A fire hydrant detection device for building fire protection

Abstract

This utility model discloses a fire hydrant testing device for building fire protection, belonging to the field of fire protection. It includes a hydrant body and a test cone, with a base plate at the bottom and an interface for water discharge on the hydrant body. A valve is provided at the outlet end of the test cone, and a connector assembly is provided at the mounting end of the test cone to accommodate interfaces of different sizes. A pressure gauge is installed on the test cone. When the connector assembly is connected to the interface, coaxiality calibration can be achieved through a centering component. The connector assembly includes an interface tube communicating with the test cone, and a sealing sleeve is provided on the outside of the interface tube. The interface tube is frustoconical in shape, and at least two annular cavities are formed within the sealing sleeve. This fire hydrant testing device for building fire protection improves interface adaptability and testing accuracy while reducing operational difficulty, adapting to diverse on-site testing scenarios.

Description

Technical Field

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

[0002] In building fire protection systems, fire hydrants are the core equipment for emergency water supply during fires. Their static pressure, dynamic pressure, and flow rate performance directly affect fire extinguishing effectiveness and the safety of personnel and property, therefore, regular testing and maintenance are necessary. A water testing device is the core tool for verifying the performance of fire hydrants. Its principle is to connect the connecting pipe to the fire hydrant interface, achieve a preliminary seal by tightening bolts, read the static pressure value when the valve is closed, and read the dynamic pressure value after opening the valve, directly obtaining the data through the pressure gauge pointer.

[0003] However, fire hydrant interfaces in buildings come in various diameters and specifications, and some older fire hydrant interfaces are prone to deformation. Traditional testing devices often use fixed-diameter connectors, requiring frequent replacement of adapters to complete the testing of fire hydrants of different specifications. This is cumbersome and inefficient. Even if some devices use a conical connection structure, the lack of a precise centering mechanism can easily lead to deviations between the center of the connecting cylinder and the interface, resulting in a loose fit. Utility Model Content

[0004] The purpose of this utility model is to solve the problem of poor interface adaptability of existing fire hydrant testing devices, which easily leads to interface pipe misalignment and poor fit, and to propose a fire hydrant testing device for building fire protection.

[0005] To achieve the above objectives, this utility model employs the following technology: a fire hydrant detection device for building fire protection, comprising: The nut body has a base plate at its bottom and an interface for water discharge. The test cone has a valve at its outlet end and a connector assembly at its mounting end that can mate with the connecting component to accommodate interfaces of different sizes. A pressure gauge is installed on the test cone. When the connector assembly is connected to the interface, coaxiality can be calibrated by a centering component.

[0006] As a further description of the above technical solution: the connector assembly includes an interface tube communicating with the test cone, and a sealing sleeve is provided on the outside of the interface tube.

[0007] As a further description of the above technical solution: the interface tube is shaped like a frustum, and at least two annular cavities are formed inside the sealing sleeve.

[0008] As a further description of the above technical solution: the centering component includes a base arranged coaxially with the interface tube, a top head is provided on the base through a mounting cylinder, and a spring is provided between the top head and the inner wall of the mounting cylinder.

[0009] As a further description of the above technical solution: the number of top heads is at least three and they are arranged at equal intervals around the axis of the base, and the top heads are also provided with limiting blocks arranged along their moving direction.

[0010] As a further description of the above technical solution: the connecting assembly includes a connecting seat disposed on the test cone, and a connecting screw threadedly connected to the connecting seat, one end of the connecting screw being provided with a clamping block capable of abutting against the interface.

