A method for using an auxiliary detection device

Abstract

The present invention relates to the technical field of detection equipment, and specifically discloses a method for using an auxiliary detection device. The auxiliary detection device includes a connecting component, a first vacuum gauge and a second vacuum gauge; the connecting component includes a connecting pipe, a first valve and a second valve, one end of the first valve is connected to the connecting pipe, the other end of the first valve is connected to the first part to be detected, and one end of the second valve is connected to the connecting pipe, and the other end of the second valve is connected to the second part to be detected; wherein the first vacuum gauge is arranged on the channel between the first valve and the first part to be detected, and the second vacuum gauge is arranged on the connecting pipe. When the first part to be detected performs a vacuum operation on the second part to be detected, the present invention can judge the air tightness of the first part to be detected according to the change in the pressure value of the first vacuum gauge by closing the first valve, and judge the air tightness of the second part to be detected according to the change in the pressure value of the second vacuum gauge, thereby shortening the air tightness detection time and avoiding the extension of the construction period.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to a method for using an auxiliary detection device. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, secondary coil and iron core. Its main functions include: voltage conversion, current conversion, impedance conversion, isolation and voltage stabilization.

[0003] In recent years, the main transformer has frequently failed, so it is necessary to inspect, repair and replace the main transformer. After the inspection, repair and replacement of the main transformer, the main transformer needs to be vacuumed. However, during the vacuuming of the main transformer, sometimes the vacuum cannot be drawn. On the one hand, it may be that there is a leak in the main transformer, and on the other hand, there is a leak in the vacuum machine and its pipeline.

[0004] In the prior art, it is necessary to break the vacuum of the main transformer, fill it with nitrogen and pressurize it, and then apply soapy water to detect the leakage point. However, since this method requires breaking the vacuum of the main transformer, if there is no leakage point in the main transformer but the vacuum machine and its pipeline have leakage points, the main transformer needs to be vacuumed again. This process will extend the on-site construction period and affect the timely power supply of the main transformer. Summary of the invention

[0005] The object of the present invention is to provide an auxiliary detection device and a method for using the same, so as to solve the problem that the on-site construction period will be prolonged when using the existing technology to detect the leakage point of the main transformer.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] In one aspect, the present invention provides an auxiliary detection device for detecting the air tightness of a first to-be-detected component and a second to-be-detected component, the auxiliary detection device comprising:

[0008] A connecting component, wherein the connecting component comprises a connecting pipe, a first valve and a second valve; one end of the first valve is connected to the connecting pipe, and the other end of the first valve is connected to the first part to be detected; one end of the second valve is connected to the connecting pipe, and the other end of the second valve is connected to the second part to be detected;

[0009] A first vacuum gauge, the first vacuum gauge being arranged on the passage between the first valve and the first part to be detected;

[0010] The second vacuum gauge is arranged on the connecting pipe.

[0011] As an optional solution of the auxiliary detection device, the connecting pipe is provided with a plurality of connecting ports, one of the plurality of connecting ports is connected to the first valve, and the remaining connecting ports are connected to the second valve in a one-to-one correspondence.

[0012] As an optional scheme of the above-mentioned auxiliary detection device, the above-mentioned auxiliary detection device also includes a first flange member and a second flange member; one end of the above-mentioned first flange member is connected to the above-mentioned first valve, and the other end of the above-mentioned first flange member is connected to the above-mentioned first part to be detected; one end of the above-mentioned second flange member is connected to the above-mentioned second valve, and the other end of the above-mentioned second flange member is connected to the above-mentioned second part to be detected.

[0013] As an optional solution of the auxiliary detection device, bolt holes are provided on the first flange and the second flange, and bolt structures can pass through the bolt holes to connect the first part to be detected to the first flange, and connect the second part to be detected to the second flange.

[0014] As an optional solution of the auxiliary detection device, a plurality of the bolt holes are provided, and the plurality of bolt holes are evenly arranged on the outer circumference of the first flange component and the second flange component.

[0015] As an optional solution of the auxiliary detection device, there are four bolt holes on the first flange and the second flange, and the four bolt holes can form a square; and the hole distance between any two adjacent bolt holes is 60mm, 80mm or 100mm.

[0016] As an optional solution of the auxiliary detection device, the connecting pipe is a four-way steel pipe.

[0017] As an optional solution of the auxiliary detection device, the first valve and the second valve are both ball valves.

