Anti-freezing device for pressure guide pipe

Abstract

The present disclosure relates to a kind of anti-freezing device of pressure guide pipe, comprising: outer sleeve;And inner sleeve, coaxially and spacedly arranged in the inside of outer sleeve, inner sleeve is used to be set on the outer periphery of pressure guide pipe, insulation layer is formed between outer sleeve and inner sleeve, two ends of insulation layer are sealed respectively, and heating part is arranged in insulation layer.Such design, insulation layer is formed between inner sleeve and outer sleeve, heating part is arranged in insulation layer, can make the temperature in insulation layer increase, to heat the pressure guide pipe in the inside of insulation layer and prevent freezing.When the pressure guide pipe is overhauled, only the whole anti-freezing device is removed from pressure guide pipe, when installing, only need to set inner sleeve again on pressure guide pipe, it is easy and fast to operate.Moreover, since heating part is arranged in the inside of insulation layer, it is not necessary to remove separately, so it will not cause the problem of uneven heating to different positions of pressure guide pipe due to displacement of heating part caused by repeated disassembly.

Description

Technical Field

[0001] This disclosure relates to the field of antifreeze technology for pressure-conducting pipelines, and more specifically, to an antifreeze device for pressure-conducting pipelines. Background Technology

[0002] The transmitter's measurement of the main pipeline mainly relies on the pressure-conducting pipeline on the main pipeline. The pressure-conducting pipeline is an external extension of the main pipeline. Since the pressure-conducting pipeline is connected to the inside of the main pipeline, it can meet the conditions for indirect measurement.

[0003] In cold weather, piping systems are prone to freezing. Freezing can affect the flow of liquids or gases, leading to inaccurate transmitter measurements. To address this, some technologies employ external insulation or a combination of external insulation and heating wire. External insulation has limited effectiveness, suitable only for milder regions. While the combination of external insulation and heating wire offers better insulation and freeze protection, it requires partial removal of insulation during maintenance of pressure-conducting pipelines. In practice, workers often fail to properly wrap the heating wire or insulation, resulting in incomplete coverage and gaps that allow freezing to occur inside the pipeline. Summary of the Invention

[0004] The purpose of this disclosure is to provide an antifreeze device for pressure-conducting pipelines to at least partially solve the problems existing in the related art.

[0005] To achieve the above objectives, this disclosure provides an antifreeze device for a pressure-conducting pipeline, comprising: an outer sleeve; and an inner sleeve, coaxially and spaced apart inside the outer sleeve, the inner sleeve being fitted onto the outer periphery of the pressure-conducting pipeline, wherein an insulation layer is formed between the outer sleeve and the inner sleeve, the two ends of the insulation layer are respectively sealed, and a heating element is provided inside the insulation layer.

[0006] Optionally, the heating element includes a thermoelectric cooler installed within the insulation layer, wherein the hot end of the thermoelectric cooler faces the outer wall of the inner sleeve, the cold end of the thermoelectric cooler faces the outer sleeve, and the outer sleeve has multiple air outlets at positions corresponding to the thermoelectric cooler.

[0007] Optionally, it further includes a heat insulation plate disposed within the insulation layer and surrounding the inner sleeve, the heat insulation plate having a through hole, the semiconductor cooling chip being embedded in the through hole, wherein the cold end and the hot end of the semiconductor cooling chip face the two sides of the heat insulation plate respectively, so as to form a thermal space between the heat insulation plate and the inner sleeve and a cold space between the heat insulation plate and the outer sleeve.

[0008] Optionally, it also includes two support bars supported between the inner sleeve and the outer sleeve. The two support bars extend along the axial direction of the inner sleeve and the outer sleeve respectively and are arranged at intervals to divide the insulation layer into a first space and a second space. The number of heat insulation plates is two and each is constructed as a curved surface with an arc cross-section. The two heat insulation plates are respectively installed in the corresponding first space or second space through the two support bars.

[0009] Optionally, it also includes an airflow generating component disposed at the right end of the insulation layer, the airflow generating component being used to blow outside air into the cold space so that the cold air in the cold space is discharged through the air outlet.

