Fuel gas field station odorizing machine storage tank liquid supplementing tool

Abstract

The utility model discloses a liquid supplementing tool for a storage tank of an odorizing machine in a gas field station. The liquid supplementing tool for the storage tank of the odorizing machine in the gas field station is characterized in that a through hole is formed in the center of a cover plate, and a pressurizing valve and a flow guide pipe are arranged on the cover plate in a penetrating manner; the mounting nail comprises an adjusting part and a threaded part, and the adjusting part is slidably sleeved with the through hole; and the locking block is rotationally arranged on the threaded part. The mounting nail is arranged in the center of the cover plate, and the locking block in threaded rotation is arranged at the other end of the mounting nail, so that the locking block can be obliquely arranged in the injection opening of the large barrel in the using process, and the locking block continuously gets close to the cover plate when the mounting nail rotates through blocking of the flow guide pipe penetrating through the cover plate; during use, tetrahydrothiophene liquid can be guided out of the flow guide pipe through pressurization of the pressurization valve, liquid can be directly supplemented to the storage tank, volatilization cannot be generated in the liquid supplementing process, the operation efficiency can be improved, and the operation safety of workers can be effectively guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas odorization technical field especially relates to a kind of gas station odorization machine storage tank liquid supplement tool. BACKGROUND

[0002] Gas station odorization machine storage tank liquid supplement is the necessary operation to ensure natural gas recognition degree and gas quality, and filling tetrahydrothiophene into odorization machine storage tank is one of daily key work of gas station staff.Tetrahydrothiophene is colorless transparent volatile liquid, insoluble in water, and miscible in ethanol, diethyl ether, benzene, acetone.It has strong unpleasant smell, and the odor produced by it is stable and not easy to dissipate, and it can be smelled in the air at 0.01PPm, so it is mainly used as odorizing agent for city natural gas and other gas fuels, i.e.warning agent.Due to the strong smell of tetrahydrothiophene, it is a class 3 flammable material, and the explosion limit range is wide (1.1%-12.1%), so it needs to be operated carefully under the premise of environmental safety when supplementing liquid to odorization machine storage tank.

[0003] In the prior art, gas station supplements liquid to odorization machine storage tank mainly by extracting tetrahydrothiophene from large tank provided by supplier and manually pouring it into odorization machine storage tank.Due to volatilization of tetrahydrothiophene during extraction and transportation, strong smell produced during operation can easily cause discomfort of operator, and the existing operation mode also has the disadvantages of low operation efficiency and low safety factor.

[0004] Therefore, the prior art still needs to be improved and developed. INVENTION CONTENTS

[0005] In order to solve the problem that, in the prior art, when gas station supplements liquid to odorization machine storage tank, the operation mode is to extract tetrahydrothiophene from large tank and manually pour it, strong smell produced due to volatilization during the process can easily cause discomfort of operator, and the operation has the problems of low efficiency and low safety factor, the utility model provides a kind of gas station odorization machine storage tank liquid supplement tool.

[0006] The utility model is realized by the following technical schemes:

[0007] A kind of gas station odorization machine storage tank liquid supplement tool, wherein the gas station odorization machine storage tank liquid supplement tool includes:

[0008] Cover plate, the center of the cover plate is provided with through hole, the cover plate is provided with pressurizing valve and flow guide pipe through;

[0009] Mounting nail, the mounting nail includes adjusting part and screw part, the adjusting part is slidably sleeved in the through hole;

[0010] Lock block, the lock block is rotationally arranged on the screw part, and the lock block is used to seal and lock the cover plate on the injection port of large tank.

[0011] The gas station odorizer tank replenishment tool has a countersunk hole on the side of the cover plate away from the locking block. The diameter of the countersunk hole is larger than the diameter of the through hole, and the countersunk hole and the through hole are concentrically arranged.

[0012] One end of the mounting pin is provided with a screw head, and the cross-sectional shape of the screw head is adapted to the cross-sectional shape of the countersunk hole.

[0013] The gas station odorizer tank replenishment tool includes an anti-detachment baffle at the other end of the mounting pin, which is fixedly connected to the mounting pin and is used to limit the movement range of the locking block.

[0014] The gas station odorizer tank replenishment tool includes a pressure gauge installed on the cover plate, and the pressure gauge, the pressurizing valve, and the guide pipe are arranged circumferentially around the center point of the cover plate at predetermined intervals.

