CN202229849U - Pipeline section multi-measuring-point digital temperature sensor - Google Patents
Pipeline section multi-measuring-point digital temperature sensor Download PDFInfo
- Publication number
- CN202229849U CN202229849U CN2011203357741U CN201120335774U CN202229849U CN 202229849 U CN202229849 U CN 202229849U CN 2011203357741 U CN2011203357741 U CN 2011203357741U CN 201120335774 U CN201120335774 U CN 201120335774U CN 202229849 U CN202229849 U CN 202229849U
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- temperature sensor
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- temperature
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Abstract
The utility model discloses a pipeline section multi-measuring-point digital temperature sensor which includes a stainless steel sleeve, an installing nut, a bolt, temperature measuring elements, a lead, an insulating sleeve, and a sealing ring. The temperature measuring elements are arranged in the stainless steel sleeve. The stainless steel sleeve is sealed in the bolt. One end of the lead is connected with the temperature measuring elements, and the other end is introduced from the tail of the bolt. The lead is arranged in the insulating sleeve. The insulating sleeve is arranged in the stainless steel sleeve. The number of the temperature measuring elements is at least two. The temperature measuring elements are connected in parallel via the lead. The temperature measuring elements are distributed in the stainless steel sleeve according to a certain interval or a certain proportion. The pipeline section multi-measuring-point digital temperature sensor overcomes the defects of inaccurate temperature measurement and large measured value fluctuation in some circumstances.
Description
Technical field
The utility model belongs to the temperature measurement technology field, relates to a kind of temperature sensor, especially a kind of conduit section multi-measuring point digital temperature sensor.
Background technology
The freezing process pipeline system comprises outlet main, branch road and loop main; Whenever one branch road is arranged on the main of outlet at a distance from a segment distance; Sum has tens to up to a hundred usually; These branch roads are deep into always and are arranged in underground freezing pipe in advance, and salt solution comes out the link circuit main after getting into the freezing pipe circulation again from freezing pipe.Its working method is: through the refrigeration machine refrigeration; From brine tank, the outlet main of flowing through arrives each freezing pipe to the salt solution that reaches certain subzero temperature, accomplishes the cooling to the soil body through pumping; Import the loop main then; Get back to the refrigeration machine back of freezing once more via the loop main and arrive brine tank, so form and freeze the circulation system, to reach the purpose of Freezing stratum as rapid.To go, loop main and branch road place temperature monitoring be that the freezing process engineering is essential.Single-point digital temperature sensor at present commonly used carries out temperature survey.
Like Fig. 1, shown in Figure 2, single-point digital temperature sensor outward appearance comprises just like a bolt, lead-in wire A, and insulating sleeve B installs nut C, O RunddichtringO D, standard thread stainless steel bolt E, stainless steel sleeve pipe F, temperature element G.Lead-in wire A is connected with temperature element G, draw from the stainless steel bolt tail, and lead-in wire A seals with insulating sleeve B.Temperature element G, insulating sleeve B place stainless steel sleeve pipe F, and stainless steel sleeve pipe F is encapsulated in the stainless steel bolt through welding manner, and is non-leakage to guarantee.Insert the effect that epoxide-resin glue plays fixing temperature element G and sealing in the stainless steel sleeve pipe F.Stainless steel bolt is provided with standard thread E and nut C is installed, and can screw in the nut that is welded in advance on the tube wall, with fixation of sensor like this.O RunddichtringO D is located at the installation nut C side on the stainless steel bolt E, plays sealing function.The lead-in wire of each sensor is linked into bus, is directly connected to the computer terminal, can directly read the temperature of each measuring point of any time on computers.
But there are some problems in the one point sensing device that uses at present.The first, one point sensing device length is shorter, and the degree of depth that gets into pipeline is less; Generally be applicable to the branch road brine pipeline that diameter is less, and it is bigger to remove, return the main line pipe diameter, and because the tube wall heat radiation; Brine temp is widely different on conduit section; The position temperature near from tube wall is higher than the brine temp that leans on the conduit axis position, so the temperature of measuring is actually the brine temp value by the tube wall place, this causes measured temperature to be higher than real full section average temperature value.The second, the one point sensing device is certain any temperature value on the measuring channel section only, can't reflect full section medial temperature more exactly.In artificial freezing engineering, be in order to monitor accurately to freezing the residing frozen state of the soil body (as freezing developing stage, the intensity of Frozen Soil) to the monitoring purpose of temperature.Therefore, the appearance of the problems referred to above can bring adverse influence.For overcoming the problem that these two factors produce, be necessary temperature sensor is improved.
