Intelligent high-pressure external water supply system and heading machine

Abstract

The utility model discloses an intelligent high-pressure external water supply system and a heading machine, and solves the problems that components of a high-pressure water supply system in the prior art are easy to damage, and the high-pressure water supply amount, the water pressure and the like are difficult to control. The intelligent high-pressure external water supply system comprises a water storage tank, a water inlet of the water storage tank is connected with a high-pressure water supply pipeline, and the high-pressure water supply pipeline is provided with a filtering device and a high-pressure automatic valve; the water storage tank is provided with a liquid level detection device used for detecting the water level, and the high-pressure automatic valve and the liquid level detection device are both connected with an upper computer. The high-pressure automatic valve and the liquid level detection device are interlocked to control the water supply amount. The high-pressure automatic valve is designed on the high-pressure water supply pipeline and is used for resisting the impact of high-pressure water, so that the impact load of the high-pressure water on the water supply system is reduced. Under the condition that the high-pressure water supply system can stably run for a long time, the water supply amount and the water pressure are effectively and accurately controlled, timed and quantitative water supplementing operation is conducted on the water tank / pool, and therefore the water supply system is intelligent.

Description

TECHNICAL FIELD

[0001] The utility model relates to tunnel construction technical field, especially underground water supply system. BACKGROUND

[0002] In recent years, with the development of city underground comprehensive pipe gallery, cable tunnel, sewage tunnel, coal mine tunnel, it represents the continuous exploration and expansion of underground space, and the depth of underground exploration is deeper and deeper. Whether it is a tunnel boring machine used for excavating these tunnels or a tunnel space environment used after excavation, a water supply system is needed. At present, the underground tunnel burial depth can reach hundreds of meters or even thousands of meters, resulting in high water supply pressure in the deep tunnel, usually 20-40bar or even above 50bar. The water supply pressure used by the tunnel boring machine and the tunnel space environment is 4-10bar, so a pressure relief device is needed on the water supply pipeline to reduce the pressure. Under the impact of high water pressure, the failure rate of the pressure relief valve is high, and the high pressure water pressure difference is large, resulting in fast wear of the water supply pipeline and components. In addition, after a period of long-term operation of the underground water supply system, due to poor water quality, corrosion and other phenomena occur in the pipeline, which is a powerful test for the stability and service life of the water supply system components.

[0003] In recent years, with the development of tunnel construction technology, the demand for stable control of external water supply is increasing in deep tunnel construction, so the research on high-pressure water supply system is gradually increasing. For example, a high-pressure water source pressure reduction water supply system is disclosed in Chinese patent CN109440869A; however, this system has the problems of large space occupation, difficult equipment use, high cost, etc., and has not been maturely applied to deep tunnel construction conditions. Therefore, it is necessary to propose an intelligent high-pressure external water supply system for deep tunnel construction. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies in the above background technology, the utility model provides an intelligent high-pressure external water supply system and a tunneling machine, which solves the problems of easy damage of high-pressure water supply system components, difficulty in controlling high-pressure water supply volume and water pressure.

[0005] The technical scheme of the utility model is as follows: an intelligent high-pressure external water supply system, comprising a water storage tank, a high-pressure water supply pipeline connected to the water inlet of the water storage tank, a filter device and a high-pressure automatic valve arranged on the high-pressure water supply pipeline; a liquid level detection device for detecting the water level is arranged on the water storage tank, and the high-pressure automatic valve and the liquid level detection device are connected to an upper computer; the high-pressure automatic valve and the liquid level detection device are connected to control the water supply volume. A high-pressure automatic valve is designed on the high-pressure water supply pipeline, and the high-pressure automatic valve is used to resist the impact of high-pressure water, thereby reducing the impact load of high-pressure water on the water supply system.

