Gas pipeline negative pressure and flow measuring device

Abstract

The utility model discloses a kind of gas pipeline negative pressure, flow measuring device, installation box is concave rectangular shell, concave end is equipped with first pipeline, second pipeline, first pipeline, second pipeline is arranged in U shape, and the vertical end of both sides is evenly distributed with connecting device, the front and rear sides of fixed plate are provided with the vertical set up extension, two extension parts between corresponding end face are equipped with connecting shaft, first flap, second flap coaxially set on connecting shaft, the middle part of first flap is concave, form the mounting space for accommodating second flap, the side of first flap, second flap away from corresponding end face is respectively provided with the horizontal set up lower plate, spring is equipped between lower plate and fixed plate, one end of spring is connected with lower plate, the other end is connected with fixed plate, measuring pipeline is connected with system main body through connecting device, when pipeline is damaged, allow operating personnel to quickly remove damaged unit from connecting device, and replace new pipeline component.

Description

Technical Field

[0001] This utility model relates to the field of measuring equipment technology, specifically a gas pipeline negative pressure and flow measurement device. Background Technology

[0002] In coal mines or other units where gas passes through pipelines, it is often necessary to monitor the negative pressure and flow rate of the gas within the pipelines. This is especially true in coal mines, where it is necessary to regularly measure the negative pressure and flow rate of gas in pipelines or boreholes to monitor the gas extraction efficiency and any abnormalities. Currently, the double-door structure of the gas pipeline data measurement boxes used in mines is relatively complex and bulky, making them inconvenient to carry and easily damaged. When damaged, it is difficult to inspect and replace the damaged parts, thus requiring the entire box to be replaced, resulting in waste. Utility Model Content

[0003] The purpose of this utility model is to provide a gas pipeline negative pressure and flow measurement device to solve the problems of the complex double-door structure, large size, inconvenience of carrying and easy damage of the gas pipeline data measurement box used in mines. When damaged, it is not convenient to inspect and replace the damaged parts, and the whole thing needs to be replaced, resulting in waste.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a gas pipeline negative pressure and flow measurement device, comprising a mounting box, a first pipeline, a second pipeline, and a connecting device. The mounting box is a concave rectangular shell, with a first pipe and a second pipe inside the concave end. The first pipe and the second pipe are arranged in a U-shape, and connecting devices are evenly distributed on both vertical ends. The connecting device includes a fixed plate, a first flap, a second flap, a lower pressure plate, and a spring. The fixed plate has vertically extended portions on its front and rear sides, and a connecting shaft is provided between the corresponding end faces of the two extended portions. The first flap and the second flap are coaxially mounted on the connecting shaft. The middle part of the first flap is concave to form an installation space for accommodating the second flap. A horizontally mounted lower pressure plate is provided on the side of the first flap and the second flap away from their corresponding end faces. A spring is provided between the lower pressure plate and the fixed plate, with one end of the spring connected to the lower pressure plate and the other end connected to the fixed plate.

[0005] Preferably, the contact ends of the first flap and the second flap with the first pipeline and the second pipeline are arranged in an arc shape.

[0006] Preferably, the device also includes a cover plate connected to the mounting box via a hinge, and a locking device is connected to the other end of the cover plate.

[0007] Preferably, the locking device includes a mounting base, a pull rod, a fixing ring, and a spring. The mounting base is connected to the front and rear ends of the cover plate on the side away from the hinge point. The mounting base has a through hole, and the pull rod is installed in the through hole. The pull rod passes through the mounting base, and its top end is inserted into the insertion ring connected to the front and rear ends of the mounting box on the side away from the hinge point. A fixing ring is connected to the outer circumference of the pull rod. A spring is provided between the fixing ring and the top end of the mounting base and is sleeved on the pull rod. The two ends of the spring abut against the fixing ring and the mounting base, respectively.

[0008] Preferably, a level is provided at the top of the concave end of the mounting box.

[0009] Preferably, a scale is provided on the left and right sides inside the installation box.

[0010] Preferably, the first and second pipes are made of transparent glass.

[0011] Compared with the prior art, the beneficial effects of this utility model are: The measuring pipeline is connected to the main system via a connecting device. In the event of pipeline damage, operators can quickly remove the damaged unit from the connecting device and replace it with a new pipeline component, avoiding the need for complete replacement due to partial damage and greatly saving maintenance time and resources. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the connecting device structure of this utility model.

[0014] In the diagram: 1. Mounting box; 2. First pipeline; 3. Second pipeline; 40. Connecting device; 401. Fixing plate; 402. First flap; 403. Second flap; 404. Lower pressure plate; 405. Spring; 5. Ruler; 6. Level; 7. Cover plate; 8. Insert ring; 9. Mounting base; 10. Pull rod; 11. Fixing ring; 12. Spring. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0016] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] 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.

