CN211550544U

CN211550544U - High-temperature high-pressure angle type forge welding balance stop valve

Info

Publication number: CN211550544U
Application number: CN201922160480.9U
Authority: CN
Inventors: 刘雪芬; 王志敏; 叶棋书
Original assignee: Lishui Spark Valve Co ltd
Current assignee: Lishui Spark Valve Co ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-09-22
Anticipated expiration: 2029-12-05

Abstract

The utility model discloses a high temperature high pressure angle type forge welding balance stop valve, including the valve body pipe, the bottom inboard of valve body pipe is equipped with the shutoff lamella, the outside of shutoff lamella is equipped with the sleeve, telescopic top is equipped with O type circle, the inboard of O type circle is equipped with fixed valve rod, the outside of fixed valve rod is equipped with the valve clack lid, the outside of valve clack lid is equipped with the support, the valve body with the detachable connection of valve clack lid, the inboard of valve clack lid is equipped with the valve gap, the inboard of valve gap is equipped with the cushion, the top of cushion is equipped with the tetrafluoro pad, the top of tetrafluoro pad is equipped with the filler, the top sealing connection that packs presses the cover, the top of valve body pipe is equipped with lock nut, lock nut's outside periphery fixed connection hand. The whole convenient combination installation of this kind of equipment, the leakproofness is good, can carry out high strength high temperature resistant operation simultaneously, and anticorrosive, the wearability is better, and the functionality is stronger.

Description

High-temperature high-pressure angle type forge welding balance stop valve

Technical Field

The utility model relates to a valve equipment technical field specifically is balanced stop valve of high temperature high pressure angle type forge welding.

Background

The shut-off valve is also called a shut-off valve, and belongs to a forced sealing type valve, so when the valve is closed, pressure must be applied to the valve clack to force the sealing surface not to leak. When the medium enters the valve from the lower part of the valve clack, the resistance to be overcome by the operating force is the friction force between the valve rod and the packing and the thrust generated by the pressure of the medium, the force for closing the valve is larger than the force for opening the valve, so the diameter of the valve rod is larger, otherwise the failure of the valve rod buckling can occur. The connection mode is divided into three types: flange connection, screw thread connection and welding connection. After the self-sealing valve appears, the medium flow direction of the stop valve is changed to enter the valve cavity from the upper part of the valve clack, at this time, under the action of medium pressure, the force for closing the valve is small, the force for opening the valve is large, and the diameter of the valve rod can be correspondingly reduced. At the same time, this type of valve is also relatively tight under the action of the medium. The valve of China has been specified in the 'three-transformation and three-transformation' way, and the flow direction of the stop valve is uniformly from top to bottom. When the stop valve is opened, the opening height of the valve clack is 25% -30% of the nominal diameter, the flow reaches the maximum, and the valve reaches the full-open position. Therefore, the fully open position of the shut-off valve is determined by the stroke of the valve clack.

The opening and closing member of the stop Valve (Globe Valve) is a plug-shaped Valve flap, the upper surface of the seal is a plane or sea cone surface, and the Valve flap moves linearly along the central line of the Valve seat. The valve rod can move in a mode (the common name is a hidden rod) and can also be used for controlling the flow of various types of fluid such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like in a lifting rotating rod mode. Therefore, this type of shut-off valve is very suitable for shut-off or regulation and throttling. The valve rod of the valve has relatively short opening or closing stroke and reliable cut-off function, and the valve is suitable for regulating flow rate owing to the proportional relation between the valve seat port change and the valve clack stroke.

At present, the traditional stop valve is poor in adjusting precision and large in opening torque, single-layer sealing is adopted in sealing, the sealing performance is poor, the traditional equipment needs to be improved due to the problems, and therefore the high-temperature high-pressure angle type forge welding balance stop valve is provided.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The not enough to prior art, the utility model provides a high temperature high pressure angle forge welding balance stop valve has solved present traditional stop valve and has adjusted the precision poor, and the leakproofness is not good, and wear-resisting, high temperature resistant, corrosion resistance can be relatively poor, the installation combination of being not convenient for use convenience inadequately problem.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: high temperature high pressure angle formula forge welding balance stop valve, including the valve body pipe, the bottom inboard of valve body pipe is equipped with the shutoff lamella, the outside of shutoff lamella is equipped with the sleeve, telescopic top is equipped with O type circle, the inboard of O type circle is equipped with fixed valve rod, the outside of fixed valve rod is equipped with the valve clack lid, the outside of valve clack lid is equipped with the support, the valve body pipe with the detachable connection of valve clack lid, the inboard of valve clack lid is equipped with the valve gap, the inboard of valve gap is equipped with the cushion, the top of cushion is equipped with the tetrafluoro pad, the top of tetrafluoro pad is equipped with packs, the top sealing connection that packs presses the cover, the top of valve body pipe is equipped with lock nut, lock nut's outside periphery fixed connection hand.

