CN208673990U - Digital sulfur hexafluoride gas density relay - Google Patents
Digital sulfur hexafluoride gas density relay Download PDFInfo
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- CN208673990U CN208673990U CN201821673927.1U CN201821673927U CN208673990U CN 208673990 U CN208673990 U CN 208673990U CN 201821673927 U CN201821673927 U CN 201821673927U CN 208673990 U CN208673990 U CN 208673990U
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Abstract
The utility model is about a kind of digital sulfur hexafluoride gas density relay, including shell mechanism and internal control mechanism, internal control mechanism is loaded on inside the shell mechanism, shell mechanism includes along the sequentially connected the cover of relay thickness direction, watchcase and shell adapter, internal control mechanism includes digital display component, relay mainboard, power supply mainboard and sensor, sensor is located in shell adapter, digital display component is located in the cover, and relay mainboard and power supply mainboard are located in watchcase；Along relay thickness direction, one end of watchcase has end face, and the other end is open end, the end face seal connection of shell adapter and watchcase；The open end of watchcase is tightly connected in an interference fit with the cover.The digital sulfur hexafluoride gas density relay of the utility model realizes the miniaturization of device, convenient for installing in a variety of working spaces.
Description
Technical field
The utility model designs gas density detection field more particularly to a kind of digital sulfur hexafluoride gas density relay
Device.
Background technique
Sulfur hexafluoride gas (SF6) it is a kind of colourless, tasteless, nontoxic and non-flammable gas, there is liquid in general
A possibility that change, is just able to maintain gaseous state at 45 degrees Celsius or more.Under uniform electric field, insulating properties is three times of air, four
Under a atmospheric pressure, the suitable transformer oil of insulating properties.Currently, using sulfur hexafluoride gas as arc-extinguishing medium and dielectric
Electric product has been widely used in power department and industrial and mining enterprises, promotes the fast development of power industry.In use,
If gas leakage occurs for sulfur hexafluoride electric product, it cannot guarantee the reliable and secure operation of sulfur hexafluoride electric product.Thus it is guaranteed that six
Gas leakage does not occur for sulfur fluoride electric product, to guarantee the safe and reliable operation of sulfur hexafluoride electric product, at
One of vital task of power department.
Currently, generalling use a kind of pointer sulfur hexafluoride gas density relay of machinery to detect sulfur hexafluoride gas
Density, i.e., when gas leakage occurs for sulfur hexafluoride electric product, which can issue alarm and lock
Signal is closed, sulfur hexafluoride gas density relay in the prior art, due to the display structure using pointer-type, testing result is needed
It is analyzed according to dial scale, it is more inconvenient, and in long-time service, pointer shows that structure is easy to wear, or deformation, so as to cause it
Showing data inaccuracy, precision is lower, and vulnerable to such as height above sea level, the extraneous factors such as vibration influence, and job stability is poor,
Shock resistance is poor.
Patent document CN206497002U discloses a kind of digital output electromechanical integration SF of high reliability6Gas density
Transmitter, including pressure interface, bourdon tube, kinematic link, the transmission gear assigned in kinematic link end, pointer, pressure sensing
Device, pressure sensor tetrafluoro shell, shell of transducer, connecting pipe, sampling gas chamber, pressure sensor seat, insulation board, digital signal
Interface；Alarm and block signal interface and electronic circuit board；Pressure interface is communicated with sampling gas chamber respectively with the port of connecting pipe；
One end of bourdon tube is communicated with sampling gas chamber fixation, and one end of the other end and kinematic link is fixedly connected；Kinematic link it is another
It is engaged through transmission gear with the end gear of pointer at end；Pressure sensor is placed on sensor holder；Outside pressure sensor tetrafluoro
Shell is placed in outside pressure sensor；Pressure sensor pinboard is placed in pressure sensor tetrafluoro cover top portion, and and pressure sensing
The signal input port of device and electronic circuit board connects；Insulation board is located at outside pressure sensor tetrafluoro outer casing bottom and transmitter
Between shell；Electronic circuit board is located at the top of insulation board, and is fixedly connected with shell of transducer；The signal of electronic circuit board passes
Defeated port connects with digital signal interface.The sulfur hexafluoride gas density transmitter both can be carried out pointer instruction, and output is alarmed,
Energy output digit signals, realize SF6The intelligence of gas density.Meet higher leakproofness simultaneously, solves anti-interference and steady
Qualitative problem.However, the multiple effect in order to realize leakproofness and instruction and output signal, corresponding SF6Gas density becomes
Send device structure also complex, volume is larger.
