Skid-mounted anti-explosion methanol filling device

Abstract

The invention belongs to the technical field of skid-mounted refueling equipment, and discloses a skid-mounted anti-explosion methanol filling device which comprises a skid frame and an operation room arranged on the skid frame, an oil storage tank and a refueling machine are arranged on the skid frame, the refueling machine is communicated with the oil storage tank through a hydraulic oil pump, the skid-mounted anti-explosion methanol filling device further comprises a fire extinguishing assembly arranged on the skid frame, and the fire extinguishing assembly comprises a detector. The detector comprises a smoke sensor, a temperature sensor, a gas sensor and a flame sensor; the detector is used for detecting flames and sending alarm information to the operation room; the fire extinguisher is electrically connected with the controller; the fireproof rolling shutter door is arranged on a door frame of the operation room, and the fireproof rolling shutter door is an electric fireproof rolling shutter door and is electrically connected with the controller; according to the scheme, through the detector, the fire extinguisher and the electric fireproof rolling shutter door, fire monitoring and active fire extinguishing are achieved; the skid-mounted refueling device solves the problem that an existing skid-mounted refueling device cannot extinguish fire actively.

Description

Technical Field

[0001] This solution belongs to the technical field of skid-mounted fueling equipment, and specifically relates to a skid-mounted explosion-proof methanol filling device. Background Art

[0002] The skid-mounted filling device, also known as a skid-mounted gas station, is a ground-mobile gas station integrating a storage oil tank and a fuel dispenser. The storage oil tank is filled with explosion-proof materials. When encountering open fire, static electricity, lightning strike, shooting, welding or accidental violent impact, it will not explode, and has the characteristics of fire prevention and explosion protection.

[0003] Referring to the literature with the existing publication (announcement) number CN116513119A, it discloses an earthquake-resistant and explosion-proof skid-mounted fueling device, including a fuel dispenser, an unloading oil pump and a double-layer explosion-proof storage oil tank with explosion-proof materials. The fuel dispenser and the unloading oil pump are both arranged at one end inside the earthquake-resistant frame. The outside of the double-layer explosion-proof storage oil tank with explosion-proof materials is arranged inside the earthquake-resistant frame through a plurality of oil tank earthquake-resistant units. The bottom surface of the earthquake-resistant frame is arranged on the top surface of the shock isolation base, and the bottom surface of the shock isolation base is arranged in the middle of the top surface of the main base. A protective weir is arranged on the outside of the shock isolation base and the top surface of the main base.

[0004] For example, the above skid-mounted fueling device reduces the shaking of the double-layer explosion-proof storage oil tank with explosion-proof materials through the frame earthquake-resistant unit, thereby further reducing the risk of oil tank explosion. However, the existing skid-mounted fueling devices mainly prevent fires through explosion-proof materials. However, in the event of a fire, relying solely on explosion-proof materials is not enough, because this material can only passively prevent explosions and cannot actively extinguish an already-occurred fire. This may result in the fire not being controlled in a timely manner in the initial stage, spreading to other areas, and increasing fire losses and safety risks. Summary of the Invention

[0005] The purpose of this solution is to provide a skid-mounted explosion-proof methanol filling device to solve the problem that the existing skid-mounted fueling devices cannot actively extinguish fires.

[0006] To achieve the above purpose, this solution provides a skid-mounted explosion-proof methanol filling device, including a skid frame and an operation room arranged on the skid frame. A storage oil tank and a fuel dispenser are arranged on the skid frame. The fuel dispenser is connected to the storage oil tank through a hydraulic oil pump. It also includes a fire extinguishing component arranged on the skid frame. The fire extinguishing component includes: A detector, which includes a smoke sensor, a temperature sensor, a gas sensor and a flame sensor; the detector is used to detect flames and send alarm information to the controller; A fire extinguisher, which is electrically connected to the controller; A fireproof rolling shutter door, which is arranged on the door frame of the operation room. The fireproof rolling shutter door is an electric fireproof rolling shutter door and is electrically connected to the controller.

