Fire hydrant water pressure detection device

By designing a fire hydrant water pressure detection device with components such as mobile platform, pressure splitting pipe, water sealing membrane, pressure measuring pipe, etc., the problem of difficulty in effectively detecting fire hydrant water pressure in the prior art is solved, and convenient and high-precision water pressure detection is achieved to ensure the normal operation of fire protection facilities.

CN222871233UActive Publication Date: 2025-05-16HENAN LONGCHUANG FIRE TECH CO LTD
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Patent Information

Application Number
CN202420770839.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-15
Publication Date
2025-05-16
Estimated Expiration
2034-04-15

AI Technical Summary

Technical Problem

It is difficult for the prior art to effectively conduct regular testing of fire hydrants' water pressure, which may cause insufficient water pressure, affecting the normal use of fire protection facilities.

Method used

A fire hydrant water pressure detection device is designed, including a mobile platform, a pressure divider, a water sealing membrane, a pressure measuring tube, a pressure measuring plate, a pressure indicator rod and a pressure measuring spring. The deformation of the water sealing film causes the pressure indicator rod to slide, indicating the pressure value, and facilitate detection of water pressure. At the same time, a micro gear set is set to increase the indication accuracy.

Benefits of technology

It realizes convenient regular inspection of fire hydrant water pressure, improves the accuracy and efficiency of inspection, and ensures the normal use of fire protection facilities.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of fire-fighting equipment detection, in particular to a fire hydrant water pressure detection device which comprises a pressure dividing pipe which is a T-shaped three-way pipe, a water sealing film is installed at one end of the pressure dividing pipe, a pressure measuring pipe is fixedly connected to the end, the water sealing film is located between the pressure dividing pipe and the pressure measuring pipe, and a pressure measuring piece is slidably installed in the pressure measuring pipe. The pressure measuring piece is fixedly connected with the water sealing film, the end, away from the water sealing film, of the pressure measuring piece is connected with a pressure indicating rod, the upper end of the pressure indicating rod penetrates through the pressure measuring pipe in a sliding mode, the pressure measuring pipe is connected with a pressure indicating ruler, and a pressure measuring spring is installed between the pressure indicating rod and the pressure measuring piece. The sliding position of the pressure indicating rod is changed through deformation of the water sealing film, so that the pressure indicating rod indicates the pressure value, and the water pressure of the fire hydrant can be regularly detected conveniently.
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Description

Technical Field

[0001] The present application relates to the technical field of fire-fighting facilities, and in particular to a fire hydrant water pressure detection device. Background Art

[0002] Fire hydrants are port devices used to provide firefighting media for fire hoses or fire trucks in the event of a fire. The commonly used firefighting media is generally water. In order to spray water to a higher and farther position and achieve better use effects, fire pumps are usually required to provide high-pressure water flow at a certain pressure for fire hydrants. In order to ensure the normal use of firefighting facilities, the water pressure of fire hydrants needs to be tested regularly. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the present application is to provide a detection device for detecting the water pressure of a fire hydrant.

[0004] The above application objectives of this application are achieved through the following technical solutions:

[0005] A fire hydrant water pressure detection device, characterized in that it comprises:

[0006] A mobile platform, wherein universal wheels are installed at the bottom of the mobile platform and a water storage tank is arranged at the top;

[0007] A pressure-dividing tube, the pressure-dividing tube is a T-shaped three-way tube, the first end and the second end of the pressure-dividing tube are both provided with an inner buckle-type tube thread interface, and the second end of the pressure-dividing tube is provided with a manual valve;

[0008] A water sealing membrane, the water sealing membrane is installed at the third end of the pressure dividing tube;

[0009] A pressure measuring tube, the pressure measuring tube is fixedly connected to the third end of the pressure dividing tube, and the water sealing membrane is located between the pressure dividing tube and the pressure measuring tube;

[0010] A pressure measuring piece, which is slidably installed in the pressure measuring tube and fixedly connected to the water sealing membrane;

[0011] A pressure indicating rod, the pressure indicating rod is connected to the pressure measuring plate, the upper end of the pressure indicating rod slidably passes through the pressure measuring tube, and the pressure measuring tube is connected to a pressure indicating scale;

[0012] A pressure measuring spring installed between the pressure indicating rod and the pressure measuring tube;

[0013] A connecting pipe, the second end of the pressure dividing pipe is connected to the connecting pipe, the connecting pipe is connected to the water storage tank, and the connecting pipe is a fire hose.

