CN217898754U - Pressure vessel - Google Patents

Abstract

The application provides a pressure supply container, which comprises a liquid storage tank, a liquid level detection container, an air pressure balance pipeline and a liquid circulation pipeline; the liquid storage tank is provided with a first accommodating cavity and comprises a first air pressure balancing port and a first liquid flow port, and the first air pressure balancing port is positioned above the first liquid flow port; the liquid level detection container is provided with a second accommodating cavity and comprises a second air pressure balance port and a second liquid circulation port, and the second air pressure balance port is positioned above the second liquid circulation port; the air pressure balance pipeline is connected with the first air pressure balance port and the second air pressure balance port and is used as a channel for air circulation between the first accommodating cavity and the second accommodating cavity; the liquid circulation pipeline is connected with the first liquid circulation port and the second liquid circulation port and used as a channel for liquid circulation between the first accommodating cavity and the second accommodating cavity. The application provides a pressure vessel, simple structure, and be favorable to improving the inside liquid level height measurement's of pressure vessel accuracy.

Description

Pressure vessel

Technical Field

The application relates to the technical field of chemical material storage, in particular to a pressure container.

Background

Batteries are widely used in electronic devices such as mobile phones, notebook computers, battery cars, electric automobiles, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, electric tools, and the like.

In the production process of the battery, various chemical materials, such as lithium salt materials, etc., are often used, and these chemical materials are often chemically unstable and need to be stored in a specific pressure container. In order to know the real-time situation of the chemical material inside the pressure vessel in real time, it is often necessary to know the liquid level information inside the pressure vessel, and how to accurately measure the liquid level information inside the pressure vessel is a problem that is continuously improved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a pressure vessel, can improve pressure vessel's level measurement's accuracy.

In a first aspect, an embodiment of the present application provides a pressure vessel, where the pressure vessel includes a liquid storage tank, a liquid level detection container, a gas pressure balance pipeline, and a liquid circulation pipeline; the liquid storage tank is provided with a first accommodating cavity and comprises a first air pressure balancing port and a first liquid circulation port, and the first air pressure balancing port is positioned above the first liquid circulation port; the liquid level detection container is provided with a second accommodating cavity and comprises a second air pressure balancing port and a second liquid circulation port, and the second air pressure balancing port is positioned above the second liquid circulation port; the air pressure balance pipeline is connected with the first air pressure balance port and the second air pressure balance port and is used as a channel for air circulation between the first accommodating cavity and the second accommodating cavity; and the liquid circulation pipeline is connected with the first liquid circulation port and the second liquid circulation port and is used as a passage for liquid circulation between the first accommodating cavity and the second accommodating cavity.

The pressure vessel that this application embodiment provided, through setting up the liquid level detection container, and set up atmospheric pressure balance pipeline and liquid circulation pipeline and communicate liquid storage pot and liquid level detection container respectively, liquid level in pressure vessel is when the certain limit, the liquid storage pot, the liquid level detection pipeline, the linker is constituteed jointly to atmospheric pressure balance pipeline and liquid circulation pipeline, the liquid level highly uniform in liquid storage pot and the liquid level detection container, through measuring the liquid level height in the liquid level detection container, can accurately learn the liquid level height in the liquid storage pot. Therefore, the pressure vessel that this application embodiment provided utilizes the theory of operation of linker, simple structure, and is favorable to improving the inside liquid level height measurement's of pressure vessel accuracy.

In some embodiments, the second air pressure equalizing port is located above the first air pressure equalizing port. Therefore, the position of the first air pressure balancing port can be set as required, so that more liquid level positions below the first air pressure balancing port can be measured.

In some embodiments, the second liquid flow port is located below the first liquid flow port. So, be convenient for as required measuring pressure vessel's the minimum liquid level height, rationally set up the height of first fluid intercommunication mouth to realize that the liquid level height in pressure vessel is higher than under the condition of first liquid circulation mouth, can always obtain the liquid level height in the liquid storage tank through the liquid level height measurement in the liquid level detection container.

In some embodiments, the pressure vessel further comprises a liquid level meter, and the liquid level piece is connected with the liquid level detection vessel and used for detecting the liquid level height in the liquid level detection vessel. So set up, be convenient for know the liquid level height in the liquid storage tank in real time, and can realize measuring the liquid level height in the liquid storage tank more conveniently, swiftly.