[0006] Further preferably, the high-pressure water supply pipeline is further provided with a pressure detection device for detecting the pressure in the high-pressure water supply pipeline, the pressure detection device being connected to the upper computer; the high-pressure automatic valve is interlocked with the pressure detection device to monitor the filtering device.

[0007] Further preferably, the filtering device performs N-stage filtration on the medium in the high-pressure water supply pipeline, N≥1.

[0008] Further preferably, N=2, the filtering device comprises a first filter and a second filter, and the high-pressure water supply pipeline is provided with the first filter, the high-pressure automatic valve, the pressure detection device and the second filter in sequence along the direction of water flowing into the water storage tank.

[0009] Further preferably, the high-pressure water supply pipeline is further provided with a flow detection device and a safety valve, the flow detection device is arranged between the pressure detection device and the high-pressure automatic valve, and the safety valve is arranged between the second filter and the pressure detection device.

[0010] Further preferably, the high-pressure water supply pipeline and / or the water storage tank is provided with a temperature detection device.

[0011] The tunneling machine comprises the intelligent high-pressure external water supply system.

[0012] The intelligent high-pressure water supply system of the utility model has the high-pressure automatic valve designed on the high-pressure water supply pipeline, uses the high-pressure automatic valve to resist the impact of high-pressure water, thereby reducing the impact load of high-pressure water on the water supply system. The pressure detection device and the high-pressure automatic valve are interlocked to prevent the water supply system from being damaged due to the blockage of the filter. The water tank is provided with the liquid level detection device and is interlocked with the high-pressure automatic valve, the opening degree of the high-pressure automatic valve can be automatically controlled according to the liquid level of the water tank, the water supply amount is accurately controlled, the liquid level of the water tank or the pool is maintained within a certain range, the water supply amount and the water pressure of the high-pressure water supply system are accurately controlled, the water tank / pool is supplied with water in a timed and quantitative manner, and the intelligentization of the water supply system is achieved.

[0013] The intelligent high-pressure external water supply system is used for the heading machine, effectively solves the problems of high water pressure of the water for the heading equipment and environment in the deep underground tunnel, limited pressure reduction capacity of the pressure reducing valve, non-obvious pressure reduction effect, easy damage of the pressure reducing valve and other components, and difficult control of the external water supply system, and improves the water quantity stability and intelligent control rapid response capability of the water demand of the heading equipment and environment in the deep underground tunnel. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Figure 1 It is the schematic diagram of the intelligent high-pressure external water supply system of the present application in embodiment 1.

[0016] Figure 2 It is the control flow chart of the high-pressure external water supply system of the present application.

[0017] Figure 3 It is the schematic diagram of the intelligent high-pressure external water supply system of the present application in embodiment 3. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0019] In the description of the present application, it should be understood that the terms "vertical", "horizontal", "up", "down", "front", "back", "left", "right", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] Example 1, as Figure 1 As shown, an intelligent high-pressure external water supply system includes a water storage tank 7, which can be a water tank or a pool, selected according to the construction conditions. In this embodiment, the inlet of the water storage tank 7 is connected to a high-pressure water supply pipeline 9. It should be noted that this high-pressure water supply pipeline corresponds to one water storage tank, or one high-pressure water supply pipeline can correspond to multiple parallel water storage tanks. This embodiment takes one high-pressure water supply pipeline corresponding to one water storage tank as an example. The high-pressure water supply pipeline 9 is equipped with a filter device and a high-pressure automatic valve 2; the filter device is used for filtering high-pressure water and can adopt multi-stage filtration. The pressure-bearing capacity of the high-pressure automatic valve is 100 bar, which avoids the components downstream of the high-pressure automatic valve 2 from being subjected to high water pressure and damage to the components caused by high-pressure water. Specifically, when the water supply pipeline is switched on and off, a high-pressure water impact will occur. Adding a high-pressure automatic valve can resist the impact force of the high-pressure water pulse, thereby preventing damage to the filter system and other components on the water supply pipeline. In this embodiment, the water storage tank 7 is equipped with a level detection device 8 for detecting the water level. Both the high-pressure automatic valve 2 and the level detection device 8 are connected to a host computer. The host computer can be a PLC controller, and the high-pressure automatic valve 2 and the level detection device 8 are interlocked to control the water supply. Specifically, when the host computer displays that the water tank level is at or below the low level, the high-pressure automatic valve 2 automatically opens to add water; when the host computer displays that the water level has reached the high level, the high-pressure automatic valve 2 automatically closes to stop adding water; when the water tank level is between the low and high levels, the system adjusts the opening of the high-pressure automatic valve according to the water level in the tank or pool 7 to maintain the water level at approximately two-thirds of the tank height. Through the above structural design, precise control of the water supply can be achieved, keeping the water tank level within a certain range. While ensuring the long-term stable operation of the high-pressure water supply system, it effectively and accurately controls the water supply and pressure, completing the timed and quantitative water replenishment operation of the water tank / pool.

