CN217560749U - Auxiliary detection device - Google Patents
Auxiliary detection device Download PDFInfo
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- CN217560749U CN217560749U CN202220837606.0U CN202220837606U CN217560749U CN 217560749 U CN217560749 U CN 217560749U CN 202220837606 U CN202220837606 U CN 202220837606U CN 217560749 U CN217560749 U CN 217560749U
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- oil tank
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- heat conducting
- rod
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Abstract
The utility model provides an auxiliary detection device. The auxiliary detection device comprises a plurality of heat conducting rods distributed on the side wall of the oil tank from top to bottom, and the heat conducting rods penetrate through the heat insulation layer to be connected with the oil tank body. Because the oil tank with the heat preservation layer can not directly observe the position of the internal layered interface in the oil tank through infrared imaging, the auxiliary detection device is provided with a plurality of heat conduction rods from top to bottom, the temperature of the inner wall of the tank body is effectively guided out of the oil tank while the heat preservation function of the heat preservation layer is not influenced, the temperature of the heat conduction rods corresponds to the temperature of the inner wall of the oil tank at the position of the heat conduction rods, and the temperature characteristic difference of the inner wall of the oil tank can be obtained by utilizing the temperature characteristic difference of the heat conduction rods, so that the subsequent internal layered detection is facilitated.
Description
Technical Field
The utility model relates to an oil tank detects technical field, concretely relates to supplementary detection device.
Background
In the petrochemical industry, crude oil is stored in an oil tank, and after the crude oil in the oil tank is stabilized, the conditions of oil and water stratification, gas and oil stratification and the like can occur. The density of water is greater than oil, so gas is in the upper strata, and oil is in the middle level, and water is below oil, and the measurement personnel are the depth of oil-water interface most concerned, the position of oil-water stratification promptly, because can accurately know the water content of the crude oil of adopting through this data, this is to understanding underground oil reservoir water content, formulating crude oil production plan etc. and is of great significance.
In the current oil tank internal layered detection method, one is to install various testing instruments inside the oil tank to measure the internal layered interface position, for example, to install static pressure type level gauge, float type level gauge and float type level gauge in the oil tank to detect the oil-water layered interface position, these level gauges often have the problems of low precision and complex operation, difficult calibration and poor safety, and need to manually maintain the instruments; the other type is based on the principle that the temperature characteristics of an oil layer, a water layer and a gas layer are obviously different due to different specific heat capacities of the oil layer, the water layer and the gas layer, and the infrared image of the oil tank is shot through the outside.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving the technical problem who exists among the prior art at least, provide a convenient, accurate inside layering auxiliary detection device to the oil tank that has the heat preservation very much.
The utility model provides an auxiliary detection device is applied to the outside oil tank that is equipped with the heat preservation, including a plurality of top-down distribute in the heat conduction stick of oil tank lateral wall, the heat conduction stick passes heat preservation and oil tank body coupling.
The technical scheme is as follows: because the oil tank that has the heat preservation can't directly observe the interior layering interface position in the oil tank through infrared imaging, this supplementary detection device sets up a plurality of heat conduction stick through top-down, when not influencing the heat preservation function of heat preservation, derive the temperature of jar internal wall outside the oil tank effectively, the temperature of heat conduction stick corresponds with the temperature of the oil tank inner wall of its position, the temperature characteristic difference that utilizes a plurality of heat conduction stick just can obtain the oil tank inner wall, and then carry out interior layering interface and detect, preferably but not limited to obtains the temperature characteristic difference of a plurality of heat conduction stick through the infrared image that utilizes the shooting oil tank.
In a preferred embodiment of the present invention, the plurality of heat conducting rods are distributed along an axis of the oil tank.
The technical scheme is as follows: the distance between the heat conducting rods is consistent with the height difference between the heat conducting rods, the calculated amount of obtaining the internal layered interface position is reduced, and the measurement error is reduced.
In a preferred embodiment of the present invention, a ratio of a maximum length of the heat conducting rod in the tank axial direction to a tank height is 0.025 to 0.033.
The technical scheme is as follows: the pixel area of the heat conducting rod can be effectively distinguished on an infrared image when the heat conducting rod is subjected to infrared imaging on the tank bodies with various sizes.
In a preferred embodiment of the present invention, a ratio of a maximum length of the heat conduction rod in the circumferential direction of the oil tank to a diameter of the oil tank is 0.032 to 0.042.
The technical scheme is as follows: further ensure that the heat conduction stick can effectively distinguish the pixel area of the heat conduction stick on the infrared image when the infrared imaging is carried out on the tank bodies with various sizes.
