A quick pressure test flange

Abstract

The utility model discloses a kind of quick pressure test flanges, including flange and connecting part: the both sides of the flange plate are provided with several connecting grooves, the inside of the flange plate is provided with hydraulic oil passage, the hydraulic oil passage is communicated with the bottom of connecting groove, the connecting part is arranged in the inside of the flange plate, the connecting part has screw rod arranged in the inside of connecting groove, the inside of the connecting groove is embedded with end cap and is provided with through hole, the outside of the flange plate is rotatably provided with rotating ring, the outside of the rotating ring is provided with oil inlet. The utility model is provided with connecting part, when needing to carry out pressure test to flange, rotating ring is rotated to make oil inlet communicate with hydraulic oil passage, then hydraulic oil is injected into hydraulic oil passage by oil inlet, hydraulic oil enters connecting groove bottom and pushes slide column to slide upwards, slide column drives screw rod to move upwards and compresses disc spring, the movement of screw rod can be used to connect other components to carry out pressure test operation, the function of quickly carrying out pressure test to flange is realized.

Description

Technical Field

[0001] This utility model relates to the field of connecting flange technology, specifically a fast pressure testing flange. Background Technology

[0002] A quick-test flange is a key device for pipeline connection and pressure testing. It connects two flanges together using tension bolts and can simultaneously tighten multiple bolts quickly, ultimately achieving a reliable connection between pipelines, improving work efficiency, and shortening pressure test preparation time.

[0003] Existing quick-connect flanges typically use hydraulic drive to achieve rapid connection. Specifically, this type of flange uses an oil pump to supply high-pressure oil through high-pressure oil inlets and outlets into multiple connection slots. The high-pressure oil pushes multiple connecting bolts to move, achieving a tight connection. Existing quick-connect flanges have multiple oil inlets. During connection, operators need to connect the oil pipes sequentially to each inlet, and after the pressure test, they must disconnect the oil pipes from each inlet one by one. This repeated process of connecting and disconnecting the oil pipes is extremely cumbersome, increasing the workload of operators and significantly reducing the efficiency of flange connection and disassembly. Utility Model Content

[0004] The purpose of this invention is to provide a rapid pressure testing flange to address the problem mentioned in the background section: existing rapid pressure testing flanges have multiple oil inlets, requiring operators to connect the oil pipe sequentially to each inlet during connection, and then disconnect the oil pipe from each inlet after the pressure test. This repeated disassembly and reassembly process is extremely cumbersome, increasing the workload of operators and significantly reducing the efficiency of flange connection and disassembly.

[0005] To solve the above problems, this utility model provides the following technical solution: a rapid pressure testing flange, comprising a flange and a connecting part:

[0006] The flange has several connecting grooves on both sides and a hydraulic oil passage inside, which is connected to the bottom of the connecting groove. The connecting part is located inside the flange and has a screw inside the connecting groove. The bottom of the screw has a sliding column, which is slidably connected to the connecting groove. A disc spring is nested outside the screw. An end cap with a through hole is embedded inside the connecting groove. The screw passes through the end cap and is vertically slidably connected to the screw. The disc spring is located between the sliding column and the end cap. A rotating ring is rotatably mounted on the outside of the flange. An oil inlet is located on the outside of the rotating ring. The rotation of the rotating ring causes the oil inlet to move and connect to the hydraulic oil passage.

[0007] By adopting the above technical solution, when it is necessary to test the flange, the rotating ring can be rotated to connect the oil inlet with the hydraulic oil channel. Then, hydraulic oil is injected into the hydraulic oil channel through the oil inlet. The hydraulic oil enters the bottom of the connecting groove and pushes the sliding column upward. The sliding column drives the screw to move upward and compress the disc spring. The movement of the screw can be used to connect other components for pressure testing, thereby realizing the function of quickly testing the flange.

[0008] Preferably, the flange also has a rotating groove formed around the outer side of the flange, wherein the rotating ring is embedded in the rotating groove and rotatably connected to the flange.

[0009] By adopting the above technical solution, the swivel ring can be made to rotate stably on the flange.

[0010] Preferably, a sealing ring is embedded on the inner side of the rotating ring and abuts against the flange.

[0011] By adopting the above technical solution, it is possible to prevent hydraulic oil from leaking from the connection between the rotating ring and the flange when hydraulic oil is injected through the oil inlet and hydraulic oil passage, thus ensuring the sealing of the hydraulic system.

[0012] Preferably, the connecting groove is provided in a plurality of them, and the plurality of connecting grooves are arranged in a central rotational symmetry structure around the center of the flange. A sealing ring is embedded on the outer side of the sliding column and abuts against the connecting groove.

[0013] By adopting the above technical solution, the flange can be subjected to more uniform stress during the pressure test.

[0014] Preferably, the inner diameter of the hydraulic oil passage is smaller than the inner diameter of the oil outlet, the inlet of the hydraulic oil passage is chamfered, and the internal thread of the oil outlet is fitted with a bolt plug.

[0015] By adopting the above technical solution, hydraulic oil can flow more smoothly from the oil inlet into the hydraulic oil channel, reducing the resistance to hydraulic oil flow. The bolt plug inside the oil inlet can block the oil inlet when hydraulic oil is not needed, preventing external dust, debris and other contaminants from entering the oil inlet.

