Filling pipeline damping device

Abstract

The utility model provides a vibration reduction device for a filling pipeline. The vibration reduction device comprises the filling pipeline and a multi-section type vibration reduction device arranged between a feeding port and a discharging port of the filling pipeline. The multi-section vibration damping device comprises a plurality of vibration dampers communicated with the filling pipeline; an air bag is arranged at the end, away from the filling pipeline, of the interior of the shock absorber, and a first cavity is formed by a cavity between the air bag and the filling pipeline. By means of the design of the multi-section shock absorber, pipeline vibration is effectively reduced, system stability and reliability are improved, maintenance and monitoring of air pressure in the air bag are facilitated by arranging the access hole, the air bag and the pressure gauge, the inflation valve is arranged to control inflation and pressure relief in the air bag so as to adapt to different working conditions, pipeline vibration is reduced, and the service life of the system is prolonged. And the stability of the filling pipeline in the pumping process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mining, in particular to a filling pipeline vibration reduction device. Background Art

[0002] Backfill mining is one of the main mining methods in the mining industry. According to the different filling materials, it is divided into dry backfill mining, water-sand backfill mining and cemented backfill mining. Both water-sand backfill and cemented backfill require the backfill medium to be transported through pipelines. The backfill pipeline is usually connected with seamless steel pipes, flanges, valves, etc. The backfill pipeline is a rigid connection, which enhances its conductivity to vibration. In the process of using a backfill pump to pump the backfill medium, due to the reversing characteristics of the reciprocating pump, the pump will frequently reverse, which will cause discontinuity in the transportation of high-concentration media in the pipeline, and the movement speed of the backfill medium in the pipeline will suddenly change, causing the backfill medium in the pipeline to produce hydraulic shock. The shock will cause the overall vibration of the backfill pipeline, which will increase the displacement of the pipeline in a certain direction, thereby reducing the stability of the backfill pipeline system. The problem is concentrated at the connection between the pipelines, and in severe cases, it will cause leakage at the connection between the pipelines. At present, widely used vibration reduction devices can only suppress the vibration of the pipeline system by fixing the pipeline, and have little effect on alleviating the vibration of the filling pipeline caused by pumping. Therefore, a device for reducing the vibration of the filling pipeline is needed to meet the demand.

[0003] In view of this, it is necessary to design an improved filling pipe vibration reduction device to solve the above problems. Utility Model Content

[0004] To achieve the above-mentioned purpose, the utility model provides a filling pipeline vibration reduction device. By arranging a multi-stage vibration reduction device on the pipeline, the device utilizes the compressibility of gas to convert part of the kinetic energy of the fluid medium in the pipeline into pressure energy, and when the flow in the pipeline is about to change suddenly, the pressure energy is released and converted into the kinetic energy of the fluid medium, thereby making the flow and pressure in the pipeline tend to balance.

[0005] The purpose of the utility model is to provide a filling pipe vibration reduction device comprising a filling pipe and a multi-stage vibration reduction device arranged between the feed port and the discharge port of the filling pipe; the multi-stage vibration reduction device comprises a plurality of vibration reducers connected to the filling pipe; an air bag is arranged at one end of the vibration reducer away from the filling pipe, and the cavity between the air bag and the filling pipe forms a first chamber.

[0006] Preferably, the filling pipeline is composed of a plurality of branch pipelines connected in series.

[0007] Preferably, the multi-stage vibration reduction device includes a plurality of vibration reducers respectively connected to the branch pipes.

[0008] Preferably, the number of the branch pipes is three, and the shock absorber includes a first shock absorber, a second shock absorber and a third shock absorber respectively connected to the three branch pipes.

[0009] Preferably, adjacent branch pipes are connected via flanges, and the structural structures of the first shock absorber, the second shock absorber and the third shock absorber are all the same.

[0010] Preferably, an inspection port is provided inside the first shock absorber at one end close to the airbag.

[0011] Preferably, an inspection cover is provided on the outer side of the inspection opening.

[0012] Preferably, the inspection cover is connected to the inspection opening by bolts.

[0013] Preferably, the inspection port is connected to a pressure gauge via an air charging pipe.