In a preferred embodiment of the present invention, the ratio of the center distance between two adjacent heat conducting rods to the height of the oil tank is 0.066 to 0.1.
The technical scheme is as follows: the heat conduction between the heat conducting rods can be effectively reduced or avoided on the oil tanks with various sizes, and the detection accuracy of the internal layering position of the subsequent oil tank is improved.
In a preferred embodiment of the present invention, the diameter of the heat conducting rod is 30mm to 1000mm.
The technical scheme is as follows: the pixel area of the heat conducting rod can be conveniently identified in subsequent infrared imaging, and the measurement accuracy is improved.
In a preferred embodiment of the present invention, the center distance between two adjacent heat conducting rods is greater than or equal to twice the diameter of the heat conducting rod.
The technical scheme is as follows: effectively reduce or avoid carrying out heat conduction between the heat conduction stick, improve follow-up oil tank inside layering position and detect the accuracy.
In a preferred embodiment of the present invention, the heat conducting rod is a carbon structural steel rod, a brass rod or an aluminum alloy rod.
The technical scheme is as follows: the heat conducting rods made of the materials have high heat conductivity, the temperature of the inner wall of the tank body at the position can be effectively led out to the outside, and the materials are easy to obtain, so that the acquisition cost can be reduced.
In a preferred embodiment of the present invention, the length of the heat conducting rod is 3mm to 6mm greater than the thickness of the heat insulating layer.
The technical scheme is as follows: the imaging area of the heat conducting rod can be observed in an infrared image conveniently through infrared imaging subsequently, and the detection precision of the position of an internal part layer is improved.
In a preferred embodiment of the present invention, a heat conducting rod thermal insulation material is disposed around the heat conducting rod.
The technical scheme is as follows: the speed of heat outward diffusion of the heat conducting rod can be reduced, the temperature of the inner wall of the tank body at the corresponding position can be effectively conducted, and the detection precision of the inner layered position is further improved.
In a preferred embodiment of the present invention, at least two position marks are disposed on the outer surface of the heat insulation layer.
The technical scheme is as follows: through the position mark, in the infrared image, the height of the inner part layer from the tank bottom can be obtained according to the detected relative position of the inner part layer and the position mark, and calculation is facilitated.
Drawings
Fig. 1 is a schematic structural diagram of an auxiliary detection device in embodiment 1 of the present invention;
fig. 2 is an infrared image of an oil tank in which an auxiliary detection device is installed in embodiment 1 of the present invention.
Reference numerals:
1, an oil tank; 2, heat conducting rods; 3 position marking.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected" and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection through an intermediate medium, and those skilled in the art may understand the specific meanings of the above terms according to specific situations.
Example 1
The embodiment discloses an auxiliary detection device, is applied to the outside and is equipped with oil tank 1 of heat preservation, as shown in fig. 1, includes that a plurality of top-down distribute in the heat conduction stick 2 of 1 lateral wall of oil tank, heat conduction stick 2 passes heat preservation and 1 jar body coupling of oil tank. Preferably, mounting holes corresponding to the positions of the heat conducting rods 2 one by one are formed in the heat insulating layer in advance, and the heat conducting rods 2 are directly inserted into the corresponding mounting holes to be connected with the tank body of the oil tank 1. The heat conducting rod 2 is connected with the tank body of the oil tank 1 by means of welding or bonding. Further preferably, in order to make the heat conducting rod 2 and the tank wall tightly fit, and increase high temperature resistance and heat conductivity, the bottom of the heat conducting rod 2 and the tank body of the oil tank 1 are bonded by casting glue, and the casting glue is preferably, but not limited to, kafter casting glue ab glue. The plurality of heat conducting rods 2 can be distributed on the side wall of the oil tank 1 from top to bottom in a spiral or zigzag manner or along the axis of the side wall of the oil tank 1.
In the present embodiment, the cross-sectional shape of the heat conduction rod 2 is preferably, but not limited to, a circle or an ellipse, or a polygon or an irregular shape, the polygon may be a triangle, a quadrangle, a pentagon, a hexagon, etc., and the irregular shape may be a semicircle, a V, a heart, etc.
In the present embodiment, it is further preferable that a plurality of the heat conductive rods 2 are distributed along one axis of the oil tank 1, as shown in fig. 1.
