Outlet water pressure measuring device of fire hydrant

Abstract

The utility model discloses a fire hydrant water outlet pressure measuring device which comprises a pressure measuring pipe with an opening in one end, a boss arranged at the bottom of the pressure measuring pipe, a magnetic attraction seat arranged on the boss and driven by a rotating mechanism arranged at the closed end of the pressure measuring pipe, a spring arranged between the bottom of the pressure measuring pipe and the boss, a magnetic attraction piece installed in the pressure measuring pipe in a sliding mode, and the magnetic attraction piece is connected with the spring. The magnetic attraction piece can be attracted and attached to the magnetic attraction base, and the magnetic attraction base is rotated through the rotating mechanism so that the magnetic attraction piece can be separated from the magnetic attraction base; a pressure gauge is arranged at the position, close to the open end, of the pressure measuring pipe, a pressure relief hole is formed in the pipe wall of the pressure measuring pipe, the outer portion of the pressure measuring pipe is rotationally connected with an outer sleeve, and an alignment hole matched with the pressure relief hole is formed in the inner wall of the outer sleeve. And the alignment hole and the pressure relief hole can be aligned by rotating the outer sleeve, so that water flow is introduced into the pressure relief cavity to realize pressure reduction treatment. The device can realize rapid measurement, is simple and efficient, releases high-pressure water under reduced pressure, avoids splashing when the device is disassembled, and is safe to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting equipment, in particular to a water outlet pressure measuring device for a fire hydrant. Background Art

[0002] To ensure the normal use of a fire hydrant, it is generally necessary to regularly measure the water outlet pressure to detect whether the water pressure of its jet reaches the requirement. If the water outlet pressure is too low, the fire-fighting ability will be reduced. In the prior art, the conventional pressure measuring head requires manual intervention and repeated operations during use, which takes a long time and is not suitable for situations where a large number of pressure measuring tasks need to be carried out, and the efficiency is too low. Moreover, due to the existence of high-pressure water after the test of this conventional pressure measuring head, there will be potential safety hazards when directly disassembling it, and it is easy to cause harm to personnel. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a water outlet pressure measuring device for a fire hydrant, aiming to solve the technical problems of long time consumption, low efficiency, potential safety hazards in disassembly and easy harm to personnel existing in the prior art.

[0004] The technical solution of the utility model is: a water outlet pressure measuring device for a fire hydrant, including a pressure measuring tube with one end open. A boss is provided at the bottom of the pressure measuring tube, and a magnetic attraction seat is provided on the boss. The magnetic attraction seat is driven to rotate by a rotating mechanism provided at the closed end of the pressure measuring tube. A spring is provided between the bottom of the pressure measuring tube and the boss. A magnetic attraction piece is slidably installed in the pressure measuring tube, and the magnetic attraction piece is connected to the spring. The magnetic attraction piece can attract and fit with the magnetic attraction seat. By rotating the magnetic attraction seat through the rotating mechanism, separation from the magnetic attraction piece can be achieved. A pressure gauge is provided near the open end of the pressure measuring tube. At least one circle of pressure relief holes is provided on the tube wall of the pressure measuring tube. An outer sleeve tube is rotatably connected to the outside of the pressure measuring tube. At least one circle of alignment holes matching the pressure relief holes is opened on the inner wall of the outer sleeve tube. A pressure relief cavity communicating with the alignment holes is provided inside the outer sleeve tube. By rotating the outer sleeve tube, the alignment holes can be aligned with the pressure relief holes to introduce water flow into the pressure relief cavity for pressure reduction treatment.

[0005] Further, in the utility model, the rotating mechanism includes a rotating part and a rotating rod connecting the rotating part and the magnetic attraction seat. The rotating rod is rotatably installed in the boss.

[0006] Further, in the utility model, the magnetic attraction seat and the magnetic attraction piece are circular, and magnetic members are respectively provided on the magnetic attraction seat and the magnetic attraction piece, and the magnetic members are arranged in the semi-circular regions corresponding to the magnetic attraction seat or the magnetic attraction piece.

[0007] Further, in the utility model, there are two circles of pressure relief holes, and the pressure relief holes are arranged between the limit positions when the pressure gauge attracts and fits with the magnetic attraction piece.

[0008] Further, in the utility model, one end of the outer sleeve tube close to the pressure gauge is a closed end, and the other end is provided with a drain hole communicating with the pressure relief cavity.

[0009] Furthermore, in the present utility model, both the pressure measuring tube and the outer sleeve tube are made of transparent materials.

