CN215142981U - Purging device for hydrogen-involved pipe valve test pipeline - Google Patents

Abstract

The utility model discloses a sweep device for wading hydrogen pipe valve member test tube way, including sweep the air supply, be arranged in to corresponding main line and test tube way put off the pipeline that sweeps of sweeping gas, sweep the pipeline and include by the interface F that sweeps that corresponding pipeline connected gradually, pneumatic valve XV103, check valve CV101, sweep the air supply that interface F corresponds with the connection. The utility model discloses simple structure, practicality, use cost is low, can in time effectual purge out test pipeline inside remain hydrogen and other impurity to eliminate the potential safety hazard, and increase accuracy, the reliability of test result.

Description

Purging device for hydrogen-involved pipe valve test pipeline

Technical Field

The utility model relates to a new forms of energy pipe valve member detects technical field, concretely relates to a device that sweeps for wades hydrogen pipe valve member test pipeline.

Background

With the increasing population base and the rapid improvement of living standard, the consumption of non-renewable resources such as fossil fuel, coal, natural gas and the like is increasing day by day, thus leading to the increasing pollution of the natural environment. Currently, it is urgent to search and develop sustainable and clean energy technology. The hydrogen energy is a new energy which is abundant, inexhaustible and can be developed at present; hydrogen is an ideal clean energy carrier and is a new clean energy which is recognized by the world and is most hopeful to be demanded by human in the 21 st century. The development and application of hydrogen energy are greatly eagerly hoped for; based on this, various devices and derived products such as a hydrogen station, a hydrogen energy vehicle, a hydrogen fuel cell, and the like have come into play.

However, due to the physical and chemical properties of hydrogen and the flammable and explosive properties of high-pressure hydrogen medium, strict technical requirements are imposed on the safety, stability, connection sealing property, service life and other indexes of the hydrogen pipe-like valve. Therefore, at present, various hydrogen-related equipment manufacturers often use professional hydrogen-related pipe valve detection devices to perform various specialized tests or calibrations for meeting the requirements of various hydrogen-related pipe valves on safety, multiple times and repeated use. The performance detection equipment for the valve member of the hydrogen-related pipe has the following defects:

residual hydrogen substances and impurities in a test or calibration pipeline cannot be timely and effectively removed, on one hand, potential safety hazards are generated due to the flammability and the explosiveness of hydrogen, on the other hand, the existence of the residues can increase test or calibration errors, and the test or calibration result is unreliable.

Disclosure of Invention

An object of the utility model is to provide a device that sweeps for wading hydrogen pipe valve spare test pipeline to solve the problem that hydrogen can pipe valve spare test system lack effective, reliable clear away the device of remaining hydrogen and impurity.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the design is a purging device for a hydrogen-involved pipe valve testing pipeline, which comprises a purging gas source, and a purging pipeline for delivering purging gas to a corresponding main pipeline (used for providing a stable hydrogen flow) and a testing pipeline (used for testing, adjusting and the like of a pipe valve), wherein the purging pipeline comprises a purging interface F pneumatic valve XV103 and a one-way valve CV101 which are sequentially connected through a corresponding pipeline, and the purging interface F is used for connecting the purging gas source.

And the pneumatic valve XV103 is connected in parallel with a corresponding bypass branch, and a corresponding stop valve HNV105 is arranged in the bypass branch.

And the pneumatic actuating mechanisms of the pneumatic valves XV103 are respectively communicated with corresponding instrument air sources through corresponding solenoid valves SV103 and pneumatic triplet pieces so as to realize the opening and closing control of the valves of the pneumatic valves XV 103.

The automatic purging and replacing device further comprises a PLC control unit, the PLC control unit comprises a PLC controller, an analog input module AI, an analog output module AO, a switch power supply ZD and an input/output terminal, and the PLC controller controls the opening and closing of the electromagnetic valve SV103 according to a set value or an input instruction.

