Gas channel pressure gauge for pressure regulator

Abstract

The utility model relates to a fuel gas channel pressure gauge for a pressure regulator, which comprises a pressure gauge body, a three-way connecting pipe and a matching connector, a connecting part of the pressure gauge body is connected with an upper connecting port of the three-way connecting pipe, and the matching connector comprises an upper connector, an elastic connecting pipe and a lower connector which are sequentially connected. A lower connector of the three-way connecting pipe is detachably connected with the upper connector, and a first external thread is arranged on the outer end face of the lower connector. The telescopic matching connector is designed and is different from a conventional metal pipe matching connector, and the matching connector is integrated with the elastic connecting pipe, so that the whole matching connector can be telescopically bent, field testers can apply the pressure gauge in some narrow areas conveniently, the direct connection limitation of the pressure gauge and the pressure measuring opening of the gas pipe is avoided, and the pressure measuring efficiency is improved. And a tester needs to stoop to check a measurement result, so that the use experience of the tester is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas measuring instrument technical field especially is concerned with a gas passage pressure gauge for pressure regulator. BACKGROUND

[0002] The gas pressure regulating box is the key equipment in the gas transmission and distribution system, mainly used for adjusting and controlling the gas pressure, reducing the pressure of the upstream gas and delivering to the user end, and keeping the output pressure stable to ensure that the gas appliance obtains the best combustion air-fuel ratio and the user end gas supply is safe and stable. When the gas internal pipeline gas flow fluctuates, the internal pipeline pressure needs to be automatically adjusted to avoid abnormal upstream and downstream pressure. Currently, the gas pipeline pressure fluctuation is tested by controlling the output pressure and closing pressure of the gas outlet of the bottled liquefied petroleum gas pressure regulator through the pressure measuring outlet switch. For example, the application number 202421664277.X discloses a portable pressure gauge for quickly measuring the output pressure of the pressure regulator. Although this pressure gauge can quickly measure the pressure regulator, it is limited by the application scene, and some pressure regulators are installed in narrow positions, so the pressure gauge is not convenient to directly connect to the pressure measurement, and it is extremely inconvenient to use, so further improvement is needed. SUMMARY

[0003] Therefore, it is necessary to provide a gas passage pressure gauge for pressure regulator to solve the above problems.

[0004] A gas passage pressure gauge for pressure regulator, comprising a pressure gauge body, a tee connection pipe and a matching connector, the connecting part of the pressure gauge body is connected with the upper connecting port of the tee connection pipe, the matching connector comprises an upper connector, an elastic connection pipe and a lower connector connected in sequence, the lower connecting port of the tee connection pipe is detachably connected with the upper connector, and the outer end surface of the lower connector is provided with a first external thread.

[0005] Preferably, the elastic connection pipe is a bellows, and the spiral recess of the elastic connection pipe is embedded with a spring.

[0006] Preferably, the outer end surface of the upper connector is provided with a second external thread for thread connection with the lower connecting port, and the end of the second external thread is provided with a sealing ring.

[0007] Preferably, the end surface of the sealing ring is embedded with a sealing rubber ring.

[0008] The utility model has the advantages that the matching connector is designed to be telescopic, which is different from the metal pipe matching connector in the prior art. The matching connector integrates the elastic connection pipe, so that the whole matching connector can be telescopic and bent, greatly facilitating the on-site testers to apply the pressure gauge in some narrow areas, avoiding the limitation of the direct connection of the pressure gauge and the gas pipe pressure measuring port, and greatly improving the testers' use experience. BRIEF DESCRIPTION OF DRAWINGS

[0009] Fig. 1 A gas passage pressure gauge for a pressure regulator is shown in perspective view;

[0010] Fig. 2 A gas passage pressure gauge for a pressure regulator is shown in cross-sectional view. DETAILED DESCRIPTION

[0011] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without some or all of these specific details. In other instances, well known process steps have not been described in detail in order to avoid obscuring the present application. The specific embodiments of the present application as set forth are intended to be illustrative, and not limiting of the present application.