[0015] The aforementioned gas station odorizer storage tank replenishment tool further includes:

[0016] The sealing gasket is an annular ring with a diameter that matches the cover plate. The positions of the pressure gauge, the pressure valve, and the guide tube correspond to the hollowed-out parts of the sealing gasket.

[0017] The gas station odorizer storage tank replenishment tool, wherein a positioning ring is provided on one side of the sealing gasket corresponding to the cover plate, the positioning ring protruding and integrally formed with the sealing gasket;

[0018] The cover plate has a slot on one side corresponding to the sealing gasket, and the slot is detachably adapted to the positioning ring.

[0019] The gas station odorizer storage tank replenishment tool, wherein the cover plate is a metal cover plate, the mounting nail is a metal mounting nail, and the locking block is a metal locking block;

[0020] The sealing gasket is a PTFE gasket.

[0021] The gas station odorizer storage tank replenishment tool, wherein the threads on the threaded part are continuously arranged, and the length of the adjusting part is less than or equal to the thickness of the injection port of the large tank.

[0022] The gas station odorizer tank replenishment tool, wherein the locking block has a rectangular cross-sectional shape, and the length of the locking block is adapted to the diameter of the cover plate.

[0023] The beneficial effects of this utility model are as follows: By setting an installation nail in the center of the cover plate and a threaded locking block at the other end of the installation nail, the locking block can be tilted left and right and placed into the inlet of the large tank during use. The blocking effect of the guide pipe that runs through the cover plate causes the locking block to move closer to the cover plate as the installation nail rotates, eventually abutting against the inner wall of the inlet of the large tank to form a locking installation of the cover plate. During use, pressurization by the pressure valve can cause the guide pipe to discharge tetrahydrothiophene liquid, thereby directly replenishing the storage tank. During the replenishment process, there is no evaporation and the operation efficiency is improved. This utility model is easy to install, inexpensive, and can effectively ensure the operation safety of the staff. Attached Figure Description

[0024] Figure 1 This is an exploded view of the structure of the gas station odorizer storage tank replenishment tool of this utility model;

[0025] Figure 2 This is a schematic diagram of the combined state of the gas station odorizer storage tank replenishment tool of this utility model;

[0026] Figure 3 This is an installation diagram of the liquid replenishment tool for the storage tank of the odorizer in a gas station.

[0027] exist Figures 1 to 3 In the middle: 100, cover plate; 110, through hole; 120, countersunk hole; 130, pressure valve; 140, guide tube; 150, pressure gauge; 200, mounting pin; 210, adjusting part; 220, threaded part; 230, screw head; 240, anti-detachment baffle; 300, sealing gasket; 310, positioning ring; 400, locking block; 500, large barrel; 510, injection port. Detailed Implementation

[0028] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0031] In existing technologies, gas stations replenish odorizer storage tanks mainly by extracting tetrahydrothiophene from a large container provided by the supplier and then manually injecting it into the odorizer storage tank. Because tetrahydrothiophene volatilizes during the extraction and transportation process, the strong odor generated during the operation can easily cause discomfort to the operators. At the same time, the existing operation method also has disadvantages such as low operation efficiency and low safety factor.

[0032] Based on the aforementioned problems in the existing technology, such as Figure 1 As shown, this utility model provides a liquid replenishment tool for the storage tank of a gas station odorizer. The liquid replenishment tool includes: a cover plate 100, with a through hole 110 in the center of the cover plate 100, and a pressure valve 130 and a guide pipe 140 through the cover plate 100; a mounting pin 200, which includes an adjusting part 210 and a threaded part 220, with the adjusting part 210 slidably sleeved in the through hole 110; and a locking block 400, which is rotatably disposed on the threaded part 220 and is used to seal and lock the cover plate 100 on the injection port 510 of the large tank 500.

[0033] This invention features an installation pin 200 at the center of a cover plate 100 and a threaded locking block 400 at the other end of the installation pin 200. In use, the locking block 400 can be tilted left or right and inserted into the inlet 510 of a large container 500. The obstruction of the guide pipe 140 passing through the cover plate 100 causes the locking block 400 to continuously approach the cover plate 100 as the installation pin 200 rotates, eventually abutting against the inner wall of the inlet 510 of the large container 500 to lock the cover plate 100 in place. During use, pressurization via the pressure valve 130 allows the guide pipe 140 to discharge tetrahydrothiophene liquid, directly replenishing the storage tank. This replenishment process avoids evaporation and improves operational efficiency. This invention is easy to install, inexpensive, and effectively ensures the safety of operators.

