Fire-fighting water pressure test meter
By introducing a pressure relief device into the fire water pressure tester and using a gravity block to control the pressure relief channel, the problems of inaccurate testing and safety hazards during the installation of the fire water pressure tester are solved, and automatic pressure relief and accurate testing under high pressure are realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-03-27
AI Technical Summary
Existing fire water pressure test gauges are easily affected by the gas inside the fire hydrant during installation, leading to inaccurate test results. Furthermore, high-pressure water splashing poses safety hazards and damages the equipment.
A fire water pressure tester was designed, which includes an installation pipe, a test gauge body, and a pressure relief device. The pressure relief channel is controlled by a gravity block to automatically release excess gas or water and prevent excessive pressure.
This improved the accuracy of testing, avoided equipment damage and safety hazards, and ensured the safety and stability of operations.
Smart Images
Figure CN224039886U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of instruments and meters, in particular to a fire water pressure test table. BACKGROUND
[0002] The fire pressure gauge can detect the water supply pressure of the fire water source and find abnormal water supply pressure in time. When the pressure is lower than a certain level, the water supply of the fire fighting system will be reduced, which may cause insufficient water source for fire extinguishing at the fire scene, seriously affecting the fire extinguishing effect.
[0003] At present, the fire water pressure test table comprises a main pipe, a pressure gauge and a flange plate, the fire water pressure test table is installed on the hydrant opening through the flange plate, and the pressure gauge detects, however, the following problems exist in the actual use process:
[0004] When the fire water pressure test table is installed on the hydrant opening, the gas stored in the fire hydrant will first fill the test table, not the water under pressure, so that the accuracy of detection is affected, in addition, when the pressure of the stored gas causes the water pressure to be greater than the detection range of the test table, the test table will be damaged due to the excessive water pressure.
[0005] In addition, the high water pressure makes it difficult to take down the fire water pressure test table, and in the process of taking down, the water under pressure may splash on the surrounding elevator room, luxurious decoration and other water-averse articles, or even on the tester, causing unnecessary damage and safety hazards.
[0006] Therefore, a fire water pressure test table is needed, which can relieve the excessive water pressure in the hydrant, avoid the situation that the pressure of the stored gas causes the water pressure to be greater than the detection range of the test table, and the test table is damaged due to the excessive water pressure, and ensure the accuracy of detection. CONTENT OF THE INVENTION
[0007] The application provides a fire water pressure test table to solve the above technical problems.
[0008] The above technical purpose of the application is realized by the following technical scheme:
[0009] A fire water pressure test table, comprising an installation pipe, a test table body and a pressure relief device arranged on the installation pipe, the installation pipe has an installation part for being installed on a hydrant opening, when the installation pipe is installed on the hydrant opening, the test table body detects the pressure of the hydrant opening, the pressure relief device comprises a pressure relief shell and a gravity block, the pressure relief shell has a pressure relief channel communicating with the inside of the installation pipe, the gravity block can be operated to open the pressure relief channel to discharge excess gas or fire water or close to form a seal.
[0010] By adopting the technical scheme, the installation pipe is installed in the hydrant nozzle through the installation part, the test table body detects the pressure of the hydrant nozzle, when the pressure of the hydrant nozzle is too large, the excessive gas or fire water opens the pressure relief channel through the gravity block to be discharged, thereby preventing the equipment from being damaged due to the excessively high pressure, and the accuracy of detection is improved.
[0011] Optionally, the top of the gravity block is provided with a fixed shell, a sliding block is arranged in the fixed shell in a sliding fit in the vertical direction, a plurality of pressure relief holes one are formed in the sliding block in the circumferential direction, a pressure relief hole two is formed in the fixed shell in the circumferential direction, and a pressure relief hole three is formed in the pressure relief shell in the circumferential direction; when the sliding block is located at the top of the fixed shell, the pressure relief hole two is closed, and when the sliding block is operated to slide downward, the pressure relief hole two is opened.
[0012] By adopting the technical scheme, when the sliding block is located at the top of the fixed shell, the pressure relief hole two is closed by the sliding block, thereby preventing the gas or fire water from flowing out; when the sliding block slides downward, the pressure relief hole two is gradually opened, so that the pressure relief channel is in a connected state; when the internal pressure of the system is too high, the excessive gas or fire water can be discharged through the pressure relief channel, thereby reducing the pressure, protecting the safety of the equipment and personnel, and making the detection more accurate.