[0010] Compared with the prior art, the present utility model has the following advantages: Since the device of the present utility model is made of transparent material, it is convenient to observe the use of the device and the water output. When in use, only the open end of the pressure measuring tube needs to be connected to the fire hydrant, and the fire hydrant valve is opened. High-pressure water enters the pressure measuring tube, pushing the magnetic attraction piece to attract and fit with the magnetic attraction seat. After detecting that there is water in the fire hydrant and the water output is stable, the reading of the pressure gauge can be measured quickly without manual intervention and repeated operation, which is simple and efficient; after the test is completed, the high-pressure water can be led out by rotating the outer sleeve tube and released after decompression, avoiding splashing when the device is disassembled from the fire hydrant, and the operation is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a structural schematic diagram of the present utility model;

[0012] Figure 2 is a schematic diagram of the use state of the present utility model;

[0013] Figure 3 is a structural schematic diagram of the pressure measuring tube described in the present utility model;

[0014] Figure 4 is a specific structural schematic diagram of the magnetic attraction seat described in the present utility model;

[0015] Figure 5 is a specific structural schematic diagram of the magnetic attraction piece described in the present utility model.

[0016] Wherein: 1, pressure measuring tube; 2, boss; 3, magnetic attraction seat; 4, rotating mechanism; 41, rotating part; 42, rotating rod; 5, spring; 6, magnetic attraction piece; 7, magnetic part; 8, pressure gauge; 9, pressure relief hole; 10, outer sleeve tube; 11, alignment hole; 12, pressure relief cavity; 13, drain hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following specifically describes the specific embodiments of the present utility model in conjunction with the drawings.

[0018] Embodiment:

[0019] The specific implementation of a fire hydrant water outlet pressure measuring device according to the present utility model is shown in conjunction with the attached drawings. It mainly includes a pressure measuring tube 1 with an open end. A boss 2 is provided at the bottom of the pressure measuring tube 1, and a magnetic attraction seat 3 is provided on the boss 2. The magnetic attraction seat 3 is driven to rotate by a rotating mechanism 4 provided at the closed end of the pressure measuring tube 1. The rotating mechanism 4 includes a rotating member 41 and a rotating rod 42 connecting the rotating member 41 and the magnetic attraction seat 3. The rotating rod 42 is rotatably installed in the boss 2. Manually rotating the rotating member 41 can drive the magnetic attraction seat 3 to rotate, for realizing the magnetic attraction and separation functions.

[0020] A spring 5 is provided between the bottom of the pressure measuring tube 1 and the boss 2. A magnetic attraction piece 6 is slidably installed in the pressure measuring tube 1, and the magnetic attraction piece 6 is connected to the spring 5. When the magnetic attraction piece 6 is subjected to the pressure of high-pressure water, it will be pushed to approach the magnetic attraction seat 3 and attract and fit with each other. In this embodiment, combined with Figure 4 , Figure 5 , the magnetic attraction seat 3 and the magnetic attraction piece 6 are circular in shape, and magnetic members 7 are respectively provided on the magnetic attraction seat 3 and the magnetic attraction piece 6. The magnetic members 7 are provided in the semi-circular areas corresponding to the magnetic attraction seat 3 or the magnetic attraction piece 6. When the magnetic attraction piece 6 attracts and fits with the magnetic attraction seat 3, the two magnetic members 7 attract each other face to face. At this time, it can be detected that there is water in the fire hydrant. When it is necessary to separate the magnetic attraction piece 6 from the magnetic attraction seat 3, rotate the rotating member 41. As the magnetic attraction seat 3 rotates, the magnetic member 7 on the magnetic attraction seat 3 gradually rotates to be separated from the other magnetic member 7, thereby releasing the magnetic attraction piece 6. Under the action of the spring 5, the magnetic attraction piece 6 resets.

[0021] A pressure gauge 8 is provided near the open end of the pressure measuring tube 1. After the water to be discharged enters the pressure measuring tube 1 and stabilizes, the reading is taken through the pressure gauge 8.

[0022] In this embodiment, two circles of pressure relief holes 9 are provided on the tube wall of the pressure measuring tube 1. The pressure relief holes 9 are provided between the limit positions when the pressure gauge 8 attracts and fits with the magnetic attraction piece 6, which is convenient for the smooth introduction of high-pressure water.

[0023] The outside of the pressure measuring tube 1 is rotatably connected with an outer sleeve tube 10. Two circles of alignment holes 11 matching with the pressure relief holes 9 are opened on the inner wall of the outer sleeve tube 10. A pressure relief cavity 12 communicating with the alignment holes 11 is provided inside the outer sleeve tube 10. During pressure measurement, the pressure relief holes 9 are in a closed state, that is, the alignment holes 11 are misaligned with the pressure relief holes 9, and the high-pressure water is limited in the pressure measuring tube 1. After the pressure measurement is completed, rotate the outer sleeve tube 10 to align the alignment holes 11 with the pressure relief holes 9, and the high-pressure water can be introduced into the pressure relief cavity 12 for pressure reduction treatment.