Utility model content
The utility model proposes a kind of digital sulfur hexafluoride gas density relays, to solve the above problems.
The utility model provides a kind of digital sulfur hexafluoride gas density relay, including shell mechanism and internal control
Mechanism, the internal control mechanism loaded on inside the shell mechanism, the shell mechanism include along relay thickness direction according to
The cover, watchcase and the shell adapter of secondary connection, the internal control mechanism include digital display component, relay mainboard, electricity
Source mainboard and sensor, wherein sensor is located in the shell adapter, and the number display component is located at the cover
Interior, the relay mainboard and the power supply mainboard are located in the watchcase；Along the relay thickness direction, the watchcase
One end has end face, and the other end is open end, and the shell adapter is connect with the end face seal of the watchcase, the biography
Sensor is electrically connected with the internal control mechanism；The open end of the watchcase and the cover are close in an interference fit
Envelope connection.
Optionally, the outer ring of the open end of the watchcase is equipped at least one protrusion, the cover and the watchcase
The outer ring of coupling part is equipped at least one empty slot for protrusion insertion.
Optionally, the internal control mechanism further includes lining ring, and the lining ring is hollow cylinder, the lining ring along it is described after
The digital display component is pressed together on the bottom surface of the cover and abutted with the bottom surface by one end of electric appliance thickness direction, another
End is abutted with the open end of the watchcase.
Optionally, gasket seal circle is equipped at the abutting of the lining ring and the watchcase, or, the lining ring and the cover
Abutting at and the abutting of the lining ring and the watchcase at be equipped with all gasket seal circles.
Optionally, the digital display component includes display panel, display mainboard and panel pad pasting, wherein the display surface
Plate is fixedly connected with the display mainboard by screw bolt and nut, and the panel pad pasting is attached on the display panel.
Optionally, have inside the shell adapter along the inner cavity that the relay thickness direction extends, the sensing
Device is located in the inner cavity and abuts with the end face of the watchcase, and the pin of the sensor passes through the end face；Institute
It states sensor and is equipped with the first sealing ring between the middle part of the relay thickness direction, with the shell adapter.
Optionally, the company in the sensor along the end of the relay thickness direction, with the shell adapter
It meets place and is equipped with the second sealing ring, be equipped with third sealing ring with the junction of the watchcase.
Optionally, the sensor is temperature and pressure integrated transducer.
Optionally, the internal control mechanism further includes press strip and pressing ring, the relay mainboard, the power supply mainboard,
The press strip and pressing ring edge pass sequentially through single head to the direction of the shell adapter from the cover and lead to stud and bolt
Connection, and it is fixed on the end face of the watchcase.
Optionally, the relay mainboard is equipped with the first threaded hole, and the power supply mainboard is equipped with the second threaded hole, the pressure
Item is equipped with third threaded hole and the first counterbore, and the pressing ring is equipped with the 4th threaded hole, wherein the screw rod that the first single head leads to stud is worn
It crosses second threaded hole and is screwed with the third threaded hole, the first bolt passes through first threaded hole and first list
The head of logical stud screws；The screw rod that second single head leads to stud screws in the 4th threaded hole, and the second bolt passes through described the
One counterbore is simultaneously screwed with the head of the logical stud of second single head.
