CN107154539A - A kind of temperature alarm wire clamp - Google Patents
A kind of temperature alarm wire clamp Download PDFInfo
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- CN107154539A CN107154539A CN201610122960.4A CN201610122960A CN107154539A CN 107154539 A CN107154539 A CN 107154539A CN 201610122960 A CN201610122960 A CN 201610122960A CN 107154539 A CN107154539 A CN 107154539A
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- 229910045601 alloy Inorganic materials 0.000 claims abstract description 26
- 239000000956 alloy Substances 0.000 claims abstract description 26
- 238000002844 melting Methods 0.000 claims abstract description 20
- 238000013021 overheating Methods 0.000 claims abstract description 19
- 239000004744 fabric Substances 0.000 claims abstract description 16
- 239000004020 conductor Substances 0.000 claims abstract description 7
- 230000008018 melting Effects 0.000 claims description 15
- 229910000743 fusible alloy Inorganic materials 0.000 claims description 7
- 239000000155 melt Substances 0.000 claims description 4
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000003086 colorant Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 13
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- 238000001514 detection method Methods 0.000 abstract description 4
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- 229910001285 shape-memory alloy Inorganic materials 0.000 description 4
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- 238000001931 thermography Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/06—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using melting, freezing, or softening
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
Abstract
本发明提供一种过热报警线夹，涉及电力设备领域，用于解决电网运行中线夹故障过热监测报警问题，实现：1、不误报和漏报，减轻运行工作量；2、经久耐用；3、保持现有线夹的外观构造，节能环保；4、报警状态可以保持；5、报警指示明显；6、不增加安装步骤，简便、牢固；7、减少热量传递环节，检测精度公差小于正负1摄氏度；8、结构简单，成本低廉；9、免维护。其特征在于线夹导体构件内置至少一圆柱孔洞，先后压缩装入一弹簧及穿接在弹簧末端的一警示布，孔洞口用低熔点合金盖密封，当线夹发热达到低熔点合金熔点时，低熔点合金盖熔化，警示布被弹簧弹出孔洞并展开，警示线夹发生了过热。
The invention provides an overheating alarm clamp, which relates to the field of electric equipment and is used to solve the problem of overheating monitoring and alarming of the grid clamp failure in the middle of the operation of the power grid, so as to realize: 1. No false alarms or missed alarms, reducing the workload of operation; 2. Durable; 3. 1. Keep the appearance and structure of the existing wire clamp, energy saving and environmental protection; 4. The alarm state can be maintained; 5. The alarm indication is obvious; 6. No additional installation steps, simple and firm; 7. Reduce the heat transfer link, and the detection accuracy tolerance is less than plus or minus 1 8. Simple structure and low cost; 9. Maintenance-free. It is characterized in that at least one cylindrical hole is built in the conductor member of the wire clip, and a spring is compressed and inserted into a warning cloth connected at the end of the spring successively. The hole is sealed with a low-melting point alloy cover. The low-melting-point alloy cover melted, the warning cloth was ejected from the hole by the spring and unfolded, and the warning clip was overheated.
Description
技术领域 technical field
本发明涉及电力设备领域，具体涉及一种过热报警线夹。 The invention relates to the field of electric equipment, in particular to an overheat alarm clip.
背景技术 Background technique
在电力架空线路上通常采用线夹对导线进行连接。由于设备设计、产品质量、施工质量、运行工况、运行年限等原因可能导致一部分线夹出现接触不良而异常发热。根据现有设备运行规程和规范的要求，线夹出现异常发热属于缺陷，重大和紧急缺陷发生时需要尽快维修，否则可能烧断导线，引发设备甚至大面积停电事故，后果很严重。 Wire clamps are usually used to connect wires on electric overhead lines. Due to equipment design, product quality, construction quality, operating conditions, operating years and other reasons, some clamps may have poor contact and abnormal heating. According to the requirements of existing equipment operating procedures and specifications, abnormal heating of wire clips is a defect, and major and urgent defects need to be repaired as soon as possible, otherwise the wires may be blown, causing equipment or even large-scale power outages, with serious consequences.
