CN211525794U - Dry type quick joint for loading and unloading liquefied hydrocarbon tank car - Google Patents

Abstract

The utility model discloses a dry-type quick-operation joint of liquefied hydrocarbon tank wagon loading and unloading usefulness, include: the main head part is fixedly arranged with a loading arm of liquefied hydrocarbon, and a valve core assembly and a joint connection actuating mechanism are arranged in the main head part; the male head part is fixedly connected with the tank car and is provided with a check valve umbrella; the connector connection actuating mechanism realizes connection and locking through concave-convex matching between the female head part and the male head part; in the liquefied hydrocarbon filling process, the valve core assembly and the check valve umbrella are opposite to each other to realize valve conduction; at the end of the liquefied hydrocarbon filling or when the joint connection actuator is accidentally unlocked, the check valve umbrella is closed under the action of the reverse spring. The utility model discloses an operation female first case subassembly makes public first inside spring compress passively, has improved spring life.

Description

Dry type quick joint for loading and unloading liquefied hydrocarbon tank car

Technical Field

The utility model relates to a fuel filling equipment field, in particular to dry-type quick-operation joint of loading and unloading usefulness of liquefied hydrocarbon tank wagon.

Background

The existing liquefied hydrocarbon loading and unloading operation realizes the airtight connection between the loading arm and the tank car through the quick coupling, and the connection reliability of the quick coupling is related to the overall safety of the liquefied hydrocarbon loading and unloading operation. The fast joint falls off to cause leakage and explosion when the Shandong has the Yiyi Jinyu petrochemical liquefied hydrocarbon is unloaded, and 10 people die and 9 people are seriously injured. In the process of loading and unloading operation of the wrench type quick connector, once falling off occurs, liquefied hydrocarbon is rapidly gasified to form an explosion space, and a leakage source cannot be effectively cut off. In order to avoid leakage accidents during liquefied hydrocarbon loading and unloading operation and avoid accidents such as fire explosion, personal injury and the like, a safe quick connector for loading and unloading a liquefied hydrocarbon tank car is needed to ensure long-period safe operation of the loading and unloading operation.

CN205781568U discloses a dry quick coupling, which is composed of a female valve body and a male valve body which are connected by a screw, wherein the outer surface of the male valve body is provided with a screw thread, the end of the female valve body is provided with a knock pin matched with the screw thread, a valve clack is arranged in a valve cavity of the male valve body through a support, one end of the valve clack is in sealing fit with one end of the valve cavity of the male valve body, the other end of the valve clack is provided with a guide rod matched with a guide hole on the support, and a spring is arranged on the guide rod between.

CN109386679A discloses a safe quick-operation joint for liquefied hydrocarbon tank wagon loading and unloading, which mainly solves the problems of easy falling off, easy leakage, incapability of realizing quick cut-off and poor safety in the prior art. Including public head and female first two parts, female head passes through flange fixed mounting on the tank wagon with the tank wagon, female head afterbody passes through circular cone taper pipe screw thread fixed mounting at liquefied hydrocarbon oil filling riser front end, public first outside circumference equipartition spiral groove sets up spacing draw-in groove, built-in stop valve, quick-operation joint female head configuration locking mechanical system, and set up the gyro wheel at the head, the middle section sets up the ball groove, the afterbody sets up the hand wheel, the inside circumference of female head sets up the ball groove, be connected with public head through the ball, built-in stop valve, this quick-operation joint can be arranged in the loading and unloading of liquefied hydrocarbon tank wagon.

CN207729106U discloses a hydraulic quick coupling for loading and unloading liquefied hydrocarbon, including public first part and female first part, public first part includes public head, public first inner tube and draw-in groove, and female first part includes female head, locking dog, restraint spring, female first inner tube, sealing washer, and the locking dog is located female first part inside, the female first inner tube outside, links to each other with the restraint spring, is the sealing washer outside the female first inner tube mouth, and the sealing washer is established and can be used to the liquefied hydrocarbon loading and unloading in-process between the restraint spring.

Above prior art scheme leads to the structure comparatively complicated through screw-thread fit or operates inconveniently, or though can guarantee the reliability of joint, nevertheless to the requirement of spring higher.

Therefore, a quick coupling is needed to prevent the leakage of the male and female members after the male and female members are accidentally dropped, and to effectively prolong the service life of the spring.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a dry-type quick-operation joint of liquefied hydrocarbon tank wagon loading and unloading usefulness makes public first inside spring compress passively through operation female first case subassembly, has improved spring life.

