Full-automatic tester for dielectric loss and resistivity of insulating oil

Abstract

The utility model relates to the technical field of electronic detection instruments, and discloses a full-automatic tester for dielectric loss and resistivity of insulating oil, which comprises a main body mechanism and an auxiliary mechanism, the auxiliary mechanism is positioned above the main body mechanism, and the main body mechanism comprises a tester body, a sampling barrel and a feed hopper, the sampling barrel is fixedly mounted at the rear end of the upper end of the tester body, and the feeding hopper is fixedly mounted at the upper end of the sampling barrel. According to the full-automatic tester for the dielectric loss and the resistivity of the insulating oil, the main body mechanism is mounted, so that when the tester body is used for measuring the dielectric loss and the resistivity of the insulating oil, a worker can operate a stirring motor to drive a stirring shaft to rotate at a constant speed, and the insulating oil in a sampling barrel is stirred; and the condition of standing layering of the components of the insulating oil is avoided, so that the measured components of the insulating oil are more uniform, and the accuracy of the tester body on the dielectric loss and resistivity measurement data of the insulating oil is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic testing instruments, in particular to a fully automatic tester for dielectric loss and resistivity of insulating oil. Background Art

[0002] Dielectric loss value, dielectric constant and volume resistivity are three important indicators of insulating materials. The degree of compliance is related to the safety performance of power equipment. Therefore, in the prior art, a measuring instrument is used to measure the dielectric loss value and resistivity of the insulating oil in the power equipment.

[0003] The existing patent document with the technical publication number CN206863027U provides an integrated online monitoring device for the dielectric loss factor and volume resistivity of transformer insulating oil. The utility model device can realize online analysis of the dielectric loss factor and volume resistivity in transformer oil, realizes simultaneous monitoring of the dielectric loss factor and volume resistivity of insulating oil from another perspective, and effectively prevents the aging of insulating oil, ensures that effective measures can be taken in a short time to prevent the decrease of the insulating strength of insulating oil, and ensures the safe and stable operation of transformer. The device can save a lot of manual detection workload and can be widely used in transformer operation status analysis and fault diagnosis.

[0004] However, when the existing measuring instruments are used to measure the dielectric loss and resistivity of insulating oil, it is not easy to ensure the uniformity of the components contained in the sampled insulating oil. Since the components contained in the insulating oil will settle due to standing still, and then stratification will occur, it is easy to cause the insulating oil in the measurement operation to be inconsistent with the insulating oil used in the power equipment, which directly affects the accuracy of the measuring instrument's measurement data on the dielectric loss and resistivity of the insulating oil. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The purpose of the utility model is to provide an automatic measuring instrument for dielectric loss and resistivity of insulating oil, so as to solve the problem that the existing measuring instrument mentioned in the above background technology is not convenient for ensuring the uniformity of the components contained in the sampled insulating oil when measuring the dielectric loss and resistivity of insulating oil.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an insulating oil dielectric loss and resistivity fully automatic tester, comprising a main mechanism and an auxiliary mechanism, wherein the auxiliary mechanism is located above the main mechanism, and the main mechanism comprises a tester body, a sampling barrel and a feed hopper, wherein the sampling barrel is fixedly mounted at the rear end of the upper end of the tester body, and the feed hopper is fixedly mounted at the upper end of the sampling barrel;

[0009] The main mechanism also includes a stirring motor, a stirring shaft, a bearing seat and a stirring blade. The stirring motor is fixedly installed at the left end of the sampling barrel, the stirring shaft is fixedly installed at the transmission end of the right end of the stirring motor, the bearing seat is fixedly installed at the right end inside the sampling barrel, the right end of the stirring shaft is rotatably connected to the bearing seat, and the stirring blade is fixedly installed at the outer end of the stirring shaft.

[0010] Preferably, the auxiliary mechanism includes a processor and a test socket, the processor is fixedly mounted at the front end of the upper end of the measuring instrument body, the test socket is fixedly mounted at the upper end of the measuring instrument body, the test socket is electrically connected to the processor, and the design of the processor facilitates the conversion and display of the measurement data of the insulating oil by the test socket.

