A collector for a GIS and a GIS device

Abstract

The application discloses a collector for GIS and GIS equipment, and relates to the technical field of contact electric connection; the collector comprises a shell of GIS, a conductive rod, an insulating sleeve and a locking unit, the conductive rod is movably connected with the shell, the conductive rod is inserted into the shell and is used for being connected with a conductor of a measured device in the GIS, one end of the conductive rod entering the shell is connected with or separated from the conductor in the GIS, one end of the conductive rod exposed outside the shell is used for external measurement, the insulating sleeve is arranged between the conductive rod and the shell, and the locking unit is used for locking the conductive rod on the shell or unlocking; the GIS equipment comprises the collector and forms the GIS equipment; the conductive rod inserted into the shell is connected with the conductor of the measured device in the GIS, and then the loop resistance of the measured device can be accurately measured.

Description

Technical Field

[0001] This invention relates to the field of contact electrical connection technology, and more particularly to a data collector and GIS equipment for GIS. Background Technology

[0002] GIS is a gas-insulated, fully enclosed combination electrical appliance.

[0003] The author conducted a search using the query TACD_ALL:(GIS AND conductive AND (rod OR bar OR stick) AND (insertion OR entry) AND shell), and obtained the following closest existing technical solutions.

[0004] The authorization notice number is CN211955579U, and the name is "Contact Rod for Testing High-Voltage Switchgear." It includes a conductive copper rod, which is rotatably mounted on an insulated handle. The end of the conductive copper rod is hinged to the front of the insulated handle via a perpendicular pivot. A locking device is provided on the pivot to restrict its rotation. The testing personnel hold the insulated handle and rotate the conductive copper rod, causing it to rotate around the pivot at its end, forming an angle between the conductive copper rod and the insulated handle. The locking device then locks the pivot, maintaining the angle. Next, the head of the conductive copper rod is moved under the output port of the switchgear using the insulated handle, and the insulated handle is lifted upwards, allowing the conductive copper rod to extend into the output port. Finally, the testing equipment is placed on the insulated handle, and the conductive copper rod is clamped using clamps to achieve electrical connection. The operator does not need to crawl into the narrow space under the input port, making the operation convenient, quick, time-saving, labor-saving, and highly efficient.

[0005] The authorization announcement number is CN203325787U, and the name is "A Conductive Rod Connection Structure for GIS". It includes a housing, within which a conductive rod is installed. The conductive rod is threadedly fixed to a contact seat, and petal-shaped contact fingers connect to the conductive rod to form a conductive circuit. Compared with other connection devices, this structure has advantages such as low contact resistance, simple structure, beautiful appearance, low cost, safety and reliability, and strong versatility, offering extremely high cost-effectiveness, especially when the conductive rod is long. It solves the shortcomings of previous methods, such as inconvenient centering installation with guide rods, difficulty in ensuring the insertion depth, high contact resistance, and easy overheating and melting of the contact parts.

[0006] Based on the two patent documents mentioned above and existing technical solutions, the inventors analyze the existing technical solutions as follows.

[0007] According to regulations, the conductive circuit resistance of GIS busbars needs to be tested. Oxidation of contact surfaces, poor contact, and other factors can increase the circuit resistance, leading to higher equipment temperatures. High temperatures further accelerate contact surface oxidation, causing continuous overheating. Therefore, the circuit resistance needs to be measured regularly. Accurate measurement of the circuit resistance can effectively determine whether there are defects such as contact surface oxidation or poor contact in the conductive circuit of the GIS equipment, preventing overheating caused by excessive circuit resistance and ensuring safe and stable operation of the equipment.

[0008] like Figures 3-1 to 3-4 The diagram shows the wiring diagram for the resistance test circuit. I1 and I2 are the current output terminals of the tester; U1 and U2 are the voltage measurement terminals of the tester. The test principle is the DC voltage drop method, that is, a current I of not less than 100A is output between I1 and I2. A voltmeter V is installed between U1 and U2 inside the instrument. The instrument calculates the resistance value based on the collected voltage and current.

[0009] like Figure 3-1 As shown, the current-carrying section is between points J2 and J3, and the voltmeter is connected between points J1 and J4. Since no current flows between J1 and J2, and between J3 and J4, it is equivalent to an extension of the voltage test line. The measured resistance is the resistance between points J2 and J3.

[0010] like Figure 3-2 As shown, the current-carrying section is between points J1 and J3, and the voltmeter is connected between points J2 and J4. Since no current flows between J3 and J4, it is equivalent to an extension of the voltage test lead. The measured resistance is the resistance between points J2 and J3.

[0011] like Figure 3-3 As shown, the current-carrying section is between points J1 and J4, the voltmeter is connected between points J2 and J3, and the measured resistance is the resistance between points J2 and J3.

