Pressure relief and pressure maintaining stable conveying device for filling pipeline

Abstract

The utility model discloses a filling pipeline pressure releasing and maintaining stable conveying device which comprises a pressure maintaining device, a pressure releasing device and a pneumatic valve, and particularly comprises a high-pressure plunger pump, the pneumatic valve, a pressure releasing valve and a one-way valve device. Wherein a high-pressure plunger pump is adopted in the pressure maintaining device, pressure oil serves as a pressure source, an air pressure type pressure relief device is adopted in the pressure relief device, according to the air expansion principle, when the pressure exceeds a preset value, air expands to push the device to be started, a one-way valve is arranged in the pressure relief device, and a pneumatic valve is additionally arranged; the method is used for controlling stable conveying of gas in the filling pipeline. According to the structure, through function linkage of the pressure relief device and the pressure maintaining device, stability of slurry conveying is guaranteed, the serious problems of pipeline abrasion, pipe blockage and pipe explosion in the conveying process are avoided, the phenomenon of uneven filling slurry and the safety accident problem are avoided, and the mine production efficiency and safety are improved.

Description

Technical Field

[0001] The utility model relates to the field of mine tailings filling, in particular to a filling pipeline pressure relief, pressure maintenance and stable conveying device. Background Art

[0002] Under the current theme of green and environmentally friendly production and processing, excessive pressure in mine filling pipelines is an important production problem that needs to be solved from multiple aspects. The deep well filling pipeline is a pipeline system buried deep underground, which is characterized by long transportation distance, high efficiency and good stability. However, due to the long-term high-pressure impact of the filling slurry on the pipeline, it is easy to cause pipeline wear and affect the service life. Secondly, due to the large vertical height difference of deep well transportation, the pressure of the slurry transportation pipeline is high, the requirements for system maintenance are also increased accordingly, and the maintenance cost also increases accordingly.

[0003] The main reasons for excessive pipeline pressure are as follows:

[0004] (1) When there is an interlocking effect between material particles (tailings and tailings, tailings and cement, cement and cement), the interlocking effect between the particles will make the internal structure of the filling body denser, so that during the transportation process, the interaction between the particles will increase the pressure inside the transportation pipeline.

[0005] (2) During the transportation process, the mutual friction between the filling slurry and the transportation pipeline causes the temperature inside the transportation pipeline to rise, thereby increasing the internal pressure.

[0006] (3) If the pipe diameter is too small, resulting in excessive fluid flow, it will cause a large pressure loss. At the same time, if the pipe is bent too much or the turning radius is too small, it will also cause the fluid to have a greater resistance in the pipe, thereby increasing the delivery pressure.

[0007] (4) If the pipe wall thickness is insufficient or the material selection is inappropriate, it will affect the pressure-bearing capacity of the pipe, thereby increasing the delivery pressure.

[0008] (5) The filling pipeline contains a large amount of gas, which will have an adverse effect on pipeline transportation and cause an increase in transportation pressure.

[0009] Therefore, it is necessary to design a filling pipeline pressure relief, pressure maintaining and stable conveying device with simple structure, easy installation and low cost, which can effectively solve the problems of severe pipeline wear, pipe blockage and pipe burst caused by excessive pressure during pipeline transportation. Utility Model Content

[0010] In order to solve the above problems, the utility model proposes a filling pipeline pressure relief, pressure maintaining and stable conveying device, which ensures the stability of slurry conveying through the functional linkage of the pressure maintaining and pressure relief devices, avoids pipeline wear, pipe blockage and pipe burst during the conveying process, and avoids the formation of inhomogeneous filling slurry and safety accidents.

[0011] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0012] Provided is a filling pipeline pressure relief, pressure maintaining and stable conveying device, comprising a high-pressure plunger pump, a pneumatic valve, a pressure relief valve, a one-way valve, and a filling pipeline. The pressure maintaining device adopts a high-pressure plunger pump to automatically control the pressure, and the pressure relief device adopts a pneumatic pressure relief device. It uses the principle of gas expansion. When the pressure exceeds a preset value, the gas expansion pushes the device to open. In addition, a pneumatic valve is provided to control the gas flow rate of the filling pipeline.

[0013] Furthermore, the filling pipeline pressure relief, pressure maintaining and stable conveying device is composed of a pressure maintaining device, a pressure relief device and a pneumatic valve, and is constructed in a sequence from top to bottom and from left to right.

