Mounting and fixing device for acceleration sensor of nuclear power station

Abstract

The utility model relates to the technical field of mechanical design, and discloses a nuclear power station acceleration sensor mounting and fixing device, which comprises an equipment mounting shell, a fixed mounting bracket part and a clamping magnetic suction mounting part, and the equipment mounting shell is provided with a bolt fixing hole. According to the utility model, through cooperation of the equipment heat preservation cylinder, the powerful magnetic attraction block, the limiting sliding block, the piezoelectric acceleration sensor, the armored cable, the magnetic attraction installation block, the clamping fixing block, the limiting block, the installation clamping rod, the spring, the limiting sliding groove and the installation clamping groove, rapid installation and disassembly of the sensor can be realized in a clamping and magnetic attraction combined mode; in a nuclear power station scene with a high time requirement, the installation time is saved, the working efficiency can be improved, the magnetic attraction provides a preliminary adsorption force, the clamping structure further enhances the fixing stability, and in a complex vibration environment of the nuclear power station, the dual fixing mode can better prevent the sensor from loosening or displacing.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical design, in particular to a nuclear power plant acceleration sensor installation and fixing device. Background Art

[0002] The loose parts monitoring system of nuclear power plants detects free objects and loose equipment parts in the coolant by monitoring the surface noise of reactor equipment. Its sensors are 20 piezoelectric acceleration sensors installed on site.

[0003] In the prior art, sensors are installed on the surface of equipment by magnet adsorption, but the installation method of magnet adsorption alone cannot provide a high-strength connection like bolt fixing. In the case of strong vibration or impact that may occur in nuclear power plants, sensors are prone to displacement or even fall off. For example, in the case of sudden earthquakes, magnetic adsorption installation may not ensure the stable position of the sensor. Utility Model Content

[0004] The utility model aims to provide a nuclear power plant acceleration sensor installation and fixing device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a nuclear power plant acceleration sensor installation and fixing device, comprising an equipment installation shell, a fixed installation bracket part, and a snap-on magnetic installation part, wherein the equipment installation shell is provided with a bolt fixing hole; the fixed installation bracket part is arranged on the outer wall of the equipment installation shell; the snap-on magnetic installation part is arranged inside the fixed installation bracket part.

[0006] Preferably, the fixed mounting bracket part specifically includes: a fixed mounting plate, which is arranged on the outer wall of the equipment mounting shell; a fixing bolt is threadedly connected to the fixed mounting plate, and the fixing bolt is threadedly connected to the bolt fixing hole. The setting of the fixing bolt can provide a very stable and reliable connection, ensuring that the sensor always remains in the correct position in the complex and changeable environment of the nuclear power plant and is not prone to displacement or loosening.

[0007] Preferably, the fixed mounting plate is fixedly mounted on the outer wall of the equipment mounting shell by fixing bolts, and the outer wall of the fixed mounting plate is fixedly mounted with triangular reinforcing ribs, and a supporting fixing plate is fixedly mounted between the triangular reinforcing ribs. The triangular reinforcing ribs are provided, and the triangle has stability. The triangular reinforcing ribs can effectively resist forces and vibrations from different directions, thereby ensuring that the mounting device remains stable in the complex environment of the nuclear power plant.

[0008] Preferably, a mounting plate is fixedly installed on the top of the supporting fixing plate, a mounting cylinder is connected to the mounting plate, a limiting mounting plate is fixedly installed on the inner wall of the mounting cylinder, a positioning mounting rod is fixedly installed on the outer wall of the limiting mounting plate at equal intervals, and mounting slots are opened at equal intervals on the outer wall of the top of the mounting cylinder.

[0009] Preferably, the snap-fit ​​magnetic mounting part specifically includes: an equipment insulation cylinder, which is arranged inside the mounting cylinder; a snap-fit ​​fixing block, which is fixedly mounted on the top of the mounting plate at equidistant intervals around the circumference; the equipment insulation cylinder is respectively provided with limited sliding grooves and fixed mounting grooves. When an equipment insulation cylinder is provided, the temperature inside the nuclear power plant may fluctuate greatly, and the equipment insulation cylinder can effectively reduce the impact of temperature changes on sensor performance and accuracy.

