Device for detecting primary frequency modulation performance of thermal power generating unit

Abstract

The utility model discloses a thermal power generating unit primary frequency modulation performance detection device, which comprises a frequency detector, a protection mechanism and a heat dissipation mechanism, the protection mechanism is arranged on the outer side of the frequency detector, and the heat dissipation mechanism is arranged at the side end of the protection mechanism; according to the device for detecting the primary frequency modulation performance of the thermal power generating unit, a metal barrier plate and a filter screen which are slidably connected to a second sliding groove are matched with a heat dissipation mechanism, and an electromagnetic shielding net is covered by the metal barrier plate under the outdoor condition, so that a frequency detector is integrally wrapped in metal, external electromagnetic interference can be effectively blocked, and the service life of the frequency detector is prolonged. And external dust is prevented from entering the frequency detector through the electromagnetic shielding net, signal transmission interference and short circuit and electric leakage caused by some conductive substances contained in the dust are avoided, the measurement accuracy is improved, and the equipment fault possibility is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to power detection technical field, concretely is a kind of thermal power unit primary frequency modulation performance detection device. BACKGROUND

[0002] Thermal power unit primary frequency modulation refers to when the frequency of electric power system changes, the speed regulating system of thermal power unit automatically changes air intake, water intake etc., thereby adjusting the output power of unit, the load change of unit to adapt to the change of power grid frequency, the process of maintaining the stability of power grid frequency.

[0003] In order to ensure the stable operation of electric power system, the primary frequency modulation performance of thermal power unit needs to be detected, in the existing equipment, in order to high-precision measurement and facilitate long-term stability monitoring, detection is usually carried out in special compartment, its internal environment temperature and humidity are stable in specific range and have good electromagnetic shielding environment, which helps to reduce the influence of environmental factors on the accuracy of measuring instrument, part of equipment is fully set with metal wrapping, which is convenient for preventing electromagnetic interference, but the metal is wrapped in all directions, and the internal electronic components are difficult to dissipate heat for a long time, which will affect the heat dissipation and insulation performance of components, thereby accelerating the aging of components.

[0004] Aged components may have performance degradation, frequent failures and other problems, reducing the reliability of power analyzer, thereby affecting the detection equipment, so that the dynamic response of equipment is insufficient, in order to ensure the performance of equipment, the equipment needs to be maintained, but the detection device is a precise measuring equipment, resulting in high maintenance cost.

[0005] Since the equipment generally works in a special compartment, the compartment has good electromagnetic shielding environment, so that part of the equipment is provided with a heat dissipation hole at the side end, so as to facilitate heat dissipation of the equipment in the process of long-term detection, but when abnormal situation occurs in thermal power unit primary frequency modulation, such as sudden frequency fluctuation, slow frequency response and other emergency situations, the technician needs to carry the equipment to the outside and measure the frequency signal in real time near the unit.

[0006] Thermal power unit mainly uses coal as fuel, and a large amount of dust and particulate matter is generated in the combustion process, and the existing equipment has heat dissipation hole at the side end when detecting in the outside, so that dust enters the equipment when working in the outside, and dust accumulates on the electronic components, which may interfere with signal transmission and affect electrical performance.

[0007] The existing equipment is difficult to flexibly respond to the situation of outside and indoor, and the flexibility of the equipment is low, and the existing equipment is provided with a cooling fan, but the vibration of the cooling fan drives the vibration of the instrument, thereby affecting the detection accuracy of the instrument.

[0008] The utility model provides a kind of thermal power generating unit primary frequency modulation performance detection device to solve above problems. Utility model contents

[0009] In view of the deficiencies of the prior art, the utility model provides a kind of thermal power generating unit primary frequency modulation performance detection device, solves above problems.

[0010] To achieve the above object, the utility model is realized by the following technical scheme: a kind of thermal power generating unit primary frequency modulation performance detection device, including frequency detector, further including protection mechanism and heat dissipation mechanism, the protection mechanism is set on the outside of frequency detector, the heat dissipation mechanism is set in the side end of protection mechanism;

[0011] The protection mechanism includes protective support, and the protective support is movably arranged on the outside of the frequency detector.

[0012] The heat dissipation mechanism includes rubber cushion, spring damper and heat dissipation fan, the second ring is fixedly connected to the end of the spring damper away from the rubber cushion, and the heat dissipation fan is arranged in the second ring.

[0013] Preferably, the bottom end of the protective support is provided with two notches, and the side end of the protective support is provided with two first sliding grooves.

[0014] Preferably, a sliding rod is slidably connected to the first sliding groove, a fixed rod is fixedly connected to the end of the sliding rod away from the protective support, and a rotating rod is rotatably connected to the middle part of the fixed rod.

