Water supply and drainage telescopic water guide pipe for emergency rescue

Abstract

This invention discloses a telescopic water supply and drainage pipe for emergency rescue, comprising an outer telescopic water supply pipe, an inner telescopic water supply pipe, a rear-end guide sealing and silt removal assembly, and a front-end guide dust removal assembly. The rear-end guide sealing and silt removal assembly is welded to the inner pipe via a rear-end guide piston; the front-end guide dust removal assembly is welded to the outer pipe via a support port of the front-end guide support. This invention, through its rear-end guide sealing and silt removal and front-end guide dust removal structures, solves the problem of existing telescopic water supply and drainage pipes for emergency rescue where silt and other impurities easily enter between the inner and outer pipe layers, damaging the pipe wall and sealing guide components. Furthermore, the telescopic water supply pipe of this invention offers significantly improved reliability.

Description

Technical Field

[0001] This invention relates to the field of emergency fire rescue and drainage equipment technology, and in particular to a retractable water supply and drainage pipe for emergency rescue. Background Technology

[0002] Urban flooding refers to the phenomenon of water accumulation in cities caused by heavy or continuous rainfall exceeding their drainage capacity. Against the backdrop of rapid urbanization and frequent extreme weather events, many large and medium-sized cities in my country have repeatedly suffered from urban flooding. Beijing once experienced a severe rainstorm, with an average rainfall of 215 millimeters in the urban area, resulting in 79 deaths and nearly 10 billion yuan in economic losses. Shanghai also experienced a once-in-a-century rainstorm, with more than 150 streets in the central urban area flooded and over 10,000 households inundated. Frequent urban flooding not only causes enormous losses to the lives and property of urban residents but also seriously disrupts normal social order.

[0003] Meanwhile, with the rapid development of my country's petrochemical industry, the reserves of flammable and explosive hazardous chemicals are enormous. In the event of a fire, a large supply of water and liquids is inevitably required. A major factor contributing to firefighting failures is insufficient water supply intensity. Therefore, to effectively respond to large-scale fires in petrochemical plants and other similar locations, a sufficient water supply intensity is essential. Long-range, high-flow-rate water supply systems have emerged as a new type of firefighting equipment. In the "7.16" fire accident in Dalian, the long-range, high-flow-rate water supply system provided nearly 65,000 tons of water to the fire site without interruption, playing an indispensable role in extinguishing the fire.

[0004] As a core component of emergency rescue equipment for urban flooding and long-distance, high-flow water supply systems in petrochemical plants, the reliability of large-diameter water supply and drainage telescopic pipes plays a crucial role in the success of the entire equipment's rescue mission. Currently, these large-diameter water supply and drainage telescopic pipes mainly suffer from the following defects:

[0005] 1. The rear-end guided and front-end guided sealing structure makes it easy for impurities such as mud and sand to enter between the inner and outer pipe layers, damaging the pipe wall and sealing guide components, thus causing equipment damage.

[0006] 2. Due to the large roundness tolerance of existing large-diameter pipes, the front-end sealing structure can only adopt an air-filled sealing structure, which has poor reliability. Summary of the Invention

[0007] The purpose of this invention is to provide a retractable water supply and drainage pipe for emergency rescue, in order to solve the problems existing in the prior art. By using a rear-end guiding and sealing structure to remove mud and sand and a front-end guiding and dust removal structure, the invention solves the problem that mud and sand and other impurities can easily enter between the inner and outer pipe layers of existing retractable water supply and drainage pipes for emergency rescue, damaging the pipe wall and sealing guide components. At the same time, the retractable water pipe of this invention has better reliability.

[0008] To achieve the above objectives, the present invention provides the following solution: The present invention provides a telescopic water supply and drainage pipe for emergency rescue, including an outer telescopic water supply pipe, an inner telescopic water supply pipe, a rear-end guide sealing and silt removal assembly, and a front-end guide dust removal assembly;

[0009] The rear-end guide sealing and desanding assembly includes a rear-end guide piston, a rear-end mounting ring, a rear-end Y-shaped sealing ring, a rear-end guide ring, and a rear-end desanding ring. The rear-end guide sealing and desanding assembly is welded to the inner pipe of the telescopic water guide pipe through the support port of the rear-end guide piston; the rear-end mounting ring is connected to the rear-end guide piston; the rear-end Y-shaped sealing ring and the rear-end guide ring are respectively installed in the slots of the rear-end guide piston; the rear-end desanding ring is installed in the annular groove of the rear-end mounting ring or the rear-end guide piston.

