Insertion temperature measuring device for cold and heat storage

Abstract

The embodiment of the present invention provides an insertion-type temperature measuring device for a cold and heat storage device. The insertion-type temperature measuring device comprises: a sleeve assembly, comprising a sleeve partially extending into a packed bed tank of the cold and heat storage device; a temperature measuring assembly, comprising a temperature measuring element located in the sleeve and extending from the sleeve into the packed bed tank; and a sleeve assembly, connecting the sleeve assembly and the temperature measuring assembly to the cold box wall of the cold and heat storage device. In this way, the sleeve outside the temperature measuring element can protect the temperature measuring element and will not affect the normal temperature measuring function of the temperature measuring element. As a result, the temperature measuring element will not be hit and damaged when filling a solid phase cold storage medium. In addition, when the cold and heat storage device is operated at high / low temperatures, the temperature measuring element will not be bent or twisted due to the difference in thermal expansion and contraction between the packed bed tank and the cold box wall. Moreover, when the temperature measuring element is damaged, it can be pulled out for replacement and repair.

Description

Technical Field

[0001] The invention relates to the field of energy storage and cold / heat storage equipment, and in particular to an insertion type temperature measuring device for a cold / heat storage device. Background Art

[0002] Liquid air energy storage is an emerging large-scale, long-term, high-density energy storage technology with outstanding advantages such as clean and low-carbon, safe, long life and not restricted by geographical conditions. It has good application prospects.

[0003] The heat storage / cooler is the core component of the liquid air energy storage system. The heat storage / cooling efficiency greatly affects the cycle efficiency of the energy storage system. The packed bed heat storage / cooler using solid phase cold storage medium has attracted extensive attention from scholars from various countries due to its high heat storage / cooling efficiency, high heat storage / cooling density and low production cost. One of the important ways to monitor the performance of the heat storage / cooler is to measure the inclined temperature layer (axial temperature gradient) formed inside it. Accurate temperature measurement devices and methods are crucial.

[0004] Traditional packed bed heat storage / cooler is usually placed in a cold box, and the temperature measurement device is usually built-in or inserted. The built-in method embeds a platinum resistance temperature probe at the internal temperature measurement point of the packed bed, and the thermometer lead is led out of the tank through the aviation plug on the tank wall. This temperature measuring device is difficult to replace and repair when the temperature probe is damaged or the lead is broken. The inserted method inserts the armored platinum resistance thermometer uniformly and laterally along the axis of the packed bed to the center of the packed bed, and the thermometer is fixed on the wall of the cold box. On the one hand, this method will cause the thermometer rod to bend and damage the probe when filling the solid phase cold storage medium. On the other hand, when the heat storage / cooler is running at high / low temperature, due to the huge difference between the temperature of the packed bed tank and the temperature of the cold box wall, the difference in thermal expansion and contraction between the two will cause the thermometer rod to bend and twist, which will also cause damage to the internal probe. Summary of the invention

[0005] In view of the defects existing in the prior art, an embodiment of the present invention provides an insertion temperature measuring device for a cold-heat storage device, which can at least be used to solve the problem in the prior art that the temperature measuring element is easily damaged when filling the solid-phase cold storage medium.

[0006] According to an embodiment of the present invention, an insertion temperature measuring device for a cold-heat accumulator is provided, comprising: a sleeve assembly, comprising a sleeve partially extending into a packed bed tank of the cold-heat accumulator; a temperature measuring assembly, comprising a temperature measuring element located in the sleeve and extending from the sleeve into the packed bed tank; and a sleeve assembly, connecting the sleeve assembly and the temperature measuring assembly to the cold box wall of the cold-heat accumulator.

[0007] According to an embodiment of the present invention, the sleeve includes a first end and a second end opposite to each other, and the temperature measuring element includes a sensing end and a lead end opposite to each other, wherein the first end and the sensing end are located in the packed bed tank, and the sensing end is exposed from the first end, and the second end and the lead end are cantilevered out of the outside of the packed bed tank.

[0008] According to an embodiment of the present invention, the sleeve assembly also includes a first connecting flange arranged at the second end, and the temperature measuring assembly also includes a second connecting flange arranged at the lead end, wherein the first connecting flange is connected to the second connecting flange so that the sleeve assembly and the temperature measuring assembly are relatively connected together.

[0009] According to an embodiment of the present invention, the temperature measuring element is an armored platinum resistance thermometer or a thermocouple.

[0010] According to an embodiment of the present invention, a first distance between the second end of the sleeve, the lead end of the temperature measuring element, the first connecting flange and the second connecting flange and the packed bed tank is greater than a second distance from the cold box wall.

