CN111963731B

CN111963731B - Automatic exhaust device

Info

Publication number: CN111963731B
Application number: CN202010619587.XA
Authority: CN
Inventors: 张进; 史凤华; 刘文芳; 汪钰辉; 李志静; 李娜娜; 赵莹芳; 李贺强; 丁学姣; 杨文花
Original assignee: China Nuclear Power Engineering Co Ltd
Current assignee: China Nuclear Power Engineering Co Ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2022-07-01
Anticipated expiration: 2040-07-01
Also published as: CN111963731A

Abstract

The invention discloses an automatic exhaust device, comprising: the casing is provided with casing entry, casing export on the casing, and automatic exhaust apparatus still includes: the linkage assembly is used for forming a lever linkage mechanism with the second switch piece, and the linkage assembly is used for closing the shell outlet by the lever linkage of the second switch piece under the pressure action of water. The automatic exhaust device is reliable and easy to operate, can automatically exhaust air, has good sealing effect, can effectively exhaust air for the dry pipe network or the container, does not need personnel intervention, and does not influence the water filling time of the dry vertical pipe when exhausting air for the dry vertical pipe; the radioactive wastewater leakage prevention device is used in a nuclear power station control area, and can prevent radioactive wastewater from overflowing if leakage occurs, so that subsequent radioactive wastewater cleaning is facilitated.

Description

Automatic exhaust device

Technical Field

The invention belongs to the technical field of automatic exhaust, and particularly relates to an automatic exhaust device.

Background

In the prior art, a dry type fire hydrant vertical pipe in a reactor type nuclear power station is not provided with an automatic exhaust device generally, and when the dry type vertical pipe needs to be used, an isolation valve needs to be opened firstly to fill water into a dry type pipeline, and meanwhile, manual exhaust is carried out. The manual venting mode requires human intervention and can affect the time for filling the dry riser with water.

A buoyancy type automatic exhaust device common in civil technology has the advantage that when the device is in water passing, buoyancy is increased, and a floater floats to a port to achieve an isolation effect. The sealing effect of the mode is general, and radioactive wastewater overflows if leakage occurs in a nuclear power station control area, so that the subsequent radioactive wastewater cleaning work is very troublesome.

Disclosure of Invention

The technical problem to be solved by the invention is to provide an automatic exhaust device aiming at the defects in the prior art, which is reliable and easy to implement, can automatically exhaust air, has good sealing effect and can effectively exhaust air for a dry pipe network or a container.

The technical scheme adopted for solving the technical problem of the invention is to provide an automatic exhaust device, which comprises: the casing is provided with casing entry, casing export on the casing, and automatic exhaust apparatus still includes: the linkage assembly is used for forming a lever linkage mechanism with the second switch piece, and the linkage assembly is used for closing the shell outlet by the lever linkage of the second switch piece under the pressure action of water.

When the linkage assembly is not under the pressure of water, the second switch piece keeps an opening state, and the shell outlet is in an opening state.

Preferably, the linkage assembly includes: the linkage assembly comprises a lever support and a lever rotating around the lever support, wherein the lever comprises a lever body, a containing part arranged at one end of the lever body and used for containing water flowing from an inlet of the shell, and a counterweight part arranged at the other end of the lever body; when the accommodating part accommodates water with a preset volume, the pressure of the water enables the lever body to turn to the accommodating part, so that the second switch part closes the outlet of the shell.

Preferably, the receiving portion is a concave groove provided on the lever body.

Preferably, the automatic exhaust apparatus further includes: and a guide member for guiding the water flowing in from the inlet of the housing to the receiving portion.

Preferably, the flow guide member is a flow guide plate or a flow guide pipe.

Preferably, one end of the connecting rod is hinged with the lever body, and the other end of the connecting rod is hinged with the second switch member.

Preferably, the automatic exhaust apparatus further includes: the clamping pieces are arranged in the second switch piece and the shell and matched with each other, and the second switch piece is kept in a closed shell outlet state through clamping of the clamping pieces.

Preferably, the second switch spare is the valve, and the valve includes valve body and the valve clack of being connected with valve body, and joint spare includes: the clamping block is arranged on the valve clack and the clamping groove is arranged on the shell, and after the second switch piece is closed, the clamping block is clamped in the clamping groove to keep the closing state of the valve clack.

Preferably, the first switch member is a one-way valve or a one-way flapper.

Preferably, the second switch is a baffle, one end of the baffle is hinged with the shell, the other end of the baffle is connected with the linkage assembly, and the linkage assembly is covered by the lever linkage baffle under the pressure action of water to close the outlet of the shell.

The automatic exhaust device is reliable and easy to operate, can automatically exhaust air, has good sealing effect, can effectively exhaust air for the dry pipe network or the container, does not need personnel intervention, and does not influence the water filling time of the dry vertical pipe when exhausting air for the dry vertical pipe; the device is used in a nuclear power station control area, and if leakage occurs, radioactive wastewater can be prevented from overflowing, so that subsequent radioactive wastewater can be cleaned conveniently.