[0018] In another aspect, the present invention provides a method for using an auxiliary detection device. The method for using the auxiliary detection device is performed using the auxiliary detection device as described above. The method for using the auxiliary detection device comprises the following steps:

[0019] S1, connecting the first part to be detected with the first valve, and connecting the second part to be detected with the second valve; opening the first valve and the second valve at the same time, and performing a vacuum operation on the second part to be detected through the first part to be detected;

[0020] S2. If the pressure values ​​of the first vacuum gauge and the second vacuum gauge are always higher than the standard pressure value, read the pressure values ​​of the first vacuum gauge and the second vacuum gauge at this time, close the first valve, and keep the second valve open;

[0021] S3. Continuously evacuate the second part to be detected through the first part to be detected, read the pressure values ​​of the first vacuum gauge and the second vacuum gauge, and determine the airtightness of the first part to be detected according to the change of the pressure value of the first vacuum gauge, and determine the airtightness of the second part to be detected according to the change of the pressure value of the second vacuum gauge.

[0022] As an optional scheme for using the above-mentioned auxiliary detection device, the above-mentioned standard pressure value is less than 133 Pa.

[0023] The beneficial effects of the present invention are:

[0024] The auxiliary detection device includes a connecting component, a first vacuum gauge and a second vacuum gauge. The connecting component includes a connecting pipe, a first valve and a second valve, one end of the first valve is connected to the connecting pipe, the other end of the first valve is connected to the first part to be detected, and one end of the second valve is connected to the connecting pipe, and the other end of the second valve is connected to the second part to be detected, so that the first part to be detected and the second part to be detected can be connected through the connecting component, so that the second part to be detected can be vacuumed through the first part to be detected. At the same time, the first valve can control the on-off of the first part to be detected and the connecting component, and the second valve can control the on-off of the second part to be detected and the connecting component. Among them, the first vacuum gauge is arranged on the channel between the first valve and the first part to be detected, and the second vacuum gauge is arranged on the connecting pipe, so that when the first part to be detected performs a vacuum operation on the second part to be detected, by closing the first valve, the air tightness of the first part to be detected can be judged according to the pressure value change of the first vacuum gauge, and the air tightness of the second part to be detected can be judged according to the pressure value change of the second vacuum gauge, so as to shorten the detection time of the air tightness of the first part to be detected and the second part to be detected, and avoid the extension of the construction period.

[0025] The method for using the auxiliary detection device of the present invention is completed using the above-mentioned auxiliary detection device. The method for using the auxiliary detection device is simple and convenient in operation. By closing the first valve, the air tightness of the first part to be detected and the second part to be detected can be determined from the changes in the pressure values ​​of the first vacuum gauge and the second vacuum gauge. The detection time is short and the detection accuracy is high, which can facilitate the staff to quickly judge the air tightness of the first part to be detected and the second part to be detected, thereby avoiding the extension of the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of an auxiliary detection device provided by an embodiment of the present invention;

[0027] Figure 2 A schematic flow chart of a method for using the auxiliary detection device provided in an embodiment of the present invention.

[0028] In the figure:

[0029] 1. Connecting assembly; 11. Connecting pipe; 12. First valve; 13. Second valve; 2. First vacuum gauge; 3. Second vacuum gauge; 4. First flange; 5. Second flange; 6. Bolt structure. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 indirectly connected 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 according to specific circumstances.

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] Embodiment 1

[0035] This embodiment provides an auxiliary detection device for detecting the air tightness of a first component to be detected and a second component to be detected.

[0036] like Figure 1 As shown, the auxiliary detection device includes a connecting component 1, a first vacuum gauge 2 and a second vacuum gauge 3. The connecting component 1 includes a connecting pipe 11, a first valve 12 and a second valve 13, one end of the first valve 12 is connected to the connecting pipe 11, and the other end of the first valve 12 is connected to the first part to be detected, and one end of the second valve 13 is connected to the connecting pipe 11, and the other end of the second valve 13 is connected to the second part to be detected, so that the first part to be detected and the second part to be detected can be connected through the connecting component 1, so that the second part to be detected can be vacuumed through the first part to be detected. Optionally, the first part to be detected is a vacuum machine, and the second part to be detected is a main transformer.

[0037] At the same time, the first valve 12 can control the on-off of the first part to be detected and the connecting component 1, and the second valve 13 can control the on-off of the second part to be detected and the connecting component 1. Among them, the first vacuum gauge 2 is arranged on the channel between the first valve 12 and the first part to be detected, and the second vacuum gauge 3 is arranged on the connecting pipe 11, so that when the first part to be detected performs a vacuum operation on the second part to be detected, by closing the first valve 12, the air tightness of the first part to be detected can be judged according to the pressure value change of the first vacuum gauge 2, and the air tightness of the second part to be detected can be judged according to the pressure value change of the second vacuum gauge 3, thereby shortening the inspection time of the air tightness of the first part to be detected and the second part to be detected, and avoiding the extension of the construction period. Optionally, the first valve 12 and the second valve 13 are both ball valves, which have good sealing performance and can avoid air infiltration during the vacuuming process.