[0014] Optionally, the pressure measuring plate is fixedly connected to a gear rod, and a micro-indicator gear group is rotatably installed in the pressure measuring tube, the micro-indicator gear group includes two gears with different numbers of teeth that are coaxially fixedly connected, the gear with a smaller number of teeth is meshed with the gear rod, and the side surface of the pressure indicating rod is provided with teeth along a straight line and meshes with the gear with a larger number of teeth.

[0015] Optionally, the gear with a larger number of teeth in the micro-indicator gear set is meshed with a reversing gear, and the pressure-indicating rod is meshed with the reversing gear.

[0016] Optionally, one end of the pressure measuring spring abuts against the end of the pressure indicating rod, and the end of the pressure measuring spring away from the end of the pressure indicating rod is installed with a threaded knob, and the threaded knob is threadedly connected to the pressure measuring tube.

[0017] Optionally, one end of the pressure indicating rod passing through the pressure measuring tube is cylindrical, one end of the pressure indicating ruler away from the pressure measuring tube is a transparent round tube, and the pressure indicating ruler is inserted into the transparent round tube.

[0018] Optionally, a fastening nut is rotatably mounted on the first end of the pressure dividing tube, and the fastening nut is threadedly connected to a correction tube. After the correction tube and the fastening nut are tightened, the end of the correction tube is sealed and connected to the first end of the pressure dividing tube, and an inner-threaded tube interface is installed at one end of the correction tube away from the first end of the pressure dividing tube.

[0019] Optionally, one end of the connecting pipe connected to the water tank is connected to a fire spray gun.

[0020] Optionally, fixing rings are installed at both ends of the water sealing membrane, and the fixing rings are located between the pressure dividing tube and the pressure measuring tube.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] The deformation of the water sealing membrane causes the sliding position of the pressure rod to change, so that the pressure rod indicates the pressure value, which is convenient for regular detection of the water pressure of the fire hydrant;

[0023] By setting up a micro-indicator gear set, the gear rod drives the small gear, the large gear drives the pressure indicating rod, and the large and small gears are coaxial to form an acceleration gear set, so that the pressure indicating rod partially amplifies the displacement of the gear rod, reduces the deformation required for the sealing membrane to indicate pressure, and at the same time increases the indicating accuracy of the pressure indicating rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the voltage divider tube part of the embodiment of the present application;

[0025] Figure 2 It is a schematic diagram of the structure of the pressure measuring tube part of the embodiment of the present application.

[0026] Reference numerals: 1, voltage dividing tube; 11, fastening nut; 12, correction tube;

[0027] 2. Water sealing membrane; 21. Fixed ring; 22. Manual valve;

[0028] 4. Pressure measuring tube; 41. Pressure measuring plate; 411. Gear rod; 42. Pressure indicating rod; 421. Pressure indicating scale; 43. Pressure measuring spring; 431. Threaded knob; 44. Micro-indicator gear set; 441. Reversing gear. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings.

[0030] See also Figure 1 and Figure 2 , is a fire hydrant water pressure detection device disclosed in an embodiment of the present application, comprising a mobile platform and a pressure dividing pipe 1, a universal wheel is installed below the mobile platform, a water storage tank is arranged above, the pressure dividing pipe 1 is a T-shaped three-way pipe, the first end and the second end of the pressure dividing pipe 1 are both provided with an inner buckle pipe thread interface, the second end of the pressure dividing pipe 1 is provided with a manual valve 22, the third end of the pressure dividing pipe 1 is provided with a water sealing membrane 2, the third end of the pressure dividing pipe 1 is fixedly connected with a pressure measuring pipe 4, the water sealing membrane 2 is located at the pressure dividing pipe Between the tube 1 and the pressure measuring tube 4, a pressure measuring piece 41 is slidably installed in the pressure measuring tube 4, the pressure measuring piece 41 is fixedly connected to the water sealing membrane 2, the end of the pressure measuring piece 41 away from the water sealing membrane 2 is connected to a pressure indicating rod 42, the upper end of the pressure indicating rod 42 can slidably pass through the pressure measuring tube 4, the pressure measuring tube 4 is connected to a pressure indicating scale 421, a pressure measuring spring 43 is installed between the pressure indicating rod 42 and the pressure measuring piece 41, and a connecting pipe is connected between the second end of the pressure dividing tube 1 and the water tank, and the connecting pipe is a fire hose.

