CN110553150A - pipeline pressure monitoring device and manufacturing method thereof - Google Patents
pipeline pressure monitoring device and manufacturing method thereof Download PDFInfo
- Publication number
- CN110553150A CN110553150A CN201910904569.3A CN201910904569A CN110553150A CN 110553150 A CN110553150 A CN 110553150A CN 201910904569 A CN201910904569 A CN 201910904569A CN 110553150 A CN110553150 A CN 110553150A
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- Prior art keywords
- pipeline
- connecting piece
- stopper
- measuring rod
- spring
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000009435 building construction Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to a pipeline pressure monitoring device and a manufacturing method thereof, wherein the monitoring device comprises a snap ring hooped on a pipeline, the snap ring is an open ring, and a first connecting piece and a second connecting piece are correspondingly and fixedly arranged at two ends of the snap ring positioned at the opening; and the measuring rod is connected to the first connecting piece through a spring, is positioned at the opening and is arranged along the direction tangent to the snap ring, the measuring rod is provided with threads, the second connecting piece of the snap ring is provided with a through hole for the measuring rod to pass through, and the measuring rod passes through the corresponding through hole and is screwed with a measuring rod nut. When not logical water in the pipeline, the measuring stick nut supports and leans on in the second connecting piece and makes the snap ring laminate in the pipeline, and the spring is in natural state simultaneously, and after the pipeline leads to water, the pipeline receives water pressure and expands along radial direction, and then drives the spring tensile, calculates through the tensile length of measurement spring and obtains pipeline pressure's numerical value.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a pipeline pressure monitoring device and a manufacturing method thereof.
Background
In the building construction process, especially for the pipeline used for long-distance slurry transportation, the pressure in the radial direction of the pipeline is often required to be measured, and how to measure the radial water pressure of the pipeline more accurately is a difficult point.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a pipeline pressure monitoring device and a manufacturing method thereof, which can solve the problem that the prior art is difficult to measure the radial water pressure of a pipeline.
the technical scheme for realizing the purpose is as follows:
The invention provides a pipeline pressure monitoring device, which comprises:
the clamping ring is hooped on the pipeline and is an open ring, and a first connecting piece and a second connecting piece are correspondingly and fixedly arranged at two ends of the clamping ring at the opening; and
the telescopic elastic assembly is used for connecting the first connecting piece and the second connecting piece, when water is not communicated in the pipeline, the first connecting piece and the second connecting piece are pulled and connected through the elastic assembly, so that the clamping ring is tightly hooped on the pipeline, after the pipeline is communicated with the water, the pipeline is expanded along the radial direction under the water pressure, the elastic assembly is driven to stretch, and the numerical value of the pipeline pressure is obtained through measuring the stretching length of the elastic assembly.
the invention has the advantages that the pipeline is hooped by the clamping ring and the elastic component, the elastic component is tied to connect two ends of the clamping ring when the pipeline is not filled with water, so that the clamping ring is tightly hooped on the pipeline, and then the pressure value of the pipeline is obtained by measuring the stretching length of the elastic component when the pipeline is filled with water.
The pipeline pressure monitoring device is further improved in that the elastic assembly comprises a spring and a measuring rod, one end of the spring is fixed at the end part of the measuring rod, the other end of the spring is fixed at the first connecting piece, the measuring rod is provided with threads, the second connecting piece of the clamping ring is provided with a through hole for the measuring rod to pass through, and the measuring rod passes through the corresponding through hole and is screwed with a measuring rod nut.
The pipeline pressure monitoring device is further improved in that the pipeline pressure monitoring device further comprises a guide rod fixedly arranged on the first connecting piece, the guide rod is positioned at the opening and arranged in parallel to the measuring rod, threads are formed on the guide rod, a connecting hole for the guide rod to penetrate through is formed in the second connecting piece of the clamping ring, and the guide rod penetrates through the corresponding connecting hole and is screwed with a guide rod nut.
