CN208282995U - A kind of pressure-detecting device and pressure detecting system - Google Patents

A kind of pressure-detecting device and pressure detecting system Download PDF

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Publication number
CN208282995U
CN208282995U CN201820892354.5U CN201820892354U CN208282995U CN 208282995 U CN208282995 U CN 208282995U CN 201820892354 U CN201820892354 U CN 201820892354U CN 208282995 U CN208282995 U CN 208282995U
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pressure
detecting
main pipeline
test
devices
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CN201820892354.5U
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李庆堂
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ENN Science and Technology Development Co Ltd
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ENN Science and Technology Development Co Ltd
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Abstract

The utility model discloses a kind of pressure-detecting device and pressure detecting system, is related to technical field of pressure detection, under the premise of the internal pressure measurement accurately to guarantee Devices to test, reduces the probability of pressure gauge damage.The pressure-detecting device includes the main pipeline for being connected to internal chamber included by Devices to test, and the entrance of the main pipeline is connected to pressure-measuring pipe road and steam line respectively, and the pressure-measuring pipe road is equipped with pressure gauge.The pressure detecting system includes the pressure-detecting device that above-mentioned technical proposal is mentioned.Pressure-detecting device and pressure detecting system provided by the utility model are used for the gas pressure detection containing dust.

Description

A kind of pressure-detecting device and pressure detecting system
Technical field
The utility model relates to technical field of pressure detection more particularly to a kind of pressure-detecting device and pressure detecting systems System.
Background technique
In existing coal chemical industry generating process, using fluidized-bed gasification furnace by coal-fired gasification under certain pressure and temperature, And generate a large amount of raw gas and coal ash.Raw gas drives a small amount of coal ash to enter gas cleaning device, realizes to raw gas Purified treatment.
Currently, fluidized-bed gasification furnace is equipped with the pressure gauge for detecting the internal pressure of fluidized-bed gasification furnace, to guarantee Pressure requirements needed for the internal pressure of fluidized-bed gasification furnace reaches coal-fired gasification, to guarantee that coal-fired gasification is complete.But by Contain a small amount of coal ash in the raw gas generated of coal-fired gasification in fluidized-bed gasification furnace, so that the coal ash contained by raw gas is frequent Barometrical sense channel is blocked, pressure gauge pressure divergence detected is caused, influences operator to gasification furnace pressure just Really judgement, or even there is pressure gauge damage, but also the maintenance cost of pressure gauge rises.
Utility model content
The purpose of this utility model is to provide a kind of pressure-detecting device and pressure detecting systems, to reduce pressure gauge Under the premise of the probability of damage, guarantee that the internal pressure measurement of Devices to test is accurate.
To achieve the goals above, the utility model provides the following technical solutions:
A kind of pressure-detecting device, the pressure-detecting device include for being connected to internal chamber included by Devices to test Main pipeline, the entrance of the main pipeline is connected to pressure-measuring pipe road and steam line respectively, and the pressure-measuring pipe road is equipped with pressure Meter.
Compared with prior art, in pressure-detecting device provided by the utility model, the entrance of main pipeline is pressed with survey respectively Pipeline is connected to steam line, and pressure-measuring pipe road is equipped with pressure gauge, is based on this, included by main pipeline and the Devices to test in When portion's chamber, the gas for dedusting is passed through to main pipeline by steam line, so that the gas enters Devices to test Dust in main pipeline is removed, to guarantee that pressure gauge passes through the internal pressure of Devices to test measured by pressure-measuring pipe road and main pipeline It is not influenced by dust;The inside dust of Devices to test is also avoided simultaneously by main pipeline and pressure-measuring pipe road, and then blocks pressure The problem of sense channel of power meter.Therefore, pressure-detecting device provided by the utility model can reduce the machine of pressure gauge damage Rate reduces the maintenance cost of pressure gauge.
Moreover, in pressure-detecting device provided by the utility model, the entrance of main pipeline respectively with pressure-measuring pipe road and gas supply Pipeline connection, so that during surveying pressure, while steam line is passed through the gas for dedusting to main pipeline, these gases The dust in main pipeline can not only be removed, so that the internal pressure for the Devices to test that pressure gauge measures is not influenced by dust, But also the flow field in Devices to test can be disturbed, in favor of removing the dust that the internal pipeline of Devices to test is deposited, thus Reduce the internal pipeline maintenance maintenance cost of Devices to test.
The utility model additionally provides a kind of pressure detecting system, including pressure described in Devices to test and above-mentioned technical proposal Detection device, main pipeline included by the pressure-detecting device are connected to internal chamber included by Devices to test.
