A kind of disconnectable gas branch joint

Abstract

The application relates to a separable gas branch joint, which belongs to the field of electrical technology, including a gas bin and a frame for supporting the gas bin, a plurality of GIS terminals are arranged on the frame, a contact seat is arranged at the end of the GIS terminal, one end of the GIS terminal with the contact seat passes through the frame and is embedded in the gas bin, a test terminal female head is arranged on the gas bin, a fixed conductor is arranged at the end of the test terminal female head facing the gas bin, the end of the fixed conductor away from the test terminal female head extends into the gas bin, a plurality of sliding conductors are slidably connected to the fixed conductor, a driving control component for controlling the sliding of the sliding conductor is arranged on the gas bin, and the sliding conductor can slide to contact or separate with the contact seat under the action of the driving control component; a plurality of grounding pull rods are also slidably connected to the gas bin, and the grounding pull rods contact or separate with the contact seat after sliding. The application has the effect of reducing the losses caused to the relevant units when a branch line fails.

Description

Technical Field

[0001] The present application relates to the technical field of electricity, and in particular to a detachable gas branch connector. Background Art

[0002] The cable branch joint can realize two or even more branch lines from one line. The cable branch structure generally uses a gas-type branch joint, which is a gas-insulated one. Through three sets of GIS terminals, three lines can be introduced, one incoming line and two outgoing lines, thereby realizing the branch power supply of the transmission line. In addition, according to needs, the function of one inlet and one outlet plus a reserved loop can be realized, and the reserved loop can be equipped with a line when needed.

[0003] The commonly used pneumatic branch joints in the prior art usually connect all the high-voltage end conductors of three sets of DIS terminals together. When one of the branch lines fails, all three lines need to be shut down and wait. After the line repair is completed, a work withstand voltage test is required on site. During the test, the male head of the corresponding GIS terminal must be unplugged and embedded in the test equipment. After the test passes, the unplugged male head is plugged back into the female head of the corresponding GIS terminal. After re-grounding and sealing, the normal operation of all lines can be restored. This will affect the operation of the normal lines and cause certain impacts and losses to related units. Summary of the invention

[0004] In order to reduce the losses caused to related units when a branch line fails, the present application provides a detachable gas branch connector.

[0005] The present application provides a separable gas branch joint adopting the following technical solution:

[0006] A separable gas branch joint comprises a gas bin and a frame for supporting the gas bin, the frame is provided with a plurality of GIS terminals, the ends of the GIS terminals are provided with contact seats, one end of the GIS terminals provided with the contact seats passes through the frame and is embedded in the gas bin, the gas bin is provided with a test terminal female head, and sealing rings are used to seal between the GIS terminal and the gas bin, and between the test terminal female head and the gas bin;

[0007] A fixed conductor is provided at one end of the test terminal female head facing the gas chamber, and the fixed conductor extends into the gas chamber at one end away from the test terminal female head. A plurality of sliding conductors are slidably connected to the fixed conductor, and the sliding conductors correspond to GIS terminals one by one. A driving control component for controlling the sliding of the sliding conductors is provided on the gas chamber, and the sliding conductors can slide to contact or separate from the contact seat under the action of the driving control component.

[0008] The gas bin is also slidably connected to a plurality of grounding rods, the grounding rods correspond one to one to the GIS terminals, the grounding rods contact or separate with the contact seats after sliding, and the gas bin is provided with a grounding sealing locking assembly for locking the sliding of the grounding rods.

[0009] By adopting the above technical solution and setting the test terminal female head, on the one hand, in the case where there is no external high-voltage lead wire connected, it is possible to quickly implement the on-site power frequency withstand voltage test without the help of external equipment and without disassembling the cable terminal. On the other hand, when a branch line fails, the specific fault location can be found by inputting voltage from the test terminal female head.

[0010] By setting the sliding of the sliding conductor, the sliding conductor can be controlled by the driving control component to slide to contact or separate with the corresponding contact seat, so as to realize the connection or disconnection of the branch cable line. The branch line can be independently tested for on-site power frequency withstand voltage without the help of external test equipment, and when one of the branch lines fails, it can be quickly separated from the working line, thereby minimizing the loss caused to the relevant units when the branch line fails;

[0011] By setting the grounding rod, when conducting on-site power frequency tests, the grounding rod can be controlled to move to contact or separate from the contact seat, so that each branch line can be tested on site independently; when one of the branch lines fails, in order not to affect the normal operation of other lines, the sliding conductor can be moved to separate from the corresponding contact seat and the grounding rod can be moved to contact with the corresponding contact seat, that is, the faulty line can be repaired without affecting the normal operation of other lines, and the repair work of the faulty line is completed.

[0012] Preferably, the drive control component includes a metal pull rod slidably arranged on the gas bin, the metal pull rod is connected to the sliding conductor and the metal pull rod and the sliding conductor are coaxially arranged, a cover plate is provided on the gas bin, a sealing ring is used to seal the cover plate and the gas bin, a sliding through hole for the metal pull rod to slide is opened on the cover plate, a skeleton sealing assembly corresponding to the sliding through hole is also provided on the cover plate, and a driving member for controlling the sliding of the metal pull rod is provided on the gas bin.