The purging gas source is a compressed nitrogen source.

Compared with the prior art, the utility model discloses a main beneficial technological effect lies in:

1. residual hydrogen, impurities and wastes in the test pipeline can be timely and effectively blown off by using the device, and potential safety hazards are eliminated so as to improve the accuracy and reliability of test results.

2. The utility model discloses sweep device simple structure, easily make, and use the maintenance cost low.

Drawings

Fig. 1 is a schematic diagram of a system for combining a purging replacement pipeline with a hydrogen-involved valve testing pipeline of the purging device of the present invention.

Fig. 2 is the structure diagram of the purging replacement pipeline combined with the hydrogen-involved valve testing pipeline of the purging device of the present invention.

Fig. 3 is a control schematic diagram of the purging device of the present invention.

In the above figures, 1 is a filter, 2 is an air-operated valve XV101, 3 is an air-operated valve XV102, 4 is an air-operated valve XV103, 5 is an automatic pressure regulating valve FV101, 6 is a check valve CV101, 7 is a pressure transmitter PT101, 8 is a pressure transmitter PT102, 9, 10, 11, 12, 13 are stop valves HNV101, HNV102, HNV103, HNV104, HNV105, 14 are pressure gauges PI101, 15 are pressure gauges PI101, 16, 17, 18, 19, 20 are solenoid valves SV101, SV102, SV103, SV104, SV105, 21 are pneumatic triplets, 22 is a quick connector, 23 is a ferrule adapter, 24 is a test interface, 25 is a three-way valve block, 26 is a right-angle valve block, 27 is a three-way valve block, 28 is a three-way valve block, 29 is a four-way valve block, 30 is an adapter, 31, 32 is a steel pipe, 33 is a polyurethane air pipe, 34 is a stand, 35 is a mounting stand, 36 is a control box, 37 is a hydrogen gas inlet panel, b is a diffusion port, C is a valve test connection outlet, D is a valve test connection inlet, and F is a nitrogen purging interface.

Detailed Description

The following embodiments are only intended to illustrate the present invention in detail, and do not limit the scope of the present invention in any way.

Example (b): a sweep replacement device for involving hydrogen pipe valve member test gas circuit structure, refer to fig. 1-3, mainly include:

the device comprises a purging gas source, a PLC (programmable logic controller) control unit and a purging pipeline, wherein the purging pipeline is used for delivering purging gas to a corresponding main pipeline and a corresponding testing pipeline, the purging pipeline comprises a nitrogen purging interface F, a pneumatic valve (XV 103) 4 and a one-way valve (CV 101) 6 which are sequentially connected through corresponding pipelines, and the nitrogen purging interface F is used for being connected with the corresponding purging gas source; and the pneumatic valve (XV 103) 4 is connected in parallel with a corresponding bypass branch, and a corresponding stop valve (HNV 105) 13 is arranged in the bypass branch.

And a pneumatic actuating mechanism of the pneumatic valve (XV 103) 4 is communicated with a corresponding instrument air source through a corresponding solenoid valve (SV 103) 18 and a pneumatic triplet piece so as to realize the opening and closing control of the valve of the pneumatic valve (XV 103) 4.

The PLC control unit comprises a PLC controller, an analog input module AI, an analog output module AO, a switch power supply ZD and an input/output terminal (comprising a touch screen and an emergency stop button), and the PLC controller controls the opening and closing of the electromagnetic valves (SV 102) 17 and (SV 103) 18 according to a set value or an input instruction, which is shown in figure 3.

