Temperature detection element of steam turbine

Abstract

The utility model discloses a steam turbine temperature detection element, which comprises a shell, a connecting flange, a junction box, opening and closing plates, a resistor structure and a connector lug, the steam turbine temperature detection element is provided with a fixing mechanism, the two groups of opening and closing plates are fixed through the matching of a fixing rod, a clamping block and a fixing plate, the trouble of rotating a screw is saved, and when a rotating handle is rotated, the rotating handle can rotate conveniently. When the screw rotates, the screw moves through the fixing sleeve, when the screw moves, the connecting block is pushed to move, when the connecting block moves, the connecting rod is driven to move, when the connecting rod moves, the connecting rod drives the connecting rod to move through the first hinge piece, and when the connecting rod moves, the clamping block is driven to move through the second hinge piece. The fixing effect of the clamping block on the opening and closing plate is canceled, then the fixing rod can be taken out, the opening and closing plate is opened to maintain a connector lug and a resistor structure in the junction box, through the arrangement, fixing of the opening and closing plate can be conveniently and rapidly controlled, time is saved, the mounting and dismounting efficiency is improved, and then the maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine temperature detection, in particular to a steam turbine temperature detection element. Background Art

[0002] When the temperature of a steam turbine is detected in a power plant, a temperature measuring element is usually passed through a connecting joint, the connecting joint is fixed on the steam turbine, and the temperature measuring element is placed in the steam turbine to measure the temperature.

[0003] For example, the "Turbine Temperature Element" with publication number CN216593840U includes a protective sleeve, a thermocouple, and a junction box; an armor layer is provided on the surface of the thermocouple; it can protect the thermocouple, and the thermocouple passes through the protective sleeve; the junction box is provided at one end of the thermocouple, and the protective sleeve protects and fixes the thermocouple; the armor layer provided on the outer surface of the thermocouple can further protect the thermocouple, and the armor layer and the protective sleeve are directly welded, thereby solving the sealing problem between the thermocouple and the protective sleeve.

[0004] Although the above-mentioned temperature elements have certain advantages in protecting thermocouples, they still have certain disadvantages:

[0005] When the above-mentioned temperature detection element is used for work, after long-term use, its internal structural elements need to be inspected and maintained. However, the disassembly and assembly of the detection element is too troublesome and cannot be quickly disassembled and installed, which takes a long time and reduces the maintenance efficiency. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] In view of the deficiencies in the prior art, the utility model provides a steam turbine temperature detection element to solve the above-mentioned problems.

[0008] (II) Technical solution

[0009] To achieve the above purpose, the utility model is implemented through the following technical solutions: a steam turbine temperature detection element, including a shell, a connecting flange, a terminal box, an opening and closing plate, a resistance structure, a terminal head and a fixing device, the connecting flange is arranged on the outside of the shell, the terminal box is fixed to the top of the shell, the opening and closing plate is provided with two groups, and both are arranged on the outside of the terminal box, the right ends of the two groups of opening and closing plates are rotatably connected through a rotating shaft, the resistance structure is arranged inside the shell, the terminal head is arranged inside the terminal box, and the fixing device is arranged inside the two groups of opening and closing plates The fixing device includes a fixing rod, a fixing plate, a fixing sleeve, a screw, a rotating handle, a connecting mechanism and a clamping mechanism. The fixing rod passes through two sets of opening and closing plates and is arranged inside the opening and closing plates. The fixing plate is arranged at the outer top of the fixing rod. The fixing sleeve is fixed to the top of the fixing rod. The screw is arranged inside the fixing sleeve, and the bottom end of the screw extends downward to the inside of the fixing rod. The rotating handle is fixed to the top of the screw. The connecting mechanism is arranged at the bottom end of the screw. The clamping mechanism has two groups and is arranged at the inner bottom of the fixing rod in a left-right symmetrical manner with the fixing rod as the center.

