Improved heat pipe type insulating sleeve test equipment

Abstract

The invention provides improved heat pipe type insulating sleeve test equipment. The improved heat pipe type insulating sleeve test equipment comprises a fixed box, a supporting seat, an experiment shell, a shielding cover, an insulating sleeve, a detachable and replaceable insulating test pipe structure, a slidable adjustment temperature measuring block structure, a pluggable fixed cooling frame structure and an observable protective shielding box structure. According to the invention, the experiment shell, the shielding cover, the plugging frame, the connection box, the voltage generator, the supporting insulation box and the observation sheet are arranged in a mutual cooperation manner, so that shielding protection work can be carried out in the test process, and electric shock accidents can be prevented in the test process; the experiment shell, the connecting plate, the supporting pipe, the sliding rod, the supporting rod, the temperature measuring block and the infrared temperature sensor are arranged in a matched mode, the infrared temperature sensor can get close to the outer wall of the insulating sleeve and the outer wall of the heat pipe type insulating outer sleeve in the test process, and the purpose of measuring the temperature of the outer wall of the sleeve in the test process is facilitated.

Description

Technical Field

[0001] The present invention belongs to the technical field of power equipment, and particularly relates to an improved test equipment for heat pipe type insulating bushings. Background Art

[0002] With the continuous increase in the transmission capacity of UHV DC transmission projects, the rated current of DC equipment has also increased significantly. The rated current of UHV DC insulating bushings has exceeded 5000A and is affected by harmonics, resulting in serious heating of the insulating bushings. As a result, the telescopic deformation of the conducting rod inside the insulating bushing, the cavity sealing performance of the conducting rod, and the insulation strength of the insulating bushing are all threatened. There are more and more failures caused by the heating of the insulating bushing, resulting in significant economic losses. The existing test devices for heat pipe type insulating bushings are inconvenient for shielding protection during use, inconvenient for detecting the outer wall temperature of the insulating bushing during the experiment, and inconvenient for replacing the insulating bushing during the test. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides an improved test equipment for heat pipe type insulating bushings. By setting a protection mechanism during the test, it is convenient to carry out protection work during the test, and by setting an outer wall temperature detection mechanism during the test, it is convenient to detect the outer wall temperature of the bushing during the test, and by improving the insulating bushing fixing mechanism during the test, it is convenient to replace the insulating bushing during the test.

[0004] The improved test equipment for heat pipe type insulating bushings includes a fixed box. A support seat is arranged at the middle position of the upper end of the fixed box; an experimental shell is bolted to the upper end of the fixed box; shielding covers are respectively hinged to the left and right sides of the front end of the experimental shell; an insulating bushing is bolted to the middle position on the right side of the upper end of the support seat. It is characterized in that a detachable and replaceable insulating test tube structure is connected to the middle position on the left side of the upper end of the support seat; slidable temperature measurement block structures are arranged at the middle positions of the inner walls on the left and right sides of the experimental shell; a pluggable and fixed cooling rack structure is arranged inside the fixed box; an observable protection shielding box structure is arranged on the outer walls of the fixed box and the experimental shell; the detachable and replaceable insulating test tube structure includes a heat pipe type insulating outer sleeve. An upper sleeve pipe is sleeved on the outer wall of the upper end of the heat pipe type insulating outer sleeve; a lower sleeve pipe is sleeved on the outer wall of the lower end of the heat pipe type insulating outer sleeve; the lower sleeve pipe is bolted to the middle position on the upper end of the step-down transformer; a heat pipe type insulating inner sleeve is arranged at the middle position inside the heat pipe type insulating outer sleeve; contact type temperature sensors are sequentially arranged from top to bottom between the heat pipe type insulating outer sleeve and the heat pipe type insulating inner sleeve; the heat pipe type insulating inner sleeve is sleeved on the outer wall of the conducting rod.

[0005] Preferably, the slidable temperature measurement block structure includes a connecting plate, and a support pipe is bolted and fixed at the middle position on the right side of the connecting plate; sliding rods are slidably penetrated through the sliding holes opened at the front and rear ends of the support pipe; a support rod is bolted and fixed at the middle position on the right side of the sliding rod; the right end of the support rod is bolted and fixed at the middle position on the left side of the temperature measurement block; infrared temperature sensors are respectively bolted and fixed at the upper part and the lower part on the right side of the temperature measurement block.