[0031] Specifically, the first end of the pressure dividing tube 1 is used to connect to the fire hydrant. The water flow in the fire hydrant impacts the water sealing membrane 2, causing the water sealing membrane 2 to deform and cause the pressure measuring piece 41 and the pressure indicating rod 42 to slide. The pressure indicating rod 42 drives the pressure measuring spring 43 to reach a balance with the water pressure. The pressure indicating rod 42 indicates the pressure value displayed on the scale on the pressure indicating scale 421. When measuring the flow pressure, open the manual valve 22 at the second end of the pressure dividing tube 1 to allow the water to flow into the water tank to form flowing water.

[0032] In this way, the deformation of the water sealing membrane 2 induces the sliding position change of the pressure indicating rod 42, so that the pressure indicating rod 42 indicates the pressure value, which is convenient for regular detection of the water pressure of the fire hydrant.

[0033] In some feasible ways, the mobile platform is in the shape of a plate, a water tank is placed on the mobile platform to store water for measuring flow pressure, universal wheels are provided to facilitate the movement of the mobile platform, and in order to better simulate the actual working state, a fire-fighting spray gun is connected to one end of the connecting pipe connected to the water tank, and the fire-fighting spray gun is located in the water tank;

[0034] The pressure-dividing tube 1 is provided with an inner buckle-type pipe thread interface, which is convenient for connection with the interfaces of most fire hydrants. The water-sealing membrane 2 is a sealing membrane made of elastic material, such as rubber material, etc. The water-sealing membrane 2 forms a seal through the fixed connection between the pressure-dividing tube 1 and the pressure measuring tube 4, so that when there is water pressure, the water pressure is applied to the water-sealing membrane 2 to cause the water-sealing membrane 2 to deform, and a sealing structure is formed by the water-sealing membrane 2 to reduce the possibility of high-pressure water leakage into the pressure measuring tube 4. In order to reduce the damage to the water-sealing membrane 2 caused by the pressure when the pressure-dividing tube 1 and the pressure measuring tube 4 are fixed, fixing rings 21 are installed at both ends of the water-sealing membrane 2, and the fixing ring 21 is located between the pressure-dividing tube 1 and the pressure measuring tube 4. The fixing ring 21 is made of the same material as the water-sealing membrane 2;

[0035] The pressure measuring tube 4 can be selected as a cylindrical tube, the pressure indicating rod 42 is fixedly connected to the pressure measuring plate 41, and the end of the pressure indicating rod 42 slides along the pressure indicating scale 421.

[0036] As a specific embodiment of a fire hydrant water pressure detection device provided in the application, the pressure measuring plate 41 is fixedly connected to a gear rod 411, and a micro-indicator gear set 44 is rotatably installed in the pressure measuring tube 4. The micro-indicator gear set 44 includes two coaxially fixedly connected gears with different numbers of teeth, the gear with a smaller number of teeth is meshed with the gear rod 411, and the side of the pressure indicating rod 42 is provided with teeth along a straight line and meshes with the gear with a larger number of teeth.

[0037] In general, by setting the micro-indicator gear set 44, the gear rod 411 drives the small gear, the large gear drives the pressure indicating rod 42, and the large and small gears are coaxial to form an acceleration gear set, so that the pressure indicating rod 42 partially amplifies the displacement of the gear rod 411, reduces the deformation required for the water sealing membrane 2 to indicate the pressure, and at the same time increases the indication accuracy of the pressure indicating rod 42.

