TWI421476B - Temperature sensing device - Google Patents

Description

Temperature sensing element

The present invention relates to a temperature sensing element, and more particularly to a temperature sensing element having a temperature sensing rod.

Whether it is industrial or everyday, the use of pipelines to transport fluids is a time-saving and cost-effective method. The fluid state is subject to different changes due to external factors such as temperature, which in turn affects the safety of the operation or the yield of the product. Therefore, the control of the fluid temperature is an important indicator. The temperature sensing rod is inserted into the pipeline to directly measure the fluid temperature as a commonly used temperature sensing method.

1 is a schematic cross-sectional view of a conventional temperature sensing element, and FIG. 2 is a schematic view of the temperature sensing element of FIG. 1 connected to a pipeline. Referring to FIGS. 1 and 2 , the conventional temperature sensing element 100 includes a positioning cylinder 110 , a fixing member 130 , and a temperature sensing rod 150 . The fixture 130 has a head 132 and a tail 134, the head 132 is provided with an internal thread 133 and the tail 134 has an external thread 135. The external thread 135 of the tail portion 134 of the fixture 130 is coupled to the internal thread 53 of the tube wall 52 of the conduit 50 to secure the fastener 130 to the conduit 50. In addition, the positioning cylinder 110 has an external thread 112 , and the positioning cylinder 110 is coupled to the head 132 of the fixing member 130 through the combination of the external thread 112 and the internal thread 133 of the fixing member 130 . The temperature sensing rod 150 extends through the positioning cylinder 110 and the fixing member 130 into the pipe 50.

However, when the fluid in the line 50 is carried at a high pressure, it is easy to cause the member of the temperature sensing element 100 to be ejected by the high pressure due to inadvertent operation. For example, when the temperature sensing element 100 is to be disassembled, if the valve in the line 50 is not closed to stop the fluid delivery, the temperature sensing rod 150 is easily ejected by the pressure in the line 50, which may result in a temperature sensing rod. 150 damage or threat to the safety of the operator.

The present invention provides a temperature sensing element to improve operational safety.

In order to achieve the above advantages, the present invention provides a temperature sensing element including a fixing member and a temperature sensing rod. The fixing member has a first cylindrical portion, and an inner wall of the first cylindrical portion is provided with a first stopping structure protruding inwardly, and an outer wall of the first cylindrical portion is provided with a first coupling structure. The temperature sensing rod extends through the first cylindrical portion, and the side wall of the temperature sensing rod is provided with a second stopping structure protruding outward, and the second stopping structure is adapted to be received in the first cylindrical portion, and is suitable for A stop structure interferes with each other.

In an embodiment of the invention, the second stop structure is disposed at an end of the temperature sensing rod.

In an embodiment of the invention, at least one of the first stop structure and the second stop structure is annular.

In an embodiment of the invention, the fixing member further has a second cylindrical portion connected to the first cylindrical portion, and the temperature sensing rod further penetrates the second cylindrical portion, and the inside of the second cylindrical portion The diameter is larger than the inner diameter of the first cylindrical portion.

In an embodiment of the invention, the temperature sensing component further includes a positioning cylinder. The positioning cylinder is adapted to be coupled to the inner wall of the second cylindrical portion, and the temperature sensing rod further penetrates the positioning cylinder.

In an embodiment of the invention, the positioning cylinder has a connected third cylindrical portion and a fourth cylindrical portion, the outer diameter of the fourth cylindrical portion is larger than the outer diameter of the third cylindrical portion, and the third cylinder The outer wall of the portion is adapted to engage the inner wall of the second tubular portion.

In an embodiment of the present invention, the inner wall of the second tubular portion is provided with a second joint structure, and the outer wall of the third cylindrical portion of the positioning cylinder is provided with a third joint structure that cooperates with the second joint structure. .

In an embodiment of the invention, the first bonding structure, the second bonding structure and the third bonding structure are threads.

In an embodiment of the invention, the temperature sensing element further includes a leak stop ring disposed at a bottom portion of the second cylindrical portion, wherein the bottom portion connects the first cylindrical portion.

In an embodiment of the invention, the temperature sensing component further includes a leak stop ring disposed in the first cylindrical portion, and the second stop structure and the leak stop ring are located on opposite sides of the first stop structure.

In the temperature sensing element of the present invention, since the fixing member and the temperature sensing rod are provided with a stopper structure that can interfere with each other, when the temperature sensing element is detached, the temperature sensing rod can be prevented from being ejected due to excessive pressure.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

3 is a schematic diagram of a temperature sensing element in accordance with an embodiment of the present invention. Referring to FIG. 3 , the temperature sensing component 400 of the embodiment includes a fixing member 410 and a temperature sensing rod 430 . The fixing member 410 has a first cylindrical portion 412. The inner wall of the first cylindrical portion 412 is provided with a first stopping structure 412a protruding inwardly. The outer wall of the first cylindrical portion 412 is provided with a first coupling structure 412b. . The temperature sensing rod 430 penetrates the first cylindrical portion 412, and the side wall of the temperature sensing rod 430 is provided with a second stopping structure 432 that protrudes outward. The second stop structure 432 is adapted to be received within the first cylindrical portion 412 and adapted to interfere with the first stop structure 412a. That is, when the moving temperature sensing bar 430 moves the second stop structure 432 toward the first stop structure 412a, the second stop structure 432 can move into the first cylindrical portion 412. When the second stop structure 432 contacts the first stop structure 412a, the temperature sensing bar 430 cannot continue to move in the same direction.