[0013] By adopting the above technical solution, with the cooperation of the sealing ring and the skeleton sealing assembly, the sealing performance of the gas chamber is effectively guaranteed, and the sliding of the sliding conductor can be controlled by controlling the sliding of the metal pull rod through the driving member.

[0014] Preferably, the grounding sealing locking assembly includes a control block arranged on the gas bin, the control block is provided with a grounding through hole for the sliding of a grounding pull rod, a sealing ring is used to seal the control block and the gas bin, a sealing block is provided in the control block, the grounding pull rod is provided with an external thread, the sealing block is provided with a threaded hole matching the external thread, and the threaded hole is connected to the grounding through hole.

[0015] By adopting the above technical scheme, the threaded hole and the external thread are matched, and when the grounding rod rotates, the grounding rod can be displaced relative to the control block under the action of the threaded transmission. On the one hand, it is convenient to control the sliding of the grounding rod, and the thread has a self-locking function, which can lock the sliding of the grounding rod. On the other hand, the thread has a sealing effect, and its principle mainly relies on the close fit and friction between the external thread and the threaded hole to achieve the sealing effect, which effectively ensures the sealing of the gas chamber.

[0016] Preferably, the driving member includes a control rack slidably connected to the control block, the sealing block is provided with a control gear meshing with the control rack, the sealing block is rotatably arranged in the control block, and part of the control gear is located outside the sealing block, a guide slider is provided on the inner wall of the grounding through hole, and a guide slide groove cooperating with the guide slider is provided on the grounding pull rod, and the guide slide groove is arranged along the length direction of the grounding pull rod;

[0017] The end of the control rack away from the sealing block passes through the cover plate, and the end of the metal pull rod away from the sliding conductor is provided with a connecting block. The control rack is connected to the connecting block. When the sealing block rotates until the grounding pull rod slides toward the GIS terminal, the control rack drives the sliding conductor to slide in the direction away from the GIS terminal.

[0018] By adopting the above technical solution, the slider can cooperate with the guide groove to limit the rotation of the grounding pull rod. Then, when the control gear rotates, the grounding pull rod moves relative to the control block under the action of the threaded transmission on the one hand, and is not easy to rotate relative to the control block in the other direction due to the cooperation of the guide groove and the guide slider, thereby improving the sliding stability of the grounding pull rod; with the cooperation of the control gear and the control rack, the sliding of the connecting block can drive the sliding of the control rack, without the need for additional operation and additional driving source, thereby facilitating the control of the contact or separation between the sliding conductor and the grounding pull rod and the contact seat.

[0019] Preferably, an identification piece is provided on the gear teeth of the control gear, and the identification piece includes a first identification piece, a second identification piece and a third identification piece, and an arrow matching the identification piece is provided on the sealing block, and the second identification piece is located between the first identification piece and the third identification piece, and when the control gear rotates to the point where the first identification piece corresponds to the arrow, the sliding conductor contacts the contact seat and the grounding pull rod is separated from the contact seat, when the control gear rotates to the point where the second identification piece corresponds to the arrow, the sliding conductor and the grounding pull rod are both separated from the contact seat, and when the control gear rotates to the point where the third identification piece corresponds to the arrow, the grounding pull rod contacts the contact seat and the sliding conductor is separated from the contact seat;

[0020] The connecting block is provided with a control slot for the control rack to slide, the connecting plate is provided with a limit block for closing the control slot, the cover plate is provided with a control elastic member, the connecting block moves toward the cover plate under the action of the control elastic member until the control rack is pressed against the limit block, when the limit block slides to release the restriction on the control slot, the sliding conductor can maintain contact with the contact seat under the action of the control elastic member, and when the control gear rotates to the third mark corresponding to the arrow, the grounding pull rod and the sliding conductor are both in contact with the contact seat.

[0021] By adopting the above technical scheme, with the cooperation of the identification part and the arrow, it is easy to judge the rotation angle of the control gear, thereby facilitating the judgment of the state of the gas branch joint. By controlling the rotation of the gear and the sliding of the limit block, the contact and separation of the sliding conductor, the grounding rod and the contact seat can be controlled, which further facilitates the control of the gas branch joint to switch to different states, thereby facilitating the use of the gas branch joint.

[0022] Preferably, a locking column is slidably connected to the cover plate, a locking slide groove for sliding the locking column is provided on the cover plate, the locking slide groove is communicated with the control slide groove, a locking groove for engaging the locking column is provided on the gas bin, and a locking elastic member for controlling the locking column to be received in the locking slide groove is provided on the cover plate;

[0023] A clearance groove is provided on the control rack. When the control gear rotates to a second mark corresponding to the arrow, the clearance groove is connected to the locking slide groove. The locking column can slide down and be accommodated in the cover plate under the action of the control spring. The clearance groove is arranged in a trapezoidal shape and a ball is connected to the locking column to rotate toward one end of the control rack.

