Real-time automatic exhaust device

Abstract

The invention relates to the technical field of photovoltaics, in particular to a real-time autonomous exhaust device which comprises a main body lower section, a main body upper section, a first hydrophobic breathable film, a second hydrophobic breathable film, a sealing cover and a central water pipe, the first hydrophobic breathable film is arranged between the main body lower section and the main body upper section, and the main body lower section is fixedly connected with the main body upper section; a water storage cavity and a water outlet are formed in the lower section of the main body, the second hydrophobic breathable film is in contact with the upper section of the main body and the central water pipe, and the sealing cover is fixedly connected with the upper section of the main body and the central water pipe. And even if all physical switching actions are automatically realized by the electromagnetic valve, the physical switching actions need to be controlled while being observed by people, so that the automation degree of the equipment is reduced, and meanwhile, the equipment is shut down and cannot produce in the exhaust process, and the productivity of the equipment is also greatly reduced.

Description

Technical Field

[0001] The invention relates to the field of photovoltaic technology, and in particular to a real-time autonomous exhaust device. Background Art

[0002] The laser non-destructive cutting technology for solar cells uses a pulsed laser to open a short groove at both ends of a silicon wafer with a thickness of about 130um, and then uses a continuous laser to scan from one short groove to the other in a straight line to heat the scanned area; then cooling water is sprayed along the continuous laser scanning path, and the silicon wafer generates thermal stress under the alternating action of hot and cold, causing stress concentration at the groove and cracking there, and then cracking along the scanning path to the short groove at the other end, thereby "cutting" the silicon wafer.

[0003] The water spraying process in the laser non-destructive cutting process of solar cells is that water and compressed air pass through the water channel and air channel of the two-fluid nozzle respectively and reach the end of the nozzle. The water channel and the air channel are concentric, the inner circle is the water channel, and the outer circle is the air channel. Water flows out from the water channel of the inner circle, and compressed air flows out from the air channel of the outer circle. After the two meet, the compressed air blows the water into a mist and sprays it on the surface of the battery cell about 2mm away from the end of the nozzle, which plays a role in cooling the battery cell. The water supply pressure of the spray is about 0.01MPa, and the compressed air pressure is about 0.1MPa. Due to the large pressure difference between the two, when the compressed air and water are sprayed on the surface of the battery cell at the same time, the compressed air will be reflected on the surface of the battery cell and enter the waterway through the middle waterway in the form of tiny bubbles. The tiny bubbles float to the main pipeline, accumulate into a large number, and form larger bubbles gathered in the pipeline; part of the air originally dissolved in the waterway will also precipitate under the stirring action of the electromagnetic valve core, and gather into larger bubbles and remain in the waterway; If there are large bubbles in the water spray pipeline that cut off the water and the bubbles flow out of the nozzle with the water flow, the water mist will be cut off. When the spray is cut off, the temperature drop in the area is discontinuous, and the cutting crack cannot continue to extend, that is, the battery cell cannot be cut; even if the bubbles in the pipeline are not discharged with the nozzle, they will accumulate and cause the pipeline to be hollow. Since air has good compressibility, the water spray volume and spray shape at the nozzle will be unstable, which has a direct impact on the straightness of the battery cutting; non-destructive cutting has strict requirements on the water on-off time, and the water on-off response must be fast, that is, when the solenoid valve that controls the water on-off is opened, the water should flow out of the nozzle as soon as possible, and when the solenoid valve is closed, the water at the nozzle should be cut off immediately. When there is a large amount of air in the pipeline, it will seriously affect the timeliness of the water on-off.