虽然线夹发热根本原因是线夹接触电阻异常增大，但同时还与负荷电流、风速、环境温度和日照等变化因素密切相关，各种最不利因素的叠加在一起时，线夹温度会出现迅猛上升，引发事故。一般情况下，运行人员每月进行例行周期巡视，然而裸眼无法发现线夹发热现象。红外线热像仪可以发现线夹发热现象但存在携带不便、巡视时检测花费时间较多、价格高昂等因素，在一般例行巡视时没有使用。现在电力运行单位通常的做法是对一般设备半年或一年开展一次的红外线热像仪监测，对重要设备每月开展红外线热像仪监测。红外热像仪巡线检测到的是当时的线夹温度，导致很大部分发热缺陷不能及时发现，增加了故障继续恶化成为事故的几率，给电网运行带来风险。 Although the root cause of the clamp heating is the abnormal increase of the contact resistance of the clamp, it is also closely related to changing factors such as load current, wind speed, ambient temperature and sunshine. When the most unfavorable factors are superimposed together, the temperature of the clamp will appear. The rapid rise caused an accident. Under normal circumstances, the operating personnel conduct routine inspections every month, but the heating phenomenon of the wire clamp cannot be found with the naked eye. Infrared thermal imaging cameras can detect the heating phenomenon of wire clips, but they are not used in general routine inspections due to factors such as inconvenience to carry, time-consuming detection during inspections, and high prices. Now the usual practice of power operation units is to carry out infrared thermal imager monitoring for general equipment every six months or a year, and carry out infrared thermal imager monitoring for important equipment every month. The infrared thermal imaging camera detects the temperature of the wire clamp at that time, resulting in a large number of heating defects not being found in time, increasing the probability of faults continuing to deteriorate into accidents, and bringing risks to the operation of the power grid.
在现有普通线夹上安装过热报警装置是一种捕捉线夹的最大发热状态的方法，然而目前的技术方案还存在不足之处。 Installing an overheating alarm device on an existing ordinary wire clip is a method to capture the maximum heating state of the wire clip, but the current technical solution still has deficiencies.
申请号CN201510697429.5发明公开了一种电气设备发热指示器和驱动元件及其制备方法，指示器包括底座、驱动元件和与底座配合的上盖；驱动元件安装于底座和上盖之间；驱动元件材料为形状记忆合金；驱动元件在常温时为环绕形成的平面螺旋形，受热形变后驱动元件为纵向高度增加的立体螺旋形。该方案具有体积小，反应灵敏的特点，适合在狭小的设备空间安装使用。但是该技术方案如果应用在输配电线路上，则会存在如下不足之处：1、警示不明显。输电线路塔高一般在几十米，记忆金属面积太小，在弹出状态难以被地下巡线人员肉眼观察到。2、底座与上盖之间缺乏严密的密封，在野外风吹雨淋，时间长了，表面涂的警示颜色容易褪色。3、材料的温度公差通常在10°C 以上，对温度的测定准确度不够高。 Application number CN201510697429.5 discloses a heating indicator for electrical equipment, a driving element and a preparation method thereof. The indicator includes a base, a driving element and an upper cover matched with the base; the driving element is installed between the base and the upper cover; the driving The element material is a shape memory alloy; the driving element is a plane spiral formed around at normal temperature, and the driving element is a three-dimensional spiral with an increased longitudinal height after being heated and deformed. The solution has the characteristics of small size and sensitive response, and is suitable for installation and use in narrow equipment spaces. However, if this technical solution is applied to transmission and distribution lines, there will be the following deficiencies: 1. The warning is not obvious. The height of the transmission line tower is generally tens of meters, and the area of the memory metal is too small to be observed by the naked eyes of the underground patrol personnel in the pop-up state. 2. There is no tight seal between the base and the upper cover. If exposed to wind and rain in the wild, the warning color painted on the surface will fade easily after a long time. 3. The temperature tolerance of the material is usually above 10°C, and the accuracy of temperature measurement is not high enough.