[0010] Preferably, the connecting mechanism includes a connecting block, a connecting groove, a connecting rod and a support plate, the connecting block is fixed to the bottom end of the screw rod, the connecting groove is arranged on the outside of the connecting block, the connecting rod is fixed to the bottom end of the connecting groove, and the support plate is fixed to the inner bottom end of the fixed rod.

[0011] Preferably, the fixing mechanism includes a hinge part 1, a connecting rod, a hinge part 2, a clamping block, a limit rod and a limit groove, the hinge part 1 is fixed to the bottom end of the connecting rod, the top end of the connecting rod is rotatably connected to the hinge part 1, and the bottom end of the connecting rod is rotatably connected to the hinge part 2, the hinge part 2 is arranged at the top end of the clamping block, the clamping block is arranged at the top end of the support plate, the limit rod is fixed to the top end of the support plate, and the outer side of the limit rod is arranged inside the limit groove, and the limit groove is opened at the bottom end of the clamping block.

[0012] Preferably, the interior of the fixing sleeve is threaded and is threadably connected to the screw rod. Through this arrangement, the screw rod is driven to rotate when the handle rotates, and the screw rod can be moved when the screw rod rotates.

[0013] Preferably, the outer side of the turning handle is provided with anti-skid patterns, and this arrangement makes the turning handle smoother.

[0014] Preferably, the connecting block is arranged in an inverted "T" shape, and the outer side of the connecting block is in contact with the inner wall of the connecting groove. Through this arrangement, the connecting block can rotate in the connecting groove, and when the connecting block moves, the connecting rod can be driven to move through the connecting groove.

[0015] Preferably, the inner wall of the limiting groove is smoothly arranged and fits with the outer side of the limiting rod, and the moving track of the clamping block is limited by the cooperation between the limiting groove and the limiting rod.

[0016] (III) Beneficial effects

[0017] The utility model provides a steam turbine temperature detection element. It has the following beneficial effects: by setting a fixing mechanism, two groups of opening and closing plates are fixed by the cooperation of a fixing rod, a clamping block and a fixing plate, thus eliminating the trouble of turning the screw, and when the turning handle is turned, the turning handle drives the screw rod to rotate, and when the screw rod rotates, the screw rod is moved by the fixing sleeve, and when the screw rod moves, the connecting block is pushed to move, and when the connecting block moves, the connecting rod is driven to move, and when the connecting rod moves, the connecting rod is driven to move by the hinge part 1, and when the connecting rod moves, the clamping block is driven to move by the hinge part 2, and the fixing effect of the clamping block on the opening and closing plate is cancelled, and then the fixing rod can be taken out, and the opening and closing plate can be opened to maintain the terminal head and the resistance structure in the junction box. Through this setting, the fixing of the opening and closing plate can be conveniently and quickly controlled, which saves time, improves the efficiency of installation and disassembly, and thus improves the maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 It is a structural front view of the utility model;

[0020] Figure 3 This is a front view of the fixing device structure in the utility model;

[0021] Figure 4 This is a front view of the connecting mechanism structure in the utility model;

[0022] Figure 5 It is a front view of the fixing mechanism structure in the utility model.

[0023] In the figure: shell 1, connecting flange 2, junction box 3, opening and closing plate 4, resistor structure 5, terminal head 6, fixing device 7, fixing rod 71, fixing plate 72, fixing sleeve 73, screw 74, handle 75, connecting mechanism 76, clamping mechanism 77, connecting block 761, connecting groove 762, connecting rod 763, supporting plate 764, hinge part 1 771, connecting rod 772, hinge part 2 773, clamping block 774, limiting rod 775, limiting groove 776. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-3 The utility model provides a technical solution for a steam turbine temperature detection element: a steam turbine temperature detection element, comprising a shell 1, a connecting flange 2, a terminal box 3, an opening and closing plate 4, a resistance structure 5, a terminal head 6 and a fixing device 7, wherein the connecting flange 2 is arranged on the outer side of the shell 1, the terminal box 3 is fixed to the top of the shell 1, the opening and closing plates 4 are provided with two groups, and both are arranged on the outer side of the terminal box 3, the right ends of the two groups of opening and closing plates 4 are rotatably connected through a rotating shaft, the resistance structure 5 is arranged inside the shell 1, the terminal head 6 is arranged inside the terminal box 3, the fixing device 7 is arranged inside the two groups of opening and closing plates 4, the fixing device 7 comprises a fixing rod 71, a fixing plate 72, a fixing sleeve 73, a screw rod 74, a rotating handle 75, a connecting mechanism 76 and a clamping mechanism 77, and the fixing rod 71 passes through the two groups of opening and closing plates 4 The locking cam 76 is provided on the bottom end of the locking cam 74, and the locking cam 77 is provided with two sets of the locking cam 77. The locking cam 77 has ...