[0024] By adopting the above technical solution, when any sliding conductor or grounding pull rod contacts the contact seat, it means that the gas branch connector is still in use. At this time, the arrow on the control block is misaligned with the second mark, and the give-way groove is misaligned with the locking groove. The locking column is embedded in the locking groove. At this time, the cover plate is not easy to move to separate from the gas bin, and it is not easy to remove the seal of the cover plate on the gas bin, which improves the safety of using the gas branch connector; the give-way groove is set in a trapezoidal shape, which makes it easy to control the rack to slide to the locking column and the outer wall of the control rack to be tightly pressed. At this time, the locking block is located in the locking groove, and the locking block cooperates with the locking groove to fix the cover plate and the gas bin.

[0025] Preferably, the gas bin is also provided with a dust cover, and the cover plate is located inside the dust cover.

[0026] By adopting the above technical solution and setting the dust cover, dust and impurities from the outside are not easy to fall on the cover plate, thereby effectively ensuring the sealing of the gas warehouse.

[0027] Preferably, the gas bin is also provided with an inflation valve and a pressure gauge, and the air outlet of the inflation valve is connected to the air inlet of the pressure gauge.

[0028] By adopting the above technical solution, insulating gas can be injected into the gas bin through the inflation valve. During this process, the pressure change in the gas bin can be monitored in real time through the setting of the pressure gauge. When the pressure value in the gas bin reaches the specified value, the gas injection is completed, which is convenient for judging the change in the insulating gas pressure in the gas bin.

[0029] Preferably, the sliding conductor includes a main body and a limiting portion, the fixed conductor is penetrated by a fixed through hole for the main body to slide, the limiting portion is located at one end of the main body away from the GIS terminal, and the outer diameter of the limiting portion is larger than the inner diameter of the fixing through hole.

[0030] By adopting the above technical solution and setting the limiting part, if the sliding conductor is separated from the drive control component, the sliding conductor is not easy to move to be separated from the fixed conductor under the action of its own gravity, thereby ensuring the normal operation of the circuit.

[0031] Preferably, an insulating cone is detachably connected to the female connector of the test terminal.

[0032] By adopting the above technical solution and setting the insulating cone, the electric field inside and outside the electrical equipment can be effectively isolated to ensure the safe operation of the equipment.

[0033] In summary, the present application includes at least one of the following beneficial technical effects:

[0034] 1. Through the setting of the test terminal female head, on the one hand, in the absence of external high-voltage lead access, the on-site power frequency withstand voltage test can be quickly realized without the help of external equipment and without disassembling the cable terminal. On the other hand, when a branch line fails, the specific fault location can be found by inputting voltage from the test terminal female head;

[0035] 2. Through the setting of sliding conductor sliding, the sliding conductor can be controlled by the driving control component to slide to contact or separate with the corresponding contact seat, so as to realize the connection or disconnection of the branch cable line. Then, the branch line can be independently tested for on-site power frequency withstand voltage without the help of external test equipment, and when one of the branch lines fails, it can be quickly separated from the working line, thereby minimizing the loss caused to the relevant units when the branch line fails;

[0036] 3. Through the setting of the grounding rod, when conducting on-site power frequency tests, the grounding rod can be controlled to move to contact or separate from the contact seat, so that each branch line can be tested on site independently; when one of the branch lines fails, in order not to affect the normal operation of other lines, the sliding conductor can be moved to separate from the corresponding contact seat and the grounding rod can be moved to contact with the corresponding contact seat, that is, the faulty line can be repaired without affecting the normal operation of other lines, and the repair work of the faulty line is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0038] Figure 2 It is a schematic diagram of the structure when there is no high-voltage lead wire connected in the first embodiment of the present application.

[0039] Figure 3 It is a schematic diagram of the structure when a high voltage lead is connected in the first embodiment of the present application.

[0040] Figure 4 This is a top view without the cover plate in Example 1 of the present application.

[0041] Figure 5 This is a structural diagram when the arrow points to the first mark in Example 2 of the present application.

[0042] Figure 6 This is a structural diagram when the arrow points to the second mark in Example 2 of the present application.

[0043] Figure 7 This is a structural diagram when the arrow points to the third mark in Example 2 of the present application.

[0044] Figure 8It is a structural schematic diagram when the sliding conductor and the grounding pull rod are both in contact with the contact seat in the second embodiment of the present application.

[0045] Fig. 9 yes Figure 7 Enlarged view of part A in .

[0046] Fig.10 It is a cross-sectional view of the control block in the second embodiment of the present application.

[0047] Fig.11 It is a structural diagram of the control block in the second embodiment of the present application.

