Pressure regulating device for spraying system

Abstract

The utility model relates to the technical field of building fire protection, and discloses a pressure regulating device for a spraying system, which comprises a valve body and a pressure detection module used for detecting the internal pressure of the valve body, and an adjusting assembly used for adjusting the size of an output hole is arranged in the valve body. The adjusting assembly comprises a plurality of sets of master slices circumferentially distributed around the axis of the valve body, the multiple sets of master slices are in lap joint and overlapped with one another, and an adjustable hole is formed in the center of the master slices. The size of the hole is adjusted through swinging of the master slice, then the output hole diameter of the valve body is adjusted, the dynamic pressure of a pipeline is accurately adjusted, the requirement that the water supply pressure is not larger than 0.4 MPa is met, meanwhile, the device is used in cooperation with a tail end water testing device, it is guaranteed that the pressure of the most unfavorable point of a spraying pipe network is not smaller than 0.1 MPa, the flow and pressure of various water supply systems better meet the standard requirement, and the water supply efficiency is improved. And the safety of fire-fighting water supply is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to building fire protection technical field, concretely relates to a pressure regulating device for spraying system. BACKGROUND

[0002] Automatic sprinkler system is a kind of fixed automatic fire extinguishing facility, the nozzle in system usually has thermal element, when fire occurs, ambient temperature rises, reaches the action temperature of nozzle thermal element, thermal element breaks or melts and falls off, makes water flow through pipeline to nozzle, nozzle opens and sprays water, and triggers water flow alarm device, starts water supply facility such as fire pump to ensure continuous water supply to extinguish fire.

[0003] The existing automatic sprinkler system usually adopts pressure reducing orifice to realize pressure reduction of water distribution pipe of each layer, but there are the following two problems in the calculation and selection of ordinary pressure reducing orifice:

[0004] (1) the required pressure reduction values of spraying system at different water distribution pipe inlets are not the same, so the diameter of each pressure reducing orifice needs to be determined through complicated calculation, and the actual water pressure in the pipe network and the designed water pressure of branch water supply of each layer of spraying water supply pipe network have certain error, so the ordinary pressure reducing orifice cannot reduce the pressure required by the pipe network;

[0005] (2) the diameter of pressure reducing orifice is fixed and cannot be adjusted according to the actual pressure in the pipeline, and it is only suitable for fixed pressure reduction occasions, but the pressure reducing orifice needs to meet the requirements that the pressure at the water distribution pipe inlet is not greater than 0.4MPa and the working pressure at the most unfavorable point of pipe network is not less than 0.1MPa at the same time, and it cannot meet the working pressure requirements at the water distribution pipe inlet and the most unfavorable point at the same time.

[0006] Therefore, the utility model provides a pressure regulating device for spraying system to overcome the technical defects of the existing pressure reducing orifice. CONTENT OF UTILITY MODEL

[0007] The utility model aims at overcoming the defects in the prior art, and provides a pressure regulating device for spraying system, which can accurately adjust the pipeline pressure, so that the pressure of water distribution pipe meets the requirement that it is not greater than 0.4MPa, and simultaneously links with end water testing device to adjust the pressure of end water testing device to be not less than 0.1MPa, so that the flow and pressure of various water supply systems meet the requirements of specifications, and the safety of fire water supply is improved.

[0008] In order to achieve the above object, the utility model adopts the technical scheme, a kind of pressure regulating device for spray system, including valve body and the pressure detection module for detecting the pressure inside the valve body, the inside of the valve body is equipped with the adjusting assembly for adjusting the size of output aperture, the adjusting assembly includes multiple groups of the female piece that is circumferentially distributed around the axis of the valve body, multiple the female piece overlaps each other and forms adjustable hole at center.

[0009] Optionally, the female piece adopts arc structure.

[0010] Optionally, the pressure detection module adopts pressure sensor.

[0011] Optionally, the valve body is equipped with groove near two end edges.

[0012] Optionally, the valve body is equipped with multiple threaded holes on end face, and multiple threaded holes are circumferentially arrayed around the axis of the valve body.

[0013] Optionally, the axial length of the valve body is 190mm, outer diameter is 285mm, and inner diameter is 240mm.

[0014] Optionally, the thickness of the female piece is 5mm, and the inner diameter of the hole is less than 150mm.

[0015] Optionally, the valve body is also equipped with communication module, and the communication module is electrically connected with the pressure detection module.