The utility model content
The utility model purpose is to overcome the shortcoming that exists one point sensing device length to lack, only can measure some temperature of section in the prior art, and a kind of conduit section multi-measuring point digital temperature sensor is provided.
For reaching above purpose, the solution of the utility model is:
A kind of multi-measuring point digital temperature sensor comprises the stainless steel sleeve pipe, nut, bolt, temperature element, lead-in wire, insulating sleeve and O-ring seal is installed, and temperature element places in the stainless steel sleeve pipe; The stainless steel sleeve pipe is packaged in the bolt; The end that goes between connects temperature element, and the other end is drawn from the bolt tail end; Lead-in wire is located in the insulating sleeve, and insulating sleeve places the stainless steel sleeve pipe; Temperature element is at least two, and lead-in wire is connected in series temperature element with parallel way.
Further, said temperature element is distributed in the stainless steel sleeve pipe by a determining deviation or certain proportion.
Gap between said insulating sleeve and the stainless steel sleeve pipe adopts epoxide-resin glue to fill.
Said installation nut is located on the stainless steel bolt.
Said O-ring seal is located at the installation nut side on the stainless steel bolt.
Said temperature element has built-in chip, and built-in chip is the chip that has unique coding and support the networking addressing.
Said built-in chip be temperature-measuring range at-55 ℃～+ 125 ℃, the chip of error ± 0.5 ℃.
Owing to adopted above technical scheme, the utlity model has following beneficial effect: temperature survey is inaccurate in some cases to have overcome prior art, and the shortcoming that the measured value fluctuation is very big is with a wide range of applications.
Description of drawings
Fig. 1 is that the single measuring point temperature sensor before improving is installed on the synoptic diagram on the pipeline.
Fig. 2 is the single measuring point temperature sensor organigram before improving.
Fig. 3 is that a kind of embodiment of the utility model is installed on the synoptic diagram on the pipeline.
Fig. 4 is a kind of embodiment conduit section of the utility model multi-measuring point digital temperature sensor organigram.
Embodiment
Below in conjunction with the accompanying drawing illustrated embodiment the utility model is further described.
Like Fig. 3; The scheme of installation of the utility model embodiment; The conduit section multi-measuring point digital temperature sensor of the utility model go deep into parameters such as length (effective length), measuring point quantity, measuring point distribution, fibrous root is confirmed according to actual conditions such as internal diameter of the pipeline, monitoring needs.It shown in Fig. 3, Fig. 4 a full section multimetering temperature sensor.In order to cover required measurement temperature range (arriving tube wall for the center of circle in this example), selecting the effective thermometric length of sensor (length of distribution measuring point) is 2/3rds of main internal diameter.So just can measure the temperature that receives the less middle part of ectocine on the main section, and then calculate the full face medial temperature of pipeline.
The concrete structure of conduit section multi-measuring point digital temperature sensor is as shown in Figure 4, comprises lead-in wire 1, and insulating sleeve 2 is installed nut 3, O RunddichtringO 4, standard thread stainless steel bolt 5, stainless steel sleeve pipe 6, temperature element 7.Wherein, temperature element 7 is arranged in the stainless steel sleeve pipe by certain intervals (example is depicted as even distribution among the figure), is provided with five temperature elements in the present embodiment.Lead-in wire 1 is connected in series temperature element 7 with parallel way, the lead-in wire 1 usefulness insulating sleeve 2 between the temperature element 7 entangles; Insulating sleeve 2 places stainless steel sleeve pipe 6, and stainless steel sleeve pipe 6 adopts welding manner to be encapsulated in the stainless steel bolt 5, and is non-leakage to guarantee; Lead-in wire 1 is drawn from the afterbody of stainless steel bolt 5, and goes between and 1 adopt insulating sleeve 2 insulation.The fixedly effect of temperature element and sealing is adopted epoxide-resin glue to fill to play in gap between insulating sleeve 2 and the stainless steel sleeve pipe 6.Stainless steel bolt 5 is provided with standard thread and nut 3 is installed, can screw in the nut that is welded in advance on the tube wall like this, thus fixation of sensor.O RunddichtringO 4 is located at installation nut 3 sides on the stainless steel bolt 5, plays sealing function.Just can measure the temperature value that same section leaves pipeline axle center different distance through the temperature sensor after such improvement.The temperature element built-in chip, each chip has unique coding, supports the networking addressing, temperature-measuring range-55 ℃～+ 125 ℃, one-wire bus digital temperature sensing chip DS18B20 is generally adopted in error ± 0.5 ℃.In this multipoint mode temperature sensor, adopt the mode of connection of one-wire bus, promptly the lead-in wire of each sensing element is connected to bus with parallel way, reduces number of leads, reduces sensor bulk and convenient for wiring purpose thereby reach.Each sensor bus is formed in the system of network insertion computer terminal, just can accomplish real-time monitoring easily.
