CN212480141U

CN212480141U - Quick joint for liquefied gas filling

Info

Publication number: CN212480141U
Application number: CN202021176160.9U
Authority: CN
Inventors: 信鑫
Original assignee: Believers
Current assignee: Believers
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-02-05
Anticipated expiration: 2030-06-22

Abstract

The utility model relates to the liquefied gas transportation field, in particular to a quick joint for liquefied gas filling, which comprises a connecting part and a flow guide part, wherein the inside of the connecting part is communicated with the inside of the flow guide part through a liquid channel; connecting portion include locking ring and solid fixed ring, the locking ring can be rotatory around solid fixed ring's center, and the activity is equipped with a plurality of latch segments on the solid fixed ring, the latch segment can be equipped with a plurality of check holes to solid fixed ring axle center motion on the solid fixed ring, latch segment one end stretches into in the check hole, latch segment and locking ring swing joint, connect more swiftly, firmly reliably, and the precompression through the water conservancy diversion hole is balanced simultaneously, can be reliable to connecting, whether there is the leakage to carry out the preliminary examination, in case connect unreliable, or there is the leakage, the operation hand wheel valve can't be opened under the pressure of liquid, in time discovers danger, the design of plunger structure also can make liquid remain and reduce.

Description

Quick joint for liquefied gas filling

Technical Field

The utility model relates to a liquefied gas transportation field, concretely relates to quick-operation joint for liquefied gas filling.

Background

With the severe environment protection form, the consumption of gas fuels such as natural gas and liquefied gas is accelerated, and the transportation volume of the gas fuels such as natural gas and liquefied gas is increased rapidly. The transportation modes of liquefied gas in inland are mainly pipeline transportation and automobile filling transportation.

The automobile filling transportation is a mode for transporting liquefied gas by an automobile transporting liquefied gas tank. The transportation process involves loading and unloading of liquefied gas. Traditional loading and unloading process pulls the fastener and connects for adopting handle formula quick-operation joint, connects liquefaction air supply and groove jar, opens the direct filling of ball valve, because connect the shape reason, connects unreliable, produces easily and leaks, has danger to because the structure reason of ball valve, remain more liquefied gas in joint department easily, take place the gasification after dismantling easily, produce danger.

SUMMERY OF THE UTILITY MODEL

The utility model provides a quick-operation joint for liquefied gas filling connects more swiftly, and is firm reliable, and the precompression through the water conservancy diversion hole is balanced simultaneously, can be to connecting whether reliable, whether have the leakage to carry out the preliminary examination, in case connect unreliable, or have the leakage, the operation hand wheel valve can't be opened under the pressure of liquid, in time discovers danger, and the design of plunger structure also can make liquid remain the reduction.

The utility model discloses the technical scheme who specifically adopts is:

a quick coupling for liquefied gas filling comprises a connecting portion and a flow guide portion, wherein the connecting portion is used for being connected with a tank car connector, the flow guide portion is used for allowing liquefied gas to pass through, and the connecting portion and the flow guide portion are communicated through a liquid channel. The connecting part comprises a fixing ring sleeved on the tank car joint and a locking ring which is coaxial with the fixing ring and can rotate along the axis outside the fixing ring, a plurality of through holes are formed in the fixing ring, locking blocks are arranged in the through holes and can move relative to the axis in the locking holes, locking holes corresponding to the locking blocks are formed in corresponding positions on the locking ring, one end of each locking block can extend into the corresponding locking hole in a normal state, the other end of each locking block does not influence the sleeving of the fixing ring into the tank car joint, after the fixing ring is sleeved into the tank car joint, a groove in the tank car joint is aligned with the locking block in position, the locking holes and the locking blocks are staggered by rotating the locking ring, the locking blocks can be pressed to move towards the axis, the locking blocks are clamped into grooves in the.

In order to facilitate the rotation of the locking ring, the locking block is designed to have an inclined surface at the part extending into the locking hole, the shape in the locking hole is the corresponding shape of the inclined surface, and when the locking ring is rotated, the locking ring can be rotated more easily by the matching of the inclined surfaces, so that the locking block is pressed. The locking ring is externally connected with a locking handle for rotating the locking ring.

In order to prevent the locking ring from deviating easily in the locking state, the steel balls are arranged on the fixing ring, the corresponding steel ball positioning grooves are formed in the inner side of the locking ring, when the locking ring is rotated to enter the locking state, the steel balls are aligned with the steel ball positioning grooves, and the steel balls are clamped into the steel ball positioning grooves to fix the locking ring.

