CN218994619U

CN218994619U - Non-stop detection device for pressure gauge

Info

Publication number: CN218994619U
Application number: CN202222087509.7U
Authority: CN
Inventors: 岳智革; 叶礼明; 庆增宏; 张伟
Original assignee: 91370 Troops Of Chinese Pla
Current assignee: 91370 Troops Of Chinese Pla
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2023-05-09
Anticipated expiration: 2032-08-09

Abstract

The utility model relates to a non-stop detection device for a pressure gauge, which comprises two-position four-way reversing valves, two sections of branch pipelines, two pressure gauges and a flow standard device, wherein the two pressure gauges are respectively arranged on the two sections of branch pipelines; the two-position four-way reversing valve is provided with A, B, C, D four interfaces, wherein the interface A is communicated with the interface B and the interface C is communicated with the interface D in the first station, and the interface A is communicated with the interface C and the interface B is communicated with the interface D in the second station; the device comprises an upstream section of a pressure pipeline to be tested, an interface A of a first two-position four-way reversing valve, an interface B of the first two-position four-way reversing valve, an interface C of the second two-position four-way reversing valve, an interface D of the first two-position four-way reversing valve, an interface A of the second two-position four-way reversing valve, and a flow standard device. The device is favorable to carrying out on-the-spot non-stop detection to the manometer, detects convenient, and work efficiency is high.

Description

Non-stop detection device for pressure gauge

Technical Field

The utility model belongs to the technical field of detection, and particularly relates to a non-stop detection device for a pressure gauge.

Background

In the prior art, to detect the pressure gauge on the fluid conveying pipeline, the pressure gauge is often required to be disassembled in a shutdown or detected in a shutdown maintenance period of the whole machine, so that production is influenced, and a plurality of inconveniences are brought to the detection work of the pressure gauge. To overcome this problem, the existing solutions are generally to connect the branches in parallel on the pressure line to be measured, and then to install a spare pressure gauge, so as to realize one-to-one operation. Although the method reduces the influence on production, the pressure gauge still needs to be disassembled for off-machine inspection, so that the detection is inconvenient, time and labor are consumed, and the detection efficiency is low.

Disclosure of Invention

The utility model aims to provide a non-stop detection device for a pressure gauge, which is favorable for carrying out on-site non-stop detection on the pressure gauge, and has the advantages of convenience in detection and high working efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a manometer does not shut down detection device, includes two-position cross switching-over valves, two sections branch pipelines, two manometers and flow standard device, and two manometers are installed respectively on two sections branch pipelines; the two-position four-way reversing valve is provided with A, B, C, D interfaces, wherein the interface A is communicated with the interface B and the interface C is communicated with the interface D when the two-position four-way reversing valve is positioned at a first station, and the interface A is communicated with the interface C and the interface B is communicated with the interface D when the two-position four-way reversing valve is switched to a second station; the device comprises an upstream section of a pressure pipeline to be tested, an interface A of a first two-position four-way reversing valve, an interface B of the first two-position four-way reversing valve, an interface C of the second two-position four-way reversing valve, an interface D of the first two-position four-way reversing valve, an interface A of the second two-position four-way reversing valve, and a flow standard device.

Further, when detecting a first pressure gauge installed on a first branch pipeline, the first two-position four-way reversing valve is positioned at a second station, the second two-position four-way reversing valve is positioned at a first station, the first branch pipeline is communicated with the flow standard device, and the second branch pipeline is simultaneously communicated with an upstream section and a downstream section of the pressure pipeline to be detected; when the second pressure gauge arranged on the second branch pipeline is detected, the first two-position four-way reversing valve is positioned at a first station, the second two-position four-way reversing valve is positioned at a second station, the second branch pipeline is communicated with the flow standard device, and the first branch pipeline is simultaneously communicated with the upstream section and the downstream section of the pressure pipeline to be detected.

Further, the calibers of the four interfaces of the two-position four-way reversing valve are the same.

Further, the pressure pipeline to be measured is a gas pipeline, the flow standard device comprises a fan and a standard pressure gauge, an outlet of the fan is connected with a D interface of the first two-position four-way reversing valve or an A interface of the second two-position four-way reversing valve through a connecting pipeline, the standard pressure gauge is installed on the connecting pipeline, the A interface of the second two-position four-way reversing valve or the D interface of the first two-position four-way reversing valve is connected with an exhaust pipeline, and the exhaust pipeline is connected with the atmosphere.

Further, the pressure pipeline to be measured is a liquid pipeline, the flow standard device comprises a water pump, a water tank and a standard pressure gauge, an inlet of the water pump is connected with the water tank, an outlet of the water pump is connected with a D interface of the first two-position four-way reversing valve or an A interface of the second two-position four-way reversing valve through a connecting pipeline, the standard pressure gauge is installed on the connecting pipeline, an A interface of the second two-position four-way reversing valve or a D interface of the first two-position four-way reversing valve is connected with a drain pipe, and the drain pipe is connected to the water tank.