[0012] like Figure 3-4 As shown, the current-carrying section is between points J2 and J4, and the voltmeter is connected between points J1 and J3. Since no current flows between J1 and J2, it is equivalent to an extension of the voltage test lead. The measured resistance is the resistance between points J2 and J3.

[0013] That is, the resistance measured by the loop resistance tester is the resistance of the current-carrying part between the two voltage measuring lines.

[0014] Existing technical issues and considerations:

[0015] How to solve the technical problem of inaccurate measurement of circuit resistance. Summary of the Invention

[0016] This invention provides a data collector and GIS equipment for GIS, solving the technical problem of inaccurate measurement of loop resistance.

[0017] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0018] A data acquisition device for GIS includes a GIS housing, a conductive rod, an insulating sleeve, and a locking unit. The conductive rod is movably connected to the housing, inserted into the housing, and used to connect with the conductor of the device under test inside the GIS. One end of the conductive rod entering the housing is connected to or separated from the conductor inside the GIS, and the other end of the conductive rod protruding outside the housing is used for external measurement. The insulating sleeve is disposed between the conductive rod and the housing, and the locking unit is used to lock or unlock the conductive rod to the housing.

[0019] A further technical solution is as follows: the locking unit includes a connecting part, a first limiting part, and a second limiting part. The connecting part is fixedly connected to the housing, the first limiting part is fixedly connected to the conductive rod inside the housing, and the second limiting part is fixedly connected to the conductive rod inside the housing. The conductive rod is slidably connected to the housing. The first limiting part is connected to or separated from the connecting part, and the second limiting part is connected to or separated from the connecting part. When the first limiting part is separated from the connecting part, the conductive rod is unlocked. When the second limiting part is connected to the connecting part, the conductive rod is connected to the conductor inside the GIS.

[0020] A further technical solution is that the first limiting part is threadedly connected to the connecting part, and the second limiting part is threadedly connected to the connecting part.

[0021] A further technical solution is that the connecting part includes a first connecting part and a second connecting part, the first connecting part is located on one side of the housing, and the second connecting part is located on the other side of the housing; the first limiting part is threadedly connected to the first connecting part, and the second limiting part is threadedly connected to the second connecting part.

[0022] A further technical solution includes a conductive spring and a conductive post, which are located inside the housing. One end of the conductive spring is fixedly connected to the conductive post, and the other end of the conductive spring is connected to the conductive rod. The conductive rod is connected to or separated from the conductor inside the GIS through the conductive spring and the conductive post.

[0023] A further technical solution includes a knob mounted on the conductive rod, located on the outside of the housing, and fixedly connected to the conductive rod.

[0024] A further technical solution includes a sealing sleeve, which is located between the insulating sleeve and the housing.

[0025] A further technical solution is that the sealing sleeve and the insulating sleeve are fixedly connected.

[0026] A data acquisition device for GIS includes a GIS housing, a conductive rod, an insulating sleeve, and a locking unit. The conductive rod is movably connected to the housing, inserted into the housing, and used to connect with the conductor of the device under test (DUT) inside the GIS. One end of the conductive rod entering the housing is connected to or separated from the conductor inside the GIS, and the other end of the conductive rod protruding outside the housing is used for external measurement. The insulating sleeve is disposed between the conductive rod and the housing. The locking unit is used to lock or unlock the conductive rod to the housing. The conductive rod, insulating sleeve, and locking unit form a data acquisition structure, which includes a first data acquisition structure and a second data acquisition structure with identical structures. The first data acquisition structure is used to connect to one side of the DUT, and the second data acquisition structure is used to connect to the other side of the DUT.

[0027] A GIS device includes the aforementioned data collector and forms a GIS device.

[0028] The beneficial effects of adopting the above technical solution are as follows:

[0029] First, a data acquisition device for GIS includes a GIS housing, a conductive rod, an insulating sleeve, and a locking unit. The conductive rod is movably connected to the housing, inserted into the housing, and used to connect with the conductor of the device under test (DUT) inside the GIS. One end of the conductive rod entering the housing connects to or disconnects from the conductor inside the GIS, while the other end protruding from the housing is used for external measurement. The insulating sleeve is disposed between the conductive rod and the housing, and the locking unit is used to lock or unlock the conductive rod to the housing. This technical solution, by connecting the conductive rod inserted into the housing to the conductor of the DUT inside the GIS, enables accurate measurement of the loop resistance of the DUT.

[0030] Second, the locking unit includes a connecting part, a first limiting part, and a second limiting part. The connecting part is fixedly connected to the housing, the first limiting part is fixedly connected to a conductive rod inside the housing, and the second limiting part is fixedly connected to the conductive rod inside the housing. The conductive rod is slidably connected to the housing. The first limiting part and the connecting part are connected together or separated, and the second limiting part and the connecting part are connected together or separated. When the first limiting part and the connecting part are separated, the conductive rod is unlocked. When the second limiting part and the connecting part are connected, the conductive rod is connected to the conductor inside the GIS. This technical solution can precisely control the connection between the conductive rod and the conductor of the device under test inside the GIS, making operation more convenient.

