Fire-fighting pipeline water flow indicator

Abstract

The utility model provides a fire-fighting pipeline water flow indicator, and relates to the technical field of fire-fighting pipeline water flow indicators, the fire-fighting pipeline water flow indicator comprises a water flow indicator, the upper top of the water flow indicator is fixedly connected with an inductor, and the inductor comprises a microswitch, a tower-type nut and a blade arranged in the water flow indicator. A pipeline is arranged on the side face of the water flow indicator, a pre-fixing device is arranged on the side face of the water flow indicator, the pre-fixing device comprises a protruding block fixedly connected to the side face of the water flow indicator, a clamping ring is fixedly connected to the surface of the protruding block, a circular groove is formed in the inner wall of the pipeline, and a rectangular strip is fixedly connected to the surface of the protruding block. A circular groove is formed in the inner wall of the pipeline, a rectangular groove is formed in the inner wall of the circular groove, one end of the pipeline is fixedly connected with a gasket, the gasket is a rubber ring, a groove is formed in the surface of the rectangular strip, and a ball is rotationally connected into the groove.

Description

Technical Field

[0001] This utility model relates to the technical field of fire pipeline water flow indicators, and in particular to a fire pipeline water flow indicator. Background Technology

[0002] Water flow indicators belong to the sight glass category of instrument valves and are suitable for use in industrial production pipelines in petroleum, chemical, chemical fiber, pharmaceutical, food, power plants, pumps, and other industries. Through the sight glass, they allow for real-time observation of the turbidity of liquids, gases, steam, and other media, as well as measurement of the media's flow velocity and reaction status. They are an indispensable pipeline accessory for ensuring normal production and product quality. Connection methods include threaded, flanged, and welded types. Water flow indicators can also be used in automatic sprinkler systems. They can be installed on the main water supply pipe or crossbar water pipes, providing an electrical signal indicating the water flow in a specific area. This signal can be sent to the electrical control box, but it is usually not used as a control switch to start the fire pump. Water flow indicators are commonly used for observing water flow inside fire pipelines.

[0003] The inventor discovered during daily use of water flow indicators that, when fixing the indicators, they are usually directly spliced ​​together with the pipe. This can lead to misalignment during splicing, resulting in water leakage and causing problems. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a fire pipeline water flow indicator.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a fire-fighting pipeline water flow indicator, comprising a water flow indicator, a sensor fixedly connected to the top of the water flow indicator, the sensor comprising a micro switch, a tower nut and a blade disposed inside the water flow indicator, a pipe disposed on the side of the water flow indicator, a pre-fixing device disposed on the side of the water flow indicator, the pre-fixing device comprising a protrusion fixedly connected to the side of the water flow indicator, a retaining ring fixedly connected to the surface of the protrusion, and a circular groove formed on the inner wall of the pipe.

[0006] The effect achieved by the above components is that, under the action of the retaining ring, the protrusion is locked inside the circular groove, thereby achieving the function of pre-fixation.

[0007] Preferably, a rectangular strip is fixedly connected to the surface of the protrusion, and a rectangular groove is formed on the inner wall of the circular groove.

[0008] The effect achieved by the above components is that, under the action of the rectangular bar and the rectangular groove, the protrusion will not rotate inside the circular groove, thus achieving the phenomenon of limiting the position.

[0009] Preferably, a washer, which is a rubber ring, is fixedly connected to one end of the pipe.

[0010] The effect achieved by the above components is that, under the action of the washer, the protrusion will not collide with the inner wall of the groove, thus avoiding damage to the protrusion.

[0011] Preferably, the surface of the rectangular strip is provided with a groove, and a ball bearing is rotatably connected inside the groove.

[0012] The aforementioned components achieve the following effects: Under the action of the ball bearings, the protrusion can move smoothly within the inner wall of the circular groove, thus facilitating installation. When it is necessary to fix the water flow indicator to the surface of the pipe, the protrusion is inserted into the circular groove, and the rectangular strip is inserted into the rectangular groove. Under the action of the retaining ring, the protrusion is secured within the circular groove, thus achieving pre-fixation. During insertion, the washer prevents the protrusion from colliding with the inner wall of the circular groove, avoiding damage to the protrusion. Under the action of the ball bearings, the protrusion can move smoothly within the inner wall of the circular groove, thus facilitating installation and achieving pre-fixation.

