Tool for pressure test of self-anchored pressure flange

Abstract

A tool for pressure testing of a self-anchored pressure flange comprises a bearing plug and an inserting plug matched with the bearing plug, the outer diameter of the bearing plug is matched with the inner diameter of a center hole of the self-anchored pressure flange, a positioning device used for axially positioning the self-anchored pressure flange is arranged on the outer wall of the bearing plug, the inner diameter of the inserting plug is matched with the outer diameter of the bearing plug, and the outer diameter of the inserting plug is matched with the outer diameter of the bearing plug. A clamping tongue matched with a hook head bolt on the self-anchored pressing flange is arranged on the outer wall of the inserting plug, the bearing plug is coaxially inserted into the inserting plug, the outer wall of the bearing plug and the inner wall of the inserting plug are sealed through a sealing piece, and the self-anchored pressing flange is arranged outside the bearing plug in a sleeving mode. A hook-headed bolt of the self-anchored pressing flange is clamped and locked on a clamping tongue of the inserting plug, the bearing plug and the inserting plug are locked and fixed by matching with a positioning device, the inner cavity of the bearing plug and the inner cavity of the inserting plug are communicated to form a sealed pressurizing cavity, and a water inlet hole which is communicated with the pressurizing cavity and used for filling high-pressure water is formed in the top of the bearing plug. The self-anchored pressure flange is special for self-anchored pressure flanges, and is simple in structure, convenient to use and install, and convenient for daily repeated pressure test.

Description

TECHNICAL FIELD

[0001] The utility model relates to a self-anchored pressure test tool for pressure test of self-anchored pressure. BACKGROUND

[0002] The existing self-anchored pressure is generally installed on the pipe and tested as a whole, which can detect the strength and anchoring performance of the self-anchored pressure. However, the pipe is heavy, and the gantry crane is needed to move and install the tool for each test, which is time-consuming and laborious. Moreover, the test occupies a large area, and most importantly, the test is not targeted, which makes it difficult to accurately determine the cause of the problem when the problem occurs, affecting the test efficiency. SUMMARY

[0003] The utility model solves the problem of the prior art and provides a self-anchored pressure test tool for self-anchored pressure, which is easy to install and is used for self-anchored pressure.

[0004] To achieve the above-mentioned purpose, the utility model first provides a self-anchored pressure test tool, which comprises a plug and a plug-in plug matched with the plug. The outer diameter of the plug matches the inner diameter of the center hole of the self-anchored pressure. The outer wall of the plug is provided with a positioning device for axially positioning the self-anchored pressure. The inner diameter of the plug-in plug matches the outer diameter of the plug. The outer wall of the plug-in plug is provided with a latch matched with the hook bolt on the self-anchored pressure. The plug is coaxially inserted into the plug-in plug. The outer wall of the plug is sealed from the inner wall of the plug-in plug by a sealing element. The self-anchored pressure is fitted outside the plug. The hook bolt of the self-anchored pressure is clamped and locked on the plug-in plug latch, and the plug and the plug-in plug are locked and fixed in cooperation with the positioning device. The inner cavity of the plug and the plug-in plug is communicated to form a sealed pressurizing cavity. The top of the plug is provided with a water inlet hole for filling high-pressure water, which is communicated with the pressurizing cavity.

[0005] In this embodiment, the top outside of the plug is also provided with lifting lugs for convenient lifting.

[0006] In this embodiment, the positioning device comprises a retaining ring fixed on the outer wall of the plug and a retaining ring arranged between the outer wall of the plug and the inner wall of the self-anchored pressure. An angle is formed between the inner wall of the self-anchored pressure and the center shaft to form a limiting inclined surface. The inner diameter of the retaining ring matches the outer diameter of the plug. The outer side wall of the retaining ring is provided with an inclined surface matched with the limiting inclined surface. In the working state, the retaining ring is fitted on the outside of the plug and is limited by the retaining ring. The self-anchored pressure is fitted on the outside of the plug, and the limiting inclined surface of the self-anchored pressure abuts against the inclined surface of the retaining ring. The bottom of the self-anchored pressure abuts against the plug, and the hook bolt of the self-anchored pressure is clamped on the plug-in plug latch to fix the plug and the plug-in plug.

[0007] In this embodiment, the end outer wall of the plug inserted into the plug-in plug is provided with a chamfer to form a guide head for easy insertion into the inner cavity of the plug.

[0008] In the embodiment, the sealing member comprises a sealing rubber ring, and the inner wall of the plug is provided with a sealing groove matched with the sealing rubber ring, and the sealing rubber ring is arranged in the sealing groove.

[0009] In the embodiment, the middle part of the side of the sealing rubber ring facing the bottom surface of the plug is provided with an annular groove.

[0010] With the above structure, the utility model has the following advantages:

[0011] 1. The device is designed with a supporting plug and a plug, and the supporting plug and the plug are small in size and light in weight, facilitating the turnover and use, and realizing the convenience of self-anchored pressure vessel pressure test; the cooperation of the stop ring, the retaining ring and the sealing rubber ring on the outer wall of the supporting plug realizes good sealing effect, ensures the convenience and accuracy of the self-anchored pressure vessel installation, and guarantees the accuracy of the pressure test.

