Bean gravel pump energy-saving system and bean gravel conveying system

Abstract

The utility model discloses a pea gravel pump energy-saving system and a pea gravel conveying system, the pea gravel pump energy-saving system comprises an automatic valve, an air volume sensor and a pressure sensor which are arranged on an air inlet pipeline of a pea gravel pump, and the automatic valve, the air volume sensor, the pressure sensor and the pea gravel pump are all connected with a control unit; the pea gravel conveying system comprises the pea gravel pump energy-saving system. The control unit controls the rotating speed of a motor of the pea gravel pump according to the real-time detection structure of the pressure sensor and can also control the opening degree of the automatic valve according to the real-time detection structures of the air volume sensor and the pressure sensor. The problems that a pea gravel pump is large in energy consumption, an air inlet pipeline cannot be automatically adjusted, and the pressure is too high due to pipeline blockage can be effectively solved, the construction cost is effectively reduced, the construction efficiency is improved, and the development of the heading machine in the environment-friendly, low-carbon and intelligent directions is promoted.

Description

Technical Field

[0001] The utility model relates to the technical field of pea gravel pumps, in particular to a pea gravel pump energy-saving system and a pea gravel conveying system. Background Art

[0002] During the construction of the shield TBM, an annular gap will be formed between the pipe segment and the surrounding rock. Pea gravel backfill grouting is used to fill the annular gap. In order to meet the excavation efficiency, the designed pea gravel injection system generally uses two pea gravel pumps to operate simultaneously. The principle of the pea gravel pump is to use air blowing to spray the pea gravel that falls into the rotating pump body along the pipeline to the back filling of the pipe segment. However, the pea gravel pump needs to continuously consume a large amount of industrial air during operation, which consumes huge energy. Therefore, how to achieve energy-saving transportation is of great significance to improving the efficiency of backfill grouting construction and reducing construction costs.

[0003] The existing pea gravel pump injection system mainly controls the air intake by manually adjusting the manual valve of the air intake pipeline. The operator controls the air intake based on the motor speed and load based on experience, and the motor speed is adjusted according to the excavation speed. This method is overly dependent on manual labor, has poor reliability and low accuracy. In actual working conditions, the valve may always be in a fully open state, which consumes a lot of energy and greatly increases the construction cost.

[0004] For example, the invention patent with application number 201911285166.1 discloses a bean gravel pump, which describes the function of promptly shutting down the bean gravel pump when the pipeline is blocked by setting a monitoring device at the end of the injection channel to monitor the bean gravel backfill on the top of the pipe segment, thereby preventing explosion and other accidents caused by untimely detection of pipeline blockage. The bean gravel pump optimizes the safety of pipeline transportation, but does not consider optimizing the gas source control and energy-saving transportation function of the injection pipeline.

[0005] Another example is the utility model patent with patent application number 202321486908.9, which discloses a rotary friction pair lubrication energy-saving system and a bean gravel pump. By collecting the torque parameter signal of the rotary pair to control the grease controller to start, the intermittent injection control of the grease at the position of the rotary friction pair is realized, which effectively reduces the amount of grease and the working time of the grease pump, thereby achieving energy saving and environmental protection. The bean gravel pump takes into account the energy-saving and environmental protection function of the grease system, but does not consider the energy-saving design of the conveying system.

[0006] Therefore, it is urgent to design an energy-saving solution for the conveying system of the pea gravel pump.

[0007] It should be particularly noted that the above technical information is only intended to deepen the understanding of the overall background technology of the present utility model, and should not be regarded as admitting or implying in any form that the above technical information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0008] In view of the deficiencies in the above-mentioned background technology, the utility model proposes a pea gravel pump energy-saving system and a pea gravel conveying system, which solves the technical problem of high energy consumption of the existing pea gravel pump conveying system.