[0010] The front-end guiding dust removal assembly includes a front-end guiding support, a front-end retaining ring, a front-end guiding ring, and a front-end mounting ring. The front-end guiding dust removal assembly is welded to the outer pipe of the telescopic water guide pipe through the support port of the front-end guiding support. The front-end retaining ring is connected to the front-end guiding support by bolts. The front-end guiding ring is installed in the retaining groove of the front-end guiding support or in the retaining groove formed by the front-end guiding support and the intermediate retaining ring. The front-end mounting ring is installed in the annular groove of the front-end retaining ring or in the annular groove between the front-end retaining ring and the intermediate retaining ring.

[0011] Preferably, the rear mounting ring is a rear sand removal ring support ring, and the rear sand removal ring support ring is connected to the rear guide piston by threads or welding; the rear sand removal ring is installed in the annular groove of the rear sand removal ring support ring.

[0012] Preferably, the rear sand removal ring and the rear sand removal support ring are respectively provided with a rear sand removal ring opening and a support ring opening.

[0013] Preferably, the rear mounting ring is a rear guide sand removal ring, which is connected to the rear guide piston via a snap key; the rear sand removal ring is installed in the ring groove of the rear guide piston.

[0014] Preferably, the rear guide piston is provided with a piston opening.

[0015] Preferably, when the front guide ring is installed in the slot of the front guide support and tightened by the front retaining ring; the front mounting ring is a front dust removal ring, which is installed in the annular groove of the front retaining ring.

[0016] Preferably, the front-end guide dust removal assembly further includes an oil injection nozzle and a breather valve, which are respectively installed on the opening of the front-end guide support. The oil injection nozzle is used to inject lubricating oil between the front-end guide ring and the inner tube of the telescopic water guide pipe, and the breather valve is used for air intake and exhaust during the telescopic process.

[0017] Preferably, when the front guide ring is installed in the groove formed by the front guide support and the intermediate retaining ring, the front retaining ring, the intermediate retaining ring and the front guide support are connected by bolts; the front mounting ring is a front inflatable sealing ring, which is installed in the annular groove between the front retaining ring and the intermediate retaining ring.

[0018] The present invention achieves the following beneficial technical effects compared to the prior art:

[0019] 1. A new type of large-diameter telescopic water supply and drainage pipe for emergency rescue is proposed, featuring a rear-end guiding and sealing structure for removing mud and sand, and a front-end guiding structure for removing dust. This solves the problem that existing telescopic water supply and drainage pipes for emergency rescue often have mud and sand or other impurities that can easily enter between the inner and outer pipe layers, damaging the pipe wall and sealing guide components.

[0020] 2. To increase reliability, this invention further proposes a rear-end sealing and sand removal structure, and a front-end guiding and sealing structure. This solves the problem that existing large-diameter pipes have large roundness tolerances, and the front-end sealing structure can only use an air-filled gas-filled sealing structure, resulting in poor reliability. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A cross-sectional view of the overall structure of a large-diameter telescopic water supply and drainage pipe for emergency rescue provided by the present invention;

[0023] Figure 2 for Figure 1 View A in the middle;

[0024] Figure 3 for Figure 1 Enlarged view of the rear-end guide seal sludge removal structure;

[0025] Figure 4 for Figure 1 Enlarged view of the front-end dust collection structure;

[0026] Figure 5 Enlarged view of another type of rear-end guided seal desilting structure;

[0027] Figure 6 An enlarged view of another front-end guide sealing structure;

[0028] The labels in the diagram are as follows: 1. Outer pipe of the telescopic water guide pipe; 1.1 Opening of the outer pipe; 2. Inner pipe of the telescopic water guide pipe;