[0034] In the following embodiments, for ease of understanding by those skilled in the art, the large container 500 provided by the supplier for holding tetrahydrothiophene will be referred to as the large container 500 in the following text. The large container 500 in the prior art is a sealed structure, with only an injection port 510 for filling tetrahydrothiophene. Therefore, when the station staff obtains tetrahydrothiophene, they need to open the injection port 510 and use the injection port 510 as a drain port to pour out the tetrahydrothiophene. In the above embodiments of this utility model, the liquid replenishment tool for the gas station odorizer storage tank is actually installed on the injection port 510, thereby achieving the sealing of the large container 500 while the tetrahydrothiophene can be guided to the odorizer storage tank through the pressure valve 130 and the guide pipe 140 provided on the cover plate 100.

[0035] Specifically, such as Figure 1 As shown, the above-mentioned gas station odorizer tank replenishment tool specifically consists of a cover plate 100, mounting pins 200, and locking blocks 400. The cover plate 100 is used to fasten onto the injection port 510 of the large tank 500. During actual installation, the mounting pin 200 is slidably fitted into the through hole 110 at the center of the cover plate 100, allowing one end of the mounting pin 200 to extend into the large tank 500 to a predetermined distance. The mounting pin 200 is provided with an adjusting part 210 and a threaded part 220. The adjusting part 210 is located at one end of the cover plate 100 and is smoothly arranged, allowing the mounting pin 200 to slide along the through hole 110 for easy control during installation. The threaded part 220 has continuous threads, and the locking block 400 is rotatably mounted on the threaded part 220. In the initial stage of installation, the cover plate 100, mounting pins 200, and locking blocks 400 are first connected to form a... Figure 2 As shown, in this state, the locking block 400 is located at the end opposite to the cover plate 100, thus creating a certain space between the locking block 400 and the cover plate 100. Since the diameter of the injection port 510 is smaller than the diameters of the cover plate 100 and the locking block 400, during installation, one end of the locking block 400 can be inserted obliquely into the injection port 510 through the space between the locking block 400 and the cover plate 100. Then, it can be shifted to the side of insertion so that the other end of the locking block 400 can be inserted into the injection port 510. Finally, the cover plate 100 is adjusted to a position concentric with the injection port 510 to cover the injection port 510.

[0036] During further installation, such as Figure 3As shown, since the guide tube 140 on the cover plate 100 has a long length and extends into the interior of the large barrel 500, the guide tube 140 also limits the rotation range of the locking block 400. Through this limiting action, when the operator rotates the mounting pin 200 on the outside of the large barrel 500, the locking block 400 can be moved in a specific direction, so that the locking block 400 moves relative to the cover plate 100. Finally, the upper side of the locking block 400 abuts against the inlet 510 on the inner wall of the large barrel 500, and the lower side of the cover plate 100 abuts against the inlet 510 on the outside of the large barrel 500, forming a stable clamping, thereby achieving a sealing and locking of the cover plate 100.

[0037] In practical use, a pressure valve 130 and a guide pipe 140 are installed through the cover plate 100. The pressure valve 130 can be connected to an external air compressor to provide high-pressure air and inject the high-pressure gas into the large tank 500. Therefore, the air pressure difference between the inside and outside of the large tank 500 allows tetrahydrothiophene to be discharged along the guide pipe 140, thus enabling the replenishment of tetrahydrothiophene into the odorizer storage tank through the guide pipe 140. In this embodiment, tetrahydrothiophene only comes into contact with external air during the installation of the gas station odorizer storage tank replenishment tool. During use, tetrahydrothiophene volatilization will not occur at all. Therefore, the time that operators are exposed to tetrahydrothiophene volatilization gas can be significantly reduced, allowing operators to use protective equipment to protect their health for a short time. It also effectively improves the efficiency of subsequent operations and ensures operational safety.

