Pneumatic quick water injection valve of liquefied hydrocarbon storage tank

Abstract

The invention discloses a pneumatic rapid water injection valve of a liquefied hydrocarbon storage tank, and aims to solve the problems that in an existing water injection system, operation is complex, efficiency is low, and the water injection speed is difficult to control The water injection valve comprises a telescopic air cylinder, a valve body, a valve element, a water outlet valve piece and a water inlet valve piece. According to the system, the water injection speed can be adjusted in real time in the water injection process, operation simplicity and safety are guaranteed, the number of valves for manual operation is reduced through structure optimization, and the water injection efficiency is improved. The water injection efficiency is improved; the failure rate is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of water injection valves, in particular to a pneumatic rapid water injection valve for a liquefied hydrocarbon storage tank. Background Art

[0002] Liquefied hydrocarbon storage tanks are widely used to store flammable and explosive substances such as liquefied natural gas and liquefied petroleum gas. In the daily maintenance, cleaning or emergency firefighting of these storage tanks, water injection operation is a key link to ensure safety. In the prior art, the commonly used water injection system mainly relies on traditional manual valves for control. This design has the following defects in practical applications: 1. In the prior art, in order to quickly and safely introduce water into the storage tank, multiple independent water inlet valves and outlet valves usually need to be manually operated. This multi-valve design not only increases the complexity of the operation, but also in an emergency, manual operation of multiple valves is prone to errors, affecting the overall water injection speed and safety. In addition, the operator needs to remember and correctly execute the opening and closing sequence of each valve, which undoubtedly increases the operating burden and reduces work efficiency; 2. As the existing water injection system mostly relies on manually controlled valves, the operation steps are cumbersome, resulting in a long time-consuming water injection work. In emergency firefighting scenarios, this inefficient water injection method is difficult to respond to emergencies quickly, which may cause delays in accident handling. Therefore, the problem of low water injection efficiency has become an important defect in the existing technology; 3. During the water injection process of the liquefied hydrocarbon storage tank, in order to ensure the pressure balance in the tank and the safety of the tank structure, the water injection speed must be adjusted according to actual needs. However, the manual valves in the prior art often lack accurate flow control means. The operator needs to rely on experience to manually adjust the valve opening to achieve a certain water injection speed. This method not only requires high skills of the operator, but also makes it difficult to ensure the stability of the water injection speed, and there are certain safety hazards; 4. During the water injection process, operators must constantly monitor and adjust multiple valves to control the injection speed and volume. This real-time control of valves not only increases the difficulty of operation, but also places high demands on the professional skills and reaction speed of operators, which is prone to misoperation and further increases safety risks. This application is proposed to address the deficiencies in the above-mentioned prior art. Summary of the invention

[0003] In view of the above-mentioned deficiencies existing in the prior art, an object of the present invention is to provide a water injection valve which reduces the operation steps, speeds up the water injection efficiency and can adjust the water injection speed.

[0004] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a pneumatic fast water injection valve for a liquefied hydrocarbon storage tank, comprising a telescopic cylinder, a valve body, a valve core, a water outlet valve member and a water inlet valve member, the valve body is slidably connected with the valve core, a water injection channel is arranged inside the valve core, a water inlet pipe is fixedly connected to the valve core, the water inlet pipe is communicated with the water injection channel, a movement port is arranged on the valve body, the water inlet pipe is located in the movement port, one end of the valve body is fixedly connected with the telescopic cylinder, the piston end of the telescopic cylinder is fixedly connected with the valve core, the other end of the valve body is fixedly connected with the water outlet pipe, the water outlet pipe cooperates with the water injection channel, so that when the telescopic cylinder pushes the valve core to move linearly, the water outlet pipe can be inserted into the water injection channel, and the water outlet pipe and the water injection channel are sealed; The end of the water outlet pipe located outside is fixedly connected to the water outlet valve member, and the end of the water inlet pipe is fixedly connected to the water inlet valve member. Power transmission is achieved between the valve core and the water outlet valve member via a first linkage component, and power transmission is achieved between the valve core and the water inlet valve member via a second linkage component. When the telescopic cylinder pushes the valve core to connect with the water outlet pipe, the water outlet valve member and the water inlet valve member are both in an open state. When the telescopic cylinder drives the valve core to separate from the water outlet pipe, the water outlet valve member and the water inlet valve member are both in a closed state.

