CN114914090B - Megavoltage ceramic intermediate energy storage capacitor integrating voltage measurement function - Google Patents
Megavoltage ceramic intermediate energy storage capacitor integrating voltage measurement function Download PDFInfo
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- CN114914090B CN114914090B CN202210519762.7A CN202210519762A CN114914090B CN 114914090 B CN114914090 B CN 114914090B CN 202210519762 A CN202210519762 A CN 202210519762A CN 114914090 B CN114914090 B CN 114914090B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/38—Multiple capacitors, i.e. structural combinations of fixed capacitors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
- H01G4/12—Ceramic dielectrics
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/224—Housing; Encapsulation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/40—Structural combinations of fixed capacitors with other electric elements, the structure mainly consisting of a capacitor, e.g. RC combinations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
Abstract
The invention relates to a capacitor, in particular to a megavoltage ceramic intermediate energy storage capacitor integrating a voltage measurement function. The problems that an existing middle energy storage dry type film capacitor is complex in procedure, large in size and easy to damage and occupies a large space when a large resistor or a resistor-capacitor voltage divider is used for measuring high voltage are solved. The megavoltage ceramic intermediate energy storage capacitor integrating the voltage measurement function comprises: the device comprises a shell, N ceramic capacitor matrixes and a voltage measuring device, wherein N is more than or equal to 2; the N ceramic capacitor matrixes are sequentially connected end to form a series structure, and the low-voltage side of the series structure is connected with a voltage measuring device; the shell covers the connecting metal layer, the small resistor and the resistor insulating layer in the series structure and the voltage measuring device, is formed by casting insulating materials, realizes the integrated arrangement of the voltage measuring device and the megavoltage ceramic intermediate energy storage capacitor, and can measure the voltage of the capacitor in real time.
Description
Technical Field
The invention relates to a capacitor, in particular to a megavoltage ceramic intermediate energy storage capacitor integrating a voltage measurement function.
Background
The electromagnetic pulse simulator can generate high-energy electromagnetic waves and is an indispensable device in electromagnetic pulse effect and reinforcement technology tests. The large-scale megavoltage electromagnetic pulse simulation device generally uses a two-stage steeped pulse compression technology, and comprises a Marx generator, an intermediate energy storage section comprising an intermediate energy storage capacitor bank, a peaking section and an output switch. The single intermediate energy storage capacitor needs to bear megavoltage, the capacity value is generally from tens of picofarads to hundreds of picofarads, and the capacity value is adjusted according to different parameters of the electromagnetic pulse simulator. The middle energy storage capacitor used in the traditional large electromagnetic pulse simulation device is mostly a dry film capacitor, a capacitor element is formed by winding a plastic film and a metal foil in a clean room, and then hundreds of capacitor elements are assembled in series to form a capacitor. Meanwhile, a large resistor or a resistor-capacitor voltage divider is often used for measuring megavoltage fast pulse voltage, and an electromagnetic pulse simulation device requires low structural inductance and does not have enough space for placing the large voltage divider.
Disclosure of Invention
The invention aims to solve the problems that the existing intermediate energy storage dry type film capacitor is complex in manufacturing process, large in size and easy to damage, and the occupied space is large when a large resistor or a resistor-capacitor voltage divider is used for measuring high voltage, and provides a megavolt ceramic intermediate energy storage capacitor with an integrated voltage measuring function.
