Safety protection device for unloading hose
By designing a safety protection device for unloading hose including a housing assembly, a placing frame assembly, a plug assembly and a push mechanism, the problem of impurities entering during the LNG unloading process is solved, and the protection of the submersible pump and the operation efficiency of the filling station are improved.
Patent Information
- Application Number
- CN202421677348.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-16
AI Technical Summary
In the prior art, it is difficult to effectively prevent impurities such as sand and dust from entering the unloading hose during the LNG unloading process, resulting in wear of the bearings of the submersible pump, increasing maintenance costs and affecting the normal operation of the filling station.
A safety protection device for unloading hose is designed, including a housing assembly, a placing frame assembly, a plug assembly and a pushing mechanism. The LNG hose is fixed through the placing frame assembly, and the flange head is slidly sealed by the placing frame assembly to prevent impurities from entering.
It effectively prevents impurities such as sand and dust from entering the unloading hose, reduces the wear risk of submersible pumps, reduces maintenance costs, and improves the equipment reliability and operational efficiency of the filling station.
Smart Images
Figure CN222798689U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of LNG unloading, in particular to a safety protection device for an unloading hose. Background Art
[0002] At present, the vast majority of heavy trucks in my country use natural gas as a power fuel, and the construction of natural gas filling stations continues to expand. The LNG at the filling station needs to be transported to the LNG filling station by LNG tank trucks, and then unloaded into the storage tanks of the LNG filling station. When unloading LNG, the LNG unloading hose is needed. After unloading, since the LNG hose will have some residual natural gas and frost, the station staff will directly throw it on the ground or hang it on the cofferdam, etc., which makes the LNG unloading hose vulnerable to damage. At the same time, because of the dust of the heavy truck itself and the dust and other solid particles on the ground driven by the vehicle, dust and other impurities can easily enter the randomly thrown LNG unloading hose, which will cause the dust and other impurities in the LNG hose to flow into the pump pool along the unloading pipeline when the liquid is unloaded next time. When the solid particles in the LNG liquid exceed the standard, the bearings of the submersible pump are greatly worn, which will cause the low-temperature submersible pump to be damaged due to impurities. The maintenance time of the submersible pump is long and the maintenance cost is high, which seriously affects the normal operation of the LNG station. At the same time, the LNG unloading hose that is thrown away randomly will also cause the connection plate of the LNG unloading hose to be easily corroded, which increases the probability of damage to the LNG unloading hose and reduces the service life of the LNG unloading hose. In summary, it greatly increases the problem of site equipment failure and subsequent maintenance costs, and also has a direct impact on refueling.
[0003] Traditional technical solutions have the following defects: 1. The traditional method is to install a filter valve at the unloading port to reduce impurities in the liquid. Although this method can solve the problem of impurities, the installation of a filter valve will affect the unloading speed, and in severe cases, blockage will occur. 2. The flange of the unloading hose is sealed with a blind flange. Although this method can effectively prevent impurities such as sand and dust from entering the hose, it is extremely inconvenient for the staff to operate due to the cumbersome operation, heavy flange, and severe frost on the hose after unloading. As a result, the staff may operate at will, or the sealing is not tight, which also cannot prevent impurities such as sand and dust from entering. 3. A quick plug is used for sealing. Although this method can reduce the number of operating steps for the staff, the pressure inside the hose increases after the residual liquid in the LNG hose is vaporized, and the plug is flushed away, which may accidentally injure the staff in severe cases. Utility Model Content
[0004] The purpose of the utility model is to provide a safety protection device for unloading hoses in view of the above-mentioned deficiencies, which solves the problem of installing a filter valve at the unloading port in the prior art to reduce impurities in the liquid; although this method can solve the impurity problem, the installation of a filter valve will affect the unloading speed, and in severe cases, clogging will occur; at the same time, it solves the problem that the prior art uses a blind flange to seal the flange of the unloading hose. Although this method can effectively prevent impurities such as sand and dust from entering the hose, it is extremely inconvenient for the staff to operate due to the cumbersome operation, heavy flange, and severe frost on the hose after unloading. As a result, the staff may operate at will, or the sealing is not tight, which also cannot avoid the problem of impurities such as sand and dust entering.