[0012] 2. The limiting inclined surface between the inner wall of the self-anchored pressure vessel and the central shaft and the inclined surface on the retaining ring accurately simulate the actual installation condition of the self-anchored pressure vessel, and simplify the pressure test operation process.

[0013] 3. The supporting plug is provided with an ear on the top, facilitating the lifting and moving of the tooling, and improving the convenience of operation.

[0014] 4. The middle part of the side of the sealing rubber ring facing the bottom surface of the plug is provided with an annular groove, when the pressure water enters the pressurizing cavity, the pressure water enters the position of the sealing rubber ring along the gap between the supporting plug and the plug, the pressure water enters the annular groove, the water pressure expands the annular groove, so that the two sides of the sealing rubber ring are further pressed against the supporting plug and the plug respectively, thereby improving the sealing effect.

[0015] In summary, the device is specially used for the self-anchored pressure vessel, is simple in structure, convenient to use and install, and is convenient for daily repeated pressure test. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the utility model.

[0017] Figure 2 It is Figure 1 It is an enlarged view of A.

[0018] Figure 3 It is a structure schematic view of the utility model.

[0019] Figure 4 It is a structure schematic view of the utility model.

[0020] In the attached diagram: 1. Plug; 11. Inlet hole; 12. Lifting lug; 13. Retaining ring; 14. Guide head; 2. Insert plug; 21. Clamping tongue; 22. Sealing groove; 3. Self-anchoring flange; 31. Hook bolt; 32. Limiting slope; 4. Retaining ring; 5. Sealing rubber ring; 51. Groove; 6. Pressurization chamber. Detailed Implementation

[0021] 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.

[0022] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] like Figures 1 to 4 As shown, a self-anchoring flange pressure testing fixture includes a bearing plug 1 and a matching plug 2. Both the bearing plug 1 and the plug 2 are cylindrical bodies with one open end and one sealed end. The top of the bearing plug 1 is the sealed end, and the bottom of the plug 2 is the sealed end. The top of the bearing plug 1 is provided with a lifting lug 12 for easy hoisting. The top of the bearing plug 1 is provided with a water inlet 11 for filling with high-pressure water, which communicates with its inner cavity. The bearing plug 1 is coaxially inserted into the plug 2. The inner cavities of the bearing plug 1 and the plug 2 communicate to form a sealed pressurizing cavity 6. The water inlet 11 communicates with the pressurizing cavity 6. The outer wall of the end of the bearing plug 1 that is inserted into the bearing plug 1 is provided with a chamfer to form a guide head 14 for easy insertion into the inner cavity of the bearing plug 1.

[0024] The outer diameter of the bearing plug 1 matches the inner diameter of the center hole of the self-anchoring flange 3. The outer wall of the bearing plug 1 is provided with a positioning device for axial positioning of the self-anchoring flange 3. The positioning device includes a retaining ring 13 fixed on the outer wall of the bearing plug 1 and a retaining ring 4 disposed between the outer wall of the bearing plug 1 and the inner wall of the self-anchoring flange 3. The inner wall of the self-anchoring flange 3 and its central axis are provided with an angle to form a limiting inclined surface 32. The inner diameter of the retaining ring 4 matches the outer diameter of the bearing plug 1. The outer wall of the retaining ring 4 faces the limiting inclined surface 32 of the self-anchoring flange 3. The outer wall of the retaining ring 4 is provided with an inclined surface that matches the limiting inclined surface 32. The retaining ring 4 is fitted on the outside of the bearing plug 1 and the limiting inclined surface 32 of the self-anchoring flange 3 contacts the inclined surface of the retaining ring 4.

[0025] The inner diameter of the plug 2 matches the outer diameter of the bearing 1, the outer wall of the plug 2 is provided with a clamping tongue 21 matched with a hook bolt 31 on the self-anchored pressure rod 3, the outer wall of the bearing 1 and the inner wall of the plug 2 are sealed by a sealing element, the sealing element comprises a sealing rubber ring 5, the inner wall of the plug 2 is provided with a sealing groove 22 matched with the sealing rubber ring 5, the sealing rubber ring 5 is installed in the sealing groove 22, the middle part of the side of the sealing rubber ring 5 facing the bottom surface of the plug 2 is provided with an annular groove 51, when the pressurized water enters the pressurizing cavity, the pressurized water enters the position of the sealing rubber ring 5 along the gap between the bearing 1 and the plug 2, the pressurized water enters the annular groove 51, the water pressure expands the annular groove 51, so that the two sides of the sealing rubber ring 5 are further pressed against the bearing 1 and the plug 2 respectively, thereby improving the sealing effect;

[0026] In the embodiment, the bearing 1 and the plug 2 are integrally cast by nodular cast iron, and the high strength, plasticity, toughness, wear resistance, resistance to severe thermal and mechanical impact, resistance to high or low temperature, corrosion resistance and dimensional stability of the nodular cast iron are fully utilized;

