CN207351630U - A kind of air-tightness detection device - Google Patents
A kind of air-tightness detection device Download PDFInfo
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- CN207351630U CN207351630U CN201721219386.0U CN201721219386U CN207351630U CN 207351630 U CN207351630 U CN 207351630U CN 201721219386 U CN201721219386 U CN 201721219386U CN 207351630 U CN207351630 U CN 207351630U
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Abstract
The utility model discloses a kind of air-tightness detection device, is related to air-leakage test technical field.It includes differential pressure type air-tightness leak detector, differential pressure type air-tightness leak detector includes gas source pipe, gas tube, benchmark property management, tested property management, benchmark property management and tested property management are connected with the output port of gas tube, gas tube is equipped with charge valve, balanced valve is equipped with benchmark property management and tested property management, the output port of gas tube is connected with exhaust pipe and air bleeding valve, and the output port of gas tube is also associated with monitoring pipe, the output port of monitoring pipe is equipped with pressure gauge, and monitoring pipe is equipped with monitoring valve；Differential pressure pick-up is equipped between benchmark property management and tested property management.The pressure of the primary standard substance shown on pressure gauge and differential pressure type air-tightness leak detector is read at the same time by monitoring pipe and pressure gauge, so as to note abnormalities in time, improves accuracy of detection；Support chip avoids the outer wall of monitoring pipe from being close to the inner wall of tested property management, while increases the heat exchange area of gas, improves accuracy of detection.
Description
Technical field
Air-leakage test technical field is the utility model is related to, more specifically, it relates to a kind of air-tightness detection device.
Background technology
With the increasingly raising of people's living standard, the requirement to domestic heating and domestic hot-water's comfort is also increasingly
It is high.At present, as domestic heating and the heating/hot water supply burnt gas wall hanging furnace of domestic hot-water supply, burnt gas wall hanging furnace combustion chamber
The heat utilization rate that air-tightness is directly related to the burning of wall-hung boiler combustion gas and is produced with fuel gas buring, in some cases can shadow
Ring to normal fully burning, reduce burning quality, influence heat input.Therefore, it is airtight to the combustion chamber of the wall-hung boiler before dispatching from the factory
Property is detected extremely important.
A kind of difference that solenoid valve is controlled with PWM is disclosed in the Chinese utility model patent that notification number is CN205280304U
The airtight leak detector of pressure type, it includes control unit, gas source interface, charge valve, balanced valve, primary standard substance interface and measured object interface；
The gas source interface connects with charge valve and is connected to first pressure sensor between the two；The output port punishment of the charge valve
Not with primary standard substance interface, measured object interface, air bleeding valve and second pressure sensor and connecing, and primary standard substance interface and measured object connect
Mouth is connected by the air flue equipped with balanced valve with charge valve；The input terminal of the air bleeding valve is connected with charge valve, its output terminal
Equipped with exhaust outlet；Differential pressure pick-up is equipped between the primary standard substance interface and measured object interface；Described control unit includes PWM
Controller, the PWM controller are electrically connected with charge valve, balanced valve and air bleeding valve respectively.
By being inflated to wall-hung boiler and primary standard substance, the signal for reading differential pressure pick-up becomes above-mentioned air-tightness leak detector
Change, judge the differential pressure measuring leakage rate of measured object.Since air-tightness leak detector is in itself there are error, in use, itself
Pipeline can occur aging rupture and reveal, cause error increasing, when work is difficult to the error of discovery air-tightness leak detector
Whether increase, and then cause accuracy of detection low.
Utility model content
For existing technical problem, the utility model provides a kind of air-tightness detection device, by set monitoring pipe and
Pressure gauge, to solve the above problems, it has the advantages that accuracy of detection is high.
To achieve the above object, the utility model provides following technical solution：
A kind of air-tightness detection device, including differential pressure type air-tightness leak detector, the differential pressure type air-tightness leak detector include
Gas source pipe, gas tube, benchmark property management, tested property management, the output terminal of the benchmark property management and tested property management with the gas tube
Mouth connects, and is provided with charge valve on the gas tube, balanced valve is both provided with the benchmark property management and tested property management, described to fill
The output port of tracheae is connected with exhaust pipe and air bleeding valve, and the output port of the gas tube is also associated with monitoring pipe, described
The output port of monitoring pipe is provided with pressure gauge, and monitoring valve is provided with the monitoring pipe；
Differential pressure pick-up is equipped between the benchmark property management and tested property management.