[0005] In the above technical solution, the sliding connection structure between the valve core and the valve body is: Two groups of sliding keys are fixedly connected to the valve core, and sliding grooves are provided on the valve body to match the sliding keys. The sliding keys are slidably connected in the sliding grooves, and power transmission is achieved between one group of the sliding keys and the water outlet valve member through a first linkage assembly.

[0006] In the above technical solution, in order to ensure excellent sealing performance after the water outlet pipe and the valve core are plugged in, multiple sets of sealing rings are fixedly connected to the inner wall of the water injection channel.

[0007] In the above technical solution, the water outlet valve member adopts the following structure: The water outlet valve component includes a water outlet valve pipe, a water outlet butterfly valve plate and a water outlet valve shaft. The water outlet valve pipe is fixedly connected to the water outlet pipe, the water outlet valve shaft is rotatably connected to the water outlet valve pipe, the water outlet valve shaft is fixedly connected to the water outlet butterfly valve plate at the end portion of the water outlet valve shaft located in the water outlet valve pipe, and power transmission is achieved between the water outlet valve shaft and the sliding key via the first linkage assembly.

[0008] In the above technical solution, the water inlet valve member adopts the following structure: The water inlet valve component includes a water inlet valve pipe, a water inlet butterfly valve plate and a water inlet valve shaft. The water inlet valve pipe is fixedly connected to the water inlet pipe. The water inlet valve shaft is rotatably connected to the water inlet valve pipe. The end of the water inlet valve shaft located in the water inlet valve pipe is fixedly connected to the water inlet butterfly valve plate. The water inlet valve shaft and the second linkage assembly realize power transmission.

[0009] In the above technical solution, the coordination between the water outlet valve member and the valve core is achieved through the first linkage assembly of the following structure: The first linkage component includes a rotating disk, a pushing arm and a traction arm. A notch is provided on the valve body corresponding to the sliding groove. A moving platform is slidably connected in the notch. The moving platform is fixedly connected to the sliding key. The pushing arm is fixedly connected to the moving platform. A guide platform is fixedly connected to the valve body. The pushing arm is slidably connected to the guide platform. The end of the pushing arm is rotatably connected to the traction arm. The rotating disk is fixedly connected to the water outlet valve shaft. An eccentric shaft is fixedly connected to the rotating disk. One end of the traction arm is rotatably connected to the eccentric shaft.

[0010] In the above technical solution, the cooperation between the water inlet valve member and the valve core is achieved through the second linkage assembly of the following structure: The second linkage assembly includes a worm, a worm wheel, a gear and a rack. The worm wheel is fixedly connected to the water inlet valve shaft, the worm is rotatably connected to the water inlet valve pipe, the worm is meshingly connected to the worm wheel, the gear is fixedly connected to the worm, a mounting frame is fixedly connected to the valve body, the mounting frame is fixedly connected to the rack, the gear is meshingly connected to the rack, when the telescopic cylinder is in an original state, the gear is in a meshing state with the rack, and when the telescopic cylinder pushes the valve core to connect with the water outlet pipe, the gear is disengaged from the rack.

[0011] In the above technical solution, the following structure is used to realize the connection between the traction arm, the rotating disk and the pushing arm: A rotating groove is provided at the end of the pushing arm, one end of the traction arm is fixedly connected with a rotating shaft, the rotating shaft is rotatably connected in the rotating groove, the other end of the traction arm is fixedly connected with a rotating ring, the rotating ring is sleeved on the eccentric shaft, and the end of the eccentric shaft is also threadedly connected with a limiting nut.