The water conservancy diversion portion is including the plunger that can move about in water conservancy diversion portion, and plunger one end is for being used for blockking up the plunger body of liquid channel, and the other end is for being used for driving the removal storehouse that the plunger body removed. The inner wall of the movable bin is matched with the flow guide portion, the movable bin can move inside the flow guide portion, rack grooves which are in the same direction as the flow guide portion are formed in the movable bin, racks are arranged inside the rack grooves in a matched mode, and the racks can slide in the rack grooves. The rack is provided with a gear in a matching way, and when the gear rotates, the rack is driven to slide in the rack groove, so that the moving bin is driven to move. The length in rack groove needs to be greater than the length of rack for there is a certain virtual location between rack and the rack groove, when the rack slides, the rack slides to the other end from the one end that is close to the plunger body earlier, makes the rack support with the removal bulkhead, and the rethread motion drives and removes the storehouse and removes.

A flow guide hole penetrating through the plunger body is formed in the plunger body, one end of the flow guide hole is communicated with the liquid channel, the other end of the flow guide hole is communicated with the moving bin, the position of the flow guide hole is aligned with the rack, and when the rack is located close to one end of the liquid channel, the rack can block the flow guide hole.

A hand wheel is arranged outside the flow guide part, and the axis of the hand wheel penetrates through the shell of the flow guide part to be connected with the gear inside the flow guide part and is used for rotating the gear.

The utility model discloses a theory of operation is: when the locking ring is in a normal unconnected state, the locking hole is aligned with the locking block, and the locking block extends into the locking hole, so that the sleeving of the fixing ring is not influenced; the plunger body blocks the liquid channel, the rack is positioned at one end blocking the flow guide hole, and liquid cannot pass through the rack; the guide end is mounted on the container to be filled through a flange. During connection, the fixing ring is sleeved on the tank car connector, the position of the locking block is aligned to the groove on the tank car connector, the locking ring is rotated, the locking ring and the locking block are staggered, the locking block is pressed into the groove of the tank car connector by the inner side of the locking ring to complete connection, meanwhile, the steel ball positioning groove in the locking ring is aligned with the steel ball outside the fixing ring, and the steel ball is pressed into the steel ball positioning groove to limit the locking ring. The hand wheel is rotated, the gear drives the rack to slide in the rack groove, the rack slides to the other end of the rack groove, the flow guide hole is communicated, a small amount of liquid flows into the movable bin through the flow guide hole, the pressure on one side of the container and one side of the tank car start to be balanced, the gear continues to be rotated, the rack supports against the movable bin and drives the movable bin to move together, the plunger body is pulled out outwards, and due to the pressure balance of the two sides, the plunger body is pulled out very easily, the liquid channel is opened, and filling is started. After the filling, rotate the hand wheel, drive and remove the storehouse and to remove in the opposite direction, the plunger body is pushed liquid channel, blocks up liquid channel, and the locking handle is rotated in the opposite direction hard afterwards, makes the steel ball deviate from in the steel ball constant head tank, and rotatory to the initial position with the locking ring, the locking hole aligns with the latch segment, and the latch segment is no longer oppressed, and the downthehole activity of locking can be locked again, no longer influences solid fixed ring, and the dismantlement can be accomplished to direct solid fixed ring of taking off.

Simultaneously, in the unconnected state, the position of locking handle can cooperate with the ball valve handle position on the tank car connects, and when not locking, the locking handle influences the rotation of ball valve handle for can't open the ball valve when not locking, safer.

Compared with the prior art, the utility model discloses the advantage is:

(1) the connection is firm, and the plurality of locking blocks are linked to lock the joint of the tank car, so that the connection is more reliable;

(2) the limiting steel ball is arranged, so that the locking ring is prevented from rotating by mistake due to mistake contact, and the locking ring is more reliable;

(3) the pressure on the two sides is balanced in advance through the flow guide holes, so that the plunger is more easily pulled out, and a liquid channel is opened;

(4) the leakage detection can be carried out, when leakage occurs, the pressure cannot be balanced, the resistance is larger when the plunger is pulled out relative to the normal state, and operators are reminded of the possibility of leakage;

(5) less liquid remains in the joint, and the residual liquid is only the space of the connecting part after disassembly, so that the joint is safer.

Drawings

Fig. 1 is a cross-sectional view of the present application.

Fig. 2 is a view showing the structure of the fixing ring.

Fig. 3 is a sectional view of the connecting portion.