It optionally, further include third bolt, the face that the shell adapter is bonded with the watchcase is equipped with blind hole, and described the
Three bolts pass through the end face of the pressing ring and the watchcase and screw in the blind hole.
Optionally, the junction of the shell adapter and the watchcase is equipped with the 4th sealing ring.
Optionally, the shell of the watchcase is equipped with the input multicore shielding power supply line for being connected to the internal control mechanism
With output multicore shielding power supply line.
The digital sulfur hexafluoride gas density relay of the utility model, it is as a result compact, securely and reliably, to the maximum extent
Inner space is utilized, realizes the miniaturization of digital sulfur hexafluoride gas density relay.
Detailed description of the invention
Specific embodiment of the present utility model is described in further detail below in conjunction with attached drawing.
Fig. 1 is the explosive view of the digital sulfur hexafluoride gas density relay of the utility model specific embodiment；
Fig. 2 is the A-A sectional view of Fig. 3；
Fig. 3 is the front view of the digital sulfur hexafluoride gas density relay of the utility model specific embodiment.
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this theory
The bright revealed content of book understands other advantages and effect of the utility model easily.Although the description of the utility model will tie
It closes preferred embodiment to introduce together, but this feature for not representing this utility model is only limitted to the embodiment.On the contrary, knot
Closing the purpose that embodiment makees utility model introduction is to be possible to extend to cover the claim based on the utility model
Other selections or transformation out.In order to provide to the understanding of the depth of the utility model, be described below in will be comprising many specific
Details.The utility model can also be implemented without using these details.In addition, in order to avoid the weight of chaotic or fuzzy the utility model
Point, some details will be omitted in the de-scription.
In addition, the nouns of locality such as "left", "right" used in the following description, should not be construed as to the utility model
Limitation.
Sulfur hexafluoride in the digital sulfur hexafluoride gas density relay of the utility model had both referred to pure sulfur hexafluoride gas
Body further includes the mixed gas containing sulfur hexafluoride.For being situated between in workshop using nitrogen and sulfur hexafluoride gas as insulation
The digital sulfur hexafluoride gas density relay of matter electrical equipment, the utility model is also applicable.
As shown in Figure 1 and Figure 2, the utility model provides a kind of digital sulfur hexafluoride gas density relay, including shell
Mechanism and internal control mechanism, internal control mechanism are installed on inside shell mechanism.Wherein, shell mechanism includes the cover 1, watchcase
2 and shell adapter 3, three is sequentially connected along relay thickness direction.Wherein the shape of the cover, watchcase and shell adapter can
To use the shape of usual sulfur hexafluoride gas density relay, such as the cover 1 and watchcase 2 are column structure, more specifically
Cylindrical body.Relay thickness direction is parallel with the axial direction of digital sulfur hexafluoride gas density relay with the present embodiment
Direction, as shown in figure 1 X-direction.Internal control mechanism includes digital display component 4, relay mainboard 5, power supply mainboard 6 and sensor
7.Sensor 7 is located in shell adapter 3, and digital display component 4 is located in the cover 1, relay mainboard 5 and power supply mainboard 6
In in watchcase 2.Along above-mentioned relay thickness direction X-direction, one end of watchcase 2 has end face 2a, and the other end is open end 2b.Shell
The end face 2a of body adapter 3 and watchcase 2 is tightly connected.So-called sealed connection is exactly shell adapter 3 with the junction of watchcase 2 not
Have air entrance.Sensor 7 is electrically connected with internal control mechanism, such as can be realized and be electrically connected by connecting line, Huo Zheke
Pin is arranged on sensor 7 as shown in fig. 1, it is electrically connected after pin to be passed through to the end face 2a of watchcase 2 with internal control mechanism
It connects, realizes the transmission of electric signal.The open end 2b of watchcase 2 is tightly connected with the cover 1 and installs in an interference fit, such as originally
The inner wall of the outer wall insertion the cover 1 of watchcase 2 in embodiment.