[0012] In the above technical solution, in order to facilitate the disassembly and maintenance of the entire valve body, flanges are used to connect the water inlet pipe and the water inlet valve pipe, the water outlet pipe and the valve body, and the water outlet pipe and the water outlet valve pipe.

[0013] In the above technical solution, in order to realize remote and on-site control and viewing, the following structure is further provided: The telescopic cylinder is matched with an air supply system, and the air supply system includes a solenoid valve for controlling the operation of the telescopic cylinder; A water injection pipeline is fixedly connected between the water outlet valve member and the liquefied hydrocarbon storage tank, and a flow meter is provided on the water injection pipeline; A plurality of position sensors are fixedly connected inside the valve body, and a position detection head is provided on the valve core to match the position sensors; The valve body is fixedly connected with a control box, a control board with a single-chip microcomputer as the core and a wireless communication module are fixedly connected in the control box, a display module and a button module are fixedly connected to the outer wall of the control box, the flow meter, position sensor, solenoid valve, wireless communication module, display module and button module are all connected with the control board signal, and the wireless communication module is connected with a remote PC terminal through wireless signals.

[0014] Beneficial effects of the present invention: 1. The outlet valve can be connected to the pipeline between the liquefied hydrocarbon storage tank, and the inlet valve can be connected to the hose between the fire water supply station. When it is necessary to supply water from the fire water supply station to the liquefied hydrocarbon storage tank, the valve core can be pushed by the cylinder to move linearly until the outlet pipe and the water injection channel of the valve core are plugged in. At this time, under the action of the first linkage component, the outlet valve is opened. Similarly, under the action of the second linkage component, the inlet valve is opened. In this way, the water from the fire water supply station can enter the liquefied hydrocarbon storage tank through the hose, the inlet valve, the inlet pipe, the water injection channel, the outlet pipe, the outlet valve, and the pipeline in sequence. After completion, the valve core can be driven by the cylinder to move linearly, so that the valve core is separated from the water outlet pipe. At this time, under the action of the first linkage component, the water outlet valve is closed. Similarly, under the action of the second linkage component, the water inlet valve is closed, which can prevent the fire water station from continuing to supply water and prevent the water in the liquefied hydrocarbon storage tank from flowing out. When such a water injection valve is used for water injection, the number of valves opened can be reduced, thereby facilitating operation and achieving the effect of rapid water injection. In addition, the power of the telescopic cylinder can be used to automatically open and close the water outlet valve and the water inlet valve, thereby reducing the driving source and the valve failure rate. 2. When the telescopic cylinder drives the valve core to connect with the water outlet pipe, the valve core can synchronously drive the push arm to move linearly. When the push arm moves linearly, under the action of the traction arm, the rotating disk can be pushed to rotate, so that the rotating disk can drive the water outlet valve shaft in the water outlet valve to rotate, and then realize the rotation of the water outlet butterfly valve plate, so that the water outlet valve can be opened. At this time, when the valve core moves linearly, the water inlet pipe also moves synchronously. Under the action of the gear and the rack, the worm drives the worm wheel to rotate, which also causes the inlet butterfly valve plate to rotate, thereby opening the water outlet valve. When the water inlet valve member is opened and closed, the water inlet butterfly valve plate is kept in a final state, thereby controlling the flow rate of water injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of another perspective of the present invention; Figure 3 It is a structural schematic diagram of another perspective of the present invention; Figure 4 This is a schematic diagram of the external structure of the present invention when water is injected; Figure 5 This is a schematic diagram of the internal structure of the present invention when no water is injected; Figure 6 This is a schematic structural diagram of the first linkage assembly of the present invention when no water is injected; Figure 7 This is a schematic diagram of the structure of the first linkage assembly during water injection of the present invention; Figure 8 This is a schematic diagram of the internal structure of the present invention when water is injected; Fig. 9 for Figure 1 Schematic diagram of the detailed structure of part a in the middle; Fig.10 for Figure 1 Schematic diagram of the detailed structure of part b in the middle; Fig.11 for Figure 4 Schematic diagram of the detailed structure of part c in the middle; Fig.12 It is a schematic diagram of the structure of controlling signal transmission in the present invention.