In some embodiments, one side of the bottom wall of the liquid level detection container, which is close to the second accommodating cavity, is a horizontally arranged plane; the level gauge is a radar level gauge, or the level gauge is an ultrasonic level gauge. So, can be so that the simple structure of level gauge, measure more accurately. In addition, the plane that one side that sets up the diapire of liquid level detection container and be close to second holding chamber is the level setting can reduce under same liquid level height, and the inconsistent problem of stroke after radar wave or ultrasonic wave reflect through the diapire of liquid level detection container improves the precision of level gauge to liquid level height measurement.

In some embodiments, the pressure vessel further comprises an isolation valve connected between the liquid level detection vessel and the liquid level gauge and used for isolating the second accommodating cavity. The isolation valve is arranged, so that the maintenance work of the pressure container can be carried out smoothly.

In some embodiments, the fluid level detection container includes a body portion having an opening at a bottom thereof and a bottom cap removably covering the opening. So set up, be convenient for regularly or irregularly clear up the impurity in the liquid level detection container, be favorable to improving liquid for detecting the interior liquid level height measurement's of container accuracy.

In some embodiments, the pressure vessel further comprises a first switch valve connected to the air pressure balancing line for controlling the connection or disconnection of the air pressure balancing line. So set up, when the liquid level height in the liquid storage tank need not be measured, be favorable to keeping the stability of liquid storage tank internal gas pressure.

In some embodiments, the pressure vessel includes a second on-off valve coupled to the fluid flow line for controlling the flow or shut-off of the fluid flow line. So set up, when need not measure the liquid level height in the liquid storage tank, be favorable to keeping the stability of liquid in the liquid storage tank.

In some embodiments, the first pressure equalization port is disposed in a top wall of the fluid reservoir. So set up, can furthest improve the liquid level height that pressure vessel can measure and obtain.

In some embodiments, the first fluid flow port is disposed in a sidewall of the fluid reservoir. Set up the lateral wall that first liquid circulation is located the liquid storage pot, can reduce the impurity in the liquid storage pot and block up first liquid circulation mouth and lead to the possibility that liquid can't circulate in first holding chamber and second holding chamber, be favorable to improving the liquid level height measurement's in the pressure vessel accuracy.

In some embodiments, the pressure vessel further comprises a blowdown line and a third on/off valve, the blowdown line in communication with the liquid flow line; the third switch valve is connected with the sewage pipeline and used for controlling the communication or the stop of the sewage pipeline. So set up, can discharge the liquid in liquid storage pot or the liquid level detection container when needs to the maintenance or the normal use of pressure vessel are convenient for.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a structure of a pressure vessel in the related art;

FIG. 2 isbase:Sub>A schematic cross-sectional view taken along A-A of FIG. 1;

FIG. 3 is a schematic structural diagram of a pressure vessel provided in an embodiment of the present application;

FIG. 4 is a schematic structural diagram of another pressure vessel provided in an embodiment of the present application;

FIG. 5 is a schematic structural diagram of another pressure vessel provided in an embodiment of the present application;

FIG. 6 is a schematic structural diagram of another pressure vessel provided in an embodiment of the present application;

fig. 7 is a schematic structural diagram of another pressure vessel provided in an embodiment of the present application.

In the drawings, the drawings are not necessarily to scale.

Description of the labeling:

1', a pressure vessel; 11', a liquid storage pipe; 12', a radar level gauge; 13', installing short pipes; 3a', a blocking surface;

1. a pressure vessel;

11. a liquid storage tank; 11a, a first accommodating cavity; 11b, a first air pressure balancing port; 11c, a first liquid flow port;

12. a liquid level detection vessel; 12a and a second accommodating cavity; 12b, a second air pressure balancing port; 12c, a second fluid flow port; 121. a body portion; 121a, an opening; 122. a bottom cover;

13. an air pressure balance pipeline; 14. a liquid flow line; 15. a liquid level meter; 16. an isolation valve; 17. a first on-off valve; 18. a second on-off valve; 19. a blowdown pipeline; 110. and a third on-off valve.

