CN217953592U - Thermal gas mass flowmeter with stable zero points under different conditions - Google Patents
Thermal gas mass flowmeter with stable zero points under different conditions Download PDFInfo
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- CN217953592U CN217953592U CN202221840582.0U CN202221840582U CN217953592U CN 217953592 U CN217953592 U CN 217953592U CN 202221840582 U CN202221840582 U CN 202221840582U CN 217953592 U CN217953592 U CN 217953592U
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Abstract
The utility model discloses a thermal gas mass flowmeter with stable zero point under different conditions, which comprises a flow meter, wherein the front of the flow meter is provided with a through hole, and the outer wall of the through hole is connected with an observation screen through a sealing ring; the bottom of the flow instrument is provided with a first connecting pipe, the bottom of the first connecting pipe is movably connected with a second connecting pipe through a flange component, the bottom of the second connecting pipe is provided with a ball valve, and the bottom of the ball valve is provided with a sensor. The utility model discloses a hot type gas mass flow's sensor part comprises two reference level platinum resistance temperature sensor, adopts the bridge type loop, maintains the poor direct measurement mass flow of constant temperature that is higher than the fluid temperature, need not temperature and pressure compensation, measures conveniently, accurately, can obtain gaseous mass flow or standard volume flow to under the effect of sealing washer, the sealing washer can avoid observing the screen and be in the phenomenon that exposes back rainwater infiltration for a long time, guarantees hot type gas mass flow meter's stable use.
Description
Technical Field
The utility model relates to a hot type gas mass flow meter technical field particularly, relates to a stable hot type gas mass flow meter at zero point under different conditions.
Background
Thermal gas mass flowmeters are instruments that measure the flow of gas using the principle of thermal diffusion. The sensor consists of two reference level thermal Resistors (RTDs). One is a velocity sensor RH and one is a temperature sensor RMG which measures the change in gas temperature. When the two RTDs are placed in the gas being measured, with sensor RH being heated, the other sensor RMG is used to sense the temperature of the gas being measured. As the gas flow rate increases, the gas flow carries more heat away and the temperature of the sensor RH drops.
For example, patent No. CN215726166U discloses an insertion type thermal gas mass flowmeter, which comprises a flow monitoring rod, wherein a flow probe is arranged on the outer surface of one end of the flow monitoring rod, a flow meter is arranged on the outer surface of the other end of the flow monitoring rod, an upper fixed ring and a power supply interface are arranged on the outer wall of the flow meter, the upper fixed ring is located on one side of the power supply interface, a lower fixed ring is arranged on the outer wall of the flow monitoring rod, and an LED display screen is arranged on the outer surface of one end of the flow meter. The utility model discloses a be convenient for when using dismantle the installation of flowmeter, it is comparatively convenient when using, can improve work efficiency, the rubber pad can improve the leakproofness between solid ring and the pipeline down when using, the condition that can avoid revealing when using.
This hot type gas mass flow meter utilizes the rubber pad to improve the leakproofness between lower solid ring and the pipeline, can avoid the condition of revealing when using, but flow instrument exposes in the air for a long time, and its observation screen is in the phenomenon that probably appears rainwater infiltration after exposing for a long time, leads to its observation effect to descend to influence hot type gas mass flow meter's use.
An effective solution to the problems in the related art has not been proposed yet.
SUMMERY OF THE UTILITY MODEL
To the problem in the correlation technique, the utility model provides a stable hot type gas mass flow meter at zero point under the different conditions to overcome the above-mentioned technical problem that current correlation technique exists.
Therefore, the utility model discloses a specific technical scheme as follows:
a thermal gas mass flowmeter with stable zero points under different conditions comprises a flow meter, wherein one side of the top end of the flow meter is provided with a wire outlet nozzle, the front of the flow meter is provided with a through hole, and the outer wall of the through hole is connected with an observation screen through a sealing ring; the bottom end of the first connecting pipe is movably connected with the second connecting pipe through a flange component, the bottom end of the second connecting pipe is provided with a ball valve, the bottom end of the ball valve is provided with a sensor, and one side of the ball valve is provided with a rotating valve.