[0016] In the figure: 100 telescopic cylinder, 101 solenoid valve; 200 valve body, 201 sliding groove, 202 water inlet pipe, 203 movement port, 204 position sensor; 300 valve core, 301 sliding key, 302 water injection channel, 303 water outlet pipe, 304 sealing ring, 305 position detection head; 400 water outlet valve member, 401 water outlet valve pipe, 402 water outlet butterfly valve plate, 403 water outlet valve shaft; 500 water inlet valve member, 501 water inlet valve pipe, 502 water inlet butterfly valve plate, 503 water inlet valve shaft; 600 first linkage assembly, 601 rotating disk, 602 pushing arm, 603 pulling arm, 604 notch, 605 moving platform, 606 guiding platform, 607 eccentric shaft, 608 rotating ring, 609 limiting nut; 700 second linkage assembly, 701 worm, 702 worm wheel, 703 gear, 704 rack, 705 mounting frame; 800 flow meter; 901 control panel, 902 wireless communication module, 903 key module, 904 remote PC terminal, 905 control box, 906 display module. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-5 , a pneumatic fast water injection valve for a liquefied hydrocarbon storage tank, comprising a telescopic cylinder 100, a valve body 200, a valve core 300, a water outlet valve member 400 and a water inlet valve member 500, wherein the valve body 200 is slidably connected with the valve core 300, that is, the valve core 300 is fixedly connected with two sets of sliding keys 301, the valve body 200 is provided with a sliding groove 201 matching the sliding key 301, and the sliding key 301 is slidably connected in the sliding groove 201, so that the valve core 300 can perform axial linear motion in the valve body 200, and the valve core 300 is provided with a water injection channel 302, the valve core 300 is also fixedly connected with a water inlet pipe 202, the water inlet pipe 202 is communicated with the water injection channel 302, the valve body 200 is provided with a movement port 203, and the water inlet pipe 202 is located in the movement port 203 to meet the linear motion of the valve core 300; In addition, a telescopic cylinder 100 is fixedly connected to one end of the valve body 200, and the piston end of the telescopic cylinder 100 is fixedly connected to the valve core 300. The telescopic cylinder 100 is matched with an air supply system, and the air supply system includes a solenoid valve 101 for controlling the operation of the telescopic cylinder 100, so that the valve core 300 can be driven to perform linear motion through the telescopic cylinder 100; The other end of the valve body 200 is fixedly connected with a water outlet pipe 303, and the water outlet pipe 303 cooperates with the water injection channel 302, so that when the telescopic cylinder 100 pushes the valve core 300 to move linearly, the water outlet pipe 303 can be inserted into the water injection channel 302, and the water outlet pipe 303 and the water injection channel 302 are sealed. Optimally, in order to ensure excellent sealing, multiple sets of sealing rings 304 are fixedly connected to the inner wall of the water injection channel 302; Furthermore, the end of the water outlet pipe 303 located outside is also fixedly connected to the water outlet valve member 400, and the water outlet valve member 400 includes a water outlet valve pipe 401, a water outlet butterfly valve plate 402 and a water outlet valve shaft 403. The water outlet valve pipe 401 is fixedly connected to the water outlet pipe 303, and the water outlet valve shaft 403 is rotatably connected to the water outlet valve pipe 401. The end of the water outlet valve shaft 403 located inside the water outlet valve pipe 401 is fixedly connected to the water outlet butterfly valve plate 402, and power transmission is realized between the water outlet valve shaft 403 and a group of sliding keys 301 through a first linkage assembly 600; The end of the water inlet pipe 202 is fixedly connected with a water inlet valve member 500, and the water inlet valve member 500 includes a water inlet valve pipe 501, a water inlet butterfly valve plate 502 and a water inlet valve shaft 503. The water inlet valve pipe 501 is fixedly connected with the water inlet pipe 202, and the water inlet valve shaft 503 is rotatably connected to the water inlet valve pipe 501. The end of the water inlet valve shaft 503 located in the water inlet valve pipe 501 is fixedly connected with the water inlet butterfly valve plate 502, and the water inlet valve shaft 503 realizes power transmission with the second linkage assembly 700; When the telescopic cylinder 100 pushes the valve core 300 to connect with the water outlet pipe 303, the water outlet valve member 400 and the water inlet valve member 500 are both in an open state under the action of the first linkage assembly 600 and the second linkage assembly 700. When the telescopic cylinder 100 drives the valve core 300 to separate from the water outlet pipe 303, the water outlet valve member 400 and the water inlet valve member 500 are both in a closed state. More specifically, the water outlet valve member 400 can be connected to the liquefied hydrocarbon storage tank through a pipeline, while the water inlet valve member 500 can be connected to the fire water supply station through a hose. When it is necessary to supply water from the fire water supply station to the liquefied hydrocarbon storage tank, the valve core 300 can be pushed by the cylinder to perform linear motion until the water outlet pipe 303 is connected to the water injection channel 302 of the valve core 300. At this time, under the action of the first linkage assembly 600, the water outlet valve member 400 is opened. Similarly, under the action of the second linkage assembly 700, the water inlet valve member 500 is opened. In this way, the water from the fire water supply station can enter the liquefied hydrocarbon storage tank through the hose, the water inlet valve 500, the water inlet pipe 202, the water injection channel 302, the water outlet pipe 303, the water outlet valve 400, and the pipeline in sequence. After the water injection is completed, the valve core 300 can be driven by the cylinder to move linearly, so that the valve core 300 and the water outlet pipe 303 are separated. At this time, under the action of the first linkage component 600, the water outlet valve 400 is closed. Similarly, under the action of the second linkage component 700, the water inlet valve 500 is closed. This can prevent the fire water station from continuing to supply water and prevent the water in the liquefied hydrocarbon storage tank from flowing out. When such a water injection valve is used for water injection, the number of valves opened can be reduced, thereby facilitating operation and achieving the effect of rapid water injection. In addition, the power of the telescopic cylinder 100 can be used to automatically open and close the water outlet valve 400 and the water inlet valve 500, thereby reducing the driving source and the valve failure rate.

