CN206479274U - Pressure monitor system - Google Patents
Pressure monitor system Download PDFInfo
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- CN206479274U CN206479274U CN201720168529.3U CN201720168529U CN206479274U CN 206479274 U CN206479274 U CN 206479274U CN 201720168529 U CN201720168529 U CN 201720168529U CN 206479274 U CN206479274 U CN 206479274U
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Abstract
The application provides a kind of pressure monitor system, including：The first pressure monitoring device on the gas passage is arranged at, the first pressure for monitoring the gas passage.The second pressure monitoring device being indirectly connected with the gas passage, one or more of atmospheric pressure of first pressure, second pressure and environment for monitoring the gas passage, and the control device being connected respectively with the first pressure monitoring device and second pressure monitoring device, one or more of first pressure, second pressure and atmospheric pressure monitored for the first pressure and second pressure monitoring device that are monitored according to the first pressure monitoring device, control pressure adjusting means.The application is using two sets of pressure monitoring devices, one in first pressure monitoring device and second pressure monitoring device is broken down, and another can work on, it is to avoid the economic loss of user.
Description
Technical field
The application is related to gas pressure detection field, more particularly to a kind of pressure monitor system.
Background technology
The superconducting coil of the low-temperature superconducting type magnet of medical domain is placed in the closed container filled with liquid helium (4K containers),
Its operating temperature is 4.2K (- 268.8 DEG C).Evaporated in closed container except liquid helium also has in liquid helium with its external neck
Helium, therefore certain pressure is had in closed container.Examined from cryogenic magnet function and performance, and security standpoint
Consider, it is necessary to be monitored to the pressure inside magnet.
Have inside service tower at the top of cryogenic magnet between 4K containers and be provided with and press on helium path, service tower
The related gas passage of power control and valve body.The pressure that cryogenic magnet also includes being used to adjust the 4K container inner pressures is adjusted
Regulating device, the pressure-regulating device includes being used for the refrigerator system that liquid helium is condensed again in superconducting magnet, described for heating
Heater of liquid helium etc..Pressure sensor can be installed additional to the pressure inside cryogenic magnet by servicing the gas passage of tower
It is monitored, so that the pressure-regulating device according to the Stress control in the cryogenic magnet.
Prior art is to install pressure sensor additional on service tower gas pressure pipe, and its pressure transmitter signal is sent
Enter magnet control unit, by magnet control unit internal signal modulate circuit, the current signal of representative pressure is switched into voltage
Signal, then send and carries out modulus collection by microprocessor.
Existing scheme has the following disadvantages to the pressure monitoring inside cryogenic magnet：
1st, a Sensor monitoring cryogenic magnet internal pressure is passed through.If sensor fault, cryogenic magnet
It can not work on, more emat sensor need to be shut down, economic loss is brought to user.
If the 2nd, sensor fault, and malfunction fails to be recognized by magnet control unit.For example measured deviation increases,
Magnet control unit can not control effectively to cryogenic magnet pressure, there is cryogenic magnet and be internally formed negative pressure
Situation, causes air to penetrate into by servicing tower tube road and meet low temperature icing aggegation, and danger will be caused by blocking pressure release and exhaust outlet.
Utility model content
In view of this, the application provides a kind of pressure detecting system.
Specifically, the application is achieved by the following technical solution：
A kind of pressure monitor system, for by monitoring the pressure command pressure adjusting means in tank atmosphere path, with
The air pressure of the container is adjusted, including：
The first pressure monitoring device on the gas passage is arranged at, the first pressure for monitoring the gas passage
Power；
The second pressure monitoring device being indirectly connected with the gas passage, the first pressure for monitoring the gas passage
One or more of atmospheric pressure of power, second pressure and environment；
And the control device being connected respectively with the first pressure monitoring device and second pressure monitoring device, for root
First pressure that the first pressure and second pressure monitoring device monitored according to the first pressure monitoring device is monitored, second
One or more of pressure and atmospheric pressure, control the pressure-regulating device.
Further, the first pressure and the second pressure are respectively the absolute pressure or relative of the gas passage
One kind in pressure.
