CN216081888U - Pressure measuring device - Google Patents
Pressure measuring device Download PDFInfo
- Publication number
- CN216081888U CN216081888U CN202121771400.4U CN202121771400U CN216081888U CN 216081888 U CN216081888 U CN 216081888U CN 202121771400 U CN202121771400 U CN 202121771400U CN 216081888 U CN216081888 U CN 216081888U
- Authority
- CN
- China
- Prior art keywords
- pressure
- vacuum
- detection gas
- measuring device
- electromagnetic valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to a pressure measuring device, which comprises a detection gas circuit, a pressure sensor and a pressure sensor, wherein a joint is connected to the detection gas circuit; the detection gas path is also connected with a pressure gauge, an electromagnetic valve and a vacuum measuring device in series, a joint is connected to one end of the detection gas path close to the pressure gauge, and a pressure switch is connected between the electromagnetic valve and the joint on the detection gas path; the electromagnetic valve is connected with a power supply loop, and the pressure switch is used for detecting the pressure in the detection gas path and controlling the on-off of the power supply loop according to the detected pressure value so as to control the on-off of the electromagnetic valve; the pressure switch is provided with a set pressure value, and the pressure switch controls the electromagnetic valve to be closed when the pressure value in the detection gas path is greater than the set pressure value. The pressure measuring device can detect the device to be detected in a vacuum state and the device to be detected in an inflation state, and can be directly connected with the device to be detected for detection when in use.
Description
Technical Field
The present invention relates to a pressure measuring device.
Background
When the vacuum pumping device and the sulfur hexafluoride gas recovery device are tested and the high-voltage switch device is overhauled and vacuumized on site, whether the devices are in a vacuum state or an inflation state (the inflation state generally refers to the inflation of insulating gas) needs to be detected, the devices which need to detect the internal vacuum or inflation are collectively called as devices to be detected, and whether the devices to be detected (such as the high-voltage switch device and the like) are inflated or in a vacuum state is judged by detecting the interior of the devices to be detected.
When treating that detection device is inside to examine among the prior art, do not have one set of dedicated pressure measurement device to detect it, be in vacuum state or when the inflation state in the detection device is waited in the judgement, external manometer or vacuum measurement device detect the pressure value in the detection device usually, need insert different pressure measurement table promptly and detect, then need preliminary judgement in advance before the detection and wait to detect whether be in vacuum or inflation device in the detection device, consequently, need one set of dedicated pressure measurement device to detect the pressure value in the detection device.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a special pressure measuring device which can measure a vacuum value and a positive pressure value.
The pressure measuring device adopts the following technical scheme:
a pressure measurement device, comprising: the detection gas path is connected with a joint which is used for being connected with the device to be detected so as to enable the detection gas path to be communicated with the interior of the device to be detected;
the detection gas path is also connected with a pressure gauge, an electromagnetic valve and a vacuum measuring device in series, a joint is connected to one end of the detection gas path close to the pressure gauge, and a pressure switch is connected between the electromagnetic valve and the joint on the detection gas path;
the electromagnetic valve is connected with a power supply loop, and the pressure switch is used for detecting the pressure in the detection gas path and controlling the on-off of the power supply loop according to the detected pressure value so as to control the on-off of the electromagnetic valve;
the pressure switch is provided with a set pressure value, and the pressure switch controls the electromagnetic valve to be closed when the pressure value in the detection gas path is greater than the set pressure value.
The beneficial effects are that: according to the pressure measuring device, a connector on a detection gas path is used for being communicated with the interior of the device to be detected, a pressure gauge and a vacuum measuring device are arranged on the detection gas path at the same time, an electromagnetic valve is arranged between the pressure gauge and the vacuum measuring device, whether the pressure gauge is used for detecting the pressure value or the vacuum measuring device is used for detecting the pressure value is judged by detecting the pressure value in the gas path through a pressure switch, the electromagnetic valve is closed when the pressure value in the detection gas path is larger than the set pressure according to the self set pressure value of the pressure switch, at the moment, only the pressure gauge is communicated with the interior of the device to be detected, the vacuum measuring device is protected from being damaged by high-pressure impact, otherwise, when the pressure value is lower than the set pressure value, the electromagnetic valve is opened, and the vacuum measuring device is communicated with the device to be detected. The pressure measuring device can detect the device to be detected in a vacuum state and the device to be detected in an inflation state, and can be directly connected with the device to be detected for detection when in use.
Furthermore, the set value of the pressure switch is 0, the critical value of the positive pressure and the negative pressure is used as the set value of the pressure switch, and whether the vacuum meter is connected or not is determined according to the negative pressure to be detected by the vacuum meter.