To achieve the above object, according to a first aspect of the present invention, there is provided a dry quick coupling for loading and unloading a liquefied hydrocarbon tank car, comprising: the main head part is fixedly arranged with a loading arm of liquefied hydrocarbon, and a valve core assembly and a joint connection actuating mechanism are arranged in the main head part; the male head part is fixedly connected with the tank car and is provided with a check valve umbrella; the connector connection actuating mechanism realizes connection and locking through concave-convex matching between the female head part and the male head part; in the liquefied hydrocarbon filling process, the valve core assembly and the check valve umbrella are opposite to each other to realize valve conduction; at the end of the liquefied hydrocarbon filling or when the joint connection actuator is accidentally unlocked, the check valve umbrella is closed under the action of the reverse spring.

Further, in the above technical solution, the connector connection actuating mechanism may be a cam wrench, and the cam wrench engages the cam portion of the female member with the annular groove of the male member.

Furthermore, in the above technical scheme, the number of the cam spanner handles can be two, and the two cam spanner handles can be positioned at the front end of the female head part and are symmetrically arranged.

Further, in the above technical solution, the valve core assembly may specifically include: the female valve umbrella is positioned at the front end of the valve core assembly and is butted with the check valve umbrella of the male valve in the liquefied hydrocarbon filling process; and the valve rod is positioned at the rear end of the female valve umbrella, one end of the valve rod is connected with the female valve umbrella, and the other end of the valve rod is connected with the valve conduction actuating mechanism.

Further, among the above-mentioned technical scheme, valve switch-on actuating mechanism can include the handle, and this handle and valve rod transmission are connected for drive female head valve umbrella antedisplacement.

Furthermore, in the above technical solution, the female member may be fixedly mounted at the front end of the loading arm of the liquefied hydrocarbon by a taper pipe thread.

Further, in the above technical scheme, the male part can be connected with the feed inlet of the tank car through a flange.

Further, among the above-mentioned technical scheme, the rear end of flange can connect the ultrashort ball valve, and this ultrashort ball valve is used for closing the tank wagon feed inlet after liquefied hydrocarbon fills the completion.

Further, in the above technical scheme, the male head part may be provided with a bypass valve for discharging liquid in the pipe after the completion of filling the liquefied hydrocarbon and the cutting off of the ultra-short ball valve.

Further, in the above technical scheme, the reverse spring is abutted against the rear end of the check valve umbrella.

Compared with the prior art, the utility model discloses following beneficial effect has:

1) by applying the quick connector of the utility model, when the male and female connectors are unlocked (i.e. separated) accidentally due to an accident, the check valve umbrella can be closed immediately under the action of the reverse spring, so that accidental leakage can be effectively avoided;

2) the male head component and the female head component can be connected more simply and more quickly on the premise of ensuring safety and reliability by the concave-convex matching connection mode of the annular groove on the male head and the cam part on the female head;

3) the utility model discloses a dry-type quick-operation joint for loading and unloading of liquefied hydrocarbon tank wagon adopts the case subassembly structure in the female head part, makes the spring of public head inside compress passively through the case subassembly of operation female head, can effectively improve spring life;

4) the utility model discloses a handle, valve rod and female head valve umbrella's transmission mode for the transmission is more reliable and more stable.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood and to make the technical means more comprehensible, and to make the above and other objects, technical features, and advantages of the present invention easier to understand, one or more preferred embodiments are listed below, and the following detailed description is given with reference to the accompanying drawings.

Drawings

Fig. 1 is an exploded view of the internal structure of a dry quick coupling for loading and unloading a liquefied hydrocarbon tank car according to the present invention.

Description of the main reference numerals:

1-female head part, 11-female head valve umbrella, 12-valve rod, 13-cam spanner, 130-cam part, 14-handle;

2-male part, 21-reverse spring, 22-check valve umbrella, 23-annular groove.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

Spatially relative terms, such as "below," "lower," "upper," "above," "upper," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the object in use or operation in addition to the orientation depicted in the figures. For example, if the items in the figures are turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the elements or features. Thus, the exemplary term "below" can encompass both an orientation of below and above. The article may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative terms used herein should be interpreted accordingly.

In this document, the terms "first", "second", etc. are used to distinguish two different elements or portions, and are not used to define a particular position or relative relationship. In other words, the terms "first," "second," and the like may also be interchanged with one another in some embodiments.