Further, the first pressure monitoring device includes first pressure sensor, the second pressure monitoring device
Including second pressure sensor；
Or, the first pressure monitoring device includes first pressure sensor, the second pressure monitoring device includes the
Two pressure sensors and the 3rd pressure sensor.
Further, the control device is connected with the gas passage by manifold；The control device includes control
Plate and processor.
Further, the first pressure sensor, is arranged on the gas passage, for detecting the gas passage
Absolute pressure；
The second pressure sensor is arranged on the control panel and is connected with the manifold, the second pressure sensing
Device is used for the relative pressure or absolute pressure for detecting the gas passage.
Further, the 3rd pressure sensor is arranged on the control panel, the atmospheric pressure for detecting environment.
Further, the first pressure sensor, is arranged on the gas passage, for detecting the gas passage
Relative pressure；
The second pressure sensor is arranged on the control panel and is connected with the manifold, for detecting the gas
The absolute pressure or relative pressure of path.
Further, the 3rd pressure sensor is arranged on the control panel, for detecting the gas passage
Absolute pressure or relative pressure.
Further, the first pressure sensor, the second pressure sensor and the 3rd pressure sensor point
Wei not absolute pressure transducer, single-chip integration absolute pressure transducer, single-chip integration differential pressure pickup and single-chip integration gauge pressure biography
One kind in sensor.
Further, the first pressure monitoring device also includes current-to-voltage converting circuit.
The application pressure monitor system is using two sets of pressure monitoring devices, first pressure monitoring device and second pressure monitoring
One in device is broken down, another can work on, it is to avoid the economic loss of user.In addition, if wherein one
Individual pressure monitoring device is broken down, and the pressure value that control device can be detected according to another pressure monitoring device is adjusted to pressure
Device is control effectively, it is to avoid pressure detecting system is caused according to the monitoring device Wrong control pressure-regulating device of failure
Danger.
Brief description of the drawings
Fig. 1 is the module diagram of the pressure monitor system of the application in one embodiment.
Fig. 2 is the module diagram of the pressure monitor system of the application in another embodiment.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects be described in detail in claims, the application.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the application
A little information should not necessarily be limited by these terms.These terms are only used for same type of information being distinguished from each other out.For example, not departing from
In the case of the application scope, the first information can also be referred to as the second information, similarly, and the second information can also be referred to as
One information.Depending on linguistic context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determining ".
Referring to Fig. 1, the application provides a kind of pressure monitor system, for by monitoring the pressure in tank atmosphere path 5
Power control pressure adjusting means, to adjust the air pressure of the container.The pressure monitor system includes first pressure monitoring device
1st, second pressure monitoring device 2, and connect respectively with the first pressure monitoring device 1 and the second pressure monitoring device 2
The control device 3 connect.Wherein：
First pressure monitoring device 1 is arranged on the gas passage 5, the first pressure for monitoring the gas passage 5
Power.Second pressure monitoring device 2 is indirectly connected with the gas passage 5, for monitor the gas passage 5 first pressure,
One or more of atmospheric pressure of second pressure and environment.The control device 3 is used to be monitored according to the first pressure
In first pressure, second pressure and atmospheric pressure that the first pressure and second pressure monitoring device 2 that device 1 is monitored are monitored
It is one or more, control the pressure-regulating device so that the air pressure in the container rises, declines or maintained balance etc..
During the first pressure and the second pressure can be respectively the absolute pressure or relative pressure of the gas passage 5
One kind.The relative pressure is absolute pressure (absolute pressure refers to using vacuum as zero point) in gas passage 5 relative to air
The pressure difference pressure of pressure.The absolute pressure value of the gas passage 5 of monitoring be equal to gas passage 5 relative pressure and environment it is big
Air pressure force value sum.Therefore, control device 3 can be detected according to first pressure monitoring device 1 and second pressure monitoring device 2
The first pressure, second pressure and/or atmospheric pressure control pressure in the pressure-regulating device regulation container, also may be used
To judge whether the pressure value that first pressure monitoring device 1 and second pressure monitoring device 2 are detected is normal by contrast, so that
The pressure-regulating device is controlled according to normal pressure monitoring device is monitored.Avoid the user caused by pressure monitoring device failure
Economic loss and device damage.The application is further described by taking the pressure detecting in cryogenic magnet as an example below.