[0011] Preferably, the auxiliary mechanism also includes a placement slot, a measuring cup and a fixed plate, the placement slot is fixedly arranged at the upper end of the test seat, the measuring cup is movably installed inside the placement slot, and the fixed plate is fixedly installed at the upper end of the test seat. The design of the placement slot facilitates the placement of the measuring cup, and the two groups of measuring cups are respectively a dielectric loss factor measuring cup and a resistivity measuring cup.

[0012] Preferably, the auxiliary mechanism also includes an electric push rod, a pushing rod and a positioning plate, the electric push rod is fixedly mounted on the inner end of the fixing plate, the pushing rod is fixedly mounted on the transmission end of the inner end of the electric push rod, the positioning plate is fixedly mounted on the inner end of the pushing rod, and the positioning plate is movably connected to the measuring cup. The design of the electric push rod can push the positioning plate to fully contact the measuring cup to fix it.

[0013] Preferably, the auxiliary mechanism also includes a support plate, a hydraulic cylinder and a connecting plate, the support plate is fixedly mounted on the rear end of the upper end of the test seat, the hydraulic cylinder is fixedly mounted on the upper end of the support plate, and the connecting plate is fixedly mounted on the transmission end of the lower end of the hydraulic cylinder. The design of the hydraulic cylinder can push the protective cover to connect with the measuring cup.

[0014] Preferably, the auxiliary mechanism also includes a protective cover, a delivery pump and a delivery pipe. The protective cover is fixedly mounted on the left and right ends of the connecting plate, the delivery pump is fixedly mounted on the upper end of the protective cover, the delivery pipe is fixedly mounted on the outer end of the delivery pump, and the left end of the delivery pipe is fixedly connected to the sampling barrel. The design of the delivery pump facilitates the delivery of the insulating oil inside the sampling barrel to the inside of the measuring cup.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The fully automatic tester for dielectric loss and resistivity of insulating oil is installed with a main body mechanism, so that when the tester is measuring dielectric loss and resistivity of insulating oil, the staff can operate the stirring motor to drive the stirring shaft to rotate at a constant speed, stir the insulating oil inside the sampling barrel, avoid the occurrence of static stratification of insulating oil components, make the measured insulating oil components more uniform, and thus improve the accuracy of the tester's main body for measuring dielectric loss and resistivity of insulating oil;

[0017] 2. The insulating oil dielectric loss and resistivity fully automatic tester is installed with auxiliary mechanisms, so that when the tester is in use, the staff can quickly disassemble and assemble the two sets of measuring cups through operation, which is convenient for the staff to remove the measuring cups for cleaning and replacement, thereby improving the flexibility of the tester. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the sampling barrel of the utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the auxiliary mechanism of the utility model;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the test socket of the utility model.

[0022] In the figure: 1. Main mechanism; 101. Measuring instrument body; 102. Sampling barrel; 103. Feed hopper; 104. Stirring motor; 105. Stirring shaft; 106. Bearing seat; 107. Stirring blade; 2. Auxiliary mechanism; 201. Processor; 202. Test seat; 203. Placement slot; 204. Measuring cup; 205. Fixing plate; 206. Electric push rod; 207. Push rod; 208. Positioning plate; 209. Support plate; 210. Hydraulic cylinder; 211. Connecting plate; 212. Protective cover; 213. Delivery pump; 214. Delivery pipe. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1 - Figure 4The utility model provides a technical solution: an insulating oil dielectric loss and resistivity fully automatic tester, comprising a main mechanism 1 and an auxiliary mechanism 2, the auxiliary mechanism 2 is located above the main mechanism 1, the main mechanism 1 comprises a tester body 101, a sampling barrel 102 and a feed hopper 103, the sampling barrel 102 is fixedly mounted at the rear end of the upper end of the tester body 101, and the feed hopper 103 is fixedly mounted at the upper end of the sampling barrel 102;

