CN115306970B

CN115306970B - Anticreep connects and contains its LNG pump sled

Info

Publication number: CN115306970B
Application number: CN202211195273.7A
Authority: CN
Inventors: 王常青; 王瑛; 王钟浩; 张军; 杨志雄; 张翔
Original assignee: Sichuan Kaideyuan Technology Co ltd
Current assignee: Sichuan Kaideyuan Technology Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2022-12-20
Anticipated expiration: 2042-09-29
Also published as: CN115306970A

Abstract

The invention discloses an anti-drop connector and an LNG pump pry comprising the same, wherein the anti-drop connector comprises a first connector and a second connector which are mutually butted, the first connector and the second connector are connected through an inserting part, and the inserting part comprises a first inserting section and a second inserting section which are mutually clamped and respectively connected with the first connector and the second connector; according to the invention, after the first joint and the second joint are well inserted through the first inserting joint and the second inserting joint, the elastic pin can be inserted into the cavity through the through hole, and the clamping plate is jacked up, so that the clamping plate can rotate through the hinge seat after being propped by the elastic pin, the clamping plate is driven to buckle the baffle after rotating, and then the first joint and the second joint are clamped, so that a user can clamp and fix the first joint and the second joint when connecting the first joint and the second joint.

Description

Anticreep connects and contains its LNG pump sled

Technical Field

The invention relates to the technical field of joints, in particular to an anti-falling joint and an LNG pump pry with the same.

Background

The joint, generally referred to as a connecting part, is mostly used for connecting pipelines and has certain insulation and good sealing performance so as to enable the two pipelines to be connected into a whole;

at LNG air entrainment technical field, often need use the pipeline that is used for carrying the LNG fuel, consequently just need use the anticreep to connect LNG pump sled pipeline and other filling pipelines and be connected, but present anticreep connects, the erection joint is inconvenient, and joint strength is relatively poor, the tensile power of pulling out is not enough, in the use, very easily receive external force to elongate and take place unexpected the drop because of the pipeline, thereby influence and connect the result of use and cause serious consequence, present joint is when connecting well simultaneously, if meet the condition that unexpected drops, be difficult to in time block up, cause liquid to appear leaking, very easily cause the LNG pump to prize out present incident.

Based on this, it is highly desirable to develop an anti-separation joint and an LNG pump skid including the same.

Disclosure of Invention

In view of the above problems, the present invention aims to provide an anti-drop joint and an LNG pump skid including the same.

The invention is realized by the following technical scheme:

an anti-drop joint comprises a first joint and a second joint which are mutually butted, wherein the first joint and the second joint are connected through an inserting part, and the inserting part comprises a first inserting section and a second inserting section which are mutually clamped and respectively connected with the first joint and the second joint;

the first socket comprises a socket head connected with one end of a first connector and a flared tube coaxially arranged outside the socket head and connected with the outer surface of the first connector, an annular accommodating cavity is formed between the flared tube and the socket head, an annular cavity is formed in the flared tube close to the end of the flared tube, a plurality of through holes communicated with one another are formed between the cavity and the accommodating cavity, a plurality of clamping plates are arranged in the cavity along the curved surface direction of the cavity, the middle position of the bottom of each clamping plate is connected with the inner wall of the cavity through a hinge seat, one end of each clamping plate in the length direction penetrates through the cavity and extends to the outside, and a buckle plate is connected to the bottom of the clamping plate, namely, the clamping plates can perform overturning motion in the cavity through the hinge seats, and in order to facilitate overturning motion of the clamping plates, the scheme is characterized in that a strip-shaped through groove is formed in the end surface of the flared tube and the position corresponding to the through position of the clamping plates;

the second plug section comprises a connector, one end of the connector is connected with the second connector pipe, the other end of the connector is inserted into the plug section, the connector is coaxially sleeved outside the connector, one end of the connector is connected with the second connector, the other end of the connector extends into the accommodating cavity and is matched with the accommodating cavity, a plurality of elastic pins matched with the through holes are arranged on the outer surface of the clamping pipe corresponding to the through holes, the elastic pins are matched with the through holes and penetrate through the through holes to be abutted against the clamping plate, and a plurality of baffle plates are arranged on the outer surface of the clamping pipe along the curved surface direction; after the second joint is well butted with the first joint, the elastic pin penetrates through the through hole to be butted with the clamping plate and pushes the clamping plate to rotate through the hinged seat, so that the buckling plate and the baffle are driven to be buckled and the second joint and the first joint are clamped.

