Distributed explosion-proof device and method for preparation production line of sulfide solid electrolyte

Abstract

The invention discloses a distributed explosion-proof device and method for a sulfide solid electrolyte preparation production line, and belongs to the field of sulfide solid electrolyte preparation. The distributed explosion-proof device for the preparation production line of the sulfide solid electrolyte comprises two symmetrically arranged explosion-proof rings, and further comprises a locking assembly for attaching and sealing the two explosion-proof rings, the detector is arranged in the explosion-proof ring; the gas storage ring is arranged in the explosion-proof ring; the gas spraying pipe is arranged on one side of the gas storage ring; when the detector detects that hydrogen sulfide leaks, inert gas in the gas storage ring is sprayed out through the gas spraying pipe; according to the invention, longer maintenance processing time can be provided for maintainers, inert gas in the gas storage ring and the explosion-proof ring can be cooled, and the risk of hydrogen sulfide explosion is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of sulfide solid electrolyte preparation, and in particular to a distributed explosion-proof device and method for a sulfide solid electrolyte preparation production line. Background Art

[0002] With the rapid development of new energy technologies, lithium-ion batteries, as efficient energy storage devices, have been widely used in many fields such as electric vehicles and portable electronic devices. Sulfide solid electrolytes have become a strong candidate for the next generation of lithium-ion battery electrolytes due to their advantages such as high ionic conductivity, good mechanical stability and compatibility with electrode materials, and have attracted much attention from scientific research and industry.

[0003] In the preparation process of sulfide solid electrolytes, the preparation process often involves high temperature, high pressure and the use of some flammable and explosive raw materials and reaction intermediates. For example, raw materials such as sulfur and metal sulfides are used in the preparation process. Hydrogen sulfide may be produced in the preparation process. Under certain conditions, hydrogen sulfide can easily react violently with oxygen in the air, thereby causing an explosion accident. Therefore, explosion-proof devices are required for explosion prevention.

[0004] The current explosion-proof devices are mainly sealed detection devices that detect leakage signals of hydrogen sulfide and then send out an alarm signal. However, there is also a certain amount of oxygen inside the explosion-proof device. If the leakage rate is too fast, causing the hydrogen sulfide inside to reach a certain concentration, the conditions for an explosion will be met. In addition, the explosion-proof device works under high temperature conditions, so it is very easy to cause an explosion accident. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and to provide a distributed explosion-proof device and method for a production line for a sulfide solid electrolyte that can overcome the above problems or at least partially solve the above problems.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A distributed explosion-proof device for a production line for preparing sulfide solid electrolytes comprises: two symmetrically arranged explosion-proof rings, and also comprises: a locking assembly for sealing the two explosion-proof rings; a detector arranged in the explosion-proof ring; a gas storage ring arranged in the explosion-proof ring; and a jet pipe arranged on one side of the gas storage ring; when the detector detects a hydrogen sulfide leak, the inert gas in the gas storage ring is ejected through the jet pipe.

[0008] In order to facilitate hydrogen sulfide explosion-proof treatment of various pipelines, the locking assembly further includes a cylinder symmetrically fixedly connected to the explosion-proof ring.

[0009] In order to facilitate accurate detection of leaked hydrogen sulfide, further, a detection ring is fixedly connected inside the explosion-proof ring, a detection cavity is arranged inside the detection ring, the injection pipe is arranged in the detection cavity, and the detector is fixedly arranged in the detection ring.

[0010] In order to facilitate the detection ring to detect hydrogen sulfide more accurately, further, corrugated surfaces are symmetrically arranged at both ends of the detection ring.

[0011] In order to facilitate cooling of the inert gas in the storage ring, further, a storage ring is fixedly connected inside the explosion-proof ring, the storage ring is arranged on the outside of the gas storage ring, a cooling cavity is arranged between the storage rings, and an injection head is arranged on the side of the storage ring close to the cooling cavity.

[0012] In order to cool down the outside of the explosion-proof ring and isolate the oxygen outside the explosion-proof ring, a plurality of discharge pipes connected with the cooling cavity are arranged on the explosion-proof ring.