Further, in order to facilitate the control connection of the pressure switch and the power supply loop of the electromagnetic valve, the pressure switch is connected to the position, located between the pressure gauge and the electromagnetic valve, of the detection gas circuit.
Furthermore, the joint is a self-sealing joint, the self-sealing joint is opened when being connected with a joint on a device to be detected, so that the detection gas circuit is communicated with the interior of the device to be detected, the self-sealing joint is opened when being connected with the joint, and the detection gas circuit is closed when being disconnected.
Further, in order to verify a pressure gauge or a vacuum measuring device on the device to be detected, the pressure gauge is a standard pressure gauge, and the vacuum measuring device is a standard vacuum measuring device.
Further, in order to display the vacuum value more intuitively, the vacuum measuring device comprises a vacuum gauge probe and a vacuum display instrument connected to the vacuum gauge probe.
Further, the pressure measuring device further comprises a box body, the detection gas circuit is arranged in the box body, and the vacuum display instrument is arranged on the front side panel of the box body, so that reading is convenient to observe.
Further, for convenient carrying, the pressure measurement device further comprises a box body, the detection gas circuit is arranged in the box body, and a handle is arranged at the top of the box body.
Further, in order to facilitate connection of the joint and the device to be detected, the joint is connected with the detection air path through a connecting hose, and the connecting hose is located outside the box body or is provided with a pipe section located outside the box body.
Furthermore, in order to conveniently read the pressure gauge, the front side panel of the box body is provided with a mounting opening, and the pressure gauge is mounted in the mounting opening so as to observe the numerical value displayed by the pressure gauge.
Drawings
FIG. 1 is a schematic diagram of an embodiment 1 of a pressure measurement device of the present invention;
FIG. 2 is a schematic structural view of an embodiment 1 of a pressure measuring device according to the present invention;
FIG. 3 is a top view of FIG. 2;
in the figure: 1. a joint; 2. a connecting hose; 3. a pressure gauge; 4. a pressure switch; 5. an electromagnetic valve; 6. a vacuum gauge probe; 7. a vacuum display instrument; 8. a box body; 9. a handle; 10. and a button is switched on and off.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
The solenoid valve 5 that concatenates on detecting the gas circuit sets up between manometer and vacuum gauge probe, and when solenoid valve 5's case closed, only manometer 3 can detect the pressure in the gas circuit of detecting. When the valve core of the electromagnetic valve 5 is opened, the vacuum gauge probe 6 is communicated with the pressure gauge 3, and the vacuum gauge probe 6 can detect the pressure in the gas detection gas circuit.
The position between the electromagnetic valve and the pressure gauge on the detection gas path is connected with a pressure switch 4, the pressure switch 4 is used for detecting the pressure in the detection gas path, the pressure switch 4 is the existing mature technology, the pressure switch 4 is provided with a pressure sensor, and the pressure sensor is used for detecting the pressure in the gas path. The electromagnetic valve 5 is connected with a power supply circuit (not shown in the figure), and the pressure switch 4 controls the on-off of the power supply circuit according to the detected pressure value, so as to control the on-off of the electromagnetic valve. The pressure switch 4 has a set pressure value, in this embodiment, the set pressure value of the pressure switch 4 is 0, and when the pressure value is greater than the set value 0, that is, the pressure in the air path is positive pressure at this time, so as to avoid the positive pressure from impacting the vacuum gauge probe 6 to damage the vacuum gauge probe, the valve core of the electromagnetic valve 5 is controlled by the pressure switch 4 to be closed, and the vacuum gauge probe 6 is disconnected from the air path at this time, thereby protecting the vacuum gauge probe. And otherwise, the pressure switch controls the electromagnetic valve to be opened, the vacuum gauge probe 6 is connected into the gas circuit, and the vacuum value in the gas circuit is detected.
In this embodiment, the installing port has been seted up on the front side panel of box, and manometer 3 inlays the dress in the installing port, makes things convenient for operating personnel to observe the numerical value on the manometer. The vacuum display instrument 7 is an electronic display instrument and can visually display the measured vacuum value, and the vacuum display instrument 7 is installed on the front side panel of the box body, so that an operator can conveniently observe the vacuum value. The electromagnetic valve 5 and the vacuum gauge probe 6 are both arranged in the box body.
In this embodiment, the joint 1 is a self-sealing joint, which is a conventional known structure and belongs to a quick joint structure, for example, a utility model with the publication number of CN2842138Y discloses a self-sealing joint for pipes, which is in a sealing state in an initial state and is connected to a joint on a pressure vessel to be tested. The self-sealing joint is connected with the detection gas circuit through a connecting hose 2, and the connecting hose 2 is positioned outside the box body or is partially outside the box body.
The pressure measuring device of the utility model is used specifically:
in the first case, vacuum measurement and verification (negative pressure, e.g., vacuum test with vacuum extractor, recovery device).