[0010] Optionally, the airflow generating assembly includes: a first short tube, which has the same diameter as the inner sleeve and is connected to the right end of the inner sleeve; a second short tube, which has the same diameter as the outer sleeve and is connected to the right end of the outer sleeve; two first annular protrusions, respectively formed on the outer wall of the first short tube near the inner sleeve, the two first annular protrusions being spaced apart and parallel; two second annular protrusions, respectively formed on the outer wall of the second short tube near the outer sleeve, the two second annular protrusions being spaced apart and parallel; and a first ring, which is rotatable. A second ring is rotatably mounted between the two first annular protrusions; a second ring is rotatably mounted between the two second annular protrusions, and the outer circumference of the second ring is provided with annular toothed grooves; multiple inclined plates are respectively connected between the first ring and the second ring; a motor is mounted on the outer wall of the second short pipe; and a transmission wheel is connected to the output shaft of the motor. The second short pipe has an opening at a position corresponding to the second ring so that the transmission wheel can mesh with the annular toothed grooves. Multiple air inlets are provided on the right side of the second short pipe located on the second ring.

[0011] Optionally, a baffle is provided at the end of the thermal space facing the airflow generating component.

[0012] Optionally, the first ring, the second ring, and the plurality of inclined plates are integrally formed.

[0013] Optionally, it further includes: a first annular plate disposed between the first short pipe and the second short pipe near the right end; a first annular end cap sealed to the right end of the first short pipe and the second short pipe; a second annular plate disposed within the insulation layer near the left end; and a second annular end cap sealed to the left end of the insulation layer, wherein a first insulation cotton is filled between the first annular plate and the first annular end cap, and a second insulation cotton is filled between the second annular plate and the second annular end cap.

[0014] Optionally, it further includes two first elastic support rings, one of which is installed on the side of the first annular end cap opposite to the first annular plate, and the other of which is installed on the side of the second annular end cap opposite to the second annular plate. One of the two first elastic support rings is used to elastically abut against the main pipeline of the pressure guiding line, and the other is used to elastically abut against the transmitter, which is used to measure the internal information of the main pipeline through the pressure guiding line.

[0015] Optionally, the heating element includes a heating wire or heating tube installed within the insulation layer.

[0016] Optionally, it further includes: a third annular end cap, sealed to the right end of the insulation layer; and a fourth annular end cap, sealed to the left end of the insulation layer.

[0017] Optionally, it further includes two second elastic support rings, one of which is installed on the side of the third annular end cap away from the insulation layer, and the other of which is installed on the side of the fourth annular end cap away from the insulation layer. One of the two second elastic support rings is used to elastically abut against the main pipeline of the pressure guiding line, and the other is used to elastically abut against the transmitter, which is used to measure the internal information of the main pipeline through the pressure guiding line.

[0018] The above technical solution forms an insulation layer between the inner and outer sleeves, with a heating element installed within this layer. This raises the temperature within the insulation layer, thus heating and preventing freezing of the pressure-conducting pipeline inside the insulation layer. During maintenance of the pressure-conducting pipeline, the entire antifreeze device can be removed from the pipeline as a whole; installation simply involves re-inserting the inner sleeve onto the pipeline, making the operation convenient and quick. Furthermore, since the heating element is located inside the insulation layer and does not require separate removal, repeated disassembly and reassembly avoid displacement of the heating element and uneven heating of different parts of the pressure-conducting pipeline.

[0019] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of an antifreeze device exemplarily shown according to this disclosure; Figure 2 yes Figure 1 The cross-sectional view of the antifreeze device shown in the figure along the parallel axial direction; Figure 3 yes Figure 1 The cross-sectional view of the antifreeze device shown in the figure omits the heating element; Figure 4 yes Figure 1 A partial schematic diagram of the airflow generating component of the antifreeze device is shown in the image; Figure 5 yes Figure 1 A cross-sectional view of the antifreeze device shown in the figure along the vertical axial direction; Figure 6 This is a schematic diagram of another antifreeze device exemplarily shown according to this disclosure; Figure 7 yes Figure 6 The cross-sectional view of the antifreeze device shown in the figure along the parallel axial direction; Figure 8 yes Figure 6 The image shows a cross-sectional view of the antifreeze device along the parallel axial direction, in which the inner sleeve is omitted.