It should be noted that, based on the existing anti-drop joint, the joint strength is not sufficient, the pulling resistance is poor, and after the pipeline is connected, the pipeline is easily pulled by external force to drop accidentally, so that the use effect of the joint is affected and serious consequences are caused.

Furthermore, an annular insertion groove for inserting the plug is formed between the clamping pipe and the connector, and a friction increasing assembly for increasing the friction force between the plug and the insertion groove is arranged in the insertion groove.

As the preferred mode of friction increase subassembly, the friction increase subassembly includes a plurality of settings at the inside sleeve pipe of socket, and the slip cap is established at cover intraduct, the bottom is connected with the piston board that runs through to the push rod of socket inner wall, push rod, piston board and sleeve pipe form the inflater structure, socket outer wall is equipped with a plurality of and sleeve pipe one-to-one's inflation cover, be linked together through the hole between inflation cover and the sleeve pipe.

Specifically, friction increase subassembly still is equipped with a plurality ofly still including setting up in the inside of inserting groove and being located joint pipe inner wall position department and overlapping the lug of meshing to and set up at the connector outer wall, and with the wedge of push rod bottom looks butt, the wedge is inserted to the connector when inside, can be used to promote the push rod and makes it drive piston plate shift up in the sleeve pipe.

It should be noted here that, while the user butt-joints the first joint and the second joint, that is, when the clamping pipe is inserted into the accommodating cavity and supports the clamping plate in the cavity through the elastic pin, the socket joint is also inserted into the insertion groove, and when the socket joint enters the insertion groove, the connector also enters the interior of the socket joint, and the wedge-shaped blocks located around the outer wall of the connector can support the push rod along with the movement of the connector, so that the push rod pushes the piston plate to move in the sleeve.

Further, as a preferable scheme of a plugging measure after the anti-dropping joint drops, a disconnecting plugging component is further arranged inside the first joint;

the disconnecting plugging component comprises a core column which is coaxially arranged in the first connector and is connected with the inner wall of the first connector through a support, a sleeve which is sleeved on the outer surface of one end of the core column close to the second connector and is in sliding connection with the core column along the axial direction of the core column, a supporting spring which is arranged between the sleeve and the core column, supporting rods which are annularly arranged around the core column and are hinged with the core column at the bottom ends, supporting rods which are hinged with the supporting rods at one ends and are obliquely and downwards arranged along the direction far away from the supporting rods at the other ends and are hinged with the outer surface of the sleeve, plugging valve gaskets which are attached to the outer surfaces of the supporting rods, and check rings which are arranged on the inner wall of the first connector, and further, a plugging part which is used for abutting against the plugging valve gaskets is arranged at the position of one end, close to the plugging valve gaskets, of the check rings, through the arrangement of the plugging part and the plugging valve pad, after the first connector is disconnected with the second connector, the plugging assembly can be disconnected to timely perform intervention action so that the plugging valve pad is abutted against the plugging part, so that the first connector is plugged and closed, and accidents caused by leakage are avoided; when the first joint and the second joint drop off due to accidents, namely after the first joint and the second joint are disconnected, the sleeve can slide to the original position under the elastic action of the supporting spring to drive the supporting rod to pull the supporting rod to turn over to the initial position, namely the supporting rod drives the plugging valve plate to turn over to the plugging part of the check ring and to be in abutting contact with the blocking part, so that the inside of the first joint is plugged, and leakage is avoided. Furthermore, in the present scheme, the strut and the strut are similar to the framework, and the plugging valve pad is attached to the strut, so that the plugging valve pad can expand or contract along with the reciprocating turnover of the strut, thereby realizing the communication or closure of the first connector and the second connector.

Further, the one end that the stem was kept away from to the sleeve is equipped with the pressure head, still is connected with the top through the support in the inside of connector, the one end that the top corresponds the pressure head extends to the outside that the second connects. Particularly, set up pressure head and top, be convenient for the user when being connected second joint and first joint, the top can extrude the pressure head, slide on the stem in order to promote the sleeve, thereby drive shutoff valve pad expansion through vaulting pole and branch, and separate and form the space runner with the shutoff portion of retaining ring, with this realization first joint and second joint intercommunication, and after second joint and first joint disconnection, the top will separate with the pressure head, with this pressure head will no longer receive the oppression of top, thereby the sleeve can slide to initial position, and pull the shutoff valve plate through vaulting pole and branch and make its shrink and with shutoff portion butt, with this inside to first joint carries out the shutoff and seals.

