CN215111188U - Filling valve for filling liquefied gas - Google Patents

Abstract

The application discloses a filling valve for filling liquefied gas, which comprises a filling female head and a filling male head which can be inserted into the filling female head for filling; the filling female head is internally provided with a first filling channel, and the filling female head is internally provided with a free sealing member for closing the first filling channel and a resetting member for resetting the free sealing member; the filling male head is internally provided with a second filling channel, and one end of the filling male head inserted into the filling female head is provided with a thrust part used for pushing away the free sealing piece to enable the first filling channel and the second filling channel to be communicated. This application has reached and will fill in the dress male head inserts and fill in the female head, makes thrust portion push away can fill the purpose of dress after free sealing member to realized simplifying and filled the artifical operation of dress in-process, improved and connect and fill dress speed, also convenient to detach's technological effect simultaneously, and then solved and adopted to fill the dress valve and need artifical too much operation among the correlation technique, connection speed is slow, the comparatively loaded down with trivial details problem of dismouting.

Description

Filling valve for filling liquefied gas

Technical Field

The application relates to liquefied gas fills technical field, specifically relates to a fill dress valve for liquefied gas fills.

Background

The liquefied gas refers to liquid oxygen, liquid nitrogen, liquid argon, liquefied natural gas and other gases. Liquefied gas is flammable and explosive, and needs a special storage vessel, namely a liquefied gas tank, for storage. After the liquefied gas in the tank body is used, the tank body needs to be refilled. The joint that current setting between liquefied gas jar and filling equipment is generally connected through screw thread and nut cooperation, or adopts the ball valve of screw thread, stop valve etc. all need artifical too much operation, and the connection speed is slow, and the dismouting is comparatively loaded down with trivial details.

Aiming at the problems that excessive manual operation is needed when a filling valve is adopted in the related technology, the connection speed is low, and the disassembly and the assembly are relatively complex, an effective solution is not provided at present.

SUMMERY OF THE UTILITY MODEL

The main aim at of this application provides a fill dress valve for liquefied gas fills to adopt to fill the dress valve and need artifical too much operation among the solution correlation technique, connection speed is slow, the comparatively loaded down with trivial details problem of dismouting.

In order to achieve the above object, the present application provides a filling valve for liquefied gas filling, comprising a filling female head and a filling male head insertable into the filling female head for filling; the filling female head is internally provided with a first filling channel, and the filling female head is internally provided with a free sealing member for closing the first filling channel and a resetting member for resetting the free sealing member; the filling male head is internally provided with a second filling channel, and one end of the filling male head inserted into the filling female head is provided with a thrust part used for pushing away the free sealing piece to enable the first filling channel and the second filling channel to be communicated.

Furthermore, the thrust part is provided with a filling hole for communicating the first filling channel and the second filling channel.

Furthermore, it is used for inserting to fill to be provided with in the female head fill the male chamber of filling, it is provided with a plurality of seal assembly to insert the intracavity, fill the male head and extend into it establishes to insert the chamber back cover in the seal assembly.

Furthermore, the sealing assembly comprises a primary sealing element and a secondary sealing element which are arranged along the axial direction of the filling female head, and a primary step sealing surface and a secondary step sealing surface which are used for fixing the primary sealing element and the secondary sealing element are respectively arranged in the insertion cavity along the axial direction of the insertion cavity; the filling male head extends into the insertion cavity and then is sleeved in the primary sealing element and the secondary sealing element.

Further, a primary seal is disposed proximate the free seal, the primary seal having a diameter less than a diameter of the secondary seal.

Further, the primary sealing element comprises at least two primary sealing rings which are fixed on the primary step sealing surface side by side, and the secondary sealing element comprises at least one secondary sealing ring which is fixed on the secondary step sealing surface.