[0010] Preferably, positioning slide holes are opened at equal intervals on the circumference of the equipment insulation cylinder, and the positioning slide holes are adapted to the positioning mounting rod. A strong magnetic block is arranged inside the equipment insulation cylinder, and a limiting slider is fixedly installed at equal intervals on the outer wall of the strong magnetic block, and the limiting slider is slidably connected to the limiting slide groove. A piezoelectric acceleration sensor is fixedly installed on the top of the strong magnetic block, and the bottom of the strong magnetic block is attracted to the outer wall of the equipment mounting shell. An armored cable is fixedly connected to the top of the piezoelectric acceleration sensor, and a mounting plate is provided on the outer wall movable sleeve of the armored cable. The piezoelectric acceleration sensor is arranged, which can provide accurate measurement data in the low-speed operation monitoring of the nuclear reactor coolant pump and possible pipeline impact monitoring.

[0011] Preferably, the mounting plate is respectively provided with a cable engaging groove and a positioning hole, the cable engaging groove is engaged with the armored cable, the positioning hole is adapted to the positioning mounting rod, a supporting connecting rod is fixedly installed on the bottom outer wall of the mounting plate, the other end of the supporting connecting rod is fixedly connected with a magnetic mounting block, the magnetic mounting block is engaged with a strong magnetic block, and mounting blocks are fixedly installed at equal intervals on the circumference of the outer wall of the thermal insulation cylinder of the equipment, and a slot is provided on the mounting block.

[0012] Preferably, a circular through hole is provided inside the locking block, a limit block is fixedly installed on the inner wall of the circular through hole, a rectangular through hole is provided on the limit block, a mounting rod is slidably connected to the inside of the circular through hole, a rectangular block is fixedly installed on the outer wall of the mounting rod, the rectangular block is adapted to the rectangular through hole, the mounting rod is adapted to the slot, the other end of the mounting rod is fixedly connected to a circular plate, a handle is fixedly installed on the outer wall of the circular plate, a spring is sleeved on the outer wall of the mounting rod, one end of the spring is fixedly connected to the outer wall of the circular plate, and the other end of the spring is fixedly connected to the outer wall of the locking block.

[0013] The utility model provides a nuclear power plant acceleration sensor installation and fixing device, which has the following beneficial effects:

[0014] (1) The utility model can provide a firm and stable support for the acceleration sensor by fixing the mounting plate, fixing bolts, triangular reinforcing ribs, supporting and fixing plate, mounting cylinder, mounting slot, limiting mounting plate, positioning mounting rod, and mounting plate, thereby ensuring that the sensor remains in a fixed position in the complex and changeable environment of a nuclear power plant, and can evenly disperse the vibration stress on the sensor to other parts of the mounting fixture, thereby reducing local stress concentration and the risk of damage to the sensor and the fixture.

[0015] (2) The utility model can realize the rapid installation and removal of the sensor by combining the engagement and magnetic attraction through the coordination among the equipment insulation tube, the strong magnetic block, the limit slider, the piezoelectric acceleration sensor, the armored cable, the magnetic mounting block, the snap-fit ​​fixing block, the limit block, the mounting clamp rod, the spring, the limit slide groove and the mounting clamp groove. In the scenario of nuclear power plant where time is high, saving installation time can improve work efficiency. The magnetic attraction provides the initial adsorption force, and the snap-fit ​​structure further enhances the stability of the fixation. In the complex vibration environment of the nuclear power plant, this double fixing method can better prevent the sensor from loosening or displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a frontal perspective view of the overall structure of the utility model;

[0017] Figure 2 This is a partial view of the mounting bracket of the utility model;

[0018] Figure 3 This is a partial view of the magnetic mounting part of the utility model;

[0019] Figure 4 This is a partial view of the installation clamp rod of the utility model.