Preferably, the retainer ring is divided into a flared section and a constricted section in a direction gradually away from the first joint. Through the setting of flaring section and throat section, can make the inside runner cavity that becomes gradually the increase earlier of retaining ring back gradual change and dwindle to when carrying out the rapid flow through first joint, the guide assembles to it, so that its quick joint connection position department of passing through of being convenient for, and avoid it to take place to leak.

An LNG pump skid comprises a body; the anti-dropping pipeline is characterized in that a pipeline is connected to the body, and an anti-dropping joint is arranged on the pipeline.

Compared with the prior art, the invention has the following advantages and beneficial effects:

(1) According to the invention, through the arrangement of the clamping plate, the buckling plate, the elastic pin and the stop block, after a user inserts the first joint and the second joint through the first insertion joint and the second insertion joint, the elastic pin can be inserted into the cavity through the through hole and jacks the clamping plate, so that the clamping plate can rotate through the hinge base after being propped by the elastic pin, the clamping plate can drive the buckling plate to buckle the baffle after rotating, and then the first joint and the second joint are clamped, so that the first joint and the joint can be clamped and fixed when being connected by the user, the installation and connection of the first joint and the joint are more convenient and fast, and meanwhile, through the arrangement of the friction increasing component, the friction force between the insertion joint and the insertion groove can be greatly increased when the first joint and the second joint are inserted and connected, so that the connection strength of the first joint and the second joint is further enhanced, and the tensile resistance of the first joint and the second joint is better;

(2) According to the invention, by disconnecting the plugging component, the plugging component can be disconnected to intervene in time under the condition that the first connector and the second connector fall off accidentally, and the plugging valve pad is abutted to the plugging part, so that the first connector is plugged and closed, the accident caused by leakage is avoided, the use effect of the anti-falling connector is greatly improved, and the safety of the anti-falling connector is better.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic view of the friction increasing assembly of the present invention;

FIG. 3 is a schematic view of a first connector structure according to the present invention;

FIG. 4 is a schematic view of a second terminal structure according to the present invention;

FIG. 5 is a schematic view of the enlarged partial structure at the position A;

FIG. 6 is a schematic view of the enlarged partial structure of the present invention at B;

fig. 7 is a schematic structural view of the plugging valve plate of the invention.

In the drawings, the names of the components corresponding to the reference numerals are as follows:

1. a first joint; 2. a second joint; 3. a plug-in part; 30. a first socket section; 300. a plug-in joint; 301. a flared tube; 302. an accommodating chamber; 303. a cavity; 304. clamping a plate; 305. a hinged seat; 306. buckling the plate; 31. a second socket; 310. a connector; 311. clamping the connecting pipe; 312. an elastic pin; 313. a baffle plate; 314. inserting grooves; 32. a friction increasing assembly; 320. a sleeve; 321. a piston plate; 322. a push rod; 323. an expansion sleeve; 324. a bump; 33. disconnecting the plugging assembly; 330. a stem; 331. a sleeve; 332. a strut; 333. a stay bar; 334. plugging the valve pad; 335. a retainer ring; 336. a plugging section; 337. a pressure head; 338. and (4) ejecting the head.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

First, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Example 1

As shown in fig. 1 to 6, the present embodiment provides an anti-separation joint, including a first joint 1 and a second joint 2 which are butted with each other, where the first joint 1 and the second joint 2 are connected by an inserting portion 3, and the inserting portion 3 includes a first inserting section 30 and a second inserting section 31 which are clamped with each other and connected with the first joint 1 and the second joint 2 respectively;

the first socket 30 comprises a socket head 300 connected with one end of the first joint 1, and an expanding pipe 301 coaxially arranged outside the socket head 300 and connected with the outer surface of the first joint 1, an annular accommodating cavity 302 is formed between the expanding pipe 301 and the socket head, an annular cavity 303 is formed in the position, close to the end part, inside the expanding pipe 301, a plurality of through holes communicated with each other are formed between the cavity 303 and the accommodating cavity 302, a plurality of clamping plates 304 are arranged inside the cavity 303 along the curved surface direction, the middle position of the bottom of each clamping plate 304 is connected with the inner wall of the cavity 303 through a hinged base 305, one end of each clamping plate 304 in the length direction penetrates through the cavity 303 and extends to the outside, and the bottom of each clamping plate 304 is connected with a clamping plate 306, namely, the clamping plates 304 can perform overturning motion in the cavity 303 through the hinged bases, and the clamping plates 304 perform overturning motion in order to facilitate the end surface of the expanding pipe 301 and the positions corresponding to the through positions of the clamping plates 304 to be provided with strip-shaped through grooves;