[0025] The main mechanism 1 also includes a stirring motor 104, a stirring shaft 105, a bearing seat 106 and a stirring blade 107. The stirring motor 104 is fixedly installed at the left end of the sampling barrel 102, the stirring shaft 105 is fixedly installed at the transmission end of the right end of the stirring motor 104, the bearing seat 106 is fixedly installed at the right end inside the sampling barrel 102, the right end of the stirring shaft 105 is rotatably connected to the bearing seat 106, and the stirring blade 107 is fixedly installed at the outer end of the stirring shaft 105. When the measuring instrument body 101 is used to test the dielectric loss and resistivity of the insulating oil, the staff pours the insulating oil to be tested into the sampling barrel 102 through the feed hopper 103, the stirring motor 104 drives the stirring shaft 105 to rotate, and the stirring shaft 105 drives the stirring blade 107 to rotate, so as to stir the insulating oil inside the sampling barrel 102 to avoid the occurrence of static stratification of the insulating oil.

[0026] The auxiliary mechanism 2 includes a processor 201 and a test socket 202. The processor 201 is fixedly mounted on the front end of the upper end of the measuring instrument body 101. The test socket 202 is fixedly mounted on the upper end of the measuring instrument body 101. The test socket 202 is electrically connected to the processor 201. The auxiliary mechanism 2 also includes a placement slot 203, a measuring cup 204 and a fixing plate 205. The placement slot 203 is fixedly arranged on the upper end of the test socket 202. The measuring cup 204 is movably mounted inside the placement slot 203. The fixing plate 205 is fixedly mounted on the upper end of the test socket 202. The auxiliary mechanism 2 further includes an electric push rod 206, a push rod 207 and a positioning plate 208. The electric push rod 206 is fixedly mounted on the inner end of the fixed plate 205. The push rod 207 is fixedly mounted on the transmission end of the inner end of the electric push rod 206. The positioning plate 208 is fixedly mounted on the inner end of the push rod 207. The positioning plate 208 is movably connected to the measuring cup 204. The auxiliary mechanism 2 further includes a support plate 209, a hydraulic cylinder 210 and a connecting plate 211. The support plate 209 is fixedly mounted on the rear end of the upper end of the test seat 202. The hydraulic cylinder 210 is fixedly mounted on the transmission end of the inner end of the electric push rod 206. The auxiliary mechanism 2 further comprises a protective cover 212, a delivery pump 213 and a delivery pipe 214. The protective cover 212 is fixedly mounted on the left and right ends of the connection plate 211. The delivery pump 213 is fixedly mounted on the upper end of the protective cover 212. The delivery pipe 214 is fixedly mounted on the outer end of the delivery pump 213. The left end of the delivery pipe 214 is fixedly connected to the sampling barrel 102. The staff places the two sets of measuring cups 204 on the top of the test seat 202. Place it inside the slot 203, start the electric push rod 206 to push the positioning plate 208 to fully contact the measuring cup 204 and fix it, then start the hydraulic cylinder 210 to push the protective cover 212 to connect with the measuring cup 204, and the delivery pump 213 delivers the insulating oil in the sampling barrel 102 to the inside of the measuring cup 204 through the delivery pipe 214. The dielectric loss and resistivity of the insulating oil in the two groups of measuring cups 204 are tested respectively, and the test socket 202 uploads the data obtained after the test to the processor 201 for the staff to view.

[0027] Working principle: When the measuring instrument body 101 is used to test the dielectric loss and resistivity of insulating oil, the staff pours the insulating oil to be tested into the sampling barrel 102 through the feed hopper 103, and the stirring motor 104 drives the stirring shaft 105 to rotate, and the stirring shaft 105 drives the stirring blade 107 to rotate, so as to stir the insulating oil in the sampling barrel 102 to avoid the insulating oil from being stratified when it is left to stand. The staff places two groups of measuring cups 204 into the placement slot 203 above the test seat 202, starts the electric push rod 206 to push the positioning plate 208 to fully contact the measuring cup 204 and fix it, and then starts the hydraulic cylinder 210 to push the protective cover 212 to connect with the measuring cup 204, and the delivery pump 213 delivers the insulating oil in the sampling barrel 102 to the measuring cup 204 through the delivery pipe 214, and the dielectric loss and resistivity of the insulating oil in the two groups of measuring cups 204 are tested respectively, and the test seat 202 uploads the data obtained after the test to the processor 201 for the staff to view.

