CN216846679U - Full narrow slit pressure measuring device for water conveying pipeline - Google Patents
Full narrow slit pressure measuring device for water conveying pipeline Download PDFInfo
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- CN216846679U CN216846679U CN202220131261.7U CN202220131261U CN216846679U CN 216846679 U CN216846679 U CN 216846679U CN 202220131261 U CN202220131261 U CN 202220131261U CN 216846679 U CN216846679 U CN 216846679U
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- measuring bottle
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- slit
- narrow slit
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 99
- 239000002984 plastic foam Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 238000009530 blood pressure measurement Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The utility model discloses a full narrow slit pressure measuring device of a water conveying pipeline, which comprises a pressure head measuring bottle, wherein the pressure head measuring bottle is a cavity body, the top of the pressure head measuring bottle is provided with an opening, and the bottom of the pressure head measuring bottle is provided with an overflowing hole; a narrow slit ruler is vertically arranged inside the pressure water head measuring bottle; the narrow slit ruler is of a hollow structure, scales are arranged on the wall of the narrow slit ruler, the narrow slit ruler is fixed with the pressure water head measuring bottle through an opening, the top end of the narrow slit ruler penetrates out of the top of the pressure water head measuring bottle, and the tail end of the narrow slit ruler is a certain distance away from the bottom of the pressure water head measuring bottle; floating blocks are arranged in the pressure water head measuring bottle and the narrow slit ruler. The method realizes the unified measurement of the head values of the open flow, the pressure flow and the negative pressure flow in the water pipeline system. The water head value is measured, so that the safe operation of the water pipeline system can be guaranteed, and the pressure water head value at any position in the water pipeline system can be accurately and effectively judged.
Description
Technical Field
The utility model belongs to the technical field of the pipeline pressure measurement, a full slot pressure measurement device of hydraulic pipeline is related to.
Background
Negative pressure is one of the important factors influencing the safety of a pipeline system, and aiming at the negative pressure phenomenon which is often generated by the pipeline system, a pitot tube is often adopted to measure the internal water pressure at present. For the pure open flow process, the water depth in the pipeline cross section is equal to the pressure head size at the current position, i.e. the pipeline water depth value in the open flow process can be expressed as the pressure head value at the current position. For the open-full flow alternative process, when the pressure head of the pipeline is greater than the height of the top of the pipeline, the water depth inside the cross section of the pressure measuring device cannot be accurately represented as the current pressure head value, a narrow slit can be formed in the cross section of the pressure measuring device, water flows into the narrow slit at the top end of the pressure measuring bottle under the action of pressure, and the water depth value inside the narrow slit is represented as the pressure head value at the current position.
The prior pitot tube device converts a flow velocity water head into a pressure water head so as to deal with the situation that the pressure water head is larger than the pipe diameter. When the water depth in the pipeline is smaller than the pipe top elevation, the water depth in the cross section of the pipeline can be used for representing the pressure water head value of the current position; when the flow state enters a pressure flow state, the water flow in the device is in a full pipe flow state, and the height of the pipe top and the depth of water in the pitot tube are the pressure water head value at the moment. However, for the negative pressure flow and the transient condition thereof which may occur in the pipeline system, the pressure head is lower than the high layer at the top of the pipe, and the full pipe flow state is different from the open flow state, the device can not measure the current pressure head value from the actual operation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a full slot pressure measurement device of conduit, the unable problem of acquireing pressure head through the inside depth of water that exists among the prior art has been solved.
The utility model adopts the technical proposal that the full narrow slit pressure measuring device of the water conveying pipeline comprises a pressure water head measuring bottle, wherein the pressure water head measuring bottle is a cavity body, the top of the pressure water head measuring bottle is provided with an opening, and the bottom of the pressure water head measuring bottle is provided with an overflowing hole; a narrow slit ruler is vertically arranged inside the pressure water head measuring bottle; the narrow slit ruler is of a hollow structure, scales are arranged on the wall of the narrow slit ruler, the narrow slit ruler is fixed with the pressure water head measuring bottle through an opening, the top end of the narrow slit ruler penetrates out of the top of the pressure water head measuring bottle, and the tail end of the narrow slit ruler is a certain distance away from the bottom of the pressure water head measuring bottle; floating blocks are arranged in the pressure water head measuring bottle and the narrow slit ruler.
The utility model discloses a characteristics still lie in:
the pressure water head measuring bottle is a sphere.
The narrow slit ruler is of a hollow cylindrical structure.
The pressure water head measuring bottle and the narrow slit ruler are internally fixed with strings which are connected with respective floating blocks.
The floating block is plastic foam.
The pressure water head measuring bottle and the narrow slit ruler are made of stainless steel materials.
The opening direction of the overflowing hole and the tail end of the narrow slit ruler are in the same horizontal position.
