CN113357391A

CN113357391A - Pressure vessel drain valve and pressure vessel assembly

Info

Publication number: CN113357391A
Application number: CN202110647819.7A
Authority: CN
Inventors: 不公告发明人
Original assignee: Changsha Qijun Electromechanical Technology Co ltd
Current assignee: Changsha Qijun Electromechanical Technology Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2021-09-07

Abstract

The application relates to the technical field of drainage devices, and provides a pressure vessel drain valve and a pressure vessel assembly, wherein the pressure vessel drain valve comprises a valve body, a valve core and an elastic part arranged on the valve body, a valve cavity is formed inside the valve body, a water inlet and a water outlet are formed in the valve body, the valve core is arranged in the valve cavity in a sliding manner along the axial direction of the valve core, the two ends of the valve core are respectively a first moving end and a second moving end, the water inlet is communicated with the first moving end, the elastic part enables the valve core to be kept at a conducting position through elastic force, and gas entering the water inlet can be applied to the first moving end to enable the valve core to move to a stopping position towards the second moving end; when the valve core is located at the stop position, the water inlet and the water outlet are isolated from each other through the valve core, when the valve core is located at the conduction position, the water inlet and the water outlet are communicated with each other, the pressure vessel drain valve can not be adjusted and operated under high pressure, can be forcibly opened under low pressure, can also be used as an additional part for automatic control, and has excellent safety reliability and flexibility.

Description

Pressure vessel drain valve and pressure vessel assembly

Technical Field

The application relates to the technical field of drainage devices, in particular to a pressure vessel drainage valve and a pressure vessel assembly.

Background

In the prior art, in the recycling process of pressure containers of various gases, impurity liquid or water with large specific gravity exists at the bottom of the containers. Especially in a humid environment, for example 30 degrees celsius, in one cubic meter of air, the absolute content of water may be as high as 30.38 grams. The water content in the compressed air container, such as 5MP, has a volume of 1 cubic volume and reaches 1500 g. Therefore, the gas with high water content has great harm to the corrosion of the inner wall of the container and the valve of the pipeline and the influence on the quality of the conventional process, and is regarded as one of the key factors in the accident potential under the pressure working condition.

The treatment method adopted in the prior art generally comprises the steps of firstly, regularly manually patrolling and manually discharging bottom water (pressure relief is needed on the premise); and secondly, an electric valve is additionally arranged, and automatic program control is adopted to control the discharge. Both methods have disadvantages that the work arrangement must be strictly timed, the operation flow (avoiding operation with high voltage) is established, and the necessary error correction checking system is established; and automatic control needs to be associated with a process flow, the maintenance cost of equipment is increased (the electric valve has more fault points), and the reliability needs to be ensured by additionally arranging hardware.

Disclosure of Invention

The invention mainly aims to provide a pressure vessel drain valve and a pressure vessel assembly, and aims to solve the technical problems of poor safety, complex operation and high equipment maintenance cost of the existing pressure vessel drain method.

In order to achieve the purpose, the invention adopts the technical scheme that: a pressure vessel drain valve comprises a valve body, a valve core and an elastic part arranged on the valve body, wherein a valve cavity is formed inside the valve body, a water inlet and a water outlet which are respectively connected with the valve cavity are formed in the valve body, the valve core is arranged in the valve cavity in a sliding manner along the axial direction of the valve core, the two axial ends of the valve core are respectively a first moving end and a second moving end, the water inlet is communicated with the first moving end, the elastic part enables the valve core to be kept at a conducting position through elastic force, and gas entering the water inlet can be pressed on the first moving end to overcome the elastic force to enable the valve core to move to a stopping position towards the second moving end;

when the valve core is located at the cut-off position, the water inlet and the water outlet are isolated from each other through the valve core, and when the valve core is located at the conduction position, the water inlet and the water outlet are communicated with each other.

Further, the pressure vessel drain valve comprises a forced opening device which is movably arranged on the valve body and can drive the valve core to move from the cut-off position to the conducting position.

Further, the forced opening device is a knob which is in threaded connection with the valve body, one end of the elastic piece abuts against the second moving end, and the other end of the elastic piece abuts against the knob.

Further, the knob includes the knob lid and connect in the regulation pole of knob lid, knob lid threaded connection in the valve body, the valve body still have with the regulation chamber of valve pocket intercommunication, it stretches into to adjust the pole adjust the chamber and towards the second removes the end, the elastic component is established for the cover the spring on the regulation pole.