[0004] For the above questions, see Figure 1The existing solution is to install a bubble collection device in the middle of the water pipe between the solenoid valve a that controls the water on and off and the nozzle below. The buffer bottle is the most common. The inner diameter of the water supply pipe is generally 2-4mm, and the inner diameter of the buffer bottle is usually greater than 10mm. In this way, the tiny bubbles floating in the water path will gather on the upper part of the buffer bottle and will not fall with the water flow. The buffer bottle is provided with an exhaust hole, and the exhaust hole is connected to a physical switch b such as a manual or electric valve. A physical switch c such as a manual or electric valve should also be added in the middle of the pipeline between the buffer bottle and the nozzle. When exhausting, it is necessary to close switch c first, then open a, and then open b again. In this way, the water above flows into the buffer bottle. Since c is in a closed state, the water cannot flow downward. At this time, the air in the buffer bottle is displaced by the water and discharged through b. When the water fills the buffer bottle, the exhaust is completed. After the exhaust is completed, b and a are closed in turn, and then c is opened to restore the water path to the state before exhaust.

[0005] However, in the above-mentioned methods of discharging gas in the water channel, a physical switch additionally needs to be added to the manual switch. Even if the above-mentioned physical switch actions are all automatically realized by the solenoid valve, it still requires human observation and control, which reduces the degree of automation of the equipment. At the same time, during the exhaust process, the equipment is shut down and cannot be produced, which also greatly reduces the equipment production capacity. Summary of the invention

[0006] The purpose of the present invention is to provide a real-time autonomous exhaust device, which aims to solve the problem that in the prior art, a physical switch is required to be added to the manual switch for exhausting gas in the water channel. Even if the above-mentioned physical switch actions are all automatically realized by the solenoid valve, it still requires human observation and control, which reduces the degree of automation of the equipment. At the same time, during the exhaust process, the equipment is shut down and cannot produce, which also greatly reduces the technical problem of the equipment's production capacity.

[0007] To achieve the above-mentioned purpose, the present invention adopts a real-time autonomous exhaust device, including a main body lower section, a main body upper section, a first hydrophobic breathable membrane, a second hydrophobic breathable membrane, a sealing cover and a central water pipe, wherein the first hydrophobic breathable membrane is arranged between the main body lower section and the main body upper section, and the main body lower section is fixedly connected to the main body upper section, the main body lower section is provided with a water storage cavity and a water outlet, the second hydrophobic breathable membrane is in contact with the main body upper section and the central water pipe, the sealing covers are fixedly connected to the main body upper section and the central water pipe, the central water pipe is provided with a water injection pipeline, a sealing chamber is arranged between the first hydrophobic breathable membrane and the second hydrophobic breathable membrane, a sealing medium is provided in the sealing chamber, an exhaust port is arranged on the sealing cover, and an air chamber is arranged between the sealing cover and the second hydrophobic breathable membrane.

[0008] Wherein, the first hydrophobic breathable membrane and the second hydrophobic breathable membrane are both provided with micropores of 0.1-10 um and a porosity of 10-90%.

[0009] Wherein, the first hydrophobic breathable membrane and the second hydrophobic breathable membrane are both circular.

[0010] Wherein, the first hydrophobic breathable membrane and the second hydrophobic breathable membrane are both made of PTFE material or EPTFE material.

[0011] Wherein, the real-time autonomous exhaust device also includes a blocking piece, and the upper section of the main body is provided with a filling port, and the blocking piece is placed in the filling port.

[0012] Wherein, the sealing medium in the sealing chamber is water or other macromolecular liquid.

[0013] Wherein, the diameter of the water injection pipeline is 2-4 mm.

[0014] Wherein, a polygonal hole is arranged on the blocking member, and the polygonal hole is arranged at an end of the blocking member away from the central water pipe.