[0011] According to an embodiment of the present invention, the sleeve assembly includes a sleeve connected to the wall of the cold box, wherein the second end of the sleeve, the lead end of the temperature measuring element, the first connecting flange and the second connecting flange are accommodated in the sleeve and separated from the inner wall of the sleeve.

[0012] According to an embodiment of the present invention, the sleeve includes a first end and a second end opposite to each other, wherein the second end of the sleeve, the lead end of the temperature measuring element, the first connecting flange and the second connecting flange are received in the first end, and the second end is exposed to the cold box wall and connected to the cold box wall.

[0013] According to an embodiment of the present invention, the sleeve assembly further comprises a third connecting flange arranged at the second end of the sleeve, wherein the third connecting flange is mounted on the outer surface of the cold box wall to connect the sleeve to the cold box wall.

[0014] According to an embodiment of the present invention, the third connecting flange is welded on the outer surface of the cold box wall, or is installed on the outer surface of the cold box wall by fasteners.

[0015] According to an embodiment of the present invention, the sleeve assembly also includes a fourth connecting flange, wherein the fourth connecting flange covers the third connecting flange and is connected to the third connecting flange, and the fourth connecting flange is provided with an aviation plug for leading the lead wires on the lead end of the temperature measuring element to the outside of the cold box wall.

[0016] In the insertion temperature measuring device for cold and heat storage provided by the embodiment of the present invention, the temperature measuring element of the temperature measuring assembly can be arranged in the sleeve of the sleeve assembly, and can be extended from the sleeve into the packed bed tank for temperature measurement operation, and the sleeve assembly can firmly connect the sleeve assembly and the temperature measuring assembly to the cold box wall of the cold and heat storage. In this way, the sleeve outside the temperature measuring element can protect the temperature measuring element and will not affect the normal temperature measurement function of the temperature measuring element. As a result, the temperature measuring element will not be hit and damaged when filling a solid phase cold storage medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 The figure is a schematic structural diagram of an embodiment of an insertion-type temperature measuring device for a cold-heat storage device provided by the present invention.

[0019] Reference numerals:

[0020] 100: Insertion temperature measuring device; 102: Sleeve; 104: Temperature measuring element; 106: First end; 108: Second end; 110: Sensing end; 112: Lead end; 114: First connecting flange; 116: Second connecting flange; 118: Sleeve; 120: First end; 122: Second end; 124: Third connecting flange; 126: Fourth connecting flange; 128: Aviation plug; 200: Packed bed tank; 300: Cold box wall. DETAILED DESCRIPTION

[0021] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0024] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0026] See now Figure 1, an embodiment of the insertion type temperature measuring device for cold and heat storage provided by the present invention is described. It should be understood that the following description is only an illustrative embodiment of the present invention and does not constitute any particular limitation to the present invention.

[0027] like Figure 1 As shown, an embodiment of the present invention provides an insertion type temperature measurement device 100 for a cold and heat storage device. The insertion type temperature measurement device 100 generally includes a sleeve assembly, a temperature measurement assembly and a sleeve assembly.

[0028] Specifically, if Figure 1 As shown, the sleeve assembly may include a sleeve 102, which may partially extend into the packed bed tank 200 of the cold and heat storage device. The temperature measuring assembly may include a temperature measuring element 104, which is located in the sleeve 102, and the temperature measuring element 104 can extend from the sleeve 102 into the packed bed tank 200. In other words, the sleeve 102 is sleeved on the outside of the temperature measuring element 104, and the temperature measuring element 104 can be exposed from, for example, one of the ends of the sleeve 102, and the exposed end of the temperature measuring element 104 can be located in the packed bed tank 200 for temperature measurement. In addition, the sleeve assembly can connect the sleeve assembly and the temperature measuring assembly to the cold box wall 300 of the cold and heat storage device, thereby firmly holding the sleeve assembly and the temperature measuring assembly in place.

[0029] It can be clearly seen from the above-described embodiments that, through the above-described arrangement, the sleeve 102 outside the temperature measuring element 104 can protect the main body of the temperature measuring element 104. At the same time, since the temperature measuring element 104 can be exposed from one end of the sleeve 102 for temperature measurement in the packed bed tank 200, the normal temperature measurement function of the temperature measuring element 104 will not be affected. As a result, the temperature measuring element 104 will not be hit and damaged when filling a solid phase cold storage medium. In addition, through the above arrangement, the temperature measuring element 104 can be pulled out for replacement and repair when it is damaged.

[0030] In various embodiments of the present invention, the temperature measuring element 104 may be, for example, a sheathed platinum resistance thermometer. In other embodiments, the temperature measuring element 104 may also be, for example, a thermocouple. Of course, it should be understood that the above is only an exemplary embodiment of the present invention and does not constitute any special limitation on the present invention. The selection of the temperature measuring element 104 is not limited to the above-mentioned situation, but can be selected according to specific needs.

