CN213236200U - Check valve with nuclear-grade high Cv value - Google Patents

Abstract

The utility model discloses a nuclear grade high Cv value check valve, which comprises a valve body, the inside intermediate position of valve body is provided with the disk seat, the upper portion position of valve body is connected with the valve gap, a board body lower surface middle part fixed connection of valve gap founds a section of thick bamboo, the inside upside of founding a section of thick bamboo slides and is provided with the clamp plate, the upper surface of clamp plate rotates and is provided with the screw thread rotary column, and the upper surface that runs through the valve gap on the screw thread rotary column, the lower fixed surface of clamp plate is connected with the pressure spring, the lower extreme fixed connection of pressure spring is at the top surface of stand, the lower extreme fixedly. The utility model discloses in, the valve plate has the trend of pushing down under the pressure spring effect, guarantees valve body non return ability, provides the valve plate and rises the back restoring force to this valve plate moves up to parallel with the inside top surface of delivery port, realizes the purpose that improves the Cv value, establishes the screw thread rotary column on the valve gap, rotates through the screw thread rotary column and realizes the inside valve plate of valve body and pushes down the pressure increase, can realize that the valve plate receives the regulation of water pressure opening size.

Description

Check valve with nuclear-grade high Cv value

Technical Field

The utility model relates to a check valve field especially relates to high Cv value check valve of nuclear one-level.

Background

The check valve is a valve whose opening and closing part is a circular valve clack and acts by its own weight and medium pressure to block the medium from flowing backwards, and belongs to the automatic valve class, also called check valve, one-way valve, backflow valve or isolating valve. The motion mode of the valve clack is divided into a lifting type and a swing type, the lifting type check valve is similar to the stop valve in structure, only a valve rod for driving the valve clack is lacked, and in the check valve for the nuclear reactor, the Cv value of the check valve has higher requirements.

The check valve of general structure itself swing or rise the opening size of opening and have certain limit to lead to each check valve to cross the water flow limited, its Cv value is generally lower promptly, even the valve body Cv value is relatively higher, but its self-closing ability is weak, the phenomenon that can't the non-return appears easily, and the structure is fixed, can't realize the correspondence and adjust, and the practicality is lower.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art, and provides a nuclear grade high Cv value check valve.

In order to achieve the above purpose, the utility model adopts the following technical scheme: nuclear high Cv value check valve of one-level, including the valve body, the inside intermediate position of valve body is provided with the disk seat, the upper portion position of valve body is connected with the valve gap, the board body lower surface middle part fixedly connected with of valve gap founds a section of thick bamboo, the inside upside of founding a section of thick bamboo slides and is provided with the clamp plate, the upper surface of clamp plate rotates and is provided with the screw thread rotary column, and the upper surface of valve gap is run through to screw thread rotary column upper end, the lower fixed surface of clamp plate is connected with the pressure spring, the lower extreme fixed connection of pressure spring is on the top surface of stand, the lower extreme fixedly connected with valve plate of.

As a further description of the above technical solution:

the valve cover is bolted and fixed on the upper surface of the valve body through bolts, a plurality of bolts are arranged at equal intervals along the circumferential surface of the plate body of the valve cover, and a rubber ring structure is clamped between the valve cover and the connecting surface of the valve body.

As a further description of the above technical solution:

the upper end of the threaded rotary column is provided with an inner hexagonal groove, the column body of the threaded rotary column is correspondingly in threaded connection with the plate body of the valve cover, and the lower end of the threaded rotary column is correspondingly and rotatably connected to the middle of the upper surface of the pressing plate.

As a further description of the above technical solution:

the fixed draw runner that is provided with in the shaft outside of stand, the fixed spout that is provided with of shaft inner wall of upright section of thick bamboo, and draw runner and spout correspond the sliding connection, the shaft upper end of stand corresponds the slip setting inside the shaft of upright section of thick bamboo.

As a further description of the above technical solution:

the valve comprises a valve body and is characterized in that a water inlet and a water outlet are respectively arranged on two sides of the valve body, and the valve seat is relatively positioned in the middle between the water inlet and the water outlet.