[0038] Furthermore, the connecting pipe 11 is provided with a plurality of connecting ports, one of which is connected to the first valve 12, and the other connecting ports are connected to the second valve 13 in a one-to-one correspondence, thereby ensuring that a first part to be detected can be connected to the connecting component 1. At the same time, if there are a plurality of connecting ports connected to the second valve 13, the connecting component 1 can be connected to a plurality of second parts to be detected at the same time, so as to satisfy the air tightness detection of the plurality of second parts to be detected by the auxiliary detection device. Specifically, when the air tightness of the main transformer is detected, the second valve 13 corresponding to the main transformer to be detected is opened, and the other second valves 13 are closed to avoid the other main transformers from affecting the main transformer to be detected. Optionally, the connecting pipe 11 is a four-way steel pipe, and the sealing of the auxiliary detection device can be ensured by using the four-way steel pipe.

[0039] Furthermore, the auxiliary detection device also includes a first flange member 4 and a second flange member 5, one end of the first flange member 4 is connected to the first valve 12, the other end of the first flange member 4 is connected to the first part to be detected, and one end of the second flange member 5 is connected to the second valve 13, and the other end of the second flange member 5 is connected to the second part to be detected. By setting the first flange member 4, the problem that the first part to be detected cannot be directly connected to the first valve 12, and the problem that the second part to be detected cannot be directly connected to the second valve 13 can be solved.

[0040] Furthermore, bolt holes are provided on the first flange 4 and the second flange 5, and the bolt structure 6 can pass through the bolt holes to connect the first part to be detected to the first flange 4, and the second part to be detected to the second flange 5, so that the bolt structure 6 can realize the detachable connection between the first part to be detected and the first flange 4, and the detachable connection between the second part to be detected and the second flange 5, so that the staff can replace the first part to be detected and the second part to be detected at any time, so as to facilitate the auxiliary detection device to detect the air tightness of other first parts to be detected and the second parts to be detected. Among them, there are multiple bolt holes, and the multiple bolt holes are evenly arranged on the outer periphery of the first flange 4 and the second flange 5, so that the multiple bolt structures 6 pass through the multiple bolt holes one by one, which can enhance the stability of the connection between the first part to be detected and the first flange 4, and the second part to be detected and the second flange 5.

[0041] Optionally, there are four bolt holes on each of the first flange 4 and the second flange 5, and the four bolt holes can be surrounded by a square, and the hole spacing between any two adjacent bolt holes is 60mm, 80mm or 100mm, so that by using the first flange 4 with different hole spacings, different first parts to be detected can be connected, and by using the second flange 5 with different hole spacings, different second parts to be detected can be connected, so as to improve the universality of the auxiliary detection device. At the same time, if there are multiple connecting ports connected to the second valve 13, the second flange 5 with a hole spacing of 60mm, the second flange 5 with a hole spacing of 80mm and the second flange 5 with a hole spacing of 100mm can be respectively arranged on different second valves 13. Specifically, the second flange 5 with a hole spacing of 60mm can be applicable to 110kV main transformers, the second flange 5 with a hole spacing of 80mm can be applicable to 220kV main transformers, and the second flange 5 with a hole spacing of 100mm can be applicable to 500kV main transformers.

[0042] Embodiment 2

[0043] This embodiment provides a method for using an auxiliary detection device. The method for using the auxiliary detection device is performed using the auxiliary detection device in the first embodiment. Figure 2 As shown, the method for using the auxiliary detection device includes the following steps:

[0044] S1, connecting the first part to be detected with the first valve 12, and connecting the second part to be detected with the second valve 13; opening the first valve 12 and the second valve 13 at the same time, and performing a vacuum operation on the second part to be detected through the first part to be detected;

[0045] S2. If the pressure values ​​of the first vacuum gauge 2 and the second vacuum gauge 3 are always higher than the standard pressure value, read the pressure values ​​of the first vacuum gauge 2 and the second vacuum gauge 3 at this time, close the first valve 12, and keep the second valve 13 open;

[0046] S3. Continuously perform a vacuum operation on the second part to be detected through the first part to be detected, read the pressure values ​​of the first vacuum gauge 2 and the second vacuum gauge 3, and determine the airtightness of the first part to be detected according to the change of the pressure value of the first vacuum gauge 2, and determine the airtightness of the second part to be detected according to the change of the pressure value of the second vacuum gauge 3.