The pipeline pressure monitoring device is further improved in that a graduated scale is fixedly arranged on the first connecting piece, a pointer is fixedly arranged on the second connecting piece corresponding to the graduated scale, and when the spring is in a natural state, the pointer points to zero scale of the graduated scale.
the pipeline pressure monitoring device is further improved in that the pipeline pressure monitoring device further comprises a first limiting stopper and a second limiting stopper which are arranged on the graduated scale corresponding to the pipeline pressure range, wherein the first limiting stopper and the second limiting stopper are electrically connected to a controller, and the controller is electrically connected to an alarm;
After the pipeline is filled with water, when the pointer is positioned at the first stopper, the first stopper sends a signal that the pressure is too low to the controller, and then the controller controls the alarm to give an alarm; when the pointer is located at the second limiting stopper, the second limiting stopper sends a signal that the pressure is too high to the controller, and then the controller controls the alarm to give an alarm.
The invention also provides a manufacturing method of the pipeline pressure monitoring device, which comprises the following steps:
Providing a snap ring which is an open ring, correspondingly and fixedly arranging a first connecting piece and a second connecting piece at two ends of the snap ring, which are positioned at the opening, and hooping the opening on the pipeline; and
And providing a telescopic elastic component, connecting the first connecting piece and the second connecting piece by using the elastic component in a pulling manner when water does not flow in the pipeline, so that the snap ring is tightly hooped on the pipeline, after the pipeline is filled with water, the pipeline is expanded along the radial direction under the water pressure, the elastic component is driven to stretch, and the stretched length of the elastic component is measured to calculate the numerical value of the pipeline pressure.
The manufacturing method of the pipeline pressure monitoring device is further improved in that the elastic component comprises a measuring rod and a spring, one end of the spring is fixed at the end part of the measuring rod, the other end of the spring is fixed at the first connecting piece, the measuring rod is provided with threads, a through hole for the measuring rod to pass through is formed in the second connecting piece of the clamping ring, and the measuring rod passes through the through hole and is screwed with a measuring rod nut.
The manufacturing method of the pipeline pressure monitoring device is further improved in that the method further comprises the following steps:
providing a guide rod, fixedly arranging the guide rod on the first connecting piece, arranging the guide rod at the opening and parallel to the measuring rod, arranging threads on the guide rod, arranging a connecting hole for the guide rod to pass through on the second connecting piece of the snap ring, and threading the guide rod through the corresponding connecting hole and screwing a guide rod nut.
The manufacturing method of the pipeline pressure monitoring device is further improved in that the method further comprises the following steps: and providing a graduated scale, fixedly arranging the graduated scale on the first connecting piece, and fixedly arranging a pointer on the second connecting piece corresponding to the graduated scale, so that the pointer points to the zero scale of the graduated scale when the spring is in a natural state.
The manufacturing method of the pipeline pressure monitoring device is further improved in that the method further comprises the following steps:
Providing a first stopper, a second stopper, a controller and an alarm, wherein the first stopper and the second stopper are arranged on the graduated scale corresponding to the pressure range of the pipeline, are electrically connected to the controller, and are electrically connected to the alarm;
when the pointer is positioned at the first stopper, the first stopper sends a signal that the pressure is too low to the controller, and then the controller controls the alarm to give an alarm; when the pointer is located at the second limiting stopper, the second limiting stopper sends a signal that the pressure is too high to the controller, and then the controller controls the alarm to give an alarm.
Drawings
Fig. 1 is a schematic view of the pipeline pressure monitoring device of the present invention in use.
Fig. 2 is a partially enlarged schematic view of an opening of a snap ring in the pipe pressure monitoring device according to the present invention.
fig. 3 is a schematic structural diagram of a first connecting member in the pipeline pressure monitoring device according to the present invention.
fig. 4 is a schematic structural diagram of a second connector in the pipeline pressure monitoring device according to the present invention.
fig. 5 is a schematic circuit diagram illustrating the connection of the first stopper, the second stopper, the alarm and the controller in the pipeline pressure monitoring device according to the present invention.
