Fire hydrant pressure detection device

Abstract

The utility model relates to the technical field of fire hydrants, and provides a fire hydrant pressure detection device which comprises a detachable pressure gauge, a fire hydrant installation pressure test pipeline, an embedded sleeve, a working sleeve, a first limiting ring, a second limiting ring, a movable ventilation plug, a guide rod and a compression spring. The working sleeve is fixedly installed on the inner side of the embedded sleeve, the first limiting ring and the second limiting ring are fixedly installed on the inner side of the working sleeve, the guide rod is fixedly installed between the first limiting ring and the second limiting ring, and the movable ventilation plug is arranged between the first limiting ring and the second limiting ring in a sliding mode through the guide rod. The upper surface of the movable ventilation plug is used in cooperation with the detection end of the detachable pressure gauge, and a compression spring arranged on the guide rod in a sleeving mode is arranged between the lower surface of the movable ventilation plug and the second limiting ring. The device is reasonable in structure and convenient to disassemble and assemble, the pressure gauge can be disassembled after measurement is completed, use is not affected, and the damage risk of the pressure gauge is reduced.

Description

Technical Field

[0001] This utility model relates to the field of fire hydrant technology, and in particular to a fire hydrant pressure detection device. Background Technology

[0002] Fire hydrants include outdoor fire hydrant systems, indoor fire hydrant systems, fire extinguisher systems, and some may also include automatic sprinkler systems, water cannon systems, gas extinguishing systems, fire detection systems, and water mist systems. A fire hydrant kit typically consists of a fire hose box, fire hose, nozzle, coupling, hydrant, and clamps. Fire hydrants primarily allow fire trucks to draw water from municipal water supply networks or outdoor fire water supply networks for firefighting, and can also be directly connected to hoses and nozzles for firefighting. Therefore, indoor and outdoor fire hydrant systems are also one of the important fire-fighting facilities for extinguishing fires.

[0003] For example, the fire hydrant pressure testing device disclosed in application number CN202321310527.5 includes a fire hydrant body, an installation cavity is provided on the fire hydrant body near the top, a protective box is provided in the installation cavity, a pressure gauge is detachably installed in the protective box through an installation component, an insulation component for antifreeze protection of the pressure gauge is provided in the protective box, and a protective component for shockproof protection of the pressure gauge is provided between the protective box and the inner wall of the installation cavity.

[0004] However, the pressure gauges of existing fire hydrant pressure testing equipment are not easy to disassemble and maintain. During use, the pressure gauges need to be left inside the fire hydrant for a long time, which increases the risk of damage to the fire hydrant pressure gauges. Utility Model Content

[0005] To address the problem that existing fire hydrant pressure testing equipment's pressure gauges are inconvenient to disassemble and maintain, and require prolonged placement inside the fire hydrant during use, increasing the risk of gauge damage, this invention provides a fire hydrant pressure testing device to solve this problem.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A fire hydrant pressure testing device includes: a detachable pressure gauge, a fire hydrant installation and testing pipeline, an inner nested tube, a working sleeve, a first limiting ring, a second limiting ring, a movable vent plug, a guide rod, and a compression spring. The inner nested tube is fixedly installed at the end of the fire hydrant installation and testing pipeline, the working sleeve is fixedly installed inside the inner nested tube, the first limiting ring and the second limiting ring are fixedly installed inside the working sleeve, the guide rod is fixedly installed between the first limiting ring and the second limiting ring, and the movable vent plug is slidably installed between the first limiting ring and the second limiting ring via the guide rod. The upper surface of the movable vent plug cooperates with the testing end of the detachable pressure gauge, and a compression spring fitted on the guide rod is provided between the lower surface of the movable vent plug and the second limiting ring.

[0008] Preferably, the movable vent plug includes: a first column and a second column, the first column and the second column are an integral structure, the first column is provided with a vent hole, the upper surface of the first column is used in conjunction with the detection end of the detachable pressure gauge, and the second column is slidably mounted on the guide rod.

[0009] Preferably, the outer diameter of the first column is smaller than the inner diameter of the first limiting ring, and the outer diameter of the second column is smaller than the minimum inner diameter of the working sleeve.

[0010] Preferably, a sealing ring is provided on the outer edge of the upper surface of the second column.

