is fixed on the ring plate, and the outer ring teeth are fixed on the connecting plate.

Compared with the existing technology, the steel pressure pipe and flange connection structure provided by the utility model has the following beneficial effects:

Through the rotation of the outer ring teeth on the pipe, the nut on the first flange engages and rotates with the inner ring gear, and the nut pushes the fixed plate in the first flange, causing the fixed plate to move toward the valve, and the fixed plate passes Slide and snap onto the valve to secure the pipe and valve.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of a steel pressure pipe and flange connection structure;

Figure 2 is a schematic cross-sectional view of the second flange on the pipe and valve;

Figure 3 is an enlarged structural schematic diagram of part A in Figure 2;

Figure 4 is an enlarged structural schematic diagram of part B in Figure 2;

Figure 5 is a schematic structural diagram of the pipeline and the first flange;

Figure 6 is a left structural diagram of the pipeline and the first flange;

Figure 7 is a schematic structural diagram of the second flange.

Explanation of reference symbols:

1. Pipe; 2. Valve; 3. First flange; 4. Second flange; 5. Outer ring teeth; 6. Nut; 7. Inner ring gear plate; 31. First annular slideway; 41 , the second annular slideway; 42. Card slot; 51. Connecting plate; 52. Ring plate; 61. Fixed plate; 62. Annular rubber pad; 63. Fixed rod; 71. Guide block; 72. Ring groove.

Detailed ways

In order to make the present invention more obvious and easy to understand, preferred embodiments are described in detail below along with the accompanying drawings.

The utility model provides a steel pressure pipe and flange connection structure, as shown in Figures 1 to 7, which includes a pipe 1 and a valve 2, and also includes:

The inner ring gear 7 is slidably mounted on the pipe 1 (slides along the length of the pipe 1);

The first flange 3 is fixedly installed at one end of the pipeline 1 (the end close to the valve 2);

One end of the nut 6 is engaged with the inner ring gear 7, and the other end is threaded on the first flange 3;

The outer ring gear 5 is rotated on the inner ring gear 7 and meshes with the nut 6;

The fixed plate 61 is driven to slide in the first flange 3 .

Specifically, as can be seen from Figures 1 to 4, by continuously rotating the two outer ring teeth 5 on the two pipes 1, the outer ring teeth 5 drive the four nuts 6 to rotate axially through meshing, so that the four nuts 6 engages and rotates with the inner ring gear 7. Through the engagement and rotation, one end of the nut 6 is threadedly rotated on the first flange 3, so that the nut 6 slides from a low position to a high position on the first flange 3 (as shown in the figure 2, it can be seen that the two sides of pipe 1 are low and the center of pipe 1 is high).

Secondly, as can be seen from Figures 1 to 4, when the four nuts 6 slide on the first flange 3, they drive the inner ring gear 7 to slide, and the four nuts 6 push the fixing plate 61 to position on the first flange. 3, so that the fixed plate 61 moves toward the valve 2, and the two fixed plates 61 slide to a high position and are connected to the valve 2, so that the pipe 1 and the valve 2 at both ends are clamped and fixed.

In the above technical solution, the outer ring gear 5 on the pipe 1 rotates, so that the nut 6 on the first flange 3 meshes with the inner ring gear 7 and rotates, and the nut 6 pushes the fixed plate in the first flange 3 61, so that the fixed plate 61 moves toward the valve 2, and the fixed plate 61 is slidably connected to the valve 2 to secure the pipeline 1 and the valve 2.

As a further embodiment of the present invention, the pipe 1 is fixedly provided with guide blocks 71 arranged in a circular array, and the inner ring gear 7 is slidably disposed on the guide blocks 71 .

Further, an annular groove 72 is provided on the inner ring gear 7, and a ring plate 52 is rotatably provided in the annular groove 72;

The ring plate 52 is fixedly provided with connecting plates 51 arranged in a circular array, and the outer ring teeth 5 are fixedly installed on the connecting plates 51 .

Specifically, as can be seen from Figures 1 to 3, the inner ring gear plate 7 is guided by the four guide blocks 71 on the pipe 1, so that the inner ring gear plate 7 can slide from a low position to a high position (that is, along the pipe 1 axial sliding), and the fixation of the four guide blocks 71 can limit the inner ring gear plate 7 from rotating following the rotation of the four nuts 6 (the teeth engaged between the inner ring gear plate 7 and the nut 6 are arranged obliquely , through the rotation of the nut 6, the inner ring gear 7 slides along the guide block 71).