Through the above technical solutions, during work, charge valve, balanced valve and monitoring valve are opened, closes air bleeding valve, gas tube leads to
Tested property management and benchmark property management is crossed respectively to be inflated wall-hung boiler and primary standard substance inner cavity；, will after default inflationtime
Charge valve is closed, and then stops inflation, closes balanced valve and monitoring valve so that logical between pressure gauge, primary standard substance and wall-hung boiler
Road is cut off；Differential pressure type air-tightness leak detector shows the differential pressure measuring of wall-hung boiler by monitoring the signal intensity of differential pressure pick-up
Leakage rate；Since the aeration quantity in the pressure and primary standard substance in pressure gauge is consistent, while read pressure gauge and differential pressure type gas
The pressure of the primary standard substance shown on close property leak detector, if pressure is equal, illustrates that differential pressure type air-tightness leak detector is not revealed；
If the pressure of primary standard substance is less than the pressure of pressure gauge, illustrate that leakage occurs for differential pressure type air-tightness leak detector, it is necessary to calibrate, so that
The exception of differential pressure type air-tightness leak detector is found in time, improves accuracy of detection.
Further, the pressure is calculated as U-tube pressure gauge, the output port of the monitoring pipe and the U-tube pressure
The mouth of pipe connection of meter.
Through the above technical solutions, if U-tube pressure gauge configuration is simple, sturdy and durable, cheap, the long nothing of service life
External force, which is destroyed, which almost can forever use, read convenient, data reliably, without external electric power need not both consume any energy.Pass through
Monitoring pipe is passed through gas into U-tube pressure gauge, forces the liquid level in U-tube to change after air pressure increase, so as to pass through quarter
Spend ruler and read pressure.
Further, the tested property management and the monitoring pipe winding mutually, the tested property management and the monitoring pipe
Output port separates.
Through the above technical solutions, after being entered due to the gas of output in U-tube pressure gauge and wall-hung boiler, if monitoring pipe
Interior gas is changed by ectocine temperature, and inconsistent with the temperature of gas in tested property management, gas, which expands with heat and contract with cold, to lead
Cause the liquid level in U-tube to change, cause accuracy of detection to reduce；Tested property management and monitoring pipe after winding, is tested property management mutually
Heat exchange occurs with the gas in monitoring pipe, so that tested property management is identical with the gas temperature monitored in pipe or reduces temperature
Difference, further improves accuracy of detection.
Further, the tested property management and the side of the monitoring pipe winding section are provided with thermal insulation layer.
Through the above technical solutions, thermal insulation layer can completely cut off the heat in the external world, tested property management, the gas in monitoring pipe are avoided
With it is extraneous and heat exchange occurs, further improve accuracy of detection.
Further, the tested property management manages coaxial setting with the monitoring, and the diameter of the monitoring pipe is less than described
Tested property management, the output port of the monitoring pipe run through the outer wall of the tested property management.
Through the above technical solutions, since tested property management manages coaxial setting with monitoring, the heat-exchange surface of gas is improved
Product, so that tested property management is identical with the gas temperature monitored in pipe or reduces the temperature difference, further improves accuracy of detection.
Further, it is provided with support chip between the outer wall of the monitoring pipe and the inner wall of the tested property management.
Through the above technical solutions, on the one hand support chip avoids the outer wall of monitoring pipe from being close to the inner wall for being tested property management, it is another
Heat is conducted to the gas in monitoring pipe by support chip, increases the heat exchange of gas by aspect, the gas being tested in property management
Area, further improves accuracy of detection.
Further, the side of the monitoring pipe and tested one section of the property management out-of-alignment is provided with heat insulation layer.
Through the above technical solutions, heat insulation layer can completely cut off the heat in the external world, avoid gas in monitoring pipe with it is extraneous and
Generation heat exchange, further improves accuracy of detection.
Compared with prior art, the beneficial effects of the utility model are：
(1) by setting monitoring pipe and pressure gauge, while read what is shown on pressure gauge and differential pressure type air-tightness leak detector
The pressure of primary standard substance, if pressure is equal, illustrates that differential pressure type air-tightness leak detector is not revealed, if the pressure of primary standard substance is small
In the pressure of pressure gauge, illustrate that leakage occurs for differential pressure type air-tightness leak detector, it is necessary to calibrate, so as to find that differential pressure type is airtight in time
Property leak detector exception, improve accuracy of detection；
(2) by the way that by tested property management and the winding mutually of monitoring pipe, heat exchange occurs for the gas for being tested property management and monitoring in pipe,
So that tested property management is identical with the gas temperature monitored in pipe or reduces the temperature difference, accuracy of detection is further improved；
(3) by setting support chip, on the one hand support chip avoids the outer wall of monitoring pipe from being close to the inner wall for being tested property management, another
Heat is conducted to the gas in monitoring pipe by support chip, increases the heat exchange of gas by aspect, the gas being tested in property management
Area, further improves accuracy of detection.