Referring to fig. 1 and 2, the main pipeline comprises a hydrogen inlet a, a filter (F101) 1, an automatic pressure regulating valve (FV 101) 5, an air-operated valve (XV101)2, a pressure gauge (PI 101) 14, a pressure transmitter (PT 101) 7, an air-operated valve (XV102)3, and a bleeding port B for connecting a corresponding centralized bleeding pipeline, which are connected in sequence by corresponding pipelines, wherein the hydrogen inlet a is used for connecting a corresponding hydrogen source; the air-operated valve (XV101)2 and the air-operated valve (XV102)3 are respectively connected in parallel with corresponding bypass branches, and corresponding stop valves (HNV 103, HNV 104) 11, 12 are arranged in each bypass branch; if the opening functions of the air-operated valve (XV101)2 and the air-operated valve (XV102)3 are invalid, the stop valve (HNV 103) 11 is manually opened, so that the bypass branch of the air-operated valve (XV101)2 can be opened; similarly, the stop valve (HNV 104) 12 is manually opened, so that the bypass branch of the pneumatic valve (XV102)3 can be opened, and the manual test operation process can be realized.

The pneumatic actuators of the pneumatic valve XV101, the pneumatic valve XV102 and the automatic pressure regulating valve FV101 are respectively communicated with the corresponding instrument air source through the corresponding solenoid valves (SV 101, SV102 and SV 104) 16, 17 and 19 and the pneumatic triplet 21, so as to realize the opening and closing control of the corresponding pneumatic valve and the automatic pressure regulating valve.

Hydrogen enters the inlet end of a main pipeline from a hydrogen inlet A, passes through a filter (F101) 1, a solenoid valve (SV 104) 19 is electrified, an instrument air source enters a pneumatic actuating mechanism of an automatic pressure regulating valve (FV 101) 5 through a pneumatic triple piece 21, the valve of the automatic pressure regulating valve 5 is opened, and the pressure of the hydrogen is regulated to a set pressure; the electromagnetic valve (SV 101) 16 is electrified, an instrument air source enters the pneumatic actuating mechanism of the pneumatic valve (XV101)2 through the pneumatic triple piece 21, the valve of the pneumatic valve 2 is opened, and hydrogen flows through the pressure gauge PI101 and the pressure transmitter PT 101.

The electromagnetic valve (SV 101) 16 is powered off, the valve is closed, the air source of the branch instrument is cut off, and the valve of the pneumatic valve (XV101)2 is closed; the solenoid valve (SV 102) 17 is electrified, the instrument air source enters the pneumatic actuator of the pneumatic valve (XV102)3 through the pneumatic triplet 21, the valve of the pneumatic valve 3 is opened, the hydrogen flows through the pneumatic valve 3 and the 'diffusing port B', is discharged out of the main pipeline, enters the centralized diffusing pipeline, and the pressure of the main pipeline is released.

Referring to fig. 1 and 2, the valve test pipeline is connected into the main pipeline in parallel with a pneumatic valve (XV102)3, and comprises a pressure gauge, a pressure transmitter mounting branch and a manual bleeding branch;

the pressure gauge and the pressure transmitter mounting branch are mainly composed of a reducing three-way valve block, a front end stop valve (HNV 101) 9, a pressure gauge (PI 102) 15, a pressure transmitter (PT 102) 8, a connecting joint at a valve test connecting outlet C, a 3/8' steel pipe and other pipe valve parts which are connected by corresponding pipelines; the installation branch is connected with the main pipeline, and the valve test connection outlet C is connected with the inlet of the valve to be tested. The stop valve (HNV 101) 9 is opened manually, and hydrogen flows through the pressure gauge (PI 102) 15 and the pressure transmitter (PT 102) 8 from the main pipeline.

The manual diffusing branch mainly comprises pipe valve pieces such as a reducing three-way valve block, a rear end stop valve (HNV 102) 10, a adapter at a valve testing connection inlet D and the like; the manual diffusing branch is positioned between the valve testing connection inlet D and the diffusing port B; the valve test connection inlet D is connected with the outlet of the valve to be tested, and the diffusing port B is connected with the centralized diffusing pipeline. After the tested valve is tested, the stop valve (HNV 102) 10 is opened, hydrogen flows through the manual diffusing branch and enters the diffusing port B, so that the hydrogen medium in the high-pressure test enters the centralized diffusing pipeline, and the pressure relief function of the valve testing pipeline is realized.

