CN216045752U

CN216045752U - Nuclear engineering is with novel low airtight valve that leaks

Info

Publication number: CN216045752U
Application number: CN202122753935.5U
Authority: CN
Inventors: 冯焱
Original assignee: University of South China
Current assignee: University of South China
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-03-15
Anticipated expiration: 2031-11-11

Abstract

The utility model discloses a novel low-leakage closed valve device for nuclear engineering, which relates to the technical field of closed valves and comprises a closed box, wherein a valve handle is rotatably arranged above the closed box, a valve core is fixedly arranged at the output end of the valve handle, pressure relief pipes are symmetrically arranged along the central line of the closed box, one end, far away from the closed box, of each pressure relief pipe is welded with a flange plate, a through hole is formed in each flange plate, a fastening bolt is arranged in each through hole, a limiting hole is formed in a bolt handle of each fastening bolt, a spring guide pillar is fixedly arranged in each limiting hole, a nut is meshed with each fastening bolt, and a fixing groove corresponding to each spring guide pillar is formed in each nut.

Description

Nuclear engineering is with novel low airtight valve that leaks

Technical Field

The utility model relates to the technical field of sealing valves, in particular to a novel low-leakage sealing valve for nuclear engineering.

Background

Valves are pipe fittings used to open and close pipes, control flow direction, regulate and control parameters (temperature, pressure and flow) of a transport medium, and are classified into shut-off valves, check valves, regulating valves, and the like according to their functions. The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like.

The Chinese patent with the publication number of CN213512123U discloses a nuclear engineering is with novel low airtight valve that leaks, including valve body, servo motor and valve block, the middle part fixedly connected with of valve body revolves a section of thick bamboo, revolves the inboard rotation of a section of thick bamboo and is connected with the valve block, revolves the front end of a section of thick bamboo and installs servo motor, and servo motor's rear end is installed and is had the transmission shaft with valve block looks mutual drive, revolves the top and the bottom of a section of thick bamboo and all communicates the slide cartridge, and the inboard sliding connection of slide cartridge has the lifter block. According to the utility model, firstly, the closed valve block can be further limited and sealed by adopting the opposite sealing structure, so that the generation of a connecting gap between the valve block and the valve body is reduced, and the integral sealing effect of the sealed valve is improved.

However, the existing closed valve for nuclear engineering is usually fixed by bolts, but the impact force through the closed valve in the nuclear engineering is large, so that the bolts are loosened, the joints need to be frequently overhauled, the safety is low, and the labor intensity of workers is increased.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel low-leakage airtight valve for nuclear engineering, which solves the technical problems that the existing airtight valve for the nuclear engineering is usually fixed by bolts, but the bolts are loosened due to large impact force of the airtight valve in the nuclear engineering, the joints need to be frequently overhauled, the safety is low, and the labor intensity of workers is increased.

In order to solve the technical problems, the utility model provides a novel low-leakage closed valve for nuclear engineering, which comprises a closed box, wherein a valve handle is rotatably arranged above the closed box, a valve core is fixedly arranged at the output end of the valve handle, a limiting cylinder is symmetrically welded on the closed box along a central line, an electromagnet is fixedly arranged in the middle of the limiting cylinder, the electromagnet is electrically connected with an external power supply, a reset spring is symmetrically arranged on the limiting cylinder along the electromagnet, a sealing post is fixedly arranged at the other end of the reset spring, a limiting plate is fixedly arranged at one end of the sealing post, which is far away from the reset spring, a limiting groove is formed in the limiting plate, the limiting groove is clamped with the valve core, a pressure relief pipe is symmetrically arranged on the closed box along the central line, a flange plate is welded at one end of the pressure relief pipe, which is far away from the closed box, a through hole is formed in the flange plate, and a fastening bolt is arranged in the through hole, the bolt handle of the fastening bolt is provided with a limiting hole, a spring guide pillar is fixedly mounted in the limiting hole, the fastening bolt is meshed with a nut, and a fixing groove corresponding to the spring guide pillar is formed in the nut.

Preferably, the outer diameter of the sealing column is consistent with the inner diameter of the limiting cylinder, and the sealing column is excessively matched with the limiting cylinder.

Preferably, the number of the spring guide columns is two, the two spring guide columns are arranged on the upper side and the lower side of the fastening bolt respectively, and the two spring guide columns are arranged in a staggered mode.

Preferably, the through-hole is equipped with four, and four protect the through-hole equidistance respectively arrange in the outside surface of ring flange.

