CN215257844U

CN215257844U - Marine external thread main control valve

Info

Publication number: CN215257844U
Application number: CN202120427821.9U
Authority: CN
Inventors: 柳一波; 王维龙; 柳水清; 牟倍瑶; 宋玉涛
Original assignee: YANTAI PETROLEUM MACHINERY CO Ltd
Current assignee: YANTAI PETROLEUM MACHINERY CO Ltd
Priority date: 2021-02-27
Filing date: 2021-02-27
Publication date: 2021-12-21
Anticipated expiration: 2031-02-27

Abstract

The utility model discloses a marine external screw thread main control valve, including valve body subassembly, piston and sealing member, the valve body subassembly includes valve body and copper sheathing, the copper sheathing is located in the valve body, in the copper sheathing was located to the piston cover, with copper sheathing sliding connection, the piston middle part set up the seal groove, the sealing member cover is located in the seal groove, sealing member surface upper portion sets up the R angle, and sealing member surface lower part sets up the external conical surface, the copper sheathing top sets up interior conical surface, the external conical surface forms the conical surface with interior conical surface cooperation and seals. The utility model discloses a sealing member structure to and the tapered seal structure solution adopts the standard component sealing washer to seal not tight under high pressure between sealing member and the copper sheathing, and the standard component sealing washer is not enough because of the packing power, is blown off the problem that leads to sealed inefficacy by high-pressure wind easily.

Description

Marine external thread main control valve

Technical Field

The invention relates to the technical field of oil engine and gas starting motor assemblies, in particular to a marine external thread main control valve.

Background

The matched air starting motor uses a main control valve, is generally used for starting a diesel engine and is an important part in an air starting motor pipe system; compared with the environment in which the main control valve of a diesel engine for land power generation is used, the environment in which the main control valve for the marine main control valve is used is severe, the pipeline is dirty, the moisture of compressed air is high, piston clamping stagnation in the main control valve and failure of a sealing ring can be caused, particularly the sealing ring for sealing a main air passage is easy to cause untight sealing due to clamping stagnation, and the failure of an air starting motor is caused; the conventional marine main control valve adopts an internal thread connection mode, and is inconvenient to disassemble and assemble during point inspection and maintenance.

In view of the above reasons, the main control valve with external thread connection is convenient for users to disassemble, assemble and maintain; to the jamming of sealing washer and the too high inefficacy problem that causes of atmospheric pressure, customize the sealing member, adopt the sealed design of conical surface to satisfy effective sealing under the high pressure.

Disclosure of Invention

The utility model discloses a sealing member structure to and the sealed solution of awl type between sealing member and the copper sheathing adopts the standard component sealing washer sealed not tight under high pressure condition, and the standard component sealing washer is not enough because of the packing power, is blown off the problem that leads to sealed inefficacy by high-pressure wind easily.

The utility model discloses a marine external screw thread main control valve, including valve body subassembly, piston and sealing member, the valve body subassembly includes valve body and copper sheathing, the copper sheathing is inlayed in the valve body, copper sheathing and piston sliding connection, the piston middle part sets up the seal groove, the sealing member cover is located in the seal groove, sealing member surface upper portion sets up the R angle, and sealing member surface lower part sets up the external cone face, the copper sheathing top sets up the interior conical surface, the external cone face forms the conical surface with the interior conical surface cooperation and seals.

The utility model discloses a marine external screw thread main control valve, the air inlet of valve body sets up the external screw thread, and the gas outlet of valve body sets up the external screw thread, and the valve body passes through external screw thread gland nut A fixed connection with the intake pipe, and the valve body passes through external screw thread gland nut B fixed connection with the outlet duct.

The utility model discloses a marine external screw thread master control valve, the sealing member is butadiene acrylonitrile rubber.

The utility model discloses a marine external screw thread master control valve, the hardness of sealing member is greater than 75D shore hardness.

The utility model discloses a marine external screw thread master control valve, the advantage that has for prior art is: the conical seal of the sealing element ensures the sealing effect under the high-pressure condition, and the air inlet and the air outlet of the main control valve are connected with the pipeline by adopting an external thread compression nut, so that the disassembly of point inspection and maintenance is facilitated.

Drawings

Fig. 1 is a schematic view of a cross-sectional structure of a marine external thread main control valve of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at C;

FIG. 3 is a schematic cross-sectional view of a sealing member of the marine external thread main control valve of the present invention;

fig. 4 the utility model relates to a marine external screw thread master control valve piston section schematic diagram.