[0013] Preferably, the side of the water flow indicator is fixedly connected to a fixing device, the fixing device including a rectangular plate fixedly connected to the side of the pipe, a rectangular block fixedly connected to the side of the water flow indicator, a screw rotatably connected to the side of the rectangular plate, and a pressing plate threadedly connected to the surface of the screw.

[0014] The effect achieved by the above components is that, under the action of the screw, the extrusion plate presses the rectangular block to move in the position of the rectangular plate, thereby achieving the function of fixing the water flow indicator to the pipe.

[0015] Preferably, a round rod is fixedly connected to the side of the extrusion plate, and a through groove is formed on the surface of the rectangular block.

[0016] The effect achieved by the above components is that, under the action of the round rod, the extrusion plate will not shift, thus achieving the function of limiting the position.

[0017] Preferably, a pad, which is a rubber block, is fixedly connected to the side of the rectangular block.

[0018] The effect achieved by the above components is that, under the action of the pad, the rectangular block will not directly contact the rectangular plate, thus avoiding the phenomenon of rigid contact.

[0019] Preferably, a fixing rod is fixedly connected to the surface of the rectangular plate, and an extrusion plate is slidably connected to the surface of the fixing rod.

[0020] The effect achieved by the above components is as follows: under the action of the fixing rod, the extrusion plate will not rotate with the rotation of the screw. When it is necessary to fix the water flow indicator to the pipe, the round rod on the side of the extrusion plate is inserted into the through groove, and the screw is turned by hand, so that the extrusion plate presses the rectangular block to move towards the position of the rectangular plate. Under the action of the pad, the rectangular block will not directly contact the rectangular plate, avoiding the phenomenon of rigid contact. Under the action of the fixing rod, the extrusion plate will not rotate with the rotation of the screw, thus achieving the effect of fixation.

[0021] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0022] In this invention, a pre-fixing device is provided. When it is necessary to fix the water flow indicator to the surface of the pipe, the protrusion is inserted into the inside of the circular groove, and the rectangular strip is inserted into the inside of the rectangular groove. Under the action of the retaining ring, the protrusion is locked inside the circular groove, thereby achieving the pre-fixing function. During the insertion process, the action of the washer prevents the protrusion from colliding with the inner wall of the circular groove, avoiding damage to the protrusion. Under the action of the ball bearing, the protrusion can move smoothly on the inner wall of the circular groove, thereby facilitating installation and achieving the pre-fixing function. This solves the problem of misalignment of the water flow indicator during installation. Attached Figure Description

[0023] Figure 1 This utility model provides a three-dimensional structural diagram of a fire pipeline water flow indicator;

[0024] Figure 2 This utility model provides a schematic diagram of a pre-fixing device for a fire pipeline water flow indicator;

[0025] Figure 3 This utility model provides a schematic diagram of a fixing device for a fire pipeline water flow indicator.

[0026] Legend: 1. Water flow indicator; 2. Pre-fixing device; 21. Protrusion; 22. Snap ring; 23. Circular groove; 24. Washer; 25. Rectangular groove; 26. Rectangular strip; 27. Ball bearing; 3. Fixing device; 31. Rectangular plate; 32. Screw; 33. Fixing rod; 34. Rectangular block; 35. Extrusion plate; 36. Pad; 37. Round rod; 4. Pipe; 5. Sensor. Detailed Implementation

[0027] Example 1, as Figure 1-3As shown, a fire-fighting pipeline 4 water flow indicator 1 includes a water flow indicator 1, a sensor 5 fixedly connected to the top of the water flow indicator 1, the sensor 5 including a micro switch, a tower nut and a blade disposed inside the water flow indicator 1, a pipeline 4 disposed on the side of the water flow indicator 1, and a pre-fixing device 2 disposed on the side of the water flow indicator 1. When using the fire-fighting pipeline 4 water flow indicator 1, the water flow indicator 1 is fixed to the surface of the pipeline 4. The water flow indicator 1 senses the flow through a linkage mechanism based on mechanical induction and electrical signal conversion. The blade or diaphragm of the water flow indicator 1 is installed perpendicular to the water flow direction inside the pipeline 4. When the sprinkler system is started, such as when the sprinkler head is turned on, the water flow impacts the blade, causing it to deflect. This mechanical displacement is the basis for the trigger signal. At the same time, the blade needs to have high sensitivity, usually able to respond to water flow ≥37.5L / min (no triggering when below 15L / min). Water flow fluctuations may cause the blade to swing briefly, therefore a built-in delay circuit (adjustable from 2 to 90s) is used. The system only recognizes a valid water flow signal if the blades deflect continuously for more than a set time, thus avoiding false alarms. The blade deflection drives a microswitch via a linkage rod, activating the delay circuit. If the deflection does not reset after the delay, the electrical contacts close, outputting an alarm signal to the fire control center. (Example: In an automatic sprinkler system, the signal can locate the floor or fire compartment where the fire occurred.) When the water flow stops, the blades reset elastically, the contacts open, and the signal terminates. Failure to reset may result in a fault alarm, requiring manual troubleshooting.