Furthermore, a conducting structure is arranged on the valve core, and when the valve core is located at the conducting position, the water inlet and the water outlet are communicated with each other through the conducting structure.

Further, the conducting structure is a conducting groove arranged on the side surface of the valve core.

Furthermore, a first sealing ring and a second sealing ring are arranged on the outer side of the valve core, the first sealing ring and the second sealing ring are in sealing contact with the cavity wall of the valve cavity, and the first sealing ring, the conducting structure and the second sealing ring are sequentially arranged at intervals along the axial direction of the valve core.

Furthermore, the elastic part has preset deformation pressure, so that when the pressure of gas entering the water inlet is greater than the preset deformation pressure, the elastic force can be overcome to enable the valve core to move to the stop position.

Furthermore, the first movable end of the valve core forms a convex movable column, the valve body is also provided with a column cavity connected with the valve cavity, the movable column extends from the valve cavity to the column cavity and is in sealing contact with the cavity wall of the column cavity, and the water inlet is communicated with the column cavity through an action channel formed inside the valve body.

In addition, the invention also provides a pressure container assembly which comprises a pressure container with a sewage draining outlet and the pressure container drain valve, wherein the water inlet is connected to the sewage draining outlet.

The application provides a pressure vessel drain valve's beneficial effect lies in:

compared with the prior art, the pressure vessel drain valve of this application, including valve body, case and set up in the elastic component of valve body, the case can be at the stop position and switch on the position between remove, through simple mechanical structure, can realize the drainage to pressure vessel, and all gas pressure vessel, in the recycling, the bottom is accumulative total liquid impurity or moisture, all can use this pressure vessel drain valve to drain water, avoids the loaded down with trivial details process of artifical timing step-down operation. Because no electric element is used for control, the components are completely mechanical parts, the adjustable operation can not be carried out under high voltage, and the forced opening can be carried out under low voltage. The device can also be used as an additional part for automatic control, has excellent safety reliability and flexibility, has better applicability than a conventional timing action device, is simple and convenient to operate, and has low equipment maintenance cost.

In a further scheme, the pressure vessel drainage valve comprises a forced opening device which can forcibly drain the pressure vessel in an emergency.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a cross-sectional view of a pressure vessel drain valve provided in accordance with an embodiment of the present application, with the valve cartridge in a conducting position;

FIG. 2 is a cross-sectional view of a pressure vessel drain valve provided in accordance with an embodiment of the present application, with the valve cartridge in a stop position;

FIG. 3 is a perspective cross-sectional view of a valve body provided in an embodiment of the present application;

fig. 4 is a perspective cross-sectional view of a valve cartridge provided in an embodiment of the present application.

Reference numerals referred to in the above figures are detailed below:

1-an elastic member; 2-a first sealing ring; 3-a second sealing ring; 4-a third sealing ring; 100-a valve body; 101-a valve cavity; 102-a water inlet; 103-a water outlet; 104-a conditioning chamber; 105-column cavity; 106-action channel; 200-a valve core; 201-a first mobile terminal; 202-a second movement; 203-a conducting groove; 204-moving the column; 300-knob; 301-knob cover; 302-adjusting the lever.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In order to explain the technical solutions of the present application, the following detailed descriptions are made with reference to specific drawings and examples.

Referring to fig. 1 to 4, a drain valve for a pressure vessel according to an embodiment of the present invention mainly includes a valve body 100, a valve core 200, an elastic member 1 disposed on the valve body 100, and a forced opening device.

The valve body 100 is internally provided with a valve cavity 101, the valve body 100 is provided with a water inlet 102 and a water outlet 103 which are respectively connected with the valve cavity 101, the valve core 200 is arranged in the valve cavity 101 in a sliding manner along the axial direction of the valve core 200, two axial ends of the valve core 200 are respectively a first moving end 201 and a second moving end 202, the water inlet 102 is communicated with the first moving end 201 through an action channel 106 formed in the valve body 100, the valve core 200 is kept at a conducting position (see fig. 1) through elastic force by the elastic member 1, and gas entering the water inlet 102 can be applied to the first moving end 201 to overcome the elastic force of the elastic member 1 so as to enable the valve core 200 to move to a stopping position (see fig. 2) towards the second moving end 202; when the valve core 200 is located at the stop position, the water inlet 102 and the water outlet 103 are isolated from each other by the valve core 200, specifically, the valve core 200 blocks the position where the water inlet 102 is connected with the valve cavity 101 and blocks the position where the water outlet 103 is connected with the valve cavity 101, when the valve core 200 is located at the conduction position, the water inlet 102 and the water outlet 103 are communicated with each other, and the forcible opening device is movably installed on the valve body 100 and can drive the valve core 200 to move from the stop position to the conduction position.

