CN210687758U

CN210687758U - Limit charging device for cryogenic pressure vessel

Info

Publication number: CN210687758U
Application number: CN201921653594.0U
Authority: CN
Inventors: 李波; 吴海斌; 钱向红; 朱德兴; 龚俊林
Original assignee: CHENGDU LANSHI LOW-TEMPERATURE TECHNOLOGY Ltd
Current assignee: CHENGDU LANSHI LOW-TEMPERATURE TECHNOLOGY Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-06-05
Anticipated expiration: 2029-09-30

Abstract

The utility model discloses a charge limiting device for a cryogenic pressure vessel, which relates to the field of cryogenic storage and transportation and comprises a cryogenic vessel and a liquid level meter arranged on the cryogenic vessel; an anti-overcharging pipeline is further installed on the cryogenic container, and an electromagnetic valve is further installed on the anti-overcharging pipeline; the liquid level meter comprises a detection module and a control module, wherein the output end of the detection module is electrically connected with the input end of the control module, and the output end of the control module is electrically connected with the input end of the electromagnetic valve. The utility model discloses can carry out real time monitoring through the liquid level height of detection module in the level gauge to the cryrogenic container, after the liquid level in the cryrogenic container surpassed the default, control module in the level gauge sends control signal to the solenoid valve automatically to opening of drive solenoid valve makes and prevents that the overcharging pipeline is opened, makes the automatic discharge of cryogenic liquids in the cryrogenic container, makes the preventing of cryrogenic container fill the effect and improve greatly.

Description

Limit charging device for cryogenic pressure vessel

Technical Field

The utility model relates to a cryrogenic is stored and the transportation field particularly, relates to a cryrogenic pressure vessel is with limit for charging device.

Background

According to the requirement of a file No. 2019 special letter of municipal administration of State market supervision and management, in order to prevent the filled low-temperature liquid from leading in with external heat, so that the temperature of the low-temperature liquid is gradually increased, the volume of the low-temperature liquid is continuously expanded, the low-temperature liquid is in an overfilled state, the low-temperature liquid is easy to explode and other potential safety hazards, a design and manufacturing unit needs to provide measures for controlling the maximum filling amount of the cryogenic container and inform a using unit, and the manufacturing unit is matched with a fixed cryogenic pressure container with the geometric volume of less than or equal to 10m3 to be provided with a filling limiting device. The existing cryogenic container is provided with a reserved inner container space structure, and the structure can prevent the occurrence of an over-filling phenomenon of the cryogenic container to a certain extent, so that an enterprise does not additionally arrange a limit filling device on the cryogenic container at present in order to save cost, but the structure has an unsatisfactory effect in the actual use process, if the liquid level in the cryogenic container is not removed in time after rising, the low-temperature container and a liquid phase pipe are easily blocked by ice, and the safety of the cryogenic container is finally influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cryrogenic pressure vessel is with limit device of filling makes the liquid level in the cryrogenic container rise the back, makes the low temperature liquid body that surpasss liquid level can automatic discharge to effectively ensure the cryrogenic container security.

For realizing the purpose of the utility model, the technical proposal adopted is that: a charge limiting device for a cryogenic pressure vessel comprises the cryogenic vessel and a liquid level meter arranged on the cryogenic vessel; an anti-overcharging pipeline is further installed on the cryogenic container, and an electromagnetic valve is further installed on the anti-overcharging pipeline; the liquid level meter comprises a detection module and a control module, wherein the output end of the detection module is electrically connected with the input end of the control module, and the output end of the control module is electrically connected with the input end of the electromagnetic valve.

Furthermore, prevent that the overcharge pipeline is two, two input of preventing the overcharge pipeline are installed respectively at the upper and lower both ends of cryrogenic container, and the output of two prevent that the overcharge pipeline connects in parallel the setting.

Furthermore, the two anti-over-filling pipelines are both provided with filling valves.