Compared with prior art, beneficial effect Yu the above-mentioned technical proposal institute of pressure detecting system provided by the utility model The beneficial effect for the pressure-detecting device stated is identical, and this will not be repeated here.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and constitutes one of the utility model Point, the exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the utility model Improper restriction.In the accompanying drawings:
Fig. 1 is the schematic diagram of application structure of pressure-detecting device provided by the embodiment of the utility model;
Fig. 2 is gas flow control principle block diagram in the utility model embodiment.
Appended drawing reference:
1- pressure-detecting device, 10- main pipeline;
11- pressure-measuring pipe road, 110- pressure gauge;
111- first switch part, 112- thermometer;
113- installing pipe, 12- steam line;
120- flowmeter, 121- second switch part;
2- Devices to test, 20- internal chamber;
3- controller.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts Every other embodiment obtained, fall within the protection scope of the utility model.
Referring to Fig. 1, pressure-detecting device 1 provided by the embodiment of the utility model Devices to test 2 detected can be The equipment such as gasification furnace, reaction kettle, the pressure-detecting device 1 include for being connected to internal chamber 20 included by Devices to test 2 Main pipeline 10, the entrance of main pipeline 10 is connected to pressure-measuring pipe road 11 and steam line 12 respectively, and pressure-measuring pipe road 11 is equipped with pressure Power meter 110.
When carrying out pressure detecting, main pipeline 10 is connected to internal chamber 20 included by Devices to test 2, and to supply Pipeline 12 is passed through gas to internal chamber 20 included by Devices to test 2 by main pipeline 10, to prevent included by Devices to test 2 Internal chamber 20 gas contained by dust pressure-measuring pipe road 11 entered by main pipeline 10, at this time using set by pressure-measuring pipe road 11 The pressure of internal chamber 20 included by some pressure measurement Devices to test 2 is accurate pressure.
Based on pressure-detecting device 1 provided by the embodiment of the utility model it is found that the entrance of main pipeline 10 is pressed with survey respectively Pipeline 11 is connected to steam line 12, and pressure-measuring pipe road 11 is equipped with pressure gauge 110.When main pipeline 10 and Devices to test 2 are wrapped When the internal chamber 20 included is connected to, the gas for dedusting is passed through to main pipeline 10 by steam line 12, so that the gas will The dust that Devices to test 2 enters in main pipeline 10 is removed, to guarantee that pressure gauge 110 is surveyed by pressure-measuring pipe road 11 and main pipeline 10 The internal pressure of the Devices to test 2 obtained is not influenced by dust;The inside dust for also avoiding Devices to test 2 simultaneously passes through supervisor Road 10 and pressure-measuring pipe road 11, and then the problem of the sense channel of retaining pressure meter 110.Therefore, pressure provided by the utility model Under the premise of detection device 1 can guarantee the internal pressure measurement accurately of Devices to test 2, the probability that pressure gauge 110 damages is reduced, This makes it possible to the maintenance costs for reducing pressure gauge 110.
In the prior art, before Devices to test driving, the internal pipeline for generally requiring device under test is cleared up, to prevent The only internal pipeline blocking of Devices to test, this makes the maintenance maintenance cost of the internal pipeline of Devices to test relatively high.And this reality In pressure-detecting device with new embodiment offer, the entrance of main pipeline 10 connects with pressure-measuring pipe road 11 and steam line 12 respectively It is logical, so that while steam line 12 is passed through the gas for dedusting to main pipeline 10, these gases are not during surveying pressure The dust in main pipeline 10 can be only removed, so that the internal pressure for the Devices to test 2 that pressure gauge 110 measures is not by the shadow of dust It rings, but also the flow field in Devices to test 2 can be disturbed, in favor of removing the dust that the internal pipeline of Devices to test 2 is deposited, To reduce the internal pipeline maintenance maintenance cost of Devices to test 2.
It should be noted that above-mentioned steam line 12 is also connected to air accumulator, to be mentioned using air accumulator to steam line 12 Supplied gas, while the gas pressure stored in air accumulator is greater than the air pressure of internal chamber 20 included by Devices to test 2, in this way It can guarantee that the gas of air accumulator enters internal chamber 20 included by Devices to test 2 by steam line 12 and main pipeline 10 When, gas provided by air accumulator, which has, preferably blocks dust to enter main pipeline 10.
In addition, the gas of internal chamber 20 included by gas temperature provided by above-mentioned steam line 12 and Devices to test 2 There is biggish difference, so that the gas that steam line 12 provides enters 2 institute of Devices to test by main pipeline 10 between temperature Including internal chamber 20 when, gas provided by steam line 12 can block internal chamber 20 included by Devices to test 2 Gas enters in main pipeline 10.And in order to avoid influencing 2 institute of Devices to test when gas provided by above-mentioned steam line 12 is more Including internal chamber 20 air pressure, radical length, the radical length of main pipeline 10 of above-mentioned steam line 12 are small as far as possible, So that steam line 12 provides a small amount of gas to main pipeline 10, achieve the purpose that clean main pipeline 10, and will not influence to The air pressure of internal chamber 20 included by measurement equipment 2.Moreover, when the radical length of steam line 12, the radial direction of main pipeline 10 are long Spend smaller, pressure of the provided gas in steam line 12 is bigger in air accumulator, and therefore, the utility model embodiment provides Steam line 12 and main pipeline 10 radical length it is smaller when, can not only control to inside included by Devices to test 2 Chamber 20 provides a small amount of gas, and can also ensure that provided gas pressure with higher, preferably to block powder Dirt enters main pipeline 10.