Further, the first filling channel comprises a filling part and a sealing part, the sealing part is communicated with the insertion cavity, and the sealing part is arranged in a horn mouth shape;

the diameter of the free seal is smaller than the inner diameter of the filling part, the first end of the free seal is positioned at the filling part, and the second end of the free seal is positioned at the sealing part;

a second end of the free seal member is configured as an arcuate sealing surface in sealing engagement with the interior profile of the seal portion;

the thrust portion of the charging male head is adapted to urge the arcuate sealing surface of the freed seal to move the freed seal axially within the charging portion.

Furthermore, a sealing sleeve matched with the inner contour of the sealing part is arranged in the sealing part, and the second end of the free sealing part is arranged in the sealing sleeve in a sealing mode.

Further, the piece that resets sets up to reset spring, reset spring's first end is fixed fill the portion and keep away from the one end of free sealing member, the second end the one end fixed connection of sealing portion is kept away from to free sealing member.

Further, the return spring is set to be a tower-shaped spring, and the small-diameter end of the return spring is fixedly connected with the free sealing piece.

Furthermore, a locking spring and a locking sleeve are sleeved on the filling female head, and the locking sleeve can move along the axial direction of the filling female head and compress the locking spring;

the locking sleeve is characterized in that a locking ball is arranged on the inner side of the locking sleeve, and a locking groove matched with the locking ball is formed in the filling male head.

In the embodiment of the application, the filling female head and the filling male head which can be inserted into the filling female head for filling are arranged; the filling female head is internally provided with a first filling channel, and the filling female head is internally provided with a free sealing member for closing the first filling channel and a resetting member for resetting the free sealing member; the filling male head is internally provided with a second filling channel, one end of the filling male head inserted into the filling female head is provided with a thrust part for pushing away the free sealing element to enable the first filling channel and the second filling channel to be communicated, and the aim of filling the filling head by inserting the filling male head into the filling female head and enabling the thrust part to push away the free sealing element is achieved, so that the manual operation in the filling process is simplified, the connecting and filling speed is improved, and meanwhile, the technical effect of convenience in disassembly is achieved, and the problems that excessive manual operation is needed when a filling valve is adopted in the related technology, the connecting speed is low, and the disassembly and assembly are complicated are solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a schematic structural diagram according to an embodiment of the present application;

wherein, 1 fills female head, 2 first filling passageway, 21 filling portion, 22 sealing, 3 piece that resets, 4 free seals, 5 second filling passageways, 6 fills public head, 61 thrust portion, 62 filling holes, 7 insert chamber, 8 primary seal, 9 secondary seal, 10 locking spring, 11 locking cover, 12 locking ball.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used.

In this application, the terms "upper", "lower", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "disposed," "provided," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1, the present embodiment provides a filling valve for liquefied gas filling, which includes a filling female head 1 and a filling male head 6 insertable into the filling female head 1 for filling; wherein, a first filling channel 2 is arranged in the filling female head 1, a free sealing member 4 for closing the first filling channel 2 and a resetting member 3 for resetting the free sealing member 4 are arranged in the filling female head 1; the filling male head 6 has a second filling passage 5 therein, and the end of the filling male head 6 inserted into the filling female head 1 has a thrust portion 61 for pushing open the free seal 4 to communicate the first filling passage 2 and the second filling passage 5.

In this embodiment, the filling female head 1 is intended to be mounted on a container to be filled, such as a liquid oxygen storage tank, a storage bottle, or the like, and the filling male head 6 is intended to be mounted on a filling device, and the filling male head 6 on the filling device is inserted into the filling female head 1 during filling to fill liquefied gas. Specifically, a first filling channel 2 is arranged in the filling female head 1, and a reset piece 3 and a free sealing piece 4 are arranged in the first filling channel 2, wherein the reset piece 3 is used for providing pushing force for the free sealing piece 4 to enable the free sealing piece 4 to be in a position for closing the first filling channel 2. The first filling channel 2 can be closed under the thrust of the resetting member 3 so that, when the filling male head 6 is not inserted into the filling female head 1, the first filling channel 2 is in a closed state and liquefied gas in the container to be filled cannot be discharged from the first filling channel 2.

