Hydrogen nozzle

Abstract

The invention relates to the technical field of hydrogen nozzles, in particular to a hydrogen nozzle which comprises a nozzle body, a throat pipe, a compression spring screw and a plug, the nozzle body is of a hollow cylinder structure, an air inlet is formed in the top of the nozzle body, and a tip seat is fixedly mounted at the bottom of the nozzle body; a hole channel is formed in one side of the interior of the nozzle body and is in a C shape, and a flow channel is formed in the position, away from the hole channel, of the interior of the nozzle body. The sliding block is installed in the nozzle body, the position of the sliding block is adjusted through the elastic force applied to the sliding block by the spring and the resultant force of the pressure applied by hydrogen entering the nozzle body, and then the sliding block shields the runner to different degrees, so that the flowing speed of the hydrogen in the nozzle body is adjusted; the purpose of adjusting the internal pressure of the hydrogen nozzle is achieved, the hydrogen can be kept in a relatively stable pressure range in the transportation process, and equipment damage caused by large pressure fluctuation is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen nozzles, and specifically relates to a hydrogen nozzle. Background Art

[0002] In hydrogen storage and transportation equipment, a nozzle is a relatively common fluid injection device, which is used to inject liquid fluid in a jet shape in a specified direction and range, so as to facilitate the reaction of hydrogen or ignite hydrogen to achieve combustion. However, the traditional nozzles for hydrogen transmission have many inconveniences in use. Therefore, in order to ensure the safety of hydrogen storage and transportation equipment, we propose a hydrogen nozzle.

[0003] The following defects still exist in the prior art during use: In terms of pressure regulation of the hydrogen nozzle in the prior art, the pressure regulation accuracy of the traditional nozzle is poor, and it is difficult to accurately control according to actual needs, often resulting in large pressure fluctuations, affecting the stability of hydrogen storage and transportation, and even possibly causing equipment failures; During the use of the hydrogen nozzle in the prior art, since hydrogen is flammable and explosive, static electricity is extremely likely to be generated due to friction at the nozzle. When the static electricity accumulates to a certain extent, electrostatic breakdown will occur, leading to serious safety accidents.

[0004] In view of this, we propose a hydrogen nozzle to solve the existing problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a hydrogen nozzle to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A hydrogen nozzle includes a nozzle body, a throat tube, a compression spring screw, and a plug. The nozzle body is a hollow cylindrical structure, and an air inlet is provided at the top of the nozzle body. A tip seat is fixedly installed at the bottom of the nozzle body. A channel is opened on one side inside the nozzle body, and the channel is C-shaped. A flow channel is opened at a position inside the nozzle body far from the channel, and the flow channel extends to the outside of the nozzle body; A throat tube is fixedly installed on one side of the nozzle body, and the throat tube is communicated with the flow channel. A check block is movably installed inside the throat tube near the nozzle body, and a check spring is sleeved outside the check block. A spray groove is opened inside the throat tube; A compression spring screw is fixedly installed inside the nozzle body. A spring is fixedly installed at the bottom of the compression spring screw. A slider is fixedly installed at the bottom of the spring. A vent hole is opened inside the compression spring screw, and the installation position of the compression spring screw is higher than the channel; A plug is fixedly installed at the bottom inside the nozzle body; Both ends of the duct are in communication with the interior of the nozzle body, and the cross-sectional diameter of the duct is smaller than the inner diameter of the nozzle body. The duct can guide a part of the hydrogen flow to between the plug and the slider.

[0007] Preferably, a traction belt is fixedly installed at the top of the plug, and the traction belt is electrically connected to the slider. A discharge seat is fixedly installed at the bottom of the plug.

[0008] Preferably, the slider is a solid cylindrical structure, and a limiting disk with a diameter larger than the inner diameter of the pipeline inside the nozzle body is fixedly installed at the bottom of the slider.

[0009] Preferably, the tip seat is a hollow conical structure with the tip facing downwards, and a plurality of ventilation grooves are provided inside the tip seat.

[0010] Preferably, two fixing bolts are installed inside the throat pipe, and the fixing bolts extend into the interior of the nozzle body.

[0011] Preferably, the injection groove is a trumpet-shaped channel structure, and the side with the larger diameter of the injection groove is set as the nozzle.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, by installing a slider inside the nozzle body, the position of the slider is adjusted by the combined force of the elastic force applied to the slider by the spring and the pressure applied by the hydrogen entering the interior of the nozzle body, so as to enable the slider to block the flow channel to different degrees, thereby adjusting the flow rate of hydrogen inside the nozzle body and achieving the purpose of adjusting the internal pressure of the hydrogen nozzle. It can keep the hydrogen at a relatively stable pressure range during transportation and avoid equipment damage caused by large pressure fluctuations.