Specifically, as shown in Figure 1, gas provided by above-mentioned steam line 12 should with included by Devices to test 2 in The gas that portion's chamber 20 is accommodated does not react, and if has been passed through protection in internal chamber 20 included by Devices to test 2 Gas, then gas provided by steam line 12 is preferably identical as the component of the protective gas, to guarantee included by Devices to test 2 Internal chamber 20 in the protective gas that is passed through stablize.
Optionally, as shown in Figure 1, above-mentioned pressure-measuring pipe road 11 is additionally provided with the installing pipe 113 being connected to pressure-measuring pipe road 11, installation The axial direction of pipe 113 is vertical with gravity direction, and pressure gauge 110 is located at the end of installing pipe 113.Based on the structure, pressure gauge 110 survey pressure when state in which with 110 timing state in which of pressure gauge as, guarantee pressure gauge 110 indicating value it is accurate Property, avoid influence of the gravity for pressure gauge pointer.It is varied as the type of pressure gauge 110, such as flexible type pressure Power meter or the isolated pressure gauge of diaphragm etc..When pressure gauge 110 is the isolated pressure gauge of diaphragm, the diaphragm of the isolated pressure gauge of diaphragm It can isolate dust, prevent the sense channel of the dust blocking isolated pressure gauge of diaphragm.
Further, as shown in Figure 1, being additionally provided with such as valve first switch in the utility model embodiment on pressure-measuring pipe road 11 Part 111, first switch part 111 is between pressure gauge 110 and the entrance of main pipeline 10, easily to control pressure-measuring pipe road 11 It is turned on and off, and when pressure gauge 110 needs to safeguard, first switch part 111 can be closed, easily to dismantle pressure gauge 110.Meanwhile when pressure-measuring pipe road 11 includes the first pressure-measuring pipe road and the second pressure-measuring pipe road, the one end in the first pressure-measuring pipe road and supervisor The entrance in road 10 connects, and the other end in the first pressure-measuring pipe road is connect by first switch part 111 with the one end in the second pressure-measuring pipe road, The other end in the second pressure-measuring pipe road is connect with pressure gauge 110.It, can be not by Devices to test if necessary to safeguard the second pressure-measuring pipe road In the case where 20 effects of air pressure of internal chamber included by 2, by closing easily the second pressure-measuring pipe of disassembly of first switch part 111 Road and pressure gauge 110 safeguard the second pressure-measuring pipe road and pressure gauge 110.
Optionally, as shown in Figure 1, above-mentioned steam line 12 is equipped with second switch part 121 and flowmeter such as valve 120, control whether steam line 12 supplies using second switch part 121, and show present flow rate using flowmeter 120.Into One step can pass through close second switch at this time when second switch part 121 is between flowmeter 120 and the entrance of main pipeline 10 Part 121, to be safeguarded to flowmeter 120.Specifically, when steam line 12 includes the first steam line 12 and the second gas supply One end of pipeline, the first steam line is connect with the entrance of main pipeline 10, and the other end of the first steam line passes through second switch Part 121 is connect with one end of the second steam line, and flowmeter 120 is located on the second steam line, can not set in this way by be measured In the case where 20 effects of air pressure of internal chamber included by standby 2, by closing second switch part 121 easily to dismantle the second confession Feed channel and flowmeter 120 carry out conventional maintenance to the second steam line and flowmeter 120.
Further, as shown in Figure 1, above-mentioned second switch part 121 is the adjustable switch member of aperture, to utilize second switch part The gas supply flow of 121 control steam lines 12.When it is implemented, operating personnel can utilize second switch according to the actual situation Part 121 adjusts steam line 12, so that reaching blocking dust in the smallest situation of gas flow provided by steam line 12 Into the purpose of main pipeline 10.
In general, if gas provided by steam line 12 is under smaller flow, Devices to test 2 can be blocked completely The dust of included internal chamber 20 enters main pipeline 10, then the temperature in pressure pipeline should be equal to steam line 12 Internal temperature.If it find that the temperature in pressure pipeline fluctuates, then illustrate the temperature of the internal chamber 20 of detection device to The conduction of pressure pipeline, the sense channel of pressure gauge 110 has the risk of blocking, at this point, using second switch part 121 by air supply pipe Gas flow provided by road 12 increases, to avoid the generation of this problem.
