CN208953030U - A kind of shaftless gas turbine meter - Google Patents
A kind of shaftless gas turbine meter Download PDFInfo
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- CN208953030U CN208953030U CN201821602479.6U CN201821602479U CN208953030U CN 208953030 U CN208953030 U CN 208953030U CN 201821602479 U CN201821602479 U CN 201821602479U CN 208953030 U CN208953030 U CN 208953030U
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- ontology
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- gas turbine
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Abstract
The utility model discloses a kind of shaftless gas turbine meters, including ontology, it is characterized in that: being equipped with one group of evenly arranged circular hole without shaft turbine outer wall, the magnet is respectively fixed in each circular hole, the no shaft turbine cooperation is in the inner ring of needle bearing, the needle bearing is arranged in the cavity of the ontology, surface sets threaded fastener threads and is connected in ontology, the fastener withstands the outer gear ring of the needle bearing, in the Hall sensor fixed placement circular hole two that side is equipped on the body.The utility model has the characteristics that structure is simple, practical, at low cost, can be widely used for the detection of various gases in instrument industry.
Description
Technical field
The utility model relates to instrumentation fields, in particular, being related to a kind of shaftless gas turbine meter.
Background technique
Water conservancy diversion before present gas turbine meter all uses the organization plan of axis rotation turbine, the front of turbine to install
Body, second level rectifier, baffle after the rear installation of turbine, the both ends of turbine wheel shaft are equipped with bearing, from the ontology of turbine flowmeter
In have mounting bracket, the protection cavity of the bearing at fixed turbine axis both ends, magnetic sensing element is deep into turbine flowmeter ontology
Portion.Using the gas turbine meter of this structure, mechanical part is more, and material cost is high, and difficulty of processing is big, and installation difficulty is high,
Production cycle is long, and maintenance work amount is big, and in use, when being measured the pressure jump of gas, is easy to make whirlpool
Wheel shaft deforms, and scraps so as to cause turbine flowmeter.Baffle, second level rectifier before being installed due to the front of turbine, are made
Gas turbine meter resistance is big, and when measuring high-speed gas, the pressure loss is larger, is unfavorable for energy conservation, is deep into turbine flowmeter
Ontology in mounting bracket and magnetic sensing element protection cavity, the gas of high flow rate forms vortex street at work, and vortex street draws
The vibration of gas-turbine sensing is played, flow velocity is higher, and the frequency of vortex street is higher, and the vibration frequency of gas-turbine sensing is higher, when long
Between vibration be easy to cause turbine rotation axis fatigue deformation.Preceding baffle, second level rectifier, the rear water conservancy diversion of turbine flowmeter are installed
The protection cavity of body, the mounting bracket being deep into the ontology of turbine flowmeter and magnetic sensing element, changes air-flow at work
Stability, increase the Reynolds number of gas, the linearity of turbine flowmeter caused to change greatly.
Shaftless gas turbine meter use will be put into a needle bearing without shaft turbine without shaft turbine, and work as gas
When flowing through turbine, the kinetic energy of gas pushes turbine rotation, using this structure can save preceding baffle, second level rectifier, after lead
Fluid, a bearing, the bearing mounting bracket being deep into the middle part of turbine flowmeter ontology, magnetic sensing element protection cavity.This
Utility model structure is simple, and mechanical part is few, and the cost of material is low, and easy to process, assembly, production cost is low, is easy to dimension in the future
Shield operation.It is therefore necessary to design a kind of shaftless gas turbine meter.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of shaftless gas turbine meters, for measuring gas stream
Amount.
The utility model adopts the following technical solution realizes purpose of utility model:
A kind of shaftless gas turbine meter, including ontology are uniformly arranged it is characterized in that: being equipped with one group without shaft turbine outer wall
The circular hole one of cloth is respectively fixed with magnet in each circular hole one, and the no shaft turbine is interference fitted in needle bearing
In circle, the needle bearing is arranged in the cavity of the ontology, and surface sets threaded fastener threads and is connected to described
In vivo, the fastener withstands outer gear ring one end of the needle bearing, and the other end of the outer gear ring of the needle bearing is withstood
The side of the intrinsic ring ladder protrusion, the Hall sensor fixed placement circular hole two that side is equipped on the body
Interior, the Hall sensor is corresponding with the magnet, the through-hole one and through-hole two being equipped on the upside of the ontology, the through-hole one
Internal screw thread connects pressure sensor, and two internal screw thread of through-hole connects PT100 thermal resistance, and the probe of the PT100 thermal resistance is worn
It crosses the through-hole two to enter in the ontology, is fixedly connected with support protective shell on the upside of the ontology, it is the Hall sensor, described
PT thermal resistance and the pressure sensor are arranged in the support protective shell, are fixedly connected with table on the upside of the support protective shell
Shell is fixedly connected with wiring board in the watchcase, is fixedly connected with liquid crystal display on front side of the wiring board, solid on rear side of the wiring board
Surely single-chip microcontroller is connected, lithium metal battery is installed in the watchcase.