[0015] Preferably, a fixed circular rod handle is rotatably connected to the end of the rotating rod away from the fixed rod, a second sliding groove and a third sliding groove are respectively arranged on the upper surface and the lower surface of the side end of the protective support, the third sliding groove is arranged at the end of the second sliding groove away from the frequency detector, and the notch is arranged at the side end of the second sliding groove.

[0016] Preferably, the heat dissipation mechanism further includes a square frame, sliding blocks are arranged on the upper surface and the lower surface of the square frame, and the square frame is slidably connected to the third sliding groove through the sliding blocks.

[0017] Preferably, the rubber cushion is arranged in the square frame, a first ring is fixedly connected to the inner side of the rubber cushion, and the end of the spring damper away from the second ring is fixedly connected to the inner side of the first ring.

[0018] Preferably, the heat dissipation mechanism further includes a filter screen, the filter screen is slidably connected to the second sliding groove, and the diameter of the heat dissipation holes of the filter screen is 3mm.

[0019] Preferably, an electromagnetic shielding net is arranged at the side end of the frequency detector.

[0020] Preferably, the second sliding groove is slidably connected with a metal barrier plate, and the material of the metal barrier plate is selected from copper.

[0021] Preferably, a filter is arranged near the electromagnetic shielding net inside the frequency detector.

[0022] Beneficial effects

[0023] The utility model provides a kind of thermal power generating unit primary frequency modulation performance detection device.Compared with prior art, it has the following beneficial effects:

[0024] (1) a kind of thermal power generating unit primary frequency modulation performance detection device, through the cooperation of heat dissipation mechanism of metal barrier plate and filter screen slidably connected on the second sliding groove, electromagnetic shielding net is covered by metal barrier plate in outdoor condition, so that frequency detector is wrapped in metal as a whole, so that it can effectively block external electromagnetic interference, prevent external dust from entering the frequency detector through electromagnetic shielding net, avoid interference signal transmission and the possibility of short circuit and electric leakage caused by some conductive substances in dust, improve the accuracy of measurement and reduce the possibility of equipment failure.

[0025] (2) a kind of thermal power generating unit primary frequency modulation performance detection device, by the cooperation of filter screen and metal barrier plate slidably connected on the second sliding groove and square frame slidably connected on the third sliding groove arranged in the protection mechanism, the overall device is convenient to adjust and use in different conditions, improve the flexibility of device use.

[0026] (3) a kind of thermal power generating unit primary frequency modulation performance detection device, by starting heat dissipation fan at both ends in sequence, the heat dissipation fan at one end of frequency detector is opened, the heat dissipation fan at the other end of frequency detector is moved to offset electromagnetic shielding net, heat dissipation inside frequency detector, when replacing the direction of dust removal, the heat dissipation fan at the other end of frequency detector is started and the heat dissipation fan at one end of frequency detector is moved to offset electromagnetic shielding net, by changing the direction of heat dissipation and dust removal, avoid local uneven heat dissipation, and enhance the effect of cleaning internal dust, reduce dust accumulation in a certain area.

[0027] (4) a kind of thermal power generating unit primary frequency modulation performance detection device, by rubber cushion and spring damper, to reduce the influence of frequency detector vibration caused by heat dissipation fan movement.

[0028] (5) a kind of thermal power generating unit primary frequency modulation performance detection device, by setting electromagnetic shielding net, metal barrier plate and filter, further reduce the interference of electromagnetic on frequency detector, guarantee detection accuracy

[0029] (6) a kind of thermal power generating unit primary frequency modulation performance detection device, by protection mechanism, the outside of frequency detector is protected, avoid equipment falling from hand to cause frequency detector damage, and through fixed round rod handle, it is convenient to carry. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is the overall mechanism side view of the utility model;

[0031] Figure 2 is the heat dissipation mechanism structure side view of the utility model;

[0032] Figure 3 is the protection mechanism structure side view of the utility model;

[0033] Figure 4 is the notch structure view of the utility model;

[0034] Figure 5 is the heat dissipation mechanism structure view of the utility model;

[0035] Figure 6 is the Figure 3 partial A structure view.

[0036] 1, frequency detector in the drawing;

[0037] Protection mechanism: 21, protection support;22, notch;24, first sliding groove;25, sliding rod;26, fixed rod;27, rotating rod;28, fixed round rod handle;29, second sliding groove;291, third sliding groove;

[0038] Heat dissipation mechanism: 31, square frame;32, rubber cushion;33, first circular ring;34, second circular ring;35, spring damper;36, heat dissipation fan;37, filter screen;

[0039] 4, electromagnetic shielding net;5, metal barrier plate. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0041] Embodiment one:

[0042] Please refer to Figures 1-6 A kind of thermal power generating unit primary frequency modulation performance detection device, including frequency detector 1, still include protection mechanism and heat dissipation mechanism, protection mechanism is set to the outside of frequency detector 1, heat dissipation mechanism is set to the side end of protection mechanism;

[0043] The protection mechanism comprises a protection support 21 movably arranged outside the frequency detector 1; the protection support 21 is a frame-shaped structure for accommodating the frequency detector 1; the frequency detector 1 is placed in the protection support 21, and no connection relationship is formed between the two.

