Fire-fighting spraying system

Abstract

The utility model relates to the field of fire fighting systems, and discloses a fire fighting spraying system which comprises a spraying head, a water supply channel and a water passing channel, and the water passing channel is communicated between the spraying head and the water supply channel and used for conveying water in the water supply channel to the spraying head. And a mounting hole is formed in the side wall of the water passing channel at the tail end of the fire-fighting spraying system. The pressure sensor is arranged on the mounting hole and used for measuring the water pressure in the water passing channel at the tail end. The water passing channel is sleeved with the fixing piece, and a connecting pipe opposite to the mounting hole is formed on one side of the fixing piece. Wherein the pressure sensor is installed on the connecting pipe, under the condition that an existing spraying head structure is not disassembled or replaced, the pressure sensor is added, the pressure sensor is used for measuring the water pressure of the spraying head at the tail end of the fire-fighting spraying system, cost is greatly saved, and the pressure sensor is installed and replaced more easily through the fixing piece.

Description

Technical Field

[0001] The utility model relates to the field of fire protection systems, and more specifically, to a fire sprinkler system. Background Art

[0002] Fire sprinkler heads are an important part of the sprinkler system. They are usually installed on the walls or ceilings of indoor spaces and are connected to a pressurized water network pipeline to protect the covered area of the sprinkler system. Fire sprinkler heads mainly rely on the heat-sensitive elements inside them. When a fire occurs, these elements are affected by high temperatures, and the liquid inside starts to expand. When the temperature exceeds the set expansion temperature, the liquid will break the glass ball. At this time, the water in the water pipe will flow out to extinguish the fire. The sprinkler head continuously sprays water above the flame.

[0003] In the existing sprinkler system, when sensing the end pressure, a pressure sensor is often set inside the sprinkler head or an end water test device is set at the end. Among them, when a pressure sensor is set inside the sprinkler head, the structure of the entire sprinkler head needs to be remolded, and the cost is relatively high; when using an end water test device, its cost is relatively high, and the end water test device needs to be provided with an additional sprinkler head, and the installation is also relatively complex. Summary of the Utility Model

[0004] The utility model is made to solve the above technical problems, and its purpose is to provide a fire sprinkler system that can measure the water pressure at the end of the sprinkler system at a relatively low cost, avoid insufficient end water pressure and untimely water spraying in case of a fire, and the pressure sensor is also more convenient to install.

[0005] To achieve the above purpose, the utility model provides a fire sprinkler system, which includes a sprinkler head and a water supply channel, and further includes a water passing channel that is connected between the sprinkler head and the water supply channel. An installation hole is formed on the side wall of the water passing channel at the very end of the fire sprinkler system. A pressure sensor is arranged on the installation hole. It further includes a fixing member that is sleeved on the water passing channel, and a connecting pipe opposite to the installation hole is formed on one side. Among them, the pressure sensor is installed on the connecting pipe.

[0006] Preferably, the fixing member includes a first annular section and a second annular section. At least one end of the first annular section and the second annular section is provided with a clamping joint, and a fixing bolt passes through the clamping joint to fasten the first annular section and the second annular section. The connecting pipe protrudes from the outer wall of the second annular section.

[0007] Preferably, the inner wall of the connecting pipe is provided with internal threads, the pressure sensor includes an installation end and a sensing end, the installation end is provided with external threads, and the sensing end extends into the water passing channel.

[0008] Preferably, a positioning tube is convexly provided on the inner wall of the fixing member and penetrates through the mounting hole.

[0009] Preferably, a sealing ring is further included, which is sleeved on the positioning tube and abuts against the inner wall of the mounting hole.

[0010] Preferably, a mounting groove coaxial with the positioning tube is provided on the inner wall of the fixing member, and the sealing ring is accommodated in the mounting groove.

[0011] Preferably, the fixing member, the connecting pipe and the positioning tube are integrally formed.

[0012] Preferably, a central control device is further included, which is connected to the pressure sensor, receives the data of the pressure sensor, and controls the water supply channel to supply water to or stop supplying water to the sprinkler head.

[0013] Preferably, a plurality of sprinkler heads and water passing channels are provided, and the sprinkler heads and the water passing channels are uniformly or regularly connected to the water supply channel.

[0014] Preferably, the sprinkler head includes a sprinkler head body, a temperature-sensitive release mechanism, a sealing member and a splash plate. The sealing member is arranged at the entrance of the sprinkler head body and abuts against the temperature-sensitive release mechanism, and the sealing member and the splash plate are coaxially arranged.