The cryogenic magnet includes the closed container 7, service tower 6 and gas passage 5 being sequentially connected.
Referring to Fig. 1, the first pressure monitoring device 1 includes first pressure sensor 11, the second pressure monitoring
Device 2 includes the pressure sensor 22 of second pressure sensor 21 and the 3rd.The control device 3 passes through with the gas passage 5
Manifold 4 is connected；The control device 3 includes control panel (not shown) and processor 31.It is the first pressure sensor 11, described
Second pressure sensor 21 and the 3rd pressure sensor 22 can be respectively absolute pressure transducer, single-chip integration absolute pressure
One kind in sensor, single-chip integration differential pressure pickup and single-chip integration gauge pressure transducer.
The first pressure sensor 11 is used for the absolute pressure for detecting the gas passage 5, is arranged at the gas and leads to
On road 5.The second pressure sensor 21 is arranged on the control panel and is connected with the manifold 4, and the second pressure is passed
Sensor 21 is used for the relative pressure for detecting the gas passage 5.3rd pressure sensor 22 is used for the air for detecting environment
Pressure, is arranged on the control panel.
The pressure sensor class that first pressure sensor 11, the pressure sensor 22 of second pressure sensor 21 and the 3rd are selected
Type difference has different embodiments.For example：
As shown in figure 1, absolute pressure transducer of the first pressure sensor 11 using 4-20mA transmitter interfaces
(Absolute Pressure Sensor), the pressure piping of the service tower 6 is accessed with the mode of threaded connection.The pressure
The pressure of pipeline is identical with the pressure of the gas passage 5, can also be directly accessed the gas passage 5.Passed by first pressure
Absolute pressure inside the closed container 7 of the detection cryogenic magnet of sensor 11.The second pressure sensor 21 uses monolithic
Integrated gauge pressure transducer (Gauge Pressure Sensor), is integrated in by way of welding on the control panel.Described
Two pressure sensors 21 are connected with the manifold 4, the relative pressure that detection is introduced inside the closed container 7 in manifold 4.The discrimination
Pipe 4 uses Teflon flexible pipe, and the pressure inside gas passage 5 is introduced into the second pressure sensor 21.3rd pressure
Sensor 22 uses single-chip integration absolute pressure transducer, is integrated in by way of welding on the control panel.3rd pressure
Sensor 22 detects the atmospheric pressure of cryogenic magnet working environment.
The pressure value that the control device 3 can be gathered according to three pressure sensors judges the pressure in closed container 7
It is whether normal, and control the pressure-regulating device.For example, the absolute pressure is more than or less than the relative pressure and institute
Atmospheric pressure sum is stated, then has a pressure monitoring device failure.Now the control device 3 can send fault warning, or root
The relative pressure detected according to second monitoring device 2 controls the pressure-regulating device.
Due to absolute pressure transducer of first monitoring device 1 using 4-20mA transmitter interfaces, connect by bolt
Enter the pressure piping of the service tower 6, and have exposed connecting line, be very easy to damage, the control device 3 is in monitoring device
The pressure command pressure adjusting means that acquiescence is detected using second monitoring device 2 during failure.In addition, in pressure monitor system
During startup, the pressure monitor system can also realize self-checking function.Such as described control device 3 according to the absolute pressure whether
Equal to the relative pressure and the atmospheric pressure sum, pressure monitor system is malfunction if unequal, if phase
It is normal Deng then pressure monitor system.
In other implementations, it may be arranged as：
First pressure sensor 11 is monitored in closed container 7 using the absolute pressure transducer of 4-20mA transmitter interfaces
The absolute pressure in portion.Second pressure sensor 21 is using differential pressure pickup (Differential Pressure Sensor), prison
Survey the relative pressure of manifold 4.3rd pressure sensor 22 uses single-chip integration absolute pressure transducer, the atmospheric pressure of monitoring of environmental
Power.