[0019] See also Figure 1 , Figure 5-11 , a pneumatic fast water injection valve for a liquefied hydrocarbon storage tank, based on Example 1, this embodiment provides a structure of a first linkage assembly 600: The first linkage assembly 600 includes a rotating disk 601, a pushing arm 602 and a pulling arm 603. A notch 604 is provided on the valve body 200 corresponding to the sliding groove 201. A moving platform 605 is slidably connected in the notch 604. The moving platform 605 is fixedly connected to the sliding key 301. The pushing arm 602 is fixedly connected to the moving platform 605. A guide platform 606 is fixedly connected to the valve body 200. The pushing arm 602 is slidably connected to the guide platform 606. The end of the pushing arm 602 is rotatably connected to the pulling arm 603. The rotating disk 601 is fixedly connected to the water outlet valve shaft 403. , an eccentric shaft 607 is fixedly connected to the rotating disk 601, and one end of the traction arm 603 is rotatably connected to the eccentric shaft, so that when the telescopic cylinder 100 drives the valve core 300 to plug into the water outlet pipe 303, the valve core 300 can synchronously drive the push arm 602 to move linearly. When the push arm 602 moves linearly, under the action of the traction arm 603, the rotating disk 601 can be driven to rotate, so that the rotating disk 601 can drive the water outlet valve shaft 403 in the water outlet valve member 400 to rotate, and then realize the rotation of the water outlet butterfly valve plate 402, so that the water outlet valve member 400 can be opened; Furthermore, this embodiment also provides a structure of a second linkage component 700: The second linkage assembly 700 includes a worm 701, a worm wheel 702, a gear 703 and a rack 704. The worm wheel 702 is fixedly connected to the water inlet valve shaft 503. The worm 701 is rotatably connected to the water inlet valve pipe 501. The worm 701 is meshed with the worm wheel 702. The gear 703 is fixedly connected to the worm 701. A mounting frame 705 is fixedly connected to the valve body 200. The rack 704 is fixedly connected to the mounting frame 705. The gear 703 is meshed with the rack 704. When the telescopic cylinder 100 is in the original state, the gear 703 and the rack 704 are in meshing state. When the telescopic cylinder 100 pushes the valve core 300 to plug into the water outlet pipe 303, the gear 703 is disengaged from the rack 704. Thus, when the valve core 300 moves linearly, the water inlet pipe 202 also moves synchronously. Thus, under the action of the gear 703 and the rack 704, the worm 701 drives the worm wheel 702 to rotate, which also causes the inlet butterfly valve plate to rotate, thereby opening the water inlet valve member 500. Taking the first linkage assembly 600 and the second linkage assembly 700 as an example, after the water outlet pipe 303 is connected with the valve core 300, the telescopic cylinder 100 continues to push the valve core 300 to move toward the water outlet pipe 303, and the pushing arm 602 can push the rotating disk 601 to continue to rotate, so that the opening angle of the water outlet butterfly valve plate 402 can be adjusted. At this time, the gear 703 is disengaged from the rack 704, and under the self-locking effect of the worm gear 702 and the worm 701, the water inlet butterfly valve plate 502 is always in the final state, so that the water inlet flow rate of the water inlet valve member 500 remains unchanged, and the water injection flow rate is controlled by controlling the opening state of the water outlet butterfly valve plate 402.