This pressure vessel drain valve is fit for matching to the pressure vessel of various gases, make the water inlet 102 of this pressure vessel drain valve be connected with pressure vessel's drain, because elastic component 1 makes case 200 keep in the conducting position through elastic force, make pressure vessel's drain exhaust water can be discharged through water inlet 102 and delivery port 103, thereby can conveniently be to pressure vessel drainage under the low pressure, when pressure vessel steps up, can overcome elastic force in first removal end 201 through the gaseous pressure application that gets into in water inlet 102 again and make case 200 remove to the ending position towards second removal end 202, so that water inlet 102 and delivery port 103 are isolated each other through case 200, thereby stop the drainage. In case of emergency, the valve plug 200 can be driven by the manually controlled forced opening device to drain the pressure vessel, but the valve plug is not limited to the manually controlled forced opening device, and can be replaced by an electrically controlled manner.

It can be understood that the elastic member 1 may have a preset deformation pressure, so that when the pressure of the gas entering the water inlet 102 is greater than the preset deformation pressure, the valve element 200 can be moved to the stop position by overcoming the elastic force, and if the pressure of the gas entering the water inlet 102 is less than or equal to the preset deformation pressure, the valve element 200 cannot be driven to move by overcoming the elastic force of the elastic member 1, so that the water discharge function of the water discharge valve of the pressure vessel can be closed when the preset deformation pressure is higher than the preset deformation pressure; the water discharging function is started under a preset deformation pressure, which may be set to 0.4MP, that is, when the pressure of the gas entering the water inlet 102 is less than 0.4MP, the elastic element 1 keeps the valve element 200 at the conducting position, but the preset deformation pressure is not limited to be set to 0.4MP, for example, to smaller 0.2MP, 0.3MP or to larger 0.5MP, 0.6MP, according to the actual operation requirement.

Referring to fig. 1 and 2, according to an embodiment of the present invention, the forcible opening means is a knob 300 threadedly coupled to the valve body 100, one end of the elastic member 1 abuts against the second moving end 202 of the valve cartridge 200, so that the valve cartridge 200 can be pressed toward the first moving end 201 to a conduction position by elastic pressure, and the other end of the elastic member 1 abuts against the knob 300. Specifically, the knob 300 may include a knob cover 301 and an adjusting rod 302 connected to the knob cover 301, the adjusting rod 302 is perpendicular to the knob cover 301, the knob cover 301 is screwed to the valve body 100, the sealing property between the knob cover 301 and the valve body 100 should be ensured, the valve body 100 further has an adjusting cavity 104 communicated with the valve cavity 101, the adjusting rod 302 extends into the adjusting cavity 104 and faces the second moving end 202, the elastic member 1 is a spring sleeved on the adjusting rod 302, one end of the spring abuts against the second moving end 202 of the valve element 200, the other end of the spring abuts against the inner side of the knob cover 301, the knob cover 301 is rotated, the pressure acting on the valve element 200 may be further finely adjusted, and whether the interaction between the spring and the valve element 200 is normal is checked. However, the present invention is not limited to this embodiment, and according to another embodiment of the present invention, the elastic member 1 may act on the first moving end 201 of the valve body 200, for example, a tension spring connected to the first moving end 201 of the valve body 200, and it is also possible to pull the valve body 200 to the conducting position by elastic tension, and the forcible opening device is not limited to the form of the knob 300 screwed to the valve body 100, and may be formed in the form of a push button, and the push button may be slidably mounted on a sliding groove by providing the sliding groove or the like on the valve body 100.

Referring to fig. 1, 2 and 4, according to an embodiment of the present invention, a valve core 200 is provided with a conduction structure, in which a water inlet 102 and a water outlet 103 are communicated with each other through the conduction structure, that is, water discharged from a sewage drain is discharged through the water inlet 102, the conduction structure and the water outlet 103, according to another embodiment of the present invention, the valve core 200 may not be provided with the conduction structure, and in the conduction position, water discharged from the sewage drain is discharged through the water inlet 102, the valve cavity 101 and the water outlet 103 by moving the valve core 200 to a position where the water inlet 102 and the water outlet 103 are not isolated, without passing through the conduction structure of the valve core 200.