[0021] Explanation of reference numerals in the attached figures 1-Outer sleeve; 101-Air outlet; 102-Air inlet; 2-Inner sleeve; 31-Hot space; 32-Cold space; 4-Insulation layer; 5-Heating unit; 501-Semiconductor cooling chip; 502-Heating tube; 6-Insulation plate; 7-Support strip; 801-First annular convex strip; 802-Second annular convex strip; 803-First ring; 804-Second ring; 805-Annular groove; 806-Inclined plate; 807-Motor; 808-Transmission wheel; 810-First short pipe; 811-Second short pipe; 9-Support column; 10-First annular plate; 11-First annular end cap; 12-Second annular plate; 13-Second annular end cap; 14-First insulation cotton; 15-Second insulation cotton; 16-First elastic support ring; 17-Third annular end cap; 18-Fourth annular end cap; 19-Second elastic support ring. Detailed Implementation

[0022] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0023] In this disclosure, unless otherwise stated, the directional terms "left" and "right" are used based on the directions defined in the accompanying drawings, specifically as follows: Figures 1-3 as well as Figures 6-8The directions shown in the diagram (see arrows) should be noted as follows: "left" and "right" correspond to the two ends of the inner sleeve and outer sleeve, respectively. The use of "left" and "right" is merely for ease of understanding and is not intended as a limitation. In other words, components installed at the left end of the inner sleeve and outer sleeve in this disclosure can also be installed at the right end in actual use, as long as they are located at the ends. The specific design can be adapted to the actual situation. "Inner" and "outer" refer to the contours of the relevant components. For example, the inner sleeve is used to fit around the "outer periphery" of the pressure-conducting pipeline, where "outer periphery" refers to the outer surface of the pressure-conducting pipeline; the inner sleeve is coaxially and spaced apart on the "inner side" of the outer sleeve, where "inner side" refers to the internal accommodating space of the outer sleeve.

[0024] In addition, the terms "first," "second," etc., used in this disclosure are for distinguishing one element from another and do not have sequential or importance. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0025] Reference Figures 1-8 This disclosure exemplarily illustrates an antifreeze device for a pressure-conducting pipeline, including an outer sleeve 1 and an inner sleeve 2 coaxially and spaced apart inside the outer sleeve 1, the inner sleeve 2 being fitted onto the outer periphery of the pressure-conducting pipeline. An insulation layer 4 is formed between the outer sleeve 1 and the inner sleeve 2, the two ends of the insulation layer 4 are sealed, and a heating element 5 is provided within the insulation layer 4.

[0026] In embodiments of this disclosure, the inner sleeve 2 and the outer sleeve 1 may be connected solely by an annular end cap, as will be mentioned below. Furthermore, in some other embodiments, a support strip, as will be mentioned below, may also be provided between the inner sleeve 2 and the outer sleeve 1. This disclosure does not limit this, as long as the inner sleeve 2 and the outer sleeve 1 can be spaced apart to form an insulation layer 4 for arranging the heating element 5.

[0027] This disclosure does not impose restrictions on how the two ends of the insulation layer 4 are sealed, for example, in Figures 5-8 In the illustrated embodiment, annular end caps (hereinafter referred to as end caps) can be directly applied to the ends of the inner sleeve 2 and the outer sleeve 1 for direct sealing. Furthermore, in Figures 1-3 In this embodiment, an annular end cap may also be provided at the right end of the first short tube 810 and the second short tube 811 to indirectly seal the right end of the insulation layer 4.

[0028] This disclosure does not limit the heating part 5, which can be a semiconductor cooling chip 501, an electric heating tube 502, an electric heating wire, etc.

[0029] By using the above technical solution, an insulation layer 4 is formed between the inner sleeve 2 and the outer sleeve 1. A heating element 5 is installed inside the insulation layer 4, which raises the temperature inside the insulation layer 4, thereby heating and preventing freezing of the pressure-conducting pipeline inside the insulation layer 4. When inspecting the pressure-conducting pipeline, the entire antifreeze device can be removed from the pipeline as a whole. Installation is simple: just replace the inner sleeve 2 onto the pressure-conducting pipeline. The operation is convenient and quick. Furthermore, since the heating element 5 is located inside the insulation layer 4, it does not need to be removed separately. Therefore, repeated disassembly will not cause displacement of the heating element 5, preventing uneven heating of different parts of the pressure-conducting pipeline.

