Pressure measuring device for fire hydrant detection

Abstract

The utility model relates to the field of fire fighting equipment, in particular to a pressure measuring device for fire hydrant detection, which comprises a pressure measuring pipe. A tee joint is installed at one end of the pressure measuring pipe, and a water pressure gauge and a faucet are installed on the tee joint. The inner wall of one end, far away from the tee joint, of the piezometric tube is connected with a connecting tube, and the outer wall of one end, far away from the piezometric tube, of the connecting tube is provided with connecting threads; internal threads are arranged on the inner wall of one end, close to the connecting pipe, of the piezometric pipe, and external threads are arranged on the outer wall of one end, close to the piezometric pipe, of the connecting pipe; according to the fire hydrant pressure measuring device, the connecting pipe is fixed, the connecting pipe is prevented from rotating, and therefore the threaded connection position of the connecting pipe and the pressure measuring pipe is prevented from loosening, the overall sealing performance is improved, and the pressure measuring precision of a fire hydrant is improved.

Description

Technical Field

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

[0002] The spray water pressure of fire hydrants needs to be measured regularly. When the spray water pressure does not reach the specified value, it cannot output a stronger water flow, reducing its fire-fighting ability.

[0003] After searching, the China Patent Network disclosed a portable fire hydrant pressure measuring device with the publication number CN209500610U. Although it reduces the possibility of large measurement errors due to the large amount of air mixed in the measured water, thereby reducing the measurement error, the connector in this patent is threadedly connected to the steel pipe and lacks a corresponding positioning mechanism. When used for a long time, the connection between the connector and the steel pipe is prone to loosening, affecting the overall sealing, and further affecting the pressure measurement accuracy of the fire hydrant.

[0004] Therefore, a pressure measuring device for detecting fire hydrants is proposed. Utility Model Content

[0005] The utility model aims to provide a pressure measuring device for detecting fire hydrants.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A pressure measuring device for fire hydrant detection, comprising:

[0008] Pressure tube;

[0009] A tee is installed at one end of the pressure measuring tube, and a water pressure gauge and a faucet are installed on the tee respectively;

[0010] The inner wall of one end of the pressure measuring tube away from the tee is connected with a connecting tube, and the outer wall of one end of the connecting tube away from the pressure measuring tube is provided with a connecting thread;

[0011] An inner wall of one end of the pressure measuring tube close to the connecting tube is provided with an internal thread, and an outer wall of one end of the connecting tube close to the pressure measuring tube is provided with an external thread;

[0012] The connecting pipe is threadedly connected to the interior of the pressure measuring tube through external threads and internal threads;

[0013] An L-shaped bar is fixed to the outer wall of the pressure measuring tube, a first threaded hole is opened at one end of the L-shaped bar, and a threaded rod is threadedly connected to the inner thread of the first threaded hole;

[0014] A rotating shaft is fixed at one end of the threaded rod, and a fixing plate is fixed at the other end of the threaded rod.

[0015] Preferably, a sealing plate is installed on the outer wall of the connecting pipe.

[0016] Preferably, one end of the sealing plate abuts against one end of the pressure measuring tube close to the connecting tube.

[0017] Preferably, one end of the fixing plate abuts against the outer wall of the connecting pipe.

[0018] Preferably, a connecting ring is fixed to the outer wall of the connecting tube, a first connecting strip is fixed to the outer wall of the connecting ring, a movable groove is formed at one end of the first connecting strip away from the connecting ring, and a second connecting strip is movably connected in the movable groove;

[0019] The outer wall of the first connecting strip is provided with a second threaded hole and a third threaded hole which are connected to the movable groove;

[0020] The outer wall of the second connecting strip is provided with a fourth threaded hole matching with the second threaded hole and the third threaded hole.