[0006] Preferably, the pluggable and fixed cooling frame structure includes a plug-in frame, and an oil tank is bolted and fixed at the middle position at the inner bottom end of the plug-in frame; heat dissipation fins are bolted and fixed at the left and right ends of the oil tank from top to bottom in sequence; ventilation holes are respectively opened at the middle positions on the left and right sides at the front end of the plug-in frame; heat dissipation fans are respectively bolted and fixed at the middle positions inside the ventilation holes.

[0007] Preferably, the observable protection shielding box structure includes a connecting box, and a voltage generator is bolted and fixed at the inner bottom end of the connecting box; the upper end of the connecting box is bolted and fixed at the right side at the bottom end of the support insulating box; an observation piece is inlaid on the inner wall at the front end of the support insulating box.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0009] 1. In the present invention, the experimental shell, the shielding cover, the plug-in frame, the connecting box, the voltage generator, the support insulating box and the observation piece are arranged in cooperation, which is beneficial to carry out the shielding protection work during the test, and at the same time prevent the occurrence of electric shock accidents during the test.

[0010] 2. In the present invention, the experimental shell, the connecting plate, the support pipe, the sliding rod, the support rod, the temperature measurement block and the infrared temperature sensor are arranged in cooperation, which is beneficial to approach the outer walls of the insulating sleeve and the heat pipe type insulating outer sleeve respectively through the infrared temperature sensor during the test, and is convenient for measuring the temperature of the outer wall of the sleeve during the test.

[0011] 3. In the present invention, the heat pipe type insulating outer sleeve, the upper sleeve pipe, the lower sleeve pipe, the step-down transformer, the heat pipe type insulating inner sleeve, the contact type temperature sensor and the conductive rod are arranged in cooperation, which is beneficial to respectively sleeve the upper sleeve pipe and the lower sleeve pipe on the outer walls at both ends of the heat pipe type insulating outer sleeve during the test, and is convenient for replacing and installing the heat pipe type insulating outer sleeve during the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the present invention.

[0013] Figure 2It is a schematic structural diagram of the detachable and replaceable insulation test tube structure of the present invention.

[0014] Figure 3 It is a schematic structural diagram of the slidable adjustable temperature measurement block structure of the present invention.

[0015] Figure 4 It is a schematic structural diagram of the pluggable and fixed cooling rack structure of the present invention.

[0016] Figure 5 It is a schematic structural diagram of the observable protective shielding box structure of the present invention.

[0017] Figure 6 It is a cross-sectional view of the detachable and replaceable insulation test tube structure of the present invention.

[0018] In the figure:

[0019] 1. Fixed box; 2. Support seat; 3. Experiment shell; 4. Shading cover; 5. Insulating sleeve; 6. Detachable and replaceable insulation test tube structure; 61. Heat pipe type insulating outer sleeve; 62. Upper sleeve joint; 63. Lower sleeve joint; 64. Step-down transformer; 65. Heat pipe type insulating inner sleeve; 66. Contact type temperature sensor; 67. Conductive rod; 7. Slidable adjustable temperature measurement block structure; 71. Connecting plate; 72. Support tube; 73. Sliding rod; 74. Support rod; 75. Temperature measurement block; 76. Infrared temperature sensor; 8. Pluggable and fixed cooling rack structure; 81. Plug-in rack; 82. Oil tank; 83. Heat sink; 84. Ventilation hole; 85. Cooling fan; 9. Observable protective shielding box structure; 91. Connecting box; 92. Voltage generator; 93. Support insulating box; 94. Observation piece. Specific embodiments