A second filling channel 5 which can be communicated with the first filling channel 2 is arranged in the filling male head 6, and when the filling male head 6 is inserted into the filling female head 1, the first filling channel 2 and the second filling channel 5 are coaxially arranged. When the filling male head 6 is fully inserted into the filling female head 1, the thrust part 61 at the end of the filling male head 6 overcomes the thrust of the reset piece 3 on the free sealing piece 4, and pushes the free sealing piece 4 away from the position closing the first filling channel 2, so that the first filling channel 2 and the second filling channel 5 are communicated, thereby opening the filling path, and then the filling of liquefied gas can be realized after the filling device is opened.

With filling among the correlation technique fill the valve and adopt screw thread and nut, perhaps adopt the ball valve of screw thread, the stop valve realizes filling the dress and say, filling in this application does not rely on the screw thread, simplifies and fills the artifical operation of dress in-process, improves and connects and fill dress speed, also convenient to detach simultaneously, can pull out fast and insert, has improved greatly and has filled dress efficiency, has solved and has adopted to fill the dress valve and need artifical too much operation among the correlation technique, and connection speed is slow, the comparatively loaded down with trivial details problem of dismouting.

When the filling valve is used for filling low-temperature liquefied gas, such as liquid oxygen, the filling valve is required to have low-temperature resistance, otherwise frost can occur due to the low-temperature property of the liquid oxygen after long-time use, so that the filling valve is inconvenient to use and has high failure rate. Therefore, for low temperature environment, the moving parts (the reset part 3 and the free sealing part 4) in the filling valve need to have excellent performance under low temperature condition, and can be made of low temperature resistant materials, such as poly-trifluoro, poly-tetrafluoro and other high molecular materials which can resist ultra low temperature.

In order to facilitate the smooth filling process, the thrust portion 61 is provided with a filling hole 62 for communicating the first filling passage 2 and the second filling passage 5, in this embodiment, the thrust portion 61 and the filling male head 6 are of an integral structure, which is a cylindrical portion at the end of the filling male head 6, when the thrust portion 61 pushes away the free seal 4, the thrust portion 61 is located in the first filling passage 2, the diameter of the thrust portion 61 is smaller than the inner diameter of the first filling passage 2, so that the filling hole 62 opened at the ring side of the thrust portion 61 can communicate the first filling passage 2 with the second filling passage 5, and the liquefied gas also enters the first filling passage 2 through the filling hole 62.

As shown in fig. 1, an insertion cavity 7 for inserting the filling male head 6 is provided in the filling female head 1, a plurality of sealing assemblies are provided in the insertion cavity 7, and the filling male head 6 is sleeved in the sealing assemblies after extending into the insertion cavity 7.

Specifically, it should be noted that the filling process of the liquefied gas is pressurized filling, and therefore the filling valve needs to have good sealing performance to prevent the liquefied gas from overflowing, in this embodiment, by installing a plurality of sealing assemblies in the insertion cavity 7 of the filling female head 1, a multi-stage seal is formed between the filling male head 6 and the sealing assemblies after extending into the insertion cavity 7, and the sealing performance of the filling valve is improved.

As shown in fig. 1, the sealing assembly comprises a primary sealing member 8 and a secondary sealing member 9 which are arranged along the axial direction of the filling female head 1, and a primary step sealing surface and a secondary step sealing surface for fixing the primary sealing member 8 and the secondary sealing member 9 are respectively arranged in the insertion cavity 7 along the axial direction thereof; the filling male head 6 extends into the insertion cavity 7 and then is sleeved in the primary sealing element 8 and the secondary sealing element 9.

Specifically, it should be noted that, generally, a sealing groove or a stepped sealing surface is required for mounting the sealing element, in this embodiment, a primary stepped sealing surface and a secondary stepped sealing surface are provided in the insertion cavity 7 to respectively mount the primary sealing element 8 and the secondary sealing element 9, so as to ensure the stability of the mounting and use of the sealing elements, and the primary sealing element 8 and the secondary sealing element 9 may be fixed by using a sealant. The primary seal member 8 is disposed proximate to the free seal member 4, the diameter of the primary seal member 8 being less than the diameter of the secondary seal member 9, the location proximate to the free seal member 4 being more proximate to the container to be filled, requiring its sealing area to be smaller as a first seal configuration, thus making the primary seal member 8 less than the secondary seal member 9, thereby providing a stable seal configuration. Similarly, the diameter of the part of the filling male head 6 inserted into the primary sealing member 8 is smaller than that of the part inserted into the secondary sealing member 9, i.e. the outer surface of the filling male head 6 is also in a stepped arrangement.