[0005] The utility model is realized by the following scheme:
[0006] A safety protection device for an unloading hose includes at least but is not limited to a shell assembly, a placement rack assembly, a plug assembly and a pushing mechanism; the placement rack assembly is arranged in the shell assembly for placing an LNG hose, the plug assembly is slidably arranged in the shell assembly, and the pushing mechanism can push the plug assembly close to or away from the placement rack assembly.
[0007] Based on the structure of the above-mentioned unloading hose safety protection device, the shell assembly includes a base frame and a accommodating cavity; the accommodating cavity is arranged on the base frame, and a bolt mounting plate is arranged at the bottom of the base frame.
[0008] Based on the structure of the above-mentioned unloading hose safety protection device, the upper end of the accommodating chamber is open, the open end of the accommodating chamber is hinged with a cover plate, a handle is provided on the cover plate, and a hydraulic push rod is provided between the cover plate and the accommodating chamber.
[0009] Based on the structure of the above-mentioned unloading hose safety protection device, a plurality of arc-shaped long holes are arranged on the front side wall of the accommodating chamber, a first mounting plate and a gas probe are arranged on one side wall of the accommodating chamber, the detection end of the gas probe passes through the side wall of the accommodating chamber and extends into the accommodating chamber, and the gas probe is fixedly mounted on the first mounting plate; an alarm light is also arranged on the gas probe.
[0010] Based on the structure of the above-mentioned unloading hose safety protection device, the placement rack assembly includes multiple placement units, the number of the placement units is the same as the arc long hole, and the placement unit includes an angle steel frame, a connecting plate and a pipe clamp groove; the connecting plate is arranged between two parallel angle steel frames, and a pipe clamp groove is arranged at the same side ends of adjacent angle steel frames; the height position of the arc groove of the pipe clamp groove is the same as the height position of the arc groove of the arc long hole.
[0011] Based on the structure of the above-mentioned unloading hose safety protection device, the plug assembly includes a support guide rail, a support frame and a guide bearing; the support guide rails are arranged in parallel on the two side walls of the accommodating cavity, the guide bearings are arranged at both ends of the support frame, the guide bearings are inserted into the support guide rails, and the support frame can move along the length direction of the support guide rails under the action of the guide bearings; a flange plug is arranged on the end surface of the support frame close to the placement frame assembly, a sealing gasket is arranged on the flange plug, an air guide pipe is arranged in the flange plug, a pressure relief pipe cooperating with the air guide pipe is arranged in the support frame, and a pressure relief valve is arranged on the pressure relief pipe.
[0012] Based on the structure of the above-mentioned unloading hose safety protection device, a proximity switch and a second mounting bracket are arranged at a predetermined position on the support guide rail; a plurality of flange plugs are installed on the support bracket, and each flange plug is connected to the pressure relief pipe; a green indicator light and a red indicator light cooperating with the proximity switch are arranged on the side wall of the accommodating chamber.
[0013] Based on the structure of the above-mentioned unloading hose safety protection device, the pushing mechanism includes a third mounting plate, a straight-moving cylinder and a two-position five-way valve; the third mounting plate is arranged on the rear side plate of the accommodating chamber, the straight-moving cylinder is arranged on the third mounting plate through the fourth mounting plate, the height position of the straight-moving cylinder matches the position of the support frame, the two-position five-way valve is arranged on the third mounting plate through the fifth mounting plate, and the front and rear ends of the straight-moving cylinder are also respectively provided with throttle valves, the two throttle valves are connected to the two-position five-way valve through pipelines, the two-position five-way valve is connected to the straight-through quick connector through a stainless steel pipe, and the straight-through quick connector is connected and arranged on the side wall of the accommodating chamber.