[0015] According to the above description and practice, the fire sprinkler system of the present invention includes a sprinkler head, a water supply channel and a water passing channel. The water passing channel is connected between the sprinkler head and the water supply channel to realize transporting the water in the water supply channel to the sprinkler head. And an installation hole is formed on the side wall of the water passing channel at the end of the fire sprinkler system. A pressure sensor is arranged on the installation hole to measure the water pressure in the water passing channel at the end. A fixing member is further included, which is sleeved on the water passing channel, and a connecting pipe opposite to the installation hole is formed on one side. Among them, the pressure sensor is installed on the connecting pipe. Without dismantling or replacing the existing sprinkler head structure, the pressure sensor is added, and the pressure sensor is used to measure the water pressure at the sprinkler head at the end of the fire sprinkler system, which greatly saves the cost, and it is also easier to install and replace the pressure sensor by using the fixing member. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of the fire sprinkler system involved in an embodiment of the present application.

[0017] Figure 2 It is a schematic cross-sectional structure diagram of the sprinkler head involved in an embodiment of the present application.

[0018] Figure 3Schematic diagram of the water passage and fixing parts structure of the fire sprinkler system involved in an embodiment of the present application;

[0019] Figure 4 Exploded structure schematic diagram of the fixing parts of the fire sprinkler system involved in an embodiment of the present application.

[0020] The reference numerals in the figure are:

[0021] 1. Sprinkler head; 2. Water supply channel; 3. Pressure sensor; 10. Sprinkler head body;

[0022] 11. Heat-sensitive release mechanism; 12. Sealing member; 13. Water passage; 131. Installation hole

[0023] 14. Deflector; 20. Fixing part; 21. First annular section; 22. First annular section

[0024] 221. Inner wall; 223. Installation groove; 23. Card joint; 24. Connecting pipe; 25. Positioning pipe

[0025] 251. Sealing ring; 26. Fixing bolt Detailed implementation mode

[0026] Now, the exemplary embodiments will be described more comprehensively with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0027] In addition, the accompanying drawings are only schematic diagrams of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures denote the same or similar parts, and thus their repeated description will be omitted. It should be noted that in the present disclosure, the terms "including", "configured with", "provided with" are used to mean an open inclusion, and it means that there may be additional elements, components, etc. in addition to the listed elements / components / etc.; the terms "first", "second", etc. are only used as labels and are not limitations on the quantity or order of their objects; the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship 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 thus cannot be construed as a limitation on the present invention.

[0028] Unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] A fire sprinkler system is an automated fire extinguishing system that is mainly used inside buildings to prevent and control fires. The fire sprinkler system includes sprinkler heads 1, a water supply channel 2, and a water passing channel 13. The water supply channel 2 forms a uniform and dense water supply pipeline network (not shown in the figure) over the entire interior of the building. There are multiple sprinkler heads 1 and water passing channels 13, and the sprinkler heads 1 and water passing channels 13 are evenly or regularly connected to the water supply channel 2. Moreover, the sprinkler heads 1 are connected to the water supply pipeline network and are evenly distributed in various areas of the building to ensure that in the event of a fire, fire extinguishing can be carried out quickly and effectively. The water supply pipeline network has a fixed main water supply channel, and water flows out from the main water supply channel and is transmitted to each sprinkler head 1 through the water supply pipeline network.

[0030] The sprinkler head 1 farthest from the main water supply channel is called the end sprinkler head 1. At this position, since the sprinkler head 1 is the farthest from the water source, the amount of water transmitted by the water supply channel 2 may be insufficient. At this time, when a fire occurs at the end sprinkler head 1, the insufficient water volume cannot extinguish the fire quickly in time, and there are certain fire extinguishing blind spots in the fire sprinkler system inside the building. The present disclosure provides a fire sprinkler system that can measure the water pressure at the end of the sprinkler head system at a relatively low cost, avoiding insufficient water pressure at the end and untimely water spraying, which may delay the fire situation. Please refer to Figures 1 to 3 , the fire sprinkler system includes a pressure sensor 3. Among them, the water passing channel 13 is connected between the sprinkler head 1 and the water supply channel 2 for transporting the water in the water supply channel 2 to the sprinkler head 1. And an installation hole 131 is formed on the side wall of the water passing channel 13 at the very end of the fire sprinkler system. The pressure sensor 3 is arranged on the installation hole 131 for measuring the water pressure in the end water passing channel 13, realizing the measurement of the water pressure at the sprinkler head 1 at the end of the fire sprinkler system without dismantling or replacing the existing structure of the sprinkler head 1. Compared with the prior art in which an end water testing device with a sprinkler head 1 is provided at the end of the fire sprinkler system, a pressure sensor 3 is additionally provided on the end water passing channel 13, which greatly saves costs, and the installation and replacement of the pressure sensor 3 are also relatively easy.