In the present embodiment, it is further preferable that the ratio of the maximum length of the heat conductive rods 2 in the axial direction of the oil tank 1 to the height of the oil tank 1 is 0.025 to 0.033. The maximum length of the heat conducting rod 2 in the axial direction of the oil tank 1 is the projection length of the heat conducting rod 2 in the axial direction of the oil tank 1, when the cross section of the heat conducting rod 2 is circular, the maximum length of the heat conducting rod 2 in the axial direction of the oil tank 1 is the diameter of the heat conducting rod 2, and the ratio of the diameter to the height of the oil tank 1 ranges from 0.025 to 0.033. When the cross-sectional shape of the heat conduction rod 2 is a rectangle, and the length of the rectangle is the same as the axial direction of the oil tank 1, the maximum length of the heat conduction rod 2 in the axial direction of the oil tank 1 is the length of the rectangle, and the ratio of the length to the height of the oil tank 1 is in the range of 0.025 to 0.033.
In the present embodiment, it is further preferable that the ratio of the maximum length of the heat conductive rod 2 in the circumferential direction of the oil tank 1 to the diameter of the oil tank 1 is 0.032 to 0.042. The maximum length of the heat conducting rod 2 in the circumferential direction of the oil tank 1 is the projection length of the heat conducting rod 2 in the circumferential direction of the oil tank 1, when the cross-sectional shape of the heat conducting rod 2 is a circle, the maximum length of the heat conducting rod 2 in the circumferential direction of the oil tank 1 is the diameter of the heat conducting rod 2, and the ratio of the diameter to the height of the oil tank 1 ranges from 0.025 to 0.033. When the cross-sectional shape of the heat conduction rod 2 is a rectangle, and the length of the rectangle is the same as the axial direction of the oil tank 1, the maximum length of the heat conduction rod 2 in the circumferential direction of the oil tank 1 is the width of the rectangle, and the ratio of the width to the diameter of the oil tank 1 is 0.032 to 0.042.
In the present embodiment, it is further preferable that the ratio of the center-to-center distance between two adjacent heat conduction rods 1 to the height of the oil tank 1 is 0.066 to 0.1. In the present embodiment, it is further preferable that the diameter of the heat conduction rod 2 is 30mm to 1000mm. Specifically, the diameter of the heat conduction rod 2 is related to whether the pixel area of the heat conduction rod 2 can be effectively identified in the infrared imaging image, for example, when the infrared imaging is performed at a distance of 16 meters from the oil tank 1, the diameter of the heat conduction rod 2 can be set to 800mm, so that the pixel area of the heat conduction rod 2 can be effectively identified from the infrared image. When the oil tank 1 is small in size, for example, 1167mm in diameter and 1500mm in height, the diameter of the heat conduction rod 2 may be set to 38mm to 50mm. Of course, the diameter of the heat conducting rod 2 may be set to 500mm, 600mm, 1000mm, or the like, depending on the size of the oil tank 1.
In this embodiment, it is further preferable that, in order to prevent crosstalk generated by heat conduction of adjacent heat conduction rods 2 and affect the accuracy of detection of the layered interface position, the center-to-center distance between two adjacent heat conduction rods 2 is greater than or equal to two diameters of the heat conduction rods 2, and specifically, the center-to-center distance between two adjacent heat conduction rods 2 can be achieved by controlling the center-to-center distance between two adjacent mounting holes, for example, when the diameter of the heat conduction rod 2 is 500mm, the center-to-center distance between two adjacent heat conduction rods 2 or the center-to-center distance between two adjacent mounting holes is greater than or equal to 1000mm. The center distance is the distance between the center points of the two heat conducting rods 2 or the distance between the center points of the two mounting holes.
In the present embodiment, it is further preferable that the heat conduction rod 2 is a carbon structural steel rod or a brass rod or an aluminum alloy rod. The carbon structural steel is preferably, but not limited to, Q235 steel or 45 # steel, the brass is preferably, but not limited to, H62, and the aluminum alloy is preferably, but not limited to, aluminum alloy 5052.
In the present embodiment, it is further preferable that the length of the heat conduction rod 2 is 3mm to 6mm greater than the thickness of the heat insulation layer, and it is further preferable that the length of the heat conduction rod 2 is 5mm greater than the thickness of the heat insulation layer.
In this embodiment, it is further preferable that, as shown in fig. 1, at least two position markers 3 are provided on the outer surface of the insulation layer, the position markers 3 are objects with different specific heat from the insulation layer, such as metal strips or metal sheets, and in the infrared image, the temperature of the position markers 3 is obviously different from the temperature of the surrounding insulation layer, so as to identify the pixel regions of the position markers 3.
In the present embodiment, it is further preferable that a heat conduction rod thermal insulation material is provided around the heat conduction rod 2. The heat conducting rod thermal insulation material is preferably, but not limited to, polyethylene, and can prevent crosstalk caused by heat conduction of the adjacent heat conducting rods 2 while insulating the heat conducting rods 2.