The utility model can be applicable in liquid or the gas transmission pipeline and uses.One is used the typical case is the artificial stratum freezing process salt water circulating pipe of (being called for short " freezing process "), to the accurate measurement of brine temp.
The above-mentioned description to embodiment is can understand and use the utility model for the ease of the those of ordinary skill of this technical field.The personnel of skilled obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the utility model is not limited to the embodiment here, and those skilled in the art are according to the announcement of the utility model, and not breaking away from the improvement that the category of the utility model makes and revise all should be within the protection domain of the utility model.
Claims (7)
1. a multi-measuring point digital temperature sensor comprises the stainless steel sleeve pipe, nut, bolt, temperature element, lead-in wire, insulating sleeve and O-ring seal is installed, and temperature element places in the stainless steel sleeve pipe; The stainless steel sleeve pipe is packaged in the bolt; The end that goes between connects temperature element, and the other end is drawn from the bolt tail end; Lead-in wire is located in the insulating sleeve, and insulating sleeve places the stainless steel sleeve pipe; It is characterized in that: temperature element is at least two, and lead-in wire is connected in series temperature element with parallel way.
2. multi-measuring point digital temperature sensor as claimed in claim 1 is characterized in that: said temperature element is distributed in the stainless steel sleeve pipe by a determining deviation or certain proportion.
3. multi-measuring point digital temperature sensor as claimed in claim 1 is characterized in that: the gap between said insulating sleeve and the stainless steel sleeve pipe adopts epoxide-resin glue to fill.
4. multi-measuring point digital temperature sensor as claimed in claim 1 is characterized in that: said installation nut is located on the stainless steel bolt.
5. multi-measuring point digital temperature sensor as claimed in claim 1 is characterized in that: said O-ring seal is located at the installation nut side on the stainless steel bolt.
6. multi-measuring point digital temperature sensor as claimed in claim 1 is characterized in that: said temperature element has built-in chip, and built-in chip is the chip that has unique coding and support the networking addressing.
7. multi-measuring point digital temperature sensor as claimed in claim 6 is characterized in that: said built-in chip be temperature-measuring range at-55 ℃～+ 125 ℃, the chip of error ± 0.5 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203357741U CN202229849U (en) | 2011-09-08 | 2011-09-08 | Pipeline section multi-measuring-point digital temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203357741U CN202229849U (en) | 2011-09-08 | 2011-09-08 | Pipeline section multi-measuring-point digital temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202229849U true CN202229849U (en) | 2012-05-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203357741U Expired - Fee Related CN202229849U (en) | 2011-09-08 | 2011-09-08 | Pipeline section multi-measuring-point digital temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202229849U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500859A (en) * | 2016-11-22 | 2017-03-15 | 新奥泛能网络科技股份有限公司 | A kind of digital thermometer and system for detecting temperature |
| CN111535814A (en) * | 2020-05-07 | 2020-08-14 | 中国建筑第二工程局有限公司 | Precise stratum freezer and operation method thereof |
-
2011
- 2011-09-08 CN CN2011203357741U patent/CN202229849U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500859A (en) * | 2016-11-22 | 2017-03-15 | 新奥泛能网络科技股份有限公司 | A kind of digital thermometer and system for detecting temperature |
| CN111535814A (en) * | 2020-05-07 | 2020-08-14 | 中国建筑第二工程局有限公司 | Precise stratum freezer and operation method thereof |
| CN111535814B (en) * | 2020-05-07 | 2022-08-19 | 中国建筑第二工程局有限公司 | Precise stratum freezer and operation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20140908 |
|
| EXPY | Termination of patent right or utility model |