[0015] A real-time autonomous exhaust device of the present invention, when in use, connects the water injection pipeline to the electromagnetic valve a of the water supply pipeline, connects the water outlet to the nozzle, fills the sealing chamber with a sealing medium, the inner diameter of the water injection pipeline is usually 2-4mm, the diameter of the nozzle water outlet is usually 0.2-0.3mm, and the water supply pressure is usually 0.01MPa; due to the large difference in diameter between the water supply port and the water discharge port and the water supply pressure of 0.01MPa, when the electromagnetic valve a on the water supply waterway is opened, the pressure relief capacity of the nozzle water discharge hole is limited, which is equivalent to a water pressure of nearly 0.01MPa in the water storage chamber. The water pressure in the water storage chamber causes the air enriched on the top to be discharged through the first hydrophobic breathable membrane. Since the hydrophobic breathable membrane has the function of water-blocking and air-permeable, it can While allowing the air in the water storage chamber to pass through, the water therein is blocked inside the water storage chamber. The air discharged through the first hydrophobic breathable membrane enters the sealed chamber with a sealing medium and continues to float up and gather. Because the sealed chamber is filled with a sealing medium, the gathered air can only be discharged to the air chamber above through the second hydrophobic breathable membrane, and then discharged through the exhaust hole. In this way, the existing method of discharging gas in the waterway, which requires a physical switch to be added manually, is solved. Even if the above-mentioned physical switch actions are all automatically realized by the solenoid valve, it still needs to be controlled by a person while observing, which reduces the automation degree of the equipment. At the same time, during the exhaust process, the equipment is shut down and cannot be produced, which also greatly reduces the technical problem of equipment production capacity; Through the provided sealing chamber and the first hydrophobic breathable membrane, the sealing chamber is filled with a sealing medium, the function of the sealing medium is to isolate the water storage chamber from the atmosphere, and play a one-way exhaust role, that is, air can only be discharged from the waterway to the atmosphere, and the air in the atmosphere cannot enter the waterway; if there is no water in the sealing chamber, the water storage chamber and the external atmosphere are separated by only the first hydrophobic breathable membrane, because of the air permeability of the hydrophobic breathable membrane, the water storage chamber can be regarded as directly connected to the atmosphere, and the water in the water storage chamber can directly flow out through the lower nozzle, that is, the pipeline is leaking; when valve a is closed, the water storage chamber and the lower pipeline are not supplemented by the upper water supply, and as the leakage continues, air will enter the pipeline through the first hydrophobic breathable membrane; with the sealing medium, even if valve a is closed, because the sealing medium cannot enter the water storage chamber through the first hydrophobic breathable membrane, the external air cannot enter the water storage chamber and the lower pipeline through the sealing medium, and leakage will not occur; The second hydrophobic breathable membrane can not only allow the gas accumulated in the sealed chamber to pass through and be discharged, but also prevent the sealing medium from leaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the conventional method of solving the problem of large amounts of air in the pipeline.

[0018] Figure 2 It is a schematic diagram of the installation of the water supply pipeline and the nozzle according to the first embodiment of the present invention.

[0019] Figure 3 It is a schematic structural diagram of the first embodiment of the present invention.

[0020] Figure 4 It is a front view of the first embodiment of the present invention.

[0021] Figure 5 The present invention Figure 4 AA line structural section view.

[0022] Figure 6 It is a schematic structural diagram of the second embodiment of the present invention.

[0023] Figure 7 The present invention Figure 6 BB line structural cross-sectional view.

[0024] 101-lower section of the main body, 102-upper section of the main body, 103-first hydrophobic breathable membrane, 104-second hydrophobic breathable membrane, 105-sealing cover, 106-central water pipe, 107-water storage chamber, 108-water outlet, 109-water injection pipeline, 110-sealed chamber, 111-air outlet, 112-air chamber, 113-blocking piece, 114-filling port, 115-polygonal hole, 201-water outlet section, 202-air outlet section, 203-sealed section, 204-third hydrophobic breathable membrane, 205-fourth hydrophobic breathable membrane, 206-air outlet, 207-water inlet, 208-water delivery port, 209-sealed chamber, 210-water storage chamber. DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0026] The first embodiment of the present application is: See also Figure 1~Figure 5 ,in Figure 1 This is a schematic diagram of the conventional solution to a large amount of air in the pipeline. Figure 2 This is a schematic diagram of the installation of the water supply pipeline and the nozzle of the first embodiment of the present invention. Figure 3 is a schematic structural diagram of a first embodiment of the present invention, Figure 4 is a front view of a first embodiment of the present invention, Figure 5 The present invention Figure 4 AA line structural section view.