Furthermore, the liquid level meter also comprises an alarm module, and the output end of the control module is electrically connected with the input end of the alarm module.

Furthermore, the alarm module is an audible and visual alarm.

Furthermore, still install pressure sensor in the cryrogenic container, pressure sensor's output is connected with control module's input electricity.

Further, the detection module is an electronic differential pressure sensor.

Furthermore, still install temperature sensor in the cryrogenic container, temperature sensor's output is connected with control module's input electricity.

Further, the electromagnetic valve is a low-temperature electromagnetic valve.

Furthermore, a battery module is further installed in the liquid level meter, and the output end of the battery module is electrically connected with the input end of the control module.

The utility model has the advantages that,

the utility model discloses can carry out real time monitoring through the liquid level height of detection module in the level gauge to the cryrogenic container, after the liquid level in the cryrogenic container surpassed the default, control module in the level gauge sends control signal to the solenoid valve automatically to opening of drive solenoid valve makes and prevents that the overcharging pipeline is opened, makes the automatic discharge of cryogenic liquids in the cryrogenic container, makes the preventing of cryrogenic container fill the effect and improve greatly.

The electromagnetic valve is adopted to control the opening and closing of the anti-overcharging pipeline, so that not only is the leakage point of the anti-overcharging pipeline effectively prevented, but also the ice blockage of the anti-overcharging pipeline is effectively prevented, and the damage of field power supply is avoided; meanwhile, the equipment cost of enterprises is greatly reduced.

The utility model discloses simple to operate is applicable to and reforms transform the cryrogenic container, and makes the anti-overcharging effect of cryrogenic container improve greatly.

Drawings

FIG. 1 is a schematic structural diagram of a charge limiting device for a cryogenic pressure vessel provided by the present invention;

fig. 2 is a system block diagram of a charge limiting device for a cryogenic pressure vessel provided by the present invention.

Reference numbers and corresponding part names in the drawings:

1. a cryogenic container, 2, a liquid level meter, 3, an anti-overcharging pipeline, 4, an electromagnetic valve, 5 and a charging valve.

Detailed Description

The present invention will be described in further detail below with reference to specific embodiments and with reference to the accompanying drawings.

Example 1

As shown in fig. 1 and fig. 2, the present embodiment provides a charge limiting device for a cryogenic pressure vessel, comprising a cryogenic vessel 1 and a liquid level meter 2 mounted on the cryogenic vessel 1; an anti-overcharging pipeline 3 is further installed on the cryogenic container 1, and an electromagnetic valve 4 is further installed on the anti-overcharging pipeline 3; the liquid level meter 2 comprises a detection module and a control module, the output end of the detection module is electrically connected with the input end of the control module, and the output end of the control module is electrically connected with the input end of the electromagnetic valve 4.

The cryogenic container 1 is a cryogenic tank, and the anti-overcharging pipeline 3 is communicated with the interior of the cryogenic container 1, so that low-temperature liquid in the cryogenic container 1 can be directly discharged through the anti-overcharging pipeline 3; level gauge 2 passes through screw fixed mounting on the outer wall of cryrogenic container 1, and detection module among level gauge 2 installs in cryrogenic container 1, and control module among level gauge 2 then installs on the outer wall of cryrogenic container 1. In the process of storing low-temperature liquid by the cryogenic container 1, a preset value can be directly input into the detection module, the detection module detects the liquid level in the cryogenic container 1 at the moment, a signal detected by the detection module is transmitted to the control module, when the control module receives that the liquid level detected by the detection module is greater than the preset value, the control module immediately outputs a control signal to the electromagnetic valve 4, the electromagnetic valve 4 is automatically opened after receiving the control signal sent by the control module, the cryogenic pipeline 3 is automatically opened at the moment, and the low-temperature liquid in the cryogenic container 1 can be automatically discharged through the cryogenic pipeline 3; when the control module receives that the liquid level detected by the detection module is smaller than the preset value, the control module immediately outputs a control signal to the electromagnetic valve 4, the electromagnetic valve 4 is automatically closed after the electromagnetic valve 4 receives the control signal sent by the control module, the overcharge-preventing pipeline 3 is automatically closed at the moment, and the low-temperature liquid in the cryogenic container 1 is hermetically stored.

