Movable adapter flange convenient to center

Abstract

The utility model relates to the technical field of centrifugal pump high-pressure test pipeline connection, and discloses a movable adapter flange convenient to center, which comprises a middle bent pipe, one end of the middle bent pipe is fixedly connected with a base flange, the other end of the middle bent pipe is fixedly connected with a stop flange, the outer side of the middle bent pipe is sleeved with a movable flange, and the movable flange is fixedly connected with the stop flange. The diameter of an inner hole of the movable flange is smaller than the outer diameter of the stop flange, and the movable flange can move on the periphery of the middle bent pipe and rotate by 360 degrees. When two pipelines are connected, the positions of the bolt holes can be adjusted through rotation of the movable flange, installation inconvenience caused by dislocation of the bolt holes is avoided, rapid centering is facilitated by adjusting the positions of the bolt holes, meanwhile, the kidney-shaped holes are formed in the end face of the movable flange, and the bolt holes can be conveniently and rapidly centered. During high-pressure testing, the installation position of the bolt can be adjusted according to the actual pressure, different pressure experiment requirements are met, and waste of working hours and materials caused by repeated manufacturing of tools is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal pump high-pressure test pipeline connection, in particular to a movable adapter flange that is easy to center. Background Art

[0002] Before conducting a high-pressure test on a centrifugal pump, it is necessary to connect the pump's inlet and outlet to the test pipeline. The commonly used method is to weld flanges at the end faces of two connected pipes and fix the connection through the bolt holes on the flanges. However, due to the different center heights of different centrifugal pumps and the fixed nature of the pipeline layout of the test bench itself, it is often difficult to align the bolt holes when connecting the pipelines, which makes it difficult to connect and install the pipelines and increases the loss of working hours. In addition, different centrifugal pumps have different test pressures and require different flange specifications. Therefore, flanges of different specifications need to be made according to the test pressure, which increases material consumption. Utility Model Content

[0003] In order to make up for the above shortcomings, the utility model provides a movable adapter flange that is easy to align, aiming to improve the problem that the flanges of the high-pressure test pipe of the centrifugal pump are difficult to connect and the large number of flange specifications increases material consumption.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a movable adapter flange that is easy to align, including an intermediate bend pipe, one end of the intermediate bend pipe is fixedly connected to a base flange, the other end of the intermediate bend pipe is fixedly connected to a stop flange, a movable flange is sleeved on the outer side of the intermediate bend pipe, the inner hole diameter of the movable flange is smaller than the outer diameter of the stop flange, and the movable flange can move around the outer periphery of the intermediate bend pipe and rotate 360°.

[0005] Preferably, the middle elbow, the base flange and the stop flange are integrated.

[0006] Preferably, a waist-shaped hole is provided on the end surface of the movable flange.

[0007] Preferably, a rubber sealing gasket is provided on the side of the stop flange away from the movable flange.

[0008] Preferably, a connecting ring is provided on the outer edge of the rubber sealing gasket.

[0009] Preferably, the end surface of the rubber sealing gasket is provided with two circular rubber sealing rings, the end surface of the stop flange on the side away from the movable flange is provided with a circular groove, and one side of the rubber sealing ring is connected to the circular groove.

[0010] Preferably, a rubber sealing ring is provided on the inner side of the rubber sealing gasket.

[0011] Preferably, a support ring is provided inside the rubber sealing ring.

[0012] Preferably, the cross-sections of the rubber sealing ring and the support ring are both in a chevron shape.

[0013] Working principle: The movable transfer flange facilitating alignment includes an intermediate elbow. One end of the intermediate elbow is connected to the base flange, and the other end is connected to the stop flange. The three form an integral whole. An activity flange is sleeved outside the intermediate elbow. The inner hole diameter of the activity flange is smaller than the outer diameter of the stop flange, and it can move around the intermediate elbow and rotate 360°. When connecting pipelines, the position of the bolt holes can be adjusted by rotating the activity flange, facilitating quick alignment and reducing waste of working hours. There are waist-shaped holes on the end face of the activity flange. During high-pressure testing, the installation position of the bolts can be adjusted according to the actual pressure, meeting the requirements of different pressure experiments and avoiding waste of materials caused by repeated production of tooling. To ensure the smooth progress of the high-pressure test of the centrifugal pump, two circular grooves are opened on one side of the stop flange for placing two circular rubber sealing rings. The support ring and the rubber sealing ring can seal the inner side of the middle part of the stop flange, further improving the waterproof sealing performance.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, when connecting two pipelines, the position of the bolt holes can be adjusted by rotating the activity flange, avoiding the inconvenience of installation caused by misalignment of the bolt holes, facilitating quick alignment, and reducing waste of working hours.

[0016] 2. In the utility model, there are waist-shaped holes on the end face of the activity flange. During high-pressure testing, the installation position of the bolts can be adjusted according to the actual pressure, meeting the requirements of different pressure experiments and avoiding waste of working hours and materials caused by repeated production of tooling.

[0017] 3. In the utility model, two circular grooves are opened on one side of the stop flange for placing two circular rubber sealing rings. The support ring and the rubber sealing ring can seal the inner side of the middle part of the stop flange, further improving the waterproof sealing performance, facilitating the high-pressure test of the centrifugal pump under seal adjustment, and improving the experimental accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional view of the intermediate elbow of a movable transfer flange facilitating alignment proposed by the utility model;

[0019] Figure 2 is a schematic diagram of the waist-shaped hole of a movable transfer flange facilitating alignment proposed by the utility model;

[0020] Figure 3Stereogram of the rubber sealing gasket of a movable adapter flange facilitating centering proposed by the present utility model;

[0021] Figure 4 Exploded view of the rubber sealing gasket of a movable adapter flange facilitating centering proposed by the present utility model.

