CN210268771U - Thermal mass flow meter with double-sealing structure - Google Patents
Thermal mass flow meter with double-sealing structure Download PDFInfo
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- CN210268771U CN210268771U CN201921374989.7U CN201921374989U CN210268771U CN 210268771 U CN210268771 U CN 210268771U CN 201921374989 U CN201921374989 U CN 201921374989U CN 210268771 U CN210268771 U CN 210268771U
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- connecting rod
- ball valve
- gland packing
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Abstract
The utility model provides a hot type mass flow meter with double containment structure, it includes: the gauge outfit, the connecting rod, a sensor, gauge outfit bottom fixedly connected with connector, the connecting rod top is provided with the nut that matches the connector, the connecting rod rotates and connects the gauge outfit, be provided with the ball valve on the connecting rod, be provided with seal assembly on the ball valve, seal assembly includes gland packing and lock nut, the gland packing cup joints on the quilt connecting rod, be provided with the bellying on the gland packing, the bellying sets up along gland packing circumference, the bellying separates into gland packing and lower gland packing with the gland packing, lower gland packing fixed connection ball valve, fixed connection lock nut on the upper gland packing, be provided with the sealing washer on the upper gland packing and between the lock nut, ball valve bottom fixedly connected with sensor. The utility model discloses compare in prior art and can increase the leakproofness, reach the effect that improves measurement accuracy.
Description
Technical Field
The utility model relates to a flowmeter field particularly, relates to a hot type mass flow meter with double containment structure.
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.
The hot type mass flow meter who exists in the existing market, the sealed majority of ball valve and connecting rod adopt lock nut locking, have the problem of gas leakage, influence measuring result, also can have the potential safety hazard simultaneously, endanger people's life safety.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a hot type mass flowmeter with double-seal structure, the utility model discloses a set up the sealed tube between ball valve and connecting rod, can increase the leakproofness to reach the effect that improves measurement accuracy.
Therefore, the utility model provides a hot type mass flow meter with double containment structure, it includes: the gauge outfit, the connecting rod, a sensor, gauge outfit bottom fixedly connected with connector, the connecting rod top is provided with the nut that matches the connector, the connecting rod rotates and connects the gauge outfit, be provided with the ball valve on the connecting rod, be provided with seal assembly on the ball valve, seal assembly includes gland packing and lock nut, the gland packing cup joints on the quilt connecting rod, be provided with the bellying on the gland packing, the bellying sets up along gland packing circumference, the bellying separates into gland packing and lower gland packing with the gland packing, lower gland packing fixed connection ball valve, fixed connection lock nut on the upper gland packing, be provided with the sealing washer on the upper gland packing and between the lock nut, ball valve bottom fixedly connected with sensor.
Further, the sensor comprises a speed sensor and a temperature sensor, the speed sensor and the temperature sensor are connected with the gauge outfit through wires, and the wires are arranged in the connecting rod.
Further, be provided with the protective sheath on the above-mentioned sensor, protective sheath threaded connection is in the ball valve bottom.
Furthermore, a through hole is formed in the protective sleeve, and the sensor is located in the through hole.
Furthermore, the connecting rod is provided with scales.
Furthermore, the nut is provided with a fluid flow direction indication mark.
The utility model provides a hot type mass flow meter with double containment structure, the gauge outfit has mainly been set up, the connecting rod, a sensor, this gauge outfit bottom fixedly connected with connector, the connecting rod top is provided with the nut that matches the connector, the connecting rod rotates and connects the gauge outfit, be provided with the ball valve on the connecting rod, be provided with seal assembly on the ball valve, seal assembly includes gland and lock nut, the gland cup joints on the connecting rod, be provided with the bellying on the gland, the bellying sets up along gland circumference, the bellying separates into gland and goes up gland and lower gland with the gland, gland fixed connection ball valve down, fixed connection lock nut on the last gland, go up the gland on and be provided with the sealing washer between the lock nut, ball valve bottom fixedly connected with sensor. When the ball valve is installed, the ball valve is firstly sleeved on the connecting rod, the lower sealing pipe is inserted into the ball valve, a sealing washer is arranged between the lower sealing pipe and the ball valve, the upper sealing pipe is sleeved with the red copper sealing ring, and the locking nut is used for locking, so that the sealing effect is improved.
The utility model provides a pair of hot type mass flow meter with double containment structure through set up the sealed tube between ball valve and connecting rod, can increase the leakproofness to reach the effect that improves measurement accuracy, can also improve the security of using.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a first schematic structural diagram of a thermal mass flow meter with a dual-seal structure according to an embodiment of the present invention;
FIG. 2 is an enlarged view of A in FIG. 1;
fig. 3 is a schematic structural diagram ii of a thermal mass flow meter with a dual-seal structure according to an embodiment of the present invention;
fig. 4 is an enlarged view of B in fig. 3.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The first embodiment is as follows:
referring to fig. 1 to 4, there is shown a thermal mass flowmeter with a dual sealing structure according to an embodiment of the present invention, which mainly includes a meter head 1, a connecting rod 2, and a sensor 3, wherein the bottom of the meter head 1 is fixedly connected with a connector 11, the top of the connecting rod 2 is provided with a nut 12 matching with the connector 11, the connecting rod 2 is rotatably connected with the meter head 1, the connecting rod 2 is provided with a ball valve 21, the ball valve 21 is provided with a sealing assembly 4, the sealing assembly 4 includes a sealing tube 41 and a locking nut 42, the sealing tube 41 is sleeved on the connecting rod 2, the sealing tube 41 is provided with a protrusion 411, the protrusion 411 is arranged along the circumference of the sealing tube 41, the sealing tube 41 is divided into an upper sealing tube 412 and a lower sealing tube 413 by the protrusion 411, the lower sealing tube 413 is fixedly connected with the ball valve 21, the upper sealing tube 412 is fixedly connected with the locking nut 42, a sealing ring 5 is arranged between the, the bottom of the ball valve 21 is fixedly connected with a sensor 3.
