Compensated retractable orifice plate device

Abstract

The utility model relates to orifice plate device technical field, and disclose a kind of compensation telescopic orifice plate device, comprising: pipeline shell, the middle part opening of pipeline shell is equipped with flange plate with outside, the opening both sides of pipeline shell are inserted with telescopic pipe, the inner wall of pipeline shell is equipped with high-pressure sealing washer, the surface of telescopic pipe and high-pressure sealing washer is in close contact, and orifice plate core is installed between the flange plate in middle part. By moving telescopic pipe to pipeline shell, orifice plate core will be exposed, and the orifice plate core to be replaced is taken out to replace, greatly save the expensive cost spent in replacing orifice plate, save material cost, simultaneously without removing the extraction pipeline or reprocessing extraction short connection of orifice plate two sides, without increasing joint and air leakage point, convenient, beautiful, and compensation telescopic orifice plate can be recycled, greatly save cost, improve the efficiency of use.

Description

Technical Field

[0001] This utility model relates to the technical field of perforated plate devices, specifically a compensating telescopic perforated plate device. Background Technology

[0002] In coal mine underground drilling and pre-drainage, the orifice plates installed on the gas pipeline are often matched according to the diameter of the gas pipeline (e.g., ￠325mm pipeline, matched with ￠325mm orifice plate, ￠426mm pipeline, matched with ￠426mm orifice plate, etc.).

[0003] However, the extraction flow rate, whether it falls within the orifice plate's measurement range, can only be determined during the extraction process after the drilling is completed. Since the gas pipeline, orifice plate, and automatic metering device must be installed beforehand, a mismatch often occurs between the extraction volume and the orifice plate's measured flow rate. In such cases, replacing the orifice plate or its core for accurate measurement is extremely inconvenient. After removal, the length of the newly installed orifice plate may differ from the original. If the new orifice plate is shorter than the original, it must be re-fabricated and shorted; otherwise, it cannot be installed to the original dimensions, increasing the risk of leaks. If the new orifice plate is longer than the original, multiple extraction pipelines must be removed and re-fabricated before installation. Orifice plate replacement not only increases the number of joints and leak points but also significantly affects the aesthetics of the gas pipeline. Furthermore, the long-term movement of the disassembled pipelines accelerates wear at the connections, reducing the pipeline's sealing performance. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a compensating telescopic orifice plate device to solve the problems mentioned in the background art, which involve the inconvenience of replacing orifice plates or orifice plate cores for accurate measurement, the incompatibility of newly installed orifice plates after removal, the requirement that the new orifice plate is shorter than the original, the need for re-fabrication of short connections, and the inability to install according to the original dimensions, thus increasing the number of leak points. Furthermore, the requirement that multiple extraction pipelines be removed and re-fabrication of short connections are necessary before installation, as orifice plate replacement not only increases the number of joints and leak points but also significantly affects the aesthetics of the gas pipeline. Additionally, the long-term movement of the disassembled pipelines accelerates wear at the pipeline connections, leading to reduced sealing performance.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a compensating telescopic perforated plate device, comprising:

[0008] The pipeline housing has flanges at its central opening and outer sides. Telescopic tubes are inserted on both sides of the opening of the pipeline housing. A high-pressure sealing gasket is installed on the inner wall of the pipeline housing. The telescopic tubes are in close contact with the surface of the high-pressure sealing gasket. A perforated plate core is installed between the flanges in the middle. Sealing rings are installed on the surface of each flange.

[0009] A fixing ring is provided on both sides of the upper surface of the pipe shell. A first sealing ring is installed on the surface of each fixing ring, and a second sealing ring is provided below each of the first sealing rings.

[0010] Connecting plates are disposed on the front and rear sides of the first sealing hoop and the second sealing hoop, and threaded rods are screwed between the two connecting plates on the same side.

[0011] Preferably, flange seats are installed on the surface of the flange located in the middle, and the flange seats are installed on the surface of the telescopic pipe, so that the flange can move with the telescopic pipe.

[0012] Preferably, a slider is installed in the middle of the surface of both the first sealing ring and the second sealing ring, and a groove is opened in the middle of the surface of both the fixed rings. The slider is embedded in the groove, so that the first sealing ring and the second sealing ring can move closely against the surface of the fixed ring.

[0013] Preferably, a sealing block is installed at the connection between the first sealing ring and the second sealing ring, and a locking nut is screwed onto the surface of the threaded rod. The sealing block can seal the connection between the first sealing ring and the second sealing ring, and the sealing block is in close contact with the surface of the fixing ring. The locking nut can tighten the threaded rod.

[0014] Preferably, the bottom left and right sides of the first sealing band are equipped with plug-in plates, and the upper surface of the second sealing band is provided with plug-in grooves on the left and right sides. The plug-in plates are inserted into the plug-in grooves so that there are no gaps at the connection between the first sealing band and the second sealing band.

