CN212839485U

CN212839485U - Forged steel gate valve for high-temperature and high-pressure power station

Info

Publication number: CN212839485U
Application number: CN202020574756.8U
Authority: CN
Inventors: 孙作霖
Original assignee: Shanghai Power Plant Valve Co ltd
Current assignee: Shanghai Power Plant Valve Co ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2021-03-30
Anticipated expiration: 2030-04-17

Abstract

The utility model discloses a high temperature high pressure power station forged steel gate valve, including a pipe body, the top of body is equipped with the movable cylinder, be equipped with sealed piece between movable cylinder and the body, sealed piece comprises two semi-circular block groups, two adjacent one sides of sealed piece, the sealed pad of the equal fixedly connected with of bottom and inner wall is one, the sealed pad in close contact with of two adjacent one sides of sealed piece, the bottom of movable cylinder is pegged graft in the inside of sealed piece, a body, pass through bolt fixed connection between movable cylinder and the sealed piece, the top of movable cylinder is equipped with the cylinder cap, the sealed pad two of bottom fixedly connected with round of cylinder cap. The utility model discloses a sealed piece through body top is connected with the movable cylinder, because the inside of sealed piece and the sealed pad one of the equal fixedly connected with in bottom, so can both closely connect the contact with sealed pad when the medium through the body gives the movable cylinder effort that makes progress and downward effort to reach good sealed effect.

Description

Forged steel gate valve for high-temperature and high-pressure power station

Technical Field

The utility model relates to a gate valve technical field specifically is a high temperature high pressure power station forged steel gate valve.

Background

The gate valve of power station is also called as special valve of power station, and is mainly suitable for pipeline of various systems of fire power station to cut off or connect pipeline medium. Suitable media are: non-corrosive media such as water, steam, and the like. Compared with other valve products, the power station valve has the characteristics of high temperature and high pressure, unique self-sealing design, and higher pressure and more reliable sealing. Due to the special performance and technical characteristics and working conditions, the product also has the characteristic that other products cannot be replaced.

The existing valve has poor sealing performance, and incomplete sealing is easily caused when high-pressure media are met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high temperature high pressure power station forged steel gate valve to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a forged steel gate valve for a high-temperature and high-pressure power station comprises a pipe body, wherein a movable cylinder is arranged at the top of the pipe body, a sealing block is arranged between the movable cylinder and the pipe body and consists of two semicircular blocks, one side, the bottom and the inner wall, adjacent to the two sealing blocks, of each sealing block are fixedly connected with a first sealing gasket, the two sealing gaskets on the adjacent sides of the two sealing blocks are in close contact with each other, the bottom of the movable cylinder is inserted into the sealing blocks, the pipe body, the movable cylinder and the sealing blocks are fixedly connected through a first bolt, a cylinder cover is arranged at the top of the movable cylinder, a circle of second sealing gasket is fixedly connected at the bottom of the cylinder cover, the cylinder cover and the movable cylinder are fixedly connected through a second bolt, a nut is connected at the bottom of the second bolt through a thread, a through hole is formed in the middle of the cylinder cover, the through hole penetrates through, the utility model discloses a cylinder cover, including cylinder cover, connecting rod, ball, rolling mechanism, connecting rod, cylinder cover, connecting rod, rolling mechanism, connecting rod, rolling mechanism, and the bottom of connecting rod is equipped with threaded rod, two gag levers of cylinder cover bottom fixedly connected with, the bottom of threaded rod is equipped with the case, two the gag lever posts run through the both sides and the case sliding connection of case, the threaded hole is opened at the middle part of case, threaded hole and threaded rod threaded connection.

Preferably, the left end and the right end of the pipe body are respectively an inlet and an outlet, and the pipe body is made of forged steel.

Preferably, the section of the cylinder cover is in a step shape, and the cylinder cover and the movable cylinder are made of forged steel.

Preferably, the outer wall of the connecting rod is in sliding connection with the inner wall of the sealing sleeve, and the outer wall of the connecting rod is in close contact with the inner wall of the sealing sleeve.

Preferably, the top of connecting block and the lower fixed surface of hand wheel are connected, open the bottom of connecting block has two ball grooves, the ball inslot joint has the ball, scribble lubricating oil between ball groove and the ball, rolling mechanism is equipped with two sets ofly, two sets of rolling mechanism installs the both sides in the hand wheel bottom respectively.

Preferably, the valve core is cylindrical, and the outer wall of the top of the valve core is connected with the inner wall of the movable cylinder in a sliding mode.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model has the advantages that the sealing block at the top of the pipe body is connected with the movable cylinder, and the sealing gasket I is fixedly connected with the inner part and the bottom of the sealing block, so that the sealing block can be in close contact with the sealing gasket I when the medium passing through the pipe body exerts upward and downward forces on the movable cylinder, thereby achieving good sealing effect;

(2) the utility model discloses a roll through the last ball of rolling mechanism at the top of cylinder cap to make the hand wheel can be light more in the pivoted.