[0016] Compared with prior art, the utility model has the advantages as follows:

[0017] (1) in the utility model, the size of hole is adjusted by the swing of female piece, then the output aperture size of valve body is adjusted, to accurately debug the dynamic pressure of pipeline, meet the water pressure not more than 0.4MPa, while being matched with terminal water testing device, ensure that the most unfavorable point pressure of spray pipe network is not less than 0.1MPa, so that the flow and pressure of various water supply systems are more in line with the requirements of specification, improve the safety of fire water supply;

[0018] (2) in the utility model, the communication module can realize real-time transmission of data, so as to monitor the working state of equipment at any time, and discover and solve the pressure problem in equipment and pipe network in time;

[0019] (3) in the utility model, the control center and the scene can display the pressure value before and after valve in real time, more intuitively understand whether the water pressure in spray pipe network meets the requirements;Valve pressure value can also be adjusted on site, and compared with the existing pressure reducing orifice plate, it is more accurate and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1It is the structure schematic view of the pressure regulating device for the spraying system in the embodiment of the utility model;

[0021] Figure 2 It is the side view structure schematic view of the pressure regulating device for the spraying system in the embodiment of the utility model;

[0022] Among them, 1, valve body;101, groove;102, threaded hole;2, pressure detection module;3, communication module;4, female piece;5, hole. Specific implementation

[0023] Now the utility model is further explained in detail in combination with the drawings and the embodiment, these drawings are all simplified schematic view, only with the schematic way the basic structure of the utility model is explained, therefore it only shows the related structure of the utility model.

[0024] Embodiment one, as shown in Figure 1 And Figure 2 A kind of pressure regulating device for spraying system, including valve body 1, pressure detection module 2, communication module 3 and adjusting assembly, wherein, the inside of valve body 1 has fluid passage, adjusting assembly is installed in the inside of valve body 1, for adjusting the size of valve body 1 output aperture, pressure detection module 2 and communication module 3 are all installed on the outside of valve body 1, and the former is used to detect the liquid pressure in fluid passage, the latter is electrically connected with pressure detection module 2, for transmitting the hydraulic data in fluid passage to the monitoring host computer or monitoring extension of fire control room in real time.

[0025] When pipe network water pressure is too large, aperture is reduced, local resistance loss of pressure reducing orifice plate is increased, and water outlet pressure is reduced;When pipe network water pressure is relatively normal, aperture is increased, local resistance loss of pressure reducing orifice plate is reduced, and water outlet pressure of water supply device is relatively increased.

[0026] Among them, pressure detection module 2 uses existing pressure sensor, which can detect liquid pressure before and after valve, i.e. the detection end of pressure sensor is distributed on the upstream and downstream of adjusting assembly. Communication module 3 also uses existing technology, which can realize real-time data transmission, so as to monitor the working state of equipment at any time, discover and solve the pressure problem in equipment and pipe network in time;So that the pressure values before and after valve can be displayed in real time in control center and on site, and water pressure in spraying pipe network can be more intuitively understood whether it meets the requirements;Valve rear pressure value can also be adjusted on site, and compared with existing pressure reducing orifice plate, it is more accurate and convenient.

[0027] The above, adjusting assembly includes multiple groups of female pieces 4 distributed in circle around the axis of valve body 1, multiple groups of female pieces 4 are overlapped with each other and form adjustable hole 5 at the center, female pieces 4 are tightly connected in embedded mode, and new pressure reducing orifice plate is formed by circular distribution combination.

[0028] When the pressure regulating device rotates, the female pieces 4 rotate around the axis of the circular plate as the center, so that the female pieces 4 can be arranged in an elastic manner and different sizes of the circular holes 5 are generated, and thus the water pressure can be flexibly adjusted by adjusting the size of the holes 5.

[0029] The female pieces 4 adopt an arc structure (i.e. half-moon shape), a plurality of arc-shaped female pieces 4 are overlapped with each other, and the size of the central hole diameter is changed through opening and closing actions. When the number of the female pieces 4 is large, such as more than 10, the hole 5 formed by the female pieces 4 can be more close to a circular shape in the contraction process, and the fluid pressure control is more accurate.