As a further preferred mode of the present invention, the inner side of the hand wheel is provided with a flat key, and the flat key is fixedly connected with the hand wheel.

As a further preferred mode of the present invention, the bottom of the hand wheel is provided with a set screw, and the inner side of the set screw is connected with a bearing and a cap.

As a further preferred mode of the present invention, the left lower side of the bearing and cap is provided with a copper nut, and the right lower side of the copper nut is connected with the bearing.

As a further preferred mode of the present invention, the outside of the packing pressing sleeve is provided with a packing pressing plate.

As the utility model discloses a further preferred mode, the top of fixed valve rod is equipped with the linkage post piece, the upper and lower both ends of linkage post piece all are equipped with hexagon bolt, be equipped with sealed flat key in the middle of the inboard of linkage post piece.

(III) advantageous effects

The utility model provides a balanced stop valve of high temperature high pressure angle type forge welding. The method has the following beneficial effects:

1. the structure is simple, the manufacture and the maintenance are convenient, and the cost is low;

2. the adjustment precision is high, and the adjustment can be carried out;

3. the working stroke is small, and the opening and closing time is short.

4. Good sealing performance, small friction force between sealing surfaces and long service life.

5. The valve is integrally forged, the strength of the valve is far higher than that of a cast valve, and the valve is effectively protected

The service life of the valve is proved.

6. The moving seal has high hardness, good wear resistance, high temperature resistance, corrosion resistance and scratch resistance, and long service life.

7. The valve rod is subjected to quenching and tempering and surface nitriding treatment, and has good corrosion resistance and scratch resistance.

Drawings

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

fig. 2 is a schematic view of the top view structure of the linkage column block of the present invention.

In the figure, a valve body pipe-1, a plugging flap-2, a sleeve-3, an O-shaped ring-4, a fixed valve rod-5, a valve flap cover-6, a support-7, a valve cover-8, a cushion block-9, a tetrafluoro pad-10, a filler-11, a filler pressure sleeve-12, a locking nut-13, a hand wheel-14, a fixed filler-15, a bearing nut-16, a copper nut-17, a bearing-18, a filler pressure plate-19, a linkage column block-20, a hexagon bolt-21 and a sealing flat key-22.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, an embodiment of the present invention provides a technical solution: high temperature high pressure angle formula forge welding balance stop valve, including valve body pipe 1, the bottom inboard of valve body pipe 1 is equipped with shutoff lamella 2, the outside of shutoff lamella 2 is equipped with sleeve 3, the top of sleeve 3 is equipped with O type circle 4, the inboard of O type circle 4 is equipped with fixed valve rod 5, the outside of fixed valve rod 5 is equipped with valve clack lid 6, the outside of valve clack lid 6 is equipped with support 7, valve body pipe 1 with valve clack lid 6 detachable connection, the inboard of valve clack lid 6 is equipped with valve gap 8, the inboard of valve gap 8 is equipped with cushion 9, the top of cushion 9 is equipped with tetrafluoro pad 10, the top of tetrafluoro pad 10 is equipped with packs 11, the top sealing connection packing pressure cover 12 that packs 11, the top of valve body pipe 1 is equipped with lock nut 13, lock nut 13's outside periphery fixed connection hand wheel 14.

The inner side of the hand wheel 14 is provided with a flat key 15, and the flat key 15 is fixedly connected with the hand wheel 14. The hand wheel 14 and the flat key 15 are matched to control the opening and closing of the whole valve through the design.

The bottom of the hand wheel 14 is provided with a set screw, and the inner side of the set screw is connected with a bearing and cap 16. The design is convenient to disassemble and assemble, and is convenient.

And a copper nut 17 is arranged on the left lower side of the bearing combining cap 16, and a bearing 18 is connected to the right lower side of the copper nut 17. Through the design, the barrel nut 17 and the bearing 18 can be used for strengthening connection and buckling, and the assembly is convenient.