Example 1

As shown in fig. 1, the dry quick coupling for loading and unloading a liquefied hydrocarbon tank car of the present invention is mainly composed of a female member 1 and a male member 2 which can be butted against each other. The female part 1 is fixedly mounted to the liquefied hydrocarbon loading arm, preferably, but not limitatively, the female part 1 may be fixedly mounted to the front end of the liquefied hydrocarbon loading arm by means of a conical taper (the loading arm is not shown in the figure). The female head part is internally provided with a valve core assembly and a joint connection actuating mechanism, and the joint connection actuating mechanism is used for executing the stable connection of the female head part 1 and the male head part 2. The male part 2 is fixedly connected to a tank wagon (the tank wagon is not shown in the figure), and preferably, but not limitatively, the male part 2 can be connected to a tank wagon feed port through a flange. The male part 2 is provided with a check valve umbrella 22. The joint connection actuating mechanism realizes connection and locking through concave-convex matching between the female head part 1 and the male head part 2. In the normal filling process of liquefied hydrocarbon, the valve core assembly of the female head part 1 and the check valve umbrella of the male head part 2 are opposite to each other to realize valve conduction; after normal filling of liquefied hydrocarbon is finished, the joint connection actuating mechanism is manually opened and unlocked, and the check valve umbrella 22 is normally closed under the action of the reverse spring 21. When the joint connection actuating mechanism is unlocked accidentally due to an accident, the check valve umbrella 22 can be closed immediately under the action of the reverse spring 21 (the reverse spring abuts against the rear end of the check valve umbrella), so that accidental leakage is avoided.

Example 2

Further, in one or more exemplary embodiments of the present invention, a cam trigger 13 may be used for the joint connection actuator in embodiment 1. The cam portion 130 of the female member 1 is engaged with the annular groove 23 of the male member 2 by actuating the cam handle 13. Therefore, the female head part 1 and the male head part 2 are matched in a concave-convex mode to realize connection and locking. Preferably, but not limitatively, the number of the cam wrenches 13 may be two, and two cam wrenches 13 are located at the front end of the female member 1 and are symmetrically arranged. The concave-convex matched connection mode can ensure that the male head part 2 and the female head part 1 are connected more simply and more quickly on the premise of ensuring safety and reliability.

Example 3

Further, in one or more exemplary embodiments of the present invention, the valve core assembly of the female component 1 in example 1 may specifically include: a female valve umbrella 11 and a valve rod 12, as shown in fig. 1, the female valve umbrella 11 is located at the front end of the valve core assembly, during the liquefied hydrocarbon filling process, the female valve umbrella 11 is opposite to the check valve umbrella 22 of the male part 1, i.e. the female valve umbrella 11 is moved forward and pressed on the check valve umbrella 22, so that the check valve umbrella 22 overcomes the pressure of the reverse spring 21 and moves backward, thereby conducting the pipeline. The valve rod 12 is located at the rear end of the female valve umbrella 11, one end of the valve rod 12 is connected with the female valve umbrella 11, the other end of the valve rod 12 is connected with a valve conducting executing mechanism, and the valve conducting executing mechanism can conduct force to the female valve umbrella 11 through the valve rod 12 to enable the female valve umbrella 11 to move forwards.

Example 4

Further, in one or more exemplary embodiments of the present invention, the valve conducting actuator according to embodiment 3 may include a handle 14, the handle 14 is in transmission connection with the valve rod 12, and any transmission manner in the mechanical field may be adopted, for example, the handle 14 drives a cam shaft, one end of the valve rod 12 is hinged to the cam shaft, and the other end is hinged to the female valve umbrella 11, so that the female valve umbrella 11 is driven to move forward by the rotation of the cam shaft. The transmission mode of the handle 14, the valve rod 12 and the female valve umbrella 11 is adopted, so that the transmission is more stable and reliable.

Example 5

Further, in one or more exemplary embodiments of the present invention, the male member 2 is connected to the tank car feed port through a flange on the basis of any one of embodiments 1 to 4. The rear end of the flange can be connected with an ultra-short ball valve (not shown in the figure), and the ultra-short ball valve is used for closing the feed port of the tank car after the liquefied hydrocarbon is filled. Further, a bypass valve (not shown) may be provided on the male member 2, and the bypass valve may be used to close off the discharge of liquid in the pipe after the filling of liquefied hydrocarbon is completed and the ultra-short ball valve is closed.

The utility model discloses a dry-type quick-operation joint comprises male joint part 2 and female joint part 1 two parts. The male part 2 and the tank wagon are fixedly arranged on the tank wagon through flanges, and the female part 1 is fixedly arranged at the front end of the liquefied hydrocarbon filling riser through conical pipe threads. The front end of the male head component 2 is provided with an annular groove 23, the front end of the female head component 1 is symmetrically provided with two cam wrenches 13, and after the male head and the female head are connected, the cam part 130 at the rear end of the cam wrenches 13 of the female head component is clamped into the annular groove 23 of the male head component, so that the effective connection of the male head and the female head is realized. The valve core assembly is arranged in the female head part, after the male head and the female head are connected, the handle 14 is rotated manually to drive the valve rod 12 to move, so that the female head valve umbrella 11 moves forwards, and after the female head valve umbrella 11 is contacted with the check valve umbrella 22 of the male head, the valve umbrellas at the two ends are butted to a pipeline to provide a pipeline liquid (namely liquefied hydrocarbon) circulation passage. This dry-type quick-operation joint for loading and unloading of liquefied hydrocarbon tank wagon utilizes the case subassembly of female first part to realize that the inside runner is opened and close, has reduced the inefficacy risk of spring compression structure, can effectively improve quick-operation joint's life.

