Fire hydrant water pressure detection device

Abstract

The fire hydrant water pressure detection device comprises a fire-fighting lance and a fire hydrant connector, an inlet of the fire-fighting lance is fixedly connected with an inner threaded pipe, the left side and the right side of the inner threaded pipe are each provided with two vertically-distributed first positioning blocks and a limiting block, and the two first positioning blocks are each provided with a round through hole; cylindrical pins are arranged on the left side and the right side of the inner threaded pipe and perpendicularly penetrate through the round through holes in the two first positioning blocks, the limiting blocks are located beside the cylindrical pins, limiting columns perpendicular to the cylindrical pins are installed on the side faces of the cylindrical pins, and the limiting columns are located between the two first limiting blocks; according to the device, modular design is adopted, fire hydrant connectors of corresponding specifications can be rapidly replaced on a fire-fighting lance according to fire hydrants of different specifications, a cylindrical pin is arranged at the joint of the fire-fighting lance and the fire hydrant connectors, and the cylindrical pin is inserted into a round hole in a second positioning block; rotation of the joint of the fire-fighting lance and the fire hydrant connector can be limited.

Description

Technical Field

[0001] This utility model relates to the technical field of water pressure testing equipment, specifically a fire hydrant water pressure testing device. Background Technology

[0002] Fire hydrants are an indispensable and important component of urban fire protection systems. Their water pressure directly affects the fire extinguishing efficiency during a fire. Insufficient water pressure may prevent fire hydrants from supplying water normally, delaying the fire extinguishing opportunity, while excessive water pressure may damage fire-fighting equipment or even cause safety accidents. Therefore, regularly testing the water pressure of fire hydrants is a key step in ensuring the normal operation of the fire protection system.

[0003] Traditional fire hydrant water pressure testing devices have a simple structure, mainly consisting of a fire nozzle, a pressure gauge, and a valve. The outlet of the fire nozzle is a fire hydrant connector integrated with the nozzle. In use, the connector is connected to the outlet of the fire hydrant to be tested, and then the fire hydrant is opened, and the valve on the fire nozzle is closed or opened to measure the static water pressure and outlet water pressure of the fire hydrant. However, traditional fire hydrant water pressure testing devices can only perform water pressure testing on fire hydrants that are matched with their connectors, resulting in low versatility.

[0004] Therefore, we have designed a fire hydrant water pressure testing device. Utility Model Content

[0005] The purpose of this utility model is to provide a fire hydrant water pressure testing device to address the shortcomings of the existing technology and solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fire hydrant water pressure testing device, comprising a fire nozzle and a fire hydrant connector, wherein the inlet of the fire nozzle is fixedly connected to an internally threaded pipe, and two first positioning blocks and a limiting block are installed on both the left and right sides of the internally threaded pipe in a vertically distributed manner, and both first positioning blocks have through holes, and cylindrical pins are provided on both the left and right sides of the internally threaded pipe, the cylindrical pins passing vertically through the through holes on the two first positioning blocks, the limiting block being located next to the cylindrical pin, and a limiting post perpendicular to the cylindrical pin being installed on the side of the cylindrical pin, the limiting post being located between the two first limiting blocks;

[0007] The outlet of the fire hydrant connector is fixedly connected to a connecting pipe, and an external threaded pipe is fixedly connected to the connecting pipe. The external threaded pipe can be connected to the internal threaded pipe by thread. A second positioning block is installed on both the left and right sides of the connecting pipe. The top of the two second positioning blocks is opened with a round hole for inserting a cylindrical pin. A rubber block is installed at the bottom of the inner cavity of the round hole of the two second positioning blocks.

[0008] Preferably, a sealing ring is installed at the bottom edge of the internally threaded tube.

[0009] Preferably, the outlet of the fire hose is equipped with a valve, and a water pressure gauge is installed on the fire hose.

[0010] Preferably, the bottom of the limiting block is provided with an arc-shaped groove for limiting the limiting post.

[0011] Preferably, the rubber block is truncated cone-shaped.