Brief description of the drawings
Fig. 1 is the overall schematic of embodiment one；
Fig. 2 is the overall schematic of embodiment two；
Fig. 3 is that pipe line A-A sectional view along Fig. 2 is monitored in embodiment two；
Fig. 4 is B portions enlarged drawing in Fig. 2.
Reference numeral：1st, differential pressure type air-tightness leak detector；2nd, gas source pipe；3rd, gas tube；4th, benchmark property management；5th, measured object
Pipe；6th, exhaust pipe；7th, monitoring pipe；8th, charge valve；9th, balanced valve；10th, valve is monitored；11st, air bleeding valve；12nd, differential pressure pick-up；13、
Pressure gauge；14th, wall-hung boiler；15th, primary standard substance inner cavity；16th, thermal insulation layer；17th, support chip；18th, heat insulation layer；19th, through hole.
Embodiment
With reference to the accompanying drawings and examples, the utility model is described in detail.
Embodiment one：
As shown in Figure 1, a kind of air-tightness detection device, including differential pressure type air-tightness leak detector 1, the leak detection of differential pressure type air-tightness
Instrument 1 is the CH050 of Anhui Wanyi Science and Technology Co., Ltd.'s production, its structure and principle are the prior art, no longer superfluous herein
State.Differential pressure type air-tightness leak detector 1 includes gas source pipe 2, gas tube 3, and gas source pipe 2 is connected with air source of the gas.The output of gas tube 3
Port is communicated with benchmark property management 4, tested property management 5, exhaust pipe 6 and the monitoring pipe 7 of parallel connection.Benchmark property management 4 is used for into primary standard substance
Air is passed through, tested property management 5 is used to be passed through air into wall-hung boiler 14, and after detection, exhaust pipe 6 is used to discharge wall-hung boiler
14 and primary standard substance in remaining gases at high pressure.
Charge valve 8 is mounted on gas source pipe 2 and gas tube 3, balance is both provided with benchmark property management 4 and tested property management 5
Valve 9, monitors and monitoring valve 10 is provided with pipe 7, air bleeding valve 11 is provided with exhaust pipe 6, between benchmark property management 4 and tested property management 5
Equipped with differential pressure pick-up 12.The output port of monitoring pipe 7 is provided with pressure gauge 13, and pressure gauge 13 is preferably U-tube pressure gauge, is supervised
The output port of test tube 7 is connected with a mouth of pipe of U-tube pressure gauge, and U-tube manometer is hung vertically on fixed stent.
Monitor pipe 7 and be used for the input air into U-tube pressure gauge, whether detection differential pressure type air-tightness leak detector 1 is revealed.
During work, charge valve 8, balanced valve 9 and monitoring valve 10 are opened, closes air bleeding valve 11, gas tube 3 is by being tested property management
5 and benchmark property management 4 wall-hung boiler 14 and primary standard substance inner cavity 15 are inflated respectively；After default inflationtime, it will inflate
Valve 8 is closed, so stop inflation, close balanced valve 9 and monitoring valve 10 so that U-tube pressure gauge, primary standard substance and wall-hung boiler 14 it
Between path be cut off；Differential pressure type air-tightness leak detector 1 shows wall-hung boiler 14 by monitoring the signal intensity of differential pressure pick-up 12
Differential pressure measuring leakage rate；Since the aeration quantity in the pressure and primary standard substance in U-tube pressure gauge is consistent, while read U
The pressure of the primary standard substance shown on type tube manometer and differential pressure type air-tightness leak detector 1, if pressure is equal, illustrates differential pressure type gas
Close property leak detector 1 is not revealed；If the pressure of primary standard substance is less than the pressure of pressure gauge 13, illustrate that differential pressure type air-tightness is hunted leak
Leakage occurs for instrument 1, it is necessary to calibrate, so as to find the exception of differential pressure type air-tightness leak detector 1 in time, improves accuracy of detection.
After being entered due to the gas of output in U-tube pressure gauge and wall-hung boiler 14, if the gas in monitoring pipe 7 is by the external world
Influence temperature to change, inconsistent with the temperature of gas in tested property management 5, gas, which expands with heat and contract with cold, can cause U-tube pressure gauge
Interior liquid level changes, and causes accuracy of detection to reduce.Therefore, property management 5 is tested to wind and be bonded to each other mutually with monitoring pipe 7,
Tested property management 5 is separated with monitoring the output port of pipe 7, and the side that tested property management 5 winds section with monitoring pipe 7 is provided with thermal insulation layer
16, thermal insulation layer 16 can use polyurethane foamed material.
