Methanol-resistant explosion-proof filling device

Abstract

The utility model relates to the technical field of methanol filling, and discloses a methanol-resistant explosion-proof filling device which comprises a liquid filling joint and a liquid storage joint, when methanol is injected and liquid residues exist in a pipe, the electric telescopic rod is controlled to enable the residue discharging piston to move up and down in the barrel body, then the residual methanol can be controlled to enter the first ball valve from the liquid injection connector end, then enter the second ball valve handle and be discharged into the liquid storage tank from the liquid storage connector, and liquid cannot flow back under the limitation of the first sealing seat; when methanol is injected, gas enters a third ball seat under the action of gas pressure, a second sealing seat is opened, the gas further passes through a pressure relief outer pipe and enters a tank body containing methanol to be transferred, pressure balance in the two tank bodies is achieved, and the pressure in the two tank bodies is reduced. And methanol filling is not influenced by unbalanced pressure, so that the efficiency and safety of methanol filling are greatly improved.

Description

A methanol-resistant explosion-proof filling device Technical Field

[0001] This utility model relates to the field of methanol refueling technology, specifically to a methanol explosion-proof refueling device. Background Technology

[0002] The methanol explosion-proof filling device is a specially designed device for the safe and efficient filling of methanol. It has explosion-proof and methanol-resistant characteristics, and its main function is to improve the safety of the filling process and prevent explosion and fire accidents.

[0003] Chinese patent CN221319315U discloses a methanol-resistant explosion-proof filling device, including a storage tank. A pump body is installed on the top of the storage tank, and an L-shaped delivery pipe is installed at the output end of the pump body. A socket is provided at the top end of the delivery pipe, and a threaded portion is provided on one side of the socket. An annular boss is fixedly connected to one side of the threaded portion. There are two annular bosses, and a spring is provided between the two annular bosses. The spring is welded to the surface of the annular boss near the threaded portion. A sealing ball is interference-fitted to the end of the spring away from the threaded portion. The outer diameter of the sealing ball is larger than the inner diameter of the annular boss. It can use the elastic force of the spring to seal the inner opening of the annular boss, thereby preventing the methanol solution inside the delivery pipe from flowing and thus preventing leakage, effectively eliminating safety hazards.

[0004] The aforementioned device has the effect of preventing methanol solution from seeping out. However, existing devices usually leave liquid residue in the pipeline after methanol filling, which poses a risk of pipeline fire and explosion. At the same time, the filling efficiency is low due to the pressure imbalance between the two tanks during the methanol filling process. Therefore, there is a need to provide a methanol explosion-proof filling device. Summary of the Invention

[0005] The purpose of this invention is to provide a methanol explosion-proof filling device to solve the problems of low filling efficiency caused by the pressure imbalance between the two tanks during and after filling of methanol solution, and the risk of pipeline fire and explosion due to liquid residue left in the pipeline.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a methanol-resistant explosion-proof filling device, comprising an injection connector and a storage connector, wherein a valve body is rotatably mounted on both the injection connector and the storage connector, and a discharge mechanism is provided between the injection connector and the storage connector; the discharge mechanism comprises a first ball seat and a second ball seat, wherein a sealing seat is rotatably mounted inside both the first ball seat and the second ball seat, and a spring is fixedly mounted between the first sealing seat and the first ball seat and the second ball seat; a cylinder is fixedly mounted on the first ball seat, and an electric telescopic rod is fixedly mounted on one end of the cylinder; a discharge piston is fixedly mounted on the output end of the electric telescopic rod and slidably mounted inside the cylinder.

[0007] Preferably, both of the first sealing seats are rotatably installed on the same side of the first ball seat and the second ball seat, and the first spring is installed at an inclined position on one side of the first sealing seat.

[0008] Preferably, the cylinder is connected to the first ball seat in a through manner, and a retaining ring is installed on the lower side of the cylinder.