The first bonding structure 412b is, for example, a thread, but is not limited thereto. The first joint structure 412b is coupled with a joint structure of a pipe (not shown) so that the first tubular portion 412 can be coupled to the pipe through the first joint structure 412b. In addition, at least one of the first stop structure 412a and the second stop structure 432 may be annular. That is, the first stop structure 412a is annular or the second stop structure 432 is annular (as shown in FIG. 4), or the first stop structure 412a and the second stop structure 432 are annular. . However, the present invention does not limit the shape of the first stop structure 412a and the second stop structure 432. In another embodiment shown in FIG. 5, the second stop structure 432' of the temperature sensing bar 430' can be comprised of a plurality of stops 433.

Referring to FIG. 3 and FIG. 4 again, the second stop structure 432 of the embodiment is disposed at the end of the temperature sensing bar 430, for example. However, in other embodiments, the second stop structure 432 can also be disposed at other locations of the temperature sensing bar 430 depending on design requirements. In addition, the second stopping structure 432 can be fixed to the temperature sensing rod 430 by welding or other means, or the second stopping structure 432 can be integrally formed with the temperature sensing rod 430.

Further, the fixing member 410 has, for example, a second cylindrical portion 414 connected to the first cylindrical portion 412, and the inner diameter of the second cylindrical portion 414 is larger than the inner diameter of the first cylindrical portion 412. The inner wall of the second cylindrical portion 414 is provided with a second joint structure 414a, and the temperature sensing rod 430 further penetrates the second cylindrical portion 414. In addition, the temperature sensing component 400 of the present embodiment further includes a positioning cylinder 450, and the temperature sensing rod 430 extends through the positioning cylinder 450. The positioning cylinder 450 has a connected third cylindrical portion 452 and a fourth cylindrical portion 454. The outer diameter of the fourth cylindrical portion 454 is larger than the outer diameter of the third cylindrical portion 452, and the outer wall of the third cylindrical portion 452 is provided. There is a third bonding structure 452a that mates with the second bonding structure 414a. The second joint structure 414a and the third joint structure 452a are, for example, threads, but are not limited thereto.

FIG. 6 is a schematic diagram of a temperature sensing element according to an embodiment of the present invention providing a function of preventing a pop-up bar from ejecting. Referring to FIG. 6, when the temperature sensing component 400 is coupled to the conduit 50, the fixture 410 is coupled to the conduit wall 52 of the conduit 50 by the first bonding structure 412b. The temperature sensing rod 430 extends through the positioning cylinder 450 and the fixing member 410 into the pipe 50. In addition, the third coupling structure 452a of the positioning cylinder 450 is combined with the second coupling structure 414a of the fixing member 410 to enable the positioning cylinder 450 to be fixed to the fixing member 410. This positioning cylinder 450 can prevent the temperature sensing rod 430 from shaking.

Based on safety considerations, if the temperature sensing component 400 is to be removed, the valve (not shown) in the pipeline may be closed before the fixture 410 and the positioning cylinder 450 are released. Next, the fixture 410 and the conduit 50 are loosened to remove the fixture 410 from the conduit 50.

When the fluid (such as gas or liquid) in the line 50 is transported at a high pressure, if the temperature sensing rod 430 is ejected away from the line 50 due to inadvertent operation or other factors, the second stop of the temperature sensing rod 430 The structure 432 can interfere with the first stop structure 412a to prevent the temperature sensing bar 430 from being ejected into the conduit 50. In this way, the temperature sensing rod 430 can be prevented from being damaged and the operator can be prevented from being injured.

In addition, the temperature sensing component 400 of the present embodiment may further include a leak stop ring 440a disposed in the first cylindrical portion 412, and the second stop structure 432 and the leak stop ring 440a are located in the first stop structure 412a. Relative sides. The material of the leakage preventing ring 440a may be an elastic material (for example, rubber), and the leakage preventing ring 440a abuts against the temperature sensing rod 430, so that the fluid can be further prevented from leaking out of the pipe 50. In addition, the temperature sensing component 400 further includes a leak stop ring 440b disposed in the bottom portion 415 of the second cylindrical portion 414, wherein the bottom portion 415 of the second cylindrical portion 414 is coupled to the first cylindrical portion 412. The leak stop ring 440b may further provide a function to prevent fluid from leaking out of the line. Moreover, when the positioning cylinder 450 is coupled to the fixing member 410, the positioning cylinder 450 presses the leakage preventing ring 440b to deform it, so that the temperature sensing rod 430 can be clamped by the leakage preventing ring 440b to be positioned.

It should be noted that although the temperature sensing element 400 described above includes the positioning cylinder 450, and the fixing member 410 includes the second cylindrical portion 414, in other embodiments, the temperature sensing element 400' (shown in FIG. 7) The positioning cylinder may not be included, and the fixing member 410' may not include the second cylindrical portion.