Further, the pipe diameter of the connecting pipeline is the same as the pipe diameters of the first branch pipeline and the second branch pipeline.

Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a manometer does not shut down detection device, the device can form fluid transportation and detect double loop, under the prerequisite of not tearing down the manometer, does not shut down on-line detection to the manometer at the production scene, detects conveniently, has avoided tearing down a large amount of workloads that the table was sent for inspection to bring, has improved work efficiency greatly. Therefore, the utility model has strong practicability and wide application prospect.

Drawings

Fig. 1 is a schematic view of a device structure according to a first embodiment of the present utility model.

Fig. 2 is a schematic view of the device in another working state according to the first embodiment of the present utility model.

Fig. 3 is a schematic diagram of a device structure according to a second embodiment of the present utility model.

In the figure: 1. a first two-position four-way reversing valve; 2. a second two-position four-way reversing valve; 3. a first branch line; 4. a second branch line; 5. a first pressure gauge; 6. a second pressure gauge; 7. an upstream section of the pressure line to be measured; 8. a downstream section of the pressure line to be measured; 9. a blower; 10. a standard pressure gauge; 11. a connecting pipeline; 12. an exhaust line; 13. a water pump; 14. a water tank; 15. a standard pressure gauge; 16. a connecting pipeline; 17. and (5) a water drain pipe.

Detailed Description

The utility model will be further described with reference to the accompanying drawings and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless defined otherwise, 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.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

As shown in fig. 1 and 2, the present embodiment provides a device for detecting a pressure gauge without stopping the operation of the machine, which is characterized by comprising two-position four-

way reversing valves

1 and 2, two sections of

branch pipelines

3 and 4, two

pressure gauges

5 and 6, and a flow standard device, wherein the two

pressure gauges

5 and 6 are respectively installed on the two sections of

branch pipelines

3 and 4; the two-position four-way reversing valve is provided with A, B, C, D interfaces, wherein the interface A is communicated with the interface B and the interface C is communicated with the interface D when the two-position four-way reversing valve is positioned at a first station, and the interface A is communicated with the interface C and the interface B is communicated with the interface D when the two-position four-way reversing valve is switched to a second station; the A interface of the first two-position four-way reversing valve 1 is connected with an upstream section 7 of a pressure pipeline to be detected, the B interface is connected with a first branch pipeline 3, the C interface is connected with a second branch pipeline 4, the B interface of the second two-position four-way reversing valve 2 is connected with the first branch pipeline 3, the C interface is connected with the second branch pipeline 4, the D interface is connected with a downstream section 8 of the pressure pipeline to be detected, and the D interface of the first two-position four-way reversing valve and the A interface of the second two-position four-way reversing valve are connected with a flow standard device.

In the first embodiment, the pressure pipeline to be measured is a gas pipeline, the flow standard device comprises a fan 9 and a standard pressure gauge 10, an outlet of the fan 9 is connected with a D interface of the first two-position four-way reversing valve 1 through a connecting pipeline 11, the standard pressure gauge 10 is installed on the connecting pipeline 11, an a interface of the second two-position four-way reversing valve 2 is connected with an exhaust pipeline 12, and the exhaust pipeline 12 is connected with the atmosphere. The calibers of the four interfaces of the two-position four-way reversing valve are the same, and the pipe diameters of the connecting pipeline are the same as those of the first branch pipeline and the second branch pipeline.

As shown in fig. 1, when the first pressure gauge 5 mounted on the first branch pipe 3 is detected, the first two-position four-way reversing valve 1 is in the second station and the second two-position four-way reversing valve 2 is in the first station, the first branch pipe 3 is communicated with the flow standard device, and the second branch pipe 4 is simultaneously communicated with the upstream section 7 and the downstream section 8 of the pressure pipe to be measured.

As shown in fig. 2, when the second pressure gauge 6 mounted on the second branch pipe 4 is detected, the first two-position four-way reversing valve 1 is in the first station and the second two-position four-way reversing valve 2 is in the second station, the second branch pipe 4 is communicated with the flow standard device, and the first branch pipe 3 is simultaneously communicated with the upstream section 7 and the downstream section 8 of the pressure pipe to be measured. The detection principle is the same as the above.

The working principle of the device will now be further described by taking the first pressure gauge 5 as an example.

During normal gas delivery, the blower 9 and standard pressure gauge 10 and are not mounted on the device. Before the detection work is carried out, the first two-position four-way reversing valve 1 is confirmed to be in the second station, the second two-position four-way reversing valve 2 is confirmed to be in the first station, and then a detection person installs the fan 9 and the standard pressure gauge 10 on the connecting pipeline 11. At this time, the gas in the upstream section of the pipe to be pressurized flows to the downstream section via the second branch pipe 4, and is pressurized by the second pressure gauge 6 on the second branch pipe 4, the operation of which is not affected. And the two-position four-way reversing valves isolate the first branch pipeline 3 from the pipeline to be tested, and the first branch pipeline 3 is communicated with the flow standard device to form a detection passage.