[0009] The technical solution of this application is:

[0010] A bean gravel pump energy-saving system includes an automatic valve, an air volume sensor, and a pressure sensor arranged on the air intake pipeline of the bean gravel pump, wherein the automatic valve, the air volume sensor, the pressure sensor, and the bean gravel pump are all connected to a control unit. This technical solution can use different types of sensors to measure air volume data and wind pressure data and feed them back to the control unit. The control unit controls the motor speed of the bean gravel pump according to the real-time detection structure of the pressure sensor, and can also control the opening of the automatic valve according to the real-time detection structure of the air volume sensor and the pressure sensor. It can effectively solve the problems of high energy consumption of the bean gravel pump, the inability to automatically adjust the air intake pipeline, and excessive pressure caused by pipeline blockage, effectively reducing construction costs, improving construction efficiency, and promoting the development of tunnel boring machines in the direction of green, low-carbon, and intelligent.

[0011] As a preferred technical solution for the bean gravel pump energy-saving system, the air volume sensor and the pressure sensor are arranged on the air intake pipe between the automatic valve and the bean gravel pump, which can monitor the air volume and pressure more accurately, and then accurately feed back the measured data to the control unit, so that the control unit can adjust the motor speed of the automatic valve and the bean gravel pump more timely and accurately.

[0012] As a preferred technical solution of the pea gravel pump energy-saving system, a manual valve is provided on the air intake pipe. The manual valve can be used as a backup and can be used in an emergency when the automatic valve fails, and can also be used to debug the automatic control effect of the automatic valve; in addition, the manual valve can also work together with the automatic valve, that is, automatic adjustment and manual adjustment work together.

[0013] As a preferred technical solution of the pea gravel pump energy-saving system, the manual valve is arranged on the air intake pipeline between the air volume sensor and the pressure sensor.

[0014] As a preferred technical solution of the bean gravel pump energy-saving system, the control unit, the air volume sensor, the pressure sensor, and the bean gravel pump constitute a negative feedback circuit for controlling the opening of the automatic valve.

[0015] As a preferred technical solution of the pea gravel pump energy-saving system, the control unit and the pressure sensor constitute a negative feedback circuit for controlling the motor speed of the pea gravel pump.

[0016] As a preferred technical solution of the pea gravel pump energy-saving system, the control unit is an industrial computer or a host computer.

[0017] As a preferred technical solution of the bean gravel pump energy-saving system, the automatic valve is a pneumatic regulating valve, a hydraulic regulating valve or an electric regulating valve. As long as the valve opening can be adjusted, different types of automatic regulating valves can be used.

[0018] A pea gravel conveying system comprises the pea gravel pump energy-saving system described in any one of the above technical solutions, wherein the pea gravel pump is connected to an injection pipeline.

[0019] As a preferred technical solution of the pea gravel conveying system, the injection pipeline is used to inject pea gravel into the back annular cavity of the tunnel lining segment.

[0020] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0021] (1) It can measure the air volume and pressure of the intake pipeline in real time and feed it back to the control unit for signal processing;

[0022] (2) The automatic adjustment function of pipelines is realized, energy consumption matches demand, energy conservation and environmental protection are achieved, and construction costs are reduced;

[0023] (3) It has a high-pressure alarm function, which improves the safety of the bean gravel pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the principle of the medium bean gravel conveying system of the utility model.

[0026] Description of Figure Numbers:

[0027] Electric regulating valve 1;

[0028] Air volume sensor 2;

[0029] Manual valve 3;

[0030] Pressure sensor 4;

[0031] Pea gravel pump 5;

[0032] Industrial computer 6;

[0033] Intake pipe 7;

[0034] Injection pipeline 8;

[0035] Tunnel lining segments 9. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the core concept of the utility model and the following embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] The present application provides these embodiments to make the present application thorough and complete, and to fully express the scope of the present application to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0038] It should be noted that, in the description of this application, unless otherwise specified, the meaning of "several" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", "axial", "radial" and the like indicate positions or positional relationships only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0039] In addition, the words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0040] It should also be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it 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 it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0041] All terms used in this application have the same meaning as those understood by those of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0042] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0043] A pea gravel pump energy saving system, such as Figure 1 As shown, it includes an automatic valve, an air volume sensor 2, and a pressure sensor 4 arranged on the air intake pipeline 7 of the bean gravel pump 5, and the automatic valve, the air volume sensor 2, the pressure sensor 4, and the bean gravel pump 5 are all connected to the control unit.