Or, first pressure sensor 11 is monitored in closed container 7 using the gauge pressure transducer of 4-20mA transmitter interfaces
The relative pressure in portion.Second pressure sensor 21 uses single-chip integration differential pressure pickup, monitors the relative pressure of manifold 4.3rd
Pressure sensor 22 uses single-chip integration absolute pressure transducer, the atmospheric pressure of monitoring of environmental.First sensor 11 and second
Two relative pressures that sensor 21 is monitored are different, and the control device 3 gives tacit consent to the failure of first sensor 11, and according to institute
The relative pressure for stating the monitoring of second sensor 21 controls the pressure-regulating device.
Or, first pressure sensor 11 monitors closed hold using the absolute pressure transducer of 4-20mA transmitter interfaces
Absolute pressure inside device 7；Second pressure sensor 21 uses single-chip integration absolute pressure transducer, monitors the absolute of manifold 4
Pressure.3rd pressure sensor 22 uses single-chip integration absolute pressure transducer, the atmospheric pressure of monitoring of environmental.First sensor
11 and two absolute pressures monitoring of second sensor 21 it is different, the control device 3 gives tacit consent to the failure of first sensor 11,
And the absolute pressure monitored according to the second sensor 21 controls the pressure-regulating device.
Or, the first pressure sensor 11 monitors closed hold using the gauge pressure transducer of 4-20mA transmitter interfaces
Relative pressure inside device 7；The second pressure sensor 21 uses single-chip integration gauge pressure transducer, monitors the relative of manifold 4
Pressure.3rd pressure sensor 22 uses single-chip integration absolute pressure transducer, monitors cryogenic magnet working environment
Atmospheric pressure.Two relative pressures that first sensor 11 and second sensor 21 are monitored are different, the control device 3
Give tacit consent to the failure of first sensor 11, and the relative pressure monitored according to the second sensor 21 controls the pressure regulation to fill
Put.
Further, the atmospheric pressure of the 3rd pressure sensor 22 monitoring, can be used for the sea for detecting working environment
High computational is pulled out, reference frame is provided for the control of cryogenic magnet.
The first pressure monitoring device 1 also includes the current-to-voltage converting circuit 12 being arranged on control panel, for inciting somebody to action
The current signal that first pressure sensor 11 is detected is converted to voltage signal, is transferred to the processor of control device 3.
In above-mentioned each embodiment, the pressure sensor 22 of second pressure sensor 21 and the 3rd is integrated in the control
In making sheet, the two output signal type is voltage signal, is available for the processor of the control device 3 to carry out ADC modulus collections, no
Need current-to-voltage converting circuit.The pressure sensor 22 of second pressure sensor 21 and the 3rd is set using single chip integrated mode
Put on control panel, it is high, internal with temperature-compensating, application circuit be simple, the friendly, cost with microprocessor interface with precision
Low, peripheral cell is few, output voltage signal, circuit debugging and confirm simple advantage.Because control device 3 is connected by manifold 4
Cryogenic magnet is connect, away from the cryogenic magnet, at the pressure sensor 22 of second pressure sensor 21 and the 3rd
In the distal end of the cryogenic magnet, such as breaking down can change and repair at any time, not influence equipment to run.Second pressure
The pressure sensor 22 of force snesor 21 and the 3rd is installed in control device 3, is not easily susceptible to extraneous damage.
Display instrument also can be set for the other pressure monitor system or alarm set is connected with the control device, is easy to
The pressure value of operating personnel's observation contrast two pressure monitoring devices monitoring, and then preferably control device, such as magnetic resonance into
As equipment.
Referring to Fig. 2, another pressure monitor system that the application is provided, is described with the system difference shown in Fig. 1
Second pressure monitoring device 2 includes second pressure sensor 21, not including the 3rd pressure sensor 22.It is described in this embodiment
First pressure sensor 11 is used for the absolute pressure or relative pressure for detecting the gas passage 5, is arranged at the gas passage 5
On.The second pressure sensor 21 is used for the absolute pressure or relative pressure for detecting the gas passage 5, is arranged at the control
It is connected in making sheet and with the manifold 4.