[0031] Third, the first limiting part and the connecting part are threadedly connected, and the second limiting part and the connecting part are also threadedly connected. The ingenuity of this technical solution lies in the threaded connection between the limiting part and the connecting part. The threaded structure occupies less space, is easier to process, and has more stable performance. Locking or unlocking can be achieved simply by rotating the thread, making operation convenient.

[0032] Fourth, the connecting part includes a first connecting part and a second connecting part. The first connecting part is located on one side of the housing, and the second connecting part is located on the other side of the housing. The first limiting part is threadedly connected to the first connecting part, and the second limiting part is threadedly connected to the second connecting part. In this technical solution, the housing is located between the first connecting part and the second connecting part. After the second limiting part and the second connecting part are connected, the conductive rod will not extend excessively into the housing, and after the first limiting part and the first connecting part are connected, the conductive rod will not be excessively pulled out of the housing. This structure can more accurately control the connection between the conductive rod and the conductor of the device under test in the GIS, making operation more convenient.

[0033] Fifth, it also includes a conductive spring and a conductive post, located inside the housing. One end of the conductive spring is fixedly connected to the conductive post, and the other end is connected to the conductive rod. The conductive rod connects to or separates from the conductor inside the GIS through the conductive spring and the conductive post. This technical solution can buffer the impact of the conductive rod on the conductor, resulting in better contact and further ensuring conductivity.

[0034] Sixth, a data acquisition device for GIS includes a GIS housing, a conductive rod, an insulating sleeve, and a locking unit. The conductive rod is movably connected to the housing, inserted into the housing, and used to connect with the conductor of the device under test (DUT) inside the GIS. One end of the conductive rod entering the housing connects to or separates from the conductor inside the GIS, while the other end protruding from the housing is used for external measurement. The insulating sleeve is disposed between the conductive rod and the housing. The locking unit is used to lock or unlock the conductive rod to the housing. The conductive rod, insulating sleeve, and locking unit form a data acquisition structure, which includes a first acquisition structure and a second acquisition structure with identical structures. The first acquisition structure is used to connect to one side of the DUT, and the second acquisition structure is used to connect to the other side of the DUT. In this technical solution, after the data acquisition device is connected to the conductor, an external tester is connected to form a test circuit. The tester extends the measurement signal into the conductor of the DUT inside the GIS, allowing for the measurement of the technical parameters of the DUT within the GIS. By setting two acquisition structures on the GIS housing corresponding to the DUT within the GIS to form a test circuit, the circuit resistance of the DUT can be accurately measured.

[0035] Seventh, a GIS device includes the aforementioned data collector and forms a GIS device. This technical solution, by connecting a conductive rod inserted into the housing to the conductor of the device under test within the GIS, enables accurate measurement of the loop resistance of the device under test.

[0036] See the detailed implementation section for further description. Attached Figure Description

[0037] Figure 1 This is a structural diagram of Embodiment 1 of the present invention;

[0038] Figure 2 This is the test wiring diagram for Embodiment 2 of the present invention;

[0039] Figure 3-1 This is the first wiring diagram of the research process;

[0040] Figure 3-2 This is the second wiring diagram of the research process;

[0041] Figure 3-3 This is the third wiring diagram of the research process;

[0042] Figure 3-4 This is the fourth wiring diagram in the research process;

[0043] Figure 4 This is a wiring diagram for detecting the circuit resistance of a circuit breaker in existing technology.

[0044] The components are: 1. GIS shell, 2. conductive rod, 3. insulating seal formed by insulating sleeve and sealing sleeve, 4. conductive spring, 5. conductive post, 6. knob, 7. first thread, 8. second thread, 9. third thread, 10. fourth thread, 11. GIS tank, 12. GIS center conductor, and 27. loop resistance tester. Detailed Implementation

[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0046] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0047] Example 1:

[0048] like Figure 1 As shown, this invention discloses a data acquisition device for GIS, comprising a GIS housing, a conductive rod, an insulating sleeve, a locking unit, a conductive spring, a conductive post, a knob, and a sealing sleeve. The conductive rod is movably connected to the housing, inserted into the housing, and used to connect with the conductor of the device under test inside the GIS. One end of the conductive rod entering the housing overlaps or separates from the conductor inside the GIS, and the other end of the conductive rod protruding outside the housing is used for external measurement. The insulating sleeve is disposed between the conductive rod and the housing, and the locking unit is used to lock or unlock the conductive rod to the housing.

[0049] like Figure 1 As shown, the GIS has a housing 1, a conductive rod 2, an insulating seal 3 formed by an insulating sleeve and a sealing sleeve, a conductive spring 4, a conductive post 5, and a knob 6.