In actual installation the cover 1 and watchcase 2, first digital display component 4 can be installed in the cover 1, by relay master
Plate 5 and power supply mainboard 6 are installed in watchcase 2, are later again connected the cover 1 with both watchcase 2 progress interference, which can
To compress the thickness of digital sulfur hexafluoride gas density relay to the maximum extent.In addition, to realize to sulfur hexafluoride gas
The functions such as Density Detection warning function, number display, the internal control component in the utility model include digital display component 4,
Relay mainboard 5, power supply mainboard 6 and sensor 7, structure simplify.Digital sulfur hexafluoride gas density is realized on the whole
The miniaturization of relay, easy to carry, when use, can satisfy the working environment of a variety of factory floors, more narrow in spare space
Also the installation of relay is able to achieve on small device to be detected, it is applied widely.
Further, as depicted in figs. 1 and 2, the outer ring of the open end 2b of watchcase 2 is equipped at least one protrusion 21,
Such as one or three protrusions 21.Protrusion 21 is, for example, convex block, lug or bulge loop.The cover 1 and 2 coupling part of watchcase
Outer ring is equipped at least one empty slot 11 being embedded in for protrusion, such as one or three empty slots 11.By watchcase 2 and the cover 1
When interference fit, protrusion 21 and empty slot 11 on watchcase 2 cooperate, and further the cover 1 and watchcase 2 can be fixed.
Further, internal control mechanism further includes lining ring 12, is set to inside shell mechanism.Specifically, lining ring 12 is
Hollow cylinder, such as cylindrical body.Lining ring 12 presses digital display component 4 along one end of above-mentioned relay thickness direction X-direction
The cover 1 bottom surface and abutted with the bottom surface, the other end is abutted with the open end 2b of watchcase.Further, digital display component 4
It is attached on display panel 41 for example including display panel 41, display mainboard 42 and panel pad pasting 43, panel pad pasting 43, passes through spiral shell
Screw bolt and nut is fixedly connected with display panel 41 with display mainboard 42, such as using cross recess dormant bolt and hex nut to aobvious
Show that panel 41 and display mainboard 42 are fixed.Lining ring 12 abuts entire digital display component 4 and is pressed together on cover when installation
On lid 1.As shown in figure 3, using the present embodiment digital sulfur hexafluoride gas density relay when can pass through the cover observed number
Numerical value on word display component is shown, understands the density of part sulfur hexafluoride gas to be measured.The setting of lining ring 12 can be in hexafluoro
Change the transmitting for playing the role of power inside sulphur gas density relay, digital display component 4 can be fixed on to the bottom surface of the cover 1
On, also the power for the pushing and pressing that the cover 1 generates can be passed to watchcase 2.
As shown in Figure 1, being equipped with gasket seal circle 13 at the abutting of lining ring 12 and watchcase 2, i.e. 12 right end of lining ring is filled out with watchcase 2
Filled with gasket seal circle 13.Upper gasket seal circle 13 is covered in the right end of lining ring 12, it, will when by the cover 1 and mutual and tight watchcase 2
The lining ring 12 and watchcase 2 for being cased with sealing ring abut against, so that watchcase 2 and lining ring 12 are tightly connected, while the cover 1 is also due to and table
The interference fit of shell 2 and the gasket seal circle 13 of 1 right end of lining ring are fitted close, so as to complete between the cover 1 and watchcase 2
It is tightly connected.In other embodiments, in order to further increase air-tightness, at the left end of lining ring 12, with the abutting of the cover 1
Equipped with gasket seal circle, it is ensured that the bottom surface of the cover 1, i.e. in the present embodiment Fig. 1 the left side of the cover 1 relative to the cover 1 inside
Leakproofness.It from digital display component 4 to the space of 2 open end 2b of watchcase is other for installing in lining ring 12 in addition, such as Fig. 2
For the component, such as power module, filter circuit, common mode inductance etc. for realizing relay function needs, for convenience of observing, this reality
Above-mentioned component omission in an attached drawing is applied, which is not described herein again.