Description of reference numerals:
10-a snap ring; 100-a hoop space; 11-a first connection member; 12-a second connector; 21-a measuring rod; 210-a via; 211-a spring; 22-a guide bar; 220-connection hole; 23-a graduated scale; 231-a first stop; 232-a second stop; 24-a pointer; 25-a controller; 26-alarm.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1, the present invention provides a pipeline pressure monitoring device, which can measure the radial pressure of a pipeline and has the characteristics of simple structure and easy use. The pipeline pressure monitoring device of the invention is explained below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the pipe pressure monitoring apparatus of the present invention includes: a snap ring 10 in the shape of an open ring, and an elastic component, a guide rod 22, a graduated scale 23 and a pointer 24 which are arranged at the opening of the snap ring.
Wherein, form clamp space 100 in the snap ring 10, the pipeline card is in this clamp space 100 for the pipeline is located in the hoop to snap ring 10 hoop, and can make snap ring 10 hoop locate the pipeline of different pipe diameters through the open-ended size of adjustment snap ring 10. The two ends of the snap ring 10 at the opening are correspondingly and fixedly provided with a first connecting piece 11 and a second connecting piece 12. The elastic component is telescopic and connects the first connecting piece 11 and the second connecting piece 12. Preferably, the snap ring 10 is made of a material that is easily deformable and can be pulled straight for storage when not in use.
In one embodiment, the elastic assembly comprises a measuring rod 21 and a spring 211, wherein one end of the spring 211 is fixed to the end of the measuring rod 21, and the other end is fixed to the first connecting member 11. The measuring rod 21 is located at the opening of the clamping ring and arranged along the direction tangent to the clamping ring, threads are formed in the measuring rod 21, a through hole 210 for the measuring rod 21 to penetrate through is formed in the second connecting piece 12 of the clamping ring, and the measuring rod 21 penetrates through the corresponding through hole 210 and is screwed with a measuring rod nut so as to be connected with the second connecting piece and close the opening.
The end of the guide rod 22 is fixedly arranged on the first connecting piece 11, the guide rod 22 is also positioned at the opening and is arranged parallel to the measuring rod 21, the guide rod 22 is provided with threads, the second connecting piece 12 of the snap ring is provided with a connecting hole 220 for the guide rod 22 to pass through, and the guide rod 22 passes through the corresponding connecting hole 220 and is screwed with a guide rod nut, so that the guide rod 22 is connected with the second connecting piece and closes the opening. Preferably, the number of the guide rods 22 is two or more, and the guide rods 22 are distributed along the axial direction of the pipe, and the guide rods play a role of guiding, so that the clamping ring is prevented from twisting and shifting when the elastic component is stretched.
When water is not filled in the pipeline, the guide rod nut is firstly screwed to abut against the second connecting piece 12, the clamping ring 10 is ensured to be tightly adhered to the pipe wall of the pipeline, then the measuring rod nut is screwed to abut against the second connecting piece 12, and meanwhile, the spring 211 is ensured to be in a natural state. After the pipeline is filled with water, the pipeline is subjected to water pressure to generate a tendency of expanding along the radial direction, the measuring rod nut is kept still, the guide rod nut is loosened, and then the spring 211 is stretched under the action of the radial pressure of the pipeline. The guide rod nut is loosened to the state that the snap ring 10 is about to be separated from the pipe wall of the pipeline, the stretching length of the spring 211 can be measured at the moment, and the stretching length of the spring is multiplied by the spring coefficient of the spring to obtain the value of the radial pressure of the pipeline.
In another embodiment, the elastic member comprises a rubber band. When water is not communicated in the pipeline, the first connecting piece and the second connecting piece are pulled by the rubber band to enable the clamping ring to be tightly hooped on the pipeline, after the pipeline is communicated with the water, the pipeline is expanded along the radial direction under the action of the water pressure to drive the rubber band to stretch, and the numerical value of the pipeline pressure is obtained by measuring the stretching length of the rubber band.