The number of the anti-overcharging pipelines 3 is two, the input ends of the two anti-overcharging pipelines 3 are respectively arranged at the upper end and the lower end of the cryogenic container 1, and the output ends of the two anti-overcharging pipelines 3 are arranged in parallel; wherein one prevents that overcharge pipeline 3's input is connected with cryrogenic container 1's lower extreme, and another prevents that overcharge pipeline 3's input is connected with cryrogenic container 1's upper end, and when the liquid level of cryogenic liquids exceeds control module's default in cryrogenic container 1, one of them or two discharges among the cryogenic liquids accessible in the cryrogenic container 1 two prevent overcharge pipeline 3, effectively avoid making the cryogenic liquids in the cryrogenic container 1 can not discharge because of one of them prevents that the stifled back of 3 ices of overcharge pipeline, make cryogenic containers prevent that overcharge is protected, make the utility model discloses a prevent that overcharge effect is better.

The two anti-overcharging pipelines 3 are both provided with a charging valve 5; fill dress valve 5 and be the stop valve, fill dress valve 5 through two and control two respectively and prevent overcharging pipeline 3, low-temperature liquid in the low temperature container when overcharging only need prevent that overcharging pipe valve discharges through one when can, can prevent with one of them that the filling dress valve 5 on the overcharging pipeline 3 opens can, effectively prevent to make two or one of them prevents overcharging pipeline 3 shutoff because of the low-temperature liquid in the low temperature container prevents that overcharging pipeline 3 discharges from two for a long time, makes the utility model discloses still can effectively prevent to take place the overcharge phenomenon in the low temperature container under one of them pipeline ice stifled condition.

A battery module is also installed in the liquid level meter 2, and the output end of the battery module is electrically connected with the input end of the control module; the utility model discloses in the use, battery module is connected with the power supply electricity, and battery module is storage battery, and when making the power supply outage, battery module can last control module to still keep normal work for making solenoid valve 4 and detection module, thereby make the utility model discloses still can prevent the overcharge protection under the condition of power supply outage, make the use of cryrogenic container 1 more convenient.

The detection module is an electronic differential pressure sensor; the electromagnetic valve 4 is a low-temperature electromagnetic valve 4.

When the device is used, the filling valve 5 on one of the anti-overcharging pipelines 3 is opened, a preset value is input into the detection module, the detection module detects the liquid level in the cryogenic container 1 at the moment, a signal detected by the detection module is transmitted to the control module, when the control module receives that the liquid level detected by the detection module is greater than the preset value, the control module immediately outputs a control signal to the electromagnetic valve 4, the electromagnetic valve 4 is automatically opened after receiving the control signal sent by the control module, the anti-overcharging pipeline 3 is automatically opened at the moment, and low-temperature liquid in the cryogenic container 1 can be automatically discharged through the anti-overcharging pipeline 3; when the control module receives that the liquid level detected by the detection module is smaller than the preset value, the control module immediately outputs a control signal to the electromagnetic valve 4, the electromagnetic valve 4 is automatically closed after the electromagnetic valve 4 receives the control signal sent by the control module, the overcharge-preventing pipeline 3 is automatically closed at the moment, and the low-temperature liquid in the cryogenic container 1 is hermetically stored.

Example 2

The present embodiment 2 differs from embodiment 1 in that:

the embodiment provides a charge limiting device for a cryogenic pressure vessel, wherein a pressure sensor is further installed in the cryogenic vessel 1, and the output end of the pressure sensor is electrically connected with the input end of a control module; pressure sensor installs in cryrogenic container 1, can effectively detect the pressure in the cryrogenic container 1 through pressure sensor, and pressure sensor is detecting the pressure in the cryrogenic container 1 after, and pressure sensor gives control module with the signal transmission who detects to the realization carries out real time monitoring to the pressure in the cryrogenic container 1, effectively avoids because of the too big emergence explosion of pressure in the cryrogenic container 1.