In order to achieve the above purpose, the technical solution provided by the present invention is as follows:
the utility model provides an energy storage capacitor in middle of megavoltage pottery of integrated voltage measurement function, includes shell, N ceramic capacitor base member and voltage measurement device, and wherein N is greater than or equal to 2, its special character lies in: the first to (N-1) th ceramic capacitor matrixes comprise a ceramic matrix, silver electrode layers connected to two sides of the ceramic matrix, an upper electrode column and a lower electrode column, wherein the silver electrode layers comprise a high-voltage side silver electrode layer and a low-voltage side silver electrode layer, the upper electrode column is connected to the high-voltage side silver electrode layer, and the lower electrode column is connected to the low-voltage side silver electrode layer; the N ceramic capacitor comprises a ceramic substrate, silver electrode layers connected to two sides of the ceramic substrate, an upper electrode column and a connecting metal layer, wherein the silver electrode layers comprise a high-voltage side silver electrode layer and a low-voltage side silver electrode layer, the upper electrode column is connected to the high-voltage side silver electrode layer, and the connecting metal layer is connected to the low-voltage side silver electrode layer; the N ceramic capacitor matrixes are sequentially connected with the upper electrode column through the lower electrode column to form a series structure, and the low-voltage side of the series structure is connected with a voltage measuring device; the voltage measuring device comprises a small resistor, a measuring connecting rod and a resistor insulating layer, wherein the small resistor is connected with a connecting metal layer (7) of an Nth ceramic capacitor matrix (104) in the N ceramic capacitor matrixes, the resistor insulating layer is arranged around the small resistor, a resistor measuring seat is fixed on the outer side end face of the small resistor, a cable connector is connected to the resistor measuring seat, a cavity is formed in the small resistor, a through hole I is formed in the inner side end face of the small resistor, which is close to the Nth ceramic capacitor matrix, the measuring connecting rod is positioned in the cavity, one end of the measuring connecting rod penetrates through the through hole I and is connected with the connecting metal layer of the Nth ceramic capacitor matrix, a through hole II is formed in the outer side end face of the small resistor, the bottom of the resistor measuring seat penetrates through the through hole II and is connected with the other end of the measuring connecting rod, and the outer side end of the small resistor is grounded; the shell is formed by casting an insulating material and covers the series structure, the small resistor and the resistor insulating layer.
Further, the end parts of the upper electrode column and the lower electrode column are provided with internal threaded holes, and the lower electrode columns and the upper electrode columns of adjacent ceramic capacitor matrixes in the N ceramic capacitor matrixes are mutually connected through connecting screws.
Further, a step-shaped base is arranged at the bottom of the resistance measuring seat, the step-shaped base is matched with the through hole, the resistance measuring seat is connected with the small resistor, the through hole II and the through hole I are coaxially arranged, and the step-shaped base is fixedly connected with the other end of the measuring connecting rod;
the outer side end surface of the small resistor is provided with a threaded hole, and the resistor measuring seat is fixed on the small resistor through a measuring seat fixing screw;
one side of the connecting metal layer, which is close to the small resistor, is provided with a threaded hole, one end of the measuring connecting rod is provided with an external thread, and the threaded hole of the connecting metal layer is connected.
Further, the two end surfaces of the shell are respectively provided with a high-pressure side fixed threaded sleeve and a low-pressure side fixed threaded sleeve.
Further, the upper electrode column at the high-voltage side of the first ceramic capacitor matrix is arranged in a protruding mode relative to the end face of the shell, and the end face of the other end of the shell is flush with the outer side end face of the small resistor.
The invention also provides a megavoltage ceramic intermediate energy storage capacitor integrating the voltage measurement function, which comprises a shell, N ceramic capacitor matrixes and a voltage measurement device, wherein N is more than or equal to 2, and is characterized in that:
the ceramic capacitor substrate comprises a ceramic substrate body, silver electrode layers, upper electrode columns and lower electrode columns, wherein the silver electrode layers are connected to two sides of the ceramic substrate body, each silver electrode layer comprises a high-voltage side silver electrode layer and a low-voltage side silver electrode layer, each upper electrode column is connected to the corresponding high-voltage side silver electrode layer, and each lower electrode column is connected to the corresponding low-voltage side silver electrode layer; the N ceramic capacitor matrixes are sequentially connected with the upper electrode column through the lower electrode column to form a series structure, and the low-voltage side of the series structure is connected with a voltage measuring device; the voltage measuring device comprises a small resistor, a measuring connecting rod and a resistor insulating layer, wherein the small resistor is connected with a lower electrode column of an Nth ceramic capacitor matrix in the N ceramic capacitor matrixes, the resistor insulating layer is arranged around the small resistor, a resistor measuring seat is fixed on the outer side end face of the small resistor, a cable connector is connected to the resistor measuring seat, a cavity is arranged in the small resistor, a through hole I is formed in the inner side end face of the small resistor, which is close to the Nth ceramic capacitor matrix, the measuring connecting rod is positioned in the cavity, one end of the measuring connecting rod penetrates through the through hole I and is connected with the lower electrode column of the Nth ceramic capacitor matrix, a through hole II is formed in the outer side end face of the small resistor, the bottom of the resistor measuring seat penetrates through the through hole II and is connected with the other end of the measuring connecting rod, and the outer side end of the small resistor is grounded; the shell is formed by casting an insulating material and covers the series structure, the small resistor and the resistor insulating layer.