[0020] The present invention will be specifically described below with reference to the accompanying drawings. As shown in the attached Figure 1 and attached Figure 2As shown in the figure, the improved heat pipe type insulating sleeve test equipment includes a fixed box 1, a support base 2, an experimental shell 3, a shielding cover 4, an insulating sleeve 5, a detachable and replaceable insulating test tube structure 6, a slidable temperature measurement block structure 7, a pluggable and fixed cooling rack structure 8, and an observable and protective shielding box structure 9. A support base 2 is arranged at the middle position of the upper end of the fixed box 1; The experimental shell 3 is bolted to the upper end of the fixed box 1; The front end of the experimental shell 3 is hinged with shielding covers 4 on the left and right sides respectively; An insulating sleeve 5 is bolted to the middle position of the upper right side of the support base 2; A detachable and replaceable insulating test tube structure 6 is connected to the middle position of the upper left side of the support base 2; A slidable temperature measurement block structure 7 is arranged at the middle positions of the inner walls on the left and right sides of the experimental shell 3; A pluggable and fixed cooling rack structure 8 is arranged inside the fixed box 1; An observable and protective shielding box structure 9 is arranged on the outer walls of the fixed box 1 and the experimental shell 3; The detachable and replaceable insulating test tube structure 6 includes a heat pipe type insulating outer sleeve 61, an upper sleeve 62, a lower sleeve 63, a step-down transformer 64, a heat pipe type insulating inner sleeve 65, a contact type temperature sensor 66, and a conducting rod 67. The upper sleeve 62 is sleeved on the outer wall of the upper end of the heat pipe type insulating outer sleeve 61; The lower sleeve 63 is sleeved on the outer wall of the lower end of the heat pipe type insulating outer sleeve 61; The lower sleeve 63 is bolted to the middle position of the upper end of the step-down transformer 64; A heat pipe type insulating inner sleeve 65 is arranged at the middle position inside the heat pipe type insulating outer sleeve 61; Contact type temperature sensors 66 are arranged successively from top to bottom between the heat pipe type insulating outer sleeve 61 and the heat pipe type insulating inner sleeve 65; The heat pipe type insulating inner sleeve 65 is sleeved on the outer wall of the conducting rod 67; When in use, the fixed box 1 is fixed at a suitable position, and an external power supply and an external control device are connected by using an external wire. Then, the heat pipe type insulating outer sleeve 61 to be tested is sleeved between the upper sleeve 62 and the lower sleeve 63, and the conducting rod 67 is connected.

[0021] In this implementation plan, in combination with the attached Figure 3As shown in the figure, the slidable temperature measurement block structure 7 includes a connecting plate 71, a support tube 72, a sliding rod 73, a support rod 74, a temperature measurement block 75, and an infrared temperature sensor 76. A support tube 72 is bolted and fixed at the middle position on the right side of the connecting plate 71. The sliding rod 73 is slidably penetrated through the sliding holes opened at the front and rear ends of the support tube 72. A support rod 74 is bolted and fixed at the middle position on the right side of the sliding rod 73. The right end of the support rod 74 is bolted and fixed at the middle position on the left side of the temperature measurement block 75. Infrared temperature sensors 76 are respectively bolted and fixed at the upper and lower parts on the right side of the temperature measurement block 75. After the device is connected and fixed, according to the diameters of the heat pipe type insulating outer sleeve 61 and the insulating sleeve 5, the temperature measurement block 75 is pushed to move, and the position of the temperature measurement block 75 is adjusted to facilitate the measurement of the outer wall temperatures of the heat pipe type insulating outer sleeve 61 and the insulating sleeve 5 during the experiment, and to prevent the experimental effect from being affected due to the too high outer wall temperature of the heat pipe type insulating outer sleeve 61 and the insulating sleeve 5.

[0022] In this implementation scheme, in combination with the attached Figure 4 As shown in the figure, the pluggable and fixed cooling frame structure 8 includes a plug-in frame 81, an oil tank 82, heat sinks 83, ventilation holes 84, and cooling fans 85. An oil tank 82 is bolted and fixed at the middle position on the inner bottom end of the plug-in frame 81. Heat sinks 83 are bolted and fixed at the left and right ends of the oil tank 82 from top to bottom in sequence. Ventilation holes 84 are respectively opened at the middle positions on the left and right sides of the front end of the plug-in frame 81. Cooling fans 85 are respectively bolted and fixed at the middle positions inside the ventilation holes 84. After the device is fixed, cooling fans 85 are installed at the middle positions inside the ventilation holes 84, and the cooling fans 85 are controlled to work during the experiment. Through the power generated when the cooling fans 85 work, the gas is blown to flow, accelerating the gas flow speed around the oil tank 82 and the heat sinks 83, improving the cooling efficiency of the equipment during the experiment, and preventing the experimental effect from being affected due to the too high temperature.

[0023] In this implementation scheme, in combination with the attached Figure 5 As shown in the figure, the observable protective shielding box structure 9 includes a connecting box 91, a voltage generator 92, a support insulating box 93, and an observation piece 94. A voltage generator 92 is bolted and fixed at the inner bottom end of the connecting box 91. The upper end of the connecting box 91 is bolted and fixed at the right bottom end of the support insulating box 93. An observation piece 94 is inlaid on the inner wall of the front end of the support insulating box 93. During the experiment, the conductive mechanism and the voltage generator 92 are arranged inside the connecting box 91 and the support insulating box 93, and at the same time, through the shielding cover 4, it is arranged at the front end of the experimental shell 3, facilitating the equipment shielding and protection work during the experiment, and at the same time preventing the occurrence of electric shock accidents during the experiment, thereby completing the heat pipe type insulating sleeve experiment work.

