Two-way pressure regulating box for building

Abstract

The utility model discloses a building double-path pressure regulating box which comprises a main path fuel gas channel, an auxiliary path fuel gas channel, a main path pressure regulator, a household pressure regulator, a main path valve assembly, an auxiliary path valve assembly and a stainless steel corrugated connecting pipe, the main path pressure regulator is arranged on the main path fuel gas channel, the main path valve assembly is used for controlling conduction of an inlet and an outlet of the main path fuel gas channel, and the household pressure regulator is arranged on the main path fuel gas channel. The household pressure regulator is arranged on the auxiliary path gas channel, the auxiliary path valve assembly is used for controlling communication of an inlet and an outlet of the auxiliary path gas channel, the main path valve assembly is communicated with the auxiliary path valve assembly, one end of the stainless steel corrugated connecting pipe is connected with the outlet end of the auxiliary path gas channel, and the other end of the stainless steel corrugated connecting pipe is connected with the auxiliary path valve assembly. An auxiliary path gas channel is connected with an inlet of an auxiliary path outlet ball valve through a stainless steel corrugated pipe, and the problem that the sealing size of a building pressure regulating box cannot be guaranteed can be solved by means of flexible connection of the stainless steel corrugated pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of building gas supply equipment, in particular to a double-circuit pressure regulating box for a building. Background Art

[0002] The building pressure regulating box is an installation box for placing the building pressure regulating device for gas transmission. Generally, the installation box is installed on the wall of the building. The building pressure regulating box integrates the gas pressure regulator, filter, pressure gauge, valve and safety accessories, etc. It occupies a small area, has good system coordination, complete functions and high reliability. As a pressure regulating device for the gas transmission and distribution network, the building pressure regulating box can be used as a gas pressure regulating equipment for residential areas and industrial and commercial users.

[0003] Existing building voltage regulating boxes generally adopt a dual-circuit setting, with the main and auxiliary circuits working together. During the machining process of the dual-circuit building voltage regulating box, especially for shaft parts that need to ensure the axial size, double centers will be used to tighten and then process at the same time. At this time, the coaxiality can be basically guaranteed, but the accuracy of the closed size of the end face formed by the step of the part cannot be guaranteed, especially the closed size of the end face formed by multiple steps of a shaft part, that is, the axial size. The reason is that the axial size of the center positioning is related to the chamfer of the center hole, and the chamfer of the center hole of the shaft part is not necessarily very standard, which will cause the closed size between the end faces, that is, the axial size, to shift. At this time, CNC machining will definitely cause displacement, so that the closed size of the end face formed by the step of the part, that is, the axial size, cannot be guaranteed. Utility Model Content

[0004] The utility model aims to provide a dual-circuit voltage regulating box for a building, which is used to solve the problem in the prior art that the closed size of the voltage regulating box for a building cannot be guaranteed.

[0005] In order to solve the above technical problems, the utility model adopts the following solutions:

[0006] A dual-circuit pressure regulating box for a building comprises a main gas channel, an auxiliary gas channel, a main pressure regulator, a household pressure regulator, a main valve assembly, an auxiliary valve assembly and a stainless steel corrugated connecting pipe, wherein the main pressure regulator is arranged on the main gas channel, the main valve assembly is used to control the conduction at the entrance and exit of the main gas channel, the household pressure regulator is arranged on the auxiliary gas channel, the auxiliary valve assembly is used to control the conduction at the entrance and exit of the auxiliary gas channel, the main valve assembly and the auxiliary valve assembly are connected, and one end of the stainless steel corrugated connecting pipe is connected to the outlet end of the auxiliary gas channel, and the other end is connected to the auxiliary valve assembly.

[0007] In some optional embodiments, the main valve assembly includes a main inlet ball valve and a main outlet ball valve, the main inlet ball valve is installed at the inlet of the main gas channel, and the main outlet ball valve is installed at the outlet of the main gas channel, the auxiliary valve assembly includes an auxiliary inlet ball valve and an auxiliary outlet ball valve, the auxiliary inlet ball valve is installed at the inlet of the auxiliary gas channel, the inlet of the main inlet ball valve is communicated with the inlet of the auxiliary inlet ball valve, the outlet of the main outlet ball valve is communicated with the outlet of the auxiliary outlet ball valve, one end of the stainless steel corrugated connecting pipe is connected to the outlet end of the auxiliary gas channel, and the other end is connected to the inlet of the auxiliary outlet ball valve.

[0008] In some optional implementations, the auxiliary line outlet ball valve and the auxiliary line inlet ball valve are both B-type small ball valves.

[0009] In some optional implementations, the inlet of the auxiliary gas channel is connected to the outlet of the auxiliary inlet ball valve by a waist-shaped flange.

[0010] In some optional implementations, the stainless steel corrugated connecting pipe is connected to the inlet of the auxiliary outlet ball valve by using a waist-shaped flange.