An annular flow passage is arranged in the overflowing hole, and two ends of the annular flow passage are connected with a sudden-expansion type overflowing funnel.
The annular overflow channel and the sudden-expansion-shaped overflow funnel are both horizontally arranged.
Two overflowing holes are formed and are respectively arranged on the corresponding force water head measuring bottles on the two sides of the narrow slit ruler.
The water pressure head measuring bottle is characterized by further comprising a base, fixing supports are installed at two ends of the base, and the water pressure head measuring bottle is fixed on the base through the fixing supports.
The utility model discloses a full slot pressure measurement device has realized the unified measurement to open flow, have pressure flow and negative pressure flowing water head value in the conduit system. The safe operation of the water pipe system can be guaranteed by measuring the water head value. The existing device can only measure the water head values of open flow and pressure flow, and the pipeline system is easily damaged by negative pressure due to misjudgment when the negative pressure is met. Therefore, through the utility model discloses a, can accurately judge the pressure flood peak value size of optional position in the conduit system effectively, provide effective technical guarantee for the safe and stable operation of system.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a front view structural diagram of the present invention;
fig. 3 is a schematic connection diagram of the annular flow passage and the sudden-expansion-shaped flow passage funnel of the present invention.
In the figure, 1, a base, 2, a fixed support, 3, a pressure water head measuring bottle, 4, a narrow slit ruler, 5, a string, 6, a floating block, 7, a fixed bolt, 8, an overflowing hole, 9, a sudden-expansion overflowing funnel and 10, an annular overflowing channel are arranged.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses a full narrow slit pressure measuring device of a water conveying pipeline, as shown in figures 1 and 2, comprises a base 1, wherein two ends of the base 1 are provided with fixing supports 2, the fixing supports 2 are used for fixing a pressure water head measuring bottle 3, and the pressure water head measuring bottle 3 is a sphere; a narrow slit ruler 4 is arranged inside the pressure head measuring bottle 3, the narrow slit ruler 4 is of a hollow cylindrical structure, and the bottom of the narrow slit ruler 4 is open and can be communicated with water flow in the pressure head measuring bottle 3 to be in the same pressure environment. The pressure water head measuring bottle 3 and the narrow slit ruler 4 are connected with the floating block 6 through the long string 5, the floating block 6 can float on the water surface, the fixed support 2 and the narrow slit ruler 4 are connected and fixed with the pressure water head measuring bottle 3 through the fixed bolt 7, and the bottom of the pressure water head measuring bottle 3 is provided with two overflowing holes 8. As shown in fig. 3, an annular overflow channel 10 is arranged in the overflow hole 8, and both ends of the annular overflow channel 10 are connected with a sudden-expansion overflow funnel 9, so that water can smoothly flow into or out of the pressure head measuring bottle 3.
The base 1 and the fixed support 2 are both made of stainless steel materials. The device is made of stainless steel materials, so that the stability of the device is ensured, and the service life of the device is prolonged.
The narrow slit ruler 4 is hollow and large enough to accommodate the lower floating block 6, and can float up and down smoothly without friction of wall surface on water surface.
In order to ensure the accuracy of the measurement result, the opening direction of the overflowing hole 8 and the tail end of the narrow slit ruler 4 are in the same horizontal position, so that the measured water head value is the pressure water head value in the pipeline. Meanwhile, the floating block 6 is made of plastic foam, so that the effect is more obvious.
The utility model discloses full slot pressure measurement device's principle does: the pressure head value and the overflowing flow state in the pipeline can be measured by recording the height values of the floating blocks 6 in the pressure head measuring bottle 3 and the narrow slit ruler 4; if the floating height of the floating block 6 in the pressure water head measuring bottle 3 does not reach the bottle top, the water flow in the bottle is in an open pipe flowing state, and the floating height of the floating block 6 is the size of the pressure water head; if the floating block 6 in the pressure water head measuring bottle 3 reaches the bottle top and the floating height of the floating block 6 in the narrow slit ruler 4 exceeds the bottle top, the flow state in the pipeline is in a pressure flow state, and the floating height of the floating block 6 in the narrow slit ruler 4 is the height of the pressure water head; if the floating block 6 in the pressure water head measuring bottle 3 reaches the bottle top and the floating height of the floating block 6 in the narrow slit ruler 4 does not exceed the bottle top, the pressure water head in the pipeline is in a negative pressure flow state, and the pressure water head in the pipeline is still the floating height of the floating block 6 in the narrow slit ruler 4.
The utility model discloses a when full slot pressure measuring device used, at first placed the position of placing the pipeline pressure head that awaits measuring to unable adjustment base 1 makes the bottom surface and the pipeline bottom surface of pressure head measuring flask 3 be in same horizontal position, treats that the interior rivers flow state of pipeline tends towards stability.