As shown in fig. 1, since the sealing area of the primary sealing member 8 is smaller, and sealing is easier to achieve, in order to improve sealing performance, the primary sealing member 8 includes at least two primary sealing rings fixed side by side on the primary stepped sealing surface, and the secondary sealing member 9 includes at least one secondary sealing ring fixed on the secondary stepped sealing surface. The first-stage sealing ring and the second-stage sealing ring are both made of low-temperature-resistant materials.

As shown in fig. 1, the first filling channel 2 is mainly composed of a filling portion 21 and a sealing portion 22, the filling portion 21 is a straight line segment, the sealing portion 22 is communicated with the insertion cavity 7, and in order to facilitate the sealing of the free seal 4 in the sealing portion 22, the sealing portion 22 is arranged in a flared shape, so that the inner diameter of the sealing portion 22 is gradually reduced; the diameter of the dissociative sealing element 4 is smaller than the inner diameter of the filling part 21, the first end of the dissociative sealing element 4 is positioned at the filling part 21, the second end is positioned at the sealing part 22, and the dissociative sealing element 4 can be arranged in an oval shape as a whole; the second end of the free sealing element 4 is an arc-shaped sealing surface which is in sealing fit with the inner contour of the sealing part 22, so that the free sealing element can be tightly attached to the sealing part 22 in a horn shape, and good sealing is realized under the thrust action of the resetting element 3; the thrust portion 61 of the filling male 6 is used to push the arc-shaped sealing surface of the free seal 4 so that the free seal 4 moves axially within the filling portion 21. When the filling male head 6 is inserted into the filling female head 1, the thrust portion 61 comes into contact with the arc-shaped sealing surface of the free seal 4, thereby pushing the free seal 4 away from the sealing portion 22 and achieving communication between the first filling passage 2 and the second filling passage 5.

In order to further improve the sealing performance of the free sealing element 4 in the sealing part 22, a sealing sleeve matched with the inner contour of the sealing part 22 is arranged in the sealing part 22, the second end of the free sealing element 4 is sealed in the sealing sleeve, and the sealing sleeve is made of rubber materials and has a certain deformation amount, so that the sealing performance can be improved.

As shown in fig. 1, the reset element 3 is configured as a reset spring, a first end of the reset spring is fixed at an end of the filling portion 21 away from the free seal, and a second end of the reset spring is fixedly connected at an end of the free seal away from the sealing portion 22.

Specifically, it should be noted that, adopt reset spring as the piece 3 that resets of dissociating sealing member 4, have the advantage that use stable small, for the centering of dissociating sealing member 4, reset spring sets up to tower spring, reset spring's minor diameter end and dissociating sealing member fixed connection for being convenient for. More specifically, the first filling channel 2, the second filling channel 5, the return spring and the free sealing member 4 are all arranged coaxially, so that the free sealing member 4 is convenient to seal with the sealing part 22 in a centering manner when being reset, and the sealing performance is improved.

As shown in fig. 1, a locking spring 10 and a locking sleeve 11 are sleeved on the filling female head 1, and the locking sleeve 11 can move along the axial direction of the filling female head 1 and compress the locking spring 10;

the locking sleeve 11 is provided with a locking ball 12 on the inner side, and the filling male head 6 is provided with a locking groove matched with the locking ball 12.

