Pressure measuring connector of fire hydrant

Abstract

The utility model discloses a fire hydrant pressure measuring connector, and belongs to the field of fire fighting equipment. A fire hydrant pressure measuring connector comprises a hydrant head and further comprises a buffer plate fixedly connected to the inner wall of the hydrant head. The connecting pipe is fixedly connected to one side of the bolt head, a pressure measuring assembly is arranged on the connecting pipe, a water outlet pipe is fixedly connected to the side, away from the pressure measuring assembly, of the connecting pipe, an exhaust pipe is arranged at the bottom of the connecting pipe, the bottom of the water outlet pipe is communicated with the bolt head through a guide pipe, and the buffer plate is matched with the guide pipe; according to the utility model, on one hand, the impact of water flow can be reduced by using the buffer plate, the pressure in the bolt head is reduced, and the service life of the pressure gauge body is prolonged, and on the other hand, air in the bolt head can be visually discharged, so that a high or low pressure measurement result is prevented, and the measurement precision and reliability are improved; and the use safety is ensured.

Description

Technical Field

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

[0002] Fire hydrant pressure test joint, also known as fire hydrant system water test detection device, is used by fire detection departments to measure the pressure of fire hydrant systems in order to accurately judge the performance of fire hydrant systems. It is often used to detect the static water pressure and water outlet pressure of indoor fire hydrants, and is a special device for calibrating the water column of water guns.

[0003] After searching, the Chinese patent application number CN212026442U discloses a fire hydrant pressure measuring joint, which includes a pressure measuring joint body and a mounting bracket. The mounting bracket includes a first flat plate, a second flat plate, a first strip plate, a second strip plate, a rotating shaft, a pin and a connecting rod. The mounting bracket can further improve the fit tightness of the pressure measuring joint body and the fire hydrant joint when connected, thereby improving the measurement accuracy of the pressure measuring joint.

[0004] However, it was found during actual use that: although the installation bracket can further improve the tightness of the fit between the pressure measuring joint body and the fire hydrant joint when connected, when conducting water pressure tests on fire hydrants, different people open the valve at different speeds. When the valve is opened too quickly, a large amount of water will instantly flow into the pressure measuring water gun, causing the internal pressure of the pressure measuring water gun to increase sharply, which will have a great impact on the water pressure gauge, causing the water pressure gauge to lose accuracy. At the same time, excessive water pressure will also compress the gas inside the pressure measuring water gun, which will not only affect the accuracy of the pressure measurement data but also pose a safety hazard. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that a large water flow may cause a large impact on the water pressure gauge, and may also cause inaccurate pressure measurement data and potential safety hazards, and proposes a fire hydrant pressure measuring joint.

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

[0007] A fire hydrant pressure measuring joint comprises a bolt head, and also comprises: a buffer plate fixedly connected to the inner wall of the bolt head; a connecting pipe fixedly connected to one side of the bolt head, a pressure measuring assembly being arranged on the connecting pipe, wherein a water outlet pipe is fixedly connected to the side of the connecting pipe away from the pressure measuring assembly, an exhaust pipe is arranged at the bottom of the connecting pipe, the bottom of the water outlet pipe is connected to the bolt head through a guide pipe, and the buffer plate cooperates with the guide pipe.

[0008] In order to facilitate buffering of water flow, preferably, the cross-section of the buffer plate is semicircular, and the arc surface of the buffer plate fits with the inner wall of the bolt head.

[0009] In order to facilitate the measurement of the water pressure in the fire hydrant, preferably, the pressure measuring assembly includes a pressure gauge body, the pressure gauge body is fixedly connected to the connecting pipe, and the measuring end of the pressure gauge body extends to the inside of the connecting pipe.

[0010] In order to facilitate the control of the pipeline on the water outlet pipe, preferably, a first control valve is provided on the water outlet pipe.

[0011] In order to facilitate the control of the pipeline on the exhaust pipe, preferably, a second control valve is provided on the exhaust pipe.

[0012] In order to facilitate the limiting and fixing of the guide tube, preferably, the bottom of the bolt head is fixedly connected to a limiting plate, and the guide tube is fixedly connected to the limiting plate.

[0013] Compared with the prior art, the utility model provides a fire hydrant pressure measuring joint, which has the following beneficial effects:

[0014] 1. The fire hydrant pressure measuring joint can slow down the water flow speed through the buffer plate, thereby reducing the impact of the water flow, reducing the pressure inside the plug head, and extending the service life of the pressure gauge body;

[0015] 2. The fire hydrant pressure measuring joint can intuitively discharge the air inside the hydrant head by using a guide pipe in conjunction with an exhaust pipe, thereby preventing high or low pressure measurement results, improving measurement accuracy and reliability, and ensuring safety during use.

[0016] The parts not involved in the device are the same as the existing technology or can be implemented by the existing technology. On the one hand, the utility model can use the buffer plate to reduce the impact of water flow, reduce the pressure inside the plug head, and extend the service life of the pressure gauge body. On the other hand, it can also intuitively discharge the air inside the plug head, thereby preventing the occurrence of high or low pressure measurement results, improving the measurement accuracy and reliability, and ensuring safety during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural diagram of a fire hydrant pressure measuring joint proposed by the utility model;

[0018] Figure 2 This is a schematic structural diagram of a fire hydrant pressure measuring joint in cross section proposed by the utility model;

[0019] Figure 3 A schematic diagram of the structure of a fire hydrant pressure measuring joint plane proposed by the utility model Figure 1 ;

[0020] Figure 4 A schematic diagram of the structure of a fire hydrant pressure measuring joint plane proposed by the utility model Figure 2 .