(1) Connecting the vacuum-pumping device or the recovery device to a 1m3And the container is used for connecting the pressure measuring device to a container bypass vent path through the self-sealing joint 1.
(2) And measuring the vacuum degree after the vacuumizing is finished, and firstly reading the vacuum degree displayed by a vacuum measuring device arranged on the vacuumizing device or the recovery device.
(3) The pressure gauge 3 on the pressure measuring device displays that the pressure is negative pressure, the pressure switch 4 is opened, the electromagnetic valve 5 is opened, and the vacuum gauge probe 6 detects the vacuum degree and displays the vacuum degree on the vacuum display instrument 7.
(4) Reading the vacuum degree reading on the vacuum display instrument 7, namely, the detected vacuum degree, comparing the reading with the vacuum measurement device carried by the vacuumizing device or the recovery device to display the vacuum degree, and checking the vacuum measurement device carried by the vacuumizing device or the recovery device.
In addition, when the switch air chamber is vacuumized before the high-voltage switch is inflated, the measurement process is the same as the above.
In the second case, pressure gauge measurement and verification (positive pressure, e.g., pressure gauge verification on recovery unit, high pressure switch).
(1) And connecting the pressure measuring device to a recovery device or a bypass air passage of a high-voltage switch through a self-sealing joint 1.
(2) The pressure value that portable pressure measurement device went up the display of manometer 3 is accurate pressure reading in the gas circuit promptly, and pressure switch 4 is in the off-state this moment, and solenoid valve 5 is in the off-state, and then the protection vacuum gauge probe avoids the malleation to strike the damage.
(3) And reading a pressure reading on the pressure gauge 3, namely, a pressure value required to be detected, comparing the reading with a pressure gauge display reading carried by the recovery device or the high-voltage switch, and checking the pressure gauge carried by the recovery device or the high-voltage switch.
In the third case, a measurement of a vessel of unknown gas pressure.
(1) The pressure measuring device is connected to the vessel by a self-sealing joint 1.
(2) If the pressure value in the container is greater than 0, the pressure switch 4 is closed, and the electromagnetic valve 5 is correspondingly closed, so that the probe of the vacuum gauge is protected from being damaged by positive pressure impact. Reading the reading of the pressure gauge 3 to obtain the pressure value in the container.
(3) If the pressure in the container is less than or equal to 0, the pressure switch 4 is opened, the electromagnetic valve 5 is correspondingly controlled to be opened, and the vacuum gauge probe 6 detects the vacuum degree and displays the vacuum degree on the vacuum display instrument 7. The reading of the vacuum display instrument 7 is the vacuum degree in the container.
As another embodiment of the present invention, it is different from embodiment 1 only in that: the pressure gauge and the vacuum measuring device in embodiment 1 are standard and can be used for verifying the pressure gauge and the vacuum measuring device on the device to be detected, but in this embodiment, the pressure gauge and the vacuum measuring device are not standard, i.e. have no verifying function.
As another embodiment of the present invention, it is different from embodiment 1 only in that: in embodiment 1, the pressure switch is disposed between the solenoid valve and the pressure gauge, so that the pressure switch can be conveniently connected to the power supply circuit of the solenoid valve. In this embodiment, the pressure switch is disposed between the pressure gauge and the self-sealing joint.
As another embodiment of the present invention, it is different from embodiment 1 only in that: the pressure measurement device does not include a tank structure.
As another embodiment of the present invention, it is different from embodiment 1 only in that: the self-sealing joint is directly connected to one end of the detection gas circuit without a connecting hose.
As another embodiment of the present invention, it is different from embodiment 1 only in that: the joint may be a general joint having no self-sealing function.
As another embodiment of the present invention, it is different from embodiment 1 only in that: the vacuum measuring device is a mechanical vacuum gauge with a gauge head.
As another embodiment of the present invention, it is different from embodiment 1 only in that: the pressure gauge and the vacuum measuring device may not be installed on the front side panel of the box body, and the pressure gauge and the vacuum measuring device may be respectively arranged on one side of the box body in a suspended manner.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. A pressure measurement device, characterized by; the method comprises the following steps:
the detection gas path is connected with a joint (1) which is used for being connected with the device to be detected so as to enable the detection gas path to be communicated with the interior of the device to be detected;
a pressure gauge (3), an electromagnetic valve (5) and a vacuum measuring device are sequentially connected in series on the detection gas path, a connector (1) is connected to one end of the detection gas path, which is close to the pressure gauge (3), and a pressure switch (4) is connected between the electromagnetic valve (5) and the connector (1) on the detection gas path;
the electromagnetic valve (5) is connected with a power supply loop, and the pressure switch (4) is used for detecting the pressure in the detection gas path and controlling the on-off of the power supply loop according to the detected pressure value so as to control the on-off of the electromagnetic valve (5);
the pressure switch (4) is provided with a set pressure value, and the pressure switch (4) controls the electromagnetic valve (5) to be closed when the pressure value in the detection gas path is greater than the set pressure value.
