TWI727729B - Pressure control equipment - Google Patents

Abstract

This creation is a kind of pressure control equipment, which is mainly equipped with a control device and a pressure detection system in the housing. The pressure detection system includes an outlet channel, a total pressure detection module, a connection pipeline and a parallel connection connection pipeline connected in sequence A plurality of storage barrel pressure detection modules, each storage barrel pressure detection module has an inlet channel connected to the storage barrel, a solenoid valve that controls opening and closing, and is electrically connected to the control device and a pressure detector. This creative pressure control equipment can use pressure The detector detects the corresponding internal pressure value of the storage barrel, and the control device controls the solenoid valve according to the corresponding internal pressure value of the storage barrel to connect or close the corresponding inlet channel, thereby achieving the effect of automatically switching the air supply storage barrel, and can use This automatically releases the pressure of the storage barrel and effectively utilizes the discharged industrial, medical and food-grade liquid gas, which not only improves the convenience of operation, but also avoids the interruption of air supply and reduces the waste of resources and costs.

Description

Pressure control equipment

This creation is a kind of pressure control equipment, especially the pressure control equipment used to detect the pressure value of the gas storage tank of low-temperature liquid gas and can automatically switch the gas supply storage tank.

Generally, liquid gas will be liquefied under high pressure and packed into storage barrels of low-temperature liquid gas for easy transportation and application. Among them, in some production lines that require a large amount of liquid gas or medical oxygen used by hospital patients, the manufacturer will prepare it in advance Most of the storage barrels are used for production lines or hospitals. Therefore, after the liquid gas in the storage barrels in use is exhausted, other storage barrels can be used immediately to ensure that the production line or the patient's medical oxygen can be continuously supplied.

However, the operation of changing storage barrels is mainly carried out manually. When the liquid gas in the storage barrel in use is exhausted, the operator must switch the storage barrel with gas to maintain the gas supply. In operation It is more inconvenient, and because the inventory cannot be effectively controlled, it is easy to cause the production line to stagnate or the risk of the hospital patient's gas loss, which will affect the product quality and patient safety.

In addition, due to the low boiling point of some liquid gases (such as: the boiling point of liquid oxygen: -183°C, the boiling point of liquid argon: -183°C, the boiling point of liquid nitrogen: -196°C), the inside of the storage barrel is stored for a long time. The pressure of the liquid gas will gradually heat up and increase the pressure as the heat is transferred to the barrel. When the pressure inside the barrel is higher than the safe value, the air must be discharged through the safety discharge valve of the barrel to release the pressure. , To return the pressure value inside the storage barrel to a safe value to avoid danger; however, when the pressure relief action of the storage barrel is performed nowadays, the gas inside the storage barrel is discharged into the atmosphere, and the pressure relief cannot be used Gas, leading to waste of resources and costs.

The main purpose of this creation is to provide a pressure control device, hoping to improve the current use of liquid gas, the only way to manually switch the gas supply pipeline to switch the liquid gas storage barrels, and there are inconvenient operation, production line stagnation, hospitals The medical oxygen is interrupted or the quality of the products produced is affected. In addition, when the safe pressure relief action of the storage barrel is performed, the gas inside the storage barrel is discharged into the atmosphere and cannot be used, resulting in resources and costs. The problem of waste.

In order to achieve the purpose of the foregoing disclosure, the pressure control device of this creation includes: a housing; a control device, which is arranged in the housing; and a pressure detection system, which is arranged in the housing, and the pressure detection system It includes: an outlet channel which is arranged in the housing base and protrudes from one side of the housing base; a total pressure detector which is arranged on the outlet channel and is electrically connected to the control device; and a connecting pipe At least one total pressure detection module, which includes a total pressure gauge and two opening and closing valves, the total pressure gauge is connected to the outlet channel and the connecting pipeline, the two opening and closing valves are respectively set in the total pressure Between the gauge and the connecting pipeline and the outlet channel, and used to manually control the communication state between the connecting pipeline and the corresponding total pressure gauge; and a plurality of storage barrel pressure detection modules, the plurality of storage barrel pressure detection modules The groups are respectively connected in parallel to the connecting pipeline. Each storage barrel pressure detection module includes an inlet channel, a solenoid valve, a pressure detector and an on-off valve. The inlet channel is arranged on the housing and protrudes Out of the bottom of the housing, the solenoid valve is arranged between the inlet channel and the connecting pipeline, and the solenoid valve is electrically connected to the control device, and the pressure detector is connected to the inlet channel and electrically connected to the Control device, the pressure detector is used to detect the pressure value in the inlet channel, and the on-off valve is It is arranged between the solenoid valve and the connecting pipeline, and is used to manually control the communication state between the connecting pipeline and the corresponding solenoid valve.