First pressure sensor 11 is different with the pressure sensor types that second pressure sensor 21 is selected with different
Embodiment.For example：
First pressure sensor 11 is monitored in closed container 7 using the absolute pressure transducer of 4-20mA transmitter interfaces
The absolute pressure in portion；Second pressure sensor 21 uses single-chip integration absolute pressure transducer, monitors the absolute pressure of manifold 4.
Or, first pressure sensor 11 is monitored in closed container 7 using the gauge pressure transducer of 4-20mA transmitter interfaces
The relative pressure in portion；Second pressure sensor 21 uses single-chip integration gauge pressure transducer, monitors the relative pressure of manifold 4.
Or, first pressure sensor 11 is monitored in closed container 7 using the gauge pressure transducer of 4-20mA transmitter interfaces
The relative pressure in portion；Second pressure sensor 21 uses single-chip integration differential pressure pickup, monitors the relative pressure of manifold 4.
Due to using the pressure sensor of 4-20mA transmitter interfaces, needing configuration current-voltage to turn on interface circuit
Change circuit, it is more that the circuit is related to electronic component, high to component precision prescribed.The probability of failure of the circuit is high, property
It can detect and precision calibration process is complicated, it is fragile.Again because single-chip integration formula Pressure Sensor Precision is high, internal with temperature
Degree compensation, application circuit are simple, very low with microprocessor interface close friend, fault rate, are hardly damaged.So the control device 3
The failure of the first monitoring device 1 is defaulted as in sensor fault, the control device 3 sends alarm or according to the second monitoring device
The absolute pressure of 2 monitorings controls the pressure-regulating device.
The control device 3 can by contrastive detection to two absolute pressures or two relative pressures judge that sensor is
It is no to break down.For example, the absolute pressure of the closed container 7 of the monitoring of the control device 3 contrast first pressure sensor 11 and
The absolute pressure for the manifold that second pressure sensor 21 is monitored, if two absolute pressures, is judged as that first pressure is sensed
The failure of device 11.
Except the combination for first sensor, second sensor and the 3rd sensor enumerated in such as 1 and Fig. 2 embodiment
Outside, there are other application combinations, should also belong to the application protection domain, will not be repeated here.
In summary, the independent monitoring closed container 7 of the first pressure monitoring device 1, the second detection device 2
Independent monitoring closed container 7, the pressure value of the two monitoring can be complementary.The control device 3 is according to the absolute of gas passage 5
Pressure value is equal to the relation of the relative pressure of gas passage 5 and the atmospheric pressure value sum of environment, can determine whether that first pressure is supervised
Survey device 1 and whether second detection device 2 breaks down., can be by second pressure when first pressure monitoring device 1 breaks down
The adapter pressure monitoring of monitoring device 2 works.In addition, the pressure monitor system can carry out the self diagnosis of the state of system and standby
Part.
Most can quickly to provide magnet inside and outside for single-chip integration formula sensor in the second pressure monitoring device 2
Pressure differential environment output signal, reference frame is provided for magnet control.3rd pressure sensor 22 of second pressure monitoring device 2 is adopted
With single-chip integration formula absolute pressure transducer collecting work ambient pressure, it is used for absolute pressure except being combined with gauge pressure transducer
Calculate, also be used to detect that the height above sea level of working environment is calculated, reference frame is provided for the control of cryogenic magnet.
The preferred embodiment of the application is the foregoing is only, not to limit the application, all essences in the application
God is with principle, and any modification, equivalent substitution and improvements done etc. should be included within the scope of the application protection.
Claims (10)
1. a kind of pressure monitor system, for by monitoring the pressure command pressure adjusting means in tank atmosphere path, to adjust
Save the air pressure of the container, it is characterised in that including：
The first pressure monitoring device on the gas passage is arranged at, the first pressure for monitoring the gas passage；
The second pressure monitoring device being indirectly connected with the gas passage, for monitor the gas passage first pressure,
One or more of atmospheric pressure of second pressure and environment；
And the control device being connected respectively with the first pressure monitoring device and second pressure monitoring device, for according to institute
State first pressure, second pressure that the first pressure and second pressure monitoring device that first pressure monitoring device monitors are monitored
One or more of with atmospheric pressure, control the pressure-regulating device.
