Hydrogen pipeline convenient for metering air release amount

Abstract

The utility model discloses a hydrogen pipeline convenient for metering the air release amount. The hydrogen pipeline comprises a PSA (Pressure Swing Adsorption) device, an air introduction pump, a main air pipe, an FT control valve, a throttling device, an air supply guide pipe, an auxiliary air pipe, an emptying pump and a throttling air pipe, according to the utility model, through the arrangement of the throttling device, when a small amount of hydrogen flows into the valve body from the gas outlet pipe, the control motor is started to drive the valve core to rotate and the position of the circulation port of the valve core to rotate, so that the hydrogen is blocked, and the hydrogen is prevented from flowing out; hydrogen which is not cut off is limited, and the hydrogen is guided into the backflow gas pipe to be recycled, so that overflowing hydrogen is cut off by starting a throttling device, the situation that part of hydrogen still flows to customers after a valve is closed is effectively prevented, the situation that hydrogen still overflows after the valve is closed in traditional equipment is solved, and the service life of the equipment is prolonged. And great economic loss is brought to a gas supply party, so that divergence is easy to generate.

Description

Technical Field

[0001] The utility model relates to the relevant field of hydrogen production by pressure swing adsorption, in particular to a hydrogen pipeline which is convenient for measuring the amount of discharged gas. Background Art

[0002] Since the venting of the PSA product hydrogen pipeline is located behind the flow meter, the accumulated volume of the flow meter includes both the venting volume and the amount of hydrogen sent to Huian. As a result, the amount of hydrogen sent to Huian cannot be accurately measured by the existing flow meter, which in turn caused a disagreement between the two companies.

[0003] Existing gas flow measurement technology, during use, mostly uses induction equipment to measure the flow and metering of gas flow. Although it has the advantage of low manufacturing cost, there is a general problem of incomplete throttling, resulting in gas still flowing out of the detector after the valve is closed. According to the measurement of the accumulated outflow gas, it brings considerable economic losses to the gas supplier, which in turn causes disputes. Utility Model Content

[0004] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a hydrogen pipeline which is convenient for measuring the amount of discharged gas.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a hydrogen pipeline convenient for measuring the amount of discharged air, comprising a PSA device, an air induction pump, a main air pipe, an FT control valve, a throttling device, an air supply conduit, an auxiliary air pipe, a venting pump, and a throttling air pipe, wherein the top of the PSA device is equipped with an air induction pump, the main air pipe is arranged at the top right end of the PSA device, the outer side of the main air pipe is equipped with an FT control valve, the throttling device is arranged at the right end of the main air pipe, the right end of the throttling device is equipped with an air supply conduit, the outer side of the auxiliary air pipe is equipped with another set of FT control valves, the venting pump is fixed to the bottom of the auxiliary air pipe, and the throttling device is arranged at the right end of the main air pipe. The flow air pipe is connected to the bottom of the main air pipe, and the throttling air pipe is connected to the bottom of the auxiliary air pipe. The throttling device includes a valve body, an air inlet pipe, a control motor, a valve core, an air outlet pipe, a flow limiter, a return air pipe, an electric control valve, and a gas detector. The air inlet pipe is installed at the left end of the valve body, the control motor is fixed to the front end of the valve body, the control motor is connected to the front end of the valve core by a coupling, the valve core is connected to the inside of the valve body for rotation, the air outlet pipe is arranged at the right end of the valve body, a flow limiter is arranged inside the air outlet pipe, the return air pipe is connected to the bottom of the air outlet pipe, and the gas detector is fixed to the top of the air outlet pipe.

[0006] As a further solution of the utility model, the flow limiter includes an installation frame, a flow limiting block, a flow limiting spring, and a fixed block. A flow limiting block is arranged at the bottom of the installation frame, the flow limiting block is fixed to the bottom of the flow limiting spring, the flow limiting spring is installed inside the fixed block, and the fixed block is fixed to the right end of the outlet pipe.