[0013] In order to facilitate the supply of inert gas into the gas storage ring, the explosion-proof ring is further provided with a supply pipe connected to the gas storage ring, the supply pipe is provided with a connecting pipe, one end of the connecting pipe is fixedly connected with a connector, and the connector is threaded and sealed with the supply pipe.

[0014] In order to facilitate uniform gas supply to the detection cavity, further, an arc tube matching the detection ring is fixedly connected to the gas injection tube, and a plurality of gas injection ports are opened on the arc tube.

[0015] In order to prevent excessive accumulation of hydrogen sulfide gas, the arc tube is further arranged on the lower side of the detection cavity, the explosion-proof ring is provided with a gas leakage pipe connected to the detection cavity, and the gas leakage pipe is arranged on the upper side of the detection cavity, an exhaust pipe is fixedly connected between the two gas leakage pipes, and a secondary explosion-proof box is also included, and an air intake pipe is arranged at the air intake end of the secondary explosion-proof box, and the air intake pipe is connected to the exhaust pipe.

[0016] The distributed explosion-proof method for the preparation production line of sulfide solid electrolyte mainly includes the following steps:

[0017] Step 1: Place two explosion-proof rings on the pipes with leakage risk;

[0018] Step 2: When there is a leak at the pipeline connection, the detector detects the leakage signal of hydrogen sulfide and sends an alarm signal through the microcomputer;

[0019] Step 3, opening the solenoid valve in the jet pipe to allow the inert gas in the gas storage ring to be ejected;

[0020] Step 4: The ejected inert gas reduces the proportion of hydrogen sulfide and reduces the proportion of oxygen.

[0021] Compared with the prior art, the present invention provides a distributed explosion-proof device for a production line of sulfide solid electrolytes, which has the following beneficial effects:

[0022] 1. The preparation production line of the sulfide solid electrolyte uses a distributed explosion-proof device. The detector can detect the leakage signal of hydrogen sulfide. At this time, the external microcomputer receives the hydrogen sulfide leakage information detected by the detector, and the microcomputer sends an alarm signal to notify the staff to take emergency measures. At the same time, the microcomputer controls the solenoid valve in the jet pipe to open, and the high-pressure inert gas stored in the gas storage ring is ejected through the jet pipe. The ejected inert gas contacts with hydrogen sulfide, which reduces the relative concentration of hydrogen sulfide in the explosion-proof ring, thereby effectively reducing the risk of hydrogen sulfide explosion and providing maintenance personnel with longer maintenance processing time.

[0023] 2. The distributed explosion-proof device used in the production line for preparing the sulfide solid electrolyte can minimize the volume of the detection cavity by arranging a detection ring inside the explosion-proof ring, thereby facilitating the detector to detect leaked hydrogen sulfide, thereby effectively improving the accuracy of hydrogen sulfide leakage detection.

[0024] 3. The preparation production line of the sulfide solid electrolyte uses a distributed explosion-proof device. When the detector detects a hydrogen sulfide leak, the solenoid valve in the injection head is opened through a microcomputer control, and the liquid carbon dioxide in the storage ring is ejected. The ejected carbon dioxide becomes gaseous carbon dioxide and is in an endothermic state, thereby cooling the inert gas in the gas storage ring and the explosion-proof ring, thereby effectively reducing the risk of hydrogen sulfide explosion.

[0025] 4. The preparation production line of the sulfide solid electrolyte uses a distributed explosion-proof device. The carbon dioxide entering the cooling chamber is ejected through multiple discharge pipes, so that the explosion-proof ring can be cooled in multiple directions. At the same time, the oxygen concentration around the explosion-proof ring can be reduced, thereby effectively reducing the risk of hydrogen sulfide explosion.