the second plug section 31 comprises a connector 310 with one end connected with the second connector 2 pipe and the other end inserted into the plug section 300, a clamping tube 311 coaxially sleeved outside the connector 310, with one end connected with the second connector 2 and the other end extending into the accommodating cavity 302 and adapted to the accommodating cavity, a plurality of elastic pins 312 adapted to the through holes are arranged at the positions of the outer surface of the clamping tube 311 corresponding to the through holes, the elastic pins 312 are adapted to the through holes and penetrate through the through holes to abut against the clamping plates 304, and a plurality of baffle plates 313 are arranged on the outer surface of the clamping tube 311 along the curved surface direction; after the second connector 2 is connected to the first connector 1, the elastic pin 312 passes through the through hole to abut against the snap plate 304 and push it to rotate through the hinge base 305, so as to drive the snap plate 306 to be fastened to the baffle 313 and clamp the second connector 2 to the first connector 1.

It should be noted that, based on the existing anti-drop joint, the connection strength is not sufficient, the pulling resistance is poor, and after the pipe is connected, the pipe is easily pulled by an external force to drop accidentally, thereby affecting the use effect of the joint and causing serious consequences, based on the arrangement of the snap plate 304, the snap plate 306, the elastic pin 312 and the stopper, after the user plugs the first joint 1 and the second joint 2 through the first socket 30 and the second socket 31, the elastic pin 312 can be inserted into the cavity 303 through the through hole and jacks the snap plate 304, so that the snap plate 304 can rotate through the hinge base 305 after being propped by the elastic pin 312, so that the snap plate 304 rotates to drive the snap plate 306 to buckle the stopper 313, and further clamp the first joint 1 and the second joint 2, so that the user can clamp and fix the first joint 1 and the joint when connecting the first joint 1 and the joint.

An annular insertion groove 314 for inserting the plug joint 300 is formed between the clamping pipe 311 and the connector 310, a friction increasing assembly 32 for increasing the friction force between the plug joint 300 and the insertion groove 314 is arranged in the insertion groove 314, and in order to further improve the sealing performance of the clamping pipe 311 inserted into the plug joint 300, a circle of sealing gasket is arranged on the outer surface of the end portion of the clamping pipe 311.

As a preferable mode of the friction increasing assembly 32, the friction increasing assembly 32 includes a plurality of sleeves 320 arranged inside the socket 300, a piston plate 321 slidably sleeved inside the sleeves 320 and having a bottom connected to a push rod 322 penetrating through an inner wall of the socket 300, the push rod 322, the piston plate 321 and the sleeves 320 form an inflator structure, a plurality of expansion sleeves 323 corresponding to the sleeves 320 one by one are arranged on an outer wall of the socket, and the expansion sleeves 323 are communicated with the sleeves 320 through holes.

Specifically, the friction increasing assembly 32 further includes a plurality of protrusions 324 disposed inside the insertion groove 314 and located on the inner wall of the fastening tube 311, the protrusions being engaged with the expansion sleeves 323 in a staggered manner, and a wedge block disposed on the outer wall of the connector 310 and abutting against the bottom end of the push rod 322, and when the connector 310 is inserted into the insertion joint 300, the wedge block can be used to push the push rod 322 to drive the piston plate 321 to move up in the sleeve 320.