[0007] As a further solution of the utility model, the air inlet pipe and the air outlet pipe are respectively arranged at the left and right ends of the valve body.

[0008] As a further solution of the utility model, the valve core is fitted with the inner size of the valve body.

[0009] As a further solution of the utility model, the control motor and the valve core are arranged on the valve body at the same level.

[0010] As a further solution of the utility model, the flow limiting block is in an arc shape as a whole, so as to ensure that the flow limiting block limits the gas and prevents gas leakage.

[0011] As a further solution of the utility model, the current limiting spring is provided with two groups, and the two groups of current limiting springs are both arranged on the top of the current limiting block.

[0012] As a further solution of the present invention, the gas detector can be replaced with a gas detector of model XYZ.

[0013] As a further solution of the utility model, the current limiting block and the fixed block are arranged in parallel at the upper and lower ends of the current limiting spring, ensuring that the current limiting spring can support the current limiting block with the assistance of the fixed block.

[0014] Compared with the prior art, the utility model provides a hydrogen pipeline that is convenient for measuring the amount of gas released, and has the following beneficial effects:

[0015] 1. In the utility model, a throttling device is provided, and a small amount of hydrogen flows into the valve body from the outlet pipe. When the control motor is started to drive the valve core to rotate, the position of the valve core flow port is rotated, which blocks the hydrogen and prevents the hydrogen from flowing out. After the valve core cuts off the gas, a flow limiter is provided to limit the hydrogen that is not cut off, and the hydrogen introduced into the return pipe is recovered internally, thereby achieving the effect of cutting off the overflowed hydrogen by starting the throttling device, effectively preventing the situation that part of the hydrogen still flows to the customer after the valve is closed, thereby solving the problem that in traditional equipment, hydrogen still overflows after the valve is closed, causing considerable economic losses to the gas supplier, and thus easily causing disagreements.

[0016] 2. In the utility model, a flow limiter is provided, and the flow limiting spring pushes the fixed block to move downward and blocks the gas outlet pipe, so that the gas outlet pipe cannot provide hydrogen to the gas supply duct, causing a small amount of hydrogen to be retained inside the gas outlet pipe, and the gas is recovered from the return gas pipe, thereby achieving the effect of limiting the hydrogen that is not cut off under the action of the flow limiter and recovering the hydrogen introduced into the return gas pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is the operation flow structure diagram of the utility model;

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the throttling device of the utility model;

[0020] Figure 4 It is a schematic diagram of the internal structure of the throttling device of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the current limiter of the utility model.

[0022] Among them: PSA device-1, air induction pump-2, main air pipe-3, FT control valve-4, throttling device-5, air supply duct-6, auxiliary air pipe-7, vent pump-8, throttling air pipe-9, valve body-51, air inlet pipe-52, control motor-53, valve core-54, air outlet pipe-55, flow limiter-56, return air pipe-57, electric control valve-58, gas detector-59, installation frame-561, flow limiting block-562, flow limiting spring-563, fixing block-564. DETAILED DESCRIPTION

[0023] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0024] See also Figure 1 and Figure 2 , in the embodiment of the utility model:

[0025] A hydrogen pipeline for conveniently measuring the amount of discharged air comprises a PSA device 1, an air induction pump 2, a main air pipe 3, an FT control valve 4, a throttling device 5, an air supply conduit 6, an auxiliary air pipe 7, a venting pump 8 and a throttling air pipe 9. The air induction pump 2 is installed on the top of the PSA device 1, the main air pipe 3 is arranged at the top right end of the PSA device 1, the FT control valve 4 is installed on the outside of the main air pipe 3, the throttling device 5 is arranged at the right end of the main air pipe 3, the air supply conduit 6 is installed on the right end of the throttling device 5, another group of FT control valves 4 are installed on the outside of the auxiliary air pipe 7, the venting pump 8 is fixed to the bottom of the auxiliary air pipe 7, the throttling air pipe 9 is communicated with the bottom of the main air pipe 3, and the throttling air pipe 9 is connected to the bottom of the auxiliary air pipe 7.