[0027] In work, the bearing 1 is coaxially inserted into the plug 2, the bearing 1 and the plug 2 are sealed by the sealing element, the self-anchored pressure rod 3 is sleeved on the bearing 1, the limiting inclined surface 32 of the self-anchored pressure rod 3 is in contact with the inclined surface of the stop ring 4, the bottom of the self-anchored pressure rod 3 abuts against the top surface of the bearing 1, then the hook bolt 31 of the self-anchored pressure rod 3 is clamped on the clamping tongue 21 of the plug 2 and locked, through the cooperation of the hook bolt 31 and the clamping tongue 21 and the cooperation of the limiting inclined surface 32 and the inclined surface of the stop ring 4, as shown in Figure 1 , the hook bolt 31 and the clamping tongue 21 are locked, at the same time, the hook bolt 31 gives the self-anchored pressure rod 3 a downward force, and then the downward force of the self-anchored pressure rod 3 is transmitted to the bearing 1 through the cooperation of the limiting inclined surface 32 and the inclined surface of the stop ring 4, so that the bearing 1 is pressed downward and the plug 2 is pressed upward; when the self-anchored pressure rod 3 needs to be pressure tested, high-pressure water is filled into the pressurizing cavity 6 through the water inlet hole 11 (in the embodiment, the high-pressure water is 10 MPa, and the high-pressure water is maintained for 10-20 minutes), at this time, the high-pressure water presses the bearing 1 and the plug 2 in the pressurizing cavity 6, and gives the bearing 1 and the plug 2 a separating force to resist the locking force of the self-anchored pressure rod 3, so as to realize the strength test of the self-anchored pressure rod 3.

[0028] The preferred embodiments are only used to illustrate the technical solutions of the present application, and do not limit the patent range of the present application, and any equivalent structure transformation made according to the contents of the present application and the drawings or directly / indirectly applied in other related technical fields is included in the patent protection range of the present application.

Claims

1. A self-anchored compression test tool for testing a pressure of a pressure pipe, characterized by: The application relates to a sealing plug (1) and a matching plug-in plug (2), wherein the sealing plug (1) has an outer diameter matching the inner diameter of the central hole of a self-anchored pressure rod (3), the outer wall of the sealing plug (1) is provided with a positioning device for axially positioning the self-anchored pressure rod (3), the inner diameter of the plug-in plug (2) matches the outer diameter of the sealing plug (1), the outer wall of the plug-in plug (2) is provided with a clamping tongue (21) matching the hook bolt (31) of the self-anchored pressure rod (3), the sealing plug (1) is coaxially inserted into the plug-in plug (2), the outer wall of the sealing plug (1) is sealed with the inner wall of the plug-in plug (2) through a sealing element, the self-anchored pressure rod (3) is sleeved on the sealing plug (1), the hook bolt (31) of the self-anchored pressure rod (3) is clamped and locked on the clamping tongue (21) of the plug-in plug (2), the sealing plug (1) and the plug-in plug (2) are locked and fixed through the matching positioning device, the inner cavities of the sealing plug (1) and the plug-in plug (2) are communicated to form a sealed pressurizing cavity (6), and the top of the sealing plug (1) is provided with a water inlet hole (11) communicating with the pressurizing cavity (6) and used for filling high-pressure water.

2. The self-anchored compression test tooling of claim 1, wherein: The top outer side of the sealing plug (1) is further provided with lifting lugs (12) for facilitating hoisting.

3. The self-anchored compression test tooling of claim 1, wherein: The positioning device comprises a stop ring (13) fixed on the outer wall of the sealing plug (1) and a stop ring (4) arranged between the outer wall of the sealing plug (1) and the inner wall of the self-anchored pressure rod (3), an included angle is formed between the inner wall of the self-anchored pressure rod (3) and the central shaft to form a limiting inclined surface (32), the inner diameter of the stop ring (4) matches the outer diameter of the sealing plug (1), and the outer side wall of the stop ring (4) is provided with an inclined surface matching the limiting inclined surface (32), in the working state, the stop ring (4) is sleeved on the outer side of the sealing plug (1) and is limited through the stop ring (13), the self-anchored pressure rod (3) is sleeved on the outer side of the sealing plug (1), the limiting inclined surface (32) of the self-anchored pressure rod (3) abuts against the inclined surface of the stop ring (4), the bottom of the self-anchored pressure rod (3) abuts against the sealing plug (1), and the hook bolt (31) of the self-anchored pressure rod (3) is clamped on the clamping tongue (21) of the plug-in plug (2) to fix the sealing plug (1) and the plug-in plug (2).

4. The self-anchored compression test tooling of claim 1, wherein: The end outer wall of the sealing plug (1) is provided with a chamfered guide head (14) for conveniently inserting into the inner cavity of the sealing plug (1).

5. The self-anchored compression test tooling of claim 1, wherein: The sealing element comprises a sealing rubber ring (5), the inner wall of the plug-in plug (2) is provided with a sealing groove (22) matching the sealing rubber ring (5), and the sealing rubber ring (5) is installed in the sealing groove (22).

6. The self-anchored compression test tooling of claim 5, wherein: The middle part of the side of the sealing rubber ring (5) facing the bottom surface of the plug-in plug (2) is provided with an annular groove (51).

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