CN102005331B - Thermal insulation relay with dual operating points - Google Patents
Thermal insulation relay with dual operating points Download PDFInfo
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- CN102005331B CN102005331B CN2010105383079A CN201010538307A CN102005331B CN 102005331 B CN102005331 B CN 102005331B CN 2010105383079 A CN2010105383079 A CN 2010105383079A CN 201010538307 A CN201010538307 A CN 201010538307A CN 102005331 B CN102005331 B CN 102005331B
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- temperature
- contact device
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- sensitive contact
- end cap
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Abstract
The invention relates to a thermal insulation relay with dual operating points, comprising an outer shell (1) and an end cover (2). The outer shell (1) and the end cover (2) are fixedly connected into a whole through screws, the tail of the outer shell is used as a temperature sensing end, the middle of the outer surface of the outer shell is provided with threads (12), a sealing ring (4) is arranged at the upper part of the threads and internally provided with a temperature sensing contact point (5) which is stuck and fixed in the outer shell through a conductive insulating adhesive (8), two leads (6) are welded at the top end of the temperature sensing contact point (5) and upwards connected with wiring terminals (7) of the end cover (2) at the top of the outer shell (1) through screws, the temperature sensing contact point (5) is also filled with a sealing adhesive (9), a groove (10) is arranged on the outer surface of the end cover (2), an end cap (3) is connected with the end cover (2) through the groove (10), the wiring terminals (7) on the end cover (2) are covered in the end cap (3), and one side of the end cap (3) is provided with an oval outlet (11) in which connecting leads pass in and out.
Description
Technical field
The present invention relates to a kind of pair of operating point insulation relay, belong to the temperature sensor field.
Background technology
At present, in order to realize equipment water tank heat preserving or antifreeze purpose, need serviceability temperature relay monitoring water temperature in the industry.General adopt two kinds of ways, the first adopts two operating points insulation relays, and the temperature that is lower than design is connected the electric heater heating, and to be heated deenergization stops to heat to being higher than after the uniform temperature again; It two is to adopt two insulation relays, and one as low temperature contacting power supply, and one as high temperature contact deenergization.
The structure of existing two operating point insulation relays is comparatively complicated, and volume is bigger, is restricted in less space mounting.And the action contact temperature spacing of existing two operating point temperature relays can not be too little; Between 10～15 ℃ of the general operating point temperature intervals, can cause the equipment work temperature fluctuation big like this, influence equipment performance; Simultaneously, the high temperature operating point is too high also can cause waste of electric energy.And adopt two temperature relays, and respectively as low temperature and high temperature thresholding, can temperature interval be controlled in 5～10 ℃ the scope, but two devices increasing installing space, control circuit is complicated, has also increased cost.Simultaneously, existing insulation relay all can not satisfy harsh vibratory impulse requirement, the withstand voltage 1000V that is generally less than; Insulation is for 500M Ω, and when under mal-condition, two operating point insulation relays in use for some time; Can drift about even failure phenomenon by the occurrence temperature operating point, cause equipment damage.The insulation relay that for example in the harsh engine water tank of vibratory impulse condition, uses can only adopt the import device, and cost is higher; Technology is controlled by the people, also has to adopt homemade relay, but wants the periodic inspection replacing; There is hidden danger in locomotive operation, has also increased the locomotive operation maintenance cost.
Summary of the invention
Technical problem to be solved:
The invention provides a kind of pair of operating point insulation relay to above deficiency, connecting temperature is 5 ℃, 10 ℃ of break-off signals; Error ± 1.5 ℃, and can satisfy vibratory impulse, 1500V high pressure and 2000M Ω insulating requirements up to 30 g, and cost is lower; Compact conformation; Volume is very little, can be applied in the occasion that the space is narrow and small, operational environment is harsh, on express locomotive.