[0030] As stated above, this disclosure does not limit the heating part 5, for example, in Figures 1-5 In this embodiment, the heating unit 5 may include a thermoelectric cooler 501 installed within the insulation layer 4. The hot end of the thermoelectric cooler 501 may face the outer wall of the inner sleeve 2, and the cold end of the thermoelectric cooler 501 may face the outer sleeve 1. Multiple air outlets 101 may be provided on the outer sleeve 1 at positions corresponding to the thermoelectric cooler 501. With this design, the hot end of the thermoelectric cooler 501 can generate heat to heat the pressure-conducting pipes inside the inner sleeve 2, while the cold air from the cold end of the thermoelectric cooler 501 can flow out through the air outlets 101, preventing the cold air from affecting the heat output of the hot end.

[0031] It should be explained that the thermoelectric cooler 501 is a type of heat pump. The thermoelectric cooler 501 operates using direct current (DC). It can both cool and heat, and the polarity of the DC current determines whether cooling or heating is achieved on the same cooler. This effect is achieved through the principle of thermoelectricity. It consists of two ceramic plates with N-type and P-type semiconductor materials in between, connected in series in the circuit. When an N-type semiconductor material and a P-type semiconductor material are connected to form a thermocouple pair, a DC current is applied to this circuit, resulting in energy transfer. The current flows from the N-type element to the P-type element, absorbing heat at the junction, becoming the cold junction; and flows from the P-type element to the N-type element, releasing heat at the junction, becoming the hot junction. The magnitude of heat absorption and release is determined by the magnitude of the current and the number of N and P semiconductor material pairs. The structure and heating principle of the thermoelectric cooler 501 are well known to those skilled in the art and will not be described in detail here. Since it requires electricity to operate, when the heating part 5 is a semiconductor cooling chip 501, the outer sleeve 1 can be provided with a wire passage hole for the wire to enter.

[0032] To avoid the cold air generated at the cold end diluting the hot air at the hot end, thus resulting in poor heating performance, refer to... Figure 2 and Figure 5In embodiments of this disclosure, the antifreeze device for the pressure-conducting pipeline may further include a heat insulation plate 6 disposed within the insulation layer 4 and surrounding the inner sleeve 2. The heat insulation plate 6 may have through holes, and a thermoelectric cooler 501 may be embedded in the through holes. The cold end and hot end of the thermoelectric cooler 501 face opposite sides of the heat insulation plate 6, respectively, to form a thermal space 31 between the heat insulation plate 6 and the inner sleeve 2, and a cold space 32 between the heat insulation plate 6 and the outer sleeve 1. By providing the heat insulation plate 6, the installation of the thermoelectric cooler 501 can be resolved, and the mutual interference between the cold and hot spaces can be avoided.

[0033] This disclosure does not limit the number and size of the thermoelectric coolers 501. For example, in some embodiments, the number of thermoelectric coolers 501 can be 20, 30, etc., and multiple thermoelectric coolers 501 can be evenly distributed on the heat insulation plate 6. Furthermore, in other embodiments, the number of thermoelectric coolers 501 can be one or two. In this case, the size of the thermoelectric coolers 501 needs to be larger to meet the heating requirements. The number and installation method of the thermoelectric coolers 501 can be adaptively designed according to actual conditions; the figures are only illustrative examples.

[0034] To secure the inner sleeve 2 and the outer sleeve 1, and to secure the insulation plate 6, refer to... Figure 5 In embodiments of this disclosure, the antifreeze device for the pressure-conducting pipeline may further include two support bars 7 supported between the inner sleeve 2 and the outer sleeve 1. The two support bars 7 may extend along the axial direction of the inner sleeve 2 and the outer sleeve 1 respectively and be arranged at intervals to divide the insulation layer 4 into a first space and a second space. By designing the support bars 7, a supporting function can be provided between the inner sleeve 2 and the outer sleeve 1, preventing relative movement between the two in the radial direction. The number of heat insulation plates 6 may be two, each constructed as a curved surface with an arc cross-section. The two heat insulation plates 6 may be installed in the corresponding first space or second space via the two support bars 7 respectively.

[0035] Preferably, in some embodiments, the two support strips 7 can divide the insulation layer 4 into a symmetrical first space and a second space. Furthermore, in other embodiments, the number of support strips 7 can be three, four, or similar.