申请号CN201510018197.6发明公开了电力系统高低压发热部位自动指示器，以TiNi双程记忆合金智能弹簧感温元件，通过TiNi双程记忆合金智能弹簧感知易发热的接点上的温度使TiNi双程记忆合金智能弹簧发生机械运动来控制红色指示旗的弹出来显示易发热的接点上。该技术方案存在不足之处：1、红色指示旗没有严密的密封，在野外风吹雨淋，时间长了，表面涂的警示颜色容易褪色；2、材料的温度公差通常在10°C 以上，对温度的测定准确度不够高；3、体积大，机构复杂，应用于高压输电线路上，容易发生电晕，产生无线电干扰。 Application number CN201510018197.6 discloses an automatic indicator for high and low voltage heating parts in the power system. The TiNi two-way memory alloy smart spring temperature sensing element is used to sense the temperature on the heat-prone contact through the TiNi two-way memory alloy smart spring to make the TiNi two-way The memory alloy intelligent spring produces mechanical movement to control the pop-up of the red indicator flag to show the contact points that are prone to heat. There are deficiencies in this technical solution: 1. The red indicator flag is not tightly sealed. If it is exposed to wind and rain in the wild, the warning color on the surface will fade easily after a long time; 2. The temperature tolerance of the material is usually above 10°C. The accuracy of the temperature measurement is not high enough; 3. The volume is large and the mechanism is complicated, and it is applied to the high-voltage transmission line, which is prone to corona and radio interference.
申请号201610062782.0发明提供一种设备过热报警器，其特征在于一指示布折叠并与一弹簧压缩后一起装进一瓶子，盖上一瓶盖，瓶盖与折叠布一端连接，瓶口与瓶盖的衔接处用低熔点合金焊接密封，瓶盖表面紧贴安装在被监测设备表面，当被监测设备温度高于低熔点合金熔点时，低熔点合金熔化，折叠布被压缩弹簧弹出瓶子并展开，显示报警设备发生了过热。该技术提供了一种可行的解决方案，用于解决目前电力系统现存数量庞大的普通线夹发热监测问题。但是该方案还存在如下不足之处：1、在新安装投产设备时，除了线夹之外，还需要另外采购、安装报警装置，增加了管理和施工环节，对于野外高空作业而言，费用高昂，不可忽视。2、报警装置需要与现有线夹连接的部件，存在连接处传热损耗，已及安装不够牢固的风险。3、报警装置需要与现有线夹连接的部件及独立的外壳封装，增加了产品成本。 The invention of application number 201610062782.0 provides an overheating alarm for equipment, which is characterized in that an indicating cloth is folded and compressed with a spring and packed into a bottle, covered with a bottle cap, the bottle cap is connected to one end of the folded cloth, and the bottle mouth is connected to the bottle cap The joints are welded and sealed with a low-melting-point alloy, and the surface of the bottle cap is closely attached to the surface of the monitored equipment. When the temperature of the monitored equipment is higher than the melting point of the low-melting-point alloy, the low-melting-point alloy melts, and the folding cloth is ejected from the bottle by the compressed spring and unfolded. Indicates that the alarm device has overheated. This technology provides a feasible solution to solve the problem of heat monitoring of common clamps with a large number of existing power systems. However, this solution still has the following deficiencies: 1. When newly installing and putting into production equipment, in addition to wire clips, an additional alarm device needs to be purchased and installed, which increases the management and construction links. For field high-altitude operations, the cost is high ,Can not be ignored. 2. The parts that the alarm device needs to be connected with the existing clamps have the risk of heat transfer loss at the connection, and the installation is not firm enough. 3. The alarm device needs to be connected with the existing wire clip and packaged in an independent shell, which increases the product cost.
设计一种具有过热警示功能的线夹是一个解决上述问题的技术方案，但现有技术方案还存在许多不足之处。 Designing a wire clip with an overheat warning function is a technical solution to the above-mentioned problems, but there are still many deficiencies in the existing technical solutions.