[0050] The conductive spring and conductive post are located inside the housing. One end of the conductive spring is fixedly connected to the conductive post, and the other end of the conductive spring is fixedly connected to the conductive rod. The conductive rod connects or separates from the conductor inside the GIS through the conductive spring and conductive post.

[0051] The knob is located on the outside of the housing and is fixedly connected to the conductive rod.

[0052] The sealing sleeve is located between the insulating sleeve and the housing, and the sealing sleeve is fixedly connected to the insulating sleeve.

[0053] The sealing sleeve, insulating sleeve, conductive rod, and knob form a sealing bolt, which, together with the housing, forms an insulating sliding sealing housing.

[0054] The locking unit includes a connecting part, a first limiting part, and a second limiting part. The connecting part is fixedly connected to the housing. The first limiting part is indirectly fixedly connected to the conductive rod inside the housing through a sealing sleeve and an insulating sleeve. The second limiting part is indirectly fixedly connected to the conductive rod inside the housing through a sealing sleeve and an insulating sleeve. The conductive rod is inserted into and slidably engaged with the housing. The first limiting part is connected to or separated from the connecting part, and the second limiting part is connected to or separated from the connecting part. When the first limiting part is separated from the connecting part, the conductive rod is unlocked. When the second limiting part is connected to the connecting part, the conductive rod overlaps with the conductor inside the GIS.

[0055] The first limiting part is indirectly fixedly connected to the conductive rod inside the housing through a sealing sleeve and an insulating sleeve, that is, the first limiting part, the sealing sleeve, the insulating sleeve and the conductive rod are fixedly connected in sequence.

[0056] The second limiting part is indirectly fixedly connected to the conductive rod inside the housing through a sealing sleeve and an insulating sleeve, that is, the second limiting part, the sealing sleeve, the insulating sleeve and the conductive rod are fixedly connected in sequence.

[0057] The connecting part includes a first connecting part and a second connecting part, with the first connecting part located on one side of the housing and the second connecting part located on the other side of the housing.

[0058] like Figure 1 As shown, the first limiting part is the first thread 7, the first connecting part is the second thread 8, the second limiting part is the third thread 9, and the second connecting part is the fourth thread 10.

[0059] The first limiting part is threadedly connected to the first connecting part, and the second limiting part is threadedly connected to the second connecting part.

[0060] Example 2:

[0061] like Figure 2 As shown, this invention discloses a data acquisition device for GIS, comprising a GIS housing, a conductive rod, an insulating sleeve, a locking unit, a conductive spring, a conductive post, a knob, and a sealing sleeve. The conductive rod is movably connected to the housing, inserted into the housing, and used to connect with the conductor of the device under test inside the GIS. One end of the conductive rod entering the housing overlaps or separates from the conductor inside the GIS, and the other end of the conductive rod protruding outside the housing is used for external measurement. The insulating sleeve is disposed between the conductive rod and the housing. The locking unit is used to lock or unlock the conductive rod to the housing. The conductive rod, insulating sleeve, locking unit, conductive spring, conductive post, knob, and sealing sleeve form a data acquisition structure.

[0062] The acquisition structure includes a first acquisition structure and a second acquisition structure with identical structures. The first acquisition structure is used to connect to one side of the device under test, and the second acquisition structure is used to connect to the other side of the device under test.

[0063] like Figure 2 As shown, the GIS shell 1, the GIS tank 11, and the GIS center conductor 12.

[0064] The acquisition structure of Example 2 is the same as that of the acquisition device in Example 1, except for the number of acquisition devices. The similarities will not be described again.

[0065] Example 3:

[0066] The present invention discloses a GIS device including the data collector of Embodiment 1 and forming a GIS device.

[0067] Example 4:

[0068] The present invention discloses a GIS device including the data collector of embodiment 2 and forming a GIS device.

[0069] Example 5:

[0070] This invention discloses a data acquisition device for GIS, comprising a GIS housing, a conductive rod, an insulating sleeve, and a locking unit. The conductive rod is movably connected to the housing, inserted into the housing, and used to connect with the conductor of the device under test inside the GIS. One end of the conductive rod entering the housing overlaps or separates from the conductor inside the GIS, and the other end of the conductive rod protruding outside the housing is used for external measurement. The insulating sleeve is disposed between the conductive rod and the housing, and the locking unit is used to lock or unlock the conductive rod to the housing.

[0071] The difference between Example 5 and Example 1 is that the conductive spring, conductive post, knob, and sealing sleeve are omitted. The conductive spring and conductive post are to further improve the contact performance, the knob is to further facilitate the operation of the conductive rod, and the sealing sleeve is to further improve the sealing performance. In Example 5, the insulating sleeve itself also has a certain degree of sealing. By turning the insulating sleeve by hand, the end of the conductive rod that enters the shell can be connected or separated from the central conductor in the GIS. The technical solution of Example 5 can solve the most basic technical problem to be solved. Other similarities will not be repeated.