Further, the end parts of the upper electrode column and the lower electrode column are provided with internal threaded holes, and the lower electrode columns and the upper electrode columns of adjacent ceramic capacitor matrixes in the N ceramic capacitor matrixes are mutually connected through connecting screws.
Further, a step-shaped base is arranged at the bottom of the resistance measuring seat, the step-shaped base is matched with the through hole, the resistance measuring seat is connected with the small resistor, the through hole II and the through hole I are coaxially arranged, and the step-shaped base is fixedly connected with the other end of the measuring connecting rod;
the outer side end surface of the small resistor is provided with a threaded hole, and the resistor measuring seat is fixed on the small resistor through a measuring seat fixing screw;
and one end of the measuring connecting rod is provided with an external thread, and the external thread is connected with an internal thread hole of the lower electrode column of the Nth ceramic capacitor matrix.
Further, the two end surfaces of the shell are respectively provided with a high-pressure side fixed threaded sleeve and a low-pressure side fixed threaded sleeve.
Further, the upper electrode column at the high-voltage side of the first ceramic capacitor matrix is arranged in a protruding mode relative to the end face of the shell, and the end face of the other end of the shell is flush with the outer side end face of the small resistor.
Compared with the prior art, the invention has the advantages that:
1. the invention adopts the ceramic capacitor matrix as the capacitor element with a series structure, and tens of capacitor elements can be equivalent to the capacitor element formed by winding hundreds of groups in the dry film capacitor, thereby realizing megavoltage bearing and hundred picofarad capacitance. Therefore, the invention has smaller volume and lighter weight under the same specification requirement.
2. According to the invention, the capacitor element is encapsulated by using the shell formed by casting the insulating material, so that the capacitor element is relatively independent from the external environment, metal particles or dust are difficult to enter the capacitor, and the risk of pollution damage of the capacitor when the capacitor is exposed in an engineering environment is reduced.
3. The invention integrates the voltage measuring device and the capacitor, realizes the real-time measurement of megavoltage fast pulse high voltage at two ends of the capacitor, and solves the problem of placing a large voltage divider without space.
4. According to the invention, the metal threaded sleeves are pre-embedded at both sides of the capacitor shell, so that the subsequent assembly is easy; the ceramic capacitor matrixes are connected by using connecting screws, and the serial connection procedure is simple and convenient.
5. The ceramic capacitor matrix used in the invention can be a small ceramic capacitor which is produced in a commercial quantity, and has the advantages of convenient purchase and lower cost.
Drawings
FIG. 1 is a schematic view (cross-sectional view) of a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a ceramic capacitor substrate according to a first embodiment of the present invention;
FIG. 3 is a left side view of FIG. 1;
FIG. 4 is a right side view of FIG. 1;
reference numerals illustrate:
104-ceramic capacitor matrix, 1-upper electrode column, 2-ceramic matrix, 3-silver electrode layer, 31-high voltage side silver electrode layer, 32-low voltage side silver electrode layer, 4-lower electrode column, 5-connecting screw, 6-shell, 7-connecting metal layer, 8-measuring connecting rod, 9-resistor insulating layer, 10-small resistor, 11-resistor measuring seat, 12-cable connector, 13-low voltage side fixed threaded sleeve, 14-measuring seat fixed screw, 15-high voltage side fixed threaded sleeve.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
example 1
The invention relates to a megavoltage ceramic intermediate energy storage capacitor integrating voltage measurement function, which is shown in figures 1 to 4, and comprises a shell 6, N ceramic capacitor matrixes 104 and a voltage measurement device, wherein N is more than or equal to 2, the first to N-1 th ceramic capacitor matrixes 104 comprise a ceramic matrix 2, silver electrode layers 3 connected to two sides of the ceramic matrix 2, an upper electrode column 1 and a lower electrode column 4, the silver electrode layer 3 comprises a high-voltage side silver electrode layer 31 and a low-voltage side silver electrode layer 32, the upper electrode column 1 is connected to the high-voltage side silver electrode layer 31, and the lower electrode column 4 is connected to the low-voltage side silver electrode layer 32.
The nth ceramic capacitor substrate 104 comprises a ceramic substrate 2, silver electrode layers 3 connected to two sides of the ceramic substrate 2, an upper electrode column 1 and a connecting metal layer 7, wherein the silver electrode layers 3 comprise a high-voltage side silver electrode layer 31 and a low-voltage side silver electrode layer 32, the upper electrode column 1 is connected to the high-voltage side silver electrode layer 31, and the connecting metal layer 7 is connected to the low-voltage side silver electrode layer 32.
