Hydrogen single-path skid-mounted frame

Abstract

The utility model relates to the field of hydrogen storage and distribution, in particular to a hydrogen single-path skid-mounted frame which comprises a frame body, a main pipeline, a rear end pipeline and an emptying pipeline are installed on the frame body, and a stop valve, a needle valve, a first pressure gauge and a first-stage pressure reducing valve are sequentially installed on the main pipeline. The rear-end pipeline is connected with the first-stage pressure reducing valve, a second-stage pressure reducing valve, a ball valve, a pressure release valve, a flow control meter and a second pressure gauge are sequentially installed on the rear-end pipeline, the main pipeline and the rear-end pipeline are both connected with an emptying pipeline, and a one-way valve is installed on the emptying pipeline; an inlet of the main pipeline and an outlet of the rear-end pipeline are connected with purging pipelines; and angle valves are mounted on the purging pipelines. A nitrogen purging pipeline is additionally arranged, the cleanliness of gas in the pipeline can be kept, meanwhile, a pressure release valve is arranged, the first-stage pressure reducing valve and the second-stage pressure reducing valve can be prevented from being damaged, rear end valves can be prevented from being damaged by high-pressure gas, the gas can be exhausted into the atmosphere in time, and safety is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen storage and distribution field, concretely is a kind of hydrogen single-path pry dress frame. BACKGROUND

[0002] Hydrogen single-path pry dress frame is the structure for installing integrated equipment, mainly for the storage and distribution of hydrogen. Gas station is a kind of application place of hydrogen single-path pry dress frame, and the equipment usually carries case, gas discharge column, compressor, hydrogen storage tank and filling machine and other components.

[0003] Although the existing hydrogen single-path pry dress frame can install components for storing and distributing hydrogen, it cannot guarantee the cleanliness inside the hydrogen pipeline, which brings hidden troubles for subsequent use. CONTENT OF THE UTILITY MODEL

[0004] To achieve the above object, the utility model aims at providing a hydrogen single-path pry dress frame, which can solve the problems in the background art. The utility model provides the following technical solutions:

[0005] The utility model provides a kind of hydrogen single-path prying frame, including frame body, main pipeline, rear end pipeline and emptying pipeline are installed on frame body, cut-off valve, needle valve, first pressure gauge and primary pressure reducing valve are installed in proper order on main pipeline, rear end pipeline is connected with primary pressure reducing valve and rear end pipeline is installed with secondary pressure reducing valve, ball valve, pressure relief valve, flow control meter and second pressure gauge in proper order, main pipeline and rear end pipeline are connected with emptying pipeline and emptying pipeline is installed with one-way valve, the import of main pipeline and the export of rear end pipeline are connected with purging pipeline and purging pipeline is installed with angle valve, cut-off valve is used to control main pipeline gas path switch in the product, angle valve is used for nitrogen purging import and export and emptying valve, needle valve is used to control switch and facilitate pressure gauge replacement, first pressure gauge is used to show high-pressure end gas path pressure, primary pressure reducing valve is used to regulate and control internal pressure of main pipeline, to realize the output of stable flow, secondary pressure reducing valve is used for secondary pressure regulation, so that internal pressure of rear end pipeline is more stable, ball valve is convenient for replacement of later safety valve, pressure relief valve is automatically discharged outward when internal pressure of rear end pipeline reaches set pressure, flow control meter is used to control gas flow to reach equipment usage, second pressure gauge is used to show the gas pressure of rear end pipeline, one-way valve is used to prevent gas backflow, the working process of the product is as follows: first, cut-off valve can be opened, impure gas is discharged through emptying pipeline, then passes through primary pressure reduction, secondary pressure reduction and pressure stabilization, and flows to each gas-using point through pipeline to supply gas to equipment. When maintenance is needed, nitrogen can be used for purging, and the entire pipeline can be purged to avoid dangerous construction. The emptying process is as follows: connect nitrogen, purge and empty the entire pipeline, open the angle valve first, then slowly open the cut-off valve in sequence, and continue for 120-180S to completely drain the gas in the pipeline. Close the cut-off valve to complete the emptying. When used for the first time, confirm that all valves are in the closed state, all pipelines are correctly connected, introduce nitrogen from the nitrogen purging pipeline, open the cut-off valve and the angle valve in sequence (adjust the primary pressure reducing valve and the secondary pressure reducing valve to the appropriate pressure), use leak detection liquid to confirm that there is no leakage at the valve interface, close the angle valve after confirming that there is no leakage, open the emptying valve to empty the nitrogen in the pipeline, then close the emptying valve, and open the cut-off valve to use normally.

