LNG (Liquefied Natural Gas) liquid adding gun with liquid spraying prevention protection device

Abstract

The utility model relates to an LNG (Liquefied Natural Gas) liquid adding gun, in particular to an LNG liquid adding gun with a liquid spraying prevention protection device. Comprising a liquid adding gun body and a protective cover, the protective cover comprises a circular-ring-shaped connecting plate and a circular-ring-shaped protective plate; the connecting plate fixedly sleeves one end, close to the head, of the peripheral surface of the liquid adding gun body; included angles are formed between the inner peripheral surface and the outer peripheral surface of the protective plate and the axial direction of the liquid adding gun body, the small-diameter end of the protective plate is connected with one side, close to the head of the liquid adding gun body, of the connecting plate, and the large-diameter end faces the head of the liquid adding gun body; the head of the liquid adding gun body extends out of the large-diameter end of the protection plate. According to the utility model, the protective cover is fixedly arranged at the head part of the liquid adding gun, so that sputtered LNG (Liquefied Natural Gas) can be effectively blocked; according to the liquid adding gun, gas generated by LNG and gas generated by the LNG can cover most of liquid sputtered by the liquid adding gun in specification and size, when the LNG is sputtered instantly generated by gun inserting and gun pulling, the LNG can be effectively prevented from being sputtered to an operator, and the operation safety of the operator is guaranteed to a great extent.

Description

Technical Field

[0001] The utility model relates to an LNG liquid filling gun, in particular to an LNG liquid filling gun with an anti-liquid spray protection device. Background Art

[0002] LNG (liquefied natural gas) is a liquid formed by condensation of natural gas, and its temperature is generally -162℃; when LNG comes into contact with the skin, it can cause low-temperature burns similar to burns. The gas produced by LNG also has an extremely low temperature, and if it comes into contact with human skin, it can also cause low-temperature burns.

[0003] When filling LNG, the operator usually wears safety work clothes (clothing, antifreeze gloves, goggles) and holds a filling gun to fill LNG.

[0004] Because the LNG filling gun may spray out LNG liquid or gas to varying degrees due to sealing and failure of residual liquid to return in time when plugging and unplugging. In high temperature periods such as summer, the work clothes are thinner, and protective masks and work clothes alone cannot effectively block the damage to the body caused by LNG spraying liquid or gas, which can easily cause great harm to the human body in severe cases. Utility Model Content

[0005] The purpose of the utility model is to solve the technical problem that the existing LNG filling gun may spray out LNG liquid or gas to varying degrees at the moment of plugging and unplugging due to reasons such as sealing and failure of residual liquid to return in time, and in high temperature periods such as summer, the work clothes are relatively thin, and the damage to the body caused by the sprayed LNG liquid or gas cannot be effectively blocked by the protective mask and work clothes alone, which is easy to cause great harm to the human body in severe cases. The utility model provides an LNG filling gun with an anti-spray protection device.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] An LNG filling gun with a liquid spray prevention protection device comprises a filling gun body, and its special features are:

[0008] Also includes protective covers;

[0009] The protective cover comprises a circular connecting plate and a circular protective plate;

[0010] The connecting plate is fixedly sleeved on the outer peripheral surface of the liquid adding gun body close to one end of the head thereof;

[0011] The inner and outer circumferential surfaces of the protective plate are both arranged at an angle with the axial direction of the liquid adding gun body, the small diameter end is connected to the side of the connecting plate close to the head of the liquid adding gun body, and the large diameter end is arranged toward the head of the liquid adding gun body;

[0012] The head of the liquid adding gun body extends out of the large diameter end of the protective plate.

[0013] Furthermore, the connecting plate is provided with a plurality of first connecting grooves arranged circumferentially and extending axially, and one end of the protective plate connected to the connecting plate is provided with a plurality of second connecting grooves arranged circumferentially and extending axially, and the first connecting grooves and the second connecting grooves radially extend through the connecting plate and the protective plate;

[0014] The plurality of first connecting grooves and the plurality of second connecting grooves are arranged one by one in correspondence, and the correspondingly arranged first connecting grooves and the second connecting grooves are communicated with each other to form an accommodating groove for accommodating the plurality of liquid adding gun claws on the outer peripheral surface of the liquid adding gun body;

[0015] The plurality of liquid adding gun claws on the outer peripheral surface of the liquid adding gun body are respectively accommodated in a plurality of accommodation grooves;

[0016] The connecting plate is connected to the liquid adding gun body through a plurality of connecting pieces.