[0026] See also Figure 4 and Figure 5The utility model provides a technical solution for a steam turbine temperature detection element: a steam turbine temperature detection element, a connecting mechanism 76 includes a connecting block 761, a connecting groove 762, a connecting rod 763 and a support plate 764, the connecting block 761 is fixed to the bottom end of the screw rod 74, the connecting groove 762 is arranged on the outside of the connecting block 761, the connecting rod 763 is fixed to the bottom end of the connecting groove 762, the support plate 764 is fixed to the inner bottom end of the fixed rod 71, the clamping mechanism 77 includes a hinge 1 771, a connecting rod 772, a hinge 2 773, a clamping block 774, a limiting rod 775 and a limiting groove 776, the hinge 1 771 is fixed to the bottom end of the connecting rod 763, the top end of the connecting rod 772 is rotatably connected to the hinge 1 771, and the bottom end of the connecting rod 772 is rotatably connected to the hinge 2 773 The second hinge part 773 is arranged at the top of the block 774, the block 774 is arranged at the top of the support plate 764, the limiting rod 775 is fixed to the top of the support plate 764, and the outer side of the limiting rod 775 is arranged inside the limiting groove 776, and the limiting groove 776 is opened at the bottom end of the block 774, the connecting block 761 is arranged in an inverted "T" shape, and the outer side of the connecting block 761 is in contact with the inner wall of the connecting groove 762. Through this arrangement, the connecting block 761 can rotate in the connecting groove 762. When the connecting block 761 moves, the connecting rod 763 can be driven to move through the connecting groove 762. The inner wall of the limiting groove 776 is smoothly arranged and in contact with the outer side of the limiting rod 775. The moving trajectory of the block 774 is limited by the cooperation of the limiting groove 776 and the limiting rod 775.

[0027] Here’s how it works:

[0028] First, after the temperature detection element has been used for a period of time, the resistance structure 5 and the terminal 6 thereof need to be maintained to ensure its normal detection effect;

[0029] Second, the handle 75 is rotated. When the handle 75 rotates, the screw rod 74 is driven to move. When the screw rod 74 moves, the fixing sleeve 73 cooperates to make the screw rod 74 move upward. When the screw rod 74 moves, the connecting block 761 is driven to move. When the connecting block 761 moves, the connecting rod 763 is driven to move through the connecting groove 762.

[0030] Third, when the connecting rod 763 moves upward, the connecting rod 772 is driven to move through the hinge 1 771, and when the connecting rod 772 moves, the block 772 is driven to move through the hinge 2 773, and when the block 774 moves, the block 774 moves horizontally through the cooperation of the limiting rod 775 and the limiting groove 776, and when the block 774 moves, the fixing effect on the opening and closing plate 4 is cancelled, and then the rotating handle 75 can be pulled to drive the fixing rod 71 to move, and the fixing rod 71 can be moved out of the opening and closing plate 4;

[0031] Fourth, after the fixing rod 71 is moved out, the junction box 3 can be opened by rotating the opening and closing plate 4, and the internal resistance structure 5 and the terminal head 6 can be inspected and maintained. When the maintenance is completed, the opening and closing plate 4 is closed, and the fixing rod 71 is placed in the gaps of the two sets of opening and closing plates 4. Repeat step 2 to move the screw rod 74 downward, thereby pushing the block 774 to move, so that the block 774 is moved out of the fixing rod 71, and the block 774 is re-fixed to the opening and closing plate 4, and finally it can be put into use.