[0036] In order to quickly exhaust the cold air in the cold space 32 through the air outlet 101, refer to Figures 1-5 In embodiments of this disclosure, the antifreeze device for the pressure-conducting pipeline may further include an airflow generating component disposed at the right end of the insulation layer 4. The airflow generating component can be used to blow outside air into the cold space 32 so that the cold air in the cold space 32 can be discharged through the air outlet 101. It should be noted that the right side here and the left side mentioned below are based on the direction of the arrow in the figure. In actual use, the left and right sides can be interchanged, and this will not be explained further below.

[0037] This disclosure does not impose any limitations on the specific structure of the airflow generating component; see reference to... Figures 1-5 In embodiments of this disclosure, the airflow generating assembly may include: a first short pipe 810, which has the same diameter as the inner sleeve 2 and is connected to the right end of the inner sleeve 2, specifically by welding or integral molding; a second short pipe 811, which has the same diameter as the outer sleeve 1 and is connected to the right end of the outer sleeve 1, specifically by welding or integral molding; two first annular protrusions 801, respectively formed on the outer wall of the first short pipe 810 near the inner sleeve 2, the two first annular protrusions 801 being spaced apart and parallel to form a first limiting groove, the first annular protrusions 801 being integrally formed with the first short pipe 810; and two second annular protrusions 802, respectively formed on the outer wall of the second short pipe 811 near the inner sleeve 2. At the position of the outer tube 1, two second annular protrusions 802 are spaced apart and parallel to each other to form a second limiting groove. The second annular protrusions 802 can be integrally formed with the second short tube 811. A first ring 803 is rotatably installed between the two first annular protrusions 801, that is, installed in the first limiting groove. A second ring 804 is rotatably installed between the two second annular protrusions 802, that is, installed in the second limiting groove. The outer circumference of the second ring 804 can be provided with an annular toothed groove 805. A plurality of inclined plates 806 are respectively connected between the first ring 803 and the second ring 804. A motor 807 is installed on the outer wall of the second short tube 811. A transmission wheel 808 is connected to the output shaft of the motor 807. The second short pipe 811 has an opening at the position corresponding to the second ring 804, so that the transmission wheel 808 can mesh with the annular toothed groove 805. Multiple air inlets 102 can be provided on the right side of the second short pipe 811, near the second ring 804. With this design, when the motor 807 is started during operation, the motor 807, through the transmission wheel 808 and the annular toothed groove 805, drives the first ring 803, the second ring 804, and multiple inclined plates 806 to rotate. This creates airflow through the inclined plates 806, drawing in external air from the air inlets 102 and into the cold space 32 via the inclined plates 806. The cold air in the cold space 32 is then discharged from the air outlet 101, preventing the temperature of the cold space 32 from becoming too low and affecting the antifreeze effect.

[0038] In addition to the above embodiments, in some other embodiments, an air vent that connects to the cold space 32 can be directly opened on the second short pipe 811 or the outer casing 1, and a fan for drawing outside air into the cold space 32 can be installed in the air vent. This disclosure does not limit this.

[0039] To prevent the airflow generated by the airflow generating component from flowing into the hot space 31 and affecting the antifreeze effect, in some embodiments, a baffle (not shown in the figure) may be provided at the end of the hot space 31 facing the airflow generating component.

[0040] This disclosure does not limit the connection method of the first ring 803, the second ring 804 and the plurality of inclined plates 806. For example, in some embodiments, the first ring 803, the second ring 804 and the plurality of inclined plates 806 can be integrally formed.

[0041] It should be noted that, in order to install the first ring 803 and the second ring 804 into the corresponding first limiting groove and the second limiting groove, in the embodiments of this disclosure, the first ring 803 and the second ring 804 can be made of elastic material (e.g., rubber) so that they can be deformed by applying external force during installation and installed into the corresponding limiting groove.

