Automatic plugging device for dismounting pressure gauge

Abstract

The utility model provides an automatic plugging device for dismounting a pressure gauge, which is characterized in that an upper shell is arranged on a pipeline through a lower shell, a first airflow channel is arranged in the middle of the lower shell, and a conical inner cavity which is slightly larger than a movable cone is arranged in the upper shell; the bottom of the movable cone is connected with the lower shell through a spring and installed in the upper shell through the conical inner cavity, a cylinder moving end is arranged on the upper portion of the movable cone, a second airflow channel is formed in the middle of the cylinder moving end, and an air inlet communicated with the second airflow channel is formed in the bottom of the cylinder moving end. A first sealing ring is fixedly mounted in the circumferential direction of the movable cone, a pressure gauge mounting end is arranged on the upper shell, when a pressure gauge is mounted in place, the cylinder moving end and the movable cone are driven to move downwards as a whole, and the pressure gauge is communicated with the pipeline through a second airflow channel, an air inlet hole, the interior of the upper shell and a first airflow channel; when the pressure gauge is dismounted, the movable cone compresses the first sealing ring through upward movement and reset of the spring to achieve automatic plugging.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas pipeline technical field, especially relate to a pressure gauge dismounting automatic plugging device. BACKGROUND

[0002] When the pressure gauge is connected to the gas pipeline network or equipment, it is usually connected by a valve, when the pressure gauge needs to be dismounted, the ball valve needs to be closed, and the pressure gauge is removed. The process has the following shortcomings: when the pressure gauge is removed, the ball valve may be opened due to misoperation, which will cause gas leakage and hidden dangers. UTILITY MODEL CONTENTS

[0003] To solve the above problems, the utility model aims at providing a pressure gauge dismounting automatic plugging device, which can realize automatic plugging when the pressure gauge is dismounted, is safe and reliable, and will not cause gas leakage due to misoperation.

[0004] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0005] A pressure gauge dismounting automatic plugging device, comprising an upper shell, a lower shell and a movable vertebra, the upper shell is installed on the pipeline through the lower shell, a first airflow channel is arranged in the middle of the lower shell, a conical inner cavity slightly larger than the movable vertebra is arranged in the inside of the upper shell, the bottom of the movable vertebra is connected to the lower shell through a spring and installed in the inside of the upper shell through the conical inner cavity, a cylindrical moving end is arranged at the upper part of the movable vertebra, a second airflow channel is arranged in the middle of the cylindrical moving end, an air inlet hole in communication with the second airflow channel is arranged at the bottom of the cylindrical moving end, a first sealing ring is fixedly installed around the movable vertebra, a pressure gauge mounting end is arranged on the upper shell, when the pressure gauge is installed in place through the pressure gauge mounting end, the cylindrical moving end and the movable vertebra are driven to move downward as a whole, the pressure gauge is connected in communication with the pipeline through the second airflow channel, the air inlet hole, the inside of the upper shell and the first airflow channel; when the pressure gauge is dismounted, the movable vertebra is moved upward by the spring to reset and compress the first sealing ring to realize automatic plugging.

[0006] Further, the second sealing ring is fixedly installed around the cylindrical moving end.

[0007] Further, a first groove is arranged at the upper part of the lower shell, and the first groove is used for installing the spring.

[0008] Further, a conical inclined surface is arranged in the first groove, and the spring is installed in the first groove through the conical inclined surface.

[0009] Further, threads are arranged at the upper and lower ends of the lower shell, and the lower shell is connected with the upper shell and the pipeline through the threads.

[0010] Further, the top of the lower shell is fixedly provided with a third sealing ring, which abuts against the lateral inner wall of the bottom of the conical inner cavity of the upper shell when the lower shell is screwed into the upper shell.

[0011] Further, the inside of the upper shell is provided with a cylindrical through hole slightly larger than the cylindrical moving end.

[0012] Further, the pressure gauge mounting end is a threaded hole, and the center end of the cylindrical moving end is provided with a groove for matching the "protrusion" of the pressure gauge connector.