[0022] It should be noted that this invention improves the equipment components and does not involve improvements to the circuits or control programs. This invention only controls the operation and shutdown of various electronic devices through a PLC control system. Since the PLC control system is a mature automatic control system in industry, this invention will not elaborate on the circuit and control program content.

[0023] Embodiment 2, an intelligent high-pressure external water supply system, comprising a water storage tank 7, which can be a water tank or a water pool, and is selected according to the construction conditions. In this embodiment, the water inlet of the water storage tank 7 is connected with a high-pressure water supply pipeline 9; in this embodiment, one high-pressure water inlet pipeline corresponds to one water storage tank. The high-pressure water supply pipeline 9 is provided with a filtering device and a high-pressure automatic valve 2; the filtering device is used for filtering high-pressure water, and can adopt multi-stage filtering. The pressure-bearing capacity of the high-pressure automatic valve is 100 bar, which avoids the damage of high-pressure water to the components at the rear end of the high-pressure automatic valve 2. In this embodiment, the water storage tank 7 is provided with a liquid level detection device 8 for detecting the water level, and the high-pressure automatic valve 2 and the liquid level detection device 8 are connected with an upper computer; the upper computer can adopt a PLC controller, and the high-pressure automatic valve 2 and the liquid level detection device 8 are interlocked to control the water supply. Specifically, when the upper computer displays that the water tank liquid level is below the low liquid level, the high-pressure automatic valve 2 is automatically opened to perform the water adding action; when the upper computer displays that the liquid level reaches the high liquid level, the high-pressure automatic valve 2 is automatically closed to stop water adding; when the water tank liquid level is between the low liquid level and the high liquid level, the system adjusts the opening of the high-pressure automatic valve according to the liquid level of the water tank or water pool 7, so that the water tank liquid level is maintained at about two-thirds of the water tank height; as shown in the figure. Figure 2

[0024] In this embodiment, the high-pressure water supply pipeline 9 is also provided with a pressure detection device 4 for detecting the pressure in the high-pressure water supply pipeline, and the pressure detection device 4 is a pressure sensor. The pressure detection device 4 is connected with the upper computer; the high-pressure automatic valve 2 and the pressure detection device 4 are interlocked to monitor the filtering device. Specifically, when the upper computer displays that the pressure at the pressure detection device 4 exceeds the set pressure, the high-pressure automatic valve 2 is triggered to automatically close to stop water adding, and the filter element of the filtering device needs to be replaced. The action of the high-pressure automatic valve 2 is controlled according to the sensing of the liquid level detection device 8 and the pressure detection device 4, which effectively protects the water supply pipeline and components.