[0072] Example 6:

[0073] This invention discloses a data acquisition device for GIS, comprising a GIS housing, a conductive rod, an insulating sleeve, and a locking unit. The conductive rod is movably connected to the housing, inserted into the housing, and used to connect with the conductor of the device under test inside the GIS. One end of the conductive rod entering the housing overlaps or separates from the conductor inside the GIS, and the other end of the conductive rod protruding outside the housing is used for external measurement. The insulating sleeve is disposed between the conductive rod and the housing, and the locking unit is used to lock or unlock the conductive rod to the housing.

[0074] The difference between Embodiment 6 and Embodiment 5 is that there is only one connecting part, that is, the second thread and the fourth thread extend and merge into a complete thread, the first limiting part is threadedly connected to the connecting part, and the second limiting part is threadedly connected to the connecting part. The technical solution of Embodiment 6 can solve the most basic technical problem to be solved, and other similarities will not be repeated.

[0075] Compared to the above embodiments, the locking unit can also be an existing structure such as a bayonet structure, which will not be described in detail here.

[0076] The conductive rod can be overlapped, plugged in, or snapped into the conductor inside the GIS. If the contact head is flat, it is overlapped; if the contact head is concave, it is plugged in; if it has a tripod, it is snapped in. Further details are omitted.

[0077] Research and development process:

[0078] 1. Technical problems to be solved

[0079] like Figure 4 The diagram shows the wiring diagram for testing the circuit resistance of circuit breaker K2 in the GIS equipment. When only circuit breaker K2 is under maintenance, due to factors such as the power grid operation mode, disconnecting switches G21 and G22 are in the open state, while grounding switches D4 and D7 are in the closed state. #1 busbar, #2 busbar.

[0080] The following problems exist:

[0081] A. Without disassembling the GIS equipment, it is impossible to accurately test the loop resistance of grounding switches D5 and D6;

[0082] B. To test the circuit resistance of circuit breaker K2, remove the grounding connections of grounding switches D5 and D6 (cd5 and cd6). Connect I1 and U1 to cd5, and I2 and U2 to cd6. Close D5, D6, and K2, and open G21 and G22. Operate the circuit resistance tester to test the circuit resistance of circuit breaker K2. The test result is the sum of the circuit resistances of grounding switches D5 and D6 and circuit breaker K2. If the circuit resistance of any one or more of the following devices exceeds the standard, it will cause abnormal test results, making it impossible to accurately determine whether the circuit resistance of circuit breaker K2 is qualified or whether circuit breaker K2 has any abnormality.

[0083] 2 Technical Solution

[0084] This technical solution aims to address how to accurately measure the loop resistance of D5, D6, and K2 without operating any devices other than K2, D5, and D6 in their open / closed states.

[0085] like Figure 1 As shown, the device is installed on the GIS housing. Inside the sealing bolt is a conductive rod, with a conductive spring at the top and a conductive post at the top of the spring. An insulating sliding sealing shell is installed outside the sealing bolt to insulate the conductive rod from the GIS housing. The insulating sliding sealing shell has two threads that mate with the GIS housing for fixing the sealing bolt to the GIS housing. The middle of the sealing shell provides a sliding seal with the GIS housing.

[0086] Device usage instructions:

[0087] Step 1: Under normal operating conditions, the sealing bolt is tightened by engaging the first thread of the sealing bolt with the second thread of the GIS housing, thereby achieving a seal between the inside and outside of the GIS.

[0088] In Step 2, during maintenance and testing, when it is necessary to measure the circuit resistance, loosen the first thread and push the sealing bolt into the GIS air chamber. The conductive column presses against the GIS center conductor under the pressure of the conductive spring, realizing the electrical connection between the center conductor, conductive column, conductive spring, and conductive rod. The sealing bolt is then tightened by engaging the third thread of the sealing bolt with the fourth thread of the GIS housing.

[0089] After the test in Step 3 is completed, loosen the third thread of the sealing bolt to remove the sealing bolt, and restore the state in Step 1 to achieve the internal and external sealing of the GIS.

[0090] like Figure 2The diagram shows the wiring diagram for testing the loop resistance of circuit breaker K2 in GIS equipment. The GIS tank 11 and GIS shell 1 are connected. Two innovative devices are installed at positions C1 and C2 on the GIS shell 1, respectively. Following Step 1 and Step 2, the conductive rods of the innovative devices are electrically connected to points A and B on the central conductor 12 of the GIS, ensuring that K2, D5, and D6 are in the closed state. The grounding terminals of grounding switches D5 and D6 are removed. The two current output lines of the loop resistance tester 27 are connected to the grounding terminals of D5 and D6, respectively.