[0006] As a further scheme of the utility model: cut-off valve, primary pressure reducing valve, secondary pressure reducing valve, flow control meter and one-way valve are connected on frame body by means of loose joint welding, and have good connection performance and sealing performance, and good high-pressure resistance.

[0007] As a further scheme of the utility model: filter is further installed on front end pipeline, and the filter is connected with the primary pressure reducing valve, can filter large particles, and prolong the service life of the primary pressure reducing valve.

[0008] As a further scheme of the utility model: angle valve, first pressure gauge and second pressure gauge are installed on frame body by means of screw connection, and are not easy to fall off.

[0009] As a further scheme of the utility model: the filter is installed on the front end pipeline in a way of loose welding, which can ensure good connection firmness and excellent sealing performance.

[0010] As a further scheme of the utility model: the needle valve, the ball valve and the pressure relief valve are all connected on the frame body by a sleeve.

[0011] As a further scheme of the utility model: a flame arrester is further installed on the frame body, which can prevent the gas pipeline from burning and prevent the gas from backflowing.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The product adds a nitrogen purging pipeline, which is beneficial to keeping the gas cleanliness inside the pipeline, and is equipped with a pressure relief valve, which can prevent the primary pressure reducing valve and the secondary pressure reducing valve from being damaged, can avoid the rear valve from being damaged by high-pressure gas, can timely discharge the gas into the atmosphere, and can enhance the safety; the product can also manually perform the emptying and purging operation, and further enhances the use safety. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structure schematic view of the hydrogen single-path prying frame in the utility model embodiment.

[0015] In the figure: 1 - stop valve; 2 - angle valve; 3 - needle valve; 4 - first pressure gauge; 5 - filter; 6 - primary pressure reducing valve; 7 - secondary pressure reducing valve; 8 - ball valve; 9 - pressure relief valve; 10 - flow control meter; 11 - second pressure gauge; 12 - check valve; 13 - flame arrester, 14 - frame body. DETAILED DESCRIPTION

[0016] The technical scheme in the utility model embodiments will be described clearly and completely below in combination with the drawings of the utility model embodiments. Apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0017] The specific implementation of the utility model will be described in detail below in combination with specific embodiments.

[0018] Please refer to Figure 1The utility model discloses a kind of hydrogen single-path prying racks, including frame body 14, main pipeline is installed on frame body, rear end pipeline and emptying pipeline, stop valve 1 is sequentially installed on main pipeline, needle valve 3, first pressure gauge 4 and primary pressure reducing valve 6, rear end pipeline is connected with primary pressure reducing valve 6 and rear end pipeline is sequentially installed with secondary pressure reducing valve 7, ball valve 8, pressure relief valve 9, flow control meter 10 and second pressure gauge 11, main pipeline and rear end pipeline are connected with emptying pipeline and emptying pipeline is installed with one-way valve 12, the import of main pipeline and the export of rear end pipeline are connected with purging pipeline and purging pipeline is installed with angle valve 2, stop valve 1 in the product is used to control main pipeline gas path switch, angle valve 2 is used for nitrogen purging import and export and emptying valve, needle valve 3 is used to control switch and facilitate pressure gauge replacement, first pressure gauge 4 is used to show high-pressure end gas path pressure, primary pressure reducing valve 6 is used to regulate and control main pipeline internal pressure, to realize the output of stable flow, secondary pressure reducing valve 7 is used for secondary pressure regulation, so that rear end pipeline internal pressure is more stable, ball valve 8 facilitates the replacement of later safety valve, pressure relief valve 9 is in rear end pipeline pressure reaches set pressure, automatically bleeds outward, flow control meter 10 is used to control gas flow to reach equipment usage, second pressure gauge 11 is used to show the gas pressure of rear end pipeline, one-way valve 12 is used to prevent gas backflow, the working process of the product is as follows: first can open stop valve 1, pass through emptying pipeline, discharge impure gas, then pass through primary pressure reduction, secondary pressure reduction and pressure stabilization, pass through pipeline and flow to each gas point gas supply equipment.When needing to overhaul, nitrogen can be used to purge, and the whole pipeline is purged and emptied, to avoid dangerous construction. The emptying process is as follows: connect nitrogen, purge and empty the whole pipeline, first open angle valve 2, then sequentially slowly open stop valve 1, continue 120-180S, and the gas in the pipeline is completely discharged. First close stop valve 1, and complete emptying. When using for the first time, first confirm that all valves are in closed state, all pipelines are correctly connected, first introduce nitrogen from nitrogen purging pipeline, sequentially open stop valve 1 and angle valve 2 (primary pressure reducing valve 6 and secondary pressure reducing valve 7 are adjusted to appropriate pressure), use leak detection liquid to confirm that there is no leakage at valve interface, after confirming that there is no leakage, close angle valve 2, open emptying valve, discharge nitrogen in the pipeline, then close emptying valve, open stop valve 1, and normal use.