[0042] Reference Figures 1-3 In embodiments of this disclosure, the antifreeze device for the pressure-conducting pipeline may further include: a first annular plate 10, disposed near the right end between the first short pipe 810 and the second short pipe 811; a first annular end cap 11, sealing the right ends of the first short pipe 810 and the second short pipe 811; a second annular plate 12, disposed near the left end within the insulation layer 4; and a second annular end cap 13, sealing the left end of the insulation layer 4. A first insulation cotton 14 may be filled between the first annular plate 10 and the first annular end cap 11, and a second insulation cotton 15 may be filled between the second annular plate 12 and the second annular end cap 13. By providing the first annular end cap 11 and the second annular end cap 13, a seal can be formed at both ends of the insulation layer 4, improving the heating and antifreeze effect. Since the structure of the antifreeze device is relatively complex near both ends, it is not possible to arrange the semiconductor cooling chip 501. Therefore, by adding insulation cotton at both ends of the cold space 32 and the hot space 31 to extend the insulation layer 4, insulation can be formed at the positions of the pressure guiding pipeline corresponding to the two ends of the insulation layer 4.

[0043] Reference Figures 1-3In embodiments of this disclosure, the antifreeze device for the pressure-conducting pipeline may further include two first elastic support rings 16. One of the two first elastic support rings 16 may be installed on the side of the first annular end cap 11 facing away from the first annular plate 10, and the other of the two first elastic support rings 16 may be installed on the side of the second annular end cap 13 facing away from the second annular plate 12. One of the two first elastic support rings 16 may be used to elastically abut against the main pipeline of the pressure-conducting pipeline, and the other may be used to elastically abut against a transmitter. The transmitter is used to measure internal information of the main pipeline, such as pressure and purity, through the pressure-conducting pipeline. With this design, during installation, the two first elastic support rings 16 are respectively compressed and deformed to elastically abut against the corresponding first annular end cap 11 or second annular end cap 13, thereby further enhancing the sealing effect of the annular end caps on both sides of the insulation layer 4. In embodiments of this disclosure, the first elastic support rings 16 may be made of rubber material.

[0044] Reference Figure 2 and Figure 3 In embodiments of this disclosure, the antifreeze device for the pressure-conducting pipeline may further include multiple support columns 9 abutting against the inner wall of the outer sleeve 1 and the cold end of the thermoelectric cooler 501. The support columns 9 can increase the number of fixing points for the thermoelectric cooler 501, and together with the heat insulation plate 6, comprehensively improve the stability of the thermoelectric cooler 501. In this case, to install the support columns 9, in some embodiments, the outer sleeve 1 may have a pre-installed support column 9, and the outer sleeve 1 may include two semi-cylindrical portions assembled together. During installation, the two semi-cylindrical portions are joined together so that the support column 9 can abut against the thermoelectric cooler 501.

[0045] In addition to the aforementioned semiconductor refrigeration chip 501, refer to Figures 6-8 In some other embodiments, the heating element 5 may further include a heating wire or heating tube 502 installed within the insulation layer 4. The heating wire or heating tube 502 may be fixed to the outer wall of the inner sleeve 2. In this case, the outer sleeve 1 may have a wire-passing hole for the wire to pass through.

[0046] To seal both ends of insulation layer 4 and improve its antifreeze effect, refer to... Figure 6 In the embodiments of this disclosure, the antifreeze device for the pressure-conducting pipeline may further include: a third annular end cap 17, sealed to the right end of the insulation layer 4; and a fourth annular end cap 18, sealed to the left end of the insulation layer 4.

[0047] It should be noted that, in the embodiments of this disclosure, all the above-mentioned annular end caps can be sealed to both ends of the insulation layer 4 by means of bonding, welding or screwing. The specific method can be selected according to the specific situation, and this disclosure does not limit it.

[0048] Reference Figures 5-8In embodiments of this disclosure, the antifreeze device for the pressure-conducting pipeline may further include two second elastic support rings 19. One of the two second elastic support rings 19 may be installed on the side of the third annular end cap 17 facing away from the insulation layer 4, and the other of the two second elastic support rings 19 may be installed on the side of the fourth annular end cap 18 facing away from the insulation layer 4. One of the two second elastic support rings 19 is used to elastically abut against the main pipeline of the pressure-conducting pipeline, and the other is used to elastically abut against the transmitter. The transmitter is used to measure internal information of the main pipeline, such as pressure and purity, through the pressure-conducting pipeline. With this design, during installation, the two second elastic support rings 19 are respectively compressed and deformed to elastically abut against the corresponding third annular end cap 17 or fourth annular end cap 18, thereby further enhancing the sealing effect of the annular end caps on both sides of the insulation layer 4. In embodiments of this disclosure, the second elastic support rings 19 may be made of rubber material.