In summary, since the temperature sensing element of the present invention has two first stop structures and a second stop structure that interfere with each other, the temperature sensing rod of the temperature sensing element can be prevented from being ejected due to inadvertent operation. In addition, in an embodiment, the leakage preventing ring disposed in the second cylindrical portion can prevent the fluid in the pipeline from overflowing, and can further clamp the temperature sensing rod to position it.

While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.

50. . . Pipeline

52. . . Wall

53. . . internal thread

100. . . Temperature sensing element

110. . . Positioning cylinder

112. . . External thread

130. . . Fastener

132. . . head

133. . . internal thread

134. . . Tail

135. . . External thread

150. . . Temperature sensor

400, 400’. . . Temperature sensing element

410, 410’. . . Fastener

412. . . First tubular part

412a. . . First stop structure

412b. . . First combined structure

414. . . Second tubular portion

414a. . . Second combined structure

415. . . bottom

430, 430’. . . Temperature sensor

432, 432’. . . Second stop structure

433. . . Stoppers

440a. . . First leak stop ring

440b. . . Second stop ring

450. . . Positioning cylinder

452. . . Third tubular portion

452a. . . Third combined structure

454. . . Fourth tubular portion

1 is a schematic cross-sectional view of a conventional temperature sensing element.

2 is a schematic view of the temperature sensing element of FIG. 1 connected to a pipeline.

3 is a schematic diagram of a temperature sensing element in accordance with an embodiment of the present invention.

4 is a perspective view of a temperature sensing bar 430 of a temperature sensing element according to an embodiment of the present invention.

FIG. 5 is a perspective view of a temperature sensing rod of a temperature sensing element according to another embodiment of the present invention.

FIG. 6 is a schematic diagram of a temperature sensing element according to an embodiment of the present invention providing a function of preventing a pop-up bar from ejecting.

Figure 7 is a schematic illustration of a temperature sensing element in accordance with another embodiment of the present invention.

50. . . Pipeline

52. . . Wall

53. . . internal thread

400. . . Temperature sensing element

410. . . Fastener

412. . . First tubular part

412a. . . First stop structure

412b. . . First combined structure

414. . . Second tubular portion

415. . . bottom

414a. . . Second combined structure

430. . . Temperature sensor

432. . . Second stop structure

440a. . . First leak stop ring

440b. . . Second stop ring

450. . . Positioning cylinder

452. . . Third tubular portion

452a. . . Third combined structure

454. . . Fourth tubular portion

Claims (8)

A temperature sensing component for combining with a pipeline and sensing a temperature of a fluid transported in the pipeline, the temperature sensing component comprising: a fixing member having a first cylindrical portion and the same a second tubular portion connected to the tubular portion, the inner wall of the first cylindrical portion is provided with a first stop structure protruding inwardly, and the outer wall of the first cylindrical portion is provided with a first joint a structure, the fixing member is coupled to the pipeline by the first bonding structure; a temperature sensing rod penetrating the first cylindrical portion and the second cylindrical portion for sensing fluid transported in the pipeline a second stop structure protruding outwardly from the side wall of the temperature sensing bar, the second stop structure being adapted to be received in the first cylindrical portion and adapted to be coupled to the first stop structure Interacting with each other; a positioning cylinder adapted to be coupled to the inner wall of the second cylindrical portion, wherein the temperature sensing rod further penetrates the positioning cylinder; and a leakage stop ring disposed at the bottom of the second cylindrical portion, wherein The bottom portion is connected to the first cylindrical portion, and the leakage preventing ring abuts against the temperature sensing rod to prevent fluid from leaking out of the pipeline. When bound to the inner wall of the positioning cylinder of the second cylindrical portion, the positioning cylinder compression deforming the wearing ring, the wearing ring to the clamping by the sensing bar so positioned. The temperature sensing element of claim 1, wherein the second stop structure is disposed at one end of the temperature sensing rod. The temperature sensing element of claim 1, wherein at least one of the first stop structure and the second stop structure is annular. The temperature sensing element according to claim 1, wherein the The inner diameter of the two cylindrical portion is larger than the inner diameter of the first cylindrical portion. The temperature sensing element of claim 4, wherein the positioning cylinder has a third cylindrical portion and a fourth cylindrical portion, the outer diameter of the fourth cylindrical portion being larger than the third cylindrical portion An outer diameter of the portion, and an outer wall of the third cylindrical portion is adapted to be coupled to an inner wall of the second cylindrical portion. The temperature sensing element of claim 5, wherein the inner wall of the second cylindrical portion is provided with a second joint structure, and the outer wall of the third cylindrical portion of the positioning cylinder is provided with the first A third combined structure in which the combined structure is combined. The temperature sensing element of claim 6, wherein the first bonding structure, the second bonding structure and the third bonding structure are threads. The temperature sensing component of claim 1, further comprising a leak stop ring disposed in the first cylindrical portion, wherein the second stop structure and the leak stop ring are located in the first stop structure The opposite sides.