[0011] In some optional implementations, a three-way valve is installed at the inlet end of the main gas channel, and the three-way valve is respectively connected to the inlet end of the main inlet ball valve and the gas supply end.

[0012] In some optional implementations, the main inlet ball valve is connected to one end of the three-way valve via a waist-shaped flange.

[0013] In some optional embodiments, a main gas channel is provided with a main cut-off device.

[0014] Beneficial effects of the utility model:

[0015] The utility model discloses a dual-circuit pressure regulating box for a building, which connects a stainless steel bellows to the outlet end of an auxiliary gas channel, so that the auxiliary gas channel and the inlet of an auxiliary outlet ball valve are connected through the stainless steel bellows. The problem that the closed size of the pressure regulating box for a building cannot be guaranteed can be solved by relying on the flexible connection of the stainless steel bellows. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A front view of a dual-circuit voltage regulating box for a building provided in an embodiment of the utility model;

[0017] Figure 2 A top view of a dual-circuit voltage regulating box for a building provided in an embodiment of the utility model.

[0018] Description of reference numerals:

[0019] 1- Main gas channel, 2- Auxiliary gas channel, 3- Main pressure regulator, 4- Household pressure regulator, 5- Main inlet ball valve, 6- Main outlet ball valve, 7- Auxiliary inlet ball valve, 8- Auxiliary outlet ball valve, 9- Stainless steel corrugated connecting pipe, 10- Three-way valve. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below in conjunction with the embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0021] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0022] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "open", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The present invention is described in detail below with reference to the accompanying drawings and in combination with embodiments:

[0024] Embodiment 1:

[0025] like Figure 1 to Figure 2 As shown, this embodiment provides a dual-circuit pressure regulating box for a building, including a main gas channel 1, an auxiliary gas channel 2, a main pressure regulator 3, a household pressure regulator 4, a main valve assembly, an auxiliary valve assembly and a stainless steel corrugated connecting pipe 9, the main pressure regulator 3 is arranged on the main gas channel 1, the main valve assembly is used to control the conduction at the inlet and outlet of the main gas channel 1, the household pressure regulator 4 is arranged on the auxiliary gas channel 2, the auxiliary valve assembly is used to control the conduction at the inlet and outlet of the auxiliary gas channel 2, the main valve assembly and the auxiliary valve assembly are connected, and one end of the stainless steel corrugated connecting pipe 9 is connected to the outlet end of the auxiliary gas channel 2, and the other end is connected to the auxiliary valve assembly.

[0026] Among them, the main valve assembly includes a main inlet ball valve 5 and a main outlet ball valve 6, the main inlet ball valve 5 is installed at the inlet of the main gas channel 1, and the main outlet ball valve 6 is installed at the outlet of the main gas channel 1. The auxiliary valve assembly includes an auxiliary inlet ball valve 7 and an auxiliary outlet ball valve 8, the auxiliary inlet ball valve 7 is installed at the inlet of the auxiliary gas channel 2, the inlet of the main inlet ball valve 5 is connected to the inlet of the auxiliary inlet ball valve 7, and the outlet of the main outlet ball valve 6 is connected to the outlet of the auxiliary outlet ball valve 8. One end of the stainless steel corrugated connecting pipe 9 is connected to the outlet end of the auxiliary gas channel 2, and the other end is connected to the inlet of the auxiliary outlet ball valve 8.

[0027] Stainless steel bellows is a flexible pressure-resistant pipe fitting that can compensate for the mutual displacement of the connection ends of pipelines and equipment, thereby solving the problem of closed size. The connection method between the stainless steel bellows and the auxiliary gas channel or the auxiliary valve assembly can be flange connection, threaded connection, quick connector connection, etc. The main inlet ball valve 5 and the auxiliary inlet ball valve 7 can realize the protection of the inlet switch of the main gas channel 1 and cut off the gas source; the main pressure regulator 3 and the indoor pressure regulator realize the function of regulating pressure; the main cut-off device realizes emergency cut-off and has the function of safety protection; the main outlet ball valve 6 and the auxiliary outlet ball valve 8 can be used to cut off the gas supply to the rear end.