[0007] The principle of this solution is as follows: Fire is monitored through smoke, temperature, gas, and flame sensors, and when an anomaly is detected, an alarm message is sent to the operation room. Then, after receiving the alarm signal, the fire extinguisher sprays the fire extinguishing agent to extinguish the incipient fire. The electric fireproof rolling shutter can automatically close during a fire to prevent the fire from spreading to the operation room.

[0008] The effect of this solution is as follows: Through smoke, temperature, gas, and flame sensors, as well as fire extinguishers and electric fireproof rolling shutters, fire monitoring and active fire extinguishing are carried out, solving the problem that existing skid-mounted fuel filling devices cannot actively extinguish fires during a fire.

[0009] Furthermore, an alarm is also provided on the skid frame, and the alarm is electrically connected to the controller; a platform ladder and an explosion-proof ceiling lamp are also provided on the skid frame; a liquid level gauge and a manhole cover are provided on the storage tank; a breather valve connection socket is provided at the top of the storage tank, and the breather valve connection socket is connected to a breather valve.

[0010] The principle and effect of this solution are as follows: By setting an alarm, a platform ladder, an explosion-proof ceiling lamp, and by setting a liquid level gauge, a manhole cover, and a breather valve connection socket connected to a breather valve on the storage tank, the safety of the skid-mounted explosion-proof methanol filling device is further improved.

[0011] Furthermore, the breather valve includes a positive pressure valve body and a negative pressure valve body that communicate with each other. The positive pressure valve body is provided with a downward-opening installation port and an upward-opening positive pressure installation port; the negative pressure valve body is provided with a downward-opening negative pressure installation port; the breather valve also includes a positive pressure valve core and a negative pressure valve core, and the positive pressure valve core and the negative pressure valve core are respectively arranged on the positive pressure installation port and the negative pressure installation port; flame arresters are provided on both the positive pressure installation port and the negative pressure installation port, and a dust-proof net is provided outside the flame arresters.

[0012] The principle and effect of this solution are as follows: The breather valve in this solution is a split-type gravity breather valve, and flame arresters and dust-proof nets are respectively arranged on the positive pressure installation port and the negative pressure installation port to prevent flames from surging into the oil tank and prevent dust and impurities from entering the breather valve.

[0013] Furthermore, both the positive pressure valve core and the negative pressure valve core include a cylinder body and a valve stem. A piston and a spring are arranged in the cylinder body. The piston slides in the cylinder body and is fixedly connected to the spring. The free end of the spring is fixedly connected to the inner wall of the cylinder body. The piston is fixedly connected to the valve stem, and the valve stem is connected to a valve flap. The two valve flaps are respectively arranged on the positive pressure installation port and the negative pressure installation port; a cleaning assembly for cleaning the flame arrester and the dust-proof net is provided on the negative pressure valve core.

[0014] The principle and effect of this solution are as follows: (1) Most of the current breather valves are gravity breather valves, and the opening pressure of the breather valve is determined by the weight of the counterweight. The main problems existing in the gravity breather valve are as follows: The sealing performance of the sealing surface of the valve disc of the breather valve is not very good. When the pressure inside the gravity breather valve has not reached the opening pressure, there is often a small amount of gas leakage, resulting in serious environmental pollution and a large waste of material resources. Secondly, the response speed of the gravity breather valve is slow and the control accuracy is low. Especially when the valve disc of the breather valve descends, due to the action of hydrodynamic force, the valve disc cannot be closed in time, resulting in a waste of material resources (see CN112664690A for reference). (2) In this solution, a piston, a cylinder body and a spring are arranged at one end of the valve rod. When the pressure in the storage oil tank changes, the valve flap drives the valve rod to move, so that the piston slides in the cylinder body and compresses the spring, thereby realizing the sealing and opening of the valve flap. When the pressure in the storage oil tank does not reach the set opening pressure, the elastic force of the spring keeps the valve flap sealed with the valve body, avoiding the gas leakage problem of the gravity breather valve when the opening pressure is not reached. When the pressure inside and outside the storage oil tank is balanced, the pre-tightening force of the spring quickly drives the valve flap to reset, avoiding the problem of delayed closing of the valve flap due to the action of hydrodynamic force. (3) When the storage oil tank is in a negative pressure state, air needs to be inhaled from the outside to maintain the pressure balance in the tank. The inhaled air usually contains dust particles. When passing through the flame arrester and dust-proof net of the negative pressure valve body, it will be blocked and filtered by the internal structure of the flame arrester, and the dust particles are easily deposited in the flame arrester and dust-proof net, resulting in the blockage of their pores, thus affecting the air intake of the breather valve. Therefore, a cleaning component is provided to remove dust from the flame arrester and dust-proof net of the negative pressure valve body.