[0020] Furthermore, in this embodiment, in order to facilitate the disassembly and maintenance of the entire valve body, flanges are used to connect the water inlet pipe 202 and the water inlet valve pipe 501, the water outlet pipe 303 and the valve body 200, and the water outlet pipe 303 and the water outlet valve pipe 401.

[0021] Furthermore, in this embodiment, a rotating groove is provided at the end of the pushing arm 602, one end of the traction arm 603 is fixedly connected with a rotating shaft, the rotating shaft is rotatably connected in the rotating groove, the other end of the traction arm 603 is fixedly connected with a rotating ring 608, the rotating ring 608 is sleeved on the eccentric shaft 607, and the end of the eccentric shaft is threadedly connected with a limiting nut 609, thereby realizing the connection between the traction arm 603 and the rotating disk 601 and the pushing arm 602, and the traction arm 603 and the eccentric shaft can be disassembled, so as to facilitate the separation of the water outlet valve member 400 and the valve body 200.

[0022] See also Figure 2 , Figure 5 , Figure 8 , Fig.12 , a pneumatic fast water injection valve for a liquefied hydrocarbon storage tank, this embodiment is based on the second embodiment, and further has that a water injection pipeline is fixedly connected between the water outlet valve member 400 and the liquefied hydrocarbon storage tank, a flow meter 800 is provided on the water injection pipeline, and a plurality of sets of position sensors 204 are fixedly connected inside the valve body 200, and a position detection head 305 is provided on the valve core 300 to match the position sensor 204, that is, when the telescopic cylinder 100 pushes the valve core 300 to move to a position, the position sensor 204 can detect the position detection head 305, so that the position sensor 204 sends a signal to determine the open and closed state of the water injection valve; A control box 905 is fixedly connected to the valve body 200, and a control board 901 with a single-chip microcomputer as the core and a wireless communication module 902 are fixedly connected in the control box 905. A display module 906 and a button module 903 are fixedly connected to the outer wall of the control box 905. The flow meter 800, the position sensor 204, the solenoid valve 101, the wireless communication module 902, the display module 906 and the button module are all connected to the control board 901 by signal, and the wireless communication module 902 is connected to the remote PC terminal 904 by wireless signal, so that the opening and closing state of the water injection valve and the flow rate during water injection can be displayed through the display module 906, and can be transmitted to the remote PC terminal 904 through the wireless communication module 902 for remote monitoring, and the opening and closing state of the water injection valve and the flow rate during water injection can be controlled on site through the button module, and the opening and closing state of the water injection valve and the flow rate during water injection can also be remotely controlled through the remote PC terminal 904, which facilitates the control and monitoring of the water injection valve and improves the use effect of the device.

