Temperature measuring device and fuel storage tank equipment

Abstract

The utility model provides a temperature measuring device and fuel storage tank equipment. The temperature measuring device comprises a temperature measuring joint, a temperature measuring probe and a temperature transmitter. One axial end of the temperature measuring joint is provided with an opening. And a mounting cavity communicated with the opening is formed in the temperature measuring joint. The mounting cavity comprises a first mounting space and a plurality of second mounting spaces located on the outer side of the first mounting space in the radial direction. The multiple second mounting spaces are arranged at intervals in the circumferential direction. The temperature measuring probe comprises a columnar probe body and a plurality of protrusions which are arranged on the periphery of the probe body at intervals and protrude outwards. And the temperature transmitter is electrically connected with the temperature measuring probe. Wherein the temperature measuring probe can be inserted and clamped in the mounting cavity through the opening, the probe body is located in the first mounting space, and the protrusion is clamped in the second mounting space. The temperature measuring device can avoid relative movement between the temperature measuring probe and the temperature measuring joint, and ensures that the temperature of the temperature measuring joint can be fully conducted to the temperature measuring probe, thereby obtaining accurate temperature measurement data.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel containers, in particular to a temperature measuring device and fuel storage tank equipment. Background Art

[0002] Temperature transmitter is an instrument that converts temperature variables into transmittable output signals. It is often used to measure and control temperature parameters in the industrial field. The temperature transmitter is equipped with a temperature probe. The temperature probe is in contact with the temperature measuring joint. Due to the influence of equipment movement, the temperature probe and the temperature measuring joint will move relative to each other, causing the temperature probe and the temperature measuring joint to separate or deviate, affecting the temperature of the temperature measuring joint to be transmitted to the temperature probe, thereby affecting the accuracy of the temperature measurement data. Summary of the invention

[0003] One purpose of the utility model is to solve the technical problem in the prior art that the temperature measuring probe is separated or deviated from the temperature measuring joint, which affects the temperature conduction of the temperature measuring joint to the temperature measuring probe, thereby affecting the accuracy of temperature measurement data.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A temperature measuring device, comprising:

[0006] A temperature measuring joint, one axial end of which is provided with an opening; a mounting cavity communicating with the opening is provided inside the temperature measuring joint, the mounting cavity comprises a first mounting space and a plurality of second mounting spaces radially located outside the first mounting space, the plurality of second mounting spaces being arranged at intervals along the circumferential direction;

[0007] A temperature measuring probe, comprising a columnar probe body and a plurality of protrusions arranged at intervals on the periphery of the probe body and protruding outward; and

[0008] A temperature transmitter, the temperature transmitter is electrically connected to the temperature measuring probe;

[0009] The temperature measuring probe can be inserted through the opening and clamped in the installation cavity, the probe body is located in the first installation space, and the protrusion is clamped in the second installation space.

[0010] In one embodiment, the inner side wall of the temperature measuring joint includes a plurality of first parts arranged at intervals and a second part connecting two adjacent first parts, the plurality of first parts enclose the first installation space, and the second parts form the second installation space;

[0011] The first portion and the second portion are both in an arc shape convex outward, and the curvature radius of the second portion is smaller than the curvature radius of the first portion.

[0012] In one embodiment, the profile of the protrusion along the axial direction of the temperature measuring probe is an arc convex outward.

[0013] In one embodiment, the installation cavity includes a positioning cavity and a guide cavity which are sequentially arranged and communicated with each other along the axial direction of the temperature measuring joint, the guide cavity is close to the opening, and the diameter of the guide cavity gradually expands along the direction close to the opening.

[0014] In one embodiment, the temperature measuring device includes a connecting piece, which is connected to one end of the temperature measuring joint where the opening is provided, and the temperature transmitter is arranged at the other end of the connecting piece relative to the temperature measuring joint, and the connecting piece is used to connect to an external structure to realize the installation of the temperature measuring device.

[0015] In one embodiment, the connecting member is in the shape of a hollow cylinder, and the installation cavity communicates with the interior of the connecting member to form a channel;

[0016] The temperature measuring probe is electrically connected to the temperature transmitter via a cable, and the cable is located in the channel; and / or,

[0017] The connecting piece is in a straight line shape.

[0018] In one embodiment, the end of the connecting member away from the temperature measuring joint is provided with a first threaded portion, the temperature transmitter is provided with a second threaded portion, and the first threaded portion is threadedly connected with the second threaded portion; or

[0019] A first flange is arranged at one end of the connecting member away from the temperature measuring joint, and a second flange is arranged on the temperature transmitter. The first flange and the second flange are detachably connected.

[0020] The utility model also provides another embodiment, a fuel storage tank device, comprising an inner tank, an outer tank, a cold box and the above-mentioned temperature measuring device, wherein the inner tank is used to accommodate the fuel medium, the outer tank is sleeved on the outside of the inner tank, and the cold box is arranged at one axial end of the outer tank;

[0021] The temperature transmitter is arranged in the cold box, and the temperature measuring joint part extends into the inner tank so that the temperature measuring joint part can contact the fuel medium, and the temperature measuring joint is lower than or arranged at the liquid level height of the preset filling rate of the inner tank.

[0022] In one of the embodiments, a plurality of the temperature measuring joints are arranged in the inner tank, and the plurality of the temperature measuring joints are arranged at vertical intervals. The temperature measuring probe and the temperature transmitter can be adapted to any one of the plurality of the temperature measuring joints to detect temperatures at different height positions.

[0023] In one embodiment, the inner tank includes an inner cylinder and inner heads arranged at both ends of the inner cylinder, the outer tank includes an outer cylinder and outer heads arranged at both ends of the outer cylinder, and the axes of the inner tank and the outer tank extend horizontally or vertically.

[0024] The temperature measuring joint is arranged on the inner sealing head or on the inner cylinder.

[0025] It can be seen from the above technical solution that the utility model has at least the following advantages and positive effects:

[0026] In the utility model, the temperature measuring probe can be inserted through the opening and clamped in the installation cavity, the probe body is located in the first installation space, and the protrusion is clamped in the second installation space, so that the temperature measuring joint and the temperature measuring probe can be firmly connected, avoiding relative movement between the temperature measuring probe and the temperature measuring joint, ensuring that the temperature of the temperature measuring joint can be fully transmitted to the temperature measuring probe, thereby obtaining accurate temperature measurement data. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a fuel storage tank device in an embodiment of the utility model.

[0028] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0029] Figure 3 It is a structural schematic diagram of a temperature measuring joint and a temperature measuring probe in an embodiment of the utility model.

[0030] Figure 4 It is a structural schematic diagram of the first installation space and the second installation space in an embodiment of the utility model.

[0031] Figure 5 It is a structural schematic diagram of a temperature measuring probe in an embodiment of the utility model.

[0032] The following are the descriptions of the reference numerals:

[0033] 100, inner tank; 110, inner cylinder; 120, inner head;

[0034] 200, outer tank; 210, outer cylinder; 220, outer head; 230, vacuum interlayer;

[0035] 300, cold box;

[0036] 400. Temperature measuring device;

[0037] 500, temperature measuring joint; 510, opening; 520, installation cavity; 521, first installation space; 522, second installation space; 530, first part; 540, second part; 550, positioning cavity; 560, guide cavity; 570, third part; 580, transition cavity; 590, fourth part;

[0038] 600, temperature measuring probe; 610, probe body; 620, protrusion;

[0039] 700, temperature transmitter;

[0040] 800. Connectors. DETAILED DESCRIPTION

[0041] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" 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 present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0043] The utility model provides a fuel storage tank device. The fuel storage tank device can be applied to ships. The fuel storage tank device can be a liquefied natural gas storage tank. The fuel storage tank device can adopt a vacuum horizontal container.

[0044] In one embodiment, if Figure 1 As shown, a fuel storage tank device includes an inner tank 100. The inner tank 100 is used to contain a fuel medium. The inner tank 100 can specifically contain liquefied natural gas.

[0045] Specifically, the inner tank 100 includes an inner cylinder 110 and inner seals 120 arranged at both ends of the inner cylinder 110. That is, two inner seals 120 can be provided. The two inner seals 120 are respectively arranged at both ends of the inner cylinder 110 and seal the inner cylinder 110.

[0046] More specifically, the inner cylinder 110 may be a cylindrical structure, and the inner head 120 may be a convex head. The outer surface of the inner head 120 is a convex head, such as a hemispherical surface, an elliptical shape, etc.

[0047] In one embodiment, if Figure 1 As shown, a fuel storage tank device further includes an outer tank 200. The outer tank 200 is sleeved outside the inner tank 100. There is a radial interval between the outer tank 200 and the inner tank 100 and a vacuum interlayer 230 is formed. The vacuum interlayer 230 can insulate the fuel medium in the inner tank 200 so that the fuel medium in the inner tank 200 is in a low temperature state.

[0048] Specifically, the outer tank 200 includes an outer cylinder 210 and outer heads 220 arranged at both ends of the outer cylinder 210. That is, two outer heads 220 can be provided. The two outer heads 220 are respectively arranged at both ends of the outer cylinder 210 and seal the outer cylinder 210.

[0049] More specifically, the outer cylinder 210 may be a cylindrical structure, and the outer head 220 may be a convex head. The outer surface of the outer head 220 is a convex head, such as a hemispherical surface, an elliptical shape, etc.

[0050] In one embodiment, if Figure 1 As shown, a fuel storage tank device further includes a cold box 300. The cold box 300 is disposed at one axial end of the outer tank 200. The liquid phase pipeline in the fuel storage tank device is led out from the inner tank 100 and the outer tank 200 to the cold box 300.

[0051] In one embodiment, please refer to Figure 2 A fuel storage tank device further includes a temperature measuring device 400. The temperature measuring device 400 includes a temperature measuring joint 500, a temperature measuring probe 600 and a temperature transmitter 700. The temperature measuring joint 500 is in contact with and connected to the temperature measuring probe 600. Specifically, the temperature measuring joint 500 and the temperature measuring probe 600 can be detachably connected, which is convenient for installation or removal of the temperature measuring joint 500 and the temperature measuring probe 600.

[0052] Specifically, the temperature measuring probe 600 is electrically connected to the temperature transmitter 700 .

[0053] It should be noted that the temperature transmitter 700 is installed on the liquid phase pipeline in the cold box 300. The temperature of the fuel medium inside the fuel storage tank is measured by the cooperation of the temperature measuring joint 500, the temperature measuring probe 600 and the temperature transmitter 700. That is, the temperature transmitter 700 is set in the cold box 300.

[0054] In other embodiments, the temperature measuring joint 500 is disposed through the inner tank 100. Specifically, the temperature measuring joint 500 and the inner tank 100 are welded as one.

[0055] Specifically, the temperature measuring joint 500 partially extends into the inner tank 100 so that the temperature measuring joint 500 can partially contact the fuel medium. The temperature measuring joint 500 can be a blind joint. The blind side of the temperature measuring joint 500 contacts the fuel medium. When the temperature measuring joint 500 contacts the fuel medium, the temperature of the fuel medium is fully transferred to the temperature measuring joint 500, so that the temperature difference between the fuel medium and the temperature measuring joint 500 is extremely small. That is, the temperature of the fuel medium is almost equal to the temperature of the temperature measuring joint 500.

[0056] It should be noted that when the portion of the temperature measuring joint 500 extending into the inner tank 100 is too small, the portion of the temperature measuring joint 500 in contact with the fuel medium is small, resulting in insufficient temperature conduction of the fuel medium, which will increase the temperature difference between the fuel medium and the temperature measuring joint 500 and affect the accuracy of the fuel medium temperature measurement. When the portion of the temperature measuring joint 500 extending into the inner tank 100 is too large, although it can ensure that the temperature of the fuel medium is fully conducted to the temperature measuring joint 500, it is not convenient to weld the temperature measuring joint 500 to the inner tank 100.

[0057] In this embodiment, the portion of the temperature measuring joint 500 extending into the inner tank 100 is 1 / 3 to 1 / 2 of the axial length of the entire temperature measuring joint 500. This arrangement ensures that the temperature of the fuel medium is fully transferred to the temperature measuring joint 500, and does not affect the welding of the temperature measuring joint 500 to the inner tank 100.

[0058] Specifically, the temperature measuring joint 500 is lower than or set at the liquid level height of the preset filling rate of the inner tank 100 .

[0059] In the related art, the liquid phase pipeline is arranged in a sleeve. The sleeve is arranged at the bottom of the fuel storage tank. This structure can only generally measure the temperature of the fuel medium inside the fuel storage tank, and cannot accurately measure the temperature of the fuel medium at a specific liquid level of the fuel storage tank. However, the temperature of different liquid levels of the fuel storage tank is not the same. For example, the temperature difference between the top and bottom fuel cutoffs of a large-volume vertical storage tank is very large. That is, this structure cannot accurately measure the temperature of the fuel medium at the required liquid level of the fuel storage tank.

[0060] In this embodiment, when it is necessary to measure the temperature of the fuel medium at a preset liquid level in the fuel storage tank, the temperature measuring joint 500 is disposed through the inner tank 100. For example, if it is necessary to measure the temperature of the fuel medium at 56% of the liquid level in the fuel storage tank, the temperature measuring joint 500 is disposed through the position of 56% of the liquid level height of the inner tank 100. The temperature measuring joint 500 partially extends into the accommodating cavity and contacts the fuel medium in the inner tank 100, so that the temperature of the fuel medium at this liquid level is fully transferred to the temperature measuring joint 500, and thus the temperature of the fuel medium at this liquid level is almost equal to the temperature of the temperature measuring joint 500.

[0061] The temperature probe 600 is in contact with and connected to the temperature measuring joint 500. The low temperature of the fuel medium in the inner tank 100 is transferred to the temperature measuring joint 500, the temperature measuring joint 500 is cooled, and the temperature measuring probe 600 detects the temperature of the temperature measuring joint 500.

[0062] It should be noted that the temperature probe 600 and the temperature transmitter 700 can be detachably mounted on the inner tank 100 through the temperature measuring joint 500. The temperature probe 600 does not need to be in direct contact with the fuel medium, nor does it need to be welded to the inner tank 100, which facilitates the replacement of the temperature probe 600 and the temperature transmitter 700.

[0063] In this embodiment, a plurality of temperature measuring joints 500 are arranged in the inner tank 100. The plurality of temperature measuring joints 500 are arranged at intervals in the vertical direction. The temperature measuring probe 600 and the temperature transmitter 700 can be matched with any one of the plurality of temperature measuring joints 500 to detect the temperature at different height positions.

[0064] It is understandable that a plurality of temperature measuring joints 500 are arranged on the side walls of the inner tank 100 at different heights to correspond to different liquid levels of the inner tank 100. For example, three temperature measuring joints 500 can be arranged. The three temperature measuring joints 500 are respectively arranged at the liquid levels of 40%, 60% and 80% of the inner tank 100. When it is necessary to measure the liquid level of 40%, the temperature measuring probe 600 is connected to the temperature measuring joint 500 of 40%. The temperature transmitter 700 measures the temperature value of the 40% liquid level. When it is necessary to measure the liquid level of 60%, the temperature transmitter 700 and the temperature measuring probe 600 are disassembled from the temperature measuring joint 500 of the 40% liquid level, and then the temperature measuring probe 600 is contacted and connected with the temperature measuring joint 500 of the 60% liquid level, and the temperature transmitter 700 measures the temperature value of the 60% liquid level.

[0065] In one embodiment, the axis of the inner tank 100 extends horizontally. That is, if the fuel storage tank is a horizontal storage tank, the temperature measuring joint 500 can be arranged on the inner sealing head 120. Figure 1 and Figure 2 Taking the perspective of as an example, the temperature measuring joint 500 is horizontally penetrated through the side wall of the inner head 120.

[0066] Specifically, the axis of the inner tank 100 extends vertically. That is, when the fuel storage tank is a vertical storage tank, the temperature measuring joint 500 can be arranged on the inner cylinder 110. The temperature measuring joint 500 is arranged through the side wall of the inner head 120 in the horizontal direction.

[0067] In one embodiment, please refer to Figure 3 An opening 510 is provided at one axial end of the temperature measuring joint 500. The opening 510 is used for the temperature measuring probe 600 to enter the interior of the temperature measuring joint 500. Specifically, the opening 510 may be a circular opening.

[0068] Specifically, a mounting cavity 520 communicating with the opening 510 is provided inside the temperature measuring joint 500 . The temperature measuring probe 600 can enter the mounting cavity 520 through the opening 510 , so that the temperature measuring probe 600 is stuck in the temperature measuring joint 500 .

[0069] In one embodiment, please refer to Figure 4 The installation cavity 520 includes a first installation space 521 and a plurality of second installation spaces 522 radially located outside the first installation space 521. The first installation space 521 may be a circular cavity. The plurality of second installation spaces 522 are arranged at intervals along the circumferential direction. Specifically, the plurality of second installation spaces 522 may be arranged at equal intervals along the circumferential direction.

[0070] Specifically, the inner side wall of the temperature measuring joint 500 includes a plurality of first parts 530 arranged at intervals and a second part 540 connecting two adjacent first parts 530. The plurality of first parts 530 enclose a first installation space 521. The second part 540 forms a second installation space 522. More specifically, the plurality of first parts 530 have the same shape and size. The plurality of second parts 540 have the same shape and size. More specifically, the first part 530 and the second part 540 can be set to four.

[0071] Specifically, the first portion 530 and the second portion 540 are both in an arc shape that is convex outwards, and the curvature radius of the second portion 540 is smaller than the curvature radius of the first portion 530 .

[0072] In one embodiment, please refer to Figure 3 The installation cavity 520 includes a positioning cavity 550 and a guide cavity 560 which are sequentially arranged and communicated along the axial direction of the temperature measuring joint 500. The first installation space 521 and the second installation space 522 are located in the positioning cavity 550. Specifically, the first installation space 521 and the second installation space 522 are located in the middle position of the positioning cavity 550 along the axial direction.

[0073] Specifically, the guide cavity 560 is closer to the opening 510 than the positioning cavity 550. It is understandable that after the temperature measuring probe 600 enters the opening 510, it is guided by the guide cavity 560 and is clamped in the positioning cavity 550.

[0074] Specifically, the caliber of the guide cavity 560 gradually expands in the direction approaching the opening 510. The maximum caliber of the guide cavity 560 is equal to the caliber of the opening 510. When the temperature measuring probe 600 just enters the guide cavity 560, the caliber of the guide cavity 560 is relatively large, which facilitates the temperature measuring probe 600 to enter the guide cavity 560. As the temperature measuring probe 600 moves toward the direction approaching the positioning cavity 550, the caliber of the guide cavity 560 becomes smaller and smaller, thereby guiding the temperature measuring probe 600 to enter the positioning cavity 550.

[0075] In one embodiment, the inner side wall of the temperature measuring joint 500 further includes a third portion 570. The third portion 570 encloses and forms the guide cavity 560. The third portion 570 may be trumpet-shaped. The third portion 570 is tilted from the direction from the opening 510 to the positioning cavity 550.

[0076] In other embodiments, the installation cavity 520 may further include a transition cavity 580. The transition cavity 580 is located between the guide cavity 560 and the opening 510. It can be understood that the transition cavity 580 connects the guide cavity 560 and the opening 510. The caliber of the transition cavity 580 is equal to the caliber of the opening 510. The temperature probe 600 passes through the opening 510, the transition cavity 580, the guide cavity 560 and the positioning cavity 550 in sequence.

[0077] Specifically, the inner side wall of the temperature measuring joint 500 further includes a fourth portion 590. The fourth portion 590 encloses and forms a transition cavity 580. The fourth portion 590 may be a straight cylinder structure.

[0078] In one embodiment, please refer to Figure 5 The temperature measuring probe 600 includes a columnar probe body 610 and a plurality of protrusions 620 that are spaced and arranged at intervals on the outer periphery of the probe body 610 and protrude outward. The radial dimension of the probe body 610 is adapted to the first installation space 521, so that the probe body 610 can fit in the first installation space 521. The protrusions 620 are adapted to the second installation space 522. The plurality of protrusions 620 fit in the second installation space 522 in a one-to-one correspondence.

[0079] Specifically, the profile of the protrusion 620 along the axial direction of the temperature measuring probe 600 is in the shape of an arc with a convex surface facing outwards. The curvature radius of the protrusion 620 is equal to the curvature radius of the second portion 540 .

[0080] During operation, the temperature measuring probe 600 can be inserted through the opening 510 and clamped in the installation cavity 520, the probe body 610 is located in the first installation space 521, and the protrusion 620 is clamped in the second installation space 522, so that the temperature measuring joint 500 and the temperature measuring probe 600 can be firmly connected, avoiding relative movement between the temperature measuring probe 600 and the temperature measuring joint 500, ensuring that the temperature of the temperature measuring joint 500 can be fully transmitted to the temperature measuring probe 600, thereby obtaining accurate temperature measurement data.

[0081] In one embodiment, please refer to Figure 2 The temperature measuring device 400 includes a connector 800. The connector 800 is in the shape of a hollow cylinder. The connector 800 is connected to one end of the temperature measuring joint 500 having an opening 510. The connector 800 is specifically welded to one end of the temperature measuring joint 500 having an opening 510. The temperature transmitter 700 is disposed at the other end of the connector 800 relative to the temperature measuring joint 500. The connector 800 is used to connect to an external structure to realize the installation of the temperature measuring device 400.

[0082] Specifically, the temperature transmitter 700 and the connecting member 800 are detachably connected, which facilitates the installation or removal of the temperature transmitter 700 and the connecting member 800.

[0083] Specifically, the connector 800 may be a sleeve. A first threaded portion is provided at one end of the connector 800 away from the temperature measuring joint 500. The first threaded portion may be an internal thread structure provided on the temperature measuring joint 500. The temperature transmitter 700 is provided with a second threaded portion. The second threaded portion may be an external thread structure provided on the temperature transmitter 700. The first threaded portion is threadedly connected to the second threaded portion.

[0084] Specifically, a first flange is provided at one end of the connector 800 away from the temperature measuring joint 500. The temperature transmitter 700 is provided with a second flange. The first flange and the second flange are detachably connected. Specifically, the first flange and the second flange can be connected by bolts or screws. The cross section of the sleeve is circular. Threaded connection or flange connection is more suitable for the connection of the sleeve.

[0085] In one embodiment, the installation cavity 520 communicates with the interior of the connector 800 and forms a channel. The temperature probe 600 and the temperature transmitter 700 are electrically connected via a cable, and the cable is located in the channel. The channel is isolated from the vacuum interlayer 230. The cable of the inner tank 100 can be led out of the outer tank 200 through the channel.

[0086] In one embodiment, the axis of the outer tank 200 extends horizontally. That is, if the fuel tank is a horizontal storage tank, the connector 800 can be disposed on the outer head 220. Figure 1 and Figure 2 Taking the perspective of as an example, the connecting piece 800 is horizontally penetrated through the side wall of the outer head 220.

[0087] Specifically, the axis of the outer tank 200 extends vertically. That is, when the fuel storage tank is a vertical storage tank, the connector 800 can be disposed on the outer cylinder 210. The connector 800 is disposed through the side wall of the outer cylinder 210 in the horizontal direction.

[0088] More specifically, the connector 800 is in a straight line, which facilitates the temperature measuring probe 600 to enter the installation cavity 520 of the temperature measuring joint 500 from the inside of the connector 800 .

[0089] Although the utility model has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the utility model can be implemented in various forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.

Claims

1. A temperature measuring device, characterized in that: include: A temperature measuring joint, one axial end of which is provided with an opening; a mounting cavity communicating with the opening is provided inside the temperature measuring joint, the mounting cavity comprises a first mounting space and a plurality of second mounting spaces radially located outside the first mounting space, the plurality of second mounting spaces being arranged at intervals along the circumferential direction; The temperature measuring probe comprises a columnar probe body and a plurality of protrusions which are arranged at intervals on the periphery of the probe body and protrude outward; and A temperature transmitter, the temperature transmitter is electrically connected to the temperature measuring probe; The temperature measuring probe can be inserted through the opening and clamped in the installation cavity, the probe body is located in the first installation space, and the protrusion is clamped in the second installation space.

2. The temperature measuring device according to claim 1, characterized in that: The inner side wall of the temperature measuring joint includes a plurality of first parts arranged at intervals and a second part connecting two adjacent first parts, the plurality of first parts enclose the first installation space, and the second parts form the second installation space; The first portion and the second portion are both in an arc shape convex outward, and the curvature radius of the second portion is smaller than the curvature radius of the first portion.

3. The temperature measuring device according to claim 1, characterized in that: The profile of the protrusion along the axial direction of the temperature measuring probe is in the shape of an arc convex outward.

4. The temperature measuring device according to claim 1, characterized in that: The installation cavity comprises a positioning cavity and a guide cavity which are sequentially arranged and communicated with each other along the axial direction of the temperature measuring joint. The guide cavity is close to the opening, and the diameter of the guide cavity gradually expands along the direction close to the opening.

5. The temperature measuring device according to claim 1, characterized in that: The temperature measuring device includes a connecting piece, which is connected to one end of the temperature measuring joint where the opening is provided. The temperature transmitter is arranged at the other end of the connecting piece relative to the temperature measuring joint. The connecting piece is used to connect with an external structure to realize the installation of the temperature measuring device.

6. The temperature measuring device according to claim 5, characterized in that: The connecting piece is in the shape of a hollow cylinder, and the installation cavity communicates with the interior of the connecting piece to form a passage; The temperature measuring probe is electrically connected to the temperature transmitter via a cable, and the cable is located in the channel; and / or, The connecting piece is in a straight line shape.

7. The temperature measuring device according to claim 5, characterized in that: The end of the connecting member away from the temperature measuring joint is provided with a first threaded portion, the temperature transmitter is provided with a second threaded portion, and the first threaded portion is threadedly connected with the second threaded portion; or A first flange is arranged at one end of the connecting member away from the temperature measuring joint, and a second flange is arranged on the temperature transmitter. The first flange and the second flange are detachably connected.

8. A fuel storage tank device, characterized in that: It comprises an inner tank, an outer tank, a cold box and the temperature measuring device according to any one of claims 1 to 7, wherein the inner tank is used to contain a fuel medium, the outer tank is sleeved on the outside of the inner tank, and the cold box is arranged at one axial end of the outer tank; The temperature transmitter is arranged in the cold box, and the temperature measuring joint part extends into the inner tank so that the temperature measuring joint part can contact the fuel medium, and the temperature measuring joint is lower than or arranged at the liquid level height of the preset filling rate of the inner tank.

9. The fuel storage tank equipment according to claim 8, characterized in that: A plurality of the temperature measuring joints are arranged in the inner tank, and the plurality of the temperature measuring joints are arranged at intervals along the vertical direction. The temperature measuring probe and the temperature transmitter can be adapted to any one of the plurality of the temperature measuring joints to detect the temperature at different height positions.

10. The fuel storage tank equipment according to claim 8, characterized in that: The inner tank comprises an inner cylinder and inner heads arranged at two ends of the inner cylinder, and the outer tank comprises an outer cylinder and outer heads arranged at two ends of the outer cylinder. The axes of the inner tank and the outer tank extend horizontally or vertically. The temperature measuring joint is arranged on the inner sealing head or on the inner cylinder.

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