It should be noted that, while the user is butting the first connector 1 and the second connector 2, that is, while the clamping tube 311 is inserted into the receiving cavity 302 and supports the clamping plate 304 in the cavity 303 by the elastic pin 312, the plug is inserted into the insertion groove 314, and while the plug enters the insertion groove 314, the connector 310 enters the interior of the plug 300, and the wedge-shaped block around the outer wall of the connector 310 supports the push rod 322 along with the movement of the connector 310, so that the push rod 322 pushes the piston plate 321 to move in the sleeve 320, and it should be noted that, in this embodiment, the push rod 322, the piston plate 321, and the sleeve 320 form an inflator structure, so that when the push rod 322 pushes the piston plate 321 to move upward, the air in the sleeve 320 can enter the expansion sleeve 323 through the hole, so that the expansion sleeve 323 inflates and engages with the protrusion 324, so that the friction force between the plug 300 and the insertion groove 314 is greatly increased, thereby further enhancing the connection strength between the first connector 1 and the second connector 2, and further enhancing the clamping strength of the connector 2, and the wedge-shaped joint is located at a position where the inclined portion (the wedge-shaped joint 310 is located).

Example 2

Referring to fig. 1 and 7, in the present embodiment, based on embodiment 1, only the differences from embodiment 1 are described, and as a preferred scheme of a blocking measure after the anti-drop joint drops, a breaking and blocking assembly 33 is further disposed inside the first joint 1;

the breakable plugging assembly 33 includes a stem 330 coaxially disposed inside the first connector 1 and connected to an inner wall of the first connector 1 through a bracket, a sleeve 331 sleeved on an outer surface of one end of the stem 330 near the second connector 2 and slidably connected to the stem 330 along an axial direction of the stem 330, a support spring disposed between the sleeve 331 and the stem 330, a support rod 332 annularly disposed around the stem 330 and having a bottom end hinged to the stem 330, a support rod 333 having one end hinged to the support rod 332 and the other end obliquely disposed downward in a direction away from the support rod 332 and hinged to an outer surface of the sleeve 331, a plugging valve pad 334 attached to an outer surface of each of the support rods 332, and a check ring 335 disposed on an inner wall of the first connector 1, further, a plugging portion 336 disposed at a position 334 of the check ring 335 near the plugging valve pad 334 for abutting against the plugging valve pad is provided, it is noted that the sleeve 331 slides on the outer surface of the stem 330, a plurality of balls may be embedded in a region where the inner wall of the sleeve coincides with the outer surface of the stem 330 to reduce friction force therebetween, and a sealing washer may be further disposed at an opening position of the sleeve 331 at an end thereof.

According to the scheme, through the arrangement of the blocking part 336 and the blocking valve pad 334, after the first connector 1 is disconnected from the second connector 2, the blocking component 33 can be timely interrupted to enable the blocking valve pad 334 to be abutted against the blocking part 336, so that the first connector 1 can be timely blocked and closed, and accidents caused by leakage are avoided; when the first joint 1 and the second joint 2 are accidentally disengaged, that is, after the first joint 1 and the second joint 2 are disconnected, the sleeve 331 can slide to the original position under the elastic force of the supporting spring to drive the supporting rod 333 to pull the supporting rod 332 to turn to the initial position, that is, the supporting rod 332 drives the blocking valve plate to turn to the blocking portion 336 of the blocking ring 335 and to be in abutting contact with the blocking portion, so as to block the inside of the first joint 1 and avoid leakage. Furthermore, in the present embodiment, the supporting rod 333 and the supporting rod 332 are similar to a framework, and the plugging valve pad 334 is attached to the supporting rod 332, so that it can expand or contract along with the reciprocal rotation of the supporting rod 332, thereby realizing the communication or closing of the first connector 1 and the second connector 2, it should be noted that, in order to facilitate the plugging valve pad 334 to completely plug the inside of the first connector 1, the plugging valve pad 334 is integrally circular and fits with the inner wall of the first connector 1, and the middle position thereof is sleeved on the stem 330 through an opening and a sealing washer which are adapted to the stem 330.

Further, one end of the sleeve 331, which is far away from the stem 330, is provided with a pressing head 337, and a plug 338 is further connected to the inside of the connecting head 310 through a bracket, and one end of the plug 338, which corresponds to the pressing head 337, extends to the outside of the second connector 2. Specifically, the arrangement of the pressing head 337 and the pushing head 338 is convenient for a user to press the pressing head 337 to push the sleeve 331 to slide on the stem 330 when connecting the second connector 2 with the first connector 1, so that the plugging valve pad 334 is driven to expand by the support rod 333 and the support rod 332 and separate from the plugging portion 336 of the retainer ring 335 to form a clearance flow channel, thereby realizing the communication between the first connector 1 and the second connector 2, and when the second connector 2 is disconnected from the first connector 1, the pushing head 338 is separated from the pressing head 337, so that the pressing head 337 is not pressed by the pushing head 338, and the sleeve 331 can slide to an initial position, and the plugging valve plate is pulled by the support rod 333 and the support rod 332 to contract and abut against the plugging portion 336, thereby sealing the inside of the first connector 1.