[0028] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. An automatic measuring instrument for dielectric loss and resistivity of insulating oil, comprising a main mechanism (1) and an auxiliary mechanism (2), characterized in that: The auxiliary mechanism (2) is located above the main mechanism (1), and the main mechanism (1) includes a measuring instrument body (101), a sampling barrel (102) and a feed hopper (103), wherein the sampling barrel (102) is fixedly mounted at the rear end of the upper end of the measuring instrument body (101), and the feed hopper (103) is fixedly mounted at the upper end of the sampling barrel (102); The main body mechanism (1) further comprises a stirring motor (104), a stirring shaft (105), a bearing seat (106) and a stirring blade (107); the stirring motor (104) is fixedly mounted on the left end of the sampling barrel (102); the stirring shaft (105) is fixedly mounted on the transmission end of the right end of the stirring motor (104); the bearing seat (106) is fixedly mounted on the right end inside the sampling barrel (102); the right end of the stirring shaft (105) is rotatably connected to the bearing seat (106); and the stirring blade (107) is fixedly mounted on the outer end of the stirring shaft (105).

2. The fully automatic tester for dielectric loss and resistivity of insulating oil according to claim 1, characterized in that: The auxiliary mechanism (2) includes a processor (201) and a test socket (202), wherein the processor (201) is fixedly mounted at the front end of the upper end of the measuring instrument body (101), and the test socket (202) is fixedly mounted at the upper end of the measuring instrument body (101), and the test socket (202) is electrically connected to the processor (201).

3. The fully automatic measuring instrument for dielectric loss and resistivity of insulating oil according to claim 2, characterized in that: The auxiliary mechanism (2) further comprises a placement groove (203), a measuring cup (204) and a fixing plate (205); the placement groove (203) is fixedly arranged at the upper end of the test seat (202); the measuring cup (204) is movably mounted inside the placement groove (203); and the fixing plate (205) is fixedly mounted at the upper end of the test seat (202).

4. The fully automatic tester for dielectric loss and resistivity of insulating oil according to claim 3 is characterized in that: The auxiliary mechanism (2) further comprises an electric push rod (206), a pushing rod (207) and a positioning plate (208); the electric push rod (206) is fixedly mounted on the inner end of the fixing plate (205); the pushing rod (207) is fixedly mounted on the transmission end of the inner end of the electric push rod (206); the positioning plate (208) is fixedly mounted on the inner end of the pushing rod (207); and the positioning plate (208) is movably connected to the measuring cup (204).

5. The fully automatic tester for dielectric loss and resistivity of insulating oil according to claim 4, characterized in that: The auxiliary mechanism (2) further comprises a support plate (209), a hydraulic cylinder (210) and a connecting plate (211); the support plate (209) is fixedly mounted on the rear end of the upper end of the test seat (202); the hydraulic cylinder (210) is fixedly mounted on the upper end of the support plate (209); and the connecting plate (211) is fixedly mounted on the transmission end of the lower end of the hydraulic cylinder (210).

6. The fully automatic tester for dielectric loss and resistivity of insulating oil according to claim 5, characterized in that: The auxiliary mechanism (2) further comprises a protective cover (212), a delivery pump (213) and a delivery pipe (214); the protective cover (212) is fixedly mounted on the left and right ends of the connecting plate (211); the delivery pump (213) is fixedly mounted on the upper end of the protective cover (212); the delivery pipe (214) is fixedly mounted on the outer end of the delivery pump (213); and the left end of the delivery pipe (214) is fixedly connected to the sampling barrel (102).

Images