This creative pressure control device can connect the inlet channels of the plurality of storage barrel pressure detection modules to a storage barrel containing liquid gas, and connect the outlet channels to a gas supply device to supply gas. Among them, this creation Pressure control equipment has the following advantages:

1. Automatically switch gas supply storage barrels: This creative pressure control equipment can use the pressure detectors of the plurality of storage barrel pressure detection modules to detect the internal pressure of the corresponding storage barrels, and respectively control the solenoid valves through the control device to communicate Or close the corresponding inlet channel, wherein when the internal pressure value of the storage barrel drops to a certain value, the control device will control the corresponding solenoid valve so that the solenoid valve closes the inlet channel and controls the other at the same time The solenoid valve of the storage tank pressure detection module connects the inlet channel of the other storage tank pressure detection module to the connecting pipeline, thereby achieving the effect of automatically switching the gas supply storage tank without manually switching the supply The gas storage barrel can not only improve the convenience of operation, but also avoid the problem of interruption of the gas supply.

2. Effective use of pressure-relieved gas: As mentioned above, this creative pressure control device can use the pressure detectors of the multiple storage barrel pressure detection modules to detect the internal pressure of the corresponding storage barrels. When the pressure detector detects the corresponding storage When the internal pressure value of the barrel is higher than the safe value, the control device will control the corresponding solenoid valve to make the corresponding inlet channel communicate with the connecting pipeline, thereby allowing the storage barrel to discharge the internal liquid gas into the The connecting pipeline enables the discharged gas to pass through the total pressure detection module and enter the gas supply device from the outlet channel for the production line or the patient's medical oxygen to use, which can avoid waste of resources and costs.

10: Shell seat

20: control device

21: Processing module

22: Storage barrel warning light

23: Total pressure warning light

30: Pressure detection system

31: Exit channel

32: Total pressure detector

33: Connecting pipeline

34: Total pressure detection module

341: total pressure gauge

342: Open and close valve

35: Storage barrel pressure detection module

351: Entrance Channel

352: Solenoid valve

353: Pressure Detector

354: On-off valve

36: Alternate intake channel

361: control valve

40: storage bucket

Figure 1: A schematic plan view of a preferred embodiment of this creative pressure control device before connecting to the storage barrel.

Figure 2: Schematic diagram of the open state of the shell of this creative pressure control equipment.

Figure 3: Schematic diagram of the pressure detection system of this creative pressure control equipment.

Figure 4: A schematic diagram of the side view plane of the pressure detection module of the storage barrel of this creative pressure control equipment.

Figure 5: A schematic diagram of the use status of this creative pressure control equipment.

Figure 6: Schematic diagram of the pressure relief of this creative pressure control equipment.

Please refer to FIGS. 1 to 4, which are a preferred embodiment of a pressure control device for creation, which includes a housing 10, a control device 20 and a pressure detection system 30.

As shown in FIG. 2, the control device 20 is disposed in the housing 10, wherein the control device 20 includes a processing module 21, a plurality of storage barrel warning lights 22, and a total pressure warning light 23, the plurality of storage barrels The warning light 22 and the total pressure warning light 23 are electrically connected to the processing module 21.

As shown in Figure 3, the pressure detection system 30 is arranged in the housing 10, the pressure detection system 30 includes an outlet channel 31, a total pressure detector 32, a connecting pipeline 33, at least one total pressure detection module Group 34 and a plurality of storage barrel pressure detection modules 35.

As shown in FIG. 3, the outlet channel 31 is arranged in the housing base 10 and protrudes from one side of the housing base 10.

As shown in FIG. 3, the total pressure detector 32 is disposed in the outlet channel 31 and electrically connected to the control device 20, and the total pressure detector 32 is used to detect the pressure value in the outlet channel 31.

As shown in FIG. 3, the total pressure detection module 34 includes a total pressure gauge 341 and two opening and closing valves 342. The total pressure gauge 341 is connected to the outlet channel 31 and the connecting pipeline 33. valve 342 is respectively arranged between the total pressure gauge 341 and the connecting pipe 33 and the outlet channel 31, and is used to manually control the communication state between the connecting pipe 33 and the corresponding total pressure gauge 341.