[0048] Description of reference numerals: 1. gas chamber; 11. female test terminal; 111. insulating cone; 112. male test terminal; 12. inflatable valve; 121. pressure gauge; 13. fixed conductor; 131. fixed through hole; 14. sliding conductor; 141. main body; 142. limiter; 143. metal pull rod; 15. grounding pull rod; 16. cover plate; 161. sliding through hole; 162. skeleton seal assembly; 163. control spring; 17. drive Cylinder; 18. Dust cover; 19. Locking groove; 191. Locking spring; 2. Frame; 3. GIS terminal; 31. Contact seat; 4. Control block; 41. Grounding through hole; 42. Sealing block; 421. Control gear; 422. First mark; 423. Second mark; 424. Third mark; 43. Control rack; 431. Give way groove; 44. Arrow; 5. Connecting block; 51. Control slide groove; 52. Limit block; 6. Locking column; 7. Sealing ring. DETAILED DESCRIPTION

[0049] The following is combined with Figure 1-11 This application is described in further detail.

[0050] Embodiment 1: Embodiment 1 of the present application discloses a separable gas branch joint, referring to Figure 1 and Figure 2 , including a gas bunker 1 and a frame 2 for supporting the gas bunker 1, a plurality of GIS terminals 3 are fixedly arranged on the frame 2, the GIS terminals 3 are fixed to the frame 2 by bolts, the number of GIS terminals 3 may depend on the actual situation, in the embodiment of the present application, three sets of GIS terminals 3 are selected as an example, the three sets of GIS terminals 3 are arranged in a circular array with the axis of the gas bunker 1 as the center, a contact seat 31 is provided at the end of the GIS terminal 3, the contact seat 31 is fixed to the GIS terminal 3 by bolts, it should be noted that before the contact seat 31 is fixed to the GIS terminal 3, the contact seat 31 and the GIS terminal 3 need to be cleaned first to ensure that the contact surfaces of the two are clean, so as to improve the conductivity and mechanical strength of the connection.

[0051] Reference Figure 1 and Figure 2After the GIS terminal 3 is assembled according to the cable accessories installation process, the end of the GIS terminal 3 with the contact seat 31 is inserted through the frame 2 into the gas chamber 1, and the GIS terminal 3 is fixed to the frame 2 by bolts to complete the assembly of the GIS terminal 3. The gas chamber 1 is also fixedly connected with a test terminal female head 11, which is fixed to the gas chamber 1 by bolts. Through the setting of the test terminal female head 11, on the one hand, in the absence of external high-voltage lead access, it is possible to quickly implement the on-site power frequency withstand voltage test without the help of external equipment or the need to disassemble the cable terminal; on the other hand, when a branch line fails, the specific fault location can be found by inputting voltage (DC, AC, shock wave, lightning impulse) from the test terminal female head 11.

[0052] Reference Figure 1 and Figure 3 The test terminal female head 11 is detachably connected with an insulating cone 111. When conducting an on-site power frequency withstand voltage test, when a high-voltage lead can be connected to the test circuit, the insulating cone 111 is installed in the test terminal female head 11; when no high-voltage lead can be connected to the test circuit, the insulating cone 111 can be replaced with a test terminal male head 112. The test terminal male head 112 used in this application can be pre-installed according to the process requirements and can be directly paired with the test terminal female head 11 on site. Through the setting of the insulating cone 111, the electric field inside and outside the electrical equipment can be effectively isolated to ensure the safe operation of the equipment.

[0053] Reference Figure 1 The side wall of the gas bin 1 is fixedly connected with an inflation valve 12 and a pressure gauge 121. The outlet of the inflation valve 12 is connected to the inlet of the pressure gauge 121. The insulating gas can be injected into the gas bin 1 through the inflation valve 12. The insulating gas can be a mixture of nitrogen or SF6 or both. During this process, the pressure change in the gas bin 1 can be monitored in real time through the setting of the pressure gauge 121. When the pressure value in the gas bin 1 reaches the specified value, the gas injection is completed. The pressure value is called the rated density or minimum functional density of the insulating gas, which directly affects the performance and safety of the gas branch joint. If the pressure of the insulating gas is lower than the specified minimum functional density, the rated characteristics of the gas branch joint cannot be guaranteed, and timely gas replenishment is required to ensure the normal use of the gas branch joint.

[0054] Reference Figure 3 and Figure 4, sealing rings 7 are used to seal between the GIS terminal 3 and the gas bin 1, and between the test terminal female connector 11 and the gas bin 1. The setting of the sealing ring 7 effectively ensures the air tightness of the gas bin 1. A fixed conductor 13 is fixedly arranged at one end of the test terminal female connector 11 facing the gas bin 1. The fixed conductor 13 is fixed to the GIS terminal 3 by bolts, and the fixed conductor 13 extends into the gas bin 1 at one end away from the test terminal. A plurality of sliding conductors 14 are slidably connected to the fixed conductor 13, and the number of sliding conductors 14 is consistent with the number of sets of GIS terminals 3. Therefore, in the embodiment of the present application, there are three sliding conductors 14, and the sliding conductors 14 correspond one to one with the GIS terminals 3. A driving control component for controlling the sliding of the sliding conductor 14 is provided on the gas bin 1. The sliding conductor 14 can slide to contact or separate with the contact seat 31 under the action of the driving control component.