[0031] In order to further simplify the installation difficulty of the pressure sensor 3, in some embodiments, please refer to Figure 2, the fire sprinkler system further includes a fixing member 20, which is sleeved on the water passage 13 and used to fix the pressure sensor 3 on the water passage 13. A connecting pipe 24 opposite to the mounting hole is formed on one side of the fixing member 20. The pressure sensor 3 is installed on the connecting pipe 24, ensuring that the pressure sensor 3 can be directly installed on the water passage 13 through the fixing member 20. On the one hand, while simplifying the installation difficulty, it also ensures that the pressure sensor 3 can always be fixed at the correct position on the water passage 13, facilitating the accurate measurement of the water pressure value in the water passage 13. On the other hand, the pressure sensor 3 is installed in the connecting pipe 24, so that the pressure sensor 3 will not be easily damaged under the action of external force, resulting in unnecessary cost loss, and further saving the maintenance cost.

[0032] It can be understood that in order to ensure that the pressure sensor 3 can always measure the water pressure at a specific height in the water passage 13, the mounting hole 131 is arranged along the radial direction of the water passage 13, and the connecting pipe 24 is coaxially installed with the mounting hole 131, avoiding the pressure sensor 3 from shaking under the action of water pressure or external force and affecting the accuracy of the water pressure measured by the pressure sensor 3.

[0033] In addition, when improving and adding a pressure sensor 3 to an existing designed pipeline, the common scheme of installing the pressure sensor 3 with a tee in the prior art often requires cutting off part of the existing designed pipeline to add the installation space of the tee, which is rather laborious and time-consuming. Moreover, when the water flow velocity in the tee is relatively fast, a turbulent flow problem will occur, and the error of the pressure value measured by the pressure sensor 3 is relatively large.

[0034] As an implementation manner, the fixing member 20 includes a first annular section 21 and a second annular section 22. At least one end of the first annular section 21 and the second annular section 22 is provided with a clamping joint 23, and the fixing bolt 26 passes through the clamping joint 23 to fasten the first annular section 21 and the second annular section 22. The fixing member 20 is separated into two parts and connected and fixed by the fixing bolt 26. On the one hand, it simplifies the installation difficulty of the fixing member 20. The pressure sensor 3 is located in the connecting rod 24, so that the pressure sensor 3 can be installed on the fixing member 20 at the pre-installation stage. On the other hand, the connecting pipe 24 protrudes from the outer wall of the second annular section 22, avoiding part of the structure of the pressure sensor 3 from being exposed outside the fixing member 20 and the water passage 13, and the pressure sensor 3 is not damaged unnecessarily under the action of external force. In addition, when a part of the fixing member 20 is damaged, it is not necessary to replace the entire fixing member 20, and only the damaged one of the first annular section 21 or the second annular section 22 needs to be replaced, reducing the maintenance cost.

[0035] Further, in order to stably fix the pressure sensor 3 in the fixing member 3 and the water passage 13, in some embodiments, the inner wall 221 of the connecting pipe 24 is provided with internal threads. The pressure sensor 3 includes a mounting end (not shown in the figure) and a sensing end (not shown in the figure). The mounting end is provided with external threads, which are screwed together with the internal threads of the inner wall 221. The sensing end extends into the water passage 13 to stably fix the pressure sensor 3, further avoiding the shaking of the pressure sensor 3 when the water speed is high, thereby affecting the accuracy of the measured value.

[0036] In some embodiments, a positioning pipe 25 penetrating through the mounting hole 131 is convexly provided on the inner wall of the fixing member 20. On the one hand, it is used to assist in positioning the fixing member 20 and the pressure sensor 3; on the other hand, it also provides some support for the pressure sensor 3 in the water passage 13 to avoid the shaking of the pressure sensor 3 when the amount of water passing through is large, thereby affecting the measurement accuracy of the pressure sensor 3.

[0037] Further, the fire sprinkler system further includes a sealing ring 251, which is sleeved on the positioning pipe 25 and abuts against the inner wall of the mounting hole 131 to achieve the sealing between the positioning pipe 25 and the mounting hole 131, avoiding the leakage of water flow between the positioning pipe 25 and the mounting hole 131, so that the pressure sensor 3 cannot accurately measure the water pressure value in the water passage 13, and then the water continuously transports from the water supply channel 2 to the end water passage 13 and the sprinkler head 1, resulting in the waste of water resources.

