CN218236165U - Ultra-zero-boundary high-temperature and high-pressure stop valve - Google Patents
Ultra-zero-boundary high-temperature and high-pressure stop valve Download PDFInfo
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- CN218236165U CN218236165U CN202220621870.0U CN202220621870U CN218236165U CN 218236165 U CN218236165 U CN 218236165U CN 202220621870 U CN202220621870 U CN 202220621870U CN 218236165 U CN218236165 U CN 218236165U
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Abstract
The utility model discloses an ultra-zero boundary high temperature high pressure stop valve, include: a valve body; the bottom side of the interior of the valve body is provided with a main valve flap; the auxiliary valve clack is arranged at the top of the main valve clack; the valve rod penetrates through the interior of the valve body, and the outer side of the top of the valve rod is of a sawtooth structure; the top of the hand wheel is connected with a hand wheel through gear transmission; the valve rod is fixedly connected with the support through the valve rod nut; the top of the valve body is fixedly provided with the support through a screw rod, the inner side of the top of the auxiliary valve clack is provided with a valve clack gland, and the inner side of the valve clack gland is tightly attached with a valve rod; the bottom end of the valve rod is connected to the inner side of the auxiliary valve clack in a clamping mode, and a self-sealing valve cover is arranged inside the valve body. The ultra-zero high-temperature and high-pressure stop valve has small opening and closing torque under the working conditions of high pressure, high temperature and large caliber pressure, the sealing surface is not easy to leak, and the cavity sealing is not easy to leak.
Description
Technical Field
The utility model relates to a stop valve technical field specifically is a high temperature high pressure stop valve of zero boundary.
Background
Along with the high-speed development of the electric power industry in China to further reduce the coal consumption and improve the heat efficiency of the thermal power generating unit, the capacity and parameters of the thermal power generating unit are continuously improved, the supercritical technology is widely applied, and a large number of foreign exchanges are imported from foreign countries to obtain a large number of supercritical valves of the main steam pipeline every year in China, so that the research, development and manufacture of the supercritical valves have important significance for the localization of large supercritical units in China.
At present, the supercritical stop valve in the market has large opening and closing torque under the working conditions of high pressure, high temperature and large caliber under pressure, the sealing surface is easy to leak, and the cavity is easy to leak, so that the supercritical stop valve with high temperature and high pressure is provided, and the problems provided in the above are solved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a super zero bound high temperature high pressure stop valve to it is big to solve the supercritical stop valve high pressure on the existing market that above-mentioned background art provided, high temperature, heavy-calibre area and open and close moment under the operating mode, and sealed face is easily revealed, the sealed problem of easily revealing of cavity.
In order to achieve the above object, the utility model provides a following technical scheme: a super zero-bound high temperature and high pressure shut-off valve comprising:
a valve body;
the bottom side of the interior of the valve body is provided with a main valve flap;
the auxiliary valve clack is arranged at the top of the main valve clack;
the valve rod penetrates through the interior of the valve body, and the outer side of the top of the valve rod is of a sawtooth structure;
the top of the hand wheel is connected with a hand wheel through gear transmission;
the valve rod is fixedly connected with the support through the valve rod nut;
the support, the top of valve body passes through screw rod fixed mounting has the support.
Preferably, a valve clack gland is installed on the inner side of the top of the auxiliary valve clack, and a valve rod is tightly attached to the inner side of the valve clack gland;
the bottom end of the valve rod is connected to the inner side of the auxiliary valve clack in a clamping mode.
Preferably, a self-sealing valve cover is arranged inside the valve body and is sealed with the valve body through a self-sealing ring;
wherein, the valve rod is penetrated through the inner side of the self-sealing valve cover.
Preferably, four open rings are arranged on the outer side of the self-sealing valve cover, and a restraining ring arranged on the outer side of the self-sealing valve cover is arranged above the four open rings;
wherein, the containment ring is connected and fixed with the self-sealing valve cover through a bolt.