[0021] Preferably, the third threaded hole and the fourth threaded hole are threadedly connected with fixing bolts.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] The utility model rotates the rotating shaft, and the rotating shaft drives the threaded rod to move in the first threaded hole. After the fixing plate at one end of the threaded rod abuts against the outer wall of the connecting pipe, the connecting pipe can be limited and fixed. Compared with the existing ones, the utility model fixes the connecting pipe to prevent the connecting pipe from rotating, thereby improving the loosening of the threaded connection between the connecting pipe and the pressure measuring pipe, improving the overall sealing, and thus improving the pressure measuring accuracy of the fire hydrant;

[0024] By rotating the rotating shaft in the opposite direction, the rotating shaft drives the threaded rod to move in the first threaded hole. After the fixing plate at one end of the threaded rod is no longer in contact with the outer wall of the connecting pipe, the fixing of the connecting pipe can be released. Then, the connecting pipe can be disassembled by rotating the connecting pipe in the opposite direction along the threaded connection direction of the internal thread and the external thread (since the connecting pipe is a consumable part, its connecting thread needs to be frequently connected to the fire hydrant, and the connecting thread will affect the overall sealing when worn). It is convenient for replacing and maintaining the connecting pipe, has high practicality, helps to improve the overall sealing, and further improves the pressure measurement accuracy of the fire hydrant.

[0025] The utility model can adjust the overall length of the first connecting bar and the second connecting bar by taking out the fixing bolt from the third threaded hole and the fourth threaded hole and then moving the position of the second connecting bar in the movable groove. Then, the fixing bolt is threadedly connected to the inside of the second threaded hole and the fourth threaded hole to fix the first connecting bar and the second connecting bar. Compared with the existing ones, the utility model can adjust the length of the first connecting bar and the second connecting bar, so that it is more convenient to rotate the connecting pipe, which is convenient for connecting the connecting pipe to the fire hydrant, can meet the use of workers with different strengths, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 It is a schematic diagram of the threaded rod and fixed plate structure in the utility model;

[0028] Figure 3 It is a schematic diagram of the internal thread structure in the utility model;

[0029] Figure 4 This is a schematic diagram of the connecting pipe structure in the utility model;

[0030] Figure 5 It is a schematic diagram of the cross-sectional structure of the first connecting strip and the second connecting strip in the utility model.

[0031] In the figure: 1. pressure measuring tube; 2. tee; 3. water pressure gauge; 4. faucet; 5. connecting pipe; 6. connecting thread; 7. internal thread; 8. external thread; 9. sealing plate; 10. L-shaped strip; 11. first threaded hole; 12. threaded rod; 13. rotating shaft; 14. fixing plate; 15. connecting ring; 16. first connecting strip; 17. movable groove; 18. second connecting strip; 19. second threaded hole; 20. third threaded hole; 21. fourth threaded hole; 22. fixing bolt. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] Embodiment 1:

[0035] See also Figure 1-4 , the utility model provides a technical solution: to achieve the above purpose, the utility model provides the following technical solution: a pressure measuring device for fire hydrant detection, comprising: a pressure measuring tube 1; a tee 2 is installed at one end of the pressure measuring tube 1, and a water pressure gauge 3 and a faucet 4 are installed on the tee 2 respectively; a connecting tube 5 is connected to the inner wall of the end of the pressure measuring tube 1 away from the tee 2, and a connecting thread 6 is arranged on the outer wall of the end of the connecting tube 5 away from the pressure measuring tube 1; an inner wall of the end of the pressure measuring tube 1 close to the connecting tube 5 is provided with an internal thread 7, and the outer wall of the end of the connecting tube 5 close to the pressure measuring tube 1 is provided with a An external thread 8 is provided; the connecting pipe 5 is threadedly connected to the inside of the pressure measuring tube 1 through the external thread 8 and the internal thread 7; an L-shaped bar 10 is fixed to the outer wall of the pressure measuring tube 1, and a first threaded hole 11 is opened at one end of the L-shaped bar 10, and a threaded rod 12 is connected to the internal thread 7 of the first threaded hole 11; a rotating shaft 13 is fixed to one end of the threaded rod 12, and a fixing plate 14 is fixed to the other end of the threaded rod 12, and a sealing plate 9 is installed on the outer wall of the connecting tube 5, one end of the sealing plate 9 abuts against the end of the pressure measuring tube 1 close to the connecting tube 5, and one end of the fixing plate 14 abuts against the outer wall of the connecting tube 5.