[0015] Furthermore, the cleaning component includes an air delivery pipe, the air delivery pipe is arranged inside the valve rod, one end of the air delivery pipe passes through the piston and communicates with the cylinder body, and the free end passes through the valve flap and faces the flame arrester and the dust-proof net.

[0016] The principle and effect of this solution are as follows: When the storage oil tank is in a negative pressure state, the valve flap will move away from the negative pressure installation port, and the outside air is inhaled into the storage oil tank. The valve flap and the valve rod move upward, driving the piston to move upward in the cylinder body, squeezing the space inside the cylinder body, squeezing the gas inside the cylinder body into the air delivery pipe, and spraying out from the free end of the air delivery pipe. The sprayed gas blows towards the flame arrester and the dust-proof net, thereby removing dust and cleaning them.

[0017] Furthermore, the free end of the air delivery pipe is rotatably connected with a sleeve, the sleeve communicates with the air delivery pipe, the outer wall of the sleeve is provided with fan blades, the fan blades are provided with cavities, the cavities communicate with the air delivery pipe, the fan blades are provided with spray holes, and the spray holes are inclined on the side surface of the fan blades and close to the edge of the fan blades.

[0018] The principle and effect of this solution are as follows: The gas enters the cavity of the fan blade through the sleeve connected to the air supply pipe, and then sprays out from the spray holes that are inclined and arranged on the side of the fan blade near the edge. The inclined arrangement of the spray holes makes the sprayed gas have a thrust towards the flame arrester and the dust-proof net, and also has a component force along the tangential direction of the fan blade, thereby driving the fan blade to rotate around its axis. This enables the sprayed gas to circumferentially cover a larger area of the flame arrester and the dust-proof net, improving the cleaning effect.

[0019] Furthermore, the sleeve is provided with a cam, and the flame arrester is provided with a bump, and the cam is used to intermittently strike the bump.

[0020] The principle and effect of this solution are as follows: When blowing back against the flame arrester and the dust-proof net, the rotation of the fan blade drives the rotation of the cam, causing the cam to intermittently collide with the bump, thereby making the flame arrester and the dust-proof net vibrate, and having a better cleaning effect on the flame arrester and the dust-proof net.

[0021] Furthermore, the bump is a flexible bump; a one-way valve is provided on the air supply pipe.

[0022] The principle and effect of this solution are as follows: It avoids the rigid bump being stuck when colliding with the knocking block; the one-way valve enables the gas in the cylinder to be squeezed into the air supply pipe for temporary storage when the breathing valve inhales, preventing the gas from flowing back into the cylinder.

[0023] Furthermore, a wedge-shaped groove is provided in the sleeve, a sealing ball is provided in the wedge-shaped groove, the sealing ball is used to block the wedge-shaped groove, the sealing ball is an iron ball, and a magnet for attracting the sealing ball is provided in the negative pressure installation port.

[0024] The principle and effect of this solution are as follows: (1) When the valve flap and the valve stem move upward, the sealing ball is driven away from the magnet. After the sealing ball loses the attraction of the magnet, it drops into the wedge-shaped groove, thereby sealing the air supply pipe, and at this time the gas will not spray out. When the internal and external pressures of the breathing valve are balanced, the valve flap and the valve stem reset to the initial position, and the sealing ball is attracted by the magnet away from the wedge-shaped groove, and the gas stored in the air supply pipe sprays out from the wedge-shaped groove into the cavity and finally sprays out through the spray holes. (2) The gas in this solution sprays out with a time delay after the pressure in the oil storage tank is balanced. After the valve flap touches the negative pressure installation port, the flame arrester and the dust-proof net are dusted, thereby avoiding dusting when the valve flap opens and causing dust to be inhaled into the oil storage tank.