[0020] In the figure: 1 equipment installation shell, 2 installation bracket part, 211 fixed installation plate, 212 fixing bolts, 213 triangular reinforcement ribs, 214 support fixing plate, 215 installation cylinder, 216 installation slot, 217 limit installation plate, 218 positioning installation rod, 219 installation plate, 3 snap-fit ​​magnetic installation part, 311 equipment insulation cylinder, 312 installation block, 313 strong magnetic block, 314 limit slider, 315 piezoelectric acceleration sensor, 316 armored cable, 317 installation fixing plate, 318 support connecting rod, 319 magnetic installation block, 3111 snap-fit ​​fixing block, 3112 limit block, 3113 installation rod, 3114 spring, 3115 round plate, 3116 handle, 3117 limit slide groove, 3118 installation slot. DETAILED DESCRIPTION

[0021] 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.

[0022] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0023] Example 1

[0024] A preferred embodiment of a nuclear power plant acceleration sensor installation and fixing device provided by the utility model is as follows: Figure 1-4 As shown: a nuclear power plant acceleration sensor installation and fixing device, including an equipment installation shell 1, a fixed installation bracket part 2, and a snap-on magnetic installation part 3, the equipment installation shell 1 is provided with a bolt fixing hole; the fixed installation bracket part 2 is arranged on the outer wall of the equipment installation shell 1; the snap-on magnetic installation part 3 is arranged inside the fixed installation bracket part 2.

[0025] The fixed mounting bracket part 2 specifically includes: a fixed mounting plate 211, which is arranged on the outer wall of the equipment mounting housing 1; a fixing bolt 212 is threadedly connected to the fixed mounting plate 211, and the fixing bolt 212 is threadedly connected to the bolt fixing hole.

[0026] The fixed installation plate 211 is fixedly installed on the outer wall of the equipment installation housing 1 by means of fixing bolts 212 . The outer wall of the fixed installation plate 211 is fixedly installed with triangular reinforcing ribs 213 , and supporting fixing plates 214 are fixedly installed between the triangular reinforcing ribs 213 .

[0027] A mounting plate 219 is fixedly installed on the top of the support fixing plate 214, and a mounting cylinder 215 is connected to the mounting plate 219. A limiting mounting plate 217 is fixedly installed on the inner wall of the mounting cylinder 215, and a positioning mounting rod 218 is fixedly installed on the outer wall of the limiting mounting plate 217 at equal intervals. Mounting slots 216 are opened at equal intervals on the outer wall of the top of the mounting cylinder 215.

[0028] During the process of this embodiment, the fixing bolt 212 is manually turned to fix the fixing mounting plate 211 on the outer wall of the equipment mounting shell 1. After the installation is completed, the equipment insulation cylinder 311 is slidably installed in the interior of the mounting cylinder 215 through the positioning slide hole. The installation block 312 is engaged with the mounting slot 216 to limit the installation. This can provide a firm and stable support for the acceleration sensor, ensure that the sensor remains in a fixed position in the complex and changeable environment of the nuclear power plant, and evenly disperse the vibration stress on the sensor to other parts of the mounting fixture, thereby reducing local stress concentration and reducing the risk of damage to the sensor and the fixture.

[0029] Example 2

[0030] On the basis of Example 1, a preferred embodiment of a nuclear power plant acceleration sensor installation and fixing device provided by the utility model is as follows: Figure 1-4 As shown: the snap-fit ​​magnetic mounting part 3 specifically includes: an equipment insulation cylinder 311, which is arranged inside the mounting cylinder 215; a snap-fit ​​fixing block 3111, which is fixedly installed on the top of the mounting plate 219 at equal intervals around the circumference; and a limiting sliding groove 3117 and a fixed mounting groove 3118 are respectively provided on the equipment insulation cylinder 311.

[0031] Positioning slide holes are equidistantly provided on the circumference of the equipment insulation cylinder 311, and the positioning slide holes are adapted to the positioning installation rod 218. A strong magnetic block 313 is arranged inside the equipment insulation cylinder 311, and a limiting slider 314 is fixedly installed on the outer wall of the strong magnetic block 313 at equidistant intervals. The limiting slider 314 is slidably connected to the limiting slide groove 3117, and a piezoelectric acceleration sensor 315 is fixedly installed on the top of the strong magnetic block 313. The bottom of the strong magnetic block 313 is attracted to the outer wall of the equipment installation shell 1, and the top of the piezoelectric acceleration sensor 315 is fixedly connected to an armored cable 316, and the outer wall of the armored cable 316 is movably sleeved with an installation fixing plate 317.