[0032] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

[0033] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steam turbine temperature detection element, comprising a housing (1), a connecting flange (2), a terminal box (3), an opening and closing plate (4), a resistance structure (5) and a terminal head (6), wherein the connecting flange (2) is arranged on the outside of the housing (1), the terminal box (3) is fixed to the top of the housing (1), the opening and closing plates (4) are provided in two groups, and both are arranged on the outside of the terminal box (3), the right ends of the two groups of opening and closing plates (4) are rotatably connected via a rotating shaft, the resistance structure (5) is arranged inside the housing (1), and the terminal head (6) is arranged inside the terminal box (3); Features: The invention also comprises a fixing device (7), wherein the fixing device (7) is arranged inside the two groups of opening and closing plates (4), and the fixing device (7) comprises a fixing rod (71), a fixing plate (72), a fixing sleeve (73), a screw rod (74), a rotating handle (75), a connecting mechanism (76) and a fixing mechanism (77). The fixing rod (71) passes through the two groups of opening and closing plates (4) and is arranged inside the opening and closing plates (4). The fixing plate (72) is arranged on the outer top of the fixing rod (71). The fixing sleeve (73) is fixed to the top end of the fixing rod (71), the screw rod (74) is arranged inside the fixing sleeve (73), and the bottom end of the screw rod (74) extends downward to the inside of the fixing rod (71), the rotating handle (75) is fixed to the top end of the screw rod (74), the connecting mechanism (76) is arranged at the bottom end of the screw rod (74), and the clamping mechanism (77) is provided with two groups, and is arranged at the bottom of the fixing rod (71) in a left-right symmetrical manner with the fixing rod (71) as the center.

2. A steam turbine temperature detection element according to claim 1, characterized in that: The connecting mechanism (76) comprises a connecting block (761), a connecting groove (762), a connecting rod (763) and a support plate (764); the connecting block (761) is fixed to the bottom end of the screw rod (74); the connecting groove (762) is arranged on the outside of the connecting block (761); the connecting rod (763) is fixed to the bottom end of the connecting groove (762); and the support plate (764) is fixed to the inner bottom end of the fixing rod (71).

3. A steam turbine temperature detection element according to claim 1, characterized in that: The fixing mechanism (77) comprises a hinge part 1 (771), a connecting rod (772), a hinge part 2 (773), a clamping block (774), a limiting rod (775) and a limiting groove (776); the hinge part 1 (771) is fixed to the bottom end of the connecting rod (763); the top end of the connecting rod (772) is rotatably connected to the hinge part 1 (771); and the bottom end of the connecting rod (772) is rotatably connected to the hinge part 2 (773); the hinge part 2 (773) is arranged at the top end of the clamping block (774); the clamping block (774) is arranged at the top end of the support plate (764); the limiting rod (775) is fixed to the top end of the support plate (764); and the outer side of the limiting rod (775) is arranged inside the limiting groove (776); and the limiting groove (776) is opened at the bottom end of the clamping block (774).

4. A steam turbine temperature detection element according to claim 1, characterized in that: The interior of the fixing sleeve (73) is threaded and is threadably connected to the screw rod (74).

5. A steam turbine temperature detection element according to claim 1, characterized in that: The outer side of the rotating handle (75) is provided with anti-slip patterns.

6. A steam turbine temperature detection element according to claim 2, characterized in that: The connection block (761) is arranged in an inverted "T" shape, and the outer side of the connection block (761) is in contact with the inner wall of the connection groove (762).

7. A steam turbine temperature detection element according to claim 3, characterized in that: The inner wall of the limiting groove (776) is smoothly arranged and fits with the outer side of the limiting rod (775).

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