Compared with the prior art, the beneficial effects of the utility model are that: the ultra-zero high-temperature and high-pressure stop valve has small opening and closing torque under the working conditions of high pressure, high temperature and large caliber under pressure, the sealing surface is not easy to leak, and the cavity sealing is not easy to leak;
1. the opening and closing moment is large under pressure, and the sealing surface leakage solving device comprises: a movable opening and closing part is formed by the main valve clack, the auxiliary valve clack, the valve clack gland and the valve rod and is designed to be of a high-inlet low-position structure, the valve rod is driven to move downwards by the hand wheel when the movable opening and closing part is closed, the sealing surface of the main valve clack is firstly contacted with the sealing surface of the valve body, then the auxiliary valve clack is contacted with the sealing surface of the main valve clack, sealing force is continuously exerted on the sealing surface through the valve rod, at the moment, a small amount of leakage or no leakage is carried out on the sealing surface, and the pressure difference between an inlet port and an outlet port is large because a medium is high-inlet low-outlet, so that the sealing effect of exerting the sealing force on the valve clack is achieved. When the valve rod is opened, the valve rod rotates to drive the opening and closing piece to move upwards, at the moment, the medium flows into the pressure relief hole B from the pressure relief hole A and enters the outlet, the pressure difference between the inlet and the outlet of the valve is reduced, and the valve rod continuously moves upwards to drive the main valve flap and the auxiliary valve flap to move upwards so as to open the valve by using smaller starting and closing force. In the process, the opening and closing moment is greatly reduced under the action of the auxiliary valve clack and the pressure relief hole;
2. the self-sealing valve cover, the self-sealing ring, the four open rings and the containment ring are placed in the middle cavity of the valve body. The self-sealing ring is matched with the self-sealing valve cover with an angle by adopting a wedge-shaped sealing principle, the four open rings are arranged in the valve body and pressed at the upper end of the self-sealing ring, and the upper ends of the four open rings are connected with the self-sealing cover into a whole by the restraining ring through bolts and nuts. When cavity pressure rose in the valve body, medium pressure promoted self-sealing valve gap drive from the sealing washer rebound and four ring-opening terminal surfaces form a pretightning force, and the higher pretightning force of pressure is bigger, and sealed effect is better. When the pressure of the valve body is reduced, the pretightening force of the self-sealing valve cover and the self-sealing ring is given by the bolts (the studs and the nuts) on the restraining ring, so that the low-pressure sealing is realized, and the high-pressure and low-pressure sealing performance is good.
Drawings
FIG. 1 is a front sectional view of the present invention;
fig. 2 is an enlarged side sectional structure view of the point a in fig. 1 of the present invention.
In the figure: 1. a valve body; 2. a main valve flap; 3. an auxiliary valve flap; 4. the valve clack is pressed and covered; 5. a valve stem; 6. a self-sealing valve cover; 7. a self-sealing ring; 8. opening a ring at four times; 9. a containment ring; 10. a valve stem nut; 11. a hand wheel; 12. a bolt; 13. and (3) a bracket.
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, the present invention provides a technical solution: a super zero boundary high temperature and high pressure shut off valve comprising: when the high-temperature and high-pressure stop valve with the ultra-zero boundary is used, the lower end of the valve rod 5 is connected with the auxiliary valve clack 3, the upper end of the valve rod penetrates through the valve rod nut 10, the valve rod nut 10 is connected with the hand wheel 11 in a matched mode, and the functions of clockwise closing and anticlockwise opening are achieved through the driving of the hand wheel 11.
A movable opening and closing part is formed by a main valve flap 2, an auxiliary valve flap 3, a valve flap gland 4 and a valve rod 5 and is designed into a high-inlet low-position structure, the valve rod 5 is driven by a hand wheel 11 when the valve is closed, at the moment, the valve rod 5 moves downwards, a sealing surface of the main valve flap 2 is firstly contacted with a sealing surface of a valve body 1, then the auxiliary valve flap 3 is contacted with a sealing surface of the main valve flap 2, sealing force is continuously exerted on the sealing surfaces through the valve rod 5, at the moment, a small amount of leakage or no leakage exists on the sealing surfaces, and because media are high in inlet and low out, the pressure difference between an inlet and an outlet is large, and the sealing effect of exerting the sealing force on the main valve flap 2 is achieved. When the valve rod 5 rotates to drive the opening and closing piece to move upwards, at the moment, the medium flows into the pressure relief hole B from the pressure relief hole A and enters the outlet, the pressure difference between the inlet and the outlet of the valve is reduced, the valve rod 5 continuously moves upwards to drive the main valve clack 2 and the auxiliary valve clack 3 to move upwards, the valve can be opened by using smaller opening and closing force, and in the process, due to the effect of the auxiliary valve clack 3 and the pressure relief hole, the opening and closing moment is greatly reduced.