When the water flow in the device also tends to be stable, the floating heights of the floating blocks 6 in the pressure water head measuring bottle 3 and the narrow slit ruler 4 are observed, and the water heads of the pressure measuring pipes of the two floating blocks 6 are consistent in size due to the opening at the bottom of the narrow slit ruler 4. Therefore, if the heights of the floating blocks 6 in the pressure water head measuring bottle 3 and the narrow slit ruler 4 are consistent, the current flow state must be an open flow state, and the height from the floating block 6 to the bottle top is the magnitude of the pressure water head value; when the heights of the two floating blocks 6 are not consistent, the narrow slit ruler 4 is communicated with the outside atmosphere, the height of the floating block 6 inside the narrow slit ruler is the size of the pressure water head, if the height of the floating block 6 is higher than the height of the floating block 6 in the pressure water head measuring bottle 3, the flow state is a pressure flow state, otherwise, the flow state is an open flow state.
After the measurement is finished, the device is taken out, water in the pressure water head measuring bottle 3 is drained through the overflowing hole 8, and the device is placed in a dry place to be stored.
The device can realize the measurement of the pressure water head at any position in the water pipeline system, can solve the problem that the existing device can not measure the negative pressure, and provides technical support for the stable and safe operation of the channel.
Claims (10)
1. The full-narrow-slit pressure measuring device for the water conveying pipeline is characterized by comprising a pressure head measuring bottle (3), wherein the pressure head measuring bottle (3) is a cavity body, the top of the pressure head measuring bottle (3) is provided with an opening, and the bottom of the pressure head measuring bottle (3) is provided with an overflowing hole (8); a narrow slit ruler (4) is vertically arranged in the pressure water head measuring bottle (3); the narrow slit ruler (4) is of a hollow structure, scales are arranged on the wall of the narrow slit ruler (4), the narrow slit ruler (4) is fixed with the pressure water head measuring bottle (3) through an opening, the top end of the narrow slit ruler (4) penetrates out of the top of the pressure water head measuring bottle (3), and a certain distance is reserved between the tail end of the narrow slit ruler (4) and the bottom of the pressure water head measuring bottle (3); floating blocks (6) are arranged in the pressure water head measuring bottle (3) and the narrow slit ruler (4).
2. The water conveying pipeline full-narrow-slit pressure measuring device according to claim 1, wherein the pressure water head measuring bottle (3) is spherical.
3. The water conveying pipeline full-slit pressure measuring device according to claim 1, wherein the slit ruler (4) is of a hollow cylindrical structure.
4. The water conveying pipeline full-slit pressure measuring device according to claim 1, wherein strings (5) are fixed in the pressure water head measuring bottle (3) and the slit ruler (4), and the strings (5) are connected with respective floating blocks (6).
5. The water conveying pipeline full-narrow-slit pressure measuring device according to claim 1, wherein the floating block (6) is plastic foam.
6. The water conveying pipeline full-slit pressure measuring device according to claim 1, wherein the opening direction of the overflowing hole (8) and the tail end of the slit ruler (4) are in the same horizontal position.
7. The pressure measuring device according to claim 1, wherein an annular flow passage (10) is arranged in the overflowing hole (8), and two ends of the annular flow passage (10) are connected with a sudden-expansion-shaped overflowing funnel (9).
8. The water conveying pipeline full-narrow-slit pressure measuring device according to claim 7, wherein the annular overflow channel (10) and the sudden-expansion-shaped overflow funnel (9) are horizontally arranged.
9. The pressure measuring device for the full narrow gap of the water conveying pipeline according to claim 1, wherein two overflowing holes (8) are formed, and the overflowing holes (8) are respectively formed in the corresponding force water head measuring bottles (3) on two sides of the narrow gap ruler (4).
10. The water conveying pipeline full-narrow-slit pressure measuring device according to claim 1, further comprising a base (1), wherein fixing supports (2) are installed at two ends of the base (1), and the pressure water head measuring bottle (3) is fixed on the base (1) through the fixing supports (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220131261.7U CN216846679U (en) | 2022-01-18 | 2022-01-18 | Full narrow slit pressure measuring device for water conveying pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220131261.7U CN216846679U (en) | 2022-01-18 | 2022-01-18 | Full narrow slit pressure measuring device for water conveying pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216846679U true CN216846679U (en) | 2022-06-28 |
Family
ID=82084933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220131261.7U Expired - Fee Related CN216846679U (en) | 2022-01-18 | 2022-01-18 | Full narrow slit pressure measuring device for water conveying pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216846679U (en) |
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2022
- 2022-01-18 CN CN202220131261.7U patent/CN216846679U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220628 |