The ends of the upper electrode column 1 and the lower electrode column 4 are provided with internal threaded holes, the lower electrode columns 4 and the upper electrode column 1 of adjacent ceramic capacitor matrixes 104 in the N ceramic capacitor matrixes 104 are mutually connected through connecting screws 5 to form a series structure, and the connecting metal layer 7 of the Nth ceramic capacitor matrix 104 is connected with a voltage measuring device.
The voltage measuring device comprises a small resistor 10 and a measuring connecting rod 8 which are connected with a connecting metal layer 7 of an Nth ceramic capacitor matrix 104 in N ceramic capacitor matrixes 104, and a resistor insulating layer 9 which is arranged around the small resistor 10, wherein a resistor measuring seat 11 is fixed on the outer side end surface of the small resistor 10, a cable connector 12 is connected to the resistor measuring seat 11, a cavity is formed in the small resistor 10, a through hole I is formed in the inner side end surface of the small resistor, which is close to the Nth ceramic capacitor matrix 104, the measuring connecting rod 8 is arranged in the cavity, one end of the measuring connecting rod 8 is provided with external threads, one side of the connecting metal layer 7, which is close to the small resistor 10, is provided with a threaded hole, one end of the measuring connecting rod 8 penetrates through the through hole I and is connected with the threaded hole on one side of the connecting metal layer 7, the outer side end surface of the small resistor 10 is also provided with a threaded hole, and the resistor measuring seat 11 is fixed on the outer side end surface of the small resistor through a measuring seat fixing screw 14; the outer side end face of the small resistor 10 is provided with a second step-shaped through hole coaxial with the first through hole, the second through hole is matched with a step-shaped base of the resistor measuring seat 11, the step-shaped base is fixedly connected with the other end of the measuring connecting rod 8, and the outer side end of the small resistor 10 is grounded.
The shell 6 is formed by casting an insulating material and covers the series structure, the small resistor 10 and the resistor insulating layer 9, and a high-voltage side fixed threaded sleeve 15 and a low-voltage side fixed threaded sleeve 13 are respectively arranged at two end surfaces of the shell 6. The upper electrode column 1 on the high-voltage side of the first ceramic capacitor matrix 104 in the series structure is arranged in a protruding manner relative to the end face of the shell 6, and the end face of the other end of the shell 6 is flush with the outer end face of the small resistor 10.
The embodiment provided by the invention is used as an intermediate energy storage capacitor in a large-scale megavoltage electromagnetic pulse simulation device, the capacitor formed by a series structure formed by a plurality of ceramic capacitor matrixes 104 is fixedly connected with upstream and downstream equipment through a high-voltage side fixed threaded sleeve 15 and a low-voltage side fixed threaded sleeve 13, the capacitor can bear megavoltage, the capacitance reaches hundred picofarads, and meanwhile, the voltage measuring device which is integrally arranged can measure the voltage of the capacitor in real time, and the specific measuring method of the voltage is as follows:
measuring the high-voltage end potential of the connecting rod 8, namely the low-voltage end potential of N ceramic capacitor matrixes 104, and transmitting the high-voltage end potential to the cable core through the resistor measuring seat 11 and the cable connector 12 connected with the other end, wherein the low-voltage end of the small resistor 10 is connected with the outer layer of the cable and grounded, the real-time voltage difference value of the two ends of the small resistor 10 can be measured through the structure, the current value flowing through the small resistor 10 can be obtained through the ratio of the measured voltage difference value to the resistance value of the small resistor 10, namely the current value flowing through a capacitor, the capacitance of the N ceramic capacitor matrixes 104 can be measured through the connecting bridge, and the current (i), the voltage (u) and the capacitance (C) of the capacitor meet the following integral formula:
in the formula: u, the voltage of the capacitor, unit: volts (denoted by V); i, the current of the capacitor, unit: ampere (denoted by a); t, the energizing time of the capacitor, unit: seconds (denoted by s); c, the capacitance of the capacitor, in Farad (F).
And calculating to finally obtain the voltage value of the capacitor through the formula.