[0038] Furthermore, the gear with a larger number of teeth of the micro-gear set 44 is meshed with the reversing gear 441 , and the pressure rod 42 is meshed with the reversing gear 441 .

[0039] It should be understood that by providing the reversing gear 441 , the displacement amplification degree of the gear rod 411 can be adjusted further by adjusting the gear ratio between the reversing gear 441 and the large gear, so as to facilitate more accurate display.

[0040] In some feasible embodiments, one end of the pressure measuring tube 4 is in the shape of a circular tube, and the circular tube section is connected to a square tube section. The pressure measuring plate 41 can be slidably installed on the circular tube section. The micro-gear group 44 and the reversing gear 441 are rotatably installed on the square tube section through an axis fixed to the square tube section. The square tube section is connected to another circular tube at one end away from the circular tube section. The pressure indicating rod 42 can be slidably arranged in the circular tube, and the side wall of the circular tube is connected to the square tube section by bolts. In order to facilitate the sliding of the gear rod 411 and the pressure indicating rod 42, a rectangular block that fits the gear rod 411 or the pressure indicating rod 42 is provided at one end of the gear rod 411 and the pressure indicating rod 42 away from the meshing gear to support the sliding of the gear rod 411 or the pressure indicating rod 42 branch line.

[0041] Furthermore, one end of the pressure measuring spring 43 abuts against the end of the pressure indicating rod 42 , and one end of the pressure measuring spring 43 away from the end of the pressure indicating rod 42 is installed with a threaded knob 431 , and the threaded knob 431 is threadedly connected to the pressure measuring tube 4 .

[0042] In combination with specific usage scenarios, by setting a threaded knob 431, the length of the pressure measuring spring 43 can be adjusted by adjusting the threaded knob 431, thereby changing its compression amount and further changing the detection pressure, so that the pressure measuring spring 43 can adapt to detection in a wider pressure range.

[0043] In some feasible embodiments, the pressure measuring spring 43 is installed at one end of the pressure indicating rod 42 away from the pressure indicating scale 421. After the threaded knob 431 is adjusted, when observing the test pressure, the change of the pressure measuring spring 43 caused by the adjustment of the threaded knob 431 should be added. That is, when the threaded knob 431 is tightened to the unit scale value, the value displayed on the pressure indicating rod 42 plus the unit scale is the actual measured pressure value.

[0044] Furthermore, one end of the pressure indicating rod 42 that passes through the pressure measuring tube 4 is cylindrical, and one end of the pressure indicating scale 421 that is away from the pressure measuring tube 4 is a transparent round tube, and the pressure indicating scale 421 is inserted into the transparent round tube.

[0045] It should be understood that by providing the cylindrical pressure indicating rod 42 section and the transparent round tube pressure indicating scale 421, it is convenient for the observer to observe the measured value at any angle.

[0046] As a specific embodiment of a fire hydrant water pressure detection device provided in the application, a fastening nut 11 is rotatably mounted on the first end of the pressure-dividing tube 1, and the fastening nut 11 is threadedly connected to a correction tube 12. After the correction tube 12 and the fastening nut 11 are tightened, the end of the correction tube 12 is sealed and connected to the first end of the pressure-dividing tube 1, and an inner-threaded pipe thread interface is installed at the end of the correction tube 12 away from the first end of the pressure-dividing tube 1.

[0047] It should be understood that the inward-facing pipe thread interface will be fixed at an angle after installation. Different fire hydrants have different installation angles, and the angles will also be different after the pressure-dividing tube 1 is installed, which may affect the reading of the pressure scale 421. After setting the correction tube 12, after the inward-facing pipe thread interface of the correction tube 12 is installed, the pressure-dividing tube 1 part is rotated to a suitable angle and then sealed by tightening the nut 11 to facilitate observation of the reading.

[0048] In some feasible embodiments, a retaining ring is provided on the outer side of the end face of the pressure dividing tube 1, and the fastening nut 11 is sleeved on the pressure dividing tube 1. One end has a smaller diameter than the retaining ring and is blocked by the retaining ring, and the other end crosses the retaining ring and is threadedly connected to the correction tube 12, so that the correction tube 12 is connected to the pressure dividing tube 1 to form a seal when the threads are tightened.