When liquefied hydrocarbon fills the dress and finishes needs the separation the utility model discloses a during quick-operation joint, reverse rotation handle 14 realizes the valve umbrella of female head part and the separation of the check valve umbrella of public head part, and both ends medium is sealed up and is deposited at valve umbrella rear end this moment, opens cam spanner 13 and separates public female head. Under unexpected working conditions, for example, under the condition that the quick connector is damaged by external force and the male and female heads are abnormally dropped, the check valve umbrella 22 at the male end can realize automatic reset under the action of the reverse spring 21, the circulation channel can be closed without manual intervention, and the leakage of the conveying medium is effectively prevented. The utility model discloses an adopt case subassembly structure in liquefied hydrocarbon tank wagon loading and unloading dry-type quick-operation joint's female head part, make the inside spring of public head compress passively through the case subassembly of the female head of operation, improved spring life. Once the male head and the female head are separated accidentally, the check valve umbrella can reset automatically, and the leakage source is cut off at the first time.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. Any simple modifications, equivalent changes and modifications made to the above exemplary embodiments shall fall within the scope of the present invention.

Claims (10)

1. A dry quick connector for loading and unloading a liquefied hydrocarbon tank car, comprising:

the female head part is fixedly arranged with the loading arm of the liquefied hydrocarbon, and a valve core assembly and a joint connection actuating mechanism are arranged in the female head part;

the male head part is fixedly connected with the tank wagon and is provided with a check valve umbrella;

the joint connection actuating mechanism realizes connection and locking through concave-convex matching between the female head part and the male head part; in the liquefied hydrocarbon filling process, the valve core assembly and the check valve umbrella are opposite to each other to realize valve conduction; at the end of the liquefied hydrocarbon filling or when the joint connection actuator is accidentally unlocked, the check valve umbrella is closed under the action of the reverse spring.

2. The dry quick connector for loading and unloading a liquefied hydrocarbon tank car according to claim 1, wherein the connector connection actuator is a cam wrench that engages a cam portion on the female member with an annular groove on the male member.

3. The dry quick connector for loading and unloading a liquefied hydrocarbon tank car according to claim 2, wherein the number of the cam wrenches is two, and the cam wrenches are symmetrically disposed at a front end of the female member.

4. The dry quick connector for loading and unloading a liquefied hydrocarbon tank car according to any one of claims 1 to 3, wherein the valve core assembly specifically comprises:

a female valve umbrella located at the front end of the valve core assembly, the female valve umbrella being opposite to the check valve umbrella during the liquefied hydrocarbon filling process;

and the valve rod is positioned at the rear end of the female valve umbrella, one end of the valve rod is connected with the female valve umbrella, and the other end of the valve rod is connected with the valve conduction actuating mechanism.

5. The dry quick connector for loading and unloading a liquefied hydrocarbon tank vehicle as claimed in claim 4, wherein the valve opening actuator includes a handle drivingly connected to the valve stem for driving the female valve umbrella forward.

6. The dry quick coupling for loading and unloading a liquefied hydrocarbon tank car according to any one of claims 1 to 3, wherein the female member is fixedly attached to a distal end of the loading arm of the liquefied hydrocarbon by a taper pipe screw.

7. A dry quick connector for loading and unloading a liquefied hydrocarbon tank car according to any one of claims 1 to 3, wherein the male member is connected to the tank car feed port via a flange.

8. The dry quick connector for loading and unloading the liquefied hydrocarbon tank car as claimed in claim 7, wherein the rear end of the flange is connected with an ultra-short ball valve, and the ultra-short ball valve is used for closing the feed port of the tank car after the liquefied hydrocarbon is filled.

9. The dry quick connector for loading and unloading of liquefied hydrocarbon tank cars as claimed in claim 8, wherein a bypass valve is provided on said male member for discharging liquid in the pipe after the liquefied hydrocarbon is completely filled and the ultra-short ball valve is cut off.

10. The dry quick connector for loading and unloading a liquefied hydrocarbon tank vehicle as claimed in claim 1, wherein the reverse spring abuts on a rear end of the check valve umbrella.

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