[0036] Specifically, the utility model rotates the rotating shaft 13, and the rotating shaft 13 drives the threaded rod 12 to move in the first threaded hole 11. After the fixing plate 14 at one end of the threaded rod 12 abuts against the outer wall of the connecting pipe 5, the connecting pipe 5 can be limited and fixed. Compared with the existing ones, the utility model fixes the connecting pipe 5 to prevent the connecting pipe 5 from rotating, thereby improving the loosening of the threaded connection between the connecting pipe 5 and the pressure measuring pipe 1, improving the overall sealing, and thus improving the pressure measurement accuracy of the fire hydrant;

[0037] By rotating the rotating shaft 13 in the opposite direction, the rotating shaft 13 drives the threaded rod 12 to move in the first threaded hole 11. After the fixing plate 14 at one end of the threaded rod 12 is no longer in contact with the outer wall of the connecting pipe 5, the fixing of the connecting pipe 5 can be released. Then, the connecting pipe 5 is rotated in the opposite direction along the threaded connection direction of the internal thread 7 and the external thread 8 to disassemble the connecting pipe 5 (since the connecting pipe 5 is a consumable part, its connecting thread 6 needs to be frequently connected to the fire hydrant, and the connecting thread 6 will affect the overall sealing when worn). It is convenient to replace and maintain the connecting pipe 5, has high practicality, helps to improve the overall sealing, and further improves the pressure measurement accuracy of the fire hydrant.

[0038] Embodiment 2:

[0039] See also Figure 1 , 4The utility model provides a technical solution: a pressure measuring device for detecting fire hydrants, wherein a connecting ring 15 is fixed to the outer wall of a connecting pipe 5, a first connecting strip 16 is fixed to the outer wall of the connecting ring 15, a movable groove 17 is provided at one end of the first connecting strip 16 away from the connecting ring 15, and a second connecting strip 18 is movably connected in the movable groove 17; a second threaded hole 19 and a third threaded hole 20 connected to the movable groove 17 are provided on the outer wall of the first connecting strip 16; a fourth threaded hole 21 matched with the second threaded hole 19 and the third threaded hole 20 is provided on the outer wall of the second connecting strip 18, and a fixing bolt 22 is connected to the inner threads 7 of the third threaded hole 20 and the fourth threaded hole 21.

[0040] Specifically, the utility model can adjust the overall length of the first connecting bar 16 and the second connecting bar 18 by removing the fixing bolt 22 from the third threaded hole 20 and the fourth threaded hole 21, and then moving the second connecting bar 18 in the movable groove 17. Then, the fixing bolt 22 is threadedly connected to the second threaded hole 19 and the fourth threaded hole 21 to fix the first connecting bar 16 and the second connecting bar 18. Compared with the existing ones, the utility model can adjust the length of the first connecting bar 16 and the second connecting bar 18, so that it can more conveniently rotate the connecting pipe 5, which is convenient for connecting the connecting pipe 5 to the fire hydrant, can meet the use of workers with different strengths, and is highly practical.

[0041] Working principle:

[0042] First, by rotating the rotating shaft 13, the rotating shaft 13 drives the threaded rod 12 to move in the first threaded hole 11. After the fixing plate 14 at one end of the threaded rod 12 abuts against the outer wall of the connecting pipe 5, the connecting pipe 5 can be limited and fixed. Compared with the existing ones, the utility model fixes the connecting pipe 5 to prevent the connecting pipe 5 from rotating, thereby improving the loosening of the threaded connection between the connecting pipe 5 and the pressure measuring pipe 1, improving the overall sealing, and thus improving the pressure measurement accuracy of the fire hydrant;