Example two
The megavoltage ceramic intermediate energy storage capacitor integrating the voltage measurement function replaces the connecting metal layer 7 of the Nth ceramic capacitor matrix 104 in the N ceramic capacitor matrixes 104 in the first embodiment with the lower electrode column 4, the lower electrode column 4 is connected to the low-voltage silver electrode layer 32, the small resistor 10 is sleeved on the lower electrode column 4 of the Nth ceramic capacitor matrix 104, one end of the measuring connecting rod 8 provided with external threads is directly connected to the internal threaded hole of the lower electrode column 4, other structures are the same as those in the first embodiment, and the measuring principle is the same as that in the first embodiment.
While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides an energy storage capacitor in middle of megavoltage pottery of integrated voltage measurement function, includes shell (6), N ceramic capacitor base member (104) and voltage measurement device, and wherein N is greater than or equal to 2, its characterized in that:
the first to N-1 th ceramic capacitor matrixes (104) comprise a ceramic matrix (2), silver electrode layers (3) connected to two sides of the ceramic matrix (2), an upper electrode column (1) and a lower electrode column (4), wherein the silver electrode layers (3) comprise a high-voltage side silver electrode layer (31) and a low-voltage side silver electrode layer (32), the upper electrode column (1) is connected to the high-voltage side silver electrode layer (31), and the lower electrode column (4) is connected to the low-voltage side silver electrode layer (32);
the N-th ceramic capacitor comprises a ceramic matrix (2), silver electrode layers (3) connected to two sides of the ceramic matrix (2), an upper electrode column (1) and a connecting metal layer (7), wherein the silver electrode layers (3) comprise a high-voltage side silver electrode layer (31) and a low-voltage side silver electrode layer (32), the upper electrode column (1) is connected to the high-voltage side silver electrode layer (31), and the connecting metal layer (7) is connected to the low-voltage side silver electrode layer (32);
the N ceramic capacitor matrixes (104) are sequentially connected with the upper electrode column (1) through the lower electrode column (4) to form a series structure, and the low-voltage side of the series structure is connected with a voltage measuring device;
the voltage measuring device comprises a small resistor (10) and a measuring connecting rod (8) which are connected with a connecting metal layer (7) of an Nth ceramic capacitor matrix (104) in N ceramic capacitor matrixes (104), and a resistor insulating layer (9) which is arranged around the small resistor (10), wherein a resistor measuring seat (11) is fixed on the outer side end surface of the small resistor (10), a cable connector (12) is connected to the resistor measuring seat (11), a cavity is arranged inside the small resistor (10), a through hole I is formed in the inner side end surface of the small resistor (10) close to the Nth ceramic capacitor matrix (104), the measuring connecting rod (8) is positioned in the cavity, one end of the measuring connecting rod (8) penetrates through the through hole I and is connected with the connecting metal layer (7) of the Nth ceramic capacitor matrix (104), a through hole II is formed in the outer side end surface of the small resistor (10), the bottom of the resistor measuring seat (11) penetrates through the through hole II and is connected with the other end of the measuring connecting rod (8), and the outer side end surface of the small resistor (10) is grounded;
the housing (6) is formed by casting an insulating material and covers the series structure, the small resistor (10) and the resistor insulating layer (9).
2. A megavoltage ceramic intermediate storage capacitor integrated with voltage measurement capability as defined in claim 1, wherein:
the ends of the upper electrode column (1) and the lower electrode column (4) are provided with internal threaded holes, and the lower electrode columns (4) of adjacent ceramic capacitor matrixes (104) in the N ceramic capacitor matrixes (104) are mutually connected with the upper electrode column (1) through connecting screws (5).
3. A megavoltage ceramic intermediate storage capacitor integrated with voltage measurement capability as defined in claim 2, wherein:
the bottom of the resistance measuring seat (11) is provided with a step-shaped base which is matched with the through hole, the resistance measuring seat (11) is connected with the small resistor (10), the through hole II is coaxially arranged with the through hole I, and the step-shaped base is fixedly connected with the other end of the measuring connecting rod (8);
the outer side end surface of the small resistor (10) is provided with a threaded hole, and the resistor measuring seat (11) is fixed on the small resistor (10) through a measuring seat fixing screw (14);
one side of the connecting metal layer (7) close to the small resistor (10) is provided with a threaded hole, one end of the measuring connecting rod (8) is provided with an external thread, and the threaded hole of the connecting metal layer (7) is connected.
4. A megavoltage ceramic intermediate energy storage capacitor integrating voltage measurement functions as defined in any one of claims 1-3, wherein:
the two end surfaces of the shell (6) are respectively provided with a high-pressure side fixed threaded sleeve (15) and a low-pressure side fixed threaded sleeve (13).