In a preferred embodiment, referring to fig. 2 and 3, the graduated scale 23 is fixed on the first connecting member 11, and when the spring 211 is in a natural state, the end of the spring 211 is located at the zero graduation of the graduated scale 23. The provision of the scale 23 enables a user to intuitively read the length of the spring 211 that is stretched.
In another preferred embodiment, referring to fig. 2 to 4, a graduated scale 23 is fixed on the first connecting member 11, a pointer 24 is fixed on the second connecting member 12 corresponding to the graduated scale 23, and when the spring 211 is in a natural state, the pointer 24 points to the zero scale of the graduated scale 23. The arrangement of the scale 23 and the pointer 24 enables a user to obtain the stretched length of the spring 211 through reading intuitively, the reading can be performed more easily, the reading accuracy is improved, and errors caused by inaccurate reading are reduced.
in this embodiment, as shown in fig. 2 and 5, the monitoring device further includes a first stopper 231 and a second stopper 232 disposed on the scale 23, the first stopper 231 and the second stopper 232 are electrically connected to a controller 25, and the controller 25 is electrically connected to an alarm 26. Preferably, the controller 25 further comprises a wireless signal transceiver electrically connected to the first stopper 231, the second stopper 232 and the alarm 26, and a control device.
After the pipeline is filled with water, when the pointer 24 is located at the first stopper 231, the first stopper 231 sends a signal that the pressure is too low to the controller 25, and then the controller 25 controls the alarm 26 to give an alarm; when the pointer 24 is located at said second stop 232, the second stop 232 signals an overpressure to the controller 25, which in turn causes the controller 25 to control the alarm 26 to give an alarm. This embodiment can monitor pipeline pressure automatically, does not need artifical monitoring, has saved the manpower.
The invention also provides a manufacturing method of the pipeline pressure monitoring device, which comprises the following steps:
providing a snap ring 10, wherein the snap ring 10 is an open ring, a first connecting piece 11 and a second connecting piece 12 are correspondingly and fixedly arranged at two ends of the snap ring 10 at the opening, and the open ring is hooped on the pipeline; and
providing a telescopic elastic component, when water is not filled in the pipeline, pulling the first connecting piece and the second connecting piece by using the elastic component to enable the snap ring 10 to be tightly hooped on the pipeline, after the pipeline is filled with water, the pipeline is expanded along the radial direction under the water pressure, then driving the elastic component to stretch, and measuring the stretching length of the elastic component to calculate the numerical value of the pipeline pressure.
In one embodiment, the elastic component includes a measuring rod 21 and a spring 211, one end of the spring 211 is fixed to the end of the measuring rod 21, the other end of the spring 211 is fixed to the first connecting piece 11, the measuring rod 21 is disposed at the opening and arranged along the direction tangential to the snap ring 10, a thread is formed on the measuring rod 21, a through hole 210 for the measuring rod 21 to pass through is formed on the second connecting piece 12 of the snap ring, and the measuring rod 21 passes through the through hole 210 and is screwed with a measuring rod nut;
Providing a guide rod 22, fixedly arranging the guide rod 22 on the first connecting piece 11, arranging the guide rod 22 at the opening and parallel to the measuring rod 21, forming threads on the guide rod 22, forming a connecting hole 220 for the guide rod 22 to pass through on the second connecting piece 12 of the snap ring, and passing the guide rod 22 through the corresponding connecting hole 220 and screwing a guide rod nut. Preferably, the number of the guide rods 22 is two or more, and when the guide rods 22 are fixedly arranged on the first connecting member 11, the guide rods 22 are distributed along the axial direction of the pipeline.