2. pressure monitor system according to claim 1, it is characterised in that the first pressure and the second pressure point
Not Wei the gas passage absolute pressure or relative pressure in one kind.
3. pressure monitor system according to claim 1, it is characterised in that the first pressure monitoring device includes first
Pressure sensor, the second pressure monitoring device includes second pressure sensor；
Or, the first pressure monitoring device includes first pressure sensor, the second pressure monitoring device includes the second pressure
Force snesor and the 3rd pressure sensor.
4. pressure monitor system according to claim 3, it is characterised in that the control device leads to the gas passage
Cross manifold connection；The control device includes control panel and processor.
5. pressure monitor system according to claim 4, it is characterised in that the first pressure sensor, is arranged at institute
State on gas passage, the absolute pressure for detecting the gas passage；
The second pressure sensor is arranged on the control panel and is connected with the manifold, and the second pressure sensor is used
In the relative pressure or absolute pressure that detect the gas passage.
6. pressure monitor system according to claim 5, it is characterised in that the 3rd pressure sensor is arranged at described
On control panel, the atmospheric pressure for detecting environment.
7. pressure monitor system according to claim 4, it is characterised in that the first pressure sensor, is arranged at institute
State on gas passage, the relative pressure for detecting the gas passage；
The second pressure sensor is arranged on the control panel and is connected with the manifold, for detecting the gas passage
Absolute pressure or relative pressure.
8. pressure monitor system according to claim 7, it is characterised in that the 3rd pressure sensor is arranged at described
On control panel, absolute pressure or relative pressure for detecting the gas passage.
9. pressure monitor system according to claim 4, it is characterised in that the first pressure sensor, described second
Pressure sensor and the 3rd pressure sensor are respectively absolute pressure transducer, single-chip integration absolute pressure transducer, list
One kind in the integrated differential pressure pickup of piece and single-chip integration gauge pressure transducer.
10. pressure monitor system according to claim 1, it is characterised in that the first pressure monitoring device also includes
Current-to-voltage converting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720168529.3U CN206479274U (en) | 2017-02-23 | 2017-02-23 | Pressure monitor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720168529.3U CN206479274U (en) | 2017-02-23 | 2017-02-23 | Pressure monitor system |
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| Publication Number | Publication Date |
|---|---|
| CN206479274U true CN206479274U (en) | 2017-09-08 |
Family
ID=59746838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720168529.3U Active CN206479274U (en) | 2017-02-23 | 2017-02-23 | Pressure monitor system |
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| Country | Link |
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| CN (1) | CN206479274U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111557596A (en) * | 2020-04-26 | 2020-08-21 | 郭瑞 | Pump pressure type coffee machine brewing kettle with pressure control function and pressure control method |
| CN111954561A (en) * | 2018-04-16 | 2020-11-17 | 彼得·卡玛 | Face-based frame rate upsampling for video telephony |
| CN112519738A (en) * | 2019-09-18 | 2021-03-19 | 广州汽车集团股份有限公司 | Vacuum-assisted brake system, brake control method, and brake control apparatus |
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2017
- 2017-02-23 CN CN201720168529.3U patent/CN206479274U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111954561A (en) * | 2018-04-16 | 2020-11-17 | 彼得·卡玛 | Face-based frame rate upsampling for video telephony |
| CN112519738A (en) * | 2019-09-18 | 2021-03-19 | 广州汽车集团股份有限公司 | Vacuum-assisted brake system, brake control method, and brake control apparatus |
| CN112519738B (en) * | 2019-09-18 | 2022-04-26 | 广州汽车集团股份有限公司 | Vacuum-assisted brake system, brake control method, and brake control apparatus |
| CN111557596A (en) * | 2020-04-26 | 2020-08-21 | 郭瑞 | Pump pressure type coffee machine brewing kettle with pressure control function and pressure control method |
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