Detailed Description

Embodiments of the present application will be described in further detail with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the application and are not intended to limit the scope of the application, i.e., the application is not limited to the described embodiments.

In the description of the present application, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicate an orientation or positional relationship that is merely for convenience in describing the application and to simplify the description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. "vertical" is not strictly vertical, but is within the tolerance of the error. "parallel" is not strictly parallel but within the tolerance of the error.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the present application, it should also be noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and include, for example, fixed and removable connections as well as integral connections; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood as appropriate by one of ordinary skill in the art.

The terms of orientation such as "upper", "lower", "top", "bottom", etc. in the description of the present application are described based on the direction of gravity.

The pressure container can store materials which have certain corrosiveness and can generate certain gases, such as lithium salts for producing batteries and the like. In order to know the remaining amount of the liquid stored in the pressure container, the level information of the liquid in the pressure container needs to be measured.

The inventor of the present application has conducted systematic analysis and research on the structure of a pressure vessel after discovering that the measurement of the liquid level information of the liquid in the pressure vessel in the related art is inaccurate, and as a result, as shown in fig. 1 and 2, in the related art, the radar level gauge 12 'is generally used to measure the liquid level in the liquid storage tank 11' of the pressure vessel 1', and the radar level gauge 12' needs to be installed on the liquid storage tank 11 'of the pressure vessel 1' through the installation short pipe 13', and the installation short pipe 13' has a thick inner wall, which may form a blocking surface 13a 'at the installation part of the installation short pipe 13', and the presence of the blocking surface 13a 'may cause the radar signal emitted by the radar level gauge 12' to be reflected back by the blocking surface 13a ', and thus may cause the inaccurate measurement of the liquid level information in the pressure vessel 1'.

Based on the above problems discovered by the inventor, the inventor improves the structure of the pressure vessel, and the technical solution described in the embodiment of the present application is applicable to the pressure vessel.

The pressure vessel provided by the embodiment of the application can be used for completing physical or chemical reactions of substances, completing heat exchange of media, completing fluid pressure balance buffering and gas purification separation of the media, or storing and containing media such as gas, liquid and liquefied gas, and can also be used for other purposes.

Fig. 3 shows a schematic structural diagram of a pressure vessel 1 provided in the embodiment of the present application.

As shown in fig. 3, the pressure vessel 1 provided according to the embodiment of the present application includes a liquid storage tank 11, a liquid level detection vessel 12, a gas pressure equalization line 13, and a liquid circulation line 14. The liquid storage tank 11 has a first accommodating chamber 11a, and the liquid storage tank 11 includes a first pressure balance port 11b and a first liquid flow port 11c, and the first pressure balance port 11b is located above the first liquid flow port 11 c. The liquid level detection container 12 has a second housing chamber 12a, and the liquid level detection container 12 includes a second air pressure balance port 12b and a second liquid flow port 12c, and the second air pressure balance port 12b is located above the second liquid flow port 12 c. The air pressure balance pipeline 13 connects the first air pressure balance port 11b and the second air pressure balance port 12b, and is used as a passage for air circulation between the first accommodating cavity 11a and the second accommodating cavity 12a. The liquid circulation line 14 connects the first liquid circulation port 11c and the second liquid circulation port 12c, and serves as a passage for liquid circulation between the first accommodation chamber 11a and the second accommodation chamber 12a.

Specifically, the first receiving chamber 11a of the liquid reservoir 11 is used for storing a liquid such as lithium salt and possibly generated gas. The first pressure balance port 11b is located above the first liquid circulation port 11c, and the first pressure balance port 11b is located above the first liquid circulation port 11c in the direction of gravity. Similarly, the second air pressure balance port 12b of the liquid level detection container is located above the second liquid flow port 12c in the direction of gravity.

Alternatively, the air pressure balance pipe 13 may be disposed horizontally or obliquely with respect to the horizontal direction. Similarly, the liquid passage 14 may be disposed horizontally or obliquely with respect to the horizontal direction. Can be selected according to actual requirements.