[0025] Furthermore, the sealing ball is connected with a return spring, and the free end of the return spring is fixedly connected to the wedge-shaped groove; a torsion spring for resetting the sleeve is arranged through the sleeve.

[0026] The principle and effect of this solution are as follows: After the sealing ball moves away from the magnet, the return spring drives the sealing ball to reset and seal the wedge-shaped groove. The fan blade will move upward when the breathing valve inhales, and the torsion spring is arranged to make the fan blade reset to the initial position, so that the fan blade will not touch the magnet when moving upward. Brief Description of the Drawings

[0027] Figure 1 It is a schematic structural diagram of a skid-mounted explosion-proof methanol filling device of the present invention Figure 1 ; Figure 2 It is a schematic structural diagram of a skid-mounted explosion-proof methanol filling device of the present invention Figure 2 ; Figure 3 It is a schematic internal structure diagram of the breather valve of the present invention; Figure 4 It is a schematic internal structure diagram of the negative pressure valve body of the present invention; Figure 5 It is a schematic structural diagram of the cleaning component of the present invention Figure 1 ; Figure 6 It is a schematic structural diagram of the cleaning component of the present invention Figure 2 ; Figure 7 It is a schematic structural diagram of the cleaning component of the present invention Figure 3 ; Figure 8 It is a schematic structural diagram of the cleaning component of the present invention Figure 4 ; Figure 9 It is a schematic structural diagram of the cleaning component of the present invention Figure 5 .

[0028] The reference numerals in the drawings of the specification include: pipeline 1 of the first operation room, oil storage tank 2, platform ladder 3, liquid level gauge 4, breather valve connection pipe seat 5, barrier explosion-proof material 6, manhole cover 7, interlayer oil leakage detection device 8, breather valve 9, positive pressure valve body 91, installation port 911, positive pressure installation port 912, negative pressure valve body 92, negative pressure installation port 921, positive pressure valve core 93, negative pressure valve core 94, flame arrester 95, dust-proof net 96, cylinder block 97, valve stem 98, piston 99, spring 910, valve flap 920, through groove 9201, skid frame 10, fire extinguisher 11, pipeline 12 of the second operation room, explosion-proof ceiling lamp 13, explosion-proof control device 14, fireproof rolling shutter 15, fuel dispenser 16, cleaning component 17, air supply pipe 171, fan blade 172, cavity 1721, spray hole 1722, cam 173, convex block 174, sealing ball 175, return spring 1751, magnet 176, sleeve 177, wedge-shaped groove 1771, corrugated pipe 178, connecting pipe 179, driving pipe 1710, air outlet 1711, motor 18, detector 19, alarm 20, cable routing diagram 21. Detailed Description of the Invention