Secondly, as can be seen from Figures 1 to 3, the outer ring teeth 5 are connected to the ring plate 52 through a plurality of connecting plates 51. At the same time, the ring plate 52 rotates in the ring groove 72, so that the outer ring teeth 5 pass through the connecting plates 51. The inner ring gear 7 is supported with supporting force, and the outer ring gear 5 can rotate.

As a further embodiment of the present invention, the first flange 3 is provided with threaded holes arranged in a circular array, and the nuts 6 are threadedly provided in the threaded holes;

A first annular slideway 31 is provided on the first flange 3 . The first annular slideway 31 is connected with the threaded hole. The fixing plate 61 is limitedly connected to one end of the nut 6 and slides in the first annular slideway 31 ; The nut 6 can rotate freely on the fixed plate 61 and does not produce axial displacement with the fixed plate 61 .

An annular rubber pad 62 is fixed on the fixed plate 61 , and a fixed rod 63 arranged in a circular array is fixed on the annular rubber pad 62 .

Further, it also includes a second flange 4 (located at the valve inlet and outlet) symmetrically fixed on the valve 2, and a second annular slideway 41 is provided on the second flange 4;

The second flange 4 is provided with clamping slots 42 arranged in a circular array. The clamping slots 42 are connected with the second annular slideway 41 , and the fixing plate 61 is engaged with the second annular slideway 41 .

Each fixing rod 63 is snap-fitted with its corresponding slot 42 .

Specifically, as can be seen from Figures 4 to 7, the four nuts 6 on both sides are driven by the two outer ring teeth 5, so that the four nuts 6 on both sides are simultaneously located in the four threaded holes on both sides for low positioning. To move to the high position, the fixed plate 61 is pushed by the four nuts 6, so that the fixed plate 61 is located in the first annular slideway 31 and slides from the low position to the high position (as can be seen from Figure 4, both sides of the first flange 3 is a low position, and the center of the first flange 3 is a high position).

Secondly, it can be seen from Figures 4 to 7 that when the two fixed plates 61 slide to the high position and continue to slide in the direction of the two second flanges 4 fixed on the valve 2, when the fixed plates 61 slide to the high position At this time, the annular rubber pad 62 slides into the second annular slideway 41 for sealing and fastening. At the same time, the fixing plate 61 is clamped between the gap between the first flange 3 and the second flange 4 to ensure that the first flange The disc 3 is effectively fixed after being connected to the second flange 4, and several fixing rods 63 on the annular rubber pad 62 are pushed and inserted into the slot 42 by the fixing plate 61, so that the first flange 3 Perform secondary fastening with the second flange 4.

Finally, as can be seen from Figures 4 to 7, when it is necessary to disassemble and replace, you only need to rotate the outer ring tooth 5 in the opposite direction, so that the nut 6 slides to a lower position, driving the fixing plate 61 to separate from the second annular shape of the second flange 4 In the slideway 41, the engagement between the first flange 3 and the second flange 4 is released. As the fixing plate 61 slides to the lower position, the fixing rod 63 is also separated from the slot 42. When the fixing rod 63 and the fixing plate When 61 is completely separated from the second flange 4, the valve 2 can be removed directly.

The working principle of this utility model is as follows:

It can be seen from Figures 1 to 7 that the second flange 4 and the first flange 3 are aligned. After alignment, the outer ring teeth 5 are connected to the ring plate 52 through multiple connecting plates 51, and the ring plate 52 The outer ring teeth 5 are rotated in the ring groove 72 so that the outer ring teeth 5 are supported by the inner ring gear plate 7 through the support of the connecting plate 51, and the outer ring teeth 5 can rotate. At this time, the two outer ring teeth on the two pipes 1 continue to rotate. The ring teeth 5 make the outer ring teeth 5 drive the four nuts 6 to rotate axially through meshing, so that the four nuts 6 mesh and rotate with the inner ring gear 7. Through the meshing rotation, one end of the nuts 6 is on the first flange 3 The thread is rotated so that the nut 6 slides from a low position to a high position on the first flange 3. At the same time, the four guide blocks 71 on the pipe 1 guide the inner ring gear 7 so that the inner ring gear 7 can move to a low position. Slide to the high position, and the inner ring gear 7 can be restricted from rotating by following the rotation of the four nuts 6 through the fixation of the four guide blocks 71. When the two fixed plates 61 slide to the high position, and move toward the valve 2. The direction of the two second flanges 4 continues to slide. When the fixed plate 61 slides to a high position, the annular rubber pad 62 slides into the second annular slide 41 for sealing and fastening. At the same time, the fixed plate 61 is clamped in the first method. The gap between the flange 3 and the second flange 4 ensures that the first flange 3 and the second flange 4 are effectively fixed after they are connected, and are fixed by several fixing rods 63 on the annular rubber pad 62 The fixing plate 61 is pushed and inserted into the clamping groove 42 so that the first flange 3 and the second flange 4 are clamped for a second time.