[0027] The present invention provides a real-time autonomous exhaust device, comprising a main body lower section 101, a main body upper section 102, a first hydrophobic breathable membrane 103, a second hydrophobic breathable membrane 104, a sealing cover 105 and a central water pipe 106, wherein the first hydrophobic breathable membrane 103 is arranged between the main body lower section 101 and the main body upper section 102, and the main body lower section 101 is fixedly connected to the main body upper section 102, the main body lower section 101 is provided with a water storage cavity 107 and a water outlet 108, and the second hydrophobic breathable membrane 104 is connected to the main body upper section 102. The upper section 102 of the body is in contact with the central water pipe 106, the sealing cover 105 is fixedly connected to the upper section 102 of the body and the central water pipe 106, the central water pipe 106 is provided with a water injection pipeline 109, a sealing chamber 110 is provided between the first hydrophobic breathable membrane 103 and the second hydrophobic breathable membrane 104, the sealing chamber 110 has a sealing medium, an exhaust port 111 is provided on the sealing cover 105, and an air chamber 112 is provided between the sealing cover 105 and the second hydrophobic breathable membrane 104; The diameter of the water injection pipeline 109 is 2-4 mm; The first hydrophobic breathable membrane 103 and the second hydrophobic breathable membrane 104 are both provided with micropores of 0.1-10 um and a porosity of 10-90%; The first hydrophobic breathable membrane 103 and the second hydrophobic breathable membrane 104 are both circular; The first hydrophobic breathable membrane 103 and the second hydrophobic breathable membrane 104 are both made of PTFE material or EPTFE material; With respect to this specific embodiment, when it is used, the water injection pipeline 109 is connected to the electromagnetic valve a of the water supply pipeline, the water outlet 108 is connected to the nozzle, the sealing chamber 110 is filled with a sealing medium, the inner diameter of the water injection pipeline 109 is usually 2-4 mm, the diameter of the nozzle water outlet hole is usually 0.2-0.3 mm, and the water supply pressure is usually 0.01 MPa; due to the large difference in the diameter of the water supply port and the water outlet and the water supply pressure of 0.01 MPa, when the electromagnetic valve a on the water supply waterway is opened, the pressure relief capacity of the nozzle water outlet is limited, which is equivalent to a water pressure of nearly 0.01 MPa in the water storage chamber 107. The water pressure in the water storage chamber 107 causes the air enriched on the top to be discharged through the first hydrophobic breathable membrane 103. Since the hydrophobic breathable membrane has the function of water-blocking and air-permeable, the water can be discharged through the first hydrophobic breathable membrane 103. While the air in the water storage chamber 107 is passing through, the water therein is blocked inside the water storage chamber 107. The air discharged through the first hydrophobic breathable membrane 103 enters the sealed chamber 110 with a sealing medium and continues to float up and gather. Because the sealed chamber 110 is filled with a sealing medium, the gathered air can only be discharged to the air chamber 112 above through the second hydrophobic breathable membrane 104, and then discharged through the exhaust hole. In this way, the problem of the existing method of discharging gas in the waterway, which requires a manual switch to add a physical switch, is solved. Even if the above-mentioned physical switch actions are all automatically realized by the solenoid valve, it is still necessary for a person to observe and control it, which reduces the degree of automation of the equipment. At the same time, during the exhaust process, the equipment is shut down and cannot be produced, which also greatly reduces the technical problem of the equipment's production capacity. Among them, the real-time autonomous exhaust device also includes a blocking member 113, and the upper section 102 of the main body is provided with a filling port 114, and the blocking member 113 is placed in the filling port 114; The sealing medium in the sealing chamber 110 is water or other macromolecular liquids.

[0028] According to a specific implementation, the plugging member 113 and the filling port 114 are provided, the sealing medium is added into the sealing chamber 110 through the filling port 114 , and the filling port 114 is blocked and sealed by the plugging member 113 .

[0029] Secondly, a polygonal hole 115 is provided on the blocking member 113 , and the polygonal hole 115 is provided at an end of the blocking member 113 away from the central water pipe 106 .