As a preferred mode of the retainer 335, the retainer 335 is divided into a flared section and a constricted section in a direction gradually away from the first coupling 1. Through the arrangement of the flaring section and the necking section, the flow channel cavity 303 which is gradually increased and then gradually reduced is formed inside the check ring 335, so that the LNG fuel is conveniently gathered and guided when rapidly flowing through the first connector 1, the LNG fuel rapidly passes through the connector connecting position, and the leakage of the LNG fuel is avoided.

Example 3

Referring to fig. 1 to 7, the present embodiment provides an LNG pump skid based on embodiments 1 and 2, including a body; the anti-dropping pipeline is characterized in that a pipeline is connected to the body, and an anti-dropping joint is arranged on the pipeline.

The principle of the present solution is briefly explained below according to the above embodiments:

firstly, when a user connects a pipeline by using the anti-drop joint, the user can respectively connect the first joint 1 and the second joint 2 with the pipeline to be connected, then the user can butt the first joint 1 and the second joint 2 by the first socket 30 and the second socket 31, when butt joint is performed, the connector 310 is inserted into the socket 300, the socket 300 and the clamping pipe 311 respectively enter the accommodating cavity 302 and the inserting groove 314, when the clamping pipe 311 enters the accommodating cavity 302, the elastic pin 312 is in a compressed state, so that the elastic pin 312 cannot obstruct the entering of the clamping pipe 311, after the connecting pipe is inserted in place, the elastic pin 312 can be inserted into the cavity 303 through the through hole and jack up the clamping plate 304, so that the clamping plate 304 can rotate by the hinge seat 305 after being jacked by the elastic pin 312, so that the clamping plate 304 drives the baffle 313 to be fastened by the hinge seat 306 after rotating, and then the first joint 1 and the second joint 2 are clamped and clamped, and at the same time, when the socket head enters the socket groove 314, the wedge-shaped block supports the push rod 322 along with the movement of the connector 310, so that the push rod 322 pushes the piston plate 321 to move in the sleeve 320, and it should be noted that in this embodiment, the push rod 322, the piston plate 321 and the sleeve 320 form a pump structure, so that when the push rod 322 pushes the piston plate 321 to move upwards, the gas in the sleeve 320 can enter the expansion sleeve 323 through the hole, so that the expansion sleeve 323 inflates and engages with the protrusion 324, thereby greatly increasing the friction force between the socket head 300 and the socket groove 314, further enhancing the connection strength between the first joint 1 and the second joint 2, and making the pulling resistance better, further, when the first connector 1 is connected to the second connector 2, the top 338 located in the connector 310 extrudes the pressure head 337, so that after the pressure head 337 is pressed, the top pushes the sleeve 331 to compress the support spring under the action of external force and slide on the outer surface of the stem 330, so that the sleeve 331 pushes the support rod 332 to turn over through the support rod 333 after sliding, and further the support rod 332 turns over to drive the blocking valve pad 334 to separate from the blocking portion 336 of the retainer ring 335 and form a gap flow channel, thereby realizing communication between the first connector 1 and the second connector 2, and when the first connector 1 and the second connector 2 accidentally fall off, that is, after the first connector 1 and the second connector 2 are disconnected, the sleeve 331 can slide to the original position under the elastic force of the support spring to drive the support rod 333 to pull the support rod 332 to turn over to the initial position, so that the support rod 332 drives the blocking valve plate 335 to turn over to the blocking portion 336 of the retainer ring and contact with the blocking portion 335 tightly, thereby realizing blocking of the inside of the first connector 1 and avoiding leakage.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. An anti-drop joint comprises a first joint (1) and a second joint (2) which are mutually butted, and is characterized in that the first joint (1) and the second joint (2) are connected through an inserting part (3), and the inserting part (3) comprises a first inserting joint (30) and a second inserting joint (31) which are mutually clamped and respectively connected with the first joint (1) and the second joint (2);