The air pressure balance pipeline 13 is communicated with the first air pressure balance port 11b and the second air pressure balance port 12b, so that the air in the first accommodating cavity 11a can flow into the second accommodating cavity 12a through the air pressure balance pipeline 13, or the air in the second accommodating cavity 12a can flow into the second accommodating cavity 12a through the air pressure balance pipeline 13, and thus, the balance of the air pressure in the first accommodating cavity 11a and the second accommodating cavity 12a can be kept.

The liquid circulation pipeline 14 connects the first liquid circulation port 11c and the second liquid circulation port 12c, so that the liquid in the first accommodation cavity 11a can flow into the second accommodation cavity 12a through the liquid circulation pipeline 14, or the liquid in the second accommodation cavity 12a can flow into the first accommodation cavity 11a through the liquid circulation pipeline 14.

So, a communicating vessel is formed together by the liquid storage tank 11, the liquid level detection container 12, the air pressure balance pipeline 13 and the liquid circulation pipeline 14, and because the liquid storage tank 11 and the liquid level detection container 12 are communicated through the air pressure balance pipeline 13, the liquid levels in the liquid storage tank 11 and the liquid level detection container 12 are always at the same height, and the liquid level in the liquid storage tank 11 can be known by measuring the height of the liquid level in the liquid level detection container 12.

Alternatively, a separate liquid level measuring device may be used to measure the liquid level in the liquid level detection container 12, or a transparent structure may be provided to extend a part of the circumference of the liquid level detection container 12 along the gravity direction, so as to directly measure the liquid level in the liquid level detection container 12 through the transparent structure, or a scale mark may be provided on the transparent structure, so as to directly read the liquid level in the liquid level detection container 12 through the scale mark.

It is understood that the maximum height at which the liquid level in the pressure container 1 can be measured is the lower of the first air pressure equalizing port 11b and the second air pressure equalizing port 12b, and that, if the height is exceeded, liquid flows in the air pressure equalizing pipe 13, and the liquid storage tank 11 and the liquid level detection container 12 cannot form a communicating vessel. Therefore, in order to enable the liquid storage tank 11 and the liquid level detection container 12 to form a communicating vessel, the heights of the second air pressure balance port 12b and the second liquid flow port 12c can be set reasonably according to the specific height range of the liquid level information in the liquid storage tank 11 to be measured, so as to ensure that the liquid storage tank 11 and the liquid level detection container 12 can form a communicating vessel when the liquid level height in the liquid storage tank 11 is in the height range to be measured.

The embodiment of the application provides a pressure vessel 1, through setting up liquid level detection container 12, and set up atmospheric pressure balance pipeline 13 and liquid circulation pipeline 14 and communicate liquid storage pot 11 and liquid level detection container 12 respectively, liquid level in pressure vessel 1 is when the certain limit, liquid storage pot 11, the liquid level detection pipeline, the linker is constituteed jointly to atmospheric pressure balance pipeline 13 and liquid circulation pipeline 14, the liquid level highly uniform in liquid storage pot 11 and the liquid level detection container 12, through measuring the liquid level height in the liquid level detection container 12, can accurately learn the liquid level height in the liquid storage pot 11. Therefore, the pressure vessel 1 provided by the embodiment of the application utilizes the working principle of the communicating vessel, has a simple structure, and is favorable for improving the accuracy of the measurement of the liquid level height in the pressure vessel 1.

In some embodiments, the second air pressure equalizing port 12b is located above the first air pressure equalizing port 11 b.

Specifically, the second air pressure balance port 12b may be provided to be flush with the first air pressure balance port 11b in the horizontal direction, or the second air pressure balance port 12b may be located above the first air pressure balance port 11b in the direction of gravity. Here, the second air pressure equalizing port 12b is located above the first air pressure equalizing port 11b, and the second air pressure equalizing port 12b may be located not just above the first air pressure equalizing port 11b in the direction of gravity but also above the side of the first air pressure equalizing port 11 b.

It can be understood that, by setting the second air pressure balance port 12b to be located above the first air pressure balance port 11b, the maximum liquid level height that can be measured is the height at which the first air pressure balance port 11b is located, and thus, the position of the first air pressure balance port 11b can be set as required, so as to realize measurement of more liquid level positions below the first air pressure balance port 11 b.

In some embodiments, the second liquid passage opening 12c is located below the first liquid passage opening 11 c.

