An adjustable attemperator testing fixture

Abstract

The application relates to the technical field of desuperheater testing, and discloses an adjustable desuperheater testing tool. A ring flange base plate is arranged, screw holes and strip-shaped holes are arranged on the ring flange base plate, an adjusting screw rod is arranged in the screw holes, and a stretching plate is arranged in the strip-shaped holes. The stretching amount of the stretching plate can be controlled by rotating the adjusting screw bolt, and finally the stretching plate abuts against a pipeline clasp ring. Therefore, when matching desuperheater pipelines with different diameters, the application can match desuperheaters with different diameters by adjusting the stretching amount of the stretching plate through the adjusting screw rod. Therefore, the application can be used for testing the tool of desuperheaters with different diameters and different pressure grades, the purchase cost of additional sets of testing tools is reduced, and the detection efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of depressurizer testing technology, specifically to an adjustable depressurizer testing fixture. Background Technology

[0002] A desuperheater / pressure regulator is a key device used in industrial steam or gas systems to regulate pressure and temperature to meet the needs of downstream equipment. After the desuperheater / pressure regulator is assembled, its piping needs to undergo pressure resistance and leakage tests to verify the piping strength and sealing performance.

[0003] Testing of desuperheater and pressure-reducing device (DSP) pipelines requires the coordinated use of ring flanges and blind flanges. The ring flanges seal the blind flanges and press them tightly against the ends of the DSP pipelines to achieve a seal, after which pressure testing can be performed. In existing technology, DSP pipelines have different diameters, and different diameter pipelines require different sized ring flange base plate tooling, which undoubtedly increases production costs and severely impacts work efficiency. Utility Model Content

[0004] In view of the above problems, this application provides an adjustable desuperheater and pressure reducer test fixture, which can be adjusted according to the diameter of different desuperheater and pressure reducer pipes. One test fixture can meet the testing requirements of desuperheater and pressure reducer pipes of various diameters.

[0005] According to one aspect of the embodiments of this application, an adjustable depressurizer testing fixture is provided. The adjustable depressurizer testing fixture includes a coaxially arranged annular flange base plate and a blind flange. Both the annular flange base plate and the blind flange have multiple horizontal holes along their axial direction, spaced apart circumferentially along the blind flange and the annular flange base plate. A tension bolt passes through each horizontal hole. The annular flange base plate has sequentially connected threaded holes and strip-shaped holes from its outer cylindrical surface to its inner cylindrical surface. Multiple sets of threaded holes and strip-shaped holes are spaced apart axially along the annular flange base plate. An adjusting screw is screwed into each threaded hole, one end of which extends to the outer ring of the annular flange base plate. A tension plate is slidably disposed within each strip-shaped hole, one end of which is rotatably connected to the adjusting screw and extends to the inner ring of the annular flange base plate.

[0006] In some embodiments, the adjusting screw has a rotating end at one end extending to the outer ring of the annular flange base plate.

[0007] In some embodiments, the number of adjusting screws is six, and the six adjusting screws are equally spaced around the annular flange base plate.

[0008] In some embodiments, a sealing ring is provided between the blind flange and the desuperheater / pressure reducer pipe. The sealing ring is made of polytetrafluoroethylene and has an annular groove that matches the desuperheater / pressure reducer pipe.

[0009] In some embodiments, the axial direction of the stretching plate coincides with the radial direction of the ring flange, and the end of the stretching plate extending to the inner ring of the ring flange base plate has an arc-shaped end face.

[0010] In some embodiments, the adjusting screw has a disc-shaped protrusion at one end near the stretching plate, and the stretching plate has a T-shaped groove that matches the protrusion at one end.

[0011] In some embodiments, the annular flange base plate is formed by striking together a first base plate and a second base plate, both of which are annular, and the threaded hole and the strip hole are both formed on the first base plate, with the strip hole being open on the side closer to the second base plate.