[0012] It is to be understood that where an element is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0014] As Figs. 1-2As shown, a kind of gas passage pressure gauge for pressure regulator, including pressure gauge body 1, three-way connector pipe 2 and matching connector 3, the connecting portion 11 of the pressure gauge body 1 is connected with the upper connecting port 21 of three-way connector pipe 2, the matching connector 3 includes upper connector 31, elastic connecting pipe 32 and lower connector 33 connected in sequence, the lower connecting port 22 of three-way connector pipe 2 is detachably connected with upper connector 31, and the outer end surface of lower connector 33 is provided with first external thread.Specifically, pressure gauge body 1 is provided with liquid crystal instrument panel, to facilitate operator to visually observe detection parameter, further, data transmission interface can be integrated on pressure gauge body 1, and parameter information detected is sent to background computer terminal, data interface can adopt TYPE-C structure form, to match the thickness of pressure gauge body 1, when assembling, the external thread of the connecting portion 11 of pressure gauge body 1 is detachably connected with the internal thread of the upper connecting port 21 of three-way connector pipe 2, sealing adhesive tape is wound at the connecting portion, to enhance the sealing property, the lower connecting port 22 of three-way connector pipe 2 is detachably connected with the upper connector 31 of matching connector 3, and the upper connector 31 of matching connector 3 is also connected by thread structure, a three-way plug valve is integrated on the middle interface of three-way connector pipe 2, to adjust the flow rate of gas medium in pipeline and realize flow direction switching.Further, matching connector 3 is used as intermediate connecting piece, to match the lower connecting port 22 of three-way connector pipe 2 with pressure measuring port on gas pipe, and simultaneously, the matching connector 3 designed by us is different from the metal pipe matching connector in the prior art, and the matching connector 3 designed by us is integrated with elastic connecting pipe 32, so that the matching connector 3 as a whole can be telescopic and bent, to greatly facilitate field test personnel to apply the pressure gauge in some narrow areas, avoid the limitation of direct connection between pressure gauge and pressure measuring port on gas pipe, and greatly improve the use experience of test personnel.

[0015] As Figs. 1-2 shown, the elastic connecting pipe 32 is bellows, and the spiral recess of the elastic connecting pipe 32 is embedded with spring 321.Specifically, the spring 321 is matched with the bellows, because the spring 321 is embedded in the recess on the outer surface of the bellows, the rapid deformation feature of the spring 321 can match the deformation feature of the bellows, to enhance the elastic property of the bellows as a whole, and the tensile resistance is good, while avoiding occupying additional space, and the outer diameter of the bellows will not be increased, and the bellows is suitable for use in narrow space.

[0016] As Figs. 1-2 shown, the outer end surface of the upper connector 31 is provided with second external thread for thread connection with the lower connecting port 22, and the distal end of the second external thread is provided with sealing ring 311, the sealing ring 311 can play a limiting role and block the lower connecting port 22, to enhance the air tightness of the connecting portion.

[0017] Specifically, a sealing rubber ring is embedded in the end face of the sealing ring 311, used for enhancing the sealing property of the connection between the upper connecting head 31 and the lower connecting port 22, preventing leakage.

[0018] The above-mentioned embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, under the premise of not departing from the utility model concept, several modifications and improvements can be made, which all belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A gas passage manometer for a pressure regulator, characterized by: The utility model relates to a pressure gauge, including pressure gauge body, three -way connecting pipe and matching connector, the connecting portion of pressure gauge body is connected with the upper connecting mouth of three -way connecting pipe, the matching connector includes the upper connector of connection in proper order, elastic connecting pipe and lower connector, the lower connecting mouth of three -way connecting pipe is detachably connected with upper connector, and the outer end surface of lower connector is provided with first outer thread.

2. A gas passage pressure gauge for a pressure regulator according to claim 1, characterized in that: The elastic connecting pipe is a bellows, and a spring is embedded in the spiral recess of the elastic connecting pipe.

3. A gas passage pressure gauge for a pressure regulator according to claim 1, characterized in that: The outer end surface of the upper connector is provided with a second outer thread for threadedly connecting with the lower connecting mouth, and the end of the second outer thread is provided with a sealing ring.

4. A gas passage pressure gauge for a pressure regulator as set forth in claim 3, characterized in that: The end surface of the sealing ring is embedded with a sealing rubber ring.

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