Description of the figures

1 … valve body 2 … copper sleeve 3 … piston 4 … sealing element

5 … valve cover with sealing groove 6 … external conical surface 7 … internal conical surface 8 …

9 … external thread 10 … external thread gland nut A11 … air inlet pipe 12 … air outlet pipe

13 … external thread pressing nut B14 … spring

Detailed Description

The anti-rollover device of the side-tipping unloading machine of the present invention will be described in further detail with reference to fig. 1 to 3 of the accompanying drawings.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

The utility model discloses a marine external screw thread main control valve please refer to each relevant picture of fig. 1 to 4, including valve body subassembly, piston 3 and sealing member 4, the valve body subassembly includes valve body 1 and

copper sheathing

2, 2 covers of copper sheathing are located in the

valve body

1, 3 covers of piston are located in the copper sheathing 2, with 2 sliding connection of copper sheathing, 3 middle parts of piston set up

seal groove

5, 4 covers of sealing member are located in the

seal groove

5, 4 surface upper portions of sealing member set up the R angle, and sealing member surface lower part sets up the external cone face 6, the copper sheathing top sets up interior conical surface 7, the external cone face 6 forms the conical surface with the cooperation of interior conical surface 7 and seals. The valve cover assembly with threads is connected with the valve body assembly, and the piston 3, the spring 14 and the sealing rings at each part are assembled in the cavity of the valve body assembly to form two sealing cavities. The lower part of the outer surface of the sealing element 4 is provided with an outer conical surface 6, the top end of the copper sleeve 2 is provided with an inner conical surface 7, and the outer conical surface 6 and the inner conical surface 7 are matched to form a conical surface seal, so that the sealing effectiveness is ensured. The conical surface seal can ensure an effective sealing state under the action of spring potential energy and high-pressure gas in a sealing state. 3 middle parts of piston set up seal groove 5, in seal groove 5 was located to sealing member 4 covers, 4 internal diameter designs of sealing member far are less than piston 3's external diameter, and the installation is in place back sealing member 4 and piston 3's tightening force strengthen, guarantee under the high-pressure wind effect indeformable, not blown and corrugate, sealing member 4 surface upper portion department designs the R angle, is convenient for effectively compress, remains effectual elastic deformation throughout.

The utility model discloses a marine external screw thread main control valve please refer to each relevant picture of fig. 1 to fig. 4, the air inlet of valve body 1 sets up external screw thread 9, and the gas outlet of valve body 1 sets up external screw thread 9, and the valve body passes through external screw thread gland nut A10 fixed connection with intake pipe 11, and valve body 1 passes through external screw thread gland nut B13 fixed connection with outlet duct 12. The air inlet end and the air outlet end of the main control valve are both provided with external threads 9, and an air inlet pipe 11 and an air outlet pipe 12 are connected and fastened together by adopting an external thread compression nut A10 and an external thread compression nut B13, so that the structure is convenient to disassemble and assemble during daily maintenance.

The utility model discloses a marine external screw thread master control valve please refer to each relevant picture of fig. 1-4, sealing member 4 is butadiene acrylonitrile rubber. Further, the hardness of the sealing element 4 is greater than 75 shore D. The sealing element 4 needs to be used in high pressure wind and oil environment, so that oil-resistant butadiene-acrylonitrile rubber is adopted. Because need closely laminate sealing member 4 and inside copper sheathing 2, guarantee effectual leakproofness, because of adopting high shore hardness.

The above description is only for the description of several embodiments of the present invention, but the scope of the present invention should not be considered as falling within the scope of the present invention, in which all the equivalent changes or modifications or the equal-scale enlargement or reduction etc. according to the design spirit of the present invention are made.

Claims

1. The utility model provides a marine external screw thread main control valve which characterized in that: including valve body subassembly, piston (3) and sealing member (4), the valve body subassembly includes valve body (1) and copper sheathing (2), in valve body (1) was located to copper sheathing (2) cover, in copper sheathing (2) was located to piston (3) cover, with copper sheathing (2) sliding connection, piston (3) middle part set up seal groove (5), in seal groove (5) was located to sealing member (4) cover, sealing member (4) surface upper portion sets up the R angle, and sealing member (4) surface lower part sets up outer conical surface (6), copper sheathing (2) top sets up inner conical surface (7), outer conical surface (6) and inner conical surface (7) cooperation form the conical surface sealed.

2. The marine external thread main control valve of claim 1, wherein: the air inlet of valve body (1) sets up external screw thread (9), and the gas outlet of valve body (1) sets up external screw thread (9), and valve body and intake pipe (11) are through external screw thread gland nut A (10) fixed connection, and valve body (1) and outlet duct (12) are through external screw thread gland nut B (13) fixed connection.

3. The marine external thread main control valve of claim 1, wherein: the sealing element (4) is nitrile butadiene rubber.

4. The marine external thread main control valve of claim 1, wherein: the hardness of the sealing element (4) is greater than 75 Shore D.