Mutually after winding, heat exchange occurs tested property management 5 and monitoring pipe 7 for the gas for being tested property management 5 and monitoring in pipe 7, from
And make tested property management 5 identical with the gas temperature monitored in pipe 7 or reduce the temperature difference, thermal insulation layer 16 can completely cut off the heat in the external world
Amount, avoids tested property management 5, the gas in monitoring pipe 7 and the external world and heat exchange occurs, further improve accuracy of detection.
The course of work of embodiment one and have the beneficial effect that：
During work, charge valve 8, balanced valve 9 and monitoring valve 10 are opened, closes air bleeding valve 11, gas tube 3 is by being tested property management
5 and benchmark property management 4 wall-hung boiler 14 and primary standard substance inner cavity 15 are inflated respectively；After default inflationtime, it will inflate
Valve 8 is closed, so stop inflation, close balanced valve 9 and monitoring valve 10 so that U-tube pressure gauge, primary standard substance and wall-hung boiler 14 it
Between path be cut off；Differential pressure type air-tightness leak detector 1 shows wall-hung boiler 14 by monitoring the signal intensity of differential pressure pick-up 12
Differential pressure measuring leakage rate；Since the aeration quantity in the pressure and primary standard substance in U-tube pressure gauge is consistent, while read U
The pressure of the primary standard substance shown on type tube manometer and differential pressure type air-tightness leak detector 1.
If pressure is equal, illustrate that differential pressure type air-tightness leak detector 1 is not revealed；If the pressure of primary standard substance is less than pressure
The pressure of power meter 13, illustrates that leakage occurs for differential pressure type air-tightness leak detector 1, it is necessary to calibrate, so as to find that differential pressure type is airtight in time
Property leak detector 1 exception, improve accuracy of detection.Thermal insulation layer 16 can completely cut off the heat in the external world, avoid tested property management 5, monitoring pipe 7
Interior gas with it is extraneous and heat exchange occurs, further improve accuracy of detection.
Embodiment two：
As shown in Fig. 2, a kind of air-tightness detection device, difference lies in be tested property management 5 and monitoring pipe 7 with embodiment one
Coaxial setting, the diameter of monitoring pipe 7 are less than tested property management 5, and the output port of monitoring pipe 7 runs through the outer wall of tested property management 5.By
In tested property management 5 and monitoring 7 coaxial setting of pipe, the heat exchange area of gas is improved, is managed so that being tested property management 5 and monitoring
Gas temperature in 7 is identical or reduces the temperature difference, improves accuracy of detection.
As shown in Figures 2 and 3, in order to further improve accuracy of detection, the outer wall of pipe 7 and the tested property management 5 are monitored
Support chip 17 is provided between inner wall, support chip 17 is multiple around 7 circumferential spaced set of monitoring pipe, is preferably 8, so that
There is the gap for air circulation between adjacent support chip 17, the through hole 19 for air circulation can be opened up on support chip 17.
Support chip 17 is made of the high material of thermal conductivity, is preferably stainless steel substrates.17 one side of support chip avoids the outer wall of monitoring pipe 7
It is close to the inner wall of tested property management 5, on the other hand, heat is conducted to monitoring pipe 7 by the gas in tested property management 5 by support chip 17
Interior gas, increases the heat exchange area of gas so that the gas temperature in tested property management 5 and monitoring pipe 7 it is identical or
Reduce the temperature difference.
As shown in Figure 2 and Figure 4, in order to reduce the influence of gas temperature in outer bound pair monitoring pipe 7, pipe 7 and the quilt are monitored
The side for surveying one section of 5 out-of-alignment of property management is provided with heat insulation layer 18, and heat insulation layer 18 is made of polyurethane material.18 energy of heat insulation layer
Enough extraneous heats of isolation, avoid the gas in monitoring pipe 7 and the external world and heat exchange occur, further improve accuracy of detection.
The course of work of embodiment two and have the beneficial effect that：
During work, while read the pressure of the primary standard substance shown on U-tube pressure gauge and differential pressure type air-tightness leak detector 1.
If pressure is equal, illustrate that differential pressure type air-tightness leak detector 1 is not revealed；If the pressure of primary standard substance is less than pressure gauge 13
Pressure, illustrates that leakage occurs for differential pressure type air-tightness leak detector 1, it is necessary to calibrate, so as to find differential pressure type air-tightness leak detector 1 in time
Exception, improve accuracy of detection.