[0012] Compared with the prior art, this utility model provides a fire hydrant water pressure detection device, which has the following beneficial effects:

[0013] This fire hydrant water pressure testing device adopts a modular design, allowing for quick replacement of the corresponding fire hydrant connector on the fire hose according to different specifications of fire hydrants. This greatly improves the device's versatility and applicability. By setting a cylindrical pin at the connection between the fire hose and the fire hydrant connector and inserting the cylindrical pin into the round hole on the second positioning block, the device can restrict the rotation at the connection between the fire hose and the fire hydrant connector, thereby preventing the connection between the fire hose and the fire hydrant connector from becoming loose during docking or disassembly. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is an enlarged view of section A of this utility model;

[0016] Figure 3 This is a schematic diagram of the disassembly of the fire hydrant connector of this utility model;

[0017] Figure 4 This is an enlarged view of section B of the present invention;

[0018] Figure 5 This is a schematic diagram of the internal structure of the second positioning block of this utility model.

[0019] Reference numerals in the attached diagram: 1. Fire nozzle; 2. Fire hydrant connector; 3. Internally threaded pipe; 4. First positioning block; 5. Limiting block; 6. Cylindrical pin; 7. Limiting post; 8. Connecting pipe; 9. Externally threaded pipe; 10. Second positioning block; 11. Rubber block; 12. Sealing ring; 13. Valve; 14. Water pressure gauge. Detailed Implementation

[0020] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-5 In this implementation plan: the fire hydrant water pressure testing device mainly consists of a fire nozzle 1 and a fire hydrant connector 2. The inlet end of the fire nozzle 1 is provided with an internally threaded pipe 3, and the connecting pipe 8 at the outlet end of the fire hydrant connector 2 is provided with an externally threaded pipe 9. The two can be connected by threads through the internally threaded pipe 3 and the externally threaded pipe 9. The fire nozzle 1 and the fire hydrant connector 2 adopt a modular design, which makes it convenient for users to replace the fire hydrant connector 2 of the corresponding specification on the fire nozzle 1 according to different specifications of fire hydrants, so that the fire hydrant water pressure testing device can be adapted to a variety of fire hydrants of different specifications.

[0022] Functions of valve 13 and water pressure gauge 14: Valve 13 is installed at the outlet of fire hose 1 to control the opening and closing of the fire hose outlet. Water pressure gauge 14 is installed on fire hose 1 to detect the static water pressure and outlet water pressure of the fire hydrant.

[0023] The function of the sealing ring: The bottom edge of the internally threaded pipe 3 is equipped with a sealing ring 12, which enhances the sealing of the connection between the fire nozzle 1 and the fire hydrant connector 2, and prevents leakage during the water pressure test, which would lead to inaccurate test results.

[0024] Structure of the internally threaded pipe 3: The internally threaded pipe 3 is fixed at the inlet of the fire hose 1. Two first positioning blocks 4 and one limiting block 5 are installed on each of its left and right sides. The first positioning blocks 4 have through holes. The cylindrical pin 6 passes through these through holes vertically and can move up and down and rotate within these through holes. The limiting post 7 is installed on the side of the cylindrical pin 6 and can move up and down and rotate together with the cylindrical pin 6. The limiting block 5 is located next to the cylindrical pin 6 and has an arc-shaped groove at its bottom for limiting the limiting post 7. When the limiting post 7 is in the arc-shaped groove, the arc-shaped groove can not only restrict the upward movement of the limiting post 7, but also restrict the rotation of the limiting post 7, thereby restricting the upward movement and rotation of the cylindrical pin 6.