申请号CN201110116903.2发明公开了一种智能型电力联接装置，包括线夹壳体，线夹壳体内设有用于两端夹持导线的压块装置，壳体上还设有指示装置安装孔，指示装置安装孔内设有在线夹壳体过热时可弹出指示装置安装孔的指示杆。此智能型的电力联接装置在线夹壳体上的指示装置安装孔内设置了可弹出的指示杆，当由于线夹联接松动等原因使得线夹壳体上的电流增大，而导致线夹壳体过热时，指示装置安装孔内的指示杆将从孔内弹出，以便检修人员可以很直观的得知此电力联接装置或线路有安全隐患，从而进行检修。该技术方案存在如下不足之处：1、通常线夹的尺寸大约在100毫米幅度，受线夹体积限制，指示杆的长度大约在100毫米幅度，截面更小，容易被导线和线夹挡住视线，即使不被挡住，一般杆塔线路的线夹安装高度都大于10米，巡视人员在地面发现指示杆的难度很大。2、正常情况下，随着电流和环境温度等的变化，线夹温度每天都有几十度的正常变化。采用双金属片受热变形推动机构处于常态的运动状态，在没有防水防尘的工况下，如何实现在线夹使用寿命大约30年的期限内保证工作可靠性，在该技术方案中没有进一步具体提供技术方案，对于专业技术人员的理解和实现存在难度。根据运行经验，线夹发热发生的几率在0.1%级别，如果报警装置的可靠性不能高于线夹的可靠性，则误报就会是一个大概率事件，报警装置是实用性就会打折扣。3、由于装置没有完全密封，装置在野外使用会进水和灰尘，对于需要精密动作控制的元器件构成威胁，将导致难以达到架空电力设备的报废年限通常要达到20至30年的要求。 Application number CN201110116903.2 discloses an intelligent power connection device, which includes a wire clamp housing, which is provided with a pressing block device for clamping wires at both ends, and an indicating device installation hole is also provided on the housing. The indicating device mounting hole is provided with an indicating rod that can pop out of the indicating device mounting hole when the wire clip housing is overheated. This intelligent power connection device is equipped with a pop-up indicator rod in the installation hole of the indicator device on the clamp shell. When the current on the clamp shell increases due to loose connection of the clamp, the When the body is overheated, the indicator rod in the installation hole of the indicator device will pop out from the hole, so that the maintenance personnel can intuitively know that there is a potential safety hazard in the power connection device or line, and then carry out maintenance. This technical solution has the following deficiencies: 1. Usually, the size of the wire clip is about 100 mm, limited by the volume of the wire clip, the length of the indicating rod is about 100 mm, and the section is smaller, so it is easy to be blocked by the wire and the wire clip. , even if it is not blocked, the installation height of the clamps of the general tower line is greater than 10 meters, and it is very difficult for the inspectors to find the indicating rod on the ground. 2. Under normal circumstances, with the change of current and ambient temperature, the temperature of the clamp has a normal change of tens of degrees every day. The bimetal sheet is heated and deformed to push the mechanism to be in a normal state of motion. In the case of no waterproof and dustproof working conditions, how to ensure the working reliability of the cable clamp within a service life of about 30 years is not further specifically provided in this technical solution. Technical solutions are difficult for professional and technical personnel to understand and implement. According to the operating experience, the probability of heating of the cable clip is at the 0.1% level. If the reliability of the alarm device cannot be higher than that of the cable clip, false alarms will be a high probability event, and the practicability of the alarm device will be compromised. 3. Since the device is not completely sealed, water and dust will enter the device when used in the field, posing a threat to components that require precise motion control, which will make it difficult to meet the 20 to 30-year retirement period of overhead power equipment.
要实现对高压输配电线路的连接部位进行过热报警，需要解决如下问题：1、监测设备的工作可靠性必须高于高压输配电线路的连接部位的可靠性，否则误动作比设备发热故障更加频繁，无法减轻运行工作量。2、设备要经久耐用，否则要经常更换，高空作业施工费用高昂。3、监测设备体积要足够小，外形要圆滑，否则过分突出于导体之外容易发生电晕放电，产生超标的无线电干扰和可听噪声。4、温度一旦达到报警温度，报警显示要持续保持，不能在温度再次降低时，报警状态消失，否则巡线人员在输电线路负荷较低、风速较大、气温较低等情况下巡线时不能发现设备故障。5、报警显示状态要与正常状态的形状差异要足够大，否则在抬头观看时难以发现十米以上高的报警显示。6、报警指示材料应采用绝缘材料，否则当报警指示材料伸展出来时，过分突出于导体之外容易发生电晕放电，产生超标的无线电干扰和可听噪声。7、安装连接要可靠，否则安装在导线的激烈振动下容易发生松脱。8、监测装置的热敏部位与线夹发热部位的热阻要足够小，否则在高空大风状态下，热敏部位与被监测的设备温差过大，准确度下降。 In order to realize the overheating alarm on the connection parts of the high-voltage transmission and distribution lines, the following problems need to be solved: 1. The working reliability of the monitoring equipment must be higher than that of the connection parts of the high-voltage transmission and distribution lines, otherwise the malfunction will be higher than the equipment heating failure More frequently, the workload cannot be reduced. 