[0024] In this implementation scheme, specifically, the support base 2 is bolted to the bottom of the inner wall of the experimental shell 3; the insulating sleeve 5 is arranged at the middle position on the right side inside the experimental shell 3 and a through hole is opened at the upper end of the experimental shell 3; the shielding cover 4 is a transparent PVC cover; through holes are respectively opened at the upper end of the fixed box 1 and inside the support base 2.

[0025] In this implementation scheme, specifically, the conductive rods 67 respectively penetrate through the inside of the upper sleeve pipe 62, the lower sleeve pipe 63 and the step-down transformer 64.

[0026] In this implementation scheme, specifically, the step-down transformer 64 is bolted to the middle position on the left side of the upper end of the support base 2; the heat pipe type insulating outer sleeve pipe 61 is arranged at the middle position on the left side inside the experimental shell 3.

[0027] In this implementation scheme, specifically, the left end of the support rod 74 is slidably inserted into the inside of the right end of the support pipe 72; the temperature measuring block 75 is a PVC block with a concave shape on the right side; the support pipe 72 is a stainless steel pipe with sliding holes respectively opened at the middle positions of the front and rear ends.

[0028] In this implementation scheme, specifically, the connecting plates 71 are respectively bolted to the middle positions of the left and right inner walls of the experimental shell 3; the temperature measuring blocks 75 are respectively arranged on one side of the outer walls of the heat pipe type insulating outer sleeve pipe 61 and the insulating sleeve 5.

[0029] In this implementation scheme, specifically, the plug-in frame 81 is a U-shaped stainless steel frame and stainless steel mesh sheets are respectively bolted to the back of the inner wall of the ventilation hole 84; a conductor is arranged at the top inside the fuel tank 82.

[0030] In this implementation scheme, specifically, the plug-in frame 81 is inserted into the inside of the fixed box 1 and a sealing ring is arranged at the connection; the bottom end of the conductive rod 67 and the bottom end of the conductor arranged inside the insulating sleeve 5 are connected through the conductive connection body arranged at the top inside the fuel tank 82.

[0031] In this implementation scheme, specifically, the observation piece 94 is a transparent toughened glass piece; a transparent PVC piece is inlaid on the front inner wall of the connection box 91.

[0032] In this implementation scheme, specifically, the conductors arranged inside the insulating sleeve 5 and the heat pipe type insulating inner sleeve pipe 65 are connected to the voltage generator 92 through the conductors arranged outside; the connection box 91 is bolted to the middle position on the right side of the fixed box 1; the support insulating box 93 is bolted to the middle position on the upper end of the fixed box 1.

[0033] Working principle

[0034] In the present invention, during use, the fixed box 1 is fixed at an appropriate position, and an external power supply and an external control device are connected using an external wire. Then, the heat pipe type insulating outer sleeve 61 to be tested is sleeved between the upper sleeve pipe 62 and the lower sleeve pipe 63. After the connection work of the conductive rod 67 is carried out and the device is connected and fixed, according to the diameters of the heat pipe type insulating outer sleeve 61 and the insulating sleeve 5, the temperature measuring block 75 is pushed to move, and the position of the temperature measuring block 75 is adjusted to facilitate the measurement of the outer wall temperatures of the heat pipe type insulating outer sleeve 61 and the insulating sleeve 5 during the test, preventing the experimental effect from being affected after the outer wall temperatures of the heat pipe type insulating outer sleeve 61 and the insulating sleeve 5 are too high. After the device is fixed, a cooling fan 85 is installed at the middle position inside the ventilation hole 84, and the cooling fan 85 is controlled to work during the test. Through the power generated when the cooling fan 85 works, the gas is blown to flow, accelerating the gas flow speed around the fuel tank 82 and the heat sink 83, improving the cooling efficiency of the equipment during the test, and preventing the experimental effect from being affected after the temperature is too high. During the test, the conductive mechanism and the voltage generator 92 are arranged inside the connection box 91 and the support insulating box 93, and at the same time, they are arranged at the front end of the experimental shell 3 through the shielding cover 4, facilitating the shielding and protection work of the equipment during the test and preventing the occurrence of electric shock accidents during the test, thereby completing the heat pipe type insulating sleeve experiment work.

[0035] Any technical solution using the technical solution of the present invention, or a technical solution designed by a person skilled in the art inspired by the technical solution of the present invention and achieving the above technical effects, shall fall within the protection scope of the present invention.