[0014] Based on the structure of the above-mentioned unloading hose safety protection device, a water leakage hole is arranged at the bottom of the accommodating cavity, and the water leakage hole is a long strip structure.
[0015] Based on the structure of the above-mentioned unloading hose safety protection device, the cover plate is also provided with reinforcing ribs. In summary, due to the adoption of the above-mentioned technical solution, the beneficial effects of the utility model are:
[0016] 1. This solution has a simple design structure, low processing cost, and easy operation. It can effectively solve the problems of impurities such as sand and dust entering the pump pool, damage to the hose by random discarding, and pressure leakage in the pipe, reduce the problem of site equipment failure, and improve personnel safety protection. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1-2 It is a schematic diagram of the overall three-dimensional structure of the utility model;
[0018] Figure 3 It is a structural schematic diagram of the housing assembly in the utility model;
[0019] Figure 4 It is a structural schematic diagram of the placement unit in the utility model;
[0020] Figure 5 It is a structural schematic diagram of the plug group in the utility model;
[0021] Figure 6 It is a structural schematic diagram of the driving mechanism in the utility model;
[0022] Description of the drawings: 1. Shell assembly; 2. Placement rack assembly; 3. Plug assembly; 4. Push mechanism; 5. LNG hose; 101. Base frame; 102. Accommodation cavity; 103. Bolt mounting plate; 104. Cover plate; 105. Handle; 106. Hydraulic push rod; 107. Arc long hole; 108. First mounting plate; 109. Gas probe; 110. Leakage hole; 111. Reinforcement rib; 201. Angle steel frame; 202. Connection plate; 203. Pipe clamp groove; 301. Support rail; 30 2. Support frame; 303. Guide bearing; 304. Flange plug; 305. Sealing gasket; 306. Air guide pipe; 307. Pressure relief pipe; 308. Pressure relief valve; 309. Proximity switch; 310. Second mounting frame; 311. Indicator green light; 312. Indicator red light; 401. Third mounting plate; 402. Straight-acting cylinder; 403. Two-position five-way valve; 404. Fourth mounting plate; 405. Fifth mounting plate; 406. Throttle valve; 407. Stainless steel pipe; 408. Straight-through quick connector. DETAILED DESCRIPTION
[0023] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.
[0024] Any feature disclosed in this specification (including any additional claims and abstract), unless otherwise stated, may be replaced by other equivalent or alternative features having similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.
[0025] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.
[0026] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.
[0027] Example 1
[0028] like Figure 1 to Figure 6 As shown, the utility model provides a technical solution:
[0029] A safety protection device for an unloading hose, which at least includes but is not limited to a shell assembly 1, a placement rack assembly 2, a plug assembly 3 and a pushing mechanism 4; the placement rack assembly 2 is arranged in the shell assembly 1 for placing an LNG hose 5, the plug assembly 3 is slidably arranged in the shell assembly 1, and the pushing mechanism 4 can push the plug assembly 3 close to or away from the placement rack assembly 2.
[0030] Based on the above structure, when the LNG hose 5 needs to be placed, the flange head of the LNG hose 5 is inserted into the placement rack assembly 2, and the assembly is manually driven to move the plug assembly 3 close to the flange head of the LNG hose 5 and seal it to prevent dust, water vapor and other impurities from entering the hose.
[0031] As an example, the shell assembly 1 may include a base frame 101 and a accommodating chamber 102; the accommodating chamber 102 is arranged on the base frame 101, and a bolt mounting plate 103 is arranged at the bottom of the base frame 101. The base frame 101 can be fixed to the ground through the bolt mounting plate 103 to ensure the stability of the entire structure.
[0032] The upper end of the accommodating chamber 102 is open, and a cover plate 104 is hingedly connected to the open end of the accommodating chamber 102. A handle 105 is provided on the cover plate 104. A hydraulic push rod 106 is provided between the cover plate 104 and the accommodating chamber 102. The cover plate 104 can be quickly opened or closed by the hydraulic push rod 106.