2. The equipment must be durable, otherwise it will be replaced frequently, and the construction cost of high-altitude operations will be high. 3. The volume of the monitoring equipment should be small enough, and the shape should be smooth, otherwise it will protrude too much out of the conductor, and corona discharge will easily occur, resulting in excessive radio interference and audible noise. 4. Once the temperature reaches the alarm temperature, the alarm display should continue to be maintained. The alarm status cannot disappear when the temperature drops again, otherwise the line inspectors cannot inspect the line when the transmission line load is low, the wind speed is high, and the temperature is low. A device failure was found. 5. The shape difference between the alarm display state and the normal state must be large enough, otherwise it is difficult to find the alarm display with a height of more than ten meters when looking up. 6. The alarm indication material should be made of insulating material, otherwise when the alarm indication material is stretched out, it will protrude too much out of the conductor and corona discharge will easily occur, resulting in excessive radio interference and audible noise. 7. The installation and connection must be reliable, otherwise it is easy to loosen under the intense vibration of the wire. 8. The thermal resistance between the heat-sensitive part of the monitoring device and the heating part of the wire clip should be small enough, otherwise, in the high-altitude windy state, the temperature difference between the heat-sensitive part and the monitored equipment is too large, and the accuracy will drop.
发明内容 Contents of the invention
本发明目的在于提供一种过热报警线夹，用于解决电网运行中线夹故障过热监测报警问题，并进一步实现：1、不误报和漏报，实现比普通线夹更高的可靠性，减轻运行工作量；2、密封防腐，经久耐用；3、保持现有线夹的外观构造，不增加电晕放电和电磁涡流，节能环保；4、报警状态可以保持；5、报警指示容易被发现；6、不需要增加线夹的安装步骤，简便、牢固；7、减少热量传递环节，直接内置检测，检测精度高，公差小于正负1摄氏度，动作温度点不会漂移改变；8、结构简单，成本低廉；9、免维护。 The purpose of the present invention is to provide a kind of overheating alarm clip, which is used to solve the problem of overheating monitoring and alarming of the fault of the clip in the operation of the power grid, and further realizes: 1. No false alarms and false alarms, realizing higher reliability than ordinary clips, reducing Operation workload; 2. Sealed and anti-corrosion, durable; 3. Maintain the appearance and structure of the existing wire clamp, without increasing corona discharge and electromagnetic eddy current, energy saving and environmental protection; 4. The alarm state can be maintained; 5. The alarm indication is easy to be found; 6. , No need to increase the installation steps of wire clamps, it is simple and firm; 7. Reduce heat transfer links, directly built-in detection, high detection accuracy, tolerance is less than plus or minus 1 degree Celsius, and the action temperature point will not drift and change; 8. Simple structure, low cost Inexpensive; 9, maintenance-free.
为了实现上述目的，本发明提供了一种过热报警线夹，其特征在于线夹导体构件内置至少一圆柱孔洞，先后压缩装入一弹簧及穿接在弹簧末端的一警示布，孔洞口用低熔点合金盖密封，当线夹发热达到低熔点合金熔点时，低熔点合金盖熔化，警示布被弹簧弹出孔洞并展开，警示线夹发生了过热。 In order to achieve the above object, the present invention provides an overheat alarm clip, which is characterized in that at least one cylindrical hole is built in the conductor member of the clip, and a spring is compressed and inserted into a warning cloth connected at the end of the spring. The melting-point alloy cover is sealed. When the heat of the wire clamp reaches the melting point of the low-melting-point alloy, the low-melting-point alloy cover melts, and the warning cloth is popped out of the hole by the spring and unfolded, warning that the wire clamp is overheated.
上述的圆柱孔洞为一个或者两个，对应选取一种或两种熔点不同的低熔点合金，以及颜色不同的警示布。 There are one or two cylindrical holes mentioned above, and one or two low-melting alloys with different melting points and warning cloths with different colors are selected correspondingly.
上述的圆柱孔洞位于C型线夹的压块内。 The above-mentioned cylindrical hole is located in the pressing block of the C-shaped clamp.