5. A megavoltage ceramic intermediate storage capacitor integrated with voltage measurement capability as defined in claim 4, wherein:
the upper electrode column (1) at the high-voltage side of the first ceramic capacitor matrix (104) is arranged in a protruding mode relative to the end face of the shell (6), and the end face of the other end of the shell (6) is flush with the outer end face of the small resistor (10).
6. The utility model provides an energy storage capacitor in middle of megavoltage pottery of integrated voltage measurement function, includes shell (6), N ceramic capacitor base member (104) and voltage measurement device, and wherein N is greater than or equal to 2, its characterized in that:
the ceramic capacitor substrate (104) comprises a ceramic substrate (2), silver electrode layers (3) connected to two sides of the ceramic substrate (2), an upper electrode column (1) and a lower electrode column (4), wherein the silver electrode layers (3) comprise a high-voltage side silver electrode layer (31) and a low-voltage side silver electrode layer (32), the upper electrode column (1) is connected to the high-voltage side silver electrode layer (31), and the lower electrode column (4) is connected to the low-voltage side silver electrode layer (32);
the N ceramic capacitor matrixes (104) are sequentially connected with the upper electrode column (1) through the lower electrode column (4) to form a series structure, and the low-voltage side of the series structure is connected with a voltage measuring device;
the voltage measuring device comprises a small resistor (10) and a measuring connecting rod (8) which are connected with a lower electrode column (4) of an Nth ceramic capacitor matrix (104) in N ceramic capacitor matrixes (104), and a resistor insulating layer (9) which is arranged around the small resistor (10), wherein a resistor measuring seat (11) is fixed on the outer side end surface of the small resistor (10), a cable connector (12) is connected to the resistor measuring seat (11), a cavity is arranged inside the small resistor (10), a through hole I is formed in the inner side end surface of the small resistor (10) close to the Nth ceramic capacitor matrix (104), the measuring connecting rod (8) is positioned in the cavity, one end of the measuring connecting rod (8) penetrates through the through hole I and is connected with the lower electrode column (4) of the Nth ceramic capacitor matrix (104), a through hole II is formed in the outer side end surface of the small resistor (10), the bottom of the resistor measuring seat (11) penetrates through the through hole II and is connected with the other end of the measuring connecting rod (8), and the outer side end surface of the small resistor (10) is grounded;
the housing (6) is formed by casting an insulating material and covers the series structure, the small resistor (10) and the resistor insulating layer (9).
7. A megavoltage ceramic intermediate storage capacitor integrated with voltage measurement capability as defined in claim 6, wherein:
the ends of the upper electrode column (1) and the lower electrode column (4) are provided with internal threaded holes, and the lower electrode columns (4) of adjacent ceramic capacitor matrixes (104) in the N ceramic capacitor matrixes (104) are mutually connected with the upper electrode column (1) through connecting screws (5).
8. A megavoltage ceramic intermediate storage capacitor integrated with voltage measurement capability as defined in claim 7, wherein:
the bottom of the resistance measuring seat (11) is provided with a step-shaped base which is matched with the through hole, the resistance measuring seat (11) is connected with the small resistor (10), the through hole II is coaxially arranged with the through hole I, and the step-shaped base is fixedly connected with the other end of the measuring connecting rod (8);
the outer side end surface of the small resistor (10) is provided with a threaded hole, and the resistor measuring seat (11) is fixed on the small resistor (10) through a measuring seat fixing screw (14);
one end of the measuring connecting rod (8) is provided with an external thread, and the external thread is connected with an internal thread hole of the lower electrode column (4) of the Nth ceramic capacitor matrix (104).
9. A megavoltage ceramic intermediate storage capacitor integrated with voltage measurement function according to any one of claims 6 to 8, wherein:
the two end surfaces of the shell (6) are respectively provided with a high-pressure side fixed threaded sleeve (15) and a low-pressure side fixed threaded sleeve (13).
10. A megavoltage ceramic intermediate storage capacitor integrated with voltage measurement capability as defined in claim 9, wherein:
the upper electrode column (1) at the high-voltage side of the first ceramic capacitor matrix (104) is arranged in a protruding mode relative to the end face of the shell (6), and the end face of the other end of the shell (6) is flush with the outer end face of the small resistor (10).
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| CN114914090A (en) | 2022-08-16 |
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