Drawings

Fig. 1 is a cross-sectional view of a front view of the present invention;

fig. 2 is a top view of the sealing block of the present invention;

FIG. 3 is a partial enlarged view of FIG. 1A;

FIG. 4 is a partial enlarged view of FIG. 1B;

fig. 5 is a partially enlarged view of fig. 1C.

In the figure: the device comprises a pipe body 1, a movable cylinder 2, a sealing block 3, a first bolt 4, a first sealing gasket 5, a cylinder cover 6, a second bolt 7, a nut 8, a second sealing gasket 9, a sealing sleeve 10, a connecting rod 11, a bearing 12, a rolling mechanism 13, a connecting block 131, a ball groove 132, a ball 133, a threaded rod 14, a valve core 15, a limiting rod 16, a threaded hole 17 and a hand wheel 18.

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. 1-5, the present invention provides a technical solution: a forged steel gate valve for a high-temperature and high-pressure power station comprises a pipe body 1, the left end and the right end of the pipe body 1 are respectively provided with an inlet and an outlet, the pipe body 1 is made of forged steel, a movable cylinder 2 is arranged at the top of the pipe body 1, a sealing block 3 is arranged between the movable cylinder 2 and the pipe body 1, the sealing block 3 is composed of two semicircular blocks, one side, the bottom and the inner wall of each of two adjacent sealing blocks 3 are fixedly connected with a sealing gasket I5, the sealing gaskets I5 on the adjacent sides of the two sealing blocks 3 are in tight contact, the bottom of the movable cylinder 2 is inserted into the sealing blocks 3, the sealing blocks 3 at the top of the pipe body 1 are connected with the movable cylinder 2, and the sealing gaskets I5 are fixedly connected inside and at the bottom of the sealing blocks 3, so that the movable cylinder 2 can be in tight contact with the sealing gaskets I5 when upward acting force and downward acting force are, the pipe body 1, the movable cylinder 2 and the sealing block 3 are fixedly connected through a first bolt 4, a cylinder cover 6 is arranged at the top of the movable cylinder 2, the section shape of the cylinder cover 6 is step-shaped, the cylinder cover 6 and the movable cylinder 2 are made of forged steel, a circle of second sealing gasket 9 is fixedly connected at the bottom of the cylinder cover 6, the cylinder cover 6 and the movable cylinder 2 are fixedly connected through a second bolt 7, a nut 8 is connected at the bottom of the second bolt 7 in a threaded manner, a through hole is formed in the middle of the cylinder cover 6 and penetrates through the top of the cylinder cover 6, a sealing sleeve 10 is fixedly connected with the inner wall of the bottom of the through hole, the outer wall of the connecting rod 11 is in sliding connection with the inner wall of the sealing sleeve 10, the outer wall of the connecting rod 11 is in tight contact with the inner wall of the sealing sleeve 10, a connecting rod 11 is arranged inside the through hole, a bearing 12 is fixedly connected at the top of the cylinder, the lower surface of the hand wheel 18 is provided with a rolling mechanism 13, the rolling mechanism 13 comprises a connecting block 131 and balls 133, the top of the connecting block 131 is fixedly connected with the lower surface of the hand wheel 18, the bottom of the connecting block 131 is provided with two ball grooves 132, the balls 133 are clamped in the ball grooves 132, lubricating oil is coated between the ball grooves 132 and the balls 133, the rolling mechanisms 13 are provided with two groups, the two groups of rolling mechanisms 13 are respectively arranged at two sides of the bottom of the hand wheel 18, the balls 133 on the rolling mechanisms 13 roll on the top of the cylinder cover 6, so that the hand wheel 18 can rotate more easily, the upper surface of the cylinder cover 6 below the balls 133 is provided with an arc-shaped groove, the balls 133 roll in the arc-shaped groove, the bottom of the connecting rod 11 is fixedly connected with a threaded rod 14 inside the movable cylinder 2, the bottom of the cylinder cover 6 is fixedly connected with two limiting rods 16, the bottom of, the valve core 15 is cylindrical, the outer wall of the top of the valve core 15 is in sliding connection with the inner wall of the movable cylinder 2, two limiting rods 16 penetrate through two sides of the valve core 15 and are in sliding connection with the valve core 15, a threaded hole 17 is formed in the middle of the valve core 15, and the threaded hole 17 is in threaded connection with the threaded rod 14.