[0019] Example 1: Please refer to Figure 1-2This utility model provides an embodiment of a gas pipeline negative pressure and flow measurement device, including a mounting box 1, a first pipeline 2, a second pipeline 3, and a connecting device 4. The mounting box 1 is a concave rectangular shell, serving as the main structure and outer shell of the device, used to support and fix all internal components, and providing protection for the internal parts. Both the mounting box 1 and the cover plate 7 are provided with carrying handles. The integrated design makes the entire device portable and convenient for downhole operations. The concave end is provided with the first pipeline 2 and the second pipeline 3, which are arranged in a U-shape. As the core component for measurement, they are the channels through which the gas flows. The operator measures the negative pressure and flow by observing the height difference of the liquid column in the pipeline. Pipeline 2 contains distilled water, and pipeline 3 contains mercury. Rubber tubing is connected to the two ports of pipeline 2 and pipeline 3 respectively. In use, the tubing is connected to the orifice plate of the pipe to be measured. A level 6 is installed at the concave end of mounting box 1 to indicate whether the entire device is level. The readings of liquid column pressure gauges or flow meters are highly sensitive to levelness, and level 6 is crucial for ensuring data accuracy. Scales 5 are installed on the left and right sides inside mounting box 1 to directly read the height difference of the liquid column in the U-shaped pipe, converting the height difference directly into a physical reading for quick and easy data acquisition and reduced human error. Pipelines 2 and 3 are made of transparent glass for easy observation of the liquid level. Negative pressure measurement: Insert the rubber tube on the second pipe 3 into the measuring hole of the orifice flow meter, with the other end of the tube connected to the air. Read the value on the scale. If the mercury in the U-tube is on the same side of the 0 position, subtract the two values. If the mercury column is on both sides of the 0 position, add the two values. After determining the value, calculate the corresponding negative pressure in the gas pipeline using the formula. Flow measurement: If the flow rate to be measured is large, connect the rubber hose on the second pipeline 3 to the measuring holes at both ends of the orifice plate flow meter of the pipeline to be measured, and read the value on the scale. If the mercury in the U-tube is on the same side of the 0 position, subtract the two values. If the mercury column is on both sides of the 0 position, add the two values. After determining the value, calculate the corresponding flow rate in the gas pipeline using the formula.

[0020] If the flow rate is small, connect the rubber hose on the first pipeline 2 to the measuring holes at both ends of the orifice plate flowmeter of the pipeline being measured, and read the value on the scale. If the mercury in the U-tube is on the same side of the 0 position, subtract the two values. If the mercury column is on both sides of the 0 position, add the two values. After determining the value, calculate the corresponding flow rate in the gas pipeline using the formula.

[0021] Furthermore, connecting devices 4 are evenly distributed on both vertical ends. The connecting device 4 includes a fixed plate 401, a first flap 402, a second flap 403, a lower pressure plate 404, and a spring 405. The fixed plate 401 has vertically extending portions on its front and rear sides. A connecting shaft is provided between the corresponding end faces of the two extending portions, serving as the base of the connecting device 4. It can be bolted into the mounting box 1 and supports other moving parts, providing a stable and reliable mounting foundation. The first flap 402 and the second flap 403 are coaxially mounted on the connecting shaft. The first flap 402 and the second flap 403 are connected to the first pipe 2 and the second pipe... The contact end of pipe 3 is equipped with a silicone pad, forming a clamping mechanism. Under the action of spring 405, the two flaps will always clamp towards their corresponding end faces, clamping the walls of the first pipe 2 and the second pipe 3 to achieve fixation. During installation, the lower pressure plate 404 can be manually pressed to move the first flap 402 and the second flap 403 away from their corresponding end faces, while compressing the spring 405. When the first pipe 2 and the second pipe 3 are placed between the first flap 402 and the second flap 403, the lower pressure plate 404 can be manually released, and the spring 405 will compress the pipe. The force is applied to reset and clamp the pipeline. The middle part of the first flap 402 is concave, forming an installation space to accommodate the second flap 403. A horizontally positioned lower pressure plate 404 is respectively provided on the side of the first flap 402 and the second flap 403 away from their corresponding end faces. The linear motion of the lower pressure plate 404 is converted into a rotating clamping action of the flap. When disassembly is required, pressing the two lower pressure plates 404 will release the clamping action, which is very convenient. A spring 405 is provided between the lower pressure plate 404 and the fixed plate 401. One end of the spring 405 is connected to the lower pressure plate 404. The connection provides a continuous elastic force to clamp the first flap 402 and the second flap 403. The other end is connected to the fixing plate 401. The contact ends of the first flap 402 and the second flap 403 with the first pipe 2 and the second pipe 3 are arc-shaped, which better fits the outer wall of the pipe and increases the contact area. This ensures stable clamping and avoids damage to the pipe. The cover plate 7 is also connected to the mounting box 1 by a hinge to protect the internal measuring pipe and the connecting device 4 from collisions, dust and moisture intrusion during transportation and when idle. The other end of the cover plate 7 is connected to a locking device.