Preferably, the middle position of the valve handle is processed with an external thread, a threaded hole is formed in the upper portion of the sealed box, and the valve handle is meshed with the sealed box through the threaded hole.

Compared with the related art, the novel low-leakage airtight valve for the nuclear engineering provided by the utility model has the following beneficial effects:

the utility model provides a novel low-leakage sealed valve for nuclear engineering, which is characterized in that during installation, firstly, flange plates are aligned to flange plates arranged on a pipeline to be connected, through holes on the two flange plates are mutually corresponding, fastening bolts are inserted into the through holes, nuts are sleeved on the fastening bolts, nuts are screwed, the nuts are rotatably engaged on the fastening bolts, when the front ends of the nuts move to the positions of spring guide pillars, the spring guide pillars are pressed to enter the nuts, the nuts are continuously rotated, when fixed grooves on the nuts correspond to the spring guide pillars, the spring guide pillars are popped out and enter the fixed grooves, the two flange plates are fixed by the fastening bolts and the nuts, the installation of the sealed valve is further completed, the two spring guide pillars are installed in a staggered mode and are matched with the fixed nuts, the nuts can be limited left and right, and looseness between the fastening bolts and the nuts due to overlarge impact force is avoided, and then lead to the leakage of airtight box, improved connection stability, need not frequent maintenance, reduce operating personnel's intensity of labour, improve the safety in utilization.

Drawings

FIG. 1 is a block diagram of a new low leakage containment valve for nuclear engineering;

FIG. 2 is a structural diagram of a sealing box in a novel low-leakage sealing valve for nuclear engineering;

FIG. 3 is a structural diagram of a fastening bolt in a novel low-leakage airtight valve for nuclear engineering;

fig. 4 is a structure diagram of a nut in a novel low-leakage airtight valve for nuclear engineering.

Reference numbers in the figures: 1. the sealing device comprises a sealing box, 2, a limiting cylinder, 3, a valve handle, 4, a pressure relief pipe, 5, a fastening bolt, 6, a nut, 7, a flange plate, 8, a valve core, 9, a limiting plate, 10, a sealing column, 11, an electromagnet, 12, a reset spring, 13, a spring guide column, 14 and a fixing groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a novel low-leakage sealed valve for nuclear engineering comprises a sealed box 1, a valve handle 3 is rotatably arranged above the sealed box 1, a valve core 8 is fixedly arranged at the output end of the valve handle 3, a limiting cylinder 2 is symmetrically welded on the sealed box 1 along a central line, an electromagnet 11 is fixedly arranged at the middle position of the limiting cylinder 2, the electromagnet 11 is electrically connected with an external power supply, a return spring 12 is symmetrically arranged on the limiting cylinder 2 along the electromagnet 11, a sealing post 10 is fixedly arranged at the other end of the return spring 12, a limiting plate 9 is fixedly arranged at one end of the sealing post 10 far away from the return spring 12, a limiting groove is arranged on the limiting plate 9 and is clamped with the valve core 8, a pressure relief pipe 4 is symmetrically arranged on the sealed box 1 along the central line, a flange 7 is welded at one end of the pressure relief pipe 4 far away from the sealed box 1, a through hole is arranged on the flange 7, a fastening bolt 5 is arranged in the through hole, a limiting hole is arranged on a bolt handle of the fastening bolt 5, a spring guide post 13 is fixedly arranged in the limiting hole, a nut 6 is meshed on the fastening bolt 5, and a fixing groove 14 corresponding to the spring guide post 13 is arranged in the nut 6

In this embodiment, during installation, first, the flange 7 is aligned with the flange 7 to be connected to the pipeline, the through holes of the two flanges 7 are made to correspond to each other, the fastening bolt 5 is inserted into the through hole, the nut 6 is sleeved on the fastening bolt 5, the nut 6 is screwed to be engaged with the fastening bolt 5, when the front end of the nut 6 moves to the position of the spring guide post 13, the spring guide post 13 is pressed to enter the nut 6, the nut 6 is continuously rotated, when the fixing groove 14 on the nut 6 corresponds to the spring guide post 13, the spring guide post 13 is ejected out and enters the fixing groove 14, at this time, the fastening bolt 5 and the nut 6 fix the two flanges 7 to complete the installation of the airtight valve, the two spring guide posts 13 are installed in a staggered manner to be matched with the fixing, the nut 6 can be limited left and right, and the looseness between the fastening bolt 5 and the nut 6 due to an excessive impact force is avoided, and then lead to the leakage of airtight box 1, improved connection stability, need not frequent maintenance, reduce operating personnel's intensity of labour, improve the safety in utilization.

