Pipeline pressure relief device for mine filling

Abstract

The utility model provides a pipeline pressure relief device for mine filling, which comprises a short section pipe used for being connected with a filling pipeline, a pressure relief opening is arranged in the middle of the short section pipe, a plug matched with the pressure relief opening is arranged at the pressure relief opening, flange plates are respectively arranged at the end parts of the pressure relief opening and the plug, a plurality of fastening bolts are arranged on the flange plates, and the fastening bolts are connected with the short section pipe. A rubber pad is arranged on the inner side of the flange plate, and a hemispherical protruding part is arranged on the side, close to the pressure relief opening, of the plug. The pressure relief opening and the plug are further fixed through a hoop, and a sealing ring is arranged on the inner ring of the hoop. According to the utility model, the hemispherical plug design is adopted, so that the pressure in the filling pipeline can be quickly and effectively relieved; and the two-layer sealing design of the flange plate and the hoop is adopted, so that the operation safety is ensured, and the safe and stable operation of the filling system is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of mine filling and relates to a pipeline pressure relief device for mine filling. Background Art

[0002] When filling underground goafs, slurry can lose fluidity due to factors such as material, equipment, and instrumentation, leading to pipe blockage. If the pressure within the pipe is not promptly released and cleared, the slurry can solidify inside the filling borehole and the pipe, rendering the borehole useless. Therefore, the design and invention of a pressure relief device for mine filling pipes is crucial to solving this problem. Utility Model Content

[0003] The purpose of the utility model is to provide a pipeline pressure relief device for mine filling in order to solve the problems existing in the prior art.

[0004] To this end, the present invention adopts the following technical solutions:

[0005] A pipeline pressure relief device for mine filling includes a short pipe section for connecting a filling pipe, a pressure relief port being provided in the middle of the short pipe section, a plug being matched therewith being provided at the pressure relief port, flanges being provided at the ends of the pressure relief port and the plug respectively, a plurality of fastening bolts being provided on the flanges, a rubber pad being provided on the inner side of the flanges, and a hemispherical protrusion being provided on the side of the plug close to the pressure relief port; the pressure relief port and the plug are also fixed by a clamp, and a sealing ring is provided on the inner ring of the clamp.

[0006] Furthermore, a lifting lug is provided on a side of the plug away from the pressure relief port.

[0007] Furthermore, both ends of the short tube are provided with annular quick connectors.

[0008] Furthermore, a pressure sensor is provided inside the short pipe joint, and a pipeline pressure monitoring system is provided outside the short pipe joint, and the pressure sensor is connected to the pipeline pressure monitoring system signal.

[0009] The beneficial effects of the utility model are: the device can be used to quickly and effectively release the pressure in the filling pipeline; the service life of the filling borehole and the pipeline is increased, the operation safety is guaranteed, and the filling system can operate safely and stably; the structure is simple, safe and reliable, and easy to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural diagram of the utility model;

[0011] Figure 2 for Figure 1 A partial enlarged view of part A in the middle.

[0012] In the figure, 1- short tube, 2- pressure relief port, 3- plug, 4- clamp, 5- flange, 6- lifting ear, 7- fastening bolt, 8- sealing ring, 9- rubber gasket, 10- pressure sensor, 11- quick connector. DETAILED DESCRIPTION

[0013] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings.

[0014] like Figure 1-2 As shown, a pressure relief device for a mine filling pipeline includes a short pipe 1 for connecting a filling pipeline. A pressure relief port 2 is provided in the middle of the short pipe 1, and a plug 3 is provided at the pressure relief port 2 to match it. Flanges 5 are provided at the ends of the pressure relief port 2 and the plug 3, respectively. A number of fastening bolts 7 are provided on the flange 5, and a rubber pad 9 is provided on the inner side of the flange 5 to prevent slurry from leaking from the gap. A hemispherical protrusion is provided on the side of the plug 3 close to the pressure relief port 2. The hemispherical protrusion can prevent the slurry from accumulating and solidifying at the pressure relief port 2, ensuring that the slurry flows smoothly in the pipeline. A lifting lug 6 is provided on the side of the plug 3 away from the pressure relief port 2 to facilitate gripping and pulling out when removing the plug 3. The plug 3 is made entirely of carbon steel to ensure the service life of the plug 3. The pressure relief port 2 and the plug 3 are fixed by a clamp 4, and the inner ring of the clamp 4 is provided with a sealing ring 8.

[0015] An annular quick connector 11 is provided at both ends of the short tube 1. A pressure sensor 10 is provided inside the short tube 1 for monitoring the pressure inside the pipeline. A pipeline pressure monitoring system is provided outside the short tube 1. The pressure sensor 10 is connected to the pipeline pressure monitoring system signal.

[0016] The operating principle of this utility model is as follows:

[0017] During use, at locations prone to blockage or critical nodes, connect the two ends of the short tube 1 to the filling straight pipe. Specifically, connect the quick connectors 11 at both ends of the short tube 1 to the quick connectors 11 at the ends of the filling straight pipe and secure them with clamps 4. When installing the plug 3, the operator holds the lifting lug 6 and installs the plug 3 into the pressure relief port 2. Place a rubber gasket 9 between the flange 5 of the pressure relief port 2 and the flange 5 of the plug 3. After confirming that the flanges 5 on the pressure relief port 2 and the plug 3 are aligned, tighten the fastening bolts 7. Then, use the clamp 4 to secure the pressure relief port 2 and the plug 3. The inner ring of the clamp 4 is equipped with a sealing ring 8 to prevent slurry from overflowing from the gap if the flange 5 fails to secure. At this time, the flange 5 forms the first layer of seal, and the clamp 4 forms the second layer of seal.

[0018] When the pressure sensor 10 detects a rapid increase in the pressure in the pipeline, exceeding the threshold, the plug 3 is removed for pressure relief. At this point, simply open the clamp 4, remove the fastening bolt 7, grasp the lifting lug 6, and remove the plug 3 from the pressure relief port 2 for rapid pressure relief. Once the pressure in the pipeline returns to normal, the plug 3 is reinstalled and the clamp 4 is secured.

Claims

1. A pipeline pressure relief device for mine filling, characterized in that: The invention comprises a short pipe joint for connecting a filling pipe, wherein a pressure relief port (2) is provided in the middle of the short pipe joint (1), a plug (3) matching the pressure relief port (2) is provided at the pressure relief port (2), flanges (5) are provided at the ends of the pressure relief port (2) and the plug (3), a plurality of fastening bolts (7) are provided on the flange (5), a rubber pad (9) is provided on the inner side of the flange (5), and a hemispherical protrusion is provided on the side of the plug (3) close to the pressure relief port (2); the pressure relief port (2) and the plug (3) are fixed by a clamp (4), and a sealing ring (8) is provided on the inner ring of the clamp (4).

2. A mine filling pipeline pressure relief device according to claim 1, characterized in that: A lifting lug (6) is provided on a side of the plug (3) away from the pressure relief port (2).

3. A mine filling pipeline pressure relief device according to claim 1, characterized in that: Both ends of the short tube section (1) are respectively provided with an annular quick connector (11).

4. A mine filling pipeline pressure relief device according to claim 1, characterized in that: A pressure sensor (10) is provided inside the short tube joint (1), and a pipeline pressure monitoring system is provided outside the short tube joint (1), and the pressure sensor (10) is signal-connected to the pipeline pressure monitoring system.

5. A mine filling pipeline pressure relief device according to claim 1, characterized in that: The plug (3) is made entirely of carbon steel.

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