上述的圆柱孔洞位于连接线夹引流板内。 The above-mentioned cylindrical hole is located in the drain plate of the connection clip.
上述的低熔点合金盖由低熔点合金构成的螺纹安装于孔洞口。 The above-mentioned low-melting-point alloy cap is installed on the opening of the hole by a thread made of low-melting-point alloy.
上述的低熔点合金盖由低熔点合金熔接安装于孔洞口。 The above-mentioned low-melting-point alloy cover is welded and installed on the opening of the hole by the low-melting-point alloy.
上述的弹簧由螺栓固定在圆柱孔洞的底部。 Above-mentioned spring is fixed on the bottom of cylinder hole by bolt.
上述的圆柱孔洞表面涂滑石粉。 The surface of the above-mentioned cylindrical hole is coated with talcum powder.
本发明的过热报警线夹，可以实现如下有益的效果：1、不需借助红外热像仪和另外安装过热报警装置，就可以实现对线夹过热故障进行警示报警，节省大量设备成本和运维成本。2、过热报警元部件的工作可靠性高。过热报警元部件没有采用螺栓连接，杜绝螺栓在振动工况下出现松动故障；没有电子元件和电池，降低在高温和低温时故障几率；低熔点合金的熔点设定范围精确，可以达到正负1摄氏度，作为热敏元件，内置在线夹内部，与线夹温度同步变化，同时又作为动作元件，弹簧的储能保持长期稳定。3、线夹本体作为过热报警元部件的外壳，并采用金属焊接密封，可以防止水气、灰尘、氧气、紫外线进入，过热报警元部件可以防止氧化、褪色老化，经久耐用，达到与普通线夹20至30年的使用寿命，避免经常更换，降低高空作业的高昂施工费用。4、不改变现有线夹外观，不会增加电晕放电、无线电干扰和可听噪声。5、线夹温度受电流、风速、气温、日照等影响很大，过热报警线夹可以全天候检测，温度一旦达到报警温度，报警显示就可以保持，即使巡线人员在线夹温度暂时降低时巡线也可以发现报警。不同于红外热像仪只检测当前温度。6、可以根据线夹的安装位置设计报警指示布的面积，即使安装在几十米高度，也可以在地面轻易发现。7、报警指示布采用绝缘材料，当报警指示材料伸展出来时，不容易发生电晕放电产生超标的无线电干扰和可听噪声。 The overheat alarm clip of the present invention can achieve the following beneficial effects: 1. It can realize the warning and alarm of the overheating fault of the clip without resorting to an infrared thermal imager and an additional overheat alarm device, saving a lot of equipment costs and operation and maintenance cost. 2. The working reliability of overheating alarm components is high. The overheating alarm components are not connected by bolts to prevent the bolts from loosening under vibration conditions; there are no electronic components and batteries, which reduces the probability of failure at high and low temperatures; the melting point setting range of low melting point alloys is accurate, which can reach plus or minus 1 Celsius, as a heat-sensitive element, is built into the wire clip and changes synchronously with the temperature of the wire clip. At the same time, it is also used as an action element, and the energy storage of the spring remains stable for a long time. 3. The cable clip body is used as the shell of the overheating alarm component, and it is sealed by metal welding, which can prevent water vapor, dust, oxygen, and ultraviolet rays from entering. The overheating alarm component can prevent oxidation, fading and aging, and is durable, reaching the same level as ordinary cable clamps. The service life of 20 to 30 years avoids frequent replacement and reduces the high construction cost of high-altitude operations. 4. It will not change the appearance of the existing wire clamp, and will not increase corona discharge, radio interference and audible noise. 5. The temperature of the line clamp is greatly affected by current, wind speed, temperature, sunshine, etc. The overheating alarm line clamp can be detected around the clock. Once the temperature reaches the alarm temperature, the alarm display can be maintained, even if the line patrol personnel patrol the line when the line clamp temperature temporarily drops Alarms can also be found. Unlike infrared thermal imaging cameras that only detect the current temperature. 6. The area of the alarm indicator cloth can be designed according to the installation position of the wire clip, even if it is installed at a height of tens of meters, it can be easily found on the ground. 7. The alarm indication cloth is made of insulating material. When the alarm indication material is stretched out, it is not easy to cause excessive radio interference and audible noise caused by corona discharge.