Technical scheme:
A kind of pair of operating point insulation relay comprises shell and end cap, and shell and end cap connect into an integral body through screw; The shell afterbody is as the temperature end of probe, and there is screw thread at the outer surface middle part, and sealing ring is arranged at screw thread top, and inside is equipped with temperature-sensitive contact device; Temperature-sensitive contact device is adhesively fixed on enclosure through thermal conductive insulation glue; Around the gap of thermal conductive insulation glue filling temperature-sensitive contact device and tail end face inner surface and the temperature-sensitive contact device and the gap between the inner surface of outer cover, the volumetric expansion of the coefficient of cubical expansion of thermal conductive insulation glue and outer cover metal and temperature-sensitive contact device metal end plane metal is close; Device top, temperature-sensitive contact is welded with two leads, and lead upwards links to each other with the binding post of cover top portion end cap through screw; The fluid sealant of on the device of temperature-sensitive contact, also having filled; At the end cap outer surface, a groove is arranged, a block links to each other with end cap through this groove, and the binding post on the end cap is housed in the block; Cap side faces has an ellipse outlet that is used to connect the electric wire turnover.
Described shell and binding post adopt the red copper material.
Nickel Plating Treatment has all been carried out on inside and outside surface of described shell and binding post surface.
Described end cap adopts polysulfone material.
Described block adopts elastomeric material.
Described shell tail end face wall thickness is less than 0.5mm.
Described temperature-sensitive contact device is that diameter is 8 to 9 millimeters a temperature-sensitive contact device.
Described temperature-sensitive contact device, connecting temperature is 5 ℃, and break-off signal is 10 ℃, and action error is ± 1.5 ℃.
Beneficial effect:
The present invention is as a kind of temperature relay; Single relay just can realize that low temperature connects the control of breaking off two operating points with high temperature, be incubated the relay volumes than in the past two operating points and reduce half, and the operating point error is little; High temperature and low temperature are little at interval; Energy savings satisfies the High-Voltage Insulation condition simultaneously, can tolerate strict vibratory impulse requirement.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done explanation in further detail.
As shown in Figure 1, a kind of pair of operating point insulation relay comprises shell 1 and end cap 2, and they connect into an integral body through screw.Shell 1 afterbody is as the temperature end of probe, and there is screw thread 12 at the outer surface middle part, and sealing ring 4 is arranged at screw thread 12 tops, and inside is equipped with temperature-sensitive contact device 5.Temperature-sensitive contact device 5 is adhesively fixed on shell 1 inside through thermal conductive insulation glue 8.Device 5 tops, temperature-sensitive contact are welded with two leads 6, and lead 6 upwards links to each other with the binding post 7 of shell 1 top end cover 2 through screw.The fluid sealant 9 of on temperature-sensitive contact device 5, also having filled, secluding air.At end cap 2 outer surfaces, there are 10, one blocks 3 of a groove to link to each other with end cap 2 through this groove 10, the binding post 7 on the end cap 2 is housed in the block 3, and block 3 can be protected binding post 7.There is an oval outlet 11 3 sides of blocking a shot, are used to connect the turnover of electric wire.
Its shell 1 adopts the red copper material, is beneficial to heat conduction and processing, and the binding post 7 of end cap 2 also adopts the red copper material, and Nickel Plating Treatment has all been carried out on shell 1 inside and outside surface and binding post 7 surfaces, enhanced surface fineness, and improve antioxygenic property and corrosion resistance.End cap 2 adopts polysulfone material, and block 3 adopts elastomeric material, and vibration resistance, shock-resistant has higher compressive resistance and insulation resistance.It is 8 to 9 millimeters temperature-sensitive contact device 5 that the present invention has selected diameter for use, can save the space.The bottom surface of shell 1 inner temperature-sensitive contact device 5 is its temperature-sensitive faces.