A self-sealing valve cover 6, a self-sealing ring 7, a four-open ring 8 and a restraining ring assembly 9 are arranged in the middle cavity of the valve body 1. The self-sealing ring 7 is matched with the self-sealing valve cover 6 with an angle by adopting a wedge-shaped sealing principle, the four-open ring 8 is arranged in the valve body 1 and pressed at the upper end of the self-sealing ring 7, and the upper end of the four-open ring 8 is connected with the self-sealing valve cover 6 into a whole by the restraining ring 9 through the bolt 12 and the nut. When the cavity pressure in the valve body 1 rises, the medium pressure pushes the self-sealing valve cover 6 to drive the self-sealing ring 7 to move upwards to form a pretightening force with the end face of the four-open ring 8, and the higher the pressure is, the larger the pretightening force is, and the better the sealing effect is. When the pressure of the valve body 1 is reduced, the self-sealing valve cover 6 and the self-sealing ring 7 are pre-tightened by the bolt 12 stud and the nut on the restraining ring 9 to achieve low-pressure sealing and high-low-pressure excellent sealing performance, and the whole working process of the ultra-zero-boundary high-temperature and high-pressure stop valve is realized.
Those not described in detail in this specification are within the skill of the art. The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.
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 may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (4)
1. A high temperature and high pressure stop valve with a super zero boundary, which is characterized by comprising:
a valve body (1);
the main valve flap (2) is arranged on the bottom side inside the valve body (1);
the auxiliary valve clack (3), the auxiliary valve clack (3) is arranged on the top of the main valve clack (2);
the valve rod (5) penetrates through the valve body (1), and the outer side of the top of the valve rod (5) is of a sawtooth structure;
the top of the hand wheel (11) is connected with the hand wheel (11) through gear transmission;
the valve rod (5) is fixedly connected with the support (13) through the valve rod nut (10);
the top of the valve body (1) is fixedly provided with the support (13) through a screw rod.
2. The high-temperature and high-pressure stop valve with the ultra-zero boundary as claimed in claim 1, wherein: a valve clack gland (4) is installed on the inner side of the top of the auxiliary valve clack (3), and a valve rod (5) is tightly attached to the inner side of the valve clack gland (4);
the bottom end of the valve rod (5) is connected with the inner side of the auxiliary valve clack (3) in a clamping mode.
3. The high-temperature and high-pressure stop valve with the ultra-zero boundary as claimed in claim 1, wherein: a self-sealing valve cover (6) is arranged in the valve body (1), and the self-sealing valve cover (6) is sealed with the valve body (1) through a self-sealing ring (7);
wherein, a valve rod (5) penetrates through the inner side of the self-sealing valve cover (6).
4. A high temperature and high pressure ultra-zero cutoff valve as claimed in claim 3 wherein: four open rings (8) are arranged on the outer side of the self-sealing valve cover (6), and a restraining ring (9) installed on the outer side of the self-sealing valve cover (6) is arranged above the four open rings (8);
wherein, the restraining ring (9) is fixedly connected with the self-sealing valve cover (6) through a bolt (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220621870.0U CN218236165U (en) | 2022-03-21 | 2022-03-21 | Ultra-zero-boundary high-temperature and high-pressure stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220621870.0U CN218236165U (en) | 2022-03-21 | 2022-03-21 | Ultra-zero-boundary high-temperature and high-pressure stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218236165U true CN218236165U (en) | 2023-01-06 |
Family
ID=84662355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220621870.0U Active CN218236165U (en) | 2022-03-21 | 2022-03-21 | Ultra-zero-boundary high-temperature and high-pressure stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218236165U (en) |
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2022
- 2022-03-21 CN CN202220621870.0U patent/CN218236165U/en active Active
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