[0026] See 3 and Figure 4 , in the embodiment of the utility model:

[0027] The throttling device 5 includes a valve body 51, an air inlet pipe 52, a control motor 53, a valve core 54, an air outlet pipe 55, a flow restrictor 56, a return air pipe 57, an electric control valve 58, and a gas detector 59. The air inlet pipe 52 is installed at the left end of the valve body 51, the control motor 53 is fixed to the front end of the valve body 51, the control motor 53 is connected to the front end of the valve core 54 by a coupling, the valve core 54 is connected to the inside of the valve body 51, and the air outlet pipe 55 is arranged on the right end of the valve body 51. At the end, a flow restrictor 56 is set inside the outlet pipe 55, the return pipe 57 is connected to the bottom of the outlet pipe 55, the gas detector 59 is fixed to the top of the outlet pipe 55, the inlet pipe 52 and the outlet pipe 55 are respectively set at the left and right ends of the valve body 51, the valve core 54 is fitted with the internal size of the valve body 51, the control motor 53 and the valve core 54 are set on the valve body 51 at the same level, and the gas detector 59 can be replaced with a gas detector with model XYZ.

[0028] Please refer to 5, in the embodiment of the present utility model:

[0029] The current limiter 56 includes an installation frame 561, a current limiting block 562, a current limiting spring 563, and a fixed block 564. The current limiting block 562 is arranged at the bottom of the installation frame 561, and the current limiting block 562 is fixed to the bottom of the current limiting spring 563. The current limiting spring 563 is installed inside the fixed block 564, and the fixed block 564 is fixed to the right end of the outlet pipe 55. The current limiting block 562 is arc-shaped as a whole, ensuring that the current limiting block 562 limits the gas to prevent gas leakage. There are two groups of current limiting springs 563, and the two groups of current limiting springs 563 are both arranged at the top of the current limiting block 562. The current limiting block 562 and the fixed block 564 are arranged in parallel at the upper and lower ends of the current limiting spring 563, ensuring that the current limiting spring 563 can support the current limiting block 562 with the assistance of the fixed block 564.

[0030] refer to Figure 1-Figure 5When in use, the gas reaction is introduced into the interior of the PSA device 1 by starting the air induction pump 2, and the gas reacts with each other inside the PSA device 1, thereby generating hydrogen that flows into the interior of the main gas pipe 3, and then the FT control valve 4 disposed on the outside of the main gas pipe 3 is loosened, and the FT control valve 4 disposed on the outside of the auxiliary gas pipe 7 is manually opened, and the venting pump 8 is started to squeeze the hydrogen, thereby improving the purity of the hydrogen, and then the purified hydrogen is introduced into the interior of the throttling device 5 through the throttling gas pipe 9, ensuring that the throttling device 5 can provide gas to the gas supply conduit 6, so that the gas supply conduit 6 can provide hydrogen to the customer, and in this process, the gas detector 59 disposed inside the throttling device 5 can record and store the outflowing hydrogen;

[0031] When it is necessary to stop delivering hydrogen, all FT control valves 4 are closed. Of course, a small amount of hydrogen will flow into the valve body 51 from the outlet pipe 55. When the control motor 53 is started to drive the valve core 54 to rotate, the position of the flow port of the valve core 54 rotates, which blocks the hydrogen and prevents the hydrogen from flowing out.

[0032] After the valve core 54 cuts off the gas, it moves downward by pushing the fixed block 564 through the flow limiting spring 563 and blocks the gas outlet pipe 55, so that the gas outlet pipe 55 cannot provide hydrogen to the gas supply duct 6, causing a small amount of hydrogen to be retained inside the gas outlet pipe 55, and the gas is recovered from the reflux gas pipe 57. Then, under the action of the flow limiter 56, the hydrogen that is not cut off is limited and is introduced into the reflux gas pipe 57 for recovery, thereby achieving the goal of starting the throttling device 5 to cut off the overflowing hydrogen, effectively preventing the situation that some hydrogen still flows to the customer after the valve is closed, thereby solving the problem that in traditional equipment, hydrogen still overflows after the valve is closed, causing considerable economic losses to the gas supplier and easily causing disagreements.

