Multi-position pressure reducing and stabilizing fire hydrant

Abstract

The utility model discloses a multi-position pressure-reducing and pressure-stabilizing fire hydrant, which relates to the technical field of fire-fighting equipment and comprises a hydrant body, a water inlet pipe and a water outlet pipe which are communicated and fixedly arranged on the hydrant body, and two groups of pressure-reducing and pressure-stabilizing components which are respectively and fixedly arranged in a water passage which is formed among the hydrant body, the water inlet pipe and the water outlet pipe, one group of pressure reducing and stabilizing assemblies which are impacted by water in advance has higher response sensitivity than the other group of pressure reducing and stabilizing assemblies; the pressure reducing and stabilizing device has the advantages that the two pressure reducing and stabilizing assemblies are arranged in the water passage, and one pressure reducing and stabilizing assembly is high in response sensitivity after being impacted by water relative to the other pressure reducing and stabilizing assembly, that is, the pressure reducing and stabilizing assembly is used for preliminary pressure reduction before being impacted by water, and pressure change is quickly responded; and then the water receiving group is used for fine adjustment, so that the quick pressure stabilizing effect is provided, and meanwhile, the water buffering stabilizing capacity and the water buffering adjusting capacity are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire fighting equipment, and more specifically to a multi-position pressure reducing and stabilizing fire hydrant. Background Art

[0002] Pressure reducing and stabilizing fire hydrants are an important component in fire protection systems, mainly used in automatic sprinkler systems or fire water supply systems. Their main functions include pressure reduction and pressure stabilization to ensure that a stable and appropriate pressure water flow can be provided when a fire occurs, which not only meets the fire extinguishing needs, but also prevents pipeline damage or affects the fire extinguishing effect due to excessive pressure.

[0003] Existing pressure reducing and stabilizing fire hydrants generally only have pressure reducing and stabilizing components at the outlet pipe {such as the "movable orifice plate; spring; fixed orifice plate" described in the publication (announcement) number: CN214404708U, a rotary pressure reducing and stabilizing indoor fire hydrant}. However, when only one group is set, the control accuracy is only adjusted elastically through one group of "springs", and the water stabilization ability is insufficient and the adjustment ability is poor. Utility Model Content

[0004] The purpose of the utility model is to solve the above technical problems and provide a multi-position pressure reducing and stabilizing fire hydrant.

[0005] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0006] The utility model proposes a multi-position pressure reducing and stabilizing fire hydrant, comprising a hydrant body and a water inlet pipe and a water outlet pipe which are connected and fixed on the hydrant body, a water passage for water flow is formed between the hydrant body, the water inlet pipe and the water outlet pipe, and also comprises two groups of pressure reducing and stabilizing components which are respectively fixed in the water passage, and one group of pressure reducing and stabilizing components which are pre-impacted with water has a higher response sensitivity than the other group of pressure reducing and stabilizing components.

[0007] As a preferred technical solution of the utility model, the two groups of pressure reducing and stabilizing components are respectively fixed in the water inlet pipe and the water outlet pipe.

[0008] As a preferred technical solution of the utility model, the pressure reducing and stabilizing assembly includes a fixed orifice plate fixed in the water channel and a spring and a movable orifice plate fixed in sequence at one end of the fixed orifice plate.

[0009] As a preferred technical solution of the utility model, one plate end of the fixed orifice plate faces the direction of water flow.

[0010] As a preferred technical solution of the utility model, the spring rigidity of the one group of pressure reducing and voltage stabilizing components is smaller than the spring rigidity of the other group of pressure reducing and voltage stabilizing components.

[0011] The beneficial effects of the utility model are as follows:

[0012] Two groups of pressure reducing and stabilizing components 4 are arranged in the water channel, and one group of the two groups of pressure reducing and stabilizing components 4 has a high response sensitivity to water impact relative to the other group. That is, before receiving water, the group is used for initial pressure reduction by the pressure reducing and stabilizing components 4, and quickly responds to pressure changes, and then the group after receiving water performs fine adjustment, so as to provide a rapid pressure stabilization effect, and at the same time, increase the stability and regulation capabilities of slow water. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure numerals: plug body-1, water inlet pipe-2, water outlet pipe-3, pressure reducing and stabilizing assembly-4, fixed orifice plate-41, spring-42, movable orifice plate-43. DETAILED DESCRIPTION

[0015] like Figure 1 As shown, the utility model proposes: a multi-position pressure reducing and stabilizing fire hydrant, comprising a hydrant body 1 and a water inlet pipe 2 and a water outlet pipe 3 connected and fixedly mounted on the hydrant body 1 (as shown in the figure, the right end of the hydrant body 1 is connected and fixedly connected to the water outlet pipe 3, and the bottom end is connected and fixedly connected to the water inlet pipe 2, the water inlet pipe 2 can also be installed with a seat to connect to external water, and the water outlet pipe 3 is used to connect a fire hose, etc.);