In order between the water temperature that makes temperature-sensitive contact device 5 and need to detect as far as possible little thermal conduction resistance to be arranged; Shell 1 tail end face thickness has carried out strict control; Its wall thickness is less than 0.5mm, simultaneously, selected for use high heat conduction, high pressure resistant, the big thermal conductive insulation glue 8 of insulation resistance to fill the gap of temperature-sensitive contact devices 5 and tail end face inner surface; And fixing temperature-sensitive contact device 5; And do not adopt general mechanical crimping connected mode, and like this can emptying temperature-sensitive face and survey the air between the end face, make its temperature-sensitive face and survey tight connection of end face and reduce the heat conduction temperature difference; Reduce to be incubated the action of relay and the lag time between the actual water temperature, thus make its action error be controlled at ± 1.5 ℃.
Also filled this thermal conductive insulation glue 8 around the temperature-sensitive contact device 5 and in the gap between shell 1 inner surface.The volumetric expansion of the coefficient of cubical expansion of thermal conductive insulation glue 8 and shell 1 metal and temperature-sensitive contact device 5 metal end plane metals is close, makes variations in temperature be reduced to minimum to the influence of its sound construction property.Such frame mode can make the impact shock of 30 g of device tolerance of most fragile among the present invention.The use of thermal conductive insulation glue 8, the high-voltage resistance capability that makes temperature-sensitive contact device 5 are brought up to more than the 1500V about by 1000V, and insulation resistance is brought up to more than the 2000M Ω by 500 M Ω.
On temperature-sensitive contact device 5 and thermal conductive insulation glue 8, filled fluid sealant 9, temperature-sensitive contact device 5 is come with thermal conductive insulation glue 8 and air are isolated, thereby protection temperature-sensitive contact device 5 and thermal conductive insulation glue 8 are without prejudice, and it can be used under rugged environment.It is 5 ℃ that temperature-sensitive contact device 5 is connected temperature, and break-off signal is 10 ℃, and action frequency can be up to 100,000 times.
Tell about the course of work of the present invention below in detail:
The present invention is installed in the water tank sidewall, and insulation relay afterbody temperature-sensitive end is immersed in the water, and the terminals of end cap 2 are in the water tank outside.When water temperature changes, have a hysteresis between the temperature-sensitive contact device 5 of insulation relay and the water, this hysteresis is exactly the error that is incubated relay, and it is 1.5 ℃ that maximum temperature of the present invention lags behind.When water temperature decline reached 5 ℃, the temperature of temperature-sensitive contact device 5 did not also reach 5 ℃, a little more than 5 ℃; Treat that water temperature continues to descend, when being lower than 5 ℃ (minimum is 3.5 ℃), the temperature of temperature-sensitive contact device 5 reaches 5 ℃; This moment the closing of contact, the power connection of water tank electric heater, feed-tank heating; After this, water temperature raises gradually.When water temperature rise reached 10 ℃, the temperature of temperature-sensitive contact device 5 did not also reach 10 ℃, a little less than 10 ℃, treated that water temperature continues to raise; (be up to 11.5 ℃) when being higher than 10 ℃, the temperature of temperature-sensitive contact device 5 reaches 10 ℃, and this moment, the contact was broken off, and the power-off of water tank electric heater stops heating; After this, water temperature reduces with ambient temperature gradually, when being lower than 5 ℃ once more; Relay is connected, and circulation so repeatedly guarantees that water tank temperature maintains in the temperature range of certain 5～10 (± 1.5) ℃.
Though the present invention with preferred embodiment openly as above; But they are not to be used for limiting the present invention; Anyly be familiar with this art; In spirit that does not break away from the present invention and scope, certainly when can doing various variations or retouching, so being as the criterion of should being defined with the application's claim protection range of protection scope of the present invention.