[0033] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

[0034] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0035] The above are only preferred examples of the present invention and are not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hydrogen pipeline for conveniently measuring the amount of discharged gas, comprising a PSA device (1), an air induction pump (2), a main air pipe (3), an FT control valve (4), a throttling device (5), an air supply conduit (6), an auxiliary air pipe (7), an air discharge pump (8), and a throttling air pipe (9), wherein the air induction pump (2) is installed on the top of the PSA device (1), the main air pipe (3) is arranged at the right end of the top of the PSA device (1), the FT control valve (4) is installed on the outside of the main air pipe (3), the throttling device (5) is arranged at the right end of the main air pipe (3), the air supply conduit (6) is installed on the right end of the throttling device (5), another set of FT control valves (4) is installed on the outside of the auxiliary air pipe (7), the air discharge pump (8) is fixed to the bottom of the auxiliary air pipe (7), the throttling air pipe (9) is connected to the bottom of the main air pipe (3), and the throttling air pipe (9) is connected to the bottom of the auxiliary air pipe (7); Features: The throttling device (5) comprises a valve body (51), an air inlet pipe (52), a control motor (53), a valve core (54), an air outlet pipe (55), a flow restrictor (56), a return air pipe (57), an electric control valve (58), and a gas detector (59). The air inlet pipe (52) is installed at the left end of the valve body (51). The control motor (53) is fixed to the front end of the valve body (51). The control motor (53) is connected to the front end of the valve core (54) by a coupling. The valve core (54) is connected to the inside of the valve body (51) in a rotational manner. The air outlet pipe (55) is arranged at the right end of the valve body (51). The flow restrictor (56) is arranged inside the air outlet pipe (55). The return air pipe (57) is connected to the bottom of the air outlet pipe (55). The gas detector (59) is fixed to the top of the air outlet pipe (55).

2. A hydrogen pipeline for conveniently measuring the amount of discharged gas according to claim 1, characterized in that: The flow limiter (56) comprises a mounting frame (561), a flow limiting block (562), a flow limiting spring (563), and a fixing block (564); a flow limiting block (562) is arranged at the bottom of the mounting frame (561); the flow limiting block (562) is fixed to the bottom of the flow limiting spring (563); the flow limiting spring (563) is installed inside the fixing block (564); and the fixing block (564) is fixed to the right end of the air outlet pipe (55).

3. A hydrogen pipeline for conveniently measuring the amount of discharged gas according to claim 1, characterized in that: The air inlet pipe (52) and the air outlet pipe (55) are respectively arranged at the left and right ends of the valve body (51).

4. A hydrogen pipeline for conveniently measuring the amount of discharged gas according to claim 1, characterized in that: The valve core (54) is closely matched to the inner size of the valve body (51).

5. A hydrogen pipeline for conveniently measuring the amount of discharged gas according to claim 1, characterized in that: The control motor (53) and the valve core (54) are arranged on the valve body (51) at the same level.

6. A hydrogen pipeline for conveniently measuring the amount of discharged gas according to claim 2, characterized in that: The current limiting block (562) is in an arc shape as a whole.

7. A hydrogen pipeline for conveniently measuring the amount of discharged gas according to claim 2, characterized in that: The current limiting springs (563) are provided in two groups, and the two groups of current limiting springs (563) are both arranged on the top of the current limiting block (562).

8. A hydrogen pipeline for conveniently measuring the amount of discharged gas according to claim 2, characterized in that: The current limiting block (562) and the fixing block (564) are arranged in parallel at the upper and lower ends of the current limiting spring (563).

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