[0026] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The present invention can provide maintenance personnel with longer maintenance processing time, can cool the inert gas in the gas storage ring and the explosion-proof ring, thereby effectively reducing the risk of hydrogen sulfide explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the structure of the distributed explosion-proof device for the production line of sulfide solid electrolyte proposed by the present invention Figure 1 ;

[0028] Figure 2 Schematic diagram of the structure of the distributed explosion-proof device for the production line of sulfide solid electrolyte proposed by the present invention Figure 2 ;

[0029] Figure 3 This is a schematic diagram of the expanded structure of the distributed explosion-proof device for the production line of the sulfide solid electrolyte proposed by the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of the explosion-proof ring and the detection ring in the distributed explosion-proof device for the preparation production line of the sulfide solid electrolyte proposed by the present invention;

[0031] Figure 5 A schematic cross-sectional view of an explosion-proof ring in a distributed explosion-proof device for a production line of sulfide solid electrolytes proposed by the present invention Figure 1 ;

[0032] Figure 6 A schematic cross-sectional view of an explosion-proof ring in a distributed explosion-proof device for a production line of sulfide solid electrolytes proposed by the present invention Figure 2 .

[0033] In the figure: 1. explosion-proof ring; 101. detection ring; 102. detector; 103. detection chamber; 104. cylinder; 105. vent pipe; 106. exhaust pipe; 107. corrugated surface; 2. gas storage ring; 201. jet pipe; 202. arc pipe; 203. jet port; 204. supply pipe; 205. connecting pipe; 206. connecting head; 3. storage ring; 301. injection head; 302. discharge pipe; 303. cooling chamber; 4. secondary explosion-proof box; 401. intake pipe. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Example 1: Reference Figure 1-Figure 6 A distributed explosion-proof device for a production line for preparing sulfide solid electrolytes includes: two symmetrically arranged explosion-proof rings 1, and also includes: a locking assembly for sealing the two explosion-proof rings 1; a detector 102, arranged in the explosion-proof ring 1; a gas storage ring 2, arranged in the explosion-proof ring 1; a jet pipe 201, arranged on one side of the gas storage ring 2; when the detector 102 detects a hydrogen sulfide leak, the inert gas in the gas storage ring 2 is ejected through the jet pipe 201.

[0036] During the preparation of sulfide solid electrolyte, explosion-proof rings 1 are placed on both sides of the pipe connection with the risk of leakage and explosion, so that the two explosion-proof rings 1 are attached to each other and sealed. When hydrogen sulfide leaks at the connection of the pipe, the leakage signal of hydrogen sulfide can be detected by the detector 102. At this time, the external microcomputer receives the hydrogen sulfide leakage information detected by the detector 102, and the microcomputer sends an alarm signal to notify the staff to take emergency measures. At the same time, the microcomputer controls the solenoid valve in the injection pipe 201 to open, and the high-pressure inert gas stored in the gas storage ring 2 is ejected through the injection pipe 201. The ejected inert gas contacts with hydrogen sulfide, so that the relative concentration of hydrogen sulfide in the explosion-proof ring 1 is reduced, thereby effectively reducing the risk of hydrogen sulfide explosion, and providing maintenance personnel with longer maintenance processing time.

[0037] Example 2: Reference Figure 1-Figure 6 The distributed explosion-proof device for the production line of sulfide solid electrolyte is basically the same as that of Example 1. Further, the locking assembly includes a cylinder 104 symmetrically fixedly connected to the explosion-proof ring 1.

[0038] At the pipe connection where the connection often needs to be disassembled, by arranging the cylinder 104 on the fixed pipe, the two explosion-proof rings 1 are put in a sealed fit state by extending the two groups of cylinders 104, so that it is applicable to a variety of different pipes and can perform hydrogen sulfide explosion-proof treatment on a variety of pipes.

[0039] A detection ring 101 is fixedly connected inside the explosion-proof ring 1 . A detection cavity 103 is provided inside the detection ring 101 . The jet pipe 201 is provided inside the detection cavity 103 . The detector 102 is fixedly provided inside the detection ring 101 .

[0040] By providing the detection ring 101 in the explosion-proof ring 1, the volume of the detection cavity 103 can be reduced to the greatest extent, so that the detector 102 can be convenient for detecting the leaked hydrogen sulfide, thereby effectively improving the accuracy of hydrogen sulfide leakage detection.

[0041] Corrugated surfaces 107 are symmetrically provided at both ends of the detection ring 101 .

[0042] A corrugated surface 107 is provided on the end surface of the detection ring 101 to connect the two detection chambers 103. At this time, the gas ejected from the two injection pipes 201 can dilute the hydrogen sulfide gas to the greatest extent to prevent the explosion of hydrogen sulfide.