[0091] 1. Connect the voltage test leads of the loop resistance tester 27 to the ends of the conductive rods of the innovative device at points C1 and C2 respectively. The conductive rods, as extensions of the voltage test leads, are equivalent to the voltage test leads being directly connected to points A and B, thus eliminating interference from grounding switches D5 and D6 and accurately testing the loop resistance of circuit breaker K2.

[0092] 2. If the voltage test leads of the loop resistance tester 27 are connected to the end of the conductive rod of the innovative device at point C1 and the end of D5 respectively, the conductive rod, as an extension of the voltage test leads, is equivalent to the voltage test leads being directly connected to point A, thereby eliminating interference from the circuit breaker K2 and accurately testing the loop resistance of the disconnector D5.

[0093] 3. Similarly, the loop resistance of grounding switch D6 can be tested.

[0094] When only circuit breaker K2 is under maintenance, due to factors such as the power grid operation mode, without changing the status of adjacent disconnect switches G21 and G22, grounding switches D4 and D7, an innovative device is used to extend the center conductors of the GIS on both sides of circuit breaker K2. This facilitates the connection of the voltage test lines of the loop resistance tester, thereby accurately testing the loop resistance of circuit breaker K2, grounding switches D5 and D6 while eliminating interference from other equipment.

[0095] Technical contributions of this application:

[0096] After communicating with the inventor, the inventor believed the difference lay in:

[0097] The authorization announcement number is CN211955579U, and the name is "Contact Rod for Testing High-Voltage Switchgear". Although it also designs contact rods, it is designed for GIS high-voltage switchgear, while this application is for circuit breakers and grounding switches inside GIS tanks. That is, the target objects are different, and of course, the solutions are also different.

[0098] The authorization announcement number is CN203325787U, and the title is "A Conductive Rod Connection Structure for GIS". At first glance, it seems that the conductive rod is equivalent to the central conductor of the GIS in this application, serving an electrical connection function; however, they are fundamentally different. The solution in this application involves extending a point of the central conductor on both sides of the circuit breaker K2, thereby facilitating the measurement of the loop resistance between the circuit breaker and the grounding switch.

[0099] The inventors believe that the technological contribution of this project lies in:

[0100] like Figure 1 As shown, the technical solution includes a GIS housing, a conductive rod, an insulating sleeve, a locking unit, a conductive spring, a conductive post, a knob, and a sealing sleeve. The conductive rod is slidably connected to the housing and inserted into the housing. One end of the conductive rod entering the housing overlaps or separates from a conductor inside the GIS. The end of the conductive rod protruding outside the housing is used for external measurement. The insulating sleeve is placed between the conductive rod and the housing. The locking unit is used to lock or unlock the conductive rod onto the housing. The locking unit includes a first connecting part, a second connecting part, a first limiting part, and a second limiting part, all of which are threaded. The first limiting part, i.e., the first thread 7, is threadedly connected to the first connecting part, i.e., the second thread 8. The second limiting part, i.e., the third thread 9, is threadedly connected to the second connecting part, i.e., the fourth thread 10.

[0101] In use, turning knob 6 separates the first thread 7 from the second thread 8. The sealing sleeve, insulating sleeve, conductive rod, and knob form a sealing bolt that can slide freely against the GIS shell 1, pushing the conductive rod 2 into the GIS tank. The distance between the first thread 7 and the third thread 9 on the insulating seal 3 formed by the insulating sleeve and sealing sleeve is designed based on the distance between the circuit breaker inside the GIS tank and the GIS shell. When the third thread 9 and the fourth thread 10 overlap and contact, it can be clearly felt by hand. Turning knob 6 connects the third thread 9 and the fourth thread 10, causing the conductive post 5 to overlap with the conductor next to the circuit breaker inside the GIS tank. This structural design allows for precise control of the conductive rod 2 overlapping with the circuit breaker conductor, making operation more convenient. This conductor, the central conductor inside the GIS, is connected to the circuit breaker. After connecting this data acquisition device to this conductor, it can obtain the electrical signal of the circuit breaker inside the GIS.

[0102] The advantages of using a threaded connection structure include: easy processing, convenient operation, stable performance, and space saving.

[0103] After thorough discussion, the authors and project team believe that the technical contributions of this project lie in two aspects:

[0104] First aspect:

[0105] The GIS is composed of a housing, a conductive rod, an insulating sleeve, and a locking unit. The conductive rod is movably connected to the housing and inserted into the housing. One end of the conductive rod inside the housing is connected to or separated from the conductor inside the GIS. The end of the conductive rod protruding outside the housing is used for external measurement. The insulating sleeve is placed between the conductive rod and the housing. The locking unit is used to lock or unlock the conductive rod to the housing. This part is fundamentally different from existing technical solutions and is not easily conceived.