[0023] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A pneumatic quick water injection valve for a liquefied hydrocarbon storage tank, comprising a telescopic cylinder (100), a valve body (200), a valve core (300), a water outlet valve member (400) and a water inlet valve member (500), characterized in that: The valve body (200) is slidably connected to the valve core (300), a water injection channel (302) is provided inside the valve core (300), a water inlet pipe (202) is fixedly connected to the valve core (300), the water inlet pipe (202) is communicated with the water injection channel (302), a movement port (203) is provided on the valve body (200), the water inlet pipe (202) is located in the movement port (203), and one end of the valve body (200) is fixedly connected to the telescopic cylinder (100). ), the piston end of the telescopic cylinder (100) is fixedly connected to the valve core (300), and the other end of the valve body (200) is fixedly connected to a water outlet pipe (303), and the water outlet pipe (303) cooperates with the water injection channel (302), so that when the telescopic cylinder (100) pushes the valve core (300) to move linearly, the water outlet pipe (303) can be inserted into the water injection channel (302), and the water outlet pipe (303) and the water injection channel (302) are sealed; The end of the water outlet pipe (303) located outside is fixedly connected to the water outlet valve component (400), and the end of the water inlet pipe (202) is fixedly connected to the water inlet valve component (500). Power transmission is achieved between the valve core (300) and the water outlet valve component (400) via a first linkage assembly (600), and power transmission is achieved between the valve core (300) and the water inlet valve component (500) via a second linkage assembly (700). When the telescopic cylinder (100) pushes the valve core (300) to be plugged into the water outlet pipe (303), the water outlet valve component (400) and the water inlet valve component (500) are both in an open state. When the telescopic cylinder (100) drives the valve core (300) to be separated from the water outlet pipe (303), the water outlet valve component (400) and the water inlet valve component (500) are both in a closed state.

2. A pneumatic rapid water injection valve for a liquefied hydrocarbon storage tank according to claim 1, characterized in that: Two groups of sliding keys (301) are fixedly connected to the valve core (300), and sliding grooves (201) are provided on the valve body (200) to match the sliding keys (301). The sliding keys (301) are slidably connected in the sliding grooves (201), and power transmission is achieved between a group of the sliding keys (301) and the water outlet valve member (400) via a first linkage assembly (600).

3. The pneumatic rapid water injection valve for a liquefied hydrocarbon storage tank according to claim 1, characterized in that: A plurality of sets of sealing rings (304) are fixedly connected to the inner wall of the water injection channel (302).

4. A pneumatic rapid water injection valve for a liquefied hydrocarbon storage tank according to claim 2, characterized in that: The water outlet valve component (400) comprises a water outlet valve pipe (401), a water outlet butterfly valve plate (402) and a water outlet valve shaft (403); the water outlet valve pipe (401) is fixedly connected to the water outlet pipe (303); the water outlet valve shaft (403) is rotatably connected to the water outlet valve pipe (401); the water outlet butterfly valve plate (402) is fixedly connected to the end of the water outlet valve shaft (403) located inside the water outlet valve pipe (401); power transmission is achieved between the water outlet valve shaft (403) and the sliding key (301) via the first linkage assembly (600).

5. A pneumatic rapid water injection valve for a liquefied hydrocarbon storage tank according to claim 4, characterized in that: The water inlet valve component (500) comprises a water inlet valve pipe (501), a water inlet butterfly valve plate (502) and a water inlet valve shaft (503); the water inlet valve pipe (501) is fixedly connected to the water inlet pipe (202); the water inlet valve shaft (503) is rotatably connected to the water inlet valve pipe (501); the water inlet butterfly valve plate (502) is fixedly connected to the end of the water inlet valve shaft (503) located inside the water inlet valve pipe (501); the water inlet valve shaft (503) and the second linkage assembly (700) realize power transmission.