[0044] The heat dissipation mechanism comprises a rubber cushion 32, a spring damper 35 and a heat dissipation fan 36; the spring damper 35 is fixedly connected with a second circular ring 34 at an end away from the rubber cushion 32; and the heat dissipation fan 36 is arranged inside the second circular ring 34.

[0045] The bottom end of the protection support 21 is provided with two notches 22; and the side end of the protection support 21 is provided with two first sliding grooves 24.

[0046] The first sliding groove 24 is slidably connected with a sliding rod 25; the end of the sliding rod 25 away from the protection support 21 is fixedly connected with a fixed rod 26; and the middle part of the fixed rod 26 is rotatably connected with a rotating rod 27.

[0047] The end of the rotating rod 27 away from the fixed rod 26 is rotatably connected with a fixed circular rod handle 28; the side end of the protection support 21 is respectively provided with a second sliding groove 29 and a third sliding groove 291 from top to bottom; the third sliding groove 291 is arranged at an end of the second sliding groove 29 away from the frequency detector 1; and the notch 22 is arranged at the side end of the second sliding groove 29.

[0048] The heat dissipation mechanism further comprises a square frame 31; the square frame 31 is provided with sliding blocks from top to bottom; and the square frame 31 is slidably connected with the third sliding groove 291 through the sliding blocks.

[0049] The rubber cushion 32 is arranged in the square frame 31; the inner side of the rubber cushion 32 is fixedly connected with a first circular ring 33; and the end of the spring damper 35 away from the second circular ring 34 is fixedly connected to the inner side of the first circular ring 33.

[0050] The heat dissipation mechanism further comprises a filter screen 37; the filter screen 37 is slidably connected with the second sliding groove 29; and the heat dissipation hole of the filter screen 37 has a diameter of 3 mm.

[0051] The side end of the frequency detector 1 is provided with an electromagnetic shielding net 4.

[0052] The second sliding groove 29 is slidably connected with a metal barrier plate 5; and the material of the metal barrier plate 5 is copper.

[0053] The inner side of the frequency detector 1 is provided with a filter near the electromagnetic shielding net 4.

[0054] Working process: when the frequency detector 1 needs to be carried:

[0055] The frequency detector 1 is slid into the protective support 21, and then the fixed round rod handle 28 is pulled to facilitate carrying the frequency detector 1 and protecting the frequency detector 1 by the protective support 21.

[0056] When the primary frequency modulation of the thermal power unit is abnormal, and the instrument needs to be carried outside for detection:

[0057] For short-term use outside, the filter screen 37 is manually slid to deviate from the electromagnetic shielding net 4, and then the metal blocking plate 5 is manually slid to face the electromagnetic shielding net 4, so as to cover the electromagnetic shielding net 4, so that the frequency detector 1 is wrapped in metal, thereby effectively blocking external electromagnetic interference and preventing external dust from entering the frequency detector 1 through the electromagnetic shielding net 4, avoiding interference with signal transmission and the possibility of short circuit and electric leakage caused by some conductive substances in the dust, improving the accuracy of measurement and reducing the possibility of equipment failure.

[0058] When working normally in the daily compartment:

[0059] The device is set in the compartment, and long-term work generates heat inside the instrument, which reduces the performance of electronic components. The metal blocking plate 5 on one side of the frequency detector 1 is manually moved away from the electromagnetic shielding net 4, and then the filter screen 37 is manually moved to face the electromagnetic shielding net 4. The square frame 31, the filter screen 37 and the metal blocking plate 5 on the other side of the frequency detector 1 are adjusted to deviate from the facing side of the electromagnetic shielding net 4 to reduce the interference of air flow circulation. The cooling fan 36 is started, and the rotation of the cooling fan 36 causes vibration, which is sequentially reduced by the rubber cushion 32 and the spring damper 35 to reduce the influence of the cooling fan 36 on the frequency detector 1. The cold air flow generated by the cooling fan 36 is filtered by the filter screen 37 to reduce dust entering the frequency detector 1. The air flow passes through the electromagnetic shielding net 4 on one side of the frequency detector 1, and the air flow is discharged from the electromagnetic shielding net 4 on the other side. The heat inside the frequency detector 1 is taken outside through the air flow, and the dust inside the frequency detector 1 can also be blown outside the frequency detector 1 through the air flow. The filter screen 37 can be taken out through the rubber cushion 32, which facilitates cleaning the dust on the filter screen 37. When passing through the electromagnetic shielding net 4, the electromagnetic shielding net 4 reduces external electromagnetic interference, and the filter further reduces external electromagnetic interference.