[0013] In the present invention, by installing a tip seat at the bottom of the nozzle body, based on the principle of tip discharge, the static electricity inside the nozzle body can be continuously released through the tip seat, thereby preventing a large amount of static electricity from being generated during the long-term contact and friction between the nozzle body and its internal components and hydrogen. After the static electricity is re-breakdown, sparks are formed to cause hydrogen combustion, which improves the safety of the hydrogen nozzle during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structure schematic diagram of the present invention; Figure 2 is a three-dimensional sectional structure schematic diagram of the present invention; Figure 3 is a partial three-dimensional sectional structure schematic diagram of the present invention; Figure 4 is a front external structure schematic diagram of the present invention; Figure 5 is a front sectional state I structure schematic diagram of the present invention; Figure 6 Schematic diagram of the second state of the front cross-section of the present invention; Figure 7 Schematic diagram of the third state of the front cross-section of the present invention.

[0015] In the figure: 1. Nozzle body; 101. Air inlet; 102. Tip seat; 103. Channel; 104. Flow channel; 2. Throat tube; 201. Check block; 202. Check spring; 203. Injection groove; 204. Nozzle; 3. Compression spring screw; 301. Spring; 302. Slide block; 4. Plug; 401. Traction belt; 402. Discharge seat. Specific embodiments

[0016] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] As Figure 1 - Figure 7 shown, a hydrogen nozzle proposed by the present invention includes a nozzle body 1, a throat tube 2, a compression spring screw 3 and a plug 4. The nozzle body 1 is a hollow cylindrical structure, and an air inlet 101 is provided at the top of the nozzle body 1. A tip seat 102 is fixedly installed at the bottom of the nozzle body 1. A channel 103 is opened on one side inside the nozzle body 1, and the channel 103 is C-shaped. A flow channel 104 is opened at a position inside the nozzle body 1 away from the channel 103, and the flow channel 104 extends to the outside of the nozzle body 1. The nozzle body 1 can guide hydrogen so that hydrogen is transmitted between the nozzle body 1 and the throat tube 2. The air inlet 101 can be externally connected to a pipeline, so that hydrogen enters the inside of the nozzle body 1. The tip seat 102 can be connected to the nozzle body 1. Based on the principle of tip discharge, during the operation of the nozzle body 1, the static electricity generated by the nozzle body 1 and its surrounding components is continuously released into the air, thereby eliminating the charge accumulated inside the device and avoiding the occurrence of electrostatic breakdown when hydrogen is transmitted inside the device, improving the safety of the device during hydrogen transportation. The channel 103 can guide a small amount of hydrogen to flow into the cavity between the slide block 302 and the plug 4. When the hydrogen entering the inside of the nozzle body 1 generates a pressure change, the resultant force of the spring 301 elasticity and the hydrogen pressure drives the slide block 302 to move inside the nozzle body 1, thereby adjusting the opening and closing amplitude of the flow channel 104, so that hydrogen can enter the throat tube 2 and be ejected with a relatively stable pressure, thus ensuring the stability of hydrogen transmission and injection; On one side of the nozzle body 1, a throat tube 2 is fixedly installed, and the throat tube 2 is communicated with the flow channel 104. A check block 201 is movably installed on one side of the throat tube 2 close to the nozzle body 1, and a check spring 202 is sleeved outside the check block 201. A spray groove 203 is formed inside the throat tube 2. The throat tube 2 is installed at a 90-degree angle with the nozzle body 1, and the throat tube 2 is communicated with the flow channel 104, enabling hydrogen to enter the throat tube 2 from the nozzle body 1 and then be sprayed out in a specified direction through the spray groove 203 inside the throat tube 2. One end of the check block 201 has a diameter larger than that of the flow channel 104, and the diameter of the other end is smaller than the diameter of the inner pipe of the throat tube 2. Under the elastic force applied by the check spring 202, the check block 201 can abut against the side of the throat tube 2 close to the flow channel 104. When the hydrogen pressure is greater than the elastic force applied by the check spring 202 to the check block 201, hydrogen can enter the inside of the throat tube 2 and be ejected from the throat tube 2 through the spray groove 203. When the hydrogen inside the spray groove 203 has a reflux phenomenon, based on the pressure exerted by the reflux hydrogen on the check block 201 and the elastic force applied by the check spring 202, the check block 201 can be pushed towards the flow channel 104 direction to block the flow channel 104, avoiding the reflux of hydrogen inside the throat tube 2 into the nozzle body 1, achieving the purpose of one-way guiding. The spray groove 203 is in a horn-shaped structure, which can expand the spraying range of hydrogen from the throat tube 2; A compression spring screw 3 is fixedly installed inside the nozzle body 1. A spring 301 is fixedly installed at the bottom of the compression spring screw 3, and a slider 302 is fixedly installed at the bottom of the spring 301. A vent hole is formed inside the compression spring screw 3, and the installation position of the compression spring screw 3 is higher than the hole channel 103 to facilitate controlling the spraying pressure of hydrogen, enabling hydrogen to be ejected from the inside of the device in a relatively stable state. The compression spring screw 3 can fixedly install the spring 301 and guide hydrogen into the inside of the nozzle body 1. The compression spring screw 3 can fix one end of the spring 301, so that the spring 301 can stably apply an elastic force to the slider 302. The slider 302 can move inside the nozzle body 1 to adjust the opening size of the flow channel 104, thereby achieving the purpose of adjusting the hydrogen flow rate; A plug 4 is fixedly installed at the bottom inside the nozzle body 1. The plug 4 can block the opening at the bottom of the nozzle body 1 and cooperate with the discharge seat 402 to transfer the charge of the plug 4 and its surrounding area to the tip of the discharge seat 402, and then release the static electricity into the inside of the tip seat 102; Both ends of the channel 103 are in communication with the interior of the nozzle body 1, and the cross-sectional diameter of the channel 103 is smaller than the inner diameter of the nozzle body 1. The channel 103 can guide a part of the hydrogen gas flow between the plug 4 and the slider 302. When the hydrogen gas pressure inside the nozzle body 1 changes, the pressure value between the plug 4 and the slider 302 changes accordingly. Thus, under the combined action of the elastic force of the spring 301 and the hydrogen gas pressure, the slider 302 moves inside the nozzle body 1 to adjust the opening size of the flow channel 104, ensuring the stability when the hydrogen gas is ejected.