[0106] In this structural design, the conductor, which is the central conductor within the GIS, is connected to the device under test (DUT). After the data acquisition unit is connected to this conductor, it is used to obtain the electrical signals of the DUT within the GIS, or to transmit the measurement signals of the testing instrument to the DUT. This structure is the greatest technical contribution of the first aspect of this application.

[0107] The device under test can be a circuit breaker or a grounding switch, etc.

[0108] The locking unit can be implemented using a threaded connection structure or an existing structure such as a bayonet structure.

[0109] A further improvement lies in the structure of the locking unit, which includes a connecting part, a first limiting part, and a second limiting part. The connecting part is fixedly connected to the housing. The first limiting part is indirectly or directly fixedly connected to the conductive rod inside the housing. The second limiting part is indirectly or directly fixedly connected to the conductive rod inside the housing. The conductive rod is slidably connected to the housing. The first limiting part is connected to or separated from the connecting part, and the second limiting part is connected to or separated from the connecting part. When the first limiting part is separated from the connecting part, the conductive rod is unlocked. When the second limiting part is connected to the connecting part, the conductive rod overlaps with the conductor inside the GIS.

[0110] The structure of this locking unit allows for precise control of the conductive rod's connection with the conductor of the device under test within the GIS, making operation more convenient. The explanation is as follows:

[0111] In use, the locking unit is released, and the first limiting part on the insulating sleeve separates from the connecting part on the shell. The insulating sleeve and the conductive rod form a sealing bolt that can slide freely against the GIS shell, pushing the conductive rod into the GIS tank. The distance between the first and second limiting parts on the insulating seal formed by the insulating sleeve is designed based on the distance between the device under test (DUT) inside the GIS tank and the GIS shell. When the second limiting part overlaps and contacts the connecting part, it can be clearly felt by hand. Locking the locking unit then connects the second limiting part and the connecting part together, allowing the conductive rod to overlap with the conductor next to the DUT inside the GIS tank. This structural design allows for precise control of the overlap between the conductive rod and the conductor of the DUT, making operation more convenient.

[0112] The structure can have one connecting part, i.e., a complete thread, with one end of the thread extending from one side of the housing to the other. When the first limiting part is connected to the connecting part, the second limiting part is separated from the connecting part; conversely, when the second limiting part is connected to the connecting part, the first limiting part is separated from the connecting part. Care must be taken when connecting the second limiting part and the connecting part; the second limiting part and the connecting part should only be connected together, and the conductive rod should not be allowed to extend too far into the housing to avoid excessive pressure on the conductor. This structure allows for precise control of the conductive rod's connection with the conductor of the device under test within the GIS, and is easy to operate.

[0113] In addition, the connecting part can be divided into two parts, including a first connecting part and a second connecting part. The first connecting part is located on one side of the housing, and the second connecting part is located on the other side of the housing. The first limiting part is connected to or separated from the first connecting part, and the second limiting part is connected to or separated from the second connecting part. The advantage is that the housing is between the first connecting part and the second connecting part. After the second limiting part and the second connecting part are connected, the conductive rod will not extend excessively into the housing, and after the first limiting part and the first connecting part are connected, the conductive rod will not be excessively pulled out of the housing. This structure can more accurately control the connection between the conductive rod and the conductor of the device under test in the GIS, and the operation is more convenient.

[0114] The ingenious part is that the limiting part and the connecting part are connected by threads. The threaded structure occupies less space, is easier to process, and has more stable performance. Locking or unlocking can be achieved simply by rotating, making it easy to operate.

[0115] A further improvement lies in the conductive spring and conductive post, located inside the housing. One end of the conductive spring is fixedly connected to the conductive post, and the other end is connected to the conductive rod. The conductive rod connects to or separates from the conductor inside the GIS via the conductive spring and conductive post. This buffers the impact of the conductive rod on the conductor, resulting in better contact and further ensuring conductivity.

[0116] A further improvement is that the knob on the conductive rod is more convenient to operate.

[0117] The second aspect:

[0118] The device includes a GIS housing, a conductive rod, an insulating sleeve, and a locking unit. The conductive rod is movably connected to the housing and is inserted into the housing. One end of the conductive rod inside the housing connects to or separates from a conductor inside the GIS. The end of the conductive rod protruding outside the housing is used for external measurement. The insulating sleeve is disposed between the conductive rod and the housing. The locking unit is used to lock or unlock the conductive rod to the housing. The conductive rod, insulating sleeve, and locking unit form a data acquisition structure. The data acquisition structure includes a first data acquisition structure and a second data acquisition structure with identical structures. The first data acquisition structure is used to connect to a conductor on one side of the device under test, and the second data acquisition structure is used to connect to a conductor on the other side of the device under test. This part is fundamentally different from existing technical solutions and is not easily conceived.