[0016] A water channel for water flow is formed between the plug body 1, the water inlet pipe 2 and the water outlet pipe 3 (as shown in the figure, the water channel is an "L"-shaped channel upward and then to the right);

[0017] It also includes two groups of pressure reducing and stabilizing components 4 respectively fixed in the water channel, one group of pressure reducing and stabilizing components 4 subjected to water shock in advance has a higher response sensitivity than the other group of pressure reducing and stabilizing components 4 (i.e., the response sensitivity is higher under the same water shock conditions), (according to the above, the pressure reducing and stabilizing components 4 of the group before receiving water are used for preliminary pressure reduction and rapid response to pressure changes, and the group after receiving water performs fine adjustment to provide a rapid pressure stabilization effect, and at the same time, increase the stability and regulation ability of slow water);

[0018] The two groups of pressure reducing and stabilizing components 4 are respectively fixed in the water inlet pipe 2 and the water outlet pipe 3 (which can provide more accurate pressure difference control: one group of pressure reducing and stabilizing components 4 is located in the water outlet pipe 3, which is mainly responsible for adjusting the final output water pressure to ensure that it meets the fire extinguishing requirements; and the other group is located in the water inlet pipe 2, which can be pre-adjusted before the water source enters the plug body 1, which helps to reduce the impact of water source pressure fluctuations on system stability; such a layout can achieve more delicate pressure difference control, especially when the water source pressure fluctuates greatly, to maintain the stability of the water outlet pressure);

[0019] In order to implement the above-mentioned pressure reducing and stabilizing component 4, it is proposed that Figure 1 As shown, the specific structure and composition of the pressure reducing and stabilizing component 4 can be as follows: the pressure reducing and stabilizing component 4 includes a fixed orifice plate 41 fixed in the water channel, and a spring 42 and a movable orifice plate 43 fixed in sequence at one end of the fixed orifice plate 41 (as shown in the figure, the movable orifice plate 43 and the spring 42 fixing the orifice plate 41 are sequentially arranged according to the flow direction of the water channel);

[0020] One end of the fixed orifice plate 41 faces the direction of water flow, providing water flow pressure to the plate end to generate pressure on the spring 42 to form compression;

[0021] The rigidity of the spring 42 of the one group of pressure reducing and stabilizing components 4 is smaller than the rigidity of the spring 42 of the other group of pressure reducing and stabilizing components 4 (as shown in the figure, the pressure reducing and stabilizing components 4 in the water inlet pipe 2 and the pressure reducing and stabilizing components 4 in the water outlet pipe 3);

[0022] When the water flow impacts, the spring 42 of the pressure reducing and stabilizing component 4 in the water inlet pipe 2 has a small rigidity and can respond quickly to pressure changes, and is used for initial pressure reduction, especially in the initial stage of use or when the pressure suddenly changes, and can be quickly adjusted to meet the needs; the spring 42 of the pressure reducing and stabilizing component 4 in the water outlet pipe 3 is set with a larger stiffness, which plays a role in fine adjustment and pressure stabilization, so that it can more efficiently cope with instantaneous large flow requirements while maintaining the continuous stability of the output pressure.

[0023] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A multi-position pressure reducing and stabilizing fire hydrant, comprising a hydrant body (1) and a water inlet pipe (2) and a water outlet pipe (3) connected and fixed to the hydrant body (1), wherein a water channel for water flow is formed between the hydrant body (1), the water inlet pipe (2) and the water outlet pipe (3), and characterized in that: It also includes two groups of pressure reducing and stabilizing components (4) respectively fixed in the water channel, wherein one group of pressure reducing and stabilizing components (4) pre-impacted with water has a higher response sensitivity than the other group of pressure reducing and stabilizing components (4).

2. A multi-position pressure reducing and stabilizing fire hydrant according to claim 1, characterized in that: The two groups of pressure reducing and stabilizing components (4) are respectively fixedly mounted in the water inlet pipe (2) and the water outlet pipe (3).

3. A multi-position pressure reducing and stabilizing fire hydrant according to claim 2, characterized in that: The pressure reducing and stabilizing assembly (4) comprises a fixed orifice plate (41) fixed in the water passage, and a spring (42) and a movable orifice plate (43) fixed in sequence to one end of the fixed orifice plate (41).

4. A multi-position pressure reducing and stabilizing fire hydrant according to claim 3, characterized in that: One plate end of the fixed orifice plate (41) faces the water flow direction.

5. A multi-position pressure reducing and stabilizing fire hydrant according to claim 4, characterized in that: The rigidity of the springs (42) of the one group of pressure reducing and stabilizing components (4) is smaller than the rigidity of the springs (42) of the other group of pressure reducing and stabilizing components (4).

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