17 one side of support chip avoids the outer wall of monitoring pipe 7 from being close to the inner wall of tested property management 5, on the other hand, is tested property management 5
Heat is conducted to the gas in monitoring pipe 7 by support chip 17 by interior gas, increases the heat exchange area of gas, so that
Tested property management 5 is identical with the gas temperature monitored in pipe 7 or reduces the temperature difference.Avoiding gas from expanding with heat and contract with cold causes U-tube pressure
Liquid level in meter changes.Heat insulation layer 18 can completely cut off the heat in the external world, avoid tested property management 5, the gas in monitoring pipe 7 with
It is extraneous and heat exchange occurs, further improve accuracy of detection.
The above is only the preferred embodiment of the utility model, and the scope of protection of the utility model is not limited merely to
Above-described embodiment, all technical solutions belonged under the utility model thinking belong to the scope of protection of the utility model.It should refer to
Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (7)
1. a kind of air-tightness detection device, including differential pressure type air-tightness leak detector（1）, the differential pressure type air-tightness leak detector（1）
Including gas source pipe（2）, gas tube（3）, benchmark property management（4）, tested property management（5）, the benchmark property management（4）With tested property management（5）
With the gas tube（3）Output port connection, the gas tube（3）On be provided with charge valve（8）, the benchmark property management
（4）With tested property management（5）On be both provided with balanced valve（9）, it is characterised in that the gas tube（3）Output port be connected with
Exhaust pipe（6）And air bleeding valve（11）, the gas tube（3）Output port be also associated with monitoring pipe（7）, the monitoring pipe
（7）Output port be provided with pressure gauge（13）, the monitoring pipe（7）On be provided with monitoring valve（10）；
The benchmark property management（4）With tested property management（5）Between be equipped with differential pressure pick-up（12）.
2. air-tightness detection device according to claim 1, it is characterised in that the pressure gauge（13）For U-tube pressure
Meter, the monitoring pipe（7）Output port be connected with a mouth of pipe of the U-tube pressure gauge.
3. air-tightness detection device according to claim 2, it is characterised in that the tested property management（5）With the monitoring
Pipe（7）Winding mutually, the tested property management（5）Managed with the monitoring（7）Output port separate.
4. air-tightness detection device according to claim 3, it is characterised in that the tested property management（5）With the monitoring
Pipe（7）The side of winding section is provided with thermal insulation layer（16）.
5. air-tightness detection device according to claim 2, it is characterised in that the tested property management（5）With the monitoring
Pipe（7）Coaxial setting, the monitoring pipe（7）Diameter be less than the tested property management（5）, the monitoring pipe（7）Output terminal
Mouth runs through the tested property management（5）Outer wall.
6. air-tightness detection device according to claim 5, it is characterised in that the monitoring pipe（7）Outer wall with it is described
Tested property management（5）Inner wall between be provided with support chip（17）, the support chip（17）Around the monitoring pipe（7）It is circumferential equidistant
It is arranged to multiple, the support chip（17）It is made of Heat Conduction Material.
7. air-tightness detection device according to claim 6, it is characterised in that the monitoring pipe（7）With the measured object
Pipe（5）The side that one section of out-of-alignment is provided with heat insulation layer（18）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721219386.0U CN207351630U (en) | 2017-09-21 | 2017-09-21 | A kind of air-tightness detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721219386.0U CN207351630U (en) | 2017-09-21 | 2017-09-21 | A kind of air-tightness detection device |
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| Publication Number | Publication Date |
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| CN207351630U true CN207351630U (en) | 2018-05-11 |
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ID=62410482
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| CN201721219386.0U Active CN207351630U (en) | 2017-09-21 | 2017-09-21 | A kind of air-tightness detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679295A (en) * | 2018-08-16 | 2018-10-19 | 真兰仪表科技有限公司 | A kind of detection device and its application method for detecting gas meter valve leakage |
-
2017
- 2017-09-21 CN CN201721219386.0U patent/CN207351630U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679295A (en) * | 2018-08-16 | 2018-10-19 | 真兰仪表科技有限公司 | A kind of detection device and its application method for detecting gas meter valve leakage |
| CN108679295B (en) * | 2018-08-16 | 2024-02-09 | 真兰仪表科技有限公司 | Detection equipment for detecting leakage of gas meter valve and application method thereof |
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Effective date of registration: 20200623 Address after: No.2000 guangqiong Road, economic and Technological Development Zone, Jiaxing City, Zhejiang Province, 314000 Patentee after: Xiderri heating and cooling equipment Co., Ltd Address before: 201600 Songjiang District 3, 4, Guanghua Road, Songjiang District, Shanghai Patentee before: BDR THERMEA (SHANGHAI) Co.,Ltd. |