As shown in Figures 3 and 4, the plurality of storage barrel pressure detection modules 35 are respectively connected in parallel to the connecting pipeline 33. Each storage barrel pressure detection module 35 includes an inlet channel 351, a solenoid valve 352, and a The pressure detector 353 and an on-off valve 354, the inlet channel 351 is arranged on the housing base 10 and protrudes from the bottom of the housing base 10, and the solenoid valve 352 is arranged on the inlet channel 351 and the connecting pipe 33 And the solenoid valve 352 is electrically connected to the control device 20, the pressure detector 353 is connected to the inlet channel 351 and is electrically connected to the control device 20, and the pressure detector 353 is used to detect the inlet channel 351, the switch valve 354 is set between the solenoid valve 352 and the connecting pipeline 33, and is used to manually control the communication state between the connecting pipeline 33 and the corresponding solenoid valve 352. In addition, As shown in FIG. 2, the positions of the plurality of storage barrel warning lights 22 of the control device 20 correspond to the positions of the plurality of storage barrel pressure detection modules 35 respectively.

Wherein, as shown in FIG. 2, in a preferred embodiment of the creative pressure control device, the pressure detection system 30 includes a plurality of the total pressure detection modules 34, and the plurality of total pressure detection modules 34 are connected in parallel. Connecting the pipeline 33 and the outlet channel 31, when the pressure control device is in operation, only one of the total pressure detection modules 34 will be activated. If the total pressure detection module 34 being activated is malfunctioning, the operator The total pressure detection module 34 can be replaced in real time to avoid the production line stagnation due to maintenance or replacement of parts.

Furthermore, as shown in FIG. 3, the pressure detection system 30 can further include a backup air inlet passage 36, and the backup air inlet passage 36 is provided with a control valve 361, and the control valve 361 is used to control the inlet passage and In the communication state between the connecting pipelines 33, when the pressure control device is in operation, the control valve 361 is kept in a closed state. If the pressure detection module 35 of the plurality of storage barrels is faulty, the operation Personnel can switch and connect the spare air inlet channel 36 immediately to perform air supply action, thereby effectively avoiding the problem of interruption of air supply caused by maintenance or replacement of parts.

As shown in Figures 1 and 2, the outlet channel 31 can be used to connect a gas supply device, and the inlet channels 351 of the plurality of storage barrel pressure detection modules 35 can be respectively connected to a storage barrel 40 containing liquid gas. And open the corresponding switch valve 354, so that the gas inside the storage barrel 40 can enter the inlet channel 351, the pressure detector 353 can detect the corresponding pressure value inside the inlet channel 351 at any time, and the detected The pressure value is sent back to the processing module 21 of the control device 20 in real time, so that the processing module 21 controls the solenoid valve 352 of the corresponding storage barrel pressure detection module 35 according to the pressure value change to set the inlet channel 351 and the connecting pipeline 33. In addition, the total pressure detector 32 can detect the pressure value inside the outlet channel 31 at any time, and transmit the detected pressure value back to the processing module 21 of the control device 20 in real time. When the pressure value inside the outlet channel 31 is abnormal, the processing module 21 will control the total pressure warning light 23 to light up to remind the operator to go for inspection and maintenance operations.

As shown in Figure 5, when the air supply equipment is running, the processing module 21 of the pressure control equipment controls the solenoid valve 352 of one of the storage barrel pressure detection modules 35 so that the corresponding inlet channel 351 is connected to the connecting pipe At the same time, it controls the solenoid valve 352 of the other storage barrel pressure detection module 35 to close the corresponding inlet channel 351.

When the pressure detector 353 of the storage barrel pressure detection module 35 detects that the pressure value is lower than a certain value, the processing module 21 will control the storage barrel warning light 22 at the corresponding position to light up to remind the operator to prepare for storage. Replacement of the barrel 40; if the pressure detector 353 detects that the pressure value of the corresponding inlet channel 351 is too low, the processing module 21 will control the corresponding solenoid valve 352 to close the corresponding inlet channel 351 and control the other The solenoid valve 352 of the storage barrel pressure detection module 35 connects the corresponding inlet channel 351 with the connecting pipeline 33.