[0028] Specifically, a three-way valve 10 is installed at the inlet end of the main gas channel 1, and the three-way valve 10 is respectively connected to the inlet end of the main inlet ball valve 5, the inlet end of the main gas channel 1 and the gas supply end. The three-way valve 10 is installed between the inlet end of the main gas channel 1 and the inlet end of the main inlet ball valve 5, and is connected to the main inlet ball valve 5 through a waist-shaped flange. It can be understood that the main gas channel 1 includes an air inlet pipe and an air outlet pipe. The main pressure regulator 3 is arranged on the main gas channel 1, which means that the air inlet end and the air outlet end of the main pressure regulator 3 are respectively connected to the air inlet pipe and the air outlet pipe, the air inlet pipe is connected to one end of the three-way valve 10 and then connected to the inlet of the main inlet ball valve 5, and the air outlet pipe is connected to the inlet of the main outlet ball valve 6. The auxiliary gas channel 2 is divided into an auxiliary air inlet pipe and an auxiliary air outlet pipe. The household pressure regulator 4 is arranged on the auxiliary gas channel 2, which means that the air inlet end and the air outlet end of the household pressure regulator 4 are respectively connected to the auxiliary air inlet pipe and the auxiliary air outlet pipe, and one end of the stainless steel corrugated connecting pipe 9 is connected to the auxiliary air outlet pipe, and the other end is connected to the inlet of the auxiliary outlet ball valve 8.

[0029] More specifically, the main inlet ball valve 5 and the main outlet ball valve 6 are both non-standard ball valves, and the auxiliary outlet ball valve 8 and the auxiliary inlet ball valve 7 are both B-type small ball valves. The auxiliary gas outlet pipe of the auxiliary gas channel 2 is connected to the outlet of the auxiliary inlet ball valve 7 by a waist-shaped flange. Among them, the stainless steel corrugated connecting pipe 9 is connected to the inlet end of the auxiliary outlet ball valve 8 by a waist-shaped flange. The main inlet ball valve 5 is connected to the three-way valve 10 through a waist-shaped flange. The flange connection can eliminate the air leakage caused by the threaded connection. The three-way valve adopts the existing commonly used three-way valve body, which is not described in detail in this article.

[0030] Optionally, a main gas channel 1 is provided with a main cut-off device. In this way, when the pressure regulating box is inspected, the gas supply can be uninterrupted, and the main gas channel 1 can be repaired online, which is easy to maintain; the building pressure regulating box with the auxiliary road can be used together during peak load regulation.

[0031] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A dual-circuit voltage regulating box for a building, characterized in that: The invention comprises a main gas channel (1), an auxiliary gas channel (2), a main pressure regulator (3), a household pressure regulator (4), a main valve assembly, an auxiliary valve assembly and a stainless steel corrugated connecting pipe (9), wherein the main pressure regulator (3) is arranged on the main gas channel (1), the main valve assembly is used to control the conduction at the inlet and outlet of the main gas channel (1), the household pressure regulator (4) is arranged on the auxiliary gas channel (2), the auxiliary valve assembly is used to control the conduction at the inlet and outlet of the auxiliary gas channel (2), the main valve assembly and the auxiliary valve assembly are connected, and one end of the stainless steel corrugated connecting pipe (9) is connected to the outlet end of the auxiliary gas channel (2), and the other end is connected to the auxiliary valve assembly.

2. A dual-circuit voltage regulating box for a building according to claim 1, characterized in that: The main valve assembly comprises a main inlet ball valve (5) and a main outlet ball valve (6), wherein the main inlet ball valve (5) is installed at the inlet of the main gas channel (1), and the main outlet ball valve (6) is installed at the outlet of the main gas channel (1); the auxiliary valve assembly comprises an auxiliary inlet ball valve (7) and an auxiliary outlet ball valve (8), wherein the auxiliary inlet ball valve (7) is installed at the inlet of the auxiliary gas channel (2), the inlet of the main inlet ball valve (5) is communicated with the inlet of the auxiliary inlet ball valve (7), and the outlet of the main outlet ball valve (6) is communicated with the outlet of the auxiliary outlet ball valve (8); one end of a stainless steel corrugated connecting pipe (9) is connected to the outlet end of the auxiliary gas channel (2), and the other end is connected to the inlet of the auxiliary outlet ball valve (8).

3. A dual-circuit voltage regulating box for a building according to claim 2, characterized in that: The auxiliary line outlet ball valve (8) and the auxiliary line inlet ball valve (7) are both B-type small ball valves.

4. A dual-circuit voltage regulating box for a building according to claim 2, characterized in that: The inlet of the auxiliary road gas channel (2) and the outlet of the auxiliary road inlet ball valve (7) are connected by a waist-shaped flange.

5. A dual-circuit voltage regulating box for a building according to claim 2, characterized in that: The stainless steel corrugated connecting pipe (9) is connected to the inlet of the auxiliary road outlet ball valve (8) by a waist-shaped flange.

6. A dual-circuit voltage regulating box for a building according to claim 2, characterized in that: A three-way valve (10) is installed at the inlet end of the main gas channel (1), and the three-way valve (10) is respectively connected to the inlet end and the gas supply end of the main inlet ball valve (5).

7. A dual-circuit voltage regulating box for a building according to claim 6, characterized in that: The main inlet ball valve (5) is connected to one end of the three-way valve (10) via a waist-shaped flange.

8. A dual-circuit voltage regulating box for a building according to claim 1, characterized in that: A main gas channel (1) is provided with a main cut-off device.

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