[0014] Furthermore, the pressure maintaining device adopts a high-pressure plunger pump to provide pressure oil as a pressure source.

[0015] Furthermore, a pressure relief valve and a one-way valve are arranged in the pressure relief device, and the left side of the pressure relief device is connected to the pressure maintaining device through a pressure relief pipe.

[0016] Furthermore, the pneumatic valve is arranged above the filling pipeline in the horizontal direction to ensure stable transportation by controlling the pressure, flow rate and flow direction of the airflow.

[0017] Furthermore, the high-pressure plunger pump in the pressure-maintaining device is an electric pressure-maintaining device.

[0018] Furthermore, a one-way valve is installed in the pressure relief device to prevent liquid from flowing back.

[0019] Furthermore, the left end of the pneumatic valve is connected to the pressure maintaining device through a pressure relief pipe.

[0020] Furthermore, the high-pressure plunger pump of the electric pressure-maintaining device is electrically connected to a power supply assembly.

[0021] Furthermore, the left end of the one-way valve is connected to the pressure relief valve through a pressure relief pipe, and the right end corresponds to the outlet of the filling pipeline.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] 1. The filling pipeline pressure-maintaining device described in the utility model relies on a high-pressure plunger pump to provide pressure oil as a pressure source and sets a certain rated pressure. When the pressure is too high, the pressure relief device can be assisted to complete the pressure relief. When the pressure is insufficient after the pressure relief, the oil can be automatically replenished. The pressure regulation is automatically completed throughout the process to ensure that the slurry is transported under a steady-state pressure.

[0024] 2. The filling pipeline pressure relief device described in the utility model mainly adopts a pneumatic pressure relief device, which uses the principle of gas expansion. When the pressure exceeds the preset value, the gas expansion driving device will be opened to reasonably release the pressure through the pressure relief valve. At the same time, a one-way valve is set to prevent excessive leakage and pressure imbalance.

[0025] 3. The filling pipeline pressure relief, pressure maintaining and stable conveying device described in the utility model has a high degree of automation and realizes automatic control throughout the whole process, which not only simplifies the process but also improves the safety and stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a filling pipeline pressure relief, pressure maintaining and stable conveying device of the utility model.

[0027] The components in the accompanying drawings are marked as follows: 10, pressure maintaining device; 20, high-pressure plunger pump; 30, pressure relief device; 40, pressure relief valve; 50, one-way valve; 60, pneumatic valve; 70, filling pipeline. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme of the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0030] In addition, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0031] like Figure 1As shown, a filling pipeline pressure relief, pressure maintaining and stable conveying device 100 includes a pressure maintaining device 10 connected to the filling pipeline 70 in the vertical direction, wherein a high-pressure plunger pump 20 is used in the pressure maintaining device 10, and a pressure relief device 30 and a pneumatic valve 60 connected to the filling pipeline 70 in the horizontal direction, wherein the pressure relief device 30 includes a pressure relief valve 40 and a one-way valve 50.

[0032] The pressure-maintaining device is an automated pressure-maintaining device. The pressure-maintaining device 10 can ensure the stability of the pressure in the filling pipeline in real time. It relies on the high-pressure plunger pump 20 to provide pressure oil as a pressure source. When the actual pressure exceeds the rated pressure, it will work with the pressure relief device 30 to complete the pressure relief. When the actual pressure is insufficient, the high-pressure plunger pump 20 will automatically replenish oil to ensure stable pressure. The pressure relief device 30 can use the principle of gas expansion and the gas pressure existing inside the pipeline itself, and use the pressure relief valve 40 to control and release the pressure inside the pipeline.

[0033] The pressure relief device 30 is installed at the lower end of the filling pipe 70 in the horizontal direction. The pneumatic valve 60 is installed at the upper end of the filling pipe 70 in the horizontal direction.

[0034] In particular, a one-way valve 50 is provided on the connecting pipeline of the pressure relief device, which has one-way flow to prevent the pressure relief device from having pressure imbalance. The pneumatic valve 60 is provided at the upper end of the filling pipeline 70 in the horizontal direction to control the flow stability of the gas in the pipeline.