[0022] Example 2: Please refer to Figure 1 Based on Example 1, it also has the following structure: The other end of the cover plate 7 is connected to a locking device. Pulling the lever 10 unlocks the cover plate, and releasing it automatically locks it under the action of the spring 12. The operation is extremely simple. The locking device includes a mounting base 9, a lever 10, a fixing ring 11, and a spring 12. The mounting base 9 is connected to the front and rear ends of the cover plate 7 on the side away from the hinge point. It serves as the base of the locking device, supporting and guiding the lever 10 to move linearly, ensuring that the lever 10 can only move along the axis and preventing it from tilting and jamming. The mounting base 9 has a through hole, and the lever 10 is placed in the through hole. The lever 10 passes through the mounting base 9, and its top end is inserted into the insert ring 8 connected to the front and rear ends of the mounting box 1 on the side away from the hinge point. The locking and unlocking states of the device are achieved by inserting or disengaging the insert ring 8. The operator controls the lever. When a pulling force is applied, it is directly converted into an unlocking action. A fixing ring 11 is connected to the outer circumference of the pull rod 10, which serves as the force point of one end of the spring 12. The elastic force of the spring 12 is transmitted and converted into a continuous pull force on the pull rod 10, so that the top of the pull rod 10 can be stably inserted into the insertion ring 8, thereby connecting the cover plate 7 and the mounting box 1 together. At the same time, the operator can lift the handle for easy operation in the well. When not in use, it can be placed horizontally to keep the cover plate 7 connected to the mounting box 1. A spring 12 is provided between the top of the fixing ring 11 and the mounting seat 9, which drives the pull rod 10 and the fixing ring 11 to move in the locking direction to achieve automatic locking. The spring 12 is sleeved on the pull rod 10, and the two ends of the spring 12 abut against the fixing ring 11 and the mounting seat 9 respectively.

[0023] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A gas pipeline negative pressure and flow measurement device, characterized in that: It includes a mounting box (1), a first pipeline (2), a second pipeline (3), and a connecting device (4). The mounting box (1) is a concave rectangular shell. A first pipe (2) and a second pipe (3) are provided in the concave end. The first pipe (2) and the second pipe (3) are arranged in a U-shape, and connecting devices (4) are evenly distributed on the vertical ends on both sides. The connecting device (4) includes a fixed plate (401), a first flap (402), a second flap (403), a lower pressure plate (404), and a spring (405). The fixed plate (401) has vertically extended portions on its front and rear sides. A connecting shaft is provided between the corresponding end faces of the two extended portions. The first flap (402) and the second flap (403) are coaxially arranged on the connecting shaft. The middle part of the first flap (402) is concave to form an installation space for accommodating the second flap (403). A horizontally arranged lower pressure plate (404) is provided on the side of the first flap (402) and the second flap (403) away from the corresponding end face. A spring (405) is provided between the lower pressure plate (404) and the fixed plate (401). One end of the spring (405) is connected to the lower pressure plate (404), and the other end is connected to the fixed plate (401).

2. The gas pipeline negative pressure and flow measurement device according to claim 1, characterized in that: The contact ends of the first flap (402), the second flap (403) with the first pipeline (2) and the second pipeline (3) are arranged in an arc shape.

3. The gas pipeline negative pressure and flow measurement device according to claim 1, characterized in that: It also includes a cover plate (7) connected to the mounting box (1) by a hinge, and a locking device is connected to the other end of the cover plate (7).

4. The gas pipeline negative pressure and flow measurement device according to claim 3, characterized in that: The locking device includes a mounting base (9), a pull rod (10), a fixing ring (11), and a spring (12). The mounting base (9) is connected to the front and rear ends of the cover plate (7) away from the hinge point. The mounting base (9) has a through hole, and the pull rod (10) is provided in the through hole. The pull rod (10) passes through the mounting base (9), and its top end is inserted into the insert ring (8) connected to the front and rear ends of the mounting box (1) away from the hinge point. The fixing ring (11) is connected to the outer circumference of the pull rod (10). A spring (12) is provided between the fixing ring (11) and the top end of the mounting base (9), and is sleeved on the pull rod (10). The two ends of the spring (12) abut against the fixing ring (11) and the mounting base (9) respectively.

5. The gas pipeline negative pressure and flow measurement device according to claim 1, characterized in that: A level (6) is provided at the top of the concave end of the mounting box (1).

6. The gas pipeline negative pressure and flow measurement device according to claim 1, characterized in that: The mounting box (1) has a scale (5) on the left and right sides.

7. The gas pipeline negative pressure and flow measurement device according to claim 1, characterized in that: The first pipe (2) and the second pipe (3) are made of transparent glass.

Images