the first socket (30) comprises a socket head (300) connected with one end of the first connector (1), and a flared pipe (301) which is coaxially arranged outside the socket head (300) and connected with the outer surface of the first connector (1), an annular accommodating cavity (302) is formed between the flared pipe (301) and the socket head, an annular cavity (303) is formed in the flared pipe (301) close to the end part of the flared pipe, a plurality of mutually communicated through holes are formed between the cavity (303) and the accommodating cavity (302), a plurality of clamping plates (304) are arranged in the cavity (303) along the curved surface direction of the cavity, the middle position of the bottom of each clamping plate (304) is connected with the inner wall of the cavity (303) through a hinged seat (305), one end of each clamping plate (304) in the length direction penetrates through the cavity (303) and extends to the outside, and the bottom of the clamping plate (304) is connected with a buckle plate (306);

the second plug section (31) comprises a connector (310) with one end connected with the second connector (2) pipe and the other end inserted into the plug section head (300), a clamping pipe (311) which is coaxially sleeved outside the connector (310), with one end connected with the second connector (2) and the other end extending into the accommodating cavity (302) and matched with the accommodating cavity, a plurality of elastic pins (312) matched with the through holes are arranged at the positions, corresponding to the through holes, of the outer surface of the clamping pipe (311), the elastic pins (312) are matched with the through holes and penetrate through the through holes to be abutted against the clamping plate (304), and a plurality of baffle plates (313) are arranged on the outer surface of the clamping pipe (311) along the direction of the curved surface; after the second connector (2) is connected with the first connector (1) in an abutting mode, the elastic pin (312) penetrates through the through hole to abut against the clamping plate (304) and pushes the clamping plate to rotate through the hinged seat (305), so that the buckling plate (306) is driven to be buckled with the baffle (313), and the second connector (2) and the first connector (1) are clamped;

an annular insertion groove (314) for inserting the insertion joint (300) is formed between the clamping pipe (311) and the connector (310), and a friction increasing assembly (32) for increasing the friction force between the insertion joint (300) and the insertion groove (314) is arranged in the insertion groove (314);

the friction increasing assembly (32) comprises a plurality of sleeves (320) arranged inside the socket head (300), the sliding sleeve is arranged inside the sleeves (320), the bottom of the sliding sleeve is connected with a piston plate (321) of a push rod (322) penetrating through the inner wall of the socket head (300), the push rod (322), the piston plate (321) and the sleeves (320) form an inflator structure, the outer wall of the socket head is provided with a plurality of expansion sleeves (323) which are in one-to-one correspondence with the sleeves (320), and the expansion sleeves (323) are communicated with the sleeves (320) through holes;

the friction increasing assembly (32) further comprises a plurality of protruding blocks (324) which are meshed with the expansion sleeves (323) in a staggered mode and are arranged in the inserting groove (314) and located on the inner wall of the clamping pipe (311), and a wedge block which is arranged on the outer wall of the connector (310) and abutted to the bottom end of the push rod (322), wherein the wedge block can be used for pushing the push rod (322) to drive the piston plate (321) to move upwards in the sleeve (320) when the connector (310) is inserted into the inserting joint (300).

2. The anti-drop joint according to claim 1, wherein a breaking and plugging component (33) is further arranged inside the first joint (1), the breaking and plugging component (33) comprises a core column (330) which is coaxially arranged inside the first joint (1) and connected with the inner wall of the first joint (1) through a support, a sleeve (331) which is sleeved on the outer surface of one end, close to the second joint (2), of the core column (330) and is slidably connected with the core column (330) along the axial direction of the core column (330), a supporting spring which is arranged between the sleeve (331) and the core column (330), a supporting rod (333) which is annularly arranged around the core column (330) and is hinged with the core column (330) at the bottom end, a plugging valve pad (334) which is attached to the outer surface of each supporting rod (332), and a retainer ring (335) which is arranged on the inner wall of the first joint (1), and a position, close to the plugging valve pad (334) is provided with an abutting joint part (336).

3. The anti-drop joint as claimed in claim 2, wherein the sleeve (331) is provided with a pressing head (337) at an end away from the stem (330), a top head (338) is further connected to the inside of the joint (310) through a bracket, and an end of the top head (338) corresponding to the pressing head (337) extends to the outside of the second joint (2).

4. Anti-slip joint according to claim 2, characterized in that the collar (335) is divided into a flared section and a tapered section in the direction gradually away from the first joint (1).

5. An LNG pump skid comprises a body; the anti-drop connector is characterized in that the pipeline is provided with the anti-drop connector as claimed in any one of claims 1 to 4.