[0013] Beneficial effects: the utility model can realize automatic plugging when the pressure gauge is disassembled, is safe and reliable, and will not cause gas leakage due to valve opening by mistake; the utility model is directly installed on the pipeline, so that the valve can be saved, and the process is simpler. BRIEF DESCRIPTION OF DRAWINGS

[0014] The drawings constituting a part of the utility model are used to provide further understanding of the utility model, and the illustrative embodiment of the utility model and the description thereof are used to explain the utility model, and do not constitute improper limitation on the utility model. In the drawings:

[0015] Fig. 1 The structure schematic view of the pressure gauge dismounting automatic plugging device is described in the embodiment of the utility model;

[0016] Fig. 2 The pressure gauge dismounting automatic plugging device and the pressure gauge cooperation detection schematic view are described in the embodiment of the utility model. DETAILED DESCRIPTION

[0017] It should be noted that the embodiment in the utility model and the features in the embodiment can be combined with each other in the case of no conflict.

[0018] The utility model will be described in detail below with reference to the drawings and in combination with the embodiment.

[0019] Embodiment 1

[0020] Reference Figs. 1-2The utility model provides a pressure gauge dismounting automatic plugging device, including upper casing 1, lower casing 2 and movable vertebra 3, upper casing 1 is installed on pipeline through lower casing 2, the middle part of lower casing 2 is provided with first airflow channel 201, the inside of upper casing 1 is provided with the conical inner chamber 101 slightly larger than movable vertebra 3, the bottom of movable vertebra 3 is connected lower casing 2 through spring 4 and is installed in the inside of upper casing 1 through conical inner chamber 101, the upper portion of movable vertebra 3 is equipped with cylinder moving end 301, the middle part of cylinder moving end 301 is provided with second airflow channel 3011, the bottom of cylinder moving end 301 is provided with the air inlet hole 3012 of second airflow channel 3011 intercommunication, the circumference of movable vertebra 3 is fixedly installed with first sealing ring 302, upper casing 1 is provided with pressure gauge mounting end, when pressure gauge is installed in place through pressure gauge mounting end, drives cylinder moving end 301, movable vertebra 3 and moves down as a whole, and pressure gauge and pipeline are connected through second airflow channel 3011, air inlet hole 3012, the inside of upper casing 1, first airflow channel 201 and pipeline when pressure gauge is removed, movable vertebra 3 is reset and compresses first sealing ring 302 by spring 4 and moves up and realizes automatic plugging.

[0021] When pressure gauge is installed in place, pressure gauge joint pushes down cylinder moving end and movable cone, and first sealing ring is separated from conical inner chamber at this time, and clearance is formed, and the gas in pipeline enters pressure gauge from " the first airflow channel of lower casing→ the clearance at first sealing ring→ air inlet hole→ the second airflow channel of movable cone", so that pressure gauge can detect pressure, when pressure gauge is removed, movable vertebra moves up and resets due to the action of spring, and first sealing ring is contacted with conical inner chamber and is compressed to seal, so that automatic plugging is realized.

[0022] In a specific example, the circumference of cylinder moving end 301 is fixedly installed with second sealing ring 3013.

[0023] The embodiment improves the sealing property between upper casing and pressure gauge through second sealing ring, prevents the gas leakage in pipeline, and improves safety.

[0024] In a specific example, the upper portion of lower casing 2 is provided with first recess 202, and the first recess 202 is used for installing spring 4.

[0025] The embodiment improves the accuracy of spring reset through the first recess for installing spring.

[0026] In a specific example, the first recess 202 is provided with conical slope 2021, and spring 4 is installed in the first recess 202 through conical slope 2021.

[0027] The embodiment can make spring be placed in the middle and not be easily dislocated through the conical slope in the first recess for installing spring.

[0028] In a specific example, the upper and lower ends of the lower shell 2 are provided with threads, and the lower shell 2 is connected with the upper shell 1 and the pipeline through threads.

[0029] The upper and lower shells of the embodiment are connected with the pipeline through threads, which is convenient for installation and dismounting.