As shown in FIG. 6, if the storage barrel 40 contains liquid gas with a lower temperature, such as liquid argon, the pressure inside the storage barrel 40 will gradually increase with the temperature. When the corresponding pressure detector 353 When it is detected that the pressure value inside the storage barrel 40 is higher than the safe value, the processing module 21 will control the corresponding solenoid valve 352 so that the corresponding inlet channel 351 is connected to the connecting pipeline 33, thereby allowing the storage The liquid gas inside the storage barrel 40 can be vaporized and discharged into the connecting channel for use, and can simultaneously achieve the purpose of pressure relief of the storage barrel 40. When the pressure detector 353 detects the pressure drop inside the storage barrel 40 When the value is below the safe value, the processing module 21 controls the solenoid valve 352 to close the corresponding inlet channel 351.

In summary, the authoring pressure control device can use the pressure detector 353 of the plurality of storage barrel pressure detection modules 35 to detect the corresponding internal pressure value of the storage barrel 40, and the control device 20 can respectively detect the corresponding storage barrel 40 internal pressure value. The internal pressure value of the barrel 40 controls the solenoid valve 352 to communicate or close the corresponding inlet channel 351, thereby achieving the effect of automatically switching the air supply storage barrel 40, and can automatically release the pressure of the storage barrel 40 and effectively use the discharged Gas can not only improve the convenience of operation, but also avoid the interruption of gas supply and reduce the waste of resources and costs.

10: Shell seat

20: control device

21: Processing module

22: Storage barrel warning light

23: Total pressure warning light

30: Pressure detection system

31: Exit channel

32: Total pressure detector

33: Connecting pipeline

34: Total pressure detection module

341: total pressure gauge

342: Open and close valve

35: Storage barrel pressure detection module

351: Entrance Channel

352: Solenoid valve

353: Pressure Detector

354: On-off valve

36: Alternate intake channel

361: control valve

Claims (5)

A pressure control device comprising: a housing; a control device arranged in the housing; and a pressure detection system arranged in the housing, the pressure detection system comprising: an outlet channel, It is arranged in the housing and protrudes from one side of the housing; a total pressure detector is arranged in the outlet channel and is electrically connected to the control device, and the total pressure detector is used for Detecting the pressure value in the outlet channel; a connecting pipeline; at least one total pressure detecting module, which includes a total pressure gauge and two opening and closing valves, the total pressure gauge is connected to the outlet channel and the connecting pipeline, The two opening and closing valves are respectively arranged between the total pressure gauge and the connecting pipeline and the outlet channel, and are used to manually control the communication state between the connecting pipeline and the corresponding total pressure gauge; and a plurality of storage barrels Pressure detection module, the plurality of storage barrel pressure detection modules are respectively connected in parallel to the connecting pipeline, each storage barrel pressure detection module includes an inlet channel, a solenoid valve, a pressure detector and an on-off valve, so The inlet channel is arranged on the shell seat and protrudes from the bottom of the shell seat, the solenoid valve is arranged between the inlet channel and the connecting pipeline, and the solenoid valve is electrically connected to the control device, the pressure The detector is connected to the inlet channel and electrically connected to the control device, the pressure detector is used to detect the pressure value in the inlet channel, the switch valve is arranged between the solenoid valve and the connecting pipeline, And it is used to manually control the communication state between the connecting pipeline and the corresponding solenoid valve. The pressure control device according to claim 1, wherein the pressure detection system includes a plurality of the total pressure detection modules, and the plurality of total pressure detection modules are connected in parallel to the connecting pipeline and the outlet channel. The pressure control device according to claim 1, wherein the pressure detection system includes a backup air inlet channel, the backup air inlet channel is provided with a control valve, and the control valve is used to control the inlet channel and the connecting pipe The state of connectivity between roads. The pressure control device according to claim 2, wherein the pressure detection system includes a backup inlet passage, the backup inlet passage is provided with a control valve, and the control valve is used to manually control the inlet passage and the connection The connection state between the pipelines. The pressure control device according to any one of claims 1 to 4, wherein the control device includes a processing module, a plurality of storage bucket warning lights and a total pressure warning lamp, the plurality of storage bucket warning lights and the total pressure warning The lights are electrically connected to the processing module, and the positions of the warning lights of the plurality of storage barrels of the control device correspond to the positions of the pressure detection modules of the plurality of storage barrels respectively.

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