When water is not filled in the pipeline, the guide rod nut is firstly screwed to abut against the second connecting piece 12, the clamping ring 10 is ensured to be tightly adhered to the pipe wall of the pipeline, then the measuring rod nut is screwed to abut against the second connecting piece 12, and meanwhile, the spring 211 is ensured to be in a natural state. After the pipeline is filled with water, the pipeline is subjected to water pressure to generate a tendency of expanding along the radial direction, the measuring rod nut is kept still, the guide rod nut is loosened, and then the spring 211 is stretched under the action of the radial pressure of the pipeline. The guide rod nut is loosened to the state that the snap ring 10 is about to be separated from the pipe wall of the pipeline, the stretching length of the spring 211 can be measured at the moment, and the stretching length of the spring is multiplied by the spring coefficient of the spring to obtain the value of the radial pressure of the pipeline.
In another embodiment, the elastic member comprises a rubber band. When water is not communicated in the pipeline, the rubber band is in a state of pulling the first connecting piece and the second connecting piece, so that the clamping ring is tightly hooped on the pipeline, after the pipeline is communicated with the water, the pipeline is expanded along the radial direction under the action of the water pressure, the rubber band is driven to stretch, and the numerical value of the pipeline pressure is obtained by measuring the stretching length of the rubber band.
In a preferred embodiment, the method further comprises the following steps: providing a graduated scale 23, fixedly arranging the graduated scale 23 on the first connecting member 11, and enabling the end of the spring to be located at the zero graduation of the graduated scale 23 when the spring is in a natural state.
In another preferred embodiment, the method further comprises the following steps: providing a graduated scale 23, fixedly arranging the graduated scale 23 on the first connecting member 11, and fixedly arranging a pointer 24 on the second connecting member 12 corresponding to the graduated scale 23, so that the pointer 24 points to the zero scale of the graduated scale 23 when the spring is in a natural state.
Providing a first stopper, a second stopper, a controller and an alarm, wherein the first stopper and the second stopper are arranged on the graduated scale and are electrically connected to the controller, and the controller is electrically connected to the alarm;
When the pointer is positioned at the first stopper, the first stopper sends a signal that the pressure is too low to the controller, and then the controller controls the alarm to give an alarm; when the pointer is located at the second limiting stopper, the second limiting stopper sends a signal that the pressure is too high to the controller, and then the controller controls the alarm to give an alarm.
The pipeline pressure monitoring device and the manufacturing method thereof have the beneficial effects that:
The invention adopts the snap ring and the measuring rod to hoop the pipeline, the spring is in a natural state when the pipeline is not filled with water, the measuring rod is fixed with the second connecting piece of the snap ring, and then the pressure value of the pipeline is obtained by measuring the stretching length of the spring when the pipeline is filled with water.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (10)
1. A pipeline pressure monitoring device, comprising:
The clamping ring is hooped on the pipeline and is an open ring, and a first connecting piece and a second connecting piece are correspondingly and fixedly arranged at two ends of the clamping ring at the opening; and
The telescopic elastic assembly is used for connecting the first connecting piece and the second connecting piece, when water is not communicated in the pipeline, the first connecting piece and the second connecting piece are pulled and connected through the elastic assembly, so that the clamping ring is tightly hooped on the pipeline, after the pipeline is communicated with the water, the pipeline is expanded along the radial direction under the water pressure, the elastic assembly is driven to stretch, and the numerical value of the pipeline pressure is obtained through measuring the stretching length of the elastic assembly.
2. The pipeline pressure monitoring device of claim 1, wherein the elastic assembly comprises a spring and a measuring rod, one end of the spring is fixed to the end of the measuring rod, the other end of the spring is fixed to the first connecting piece, the measuring rod is provided with a thread, the second connecting piece of the snap ring is provided with a through hole for the measuring rod to pass through, and the measuring rod passes through the corresponding through hole and is screwed with a measuring rod nut.
3. The pipeline pressure monitoring device according to claim 1 or 2, further comprising a guide rod fixedly disposed on the first connecting member, wherein the guide rod is disposed at the opening and parallel to the measuring rod, the guide rod is threaded, a connecting hole for the guide rod to pass through is formed on the second connecting member of the snap ring, and the guide rod passes through the corresponding connecting hole and is screwed with a guide rod nut.