[0015] Beneficial effects

[0016] Compared with the prior art, the present invention provides a compensating telescopic perforated plate device, which has the following beneficial effects:

[0017] 1. This compensating telescopic orifice plate device allows for rapid replacement of the orifice plate core by moving the telescopic tube into the pipeline casing. This significantly reduces the cost of replacing orifice plates and saves on material costs. Furthermore, it eliminates the need to remove the extraction pipelines on both sides of the orifice plate or to re-process the extraction short connectors, thus avoiding the need for additional joints and leak points. It is convenient, aesthetically pleasing, and the compensating telescopic orifice plate is reusable, further reducing costs and improving efficiency.

[0018] 2. This compensating telescopic orifice plate device can drive the first and second sealing rings to press against the surface of the telescopic pipe by rotating the threaded rod, thereby sealing the connection between the telescopic pipe and the pipe shell and sealing the wear joints of the pipe connection, thus improving the sealing performance of the pipe. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the pipe casing of this utility model;

[0021] Figure 3 This is a schematic diagram of the installation structure of the sealing clamp of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the first sealing hoop of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the second sealing hoop of this utility model.

[0024] In the diagram: 1. Pipe casing; 2. Expansion joint; 3. Flange; 4. High-pressure gasket; 5. Orifice plate core; 6. Sealing ring; 7. Retaining ring; 8. First sealing clamp; 9. Second sealing clamp; 10. Connecting plate; 11. Threaded rod; 12. Flange seat; 13. Sliding block; 14. Slide groove; 15. Sealing block; 16. Locking nut; 17. Insert plate; 18. Insert groove. Detailed Implementation

[0025] 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.

[0026] This utility model provides a technical solution: a compensating telescopic perforated plate device. Please refer to [link / reference]. Figure 1 This includes a pipe casing 1, with flanges 3 at both the central opening and the outer side of the pipe casing 1. Expansion tubes 2 are inserted into both sides of the opening of the pipe casing 1. Please refer to [link / reference]. Figure 2 The inner wall of the pipe casing 1 is equipped with a high-pressure sealing gasket 4, the expansion pipe 2 is in close contact with the surface of the high-pressure sealing gasket 4, and a perforated plate core 5 is installed between the middle flanges 3. The surface of the flanges 3 is equipped with sealing rings 6.

[0027] The orifice plate core 5 is a circular plate with a hole in the middle. After the airflow passes through the circular plate, a pressure difference is formed before and after the circular plate according to the airflow velocity. The flow rate through the pipeline can be calculated by the different diameters of the holes in the circular plate. The orifice plate core 5 can be replaced with different hole diameters according to the airflow size in order to more accurately measure the flow rate.

[0028] The telescopic tube 2 is a component similar to a stainless steel sleeve, which can be pulled out, similar to the style of a hydraulic jack. The telescopic tube 2 is hollow in the middle. When the telescopic tube 2 is moved into the outer casing 1 of the pipeline, the orifice plate core 5 will be exposed. The orifice plate core 5 that needs to be replaced can be taken out and replaced. The telescopic tube 2 drives the flange 3 in the middle to squeeze the orifice plate core 5, and the sealing ring 6 seals the connection between the flange 3 and the orifice plate core 5. The orifice plate core 5 can be replaced quickly, which greatly saves the expensive cost of replacing the orifice plate and saves material costs. At the same time, there is no need to remove the extraction pipelines on both sides of the orifice plate or reprocess the extraction short joints. There is no need to add joints and leakage points. It is convenient and aesthetically pleasing. Moreover, the compensating telescopic orifice plate can be recycled, which greatly saves costs and improves the efficiency of use.

[0029] The compensating telescopic orifice plate consists of two main parts: the orifice plate body and the telescopic part. After the gas pipeline and orifice plate are installed, if during the extraction process, it is found that the orifice plate does not match the extraction flow rate, such as: the extraction flow rate is too large, the orifice plate core 5 is too small, resulting in high resistance and affecting the extraction volume; or the extraction flow rate is too small, the orifice plate core 5 is too large, resulting in no reading on the U-shaped differential pressure gauge, etc., the compensating telescopic orifice plate can be retracted and removed, and a smaller orifice plate core 5 can be replaced, such as replacing 3 / 4 of the orifice plate core 5 with 1 / 4 of the orifice plate core 5. After replacement, according to the principle of orifice plate telescopicity, the orifice plate can be easily installed according to the original size. Moreover, the telescopic part of the compensating telescopic orifice plate can also rotate, which is equivalent to a movable disc on the gas pipeline, making the installation more convenient and the sealing better.