[0018] Furthermore, a traction belt 401 is fixedly installed at the top of the plug 4, and the traction belt 401 is electrically connected to the slider 302. A discharge seat 402 is fixedly installed at the bottom of the plug 4. The traction belt 401 can connect the plug 4 and the slider 302, enabling the charge inside the slider 302 to be transferred to the plug 4. The discharge seat 402 at the bottom of the plug 4 is used for tip discharge of the charge of the slider 302, thereby eliminating the static electricity on the slider 302 and avoiding the hydrogen gas combustion caused by the static electricity generated by the long-term contact and friction between the slider 302 and the nozzle body 1 and the hydrogen gas.

[0019] Furthermore, the slider 302 is a solid cylinder structure, and a limit disk with a diameter larger than the inner pipeline diameter of the nozzle body 1 is fixedly installed at the bottom of the slider 302. The limit disk at the bottom of the slider 302 can prevent the slider 302 from moving excessively, thereby avoiding the slider 302 from blocking the channel 103.

[0020] Furthermore, the tip seat 102 is a hollow conical structure with the tip facing downwards, and a plurality of ventilation grooves are provided inside the tip seat 102. The ventilation grooves can enable the air to flow inside and outside the tip seat 102, and then enable the air to carry the charge out, realizing the continuous release of static electricity.

[0021] Furthermore, two fixing bolts are installed inside the throat 2, and the fixing bolts extend into the interior of the nozzle body 1. The fixing bolts can fixedly connect the nozzle body 1 and the throat 2, thereby ensuring the connection stability between the nozzle body 1 and the throat 2.

[0022] Furthermore, the injection groove 203 is a horn-shaped channel structure, and the larger-diameter side of the injection groove 203 is set as the nozzle 204. The injection groove 203 and the nozzle 204 can guide the hydrogen gas injection, thereby expanding the injection range of the hydrogen gas and restricting the injection direction of the hydrogen gas, avoiding the hydrogen gas injection being too extensive and difficult to control.