[0038] Based on the above embodiments, in another possible embodiment of this utility model, such as Figure 1 As shown, to prevent tetrahydrothiophene leakage at the connection between the cover plate 100 and the mounting pin 200, in this embodiment, a countersunk hole 120 is provided on the side of the cover plate 100 away from the locking block 400. The diameter of the countersunk hole 120 is larger than the diameter of the through hole 110, and the countersunk hole 120 and the through hole 110 are concentrically arranged. Meanwhile, a screw head 230 is provided at one end of the mounting pin 200. The cross-sectional shape of the screw head 230 matches the cross-sectional shape of the countersunk hole 120. Therefore, after actual installation, as... Figure 2 As shown, the screw head 230 is inserted into the countersunk hole 120 and can form a blockage on the through hole 110, thereby preventing tetrahydrothiophene from leaking from the through hole 110.

[0039] In actual operation of this embodiment, a rubber gasket can also be added to the head of the mounting nail 200 to achieve a further sealing effect.

[0040] Based on the above embodiments, in another possible embodiment of this utility model, such as Figure 1As shown, to ensure the stability of the liquid replenishment tool installation of the gas station odorizer storage tank and to prevent the locking block 400 from accidentally separating from the mounting pin 200 and falling into the large tank 500 when inserted into the injection port 510, an anti-detachment baffle 240 is also provided at the other end of the mounting pin 200 in this embodiment. The anti-detachment baffle 240 is fixedly connected to the mounting pin 200, thereby limiting the movement range of the locking block 400. In actual manufacturing, the locking block 400 and the mounting pin 200 should be pre-assembled, and then the anti-detachment baffle 240 and the mounting pin 200 should be fixedly connected by welding, riveting, or other methods to effectively prevent the locking block 400 from falling off.

[0041] In another possible embodiment of this utility model, such as Figure 1 As shown, in addition to the pressure valve 130 and the guide pipe 140, the cover plate 100 is also equipped with a pressure gauge 150. The pressure gauge 150 is fixedly connected to the cover plate 100. When the cover plate 100 is installed inside the large tank 500, it can measure the air pressure inside the large tank 500. The pressure gauge 150 can then visually reflect the pressure intensity, which can effectively ensure operational safety. The pressure gauge 150 can also be used to calculate the flow rate of tetrahydrothiophene to control the amount of liquid replenished.

[0042] In actual setup, the pressure gauge 150, the pressure valve 130, and the guide pipe 140 should be arranged around the center point of the cover plate 100 at predetermined intervals. The advantage of this arrangement is that it can ensure the structural strength of the cover plate 100 and prevent the cover plate 100 from being damaged due to air pressure after long-term use. On the other hand, it also makes it easier for operators to distinguish different components and avoids interference between the operating angles of different components.

[0043] Based on the above embodiments, to further ensure that the cover plate 100 and the injection port 510 of the large container 500 remain tightly sealed after installation, and to prevent tetrahydrothiophene leakage from the gap between the cover plate 100 and the injection port 510, such as Figure 1 As shown, in this embodiment, the above-mentioned gas station odorizer tank replenishment tool also includes a sealing gasket 300. The sealing gasket 300 is an annular ring with a diameter adapted to the cover plate 100, that is, a hollow area is provided in the center of the sealing gasket 300. The positions of the pressure gauge 150, the pressure valve 130, and the guide pipe 140 should correspond to the hollow part of the sealing gasket 300 to ensure the normal use of each functional component. In actual installation, please refer to... Figure 3 The cover plate 100 clamps the sealing gasket 300 at the position of the corresponding injection port 510. Through the deformation and sealing function of the sealing gasket 300, the structural gap between the cover plate 100 and the injection port 510 can be filled, thereby ensuring the installation is airtight.

[0044] In specific installations, the sealing gasket 300 is preferably made of PTFE (polytetrafluoroethylene). PTFE has a pH value of 0-14 (except for molten alkali metals and fluorine under high temperature and pressure). It maintains good mechanical strength between -100℃ and 100℃. PTFE gaskets, also known internationally as PTFE gaskets or Teflon gaskets, are flat gaskets, V-shaped gaskets, piston rings, ball valve gaskets, etc., made from PTFE rods, tubes, or plates through machining or cutting. They possess excellent properties such as corrosion resistance, aging resistance, and non-conductivity.