[0033] The accommodating chamber 102 is a right-angled trapezoidal structure as a whole, and a plurality of arc-shaped long holes 107 are arranged on the front side wall of the accommodating chamber 102. A first mounting plate 108 and a gas probe 109 are arranged on one side wall of the accommodating chamber 102. The detection end of the gas probe 109 passes through the side wall of the accommodating chamber 102 and extends into the accommodating chamber 102. The gas probe 109 is fixedly mounted on the first mounting plate 108. An alarm light may also be provided on the gas probe 109, and gas detection is performed on the space inside the accommodating chamber 102 after it is closed through the gas probe 109.
[0034] A water leakage hole 110 is provided at the bottom of the accommodating cavity 102 . The water leakage hole 110 may be a long strip structure to prevent liquid from being deposited in the accommodating cavity 102 and to maintain the dryness of the interior of the accommodating cavity 102 .
[0035] The cover plate 104 may also be provided with reinforcing ribs 111 to enhance the support performance of the cover plate 104 .
[0036] As an example, the placement frame assembly 2 may include multiple placement units, the number of which is the same as the arc strip hole 107, and the placement units may include an angle steel frame 201, a connecting plate 202 and a pipe clamp groove 203; the connecting plate 202 is arranged between two parallel angle steel frames 201 to form an I-shaped structure, and the pipe clamp groove 203 is arranged at the same side ends of adjacent angle steel frames 201; the height position of the arc groove of the pipe clamp groove 203 is the same as the height position of the arc groove of the arc strip hole 107.
[0037] Based on the above structure, the LNG hose 5 can be stably fixed by the placement unit, and the flange end of the LNG hose 5 will be limited by the pipe clamp groove 203 to ensure that the positions of each LNG hose 5 are the same during plugging, which facilitates the plugging operation of the plug assembly 3.
[0038] As an example, the plug assembly 3 may include a support rail 301, a support frame 302 and a guide bearing 303; the support rail 301 is arranged in parallel on the two side walls of the accommodating cavity 102, the guide bearings 303 are arranged at both ends of the support frame 302, the guide bearings 303 are inserted into the support rail 301, and the support frame 302 can move along the length direction of the support rail 301 under the action of the guide bearing 303; a flange plug 304 may be arranged on the end surface of the support frame 302 close to the placement frame assembly 2, a sealing gasket 305 is arranged on the flange plug 304, an air guide pipe 306 is arranged in the flange plug 304, a pressure relief pipe 307 cooperating with the air guide pipe 306 is arranged in the support frame 302, and a pressure relief valve 308 is arranged on the pressure relief pipe 307; a proximity switch 309 and a second mounting frame 310 may be arranged at a predetermined position on the support rail 301;
[0039] A plurality of flange plugs 304 may be installed on the support frame 302 , and each flange plug 304 is connected to the pressure relief pipe 307 ; a green indicator light 311 and a red indicator light 312 cooperating with the proximity switch 309 are arranged on the side wall of the accommodating chamber 102 .
[0040] Based on the above structure, the support frame 302 can move under the push of external force, so as to seal the LNG hose 5, connect the LNG hose 5 with the pressure relief pipe 307, and discharge the internal pressure of the LNG hose 5 through the pressure relief valve 308 to ensure the safety of the operators; the sealing gasket 305 can ensure the sealing performance of the LNG hose 5 and the flange plug 304; the proximity switch 309 can detect whether the LNG hose 5 is placed correctly, and indicate it through the green light 311 and the red light 312.
[0041] As an example, the pushing mechanism 4 may include a third mounting plate 401, a straight-moving cylinder 402 and a two-position five-way valve 403; the third mounting plate 401 is arranged on the rear side plate of the accommodating chamber 102, the straight-moving cylinder 402 is arranged on the third mounting plate 401 through the fourth mounting plate 404, the height position of the straight-moving cylinder 402 matches the position of the support frame 302, the two-position five-way valve 403 is arranged on the third mounting plate 401 through the fifth mounting plate 405, and the front and rear ends of the straight-moving cylinder 402 are also respectively provided with throttle valves 406, the two throttle valves 406 are connected to the two-position five-way valve 403 through pipelines, the two-position five-way valve 403 is connected to the straight-through quick connector 408 through a stainless steel pipe 407, and the straight-through quick connector 408 is connected and arranged on the side wall of the accommodating chamber 102.