The liquid level meter 2 further comprises an alarm module, and the output end of the control module is electrically connected with the input end of the alarm module; the utility model discloses when using, can be earlier to a pressure default of detection module input, pressure sensor is giving control module back in the pressure signal transmission who will measure, when control module received pressure signal is greater than control module's pressure default, control module will send alarm signal to alarm module, alarm module begins to report to the police, make the staff very first time learn that the pressure in cryrogenic container 1 exceeds standard, the staff can carry out the pressure release processing to cryrogenic container 1 very first time this moment, effectively prevent that cryrogenic container 1 from producing the explosion because of the pressure is too big.

When the pressure signal received by the control module is smaller than the pressure preset value of the control module, the control module does not send an alarm signal to the alarm module, and at the moment, the cryogenic container 1 is in a pressure safety state. The alarm module is an audible and visual alarm, so that the worker can quickly know that the pressure in the cryogenic container 1 exceeds the standard, and the worker can perform pressure relief treatment on the cryogenic container 1 at the first time.

A temperature sensor is also arranged in the deep cooling container 1, and the output end of the temperature sensor is electrically connected with the input end of the control module; temperature sensor installs in cryrogenic container 1, detects the temperature in cryrogenic container 1 through temperature sensor, and control module is given in the temperature signal transmission after temperature sensor detects to the realization is monitored the temperature in cryrogenic container 1.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The filling limiting device for the cryogenic pressure vessel is characterized by comprising a cryogenic vessel (1) and a liquid level meter (2) arranged on the cryogenic vessel (1); an anti-overcharging pipeline (3) is further installed on the cryogenic container (1), and an electromagnetic valve (4) is further installed on the anti-overcharging pipeline (3); the liquid level meter (2) comprises a detection module and a control module, the output end of the detection module is electrically connected with the input end of the control module, and the output end of the control module is electrically connected with the input end of the electromagnetic valve (4).

2. The charge limiting device for the cryogenic pressure vessel as claimed in claim 1, wherein the number of the overcharge preventing pipes (3) is two, the input ends of the two overcharge preventing pipes (3) are respectively installed at the upper end and the lower end of the cryogenic vessel (1), and the output ends of the two overcharge preventing pipes (3) are arranged in parallel.

3. The charge limiting device for cryogenic pressure vessels according to claim 2, characterized in that a charge valve (5) is mounted on both of said anti-overfill pipes (3).

4. The filling limiting device for the cryogenic pressure vessel according to claim 1, wherein a pressure sensor is further installed in the cryogenic vessel (1), and an output end of the pressure sensor is electrically connected with an input end of the control module.

5. The charge limiting device for the cryogenic pressure vessel according to claim 4, wherein the liquid level meter (2) further comprises an alarm module, and an output end of the control module is electrically connected with an input end of the alarm module.

6. The charge limiting device for the cryogenic pressure vessel according to claim 5, wherein the alarm module is an audible and visual alarm.

7. The filling limiting device for the cryogenic pressure vessel according to claim 1, wherein a temperature sensor is further installed in the cryogenic vessel (1), and an output end of the temperature sensor is electrically connected with an input end of the control module.

8. The charge-limiting device for a cryogenic pressure vessel of claim 1, wherein the detection module is an electronic differential pressure sensor.

9. The charge limiting device for cryogenic pressure vessels according to claim 1, characterized in that the solenoid valve (4) is a low temperature solenoid valve.

10. The charge limiting device for the cryogenic pressure vessel as claimed in any one of claims 1 to 9, wherein a battery module is further installed in the liquid level meter (2), and an output end of the battery module is electrically connected with an input end of the control module.