[0055] By setting the sliding movement of the sliding conductor 14, the sliding conductor 14 can be controlled by the driving control component to slide to contact or separate from the corresponding contact seat 31, thereby realizing the connection or disconnection of the branch cable line. The branch line can be subjected to an on-site power frequency withstand voltage test independently without the aid of external test equipment, and when one of the branch lines fails, it can be quickly separated from the working line, thereby minimizing the losses caused to related units when the branch line fails.

[0056] Reference Figure 1 and Figure 2 The sliding conductor 14 includes a main body 141 and a limiting part 142. The main body 141 and the limiting part 142 are coaxially arranged. A fixed through hole 131 for the main body 141 to slide is provided on the fixed conductor 13. The limiting part 142 is located at the end of the main body 141 away from the GIS terminal 3. The outer diameter of the limiting part 142 is larger than the inner diameter of the fixed through hole 131. Through the setting of the limiting part 142, if the sliding conductor 14 is separated from the drive control component, the sliding conductor 14 is not easy to move to separate from the fixed conductor 13 under the action of its own gravity, thereby ensuring the normal operation of the line.

[0057] Reference Figure 3 and Figure 4 A plurality of grounding rods 15 are slidably connected to the gas bin 1, and the number of the grounding rods 15 is consistent with the number of sets of the GIS terminals 3. Therefore, in the embodiment of the present application, there are three grounding rods 15, and the grounding rods 15 correspond to the GIS terminals 3 one by one. After sliding, the grounding rods 15 contact or separate from the contact seat 31. The gas bin 1 is provided with a grounding sealing locking assembly for locking the sliding of the grounding rods 15. Through the setting of the grounding sealing locking assembly, on the one hand, the sealing of the gas bin 1 is guaranteed, and on the other hand, the movement of the grounding rods 15 can be locked, so that the grounding rods 15 are not easily moved under the action of other external forces.

[0058] By setting the grounding rod 15, when conducting on-site power frequency tests, the grounding rod 15 can be controlled to move to contact or separate from the contact seat 31, so that each branch line can be independently tested on site; when one of the branch lines fails, in order not to affect the normal operation of other lines, the sliding conductor 14 can be moved to separate from the corresponding contact seat 31, and the grounding rod 15 can be moved to contact with the corresponding contact seat 31, that is, the faulty line can be repaired without affecting the normal operation of other lines. After the repair work of the faulty line is completed, the test can be carried out according to the method of on-site power frequency withstand voltage test. After the test is completed, the normal working state can be restored, which effectively reduces the losses caused to related units when branch line failures occur.

[0059] Reference Figure 1 , Figure 2 and Figure 3 The grounding sealing locking assembly includes a control block 4 arranged on the gas bin 1, the control block 4 is fitted with the outer wall of the gas bin 1, and a grounding through hole 41 for the grounding pull rod 15 to slide is opened on the control block 4, and a sealing ring 7 is used to seal between the control block 4 and the gas bin 1, which effectively ensures the sealing of the gas bin 1, and a sealing block 42 is arranged in the control block 4. In the embodiment of the present application, the sealing block 42 is fixed to the control block 4, the grounding pull rod 15 is provided with an external thread, and the sealing block 42 is provided with a threaded hole matching the external thread, and the threaded hole is connected with the grounding through hole 41. Under the cooperation of the threaded hole and the external thread, when the grounding pull rod 15 rotates, the grounding pull rod 15 can be displaced relative to the control block 4 under the action of the threaded transmission, which is convenient for controlling the sliding of the grounding pull rod 15 on the one hand, and the thread has a self-locking function, which can lock the sliding of the grounding pull rod 15, and on the other hand, the thread has a sealing effect, and its principle mainly relies on the close fit and friction between the external thread and the threaded hole to achieve the sealing effect, which effectively ensures the sealing of the gas bin 1.

[0060] Reference Figure 1 , Figure 2 and Figure 3 The drive control component includes a metal pull rod 143 slidably arranged on the gas bin 1. The metal pull rod 143 is coaxially arranged with the sliding conductor 14, and the metal pull rod 143 is fixed to the sliding conductor 14 by bolts. A cover plate 16 is provided on the gas bin 1. The cover plate 16 and the gas bin 1 are sealed with a sealing ring 7. A sliding through hole 161 for the metal pull rod 143 to slide is opened on the cover plate 16. A skeleton sealing assembly 162 corresponding to the sliding through hole 161 is fixed on the cover plate 16. With the cooperation of the sealing ring 7 and the skeleton sealing assembly 162, the sealing performance of the gas bin 1 is effectively guaranteed.

[0061] Reference Figure 1 , Figure 2 and Figure 3The gas chamber 1 is provided with a driving member for controlling the sliding movement of the metal pull rod 143. In the embodiment of the present application, the driving member includes a driving cylinder 17 arranged on the cover plate 16. The end of the metal pull rod 143 away from the sliding conductor 14 is fixed to the piston rod of the driving cylinder 17, and the sliding movement of the sliding conductor 14 can be controlled by the driving cylinder 17.