Further, the external diameter of sealed post 10 is unanimous with the internal diameter of a spacing section of thick bamboo 2, and sealed post 10 excessively cooperates with a spacing section of thick bamboo 2, and the external diameter through sealed post 10 is unanimous with a spacing section of thick bamboo 2's internal diameter, and sealed post 10 excessively cooperates with a spacing section of thick bamboo 2, improves spacing section of thick bamboo 2's gas tightness, avoids taking place to leak because a spacing section of thick bamboo 2.

Further, spring guide posts 13 are provided with two, and two spring guide posts 13 are arranged on the upper and lower sides of fastening bolt 5 respectively, and two spring guide posts 13 are arranged in a staggered manner, so that the connection stability is improved.

Furthermore, four through holes are arranged, and the four protected through holes are respectively arranged on the outer side surface of the flange plate 7 at equal intervals.

Further, the middle position of valve handle 3 is processed there is the external screw thread, and 1 tops of airtight box are seted up threaded hole, and valve handle 3 passes through the screw hole and meshes in airtight box 1.

The working principle is as follows:

firstly, aligning a flange plate 7 to a flange plate 7 arranged on a pipeline to be connected, enabling through holes on the two flange plates 7 to correspond to each other, inserting a fastening bolt 5 into the through holes, further sleeving a nut 6 on the fastening bolt 5, screwing the nut 6 to enable the nut 6 to be rotatably engaged on the fastening bolt 5, when the front end of the nut 6 moves to the position of a spring guide post 13, pressing the spring guide post 13 to enable the spring guide post 13 to enter the nut 6, continuing to rotate the nut 6, when a fixed groove 14 on the nut 6 corresponds to the spring guide post 13, the spring guide post 13 pops out and enters the fixed groove 14, at the moment, the fastening bolt 5 and the nut 6 fix the two flange plates 7, further completing the installation of the valve, two spring guide posts 13 are installed in a staggered mode and are matched with the fixed mode, the nut 6 can be limited leftwards and rightwards, and the looseness between the fastening bolt 5 and the nut 6 caused by overlarge impact force is avoided, and then lead to the leakage of airtight box 1, improved connection stability, need not frequent maintenance, reduce operating personnel's intensity of labour, improve the safety in utilization.

Claims

1. The utility model provides a nuclear engineering is with novel low sealed valve that leaks, includes sealed box (1), its characterized in that: the valve handle (3) is installed in the rotation of airtight box (1) top, valve handle (3) output end fixed mounting has case (8), airtight box (1) has spacing section of thick bamboo (2) along central line symmetrical welding, spacing section of thick bamboo (2) middle part position fixed mounting electro-magnet (11), electro-magnet (11) electric connection external power supply, reset spring (12) are installed along electro-magnet (11) symmetry to spacing section of thick bamboo (2), reset spring (12) other end fixed mounting has sealed post (10), the one end fixed mounting that reset spring (12) were kept away from to sealed post (10) has limiting plate (9), the spacing groove has been seted up on limiting plate (9), limiting groove and case (8) joint, airtight box (1) is installed along central line symmetry and is released pressure pipe (4), the welding that airtight box (1) was kept away from to pressure pipe (4) has one end ring flange (7), the spring guide post fixing device is characterized in that a through hole is formed in the flange plate (7), a fastening bolt (5) is arranged in the through hole, a limiting hole is formed in a bolt handle of the fastening bolt (5), a spring guide post (13) is fixedly mounted in the limiting hole, a nut (6) is meshed on the fastening bolt (5), and a fixing groove (14) corresponding to the spring guide post (13) is formed in the nut (6).

2. The novel low-leakage airtight valve for nuclear engineering is characterized in that the outer diameter of the sealing column (10) is consistent with the inner diameter of the limiting cylinder (2), and the sealing column (10) is in over-fit with the limiting cylinder (2).

3. The novel low-leakage airtight valve for nuclear engineering is characterized in that two spring guide columns (13) are arranged, the two spring guide columns (13) are respectively arranged on the upper side and the lower side of a fastening bolt (5), and the two spring guide columns (13) are arranged in a staggered mode.

4. The novel low-leakage airtight valve for nuclear engineering as claimed in claim 1, wherein said through holes are four, and four protected through holes are respectively and equidistantly arranged on the outer side surface of the flange (7).

5. The novel low-leakage airtight valve for nuclear engineering is characterized in that external threads are machined in the middle of the valve handle (3), a threaded hole is formed in the upper portion of the airtight box (1), and the valve handle (3) is meshed with the airtight box (1) through the threaded hole.