4. The pipeline pressure monitoring device according to claim 1 or 2, wherein a graduated scale is fixedly arranged on the first connecting piece, a pointer is fixedly arranged on the second connecting piece corresponding to the graduated scale, and the pointer points to the zero scale of the graduated scale when the spring is in a natural state.
5. The line pressure monitoring device according to claim 4, further comprising a first stopper and a second stopper provided on the scale corresponding to a range of line pressure, the first stopper and the second stopper being electrically connected to a controller, the controller being electrically connected to an alarm;
After the pipeline is filled with water, when the pointer is positioned at the first stopper, the first stopper sends a signal that the pressure is too low to the controller, and then the controller controls the alarm to give an alarm; when the pointer is located at the second limiting stopper, the second limiting stopper sends a signal that the pressure is too high to the controller, and then the controller controls the alarm to give an alarm.
6. A method of manufacturing a pipeline pressure monitoring device, comprising the steps of:
Providing a snap ring which is an open ring, correspondingly and fixedly arranging a first connecting piece and a second connecting piece at two ends of the snap ring, which are positioned at the opening, and hooping the opening on the pipeline; and
And providing a telescopic elastic component, connecting the first connecting piece and the second connecting piece by using the elastic component in a pulling manner when water does not flow in the pipeline, so that the snap ring is tightly hooped on the pipeline, after the pipeline is filled with water, the pipeline is expanded along the radial direction under the water pressure, the elastic component is driven to stretch, and the stretched length of the elastic component is measured to calculate the numerical value of the pipeline pressure.
7. The method of claim 6, wherein the elastic member includes a measuring rod and a spring, one end of the spring is fixed to an end of the measuring rod, the other end of the spring is fixed to the first connecting member, the measuring rod is threaded, a through hole for the measuring rod to pass through is formed in the second connecting member of the snap ring, and the measuring rod is passed through the through hole and screwed to a measuring rod nut.
8. The method for manufacturing a line pressure monitoring device according to claim 6 or 7, further comprising the steps of:
Providing a guide rod, fixedly arranging the guide rod on the first connecting piece, arranging the guide rod at the opening and parallel to the measuring rod, arranging threads on the guide rod, arranging a connecting hole for the guide rod to pass through on the second connecting piece of the snap ring, and threading the guide rod through the corresponding connecting hole and screwing a guide rod nut.
9. The method for manufacturing a line pressure monitoring device according to claim 6 or 7, further comprising the steps of: and providing a graduated scale, fixedly arranging the graduated scale on the first connecting piece, and fixedly arranging a pointer on the second connecting piece corresponding to the graduated scale, so that the pointer points to the zero scale of the graduated scale when the spring is in a natural state.
10. the method of manufacturing a line pressure monitoring device according to claim 9, further comprising the steps of:
providing a first stopper, a second stopper, a controller and an alarm, wherein the first stopper and the second stopper are arranged on the graduated scale corresponding to the pressure range of the pipeline, are electrically connected to the controller, and are electrically connected to the alarm;
When the pointer is positioned at the first stopper, the first stopper sends a signal that the pressure is too low to the controller, and then the controller controls the alarm to give an alarm; when the pointer is located at the second limiting stopper, the second limiting stopper sends a signal that the pressure is too high to the controller, and then the controller controls the alarm to give an alarm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910904569.3A CN110553150A (en) | 2019-09-24 | 2019-09-24 | pipeline pressure monitoring device and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910904569.3A CN110553150A (en) | 2019-09-24 | 2019-09-24 | pipeline pressure monitoring device and manufacturing method thereof |
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| CN110553150A true CN110553150A (en) | 2019-12-10 |
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| CN201910904569.3A Pending CN110553150A (en) | 2019-09-24 | 2019-09-24 | pipeline pressure monitoring device and manufacturing method thereof |
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