[0012] The beneficial effects of this application are as follows: By setting a ring flange base plate, and providing threaded holes and strip holes on the ring flange base plate, setting an adjusting screw in the threaded hole and a tension plate in the strip hole, the extension of the tension plate can be controlled by rotating the adjusting screw. Finally, the tension plate will abut against the pipe retainer. Therefore, when matching desuperheater and pressure reducer pipes of different diameters, this application only needs to adjust the extension of the tension plate by adjusting the adjusting screw to match different desuperheater and pressure reducers of that diameter. Thus, this application can be used for tooling tests of desuperheater and pressure reducers of different diameters and pressure ratings, reducing the purchase cost of multiple sets of additional test tooling and improving testing efficiency.

[0013] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0014] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the overall installation structure of the device provided in the embodiments of this application; Figure 2 for Figure 1 Enlarged view at point B; Figure 3 for Figure 1 Enlarged view at point C; Figure 4 This is a partial structural diagram of the ring flange base plate provided in an embodiment of this application; Figure 5 This is a partial structural diagram of the first and second substrates provided in an embodiment of this application; Figure 6 This is a partial structural diagram of the adjusting screw and tension plate provided in an embodiment of this application.

[0015] The reference numerals in the detailed embodiments are as follows: Adjustable desuperheater and pressure reducer test fixture 100, ring flange base plate 110, first base plate 111, threaded hole 111a, strip hole 111b, second base plate 112, adjusting screw 113, rotating end 113a, protrusion 113b, tension plate 114, T-shaped groove 114a, blind flange 120, horizontal hole 130, tension bolt 131, sealing ring 140, annular groove 141, desuperheater and pressure reducer pipe 200, pipe retainer 210. Detailed Implementation

[0016] The embodiments of the technical solution of this application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and the foregoing description of the accompanying drawings are intended to cover non-exclusive inclusion.

[0017] For details, please refer to Figures 1 to 6 , Figure 1 This is a schematic diagram of the overall installation structure of the device provided in an embodiment of this application. Figure 2 for Figure 1 Enlarged view at point B, Figure 3 for Figure 1 A magnified view at point C. Figure 4 This is a partial structural diagram of the ring flange base plate provided in an embodiment of this application. Figure 5 This is a partial structural diagram of the first and second substrates provided in an embodiment of this application. Figure 6This is a partial structural diagram of the adjusting screw and tension plate provided in an embodiment of this application. The adjustable desuperheater and pressure reducer test fixture 100 includes a coaxially arranged annular flange base plate 110 and a blind flange 120. The annular flange base plate 110 is used to seal the blind flange 120 at the end of the desuperheater and pressure reducer pipeline 200. Both the annular flange base plate 110 and the blind flange 120 have multiple horizontal holes 130 along their axial direction. The multiple horizontal holes 130 are spaced apart circumferentially along the blind flange 120 and the annular flange base plate 110. A tension bolt 131 passes through the horizontal holes 130. During installation, the annular flange base plate 110 is located on one side of the pipeline retainer 210, and the blind flange 120 is located at the end of the pipeline. After tightening the tension bolt 131, the annular flange base plate 110 and the blind flange 120 will be tightened, thereby allowing the blind flange 120 to complete the sealing of the end of the desuperheater and pressure reducer pipeline 200. The pipe retainer 210 is integrally formed on the desuperheater / pressure reducer pipe 200. Threaded holes 111a and strip holes 111b are sequentially formed on the ring flange base plate 110 from its outer cylindrical surface to its inner cylindrical surface. Each threaded hole 111a and strip hole 111b forms a group, and multiple groups of threaded holes 111a and strip holes 111b are spaced apart along the axial direction of the ring flange base plate 110. An adjusting screw 113 is screwed into the threaded hole 111a, with one end of the adjusting screw 113 extending to the outer ring of the ring flange base plate 110. 3. The tension plate 114 can be slidably disposed in the threaded hole 111a and the strip hole 111b. One end of the tension plate 114 is rotatably connected to the adjusting screw 113. One end of the tension plate 114 extends to the inner ring of the ring flange base plate 110. After the threaded hole 111a is rotated, it can move towards the desuperheater pipe 200 along the direction of the threaded hole 111a, thereby pushing the tension plate 114 close to the pipe retainer 210 and abutting against one side of the pipe retainer 210. Conversely, when the adjusting screw 113 is rotated in the opposite direction, the tension plate 114 will move away from the pipe retainer 210.