[0119] The conductor refers to the central conductor within the GIS. The device under test (DUT) is connected to a first conductor on one side and a second conductor on the other. This data acquisition device includes a first acquisition structure and a second acquisition structure. The first acquisition structure is used to connect to the first conductor, and the second acquisition structure is used to connect to the second conductor. After the data acquisition device is connected to the conductor, an external testing instrument is connected to form a test loop. The testing instrument extends the measurement signal into the conductor of the DUT within the GIS, allowing the measurement of the technical parameters of the DUT within the GIS. The fact that two acquisition structures are provided on the GIS housing corresponding to the DUT within the GIS to form a test loop is the greatest technical contribution of the second aspect of this application.

[0120] Currently, the technical solution of this invention has undergone pilot testing, which is a small-scale trial of the product before large-scale mass production. After the pilot testing was completed, a user survey was conducted on a small scale, and the survey results showed that user satisfaction was high. Now, preparations have begun for the formal production and industrialization of the product (including intellectual property risk warning surveys).

Claims

1. A data collector for GIS, characterized in that: The system includes a GIS housing, a conductive rod, an insulating sleeve, a locking unit, a knob, and a sealing sleeve. The conductive rod is movably connected to the housing, inserts into the housing, and connects to the conductor of the device under test (DUT) inside the GIS. One end of the conductive rod entering the housing connects to or disconnects from the conductor inside the GIS, while the other end protruding from the housing is used for external measurement. The insulating sleeve is positioned between the conductive rod and the housing. The locking unit is used to lock or unlock the conductive rod to the housing. The locking unit includes a connecting part, a first limiting part, and a second limiting part. The connecting part is fixedly connected to the housing, the first limiting part is fixedly connected to the conductive rod inside the housing, and the second limiting part is fixedly connected to the conductive rod outside the housing. The conductive rod is slidably connected to the housing. The first limiting part is connected to or separated from the connecting part, and the second limiting part is connected to or separated from the connecting part. When the first limiting part is separated from the connecting part, the conductive rod is unlocked. When the second limiting part is connected to the connecting part, the conductive rod is connected to the conductor inside the GIS. The connecting part includes a first connecting part and a second connecting part. The first connecting part is located on one side of the housing, and the second connecting part is located on the other side of the housing. The first limiting part is threadedly connected to the first connecting part, and the second limiting part is threadedly connected to the second connecting part. The knob is set on the conductive rod and is located on the outside of the housing. The knob is fixedly connected to the conductive rod. The sealing sleeve is located between the insulating sleeve and the housing and is fixedly connected to the insulating sleeve.

2. A data collector for GIS according to claim 1, characterized in that: It also includes a conductive spring and a conductive post, which are located inside the housing. One end of the conductive spring is fixedly connected to the conductive post, and the other end of the conductive spring is connected to the conductive rod. The conductive rod is connected to or separated from the conductor in the GIS through the conductive spring and the conductive post.

3. A data collector for GIS, characterized in that: The system includes a GIS housing, a conductive rod, an insulating sleeve, a locking unit, a knob, and a sealing sleeve. The conductive rod is movably connected to the housing, inserts into the housing, and connects to the conductor of the device under test (DUT) inside the GIS. One end of the conductive rod entering the housing connects to or separates from the conductor inside the GIS, while the other end protruding from the housing is used for external measurement. The insulating sleeve is positioned between the conductive rod and the housing. The locking unit is used to lock or unlock the conductive rod onto the housing. The locking unit includes a connecting part, a first limiting part, and a second limiting part. The connecting part is fixedly connected to the housing, the first limiting part is fixedly connected to the conductive rod inside the housing, and the second limiting part is fixedly connected to the conductive rod outside the housing. The conductive rod is slidably connected to the housing. The first limiting part and the connecting part are connected together or separate, and the second limiting part and the connecting part are connected together or separate. The limiting part separates from the connecting part, unlocking the conductive rod. When the second limiting part connects with the connecting part, the conductive rod is connected to the conductor inside the GIS. The connecting part includes a first connecting part and a second connecting part, with the first connecting part located on one side of the housing and the second connecting part located on the other side of the housing. The first limiting part is threadedly connected to the first connecting part, and the second limiting part is threadedly connected to the second connecting part. The knob is mounted on the conductive rod, located outside the housing, and is fixedly connected to the conductive rod. The sealing sleeve is located between the insulating sleeve and the housing, and is fixedly connected to the insulating sleeve. The conductive rod, the insulating sleeve, and the locking unit form a data acquisition structure, which includes a first data acquisition structure and a second data acquisition structure with identical structures. The first data acquisition structure is used to connect to one side of the device under test, and the second data acquisition structure is used to connect to the other side of the device under test.

4. A GIS device, characterized in that: The data collector includes any one of claims 1 to 3 and forms a GIS device.

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