[0030] Please see Figure 1 The retaining rings 7 are located on both sides of the upper surface of the pipe housing 1. Please refer to [link / reference]. Figure 3 The surface of the fixing ring 7 is equipped with a first sealing ring 8, and a second sealing ring 9 is provided below the first sealing ring 8.

[0031] Connecting plates 10 are located on the front and rear sides of the first sealing ring 8 and the second sealing ring 9, and threaded rods 11 are screwed between the two connecting plates 10 on the same side.

[0032] The rotating threaded rod 11 can drive the first sealing clamp 8 and the second sealing clamp 9 to press against the surface of the telescopic pipe 2, thereby sealing the connection between the telescopic pipe 2 and the pipe shell 1, sealing the wear joints of the pipe connection, and improving the sealing performance of the pipe.

[0033] Please see Figure 1 Flange seats 12 are installed on the surface of the central flange 3. The flange seats 12 are installed on the surface of the telescopic pipe 2, so that the flange 3 can move with the telescopic pipe 2.

[0034] Please see Figure 4 and Figure 5 Both the first sealing clamp 8 and the second sealing clamp 9 have sliders 13 installed at the center of their surfaces. Please refer to [link / reference]. Figure 3 The fixed ring 7 has a groove 14 in the middle of its surface. The slider 13 is embedded in the groove 14, so that the first sealing ring 8 and the second sealing ring 9 can move close to the surface of the fixed ring 7.

[0035] Please see Figure 4 and Figure 5 A sealing block 15 is installed at the connection between the first sealing ring 8 and the second sealing ring 9. A locking nut 16 is screwed onto the surface of the threaded rod 11. The sealing block 15 can seal the connection between the first sealing ring 8 and the second sealing ring 9. At the same time, the sealing block 15 is in close contact with the surface of the fixing ring 7. The locking nut 16 can tighten the threaded rod 11.

[0036] Please see Figure 4 The bottom left and right sides of the first sealing clamp 8 are equipped with plug-in plates 17. Please refer to [link / reference]. Figure 5 The upper surface of the second sealing band 9 is provided with insertion grooves 18 on both the left and right sides. The insertion plate 17 is inserted into the insertion groove 18 so that there will be no gap at the connection between the first sealing band 8 and the second sealing band 9.

[0037] In operation, this solution involves moving the telescopic pipe 2 into the pipe housing 1, exposing the orifice plate core 5. The orifice plate core 5 that needs replacement can then be removed and replaced. The telescopic pipe 2 drives the flange 3 in the middle to compress the orifice plate core 5, and the sealing ring 6 seals the connection between the flange 3 and the orifice plate core 5. This allows for quick replacement of the orifice plate core 5, significantly reducing the cost of replacing orifice plates and saving material costs. Furthermore, it eliminates the need to remove the extraction pipes on both sides of the orifice plate or reprocess the extraction short connectors, avoiding the need for additional joints and leak points. It is convenient, aesthetically pleasing, and the compensating telescopic orifice plate is reusable, greatly saving costs and improving efficiency.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] 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 compensating telescopic perforated plate device, characterized in that, include: The pipe housing (1) has a flange (3) at the middle opening and on the outside. Telescopic pipes (2) are inserted on both sides of the opening of the pipe housing (1). A high-pressure sealing gasket (4) is installed on the inner wall of the pipe housing (1). The surface of the telescopic pipe (2) is in close contact with the surface of the high-pressure sealing gasket (4). A perforated plate core (5) is installed between the flanges (3) in the middle. A sealing ring (6) is installed on the surface of the flanges (3). Fixing rings (7) are provided on both sides of the upper surface of the pipe housing (1). The surface of each fixing ring (7) is equipped with a first sealing ring (8), and a second sealing ring (9) is provided below each of the first sealing rings (8). Connecting plates (10) are provided on the front and rear sides of the first sealing hoop (8) and the second sealing hoop (9), and threaded rods (11) are screwed between the two connecting plates (10) on the same side.

2. The compensating telescopic perforated plate device according to claim 1, characterized in that: Flange seats (12) are installed on the surface of the flange (3) located in the middle, and the flange seats (12) are installed on the surface of the telescopic pipe (2).

3. The compensating telescopic perforated plate device according to claim 1, characterized in that: The first sealing ring (8) and the second sealing ring (9) are both equipped with sliders (13) in the middle of their surfaces, and the fixed ring (7) is provided with grooves (14) in the middle of its surface.

4. The compensating telescopic perforated plate device according to claim 1, characterized in that: A sealing block (15) is installed at the connection between the first sealing ring (8) and the second sealing ring (9), and a lock nut (16) is screwed onto the surface of the threaded rod (11).

5. The compensating telescopic perforated plate device according to claim 1, characterized in that: The bottom left and right sides of the first sealing band (8) are equipped with plug plates (17), and the top surface of the second sealing band (9) is provided with plug grooves (18) on both the left and right sides.

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