[0030] In a specific example, the top of the lower shell 2 is fixedly provided with a third sealing ring 203, and when the lower shell 2 is connected with the upper shell 1 through threads, the third sealing ring 203 is in abutment with the bottom transverse inner wall of the conical inner cavity 101 of the upper shell 1.

[0031] The embodiment improves the sealing between the upper and lower shells through the third sealing ring, prevents the gas in the pipeline from leaking, and improves the safety.

[0032] In a specific example, the inside of the upper shell 1 is provided with a cylindrical through hole 102 slightly larger than the cylindrical moving end 301.

[0033] When the cylindrical moving end moves up and down through the cylindrical through hole, the second sealing ring keeps the sealing state with the outside, preventing the gas from leaking.

[0034] In a specific example, the pressure gauge mounting end is a threaded mounting hole 103, and the center end of the cylindrical moving end 301 is provided with a groove 3014 for matching the "protrusion" of the pressure gauge connector.

[0035] The embodiment realizes the stable connection of the pressure gauge and the protrusion through the groove, and the groove is communicated with the second airflow channel, realizing the stable communication between the pressure gauge and the inside of the pipeline.

[0036] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An automatic sealing device for disassembling a pressure gauge, characterized in that, The device includes an upper shell (1), a lower shell (2), and a movable cone (3). The upper shell (1) is mounted on a pipe via the lower shell (2). A first airflow channel (201) is provided in the middle of the lower shell (2). The upper shell (1) has a conical inner cavity (101) slightly larger than the movable cone (3). The bottom of the movable cone (3) is connected to the lower shell (2) via a spring (4) and is mounted inside the upper shell (1) via the conical inner cavity (101). The upper part of the movable cone (3) has a cylindrical moving end (301). A second airflow channel (3011) is provided in the middle of the cylindrical moving end (301). The bottom of the cylindrical moving end (301) has a cylindrical moving end (301) at the bottom. The part is provided with an air inlet (3012) communicating with the second airflow channel (3011). The movable cone (3) is circumferentially fixed with a first sealing ring (302). The upper shell (1) is provided with a pressure gauge mounting end. When the pressure gauge is installed in place through the pressure gauge mounting end, it drives the cylindrical moving end (301) and the movable cone (3) to move down as a whole. The pressure gauge and the pipeline are connected through the second airflow channel (3011), the air inlet (3012), the inside of the upper shell (1), the first airflow channel (201) and the pipeline. When the pressure gauge is removed, the movable cone (3) moves up and resets by the spring (4) to compress the first sealing ring (302) to achieve automatic sealing.

2. The automatic sealing device for disassembling pressure gauges according to claim 1, characterized in that, The cylindrical moving end (301) is circumferentially fixed with a second sealing ring (3013).

3. The automatic sealing device for disassembling pressure gauges according to claim 1, characterized in that, The lower housing (2) has a first groove (202) on its upper part, which is used to install the spring (4).

4. The automatic sealing device for disassembling pressure gauges according to claim 3, characterized in that, A tapered inclined surface (2021) is provided in the first groove (202), and the spring (4) is installed in the first groove (202) through the tapered inclined surface (2021).

5. The automatic sealing device for disassembling pressure gauges according to claim 1, characterized in that, The lower housing (2) is threaded at both the upper and lower ends, and the lower housing (2) is connected to the upper housing (1) and the pipe by threads.

6. The automatic sealing device for disassembling pressure gauges according to claim 5, characterized in that, A third sealing ring (203) is fixedly installed on the top of the lower housing (2). When the lower housing (2) and the upper housing (1) are installed in place by threads, the third sealing ring (203) abuts against the bottom transverse inner wall of the conical inner cavity (101) of the upper housing (1).

7. The automatic sealing device for disassembling pressure gauges according to claim 1, characterized in that, The upper housing (1) has a cylindrical through hole (102) that is slightly larger than the cylindrical moving end (301).

8. The automatic sealing device for disassembling pressure gauges according to claim 1, characterized in that, The pressure gauge mounting end is a threaded mounting hole (103), and the center end of the cylindrical moving end (301) is provided with a groove (3014) to match the "protrusion" of the pressure gauge connector.

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