As further limiting for the technical program, no shaft turbine is equipped with a circular hole one.
As further limiting for the technical program, the model MSP430F4152 of the single-chip microcontroller.
As further limiting for the technical program, the Hall sensor model HG106A.
As further limiting for the technical program, the pressure sensor model is HK3023.
Compared with prior art, the advantages and positive effects of the utility model are as follows: being flowed into when actual measurement gas is from ontology entrance
When to shaftless gas turbine meter, the kinetic energy of gas is pushed to be rotated without shaft turbine, and no shaft turbine drives the inner ring of needle bearing
It rotates, five blocks of magnet is embedded on no shaft turbine, for each revolution, Hall sensor detects five pulses letters to no shaft turbine
Number, and five pulse signals are sent to single-chip microcontroller, single-chip microcontroller five pulse signals of every reading are assert without one circle of shaft turbine rotation,
Since the volume that gas flows through is directly proportional to the revolving speed of no shaft turbine, reads Hall sensor and issue pulse signal, can calculate
The rotating cycle of no shaft turbine rotation.The volume of gas is larger by pressure and temperature effect, and pressure is housed on the shell of ontology
Sensor and PT100 thermal resistance, the pressure signal and temperature signal that will test are sent to single-chip microcontroller operation, to the volume of gas
Pressure, temperature-compensating are carried out, single-chip microcontroller calculates the gas volume under standard condition.The utility model has structure simple, real
The features such as strong, at low cost with property, it can be widely used for the detection of various gases in instrument industry.
Detailed description of the invention
Fig. 1 is the schematic perspective view one of the utility model.
Fig. 2 is the schematic perspective view two of the utility model.
Fig. 3 is the part attachment structure schematic diagram one of the utility model.
Fig. 4 is the part attachment structure schematic diagram two of the utility model.
Fig. 5 is the part attachment structure schematic diagram three of the utility model.
Fig. 6 is the schematic perspective view of the needle bearing of the utility model.
Fig. 7 is the monolithic mainboard CPU module schematic diagram of the utility model.
Fig. 8 is the pressure sensor module schematic diagram of the utility model.
Fig. 9 is the Hall sensor module schematic diagram of the utility model.
Figure 10 is the key circuit module principle figure of the utility model.
Figure 11 is the cross-sectional view of the parts such as the ontology and ring ladder protrusion of the utility model.
In figure: 1, ontology, 2, without shaft turbine, 3, needle bearing, 4, fastener, 5, Hall sensor, 6, magnet, 7, this
Body entrance, 8, pressure sensor, 9, PT100 thermal resistance, 10, lithium metal battery, 11, single-chip microcontroller, 12, liquid crystal display, 13,
Support protective shell, 14, watchcase, 15, circular hole one, 16, wiring board, 17, through-hole one, 18, through-hole two, 19, circular hole two, 20, annular
Ladder protrusion.
Specific embodiment
With reference to the accompanying drawing, a specific embodiment of the utility model is described in detail, it is to be understood that this
The protection scope of utility model is not limited by the specific implementation.
As shown in Figure 1-Figure 11, the utility model includes ontology 1, and no 2 outer wall of shaft turbine is evenly arranged equipped with one group
Circular hole 1 is respectively fixed with magnet 6 in each circular hole 1, and the no shaft turbine 2 is interference fitted in needle bearing 3
Inner ring in, the needle bearing 3 is arranged in the cavity of the ontology 1, and surface sets threaded fastener 4 and is threadedly coupled to
In the ontology 1, the fastener 4 withstands outer gear ring one end of the needle bearing 3, the outer gear ring of the needle bearing 3
The other end withstands the side of the ring ladder protrusion 20 in the ontology 1, and 5 fixed placement of Hall sensor is on the ontology 1
In the circular hole 2 19 that side is equipped with, the Hall sensor 5 is corresponding with the magnet 6, the through-hole one being equipped on the upside of the ontology 1
17 and through-hole 2 18, one 17 internal screw thread of through-hole connects pressure sensor 8,2 18 internal screw thread of the through-hole connection PT100 heat
The probe of resistance 9, the PT100 thermal resistance 9 enters in the ontology 1 across the through-hole 2 18, fixed on the upside of the ontology 1
Connection support protective shell 13, the Hall sensor 5, the PT100 thermal resistance 9 and the pressure sensor 8 are arranged at institute
It states in support protective shell 13, watchcase 14 is fixedly connected on the upside of the support protective shell 13, is fixedly connected with route in the watchcase 14
Plate 16 is fixedly connected with liquid crystal display 12 on front side of the wiring board 16, single-chip microcontroller 11, institute is fixedly connected on rear side of the wiring board 16
It states and lithium metal battery 10 is installed in watchcase 14.