As a further description of the above technical solution:

the valve seat sets up to cavity, the upper portion position of valve seat is provided with corresponding butt joint groove, the shape size in butt joint groove corresponds with the board body shape size of valve plate, the fixed packing ring that is provided with of upper surface middle part position avris of valve seat.

The utility model discloses following beneficial effect has:

1. the utility model discloses in the high Cv value check valve of nuclear one-level, the valve plate place stand has decurrent trend of pushing down under the effect of pressure spring, guarantees the non return ability of valve body self, also provides the corresponding restoring force after the valve plate rises to this valve plate can rebound to parallel with the inside top surface of delivery port, increases the water flow, realizes improving the purpose of Cv value.

2. The utility model discloses among the high Cv value check valve of nuclear one-level, the upper surface switching of valve gap has the screw thread rotary column, can realize the increase of the inside valve plate downforce of valve body through the rotation of screw thread rotary column to can realize that the valve plate receives the water pressure to open the regulation of mouthful size, also can realize that the downforce of valve plate is sealed, whole controllability is high, and the valve plate can realize portably dismantling and carry out the maintenance of valve body inside.

Drawings

FIG. 1 is a front sectional view of a nuclear grade high Cv value check valve;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a top view of a post insert connection structure of a nuclear grade high Cv value check valve;

fig. 4 is a top view of a bonnet connection for a nuclear-grade high Cv-value check valve.

Illustration of the drawings:

1. a valve body; 2. a water inlet; 3. a water outlet; 4. a valve seat; 5. a valve plate; 6. a column; 7. a valve cover; 8. erecting a cylinder; 9. a bolt; 10. rotating the column by the screw thread; 11. pressing a plate; 12. a pressure spring; 13. a gasket; 14. a chute; 15. and (4) a slide bar.

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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the present invention provides an embodiment: a nuclear first-level high Cv value check valve comprises a valve body 1, a valve seat 4 is arranged in the middle of the interior of the valve body 1, a valve cover 7 is connected to the upper portion of the valve body 1 to provide a basic structure of the check valve, a vertical cylinder 8 is fixedly connected to the middle of the lower surface of a plate body of the valve cover 7 to provide upper portion limiting connection, a pressing plate 11 is arranged on the upper side of the interior of the vertical cylinder 8 in a sliding mode to provide corresponding pressing operation, a threaded rotary column 10 is rotatably arranged on the upper surface of the pressing plate 11 to achieve adjusting operation of the upper position and the lower position, and the upper end of the threaded rotary column 10 penetrates through the upper surface of the valve cover 7, the lower surface of the pressing plate 11 is fixedly connected with a pressure spring 12 to provide the downward pressure of the valve plate 5, the lower end of the pressure spring 12 is fixedly connected to the top surface of the upright column 6, the lower end of the upright column 6 is fixedly connected with the valve plate 5 to realize corresponding check control, and the valve plate 5 is correspondingly pressed on the valve seat 4 to realize corresponding closing and opening operations.

The valve cover 7 is fixed on the upper surface of the valve body 1 through the bolt 9 in a bolted mode, the bolts 9 are arranged at equal intervals along the circumferential surface of the plate body of the valve cover 7, the detachable connection is guaranteed, meanwhile, the connection stability is improved, a rubber ring structure is clamped between the connection surfaces of the valve cover 7 and the valve body 1, the connection tightness is improved, the upper end of the threaded rotary column 10 is provided with an inner hexagonal groove, the auxiliary rotary adjusting hole position of the threaded rotary column 10 is realized, the column body of the threaded rotary column 10 is correspondingly in threaded connection with the plate body of the valve cover 7, the up-down adjusting operation of the pressing plate 11 is realized through corresponding switching, the lower end of the threaded rotary column 10 is correspondingly and rotatably connected to the middle position of the upper surface of the pressing plate 11, the outer side of the column body of the upright column 6 is fixedly provided with a sliding strip 15, the inner wall of the column body of the upright column 8 is fixedly provided with a sliding groove 14, the sliding strip 15 is correspondingly and slidably, the both sides of valve body 1 are provided with water inlet 2 and delivery port 3 respectively, disk seat 4 is located the middle part position between water inlet 2 and the delivery port 3 relatively, disk seat 4 sets up to cavity, ensure the operation of passing through of water, the upper portion position of disk seat 4 is provided with corresponding butt joint groove, the shape size of butt joint groove corresponds with the board body shape size of valve plate 5, accurate butt joint about the realization, the fixed packing ring 13 that is provided with of upper surface middle part position avris of disk seat 4, increase the leakproofness after 15 pushes down of valve plate.