[0031] Continue to see Figure 1 In one embodiment of the present invention, the sleeve 102 may include a first end 106 and a second end 108 opposite to each other; correspondingly, the temperature measuring element 104 may include a sensing end 110 and a lead end 112 opposite to each other.

[0032] Specifically, the first end 106 of the sleeve 102 and the sensing end 110 of the temperature measuring element 104 can be disposed in the packed bed tank 200, and the sensing end 110 of the temperature measuring element 104 can be exposed from the first end 106 of the sleeve 102, thereby enabling the function of temperature measurement to be achieved through the sensing end 110 of the temperature measuring element 104. In contrast, the second end 108 of the sleeve 102 and the lead end 112 of the temperature measuring element 104 can be cantilevered out of the packed bed tank 200. The data sensed by the sensing end 110 can be transmitted to the outside through the lead end 112, thereby performing temperature monitoring and control, which will be described below.

[0033] In actual use, for example, the main body of the sleeve 102 can be welded to the wall of the packed bed tank 200. One end of the sleeve 102 (i.e., the first end 106) can be inserted into the interior of the packed bed tank 200. In this process, the depth of insertion into the packed bed tank 200 can be set arbitrarily as needed, so that the temperature at different radii can be measured by the sensing end 110 of the temperature measuring element 104. The other end of the sleeve 102 (i.e., the second end 108) can be cantilevered out of the packed bed tank 200 and located inside the cold box near the cold box wall 300, so that it can move freely in a small range when the packed bed tank 200 expands and contracts. As a result, when the cold / heat storage device is operating at high / low temperatures, the temperature measuring element 104 will not be bent or twisted due to the difference in thermal expansion and contraction between the packed bed tank 200 and the cold box wall 300.

[0034] See also Figure 1 In one embodiment of the present invention, the sleeve assembly may further include a first connection flange 114 disposed at the second end 108 of the sleeve 102. Correspondingly, the temperature measuring assembly may further include a second connection flange 116 disposed at the lead end 112 of the temperature measuring element 104. Specifically, the first connection flange 114 may be connected to the second connection flange 116, so that the sleeve assembly can be relatively connected to the temperature measuring assembly.

[0035] In the actual assembly process, for example, the first connecting flange 114 can be connected to the second connecting flange 116 by bolts to fix the temperature measuring element 104. Of course, it should be understood that the connection method between the first connecting flange 114 and the second connecting flange 116 is only exemplary, and the present invention is not limited to the above-mentioned connection method. Other appropriate connection structures can also be applied in the embodiments of the present invention.

[0036] Furthermore, if Figure 1As shown, in this embodiment, the first distance between the second end 108 of the sleeve 102, the lead end 112 of the temperature measuring element 104, the first connecting flange 114 of the sleeve assembly, and the second connecting flange 116 of the temperature measuring assembly and the outer wall of the packed bed tank 200 can be greater than the second distance from the cold box wall 300. In this way, the second end 108 of the sleeve 102, the lead end 112 of the temperature measuring element 104, the first connecting flange 114 of the sleeve assembly, and the second connecting flange 116 of the temperature measuring assembly are closer to the cold box wall 300, and relatively far away from the packed bed tank 200, thereby forming a Figure 1 The cantilevered structural configuration is shown.

[0037] Continue to see Figure 1 In an embodiment of the present invention, the sleeve assembly may include a sleeve 118 connected to the cold box wall 300. In a specific configuration, for example, the second end 108 of the sleeve 102, the lead end 112 of the temperature measuring element 104, the first connecting flange 114 of the sleeve assembly, and the second connecting flange 116 of the temperature measuring assembly may be accommodated in the sleeve 118 and may be separated from the inner side wall of the sleeve 118, that is, separated from the inner wall surface of the sleeve 118 by a certain distance.

[0038] In other words, in actual application, one end of the sleeve 118 is welded with a cold box wall welding flange (i.e., the third connecting flange to be described below); the other end extends into the interior of the cold box and covers the first connecting flange 114 of the sleeve assembly and the second connecting flange 116 of the temperature measuring assembly. Specifically, the inner diameter of the main body of the sleeve 118 can be slightly larger than the outer diameters of the first connecting flange 114 and the second connecting flange 116. In this way, on the one hand, the free movement of the cantilevered parts of the first connecting flange 114 and the second connecting flange 116 can be guaranteed; on the other hand, the pearlescent sand can be blocked, which facilitates the replacement and maintenance of the temperature measuring element 104.

[0039] More specifically, if Figure 1 As shown, in an embodiment of the present invention, the sleeve 118 may include a first end 120 and a second end 122 that are opposite to each other. Figure 1 As shown in FIG. 1 , the second end 108 of the sleeve 102, the lead end 112 of the temperature measuring element 104, the first connecting flange 114 of the sleeve assembly and the second connecting flange 116 of the temperature measuring assembly can be received in the first end 120, so that the above parts are protected by the first end 120. In contrast, the second end 122 of the sleeve 118 can be exposed outside the cold box wall 300 and connected to the cold box wall 300, so as to form a Figure 1 The structure shown.

[0040] In the actual installation process, if Figure 1As shown, the third connection flange 124 as described above may be provided at the second end 122 of the sleeve 118. Specifically, the third connection flange 124 may be installed on the outer surface of the cold box wall 300 so that the sleeve 118 can be connected to the cold box wall 300.

[0041] In an embodiment of the present invention, the third connection flange 124 can be welded to the outer surface of the cold box wall 300. In other embodiments, the third connection flange 124 can be installed on the outer surface of the cold box wall 300 by fasteners. For example, the installation of the third connection flange 124 can be achieved by fasteners such as bolts. Of course, it should be understood that the above-mentioned connection method of the third connection flange 124 is only exemplary, and the present invention is not limited to the above-mentioned connection method. Other appropriate connection structures can also be applied in the embodiments of the present invention.

[0042] Continue to see Figure 1 In an embodiment of the present invention, the sleeve assembly may further include a fourth connection flange 126. Specifically, in an embodiment of the present invention, the fourth connection flange 126 may cover the third connection flange 124 and be connected to the third connection flange 124.

[0043] In actual application, an aviation plug 128 may be provided on the fourth connection flange 126. The aviation plug 128 may be used to lead the lead wire on the lead end 112 of the temperature measuring element 104 to the outside of the cold box wall 300, so as to connect with an external monitoring and control device for temperature monitoring and control.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An insertion temperature measuring device for a cold and heat storage device, characterized in that: include: A sleeve assembly, comprising a sleeve partially extending into the packed bed tank of the cold and heat storage device, the sleeve comprising a first end and a second end opposite to each other, the first end being located in the packed bed tank, the second end extending out of the packed bed tank, and the end of the sleeve being connected to a first connecting flange; A temperature measuring assembly, comprising a temperature measuring element located in the sleeve and extending from the sleeve to the packed bed tank, the temperature measuring element comprising a sensing end and a lead end opposite to each other, the sensing end being located in the packed bed tank and exposed from the first end; the lead end extending out of the packed bed tank, and a second connecting flange being provided at the position where the lead end is located, the second connecting flange being connected to the first connecting flange; A sleeve assembly connects the sleeve assembly and the temperature measuring assembly to the cold box wall of the cold and heat storage device; the sleeve assembly includes a sleeve connected to the cold box wall; The second end of the sleeve, the lead end of the temperature measuring element, the first connecting flange and the second connecting flange are accommodated in the sleeve and separated from the inner wall of the sleeve so that they can move freely in a small range when the packed bed tank expands and contracts.

2. The insertion temperature measuring device for cold and heat storage device according to claim 1, characterized in that: The sleeve assembly and the temperature measuring assembly are relatively connected together.

3. The insertion temperature measuring device for cold and heat storage device according to any one of claims 1 to 2, characterized in that: The temperature measuring element is an armored platinum resistance thermometer or a thermocouple.

4. The insertion temperature measuring device for cold and heat storage device according to claim 1, characterized in that: A first distance between the second end of the sleeve, the lead end of the temperature measuring element, the first connecting flange, and the second connecting flange and the packed bed tank is greater than a second distance from the cold box wall.

5. The insertion temperature measuring device for cold and heat storage device according to claim 1, characterized in that: The sleeve includes a first end and a second end opposite to each other, The second end of the sleeve, the lead end of the temperature measuring element, the first connecting flange and the second connecting flange are received in the first end, and the second end is exposed to and connected to the cold box wall.

6. The insertion temperature measuring device for cold and heat storage device according to claim 5, characterized in that: The sleeve assembly further includes a third connecting flange disposed at the second end of the sleeve, Wherein, the third connecting flange is installed on the outer surface of the cold box wall so that the sleeve is connected to the cold box wall.

7. The insertion temperature measuring device for cold and heat storage device according to claim 6, characterized in that: The third connecting flange is welded on the outer surface of the cold box wall, or is installed on the outer surface of the cold box wall through fasteners.

8. The insertion temperature measuring device for cold and heat storage device according to claim 6 or 7, characterized in that: The sleeve assembly also includes a fourth connecting flange; The fourth connecting flange covers the third connecting flange and is connected to the third connecting flange, and the fourth connecting flange is provided with an aviation plug for leading the lead wires on the lead end of the temperature measuring element to the outside of the cold box wall.

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