And a packing pressing plate 19 is arranged on the outer side of the packing pressing sleeve 12. Through the design, the packing pressure plate 19 can be used for improving the pressure of the packing pressure sleeve 12, and the fastening effect is enhanced.

The top of fixed valve rod 5 is equipped with linkage post piece 20, the upper and lower both ends of linkage post piece 20 all are equipped with hex bolts 21, be equipped with sealed parallel key 22 in the middle of the inboard of linkage post piece 20. By such a design, the interlocking column block 20 can be used to enhance sealing.

The working principle is as follows: when the device is used, the valve clack is connected with the valve rod through the valve rod pressure plate, and the valve is throttling and stopping. The handle is rotated clockwise, the valve rod moves downwards, the valve clack is pushed to move downwards, and the area of an opening passage on the valve seat and the valve clack is gradually reduced, so that the aims of reducing the flow of fluid and reducing the pressure by throttling are fulfilled. When the handle is rotated anticlockwise, the opposite is performed, the through holes are formed in the center of the valve clack and the head of the valve rod, so that high-pressure liquid in the lower cavity of the valve clack enters the upper cavity of the valve clack through the through holes, the self-balancing effect of the pressure of the upper cavity and the lower cavity of the valve clack is achieved, the switching moment is convenient to reduce, and the switch is light and flexible; the valve can also be used as a closed circuit device, the handle is turned clockwise to close the valve, and the valve is turned counterclockwise to open the valve.

The utility model discloses a valve body pipe-1, shutoff lamella-2, sleeve-3, O type circle-4, fixed valve rod-5, valve clack lid-6, support-7, valve gap-8, cushion-9, tetrafluoro pad-10, pack-11, pack pressure cover-12, lock nut-13, hand wheel-14, fixed packing-15, bearing and cap-16, copper nut-17, bearing-18, packing clamp plate-19, linkage column block-20, hex bolts-21, sealed parallel key-22 part are the general standard component or the part that technical staff in this field knows, its structure and principle all can know through the technical manual or know through conventional experimental method, the problem that the utility model solves is that the current traditional stop valve adjusts the precision poor, the opening torque is large, and the sealing adopts single-layer sealing, so that the sealing performance is poor. The whole convenient combination installation of this kind of equipment, the leakproofness is good, can carry out high strength high temperature resistant operation simultaneously, and anticorrosive, the wearability is better, and the functionality is stronger.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. High temperature high pressure angle type forge welding balance stop valve, including valve body pipe (1), its characterized in that: the bottom inner side of the valve body pipe (1) is provided with a plugging flap (2), the outer side of the plugging flap (2) is provided with a sleeve (3), the top of the sleeve (3) is provided with an O-shaped ring (4), the inner side of the O-shaped ring (4) is provided with a fixed valve rod (5), the outer side of the fixed valve rod (5) is provided with a valve flap cover (6), the outer side of the valve flap cover (6) is provided with a support (7), the valve body pipe (1) is detachably connected with the valve flap cover (6), the inner side of the valve flap cover (6) is provided with a valve cover (8), the inner side of the valve cover (8) is provided with a cushion block (9), the top of the cushion block (9) is provided with a tetrafluoro pad (10), the top of the tetrafluoro pad (10) is provided with a filler (11), the top of the filler (11) is connected with a filler pressure sleeve, the outer circumferential surface of the lock nut (13) is fixedly connected with a hand wheel (14).

2. The high temperature and high pressure angular forge welding balance stop valve of claim 1, wherein: the inner side of the hand wheel (14) is provided with a flat key (15), and the flat key (15) is fixedly connected with the hand wheel (14).

3. The high temperature and high pressure angular forge welding balance stop valve of claim 1, wherein: the bottom of the hand wheel (14) is provided with a set screw, and the inner side of the set screw is connected with a bearing combining cap (16).

4. The high temperature and high pressure angular forge welding balance stop valve of claim 3, wherein: and a copper nut (17) is arranged on the left lower side of the bearing combining cap (16), and a bearing (18) is connected to the right lower side of the copper nut (17).

5. The high temperature and high pressure angular forge welding balance stop valve of claim 1, wherein: and a packing pressing plate (19) is arranged on the outer side of the packing pressing sleeve (12).

6. The high temperature and high pressure angular forge welding balance stop valve of claim 1, wherein: the top of fixed valve rod (5) is equipped with linkage post piece (20), the upper and lower both ends of linkage post piece (20) all are equipped with hex bolts (21), be equipped with sealed flat key (22) in the middle of the inboard of linkage post piece (20).