[0044] In the specific implementation, different types of sensors can be used to measure the air volume data and wind pressure data and feed them back to the control unit. The control unit controls the motor speed of the bean gravel pump 5 according to the real-time detection structure of the pressure sensor 4, and can also control the opening of the automatic valve according to the real-time detection structure of the air volume sensor 2 and the pressure sensor 4. The problems of high energy consumption of the bean gravel pump, the inability to automatically adjust the air intake pipeline 7, and excessive pressure caused by pipeline blockage can be effectively solved, which effectively reduces the construction cost, improves the construction efficiency, and promotes the development of tunnel boring machines in the direction of green, low-carbon and intelligent.

[0045] On the basis of the above-mentioned implementation manner, as a preferred implementation manner of the bean gravel pump energy-saving system, the air volume sensor 2 and the pressure sensor 4 are arranged on the air intake pipe 7 between the automatic valve and the bean gravel pump 5, which can more accurately monitor the air volume and pressure, and then accurately feed back the measured data to the control unit, so that the control unit can adjust the motor speed of the automatic valve and the bean gravel pump 5 more timely and accurately.

[0046] On the basis of the above-mentioned implementation, as a preferred implementation of the energy-saving system of the bean gravel pump, a manual valve 3 is provided on the air intake pipeline 7. The manual valve 3 can be used as a backup and can be used in an emergency when the automatic valve fails, and can also be used to debug the effect of the automatic control of the automatic valve; in addition, the manual valve 3 can also work together with the automatic valve, that is, the automatic adjustment and the manual adjustment work together.

[0047] On the basis of the above implementation, as a preferred implementation of the pea gravel pump energy-saving system, the manual valve 3 is arranged on the air intake pipeline 7 between the air volume sensor 2 and the pressure sensor 4.

[0048] On the basis of the above implementation, as a preferred implementation of the pea gravel pump energy-saving system, the control unit, the air volume sensor 2, the pressure sensor 4, and the pea gravel pump 5 constitute a negative feedback circuit for controlling the opening of the automatic valve.

[0049] On the basis of the above implementation, as a preferred implementation of the pea gravel pump energy-saving system, the control unit and the pressure sensor 4 constitute a negative feedback circuit for controlling the motor speed of the pea gravel pump 5 .

[0050] On the basis of the above implementation, as a preferred implementation of the pea gravel pump energy-saving system, the control unit is an industrial computer 6 or a host computer.

[0051] On the basis of the above implementation, as a preferred implementation of the bean gravel pump energy-saving system, the automatic valve is a pneumatic regulating valve, a hydraulic regulating valve or an electric regulating valve 1. As long as the valve opening can be adjusted, different types of automatic regulating valves can be used.

[0052] A pea gravel conveying system comprises the pea gravel pump energy-saving system described in any one of the above technical solutions, wherein the pea gravel pump 5 is connected to an injection pipeline 8.

[0053] On the basis of the above-mentioned implementation manner, as a preferred implementation manner of the pea gravel conveying system, the injection pipeline 8 is used to inject pea gravel into the back annular cavity of the tunnel lining segment 9.

[0054] As a preferred implementation of the bean gravel conveying system, it includes an electric regulating valve, an air volume sensor, a manual ball valve, a pressure sensor, a bean gravel pump, an industrial computer, pipeline accessories, etc. The air volume sensor and the pressure sensor are installed on the air intake pipeline, and can monitor the air volume and pressure of the air intake pipeline in real time; the electric regulating valve and the manual ball valve are installed on the air intake pipeline, and are used to automatically and manually adjust the size and on-off of the air channel; the industrial controller is installed on the bean gravel pump, and the real-time monitored bean gravel pump motor speed, pressure signal, and air volume signal are fed back to the industrial computer, and after being processed by the PLC, a control signal is sent to the electric regulating valve, thereby adjusting the valve size.

[0055] In the actual operation of this embodiment, the industrial computer system gives a theoretical air volume value based on the collected motor speed and load signal of the bean gravel pump, and compares it with the air volume value monitored by the air volume sensor, so as to adjust the opening of the electric regulating valve of the air intake pipeline in real time to reduce unnecessary air consumption. When the pressure feedback value monitored by the pressure sensor exceeds the reasonable range, the motor speed is timely reduced until the pressure falls back to the theoretical recommended range while ensuring that the air volume remains unchanged.