Specifically, the second liquid flow port 12c may be provided flush with the first liquid flow port 11c in the horizontal direction, or the second liquid flow port 12c may be located below the first liquid flow port 11c in the direction of gravity. The second liquid flow port 12c is located below the first liquid flow port 11c, and the second liquid flow port 12c is not necessarily located directly below the first liquid flow port 11c, and may be located below the side of the first liquid flow port 11 c.

It will be understood that the second fluid passage 12c is arranged below the first fluid passage 11c, so that the fluid in the first receiving chamber 11a can always flow into the second receiving chamber 12a through the second fluid passage 12c when the fluid level is higher than the second fluid passage 12 c. Therefore, with such an arrangement, the lowest liquid level of the pressure vessel 1, which can be measured as required, can be conveniently measured, and the height of the first fluid communication port can be reasonably set, so that the liquid level in the liquid storage tank 11 can be always measured by the liquid level in the liquid level detection vessel 12 under the condition that the liquid level in the pressure vessel 1 is higher than the first liquid communication port 11 c.

Fig. 4 shows a schematic structural diagram of another pressure vessel 1 provided in the embodiment of the present application.

As shown in fig. 4, in some embodiments, the pressure vessel 1 further comprises a liquid level meter 15, and the liquid level meter 15 is connected to the liquid level detection vessel 12 and is used for detecting the liquid level in the liquid level detection vessel 12.

Alternatively, the type of the liquid level meter 15 may be a tuning fork vibration type, a magnetic levitation type, a pressure type, an ultrasonic wave, a sonar wave type, a magnetic flip type, a radar type, or the like, as long as the liquid level height inside the liquid level detection container 12 can be measured.

It can be understood that the pressure container 1 further comprises a liquid level meter 15, so that the liquid level height in the liquid storage tank 11 can be known in real time conveniently, and the liquid level height in the liquid storage tank 11 can be measured more conveniently and rapidly.

In some embodiments, a side of the bottom wall of the liquid level detection container 12 close to the second accommodating cavity 12a is a horizontally arranged plane. The level gauge 15 is a radar level gauge or alternatively the level gauge 15 is an ultrasonic level gauge.

Specifically, the bottom wall of the liquid level detection container 12 is close to one side of the second accommodating chamber 12a, that is, the surface of the bottom of the liquid level detection container 12 close to one side of the second accommodating chamber 12a.

Set up level gauge 15 and be radar level gauge or ultrasonic wave level gauge, can be so that level gauge 15's simple structure measures more accurately.

In addition, because radar level gauge or ultrasonic wave level gauge are through launching radar wave or ultrasonic wave to after the diapire reflection of liquid level detection container 12, through the mode of measuring the stroke of ultrasonic wave or radar wave measure the liquid level in the liquid level detection container 12, consequently, the one side that sets up the diapire of liquid level detection container 12 and be close to second holding chamber 12a is the plane that the level set up, can reduce under the same liquid level height, the inconsistent problem of stroke after radar wave or ultrasonic wave reflect through the diapire of liquid level detection container 12, improve level gauge 15 to the precision of liquid level height measurement.

In some embodiments, the pressure vessel 1 further includes an isolation valve 16, and the isolation valve 16 is connected between the liquid level detection vessel 12 and the liquid level meter 15 and is used for isolating the second accommodation chamber 12a.

It will be appreciated that when it is desired to detect the level of liquid within the tank 11, the isolation valve 16 may be opened such that the level gauge 15 is in communication with the level detection vessel 12. When the liquid level in the liquid storage tank 11 does not need to be detected, or the pressure container 1 needs to be overhauled, the isolation valve 16 can be closed, so that the liquid level detection container 12 is isolated from the outside, namely the pressure container 1 is isolated from the outside, and the isolated state of the pressure container 1 from the outside is kept, therefore, the pressure container 1 such as the liquid storage tank 11 can be overhauled without discharging the liquid in the pressure container 1. Therefore, the isolation valve 16 is provided, which facilitates smooth maintenance of the pressure vessel 1.

Fig. 5 is a schematic structural diagram of a pressure vessel 1 according to yet another embodiment of the present application.