[0025] Structure of connecting pipe 8: A second positioning block 10 is installed on each of the left and right sides of the connecting pipe 8. The top of the second positioning block 10 has a round hole for the insertion of a cylindrical pin 6. When the fire nozzle 1 is tightly connected to the fire hydrant connector 2, the round hole at the top of the second positioning block 10 is directly below the cylindrical pin 6. At this time, the cylindrical pin 6 can be inserted into the round hole, thereby restricting the rotation between the fire nozzle 1 and the fire hydrant connector 2. This prevents the connection between the fire nozzle 1 and the fire hydrant connector 2 from becoming loose during docking or disassembly with the fire hydrant, thus preventing water leakage. A rubber block 11 is installed at the bottom of the inner cavity of the round hole. The rubber block 11 is shaped like a frustum. The function of the rubber block 11 is to give the cylindrical pin 6 an upward thrust, so that the limiting post 7 is stuck in the arc-shaped groove at the bottom of the limiting block 5. After the cylindrical pin 6 is inserted into the round hole on the second positioning block 10, the cylindrical pin 6 is moved downward, so that the rubber block 11 is squeezed and deformed by the cylindrical pin 6. Then the limiting post 7 is rotated to the bottom of the arc-shaped groove at the bottom of the limiting block 5. Finally, the cylindrical pin 6 is released. At this time, the rubber block 11 rebounds and pushes the cylindrical pin 6 upward, so that the limiting post 7 is stuck in the arc-shaped groove at the bottom of the limiting block 5.

[0026] Connection and operation procedure: When connecting the device, first select the corresponding fire hydrant connector 2 according to the model of the fire hydrant outlet, connect the fire hydrant connector 2 to the fire gun 1 through the thread, then insert the cylindrical pins 6 on both sides of the internal thread pipe 3 into the round holes of the second positioning blocks 10 on both sides of the connecting pipe 8, squeeze the rubber block 11 through the cylindrical pins 6, then rotate the cylindrical pins 6 so that the limiting post 7 rotates to the bottom of the arc-shaped groove of the limiting block 5, and finally release the cylindrical pins 6 so that the limiting post 7 is inserted into the arc-shaped groove at the bottom of the limiting block 5;

[0027] When testing the water pressure of a fire hydrant, connect the fire hydrant connector 2 to the outlet of the fire hydrant, close the valve 13 on the fire nozzle 1, then open the fire hydrant and measure the static water pressure of the fire hydrant using the water pressure gauge 14. Then open the valve 13 and measure the outlet water pressure of the fire hydrant using the water pressure gauge 14. After the test is completed, close the fire hydrant first, and finally remove the device from the fire hydrant.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fire hydrant water pressure testing device, comprising a fire nozzle (1) and a fire hydrant connector (2), characterized in that: The fire hose nozzle (1) is fixedly connected to an internally threaded pipe (3). Two first positioning blocks (4) and a limiting block (5) are installed on the left and right sides of the internally threaded pipe (3). Two first positioning blocks (4) are opened with round through holes. Cylindrical pins (6) are provided on the left and right sides of the internally threaded pipe (3). The cylindrical pins (6) pass vertically through the round through holes on the two first positioning blocks (4). The limiting block (5) is located next to the cylindrical pin (6). A limiting post (7) perpendicular to the cylindrical pin (6) is installed on the side of the cylindrical pin (6). The limiting post (7) is located between the two first limiting blocks (5). The outlet of the fire hydrant connector (2) is fixedly connected to a connecting pipe (8), and an external threaded pipe (9) is fixedly connected to the connecting pipe (8). The external threaded pipe (9) can be connected to the internal threaded pipe (3) by thread. A second positioning block (10) is installed on both the left and right sides of the connecting pipe (8). The top of the two second positioning blocks (10) is opened with a round hole for inserting a cylindrical pin (6). A rubber block (11) is installed at the bottom of the inner cavity of the round hole of the two second positioning blocks (10).

2. The fire hydrant water pressure testing device according to claim 1, characterized in that: A sealing ring (12) is installed on the bottom edge of the internally threaded pipe (3).

3. The fire hydrant water pressure testing device according to claim 1, characterized in that: The outlet of the fire hose (1) is equipped with a valve (13), and a water pressure gauge (14) is installed on the fire hose (1).

4. The fire hydrant water pressure testing device according to claim 1, characterized in that: The bottom of the limiting block (5) is provided with an arc-shaped groove for limiting the limiting post (7).

5. The fire hydrant water pressure testing device according to claim 1, characterized in that: The rubber block (11) is truncated cone in shape.

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