[0016] Preferably, the flange also has a triangular mark a surrounding the outer side of the flange, the position of which corresponds to the position of the hydraulic oil passage, and a triangular mark b is provided on the outer side of the rotating ring, the position of which corresponds to the oil inlet.

[0017] By adopting the above technical solution, it is possible to quickly and accurately determine whether the oil inlet is connected to the hydraulic oil channel by observing the alignment of the triangular markers a and b when rotating the rotating ring.

[0018] Preferably, several of the screws are arranged symmetrically in a mirror image along the central axis of the flange, and the outward-facing ends of several of the screws are threaded with nuts.

[0019] By adopting the above technical solution, after the screw is connected to other components, the connected components can be further fixed by tightening the nut.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: by providing a connecting part, when it is necessary to test the flange, the rotating ring can be rotated to connect the oil inlet with the hydraulic oil channel, and then hydraulic oil can be injected into the hydraulic oil channel through the oil inlet. The hydraulic oil enters the bottom of the connecting groove and pushes the sliding column to slide upward. The sliding column drives the screw to move upward and compress the disc spring. The movement of the screw can be used to connect other components for pressure testing operations, thereby realizing the function of quickly testing the flange. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this application;

[0022] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this application;

[0023] Figure 3 This is a schematic diagram of the flange structure of this application;

[0024] Figure 4 This is a schematic diagram of the rotating ring structure of this application.

[0025] In the diagram: 1. Flange; 101. Connecting groove; 102. Rotating groove; 103. Triangle a; 104. Hydraulic oil passage; 2. Connecting part; 201. Screw; 202. Sliding column; 203. Disc spring; 204. End cap; 205. Nut; 206. Rotating ring; 207. Oil inlet; 208. Bolt plug; 209. Triangle b. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1

[0028] Please see Figure 1 , Figure 2 and Figure 3 This embodiment provides a technical solution: a rapid pressure testing flange, including a flange 1 and a connecting part 2.

[0029] Several connecting grooves 101 are provided on both sides of the flange 1. A hydraulic oil passage 104 is provided inside the flange 1. The hydraulic oil passage 104 is connected to the bottom of the connecting groove 101. The connecting part 2 is located inside the flange 1. The connecting part 2 has a screw 201 located inside the connecting groove 101. A sliding column 202 is provided at the bottom of the screw 201. The sliding column 202 is slidably connected to the connecting groove 101. A disc spring 203 is nested outside the screw 201. An end cover 204 is embedded inside the connecting groove 101 and has a through hole. The screw 201 passes through the end cover 204 and is vertically slidably connected to the screw 201. The disc spring 203 is located between the sliding column 202 and the end cover 204. A rotating ring 206 is rotatably provided on the outside of the flange 1. An oil inlet 207 is provided on the outside of the rotating ring 206. The rotation of the rotating ring 206 causes the oil inlet 207 to move and connect with the hydraulic oil passage 104.

[0030] When a flange needs to be pressure tested, the rotating ring 206 can be rotated to connect the oil inlet 207 with the hydraulic oil passage 104. Then, hydraulic oil is injected into the hydraulic oil passage 104 through the oil inlet 207. The hydraulic oil enters the bottom of the connecting groove 101 and pushes the slide column 202 to slide upward. The slide column 202 drives the screw 201 to move upward and compress the disc spring 203. The movement of the screw 201 can be used to connect other components for pressure testing, thus realizing the function of quickly testing the flange.

[0031] Example 2

[0032] Please see Figure 2 , Figure 3 and Figure 4 This embodiment provides a technical solution: a rapid pressure testing flange, including a flange 1 and a connecting part 2.

[0033] A rotating groove 102 is formed on the outer side of the flange 1. The rotating ring 206 is embedded in the rotating groove 102 and rotatedly connected to the flange 1, so that the rotating ring 206 can rotate stably on the flange 1.

[0034] A sealing ring is embedded on the inner side of the rotating ring 206 and abuts against the flange 1. This prevents hydraulic oil from leaking from the connection between the rotating ring 206 and the flange 1 when hydraulic oil is injected through the oil inlet 207 and the hydraulic oil passage 104, thus ensuring the sealing of the hydraulic system.

[0035] Several connecting grooves 101 are provided, and the several connecting grooves 101 are arranged in a central rotational symmetric structure around the center of the flange 1. A sealing ring is embedded on the outside of the sliding column 202 and abuts against the connecting groove 101, which can make the flange 1 more evenly stressed during the pressure test.

[0036] The inner diameter of the hydraulic oil passage 104 is smaller than the inner diameter of the oil inlet 207. The inlet of the hydraulic oil passage 104 is chamfered. The internal thread of the oil inlet 207 is provided with a bolt plug 208, which allows the hydraulic oil to flow more smoothly from the oil inlet 207 into the hydraulic oil passage 104 and reduces the resistance to the flow of hydraulic oil. When the hydraulic oil is not needed, the bolt plug 208 in the oil inlet 207 can block the oil inlet 207 to prevent external dust, debris and other objects from entering the oil inlet 207.