[0013] Optionally, the top of the pressure relief shell is provided with an abutment rod, a perforation is formed in the fixed shell for the abutment rod to penetrate into the interior of the fixed shell, and when the gravity block is located at the top of the pressure relief shell, the abutment rod drives the sliding hole to move downward to open the pressure relief hole two.
[0014] By adopting the technical scheme, the pressure relief channel is communicated by driving the sliding block to move downward through the abutment rod, thereby reducing the pressure; when the gravity block moves downward to separate the sliding block from the abutment rod after the pressure relief is completed, the pressure relief channel is automatically closed, thereby ensuring the automaticity and reliability of the pressure relief process, and the pressure relief can be automatically performed when the pressure of the hydrant nozzle is too high without manual intervention, and the pressure relief channel is automatically closed after the pressure relief is completed.
[0015] Optionally, the abutment rod and the sliding block are arranged in a staggered manner at the abutment part and the pressure relief hole one.
[0016] By adopting the technical scheme, the abutment rod and the sliding block are prevented from blocking the pressure relief hole one when they are in contact, thereby ensuring the stability of pressure relief, and the fixed shell and the sliding block are also prevented from generating turbulence, thereby improving the gas flow rate and the fire water flow rate and improving the pressure relief effect.
[0017] Optionally, the fixed shell is provided with a reset assembly for resetting the sliding block to the top of the fixed shell to close the pressure relief hole two.
[0018] Optionally, the reset assembly comprises a limiting block and a reset spring, the limiting block is slidingly matched with the inner side wall of the fixed shell, and the reset spring is used for applying an upward pre-tightening force to the limiting block to reset the sliding block to the top of the fixed shell.
[0019] By adopting the above technical scheme, the upward pre-tightening force of the reset spring is applied to the limiting block to reset the sliding block to the top of the fixed shell, the pressure relief hole is closed, the pressure relief channel is automatically closed, and stability is improved.
[0020] Optionally, when the gravity block is located at the top of the pressure relief shell, the pressure relief hole two is aligned with the pressure relief hole three.
[0021] Optionally, the pressure relief shell and the pressure relief hole four are arranged below the pressure relief hole three.
[0022] By adopting the above technical scheme, the pressure relief hole four can discharge the excess gas or fire-fighting water on the top of the sliding block, and the pressure relief efficiency is improved.
[0023] In summary, the application has the following technical effects: the mounting pipe is mounted in the fire hydrant nozzle through the mounting part, the test table body detects the pressure of the fire hydrant nozzle, when the pressure of the fire hydrant nozzle is too high, the excess gas or fire-fighting water opens the pressure relief channel through the gravity block, so as to be discharged, the equipment damage caused by the high pressure is prevented, and the detection accuracy is improved. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 is the external structure diagram of the application;
[0025] Figure 2 is the internal sectional view of the application.
[0026] Marked with 1, the mounting pipe; 11, the mounting part; 2, the test table body; 3, the pressure relief shell; 31, the pressure relief hole three; 32, the pressure relief hole four; 4, the gravity block; 5, the fixed shell; 51, the pressure relief hole two; 6, the sliding block; 61, the pressure relief hole one; 7, the abutting rod. DETAILED DESCRIPTION
[0027] The application will be further described in detail below with reference to the drawings.
[0028] The application discloses a fire-fighting water pressure test table.
[0029] Reference Figure 1 , Figure 2The application discloses a fire water pressure test gauge, which comprises a mounting pipe 1, a test gauge body 2 and a pressure relief device arranged on the mounting pipe 1. The mounting pipe 1 has a mounting portion 11 for being mounted on a fire hydrant nozzle. When the mounting pipe 1 is mounted on the fire hydrant nozzle, the test gauge body 2 detects the pressure of the fire hydrant nozzle. The pressure relief device comprises a pressure relief shell 3 and a gravity block 4. The pressure relief shell 3 has a pressure relief channel communicated with the inside of the mounting pipe 1. The gravity block 4 can be operated to open the pressure relief channel to discharge the excess gas or fire water or to close the pressure relief channel to form a seal. The mounting pipe 1 is mounted on the fire hydrant nozzle through the mounting portion 11. The test gauge body 2 detects the pressure of the fire hydrant nozzle. When the pressure of the fire hydrant nozzle is too high, the excess gas or fire water is discharged by opening the pressure relief channel through the gravity block 4, so that the equipment damage caused by the excessively high pressure is prevented, and the detection accuracy is improved.