[0028] Reference Figure 2The pre-fixing device 2 includes a protrusion 21 fixedly connected to the side of the water flow indicator 1. A retaining ring 22 is fixedly connected to the surface of the protrusion 21. A circular groove 23 is formed on the inner wall of the pipe 4. Under the action of the retaining ring 22, the protrusion 21 is locked inside the circular groove 23, thereby achieving the pre-fixing function. A rectangular strip 26 is fixedly connected to the surface of the protrusion 21. A rectangular groove 25 is formed on the inner wall of the circular groove 23. Under the action of the rectangular strip 26 and the rectangular groove 25, the protrusion 21 will not rotate inside the circular groove 23, thereby achieving the limiting phenomenon. A washer 24 is fixedly connected to one end of the pipe 4. The washer 24 is a rubber ring. Under the action of the washer 24, the protrusion 21 will not collide with the inner wall of the circular groove 23, avoiding damage to the protrusion 21. A groove is formed on the surface of the rectangular strip 26. The groove is internally connected to a rotating ball bearing 27. Under the action of the ball bearing 27, the protrusion 21 can move smoothly on the inner wall of the circular groove 23, thus facilitating installation. When it is necessary to fix the water flow indicator 1 to the surface of the pipe 4, the protrusion 21 is inserted into the inside of the circular groove 23, and the rectangular strip 26 is inserted into the inside of the rectangular groove 25. Under the action of the retaining ring 22, the protrusion 21 is locked inside the circular groove 23, thus achieving the pre-fixing function. During the insertion process, under the action of the washer 24, the protrusion 21 will not collide with the inner wall of the circular groove 23, avoiding damage to the protrusion 21. Under the action of the ball bearing 27, the protrusion 21 can move smoothly on the inner wall of the circular groove 23, thus facilitating installation and achieving the pre-fixing function.

[0029] Reference Figure 3A fixing device 3 is fixedly connected to the side of the water flow indicator 1. The fixing device 3 includes a rectangular plate 31 fixedly connected to the side of the pipe 4, a rectangular block 34 fixedly connected to the side of the water flow indicator 1, a screw 32 rotatably connected to the side of the rectangular plate 31, and a pressing plate 35 threadedly connected to the surface of the screw 32. Under the action of the screw 32, the pressing plate 35 presses the rectangular block 34 to move towards the position of the rectangular plate 31, thereby achieving the function of fixing the water flow indicator 1 to the pipe 4. A round rod 37 is fixedly connected to the side of the pressing plate 35. A through groove is opened on the surface of the rectangular block 34. Under the action of the round rod 37, the pressing plate 35 will not shift, thereby achieving the function of limiting the position. A pad 36, which is a rubber block, is fixedly connected to the side of the rectangular block 34. The rectangular block 34 is prevented from directly contacting the rectangular plate 31, thus avoiding rigid contact. A fixing rod 33 is fixedly connected to the surface of the rectangular plate 31, and a pressing plate 35 is slidably connected to the surface of the fixing rod 33. Under the action of the fixing rod 33, the pressing plate 35 will not rotate with the rotation of the screw 32. When it is necessary to fix the water flow indicator 1 to the pipe 4, the round rod 37 on the side of the pressing plate 35 is inserted into the through groove, and the screw 32 is turned by hand, so that the pressing plate 35 presses the rectangular block 34 to move towards the position of the rectangular plate 31. Under the action of the pad 36, the rectangular block 34 will not directly contact the rectangular plate 31, thus avoiding rigid contact. Under the action of the fixing rod 33, the pressing plate 35 will not rotate with the rotation of the screw 32, thus achieving the fixing effect.