[0017] Furthermore, the number of the liquid filling gun claws arranged on the outer peripheral surface of the liquid filling gun body and the receiving grooves arranged on the protective cover are both three, and the three receiving grooves are evenly arranged along the circumferential direction.

[0018] Furthermore, the axial dimension of the receiving groove is 24 mm, and the circumferential dimension is 24 mm;

[0019] The connecting piece is a connecting bolt.

[0020] Further; the outer diameter of the large diameter end of the protective plate is 120mm, the inner diameter of the small diameter end is 87.60mm, the axial dimension of the protective cover is 40mm, and the thickness of the protective plate is 6mm;

[0021] The axial dimension of the connecting plate is 15 mm and the outer diameter is 99.60 mm.

[0022] Furthermore, the outer peripheral surface of the connection between the small diameter end of the protective plate and the connecting plate is an arc-shaped transition.

[0023] The beneficial effects of the utility model are:

[0024] The utility model can effectively block the splashing LNG and the gas generated by the LNG by fixing the protective cover on the head of the liquid filling gun. The specifications and dimensions can cover most of the liquid splashed by the liquid filling gun. When the LNG splashes at the moment of inserting and removing the gun, it can effectively block the splashing toward the operator, thereby ensuring the operating safety of the operator to a great extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the protective cover from a first viewing angle in an embodiment of the utility model;

[0027] Figure 3 It is a schematic diagram of the second viewing angle structure of the protective cover in the embodiment of the utility model.

[0028] In the figure: 1-liquid filling gun body, 2-protective cover, 21-connecting plate, 22-protective plate, 23-accommodating groove, 24-connecting piece, 3-liquid filling gun claw. DETAILED DESCRIPTION

[0029] In order to make the purpose, advantages and features of the utility model clearer, the LNG filling gun with a liquid spray protection device proposed by the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following specific implementation methods, the advantages and features of the utility model will be clearer.

[0030] See also Figure 1 ; This embodiment provides an LNG filling gun with an anti-liquid spray protection device, including a filling gun body 1 and a protective cover 2.

[0031] See also Figure 1 , Figure 3 For the convenience of description, the protective cover 2 is divided into two parts according to its structure, namely a connecting plate 21 and a protective plate 22.

[0032] The connecting plate 21 is a circular plate, and its main function is to connect with the liquid filling gun body 1 and provide an installation position for the protective plate 22. The connecting plate 21 is mounted on the outer peripheral surface of the liquid filling gun body 1 near one end of the head thereof, and at least one connecting hole is provided on the peripheral side of the connecting plate 21 along the circumferential direction. The connecting member 24 is passed through the connecting hole on the connecting plate 21 to connect and fix the connecting plate 21 to the liquid filling gun body 1.

[0033] Specifically, there are three connecting holes in this embodiment, and the connecting member 24 is specifically an M6 connecting bolt.

[0034] The size of the connecting plate 21 is designed according to the specifications of the liquid filling gun body 1 , specifically: the axial size of the connecting plate 21 is 15 mm, and the outer diameter is 99.60 mm.

[0035] The main function of the protective plate 22 is to block the LNG splashed from the head of the filling gun body 1 to prevent harm to the staff. The protective plate 22 is a trumpet-shaped structure, and its inner and outer peripheral surfaces are both arranged at an angle with the axial direction of the filling gun body 1. Its small diameter end is integrally connected to the connecting plate 21 near the head of the filling gun body 1, and the outer peripheral surface of the connection between the two is in an arc-shaped transition, and the specific size requirement of the arc-shaped transition is R10. The large diameter end is arranged toward the head of the filling gun body 1, and the head of the filling gun body 1 extends out of the large diameter end of the protective plate 22. Through the above arrangement, the protective plate 22 can be used to effectively block the splashed LNG.

[0036] Specifically, the outer diameter of the large diameter end of the protective plate 22 is 120 mm, the inner diameter of the small diameter end is 87.60 mm, the thickness is 6 mm, and the axial dimension of the protective cover 2 is 40 mm.