Fig. 4 is a perspective view of the present application.

In the figure, 1, a locking ring, 2, a fixing ring, 3, a locking block, 4, a sealing ring, 5, a flow guide hole, 6, a rack, 7, a rack groove, 8, a moving cabin, 9, a flange interface, 10, a gear, 11, a shell, 12, a plunger body, 13, a steel ball, 14, a locking handle, 15, a through hole, 16, a locking hole, 17, a hand wheel, 18 and a liquid channel are arranged.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

The utility model provides a quick-operation joint for liquefied gas filling, the outside is column casing 11, and the one end of casing 11 is flange interface 9 for be connected to on the container that needs the filling, the other end is for being connected to the connecting portion on the tank car connects, and casing 11 is inside to be passed through liquid channel 18 and connecting portion intercommunication, and liquid channel 18 is equipped with sealing washer 4 around, and cooperation plunger body 12 carries out sealed jam. The connecting portion is coaxial with the housing 11.

The connecting part comprises a fixing ring 2 sleeved on the joint of the tank car and a locking ring 1 which is coaxial with the fixing ring and can rotate along the axis outside the fixing ring 2, the fixing ring 2 and the shell 11 are welded into a whole, and a locking handle 14 is connected to the right upper side of the locking ring 1 and used for rotating the locking ring 1. Three rectangular through holes 15 are uniformly formed in the fixing ring 2, three circular-arc-shaped locking blocks 3 are respectively placed in the respective through holes 15, and the locking blocks 3 can move relative to the axis in the through holes 15; three locking holes 16 are formed in the locking ring 1 at positions aligned with the three locking blocks 3, one ends of the locking blocks 3 can extend into the locking holes 16 in a normal state, and the other ends of the locking blocks do not influence the sleeving of the fixing ring 2 into the tank car connector. In order to facilitate the rotation of the locking ring 1, the part of the locking block 3, which extends into the locking hole 16, is designed to be a wedge-shaped inclined surface, the shape in the locking hole 16 is a corresponding wedge-shaped inclined surface, when the locking ring 1 is rotated, the wedge-shaped inclined surface is matched to enable the locking ring 1 to rotate more easily, the locking block 3 is pressed by the locking ring 1 and moves towards the axis, and meanwhile, the wedge-shaped inclined surface can also form a barrier with the through hole 15, so that the locking block 3 cannot fall out of the through hole 15 when not in a locking state. The position of the locking block 3 is designed to be aligned with the groove part of the tank car joint, and the locking block 3 can be clamped into the groove after moving towards the axis to be fixedly connected. The outer side of the fixed ring 2 is provided with a steel ball 13, the steel ball 13 can rotate, the inner side of the fixed ring 1 is provided with steel ball positioning holes (not shown in the figure) at the same positions which are separated by 90 degrees when in an unconnected state (when in connection, the locking handle only needs to rotate by 90 degrees), and the steel ball 13 can be clamped in the steel ball positioning holes.

The inside plunger that can move in casing 11 that includes of casing, plunger one end is for blockking up the column plunger body 12 of liquid passageway, and the other end is for driving the removal storehouse 8 that plunger body 12 removed. The two ends of the movable bin 8 are in fan blade shapes, can move in the shell 11, and do not influence the circulation of liquid, and the fan shapes at the two ends are connected through the rack grooves 7. The plunger body 12 and the fixed ring 2 are coaxial, a flow guide hole 5 penetrating through the plunger body 12 along the axis is arranged at the axis, and the flow guide hole 5 is communicated with the liquid channel 18 and the space of the movable bin 8.

The rack 6 is arranged in the rack groove 7 in a matching way, and the rack 6 can horizontally slide in the rack groove 7 along the axial direction. The rack 6 is provided with a gear 10 in a matching way, and when the gear 10 rotates, the rack 6 is driven to slide in the rack groove 7, so that the moving bin 8 is driven to move. The gear 10 is cylindrical and is perpendicular to the rack 6, one end of the gear 10 penetrates through the shell 11 and is provided with a hand wheel 17, and the gear 10 can be rotated by rotating the hand wheel 17. The length of rack groove 7 needs to be greater than the length of rack 6 for there is certain virtual position between rack 6 and the rack groove 7, when rack 6 slides, rack 6 slides to the other end from the one end that is close to plunger body 12 earlier, makes rack 6 and the fan-shaped position of removing 8 one ends of storehouse support, and the motion drives again and removes 8 removals in the storehouse.