[0043] When the detector 102 in one of the explosion-proof rings 1 detects hydrogen sulfide leakage first, the microcomputer first controls the solenoid valve in the jet pipe 201 in the explosion-proof ring 1 where the detector 102 that detects hydrogen sulfide leakage is located to open. At this time, the gas in the detection cavity 103 close to the detector 102 that detects hydrogen sulfide leakage has a tendency to flow to the adjacent detection cavity 103, thereby effectively dispersing the leaked and accumulated hydrogen sulfide, thereby effectively preventing the local hydrogen sulfide concentration from being too high.

[0044] Example 3: Reference Figure 1-Figure 6 A distributed explosion-proof device for a production line for preparing sulfide solid electrolytes is basically the same as Example 1. Furthermore, a storage ring 3 is fixedly connected to the explosion-proof ring 1, and the storage ring 3 is arranged on the outside of the gas storage ring 2. A cooling cavity 303 is arranged between the storage ring 3 and the gas storage ring 2, and an injection head 301 is arranged on the side of the storage ring 3 close to the cooling cavity 303.

[0045] When the detector 102 detects a hydrogen sulfide leak, the solenoid valve in the injection head 301 is opened through the microcomputer control, and the liquid carbon dioxide in the storage ring 3 is ejected. The ejected carbon dioxide becomes gaseous carbon dioxide and is in an endothermic state, thereby cooling the inert gas in the gas storage ring 2 and the explosion-proof ring 1, thereby effectively reducing the risk of hydrogen sulfide explosion.

[0046] The explosion-proof ring 1 is provided with a plurality of discharge pipes 302 communicating with the cooling cavity 303 .

[0047] The carbon dioxide entering the cooling chamber 303 is ejected through a plurality of discharge pipes 302 , thereby cooling the explosion-proof ring 1 in multiple directions and reducing the oxygen concentration around the explosion-proof ring 1 , thereby effectively reducing the risk of hydrogen sulfide explosion.

[0048] The explosion-proof ring 1 is provided with a supply pipe 204 connected to the gas storage ring 2 , and the supply pipe 204 is provided with a connecting pipe 205 , one end of the connecting pipe 205 is fixedly connected with a connector 206 , and the connector 206 is threadedly sealed to the supply pipe 204 .

[0049] Inert gas can be filled into the gas storage ring 2 through the supply pipe 204, so that the supply of inert gas can be guaranteed.

[0050] An arc tube 202 matching the detection ring 101 is fixedly connected to the air injection tube 201 , and a plurality of air injection ports 203 are formed on the arc tube 202 .

[0051] The multiple gas injection ports 203 on the arc tube 202 can ensure that the inert gas in the detection cavity 103 is evenly supplied.

[0052] Example 4: Reference Figure 1-Figure 6, a distributed explosion-proof device for a preparation production line of sulfide solid electrolytes is basically the same as Example 1, and further, the arc tube 202 is arranged at the lower side of the detection cavity 103, and the explosion-proof ring 1 is provided with a vent pipe 105 connected to the detection cavity 103, and the vent pipe 105 is arranged on the upper side of the detection cavity 103, and an exhaust pipe 106 is fixedly connected between the two vent pipes 105, and also includes a secondary explosion-proof box 4, and the air inlet end of the secondary explosion-proof box 4 is provided with an air inlet pipe 401, and the air inlet pipe 401 is connected to the exhaust pipe 106.

[0053] The inert gas supplied into the detection chamber 103 through the injection pipe 201 is transported along with the hydrogen sulfide to the secondary explosion-proof box 4 through the vent pipe 105 and the exhaust pipe 106 for treatment, thereby effectively reducing the safety hazard caused by excessive accumulation of hydrogen sulfide in the explosion-proof ring 1.

[0054] Example 5: A distributed explosion-proof method for a production line of sulfide solid electrolytes, mainly comprising the following steps:

[0055] Step 1: Place two explosion-proof rings 1 on the pipeline with leakage risk;

[0056] Step 2: When there is a leak at the pipe connection, the detector 102 detects the leakage signal of hydrogen sulfide and sends an alarm signal through the microcomputer;

[0057] Step 3: Open the solenoid valve in the injection pipe 201 to eject the inert gas in the gas storage ring 2;

[0058] Step 4: The ejected inert gas reduces the proportion of hydrogen sulfide and reduces the proportion of oxygen.