[0062] Reference Figure 1 , Figure 2 and Figure 3 Although the cover plate 16 and the gas bin 1 are sealed by the sealing ring 7, and the sliding through hole 161 on the cover plate 16 for the metal pull rod 143 to slide is sealed by the skeleton sealing assembly 162, there is still a certain probability that smaller dust and impurities will accumulate in the sealed gap, which may affect the sealing performance of the gas bin 1. Therefore, a dust cover 18 is also provided on the gas bin 1. Through the setting of the dust cover 18, external dust and impurities are not easy to fall on the cover plate 16, thereby effectively ensuring the sealing performance of the gas bin 1.

[0063] The implementation principle of a disconnectable gas-type branch connector mentioned in Example 1 of the present application is as follows: when conducting an on-site power frequency test, if the tested line has a high-voltage lead that can be connected, the insulating cone 111 is installed in the test terminal female head 11, and then the driving cylinder 17 drives the sliding conductor 14 to slide to contact or separate from the corresponding contact seat 31, and at the same time controls the grounding pull rod 15 to move to contact or separate from the contact seat 31, so that each branch line can be independently tested on site; when the test line has no high-voltage lead that can be connected, the insulating cone 111 can be replaced with the test terminal male head 112, and the remaining operations are the same. When the tests are passed, the sliding conductor 14 is moved to contact with the contact seat 31, and the grounding pull rod 15 is moved to separate from the contact seat 31, and the gas-type branch connector is restored to normal working state.

[0064] When one of the branch lines fails, in order not to affect the normal operation of other lines, the sliding conductor 14 can be moved to separate from the corresponding contact seat 31 and the grounding rod 15 can be moved to contact with the corresponding contact seat 31, that is, the faulty line can be repaired without affecting the normal operation of other lines. After the emergency repair work of the faulty line is completed, it can be tested according to the method of on-site power frequency withstand voltage test, and the normal working state can be restored after the test is completed.

[0065] Embodiment 2: The difference from Embodiment 1 is that, referring to Figure 5 , Figure 6 , Figure 7 and Figure 8The driving member includes a control rack 43 that is slidably connected to the control block 4, and a control gear 421 that meshes with the control rack 43 is integrally formed on the sealing block 42. The sealing block 42 is rotatably arranged in the control block 4, and part of the control gear 421 is located outside the sealing block 42. The rotation of the sealing block 42 can be controlled by the part of the control gear 421 located outside the sealing block 42; a guide slider is integrally formed on the inner wall of the grounding through hole 41, and a guide slide groove that cooperates with the guide slider is provided on the grounding pull rod 15. The guide slide groove is arranged along the length direction of the grounding pull rod 15, and the guide slide can cooperate with the guide slide groove to limit the rotation of the grounding pull rod 15. When the control gear 421 rotates, the grounding pull rod 15 moves relative to the control block 4 under the action of the threaded transmission on the one hand, and is not easy to rotate relative to the control block 4 in the other direction under the cooperation of the guide slide groove and the guide slide, thereby improving the sliding stability of the grounding pull rod 15.

[0066] Reference Figure 7 The control rack 43 passes through the control block 4 and the end of the control rack 43 away from the control block 4 passes through the cover plate 16. A connecting block 5 is fixedly arranged at one end of the metal pull rod 143 away from the sliding conductor 14. The connecting block 5 can be fixed to the metal pull rod 143 by bolts. A control slide groove 51 for sliding the control rack 43 is opened on the connecting block 5. A limit block 52 for closing the control slide groove 51 is provided on the connecting block 5. The sliding of the limit block 52 can be manually controlled. A control elastic member is provided on the cover plate 16. In the embodiment of the present application, the control elastic member is a control spring 163. One end of the control spring 163 is fixed to the cover plate 16, and the other end of the control spring 163 is pressed against the connecting block 5. The connecting block 5 can move toward the cover plate 16 under the action of the control spring 163. When the limit block 52 slides to the closed control slide groove 51, the connecting block 5 can move toward the cover plate 16 under the action of the control spring 163 until the control rack 43 and the limit block 52 are pressed against each other.

[0067] The rotation direction of the external thread is limited so that when the control rack 43 slides in the direction away from the frame body 2 under the action of the gear transmission, the connecting block 5 can synchronously slide in the direction away from the frame body 2 under the action of the control rack 43; when the control rack 43 slides toward the frame body 2 under the action of the gear transmission, the connecting block 5 slides toward the cover plate 16 under the action of the control spring 163; the sliding of the connecting block 5 can drive the control rack 43 to slide, without the need for additional operation and additional driving source, thereby facilitating the control of the contact or separation between the sliding conductor 14 and the grounding pull rod 15 and the contact seat 31.