Specifically, it should be noted that, because liquefied gas is filled under pressure, the filling male head 6 needs to be abutted against the filling female head 1 during filling, in this embodiment, self-locking of the filling male head 6 after inserting into the filling female head 1 is achieved by the locking spring 10, the locking sleeve 11, and the locking ball 12, specifically, before the filling male head 6 is inserted into the filling female head 1, the locking sleeve 11 is pushed in the axial direction of the filling female head 1 to compress the locking spring 10 to obtain elastic potential energy, the locking ball 12 on the locking sleeve 11 is driven to move synchronously and to leave the installation position, at this time, the filling male head 6 is inserted into the filling female head 1 to the filling position, then the locking sleeve 11 is released, the locking sleeve 11 is pushed to reset under the action of the locking spring 10 and drives the locking ball 12 to move to the locking groove on the filling male head 6, at this time, the locking ball 12 is stuck in the locking groove, and the filling male head 6 can be locked in the filling female head 1, realize self-locking function for it is more convenient and swift when filling. When the filling male head 6 needs to be disassembled, the locking sleeve 11 is pushed to drive the locking ball 12 to be separated from the locking groove.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A filling valve for filling liquefied gas is characterized by comprising a filling female head and a filling male head which can be inserted into the filling female head for filling; wherein,

the filling female head is internally provided with a first filling channel, and the filling female head is internally provided with a free sealing member for closing the first filling channel and a resetting member for resetting the free sealing member;

the filling male head is internally provided with a second filling channel, and one end of the filling male head inserted into the filling female head is provided with a thrust part for pushing away the free sealing element to enable the first filling channel and the second filling channel to be communicated.

2. The filling valve for liquefied gas filling of claim 1, wherein the thrust portion has a filling hole opened therein for communicating the first filling passage and the second filling passage.

3. The filling valve for liquefied gas filling of claim 2, wherein an insertion cavity for inserting the filling male head is provided in the filling female head, a plurality of sealing assemblies are provided in the insertion cavity, and the filling male head extends into the insertion cavity and then is sleeved in the sealing assemblies.

4. The filling valve for liquefied gas filling according to claim 3, wherein the seal assembly includes a primary seal and a secondary seal disposed axially along the filling female head, the insertion chamber having disposed axially therein a primary step seal surface and a secondary step seal surface for securing the primary seal and the secondary seal, respectively;

the filling male head extends into the insertion cavity and then is sleeved in the primary sealing element and the secondary sealing element.

5. The filling valve for liquefied gas filling of claim 4, wherein the primary seal comprises at least two primary seal rings secured side-by-side on the primary step sealing surface and the secondary seal comprises at least one secondary seal ring secured on the secondary step sealing surface.

6. The filling valve for liquefied gas filling according to any one of claims 3 to 5, wherein the first filling passage includes a filling portion and a sealing portion, the sealing portion communicating with the insertion chamber, the sealing portion being disposed in a flared shape;

the free seal has a diameter less than the inner diameter of the charging portion, a first end of the free seal being located in the charging portion and a second end of the free seal being located in the sealing portion;

a second end of the free seal member is configured as an arcuate sealing surface in sealing engagement with the interior profile of the seal portion;

the thrust portion of the charging male is adapted to urge the arcuate sealing surface of the freed seal to move the freed seal axially within the charging portion.

7. The filling valve for liquefied gas filling of claim 6, wherein a sealing sleeve is disposed within the sealing portion that matches its inner profile, and the second end of the free seal is sealingly disposed within the sealing sleeve.

8. The filling valve for liquefied gas filling according to claim 7, wherein the return member is provided as a return spring, a first end of the return spring being fixed to an end of the filling portion remote from the free seal, and a second end of the return spring being fixedly connected to an end of the free seal remote from the sealing portion.

9. The filling valve for liquefied gas filling of claim 8, wherein the return spring is provided as a tower spring having a small diameter end fixedly connected to the free seal.

10. The filling valve for liquefied gas filling according to any one of claims 7 to 9, wherein a locking spring and a locking sleeve are sleeved on the filling female head, and the locking sleeve can move in the axial direction of the filling female head and compress the locking spring;

the locking sleeve is characterized in that a locking ball is arranged on the inner side of the locking sleeve, and a locking groove matched with the locking ball is formed in the filling male head.

Images