In a conventional unconnected state, the locking hole 16 is aligned with the locking block 3, and the locking block 3 extends into the locking hole 16, so that the sleeving of the fixing ring 2 is not influenced; the plunger body 12 blocks the liquid channel 18, the rack 6 is positioned at one end blocking the diversion hole 5, and liquid cannot pass through; the housing is mounted on the container to be filled via a flange connection 9. During connection, the fixing ring 2 is sleeved on the tank car connector, the position of the locking block 3 is aligned to a groove on the tank car connector, the locking handle is rotated by 14-90 degrees, the locking ring 1 and the locking block 3 are staggered, the locking block 3 is pressed into the groove of the tank car connector on the inner side of the locking ring 1 to complete connection, meanwhile, the steel ball positioning groove in the locking ring 1 is aligned to the steel ball 13 on the outer side of the fixing ring 2, and the steel ball 13 is pressed into the steel ball positioning groove to limit the locking ring 1. The hand wheel 17 is rotated, the gear 10 drives the rack 6 to slide in the rack groove 7, the rack 6 slides to the other end of the rack groove 7, the diversion hole 5 is communicated, a small amount of liquid flows into the movable bin 8 through the diversion hole 5, the pressure of one side of the container and one side of the tank car begins to be balanced, the hand wheel 17 continues to be rotated, the rack 6 supports against the movable bin 8 and drives the movable bin 8 to move together, the plunger body 12 is pulled out outwards, due to the pressure balance of the two sides, the plunger body 12 is pulled out easily, the liquid channel 18 is opened, and filling is started. After the filling, rotate hand wheel 17, rack 6 blocks up the water conservancy diversion hole 5 earlier after, drive and remove storehouse 8 and move to the opposite direction, plunger body 12 is pushed the fluid passage, block up fluid passage 18, after hard reverse rotation locking handle 14, make steel ball 13 deviate from in the steel ball constant head tank, rotatory locking ring 1 to initial position, locking hole 16 aligns with latch segment 3, latch segment 3 is no longer oppressed, can latch 16 internalization in the hole again, no longer influence solid fixed ring 2, directly take off solid fixed ring 2 and can accomplish the dismantlement.

Meanwhile, in an unconnected state, the position of the locking handle 14 can be matched with the position of a ball valve handle on a tank car joint, and when the locking handle is not locked, the locking handle 14 influences the rotation of the ball valve handle, so that the ball valve cannot be opened when the locking handle is not locked, and the locking device is safer.

Claims

1. The liquefied gas quick connector is characterized by comprising a connecting part and a flow guide part, wherein the inside of the connecting part is communicated with the inside of the flow guide part through a liquid channel;

the connecting portion include locking ring and solid fixed ring, the locking ring can be rotatory around solid fixed ring's center, and solid fixed ring is gone up the activity and is equipped with a plurality of latch segments, the latch segment can be to solid fixed ring axle center motion, is equipped with a plurality of locking holes on the solid fixed ring, latch segment one end stretches into in the locking hole, latch segment and locking ring swing joint.

2. The rapid liquefied gas coupling as claimed in claim 1, wherein the fixing ring further comprises steel balls, and the locking ring further comprises steel ball positioning grooves at corresponding positions.

3. The quick connector for liquefied gas as claimed in claim 1, wherein the portion of the locking block extending into the locking hole is provided with an inclined surface, and the locking hole is provided with a corresponding inclined surface.

4. The liquefied gas quick coupling according to claim 1, wherein a locking handle is attached to an outer side of the locking ring.

5. The quick connector for liquefied gas according to claim 1, wherein the plunger comprises a plunger body, one end of the plunger body is engaged with the liquid passage, the other end of the plunger body is provided with a moving device, the moving device comprises a moving chamber, the moving chamber is movably engaged with the inside of the moving part, a rack groove is formed in the moving chamber, a rack is movably arranged in the rack groove, and a gear is cooperatively arranged on the rack.

6. The quick connector for liquefied gas as claimed in claim 5, wherein a guiding hole is formed in the plunger body, one end of the guiding hole is connected to the liquid channel, and the other end of the guiding hole is connected to the mobile cabin.

7. The liquefied gas quick coupling as claimed in claim 6, wherein the pilot hole is engaged with the rack.

8. The liquefied gas quick coupling as claimed in claim 5 or 7, wherein the rack slot has a length greater than the rack length.

9. The liquefied gas quick coupling as claimed in claim 5, further comprising a hand wheel, wherein an axis of the hand wheel extends into the flow guiding portion to be engaged with the gear.