[0032] The mounting plate 317 is respectively provided with a cable engaging groove and a positioning hole, the cable engaging groove is engaged with the armored cable 316, the positioning hole is adapted to the positioning mounting rod 218, a supporting connecting rod 318 is fixedly installed on the bottom outer wall of the mounting plate 317, the other end of the supporting connecting rod 318 is fixedly connected with a magnetic mounting block 319, the magnetic mounting block 319 is attracted to the strong magnetic block 313, and mounting blocks 312 are fixedly installed at equal intervals on the circumference of the outer wall of the equipment insulation tube 311, and a slot is provided on the mounting block 312.

[0033] A circular through hole is provided inside the locking and fixing block 3111, and a limit block 3112 is fixedly installed on the inner wall of the circular through hole. A rectangular through hole is provided on the limit block 3112, and a mounting rod 3113 is slidably connected inside the circular through hole. A rectangular block is fixedly installed on the outer wall of the mounting rod 3113, and the rectangular block is matched with the rectangular through hole. The mounting rod 3113 is matched with the slot, and the other end of the mounting rod 3113 is fixedly connected with a circular plate 3115, and a handle 3116 is fixedly installed on the outer wall of the circular plate 3115. A spring 3114 is sleeved on the outer wall of the mounting rod 3113, and one end of the spring 3114 is fixedly connected to the outer wall of the circular plate 3115, and the other end of the spring 3114 is fixedly connected to the outer wall of the locking and fixing block 3111.

[0034] During the present embodiment, the handle 3116 is manually turned to drive the installation clamp rod 3112 to rotate through the circular plate 3115, and the rectangular clamp block is aligned with the rectangular clamp slot during rotation. Then the handle 3116 is released, and the elastic force of the spring 3114 drives the installation clamp rod 3113 to engage with the clamp slot through the circular through hole, thereby further fixing the equipment insulation cylinder 311. The sensor can be quickly installed and disassembled by combining the engagement and magnetic attraction. In a scenario such as a nuclear power plant where time is high, saving installation time can improve work efficiency. The magnetic attraction provides a preliminary adsorption force, and the engagement structure further enhances the stability of the fixation. In the complex vibration environment of a nuclear power plant, this double fixing method can better prevent the sensor from loosening or displacement.

[0035] Working principle: First, manually turn the fixing bolts 212 to fix the fixing mounting plate 211 on the outer wall of the equipment mounting housing 1. After the installation is completed, slide the equipment insulation cylinder 311 through the positioning slide hole to install it inside the mounting cylinder 215. The installation block 312 is engaged with the installation slot 216 to limit the installation. Then, manually turn the handle 3116 to drive the installation clamping rod 3112 to rotate through the circular plate 3115. During rotation, align the rectangular clamping block with the rectangular slot. Then release the handle 3116. Drive the installation clamping rod 3113 through the circular through hole and engage with the slot through the elastic force of the spring 3114 to lock the equipment. The insulation tube 311 is further fixed, and then the strong magnetic block 313 is placed inside the insulation tube 311 of the equipment through the limit slider 314, and then the strong magnetic block 313 is adsorbed on the outer wall of the equipment installation shell 1, and then the installation fixing plate 3117 is engaged with the armored cable 316 through the cable engagement groove, and then the installation fixing plate 3117 is engaged and installed inside the insulation tube 311 of the equipment through the installation slot 3118 and the positioning installation rod 218, and the installation fixing plate 3117 is secondarily fixed to the piezoelectric acceleration sensor 315 by the magnetic attraction mounting block 319 and the strong magnetic block 3113.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A nuclear power plant acceleration sensor installation and fixing device, comprising an equipment installation housing (1), a fixed installation bracket (2), and a snap-fit ​​magnetic installation portion (3), characterized in that: The device installation shell (1) is provided with a bolt fixing hole; the fixed installation bracket part (2) is arranged on the outer wall of the device installation shell (1); and the snap-fit ​​magnetic attraction installation part (3) is arranged inside the fixed installation bracket part (2).

2. A nuclear power plant acceleration sensor installation and fixing device according to claim 1, characterized in that: The fixed mounting bracket part (2) specifically comprises: A fixed mounting plate (211) is arranged on the outer wall of the device mounting housing (1); A fixing bolt (212) is threadedly connected to the fixing installation plate (211), and the fixing bolt (212) is threadedly connected to the bolt fixing hole.