[0030] According to a specific implementation, by providing the polygonal hole 115 , it is possible to facilitate installation and removal of the blocking member 113 using tools.

[0031] A real-time autonomous exhaust device of the present embodiment is used. When in use, the water injection pipeline 109 is connected to the electromagnetic valve a of the water supply pipeline, the water outlet 108 is connected to the nozzle, and the sealing chamber 110 is filled with a sealing medium. The inner diameter of the water injection pipeline 109 is usually 2-4 mm, the diameter of the nozzle water outlet hole is usually 0.2-0.3 mm, and the water supply pressure is usually 0.01 MPa. Due to the large difference in the diameter of the water supply port and the water outlet and the water supply pressure of 0.01 MPa, when the electromagnetic valve a on the water supply waterway is opened, the pressure relief capacity of the nozzle water outlet is limited, which is equivalent to a water pressure of nearly 0.01 MPa in the water storage chamber 107. The water pressure in the water storage chamber 107 causes the air enriched on its top to be discharged through the first hydrophobic breathable membrane 103. Since the hydrophobic breathable membrane has the function of water-blocking and air-permeable , while allowing the air in the water storage chamber 107 to pass through, the water therein is blocked inside the water storage chamber 107, and the air discharged through the first hydrophobic breathable membrane 103 enters the sealed chamber 110 with a sealing medium and continues to float up and gather. Because the sealed chamber 110 is filled with a sealing medium, the gathered air can only be discharged to the air chamber 112 above through the second hydrophobic breathable membrane 104, and then discharged through the exhaust hole. In this way, the problem of the need for a manual switch to be added to the physical switch in the prior art for discharging gas in the waterway is solved. Even if the above-mentioned physical switch actions are all automatically realized by the solenoid valve, it is still necessary for a person to observe and control it, which reduces the degree of automation of the equipment. At the same time, during the exhaust process, the equipment is shut down and cannot be produced, which also greatly reduces the technical problem of the equipment's production capacity.

[0032] Through the provided sealed chamber 110 and the first hydrophobic breathable membrane 103, the sealed chamber 110 is filled with a sealing medium, the role of the sealing medium is to isolate the water storage chamber 107 from the atmosphere, and play a one-way exhaust role, that is, air can only be discharged from the waterway to the atmosphere, and the air in the atmosphere cannot enter the waterway; if there is no water in the sealed chamber 110, the water storage chamber 107 is separated from the external atmosphere by only the first hydrophobic breathable membrane 103, because of the air permeability of the hydrophobic breathable membrane, the water storage chamber 107 can be regarded as directly connected to the atmosphere. The water in the water storage chamber 107 can flow out directly through the lower nozzle, that is, the pipeline leaks; when valve a is closed, the water storage chamber 107 and the lower pipeline are not supplemented by the upper water supply, and as the leakage continues, air will enter the pipeline through the first hydrophobic breathable membrane 103; with the sealing medium, even if valve a is closed, because the sealing medium cannot enter the water storage chamber 107 through the first hydrophobic breathable membrane 103, the external air cannot enter the water storage chamber 107 and the lower pipeline through the sealing medium, and no leakage will occur; The second hydrophobic breathable membrane 104 can allow the gas accumulated in the sealing chamber 110 to pass through and be discharged, while preventing the sealing medium from leaking.

[0033] The second embodiment of the present application is: See also Figure 6 and Figure 7 , Figure 6 is a schematic structural diagram of a second embodiment of the present invention, Figure 7 The present invention Figure 6 BB line structural cross-sectional view.

[0034] The present invention provides a real-time autonomous exhaust device, comprising a water outlet section 201, an exhaust section 202, a sealing section 203, a third hydrophobic breathable membrane 204 and a fourth hydrophobic breathable membrane 205, wherein the third hydrophobic breathable membrane 204 is arranged between the exhaust section 202 and the water outlet section 201, the fourth hydrophobic breathable membrane 205 is arranged between the sealing section 203 and the exhaust section 202, the exhaust section 202 has an air outlet 206, the water outlet section 201 has a water inlet 207 and a water delivery port 208, the third hydrophobic breathable membrane 204 and the fourth hydrophobic breathable membrane 205 form a sealed cavity 209, the sealed cavity 209 has a sealing medium, and the water outlet section 201 has a water storage cavity 210.

