CN216483561U - Double-layer sealing structure of built-in temperature sensor of ultrasonic wave band of fluid instrument - Google Patents
Double-layer sealing structure of built-in temperature sensor of ultrasonic wave band of fluid instrument Download PDFInfo
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- CN216483561U CN216483561U CN202122304871.0U CN202122304871U CN216483561U CN 216483561 U CN216483561 U CN 216483561U CN 202122304871 U CN202122304871 U CN 202122304871U CN 216483561 U CN216483561 U CN 216483561U
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Abstract
The utility model discloses a double-layer sealing structure of an ultrasonic waveband built-in temperature sensor of a fluid instrument, which comprises the following specific steps: the positioning hole on the measuring bracket is superposed and aligned with the positioning hole in the center of the measuring pipe section; and a temperature sensor assembly is arranged in the positioning hole. The temperature sensor assembly structure is as follows: the tail end of the temperature sensor is arranged in the support positioning nail, an O-shaped sealing ring is sleeved on the outer side of the support positioning nail, and the middle part of the temperature sensor is wrapped by a tubular sealing column. The utility model overcomes the defects of the traditional ultrasonic flow measurement built-in NTC seal assembly structure, and the designed double-layer seal structure greatly improves the seal effect in the subsequent use process, and can effectively solve the defects of the seal failure in the later production reworking and use processes.
Description
Technical Field
The utility model belongs to the technical field of ultrasonic electronic instruments and meters, and particularly relates to a double-layer sealing structure of an ultrasonic band built-in temperature sensor of a fluid instrument.
Background
The existing ultrasonic measuring instrument with a built-in temperature sensor realizes temperature compensation by inserting a standard PT1000\ PT100 temperature sensor into a pipe section and sealing the pipe section through a single O-shaped sealing ring, so that the sensor is high in cost, large in size and occupied in position, and the design of a shell is not very good in operation. Also there is prior art through measuring support location nail, realizes the integrative mode of location measurement temperature with the integrated encapsulating of location nail the inside encapsulating of temperature sensor, and sealed to lean on single O type sealing washer to seal, the shell of the location nail of this kind of mode is the mode preparation with the machine tooling, and the cost is higher, and the cost also can be higher if the encapsulation is integrated together, and single sealed risk is also bigger. The prior art is characterized in that a temperature sensor is assembled in a positioning nail by heat-conducting silicone grease, so that the function of positioning in temperature measurement is realized, and the sealing is realized by a single sealing column at the back of the positioning nail. The shell of the positioning nail is manufactured in a stamping mode, the cost is low, and the sealing risk by a single rear sealing column is high.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned deficiencies of the prior art, the present invention provides a double-layer sealing structure of a built-in temperature sensor in an ultrasonic band of a fluid instrument.
The utility model relates to a double-layer sealing structure of an ultrasonic waveband built-in temperature sensor of a fluid instrument, which comprises the following specific steps: the positioning hole on the measuring bracket is superposed and aligned with the positioning hole in the center of the measuring pipe section; and a temperature sensor assembly is arranged in the positioning hole. The temperature sensor assembly structure is as follows: the tail end of the temperature sensor is coated with heat-conducting silicone grease and then is installed in the support positioning nail, an O-shaped sealing ring is sleeved on the outer side of the support positioning nail, and the middle part of the temperature sensor is wrapped by a tubular sealing column.
Furthermore, the O-shaped sealing ring is arranged at the lower part of the flange edge of the bracket positioning nail.
Further, the sealing post abuts against the upper portion of the bracket positioning nail.
Furthermore, the outer diameter of the sealing column is equal to the inner diameter of the central positioning hole of the measuring pipe section.
The beneficial technical effects of the utility model are as follows:
the utility model has the advantages that the front and the back of the positioning shell of the temperature sensor have sealing functions, thereby achieving the double-layer sealing function and greatly improving the sealing effect in the subsequent use process. The defect of a traditional ultrasonic flow measurement built-in NTC seal assembly structure is overcome, and the designed scientific and reasonable seal structure can effectively overcome the defect of seal failure in the reworking and using processes of later-stage production.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic diagram of a temperature sensor assembly according to the present invention.
Detailed Description
The utility model is described in further detail below with reference to the figures and the detailed description.
The utility model discloses a double-layer sealing structure of an ultrasonic waveband built-in temperature sensor of a fluid instrument, which is shown in figure 1 and specifically comprises the following components: the positioning hole on the measuring bracket 5 is superposed and aligned with the positioning hole in the center of the measuring pipe section 6; and a temperature sensor assembly is arranged in the positioning hole. As shown in fig. 2, the temperature sensor assembly has the following structure: the tail end of the temperature sensor 2 is coated with heat-conducting silicone grease and then is installed in the support positioning nail 1, an O-shaped sealing ring 4 is sleeved on the outer side of the support positioning nail 1, and the middle part of the temperature sensor 2 is wrapped by a tubular sealing column 3.
Further, an O-shaped sealing ring 4 is arranged at the lower part of the flange edge of the bracket positioning nail 1.
Further, the sealing column 3 abuts against the upper part of the bracket positioning nail 1.
Furthermore, the outer diameter of the sealing column 3 is equal to the inner diameter of the central positioning hole of the measuring pipe section 6.
The assembly process of the utility model:
the measuring bracket 5 is placed into the measuring pipe section 6, and the positioning hole on the measuring bracket 5 is superposed and aligned with the positioning hole in the center of the measuring pipe section 6. Then the bracket positioning nail 1 sleeved with the O-shaped sealing ring 4 is placed into a central positioning hole of the measuring pipe section 6; and then the sealing column 3 is placed in the positioning hole to complete the assembly.
Claims (4)
1. A double-layer sealing structure of a built-in temperature sensor of an ultrasonic waveband of a fluid instrument is characterized in that a positioning hole on a measuring bracket (5) is superposed and aligned with a positioning hole in the center of a measuring pipe section (6); a temperature sensor assembly is arranged in the positioning hole;
the temperature sensor assembly structure is as follows: the tail end of the temperature sensor (2) is arranged in the support positioning nail (1), the outer side of the support positioning nail (1) is sleeved with an O-shaped sealing ring (4), and the middle part of the temperature sensor (2) is wrapped by a tubular sealing column (3).
2. The double-layer sealing structure of the ultrasonic in-band temperature sensor of the fluid instrument is characterized in that the O-shaped sealing ring (4) is arranged below the flange edge of the support positioning nail (1).
3. The double-layer sealing structure of the ultrasonic in-band temperature sensor of the fluid instrument is characterized in that the sealing column (3) abuts against the upper part of the bracket positioning nail (1).
4. The double-layer sealing structure of the ultrasonic in-band temperature sensor of the fluid instrument is characterized in that the outer diameter of the sealing column (3) is equal to the inner diameter of the centrally positioned hole of the measuring tube section (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122304871.0U CN216483561U (en) | 2021-09-23 | 2021-09-23 | Double-layer sealing structure of built-in temperature sensor of ultrasonic wave band of fluid instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122304871.0U CN216483561U (en) | 2021-09-23 | 2021-09-23 | Double-layer sealing structure of built-in temperature sensor of ultrasonic wave band of fluid instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216483561U true CN216483561U (en) | 2022-05-10 |
Family
ID=81436194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122304871.0U Active CN216483561U (en) | 2021-09-23 | 2021-09-23 | Double-layer sealing structure of built-in temperature sensor of ultrasonic wave band of fluid instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216483561U (en) |
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2021
- 2021-09-23 CN CN202122304871.0U patent/CN216483561U/en active Active
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