[0068] Reference Fig.10 and Fig.11, an identification piece is provided on the gear teeth of the control gear 421, and the identification piece includes a first identification piece 422, a second identification piece 423 and a third identification piece 424. An arrow 44 cooperating with the identification piece is fixedly provided on the sealing block 42, and the arrow 44 can be set on the sealing block 42 by engraving or pasting. The second identification piece 423 is located between the first identification piece 422 and the third identification piece 424. When the control gear 421 rotates to the point where the first identification piece 422 corresponds to the arrow 44, the sliding conductor 14 contacts the contact seat 31 and the grounding pull rod 15 separates from the contact seat 31. When the control gear 421 rotates to the point where the second identification piece 423 corresponds to the arrow 44, the sliding conductor 14 and the grounding pull rod 15 are both separated from the contact seat 31. When the control gear 421 rotates to the point where the third identification piece 424 corresponds to the arrow 44, the grounding pull rod 15 contacts the contact seat 31 and the sliding conductor 14 separates from the contact seat 31. With the cooperation of the identification piece and the arrow 44, it is convenient to judge the rotation angle of the control gear 421.

[0069] Reference Fig. 9 When the limit block 52 slides to release the restriction on the control slide groove 51, the sliding conductor 14 can maintain contact with the contact seat 31 under the action of the control spring 163. At this time, when the control gear 421 rotates to the third mark 424 corresponding to the arrow 44, the grounding pull rod 15 and the sliding conductor 14 are both in contact with the contact seat 31. Through the coordination of the rotation of the control gear 421 and the sliding of the limit block 52, the contact and separation of the sliding conductor 14, the grounding pull rod 15 and the contact seat 31 can be controlled, which further facilitates the control of the gas branch joint to switch to different states, thereby facilitating the use of the gas branch joint.

[0070] Reference Fig. 9 A locking column 6 is slidably connected to the cover plate 16, and a locking groove for sliding the locking column 6 is provided on the cover plate 16. A locking groove 19 for engaging the locking column 6 is provided on the gas bin 1. A locking elastic member for controlling the locking column 6 to be received in the locking groove is provided on the cover plate 16. In the embodiment of the present application, the locking elastic member is a locking spring 191, one end of the locking spring 191 is connected to the inner wall of the locking groove, and the other end of the locking spring 191 is connected to the locking column 6. A yield groove 431 is provided on the control rack 43. When the control gear 421 rotates to the second mark 423 corresponding to the arrow 44, the yield groove 431 is connected to the locking groove, and the locking column 6 can slide under the action of the control spring 163 to be received in the cover plate 16.

[0071] In addition to being fixed to the gas chamber 1 by bolts, the cover plate 16 is also fixed to the gas chamber 1 by a locking column 6. When any sliding conductor 14 or grounding rod 15 is in contact with the contact seat 31, it means that the gas branch connector is still in use. In this case, the cover plate 16 is not easy to move to separate from the gas chamber 1, and it is not easy to remove the seal of the cover plate 16 on the gas chamber 1, thereby improving the safety of using the gas branch connector.

[0072] Reference Fig. 9 The giving way groove 431 is arranged in a trapezoidal shape and a ball is connected to the locking column 6 for rotating toward one end of the control rack 43. The setting of the ball reduces the friction between the locking column 6 and the control rack 43. The giving way groove 431 is arranged in a trapezoidal shape, which facilitates the control rack 43 to slide to the locking column 6 and the outer wall of the control rack 43 to be tightly pressed. At this time, the locking column 6 is located in the locking groove 19, and the locking column 6 cooperates with the locking groove 19 to fix the cover plate 16 and the gas tank 1.