[0045] Meanwhile, the cover plate 100, mounting nail 200 and locking block 400 are preferably made of metal materials, such as stainless steel, to avoid damage caused by rust and corrosion due to long-term use, which could lead to a decrease in structural strength.

[0046] In another possible embodiment of this utility model, such as Figure 1 As shown, since the sealing gasket 300 is squeezed by the cover plate 100 during installation, in order to prevent the sealing gasket 300 from deviating from its installation position during installation, a positioning ring 310 is provided on the side of the sealing gasket 300 corresponding to the cover plate 100 in this embodiment. The positioning ring 310 protrudes and is integrally formed with the sealing gasket 300. Correspondingly, a groove is also provided on the side of the cover plate 100 corresponding to the sealing gasket 300. The shape of the groove is adapted to the shape of the positioning ring 310. When the sealing gasket 300 and the cover plate 100 are in contact, the positioning ring 310 is fitted into the groove, thereby locking the relative position of the sealing gasket 300 and the cover plate 100. This can effectively prevent the sealing gasket 300 from shifting when the cover plate 100 is installed.

[0047] In the above embodiment, the cross-sectional shape of the locking block 400 should be rectangular, and the length of the locking block 400 should be adapted to the diameter of the cover plate 100. The width of the locking block 400 should be much smaller than the diameter of the cover plate 100. This setting is intended to facilitate the locking block 400 entering the injection port 510 while maintaining the locking of the injection port 510, and to avoid affecting the normal operation of the pressure valve 130, the guide pipe 140 and the pressure gauge 150.

[0048] In the above embodiment, the threads of the threaded portion 220 should be continuously provided to ensure that the locking block 400 can move a corresponding distance along the threads. At the same time, the length of the adjusting portion 210 should be less than or equal to the thickness of the injection port 510 of the large barrel 500, so as to ensure that the locking block 400 still forms a mating relationship with the mounting pin 200 through the threads when it moves to the position abutting the injection port 510, so as to ensure the locking effect.

[0049] Based on the above embodiments, in another possible embodiment of this utility model, the locking block 400 also has another installation method, that is, installation is achieved without the limiting effect of the guide tube 140. In this embodiment, the upper surface of the locking block 400 should be roughened, such as... Figure 2 In the combined state shown, after the locking block 400 is moved into the large barrel 500 by tilting and lateral movement as described above, the nail head of the mounting nail 200 can be pulled up from the outside of the large barrel 500, so that the upper surface of the locking block 400 abuts against the injection port 510 side of the inner wall of the large barrel 500. Due to the existence of friction, rotating the mounting nail 200 in this state can make the distance between the locking block 400 and the nail head continuously approach without changing the position of the locking block 400, and finally form a lock. This installation method is suitable for cases where the material of the guide tube 140 is relatively soft.

[0050] Based on the above embodiments, the actual usage process of the gas station odorizer storage tank replenishment tool of this utility model is as follows:

[0051] First, the operator puts on protective gear, opens the 510 cap of the 500-ton injection port, and then proceeds to assemble the... Figure 2 The gas station odorizer tank replenishment tool shown is installed at the injection port 510. The process is as follows: insert one side of the locking block 400 into the injection port 510, then move the entire gas station odorizer tank replenishment tool to the side, then insert the other side of the locking block 400 into the injection port 510, and adjust the center of the cover plate 100 back to the position corresponding to the center of the injection port 510.

[0052] The operator uses a tool to rotate the mounting pin 200. During this process, the locking block 400 is limited by the guide tube 140 during synchronous rotation. Therefore, the locking block 400 is fixed in a horizontal position during the subsequent rotation of the mounting pin 200 and moves in a vertical direction until it forms a clamping action with the cover plate 100 at the injection port 510. During this process, the sealing gasket 300 is simultaneously clamped between the injection port 510 and the cover plate 100, thereby sealing the corresponding part of the cover plate 100 and the injection port 510, and locking the cover plate 100 by the locking block 400.

[0053] In actual use, the end of the aforementioned guide pipe 140 located inside the large barrel 500 extends to the bottom of the large barrel 500, and the end of the guide pipe 140 located outside the large barrel 500 is connected to the storage tank of the odorizer. The pressure valve 130 is connected to the air compressor or other pressure-pressurizing structure. When the pressure valve 130 is opened, the air pressure inside the large barrel 500 is higher than that outside the large barrel 500. Therefore, the tetrahydrothiophene inside the large barrel 500 can be introduced into the storage tank along the guide pipe 140. During the process, the operator controls the flow rate according to the pressure gauge 150 and the control structure of the pressure valve 130, which can achieve the effect of safe and efficient operation.