[0029] The following will clearly and completely describe the concept of the present invention and the technical effects produced in combination with the embodiments, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention: Embodiment 1: Please refer to Figure 1 and Figure 2 , a skid-mounted explosion-proof methanol filling device, including a skid frame 10, an operation room, an oil storage tank 2, a fuel dispenser 16, a hydraulic oil pump and a fire extinguishing component. The skid frame 10 serves as a support structure. There are a cable pipe routing diagram 21 and a motor 18 on the skid frame 10; an oil storage tank 2 is also installed. The oil storage tank 2 is filled with a barrier explosion-proof material 6 to ensure that it will not explode in case of open fire, static electricity, impact, etc. The oil storage tank 2 is equipped with an interlayer oil leakage detection device 8, which adopts an ET-LLD-D double-layer tank leakage detector produced by Qingdao Aite Instrument Co., Ltd. This detector uses an optical probe as a sensing element to detect oil and water leakage in the interlayer of the double-walled oil tank and can automatically give out audible and visual alarms, and is electrically connected to the controller through the second operation room pipeline 12. There is also an explosion-proof control device 14 on the skid frame 10, which adopts a BYK skid-mounted equipment explosion-proof control cabinet. The oil storage tank 2 is connected to the fuel dispenser 16 through a hydraulic oil pump. The hydraulic oil pump pressurizes the methanol fuel in the oil storage tank and transports it to the fuel dispenser 16. The fire extinguishing component includes a detector 19, a fire extinguisher 11 and a fireproof rolling shutter 15. The detector 19 includes a smoke sensor, a temperature sensor, a gas sensor and a flame sensor, and is installed on the skid frame 10 to monitor the fire risk in real time. Once a flame or other abnormal situation is detected, the detector 19 will send an alarm message to the controller. The controller is installed in the operation room and is electrically connected to the detector 19, the fire extinguisher 11 and the fireproof rolling shutter 15 through the first operation room pipeline 1, and is responsible for receiving the signal of the detector 19 and controlling the actions of the fire extinguisher 11 and the fireproof rolling shutter 15. When the controller receives the alarm signal, the fire extinguisher 11 will be automatically activated to spray the fire extinguishing agent to extinguish the initial fire. The fireproof rolling shutter 15 is installed on the door frame of the operation room and is an electric fireproof rolling shutter 15, which is electrically connected to the controller. When a fire occurs, the fireproof rolling shutter 15 will automatically close to prevent the fire from spreading to the operation room. The controller is also electrically connected to an alarm 20, and the alarm 20 is used to give an alarm when a fire occurs to remind the on-site personnel. There are also a platform ladder 3 and an explosion-proof ceiling lamp 13 on the skid frame 10 to facilitate the operation and maintenance of the operators. The oil storage tank 2 is equipped with a liquid level gauge 4 and a manhole cover 7 for monitoring the liquid level and carrying out in-tank maintenance.

[0030] The storage oil tank 2 is filled with the explosion isolation and prevention material 6 produced by Jiangsu Anpute Explosion-proof Technology Co., Ltd. The fuel dispenser 16 can be a Jin Nuo fuel dispenser. The hydraulic oil pump can be a plunger pump or a gear pump. The smoke sensor in the detector 19 can be a honeywell smoke sensor. The fire extinguisher 11 can be a dry powder fire extinguisher or a carbon dioxide fire extinguisher. The fireproof rolling shutter door 15 can be a Dahua fireproof rolling shutter door. The controller can be a Siemens S7 series PLC controller. The alarm 20 can be a Honeywell alarm. The platform escalator 3 can be a common escalator model on the market. The explosion-proof ceiling lamp 13 can be a Philips explosion-proof ceiling lamp. The liquid level gauge 4 can be a Rosemount liquid level gauge. The manhole cover 7 can be a common manhole cover model on the market.

[0031] Please refer to Figures 1 - 3 , on the top of the storage oil tank 2 (see Figure 1 ), a breather valve connection pipe seat 5 (material Q235B, DN150) is welded. The breather valve connection pipe seat 5 is connected with a breather valve 9 (model FZW-0.6) through a flange. A split-type gravity breather valve 9 is adopted. The breather valve 9 is composed of a positive pressure valve body 91 (cast aluminum ZL104) and a negative pressure valve body 92 (cast aluminum ZL104) connected. Among them, at the bottom of the positive pressure valve body 91, there is a downward-opening installation port 911 (DN80) for docking with the pipe seat 5, and at the top, it extends upward to form a positive pressure installation port 912 (DN50). At the bottom of the negative pressure valve body 92, there is a downward-opening negative pressure installation port 921 (DN50); both the positive pressure installation port 912 and the negative pressure installation port 921 are successively installed with flame arresters 95 (stainless steel ZHQ-III type, mesh number 300 meshes) and dust-proof nets 96 (304 stainless steel punched mesh, aperture 1mm). Positive pressure valve cores 93 and negative pressure valve cores 94 (cylinder body 97 material 304 stainless steel, inner diameter φ40mm) are respectively assembled at the two valve ports. Inside the valve core, there is a piston 99 (nitrile rubber sealing ring) and a spring 910 (65Mn steel, elastic coefficient 8N / mm). The piston 99 is connected to a valve flap 920 (polytetrafluoroethylene material, diameter φ55mm) through a valve stem 98 (φ10mm stainless steel rod). The valve stem 98 is a hollow structure. The piston 99 slides inside the cylinder body 97 and is fixedly connected to the spring 910. The free end of the spring 910 is fixedly connected to the inner wall of the cylinder body 97. The piston 99 is fixedly connected to the valve stem 98. The valve stem 98 is connected with a valve flap 920. The two valve flaps 920 are respectively arranged on the positive pressure installation port 912 and the negative pressure installation port 921. Among them, a cleaning component 17 is integrated inside the cylinder body 97 of the negative pressure valve core 94 for dust removal and cleaning of the flame arrester 95 and the dust-proof net 96 of the negative pressure valve core 94.