[0018] In this embodiment, during operation, the blind flange 120 is placed at one end of the desuperheater and pressure reducer pipe 200, and the ring flange base plate 110 is sleeved on the side of the pipe retainer 210 away from the blind flange 120. The adjusting screw 113 is rotated, and the adjusting screw 113 causes the stretching plate 114 to extend to the side wall of the pipe retainer 210. During the rotation of the adjusting screw 113, it should be tightened one by one in a symmetrical manner. For example, first tighten the upper adjusting screw 113, then tighten the lower adjusting screw 113, and then the left and right sides in sequence. The adjusting screw 113 is tightened in a symmetrical manner and tightened in multiple sections. For example, when tightening the upper adjusting screw 113 for the first time, one-third of its total extension amount can be tightened and tightened in three stages. Then, the tension bolt 131 is inserted into the horizontal hole 130 and tightened. The tension plate 114 abuts against one side of the pipe clamp 210, and the blind flange 120 abuts against the end of the desuperheater and pressure reducer pipe 200. At this time, the sealing of the desuperheater and pressure reducer pipe 200 is completed.

[0019] In summary, this application, by setting a ring flange base plate 110, and providing threaded holes 111a and strip holes 111b on the ring flange base plate 110, setting an adjusting screw 113 in the threaded hole 111a, and setting a tension plate 114 in the strip hole 111b, the application can control the elongation of the tension plate 114 by rotating the adjusting screw. Finally, the tension plate 114 will abut against the pipe retainer 210. Thus, when matching desuperheater and pressure reducer pipes 200 of different diameters, this application only needs to adjust the elongation of the tension plate 114 by adjusting the adjusting screw 113 to match desuperheater and pressure reducers of different diameters. Therefore, this application can perform tooling tests for desuperheater and pressure reducers of different diameters and pressure levels, reducing the purchase cost of multiple sets of test tooling and improving testing efficiency.

[0020] In some embodiments, a rotating end 113a is provided at one end of the adjusting screw 113 extending to the outer ring of the annular flange base plate 110. In this embodiment, the rotating end 113a facilitates turning the adjusting screw 113, and a handwheel can be installed on the rotating end 113a for easy rotation.

[0021] In some embodiments, the number of adjusting screws 113 is six, and the six adjusting screws 113 are equally spaced and arranged around the annular flange base plate 110. In this embodiment, when the above-mentioned number of adjusting screws 113 is present, the uniform force of the strip plate on the pipe retainer 210 can be satisfied, and the complexity of operating the six adjusting screws 113 is within a reasonable range.

[0022] In some embodiments, a sealing ring 140 is provided between the blind flange 120 and the desuperheater / pressure reducer pipe 200. The sealing ring 140 is made of polytetrafluoroethylene (PTFE) and has an annular groove 141 machined on it to match the desuperheater / pressure reducer pipe 200. The sealing ring 140 further improves the sealing performance between the blind flange 120 and the desuperheater / pressure reducer pipe 200. The PTFE sealing ring 140 is easy to manufacture and inexpensive; multiple sealing rings 140 can be manufactured for pipes of different diameters. In this embodiment, testing of various pipe diameters can be achieved simply by replacing the sealing ring 140 corresponding to the weld bevel of each pipe specification.

[0023] In some embodiments, the axial direction of the tension plate 114 coincides with the radial direction of the ring flange, and the end of the tension plate 114 extending to the inner ring of the ring flange base plate 110 has an arc-shaped end face. In this embodiment, by setting the arc-shaped end face, the tension plate 114 is made to fit as tightly as possible against the outer wall of the desuperheater and pressure reducer pipe 200. The tighter the tension plate 114 fits against the outer wall of the desuperheater and pressure reducer pipe 200, the larger the contact area between the tension plate 114 and the pipe retainer 210 will be, and the connection stability between the two will be better. It is easy to imagine that when the diameter of the desuperheater and pressure reducer pipe 200 changes, the tension plate 114 will not always fit tightly against the outer wall of the desuperheater and pressure reducer pipe 200, but the fitting effect of setting the end of the tension plate 114 to an arc-shaped end face is better than setting the end of the tension plate 114 to a flat form.