[0047] The method for using the auxiliary detection device provided in this embodiment is simple and convenient in operation. By closing the first valve 12, the air tightness of the first part to be detected and the second part to be detected can be determined from the pressure value changes of the first vacuum gauge 2 and the second vacuum gauge 3. The detection time is short and the detection accuracy is high. It is convenient for the staff to quickly judge the air tightness of the first part to be detected and the second part to be detected, thereby avoiding the extension of the construction period. Among them, in the process of detecting the second part to be detected, the second valve 13 operated is the second valve 13 corresponding to the second part to be detected, and the other second valves 13 are in a closed state. Optionally, the standard pressure value is less than 133Pa, so that the pressure value after vacuuming in the main transformer is also less than 133Pa, so as to ensure that the pressure requirement is met inside the main transformer.

[0048] Specifically, if the pressure value of the first vacuum gauge 2 does not change, and the pressure value of the second vacuum gauge 3 does not change, then the first part to be detected has an airtightness problem, and the second part to be detected has no airtightness problem; if the pressure value of the first vacuum gauge 2 changes to decrease, and the pressure value of the second vacuum gauge 3 changes to increase, then the first part to be detected has no airtightness problem, and the second part to be detected has an airtightness problem; if the pressure value of the first vacuum gauge 2 does not change, and the pressure value of the second vacuum gauge 3 changes to increase, then both the first part to be detected and the second part to be detected have airtightness problems.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A method for using an auxiliary detection device, for detecting the air tightness of a first to-be-detected component and a second to-be-detected component, the auxiliary detection device comprising: A connecting component (1), the connecting component (1) comprising a connecting pipe (11), a first valve (12) and a second valve (13); one end of the first valve (12) is connected to the connecting pipe (11), and the other end of the first valve (12) is connected to the first part to be detected; one end of the second valve (13) is connected to the connecting pipe (11), and the other end of the second valve (13) is connected to the second part to be detected; the connecting pipe (11) is provided with a plurality of connecting ports, one of the plurality of connecting ports is connected to the first valve (12), and the other connecting ports are connected to the second valves (13) in a one-to-one correspondence; a first vacuum gauge (2), the first vacuum gauge (2) being arranged on a channel between the first valve (12) and the first part to be detected; a second vacuum gauge (3), the second vacuum gauge (3) being arranged on the connecting pipe (11); The auxiliary detection device further comprises a first flange (4) and a second flange (5); one end of the first flange (4) is connected to the first valve (12), and the other end of the first flange (4) is connected to the first object to be detected; one end of the second flange (5) is connected to the second valve (13), and the other end of the second flange (5) is connected to the second object to be detected; Characterized in that, the method for using the auxiliary detection device comprises the following steps: S1. Connecting the first part to be detected to the first valve (12), and connecting the second part to be detected to the second valve (13); opening the first valve (12) and the second valve (13) at the same time, and performing a vacuum operation on the second part to be detected through the first part to be detected; S2. If the pressure values ​​of the first vacuum gauge (2) and the second vacuum gauge (3) are always higher than the standard pressure value, then read the pressure values ​​of the first vacuum gauge (2) and the second vacuum gauge (3) at this time, close the first valve (12), and keep the second valve (13) open; S3. Continuously evacuate the second part to be detected through the first part to be detected, read the pressure values ​​of the first vacuum gauge (2) and the second vacuum gauge (3), and determine the air tightness of the first part to be detected based on the change in the pressure value of the first vacuum gauge (2), and determine the air tightness of the second part to be detected based on the change in the pressure value of the second vacuum gauge (3).

2. The method for using the auxiliary detection device according to claim 1, characterized in that: The first flange (4) and the second flange (5) are both provided with bolt holes, and the bolt structures (6) can pass through the bolt holes to connect the first part to be detected to the first flange (4) and the second part to be detected to the second flange (5).

3. The method for using the auxiliary detection device according to claim 2, characterized in that: A plurality of bolt holes are provided, and the plurality of bolt holes are evenly arranged on the outer circumference of the first flange member (4) and the second flange member (5).

4. The method for using the auxiliary detection device according to claim 2, characterized in that: The first flange member (4) and the second flange member (5) are each provided with four bolt holes, and the four bolt holes can form a square; and the hole distance between any two adjacent bolt holes is 60 mm, 80 mm or 100 mm.

5. The method for using the auxiliary detection device according to claim 1, characterized in that: The connecting pipe (11) is a four-way steel pipe.

6. The method for using the auxiliary detection device according to claim 1, characterized in that: The first valve (12) and the second valve (13) are both ball valves.

7. The method for using the auxiliary detection device according to claim 1, characterized in that: The standard pressure value is less than 133 Pa.

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