[0011] As a further description of the above technical solution: an anti-slip pad is detachably installed on the side of the clamp block that contacts the interface by screws.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: The combination of the connecting components and the connector components can accommodate fire hydrant interfaces of various diameters and specifications, eliminating the need for frequent replacement of adapters, reducing operation steps, and improving testing efficiency. During the connection process of the connector assembly, the centering component ensures that the center of the connector assembly and the fire hydrant interface are accurately aligned, avoiding connection deviations. This results in a tighter fit between the interface pipe and the interface, effectively preventing water leakage and ensuring the accuracy of the test results. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall structure according to an embodiment of the present utility model is shown; Figure 2 A partial structural schematic diagram according to an embodiment of the present utility model is shown; Figure 3 A schematic diagram of the connector assembly provided according to an embodiment of the present invention is shown; Figure 4 A schematic diagram of the centering component provided according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of the structure of the connection component provided according to an embodiment of the present invention is shown.

[0014] Legend: 1. Bolt body; 2. Base plate; 3. Interface; 4. Test cone; 5. Valve; 6. Pressure gauge; 7. Connector assembly; 71. Interface pipe; 72. Sealing sleeve; 73. Cavity; 8. Centering assembly; 81. Base; 82. Mounting cylinder; 83. Top head; 84. Spring; 85. Limit block; 9. Connecting assembly; 91. Connecting seat; 92. Connecting screw; 93. Clamping block; 94. Anti-slip pad. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0016] Reference Figures 1-5 This embodiment provides a fire hydrant testing device for building fire protection, including a hydrant body 1 and a test cone 4. A base plate 2 is provided at the bottom of the hydrant body 1, and an interface 3 for water outlet is provided on the hydrant body 1. A valve 5 is provided at the outlet end of the test cone 4, and a connector assembly 7 that can cooperate with the connecting assembly 9 to adapt to interfaces 3 of different sizes is provided at the mounting end of the test cone 4. A pressure gauge 6 is provided on the test cone 4. The connecting assembly 9 includes a connecting seat 91 provided on the test cone 4, and a connecting screw 92 threadedly connected to the connecting seat 91. One end of the connecting screw 92 is provided with a clamping block 93 that can abut against the interface 3. An anti-slip pad 94 is detachably installed on the side of the clamping block 93 that contacts the interface 3 by screws.

[0017] In this embodiment, the hydrant body 1 is installed and fixed in the applicable location by the base plate 2 with bolt holes at the bottom. When performing static / dynamic pressure tests on the hydrant, the sealing cover at the interface 3 is removed, and then the connector assembly 7 of the test cone 4 is aligned with the interface 3 to make the connector assembly 7 of the test cone 4 and the interface 3 connected and sealed. Then, the connecting screw 92 with the clamping block 93 is aligned with the screw hole of the connecting seat 91, and the connecting screw 92 is tightened until the clamping block 93 is pressed against and the clamping head faces the axis of the interface 3. The test cone 4 is fixed by the tightened at least three clamping blocks 93 so that the installation end of the test cone 4 is tightly connected with the interface 3 of the hydrant body 1. During static pressure testing, valve 5 is closed, and the hydrant body 1 is in a static pressure-holding state. Pressure gauge 6 directly collects the static pressure data at interface 3. During dynamic pressure testing, valve 5 is opened, and the water in the hydrant body 1 flows through interface 3 into the test cone 4. Pressure gauge 6 collects the dynamic pressure data under the water flow state in real time. At the same time, the water flow rate can be adjusted through valve 5 to simulate the dynamic pressure changes under different fire extinguishing conditions. Then, the static pressure and dynamic pressure data collected by pressure gauge 6 are compared with the standard values ​​of fire protection specifications to determine whether the water supply pressure of the fire hydrant meets the standard, and thus evaluate its water supply capacity during fire extinguishing.

[0018] Since there are various diameter specifications for building fire hydrant interfaces, in order to enable the testing device to adapt to different specifications of interfaces 3, the connector assembly 7 includes an interface pipe 71 that is connected to the test cone 4. The interface pipe 71 is provided with a sealing sleeve 72. The interface pipe 71 is shaped like a frustum. At least two annular cavities 73 are opened inside the sealing sleeve 72.