[0035] In this way, by arranging a pressure maintaining device 10 in the vertical direction of the filling pipe 70 and connecting the pressure maintaining device 10 with the pressure relief device 30 in the horizontal direction by signal, the bottom of the filling pipe 70 can be automatically pressure-relieved to avoid high-pressure pipe burst accidents, and a one-way valve 50 is arranged in the pressure relief device 30 to prevent the pipeline where the pressure relief device is located from backflowing due to the discharge of exhaust gas, thereby avoiding wear, blockage and burst problems in the pipeline where the pressure relief device is located.

[0036] Specifically, the pressure maintaining device 10 is electrically connected to the power supply assembly, which supplies power to the pressure maintaining device and sets the rated pressure. When the actual pressure exceeds the rated pressure, it will touch the pressure relief device through the connecting pipe to complete the pressure relief. When the actual pressure is insufficient, the high-pressure plunger pump 20 will also automatically provide pressure oil as a pressure source.

[0037] Specifically, the pressure relief valve 40 provided in the pressure relief device 30 is connected to the filling pipe 70 through the pressure relief pipe on the left side, and is connected to the one-way valve 50 on the right side, and the one-way valve 50 has one-way flow to prevent the pressure relief pipe from backflowing or bursting due to exhaust gas entering. In addition, by discharging tail gas and exhaust gas through the pressure relief device 30, the phenomenon of inhomogeneous filling slurry and safety accidents can be avoided, thereby improving the production efficiency and safety of the mine.

[0038] A pneumatic valve 60 is provided at the upper end of the filling pipe 70 in the horizontal direction, and the pneumatic valve 60 controls the opening and closing of the valve by the level of air pressure, thereby controlling the pressure and flow of the gas passing through the filling pipe 70 .

[0039] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model.

Claims

1. A filling pipeline pressure relief, pressure maintenance and stable conveying device, characterized in that: The invention comprises a pressure-maintaining device (10), a high-pressure plunger pump (20), a pressure-relieving device (30), a pressure-relieving valve (40), a one-way valve (50), a pneumatic valve (60), and a filling pipeline (70); the pressure-maintaining device (10) is an automated pressure-maintaining device, a high-pressure plunger pump (20) is arranged in the pressure-maintaining device (10), the pressure-relieving device (30) is a pneumatic pressure-relieving device, a pressure-relieving valve (40) and a one-way valve (50) are arranged in the pressure-relieving device (30), and a pneumatic valve (60) is arranged in the filling pipeline (70).

2. The filling pipeline pressure relief, pressure maintenance and stable conveying device according to claim 1 is characterized in that: A pressure maintaining device (10) is arranged in the vertical direction of the filling pipeline (70), and a pressure relief device (30) and a pneumatic valve (60) are arranged in the horizontal direction of the filling pipeline (70).

3. The filling pipeline pressure relief, pressure maintenance and stable conveying device according to claim 2 is characterized in that: The pressure maintaining device (10) uses a high-pressure plunger pump (20) to provide pressure oil as a pressure source.

4. The filling pipeline pressure relief, pressure maintenance and stable conveying device according to claim 2 is characterized in that: The pressure relief device (30) is installed at the lower end of the filling pipe (70) in the horizontal direction.

5. The filling pipeline pressure relief, pressure maintenance and stable conveying device according to claim 2 is characterized in that: The pressure relief valve (40) arranged in the pressure relief device (30) is connected to the pressure maintaining device (10) on its left side and to the one-way valve (50) on its right side.

6. The filling pipeline pressure relief, pressure maintenance and stable conveying device according to claim 2 is characterized in that: The one-way valve (50) arranged in the pressure relief device (30) is connected to the pressure relief valve (40) on the left side through a pressure relief pipe.

7. The filling pipeline pressure relief, pressure maintenance and stable conveying device according to claim 2 is characterized in that: The pneumatic valve (60) is installed at the upper end of the filling pipe (70) in the horizontal direction.

8. The filling pipeline pressure relief, pressure maintenance and stable conveying device according to claim 3 is characterized in that: The high-pressure plunger pump (20) in the pressure-maintaining device (10) is an electric pressure-maintaining device.

9. The filling pipeline pressure relief, pressure maintenance and stable conveying device according to claim 5, characterized in that: The left side of the pneumatic valve (60) is connected to the pressure maintaining device (10) via a pressure relief pipe.

10. The filling pipeline pressure relief, pressure maintenance and stable conveying device according to claim 6, characterized in that: The high-pressure plunger pump (20) is electrically connected to a power supply assembly.

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