Furthermore, in order that the sealing ring can avoid the phenomenon of rainwater permeation after the observation screen is exposed for a long time under the action of the sealing ring, so that the observation stability is ensured, and the stable use of the thermal gas mass flowmeter is ensured, the sealing ring consists of a first sealing ring section and a second sealing ring section positioned below the first sealing ring section; the bottom end of the first sealing ring section is provided with a groove, and the groove is of a circular ring type structure; the top end of the second seal ring section is provided with a connecting assembly, and the top end of the connecting assembly extends into the groove; a plurality of circular ring type grooves are formed in the inner side wall of the groove, a first circular ring type convex ring is arranged on the inner side wall of the first seal ring section, and a second circular ring type convex ring is arranged on the inner side wall of the second seal ring section.
Further, in order to guarantee the sealing effect between the sealing washer is connected through coupling assembling, coupling assembling is including setting up the ring on second sealing washer section top and being located the recess, and the ring is provided with a plurality of couples on being close to the lateral wall in ring type groove, and the couple sets up to positive triangular pyramid structure, and a plurality of couples set up with the circular array in ring center.
Furthermore, in order to utilize the ring flange to connect with advantages such as its peculiar sealed reliable, intensity is high, accommodation is wide under the effect of ring flange subassembly, guarantee the leakproofness between connecting pipe one and the connecting pipe two to easy to assemble and dismantlement can improve the efficiency of work, and the ring flange subassembly is including setting up the last ring flange in a connecting pipe bottom, and the bottom of going up the ring flange is provided with down the ring flange, and goes up through a plurality of fixing bolt fixed connection between ring flange and the lower ring flange.
The beneficial effects of the utility model are that:
1. the utility model discloses a hot type gas mass flow's sensor part comprises two reference level platinum resistance temperature sensor, adopts the bridge type loop, maintains the poor direct measurement mass flow of constant temperature that is higher than fluid temperature, need not temperature and pressure compensation, measures convenient, accurate, can obtain gaseous mass flow or standard volume flow.
2. Under the effect of ring flange subassembly, utilize the ring flange to connect with its peculiar advantage such as reliable, the intensity is high, accommodation is wide, guarantee the leakproofness between connecting pipe one and the connecting pipe two to easy to assemble and dismantle, can improve the efficiency of work.
3. Under the effect of sealing washer, the phenomenon that the screen was in long-term exposure back rainwater infiltration can be avoided observing to the sealing washer to guarantee the stability of observing, thereby guarantee hot type gas mass flow meter's stable use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a thermal gas mass flowmeter with zero point stability under different conditions according to an embodiment of the invention;
fig. 2 is a schematic partial structural view of a thermal gas mass flowmeter with zero point stabilization under different conditions according to an embodiment of the invention;
FIG. 3 is an enlarged view of a portion of FIG. 1 at A;
fig. 4 is a schematic structural diagram of a sealing ring in a thermal gas mass flowmeter with zero point stabilization under different conditions according to an embodiment of the invention;
fig. 5 is an expanded schematic view of a seal ring in a thermal gas mass flow meter with zero point stabilization under different conditions according to an embodiment of the present invention;
FIG. 6 is a partial enlarged view at B in FIG. 5;
fig. 7 is a schematic structural diagram of a hook in a thermal gas mass flowmeter with stable zero point under different conditions according to an embodiment of the present invention.
In the figure:
1. a flow meter; 2. a wire outlet nozzle; 3. a through hole; 4. a seal ring; 401. a first seal ring segment; 402. a second seal ring segment; 403. a groove; 404. a connecting assembly; 4041. a circular ring; 4042. hooking; 405. a circular groove; 406. a first circular ring type convex ring; 407. a second circular ring type convex ring; 5. an observation screen; 6. a first connecting pipe; 7. a flange assembly; 701. an upper flange plate; 702. a lower flange plate; 703. fixing the bolt; 8. a second connecting pipe; 9. a ball valve; 10. a sensor; 11. the valve is rotated.
Detailed Description
For further explanation of the embodiments, the drawings are provided as part of the disclosure and serve primarily to illustrate the embodiments and, together with the description, to explain the principles of operation of the embodiments, and to provide further explanation of the invention and advantages thereof, it will be understood by those skilled in the art that various other embodiments and advantages of the invention are possible, and that elements in the drawings are not to scale and that like reference numerals are generally used to designate like elements.
According to the utility model discloses an embodiment provides a stable hot type gas mass flow meter at zero point under the different conditions.