[0042] Based on the above structure, the straight-through quick connector 408 is connected to the external air source to supply air to the two-position five-way valve 403, and the air source of the straight-moving cylinder 402 is regulated by the two-position five-way valve 403, thereby controlling the movement of the cylinder piston rod.
[0043] How to use this solution:
[0044] When the station is not unloading liquid, the three LNG unloading hoses at the station unloading port are correctly placed in the pipe clamp groove 203 in the LNG unloading hose placement rack assembly 2. The proximity switch 309 sensor installed on the guide rail identifies whether the flange position of the LNG unloading hose is correctly placed. The identification result is fed back through the indicator light installed on the right thin plate. The red light indicates that the LNG unloading hose is not correctly placed, and the operator needs to re-place the LNG unloading hose correctly. The green light indicates that the unloading hose is correctly placed. When the unloading hose is correctly placed, the operator turns the two-position five-way hand valve to ventilate the straight cylinder 402. The straight cylinder 402 pushes the mounting rack, and the bearing of the mounting rack slides on the guide rail, so that the flange plug 304 installed on the mounting rack moves to the LNG unloading hose flange with the assistance of the bearing and the guide rail, and is inserted into the flange hole of the LNG unloading hose through the flange plug 304. The sealing gasket 305 installed at the front end of the flange plug 304 seals it to prevent dust, water vapor and other impurities from entering the hose.
[0045] When the station unloads liquid, the upper cover plate 104 is opened, and the operator slowly opens the manual stop valve on the pressure relief pipe 307 to release the pressure in the three unloading hoses. After the pressure is released, the manual stop valve is closed. The operator turns the two-position five-way hand valve to exhaust the straight cylinder 402. The straight cylinder 402 pulls the mounting frame, and the bearing of the mounting frame slides on the guide rail, so that the flange plug 304 installed on the mounting frame is assisted by the bearing and the guide rail. The flange plug 304 is removed from the flange hole of the LNG unloading hose. The operator takes out the three LNG unloading hoses from the pipe clamp groove 203 in the LNG unloading hose placement rack assembly 2, starts to install the unloading pipeline and the tank truck unloading port flange, and starts to unload liquid safely.
[0046] When the site unloading is completed, the LNG unloading hose is removed from the LNG tanker, and the LNG unloading hose is placed in the pipe clamp groove 203 in the LNG unloading hose placement rack assembly 2. The proximity switch 309 sensor installed on the guide rail identifies whether the flange position of the LNG unloading hose is placed correctly. The identification result is fed back through the indicator light installed on the right thin plate. The red light indicates that the LNG unloading hose is not placed correctly, and the operator needs to re-place the LNG unloading hose correctly. The green light indicates that the unloading hose is placed correctly. When the unloading hose is placed correctly, the operator turns the two-position five-way hand valve to ventilate the straight cylinder 402. The straight cylinder 402 pushes the mounting rack, and the bearing of the mounting rack slides on the guide rail, so that the flange plug 304 installed on the mounting rack moves to the flange of the LNG unloading hose with the assistance of the bearing and the guide rail, and is inserted into the flange hole of the LNG unloading hose through the flange plug 304. The sealing gasket 305 installed at the front end of the flange plug 304 seals it to prevent sand and other impurities from entering the hose. After a period of time, slowly open the manual stop valve on the pressure relief pipe 307 to release the pressure in the three unloading hoses. After the pressure is released, close the manual stop valve and close the door cover.