[0032] Specific working principle: When the pressure in the storage oil tank 2 changes, the valve flap 920 drives the valve rod 98 to move, causing the piston 99 to slide in the cylinder block 97 and compress the spring 910, thereby realizing the sealing and opening of the valve flap 920. When the pressure in the storage oil tank 2 does not reach the set opening pressure, the elastic force of the spring 910 keeps the valve flap 920 sealed with the valve body, avoiding the gas leakage problem of the gravity breathing valve when the opening pressure is not reached. When the pressure inside and outside the storage oil tank 2 is balanced, the pre-tightening force of the spring 920 quickly drives the valve flap 920 to reset, avoiding the problem of delayed closing of the valve flap 920 caused by the hydrodynamic force.

[0033] Please refer to Figures 4 - 6 , the air supply pipe 171 of the cleaning component 17 is arranged inside the valve rod 98 of the negative pressure valve core 94. Its upper end passes through the piston 99 and communicates with the inner cavity of the cylinder block 97, and its lower end passes through the valve flap 920 and is connected to the sleeve 177 through a rotary joint. Three groups of fan blades 172 (with a thickness of 2 mm) are evenly distributed in the circumferential direction on the outer wall of the sleeve 177. A hollow cavity 1721 communicating with the air supply pipe 171 is arranged inside each fan blade 172, and a plurality of spray holes 1722 (with a diameter of φ0.5 mm and a spacing of 10 mm) inclined at 45° are arranged on the side edge; a cam 173 (made of 304 stainless steel with a lift of 5 mm) is welded to the bottom end of the sleeve 177, and a flexible convex block 174 (made of silica gel with a height of 8 mm) is arranged corresponding to the outer edge of the flame arrester 95; a tapered groove 1771 with a taper of 1:5 is machined inside the sleeve 177, and an iron sealing ball 175 with a diameter of φ8 mm is arranged inside and connected to the tapered groove 1771 through a return spring 1751 (with a wire diameter of 0.5 mm). A N52 grade neodymium iron boron magnet 176 is embedded in the corresponding negative pressure installation port 921 for attracting the sealing ball 175; a torsion spring (with a torque of 0.2 N·m) is arranged through the sleeve 177 to realize rotational reset. When the storage oil tank 2 is in negative pressure, the valve flap 920 drives the valve rod 98 to move up 20 mm, and the piston 99 compresses the spring 910 so that the gas in the cylinder block 97 enters the air supply pipe 171 through the one-way valve and is temporarily stored. At this time, the sealing ball 175 is far away from the tapered groove 1771, and the sealing ball is reset under the drive of the return spring 910 to seal the tapered groove 1771; when the pressure balance valve flap 920 resets and closes, the sealing ball 175 is attracted by the magnet 176, so as to be far away from the tapered groove 1771. The compressed gas with a pressure of 0.3 MPa in the air supply pipe 171 sprays out from the tapered groove 1771, passes through the fan blade cavity 1721 and sprays out from the spray holes 1722 at high speed. The reaction force drives the fan blades 172 to rotate at 200 r / min. At the same time, the cam 173 impacts the convex block 174 every turn to generate vibration, realizing the rotary spraying and vibration dust removal of the flame arrester 95 and the dust-proof net 96; after the cleaning is completed, the torsion spring drives the sleeve 177 and the fan blades 172 to reset.