When disassembling and replacing, it is only necessary to rotate the two outer ring teeth 5 in the opposite direction, so that the nut 6 slides to a lower position, driving the fixing plate 61 out of the second annular slide 41 of the second flange 4, and releasing the first flange. 3 is engaged with the second flange 4. Due to the sliding of the fixed plate 61 to the lower position, the fixed rod 63 is also separated from the slot 42. When the fixed rod 63 and the fixed plate 61 are completely separated from the second flange 4, you can Remove valve 2 directly.

Claims (8)

1. The utility model provides a steel pressure pipeline and flange connection structure, includes valve (2) and pipeline (1) of being connected with valve (2), its characterized in that, pipeline (1) one end be fixed with first ring flange (3), slide on pipeline (1) and be equipped with inner ring fluted disc (7), inner ring fluted disc (7) outside rotates and is equipped with outer ring tooth (5), equipartition has at least three nut (6) between outer ring tooth (5) and inner ring fluted disc (7), nut (6) one end respectively with inner ring fluted disc (7), outer ring tooth (5) meshing is connected, nut (6) other end and first ring flange (3) threaded connection, nut (6) other end pass first ring flange (3) and fixed plate (61) are connected, fixed plate (61) slide are located in first ring flange (3), be equipped with at least one second ring flange (4) on valve (2), be equipped with the spacing groove of fixed plate (61) sealing joint in the second ring flange (4); the number of the second flanges (4) is the same as the number of the pipelines (1) connected with the second flanges.

2. A steel pressure pipe and flange connection structure according to claim 1, characterized in that the other end of the nut (6) is arranged in the fixing plate (61) to rotate and not to displace axially with the fixing plate (61).

3. The steel pressure pipeline and flange connection structure according to claim 1, characterized in that the first flange plate (3) is provided with a first annular slideway (31), the fixed plate (61) is slidably arranged in the first annular slideway (31), the second flange plate (4) is provided with a second annular slideway (41), and the fixed plate (61) is matched with the second annular slideway (41); when the fixed plate (61) slides into the second annular slide way (41) from the first annular slide way (31) and cannot be pushed, the fixed plate (61) is in clamping fit with the second annular slide way (41); the limit groove is a second annular slideway (41).

4. A steel pressure pipe and flange connection according to claim 3, characterized in that the fixing plate (61) is fixed with an annular rubber pad (62), the annular rubber pad (62) being matched with the second annular slideway (41); when the fixed plate (61) slides into the second annular slide way (41) from the first annular slide way (31) and cannot be pushed, the annular rubber pad (62) is matched with the second annular slide way (41) in a sealing clamping way.

5. A steel pressure pipe and flange connection structure according to claim 4, characterized in that the annular rubber pad (62) is fixed with fixing rods (63) arranged in a circumferential array; clamping grooves (42) which are arranged in a circumferential array are formed in the second flange plate (4), the clamping grooves (42) are communicated with the second annular slide way (41), and the positions of the fixing rods (63) are respectively in one-to-one correspondence with the positions of the clamping grooves (42); when the fixing plate (61) slides into the second annular slide way (41) from the first annular slide way (31) and cannot be pushed, each fixing rod (63) is clamped and matched with the corresponding clamping groove (42).

6. A steel pressure pipeline and flange connection structure according to claim 3, characterized in that the first flange (3) is provided with threaded holes arranged in a circumferential array, and the threads at the other end of the nut (6) are arranged in the threaded holes; the first annular slideway (31) is communicated with the threaded hole.

7. The steel pressure pipeline and flange connection structure according to claim 1, characterized in that the pipeline (1) is fixedly provided with guide blocks (71) which are arranged in a circumferential array, the inner wall of the inner annular fluted disc (7) is provided with sliding grooves matched with the guide blocks (71), and the inner annular fluted disc (7) is arranged on the guide blocks (71) in a sliding manner through the sliding grooves.

8. A steel pressure pipeline and flange connection structure according to claim 1 or 7, characterized in that the inner ring fluted disc (7) is provided with a ring groove (72), and the ring groove (72) is rotationally provided with a ring plate (52); the annular plate (52) is fixedly provided with connecting plates (51) which are arranged in a circumferential array, and the outer ring teeth (5) are fixed on the connecting plates (51).