The main operation and use methods of the purging and replacing device are as follows:

(1) before testing or debugging the pipe valve, the diffusing port B is communicated with the corresponding centralized diffusing pipeline, and the purging inlet F is communicated with the corresponding purging gas source;

(2) if hydrogen exists in the main pipeline before nitrogen gas is blown and scavenged (the hydrogen pressure is more than or equal to 0.2 MPa), firstly, an electromagnetic valve (SV 102) 17 of an electromagnetic valve is required to be opened for electrifying, an instrument air source enters a pneumatic valve XV102 pneumatic actuating mechanism through a pneumatic triple piece F.R.V101, the pneumatic valve XV102 is opened, and the hydrogen of the main pipeline flows to a centralized diffusion pipeline; when the pressure of the hydrogen in the main pipeline is reduced to 0.2MPa, the electromagnetic valve SV102 is powered off, the pneumatic valve XV102 is closed to realize the automatic release of the hydrogen in the main pipeline, and then the execution actions of the following (3) and (4) can be sequentially executed;

(3) if hydrogen does not exist in the main pipeline before nitrogen gas is blown, the electromagnetic valve SV103 is electrified, an instrument air source enters the pneumatic actuating mechanism of the pneumatic valve XV103 through a pneumatic triple piece F.R.V101, the valve of the pneumatic valve XV103 is opened, nitrogen flows through the one-way valve CV101 to enter the main pipeline, when the nitrogen pressure is increased to 0.8MPa, the electromagnetic valve SV102 is electrified (the electrifying duration is 5-10 s), the instrument air source enters the pneumatic actuating mechanism of the pneumatic valve XV102 through the pneumatic triple piece F.R.V101, the valve of the pneumatic valve XV102 is opened, and at the moment, the nitrogen is discharged into a centralized diffusing pipeline;

(4) the electromagnetic valve SV102 is powered off, and the pneumatic valve XV102 is closed; repeating the above actions for 3 times, namely realizing nitrogen purging and replacement of the whole pipeline system by nitrogen.

The present invention has been described in detail with reference to the accompanying drawings and embodiments, but those skilled in the art will understand that various specific parameters in the above embodiments can be changed or equivalent substitutions can be made on related parts, structures and materials without departing from the scope of the present invention, so as to form a plurality of specific embodiments, which are common variations of the present invention and will not be described in detail herein.

Claims (5)

1. The purging device for the hydrogen-involved pipe valve member test pipeline comprises a purging gas source and is characterized by further comprising a purging pipeline for pushing purging gas into a corresponding main pipeline and a corresponding test pipeline, wherein the purging pipeline comprises a purging interface F, a pneumatic valve XV103 and a one-way valve CV101 which are sequentially connected through corresponding pipelines, and the purging interface F is connected with the purging gas source.

2. A purging device for hydrogen-related valve element test lines according to claim 1, characterized in that the pneumatic valve XV103 is connected in parallel with a corresponding bypass branch, and a corresponding stop valve HNV105 is arranged in the bypass branch.

3. The purging device for hydrogen-involved valve element test pipelines according to claim 1, wherein the pneumatic actuator of the pneumatic valve XV103 is connected to the corresponding instrument air source through the corresponding solenoid valve, SV103 and pneumatic triplet, so as to realize the opening and closing control of the pneumatic valve XV 103.

4. The purging device for the hydrogen-involved pipe valve test pipeline according to claim 3, further comprising a PLC control unit, wherein the PLC control unit comprises a PLC controller, an analog input module AI, an analog output module AO, a switch power supply ZD and an input/output terminal, and the PLC controller controls the opening and closing of the electromagnetic valve SV103 according to a set value or an input instruction.

5. The purging device for hydrogen-related valve element test lines as claimed in claim 1, wherein the purging gas source is a compressed nitrogen gas source.

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