附图说明 Description of drawings
图1为本发明的过热报警线夹在监测状态下的结构示意图； Fig. 1 is the structural representation of the overheating alarm wire clip of the present invention under the monitoring state;
图2为本发明的过热报警线夹在报警状态下的结构示意图； Fig. 2 is the structural representation of the overheating alarm wire clip of the present invention under the alarm state;
图3为本发明的C型过热报警线夹在监测状态下的结构示意图； Fig. 3 is the structural representation of the C-type overheating alarm wire clip of the present invention under the monitoring state;
图4为本发明的耐张过热报警线夹在监测状态下的结构示意图。 Fig. 4 is a schematic structural diagram of the strain-resistant overheating alarm wire clip of the present invention in a monitoring state.
具体实施方式 detailed description
下面将参考附图并结合实施例来详细说明本发明。 The present invention will be described in detail below with reference to the accompanying drawings and examples.
如图1所示，本实施例的线夹导体构件1内置至少一圆柱孔洞2，先后压缩装入一弹簧4及穿接在弹簧4末端的一警示布3，弹簧4由螺栓5固定在圆柱孔洞2的底部，孔洞2开口处用低熔点合金盖6密封，低熔点合金盖6由低熔点合金构成的螺纹安装于圆柱孔洞2的开口处，或者进一步加热至低熔点合金盖6与圆柱孔洞2熔接安装，确保安装牢固和密封。圆柱孔洞2表面涂滑石粉，降低警示布3弹出时的摩擦力。警示布3选用绝缘、轻薄的布料或高分子薄膜材料，厚度0.06毫米，在直径为8毫米，深度为80毫米的空间可以容纳一块300毫米长、200毫米宽的警示布。 As shown in Figure 1, at least one cylindrical hole 2 is built in the cable clip conductor member 1 of this embodiment, and a spring 4 and a warning cloth 3 pierced through the end of the spring 4 are compressed and loaded successively. The spring 4 is fixed on the cylinder by bolts 5. The bottom of the hole 2, the opening of the hole 2 is sealed with a low-melting alloy cover 6, and the low-melting alloy cover 6 is threaded and installed at the opening of the cylindrical hole 2, or the low-melting alloy cover 6 and the cylindrical hole are further heated. 2 Welded installation to ensure firm and airtight installation. Talcum powder is coated on the surface of the cylindrical hole 2 to reduce the friction force when the warning cloth 3 pops up. Warning cloth 3 selects insulation, frivolous cloth or macromolecule film material for use, and thickness is 0.06 millimeter, is 8 millimeters in diameter, and depth is the space of 80 millimeters and can hold a 300 millimeters long, 200 millimeters wide warning cloths.
如图2所示，当线夹导体构件1发热达到低熔点合金熔点时，低熔点合金盖6熔化，警示布3被弹簧4弹出圆柱孔洞2并展开，警示线夹发生了过热。根据发热监测的温度不同，可以选择相应熔点的低熔点合金。低熔点合金由铋、锡、铅等金属组成，熔点范围在50至200摄氏度。低熔点合金的熔点由各种金属的比例组成确定，在低于熔点温度时具有较高的硬度，可以提供非常稳定可靠的温度监测警示，公差范围可达正负1摄氏度。在一实施例中，选用熔点为70和100摄氏度的低熔点合金，对应的选用黄色和红色警示布3。 As shown in FIG. 2 , when the clamp conductor member 1 heats up to the melting point of the low-melting alloy, the low-melting alloy cover 6 melts, and the warning cloth 3 is ejected from the cylindrical hole 2 by the spring 4 and unfolded, warning that the clamp is overheated. According to the temperature of the fever monitoring, the low melting point alloy with the corresponding melting point can be selected. Low-melting point alloys are composed of metals such as bismuth, tin, and lead, and have a melting point ranging from 50 to 200 degrees Celsius. The melting point of the low-melting point alloy is determined by the proportion of various metals. It has higher hardness when the temperature is lower than the melting point. It can provide a very stable and reliable temperature monitoring warning, and the tolerance range can reach plus or minus 1 degree Celsius. In one embodiment, low-melting-point alloys with melting points of 70 and 100 degrees Celsius are selected, and yellow and red warning cloths 3 are selected correspondingly.