[0025] ​In this embodiment, the filtration device performs N-stage filtration on the medium in the high-pressure water supply pipeline 9, where N ≥ 1. As a preferred embodiment, N=2 is used as an example, meaning the filtration device includes a primary filter 1 and a secondary filter 6. To address conditions with relatively poor water quality, the high-pressure water supply pipeline 9 is sequentially equipped with a primary filter 1, a high-pressure automatic valve 2, a pressure detection device 4, and a secondary filter 6 along the direction of water inlet to the water storage tank 7. The filtration accuracy of the secondary filter 6 is higher than that of the primary filter 1. The primary filter performs primary filtration on the liquid entering the high-pressure automatic valve, protecting the valve. The secondary filter performs secondary filtration on the liquid entering the water tank, improving the water quality. The pressure detection device 4 is used to detect the pressure on the inlet pipeline. The pressure detection device signal is interlocked with the opening and closing of the high-pressure automatic valve, triggering an alarm to indicate the need to replace the filter element.

[0026] In this embodiment, the high-pressure water supply pipeline 9 is also equipped with a flow detection device 3 and a safety valve 5. The flow detection device 3 is located between the pressure detection device 4 and the high-pressure automatic valve 2, and the safety valve 5 is located between the secondary filter 6 and the pressure detection device 4. The flow detection device 3 is a flow sensor. When the host computer displays that the pressure at the pressure detection device 4 exceeds the opening pressure of the safety valve 5, the high-pressure automatic valve 2 is triggered to automatically close, stopping water supply. The filter element of the filter device needs to be replaced. This improves the safety and efficiency of the water supply system, while ensuring a smooth external water supply path and stable water volume and pressure.

[0027] Example 3: As Figure 3 As shown, an intelligent high-pressure external water supply system includes a water storage tank 7, which can be a water tank or a pool, selected according to the construction conditions. In this embodiment, the inlet of the water storage tank 7 is connected to a high-pressure water supply pipeline 9; this embodiment takes one high-pressure water inlet pipeline corresponding to one water storage tank as an example. The high-pressure water supply pipeline 9 is equipped with a filter device and a high-pressure automatic valve 2; it should be noted that in this embodiment, the high-pressure automatic valve can be replaced with a high-pressure pneumatic valve; however, the high-pressure automatic valve 2 is preferred. In this embodiment, the water storage tank 7 is equipped with a liquid level detection device 8 for detecting the water level. Both the high-pressure automatic valve 2 and the liquid level detection device 8 are connected to a host computer; the host computer can be a PLC controller, and the high-pressure automatic valve 2 and the liquid level detection device 8 are interlocked to control the water supply. Specifically, when the host computer displays that the water tank level is at or below the low level, the high-pressure automatic valve 2 will automatically open to add water; when the host computer displays that the level has reached the high level, the high-pressure automatic valve 2 will automatically close to stop adding water; when the water tank level is between the low and high levels, the system will adjust the opening of the high-pressure automatic valve according to the water tank or pool 7 level to maintain the water tank level at approximately two-thirds of the tank height.

[0028] The high-pressure water supply pipeline 9 in the embodiment further has a pressure detection device 4 for detecting the pressure in the high-pressure water supply pipeline, and the pressure detection device 4 is a pressure sensor. The pressure detection device 4 is connected to the upper computer; the high-pressure automatic valve 2 is interlocked with the pressure detection device 4 to monitor the filtering device. Specifically, when the upper computer displays that the pressure at the pressure detection device 4 exceeds the set pressure, the high-pressure automatic valve 2 is triggered to automatically close, water supply is stopped, and the filter element of the filtering device needs to be replaced. The action of the high-pressure automatic valve 2 is controlled according to the sensing of the liquid level detection device 8 and the pressure detection device 4, which effectively protects the water supply pipeline and components.