[0037] The liquid filling gun body 1 is of the prior art, and three liquid filling gun clamping claws 3 are arranged on its outer peripheral surface. As for other specific structures, they are not described in detail in this embodiment.

[0038] In order to facilitate the installation of the connecting plate 21 to the liquid filling gun body 1, three first connecting grooves arranged along the circumferential direction and extending along the axial direction are provided on the connecting plate 21, and three second connecting grooves arranged along the circumferential direction and extending along the axial direction are provided at one end of the protective plate 22 connected to the connecting plate 21. The first connecting groove and the second connecting groove correspond to each other and penetrate the connecting plate 21 and the protective plate 22 in the radial direction. The three first connecting grooves and the three second connecting grooves are arranged in a one-to-one correspondence, and the correspondingly arranged first connecting grooves and the second connecting grooves are connected to each other to form a receiving groove 23 for accommodating the three liquid filling gun claws 3 on the outer circumferential surface of the liquid filling gun body 1. The axial dimension of the receiving groove 23 is 24 mm, and the circumferential dimension is 24 mm. The three liquid filling gun claws 3 on the outer circumferential surface of the liquid filling gun body 1 are respectively accommodated in the three receiving grooves 23.

Claims

1. An LNG filling gun with a liquid spray protection device, comprising a filling gun body (1), characterized in that: It also includes a protective cover (2), which includes a circular connecting plate (21) and a circular protective plate (22); The connecting plate (21) is fixedly mounted on the outer peripheral surface of the liquid adding gun body (1) near one end of the head thereof; The inner and outer circumferential surfaces of the protective plate (22) are both provided with an angle with the axial direction of the liquid adding gun body (1), the small diameter end of the protective plate (22) is connected to the side of the connecting plate (21) close to the head of the liquid adding gun body (1), and the large diameter end is arranged toward the head of the liquid adding gun body (1); The head of the liquid adding gun body (1) extends out of the large diameter end of the protective plate (22).

2. The LNG filling gun with a liquid spray protection device according to claim 1, characterized in that: The connecting plate (21) is provided with a plurality of first connecting grooves arranged in the circumferential direction and extending in the axial direction; one end of the protective plate (22) connected to the connecting plate (21) is provided with a plurality of second connecting grooves arranged in the circumferential direction and extending in the axial direction; the first connecting grooves and the second connecting grooves correspondingly penetrate the connecting plate (21) and the protective plate (22) in the radial direction; The plurality of first connecting grooves and the plurality of second connecting grooves are arranged in one-to-one correspondence, and the correspondingly arranged first connecting grooves and the second connecting grooves are communicated with each other to form an accommodating groove (23) for accommodating a plurality of liquid adding gun claws (3) on the outer peripheral surface of the liquid adding gun body (1); The plurality of liquid adding gun claws (3) on the outer peripheral surface of the liquid adding gun body (1) are respectively accommodated in the plurality of accommodation grooves (23); The connecting plate (21) is connected to the liquid adding gun body (1) via a plurality of connecting pieces (24).

3. The LNG filling gun with a liquid spray protection device according to claim 2, characterized in that: The number of the liquid filling gun claws (3) arranged on the outer peripheral surface of the liquid filling gun body (1) and the number of the receiving grooves (23) arranged on the protective cover (2) are both three, and the three receiving grooves (23) are evenly arranged along the circumferential direction.

4. The LNG filling gun with a liquid spray protection device according to claim 2 or 3, characterized in that: The accommodating groove (23) has an axial dimension of 24 mm and a circumferential dimension of 24 mm; The connecting piece (24) is a connecting bolt.

5. The LNG filling gun with a liquid spray protection device according to claim 1 or 2, characterized in that: The protective plate (22) has an outer diameter of 120 mm at the large diameter end, an inner diameter of 87.60 mm at the small diameter end, and a thickness of 6 mm; The connecting plate (21) has an axial dimension of 15 mm and an outer diameter of 99.60 mm.

6. The LNG filling gun with a liquid spray protection device according to claim 5, characterized in that: The outer peripheral surface of the connection between the small diameter end of the protection plate (22) and the connection plate (21) is an arc-shaped transition.

7. The LNG filling gun with a liquid spray protection device according to claim 1, characterized in that: The axial dimension of the protective cover (2) is 40 mm.

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