[0038] In order to prevent the sealing ring 251 from accidentally falling off when the fixing member 20 and the water passage 13 are disassembled and assembled, in some embodiments, an installation groove 223 coaxial with the positioning pipe 25 is provided on the inner wall of the fixing member 20, and the sealing ring 251 is accommodated in the installation groove 223. While avoiding the falling off of the sealing ring 251, it can also prevent unnecessary rotation between the fixing member 20 and the water passage 13, thereby ensuring the stability of the fixing member 20 and the pressure sensor 3 on the water passage 13.

[0039] In some embodiments, the fixing member 20, the connecting pipe 24 and the positioning pipe 25 are integrally formed, ensuring that there is no leakage between the fixing member 20, the connecting pipe 24 and the positioning pipe 25 when measuring the water pressure in the water passage 13, so as not to affect the stability of the water pressure value in the entire water passage 13.

[0040] It can be understood that the fire sprinkler system further includes a central control device (not shown in the figure), which is connected to the pressure sensor 3 and can receive the data of the pressure sensor 3 in real time. When the water pressure in the water passage 13 is shown to be low and water supply is required, it controls the water supply channel 2 to supply water to the sprinkler head 1, and stops the water supply when the water pressure in the water passage 13 is shown to be within the preset range.

[0041] In addition, the spray head 1 in the present utility model is a spray head using the thermal-sensitive principle, including but not limited to pendant nozzles, sidewall nozzles or concealed nozzles. Please refer to Figure 2 , the spray head 1 includes a spray head body 10, a temperature-sensitive release mechanism 11, a seal 12 and a deflector 14. The seal 12 is arranged at the inlet of the spray head body 10 and abuts against the temperature-sensitive release mechanism 11. The seal 12 and the deflector 14 are coaxially arranged. When a fire occurs, the temperature-sensitive release mechanism 11 in the spray head body 10 is affected by high temperature, and the liquid inside starts to expand. When the temperature exceeds the set expansion temperature, the liquid will squeeze and break the temperature-sensitive device in the temperature-sensitive release mechanism 11, and the seal 12 descends, so that the water in the water passage 13 flows out, and the water flow is sprayed around through the deflector 14, thereby achieving the purpose of extinguishing the fire. It ensures that the fire sprinkler system can respond quickly in the initial stage of the fire and effectively control the fire.

[0042] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A fire sprinkler system, comprising a plurality of sprinkler heads and a water supply channel, characterized in that, It further includes: A plurality of water passageways, which are connected between the sprinkler head and the water supply passageway. Mounting holes are formed on the side walls of the water passageways at the end of the fire sprinkler system. A pressure sensor, which is arranged on the mounting holes. A fixing member, which is sleeved on the water passageway, and a connecting pipe opposite to the mounting hole is formed on one side. Wherein, The pressure sensor is installed on the connecting pipe.

2. The fire sprinkler system according to claim 1, wherein, It further includes: The fixing member includes a first annular section and a second annular section. At least one end of the first annular section and the second annular section is provided with a clamping joint, and a fixing bolt passes through the clamping joint to fasten the first annular section and the second annular section. The connecting pipe protrudes from the outer wall of the second annular section.

3. The fire sprinkler system according to claim 1, characterized in that Internal threads are provided on the inner wall of the connecting pipe. The pressure sensor includes a mounting end and a sensing end. External threads are provided on the mounting end, and the sensing end extends into the water passageway.

4. The fire sprinkler system according to claim 1, characterized in that A positioning pipe penetrating through the mounting hole protrudes from the inner wall of the fixing member.

5. The fire sprinkler system according to claim 4, characterized in that It further includes a sealing ring, which is sleeved on the positioning pipe and abuts against the inner wall of the mounting hole.

6. The fire sprinkler system according to claim 5, characterized in that A mounting groove coaxial with the positioning pipe is provided on the inner wall of the fixing member, and the sealing ring is accommodated in the mounting groove.

7. The fire sprinkler system according to claim 4, characterized in that The fixing member, the connecting pipe and the positioning pipe are integrally formed.

8. The fire sprinkler system according to claim 1, characterized in that It further includes a central control device, which is connected to the pressure sensor, receives the data of the pressure sensor, and controls the water supply passageway to supply water to or stop supplying water to the sprinkler head.

9. The fire sprinkler system according to claim 1, characterized in that The sprinkler head and the water passageways are connected to the water supply passageway evenly or regularly.

10. The fire sprinkler system according to claim 1, characterized in that The sprinkler head includes a sprinkler head body, a temperature-sensitive release mechanism, a sealing member and a splash plate. The sealing member is arranged at the entrance of the sprinkler head body and abuts against the temperature-sensitive release mechanism. The sealing member and the splash plate are coaxially arranged.

Images