[0054] In summary, this utility model provides a liquid replenishment tool for the storage tank of a gas station odorizer. The tool includes: a cover plate with a through hole in the center, and a pressure valve and a guide pipe through the cover plate; a mounting pin with an adjusting part and a threaded part, the adjusting part being slidably fitted into the through hole; and a locking block rotatably mounted on the threaded part, used to seal and lock the cover plate to the injection port of the large tank. This invention features a mounting pin at the center of a cover plate and a threaded locking block at the other end of the pin. In use, the locking block can be tilted left or right and inserted into the inlet of a large tank. The obstruction of the guide tube running through the cover plate causes the locking block to continuously approach the cover plate as the mounting pin rotates, eventually abutting against the inner wall of the inlet to lock the cover plate in place. During use, pressure is applied via a pressure valve to allow tetrahydrothiophene liquid to be discharged through the guide tube, thus directly replenishing the storage tank. This replenishment process avoids evaporation and improves operational efficiency. This invention is easy to install, inexpensive, and effectively ensures the safety of operators.

[0055] It should be understood that the application of this utility model is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A tool for replenishing liquid in the storage tank of a gas station odor generator, characterized in that, The liquid replenishment tool for the gas station odorizer storage tank includes: A cover plate, wherein a through hole is provided in the center of the cover plate, and a pressure valve and a guide pipe are provided through the cover plate; The mounting pin includes an adjusting part and a threaded part, wherein the adjusting part is slidably sleeved in the through hole; A locking block, rotatably mounted on the threaded portion, is used to seal and lock the cover plate onto the injection port of the large barrel.

2. The liquid replenishment tool for the storage tank of the odorizer in a gas station according to claim 1, characterized in that, A countersunk hole is provided on the side of the cover plate opposite to the locking block. The diameter of the countersunk hole is larger than the diameter of the through hole, and the countersunk hole and the through hole are concentrically arranged. One end of the mounting pin is provided with a screw head, and the cross-sectional shape of the screw head is adapted to the cross-sectional shape of the countersunk hole.

3. The liquid replenishment tool for the storage tank of the odorizer in a gas station according to claim 2, characterized in that, The other end of the mounting pin is provided with an anti-detachment baffle, which is fixedly connected to the mounting pin and is used to limit the movement range of the locking block.

4. The liquid replenishment tool for the storage tank of the odorizer in a gas station according to claim 1, characterized in that, A pressure gauge is provided on the cover plate, and the pressure gauge, the pressure valve, and the guide pipe are arranged around the center point of the cover plate at predetermined intervals.

5. The liquid replenishment tool for the storage tank of the odorizer in a gas station according to claim 4, characterized in that, The gas station odorizer storage tank replenishment tool also includes: The sealing gasket is an annular ring with a diameter that matches the cover plate. The positions of the pressure gauge, the pressure valve, and the guide tube correspond to the hollowed-out parts of the sealing gasket.

6. The liquid replenishment tool for the storage tank of the odorizer in a gas station according to claim 5, characterized in that, A positioning ring is provided on one side of the sealing gasket corresponding to the cover plate. The positioning ring protrudes and is integrally formed with the sealing gasket. The cover plate has a slot on one side corresponding to the sealing gasket, and the slot is detachably adapted to the positioning ring.

7. The liquid replenishment tool for the storage tank of the odorizer in a gas station according to claim 5, characterized in that, The cover plate is a metal cover plate, the mounting pin is a metal mounting pin, and the locking block is a metal locking block; The sealing gasket is a PTFE gasket.

8. The liquid replenishment tool for the storage tank of the odorizer in a gas station according to claim 1, characterized in that, The threads on the threaded part are continuously arranged, and the length of the adjusting part is less than or equal to the thickness of the injection port of the large barrel.

9. The liquid replenishment tool for the storage tank of the odorizer in a gas station according to claim 1, characterized in that, The lock block has a rectangular cross-sectional shape, and its length is matched to the diameter of the cover plate.

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