The no shaft turbine 2 is equipped with 5 circular holes 1.
The model MSP430F4152 of the single-chip microcontroller 11.
The 5 model HG106A of Hall sensor.
The 8 model HK3023 of pressure sensor.
The ring ladder protrusion 20 includes ramp projections and planar projections, close to the side inclined-plane of ontology outlet 7
Protrusion plays the role of focused airflow, and the other side planar projections of ring ladder protrusion 20 play the fixed needle bearing 3
The annular ridge of the effect of outer gear ring, described no 2 one end of shaft turbine is located exactly at the planar projections of the ring ladder protrusion 20
Inside.Fastener 4 and ring ladder protrusion 20 needle bearing 3 that is clamped can back out fastener 4 when not in use, will roll
Needle bearing 3 is disassembled out of ontology 1.
Power supply connects single-chip microcontroller 11, and the single-chip microcontroller 11 is separately connected pressure sensing 8, PT100 thermal resistance 9, hall sensing
Device 5, liquid crystal display 12 and key circuit.
Pin 1, pin 2, pin 60 and the pin 11 of the single-chip microcontroller 11 connect key circuit, and the single-chip microcontroller 11 draws
Foot 3 and pin 4 connect the PT100 thermal resistance 9, and the pin Pin 3 and pin 5 of the single-chip microcontroller 11 connect the pressure sensing
Device 8, the pin 3 and pin 6 of the single-chip microcontroller 11 connect the Hall sensor 5, the pin 12-39 of the single-chip microcontroller 11, draw
Foot 44, pin 45 and the pin 48-55 connection liquid crystal display 12, the pin 64 of the single-chip microcontroller 11 connect the power supply.
The workflow of the utility model are as follows: when surveying gas from ontology entrance 7, be flowed into shaftless gas turbine meter
When, the kinetic energy of gas is pushed to be rotated without shaft turbine 2, and no shaft turbine 2 drives the inner ring of needle bearing 3 to rotate, embedding on no shaft turbine 2
Enter to have five blocks of magnet 6, for each revolution, Hall sensor 5 detects five pulse signals to no shaft turbine 2, and by five pulses
Signal is sent to single-chip microcontroller 11, and five pulse signals of every reading of single-chip microcontroller 11 are assert and turn around without the rotation of shaft turbine 2, due to gas stream
The volume crossed is directly proportional to the revolving speed of no shaft turbine 2, reads Hall sensor 5 and issues pulse signal, can calculate no shaft turbine 2
Rotating cycle.The volume of gas is larger by pressure and temperature effect, and 8 He of pressure sensor is housed on the shell of ontology 1
PT100 thermal resistance 9, the pressure signal and temperature signal that will test are sent to single-chip microcontroller operation, to the volume of gas carry out pressure,
Temperature-compensating, single-chip microcontroller 11 calculate the gas volume under standard condition.The positive supply of pressure sensor 8 terminates at single-chip microcontroller
11 VREF mouth, negative supply ground connection, delivery outlet meet the A5 mouth in single-chip microcontroller 11, one end of PT100 thermal resistance 9 and resistance R1, R2
Connection, the other end and ground connection, another VREF mouth for terminating at single-chip microcontroller 11 of resistance R1, the another of resistance R2 terminate at single-chip microcontroller
11 A4 mouth, the positive supply of Hall sensor 5 terminate at VREF mouthfuls of single-chip microcontroller, and negative supply ground connection, delivery outlet connects in single-chip microcontroller 11
A6 mouth, lithium metal battery 10 is that single-chip microcontroller 11 provides power supply, be grounded after one end of 4 in key circuit key is in parallel,
Its 4 port is connect with the port KEY1, KEY2KEY3 and KEY4 of single-chip microcontroller 11 respectively, is used as function key.Single-chip microcontroller 11,
Resistance R1R2, liquid crystal display 12, key circuit 13 are welded on wiring board 16, and wiring board 16 and lithium metal battery 10 are installed
In the cavity of watchcase 14, watchcase 14 is mounted on support protective shell 13, and support protective shell 13 is installed on ontology 1.