As depicted in figs. 1 and 2, about Sensor section, sensor 7 is located in shell adapter 3 in the various embodiments described above.
Have inside shell adapter 3 along the inner cavity that above-mentioned relay thickness direction X-direction extends, sensor 7 is located in the inner cavity simultaneously
It is abutted with the end face of watchcase, the pin of sensor 7 passes through end face 2a.At the middle part of sensor 7 in X direction, transfer with shell
First 3 are equipped with the first sealing ring 31, to guarantee air-tightness.In addition, can also connection at the end of sensor 7, with shell adapter 3
Locate, is i.e. second sealing ring 32 is set between the right end and shell adapter 3 of sensor 7 in the present embodiment Fig. 1.The present embodiment sensing
Device 7 is bonded with end face 2a, third sealing ring 33 can be arranged that is, on binding face in the junction of sensor 7 and watchcase 2.More into
One step, in the above embodiments, the 4th sealing ring 34 is set again in the junction of shell adapter 3 and watchcase 2.Such layer
Layer sealing, ensure that the high-air-tightness of digital sulfur hexafluoride gas density relay entirety.Further, the first sealing ring 31
It is filled in the recess at 7 middle part of sensor, enclosing recess containing one in shell adapter 3 can be used for filling the 4th sealing ring 34,
It both can guarantee air-tightness in this way, sealing ring will not occupy excessive space.Further, sensor 7 is temperature and pressure integration biography
Sensor has the function of pressure-sensing and temperature-compensating.
In the above embodiments, internal control mechanism further includes press strip 8 and pressing ring 9, relay mainboard 5, power supply mainboard
6, press strip 8 and pressing ring 9 lead to stud and are bolted along passing sequentially through single head to the direction of shell adapter 3 from the cover 1, and fixed
In the end face 2a of watchcase 2.It is wherein equivalent to from the cover 1 to the direction of shell adapter 3 parallel with relay thickness direction X-direction
And from open end 2b to the direction of end face 2a.Single head, which leads to stud, for example can be the conventional structures such as the logical copper post of single head, including screw rod
And head, screw rod may pass through threaded hole, bolt can be combined on head.Relay mainboard 5 and power supply mainboard 6 can be according to actual needs
Threaded hole is set, and leads to stud using single head and bolt is attached, and is fixedly connected on watchcase 2 by press strip 8 and pressing ring 9
On.
For example, the first threaded hole 51 can be arranged on relay mainboard 5, the second threaded hole 61 is set on power supply mainboard 6, is pressed
Item 8 is equipped with third threaded hole 81 and the first counterbore 82, and pressing ring 9 is equipped with the 4th threaded hole 91, above-mentioned first threaded hole 51, the
Two threaded holes 61, third threaded hole 81, the first counterbore 82 and the 4th threaded hole 91 quantity be, for example, two.First single head is logical
The screw rod of stud 62 is passed through and the second threaded hole 61 and is screwed with third threaded hole 81, the first bolt 52 pass through the first threaded hole 51 with
The head that first single head leads to stud 62 screws；The screw rod that second single head leads to stud 92 screws in the 4th threaded hole 91, the second bolt 83
It is screwed across the first counterbore 82 and with the head of the logical stud 92 of the second single head.Second bolt 83 is, for example, cross recess dormant bolt.
Further, it is additionally provided with third bolt 93, the face that shell adapter 3 is bonded with watchcase 2 is equipped with blind hole 35, third spiral shell
Bolt 93 passes through the end face 2a of pressing ring 9 and watchcase 2 and screws in blind hole 35.93 quantity of third bolt is, for example, four, correspondingly blind hole
35 be four.Pressing ring 9 can be not only fixed on the end face 2a of watchcase 2 by the connection of third bolt 93, but also can be by shell
Adapter is fixed on the end face 2a of watchcase 2.It can be equipped with and the matched threaded hole of third bolt 93 or counterbore on pressing ring 9.