[0011] Preferably, the detachable pressure gauge is provided with mounting flanges and first mounting screws on both sides, and the detachable pressure gauge is detachably connected to the working sleeve through the mounting flanges and first mounting screws.

[0012] Preferably, the working sleeve is fixedly connected to the inner nested tube by a second mounting screw.

[0013] The advantages of this invention are as follows: By setting a detachable pressure gauge, the pressure gauge can be removed when the fire hydrant pressure is not being measured. After the pressure gauge is removed, the movable vent plug moves outward under the action of the compression spring and the pipeline pressure, pressing against the first limit ring to form a seal and prevent leakage. When measurement is required, the detachable pressure gauge is inserted into the working sleeve and fixed with screws. The detachable pressure gauge will press down the movable vent plug, and the gas in the pipeline will enter the detachable pressure gauge through the gap, allowing the detachable pressure gauge to measure the pipeline pressure. Attached Figure Description

[0014] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a partial enlarged view of the movable vent plug of this utility model;

[0017] Figure 3 This is a cross-sectional view of the movable vent plug of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the movable vent plug of this utility model;

[0019] Figure 5 This is a structural schematic diagram of the detachable pressure gauge and the installation part of the working sleeve of this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Removable pressure gauge; 2. Fire hydrant installation and pressure testing pipeline; 3. Inner nested pipe; 4. Working sleeve; 5. First limiting ring; 6. Second limiting ring; 7. Movable vent plug; 8. Guide rod; 9. Compression spring; 71. First column; 72. Second column; 711. Vent hole; 721. Sealing ring; 11. Mounting flange; 12. First mounting screw; 41. Second mounting screw. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example 1, combined with Figure 1 and Figure 2 Explanation:

[0026] A fire hydrant pressure testing device includes: a detachable pressure gauge 1, a fire hydrant installation and testing pipe 2, an inner nested pipe 3, a working sleeve 4, a first limiting ring 5, a second limiting ring 6, a movable vent plug 7, a guide rod 8, and a compression spring 9.

[0027] The inner nested tube 3 is fixedly installed at the end of the fire hydrant installation and pressure testing pipeline 2, and the working sleeve 4 is fixedly installed inside the inner nested tube 3. The inner nested tube 3 is used to fix the position of the working sleeve 4.

[0028] The first limiting ring 5 and the second limiting ring 6 are fixedly installed inside the working sleeve 4. The first limiting ring 5 and the second limiting ring 6 are connected to the working sleeve 4 by welding or integral molding.

[0029] The guide rod 8 is fixedly installed between the first limiting ring 5 and the second limiting ring 6. The movable vent plug 7 is slidably disposed between the first limiting ring 5 and the second limiting ring 6 via the guide rod 8. The movable vent plug 7 can move linearly along the axis of the guide rod 8.

[0030] The upper surface of the movable vent plug 7 is used in conjunction with the detection end of the removable pressure gauge 1. When the upper surface of the movable vent plug 7 is in contact with the removable pressure gauge 1, the removable pressure gauge 1 can measure the pipeline pressure by detecting the gas pressure flowing out from the movable vent plug 7.

[0031] A compression spring 9, fitted on the guide rod 8, is provided between the lower surface of the movable vent plug 7 and the second limiting ring 6. The movable vent plug 7 can be reset under the action of the compression spring 9, thereby preventing pipeline leakage after the detachable pressure gauge 1 is removed.

[0032] Example 2, based on Example 1, combined with... Figure 3 and Figure 4 Explanation:

[0033] The movable vent plug 7 includes a first column 71 and a second column 72, which are integral structures. The integral structure improves the structural strength of the movable vent plug 7.

[0034] The first column 71 is provided with a vent 711, and the upper surface of the first column 71 is used in conjunction with the detection end of the detachable pressure gauge 1. The second column 72 is slidably mounted on the guide rod 8.

[0035] The outer diameter of the first column 71 is smaller than the inner diameter of the first limiting ring 5, and the outer diameter of the second column 72 is smaller than the minimum inner diameter of the working sleeve 4. This arrangement facilitates gas flow.

[0036] A sealing ring 721 is provided on the outer edge of the upper surface of the second column 72. The sealing ring 721 can improve the sealing performance after the removable pressure gauge 1 is removed.