3. A nuclear power plant acceleration sensor installation and fixing device according to claim 2, characterized in that: The fixed installation plate (211) is fixedly installed on the outer wall of the equipment installation housing (1) by means of fixing bolts (212); the outer wall of the fixed installation plate (211) is fixedly installed with triangular reinforcing ribs (213); and supporting fixing plates (214) are fixedly installed between the triangular reinforcing ribs (213).

4. A nuclear power plant acceleration sensor installation and fixing device according to claim 3, characterized in that: A mounting plate (219) is fixedly mounted on the top of the support fixing plate (214), a mounting cylinder (215) is connected to the mounting plate (219), a limit mounting plate (217) is fixedly mounted on the inner wall of the mounting cylinder (215), positioning mounting rods (218) are fixedly mounted on the outer wall of the limit mounting plate (217) at equal intervals, and mounting slots (216) are opened at equal intervals on the outer wall of the top of the mounting cylinder (215).

5. The nuclear power plant acceleration sensor installation and fixing device according to claim 1, characterized in that: The snap-fit ​​magnetic mounting portion (3) specifically comprises: An equipment heat preservation cylinder (311) is arranged inside the installation cylinder (215); A snap-fit ​​fixing block (3111) is fixedly mounted on the top of the mounting plate (219) at equal distances around the circumference; The equipment heat-insulating cylinder (311) is provided with a limiting sliding groove (3117) and a fixed installation slot (3118) respectively.

6. A nuclear power plant acceleration sensor installation and fixing device according to claim 5, characterized in that: Positioning sliding holes are equidistantly provided on the circumference of the equipment heat preservation tube (311), and the positioning sliding holes are adapted to the positioning installation rod (218). A strong magnetic attraction block (313) is arranged inside the equipment heat preservation tube (311). A limiting slider (314) is fixedly installed on the outer wall of the strong magnetic attraction block (313) at equidistant intervals. The limiting slider (314) is slidably connected to the limiting slide groove (3117). A piezoelectric acceleration sensor (315) is fixedly installed on the top of the strong magnetic attraction block (313). The bottom of the strong magnetic attraction block (313) is attracted to the outer wall of the equipment installation shell (1). An armored cable (316) is fixedly connected to the top of the piezoelectric acceleration sensor (315), and a mounting fixing plate (317) is movably sleeved on the outer wall of the armored cable (316).

7. A nuclear power plant acceleration sensor installation and fixing device according to claim 6, characterized in that: The installation fixing plate (317) is respectively provided with a cable engaging groove and a positioning hole, the cable engaging groove is engaged with the armored cable (316), and the positioning hole is adapted to the positioning installation rod (218). A support connecting rod (318) is fixedly installed on the bottom outer wall of the installation fixing plate (317), and a magnetic attraction installation block (319) is fixedly connected to the other end of the support connecting rod (318), and the magnetic attraction installation block (319) is attracted to the strong magnetic attraction block (313). The outer wall of the equipment insulation cylinder (311) is equidistantly fixedly provided with installation blocks (312), and the installation blocks (312) are provided with slots.

8. The nuclear power plant acceleration sensor installation and fixing device according to claim 7, characterized in that: A circular through hole is provided inside the locking and fixing block (3111), a limit block (3112) is fixedly installed on the inner wall of the circular through hole, a rectangular through hole is provided on the limit block (3112), a mounting clamping rod (3113) is slidably connected inside the circular through hole, a rectangular clamping block is fixedly installed on the outer wall of the mounting clamping rod (3113), the rectangular clamping block is matched with the rectangular through hole, the mounting clamping rod (3113) is matched with the clamping slot, a circular plate (3115) is fixedly connected to the other end of the mounting clamping rod (3113), a handle (3116) is fixedly installed on the outer wall of the circular plate (3115), a spring (3114) is sleeved on the outer wall of the mounting clamping rod (3113), one end of the spring (3114) is fixedly connected to the outer wall of the circular plate (3115), and the other end of the spring (3114) is fixedly connected to the outer wall of the locking and fixing block (3111).

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