The first counterbore 82 being arranged on press strip 8 and the second bolt 83 cooperate, and the second bolt 83 can be embedded in the first counterbore 82, reduce press strip
The distance between 8 and power supply mainboard 6 are conducive to the thickness for reducing relay.
Further, the second single head leads to after stud 92 screws in the 4th threaded hole 91 and can both contradict with end face 2a, can also be with
Not contact face 2a, or it is designed to insertion end face 2a and the form that is not passed through, as long as not influencing shell adapter 3 and watchcase 2
Connection.
In the above embodiments, digital display component 4 is set in the cover 1 without being set in watchcase 2, is being carried out in this way
When watchcase 2 and the cover 1 assemble, only need to suitably rotate the cover 1 can correct the position of digital display component 4, guarantee number display
Component 4 is located at position of facing as shown in Figure 3, easy to adjust.
In the above embodiments, the shell of watchcase 2 is equipped with the input multicore shielding power supply of connection internal control mechanism
Line 22 and output multicore shielding power supply line 23, can prevent interference signal from entering, the two is in shell two sides, mutually not using shielded cable
Interference.In addition, being additionally provided with sealing gland screw 24 on watchcase 2.Direct current 24V power supply can be used in power supply mainboard 6, can using two stage filter
It effectively prevent outer signals to interfere, increases product reliability.Relay mainboard 5 uses magnetic latching relay, not by power-down conditions
It influences, corresponding contact state can be kept, increase contact reliability.Numeral method, service life are used in digital display component 4
It is long, it is not easily susceptible to external interference.Using low-power consumption Acquisition Circuit, the Overall Power Consumption of product can be reduced.The number of the various embodiments described above
Word formula sulfur hexafluoride gas density relay can also have 485 transporting functions, realize online teletransmission detection function.
It is multiple-sealed to being used between sensor, shell adapter and watchcase in above-described embodiment, it both ensure that relay
The miniaturization of volume enhances air-tightness again, prevents gas leak.It is mutually and tight between the cover and watchcase and close using sealing ring
Envelope, can effectively protect internal mainboard, corrodes from external environment, is not influenced by height above sea level, and shock resistance is good, the operation is stable, peace
It is complete reliable.
The material of the shell mechanism of the utility model, i.e. the cover, watchcase and shell adapter is metal material, such as
Using 316L, most electromagnetic pollutions can be shielded, wire communication product greatly improved in strongly disturbing substation
Safety, real-time and the reliability of middle data transmission.
The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications or change completed under mind and technical idea, should be covered by the claim of the utility model.
Claims (13)
1. a kind of digital sulfur hexafluoride gas density relay, which is characterized in that including shell mechanism and internal control mechanism,
Loaded on inside the shell mechanism, the shell mechanism includes being sequentially connected along relay thickness direction for the internal control mechanism
The cover, watchcase and shell adapter, the internal control mechanism includes digital display component, relay mainboard, power supply mainboard
And sensor, wherein
The sensor is located in the shell adapter, and the number display component is located in the cover, the relay
Mainboard and the power supply mainboard are located in the watchcase；
Along the relay thickness direction, one end of the watchcase has end face, and the other end is open end, the shell adapter
It is connect with the end face seal of the watchcase, the sensor is electrically connected with the internal control mechanism；The institute of the watchcase
It states open end and the cover and is tightly connected in an interference fit.
2. digital sulfur hexafluoride gas density relay as described in claim 1, which is characterized in that the opening of the watchcase
The outer ring at end is equipped at least one protrusion, and the cover and the outer ring of the watchcase coupling part are equipped with for the protrusion
At least one empty slot of portion's insertion.