2. A pressure measurement device as claimed in claim 1, characterized in that; the set value of the pressure switch (4) is 0.
3. A pressure measurement device as claimed in claim 1, characterized in that; the pressure switch (4) is connected to a position, located between the pressure gauge (3) and the electromagnetic valve (5), of the detection gas circuit.
4. A pressure measurement device as claimed in claim 1, characterized in that; the joint (1) is a self-sealing joint, and the self-sealing joint is opened when being connected with a joint on a device to be detected so as to enable the detection gas path to be communicated with the interior of the device to be detected.
5. A pressure measurement device as claimed in claim 1, characterized in that; the pressure gauge (3) is a standard pressure gauge (3), and the vacuum measuring device is a standard vacuum measuring device.
6. A pressure measurement device as claimed in claim 1, characterized in that; the vacuum measuring device comprises a vacuum gauge probe (6) and a vacuum display instrument (7) connected to the vacuum gauge probe (6).
7. A pressure measuring device as claimed in claim 6, characterized in that; the pressure measuring device further comprises a box body (8), the detection gas circuit is arranged in the box body (8), and the vacuum display instrument (7) is arranged on the front side panel of the box body (8).
8. A pressure measuring device as claimed in any one of claims 1 to 6, characterized in that; the pressure measuring device further comprises a box body (8), the detection gas circuit is arranged in the box body (8), and a handle (9) is arranged at the top of the box body (8).
9. A pressure measurement device as claimed in claim 8, characterized in that; the connector (1) is connected with the detection gas circuit through a connecting hose (2), and the connecting hose (2) is located outside the box body or is provided with a pipe section located outside the box body.
10. A pressure measurement device as claimed in claim 8, characterized in that; the front side panel of the box body (8) is provided with a mounting opening, and the pressure gauge (3) is mounted in the mounting opening so as to observe the numerical value displayed by the pressure gauge (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121771400.4U CN216081888U (en) | 2021-07-30 | 2021-07-30 | Pressure measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121771400.4U CN216081888U (en) | 2021-07-30 | 2021-07-30 | Pressure measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216081888U true CN216081888U (en) | 2022-03-18 |
Family
ID=80667515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121771400.4U Active CN216081888U (en) | 2021-07-30 | 2021-07-30 | Pressure measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216081888U (en) |
-
2021
- 2021-07-30 CN CN202121771400.4U patent/CN216081888U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2884252A2 (en) | Manifold assembly for a portable leak tester | |
| CN216081888U (en) | Pressure measuring device | |
| CN109916568A (en) | Electric machine controller sealing propertytest system, device and method | |
| CN207991747U (en) | A kind of full-automatic pressure sensor batch detection calibration console | |
| CN212871600U (en) | A device for manometer measurement detects | |
| CN205785703U (en) | A kind of method of cumulative scale leak detection system | |
| CN112665782A (en) | Gas pressure online monitoring system and online monitoring method | |
| CN207540718U (en) | A kind of multichannel air-tightness tester | |
| CN207851267U (en) | A kind of density monitor on-line testing device | |
| CN205786119U (en) | A kind of liquefied petroleum gas steel cylinder water test unit | |
| CN107796574A (en) | A kind of aircraft is airtight to check complex control system and its application method | |
| CN106443407A (en) | Mini-type high-temperature and high-pressure test system and method | |
| CN208888063U (en) | It is a kind of for testing the device of sebific duct compressive resistance | |
| CN216899507U (en) | Transformer integral sealing test device for corrugated pipe oil conservator | |
| CN112067204A (en) | Portable full-automatic gas tightness detector | |
| CN219587734U (en) | Intelligent integrated pressing tool | |
| CN216669176U (en) | Portable air tightness detector | |
| CN111256914A (en) | Engine oil duct water channel leakage test device and method | |
| CN110243444A (en) | Negative pressure source device, detecting gas meter air-channel system and calibration method | |
| CN216410562U (en) | Pipe fitting negative pressure check out test set | |
| CN204128738U (en) | The on-line testing device of gas meter, flow meter test pressure unit | |
| CN205808782U (en) | A kind of vacuum withdraw device of short neck nozzle | |
| CN216791284U (en) | Differential pressure gas flowmeter with automatic zero calibration function | |
| CN216483793U (en) | Pressure vessel based on-line measuring | |
| CN205535041U (en) | A standard gas irritates and fills device for SF6 is gaseous to be detected |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |