Device for measuring shutdown heat loss of heat preservation gas pipeline in cold region

Abstract

The utility model relates to a cold region thermal insulation gas pipeline shutdown heat loss measuring device, which comprises a controller and at least one thermal insulation measuring unit, each thermal insulation measuring unit comprises a thermal insulation sleeve, a heat conduction water tank, an electric heater and a temperature sensor, an annular cavity is arranged in the thermal insulation sleeve, and the thermal insulation sleeve is provided with a mounting hole communicated with the annular cavity; the electric heater is mounted at the mounting hole, and one end of the electric heater extends into the heat conduction water tank; the temperature sensor is mounted at the mounting hole, and the temperature sensor and the electric heater are in communication connection with the controller. The gas pipeline heating device has the advantages of being compact in structure, reasonable in design, convenient to preserve heat of the gas pipeline in cold regions, capable of automatically conducting auxiliary heating when the temperature is low, and capable of improving the using effect.

Description

Technical Field

[0001] The utility model relates to the technical field of heat loss measurement of gas pipelines, in particular to a heat loss measurement device for a heat-insulated gas pipeline in cold areas. Background Art

[0002] Due to the bad climate conditions in cold regions, the lowest temperature is -41.5℃, the extreme lowest temperature is -43.6℃, ​​and the average temperature in the coldest month is -25℃, so insulation must be installed for this section of pipeline. Compared with oil products, natural gas has a smaller heat capacity and dissipates heat quickly to the outside environment. If the gas pipeline in cold regions is not insulated, the following problems will occur: ① After the pipeline stops, the temperature of the pipe wall will quickly drop to the low temperature of the outside environment, resulting in a large temperature drop loss; ② Under the condition of small transmission volume in the initial stage of production, due to the low gas flow rate, the natural gas will fully dissipate heat to the outside environment, which will cause a large temperature drop loss and increase the operating cost; therefore, it is necessary to add insulation devices to prevent excessive temperature drop in the gas pipeline.

[0003] The existing heat loss measurement of insulated gas pipelines in cold regions and the heat loss measurement during shutdown use pipeline insulation sleeves for insulation, and the temperature sensor or thermometer is installed on the outside of the gas pipeline for measurement. The personnel use the measured temperature and the initial temperature of the pipeline end to calculate the temperature difference to obtain the heat loss value; however, there are the following shortcomings in use: 1. It can only simply measure the temperature for personnel to calculate the temperature difference, and cannot automatically perform auxiliary heating work in cold regions with low temperatures, and the use effect is single; 2. The risk of temperature detection parts being exposed to the outside and damaged or contaminated is high, making it difficult to use safely and stably while ensuring convenient maintenance. In view of this, we propose a heat loss measurement device for insulated gas pipelines in cold regions to solve the above problems. Utility Model Content

[0004] The utility model provides a device for measuring heat loss of a heat-insulated gas pipeline in cold regions when the gas pipeline is shut down, aiming to solve the problems in the prior art.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A device for measuring heat loss during shutdown of an insulated gas transmission pipeline in cold regions comprises a controller and at least one insulated measurement unit, each of the insulated measurement units comprises an insulated sleeve, a heat conducting water tank, an electric heater and a temperature sensor, an annular cavity is provided in the insulated sleeve, and a mounting hole communicating with the annular cavity is provided on the insulated sleeve; the heat conducting water tank is fixedly installed in the annular cavity, the electric heater is installed at the mounting hole, and one end of the electric heater extends into the heat conducting water tank; the temperature sensor is installed at the mounting hole, and the temperature sensor and the electric heater are respectively connected to the controller for communication.

[0007] The beneficial effects of the utility model are as follows: during use, in cold areas, the heat preservation sleeve is used on the outside to insulate the gas pipeline, so as to reduce the rate of direct heat loss to the outside. The on-off temperature value of the electric heater is pre-set by the controller according to the use requirements. The temperature sensor detects the temperature of the gas pipeline in real time and transmits the corresponding temperature value to the controller. When the temperature value is lower than the preset value, the controller controls the electric heater to turn on, and sends the corresponding model to the background terminal temperature value, so as to facilitate the terminal personnel to understand the temperature, thereby facilitating the terminal personnel to calculate the heat loss by comparing the initial terminal temperature.

[0008] Among them, when the electric heater is turned on, it heats the water in the heat transfer water tank, and the heat transfer water tank transfers the heat to the gas pipeline for heating. As the gas pipeline heats up, when the temperature value reaches the preset shutdown value, the controller controls the electric heater to shut down, thereby achieving the effect of automatic auxiliary heating when the temperature is low in cold areas, thereby improving the use effect.

[0009] The utility model has a compact structure and a reasonable design, is convenient for heat preservation of gas transmission pipelines in cold areas, and automatically performs auxiliary heating when the temperature is low, thereby improving the use effect.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, each of the heat preservation measurement units also includes a protective cover, which is installed at the installation hole; the electric heater, the temperature sensor and the controller are respectively located in the protective cover.

[0012] The beneficial effects of adopting the above further scheme are simple structure, reasonable setting of the protective cover, and using the protective cover to safely protect the corresponding components, reducing the risk of damage or contamination thereof and improving safety of use.

[0013] Furthermore, it also includes an alarm light, which is installed on the controller and is communicatively connected with the controller.

[0014] The beneficial effect of adopting the above further scheme is that when the temperature of the gas pipeline is lower than the set temperature threshold or the temperature of the gas pipeline after heating reaches the set threshold, the controller sends an alarm instruction to the alarm light, and the alarm light sounds an alarm to serve as a warning.

[0015] Furthermore, the protective cover includes a cover body and a cover, the cover body is fixedly installed at the installation hole, and its upper end is open, and the cover is detachably installed on the upper end of the cover body; the electric heater, the temperature sensor and the controller are respectively located in the cover body.

[0016] The beneficial effect of adopting the above further solution is that the structure of the protective cover is reasonably set, which facilitates subsequent maintenance work.

[0017] Furthermore, the cover is threadedly connected to the upper end of the cover body.

[0018] The beneficial effect of adopting the above further solution is that the structure is simple, and the cover and the cover body are detachably connected, which is convenient for subsequent maintenance operations.

[0019] Furthermore, a lifting plate is horizontally installed in the cover body, and the lifting plate can be moved up and down and positioned; the controller and the temperature sensor are respectively installed on the lifting plate, and the detection end of the temperature sensor extends to the bottom of the lifting plate.

[0020] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and the lifting plate is movably installed in the cover body, which is convenient for assembling various components and facilitating subsequent maintenance of various components.

[0021] Furthermore, a support rod is horizontally installed in the cover body, and the support rod is located above the lifting plate, and the middle part of the support rod is rotatably connected to the center of the cover through a bearing; a pair of T-shaped rods are vertically and fixedly installed on both sides of the lifting plate, and the upper ends of the pair of T-shaped rods respectively pass through the two ends of the support rod and are respectively connected to the two ends of the support rod in an up and down sliding manner.

[0022] The beneficial effect of adopting the above further solution is that during maintenance, the cover can drive the support rod to move upward through the bearing during rotation, and then the support rod drives the two T-shaped rods to pull the lifting plate upward to facilitate maintenance work.

[0023] Furthermore, the upper ends of the pair of T-shaped rods are respectively sleeved with tension springs, and the two ends of the two tension springs are respectively abutted against the upper ends of the pair of T-shaped rods and the two ends of the support rod.

[0024] The beneficial effect of adopting the above further solution is that the lifting plate is elastically tightened downward by using the tension spring through the corresponding T-shaped rod, and the structure is simple and the design is reasonable.

[0025] Furthermore, each of the thermal insulation measurement units also includes a battery, which is fixedly mounted on the thermal insulation sleeve; the electric heater and the temperature sensor are respectively connected to the battery through lines.

[0026] The beneficial effect of adopting the above further solution is that during use, the battery is used to supply power to each component, thereby ensuring the normal operation of the entire device.

[0027] Furthermore, each of the thermal insulation measurement units also includes a solar panel and an inverter. The solar panel is fixedly installed on the thermal insulation cover at an angle; the inverter is fixedly installed on the thermal insulation cover and is connected to the solar panel and the battery through lines respectively.

[0028] The beneficial effect of adopting the above further solution is that during use, solar energy is converted into electrical energy using solar panels, and direct current is converted into alternating current using inverters and stored in batteries for power supply work, thus saving resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0030] Figure 2 It is an internal cross-sectional view of the utility model;

[0031] Figure 3 for Figure 2 A is an enlarged view of the middle image.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 100. Gas pipeline; 1. Insulation sleeve; 2. Solar panel; 3. Battery; 4. Heat conduction water tank; 5. Cover; 6. Electric heater; 7. Lifting plate; 8. Temperature sensor; 9. Controller; 10. Signal transmitter; 11. Warning light; 12. T-bar; 13. Support rod; 14. Tension spring; 15. Cover; 16. Round shaft. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0035] In the description of the present utility model, it should be understood 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 present utility model 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 utility model. In addition, the terms "first", "second", etc. 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, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0037] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0038] Example 1

[0039] like Figures 1 to 3 As shown, this embodiment provides a heat loss measurement device for a heat-insulated gas pipeline in cold areas when it is shut down, including a controller 9 and at least one heat-insulating measurement unit, each of which includes a heat-insulating sleeve 1, a heat-conducting water tank 4, an electric heater 6 and a temperature sensor 8. An annular cavity is provided in the heat-insulating sleeve 1, and a mounting hole communicating with the annular cavity is provided on the heat-insulating sleeve 1; the heat-conducting water tank 4 is fixedly installed in the annular cavity, and the electric heater 6 is installed at the mounting hole, and one end of the electric heater 6 extends into the heat-conducting water tank 4; the temperature sensor 8 is installed at the mounting hole, and the temperature sensor 8 and the electric heater 6 are respectively connected to the controller 9 for communication.

[0040] Based on the above solution, the controller 9 is communicatively connected with a signal transmitter 10, and the signal transmitter 10 is wirelessly communicatively connected with the control center.

[0041] During use, in cold areas, the heat preservation sleeve 1 is used to insulate the gas pipeline 100 on the outside to reduce the rate of direct heat loss to the outside. The controller 9 is used to pre-set the on-off temperature value of the electric heater 6 according to the use requirements. The temperature sensor 8 detects the temperature of the gas pipeline 100 in real time and transmits the corresponding temperature value to the controller 9. When the temperature value is lower than the preset value, the controller 9 controls the electric heater 6 to turn on, and sends the corresponding model to the background terminal temperature value, which makes it convenient for terminal personnel to understand the temperature, so as to facilitate the terminal personnel to calculate the heat loss by comparing the initial end temperature;

[0042] Among them, when the electric heater 6 is turned on, it heats the water in the heat conduction water tank 4, and the heat conduction water tank 4 transfers the heat to the gas pipeline 100 for heating. As the gas pipeline 100 heats up, when the temperature value reaches the preset closing value, the controller 9 controls the electric heater 6 to turn off, thereby achieving the effect of automatic auxiliary heating when the temperature is low in cold areas, thereby improving the use effect.

[0043] Preferably, in this embodiment, a pressure relief valve is fixedly connected to the left side of the top of the heat conduction water tank 4, and the top of the pressure relief valve extends to the top of the insulation sleeve 1. The pressure relief valve is provided to relieve pressure when the water in the annular heat conduction water tank 4 is heated and generates high pressure.

[0044] Preferably, in this embodiment, the thermal insulation sleeve 1 is preferably an annular structure, which is tightly wrapped around the gas pipeline 100 .

[0045] Preferably, in this embodiment, when the gas pipeline 100 is long, multiple devices provided in this embodiment can be arranged in sequence and side by side on the outside of the gas pipeline 100, so that the device is in multiple separate units, and multiple devices are used on the gas pipeline 100 to perform auxiliary heating and detection work to achieve better application effects.

[0046] Based on the above solution, the above installation hole is located at the end of the thermal insulation sleeve 1 , and the electric heater 6 is located at the end of the thermal insulation sleeve 1 .

[0047] It should be noted that the temperature sensor 8, the electric heater 6 and the controller 9 respectively adopt the existing technology, and their specific structures and principles are not described in detail here.

[0048] In addition, the controller 9 adopts a PLC controller in the prior art.

[0049] This embodiment has a compact structure and a reasonable design, is convenient for heat preservation of gas pipelines in cold regions, and automatically performs auxiliary heating when the temperature is low, thereby improving the use effect.

[0050] Example 2

[0051] On the basis of Example 1, in this embodiment, each of the thermal insulation measurement units further includes a protective cover, which is installed at the mounting hole; the electric heater 6, the temperature sensor 8 and the controller 9 are respectively located in the protective cover.

[0052] The solution has a simple structure and a reasonable setting of the protective cover. The protective cover is used to safely protect the corresponding components, reduce the risk of damage or contamination, and improve safety in use.

[0053] Example 3

[0054] On the basis of Embodiment 2, this embodiment further includes an alarm light 11 , which is installed on the controller 9 and is in communication connection with the controller 9 .

[0055] When the temperature of the gas pipeline 100 is lower than the set temperature threshold or the temperature of the gas pipeline 100 after heating reaches the set threshold, the controller 9 sends an alarm instruction to the alarm light 11, and the alarm light 11 sounds an alarm to serve as a warning.

[0056] It should be noted that the above-mentioned warning light 11 adopts the existing technology, and its specific structure and principle are not described in detail here.

[0057] Example 4

[0058] On the basis of any one of Examples 2 to 3, in this embodiment, the protective cover includes a cover body 5 and a cover 15, the cover body 5 is fixedly installed at the mounting hole, and its upper end is open, and the cover 15 is detachably installed on the upper end of the cover body 5; the electric heater 6, the temperature sensor 8 and the controller 9 are respectively located in the cover body 5.

[0059] The structure of the protective cover is reasonably set to facilitate subsequent maintenance work.

[0060] Preferably, in this embodiment, a U-shaped handle is fixedly mounted on the cover 15 for easy operation.

[0061] Based on the above solution, the cover body 5 is a cylindrical structure, and the cover 15 is preferably a circular cover, the mounting hole is preferably a circular hole, and the outer wall of the cover body 5 fits with the hole wall of the mounting hole.

[0062] In addition, the cover body 5 and the lid 15 are preferably made of transparent materials to facilitate viewing of the internal conditions.

[0063] Example 5

[0064] On the basis of Embodiment 4, in this embodiment, the cover 15 is threadedly connected to the upper end of the cover body 5 .

[0065] This solution has a simple structure, and the cover 15 and the cover body 5 are detachably connected, which is convenient for subsequent maintenance operations.

[0066] Example 6

[0067] On the basis of any one of Examples 4 to 5, in this embodiment, a lifting plate 7 is horizontally installed in the cover body 5, and the mounting plate can be moved up and down and positioned; the controller 9 and the temperature sensor 8 are respectively installed on the lifting plate 7, and the detection end of the temperature sensor 8 extends to the bottom of the lifting plate 7.

[0068] This solution has a simple structure and a reasonable design. The lifting plate 7 is movably installed in the cover body 5, which is convenient for assembling various components and for subsequent maintenance of various components.

[0069] Preferably, in this embodiment, the lifting plate 7 is preferably a circular plate.

[0070] Example 7

[0071] On the basis of Example 6, in this embodiment, a support rod 13 is further horizontally installed in the cover body 5, and the support rod 13 is located above the lifting plate 7, and the middle part is rotatably connected to the center of the cover 15 through a bearing; a pair of T-shaped rods 12 are vertically and relatively fixedly installed on both sides of the lifting plate 7, and the upper ends of the pair of T-shaped rods 12 respectively pass through the two ends of the support rod 13, and are respectively connected to the two ends of the support rod 13 in an up and down sliding manner.

[0072] Based on the above solution, the bearing is installed at the center of the lower surface of the cover 15 , which is fixedly connected to the upper end of the vertically arranged circular shaft 16 , and the lower end of the circular shaft 16 is fixedly connected to the center of the support rod 13 .

[0073] This solution has a simple structure and a reasonable design. The lifting plate 7 is movably installed in the cover body 5, which is convenient for assembling various components and for subsequent maintenance of various components.

[0074] Example 8

[0075] On the basis of Example 7, in this embodiment, the upper ends of the pair of T-shaped rods 12 are respectively sleeved with tension springs 14, and the two ends of the two tension springs 14 are respectively abutted against the upper ends of the pair of T-shaped rods 12 and the two ends of the support rod 13.

[0076] This solution utilizes the tension spring 14 to elastically tighten the lifting plate 7 downward through the corresponding T-shaped rod 12, and has a simple structure and reasonable design.

[0077] Based on the above scheme, when the cover 15 drives the support rod 13 to lift the lowering plate 7, the two tension springs 14 are in a compressed state. After the cover 15 is covered on the cover body 5, the two tension springs 14 naturally stretch downward to elastically tighten the lifting plate 7. The elastic tensioning and pressing shielding assembly is used to elastically tighten the lifting plate 7 vertically, so as to drive the temperature sensor 8 to always be close to the gas pipeline 100 for stable detection.

[0078] Example 9

[0079] On the basis of the above embodiments, in this embodiment, each of the thermal insulation measurement units further includes a battery 3, and the battery 3 is fixedly mounted on the thermal insulation sleeve 1; the electric heater 6 and the temperature sensor 8 are respectively connected to the battery 3 through lines.

[0080] During use, the battery 3 supplies power to each component to ensure the normal operation of the entire device.

[0081] It should be noted that the above-mentioned storage battery 3 adopts the existing technology, and its specific structure and principle are not described in detail here.

[0082] Example 10

[0083] On the basis of Example 9, in this embodiment, each of the thermal insulation measurement units also includes a solar panel 2 and an inverter, and the solar panel 2 is tilted and fixedly installed on the thermal insulation cover 1; the inverter is fixedly installed on the thermal insulation cover 1, and is connected to the solar panel 2 and the battery 3 through lines respectively.

[0084] During use, the solar panel 2 is used to convert solar energy into electrical energy, and the inverter is used to convert direct current into alternating current and store it in the battery 3 to perform power supply work and save resources.

[0085] Preferably, in this embodiment, the solar panel 2 is fixedly mounted on the thermal insulation sleeve 1 via a bracket.

[0086] In addition, the storage battery 3 is preferably disposed below the solar panel 2 .

[0087] It should be noted that the above-mentioned solar panel 2 and inverter respectively adopt existing technologies, and their specific structures and principles are not described in detail here.

[0088] The method of using the utility model is as follows:

[0089] In cold regions, the heat preservation sleeve 1 is used to insulate the gas pipeline 100 on the outside to reduce the rate of direct heat loss to the outside. The controller 9 is used to pre-set the on / off temperature value of the electric heater 6 and the alarm light 11 according to the use requirements. The temperature sensor 8 detects the temperature of the gas pipeline 100 in real time and transmits the temperature value to the PLC controller 9. When the temperature value is lower than the preset value, the controller 9 controls the alarm light 11 and the electric heater 6 to turn on, and sends the temperature value to the background terminal through the signal transmitter 10, which plays an alarm reminder and facilitates the terminal personnel to understand the temperature, so as to facilitate the terminal personnel to calculate the heat loss by comparing the initial end temperature. The heat loss calculation formula is as follows:

[0090] Q = πD × (T1-T2) × L × K;

[0091] Where: D is the pipe diameter; T1 is the measured temperature; T2 is the initial temperature of the pipe end; L is the pipe length; K is the heat loss coefficient.

[0092] It should be noted that during the measurement process, the above formula is entered into the controller in advance, and the controller subsequently directly uses the obtained data to automatically perform calculations.

[0093] When the electric heater 6 is turned on, the water in the heat transfer water tank 4 is heated, and the heat transfer water tank 4 transfers the heat to the gas pipeline 100 for heating. As the temperature of the gas pipeline 100 rises, when the temperature value reaches the preset closing value, the controller 9 controls the electric heater 6 and the alarm light 11 to turn off, so as to achieve the effect of automatic auxiliary heating when the temperature is low in cold areas, thereby improving the use effect;

[0094] The solar panel 2 is used to convert solar energy into electrical energy and store it in the battery 3, and the inverter is used to convert direct current into alternating current to power the alarm light 11, the electric heater 6 and the controller 9. By using the solar power supply and storage method, the effect of energy-saving power supply without wiring is achieved, which is convenient to use;

[0095] When in use, the transparent cover 15 and the cover body 5 can be used to safely surround and protect the detection parts such as the controller 9, the temperature sensor 8 and the alarm light 11, thereby reducing the risk of damage or contamination and improving the safety of use;

[0096] When the detection part needs to be removed for maintenance, the personnel directly rotate the U-shaped handle in the opposite direction to drive the cover 15 to rotate in the opposite direction at the top of the circular shaft 16. Under the action of the threaded sleeve connection between the cover 15 and the cover body 5, the cover 15 rotates in the opposite direction and separates upward from the cover body 5. At this time, the cover 15 is moved upward to drive the support rod 13 upward through the circular shaft 16. The support rod 13 releases the tensile force on the two tension springs 14 upward. After the tensile force is released, the support rod 13 that continues to move upward drives the lifting plate 7 to move upward through the corresponding tension spring 14 and the T-shaped rod 12 in turn. The lifting plate 7 drives the controller 9 and the temperature sensor 8 to move upward, so that it is easy to remove the shielding and remove the detection part by a simple rotation, which is convenient for the personnel's subsequent maintenance work;

[0097] When installing after maintenance, the cover 15 is moved down to drive the detection part to move downward into the cover body 5 until the temperature sensor 8 moves down to contact the top of the gas pipeline 100 and is blocked and restricted by it. The cover 15 is rotated forward to be screwed to the cover body 5. During the screwing process, the downward-moving cover 15 drives the support rod 13 to move downward through the circular shaft 16. The support rod 13 slides downward on the two T-shaped rods 12 and stretches the two tension springs 14. The tension springs 14 are used to elastically tighten the lifting plate 7 downward through the corresponding T-shaped rods 12. The lifting plate 7 drives the temperature sensor 8 to always be in close contact with the gas pipeline 100 for stable detection. The detection part is removed by simply rotating to remove the obstruction. The rotating shielding and elastic tightening method can ensure safe and stable use while ensuring convenient maintenance, which is convenient for personnel to perform subsequent maintenance work.

[0098] Compared with the prior art, the beneficial effects of the utility model are:

[0099] 1. This device for measuring heat loss when stopping gas pipeline in cold areas can insulate gas pipeline in cold areas by cooperating with the set insulation sleeve, PLC controller, electric heater, annular heat conduction water tank, signal transmitter, alarm light and temperature sensor. After the PLC controller is used to pre-set the on / off temperature value of the electric heater and the alarm light, it can automatically perform auxiliary heating when the temperature is low, thereby improving the use effect.

[0100] 2. This device for measuring heat loss during shutdown of insulated gas pipelines in cold regions can be easily rotated to remove the shielding and remove the detection parts through the cooperation of the elastic pressure shielding components and the lifting plate, and can be rotated to shield and elastically tightened, which can ensure convenient maintenance and safe and stable use, and facilitate the subsequent maintenance work of personnel;

[0101] 3. This device for measuring heat loss during shutdown of insulated gas pipelines in cold regions can utilize solar energy to store electricity when in use, by means of a solar energy storage component, thus achieving energy-saving power supply without wiring and being easy to use.

[0102] The utility model is provided with a series of structures, which is convenient for heat preservation of gas transmission pipelines in cold areas, and automatically performs auxiliary heating when the temperature is low, thereby improving the use effect. It can be unsealed, removed and covered and tightened by simple rotation, thereby ensuring safe and stable use while facilitating maintenance of detection parts, facilitating subsequent maintenance work by personnel, and saving energy and power supply when in use, making it easy to use.

[0103] It should be noted that all electronic components involved in the present invention adopt the existing technology, and the above-mentioned components are electrically connected to the controller, and the control circuit between the controller and each component is the existing technology.

[0104] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0105] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0106] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for measuring heat loss of a gas pipeline in cold regions when it is shut down, characterized in that: The invention comprises a controller (9) and at least one heat preservation measuring unit, each of the heat preservation measuring units comprises a heat preservation sleeve (1), a heat conduction water tank (4), an electric heater (6) and a temperature sensor (8); an annular cavity is provided in the heat preservation sleeve (1), and a mounting hole communicating with the annular cavity is provided on the heat preservation sleeve (1); the heat conduction water tank (4) is fixedly installed in the annular cavity, the electric heater (6) is installed at the mounting hole, and one end of the electric heater (6) extends into the heat conduction water tank (4); the temperature sensor (8) is installed at the mounting hole, and the temperature sensor (8) and the electric heater (6) are respectively connected to the controller (9) for communication.

2. The device for measuring heat loss of gas pipelines in cold regions when they are shut down according to claim 1 is characterized in that: Each of the heat preservation measurement units further comprises a protective cover, which is mounted at the mounting hole; the electric heater (6), the temperature sensor (8) and the controller (9) are respectively located in the protective cover.

3. The device for measuring heat loss of gas pipelines in cold regions when they are shut down according to claim 2 is characterized in that: It also includes an alarm light (11), which is installed on the controller (9) and is communicatively connected to the controller (9).

4. The device for measuring heat loss of gas pipelines in cold regions when they are shut down according to claim 2 is characterized in that: The protective cover comprises a cover body (5) and a cover (15); the cover body (5) is fixedly mounted at the mounting hole, with its upper end open; the cover (15) is detachably mounted on the upper end of the cover body (5); the electric heater (6), the temperature sensor (8) and the controller (9) are respectively located in the cover body (5).

5. The device for measuring heat loss of gas pipelines in cold regions when they are shut down according to claim 4 is characterized in that: The cover (15) is threadably connected to the upper end of the cover body (5).

6. The device for measuring heat loss of a gas pipeline in cold regions when it is shut down according to claim 4 is characterized in that: A lifting plate (7) is horizontally installed in the cover body (5), and the lifting plate can be moved up and down and positioned; the controller (9) and the temperature sensor (8) are respectively installed on the lifting plate (7), and the detection end of the temperature sensor (8) extends to the bottom of the lifting plate (7).

7. The device for measuring heat loss of a gas pipeline in cold regions when it is shut down according to claim 6 is characterized in that: A support rod (13) is also horizontally installed in the cover body (5). The support rod (13) is located above the lifting plate (7), and the middle part of the support rod is rotatably connected to the center of the cover (15) through a bearing; a pair of T-shaped rods (12) are vertically fixedly installed on both sides of the lifting plate (7), and the upper ends of the pair of T-shaped rods (12) respectively penetrate the two ends of the support rod (13) and are respectively connected to the two ends of the support rod (13) in an upward and downward sliding manner.

8. The device for measuring heat loss of a gas pipeline in cold regions when it is shut down according to claim 7 is characterized in that: The upper ends of the pair of T-shaped rods (12) are respectively sleeved with tension springs (14), and the two ends of the two tension springs (14) are respectively in contact with the upper ends of the pair of T-shaped rods (12) and the two ends of the support rod (13).

9. The device for measuring heat loss of a gas pipeline in cold regions when it is shut down according to any one of claims 1 to 8, characterized in that: Each of the heat preservation measurement units further comprises a storage battery (3), wherein the storage battery (3) is fixedly mounted on the heat preservation sleeve (1); the electric heater (6) and the temperature sensor (8) are respectively connected to the storage battery (3) via lines.

10. The device for measuring heat loss of a gas pipeline in cold regions when it is shut down according to claim 9, characterized in that: Each of the thermal insulation measurement units further comprises a solar panel (2) and an inverter, wherein the solar panel (2) is fixedly mounted on the thermal insulation sleeve (1) at an angle; the inverter is fixedly mounted on the thermal insulation sleeve (1) and is connected to the solar panel (2) and the storage battery (3) via lines, respectively.

Images