[0034] Embodiment 2: The difference between this embodiment and the previous embodiment lies in the setting of the cleaning component 17. Please refer to Figures 7 - 9, the sealing ball 175, the return spring 1751, the magnet 176 and the wedge groove 1771 move upward into the air supply pipe 171 and are arranged above the valve flap 920. The wedge groove 1771 is arranged in the air supply pipe 171. The sealing ball 175 and the return spring 1751 are both arranged in the wedge groove 1771 of the air supply pipe 171, and the magnet 176 is arranged outside the air supply pipe 171. The valve flap 920 is provided with a through groove 9201, and the cleaning assembly 17 is located in the through groove 9201; the cleaning assembly 17 includes a corrugated pipe 178, a connecting pipe 179 and a driving pipe 1710. One end of the corrugated pipe 178 is communicated with the air supply pipe 171, the free end of the corrugated pipe 178 is communicated with the connecting pipe 179, the free end of the connecting pipe 179 is communicated with the driving pipe 1710, and the free end of the driving pipe 1710 is provided with an air outlet 1711. The connecting pipe 179 and the driving pipe 1710 are both made of flexible materials, such as airbag materials. The connecting pipe 179 is the connecting pipe 179 after rotating one circle (twisting one circle) along the central axis of the air supply pipe 171. After the connecting pipe 179 and the driving pipe 1710 are filled with gas, the twisted connecting pipe 179 is reset under the action of the gas, thereby driving the connecting pipe 179 and the driving pipe 1710 to rotate one circle along the central axis of the air supply pipe 17121, so that the driving pipe 1710 rotates to collide with the convex block 174 and drives the air outlet 1711 to rotate one circle circumferentially, and dust is removed circumferentially from the flame arrester 95 and the dust-proof net 96. After the driving pipe 1710 rotates one circle, the gas does not fill the driving pipe 1710. After the gas fills the driving pipe 1710 again, the driving pipe 1710 rotates one circle again.

[0035] In the cleaning assembly 17 of this solution, the corrugated pipe 178, the connecting pipe 179 and the driving pipe 1710 are provided, and they are all made of flexible materials. When the corrugated pipe 178, the connecting pipe 179 and the driving pipe 1710 are filled with gas, the corrugated pipe 178, the connecting pipe 179 and the driving pipe 1710 are all in a contracted state, so that the corrugated pipe 178 drives the connecting pipe 179 and the driving pipe 1710 to contract into the through groove 9201, and will not occupy the space of the negative pressure installation port 921 for breathing, thereby avoiding using structures such as the fan blade 172 and preventing obstruction of inhalation when the breathing valve 9 inhales.

[0036] The above are only embodiments of the present invention. Common general knowledge such as specific structures and characteristics in the solution is not described in detail here. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners in the specification can be used to explain the content of the claims.

Claims

1. A skid-mounted explosion-proof methanol filling device, comprising a skid frame (10) and an operating room arranged on the skid frame (10), wherein the skid frame (10) is provided with an oil storage tank (2) and a refueling machine (16), wherein the refueling machine (16) is connected to the oil storage tank (2) via a hydraulic oil pump, and characterized in that: It also includes a fire extinguishing assembly arranged on the skid frame (10), the fire extinguishing assembly comprising: A detector (19), the detector (19) comprising a smoke sensor, a temperature sensor, a gas sensor and a flame sensor; the detector (19) is used to detect flames and send alarm information to a controller; A fire extinguisher (11), the fire extinguisher (11) being electrically connected to the controller; A fireproof rolling shutter door (15), wherein the fireproof rolling shutter door (15) is arranged on a door frame of an operating room, and the fireproof rolling shutter door (15) is an electric fireproof rolling shutter door and is electrically connected to a controller.