As shown in fig. 5, in some embodiments, the liquid level detection container 12 includes a body portion 121 and a bottom cover 122, the bottom of the body portion 121 has an opening 121a, and the bottom cover 122 is detachably covered on the opening 121a.

Alternatively, the second air pressure equalizing port 12b and the second liquid flow port 12c may be provided in the body portion 121.

It can be understood that the liquid in the liquid storage tank 11 is complicated and unstable in nature, and various impurities are inevitably mixed therein, and after the liquid in the liquid storage tank 11 flows to the liquid level detection container 12, the mixed impurities are deposited on the bottom wall of the liquid level detection container 12, and the surface appearance of the bottom of the liquid level detection container 12 is changed due to the long-term accumulation of the impurities, so that the bottom cover 122 is detachably arranged to cover the opening 121a at the bottom of the body part 121, thereby facilitating the periodic or irregular cleaning of the impurities in the liquid level detection container 12, and being beneficial to improving the accuracy of the liquid level height measurement in the liquid level detection container.

In some embodiments, the pressure vessel 1 further comprises a first switch valve 17, and the first switch valve 17 is connected to the pneumatic balance line 13 for controlling the connection or disconnection of the pneumatic balance line 13.

Specifically, when the liquid level height in the liquid storage tank 11 needs to be measured, the first switch valve 17 can be opened to realize that gas flows between the first accommodating cavity 11a and the second accommodating cavity 12a through the air pressure balancing pipeline 13, and when the liquid level height in the liquid storage tank 11 does not need to be measured, the first switch valve 17 can be closed, the air pressure balancing pipeline 13 is in a cut-off state, and the gas is prevented from passing through the air pressure balancing pipeline 13. With such an arrangement, when the liquid level in the liquid storage tank 11 does not need to be measured, the stability of the air pressure in the liquid storage tank 11 is favorably maintained.

In some embodiments, the pressure vessel 1 includes a second on-off valve 18, and the second on-off valve 18 is connected to the liquid circulation line 14 for controlling the circulation or cutoff of the liquid circulation line 14.

Specifically, when the liquid level in the liquid storage tank 11 needs to be measured, the second on-off valve 18 may be opened to realize the liquid communication between the first accommodation chamber 11a and the second accommodation chamber 12a through the liquid communication line 14. When the liquid level in the liquid storage pipe does not need to be measured, the second switch valve 18 can be closed, and the liquid circulation pipeline 14 is in a cut-off state, so that liquid is prevented from passing through the liquid circulation pipeline 14. With such an arrangement, when the liquid level in the liquid storage tank 11 does not need to be measured, the stability of the liquid in the liquid storage tank 11 is favorably maintained.

Optionally, the first air pressure balance port 11b may be disposed at any height of the liquid storage tank 11, and the position of the first air pressure balance port 11b may be specifically set according to the liquid level height in the liquid storage tank 11, which is measured according to actual needs.

Fig. 6 shows a schematic structural diagram of a pressure vessel 1 provided in the embodiment of the present application.

As shown in FIG. 6, in some embodiments, the first air pressure equalizing port 11b is disposed in a top wall of the reservoir 11.

Thus, when the second air pressure balance port 12b is sufficiently high, the liquid level in the liquid storage tank 11 can be measured even when the liquid in the liquid storage tank 11 is large. Thus, with this arrangement, the height of the liquid level that can be measured by the pressure vessel 1 can be maximized.

In some embodiments, the first fluid communication port 11c is disposed in a sidewall of the fluid reservoir 11.

It can be understood that impurities in the liquid storage tank 11 can be deposited at the bottom of the first accommodating cavity 11a, and therefore, the arrangement of the first liquid circulation port on the side wall of the liquid storage tank 11 can reduce the possibility that the impurities in the liquid storage tank 11 block the first liquid circulation port 11c to cause the liquid to be unable to circulate in the first accommodating cavity 11a and the second accommodating cavity 12a, which is beneficial to improving the accuracy of the liquid level height measurement in the pressure container 1.

Fig. 7 shows a schematic structural diagram of a pressure vessel 1 provided in the embodiment of the present application.