[0060] The heat dissipation fans 36 at both ends are started in turn, the heat dissipation fan 36 at one end of the frequency detector 1 is opened, the heat dissipation fan 36 at the other end of the frequency detector 1 is moved to offset the electromagnetic shielding net 4, the inside of the frequency detector 1 is cooled, when the direction of heat dissipation and dust removal is changed, the heat dissipation fan 36 at the other end of the frequency detector 1 is started and the heat dissipation fan 36 at one end of the frequency detector 1 is moved to offset the electromagnetic shielding net 4, through changing the direction of heat dissipation and dust removal, local uneven heat dissipation is avoided, the effect of cleaning the internal dust is enhanced, and dust accumulation in a certain area is reduced.

[0061] The filter screen 37 and the metal blocking plate 5 which are slidably connected on the second sliding groove 29 in the protection mechanism cooperate with the square frame 31 which is slidably connected on the third sliding groove 291, so that the whole is convenient to adjust the device to be used in different situations, and the flexibility of the device is improved.

[0062] Meanwhile, the contents not described in detail in the specification all belong to the prior art known by those skilled in the art.

[0063] It should be noted that, in this paper, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0064] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the primary frequency modulation performance of a thermal power unit, comprising a frequency detector (1), characterized in that, It also includes a protection mechanism and a heat dissipation mechanism, the protection mechanism is arranged outside the frequency detector (1), and the heat dissipation mechanism is arranged at the side end of the protection mechanism; The protection mechanism comprises a protection support (21), which is movably arranged outside the frequency detector (1); The heat dissipation mechanism comprises a rubber cushion (32), a spring damper (35) and a heat dissipation fan (36), one end of the spring damper (35) away from the rubber cushion (32) is fixedly connected with a second circular ring (34), and the heat dissipation fan (36) is arranged in the second circular ring (34).

2. The device for detecting the primary frequency modulation performance of a thermal power generating unit according to claim 1, characterized in that: Two notches (22) are arranged at the bottom end of the protection support (21), and two first sliding grooves (24) are arranged at the side end of the protection support (21).

3. The device for detecting the primary frequency modulation performance of a thermal power generating unit according to claim 2, characterized in that: A sliding rod (25) is slidably connected to the first sliding groove (24), one end of the sliding rod (25) away from the protection support (21) is fixedly connected with a fixed rod (26), and a rotating rod (27) is rotatably connected to the middle portion of the fixed rod (26).

4. The device for detecting the primary frequency modulation performance of a thermal power generating unit according to claim 3, characterized in that: One end of the rotating rod (27) away from the fixed rod (26) is rotatably connected with a fixed circular rod handle (28), and a second sliding groove (29) and a third sliding groove (291) are arranged on the side end of the protection support (21) in an up-down manner, the third sliding groove (291) is arranged at one end of the second sliding groove (29) away from the frequency detector (1), and the notch (22) is arranged at the side end of the second sliding groove (29).

5. The device for detecting the primary frequency modulation performance of a thermal power generating unit according to claim 1, characterized in that: The heat dissipation mechanism further comprises a square frame (31), and the square frame (31) is slidably connected to the third sliding groove (291) through the sliding blocks.

6. The device for detecting the primary frequency modulation performance of a thermal power generating unit according to claim 5, characterized in that: The rubber cushion (32) is arranged in the square frame (31), a first circular ring (33) is fixedly connected to the inner side of the rubber cushion (32), and the spring damper (35) is fixedly connected to the inner side of the first circular ring (33) away from the second circular ring (34).

7. The device for detecting the primary frequency modulation performance of a thermal power generating unit according to claim 6, characterized in that: The heat dissipation mechanism further comprises a filter screen (37), the filter screen (37) is slidably connected to the second sliding groove (29), and the heat dissipation holes of the filter screen (37) have a diameter of 3 mm.

8. The device for detecting the primary frequency modulation performance of a thermal power generating unit according to claim 1, characterized in that: The frequency detector (1) is provided with an electromagnetic shielding net (4) at the side end.

9. The device for detecting the primary frequency modulation performance of a thermal power generating unit according to claim 4, characterized in that: A metal blocking plate (5) is slidably connected to the second sliding groove (29), and the material of the metal blocking plate (5) is copper.

10. The device for detecting the primary frequency modulation performance of a thermal power generating unit according to claim 8, characterized in that: A filter is arranged on the inner side of the frequency detector (1) near the electromagnetic shielding net (4).

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