2. The skid-mounted explosion-proof methanol filling device according to claim 1 is characterized in that: The skid frame (10) is also provided with an alarm (20), and the alarm (20) is electrically connected to the controller; the skid frame (10) is also provided with a platform ladder (3) and an explosion-proof ceiling lamp (13); the oil storage tank (2) is provided with a liquid level meter (4) and a manhole cover (7); the top of the oil storage tank (2) is provided with a breathing valve pipe socket (5), and the breathing valve pipe socket (5) is connected to a breathing valve (9).

3. The skid-mounted explosion-proof methanol filling device according to claim 2 is characterized in that: The breathing valve (9) comprises a positive pressure valve body (91) and a negative pressure valve body (92) which are interconnected, the positive pressure valve body (91) being provided with a mounting opening (911) opening downward and a positive pressure mounting opening (912) opening upward; the negative pressure valve body (92) being provided with a negative pressure mounting opening (921) opening downward; the breathing valve (9) further comprises a positive pressure valve core (93) and a negative pressure valve core (94), the positive pressure valve core (93) and the negative pressure valve core (94) being respectively arranged on the positive pressure mounting opening (912) and the negative pressure mounting opening (921); the positive pressure mounting opening (912) and the negative pressure mounting opening (921) are both provided with a flame arrester (95), and a dustproof net (96) is provided on the outer side of the flame arrester (95).

4. The skid-mounted explosion-proof methanol filling device according to claim 3 is characterized in that: The positive pressure valve core (93) and the negative pressure valve core (94) both comprise a cylinder body (97) and a valve stem (98); a piston (99) and a spring (910) are arranged in the cylinder body (97); the piston (99) is slidably arranged in the cylinder body (97) and is fixedly connected to the spring (910); the free end of the spring (910) is fixedly connected to the inner wall of the cylinder body (97); the piston (99) is fixedly connected to the valve stem (98); the valve stem (98) is connected to a valve flap (920); the two valve flaps (920) are respectively arranged on the positive pressure mounting port (912) and the negative pressure mounting port (921); and a cleaning component (17) for cleaning the flame arrester (95) and the dust screen (96) is arranged on the negative pressure valve core (94).

5. The skid-mounted explosion-proof methanol filling device according to claim 4 is characterized in that: The cleaning assembly (17) comprises an air supply pipe (171), wherein the air supply pipe (171) is arranged in a valve stem (98), one end of the air supply pipe (171) passes through the piston (99) and is connected to the cylinder body (97), and the free end passes through the valve disc (920) and faces the flame arrester (95) and the dust screen (96).

6. The skid-mounted explosion-proof methanol filling device according to claim 5, characterized in that: The free end of the air supply pipe (171) is rotatably connected to a sleeve (177), the sleeve (177) being in communication with the air supply pipe (171), a fan blade (172) being provided on an outer wall of the sleeve (177), the fan blade (172) being provided with a cavity (1721), the cavity (1721) being in communication with the air supply pipe (171), the fan blade (172) being provided with a spray hole (1722), the spray hole (1722) being obliquely arranged on a side surface of the fan blade (172) and close to an edge of the fan blade (172).

7. The skid-mounted explosion-proof methanol filling device according to claim 6 is characterized in that: The sleeve (177) is provided with a cam (173), the flame arrester (95) is provided with a protrusion (174), and the cam (173) is used to intermittently impact the protrusion (174).

8. The skid-mounted explosion-proof methanol filling device according to claim 7 is characterized in that: The protrusion (174) is a flexible protrusion (174); and a one-way valve is provided on the air supply pipe (171).

9. The skid-mounted explosion-proof methanol filling device according to claim 7, characterized in that: A wedge-shaped groove (1771) is provided in the sleeve (177), a sealing ball (175) is provided in the wedge-shaped groove (1771), the sealing ball (175) is used to seal the wedge-shaped groove (1771), the sealing ball (175) is an iron ball, and a magnet (176) is provided in the negative pressure installation port (921) for attracting the sealing ball (175).

10. The skid-mounted explosion-proof methanol filling device according to claim 9, characterized in that: The sealing ball (175) is connected to a return spring (1751), and the free end of the return spring (1751) is fixedly connected to the wedge-shaped groove (1771); the sleeve (177) is provided with a torsion spring for returning the sleeve (177).

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