[0035] According to this specific embodiment, the water inlet 207 is connected to the solenoid valve a of the water supply pipeline, and the water delivery port 208 is connected to the nozzle. When the solenoid valve a on the water supply waterway is opened, the pressure relief capacity of the nozzle drain hole is limited. Therefore, there is a water pressure of nearly 0.01MPa in the water storage chamber 210. The water pressure in the water storage chamber 210 causes the air enriched at the top to be discharged through the third hydrophobic breathable membrane 204. The air discharged through the third hydrophobic breathable membrane 204 enters the sealed chamber 209 with a sealing medium and continues to float and gather. Because the sealed chamber 209 is filled with the sealing medium, the gathered air can only be discharged to the upper sealing section 203 through the fourth hydrophobic breathable membrane 205 and then discharged through the air outlet 206.

[0036] A real-time autonomous exhaust device of the present embodiment is used, the water inlet 207 is connected to the electromagnetic valve a of the water supply pipeline, and the water delivery port 208 is connected to the nozzle. When the electromagnetic valve a on the water supply waterway is opened, the pressure relief capacity of the nozzle drainage hole is limited, so there is a water pressure of nearly 0.01MPa in the water storage chamber 210. The water pressure in the water storage chamber 210 causes the air enriched at the top to be discharged through the third hydrophobic breathable membrane 204. The air discharged through the third hydrophobic breathable membrane 204 enters the sealed chamber 209 with a sealing medium and continues to float and gather. Because the sealed chamber 209 is filled with the sealing medium, the gathered air can only be discharged to the upper sealing section 203 through the fourth hydrophobic breathable membrane 205 and then discharged through the air outlet 206.

[0037] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A real-time autonomous exhaust device, characterized in that: It includes a main body lower section, a main body upper section, a first hydrophobic breathable membrane, a second hydrophobic breathable membrane, a sealing cover and a central water pipe, wherein the first hydrophobic breathable membrane is arranged between the main body lower section and the main body upper section, and the main body lower section is fixedly connected to the main body upper section, the main body lower section is provided with a water storage cavity and a water outlet, the second hydrophobic breathable membrane is in contact with the main body upper section and the central water pipe, the sealing covers are fixedly connected to the main body upper section and the central water pipe, the central water pipe is provided with a water injection pipeline, a sealing chamber is arranged between the first hydrophobic breathable membrane and the second hydrophobic breathable membrane, a sealing medium is arranged in the sealing chamber, an exhaust port is arranged on the sealing cover, and an air chamber is arranged between the sealing cover and the second hydrophobic breathable membrane.

2. The real-time autonomous exhaust device according to claim 1, characterized in that: The first hydrophobic breathable membrane and the second hydrophobic breathable membrane are both provided with micropores of 0.1-10 um and a porosity of 10-90%.

3. The real-time autonomous exhaust device according to claim 2, characterized in that: The first hydrophobic breathable membrane and the second hydrophobic breathable membrane are both circular.

4. The real-time autonomous exhaust device according to claim 3, characterized in that: The first hydrophobic breathable membrane and the second hydrophobic breathable membrane are both made of PTFE material or EPTFE material.

5. The real-time autonomous exhaust device according to claim 4, characterized in that: The real-time autonomous exhaust device also includes a plugging member, and a filling port is provided on the upper section of the main body, and the plugging member is placed in the filling port.

6. The real-time autonomous exhaust device according to claim 5, characterized in that: The sealing medium in the sealing chamber is water or other macromolecular liquids.

7. The real-time autonomous exhaust device according to claim 6, characterized in that: The diameter of the water injection pipeline is 2-4 mm.

8. The real-time autonomous exhaust device according to claim 7, characterized in that: The blocking member is provided with a polygonal hole, and the polygonal hole is arranged at an end of the blocking member away from the central water pipe.

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