[0029] 3. Rear end guide seal desanding assembly; 3.1 Rear end guide piston; 3.2 Rear end Y-type seal ring; 3.3 Rear end guide ring; 3.4 Rear end desanding ring; 3.4.1 Rear end desanding ring opening; 3.5 Rear end desanding ring support ring; 3.5.1 Support ring opening;

[0030] 4. Front-end guide dust collector assembly; 4.1. Front-end dust collector ring; 4.2. Front-end retaining ring; 4.3. Front-end guide ring; 4.4.5. Oil injection nozzle; 4.5. Exhaust port; 4.6. Front-end guide support;

[0031] 5. Rear end guide seal desanding assembly; 5.1 Rear end guide piston; 5.1.1 Piston opening; 5.2 Rear end guide ring; 5.3 Rear end Y-type seal ring; 5.4 Rear end desanding ring; 5.5 Key; 5.6 Rear end guide desanding ring;

[0032] 6. Front-end guide sealing assembly; 6.1. Front-end retaining ring; 6.2. Front-end inflatable sealing ring; 6.2.1. Front-end inflatable sealing ring retaining edge; 6.3. Middle retaining ring; 6.4. Front-end guide ring; 6.4.1. Front-end guide ring groove; 6.5. Front-end guide support; Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] The purpose of this invention is to provide a retractable water supply and drainage pipe for emergency rescue, in order to solve the problems existing in the prior art. By using a rear-end guiding and sealing structure to remove mud and sand and a front-end guiding and dust removal structure, the invention solves the problem that mud and sand and other impurities can easily enter between the inner and outer pipe layers of existing retractable water supply and drainage pipes for emergency rescue, damaging the pipe wall and sealing guide components. At the same time, the retractable water pipe of this invention has better reliability.

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] like Figure 1-6As shown, this embodiment provides a large-diameter telescopic water supply and drainage pipe for emergency rescue, including an outer telescopic water pipe 1, an inner telescopic water pipe 2, a rear-end guide sealing and sand removal assembly 3, and a front-end guide dust removal assembly 4. The rear-end guide sealing and sand removal assembly 3 includes a rear-end guide piston 3.1, a rear-end Y-shaped sealing ring 3.2, a rear-end guide ring 3.3, a rear-end sand removal ring 3.4, a rear-end sand removal ring opening 3.4.1, a rear-end sand removal ring support ring 3.5, and a support ring opening 3.5.1. The front-end guide dust removal assembly 4 includes a front-end dust removal ring 4.1, a front-end retaining ring 4.2, a front-end guide ring 4.3, an oil injection nozzle 4.3, a breather valve 4.5, and a front-end guide support 4.6. The rear-end guide sealing and sand removal and the front-end guide dust removal structure prevent sand and other impurities from easily entering between the inner and outer pipe layers and damaging the pipe wall and sealing guide components. A diversion hole is opened at the outer pipe 1 of the telescopic water guide pipe. The existing structure only has one large diversion hole in the outer pipe. In this embodiment, several small outer pipe openings 1.1 are opened at the outer pipe 1 of the telescopic water guide pipe, which can effectively prevent the sealing ring, sand removal ring and guide ring from being damaged and improve the reliability of the equipment.

[0037] The rear-end guide sealing and sand removal assembly 3 of this invention is welded to the inner tube 2 of the telescopic water guide pipe via the support port of the rear-end guide piston 3.1; the rear-end sand removal ring support ring 3.5 is connected to the rear-end guide piston 3.1 by threads or welding; the rear-end Y-type sealing ring 3.2 and the rear-end guide ring 3.3 are respectively installed in the groove of the rear-end guide piston 3.1; the rear-end sand removal ring 3.4 is installed in the annular groove of the rear-end sand removal ring support ring 3.5. The rear-end Y-type sealing ring 3.2 serves a sealing function, the rear-end guide ring 3.3 serves a guiding function, the rear-end sand removal ring 3.4 serves a sand removal function, and the opening 3.4.1 of the rear-end sand removal ring and the opening 3.5.1 of the support ring serve a secondary sand removal and sand guiding function.