[0073] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A separable gas branch joint, characterized in that: The invention comprises a gas bin (1) and a frame (2) for supporting the gas bin (1), wherein the frame (2) is provided with a plurality of GIS terminals (3), the end of each GIS terminal (3) is provided with a contact seat (31), one end of each GIS terminal (3) provided with the contact seat (31) passes through the frame (2) and is embedded in the gas bin (1), and a test terminal female head (11) is provided on the gas bin (1), and sealing rings (7) are used to seal between the GIS terminal (3) and the gas bin (1), and between the test terminal female head (11) and the gas bin (1); A fixed conductor (13) is provided at one end of the test terminal female connector (11) facing the gas chamber (1), and an end of the fixed conductor (13) away from the test terminal female connector (11) extends into the gas chamber (1). A plurality of sliding conductors (14) are slidably connected to the fixed conductor (13), and the sliding conductors (14) correspond one to one with the GIS terminals (3). A driving control component for controlling the sliding of the sliding conductors (14) is provided on the gas chamber (1), and the sliding conductors (14) can slide to contact or separate from the contact seat (31) under the action of the driving control component. The gas chamber (1) is also slidably connected to a plurality of grounding rods (15), the grounding rods (15) corresponding one to one with the GIS terminals (3), the grounding rods (15) contact or separate from the contact seats (31) after sliding, and the gas chamber (1) is provided with a grounding sealing locking assembly for locking the grounding rods (15) to slide; The drive control component comprises a metal pull rod (143) slidably arranged on the gas bin (1), the metal pull rod (143) is connected to the sliding conductor (14) and the metal pull rod (143) and the sliding conductor (14) are coaxially arranged, the gas bin (1) is provided with a cover plate (16), the cover plate (16) and the gas bin (1) are sealed by a sealing ring (7), the cover plate (16) is provided with a sliding through hole (161) for the metal pull rod (143) to slide, the cover plate (16) is also provided with a skeleton sealing assembly (162) corresponding to the sliding through hole (161), and the gas bin (1) is provided with a driving member for controlling the sliding of the metal pull rod (143); The grounding sealing locking assembly comprises a control block (4) arranged on the gas chamber (1), the control block (4) is provided with a grounding through hole (41) for the grounding pull rod (15) to slide, the control block (4) and the gas chamber (1) are sealed by a sealing ring (7), a sealing block (42) is arranged inside the control block (4), the grounding pull rod (15) is provided with an external thread, the sealing block (42) is provided with a threaded hole matching the external thread, and the threaded hole is connected to the grounding through hole (41); The driving member comprises a control rack (43) slidably connected to the control block (4); the sealing block (42) is provided with a control gear (421) meshing with the control rack (43); the sealing block (42) is rotatably arranged in the control block (4); a part of the control gear (421) is located outside the sealing block (42); a guide slide block is arranged on the inner wall of the grounding through hole (41); a guide slide groove cooperating with the guide slide block is provided on the grounding pull rod (15); and the guide slide groove is arranged along the length direction of the grounding pull rod (15); The end of the control rack (43) away from the sealing block (42) passes through the cover plate (16), and the end of the metal pull rod (143) away from the sliding conductor (14) is provided with a connecting block (5), and the control rack (43) is connected to the connecting block (5). When the sealing block (42) rotates until the grounding pull rod (15) slides toward the GIS terminal (3), the control rack (43) drives the sliding conductor (14) to slide in a direction away from the GIS terminal (3); The gear teeth of the control gear (421) are provided with identification pieces, the identification pieces comprising a first identification piece (422), a second identification piece (423) and a third identification piece (424); the sealing block (42) is provided with an arrow (44) that matches the identification piece; the second identification piece (423) is located between the first identification piece (422) and the third identification piece (424); when the control gear (421) rotates until the first identification piece (422) corresponds to the arrow (44), the sliding conductor (14) and the The contact seat (31) contacts and the grounding pull rod (15) separates from the contact seat (31); when the control gear (421) rotates to a second mark (423) corresponding to the arrow (44), the sliding conductor (14) and the grounding pull rod (15) are both separated from the contact seat (31); when the control gear (421) rotates to a third mark (424) corresponding to the arrow (44), the grounding pull rod (15) contacts the contact seat (31) and the sliding conductor (14) separates from the contact seat (31); The connecting block (5) is provided with a control slot (51) for the control rack (43) to slide, and the connecting block is provided with a limit block (52) for closing the control slot (51). The cover plate (16) is provided with a control elastic member. Under the action of the control elastic member, the connecting block (5) moves toward the cover plate (16) until the control rack (43) and the limit block (52) are pressed against each other. When the limit block (52) slides to release the restriction on the control slot (51), the sliding conductor (14) can maintain a contact state with the contact seat (31) under the action of the control elastic member. When the control gear (421) rotates to a third mark (424) corresponding to the arrow (44), the grounding pull rod (15) and the sliding conductor (14) are both in contact with the contact seat (31).

2. The separable gas branch joint according to claim 1, characterized in that: The cover plate (16) is slidably connected with a locking column (6), the cover plate (16) is provided with a locking slide groove for sliding the locking column (6), the locking slide groove is communicated with the control slide groove (51), the gas chamber (1) is provided with a locking groove (19) for the locking column (6) to be engaged, and the cover plate (16) is provided with a locking elastic member for controlling the locking column (6) to be received in the locking slide groove; The control rack (43) is provided with a clearance groove (431). When the control gear (421) rotates to a position where the second mark (423) corresponds to the arrow (44), the clearance groove (431) is connected to the locking slide groove. The locking column (6) can slide down to be accommodated in the cover plate (16) under the action of the control spring (163). The clearance groove (431) is arranged in a trapezoidal shape and a ball is connected to one end of the locking column (6) that is rotatable toward the control rack (43).

3. The separable gas branch joint according to claim 1, characterized in that: The gas bin (1) is also provided with a dust cover (18), and the cover plate (16) is located inside the dust cover (18).

4. The separable gas branch joint according to claim 1, characterized in that: The gas bin (1) is also provided with an air charging valve (12) and a pressure gauge (121), and the air outlet of the air charging valve (12) is connected to the air inlet of the pressure gauge (121).

5. The separable gas branch joint according to claim 1, characterized in that: The sliding conductor (14) comprises a main body (141) and a limiting portion (142); a fixing through hole (131) for the main body (141) to slide is formed through the fixed conductor (13); the limiting portion (142) is located at an end of the main body (141) away from the GIS terminal (3); and the outer diameter of the limiting portion (142) is greater than the inner diameter of the fixing through hole (131).

6. The separable gas branch joint according to claim 1, characterized in that: The test terminal female head (11) is detachably connected with an insulating cone (111).

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