[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A safety protection device for a truck unloading hose, characterized in that: It includes a shell assembly, a placement rack assembly, a plug assembly and a pushing mechanism; the placement rack assembly is arranged in the shell assembly for placing the LNG hose, the plug assembly is slidably arranged in the shell assembly, and the pushing mechanism can push the plug assembly close to or away from the placement rack assembly.
2. A vehicle unloading hose safety protection device as claimed in claim 1, characterized in that: The housing assembly comprises a base frame and a containing cavity; the containing cavity is arranged on the base frame, and a bolt mounting plate is arranged at the bottom of the base frame.
3. A vehicle unloading hose safety protection device as claimed in claim 2, characterized in that: The upper end of the accommodating cavity is open, a cover plate is hinged at the open end of the accommodating cavity, a handle is arranged on the cover plate, and a hydraulic push rod is arranged between the cover plate and the accommodating cavity.
4. A safety protection device for a truck unloading hose as claimed in claim 3, characterized in that: A plurality of arc-shaped long holes are arranged on the front side wall of the accommodating chamber, a first mounting plate and a gas probe are arranged on one side wall of the accommodating chamber, the detection end of the gas probe passes through the side wall of the accommodating chamber and extends into the accommodating chamber, and the gas probe is fixedly mounted on the first mounting plate; an alarm light is also arranged on the gas probe.
5. A safety protection device for a truck unloading hose as claimed in claim 4, characterized in that: The placement rack assembly includes multiple placement units, the number of the placement units is the same as the arc long strip holes, and the placement units include an angle steel frame, a connecting plate and a pipe clamp groove; the connecting plate is arranged between two parallel angle steel frames, and the pipe clamp groove is arranged at the same side ends of adjacent angle steel frames; the arc groove height position of the pipe clamp groove is the same as the arc groove height position of the arc long strip hole.
6. A vehicle unloading hose safety protection device as claimed in claim 5, characterized in that: The plug assembly includes a support guide rail, a support frame and a guide bearing; the support guide rails are arranged in parallel on the two side walls of the accommodating cavity, the guide bearings are arranged at both ends of the support frame, the guide bearings are inserted into the support guide rails, and the support frame can move along the length direction of the support guide rails under the action of the guide bearings; a flange plug is arranged on the end surface of the support frame close to the placement frame assembly, a sealing gasket is arranged on the flange plug, an air guide pipe is arranged in the flange plug, a pressure relief pipe cooperating with the air guide pipe is arranged in the support frame, and a pressure relief valve is arranged on the pressure relief pipe.
7. A vehicle unloading hose safety protection device as claimed in claim 6, characterized in that: A proximity switch and a second mounting bracket are arranged at predetermined positions on the support rail; a plurality of flange plugs are installed on the support bracket, and each flange plug is connected to the pressure relief pipe; a green indicator light and a red indicator light cooperating with the proximity switch are arranged on the side wall of the accommodating cavity.
8. A vehicle unloading hose safety protection device as claimed in claim 7, characterized in that: The pushing mechanism includes a third mounting plate, a straight-moving cylinder and a two-position five-way valve; the third mounting plate is arranged on the rear side plate of the accommodating chamber, the straight-moving cylinder is arranged on the third mounting plate through the fourth mounting plate, the height position of the straight-moving cylinder matches the position of the support frame, the two-position five-way valve is arranged on the third mounting plate through the fifth mounting plate, and the front and rear ends of the straight-moving cylinder are also respectively provided with throttle valves, the two throttle valves are connected to the two-position five-way valve through pipelines, the two-position five-way valve is connected to the straight-through quick connector through a stainless steel pipe, and the straight-through quick connector is connected and arranged on the side wall of the accommodating chamber.
9. A safety protection device for a truck unloading hose according to any one of claims 2 to 8, characterized in that: A water leakage hole is arranged at the bottom of the accommodating cavity, and the water leakage hole is a long strip structure.
10. A safety protection device for a truck unloading hose according to any one of claims 3 to 8, characterized in that: The cover plate is also provided with reinforcing ribs.