Drawings

FIG. 1 is a schematic structural view of an automatic exhaust apparatus in embodiment 2 of the invention;

fig. 2 is a schematic structural view of an automatic exhaust apparatus in embodiment 2 of the present invention.

In the figure: 1-a housing inlet; 2-a first switching piece; 3-a flow guide plate; 4-a housing; 5-a lever support; 6-a counterweight; 7-a connecting rod; 8-a second switching member; 9-a card slot; 10-a housing outlet; 11-a housing; 12-a lever body; 13-a flow guide pipe.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

Example 1

The present embodiment provides an automatic exhaust apparatus, including: the casing is provided with casing entry, casing export on the casing, and automatic exhaust apparatus still includes: the linkage assembly is used for forming a lever linkage mechanism with the second switch piece, and the linkage assembly is used for closing the shell outlet by the lever linkage of the second switch piece under the pressure action of water.

The automatic exhaust device in the embodiment is reliable and easy to implement, can automatically exhaust air, has a good sealing effect, can effectively exhaust air for a dry pipe network or a container, does not need personnel intervention, and does not influence the water filling time of the dry vertical pipe when exhausting air for the dry vertical pipe; the device is used in a nuclear power station control area, and if leakage occurs, radioactive wastewater can be prevented from overflowing, so that subsequent radioactive wastewater can be cleaned conveniently.

Example 2

As shown in fig. 1, the present embodiment provides an automatic exhaust apparatus including: casing 11, be provided with casing entry 1, casing export 10 on the casing 11, automatic exhaust apparatus still includes: the water-saving device comprises a first switch part 2 arranged at a shell inlet 1 and used for opening and closing the shell inlet 1, a second switch part 8 arranged at a shell outlet 10 and used for opening and closing the shell outlet 10, and a linkage assembly used for forming a lever linkage mechanism with the second switch part 8, wherein the linkage assembly is linked with the second switch part 8 through a lever under the pressure action of water to close the shell outlet 10.

When the linkage assembly is not subjected to water pressure, the second switch member 8 remains open and the housing outlet 10 is open.

The first shutter 2 is normally kept in a closed state, and the housing inlet 1 is in a closed state, preventing the circulation of outside air. When the device is exhausted or drained, the first switch member 2 is opened by pressure.

The shell inlet 1 is an inlet for water and gas, and the shell inlet 1 is connected with equipment or a pipe network needing exhaust. Preferably, the housing inlet 1 is connected to a dry pipe network or vessel.

Specifically, the automatic exhaust device in this embodiment exhausts when the dry pipe network or the container is filled with water.

Preferably, the linkage assembly includes: the linkage assembly comprises a lever support 5 and a lever rotating around the lever support 5, wherein the lever comprises a lever body 12, a containing part 4 arranged at one end of the lever body 12 and used for containing water flowing from a shell inlet 1, and a counterweight part 6 arranged at the other end of the lever body 12, the linkage assembly further comprises a connecting rod 7 connected with the end of the lever body 12 where the counterweight part 6 is located, the connecting rod 7 is further connected with a second switch part 8, when no water exists in the containing part 4, the lever body 12 deviates to the counterweight part 6 under the action of the counterweight part 6, the second switch part 8 keeps an open state, and a shell outlet 10 is in an open state; when a predetermined volume of water is contained in the containing portion 4, the pressure of the water causes the lever body 12 to turn toward the containing portion 4, so that the second switching member 8 closes the housing outlet 10. The lever is connected with the second switch part 8 through a connecting rod 7, and the switch of the second switch part 8 is controlled through a linkage assembly. The second switch 8 controls the opening and closing of the outlet 10 of the shell, realizes the automatic exhaust function and prevents the water flow from overflowing.

The lever support 5 is a lever support point, and a proper position is selected to realize a lever function. Specifically, the weight portion 6 in this embodiment is a weight rod, and the weight rod is a component of a lever.

Preferably, the receiving portion 4 is a concave groove provided on the lever body 12.

Preferably, the automatic exhaust apparatus further includes: and a guide member for guiding the water flowing in from the housing inlet 1 to the receiving portion 4.

The flow guide member changes the direction of water flowing into the housing 11 from the housing inlet 1, and the water flows into the concave groove after flowing.

The catchment area of the accommodating part 4 is at least the preset volume of water, and the water flowing into the accommodating part 4 is the preset volume, so that the counterweight function is realized, and the balance of the original lever is broken.

Preferably, the flow guide is a flow guide plate 3.

Preferably, one end of the connecting rod 7 is hinged with the lever body 12, and the other end of the connecting rod 7 is hinged with the second switch member 8.

Preferably, the automatic exhaust apparatus further includes: set up in second switch 8 and the casing 11 in the joint spare of mutually supporting, the joint that makes second switch 8 keep closing casing export 10 state through the joint of joint spare.