[0030] Specifically, there are many structures for adjusting the size of the holes of the adjusting assembly, and one of them is briefly described here. An external gear corresponding to the number and position of the female pieces 4 is rotatably installed in the valve body 1, the external gear is parallel to the axial direction of the valve body 1, and the root of the half-moon-shaped female piece 4 is fixedly connected to the external gear. An internal gear is fitted on the outside of the external gear, and the internal gear is meshed with a plurality of external gears. When the internal gear rotates, all the external gears synchronously rotate with the internal gear, so as to drive the female pieces 4 to swing and adjust the size of the hole 5 at the center.

[0031] In addition, the utility model also can open and close the valve through the remote electric and on-site manual mode, and the safety is higher, that is, a telescopic assembly such as an electric cylinder is installed on the outside of the valve body 1, the output end of the telescopic assembly is hinged with the external gear through a connecting rod, and with the telescopic expansion of the output end of the electric cylinder, the external gear can be driven to rotate around its own axis within a certain range through the connecting rod, so as to adjust the size of the hole 5.

[0032] The electric cylinder can be operated remotely through the communication module 3, which is prior art, and thus is not described in detail.

[0033] In the embodiment one, on the basis of the embodiment one, the utility model also proposes one kind of gear and installation mode of the pressure regulating device for the spraying system.

[0034] As shown in FIGS. Figure 1 and Figure 2 The valve body 1 is provided with a groove 101 near the edges of two ends, and a plurality of threaded holes 102 are arranged on the end surface of the valve body 1 and distributed in a circular array around the axis of the valve body 1.

[0035] The pressure regulating device is directly provided with a DC 24V working power supply by a monitoring host or a monitoring extension installed in a fire control room, so as to ensure the safety and stability of the system. The pressure regulating device is connected with a pipeline in the groove 101 mode, and at least 20 cm of space is reserved above the valve body 1 for later maintenance and use.

[0036] When the groove 101 is connected with the pipeline, the groove 101 can be fixed through the threaded hole 102, so that the size of the hole 5 is not affected by the outside during operation.

[0037] The valve body 1 has an axial length of 190mm, an outer diameter of 285mm, and an inner diameter of 240mm.

[0038] In summary, the pressure regulating device for the spray system is applicable to the automatic water spray fire extinguishing system, has the advantages of accurate regulation of pipeline pressure, real-time data transmission, real-time monitoring of the working state of the equipment, timely discovery and solution of pressure problems in the equipment and pipe network, real-time regulation of water outlet pressure when the water outlet pressure of the spray head is unstable during the fire extinguishing process of the water spray system, guarantee of the required pressure of the spray head, prevention of overpressure of the terminal system, and improvement of the safety of fire water supply.

[0039] In addition, the device can be uploaded to a fire cloud platform through the Internet of Things to realize intelligent adjustment and meet the requirements of the national construction of "smart fire protection".

[0040] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", and the like can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0041] In the description of the utility model, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0042] The above is according to the ideal embodiment of the present application, through the above description, the relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A pressure regulating device for a sprinkler system, characterized by: The utility model relates to a valve body (1) and pressure detection module (2) for detecting the pressure inside the valve body (1), the inside of the valve body (1) is provided with an adjusting assembly for adjusting the size of the output aperture, the adjusting assembly comprises a plurality of sets of female pieces (4) distributed in a circle around the axis of the valve body (1), and the plurality of sets of female pieces (4) overlap each other and form an adjustable hole (5) at the center.

2. The pressure regulating device for a sprinkler system according to claim 1, characterized in that: The female piece (4) adopts an arc structure.

3. The pressure regulating device for a sprinkler system according to claim 1, characterized by: The pressure detection module (2) adopts a pressure sensor.

4. The pressure regulating device for a sprinkler system according to claim 1, characterized by: The valve body (1) is provided with a groove (101) near the edges of both ends.

5. The pressure regulating device for a sprinkler system according to claim 4, characterized in that: A plurality of threaded holes (102) are formed on the end face of the valve body (1), and the plurality of threaded holes (102) are distributed in a circular array around the axis of the valve body (1).

6. The pressure regulating device for a sprinkler system according to claim 1, characterized by: The axial length of the valve body (1) is 190 mm, the outer diameter is 285 mm, and the inner diameter is 240 mm.

7. The pressure regulating device for a sprinkler system according to claim 6, characterized in that: The thickness of the female piece (4) is 5 mm, and the inner diameter of the hole (5) is less than 150 mm.

8. The pressure regulating device for a sprinkler system according to any of claims 1-7, characterized in that: The valve body (1) is also provided with a communication module (3), and the communication module (3) is electrically connected with the pressure detection module (2).

Images