[0024] In this embodiment, one end of the outer sleeve tube 10 close to the pressure gauge 8 is a closed end, and the other end is provided with a drain hole 13 communicating with the pressure relief cavity 12. The drain hole 13 is convenient for discharging the excess water flow in the pressure relief cavity 12, and the position where the drain hole 13 is provided can avoid the water flow facing the operator.

[0025] In addition, both the piezometer tube 1 and the outer sleeve 10 are made of transparent materials, which is convenient for observing the use of the device and the water output.

[0026] When the utility model is specifically used, first connect the open end of the piezometer tube 1 to the fire hydrant, open the fire hydrant valve, high-pressure water enters the piezometer tube 1, and the magnetic attraction piece 6 is attracted and attached to the magnetic attraction seat 3. After detecting that there is water in the fire hydrant and waiting for the water output to be stable, read the value on the pressure gauge 8. After the test is completed, as Figure 2 shown, rotate the outer sleeve 10 to align the alignment hole 11 with the pressure relief hole 9. The high-pressure water enters the pressure relief cavity 12 to be decompressed and then is released through the drain hole 13 to avoid splashing when the device is disassembled from the fire hydrant. Both the piezometer tube 1 and the outer sleeve 10 are made of transparent materials, and the whole use process can be observed and operated simultaneously, which is simple and efficient.

[0027] Of course, the above embodiments are only used to illustrate the technical concept and features of the present utility model, and the purpose is to enable those who are familiar with this technology to understand the content of the present utility model and implement it accordingly, and it cannot be used to limit the protection scope of the present utility model. All modifications made according to the spirit and essence of the main technical solution of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A fire hydrant water outlet pressure measuring device, characterized in that: The pressure measuring tube (1) comprises a pressure measuring tube (1) with an opening at one end, a boss (2) is provided at the bottom of the pressure measuring tube (1), a magnetic seat (3) is provided on the boss (2), the magnetic seat (3) is driven to rotate by a rotating mechanism (4) provided at the closed end of the pressure measuring tube (1), a spring (5) is provided between the bottom of the pressure measuring tube (1) and the boss (2), a magnetic sheet (6) is slidably installed in the pressure measuring tube (1), the magnetic sheet (6) is connected to the spring (5), the magnetic sheet (6) can be attracted and fitted with the magnetic seat (3), and the magnetic seat (3) can be rotated by the rotating mechanism (4) to achieve the magnetic sheet (6) Separation; a pressure gauge (8) is provided near the open end of the pressure measuring tube (1); at least one circle of pressure relief holes (9) is provided on the tube wall of the pressure measuring tube (1); an outer sleeve (10) is rotatably connected to the outside of the pressure measuring tube (1); at least one circle of alignment holes (11) cooperating with the pressure relief holes (9) is provided on the inner wall of the outer sleeve (10); a pressure relief chamber (12) connected to the alignment holes (11) is provided inside the outer sleeve (10); the alignment holes (11) and the pressure relief holes (9) can be aligned by rotating the outer sleeve (10) so that water flow is introduced into the pressure relief chamber (12) to achieve pressure reduction.

2. A fire hydrant water outlet pressure measuring device according to claim 1, characterized in that: The rotating mechanism (4) comprises a rotating member (41) and a rotating rod (42) connecting the rotating member (41) and the magnetic seat (3); the rotating rod (42) is rotatably mounted in the boss (2).

3. A fire hydrant water outlet pressure measuring device according to claim 1, characterized in that: The magnetic seat (3) and the magnetic sheet (6) are circular in shape. The magnetic seat (3) and the magnetic sheet (6) are respectively provided with a magnetic component (7). The magnetic component (7) is arranged in a semicircular area corresponding to the magnetic seat (3) or the magnetic sheet (6).

4. A fire hydrant water outlet pressure measuring device according to claim 1, characterized in that: The pressure relief hole (9) has two circles, and the pressure relief hole (9) is arranged between the extreme positions when the pressure gauge (8) and the magnetic suction sheet (6) are attracted and attached.

5. A fire hydrant outlet pressure measuring device according to claim 1, characterized in that: One end of the outer sleeve (10) close to the pressure gauge (8) is a closed end, and the other end is provided with a drainage hole (13) connected to the pressure relief chamber (12).

6. A fire hydrant outlet pressure measuring device according to claim 1, characterized in that: The pressure measuring tube (1) and the outer sleeve (10) are both made of transparent materials.

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