[0038] As another embodiment of the aforementioned rear-end guide sealing and desanding assembly 3, the rear-end guide sealing and desanding assembly 5 includes a rear-end guide piston 5.1, a piston opening 5.1.1, a rear-end guide ring 5.2, a rear-end Y-shaped sealing ring 5.3, a rear-end desanding ring 5.4, a retaining key 5.5, and a rear-end guide desanding ring 5.6. The rear-end guide sealing and desanding assembly 5 is welded to the inner tube 2 of the telescopic water guide pipe through the support port of the rear-end guide piston 5.1. The rear-end guide desanding ring 5.6 is connected to the rear-end guide piston 5.1 through the retaining key 5.5. The rear-end Y-shaped sealing ring 5.3 and the rear-end guide ring 5.2 are respectively installed in the retaining groove of the rear-end guide piston 5.1. The rear-end desanding ring 5.4 is installed in the annular groove of the rear-end guide piston 5.1. The rear-end Y-shaped sealing ring 5.3 serves a sealing function, the rear-end guide ring 5.2 and the rear-end guide desanding ring 5.6 serve a guiding function, the rear-end guide desanding ring 5.6 serves a desanding function, and the piston opening 5.1.1 serves a desanding function.

[0039] The front-end guide dust removal assembly 4 of this invention is welded to the outer tube 1 of the telescopic water guide pipe through the support port of the front-end guide support 4.6; the front-end retaining ring 4.2 is connected to the front-end guide support 4.6 by bolts; the front-end guide ring 4.3 is installed in the retaining groove of the front-end guide support 4.6 and is tightened by the front-end retaining ring 4.2; the front-end dust removal ring 4.1 is installed in the annular groove of the front-end retaining ring 4.2; the oil injection nozzle 4.3 and the breather valve 4.5 are respectively installed on the opening of the front-end guide support 4.6; the front-end guide ring 4.3 plays a guiding role, the front-end dust removal ring 4.1 plays a dust removal role, the oil injection nozzle 4.3 is used for adding lubricating oil between the front-end guide ring 4.3 and the inner tube 2 of the telescopic water guide pipe, and the breather valve 4.5 plays the role of air intake and exhaust during the telescopic process.

[0040] As another embodiment of the front-end guiding dust collector assembly 4, the front-end guiding sealing assembly 6 includes a front-end retaining ring 6.1, a front-end inflatable sealing ring 6.2, a front-end inflatable sealing ring retaining edge 6.2.1, an intermediate retaining ring 6.3, a front-end guide ring 6.4, a front-end guide ring groove 6.4.1, and a front-end guide support 6.5. The front-end guiding sealing assembly 6 is welded to the outer pipe 1 of the telescopic water guide pipe through the support port of the front-end guide support 6.5. The front-end retaining ring 6.1, the intermediate retaining ring 6.3, and the front-end guide support 6.5 are connected by bolts. The front-end guide ring 6.4 is installed on the front... The end guide support 6.5 and the intermediate retaining ring 6.3 form a groove; the front inflatable sealing ring 6.2 is installed in the annular groove between the front retaining ring 6.1 and the intermediate retaining ring 6.3; the front guide ring 6.4 serves as a guide, and the front inflatable sealing ring 6.2 serves as a seal, further increasing the reliability of the rear seal; the front inflatable sealing ring retaining edge 6.2.1 is embedded in the retaining edge of the intermediate retaining ring 6.3 to secure it and prevent it from falling off; the front guide ring groove 6.4.1 can drain the seepage water between the inner and outer pipe layers, and can also serve as an air intake and exhaust valve.

[0041] Working process and working principle of retractable water supply and drainage pipes for emergency rescue:

[0042] During water supply and drainage, the inner pipe 2 of the telescopic water guide pipe extends to the working position. During water diversion, the water flow generates positive pressure inside the pipe. Due to the sealing effect of the rear Y-type sealing ring 3.2 or 5.3, the water flow will not flow from the gap between the inner and outer pipes to the front end. Due to the effect of the rear sand removal ring 3.4 or 5.4, silt will not enter the gap between the inner and outer pipes. After the work is completed, due to the silt adhering to the inner wall of the outer pipe 1, the inner pipe 2 will be retracted during the process. Sand removal is achieved through the rear sand removal ring 3.4 or the rear guide sand removal ring 5.6, and secondary sand removal through the rear sand removal ring opening 3.4.1 or the rear sand removal ring 5.4. Sand will not reach the space between the rear guide ring 3.3 or the rear guide ring 5.2 and the inner wall of the telescopic water pipe 1, thus preventing damage to the guide pair and sealing ring, improving the reliability of the entire device. At the same time, the front dust removal ring 4.1 prevents dust from entering the gap between the front guide ring 4.3 and the inner tube 2 of the telescopic water pipe, further improving the reliability of the device. If another solution of the front guide dust removal assembly 4 is adopted, the front guide sealing assembly 6, with the front inflatable sealing ring 6.2 acting as a seal, can further increase the reliability of the rear seal.

[0043] In actual use, if negative pressure water absorption is required, simply reverse the Y-shaped sealing ring 3.2 at the rear end.

[0044] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A retractable water supply and drainage pipe for emergency rescue, characterized in that: Includes the outer tube of the telescopic water guide pipe, the inner tube of the telescopic water guide pipe, the rear guide sealing and mud removal assembly, and the front guide dust removal assembly; The rear-end guide sealing and desanding assembly includes a rear-end guide piston, a rear-end mounting ring, a rear-end Y-shaped sealing ring, a rear-end guide ring, and a rear-end desanding ring. The rear-end guide sealing and desanding assembly is welded to the inner pipe of the telescopic water guide pipe through the support port of the rear-end guide piston; the rear-end mounting ring is connected to the rear-end guide piston; the rear-end Y-shaped sealing ring and the rear-end guide ring are respectively installed in the slots of the rear-end guide piston; the rear-end desanding ring is installed in the annular groove of the rear-end mounting ring or the rear-end guide piston. The front-end guiding dust removal assembly includes a front-end guiding support, a front-end retaining ring, a front-end guiding ring, and a front-end mounting ring. The front-end guiding dust removal assembly is welded to the outer pipe of the telescopic water guide pipe through the support port of the front-end guiding support. The front-end retaining ring is connected to the front-end guiding support by bolts. The front-end guiding ring is installed in the retaining groove of the front-end guiding support or in the retaining groove formed by the front-end guiding support and the intermediate retaining ring. The front-end mounting ring is installed in the annular groove of the front-end retaining ring or in the annular groove between the front-end retaining ring and the intermediate retaining ring. The rear mounting ring is either a rear sand removal ring support ring or a rear guide sand removal ring. When the rear mounting ring is a rear sand removal ring support ring, the rear sand removal ring support ring and the rear guide piston are connected by threads or welding. The rear sand removal ring is installed in the annular groove of the rear sand removal ring support ring, and the rear sand removal ring and the rear sand removal ring support ring are respectively provided with a rear sand removal ring opening and a support ring opening. When the rear mounting ring is a rear guide sand removal ring, the rear guide sand removal ring and the rear guide piston are connected by a snap key. The rear sand removal ring is installed in the annular groove of the rear guide piston. The rear guide piston is provided with a piston opening. Several outer pipe openings are opened at the outer pipe of the telescopic water guide pipe.

2. The telescopic water supply and drainage pipe for emergency rescue according to claim 1, characterized in that: When the front guide ring is installed in the slot of the front guide support and tightened by the front retaining ring; the front mounting ring is a front dust removal ring, which is installed in the annular groove of the front retaining ring.

3. The emergency rescue water supply and drainage telescopic pipe according to claim 2, characterized in that: The front-end guide dust removal assembly also includes an oil injection nozzle and a breather valve. The oil injection nozzle and the breather valve are respectively installed on the opening of the front-end guide support. The oil injection nozzle is used to inject lubricating oil between the front-end guide ring and the inner tube of the telescopic water guide pipe. The breather valve is used for air intake and exhaust during the telescopic process.

4. The telescopic water supply and drainage pipe for emergency rescue according to claim 1, characterized in that: When the front guide ring is installed in the groove formed by the front guide support and the middle retaining ring, the front retaining ring, the middle retaining ring and the front guide support are connected by bolts; the front mounting ring is a front inflatable sealing ring, which is installed in the annular groove between the front retaining ring and the middle retaining ring.

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