The fan 9 is started, air flow blown by the fan 9 flows through the connecting pipeline 11 and the first branch pipeline 3 with the same pipe diameter, and the first pressure gauge 5 on the first branch pipeline 3 is calibrated and detected through the standard pressure gauge 10 on the connecting pipeline 11.

In other embodiments, an installation hole for installing the standard pressure gauge 10 may be further formed in the first branch pipe 3, and the standard pressure gauge 10 is installed on the first branch pipe 3 instead of the connection pipe 11 during detection, so that the standard pressure gauge 10 and the first pressure gauge 5 are connected in series in the same first branch pipe 3, and calibration detection of the first pressure gauge 5 by the standard pressure gauge 10 may be achieved. And when the detection is not performed, blind holes are formed on the mounting hole plugs.

After the detection is finished, the fan 9 and the standard pressure gauge 10 are detached.

As shown in fig. 3, in a second embodiment, the pressure pipeline to be tested may also be a liquid pipeline, the flow standard device includes a water pump 13, a water tank 14 and a standard pressure gauge 15, an inlet of the water pump 13 is connected to the water tank 14, an outlet of the water pump 13 is connected to a D interface of the first two-position four-way reversing valve 1 through a connecting pipeline 16, the standard pressure gauge 15 is installed on the connecting pipeline 16, an a interface of the second two-position four-way reversing valve 2 is connected to a drain pipe 17, and the drain pipe 17 is connected to the water tank 14. The detection principle is the same as the above.

The above description is only a preferred embodiment of the present utility model, and is not intended to limit the utility model in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. The non-stop detection device for the pressure gauge is characterized by comprising two-position four-way reversing valves, two sections of branch pipelines, two pressure gauges and a flow standard device, wherein the two pressure gauges are respectively arranged on the two sections of branch pipelines; the two-position four-way reversing valve is provided with A, B, C, D interfaces, wherein the interface A is communicated with the interface B and the interface C is communicated with the interface D when the two-position four-way reversing valve is positioned at a first station, and the interface A is communicated with the interface C and the interface B is communicated with the interface D when the two-position four-way reversing valve is switched to a second station; the device comprises an upstream section of a pressure pipeline to be tested, an interface A of a first two-position four-way reversing valve, an interface B of the first two-position four-way reversing valve, an interface C of the second two-position four-way reversing valve, an interface D of the first two-position four-way reversing valve, an interface A of the second two-position four-way reversing valve, and a flow standard device.

2. The non-stop pressure gauge detection device according to claim 1, wherein when detecting a first pressure gauge installed on a first branch pipe, the first two-position four-way reversing valve is in a second station and the second two-position four-way reversing valve is in a first station, the first branch pipe is communicated with the flow standard device, and the second branch pipe is simultaneously communicated with an upstream section and a downstream section of the pressure pipe to be detected; when the second pressure gauge arranged on the second branch pipeline is detected, the first two-position four-way reversing valve is positioned at a first station, the second two-position four-way reversing valve is positioned at a second station, the second branch pipeline is communicated with the flow standard device, and the first branch pipeline is simultaneously communicated with the upstream section and the downstream section of the pressure pipeline to be detected.

3. The non-stop detection device for a pressure gauge according to claim 2, wherein the four ports of the two-position four-way reversing valve have the same caliber.

4. The non-stop detection device for the pressure gauge according to claim 1, wherein the pressure pipeline to be detected is a gas pipeline, the flow standard device comprises a fan and a standard pressure gauge, an outlet of the fan is connected with a D interface of a first two-position four-way reversing valve or an A interface of a second two-position four-way reversing valve through a connecting pipeline, the standard pressure gauge is installed on the connecting pipeline, the A interface of the second two-position four-way reversing valve or the D interface of the first two-position four-way reversing valve is connected with an exhaust pipeline, and the exhaust pipeline is connected with the atmosphere.

5. The non-stop detection device for the pressure gauge according to claim 1, wherein the pressure pipeline to be detected is a liquid pipeline, the flow standard device comprises a water pump, a water tank and a standard pressure gauge, an inlet of the water pump is connected with the water tank, an outlet of the water pump is connected with a D interface of a first two-position four-way reversing valve or an A interface of a second two-position four-way reversing valve through a connecting pipeline, the standard pressure gauge is installed on the connecting pipeline, an A interface of the second two-position four-way reversing valve or a D interface of the first two-position four-way reversing valve is connected with a drain pipe, and the drain pipe is connected to the water tank.

6. The non-stop detection device for pressure gauges according to claim 4 or 5, wherein the pipe diameter of the connecting pipe is the same as the pipe diameters of the first branch pipe and the second branch pipe.