[0021] In the figure: 1, bolt head; 2, connecting pipe; 201, pressure gauge body; 3, water outlet pipe; 301, first control valve; 4, buffer plate; 5, guide pipe; 501, limit plate; 6, exhaust pipe; 601, second control valve. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] Example:

[0025] Reference Figure 1-Figure 4 A fire hydrant pressure measuring joint comprises a bolt head 1, a card interface is arranged on the right side of the bolt head 1, which is used to be connected to a fire hydrant or other pipes that need to be measured, a connecting pipe 2 is also installed on the right side of the bolt head 1, a pressure gauge body 201 is also installed on the connecting pipe 2, and the measuring end of the pressure gauge body 201 extends to the inside of the connecting pipe 2, which is used to detect the dynamic or static water pressure of the fire hydrant. By detecting the water pressure, it can be ensured that the fire hydrant system can provide sufficient water pressure and flow when a fire occurs, so as to effectively extinguish the fire, which helps to protect the safety of personnel and property. At the same time, a water outlet pipe 3 is fixedly connected to the other side of the connecting pipe, and a first control valve 301 is also arranged on the water outlet pipe 3, which is used to control the passage of the water outlet pipe 3. When it is necessary to detect the dynamic water pressure in the fire hydrant, the water outlet pipe 3 can be opened.

[0026] In addition, refer to Figure 2 or Figure 4 A buffer plate 4 is also provided in the bolt head 1, and the cross-section of the buffer plate 4 is semicircular, and the arc surface of the buffer plate 4 fits with the inner wall of the bolt head 1. As shown in FIG. 2, four groups are provided, and the positions of the four groups of buffer plates 4 are staggered, and water can flow through them. When the bolt head 1 is connected to the pipeline to be tested, the pipeline passage to be tested is opened, and the buffer plate 4 can slow down the water flow speed, thereby reducing the impact of the water flow, reducing the pressure inside the bolt head 1, and extending the service life of the pressure gauge body 201.

[0027] It should be explained that, in order to better reduce the influence of the gas inside the plug head 1 on the measurement, an exhaust pipe 6 is arranged at the bottom of the connecting pipe 2, and a second control valve 601 is also installed on the exhaust pipe 6, and then the bottom of the water outlet pipe 3 is connected to the plug head 1 through the guide pipe 5, and the bottom of the plug head 1 is fixedly connected to the limit plate 501, and the guide pipe 5 can be fixedly connected to the limit plate 501 for limit fixing. When the gas inside the plug head 1 needs to be discharged, the first control valve 301 on the water outlet pipe 3 can be closed, and then the second control valve 601 on the exhaust pipe 6 can be opened, and then the right side of the plug head 1 can be closed. The side is connected to the fire hydrant or other pipes that need to be measured, and then the valve on the pipe is opened. At this time, the water flow will pass through the buffer plate 4 in the plug head 1, and the buffer plate 4 can buffer the water flow. At the same time, a part of the water flow will pass through the guide pipe 5 set in the plug head 1, and then the guide pipe 5 will transport the water flow to the outlet pipe 3, so that the air in the guide pipe 5 can be discharged, and the water pressure of the water flow transported from the outlet pipe 3 is always the same as the water pressure of the water flow entering the plug head 1. When the air in the guide pipe 5 is discharged, the water flow will also pass through the buffer plate 4, and then squeeze the gas into the exhaust pipe 6 to perform the emptying operation.

[0028] The advantage of this approach is that there is no need to precisely control the switch of the first control valve 301 on the water outlet pipe 3. For different staff members, it can prevent the control valve from opening too quickly and prevent a large amount of water from instantly flowing into the plug head 1. Then, after the exhaust pipe 6 discharges a uniform water flow, it is closed, so that the residual gas in the plug head 1 can be checked more intuitively, so that the gas in the plug head 1 can be emptied, and then static pressure measurement can be performed on the fire hydrant or other pipelines that need to be measured, thereby preventing high or low pressure measurement results, improving the measurement accuracy and reliability, and ensuring safety during use.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fire hydrant pressure measuring joint, comprising a hydrant head (1), characterized in that: Also includes: A buffer plate (4) fixedly connected to the inner wall of the bolt head (1); A connecting pipe (2) is fixedly connected to one side of the bolt head (1), and a pressure measuring assembly is arranged on the connecting pipe (2). The side of the connecting pipe (2) away from the pressure measuring assembly is fixedly connected to a water outlet pipe (3), an exhaust pipe (6) is provided at the bottom of the connecting pipe (2), the bottom of the water outlet pipe (3) is connected to the bolt head (1) via a guide pipe (5), and the buffer plate (4) cooperates with the guide pipe (5).

2. A fire hydrant pressure measuring joint according to claim 1, characterized in that: The cross section of the buffer plate (4) is semicircular, and the arcuate surface of the buffer plate (4) fits the inner wall of the bolt head (1).

3. A fire hydrant pressure measuring joint according to claim 1, characterized in that: The pressure measuring assembly comprises a pressure gauge body (201), the pressure gauge body (201) is fixedly connected to the connecting pipe (2), and the measuring end of the pressure gauge body (201) extends into the interior of the connecting pipe (2).

4. A fire hydrant pressure measuring joint according to claim 1, characterized in that: The water outlet pipe (3) is provided with a first control valve (301).

5. A fire hydrant pressure measuring joint according to claim 1, characterized in that: The exhaust pipe (6) is provided with a second control valve (601).

6. A fire hydrant pressure measuring joint according to claim 1, characterized in that: The bottom of the bolt head (1) is fixedly connected to a limiting plate (501), and the guide tube (5) is fixedly connected to the limiting plate (501).

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