[0029] The filtering device in the embodiment includes a primary filter 1 and a secondary filter 6; in response to a relatively poor water quality condition, the high-pressure water supply pipeline 9 has, in sequence along the water inlet direction to the water storage tank 7, the primary filter 1, the high-pressure automatic valve 2, the pressure detection device 4, and the secondary filter 6; the filtering precision of the secondary filter 6 is higher than that of the primary filter 1. The primary filter performs primary filtering on the liquid entering the high-pressure automatic valve to protect the high-pressure automatic valve; the secondary filter performs secondary filtering on the liquid entering the water tank to improve the water quality in the water tank. The pressure detection device 4 is used to detect the pressure on the water inlet pipeline. The pressure detection device signal is interlocked with the opening and closing of the high-pressure automatic valve for control and alarm to replace the filter element of the filtering device.

[0030] The high-pressure water supply pipeline 9 in the embodiment further has a flow detection device 3 and a safety valve 5, the flow detection device 3 is arranged between the pressure detection device 4 and the high-pressure automatic valve 2, and the safety valve 5 is arranged between the secondary filter 6 and the pressure detection device 4. The flow detection device 3 is a flow sensor. When the upper computer displays that the pressure at the pressure detection device 4 exceeds the opening pressure of the safety valve 5, the high-pressure automatic valve 2 is triggered to automatically close, water supply is stopped, and the filter element of the filtering device needs to be replaced; the safety of the water supply system and the water supply efficiency are improved, and the external water supply path is smooth, the water quantity and water pressure are stable.

[0031] In addition, the high-pressure water supply pipeline 9 and / or the water storage tank 7 in the embodiment can further have a temperature detection device 10. The liquid level detection device 8 is a liquid level sensor; the temperature detection device 10 is a temperature sensor. The temperature detection device 10 cooperates with the high-pressure automatic valve to realize automatic interlocking control of temperature; the high-pressure automatic valve 2 is interlocked with the liquid level detection device 8 to control the water supply quantity, and the water temperature and water level are maintained within a certain range.

[0032] Embodiment 4: A heading machine includes the intelligent high-pressure external water supply system in Embodiment 2 or Embodiment 3; the high-pressure water supply pipeline 9 is connected to the high-pressure water source.

[0033] Whether it is a tunnel boring machine for excavating a tunnel at a large buried depth or the use of the tunnel environment after excavation, water resources are required. The required water source enters the water tank or pool through the high-pressure water in the tunnel, the water supply pipeline and related components on the equipment. Through the high-pressure water supply system, the problem of damage to the water supply pipeline and related components caused by high external water pressure can be effectively solved, thereby ensuring smooth external water supply path, stable water quantity and pressure, and through pressure detection closed-loop control, effectively controlling the automatic water filling of the water tank or pool and related interlocking actions, precisely controlling the opening of the automatic valve, accurately controlling the water quantity of the external water supply, and improving work efficiency. The specific implementation process of the high-pressure water system is as follows:

[0034] 1. The process of high-pressure water supply to the water tank after pressure reduction.

[0035] The high-pressure water source in the tunnel passes through a primary filter 1, flows through a high-pressure automatic valve 2, and then passes through a flow detection device 3. Subsequently, the external water supply passes through a pressure detection device 4, then passes through a safety valve 5, a secondary filter 6, and enters a water storage tank 7. A liquid level detection device 8 can monitor the water tank liquid level. The safety valve 5 can automatically open to supply water and relieve pressure. The pressure detection device 4 detects and displays the external water supply pressure. In the case where external water supply is not required, the high-pressure automatic valve 2 is in a closed state, blocking the external high-pressure water after the high-pressure automatic valve 2. The high-pressure automatic valve 2 bears the pressure of the external water supply. The pressure-bearing capacity of the high-pressure automatic valve is 100 bar. This design avoids the damage to the components behind the high-pressure automatic valve 2 caused by high water pressure and high-pressure water. After the high-pressure automatic valve 2 is opened, the rear pipeline and components are unobstructed, and the pressure in the pipeline is relatively low, far below the pressure-bearing capacity of the water supply pipeline of 25 bar. This effectively solves the damage to the water supply pipeline and components caused by high-pressure water, ensuring smooth external water supply path, stable water quantity and pressure.