As shown in fig. 7, in some embodiments, the pressure vessel 1 further comprises a blowdown line 19 and a third on/off valve 110, the blowdown line 19 being in communication with the liquid circulation line 14. The third switching valve 110 is connected to the sewage line 19 and controls the connection or disconnection of the sewage line 19.

It will be appreciated that in some circumstances it may be desirable to drain the fluid in the reservoir 11 and the level detection container 12. Alternatively, only the liquid in the liquid level detection container 12 may be discharged during the maintenance of the liquid reservoir tank 11. Therefore, the pressure container 1 further comprises a sewage line 19 and a third on-off valve 110, and when the liquid in the liquid storage tank 11 or the liquid level detection container 12 needs to be discharged, the third on-off valve 110 can be opened to communicate the sewage line 19. When the liquid in the liquid storage tank 11 or the liquid level detection container 12 does not need to be discharged, the third on/off valve 110 may be closed to stop the sewage line 19.

It will be appreciated that in embodiments where the pressure vessel 1 further comprises a second on/off valve 18, a blowdown line 19 may be connected to the portion of the liquid circulation line 14 between the third on/off valve 110 and the liquid level detection vessel 12, in order to enable a blowdown line to drain only liquid within the liquid level detection vessel 12. In this manner, the second on-off valve 18 can be closed when it is only necessary to discharge the liquid in the liquid level detection container 12, not the liquid in the liquid reservoir tank 11.

Therefore, the pressure vessel 1 is provided with a sewage drain line 19 and a third on/off valve 110, which can drain the liquid in the liquid storage tank 11 or the liquid level detection vessel 12 when necessary, so as to facilitate the maintenance or normal use of the pressure vessel 1.

While the present application has been described with reference to preferred embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the present application, and in particular, features shown in the various embodiments may be combined in any manner as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims (10)

1. A pressure vessel, comprising:

the liquid storage tank is provided with a first accommodating cavity and comprises a first air pressure balancing port and a first liquid flow port, and the first air pressure balancing port is positioned above the first liquid flow port;

the liquid level detection container is provided with a second accommodating cavity and comprises a second air pressure balancing port and a second liquid circulation port, and the second air pressure balancing port is positioned above the second liquid circulation port;

the air pressure balance pipeline is connected with the first air pressure balance port and the second air pressure balance port and is used as a channel for air circulation between the first accommodating cavity and the second accommodating cavity;

and the liquid circulation pipeline is connected with the first liquid circulation port and the second liquid circulation port and used as a passage for liquid circulation between the first accommodating cavity and the second accommodating cavity.

2. The pressure vessel of claim 1, wherein the second pressure equalizing port is located above the first pressure equalizing port; and/or

The second fluid flow port is located below the first fluid flow port.

3. The pressure vessel of claim 1, further comprising a liquid level gauge coupled to the liquid level detection vessel and configured to detect a liquid level within the liquid level detection vessel.

4. The pressure vessel of claim 3, wherein the bottom wall of the liquid level detection vessel is a plane horizontally arranged on one side close to the second accommodating cavity;

the liquid level meter is a radar liquid level meter, or the liquid level meter is an ultrasonic liquid level meter.

5. The pressure vessel of claim 3, further comprising an isolation valve connected between the level detection vessel and the gauge for isolating the second receiving chamber.

6. The pressure vessel of claim 1, wherein the level sensing vessel includes a body portion having an opening at a bottom thereof and a bottom cover removably covering the opening.

7. The pressure vessel of any one of claims 1 to 6, further comprising a first switch valve connected to the pneumatic balancing line for controlling the connection or disconnection of the pneumatic balancing line.

8. The pressure vessel of any one of claims 1 to 6, comprising a second on-off valve connected to the liquid flow line for controlling the flow or shut-off of the liquid flow line.

9. The pressure vessel of any of claims 1 to 6, wherein the first pressure equalization port is disposed in a top wall of the liquid storage tank; and/or the first liquid circulation port is arranged on the side wall of the liquid storage tank.

10. The pressure vessel of any of claims 1 to 6, further comprising a blowdown line and a third on/off valve, the blowdown line being in communication with the liquid circulation line; the third switch valve is connected with the sewage discharge pipeline and is used for controlling the connection or the disconnection of the sewage discharge pipeline.

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