And in order to which automation control steam line 12 provides the uninterrupted of air-flow, as depicted in figs. 1 and 2, above-mentioned reality The thermometer 112 for being additionally provided with the detection entrance positioned at pressure gauge 110 in example on pressure-measuring pipe road 11 is applied, with accurate detection pressure gauge 110 detection inlet temperature, second switch part 121 and thermometer 112 are electrically connected by controller 3.
When the temperature that above controller detects thermometer 112 is not within the scope of set temperature, then second switch is controlled Part 121 increases aperture, and at the temperature of thermometer 112 within the set range, setting range is the gas temperature of steam line 12 Spend range.
It should be noted that as shown in Figure 1, pressure-detecting device provided by the above embodiment 1 includes first switch part 111 When with second switch part 121, if Devices to test 2 is run, first switch part 111 is in opening state, to guarantee air supply pipe Gas pressure provided by road 12 can persistently be greater than the pressure of internal chamber 20 included by Devices to test 2, to reach guarantor It protects pressure gauge 110 and improves the purpose of 110 pressure detecting accuracy of pressure gauge.
Illustratively, as shown in Figure 1, being first turned on second switch part 121 when Devices to test 2 is just driven, guarantee gas supply Gas in pipeline 12 is passed through the internal chamber 20 of Devices to test 2, then opens first switch part 111 again, at this time pressure gauge 110 Measured pressure is the pressure that can correctly reflect inside Devices to test 2.When Devices to test parking, first switch part is closed 111, second switch part 121 stays open, so that the gas pressure in steam line 12 is consistently greater than the inner chamber of Devices to test 2 20 pressure of room, until the 20 pressure recovery normal pressure of internal chamber of Devices to test 2, to avoid the internal chamber 20 of Devices to test 2 Gas and dust pass through main pipeline 10 and enter steam line 12 and pressure-measuring pipe road 11.
The utility model embodiment additionally provides a kind of pressure detecting system, as shown in Figure 1, the pressure detecting system includes Devices to test 2 and pressure-detecting device provided by the above embodiment 1, main pipeline 10 included by the pressure-detecting device 1 with to The connection of internal chamber 20 included by measurement equipment 2.
Compared with prior art, the beneficial effect of pressure detecting system provided by the embodiment of the utility model and above-mentioned implementation The beneficial effect for the pressure-detecting device 1 that example provides is identical, and this will not be repeated here.
Above-mentioned main pipeline 10 is blocked in order to further avoid dust, as shown in Figure 1, main pipeline in the utility model embodiment The angle that 10 exit gas injection direction and gravity direction is in is acute angle, so that the outlet of main pipeline 10 is with obliquely Mode is directed toward the bottom of above-mentioned internal chamber 20.At this point, if the base falls for the dust internally chamber 20 that gas carries, this A little dust are difficult to fall in main pipeline 10, and therefore, pressure test system provided by the embodiment of the utility model can further be kept away Exempt from dust and enter main pipeline 10, ensure that the cleaning of pressure sensing channel.
It should be noted that as shown in Figure 1, the angle too small of above-mentioned acute angle, is easy so that gas carrying dust is (interior upwards The top of portion's chamber 20) when waving, it is directly entered in main pipeline 10, if the angle of above-mentioned acute angle is excessive, it is easy so that dust When (bottom of internal chamber 20) is fallen downwards, directly fall into main pipeline 10, be based on this, the angle of above-mentioned acute angle 20 °~ 70 °, further, the angle of above-mentioned acute angle is at 30 °~60 °, in this angular range, can guarantee dust hardly possible to greatest extent To enter in main pipeline 10, but can accurate detection to above-mentioned internal chamber 20 pressure.
Further, as shown in Figure 1, internal chamber 20 included by the not prominent Devices to test 2 in the outlet of above-mentioned main pipeline 10 Side wall, when being thus avoided that internal chamber 20 included by Devices to test 2 is protruded into the outlet of main pipeline 10, disturb and to be measured set Gas flowfield in internal chamber 20 included by standby 2, to guarantee gas stream in internal chamber 20 included by Devices to test 2 Field is stablized, and the generation of unsafe accident is avoided.
Specifically, when the side wall of internal chamber 20 included by the not prominent Devices to test 2 in the outlet of above-mentioned main pipeline 10, The side wall of internal chamber included by Devices to test 2 offer with the through-hole that be connected to of outside, above-mentioned main pipeline 10 by through-hole and The connection of internal chamber included by Devices to test 2, the outlet of principal security main pipeline 10 does not protrude included by the Devices to test Internal chamber side wall.
Such as: the outlet of main pipeline 10 is connect with through-hole away from one end of internal chamber, alternatively, main pipeline 10 protrudes into through-hole It is interior, but the outlet of main pipeline 10 cannot protrude the side wall of internal chamber included by Devices to test 2 or main pipeline 10 protrude into it is logical In hole, and the outlet of main pipeline 10 is concordant with the side wall of internal chamber included by Devices to test 2.
In the description of above embodiment, particular features, structures, materials, or characteristics can be at any one or more It can be combined in any suitable manner in a embodiment or example.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with the power Subject to the protection scope that benefit requires.