The present invention will be further explained with reference to the accompanying drawings and specific embodiments, as shown in fig. 1-7, according to the present invention, a thermal gas mass flowmeter with stable zero point under different conditions comprises a flow meter 1, a wire outlet 2 is arranged on one side of the top end of the flow meter 1, a through hole 3 is arranged on the front side of the flow meter 1, and the outer wall of the through hole 3 is connected with an observation screen 5 through a sealing ring 4; the bottom of flow instrument 1 is provided with connecting pipe 6, and ring flange subassembly 7 and the second 8 swing joint of connecting pipe are passed through to the bottom of connecting pipe 6, and the bottom of connecting pipe two 8 is provided with ball valve 9, and the bottom of ball valve 9 is provided with sensor 10, and one side of ball valve 9 is provided with rotary valve 11.
In a specific application, a gasket is arranged between the top end of the ball valve 9 and the bottom end of the second connecting pipe 8.
With the aid of the above technical scheme, the utility model discloses a hot type gas mass flow's sensor part comprises two benchmark level platinum resistance temperature sensor, adopt the bridge type loop, maintain the poor direct measurement mass flow of constant temperature that is higher than fluid temperature, need not temperature and pressure compensation, it is convenient to measure, it is accurate, can obtain gaseous mass flow or standard volume flow, simultaneously under flange plate subassembly 7's effect, utilize the ring flange to connect with its distinctive sealed reliable, high strength, advantages such as accommodation is wide, guarantee the leakproofness between connecting pipe 6 and the connecting pipe two 8, and easy to assemble and dismantlement, can improve the efficiency of work, simultaneously under sealing washer 4's effect, sealing washer 4 can avoid observing screen 5 and be in the phenomenon of long-term exposure back rainwater infiltration, thereby guarantee the stability of observing, thereby guarantee hot type gas mass flow meter's stable use.
In one embodiment, for the above-mentioned seal ring 4, the seal ring 4 is composed of a first seal ring segment 401 and a second seal ring segment 402 located below the first seal ring segment 401; the bottom end of the first seal ring section 401 is provided with a groove 403, and the groove 403 is of a circular ring type structure; a connecting component 404 is arranged at the top end of the second seal ring section 402, and the top end of the connecting component 404 extends into the groove 403; be provided with a plurality of ring type grooves 405 on the inside wall of recess 403, coupling assembling 404 is including setting up the ring 4041 on second seal ring section 402 top and being located recess 403, and ring 4041 is provided with a plurality of couples 4042 on being close to the lateral wall in ring type groove 405, couple 4042 sets up to positive triangular pyramid structure, and a plurality of couples 4042 set up with the central circular array of ring 4041, be provided with first ring type bulge loop 406 on the inside wall of first seal ring section 401, be provided with second ring type bulge loop 407 on the inside wall of second seal ring section 402, thereby under sealing washer 4's effect, sealing washer 4 can avoid observing screen 5 and be in the phenomenon of exposing the back rainwater infiltration for a long time, thereby guarantee the stability of observing, thereby guarantee hot type gas mass flowmeter's stable use.
In an embodiment, for the flange plate assembly 7, the flange plate assembly 7 includes an upper flange plate 701 disposed at the bottom end of the first connecting pipe 6, a lower flange plate 702 is disposed at the bottom end of the upper flange plate 701, and the upper flange plate 701 and the lower flange plate 702 are fixedly connected through a plurality of fixing bolts 703, so that under the action of the flange plate assembly 7, the sealing performance between the first connecting pipe 6 and the second connecting pipe 8 is ensured by using the advantages of reliable sealing, high strength, wide application range, and the like of the flange plate connection, and the installation and the disassembly are convenient, and the working efficiency can be improved.
For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.
In practical application, firstly, the gas mass flowmeter uses a heat conduction technology as a basis to realize the measurement of gas mass flow, a measuring probe of the flowmeter is provided with two platinum resistance sensing elements which are placed in a fluid, one of the platinum resistance sensing elements is heated to T1 by heating power P, and the other platinum resistance sensing element is not heated and is used for monitoring the temperature of a medium and is set as T2; a temperature difference T = T1-T2 is then generated between the two sensor elements; when the flow is zero, the difference in temperature is the biggest, along with the increase of mass flow Q, sensing element T1's heat is taken away, T1 descends, the difference in temperature reduces, the change of difference in temperature can obtain mass flow Q, simultaneously under the effect of ring flange subassembly 7, through fixing bolt 703 with last ring flange 701 and lower ring flange 702 fixed connection, thereby the leakproofness between connecting pipe 6 and connecting pipe two 8 has been guaranteed, simultaneously under the effect of sealing washer 4, the leakproofness between observation screen 5 and the flow instrument 1 has been guaranteed, thereby make the data to the observation instrument that the observer can be more accurate observe.