Claims

1. An improved heat pipe type insulating sleeve test equipment, comprising a fixed box (1), wherein a support seat (2) is arranged at the middle position of the upper end of the fixed box (1); a test shell (3) is bolted to the upper end of the fixed box (1); shielding covers (4) are hingedly connected to the left and right sides of the front end of the test shell (3); an insulating sleeve (5) is bolted to the middle position of the upper right side of the support seat (2); the characteristics are: The support seat (2) in the improved heat pipe type insulating sleeve test equipment is connected to a detachable and replaceable insulating test tube structure (6) at the middle position of the upper left side of the support seat (2); a slidable and adjustable temperature measurement block structure (7) is arranged at the middle position of the inner walls on the left and right sides of the test shell (3); a pluggable and fixed cooling frame structure (8) is arranged inside the fixed box (1); an observable protective shielding box structure (9) is arranged on the outer walls of the fixed box (1) and the test shell (3); the detachable and replaceable insulating test tube structure (6) includes a heat pipe type insulating outer sleeve (61), and the heat pipe type insulating outer sleeve (6 1) is sleeved with an upper sleeve pipe (62); the lower outer wall of the heat pipe type insulating outer sleeve (61) is sleeved with a lower sleeve pipe (63); the lower sleeve pipe (63) is bolted to the middle position of the upper end of the step-down transformer (64); a heat pipe type insulating inner sleeve (65) is arranged at the middle position inside the heat pipe type insulating outer sleeve (61); contact temperature sensors (66) are arranged in sequence from top to bottom between the heat pipe type insulating outer sleeve (61) and the heat pipe type insulating inner sleeve (65); the heat pipe type insulating inner sleeve (65) is sleeved on the outer wall of the conductive rod (67).

2. The improved thermal tube insulating sleeve test equipment as claimed in claim 1, characterized in that: The slidably adjustable temperature measuring block structure (7) comprises a connecting plate (71), a support tube (72) being bolted to the middle position on the right side of the connecting plate (71); a sliding rod (73) slidingly penetrates the sliding holes provided at the front and rear ends of the support tube (72); a support rod (74) being bolted to the middle position on the right side of the sliding rod (73); the right end of the support rod (74) being bolted to the middle position on the left side of the temperature measuring block (75); and infrared temperature sensors (76) being bolted to the upper right part and the lower right part of the temperature measuring block (75), respectively.

3. The improved thermal tube insulation sleeve test equipment as claimed in claim 1, characterized in that: The pluggable fixed cooling frame structure (8) comprises a plug-in frame (81), an oil tank (82) is bolted to the middle position of the bottom of the plug-in frame (81); heat sinks (83) are bolted to the left and right ends of the oil tank (82) in sequence from top to bottom; ventilation holes (84) are respectively opened at the middle positions of the left and right sides of the front end of the plug-in frame (81); and heat dissipation fans (85) are respectively bolted to the middle positions of the ventilation holes (84).

4. The improved thermal tube insulation sleeve test equipment as claimed in claim 1, characterized in that: The observable protective shielding box structure (9) comprises a connection box (91), the bottom end of the connection box (91) is bolted with a voltage generator (92); the upper end of the connection box (91) is bolted to the right side of the bottom end of a supporting insulating box (93); and the front end inner wall of the supporting insulating box (93) is inlaid with an observation piece (94).

5. The improved thermal tube insulation sleeve test equipment as claimed in claim 1, characterized in that: The step-down transformer (64) is bolted to the middle position on the left side of the upper end of the support seat (2); the heat pipe type insulating outer sleeve (61) is arranged at the middle position on the left side inside the experimental shell (3).

6. The improved thermal tube insulation sleeve test equipment as claimed in claim 2, characterized in that: The connecting plates (71) are bolted to the middle positions of the left and right inner walls of the experimental shell (3); the temperature measuring blocks (75) are respectively arranged on one side of the outer wall of the heat pipe type insulating outer sleeve (61) and the insulating sleeve (5).

7. The improved thermal tube insulation sleeve test equipment as claimed in claim 3, characterized in that: The plug-in frame (81) is plugged into the interior of the fixed box (1) and a sealing ring is provided at the connection; the bottom end of the conductive rod (67) and the bottom end of the conductor provided inside the insulating sleeve (5) are connected via a conductive connector provided at the top end of the oil tank (82).

8. The improved thermal tube insulation sleeve test equipment as claimed in claim 4, characterized in that: The observation piece (94) is made of a transparent tempered glass sheet; the front inner wall of the connection box (91) is inlaid with a transparent PVC sheet.

9. The improved thermal tube insulation sleeve test equipment as claimed in claim 4, characterized in that: The connection box (91) is bolted to the middle position of the right side of the fixed box (1); and the support insulation box (93) is bolted to the middle position of the upper end of the fixed box (1).

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