Specifically, referring to fig. 1 to 4, the sensor 3 includes a speed sensor and a temperature sensor, which are connected to the gauge outfit 1 through wires, which are disposed in the connecting rod 2.
Specifically, referring to fig. 1 to 4, the connecting rod 2 is provided with scales.
The utility model provides a hot type mass flow meter with double containment structure, the gauge outfit has mainly been set up, the connecting rod, a sensor, this gauge outfit bottom fixedly connected with connector, the connecting rod top is provided with the nut that matches the connector, the connecting rod rotates and connects the gauge outfit, be provided with the ball valve on the connecting rod, be provided with seal assembly on the ball valve, seal assembly includes gland and lock nut, the gland cup joints on the connecting rod, be provided with the bellying on the gland, the bellying sets up along gland circumference, the bellying separates into gland and goes up gland and lower gland with the gland, gland fixed connection ball valve down, fixed connection lock nut on the last gland, go up the gland on and be provided with the sealing washer between the lock nut, the sealing washer is the red copper sealing washer, ball valve bottom fixedly connected with sensor. When the ball valve is installed, the ball valve is firstly sleeved on the connecting rod, the lower sealing pipe is inserted into the ball valve, a sealing washer is arranged between the lower sealing pipe and the ball valve, the upper sealing pipe is sleeved with the red copper sealing ring, and the locking nut is used for locking, so that the sealing effect is improved.
The utility model provides a pair of hot type mass flow meter with double containment structure through set up the sealed tube between ball valve and connecting rod, can increase the leakproofness to reach the effect that improves measurement accuracy, can also improve the security of using.
Example two:
referring to fig. 1 to 4, a thermal mass flowmeter having a dual-seal structure according to an embodiment of the present invention is shown, and the present embodiment further adopts the following technical solutions as improvements on the basis of the above embodiment: the sensor 3 is provided with a protective sleeve 31, the protective sleeve 31 is in threaded connection with the bottom of the ball valve 21, a through hole 311 is formed in the protective sleeve 31, and the sensor 3 is located in the through hole 311.
The sensor need be placed in the measuring medium, has impurity in the medium, can bump bad sensor at the flow in-process, increases the protective sheath on the sensor, can avoid impurity collision sensor, protects the safety of sensor, and the trompil can improve measurement accuracy simultaneously.
Example three:
referring to fig. 1 to 4, a thermal mass flowmeter having a dual-seal structure according to a third embodiment of the present invention is shown, and the present embodiment further adopts the following technical solutions as improvements on the basis of the above embodiments: the nut 12 is provided with a fluid flow direction indicator.
In the installation process, the effect of sign is played, improves operation workman's installation effectiveness, prevents to adorn the contrary, influences the measuring result, protection instrument safety.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A thermal mass flow meter having a dual seal structure, comprising:
the device comprises a gauge head (1), a connecting rod (2) and a sensor (3), wherein the bottom of the gauge head (1) is fixedly connected with a connecting head (11), a nut (12) matched with the connecting head (11) is arranged at the top of the connecting rod (2), the connecting rod (2) is rotatably connected with the gauge head (1), a ball valve (21) is arranged on the connecting rod (2), a sealing assembly (4) is arranged on the ball valve (21), the sealing assembly (4) comprises a sealing pipe (41) and a locking nut (42), the sealing pipe (41) is sleeved on the connecting rod (2), a bulge (411) is arranged on the sealing pipe (41), the bulge (411) is arranged along the circumference of the sealing pipe (41), the sealing pipe (41) is divided into an upper sealing pipe (412) and a lower sealing pipe (413), and the lower sealing pipe (413) is fixedly connected with the ball valve (21), the upper sealing pipe (412) is fixedly connected with the locking nut (42), a sealing ring (5) is arranged between the upper sealing pipe (412) and the locking nut (42), and the bottom of the ball valve (21) is fixedly connected with a sensor (3).
2. A thermal mass flow meter with a dual sealing structure according to claim 1, characterized in that said sensor (3) comprises a speed sensor and a temperature sensor, said speed sensor and said temperature sensor are connected to said head (1) by wires, said wires are provided in said connecting rod (2).
3. The thermal mass flow meter with a dual sealing structure according to claim 1, wherein a protective sleeve (31) is provided on the sensor (3), the protective sleeve (31) being screwed on the bottom of the ball valve (21).
4. The thermal mass flow meter with a dual sealing structure according to claim 3, wherein the protective sleeve (31) is provided with a through hole (311), and the sensor (3) is located in the through hole (311).
5. The thermal mass flow meter with a dual sealing structure according to claim 1, wherein the connecting rod (2) is provided with a scale.
6. The thermal mass flow meter with a dual sealing structure according to claim 1, wherein the nut (12) is provided with a fluid flow direction indicating mark.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921374989.7U CN210268771U (en) | 2019-08-22 | 2019-08-22 | Thermal mass flow meter with double-sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921374989.7U CN210268771U (en) | 2019-08-22 | 2019-08-22 | Thermal mass flow meter with double-sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210268771U true CN210268771U (en) | 2020-04-07 |
Family
ID=70018034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921374989.7U Active CN210268771U (en) | 2019-08-22 | 2019-08-22 | Thermal mass flow meter with double-sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210268771U (en) |
-
2019
- 2019-08-22 CN CN201921374989.7U patent/CN210268771U/en active Active
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