[0019] The outer surface of the interface tube 71 is a continuous tapered surface, which can form a fitting surface with the inner wall of the interface 3 of different sizes. After being fixed with the connecting component 9, it can adapt to various specifications of interface 3 without replacing the connector. When the interface tube 71 is connected, the sealing sleeve 72 is used to seal the connection. The sealed cavity 73 gives the sealing sleeve 72 better elastic deformation ability, which can adapt to the slight size error and aging deformation of the interface 3, thereby improving the sealing effect.

[0020] In order to enable the interface pipe 71 to adapt to the deformation of some old fire hydrant interfaces 3, the coaxiality can be calibrated by the centering component 8 when the connector assembly 7 is connected to the interface 3. The centering component 8 includes a base 81 arranged coaxially with the interface pipe 71. A top head 83 is provided on the base 81 through the mounting cylinder 82. A spring 84 is provided between the top head 83 and the inner wall of the mounting cylinder 82.

[0021] The mandrel 83 is installed inside the mounting cylinder 82 via a spring 84. When the connector assembly 7 approaches the interface 3, the mandrel 83 first contacts the inner wall of the interface 3 and compresses the spring 84. The rebound force of the spring 84 keeps the mandrel 83 in close contact with the inner wall of the interface 3, forming a uniform radial clamping force. If there is a center deviation between the interface tube 71 and the interface 3, the mandrel 83 in different directions will receive different pressure feedback. The spring 84 adjusts the extension length of the mandrel 83 through differential telescoping, pushing the interface tube 71 to move automatically until the central axis of the interface tube 71 coincides with that of the interface 3, completing the coaxiality calibration. This makes the fit between the interface tube 71 and the interface 3 tighter, effectively preventing water leakage and ensuring the accuracy of the test results.

[0022] It should be noted that there are at least three ejector heads 83, which are arranged at equal intervals around the axis of the base 81. Each ejector head 83 is also provided with a limiting block 85 arranged along its moving direction. The multiple ejector heads 83 can evenly distribute the radial force and ensure overall coaxiality. The limiting block 85 can prevent the ejector head 83 from rotating or falling off, and ensure that the ejector pin only extends and retracts in the radial direction.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fire hydrant detection device for building fire protection, characterized in that, include: The nut body (1) has a bottom plate (2) at its bottom and an interface (3) for water outlet on the nut body (1). The test cone (4) has a valve (5) at its outlet end and a connector assembly (7) at its mounting end that can cooperate with the connecting assembly (9) to adapt to different sized interfaces (3). The test cone (4) has a pressure gauge (6) on it. When the connector assembly (7) is connected to the interface (3), the coaxiality can be calibrated by the centering assembly (8).

2. The fire hydrant detection device for building fire protection according to claim 1, characterized in that, The connector assembly (7) includes an interface tube (71) communicating with the test cone (4), and a sealing sleeve (72) is provided on the outside of the interface tube (71).

3. The fire hydrant detection device for building fire protection according to claim 2, characterized in that, The interface tube (71) is shaped like a frustum, and the sealing sleeve (72) has at least two annular cavities (73).

4. A fire hydrant detection device for building fire protection according to claim 3, characterized in that, The centering assembly (8) includes a base (81) arranged coaxially with the interface tube (71), a top head (83) is provided on the base (81) via a mounting cylinder (82), and a spring (84) is provided between the top head (83) and the inner wall of the mounting cylinder (82).

5. A fire hydrant detection device for building fire protection according to claim 4, characterized in that, The number of top heads (83) is at least three and they are arranged at equal intervals around the axis of the base (81). Each top head (83) is also provided with a limiting block (85) arranged along its moving direction.

6. A fire hydrant detection device for building fire protection according to claim 1, characterized in that, The connecting assembly (9) includes a connecting seat (91) disposed on the test cone (4) and a connecting screw (92) threadedly connected to the connecting seat (91), one end of the connecting screw (92) being provided with a clamp (93) capable of abutting against the interface (3).

7. A fire hydrant detection device for building fire protection according to claim 6, characterized in that, An anti-slip pad (94) is detachably installed on one side of the clamp (93) that contacts the interface (3) by screws.

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