[0037] A triangular mark a103 is set around the outer edge of flange 1, and the position of triangular mark a103 corresponds to the position of hydraulic oil passage 104. A triangular mark b209 is set on the outer edge of rotating ring 206, and the position of triangular mark b209 corresponds to oil inlet 207. In actual use, oil inlet 207 needs to be connected to oil pump through connecting pipe. High pressure oil is introduced into hydraulic oil passage 104 through oil pump via oil inlet 207. The setting of triangular mark b209 can quickly and accurately determine whether oil inlet 207 is connected to hydraulic oil passage 104 by observing the alignment of triangular mark a103 and triangular mark b209 when rotating rotating ring 206.

[0038] Several screws 201 are arranged symmetrically in mirror image along the central axis of flange 1. The outward end of each screw 201 is threaded with a nut 205, which can be used to further fix the connected components by tightening the nut 205 after the screws 201 are connected to other components.

[0039] Working principle: First, under normal conditions, a bolt plug 208 is installed inside the oil inlet 207 to prevent external dust, debris, etc. from entering the oil inlet 207 and the hydraulic oil passage 104. When a pressure test is required on the flange, the operator manually rotates the rotating ring 206. By observing the alignment of the triangular mark a103 on the outside of the flange 1 and the triangular mark b209 on the outside of the rotating ring 206, the operator can quickly and accurately rotate the oil inlet 207 to the position where it connects with the hydraulic oil passage 104. Next, the oil inlet 207 is connected to the oil pump via a connecting pipe. The oil pump is started, and the oil pump injects high-pressure oil into the hydraulic oil channel 104 through the oil inlet 207. Because the inner diameter of the hydraulic oil channel 104 is smaller than the inner diameter of the oil inlet 207 and the inlet is chamfered, the hydraulic oil can flow more smoothly into the hydraulic oil channel 104, reducing flow resistance. The high-pressure oil enters the bottom of the connecting groove 101 along the hydraulic oil channel 104, pushing the slide column 202 to slide upward. The slide column 202 drives the screw 2 connected to it. 01 moves upward, simultaneously compressing the disc spring 203 located between the slide column 202 and the end cover 204. Because several connecting grooves 101 are centrally rotationally symmetrical around the center of the flange 1, and several screws 201 are mirror-symmetrically arranged along the central axis of the flange 1, each screw 201 can move upward synchronously, making the flange 1 more evenly stressed during the pressure test. After the screw 201 extends upward, it connects other components that need to be pressure tested to the screw 201. After the connection is completed, the operator tightens the nut 205 of the threaded connection at the outward end of the screw 201 to further fix the connected components and enhance the stability and reliability of the connection. After the pressure test is completed, the oil pump is stopped, and the pressure of the hydraulic oil is slowly reduced. Under the elastic restoring force of the disc spring 203, the slide column 202 and the screw 201 move downward back to the initial position. Finally, the connecting pipe is removed, and the bolt plug 208 in the oil inlet 207 is reinstalled to prepare for the next pressure test.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fast pressure testing flange, characterized in that, include: The flange has several connecting grooves on both sides and a hydraulic oil passage inside, which is connected to the bottom of the connecting grooves. The connecting part is located inside the flange. The connecting part has a screw installed inside the connecting groove. The bottom of the screw has a sliding column that is slidably connected to the connecting groove. A disc spring is nested outside the screw. An end cap is embedded inside the connecting groove and has a through hole. The screw passes through the end cap and is vertically slidably connected to it. The disc spring is located between the sliding column and the end cap. A rotating ring is rotatably installed on the outside of the flange. An oil inlet is provided on the outside of the rotating ring. The rotation of the rotating ring causes the oil inlet to move and connect to the hydraulic oil passage.

2. The rapid pressure testing flange according to claim 1, characterized in that: The flange also has a rotating groove formed around the outer side of the flange, and the rotating ring is embedded in the rotating groove and rotatably connected to the flange.

3. The rapid pressure testing flange according to claim 2, characterized in that: The inner side of the rotating ring is fitted with a sealing ring and abuts against the flange.

4. The rapid pressure testing flange according to claim 1, characterized in that: The connecting groove is provided in several parts, and the connecting groove is arranged in a central rotational symmetry structure around the center of the flange. A sealing ring is embedded on the outside of the sliding column and abuts against the connecting groove.

5. A rapid pressure testing flange according to claim 1, characterized in that: The inner diameter of the hydraulic oil passage is smaller than the inner diameter of the oil inlet. The inlet of the hydraulic oil passage is chamfered, and the internal thread of the oil inlet is fitted with a bolt plug.

6. A rapid pressure testing flange according to claim 1, characterized in that: The flange also has a triangular mark a surrounding the outer side of the flange, the position of which corresponds to the position of the hydraulic oil passage, and a triangular mark b on the outer side of the rotating ring, the position of which corresponds to the oil inlet.

7. A rapid pressure testing flange according to claim 1, characterized in that: Several of these screws are arranged symmetrically in a mirror image along the central axis of the flange, and several of these screws have nuts threaded to their outward-facing ends.

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