[0022] Legend description:

[0023] 1. Base flange; 2. Intermediate elbow; 3. Movable flange; 4. Stop flange; 401. Circular groove; 5. Waist-shaped hole; 6. Connecting ring; 7. Rubber sealing gasket; 701. Rubber sealing ring; 702. Rubber sealing ring; 703. Support ring. Specific implementation mode

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Refer to Figures 1-4 , an embodiment provided by the present utility model: As Figure 1 shown, the movable adapter flange facilitating centering of this embodiment includes an intermediate elbow 2. One end of the intermediate elbow 2 is fixedly connected to a base flange 1, and the other end of the intermediate elbow 2 is fixedly connected to a stop flange 4. An outer side of the intermediate elbow 2 is sleeved with a movable flange 3. The inner hole diameter of the movable flange 3 is smaller than the outer diameter of the stop flange 4. The movable flange 3 can move around the intermediate elbow 2 and rotate 360°. The intermediate elbow 2, the base flange 1, and the stop flange 4 are integrated. The movable flange 3 can move around the intermediate elbow 2 and rotate 360°. When connecting pipelines, the position of the bolt holes can be adjusted by rotating the movable flange 3, which facilitates quick centering and reduces waste of working hours.

[0026] A waist-shaped hole 5 is arranged on an end face of the movable flange 3. The design of the waist-shaped hole 5 can realize adjusting the bolt installation position according to the actual pressure magnitude during high-pressure testing, adapting to different pressure experiment requirements, and avoiding material waste caused by repeated manufacturing of tooling.

[0027] A rubber sealing gasket 7 is arranged on a side of the stop flange 4 away from the movable flange 3. The rubber sealing gasket 7 arranged on one side of the stop flange 4 is beneficial to waterproof sealing and improves the accuracy of the experiment.

[0028] A connecting ring 6 is arranged on an outer side edge of the rubber sealing gasket 7. The designed connecting ring 6 can press the rubber sealing gasket 7 on the outer side of the stop flange 4 to improve its stability.

[0029] On the end face of the rubber sealing gasket 7, there are two circular rubber sealing rings 701. On the end face of the stop flange 4 on the side away from the movable flange 3, there is a circular groove 401, and one side of the rubber sealing ring 701 is connected in the circular groove 401. By opening two circular grooves 401 on one side of the stop flange 4 for placing two circular rubber sealing rings 701, it can play a good role in sealing and waterproofing the sealing surface.

[0030] Inside the rubber sealing gasket 7, there is a rubber sealing ring 702. Inside the rubber sealing ring 702, there is a support ring 703. The cross-sections of both the rubber sealing ring 702 and the support ring 703 are in a herringbone shape. When the stop flange 4 is connected to the pipeline, the support ring 703 and the rubber sealing ring 702 can seal the inner gap of the stop flange 4, further improving the waterproof sealing performance and being beneficial to the smooth progress of the high-pressure test of the centrifugal pump.

[0031] During operation, it can be operated according to the following steps:

[0032] Step 1: Connect the base flange 1 to the end face flange of the pipeline.

[0033] Step 2: Adjust the movable flange 3 so that the waist-shaped hole 5 is aligned with the bolt holes on the flange end face of another pipeline.

[0034] Step 3: Adjust the position of the connecting bolt in the middle of the waist-shaped hole 5 according to the test pressure magnitude, and finally tighten it with a nut to complete the pipeline connection.

[0035] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A movable adapter flange for easy centering, comprising an intermediate elbow (2), characterized in that: One end of the intermediate curved pipe (2) is fixedly connected to a base flange (1), and the other end of the intermediate curved pipe (2) is fixedly connected to a stop flange (4). A movable flange (3) is sleeved on the outer side of the intermediate curved pipe (2). The inner diameter of the movable flange (3) is smaller than the outer diameter of the stop flange (4). The movable flange (3) can move around the outer periphery of the intermediate curved pipe (2) and rotate 360 ​​degrees.

2. The movable adapter flange for facilitating centering according to claim 1, characterized in that: The intermediate elbow (2), the base flange (1) and the stop flange (4) are integrated.

3. The movable adapter flange for facilitating centering according to claim 1, characterized in that: A waist-shaped hole (5) is provided on the end surface of the movable flange (3).

4. The movable adapter flange for facilitating centering according to claim 1, characterized in that: A rubber sealing gasket (7) is provided on the side of the stop flange (4) away from the movable flange (3).

5. The movable adapter flange for facilitating centering according to claim 4, characterized in that: A connecting ring (6) is provided on the outer edge of the rubber sealing gasket (7).

6. The movable adapter flange for facilitating centering according to claim 4, characterized in that: The end surface of the rubber sealing gasket (7) is provided with two circular rubber sealing rings (701), and the end surface of the stop flange (4) away from the movable flange (3) is provided with a circular groove (401), and one side of the rubber sealing ring (701) is connected to the circular groove (401).

7. The movable adapter flange for facilitating centering according to claim 4, characterized in that: A rubber sealing ring (702) is provided on the inner side of the rubber sealing gasket (7).

8. The movable adapter flange for facilitating centering according to claim 7, characterized in that: A support ring (703) is provided inside the rubber sealing ring (702).

9. The movable adapter flange for facilitating centering according to claim 8, characterized in that: The cross sections of the rubber sealing ring (702) and the supporting ring (703) are both in a herringbone shape.

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