[0019] In one embodiment of the utility model, stop valve 1, primary pressure reducing valve 6, secondary pressure reducing valve 7, flow control meter 10 and one-way valve 12 are connected on frame body 14 in loose welding mode, and good connection performance and sealing property are good, and good high-pressure resistance.

[0020] In one embodiment of the utility model, filter 5 is further installed on front end pipeline, filter 5 is connected with primary pressure reducing valve 6, can filter large particles, and prolong the service life of primary pressure reducing valve 6.

[0021] In one embodiment of the utility model, the angle valve 2, the first pressure gauge 4 and the second pressure gauge 11 are all installed on the frame body 14 in a threaded connection mode, and are not easy to fall off.

[0022] In one embodiment of the utility model, the filter 5 is installed on the front-end pipeline in a loose joint welding mode, and can guarantee good connection firmness and excellent sealing performance.

[0023] In one embodiment of the utility model, the needle valve 3, the ball valve 8 and the pressure relief valve 9 are all connected to the frame body in a clamping sleeve mode, are not easy to fall off, have good sealing performance, and further, the ball valve 8 is a manual ball valve, the components are easy to purchase, and the cost is low.

[0024] In one embodiment of the utility model, the frame body 14 is further provided with a flame arrester 13, can prevent internal combustion of the gas pipeline, prevent gas backflow, and the flame arrester 13 is connected to the frame body 14 in a loose joint welding mode, has good connection performance and sealing performance, and has good high-pressure resistance.

[0025] In one embodiment of the utility model, the flow control meter 10 is a mass flow control meter, and has high measurement accuracy.

[0026] It should be noted that, in the utility model, unless otherwise clearly specified and limited, the terms "fixed", "provided" and the like should be understood in a broad sense, for example, can be welded connection, can be bolted connection, or can be integrated; can be mechanical connection, can be electrical connection; can be directly connected, can be indirectly connected through an intermediate medium, can be internal communication of two elements or mutual action relationship of two elements, unless otherwise clearly limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] In addition, it should be understood that, although the present specification is described according to the embodiments, not every embodiment contains only one independent technical scheme, and the description mode of the specification is only for the sake of clarity, and the person skilled in the art should understand the specification as a whole, and the technical scheme in each embodiment can also be appropriately combined to form other embodiments that can be understood by the person skilled in the art.

Claims

1. A hydrogen single-path skid frame comprising a frame body, a main pipe, a rear-end pipe and a vent pipe mounted on the frame body, a stop valve, a needle valve, a first pressure gauge and a first pressure reducing valve mounted on the main pipe in sequence, characterized in that, The rear-end pipeline is connected with the primary pressure reducing valve, and the secondary pressure reducing valve, the ball valve, the pressure relief valve, the flow control meter and the second pressure gauge are sequentially installed on the rear-end pipeline; the main pipeline and the rear-end pipeline are both connected with the emptying pipeline, and the one-way valve is installed on the emptying pipeline; the inlet of the main pipeline and the outlet of the rear-end pipeline are both connected with the purging pipeline, and the angle valve is installed on the purging pipeline.

2. The single hydrogen gas skid of claim 1, wherein, The stop valve, the primary pressure reducing valve, the secondary pressure reducing valve, the flow control meter and the one-way valve are all connected on the frame body in a loose welding mode.

3. The single hydrogen gas skid of claim 1, wherein, A filter is further installed on the rear-end pipeline, and the filter is connected with the primary pressure reducing valve.

4. The single hydrogen gas skid of claim 3, wherein, The filter is installed on the front-end pipeline in a loose welding mode.

5. The single hydrogen gas skid of claim 1 or 2, wherein, A flame arrester is further installed on the frame body.

Images