如图3所示，本发明的一个具体实施例是适合10千伏架空配电线路使用的C型过热报警线夹，在一压块7内部钻一个圆柱孔洞2，或者在两压块7内部各钻一个圆柱孔洞2，低熔点合金盖6密封圆柱孔洞2，并与表面持平。 As shown in Figure 3, a specific embodiment of the present invention is a C-type overheat alarm clamp suitable for the use of 10 kV overhead power distribution lines. A cylindrical hole 2 is drilled inside a briquetting block 7, or inside two briquetting blocks 7 A cylindrical hole 2 is drilled, and the low melting point alloy cover 6 seals the cylindrical hole 2 and is flush with the surface.
如图4所示，本发明的另一个具体实施例是适合10至1000千伏架空输配电线路使用的耐张过热报警线夹，在一引流板8内部钻一个圆柱孔洞2，或者在两引流板8内部各钻一个圆柱孔洞2，低熔点合金盖6密封圆柱孔洞2，并与表面持平。 As shown in Fig. 4, another specific embodiment of the present invention is a strain-resistant overheating alarm clamp suitable for 10 to 1000 kV overhead power transmission and distribution lines. A cylindrical hole 2 is drilled inside a drain plate 8, or two A cylindrical hole 2 is drilled inside each diversion plate 8, and the low-melting point alloy cover 6 seals the cylindrical hole 2 and is flush with the surface.
上述实施例图示，仅仅针对应用本发明的技术方案做出描述，并不限定在线夹的其它部位应用现有公知的技术，如紧固件的安装，也不限定形状的改变等。根据本发明的技术方案，可以在更多种型号的导线连接部位上应用，包括变压器、避雷器、断路器、刀闸、电缆接头等设备的接头部位，在此不一一列举，也属于本发明的保护范围。 The above-mentioned embodiments are illustrated, and are only described for the application of the technical solutions of the present invention, and are not limited to the application of existing known technologies in other parts of the wire clamp, such as the installation of fasteners, and the change of shape, etc. According to the technical solution of the present invention, it can be applied to more types of wire connection parts, including the joint parts of transformers, lightning arresters, circuit breakers, knife switches, cable joints and other equipment, which are not listed here, but also belong to the present invention. scope of protection.
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| CN106525258A (en) * | 2016-11-30 | 2017-03-22 | 国网山东省电力公司东明县供电公司 | Equipment wire clamp, equipment wire clamp connecting structure and power line fault indication method |
| CN109374154A (en) * | 2018-11-26 | 2019-02-22 | 广东电网有限责任公司 | Temperature warning mechanism |
| CN109580015A (en) * | 2019-01-19 | 2019-04-05 | 徐峰 | Wire clamp temperature alarm system |
| CN111520381A (en) * | 2020-04-30 | 2020-08-11 | 广东电网有限责任公司东莞供电局 | Bolt assemblies and primary equipment |
| CN111912542A (en) * | 2020-07-02 | 2020-11-10 | 核工业西南物理研究院 | Temperature measuring method based on antimony-containing alloy |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106525258A (en) * | 2016-11-30 | 2017-03-22 | 国网山东省电力公司东明县供电公司 | Equipment wire clamp, equipment wire clamp connecting structure and power line fault indication method |
| CN106525258B (en) * | 2016-11-30 | 2019-04-30 | 国网山东省电力公司东明县供电公司 | Equipment wire clamp, equipment wire clamp connection structure and power line fault indication method |
| CN109374154A (en) * | 2018-11-26 | 2019-02-22 | 广东电网有限责任公司 | Temperature warning mechanism |
| CN109374154B (en) * | 2018-11-26 | 2020-05-05 | 广东电网有限责任公司 | Temperature warning mechanism |
| CN109580015A (en) * | 2019-01-19 | 2019-04-05 | 徐峰 | Wire clamp temperature alarm system |
| CN109580015B (en) * | 2019-01-19 | 2025-01-24 | 辽宁锦兴电力金具科技股份有限公司 | Wire clamp overheat alarm system |
| CN111520381A (en) * | 2020-04-30 | 2020-08-11 | 广东电网有限责任公司东莞供电局 | Bolt assemblies and primary equipment |
| CN111912542A (en) * | 2020-07-02 | 2020-11-10 | 核工业西南物理研究院 | Temperature measuring method based on antimony-containing alloy |
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Application publication date: 20170912 |