[0049] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0050] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0051] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. An antifreeze device for a pressure-conducting pipeline, characterized in that, include: Outer tube; as well as An inner sleeve, coaxially and spaced apart, is disposed inside the outer sleeve and is used to fit around the outer periphery of the pressure-conducting pipeline. An insulation layer is formed between the outer sleeve and the inner sleeve. Both ends of the insulation layer are sealed, and a heating element is installed within the insulation layer. The heating element includes a semiconductor cooling chip installed within the insulation layer. In this configuration, the hot end of the thermoelectric cooler faces the outer wall of the inner sleeve, and the cold end of the thermoelectric cooler faces the outer sleeve. The outer sleeve has multiple air outlets positioned corresponding to the thermoelectric cooler. The antifreeze device for the pressure-conducting pipeline also includes a heat insulation plate disposed within the insulation layer and surrounding the inner sleeve. The heat insulation plate has through holes, and the semiconductor cooling chip is embedded in the through holes. The cold and hot ends of the thermoelectric cooler face opposite sides of the heat insulation plate, respectively, to form a thermal space between the heat insulation plate and the inner sleeve, and a cold space between the heat insulation plate and the outer sleeve. The antifreeze device of the pressure guiding pipeline also includes an airflow generating component disposed at the right end of the insulation layer. The airflow generating component is used to blow outside air into the cold space so that the cold air in the cold space is discharged through the air outlet.

2. The antifreeze device for the pressure-conducting pipeline according to claim 1, characterized in that, It also includes two support strips supporting the inner sleeve and the outer sleeve, the two support strips extending along the axial direction of the inner sleeve and the outer sleeve respectively and arranged at intervals to divide the insulation layer into a first space and a second space. The heat insulation board consists of two panels, each constructed as a curved surface with a circular arc cross-section. The two heat insulation boards are respectively installed in the corresponding first space or second space via the two support strips.

3. The antifreeze device for the pressure-conducting pipeline according to claim 1, characterized in that, The airflow generating component includes: The first short tube has the same diameter as the inner sleeve and is connected to the right end of the inner sleeve; The second short tube has the same diameter as the outer tube and is connected to the right end of the outer tube; Two first annular protrusions are respectively formed on the outer wall of the first short tube near the inner sleeve, and the two first annular protrusions are spaced apart from each other and parallel. Two second annular protrusions are respectively formed on the outer wall of the second short tube near the outer sleeve, and the two second annular protrusions are spaced apart from each other and parallel; The first ring is rotatably mounted between the two first annular protrusions; The second ring is rotatably mounted between the two second annular protrusions, and the outer periphery of the second ring is provided with annular toothed grooves; Multiple inclined plates are respectively connected between the first ring and the second ring; The motor is mounted on the outer wall of the second short tube; and The transmission wheel is connected to the output shaft of the motor. The second short tube has an opening at the position corresponding to the second ring so that the transmission wheel can mesh with the annular tooth groove, and the second short tube has multiple air inlets at the position on the right side of the second ring.

4. The antifreeze device for the pressure-conducting pipeline according to claim 3, characterized in that, A baffle plate is provided at the end of the thermal space facing the airflow generating component.

5. The antifreeze device for the pressure-conducting pipeline according to claim 3, characterized in that, The first ring, the second ring, and the plurality of inclined plates are integrally formed.

6. The antifreeze device for the pressure-conducting pipeline according to claim 3, characterized in that, Also includes: The first annular plate is disposed between the first short tube and the second short tube near the right end; The first annular end cap is sealed at the right end of the first short tube and the second short tube; The second annular plate is disposed within the insulation layer near the left end; and The second annular end cap is sealed to the left end of the insulation layer. The first annular plate and the first annular end cap are filled with a first insulating cotton, and the second annular plate and the second annular end cap are filled with a second insulating cotton.

7. The antifreeze device for the pressure-conducting pipeline according to claim 6, characterized in that, It also includes two first elastic support rings, one of which is installed on the side of the first annular end cap opposite to the first annular plate, and the other of which is installed on the side of the second annular end cap opposite to the second annular plate. One of the two first elastic support rings is used to elastically abut against the main pipeline of the pressure guiding line, and the other is used to elastically abut against the transmitter, which is used to measure the internal information of the main pipeline through the pressure guiding line.

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