[0043] Secondly, by rotating the rotating shaft 13 in the opposite direction, the rotating shaft 13 drives the threaded rod 12 to move in the first threaded hole 11. After the fixing plate 14 at one end of the threaded rod 12 is no longer in contact with the outer wall of the connecting pipe 5, the fixing of the connecting pipe 5 can be released. Then, the connecting pipe 5 is rotated in the opposite direction along the threaded connection direction of the internal thread 7 and the external thread 8, and the connecting pipe 5 can be disassembled (because the connecting pipe 5 is a consumable part, its connecting thread 6 needs to be frequently connected to the fire hydrant, and the connecting thread 6 will affect the overall sealing when it is worn), which is convenient for replacing and maintaining the connecting pipe 5, has high practicality, helps to improve the overall sealing, and further improves the pressure measurement accuracy of the fire hydrant;

[0044] Finally, by removing the fixing bolt 22 from the third threaded hole 20 and the fourth threaded hole 21, and then moving the position of the second connecting bar 18 in the movable groove 17, the overall length of the first connecting bar 16 and the second connecting bar 18 can be adjusted, and then the fixing bolt 22 is threadedly connected to the second threaded hole 19 and the fourth threaded hole 21 to fix the first connecting bar 16 and the second connecting bar 18. Compared with the existing ones, the utility model can adjust the length of the first connecting bar 16 and the second connecting bar 18, so that it can more conveniently rotate the connecting pipe 5, which is convenient for connecting the connecting pipe 5 to the fire hydrant, can meet the use of workers with different strengths, and is highly practical.

[0045] In the description of the present invention, it should be understood that the terms "center", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0046] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A pressure measuring device for fire hydrant detection, characterized in that: include: Pressure measuring tube (1); A tee (2) is installed at one end of the pressure measuring tube (1), and a water pressure gauge (3) and a faucet (4) are respectively installed on the tee (2); The inner wall of one end of the pressure measuring tube (1) away from the tee (2) is connected to a connecting tube (5), and the outer wall of one end of the connecting tube (5) away from the pressure measuring tube (1) is provided with a connecting thread (6); An inner wall of one end of the pressure measuring tube (1) close to the connecting tube (5) is provided with an internal thread (7), and an outer wall of one end of the connecting tube (5) close to the pressure measuring tube (1) is provided with an external thread (8); The connecting pipe (5) is threadedly connected to the interior of the pressure measuring pipe (1) through an external thread (8) and an internal thread (7); An L-shaped bar (10) is fixed to the outer wall of the pressure measuring tube (1), a first threaded hole (11) is formed at one end of the L-shaped bar (10), and a threaded rod (12) is connected to the inner thread (7) of the first threaded hole (11); A rotating shaft (13) is fixed to one end of the threaded rod (12), and a fixing plate (14) is fixed to the other end of the threaded rod (12).

2. A pressure measuring device for fire hydrant detection according to claim 1, characterized in that: A sealing plate (9) is installed on the outer wall of the connecting pipe (5).

3. A pressure measuring device for fire hydrant detection according to claim 2, characterized in that: One end of the sealing plate (9) abuts against one end of the pressure measuring tube (1) close to the connecting tube (5).

4. A pressure measuring device for fire hydrant detection according to claim 1, characterized in that: One end of the fixing plate (14) abuts against the outer wall of the connecting pipe (5).

5. A pressure measuring device for fire hydrant detection according to claim 1, characterized in that: A connecting ring (15) is fixed on the outer wall of the connecting tube (5), a first connecting strip (16) is fixed on the outer wall of the connecting ring (15), a movable groove (17) is formed at one end of the first connecting strip (16) away from the connecting ring (15), and a second connecting strip (18) is movably connected in the movable groove (17); The outer wall of the first connecting strip (16) is provided with a second threaded hole (19) and a third threaded hole (20) which are connected to the movable groove (17); The outer wall of the second connecting strip (18) is provided with a fourth threaded hole (21) which matches the second threaded hole (19) and the third threaded hole (20).

6. A pressure measuring device for fire hydrant detection according to claim 5, characterized in that: The internal threads (7) of the third threaded hole (20) and the fourth threaded hole (21) are connected with fixing bolts (22).

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