[0059] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Distributed explosion-proof device for the production line of sulfide solid electrolyte, including: Two symmetrically arranged explosion-proof rings (1) are characterized by further comprising: A locking assembly for sealing the two explosion-proof rings (1); A detector (102) is arranged in the explosion-proof ring (1); A gas storage ring (2) is arranged inside the explosion-proof ring (1); An air injection pipe (201) is arranged on one side of the air storage ring (2); When the detector (102) detects hydrogen sulfide leakage, the inert gas in the gas storage ring (2) is ejected through the injection pipe (201).

2. The distributed explosion-proof device for the production line of sulfide solid electrolyte according to claim 1, characterized in that: The locking assembly comprises a cylinder (104) symmetrically fixedly connected to the explosion-proof ring (1).

3. The distributed explosion-proof device for the production line of sulfide solid electrolyte according to claim 1, characterized in that: A detection ring (101) is fixedly connected inside the explosion-proof ring (1), a detection cavity (103) is provided inside the detection ring (101), the jet pipe (201) is arranged inside the detection cavity (103), and the detector (102) is fixedly arranged inside the detection ring (101).

4. The distributed explosion-proof device for the production line of sulfide solid electrolyte according to claim 3, characterized in that: The two ends of the detection ring (101) are symmetrically provided with corrugated surfaces (107).

5. The distributed explosion-proof device for the production line of sulfide solid electrolyte according to claim 1, characterized in that: A storage ring (3) is fixedly connected inside the explosion-proof ring (1); the storage ring (3) is arranged outside the gas storage ring (2); a cooling cavity (303) is arranged between the storage ring (3) and the gas storage ring (2); and an injection head (301) is arranged on a side of the storage ring (3) close to the cooling cavity (303).

6. The distributed explosion-proof device for the production line of sulfide solid electrolyte according to claim 5, characterized in that: The explosion-proof ring (1) is provided with a plurality of discharge pipes (302) which are in communication with the cooling cavity (303).

7. The distributed explosion-proof device for the production line of sulfide solid electrolyte according to claim 1, characterized in that: The explosion-proof ring (1) is provided with a supply pipe (204) connected to the gas storage ring (2); the supply pipe (204) is provided with a connecting pipe (205); one end of the connecting pipe (205) is fixedly connected to a connecting head (206); the connecting head (206) is threadedly sealed to the supply pipe (204).

8. The distributed explosion-proof device for the production line of sulfide solid electrolyte according to claim 3, characterized in that: The air injection pipe (201) is fixedly connected to an arc-shaped pipe (202) matching the detection ring (101), and the arc-shaped pipe (202) is provided with a plurality of air injection ports (203).

9. The distributed explosion-proof device for the production line of sulfide solid electrolyte according to claim 8, characterized in that: The arc-shaped tube (202) is arranged at the lower side of the detection cavity (103); the explosion-proof ring (1) is provided with an air leakage pipe (105) which is in communication with the detection cavity (103); the air leakage pipe (105) is arranged at the upper side of the detection cavity (103); an exhaust pipe (106) is fixedly connected between the two air leakage pipes (105); and a secondary explosion-proof box (4) is also included; an air intake pipe (401) is arranged at the air intake end of the secondary explosion-proof box (4); and the air intake pipe (401) is in communication with the exhaust pipe (106).

10. A distributed explosion-proof method for a production line of a sulfide solid electrolyte, using the distributed explosion-proof device for a production line of a sulfide solid electrolyte according to claim 1, characterized in that: The main steps include: Step 1: Place two explosion-proof rings (1) on the pipeline with leakage risk; Step 2: When there is a leak at the pipeline connection, the detector (102) detects the leakage signal of hydrogen sulfide and sends an alarm signal through the microcomputer; Step 3, opening the electromagnetic valve in the gas injection pipe (201) to eject the inert gas in the gas storage ring (2); Step 4: The ejected inert gas reduces the proportion of hydrogen sulfide and reduces the proportion of oxygen.

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