The working principle is as follows: when the utility model discloses during the use, the hand wheel rotates, then drive connecting rod and threaded rod and rotate, the threaded hole threaded connection at threaded rod and case middle part, thereby let the case rise or descend, the sealed piece at body top is connected with the movable cylinder, because the inside of sealed piece and the sealed pad one of the equal fixedly connected with in bottom, so can both closely connect the contact with sealed pad when the medium through the body gives the movable cylinder effort that makes progress and downward effort, thereby reach good sealed effect, the last ball of roll mechanism rolls at the top of cylinder cap, thereby make the hand wheel can be light more in the pivoted.

To sum up, the utility model discloses a sealed piece 3 at 1 top of body is connected with movable cylinder 2, because the inside of sealed piece 3 and the sealed pad 5 of the equal fixedly connected with in bottom, so can both closely connect the contact with sealed pad 5 when the medium through body 1 gives movable cylinder 2 effort that makes progress and downward effort to reach good sealed effect, roll at the top of cylinder cap 6 through ball 133 on the rolling mechanism 13, thereby make the hand wheel 18 can be light more in the pivoted.

Claims

1. The utility model provides a high temperature high pressure power station forged steel gate valve, includes body (1), its characterized in that: the sealing device is characterized in that a movable cylinder (2) is arranged at the top of the pipe body (1), a sealing block (3) is arranged between the movable cylinder (2) and the pipe body (1), the sealing block (3) is composed of two semicircular blocks, one side, the bottom and the inner wall of each of the two adjacent sealing blocks (3) are fixedly connected with a first sealing gasket (5), the first sealing gasket (5) of each of the two adjacent sealing blocks (3) are in close contact, the bottom of the movable cylinder (2) is inserted into the sealing block (3), the pipe body (1), the movable cylinder (2) and the sealing block (3) are fixedly connected through a first bolt (4), a cylinder cover (6) is arranged at the top of the movable cylinder (2), a circle of second sealing gasket (9) is fixedly connected at the bottom of the cylinder cover (6), and the movable cylinder (2) are fixedly connected through a second bolt (7), the bottom of the second bolt (7) is in threaded connection with a nut (8), a through hole is formed in the middle of the cylinder cover (6), the through hole penetrates through the top of the cylinder cover (6), a sealing sleeve (10) is fixedly connected to the inner wall of the bottom of the through hole, a connecting rod (11) is arranged inside the through hole, a bearing (12) is fixedly connected to the top of the cylinder cover (6), the connecting rod (11) penetrates through the top of the cylinder cover (6) and is rotatably connected with the bearing (12) at the top of the cylinder cover (6), a hand wheel (18) is fixedly connected to the top of the connecting rod (11) at the top of the cylinder cover (6), a rolling mechanism (13) is arranged on the lower surface of the hand wheel (18), the rolling mechanism (13) comprises a connecting block (131) and a ball (133), an arc-shaped groove is formed in the upper surface of the cylinder cover (6) below the ball (133), and, the bottom of connecting rod (11) is at inside fixedly connected with threaded rod (14) of activity jar (2), two gag lever posts (16) of cylinder cap (6) bottom fixedly connected with, the bottom of threaded rod (14) is equipped with case (15) in the inside of body (1), two gag lever post (16) run through into the both sides and case (15) sliding connection of case (15), open threaded hole (17) in the middle part of case (15), threaded hole (17) and threaded rod (14) threaded connection.

2. The high-temperature high-pressure station forged steel gate valve of claim 1, wherein: the left end and the right end of the pipe body (1) are respectively an inlet and an outlet, and the pipe body (1) is made of forged steel.

3. The high-temperature high-pressure station forged steel gate valve of claim 1, wherein: the section shape of the cylinder cover (6) is step-shaped, and the cylinder cover (6) and the movable cylinder (2) are made of forged steel.

4. The high-temperature high-pressure station forged steel gate valve of claim 1, wherein: the outer wall of the connecting rod (11) is in sliding connection with the inner wall of the sealing sleeve (10), and the outer wall of the connecting rod (11) is in close contact with the inner wall of the sealing sleeve (10).

5. The high-temperature high-pressure station forged steel gate valve of claim 1, wherein: the top of connecting block (131) and the lower fixed surface of hand wheel (18) are connected, open the bottom of connecting block (131) has two ball grooves (132), ball (133) have been cup jointed in ball groove (132), scribble lubricating oil between ball groove (132) and ball (133), rolling mechanism (13) are equipped with two sets ofly, and are two sets of rolling mechanism (13) are installed respectively in the both sides of hand wheel (18) bottom.

6. The high-temperature high-pressure station forged steel gate valve of claim 1, wherein: the valve core (15) is cylindrical, and the outer wall of the top of the valve core (15) is connected with the inner wall of the movable cylinder (2) in a sliding mode.