Referring to fig. 1, 2 and 4, according to an embodiment of the present invention, the conducting structure is a conducting groove 203 disposed on a side surface of the valve core 200, so that when the valve core 200 is moved to the conducting position, water discharged from the pressure vessel can flow out through the water inlet 102, the conducting groove 203 and the water outlet 103. According to another embodiment of the present invention, the communication structure may also be a drain passage penetrating the valve cartridge 200.

Referring to fig. 1 and 4, according to an embodiment of the present invention, a first sealing ring 2 and a second sealing ring 3 are disposed on an outer side of a valve core 200, the first sealing ring 2 and the second sealing ring 3 are both in sealing contact with a cavity wall of a valve cavity 101 to ensure airtightness of a fit between the valve core 200 and the valve body 100, and the first sealing ring 2, the conducting structure, and the second sealing ring 3 are sequentially disposed at intervals along an axial direction of the valve core 200, according to another embodiment of the present invention, more sealing rings may be further disposed on an outer side of the valve core 200.

Referring to fig. 1 to 3, according to an embodiment of the present invention, the water inlet 102, the valve chamber 101 and the water outlet 103 are sequentially arranged from top to bottom, so that the water discharged from the pressure vessel naturally flows out by gravity, but the present invention is not limited to this embodiment, and as another embodiment, even if the water inlet 102, the valve chamber 101 and the water outlet 103 are not sequentially arranged from top to bottom, it is possible to sequentially drain the water from the water inlet 102, the valve chamber 101 and the water outlet 103 by using other suitable devices.

Referring to fig. 1, 2 and 4, according to an embodiment of the present invention, the first moving end 201 of the valve core 200 forms a protruding moving column 204, the valve body 100 further has a column cavity 105 connected to the valve cavity 101, the moving column 204 extends from the valve cavity 101 to the column cavity 105 and is in sealing contact with the cavity wall of the column cavity 105, a third sealing ring 4 may be disposed on the outer periphery of the moving column 204 to achieve sealing contact between the moving column 204 and the cavity wall of the column cavity 105, the water inlet 102 is communicated with the column cavity 105 through an action channel 106 formed inside the valve body 100, and then the gas entering from the water inlet 102 enters the column cavity 105 through the action channel 106 and is applied to the moving column 204, according to another embodiment of the present invention, the moving column 204 and the column cavity 105 may not be disposed, i.e., the gas entering from the water inlet 102 is directly applied to the first moving end 201 of the valve core 200 through the action channel 106.

In addition, the invention also provides a pressure container assembly, which comprises a pressure container with a sewage draining outlet and the pressure container drain valve, wherein the water inlet 102 is connected to the sewage draining outlet, and the pressure container drain valve can be fixedly installed at the bottom of the pressure container or not fixedly installed with the pressure container, so long as the water inlet 102 of the pressure container drain valve is connected with the sewage draining outlet of the pressure container.

The working principle of the pressure vessel drain valve of the present invention when the water inlet 102 is connected to the sewage outlet of the pressure vessel is described below (taking the preset deformation pressure of the elastic member 1 as 0.4MP as an example for explanation):

1. referring to fig. 1, a valve core 200 in a pressure vessel drain valve is kept at a conducting position under the elastic force of an elastic element 1, when the pressure vessel is boosted, gas in the pressure vessel enters a water inlet 102 of the pressure vessel drain valve and reaches a first moving end 201 of the valve core 200 through an acting passage 106, and air pressure acts on the first moving end 201 of the valve core 200; a part of the gas reaches the drain port through the conduction groove 203 of the valve body 200 and is discharged to the outside.

2. Referring to fig. 2, when the pressure of the gas reaching the first moving end 201 of the valve core 200 exceeds 0.4MP, the elastic member 1 is compressed, the valve core 200 moves to the right (i.e. moves towards the second moving end 202 of the valve core 200), the valve core 200 moves to the stop position against the elastic force of the elastic member 1, the water inlet 102 and the water outlet 103 are isolated from each other, and the pressure vessel is maintained at the working pressure (much greater than 0.4 MP).