[0014] Preferably, an inflation valve is provided on the inflation pipe.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model provides a filling pipeline vibration reduction device which adopts a multi-stage vibration absorber and airbag combination design, which can effectively absorb high-frequency pulsation in the filling pipeline. The airbag in the vibration absorber can absorb and release the kinetic energy of the fluid medium by compression and expansion, thereby reducing the vibration amplitude of the pipeline. By reducing pipeline vibration, the stability of the pipeline system can be improved, the damage to the pipeline and related equipment caused by vibration can be reduced, and its service life can be extended.

[0017] 2. The utility model provides a filling pipeline vibration reduction device that utilizes the compressibility of gas to convert the kinetic energy of the fluid medium in the pipeline into pressure energy, and releases the pressure energy when the flow rate changes suddenly, so that the flow rate and pressure in the pipeline tend to be balanced. By balancing the changes in flow rate and pressure, the pulsation of the medium in the filling pipeline can be reduced and the stability of the system can be improved. Stable system operation helps to reduce unstable factors in the production process and improve product quality and production efficiency.

[0018] 3. The utility model provides a filling pipeline vibration reduction device that can extend the life of the device and reduce maintenance costs. The airbag in the vibration reducer has a replaceable structure. When the airbag is damaged, it can be replaced in time, thereby extending the service life of the device. In addition, reducing pipeline vibration can reduce the wear and fatigue of the pipeline and related equipment and reduce maintenance costs. By using this device, the failure rate and maintenance frequency of the equipment can be reduced, and the reliability and life cycle economy of the equipment can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall external structure of the filling pipe vibration reduction device.

[0020] Figure 2 Schematic diagram of the internal structure of the shock absorber.

[0021] Reference numerals

[0022] 1-feeding port; 2-first shock absorber; 21-first chamber; 22-air bag; 23-second chamber; 3-second shock absorber; 4-third shock absorber; 5-pressure gauge; 6-inflating valve; 7-inspection port; 8-discharging port. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] 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.

[0026] Please refer to Figure 1-Figure 2 The utility model provides a filling pipeline vibration reduction device, which includes a filling pipeline and a multi-stage vibration reduction device arranged between a feed port 1 and a discharge port 8 of the filling pipeline; the multi-stage vibration reduction device includes a plurality of vibration reducers connected to the filling pipeline; an air bag 22 is arranged at one end of the vibration reducer away from the filling pipeline, and a cavity between the air bag 22 and the filling pipeline forms a first chamber 21. The space inside the air bag 22 is a second chamber 23, and a certain volume and pressure of inert gas is pre-filled in the second chamber 23. With such a configuration, the pre-filled inert gas can be used to achieve vibration reduction and buffering effects, thereby reducing pipeline vibration.

[0027] In some embodiments of the utility model, the filling pipeline is composed of several sections of branch pipelines connected in series. The multi-stage vibration reduction device includes several vibration dampers respectively connected to the branch pipelines. Specifically, in one embodiment of the utility model, the number of the branch pipelines is three, and the vibration damper includes a first vibration damper 2, a second vibration damper 3 and a third vibration damper 4 respectively connected to the three branch pipelines. Adjacent branch pipelines are connected by flanges, and the structural structures of the first vibration damper 2, the second vibration damper 3 and the third vibration damper 4 are the same. The flange connection has good sealing and connectivity, which can ensure that the connection between the vibration dampers is tight and reliable. Such a setting can effectively transmit vibration energy while facilitating the installation and maintenance of the device. The device adopts a multi-stage vibration damper design, that is, the first vibration damper 2, the second vibration damper 3 and the third vibration damper 4 connected in series are used to reduce the vibration of the pipeline. Each vibration damper has elastic characteristics and can absorb high-frequency pulsations in the filling pipeline. Such a setting can more effectively reduce the amplitude of pipeline vibration and improve the stability of the system.

[0028] In some embodiments of the utility model, an inspection port 7 is provided at one end of the first shock absorber 2 near the airbag 22. An inspection cover is provided on the outside of the inspection port 7. The inspection cover is connected to the inspection port 7 by bolts. The inspection port 7 is connected to the pressure gauge 5 through an inflation pipe. An inflation valve 6 is provided on the inflation pipe. Such an arrangement can facilitate the inspection and maintenance of the device, and can monitor the pressure of the inert gas in the airbag 22 in real time. The inflation valve 6 can control the inflation and depressurization of the gas in the airbag 22 to adapt to different working conditions. Such an arrangement can improve the reliability and operability of the device.