The rotating cycle X without shaft turbine 2 measured by Hall sensor 5 is counted according to the rotating cycle X of no shaft turbine 2
Calculate the flow velocity V of gas:
V=KX (1)
K-is in normal conditions by the calculated constant of experimental data；
Thus gas flow q under standard state is calculated:
Empirical equation is compensated according to gas flow:
q1- gas actual flow
Gas flow under q-standard state
p1- gas actual pressure, kpa, the measurement of pressure sensor 8 obtain；
P-gas standard pressure, kpa, pressure value of the gas temperature at 20 DEG C；
T1- gas actual temperature, DEG C, the measurement of PT100 thermal resistance 9 obtains；
T-gas standard temperature, 20 DEG C
Obtain ontology pipeline actual flow q1:
The rotating cycle X without shaft turbine 2 measured is sent to single-chip microcontroller 11,8 He of pressure sensor by Hall sensor 5
PT100 thermal resistance 9, the pressure signal and temperature signal that will test are sent to single-chip microcontroller 11, and single-chip microcontroller 11 is calculated according to formula (5)
Gas fluid flow out.
Disclosed above is only a specific embodiment of the utility model, and still, the utility model is not limited to this,
The changes that any person skilled in the art can think of should all fall into the protection scope of the utility model.
Claims (5)
1. a kind of shaftless gas turbine meter, including ontology (1), it is characterized in that: equal equipped with one group without shaft turbine (2) outer wall
The circular hole one (15) of even arrangement, each circular hole one (15) is interior to be respectively fixed with magnet (6), no shaft turbine (2) interference
In the inner ring of needle bearing (3), the needle bearing (3) is arranged in the cavity of the ontology (1) for cooperation, and surface is equipped with spiral shell
The fastener (4) of line is threadedly coupled in the ontology (1), and the fastener (4) withstands the outer gear ring of the needle bearing (3)
One end, the other end of the outer gear ring of the needle bearing (3) withstand the one of the ring ladder in the ontology (1) raised (20)
Side, the circular hole two (19) that Hall sensor (5) fixed placement is equipped on the upside of the ontology (1) is interior, the Hall sensor (5)
Through-hole one (17) and through-hole two (18) corresponding with the magnet (6), being equipped on the upside of the ontology (1), the through-hole one
(17) internal screw thread connection pressure sensor (8), through-hole two (18) internal screw thread connect PT100 thermal resistance (9), the PT100
The probe of thermal resistance (9) enters in the ontology (1) across the through-hole two (18), is fixedly connected with branch on the upside of the ontology (1)
It supports protective shell (13), the Hall sensor (5), the PT100 thermal resistance (9) and the pressure sensor (8) are arranged at
In the support protective shell (13), it is fixedly connected watchcase (14) on the upside of the support protective shell (13), it is solid in the watchcase (14)
Determine connection line plate (16), be fixedly connected liquid crystal display (12) on front side of the wiring board (16), on rear side of the wiring board (16)
It is fixedly connected single-chip microcontroller (11), lithium metal battery (10) is installed in the watchcase (14).
2. shaftless gas turbine meter according to claim 1, it is characterised in that: no shaft turbine (2) is equipped with 5 institutes
State circular hole one (15).
3. shaftless gas turbine meter according to claim 1, it is characterised in that: the model of the single-chip microcontroller (11)
MSP430F4152。
4. shaftless gas turbine meter according to claim 1, it is characterised in that: Hall sensor (5) model
For HG106A.
5. shaftless gas turbine meter according to claim 1, it is characterised in that: pressure sensor (8) model
For HK3023.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821602479.6U CN208953030U (en) | 2018-09-29 | 2018-09-29 | A kind of shaftless gas turbine meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821602479.6U CN208953030U (en) | 2018-09-29 | 2018-09-29 | A kind of shaftless gas turbine meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208953030U true CN208953030U (en) | 2019-06-07 |
Family
ID=66740216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821602479.6U Active CN208953030U (en) | 2018-09-29 | 2018-09-29 | A kind of shaftless gas turbine meter |
Country Status (1)
| Country | Link |
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| CN (1) | CN208953030U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282861A (en) * | 2018-09-29 | 2019-01-29 | 山东科尔自动化仪表股份有限公司 | A kind of shaftless gas turbine meter and measurement method |
-
2018
- 2018-09-29 CN CN201821602479.6U patent/CN208953030U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282861A (en) * | 2018-09-29 | 2019-01-29 | 山东科尔自动化仪表股份有限公司 | A kind of shaftless gas turbine meter and measurement method |
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