The working principle is as follows: when carrying out nuclear check valve and using, the medium is by the inside of water inlet 2 entering valve body 1, make valve plate 5 push up under the effect of medium pressure, thereby realize the corresponding of valve and open, valve plate 5 can rise to the maximum height under the effect of medium pressure this moment, thereby guarantee the high Cv performance of check valve self, when stopping the medium and supplying, valve plate 5 pushes down under the effect of upper pressure spring 12, itself can realize the non return operation, the medium pressure of backward flow further pushes down valve plate 5, can guarantee that the effect of non return is better, also can be through rotating screw rotary column 10, make clamp plate 11 push down, thereby realize the increase of pressure spring 12 elasticity, not only can adjust the regulation of valve plate 5 opening height size with this, also can realize directly sealing whole check valve, holistic controllability is high, the practicality is high.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (6)

1. Nuclear one-level high Cv value check valve, including valve body (1), its characterized in that: the inside intermediate position of valve body (1) is provided with disk seat (4), the upper portion position of valve body (1) is connected with valve gap (7), the board body lower surface middle part fixedly connected with of valve gap (7) founds a section of thick bamboo (8), the inside upside of founding a section of thick bamboo (8) slides and is provided with clamp plate (11), the upper surface of clamp plate (11) rotates and is provided with screw thread rotary column (10), and the upper surface of valve gap (7) runs through on screw thread rotary column (10), the lower fixed surface of clamp plate (11) is connected with pressure spring (12), the lower extreme fixed connection of pressure spring (12) is at the top surface of stand (6), the lower extreme fixedly connected with valve plate (5) of stand (6), and valve plate (5) correspond to press and put on disk seat (4).

2. The nuclear-grade high Cv-value check valve of claim 1, wherein: the valve cover (7) is bolted and fixed on the upper surface of the valve body (1) through bolts (9), the bolts (9) are arranged at equal intervals along the circumferential surface of the plate body of the valve cover (7), and a rubber ring structure is clamped between the connecting surfaces of the valve cover (7) and the valve body (1).

3. The nuclear-grade high Cv-value check valve of claim 1, wherein: the upper end of the threaded rotary column (10) is provided with an inner hexagonal groove, the column body of the threaded rotary column (10) is correspondingly in threaded connection with the plate body of the valve cover (7), and the lower end of the threaded rotary column (10) is correspondingly rotatably connected to the middle of the upper surface of the pressing plate (11).

4. The nuclear-grade high Cv-value check valve of claim 1, wherein: the fixed draw runner (15) that is provided with in the shaft outside of stand (6), the shaft inner wall of a vertical section of thick bamboo (8) is fixed and is provided with spout (14), and draw runner (15) correspond with spout (14) and slide and connect, the shaft upper end of stand (6) corresponds to slide and sets up inside the shaft of a vertical section of thick bamboo (8).

5. The nuclear-grade high Cv-value check valve of claim 1, wherein: the water inlet (2) and the water outlet (3) are respectively arranged on two sides of the valve body (1), and the valve seat (4) is relatively located in the middle between the water inlet (2) and the water outlet (3).

6. The nuclear-grade high Cv-value check valve of claim 1, wherein: the valve seat (4) is hollow, a corresponding butt joint groove is formed in the upper portion of the valve seat (4), the shape and the size of the butt joint groove correspond to those of the valve plate body of the valve plate (5), and a gasket (13) is fixedly arranged on the side of the middle portion of the upper surface of the valve seat (4).

Images