[0030] Working principle: When using the water flow indicator 1 in fire sprinkler pipe 4, the indicator 1 is fixed to the surface of pipe 4. The indicator 1 senses the flow through a linkage mechanism based on mechanical induction and electrical signal conversion. The blades or diaphragms of the indicator 1 are installed perpendicular to the water flow direction within pipe 4. When the sprinkler system is activated, such as when the sprinkler head is turned on, the water flow impacts the blades, causing them to deflect. This mechanical displacement is the basis for the trigger signal. The blades must have high sensitivity, typically responding to water flow rates ≥37.5 L / min (not triggering below 15 L / min). Water flow fluctuations may cause brief blade oscillations; therefore, a built-in delay circuit (adjustable from 2 to 90 seconds) is incorporated. The system only determines a valid water flow signal when the blade deflection continues for more than the set time, avoiding false alarms. The blade deflection drives a microswitch via a linkage rod, activating the delay circuit. If the deflection fails to reset after the delay, the electrical contact closes, and an alarm signal is output to the fire control center. (Example: In an automatic sprinkler system, the signal can locate the floor or fire compartment where the fire occurred.) When the water flow stops, the blade resets elastically, the contact opens, and the signal terminates. Failure to reset may cause a fault alarm, requiring manual troubleshooting. When it is necessary to fix the water flow indicator 1 to the surface of the pipe 4, the protrusion 21 is inserted into the circular groove 23, and the rectangular strip 26 is inserted into the rectangular groove 25. Under the action of the retaining ring 22, the protrusion 21 is secured inside the circular groove 23, thus achieving pre-fixation. During insertion, the washer 24 prevents the protrusion 21 from colliding with the inner wall of the circular groove 23, avoiding damage to the protrusion 21. Under the action of the ball bearing 27, the protrusion 21 can smoothly move within the circular groove 23. The wall movement facilitates installation and achieves pre-fixation. When it is necessary to fix the water flow indicator 1 to the pipe 4, the round rod 37 on the side of the extrusion plate 35 is inserted into the through groove, and the screw 32 is turned by hand, so that the extrusion plate 35 presses the rectangular block 34 to move towards the position of the rectangular plate 31. Under the action of the pad 36, the rectangular block 34 will not directly contact the rectangular plate 31, avoiding rigid contact. Under the action of the fixing rod 33, the extrusion plate 35 will not rotate with the rotation of the screw 32, thus achieving the fixing effect.

Claims

1. A fire-fighting pipeline water flow indicator, comprising a water flow indicator (1), wherein a sensor (5) is fixedly connected to the top of the water flow indicator (1), the sensor (5) comprising a micro switch, a tower nut and a blade disposed inside the water flow indicator (1), characterized in that: The water flow indicator (1) has a pipe (4) on its side and a pre-fixing device (2) on its side. The pre-fixing device (2) includes a protrusion (21) fixedly connected to the side of the water flow indicator (1). A retaining ring (22) is fixedly connected to the surface of the protrusion (21). A circular groove (23) is opened on the inner wall of the pipe (4).

2. The fire pipeline water flow indicator according to claim 1, characterized in that: A rectangular strip (26) is fixedly connected to the surface of the protrusion (21), and a rectangular groove (25) is provided on the inner wall of the circular groove (23).

3. The fire pipeline water flow indicator according to claim 2, characterized in that: One end of the pipe (4) is fixedly connected to a washer (24), which is a rubber ring.

4. The fire pipeline water flow indicator according to claim 3, characterized in that: The rectangular bar (26) has a groove on its surface, and a ball bearing (27) is rotatably connected inside the groove.

5. The fire pipeline water flow indicator according to claim 4, characterized in that: The side of the water flow indicator (1) is fixedly connected to a fixing device (3), the fixing device (3) includes a rectangular plate (31) fixedly connected to the side of the pipe (4), a rectangular block (34) is fixedly connected to the side of the water flow indicator (1), a screw (32) is rotatably connected to the side of the rectangular plate (31), and a pressing plate (35) is threadedly connected to the surface of the screw (32).

6. The fire pipeline water flow indicator according to claim 5, characterized in that: A round rod (37) is fixedly connected to the side of the extrusion plate (35), and a through groove is opened on the surface of the rectangular block (34).

7. The fire pipeline water flow indicator according to claim 6, characterized in that: A pad (36) is fixedly connected to the side of the rectangular block (34), and the pad (36) is a rubber block.

8. The fire pipeline water flow indicator according to claim 7, characterized in that: A fixing rod (33) is fixedly connected to the surface of the rectangular plate (31), and an extrusion plate (35) is slidably connected to the surface of the fixing rod (33).

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