To sum up, with the aid of the above technical scheme, the utility model discloses an hot type gas mass flow's sensor part comprises two benchmark level platinum resistance temperature sensor, adopt the bridge type loop, maintain the poor direct measurement mass flow who is higher than the constant temperature of fluid temperature, need not temperature and pressure compensation, it is convenient to measure, and is accurate, can obtain gaseous mass flow or standard volume flow, simultaneously under flange subassembly 7's effect, utilize the ring flange to connect with its distinctive sealed reliable, high strength, advantages such as accommodation is wide, guarantee the leakproofness between connecting pipe 6 and the connecting pipe two 8, and easy to assemble and dismantlement, can improve the efficiency of work, simultaneously under sealing washer 4's effect, sealing washer 4 can avoid observing screen 5 and be in the phenomenon of exposing the back rainwater infiltration for a long time, thereby guarantee the stability of observing, thereby guarantee hot type gas mass flow meter's stable use.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate medium, and may be used for communicating the inside of two elements or for interacting with each other, unless otherwise specifically defined, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to the specific circumstances.
The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a stable hot type gas mass flow meter of zero point under different conditions, includes flow instrument (1), and the top one side of this flow instrument (1) is provided with outlet nozzle (2), its characterized in that:
the front side of the flow meter (1) is provided with a through hole (3), and the outer wall of the through hole (3) is connected with an observation screen (5) through a sealing ring (4);
the bottom of flow instrument (1) is provided with connecting pipe (6), the bottom of connecting pipe (6) is passed through ring flange subassembly (7) and connecting pipe two (8) swing joint, the bottom of connecting pipe two (8) is provided with ball valve (9), the bottom of ball valve (9) is provided with sensor (10).
2. Thermal gas mass flowmeter for the stabilization of the zero point under different conditions according to claim 1, characterized in that a rotary valve (11) is provided on one side of the ball valve (9).
3. The thermal gas mass flow meter with zero point stability under different conditions according to claim 1, characterized in that the sealing ring (4) consists of a first sealing ring section (401) and a second sealing ring section (402) located below the first sealing ring section (401);
a groove (403) is formed in the bottom end of the first seal ring section (401), and the groove (403) is of a circular ring type structure;
a connecting component (404) is arranged at the top end of the second seal ring section (402), and the top end of the connecting component (404) extends into the groove (403);
a plurality of circular grooves (405) are formed in the inner side wall of the groove (403).
4. The thermal gas mass flow meter with zero point stabilization under different conditions according to claim 3, characterized in that the connection assembly (404) comprises a ring (4041) disposed at the top end of the second seal ring segment (402) and located in the groove (403), and a plurality of hooks (4042) are disposed on the side wall of the ring (4041) close to the ring groove (405).
5. The thermal gas mass flowmeter with zero point stabilization under different conditions according to claim 4, wherein the hooks (4042) are arranged in a regular triangular pyramid configuration and a number of the hooks (4042) are arranged in a circular array in the center of the ring (4041).
6. A thermal gas mass flowmeter with stable zero points under different conditions according to claim 3, wherein the first seal ring section (401) is provided with a first annular convex ring (406) on the inner side wall, and the second seal ring section (402) is provided with a second annular convex ring (407) on the inner side wall.
7. Thermal gas mass flowmeter with stable zero point under different conditions according to claim 1 or 2, characterized in that said flange assembly (7) comprises an upper flange (701) arranged at the bottom end of said first connection pipe (6), a lower flange (702) is arranged at the bottom end of said upper flange (701), and said upper flange (701) and said lower flange (702) are fixedly connected by means of a plurality of fixing bolts (703).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221840582.0U CN217953592U (en) | 2022-07-15 | 2022-07-15 | Thermal gas mass flowmeter with stable zero points under different conditions |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221840582.0U CN217953592U (en) | 2022-07-15 | 2022-07-15 | Thermal gas mass flowmeter with stable zero points under different conditions |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114225847A (en) * | 2021-12-23 | 2022-03-25 | 山东钧龙新能源科技有限公司 | Methanol flameless heating reactor and methanol flameless heating control method |
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2022
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114225847A (en) * | 2021-12-23 | 2022-03-25 | 山东钧龙新能源科技有限公司 | Methanol flameless heating reactor and methanol flameless heating control method |
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