3. Referring to fig. 1, when the internal air pressure of the pressure vessel is reduced to 0.4MP at any time, the elastic member 1 pushes the valve core 200 to move to the left (i.e. towards the first moving end 201 of the valve core 200), the valve core 200 is in the conducting position, and accumulated water at the bottom of the vessel reaches the drain valve of the pressure vessel of the drain port through the water inlet 102 and the conducting groove 203 under the action of low pressure, and is automatically discharged to the outside. Until the air pressure is completely relieved, the bleed passage remains in communication (i.e., the water inlet 102 and the water outlet 103 remain in communication with each other).

4. Referring to fig. 2, the next time the pressure vessel is pressurized to 0.4MP, the valve cartridge 200 is again moved to the right to the off position, closing the bleed passage (i.e., the water inlet 102 and the water outlet 103 are isolated from each other).

Supplementary explanation: the drainage function of the drainage valve of the pressure container is closed when the internal air pressure of the pressure container is above 0.4MP all the time; when the internal air pressure of the pressure container is below 0.4MP, the drainage function is started. In addition, in emergency, the valve core 200 can be driven by the manual control forced opening device to perform forced drainage, which is also an important special function of the drainage valve of the pressure vessel of the present invention. In addition to the above-mentioned first sealing ring 2, second sealing ring 3 and third sealing ring 4, necessary sealing parts can be arranged among related parts in the water discharge valve of the pressure vessel, so that the reliability of pneumatic action is ensured.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pressure vessel drain valve is characterized by comprising a valve body, a valve core and an elastic part arranged on the valve body, wherein a valve cavity is formed inside the valve body, a water inlet and a water outlet which are respectively connected with the valve cavity are formed in the valve body, the valve core is arranged in the valve cavity in a sliding manner along the axial direction of the valve core, the two axial ends of the valve core are respectively a first moving end and a second moving end, the water inlet is communicated with the first moving end, the elastic part enables the valve core to be kept at a conducting position through elastic force, and gas entering the water inlet can be pressed on the first moving end to overcome the elastic force to enable the valve core to move to a stopping position towards the second moving end;

2. The pressure vessel drain valve of claim 1 comprising a forced opening device movably mounted to the valve body and capable of actuating the valve cartridge to move from the off position to the on position.

3. The pressure vessel drain valve according to claim 2, wherein the forced opening means is a knob threadedly connected to the valve body, one end of the elastic member abuts against the second movable end, and the other end of the elastic member abuts against the knob.

4. The drain valve for the pressure vessel as claimed in claim 3, wherein the knob comprises a knob cover and an adjusting rod connected to the knob cover, the knob cover is threadedly connected to the valve body, the valve body further has an adjusting cavity communicated with the valve cavity, the adjusting rod extends into the adjusting cavity and faces the second moving end, and the elastic member is a spring sleeved on the adjusting rod.

5. The pressure vessel drain valve according to any one of claims 1 to 4, wherein a conducting structure is provided on the valve element, and when the valve element is located at the conducting position, the water inlet and the water outlet are communicated with each other through the conducting structure.

6. The pressure vessel drain valve of claim 5 wherein the conduction structure is a conduction groove disposed in a side surface of the valve spool.

7. The pressure vessel drain valve according to claim 5, wherein a first sealing ring and a second sealing ring are arranged on the outer side of the valve core, the first sealing ring and the second sealing ring are both in sealing contact with the cavity wall of the valve cavity, and the first sealing ring, the conducting structure and the second sealing ring are sequentially arranged at intervals along the axial direction of the valve core.

8. The pressure vessel drain valve according to any one of claims 1 to 4, wherein the elastic member has a preset deformation pressure, so that when the pressure of the gas entering the water inlet is greater than the preset deformation pressure, the valve element can be moved to the stop position against the elastic force.

9. The pressure vessel drain valve according to any one of claims 1 to 4, wherein the first movable end of the valve core forms a projecting movable post, the valve body further has a post chamber connected to the valve chamber, the movable post extends from the valve chamber to the post chamber and is in sealing contact with a wall of the post chamber, and the water inlet is communicated with the post chamber through a service passage formed inside the valve body.

10. A pressure vessel assembly comprising a pressure vessel having a waste outlet and a pressure vessel drain valve according to any one of claims 1 to 9, the water inlet being connected to the waste outlet.