[0009] Preferably, the liquid storage connector is provided with a pressure relief mechanism, which includes a pressure relief inner tube that passes through the liquid storage connector. One end of the pressure relief inner tube is fixedly installed with an anti-clogging funnel, and a second valve body is rotatably installed inside the pressure relief inner tube. The other end of the pressure relief inner tube is fixedly installed with a third ball seat, and a second sealing seat is rotatably installed inside the third ball seat. A second spring is fixedly installed between the second sealing seat and the third ball seat. One end of the third ball seat is fixedly installed with a pressure relief outer tube, and one end of the pressure relief outer tube is fixedly installed with a pressure relief connector.

[0010] Preferably, the anti-clogging funnel is installed upside down at one end of the pressure relief inner tube, and the position of the anti-clogging funnel is lower than that of the liquid storage connector.

[0011] Preferably, the second sealing seat is located inside the third ball seat and on the other side opposite to the first sealing seat, and the pressure relief outer pipe is composed of a telescopic pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1) This methanol explosion-proof filling device, when methanol filling is completed and there is liquid residue in the pipe, controls the electric telescopic rod to move the discharge piston up and down in the cylinder. Under the pressure change, the two No. 1 sealing plugs respectively seal and open the first ball seat and the second ball seat under the action of the discharge piston. In this way, the methanol residue can be controlled to enter the first ball valve from the filling connector end and then enter the second ball valve handle and be discharged into the storage tank through the storage connector. The liquid cannot flow back under the restriction of the No. 1 sealing seat, thus achieving efficient cleaning of methanol residue and avoiding fire and explosion caused by methanol residue in the pipe.

[0014] 2) This methanol explosion-proof filling device connects a pressure relief connector to the upper side of the tank containing methanol to be transferred. When methanol is being filled, it enters the storage tank through the storage connector. Under the action of the anti-blocking funnel, the methanol cannot enter the inner pressure relief pipe, while the gas in the storage tank can enter the inner pressure relief pipe. Under the action of the gas pressure, the second sealing seat is opened, allowing the gas to further pass through the outer pressure relief pipe and enter the tank containing the methanol to be transferred. The second sealing seat, together with the second spring, can prevent gas backflow and achieve pressure balance in the two tanks, so that methanol filling is not affected by pressure imbalance, greatly improving the efficiency and safety of methanol filling. Attached Figure Description

[0015] Figure 1 is a three-dimensional structural schematic diagram of a methanol explosion-proof filling device according to an embodiment of the present invention;

[0016] Figure 2 is a cross-sectional view of the filling device in an embodiment of this utility model;

[0017] Figure 3 is a cross-sectional view of the exhaust structure in an embodiment of this utility model;

[0018] Figure 4 is a cross-sectional view of the pressure relief mechanism in an embodiment of this utility model;

[0019] Figure 5 is an enlarged view of A in Figure 4 in an embodiment of this utility model.

[0020] In the diagram: 1. Injection connector; 2. Storage connector; 3. Valve body 1; 4. Drainage mechanism; 401. First ball seat; 402. Second ball seat; 403. First sealing seat; 404. First spring; 405. Cylinder; 406. Electric telescopic rod; 407. Drainage piston; 5. Pressure relief mechanism; 501. Pressure relief inner pipe; 502. Anti-clogging funnel; 503. Valve body 2; 504. Third ball seat; 505. Second sealing seat; 506. Second spring; 507. Pressure relief outer pipe; 508. Pressure relief connector. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] Referring to Figures 1-5, a methanol-resistant explosion-proof filling device includes an injection connector 1 and a storage connector 2. A valve body 3 is rotatably mounted on both the injection connector 1 and the storage connector 2. A discharge mechanism 4 is provided between the injection connector 1 and the storage connector 2. The discharge mechanism 4 includes a first ball seat 401 and a second ball seat 402. A sealing seat 403 is rotatably mounted inside both the first ball seat 401 and the second ball seat 402. A spring 404 is fixedly installed between the sealing seat 403 and the first ball seat 401 and the second ball seat 402. A cylinder 405 is fixedly mounted on the first ball seat 401. An electric telescopic rod 406 is fixedly mounted on one end of the cylinder 405. A discharge piston 407 is fixedly mounted on the output end of the electric telescopic rod 406 and slidably mounted inside the cylinder 405.