[0030] In the embodiment, the mounting portion 11 is a flange plate. The mounting pipe 1 is mounted on the fire hydrant nozzle through the flange plate, so that the test gauge body 2 detects the pressure of the fire hydrant nozzle, including detecting the static pressure and the dynamic pressure. The mounting pipe 1 has a middle channel for being communicated with the fire hydrant nozzle, so that the gas or fire water of the fire hydrant nozzle flows in. The mounting pipe 1 can be provided with a valve for closing the middle channel, so as to facilitate the test gauge body 2 to detect the static pressure. The test gauge body 2 adopts an existing test gauge, and the existing test gauge is not described herein.
[0031] The pressure relief shell 3 is mounted on the mounting pipe 1. The inside of the pressure relief shell 3 is communicated with the middle channel. The weight of the gravity block 4 corresponds to a set pressure threshold. When the set pressure threshold is exceeded, the gas or pressure in the middle channel overcomes the gravity of the gravity block 4 and drives the gravity block 4 to move upwards, so as to open the pressure relief channel. The gravity block 4 can be made of steel, magnet or the like.
[0032] The top of the gravity block 4 is provided with a fixing shell 5. A sliding block 6 is slidingly arranged in the fixing shell 5 in the vertical direction. The sliding block 6 is provided with a plurality of pressure relief holes one 61 in the circumferential direction. The fixing shell 5 is provided with pressure relief holes two 51 in the circumferential direction. The pressure relief shell 3 is provided with pressure relief holes three 31 in the circumferential direction. When the sliding block 6 is located at the top of the fixing shell 5, the pressure relief holes two 51 are closed. When the sliding block 6 is operated to slide downwards, the pressure relief holes two 51 are opened.
[0033] When the sliding block 6 is located at the top of the fixing shell 5, the pressure relief holes two 51 are closed by the sliding block 6, so as to prevent the gas or fire water from flowing out. When the sliding block 6 slides downwards, the pressure relief holes two 51 are gradually opened, so that the pressure relief channel is in a communication state. When the internal pressure of the system is too high, the excess gas or fire water can be discharged through the pressure relief channel, so as to reduce the pressure, protect the safety of the equipment and personnel and make the detection more accurate.
[0034] The top of the pressure relief shell 3 is provided with an abutting rod 7, the fixed shell 5 is provided with a through hole for the abutting rod 7 to pass into the inside of the fixed shell 5, and when the gravity block 4 is located at the top of the pressure relief shell 3, the abutting rod 7 drives the sliding hole to move downwards to open the pressure relief hole two 51; when the pressure in the middle channel exceeds the preset pressure threshold, the jacking gravity block 4 makes the abutting rod 7 abut on the sliding hole through the through hole, drives the sliding block 6 to move downwards to open the pressure relief channel, thereby reducing the pressure; when the pressure relief is completed, the gravity block 4 moves downwards to separate the sliding block 6 from the abutting rod 7, and the pressure relief channel is automatically closed, thereby ensuring the automaticity and reliability of the pressure relief process, and the pressure relief channel can be automatically opened and closed without manual intervention when the pressure of the fire hydrant nozzle is too high.
[0035] The abutting rod 7 and the sliding block 6 abutting part are arranged in a staggered manner with the pressure relief hole one 61, so that the abutting rod 7 and the sliding block 6 do not block the pressure relief hole one 61 when they are in contact, the stability of pressure relief is ensured, and at the same time, turbulence between the fixed shell 5 and the sliding block 6 is avoided, the gas flow rate and the fire-fighting water flow rate are improved, and the pressure relief effect is improved.