[0036] 2. Precise control of the automatic water filling of the water tank and related intelligent actions.

[0037] The automatic water filling function of the water storage tank 7 mainly relies on the interlocking control of the liquid level detection device 8, the pressure detection device 4 and the high-pressure automatic valve 2. First, when the upper computer displays that the water tank liquid level is at or below the low liquid level, the high-pressure automatic valve 2 automatically opens to perform the water filling action. When the upper computer displays that the liquid level reaches the high liquid level, the high-pressure automatic valve 2 will automatically close to stop water filling. When the water tank liquid level is between the low liquid level and the high liquid level, the system will adjust the opening of the high-pressure automatic valve according to the liquid level of the water tank or pool 7, so that the water tank liquid level is maintained at about two-thirds of the water tank height. When the upper computer displays that the pressure detection device 4 is above the opening pressure of the safety valve 5, the high-pressure automatic valve 2 is automatically closed to stop water filling, and the filter device cartridge needs to be replaced. The action of the high-pressure automatic valve 2 is controlled according to the sensing of the liquid level detection device 8 and the pressure detection device 4, which effectively protects the water supply pipeline and components.

[0038] Through the above two processes, the problems of high water pressure of water for large-buried-depth underground tunnel excavation equipment and environment, limited pressure reduction capacity of pressure reducing valve, non-obvious pressure reduction effect, easy damage of pressure reducing valve and other components, and difficulty in controlling external water supply system are effectively solved; and the water quantity stability and intelligent control rapid response capability of water demand for large-buried-depth underground tunnel excavation equipment and environment are improved.

[0039] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An intelligent high pressure external water supply system, characterized in that: The high-pressure water supply pipeline (9) is further provided with a pressure detection device (4) for detecting the pressure in the high-pressure water supply pipeline, and the pressure detection device (4) is connected with the upper computer; the high-pressure automatic valve (2) and the pressure detection device (4) are interlocked to monitor the filter device.

2. The intelligent high-pressure externally supplied water system according to claim 1, characterized in that: The pressure detection device (4) is a pressure sensor. 3.The intelligent high-pressure externally supplied water system according to claim 2, characterized in that: The filter device performs N-stage filtration on the medium in the high-pressure water supply pipeline (9), and N≥1.

4. The intelligent high-pressure externally supplied water system according to claim 1 or 2 or 3, characterized in that: The N=2, the filter device includes a first filter (1) and a second filter (6), and the high-pressure water supply pipeline (9) is sequentially provided with the first filter (1), the high-pressure automatic valve (2), the pressure detection device (4) and the second filter (6) along the water inlet direction of the water storage tank (7).

5. The intelligent high-pressure externally supplied water system according to claim 4, characterized in that: The high-pressure water supply pipeline (9) is further provided with a flow detection device (3) and a safety valve (5), the flow detection device (3) is arranged between the pressure detection device (4) and the high-pressure automatic valve (2), and the safety valve (5) is arranged between the second filter (6) and the pressure detection device (4). 6.The intelligent high-pressure externally supplied water system according to claim 5, characterized in that: The flow detection device (3) is a flow sensor; and the filtering precision of the second filter (6) is higher than that of the first filter (1). 7.The intelligent high-pressure externally supplied water system according to claim 6, characterized in that: The high-pressure water supply pipeline (9) and / or the water storage tank (7) is provided with a temperature detection device (10). 8.The intelligent high-pressure externally supplied water system according to claim 7, characterized in that: The liquid level detection device (8) is a liquid level sensor; and the temperature detection device (10) is a temperature sensor. 9.The intelligent high-pressure externally supplied water system according to claim 1 or 8, characterized in that: The intelligent high-pressure external water supply system comprises the intelligent high-pressure external water supply system according to any one of claims 1-9; and the high-pressure water supply pipeline (9) is connected with a high-pressure water source.

10. A heading machine characterized by: ​

Images