In this embodiment, it is further preferable that the oil tank includes multiple groups of heat conducting rods 2, each group of heat conducting rods 2 includes multiple heat conducting rods 2 distributed on an axis of a side wall of the oil tank 1 from top to bottom, the multiple groups of heat conducting rods 2 are respectively distributed on different axes, each group of heat conducting rods 2 can obtain an internal layered interface, and the internal layered interfaces obtained through the multiple groups of heat conducting rods 2 are verified mutually to improve the detection accuracy of the layered interfaces.
In an application scenario of the detection assisting apparatus provided in this embodiment, the detection assisting apparatus is used for performing detection of a layered position inside a tank, and includes:
in step S1, an infrared image of the oil tank 1 to which the auxiliary detection device of example 1 is attached is acquired. The tank 1 may be captured by an infrared camera, and preferably, may be photographed by a robot loaded with the infrared camera. For the oil tank 1 with the heat insulation layer in the Shengli oil field, the diameter of the oil tank 1 is 25 meters, the height of the oil tank is 12 meters, the thickness of the heat insulation layer is 8cm, and the shooting distance of the robot can be 16 meters. As shown in fig. 2, the robot photographs an infrared image of the oil tank 1 taken at a distance of 16 m, and it can be seen from the figure that the heat conducting rod 2 can effectively derive the temperature variation trend of the inner wall of the oil tank 1.
And S2, acquiring a pixel area of the heat conducting rod 2 in the infrared image. The mask can be set to identify the pixel area of the heat conducting rod 2 in the infrared image, the shape and the size of the mask are matched with those of the heat conducting rod 2, if the mask is set to be circular, the radius of the mask is the same as that of the heat conducting rod 2, and the pixel area of all the heat conducting rods 2 in the infrared image is divided by using the existing mask dividing method. For another example, the pixel value of a pixel point in the infrared image is the temperature value of an object at a position corresponding to the pixel point, and since the temperature of the heat conduction rod 2 is higher than the temperature of the heat insulation layer, a global temperature threshold value can be set, the pixel point with the pixel value smaller than the global temperature threshold value is filtered, the remaining pixel points are pixel areas of the heat conduction rod 2, and the global temperature threshold value is preferably, but not limited to, the pixel average value of the infrared image.
And S3, obtaining the position of the internal part layer according to the temperature characteristic difference of the pixel areas of the plurality of heat-conducting rods 2.
In this application scenario, preferably, step S3 specifically includes: acquiring the average temperature value of the pixel area of each heat conduction rod 2, specifically, calculating the average pixel value of the pixel area of each heat conduction rod 2, and taking the average pixel value as the average temperature value of the pixel area of each heat conduction rod 2; setting a temperature difference threshold value, and if the difference between the average temperature values of the pixel areas of two adjacent heat-conducting rods 2 is greater than or equal to the temperature difference threshold value, then considering that an internal layered interface exists between the two adjacent heat-conducting rods 2, preferably but not limited to taking the center point of the two adjacent heat-conducting rods 2 as the internal layered interface position. The average temperature value and the temperature difference threshold value of the adjacent heat conducting rods 2 can be compared and judged in a sliding manner from top to bottom or from bottom to top. There may be 4 internal layered interfaces distributed from top to bottom in the oil tank 1 for storing crude oil, the first internal layered interface is a layered interface of air and water vapor (the water vapor is generated by evaporation of crude oil) inside the oil tank 1, the second internal layered interface is a layered interface of water vapor and oil inside the oil tank 1, the third internal layered interface is a layered interface of oil and water inside the oil tank 1, and the fourth internal layered interface is a layered interface of water and impurities such as crushed stones and the like inside the oil tank 1. After obtaining the multiple internal layered interface positions, because the temperature difference between water and oil is the largest, the layered interface with the largest temperature average value difference is selected as an oil-water layered interface in the multiple internal layered interfaces, and then the other layered interface positions are determined according to the height relation of each layered interface.
In the application scenario, the temperature difference threshold may be set in advance, and in order to improve the accuracy of the detection of the layered interface, it is further preferable that the magnitude of the temperature difference threshold is directly related to the crude oil temperature, and the greater the crude oil temperature is, the greater the temperature difference threshold should be set, because the greater the temperature difference between the oil, the water and the gas is at this time. The crude oil temperature can be obtained by a temperature sensor provided on the crude oil input pipeline of the oil tank 1.