[0029] The working principle of a filling pipeline vibration reduction device provided by the utility model is further explained below in conjunction with specific embodiments:

[0030] When the instantaneous flow rate of the filling pump is greater than the average flow rate, the pressure of the fluid medium in the filling pipeline increases, and the fluid enters the first chamber 21 in the first shock absorber 2 from the feed port 1. The inert gas in the airbag 22 is compressed, causing the first shock absorber 2 to store part of the fluid. When the pressure in the first chamber 21 of the first shock absorber 2 is greater than the gas pressure in the second chamber 23, the nitrogen airbag 22 in the second chamber 23 contracts, and the gas compression causes the gas pressure in the airbag 22 to increase. When the filling medium passes through the second and third shock absorbers, the changes in the cavity are the same, thereby absorbing the residual hydraulic impact of the medium in the filling pipeline. The shock absorber 22 can absorb the vibration of the filling pipe, improve the stability of the pipe system, and convert the kinetic energy into the pressure potential energy of the gas in the air bag 22, so as to achieve the effect of the vibration reduction device absorbing the pulsation of the fluid medium in the pumping stage. When the pump is reversed, the instantaneous flow entering the filling pipe is less than the average flow, the fluid pressure drops, the gas in the air bag 22 expands, and the fluid stored in the first, second and third shock absorbers is discharged to the pipe, increasing the flow in the pipe, thereby reducing the pulsation of the flow and pressure of the fluid medium in the pipe during the reversing process, so that the flow and pressure of the filling pipe in the whole pumping process tend to be stable.

[0031] In summary, the utility model can effectively reduce pipeline vibration and improve the stability and reliability of the system through the design of this multi-stage shock absorber. At the same time, by bolting the inspection port 7 on the upper part of the first shock absorber 2 and connecting it to the pressure gauge 5 through the inflation pipeline, the inspection and maintenance of the device become more convenient, and the pressure of the inert gas in the airbag 22 can be monitored in real time. The inflation and pressure relief of the gas in the airbag 22 can be controlled by setting the inflation valve 6 to adapt to different working conditions. These designs improve the reliability and operability of the device, reduce pipeline vibration, and ensure the stability of the filling pipeline during the pumping process.

[0032] 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 vibration reduction device, characterized in that: It comprises a filling pipe and a multi-stage vibration reduction device arranged between the feeding port and the discharging port of the filling pipe; the multi-stage vibration reduction device comprises a plurality of vibration reduction devices connected with the filling pipe; an air bag is arranged at one end of the vibration reduction device away from the filling pipe, and the cavity between the air bag and the filling pipe forms a first chamber.

2. The filling pipeline vibration reduction device according to claim 1, characterized in that: The filling pipeline is composed of a plurality of branch pipelines connected in series.

3. The filling pipeline vibration reduction device according to claim 2, characterized in that: The multi-stage vibration reduction device includes a plurality of vibration reducers respectively connected to the branch pipes.

4. The filling pipeline vibration reduction device according to claim 2, characterized in that: The number of the branch pipes is three, and the shock absorber includes a first shock absorber, a second shock absorber and a third shock absorber which are respectively connected to the three branch pipes.

5. The filling pipeline vibration reduction device according to claim 4, characterized in that: Adjacent branch pipes are connected via flanges, and the first shock absorber, the second shock absorber and the third shock absorber have the same structural structure.

6. The filling pipeline vibration reduction device according to claim 1, characterized in that: An inspection port is arranged at one end of the shock absorber close to the air bag.

7. The filling pipeline vibration reduction device according to claim 6, characterized in that: An inspection cover is arranged on the outer side of the inspection opening.

8. The filling pipeline vibration reduction device according to claim 7, characterized in that: The inspection cover is connected to the inspection opening by bolts.

9. The filling pipeline vibration reduction device according to claim 6, characterized in that: The inspection port is connected to the pressure gauge through an air charging pipe.

10. The filling pipeline vibration reduction device according to claim 9, characterized in that: The inflation pipe is provided with an inflation valve.

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