[0036] The fixed shell 5 is provided with a reset assembly for resetting the sliding block 6 to the top of the fixed shell 5 to close the pressure relief hole two 51. In the embodiment, the reset assembly comprises a limiting block and a reset spring, the limiting block is slidingly fitted on the inner side wall of the fixed shell 5, and the reset spring is used for applying an upward pre-tightening force to the limiting block to reset the sliding block 6 to the top of the fixed shell 5. Specifically, the inner side wall of the fixed shell 5 is provided with a limiting hole, the limiting block is slidingly fitted in the limiting hole, and the reset spring is fixedly arranged between the side wall of the limiting hole and the limiting block. The reset spring applies an upward pre-tightening force to the limiting block to reset the sliding block 6 to the top of the fixed shell 5, and the pressure relief hole one 61 is closed, so that the pressure relief channel is automatically closed and the stability is improved.
[0037] When the gravity block 4 is located at the top of the pressure relief shell 3, the pressure relief hole two 51 is aligned with the pressure relief hole three 31, and the pressure relief channel is opened.
[0038] The pressure relief shell 3 is provided with a pressure relief hole four 32 below the pressure relief hole three 31, the pressure relief hole four 32 can discharge the excess gas or fire-fighting water on the top of the sliding block 6, and the pressure relief efficiency is improved. During the up-and-down movement of the gravity block 4, the gas or fire-fighting water remaining on the gravity block 4 can be discharged through the pressure relief hole four 32.
[0039] In the embodiment, the pressure relief hole one 61, the pressure relief hole two 51 and the pressure relief hole three 31 form the pressure relief channel.
[0040] The gravity block 4, the sliding block 6 and the abutting rod 7 realize the function of automatic pressure relief, can relieve the excessive water pressure in the fire hydrant, avoid the accumulated gas pressure from causing the water pressure to be greater than the detection range of the test table, and ensure the accuracy of detection.
[0041] The embodiments are only illustrative of the present application, and are not intended to limit the present application. Those skilled in the art can make modifications to the embodiments according to the present application without creative contribution, as long as the modifications are within the scope of the present application.
Claims
1. A fire water pressure test gauge, characterised in that: The utility model provides a pressure relief device for fire hydrant, including installation pipe (1), test table body (2) and set up in installation pipe (1), installation pipe (1) has the installation part (11) for installing in fire hydrant mouth, when installation pipe (1) installs in fire hydrant mouth, test table body (2) detects the pressure of fire hydrant mouth, the pressure relief device includes pressure relief shell (3) and gravity block (4), pressure relief shell (3) has the pressure relief channel with inside flow of installation pipe (1), gravity block (4) can be operated and open pressure relief channel and discharge excess gas or fire water or close and form the closure.
2. A fire water pressure test gauge according to claim 1, wherein: The top of gravity block (4) is provided with fixed shell (5), the fixed shell (5) is provided with sliding block (6) in the vertical direction sliding fit, the sliding block (6) is provided with a plurality of pressure relief holes one (61) along the circumferential direction, the fixed shell (5) is provided with pressure relief hole two (51) along the circumferential direction, the pressure relief shell (3) is provided with pressure relief hole three (31) along the circumferential direction, when the sliding block (6) is located at the top of fixed shell (5), pressure relief hole two (51) is closed, when the sliding block (6) is operated and slides down, pressure relief hole two (51) is opened.
3. A fire water pressure test gauge according to claim 2, wherein: The top of pressure relief shell (3) is provided with abutment rod (7), the fixed shell (5) is provided with perforation for abutment rod (7) to enter its inside, when gravity block (4) is located at the top of pressure relief shell (3), abutment rod (7) drives sliding hole to move down and opens pressure relief hole two (51).
4. A fire water pressure test gauge according to claim 3, wherein: The abutment rod (7) and the abutment part of sliding block (6) are misaligned with pressure relief hole one (61).
5. The fire water pressure test gauge of claim 3, wherein: The fixed shell (5) is provided with reset assembly for resetting sliding block (6) to the top of fixed shell (5) and closing pressure relief hole two (51).
6. A fire water pressure test gauge according to claim 5 wherein: The reset assembly includes limiting block and reset spring, the limiting block is slidingly fitted to the inner side wall of fixed shell (5), and the reset spring is used to apply upward pre-tightening force to the limiting block to reset sliding block (6) to the top of fixed shell (5).
7. The fire water pressure test gauge of claim 2, wherein: When gravity block (4) is located at the top of pressure relief shell (3), pressure relief hole two (51) is aligned with pressure relief hole three (31).
8. A fire water pressure test gauge according to claim 7, wherein: The pressure relief shell (3) is provided with pressure relief hole four (32) below pressure relief hole three (31).