[0049] As a specific implementation of a fire hydrant water pressure detection device provided in the application,

[0050] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fire hydrant water pressure detection device, characterized in that: include: A mobile platform, wherein universal wheels are installed at the bottom of the mobile platform and a water storage tank is arranged at the top; A pressure dividing tube (1), the pressure dividing tube (1) being a T-shaped three-way tube, the first end and the second end of the pressure dividing tube (1) being both provided with an inner buckle type tube thread interface, and the second end of the pressure dividing tube (1) being provided with a manual valve (22); A water sealing membrane (2), the water sealing membrane (2) being installed at the third end of the pressure dividing tube (1); A pressure measuring tube (4), the pressure measuring tube (4) being fixedly connected to the third end of the pressure dividing tube (1), and the water sealing membrane (2) being located between the pressure dividing tube (1) and the pressure measuring tube (4); A pressure measuring piece (41), the pressure measuring piece (41) being slidably mounted in the pressure measuring tube (4) and fixedly connected to the water sealing membrane (2); A pressure indicating rod (42), the pressure indicating rod (42) being connected to the pressure measuring plate (41), the upper end of the pressure indicating rod (42) slidably passing through the pressure measuring tube (4), and the pressure measuring tube (4) being connected to a pressure indicating scale (421); A pressure measuring spring (43), the pressure measuring spring (43) being installed between the pressure indicating rod (42) and the pressure measuring tube (4); A connecting pipe, the second end of the pressure dividing pipe (1) is connected to the connecting pipe, the connecting pipe is connected to the water storage tank, and the connecting pipe is a fire hose.

2. A fire hydrant water pressure detection device according to claim 1, characterized in that: The pressure measuring plate (41) is fixedly connected to a gear rod (411), and a micro-indicator gear set (44) is rotatably installed in the pressure measuring tube (4). The micro-indicator gear set (44) includes two coaxially fixedly connected gears with different numbers of teeth, the gear with a smaller number of teeth meshing with the gear rod (411), and the side surface of the pressure indicating rod (42) is provided with teeth along a straight line and meshing with the gear with a larger number of teeth.

3. A fire hydrant water pressure detection device according to claim 2, characterized in that: The gear with a larger number of teeth of the micro-indicator gear set (44) is meshed with a reversing gear (441), and the pressure-indicator rod (42) is meshed with the reversing gear (441).

4. A fire hydrant water pressure detection device according to claim 2, characterized in that: One end of the pressure measuring spring (43) abuts against the end of the pressure indicating rod (42), and one end of the pressure measuring spring (43) away from the end of the pressure indicating rod (42) is provided with a threaded knob (431), and the threaded knob (431) is threadedly connected to the pressure measuring tube (4).

5. A fire hydrant water pressure detection device according to claim 4, characterized in that: One end of the pressure indicating rod (42) that passes through the pressure measuring tube (4) is cylindrical, and one end of the pressure indicating scale (421) that is away from the pressure measuring tube (4) is a transparent round tube, and the pressure indicating scale (421) is inserted into the transparent round tube.

6. A fire hydrant water pressure detection device according to claim 1, characterized in that: A fastening nut (11) is rotatably sleeved on the first end of the pressure dividing tube (1), and the fastening nut (11) is threadedly connected to a correction tube (12). After the correction tube (12) and the fastening nut (11) are tightened, the end of the correction tube (12) is sealedly connected to the first end of the pressure dividing tube (1), and an inner thread interface is installed at one end of the correction tube (12) away from the first end of the pressure dividing tube (1).

7. A fire hydrant water pressure detection device according to claim 1, characterized in that: One end of the connecting pipe connected to the water storage tank is connected to a fire-fighting spray gun (51).

8. A fire hydrant water pressure detection device according to claim 1, characterized in that: Fixed rings (21) are installed at both ends of the water sealing membrane (2), and the fixed rings (21) are located between the pressure dividing tube (1) and the pressure measuring tube (4).