[0024] Referring to Figure 3, it is further seen that both No. 1 sealing seats 403 are rotatably installed on the same side of the first ball seat 401 and the second ball seat 402. The No. 1 spring 404 is installed obliquely on one side of the No. 1 sealing seat 403. The cylinder 405 is connected to the first ball seat 401 in a through manner, and a retaining ring is installed on the lower side of the cylinder 405.

[0025] Specifically, when methanol is added and there is liquid residue in the pipe, the discharge piston 407 moves up and down inside the cylinder 405 when the electric telescopic rod 406 is controlled. During the movement of the discharge piston 407, the pressure inside the first ball seat 401 changes, and both No. 1 sealing seats 403 are rotatably installed on the same side inside the first ball seat 401 and the second ball seat 402. When the discharge piston 407 moves upward, the No. 1 sealing seat 403 in the first ball seat 401 opens and the No. 1 sealing seat 403 in the second ball seat 402 closes. At this time, the liquid in the pipe in front of the injection connector 1 will be drawn into the first ball seat 401. When the discharge piston 407 moves downward, the sealing state of the two No. 1 sealing seats 403 will change. At this time, the liquid residue in the first ball seat 401 will enter the second ball seat 402 and flow into the storage tank through the storage connector 2, thus achieving the effect of discharging the liquid residue in the pipe.

[0026] Example 2

[0027] Referring to Figures 1, 4, and 5, a pressure relief mechanism 5 is provided on the liquid storage connector 2. The pressure relief mechanism 5 includes a pressure relief inner tube 501, which runs through the liquid storage connector 2. One end of the pressure relief inner tube 501 is fixedly installed with an anti-clogging funnel 502. A second valve body 503 is rotatably installed inside the pressure relief inner tube 501. A third ball seat 504 is fixedly installed at the other end of the pressure relief inner tube 501. A second sealing seat 505 is rotatably installed inside the third ball seat 504. A second spring 506 is fixedly installed between the second sealing seat 505 and the third ball seat 504. A pressure relief outer tube 507 is fixedly installed at one end of the third ball seat 504. A pressure relief connector 508 is fixedly installed at one end of the pressure relief outer tube 507.

[0028] Referring to Figures 4 and 5, and based on Embodiment 1, it is further found that the anti-blocking funnel 502 is installed inverted at one end of the pressure relief inner tube 501, and the position of the anti-blocking funnel 502 is lower than that of the liquid storage connector 2. The second sealing seat 505 is located inside the third ball seat 504 and on the other side relative to the first sealing seat 403. The pressure relief outer tube 507 is composed of a telescopic tube.

[0029] Specifically, when methanol is added, the injection connector 1 and the pressure relief connector 508 are connected to the tank containing the methanol to be transferred, and the pressure relief connector 508 is connected to the upper side of the tank. The methanol is then pumped into the storage tank. Thanks to the pressure relief inner pipe 501 installed inside the storage connector 2 and the anti-clogging funnel 502 installed inverted on the lower side, the gas in the storage tank enters the pressure relief inner pipe 501 without the methanol solution entering it. The gas then enters the tank containing the methanol to be transferred through the pressure relief outer pipe 507, achieving pressure balance between the two tanks. The second sealing seat 505, in conjunction with the second spring 506, prevents gas and liquid from entering the pressure relief inner pipe 501 through the pressure relief outer pipe 507. The first valve body 3 and the second valve body 503 can seal the device after the methanol is added and discharged.