Claims (7)
1. two operating points are incubated relay, and it is characterized in that: comprise shell (1) and end cap (2), shell (1) and end cap (2) connect into an integral body through screw; Shell (1) afterbody is as the temperature end of probe, and there is screw thread (12) at the outer surface middle part, and sealing ring (4) is arranged at screw thread (12) top, and inside is equipped with temperature-sensitive contact device (5); Temperature-sensitive contact device (5) is adhesively fixed on shell (1) inside through thermal conductive insulation glue (8); Around the gap of thermal conductive insulation glue (8) filling temperature-sensitive contact device (5) and tail end face inner surface and the temperature-sensitive contact device (5) and the gap between shell (1) inner surface, the volumetric expansion of the coefficient of cubical expansion of thermal conductive insulation glue (8) and shell (1) metal and temperature-sensitive contact device (5) metal end plane metal is close; Temperature-sensitive contact device (5) top is welded with two leads (6), and lead (6) upwards links to each other with the binding post (7) of shell (1) top end cover (2) through screw; The fluid sealant (9) of on temperature-sensitive contact device (5), also having filled; At end cap (2) outer surface, a groove (10) is arranged, a block (3) links to each other with end cap (2) through this groove (10), and the binding post (7) on the end cap (2) is housed in the block (3); There is an ellipse outlet (11) that is used to connect the electric wire turnover block (3) side.
2. a kind of pair of operating point insulation relay according to claim 1, it is characterized in that: described shell (1) and binding post (7) adopt the red copper material.
3. a kind of pair of operating point insulation relay according to claim 1, it is characterized in that: Nickel Plating Treatment has all been carried out on inside and outside surface of described shell (1) and binding post (7) surface.
4. a kind of pair of operating point insulation relay according to claim 1, it is characterized in that: described end cap (2) adopts polysulfone material.
5. a kind of pair of operating point insulation relay according to claim 1, it is characterized in that: described block (3) adopts elastomeric material.
6. a kind of pair of operating point insulation relay according to claim 1, it is characterized in that: described shell (1) tail end face wall thickness is less than 0.5mm.
7. a kind of pair of operating point insulation relay according to claim 1, it is characterized in that: described temperature-sensitive contact device (5) is 8 to 9 millimeters temperature-sensitive contact device for diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105383079A CN102005331B (en) | 2010-11-10 | 2010-11-10 | Thermal insulation relay with dual operating points |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105383079A CN102005331B (en) | 2010-11-10 | 2010-11-10 | Thermal insulation relay with dual operating points |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102005331A CN102005331A (en) | 2011-04-06 |
| CN102005331B true CN102005331B (en) | 2012-07-25 |
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ID=43812594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105383079A Active CN102005331B (en) | 2010-11-10 | 2010-11-10 | Thermal insulation relay with dual operating points |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102005331B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9524840B2 (en) * | 2015-01-21 | 2016-12-20 | Thomas & Betters International LLC | High-temperature, high-pressure vacuum relay |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB670624A (en) * | 1948-09-20 | 1952-04-23 | Merlin Mouldings Ltd | Improvements in or relating to thermostatic control devices |
| GB802558A (en) * | 1955-12-07 | 1958-10-08 | Vapour Heating Corp | Immersion type thermostat and relay assembly |
| CN2385428Y (en) * | 1999-07-15 | 2000-06-28 | 中山市升平热保护器实业公司 | Heat protector |
| CN2786770Y (en) * | 2005-03-31 | 2006-06-07 | 丁建树 | Vehicle-used temperature control switch |
-
2010
- 2010-11-10 CN CN2010105383079A patent/CN102005331B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB670624A (en) * | 1948-09-20 | 1952-04-23 | Merlin Mouldings Ltd | Improvements in or relating to thermostatic control devices |
| GB802558A (en) * | 1955-12-07 | 1958-10-08 | Vapour Heating Corp | Immersion type thermostat and relay assembly |
| CN2385428Y (en) * | 1999-07-15 | 2000-06-28 | 中山市升平热保护器实业公司 | Heat protector |
| CN2786770Y (en) * | 2005-03-31 | 2006-06-07 | 丁建树 | Vehicle-used temperature control switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102005331A (en) | 2011-04-06 |
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