[0037] Example 3, based on Example 2, combined with Figure 5 Explanation:

[0038] The detachable pressure gauge 1 is provided with mounting flanges 11 and first mounting screws 12 on both sides. The detachable pressure gauge 1 is detachably connected to the working sleeve 4 through the mounting flanges 11 and the first mounting screws 12.

[0039] This design facilitates the disassembly and assembly of the detachable pressure gauge 1. The mounting flange 11 and the first mounting screw 12 facilitate the fixing of the detachable pressure gauge 1, thereby improving stability.

[0040] The working sleeve 4 is fixedly connected to the inner nested tube 3 by the second mounting screw 41. This arrangement allows the working sleeve 4 and the inner nested tube 3 to be fixedly connected in advance by using the second mounting screw 41.

[0041] The working principle of this utility model is as follows: When measurement is required, the detachable pressure gauge 1 is inserted into the working sleeve 4 and fixed with screws. The detachable pressure gauge 1 will press down the movable vent plug 7, and the gas in the pipeline will enter the detachable pressure gauge 1 through the gap. The detachable pressure gauge 1 measures the pipeline pressure. After the pressure is measured, the detachable pressure gauge 1 can be removed. After the detachable pressure gauge 1 is removed, the movable vent plug 7 moves outward under the action of the compression spring 9 and the pipeline pressure to abut against the lower surface of the first limit ring 5 to form a seal and prevent leakage. This utility model has a reasonable structure and is easy to disassemble and assemble. The pressure gauge can be removed after the measurement is completed without affecting the use and reducing the risk of pressure gauge damage.

[0042] For those skilled in the art, this utility model is not limited to the details of the exemplary embodiments described above, and can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model; therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any minor modifications, equivalent substitutions and improvements made to the above embodiments based on the technical essence of the present utility model should be included within the protection scope of the technical solution of the present utility model.

Claims

1. A fire hydrant pressure detection device, characterized in that, include: The components include a detachable pressure gauge (1), a fire hydrant installation and testing pipeline (2), an inner nested tube (3), a working sleeve (4), a first limiting ring (5), a second limiting ring (6), a movable vent plug (7), a guide rod (8), and a compression spring (9). The inner nested tube (3) is fixedly installed at the end of the fire hydrant installation and testing pipeline (2). The working sleeve (4) is fixedly installed inside the inner nested tube (3). The first limiting ring (5) and the second limiting ring (6) are fixedly installed inside the working sleeve (4). The guide rod (8) is fixedly installed between the first limiting ring (5) and the second limiting ring (6). The movable vent plug (7) is slidably installed between the first limiting ring (5) and the second limiting ring (6) via the guide rod (8). The upper surface of the movable vent plug (7) is used in conjunction with the detection end of the detachable pressure gauge (1). A compression spring (9) fitted on the guide rod (8) is provided between the lower surface of the movable vent plug (7) and the second limiting ring (6).

2. The fire hydrant pressure detection device according to claim 1, characterized in that, The movable vent plug (7) includes a first column (71) and a second column (72), the first column (71) and the second column (72) are an integral structure, the first column (71) is provided with a vent hole (711), the upper surface of the first column (71) is used in conjunction with the detection end of the detachable pressure gauge (1), and the second column (72) is slidably mounted on the guide rod (8).

3. The fire hydrant pressure detection device according to claim 2, characterized in that, The outer diameter of the first column (71) is smaller than the inner diameter of the first limiting ring (5), and the outer diameter of the second column (72) is smaller than the minimum inner diameter of the working sleeve (4).

4. The fire hydrant pressure detection device according to claim 3, characterized in that, A sealing ring (721) is provided on the outer edge of the upper surface of the second column (72).

5. A fire hydrant pressure detection device according to claim 1, characterized in that, The detachable pressure gauge (1) is provided with mounting flanges (11) and first mounting screws (12) on both sides. The detachable pressure gauge (1) is detachably connected to the working sleeve (4) through the mounting flanges (11) and the first mounting screws (12).

6. The fire hydrant pressure detection device according to claim 1, characterized in that, The working sleeve (4) is fixedly connected to the inner nested tube (3) by the second mounting screw (41).

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