3. digital sulfur hexafluoride gas density relay as described in claim 1, which is characterized in that the internal control machine
Structure further includes lining ring, and the lining ring is hollow cylinder, and the lining ring is along one end of the relay thickness direction by the number
Display component is pressed together on the bottom surface of the cover and abuts with the bottom surface, and the other end is abutted with the open end of the watchcase.
4. digital sulfur hexafluoride gas density relay as claimed in claim 3, which is characterized in that the lining ring with it is described
Gasket seal circle is equipped at the abutting of watchcase, or, at the abutting of the lining ring and the cover and the lining ring and the table
All gasket seal circles are equipped at the abutting of shell.
5. digital sulfur hexafluoride gas density relay as claimed in claim 3, which is characterized in that the number display group
Part includes display panel, display mainboard and panel pad pasting, wherein the display panel and the display mainboard pass through bolt and spiral shell
Mother is fixedly connected, and the panel pad pasting is attached on the display panel.
6. digital sulfur hexafluoride gas density relay as described in claim 1, which is characterized in that the shell adapter
Inside have along the inner cavity that the relay thickness direction extends, the sensor be located in the inner cavity and with the watchcase
The end face abuts, and the pin of the sensor passes through the end face；In the sensor along the relay thickness direction
The first sealing ring is equipped between middle part, with the shell adapter.
7. digital sulfur hexafluoride gas density relay as claimed in claim 6, which is characterized in that on the sensor edge
At the end of the relay thickness direction, it is equipped with the second sealing ring with the junction of the shell adapter, with the watchcase
Junction be equipped with third sealing ring.
8. digital sulfur hexafluoride gas density relay as described in claim 1, which is characterized in that the sensor is temperature
Press integrated transducer.
9. digital sulfur hexafluoride gas density relay as described in claim 1, which is characterized in that the internal control machine
Structure further includes press strip and pressing ring, and the relay mainboard, the power supply mainboard, the press strip and the pressing ring are along from the cover
Single head is passed sequentially through to the direction of the shell adapter to lead to stud and be bolted, and is fixed on the end face of the watchcase.
10. digital sulfur hexafluoride gas density relay as claimed in claim 9, which is characterized in that the relay master
Plate is equipped with the first threaded hole, and the power supply mainboard is equipped with the second threaded hole, and the press strip is equipped with third threaded hole and the first counterbore,
The pressing ring is equipped with the 4th threaded hole, wherein
The screw rod that first single head leads to stud passes through second threaded hole and screws with the third threaded hole, and the first bolt passes through
The head that first threaded hole leads to stud with first single head screws；The screw rod that second single head leads to stud screws in the described 4th
Threaded hole, the second bolt passes through first counterbore and the head for leading to stud with second single head screws.
11. digital sulfur hexafluoride gas density relay as claimed in claim 9, which is characterized in that further include third spiral shell
Bolt, the face that the shell adapter is bonded with the watchcase are equipped with blind hole, and the third bolt passes through the pressing ring and the table
The end face of shell simultaneously screws in the blind hole.
12. such as the described in any item digital sulfur hexafluoride gas density relays of claim 1-11, which is characterized in that described
The junction of shell adapter and the watchcase is equipped with the 4th sealing ring.
13. such as the described in any item digital sulfur hexafluoride gas density relays of claim 1-11, which is characterized in that described
The shell of watchcase is equipped with the input multicore shielding power supply line for being connected to the internal control mechanism and output multicore shielding electricity
Source line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821673927.1U CN208673990U (en) | 2018-10-16 | 2018-10-16 | Digital sulfur hexafluoride gas density relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821673927.1U CN208673990U (en) | 2018-10-16 | 2018-10-16 | Digital sulfur hexafluoride gas density relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208673990U true CN208673990U (en) | 2019-03-29 |
Family
ID=65821301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821673927.1U Active CN208673990U (en) | 2018-10-16 | 2018-10-16 | Digital sulfur hexafluoride gas density relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208673990U (en) |
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2018
- 2018-10-16 CN CN201821673927.1U patent/CN208673990U/en active Active
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