[0023] Working principle: After the device is assembled, an external pipe is connected to the top of the nozzle body 1, so that hydrogen enters the interior of the nozzle body 1 through the air inlet 101. The hydrogen enters the interior of the nozzle body 1 after passing through the compression spring screw 3. The hydrogen flows through the flow channel 104 and the hole channel 103 respectively. The hydrogen flows through the hole channel 103 to between the plug 4 and the slider 302. At the same time, most of the hydrogen enters the throat pipe 2 through the flow channel 104. The check block 201 is pushed open by applying pressure to one side of the check block 201 by the hydrogen, so that the hydrogen is ejected from the throat pipe 2 through the ejection groove 203; When the flow rate of the hydrogen entering the interior of the nozzle body 1 is slow and the pressure is small, the slider 302 is at the lowest position. At this time, the flow channel 104 is in a fully open state, and the hydrogen enters the throat pipe 2 through the flow channel 104 and is ejected; When the flow rate of the hydrogen entering the interior of the nozzle body 1 becomes faster and the pressure becomes larger, the slider 302 floats in the middle position under the combined action of the elastic force of the spring 301 and the pressure exerted by the hydrogen. At this time, the flow channel 104 is in a semi-open state, so that the hydrogen enters the throat pipe 2 through the semi-open flow channel 104. When the slider 302 floats in the middle position, the faster the flow rate of the hydrogen and the greater the pressure, the slider 302 moves upward, and the opening of the flow channel 104 becomes smaller. On the contrary, the slower the flow rate of the hydrogen and the smaller the pressure, the slider 302 moves downward, and the opening of the flow channel 104 becomes larger. Thus, the flow rate of the hydrogen is automatically adjusted to make the flow rate tend to be stable and prevent large fluctuations; When the flow rate of the hydrogen entering the interior of the nozzle body 1 is too fast and the pressure is greater than the set safety limit, the slider 302 is at the uppermost position, completely blocking the flow channel 104. At this time, the flow channel 104 is completely closed to intercept the hydrogen, and the hydrogen cannot enter the throat pipe 2 and be ejected until the hydrogen pressure drops, and then the slider 302 gradually descends, the flow channel 104 slowly opens, and the hydrogen is slowly ejected through the throat pipe 2 again; During the process of the device transmitting hydrogen, the discharge seat 402 and the tip seat 102 cooperate to transfer the charges inside the plug 4 and the nozzle body 1 respectively, so that the charges are concentrated inside the tip seat 102, and then the static electricity is released through the tip position of the tip seat 102 to eliminate the charges inside the device and avoid safety problems caused by static electricity breakdown of hydrogen.

[0024] The above specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A hydrogen nozzle, comprising a nozzle body (1), a throat tube (2), a compression spring screw (3) and a plug (4), characterized in that: The nozzle body (1) is a hollow cylindrical structure, and an air inlet (101) is provided at the top of the nozzle body (1). A tip seat (102) is fixedly installed at the bottom of the nozzle body (1). A channel (103) is provided on one side inside the nozzle body (1), and the channel (103) is C-shaped. A flow channel (104) is provided at a position inside the nozzle body (1) far from the channel (103), and the flow channel (104) extends to the outside of the nozzle body (1). A throat tube (2) is fixedly installed on one side of the nozzle body (1), and the throat tube (2) is communicated with the flow channel (104). A check block (201) is movably installed on the side of the throat tube (2) close to the nozzle body (1), and a check spring (202) is sleeved on the outside of the check block (201). A spraying groove (203) is provided inside the throat tube (2). A compression spring screw (3) is fixedly installed inside the nozzle body (1). A spring (301) is fixedly installed at the bottom of the compression spring screw (3). A slider (302) is fixedly installed at the bottom of the spring (301). An air vent is provided inside the compression spring screw (3), and the installation position of the compression spring screw (3) is higher than that of the channel (103). A plug (4) is fixedly installed at the bottom inside the nozzle body (1). Both ends of the channel (103) are communicated with the inside of the nozzle body (1), and the cross-sectional diameter of the channel (103) is smaller than the inner diameter of the nozzle body (1). The channel (103) can guide part of the hydrogen gas flow to between the plug (4) and the slider (302).

2. The hydrogen nozzle according to claim 1, wherein: A traction belt (401) is fixedly installed at the top of the plug (4), and the traction belt (401) is electrically connected to the slider (302). A discharge seat (402) is fixedly installed at the bottom of the plug (4).

3. A hydrogen nozzle according to claim 1, characterized in that: The slider (302) is a solid cylindrical structure, and a limiting disc with a diameter larger than the inner pipe diameter of the nozzle body (1) is fixedly installed at the bottom of the slider (302).

4. A hydrogen nozzle according to claim 1, characterized in that: The tip seat (102) is a hollow conical structure with the tip facing downwards, and a plurality of ventilation grooves are provided inside the tip seat (102).

5. A hydrogen nozzle according to claim 1, wherein: Two fixing bolts are installed inside the throat tube (2), and the fixing bolts extend to the inside of the nozzle body (1).

6. A hydrogen nozzle according to claim 1, characterized in that: The spraying groove (203) is a horn-shaped channel structure, and the side with a larger diameter of the spraying groove (203) is set as a nozzle (204).

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