[0030] In actual operation, when methanol is added and there is liquid residue in the pipe, the discharge piston 407 moves up and down in the cylinder 405 when the electric telescopic rod 406 is controlled. During the movement of the discharge piston 407, the pressure inside the first ball seat 401 changes, and both No. 1 sealing seats 403 are rotatably installed on the same side of the first ball seat 401 and the second ball seat 402. When the discharge piston 407 moves upward, the No. 1 sealing seat 403 in the first ball seat 401 opens and the No. 1 sealing seat 403 in the second ball seat 402 closes. At this time, the liquid in the pipe in front of the injection connector 1 will be sucked into the first ball seat 401. When the discharge piston 407 moves downward, the sealing state of the two No. 1 sealing seats 403 will change. At this time, the liquid residue in the first ball seat 401 will enter the second ball seat 402 and flow into the storage tank through the storage connector 2, thus achieving the effect of discharging the liquid residue in the pipe.

[0031] When methanol is added, the injection connector 1 and the pressure relief connector 508 are connected to the tank containing the methanol to be transferred, and the pressure relief connector 508 is connected to the upper side of the tank. The methanol is then pumped into the storage tank. Thanks to the pressure relief inner pipe 501 installed inside the storage connector 2 and the anti-clogging funnel 502 installed inverted on the lower side, the gas in the storage tank enters the pressure relief inner pipe 501 without the methanol solution entering it. The gas then enters the tank containing the methanol to be transferred through the pressure relief outer pipe 507, achieving pressure balance between the two tanks. The second sealing seat 505, together with the second spring 506, prevents gas and liquid from entering the pressure relief inner pipe 501 through the pressure relief outer pipe 507. The first valve body 3 and the second valve body 503 can seal the device after the methanol is added and discharged.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A methanol explosion-proof filling device, comprising a filling connector (1) and a storage connector (2), wherein a valve body (3) is rotatably mounted on both the filling connector (1) and the storage connector (2), characterized in that: A discharge mechanism (4) is provided between the injection connector (1) and the storage connector (2); the discharge mechanism (4) includes a first ball seat (401) and a second ball seat (402), and a No. 1 sealing seat (403) is rotatably installed inside the first ball seat (401) and the second ball seat (402). A No. 1 spring (404) is fixedly installed between the No. 1 sealing seat (403) and the first ball seat (401) and the second ball seat (402). A cylinder (405) is fixedly installed on the first ball seat (401), and an electric telescopic rod (406) is fixedly installed at one end of the cylinder (405). A discharge piston (407) is fixedly installed on the output end of the electric telescopic rod (406) and slidably installed inside the cylinder (405).

2. The methanol explosion-proof refueling device according to claim 1, characterized in that: Both of the first sealing seats (403) are rotatably installed on the same side of the first ball seat (401) and the second ball seat (402), and the first spring (404) is installed at an angle on one side of the first sealing seat (403).

3. The methanol explosion-proof refueling device according to claim 2, characterized in that: The cylinder (405) is connected to the first ball seat (401) in a through manner, and a retaining ring is installed on the lower side of the cylinder (405).

4. The methanol explosion-proof refueling device according to claim 1, characterized in that: The liquid storage connector (2) is provided with a pressure relief mechanism (5). The pressure relief mechanism (5) includes a pressure relief inner tube (501), which passes through the liquid storage connector (2). One end of the pressure relief inner tube (501) is fixedly installed with an anti-clogging funnel (502). A second valve body (503) is rotatably installed inside the pressure relief inner tube (501). A third ball seat (504) is fixedly installed at the other end of the pressure relief inner tube (501). A second sealing seat (505) is rotatably installed inside the third ball seat (504). A second spring (506) is fixedly installed between the second sealing seat (505) and the third ball seat (504). A pressure relief outer tube (507) is fixedly installed at one end of the third ball seat (504). A pressure relief connector (508) is fixedly installed at one end of the pressure relief outer tube (507).

5. The methanol explosion-proof refueling device according to claim 4, characterized in that: The anti-clogging funnel (502) is installed upside down at one end of the pressure relief inner tube (501), and the position of the anti-clogging funnel (502) is lower than that of the liquid storage connector (2).

6. The methanol explosion-proof refueling device according to claim 4, characterized in that: The second sealing seat (505) is located inside the third ball seat (504) and on the other side opposite to the first sealing seat (403). The pressure relief outer pipe (507) is composed of a telescopic pipe.

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