Claims (10)

1. a kind of pressure-detecting device, which is characterized in that including the master for being connected to internal chamber included by Devices to test Pipeline, the entrance of the main pipeline are connected to pressure-measuring pipe road and steam line respectively, and the pressure-measuring pipe road is equipped with pressure gauge.
2. pressure-detecting device according to claim 1, which is characterized in that be additionally provided with first switch on the pressure-measuring pipe road Part, the first switch part is between the pressure gauge and the entrance of the main pipeline.
3. pressure-detecting device according to claim 1, which is characterized in that the steam line is equipped with second switch part And flowmeter, the second switch part is between the flowmeter and the entrance of the main pipeline.
4. pressure-detecting device according to claim 3, which is characterized in that be additionally provided on the pressure-measuring pipe road described in being located at The thermometer of the detection entrance of pressure gauge, the second switch part are the adjustable switch member of aperture, the second switch part and institute Thermometer is stated to be electrically connected with the controller respectively.
5. pressure-detecting device according to any one of claims 1 to 4, which is characterized in that the steam line and gas storage Tank connection.
6. pressure-detecting device according to any one of claims 1 to 4, which is characterized in that the pressure-measuring pipe road is additionally provided with The installing pipe being connected to the pressure-measuring pipe road, the axial direction of the installing pipe is vertical with gravity direction, and the pressure gauge is located at The end of the installing pipe.
7. a kind of pressure detecting system, which is characterized in that including the pressure inspection of any one of Devices to test and claim 1~6 Device is surveyed, main pipeline included by the pressure-detecting device is connected to internal chamber included by Devices to test.
8. pressure detecting system according to claim 7, which is characterized in that the outlet of the main pipeline it is not prominent described to The side wall of internal chamber included by measurement equipment.
9. pressure detecting system according to claim 7, which is characterized in that the exit gas injection direction of the main pipeline The angle for being in gravity direction is acute angle.
10. pressure detecting system according to claim 9, which is characterized in that the acute angle is 20 °~70 °.
CN201820892354.5U 2018-06-08 2018-06-08 A kind of pressure-detecting device and pressure detecting system Active CN208282995U (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110715764A (en) * 2019-10-24 2020-01-21 中互电气(江苏)有限公司 Sensor with strong moisture-proof capability
CN111649869A (en) * 2020-06-23 2020-09-11 西安航天计量测试研究所 Non-contact pressure measuring method and system based on strain and temperature sensors

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110715764A (en) * 2019-10-24 2020-01-21 中互电气(江苏)有限公司 Sensor with strong moisture-proof capability
CN110715764B (en) * 2019-10-24 2021-05-25 中互电气(江苏)有限公司 Sensor with strong moisture-proof capability
CN111649869A (en) * 2020-06-23 2020-09-11 西安航天计量测试研究所 Non-contact pressure measuring method and system based on strain and temperature sensors
CN111649869B (en) * 2020-06-23 2021-10-15 西安航天计量测试研究所 Non-contact pressure measuring method and system based on strain and temperature sensors

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