In the application scenario, step S3 can also be implemented as follows:
acquiring the average temperature value of the pixel area of each heat conduction rod 2, specifically, calculating the average pixel value of the pixel area of each heat conduction rod 2, and taking the average pixel value as the average temperature value of the pixel area of each heat conduction rod 2;
the variance of the average temperature values of the pixel areas of two adjacent heat-conducting rods 2 from top to bottom or from bottom to top is calculated and recorded as a first variance, and specifically, the first variance of two adjacent heat-conducting rods 2 from top to bottom or from bottom to top is calculated in a sliding manner. Let K be a positive integer greater than 2 with K thermal conduction rods 2, K denoting the thermal conduction rod 2 index, K =1,2, \8230; (K-1). The first variance between the adjacent kth and (k + 1) th heat-conducting rods 2 is:
In the application scenario, there may be 4 internal layered interfaces distributed from top to bottom in the oil tank 1 for storing crude oil, where the first internal layered interface is a layered interface between air and water vapor (the water vapor is generated by evaporation of crude oil) inside the oil tank 1, the second internal layered interface is a layered interface between water vapor and oil inside the oil tank 1, the third internal layered interface is a layered interface between oil and water inside the oil tank 1, and the fourth internal layered interface is a layered interface between water and impurities such as crushed stones and the like inside the oil tank 1. After obtaining the multiple internal layered interface positions, because the temperature difference between water and oil is the largest, in the multiple internal layered interfaces, the layered interface with the largest first direction difference is used as an oil-water layered interface, and then the other layered interface positions are determined according to the height relation of each layered interface.
In the present application scenario, the variance threshold may be set in advance, and in order to improve the accuracy of detecting the boundary position of the inner part of the oil tank 1, it is further preferable that the magnitude of the variance threshold is directly related to the temperature of the crude oil, and the greater the temperature of the crude oil, the greater the setting of the variance threshold, because the greater the temperature difference between the oil, the water and the gas is.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An auxiliary detection device is applied to an oil tank with an external heat insulation layer, and is characterized by comprising a plurality of heat conduction rods distributed on the side wall of the oil tank from top to bottom, wherein the heat conduction rods penetrate through the heat insulation layer and are connected with an oil tank body;
the plurality of heat conducting rods can be distributed on the side wall of the oil tank from top to bottom in a spiral or zigzag manner or along the axis of the side wall of the oil tank.
2. The auxiliary inspection device of claim 1 wherein said plurality of thermally conductive bars are distributed along an axis of said tank.
3. The auxiliary inspection device according to claim 1, wherein the ratio of the maximum length of the heat-conductive rod in the tank axial direction to the tank height is 0.025 to 0.033.
4. An auxiliary detection device as claimed in claim 1,2 or 3, wherein the ratio of the maximum length of the heat conducting rod in the circumferential direction of the oil tank to the diameter of the oil tank is 0.032 to 0.042.
5. An auxiliary detection device as claimed in claim 1,2 or 3, wherein the ratio of the center-to-center distance between two adjacent heat conducting bars to the height of the oil tank is 0.066 to 0.1.
6. The auxiliary detection device as claimed in claim 4, wherein the ratio of the center-to-center distance between two adjacent heat conducting rods to the height of the oil tank is 0.066 to 0.1.
7. The auxiliary detection device of claim 1, wherein the diameter of the heat conducting rod is 30mm to 1000mm;
and/or the center distance between two adjacent heat conducting rods is more than or equal to two times of the diameter of the heat conducting rods.
8. An auxiliary detection device as claimed in claim 1 or 2 or 3 or 6 or 7 wherein said heat conducting rod is a carbon structural steel rod or a brass rod or an aluminum alloy rod;
and/or the length of the heat conducting rod is 3mm to 6mm greater than the thickness of the heat insulating layer.
9. An auxiliary detection device as claimed in claim 1 or 2 or 3 or 6 or 7 wherein a thermally conductive rod insulating material is provided around the thermally conductive rod.
10. An auxiliary detection device as claimed in claim 1,2, 3, 6 or 7 wherein at least two position markers are provided on the outer surface of the insulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202220837606.0U CN217560749U (en) | 2022-04-12 | 2022-04-12 | Auxiliary detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220837606.0U CN217560749U (en) | 2022-04-12 | 2022-04-12 | Auxiliary detection device |
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| CN217560749U true CN217560749U (en) | 2022-10-11 |
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| CN202220837606.0U Active CN217560749U (en) | 2022-04-12 | 2022-04-12 | Auxiliary detection device |
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Denomination of utility model: An auxiliary detection device Effective date of registration: 20230810 Granted publication date: 20221011 Pledgee: Chongqing Yuzhong Sub branch of China Construction Bank Corp. Pledgor: Seven Teng Robot Co.,Ltd. Registration number: Y2023980051686 |