[0024] In some embodiments, the adjusting screw 113 has a disc-shaped protrusion 113b at one end near the tension plate 114, and the tension plate 114 has a T-shaped groove that matches the protrusion at one end. In this embodiment, by providing the protrusion 113b on the adjusting screw 113 and the T-shaped groove on the tension plate 114, the protrusion 113b can be inserted into the T-shaped groove during installation, thereby achieving a rotational connection between the adjusting screw 113 and the tension plate 114.

[0025] In some embodiments, the annular flange base plate 110 is formed by snapping together a first base plate 111 and a second base plate 112. Both the first base plate 111 and the second base plate 112 are annular. Threaded holes 111a and strip holes 111b are both formed on the first base plate 111, with the strip hole 111b being open on the side closer to the second base plate 112. In this embodiment, during the installation of the annular flange base plate 110, multiple adjusting screws 113 are first passed sequentially through the threaded holes 111a on the first base plate 111. Then, a tension plate 114 is pressed into the strip hole 111b along the open surface (i.e., the side of the first base plate 111 closer to the second base plate 112), causing the T-shaped slot on the tension plate 114 to engage with the protrusion 113b of the adjusting screw 113. Finally, the second base plate 112 is snapped onto the first base plate 111, and the second base plate 112 and the first base plate 111 are fixed together with bolts.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although the foregoing embodiments have provided a detailed description of this application, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An adjustable depressurization and pressure reducing device testing fixture, characterized in that, The system includes a ring flange base plate and a blind flange arranged coaxially. Both the ring flange base plate and the blind flange have multiple horizontal holes along their axial direction. The multiple horizontal holes are spaced apart along the circumference of the blind flange and the ring flange base plate. A tension bolt passes through the horizontal hole. The annular flange base plate has sequentially connected threaded holes and strip holes extending from its outer cylindrical surface to its inner cylindrical surface. Multiple sets of threaded holes and strip holes are spaced apart along the axial direction of the annular flange base plate. An adjusting screw is threaded into each threaded hole, with one end extending to the outer ring of the annular flange base plate. A tension plate is slidably disposed within each strip hole, with one end rotatably connected to the adjusting screw and extending to the inner ring of the annular flange base plate.

2. The adjustable desuperheating and pressure reducing device test fixture according to claim 1, characterized in that, The adjusting screw has a rotating end at one end extending to the outer ring of the annular flange base plate.

3. The adjustable desuperheating and pressure reducing device test fixture according to claim 1, characterized in that, The number of adjusting screws is six, and the six adjusting screws are equally spaced around the ring flange base plate.

4. The adjustable desuperheating and pressure reducing device test fixture according to claim 1, characterized in that, A sealing ring is provided between the blind flange and the desuperheater / pressure reducer pipe. The sealing ring is made of polytetrafluoroethylene and has an annular groove that matches the desuperheater / pressure reducer pipe.

5. The adjustable desuperheating and pressure reducing device test fixture according to claim 1, characterized in that, The axial direction of the stretching plate coincides with the radial direction of the ring flange, and the end of the stretching plate extending to the inner ring of the ring flange base plate has an arc-shaped end face.

6. The adjustable desuperheating and pressure reducing device test fixture according to claim 1, characterized in that, The adjusting screw has a disc-shaped protrusion at one end near the stretching plate, and the stretching plate has a T-shaped groove at one end that matches the protrusion.

7. The adjustable desuperheating and pressure reducing device test fixture according to claim 6, characterized in that, The ring flange base plate is formed by snapping together a first base plate and a second base plate. Both the first base plate and the second base plate are annular. The threaded hole and the strip hole are both opened on the first base plate, and the side of the strip hole closer to the second base plate is open.

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