6. A pneumatic rapid water injection valve for a liquefied hydrocarbon storage tank according to claim 5, characterized in that: The first linkage assembly (600) comprises a rotating disk (601), a pushing arm (602) and a pulling arm (603); a notch (604) is provided on the valve body (200) corresponding to the sliding groove (201); a moving platform (605) is slidably connected in the notch (604); the moving platform (605) is fixedly connected to the sliding key (301); the pushing arm (602) is fixedly connected to the moving platform (605); a guide platform (606) is fixedly connected to the valve body (200); the pushing arm (602) is slidably connected to the guide platform (606); an end of the pushing arm (602) is rotatably connected to the pulling arm (603); the rotating disk (601) is fixedly connected to the water outlet valve shaft (403); an eccentric shaft (607) is fixedly connected to the rotating disk (601); and one end of the pulling arm (603) is rotatably connected to the eccentric shaft (607).

7. A pneumatic rapid water injection valve for a liquefied hydrocarbon storage tank according to claim 5, characterized in that: The second linkage assembly (700) comprises a worm (701), a worm wheel (702), a gear (703) and a rack (704); the worm wheel (702) is fixedly connected to the water inlet valve shaft (503); the worm (701) is rotatably connected to the water inlet valve pipe (501); the worm (701) is meshingly connected to the worm wheel (702); the gear (703) is fixedly connected to the worm (701); and the valve body (200) is fixedly connected to the valve body (200). A mounting frame (705) is provided, the mounting frame (705) being fixedly connected to the rack (704), the gear (703) being meshedly connected to the rack (704), and when the telescopic cylinder (100) is in an original state, the gear (703) and the rack (704) are in a meshed state, and when the telescopic cylinder (100) pushes the valve core (300) to be plugged into the water outlet pipe (303), the gear (703) is disengaged from the rack (704).

8. The pneumatic rapid water injection valve for a liquefied hydrocarbon storage tank according to claim 6, characterized in that: A rotation groove is provided at the end of the pushing arm (602); one end of the traction arm (603) is fixedly connected to a rotation shaft, the rotation shaft is rotatably connected in the rotation groove; the other end of the traction arm (603) is fixedly connected to a rotation ring (608), the rotation ring (608) is sleeved on the eccentric shaft (607), and the end of the eccentric shaft is also threadedly connected to a limit nut (609).

9. A pneumatic rapid water injection valve for a liquefied hydrocarbon storage tank according to claim 8, characterized in that: The water inlet pipe (202) and the water inlet valve pipe (501), the water outlet pipe (303) and the valve body (200), and the water outlet pipe (303) and the water outlet valve pipe (401) are all connected by flanges.

10. The pneumatic rapid water injection valve for a liquefied hydrocarbon storage tank according to claim 1, characterized in that: The telescopic cylinder (100) is matched with an air supply system, wherein the air supply system comprises an electromagnetic valve (101) for controlling the operation of the telescopic cylinder (100); A water injection pipeline is fixedly connected between the water outlet valve member (400) and the liquefied hydrocarbon storage tank, and a flow meter (800) is provided on the water injection pipeline; A plurality of sets of position sensors (204) are fixedly connected inside the valve body (200), and a position detection head (305) is provided on the valve core (300) to match the position sensors (204); The valve body (200) is fixedly connected to a control box (905), a control board (901) with a single-chip microcomputer as the core and a wireless communication module (902) are fixedly connected inside the control box (905), a display module (906) and a button module (903) are fixedly connected to the outer wall of the control box (905), the flow meter (800), the position sensor (204), the solenoid valve (101), the wireless communication module (902), the display module (906) and the button module are all connected to the control board (901) by signal, and the wireless communication module (902) is connected to a remote PC terminal (904) by wireless signal.

Images