Preferably, the second switch 8 is a valve, the valve includes a valve body and a valve flap connected to the valve body, and the clamping member includes: the clamping block is arranged on the valve clack, the clamping groove 9 is arranged on the shell 11, and after the second switch piece 8 is closed, the clamping block is clamped in the clamping groove 9 to keep the closing state of the valve clack.

After the second switch member 8 is closed, the automatic exhaust device is manually restored to the initial state from the housing outlet 10: when the linkage assembly is not subjected to the pressure of water, the second switching element 8 is kept in an open state, and the housing outlet 10 is in an open state.

Preferably, the first switch member 2 is a one-way valve or a one-way flapper.

Preferably, the second switch member 8 is a baffle, one end of the baffle is hinged to the housing 11, the other end of the baffle is connected to the linkage assembly, and the linkage assembly is closed to close the housing outlet 10 under the pressure of water through the lever linkage baffle.

The housing 11 is intended to ensure the integrity of the automatic venting device at the design pressure.

Specifically, the first switch member 2 in this embodiment is a one-way baffle, and the one-way baffle can only be opened towards the inside of the housing 11, and can be opened when the dry pipe network or the container device connected to the housing inlet 1 bears pressure, thereby ensuring that external air cannot enter the dry pipe network or the container device. The dry pipe network or the container equipment connected with the shell inlet 1 is changed from a dry type to a wet type, water flows enter the dry pipe network or the container equipment to compress internal air, firstly, pressure-bearing gas enters the automatic exhaust device through the shell inlet 1 and is discharged through the shell outlet 10, when the gas is exhausted, the water flows enter the shell inlet 1 and enters the accommodating part 4 through the flow guide piece, the counter weight is realized by accumulated water in the accommodating part 4, the original balance of the lever is broken, the lever sinks towards one end of a lever body 12 where the accommodating part 4 is located, the counter weight part 6 moves upwards, the second switch piece 8 is controlled to be closed through the connecting rod 7, and the closing function of the shell outlet 10 is realized. In order to avoid the pressure fluctuation from causing the housing outlet 10 to be opened mistakenly after being closed, the clamping groove 9 can be kept in a closed state after the second switch member 8 is closed. After the automatic exhaust device is started, the automatic exhaust device can be manually reset after the operation of the whole system is finished.

Example 3

As shown in fig. 2, the present embodiment provides an automatic exhaust apparatus, which is different from embodiment 2 in that: the flow guide part is a flow guide pipe 13.

It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims

1. An automatic exhaust apparatus, comprising: the casing is provided with casing entry, casing export on the casing, and self-bleeding device still includes: set up in the first switch spare that is used for switching casing entry of casing entry, set up in the second switch spare that is used for switching casing exit of casing exit, be used for forming lever link gear's linkage assembly with second switch spare in the casing exit, the linkage assembly closes the casing exit through lever linkage second switch spare under the pressure effect of water, the linkage assembly includes: the lever support, round lever support pivoted lever, the lever include the lever body, set up in lever body one end and be used for holding the portion of holding by the water that the casing entry flowed in, set up in the counter weight portion of the other one end of lever body, the linkage assembly still includes the connecting rod of being connected with the lever body end at counter weight portion place, the connecting rod still is connected with second switch spare.

2. The automatic exhaust device according to claim 1, wherein when there is no water in the housing, the lever body is biased toward the weight portion by the weight portion, the second switch member is kept in an open state, and the housing outlet is in an open state; when the accommodating part accommodates water with a preset volume, the pressure of the water enables the lever body to turn to the accommodating part, so that the second switch part closes the outlet of the shell.

3. The automatic exhaust device according to claim 2, wherein the receiving portion is a concave groove provided on the lever body.

4. The automatic exhaust apparatus according to claim 2, characterized by further comprising: and a guide member for guiding the water flowing in from the inlet of the housing to the receiving portion.

5. The automatic exhaust device according to claim 4, wherein the flow guide member is a flow guide plate or a flow guide tube.

6. The automatic exhaust device according to claim 2, wherein one end of the connecting rod is hinged to the lever body, and the other end of the connecting rod is hinged to the second opening and closing member.

7. The automatic exhaust apparatus according to claim 1, further comprising: the clamping pieces are arranged in the second switch piece and the shell and matched with each other, and the second switch piece is kept in a closed shell outlet state through clamping of the clamping pieces.

8. The automatic exhaust device according to claim 7, characterized in that the second switching member is a valve, the valve includes a valve body and a valve flap connected to the valve body, and the engaging member includes: the clamping block is arranged on the valve clack and the clamping groove is arranged on the shell, and after the second switch piece is closed, the clamping block is clamped in the clamping groove to keep the closing state of the valve clack.

9. The automatic exhaust device according to any one of claims 1 to 8, wherein the first switching member is a check valve or a check damper.

10. The automatic exhaust device according to any one of claims 1 to 7, wherein the second switch member is a baffle plate, one end of the baffle plate is hinged to the housing, the other end of the baffle plate is connected to the linkage assembly, and the linkage assembly closes and closes the outlet of the housing through the lever linkage baffle plate under the pressure of water.