[0056] Specific as Figure 1 As shown, the electric regulating valve 1 is installed on the air intake pipeline 7, which can automatically adjust the pipeline valve opening; the air volume sensor 2 and the pressure sensor 4 are installed on the air intake pipeline 7, which can monitor the air volume and air pressure of the air intake pipeline in real time; the manual ball valve 3 is installed on the air intake pipeline 7, which can manually adjust the pipeline valve opening; the industrial computer 6 is installed on the bean gravel pump 5, which is used to receive signals, process signals and send control signals; the bean gravel is injected into the annular cavity at the back of the pipe segment through the injection pipeline 8, and the bean gravel injection amount can be matched with different excavation speeds by adjusting the motor speed of the pump.

[0057] The specific control methods are as follows:

[0058] In the excavation mode, the bean gravel pump 5 rotates continuously driven by the motor, receives the bean gravel that falls into its selected pump body, and injects the bean gravel into the back of the pipe segment through the injection pipeline 8. Industrial air continuously provides injection power to the bean gravel pump through the air intake pipeline 7. The motor speed can be adjusted on the industrial computer 6. The air volume sensor 2 and the pressure sensor 4 feed back the monitored air intake volume and air intake pressure to the industrial computer 6. The industrial computer 6 recommends a theoretical air volume value for the received signals - the motor speed and air intake pressure of the bean gravel pump through PLC processing, and compares it with the air volume signal fed back by the air volume sensor 2, and sends a control signal to the electric control valve 1 to adjust the opening size of the electric control valve 1.

[0059] If the theoretical value < monitoring value, the electric control valve reduces the valve opening until the detection value = detection value; if the theoretical value > monitoring value, the electric control valve increases the valve opening until the detection value = detection value, thereby ensuring that the intake volume matches the demand and avoiding unnecessary energy waste.

[0060] When the pressure sensor monitoring value exceeds the reasonable range, the motor speed is reduced in time until the pressure drops back to the theoretical recommended range while ensuring the air volume remains unchanged, avoiding the risk of excessive pressure due to pipeline blockage and improving the safety of the bean gravel pump.

[0061] The parts not described in detail in the present invention are all conventional technical means known to those skilled in the art.

[0062] The above content shows and describes the basic principle, main features and beneficial effects of the utility model. The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pea gravel pump energy saving system, characterized by: The invention comprises an automatic valve, an air volume sensor (2) and a pressure sensor (4) arranged on an air intake pipe (7) of a bean-gravel pump (5); the automatic valve, the air volume sensor (2), the pressure sensor (4) and the bean-gravel pump (5) are all connected to a control unit; the control unit, the air volume sensor (2), the pressure sensor (4) and the bean-gravel pump (5) form a negative feedback circuit for controlling the opening of the automatic valve.

2. The pea gravel pump energy saving system according to claim 1, characterized in that: The air volume sensor (2) and the pressure sensor (4) are arranged on the air intake pipeline (7) between the automatic valve and the pea gravel pump (5).

3. The pea gravel pump energy saving system according to claim 1 or 2, characterized in that: The air intake pipeline (7) is provided with a manual valve (3).

4. The pea gravel pump energy saving system according to claim 3, characterized in that: The manual valve (3) is arranged on the air intake pipeline (7) between the air volume sensor (2) and the pressure sensor (4).

5. The pea gravel pump energy saving system according to any one of claims 1, 2 and 4, characterized in that: The control unit and the pressure sensor (4) form a negative feedback circuit for controlling the motor speed of the pea gravel pump (5).

6. The pea gravel pump energy saving system according to any one of claims 1, 2 and 4, characterized in that: The control unit is an industrial computer (6) or a host computer.

7. The pea gravel pump energy saving system according to any one of claims 1, 2 and 4, characterized in that: The automatic valve is a pneumatic regulating valve, a hydraulic regulating valve or an electric regulating valve (1).

8. A pea gravel conveying system, characterized by: It comprises the pea gravel pump energy-saving system according to any one of claims 1 to 7, wherein the pea gravel pump (5) is connected to an injection pipeline (8).

9. The pea gravel conveying system according to claim 8, characterized in that: The injection pipeline (8) is used to inject pea gravel into the back annular cavity of the tunnel lining segment (9).

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